Skip to main content
Login | Suomeksi | På svenska | In English

Browsing by master's degree program "Proviisorin koulutusohjelma"

Sort by: Order: Results:

  • Porru, Anna (2020)
    Medication-related errors have been identified as the single most important risk factor for patient safety across the world. According to previous research, medication errors are common in nursing homes. However, the existing data on medication errors in Finnish nursing homes is scarce, although the challenges and defects in nursing home care services, including drug treatments, are well known. Furthermore, nursing home residents are typically characterized by old age, multimorbidity and polypharmacy. Therefore, they are particularly vulnerable to potential adverse events caused by medication errors. The aim of this study was to investigate the rates and causes of medication errors reported in nursing homes and evaluate their impact on medication safety. Additionally, the proportions of potentially inappropriate medication (PIMs) and high-risk medication involved in the medication errors were determined. The data of the study consisted of 251 medication errors reports that were submitted to the safety incident report system (HaiPro) in nursing homes located in Central Uusimaa healthcare and social welfare joint municipal authority (Keusote) in 2019. Quantitative analysis of the data provided an overview of the medication errors that had occurred in nursing homes and the medicines most commonly involved in them. Content analysis and simplified root cause analysis enabled to study more in-depth the contributing factors of medication errors and potential risks associated with the medication process in nursing homes, as well as the possibilities of preventing similar errors in the future. James Reason's human error theory and in particular its system perspective was applied as a theoretical framework in this study. Medication errors were reported regularly in nursing homes during the follow-up period of the study. The most frequent medication error type was administration error. The majority of these errors were medication omissions, followed by the wrong time of administration and administration to the wrong patient. The most common drug classes causing medication errors were antithrombotics, opioids, antidementia drugs, diuretics, antipsychotics, antidiabetics, and antidepressants. Nearly a quarter of the reported medicines were high-risk medications, most commonly opioids, antithrombotics, or antidiabetic drugs. PIMs accounted for approximately 13% of all medications in the data. Errors were most often caused by unsafe medication practices, communication problems, and deficiencies in the work environment such as excessive workload or time pressure. A significant part of the medication errors were related to transdermal medication patches. The study also showed that the quality of medication error reporting in nursing homes is in part insufficient and should be improved so that the reports can be better used for learning purposes. The results of the study provide valuable additional information on medication errors in Finnish nursing homes and their contributing factors. The information can be used to improve medication safety practices in nursing homes. Safe and uninterrupted medication use process is a goal that should be pursued not only in health care but also in social welfare services such as nursing homes.
  • Micklin, Maria (2022)
    Indomethacin is in a BCS-classification class two drug, meaning it has poor solubility but good permeability. Because of this solubility is a limiting factor for it reaching bloodcirculation. Amorphous form has better solubility than crystalline form. Most common problems with amorphous form are poor stability and process technical problems. In this study Indomethacin was combined with two different kind of polymers that were prepared by hot-melt extrusion. By hot-melt extrusion we can get more stable product than pure amorphous drug. These polymers were polyvinylpyrrolidone (PVPK179 and polyvinylpyrrolidonevinylacetate (PVPVA). They were prepared with Indomethacin 1:1 mass ratio. The aim was to study these extrudates and their stability, cumulative release and especially permeability. By using differential scanning calorimetry, X-ray diffraction and polarized light microscopy it was possible to analyze whether the drug was amorphous or crystalline. In the study it was found that by using hot-melt extrusion it was possible to make amorphous combinations of Indomethacin and polymers. Their permeability was between crystalline and amorphous form. PVPK17-Indomethacin combination had better permeability than PVPVA-Indomethacin combination. On the other hand PVPVA-Indomethacin had better cumulative release than PVPK17-Indomethacin combination
  • Heinonen, Suvi (2020)
    Diacylglycerol (DAG) is a lipid second messenger, which activates classical and novel protein kinase C (PKC) isozymes at the plasma membrane. Abnormalities in PKC signaling have been linked to several diseases, and defective PKC function connects to multiple pathophysiological components of Alzheimer’s disease. However, aimlessly activating all PKC isozymes with synthetic ligands can be problematic, since the activation of certain isozymes can also promote unwanted processes. There are indications that DAGs with varying degrees of acyl chain saturation may have different and specific PKC activating abilities. Thus, understanding how the structural differences in DAGs relate to their behavior at the lipid bilayer may be beneficial for the development of new, isozyme-specific ligands of PKC. The aim of this master’s thesis was to compare the orientation, positioning and dynamics of two unsaturated DAG molecular species, 1,2-dioleoyl-sn-glycerol (DOG) and 1-stearoyl-2-docosahexaenoyl-sn-glycerol (SDG) in glycerophospholipid bilayers using conventional molecular dynamics (MD) simulations and umbrella sampling. The glycerophospholipid bilayers were composed of either 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylethanolamine (POPE) or 1-stearoyl-2-docosahexaenoyl-sn-glycero-3-phosphatidylethanolamine (SDPE), representing the glycerophospholipid environment in the inner leaflet of the plasma membranes in peripheral tissues and in brain tissue, respectively. Both DAG molecular species displayed very dynamic behavior in all systems, with wide distributions of glycerol moiety tilt angles and acyl chain conformations. Multiple occurrences of transbilayer movement (flip-flop) of DAGs was observed during the MD simulations in all systems. In POPE bilayers, SDG was observed to position closer to the aqueous interface compared to DOG, with larger values of solvent accessible surface area (SASA) of the glycerol moiety and the sn-3 hydroxyl group. In SDPE bilayers, no significant difference in this regard was observed between the DAG molecular species. Although potential of mean force (PMF) profiles did not reveal any major differences in the energetically favoured position of the hydroxyl group between the DAG molecular species, the calculations exposed that the dynamics of DOG are affected more by the surrounding lipid environment compared to SDG. Based on these results, it is probable that while the solvent accessibility and overall position of DAGs is affected by the length and degree of saturation of their acyl chains, there are also other mechanisms and processes causing the differing levels of PKC activation yielded by different DAG molecular species.
  • Järvinen, Janina (2021)
    Current treatments for major depressive disorder have notable limitations including the delay achieving the therapeutic effect. Ketamine has been shown to alleviate the symptoms of depression rapidly and promising findings have also been found when using nitrous oxide. However, the mechanisms behind rapid antidepressant effect are not fully discovered. It seems that rapid-acting treatments alter brain energy metabolism, enhance synaptic plasticity, and repair neuronal dysfunction connected to depression. Particularly, the activation of brain derived neurotrophic factor (BDNF) mediated tropomyosin receptor kinase B (TrkB) signaling has been connected to rapid antidepressant effect. Fasting is also known to induce BDNF production and it is thought to activate BDNF-TrkB signaling. In addition, both of these treatments alter the brain energy metabolism. The objective of this study was to find out how fasting and nitrous oxide alone and in combination affect the rapid antidepressant effect and synaptic plasticity related BDNF-TrkB signaling in mice. Another aim of the research was to determine whether the body temperature changes after these treatments as a marker of metabolic rate. The analyzed brain samples of the mice were collected 15 minutes after cessation of nitrous oxide administration. As a result, it was found that the fasting protocol used in this study did not activate the studied BDNF-TrkB signaling. However, after nitrous oxide administration, the studied signaling and markers related to synaptic plasticity were partly activated. The results from the combination of nitrous oxide and fasting were similar compared to nitrous oxide administration only. It is therefore conceivable, that the effects were caused exclusively by nitrous oxide. Furthermore, a fascinating finding related to energy metabolism was that nitrous oxide reduced the body temperature of the mice significantly 15 minutes after cessation of the gas administration. Overall, these results are promising and consistent with previous research indicating that nitrous oxide administration could be related to induced synaptic plasticity and therefore have antidepressant associated effects. Nitrous oxide could be used to understand the mechanisms behind rapid antidepressant effect and it could be a potential option to treat depression in the future. Based on these results, it seems that energy metabolism could be related to rapid antidepressant effect. It also supports the observations that all different rapid-acting treatments alter the brain energy metabolism.
  • Vartiainen, Mira (2024)
    Current therapies for depression have limitations in efficacy and delayed onset of action. Rapid-acting antidepressants like ketamine, an N-methyl-D-aspartate receptor (NMDA-R) antagonist, have gathered attention as an improved treatment option. However, the neurobiological mechanism underlying their antidepressant effect remains uncertain. Integral mechanisms of action seem to be alterations in synaptic plasticity, global cortical excitation, and repair of neuronal dysfunctions prevalent in the pathophysiology of depression. Emerging evidence does suggest that antidepressant drugs act by facilitating brain derived neurotrophic factor (BDNF) mediated tropomyosin receptor kinase B (TrkB) signaling. Interestingly, rapid-acting antidepressants seem to increase TrkB-associated signaling after their acute pharmacological effect has dissipated, and when animals become sedated and show various physiological changes associated with deep sleep (e.g., slow wave EEG activity, SWA). Indeed, recently a close relationship between sedation and molecular signaling implicated in antidepressant effects has been discovered. The aim of this study was to explore the relationship between sedation and molecular signaling associated with antidepressant effect. This was carried out by assessing the localization of TrkB-associated phosphorylation signaling in the adult male mice medial prefrontal cortex (mPFC) using dexmedetomidine, a sedative. Key signaling molecules such as ribosomal protein S6 kinase (p70S6K), ribosomal protein S6 (rpS6), glycogen synthase kinase 3 (GSK3), mitogen activated protein kinases (MAPKs) and immediate early gene c-Fos, were examined through immunohistochemical (IHC) analysis. Two separate experiments were conducted using naïve adult 8-13-week-old (n=8 and n=10) male C57BL/6JRccHs mice. In the experiments mice were injected intraperitoneally with either dexmedetomidine (0,05 mg/kg, Dexdomitor®), or saline followed by a 30-minute recovery period whereafter mice were euthanized. In the first experiment, medial prefrontal cortex samples were collected immediately post decapitation for western blot (WB) analysis. The results showed that dexmedetomidine significantly activated TrkB-associated signaling in brain homogenates, consistent with expectations. In the second experiment, mice were perfused with 4% paraformaldehyde (PFA) before brain collection for IHC analysis. However in this experimental setting, no significant difference in the localization of TrkB-associated signaling induced by dexmedetomidine was observed compared to saline. Although, no significant results for signal localization were observed, the results provide insights into the neurobiological effect of sedation induced TrkB-signaling. Further research factoring in limitations is needed to uncover the involvement of physiological states in antidepressant mechanisms.
  • Kivioja, Saara (2023)
    P-glycoprotein (ABCB1, MDR1) is an efflux transporter expressed widely through the body, but mainly focused on tissues that have protective or excretive function, such as liver and blood-brain-barrier. Many clinically used drugs from variety of therapeutic groups are substrates of P-glycoprotein, and changes in the function of P-glycoprotein may have impact on the drugs pharmacokinetics and -dynamics. The impact of genetic polymorphism on P-glycoprotein activity have been investigated for several years, but due to contradictory results no consensus has been made. The aim of this Master’s thesis was to investigate the effect of five different P-glycoprotein single nucleotide polymorphisms (SNPs) on transport activity. The study was performed by Spodoptera frugiperda (Sf9) membrane vesicles expressing P-glycoprotein variants. Baculovirus-derived expression system was used to introduce the ABCB1 gene to the cells. Vesicle assay was performed with N-methylquinidine (NMQ), and ATP-dependent transport of P-glycoprotein variants was compared to the reference gene. Amino acid change Cys717Tyr led to no transport activity compared to reference gene, and Arg669Cys associated with higher transport activity of NMQ. Arg588Cys, Ser795Cys and Ile836Val indicated no effect on the transport activity. Other aim for this Master’s thesis was to create a new in-house protocol to study P-glycoprotein polymorphism in vitro. Substrate accumulation assay for Rhodamine-123 in Sf9 cells analysed with flow cytometry was established, as flow cytometry is widely used method in other laboratories to study P-glycoprotein polymorphism. The baseline for flow cytometry assay was created successfully by optimizing substrate concentration and incubation time. According to the results, SNPs can impair P-glycoprotein function. New method to study P-glycoprotein function was created, and this method can be used to further study the effects of genetic polymorphism of P-glycoprotein and to compare the result between studies. The results gained from these in vitro studies can be utilized to understand in vivo pharmacogenetic findings.
  • Tikkanen, Alli (2019)
    Organic Anion Transporting Polypeptide 2B1 (OATP2B1) is an influx transporter expressed widely throughout the body in tissues such as intestine, liver, brain, placenta and skeletal muscle. Since many clinically used drugs are transported by OATP2B1, changes in the function of the transporter due to genetic polymorphism could lead to altered pharmacokinetics or -dynamics of OATP2B1 substrate drugs. The aim of this Master’s thesis was to create and optimize a cellular uptake assay to study the function of OATP2B1. Furthermore, the aim was to study the effects of six naturally occurring nonsynonymous single nucleotide variants on OATP2B1 transport function in vitro. With site-directed mutagenesis, single nucleotide changes were introduced into the gene coding for OATP2B1. OATP2B1 variants were expressed in human derived HEK293 cell line using baculovirus expression system. A cellular uptake assay with estrone-3-sulfate and a fluorescent probe 4’, 5’-dibromofluorescein (DBF) as substrates was set up and optimized. With the assay, OATP2B1-mediated uptake of variants was compared to the transport activity of OATP2B1 wild type. Amino acid changes Ser486Phe and Cys520Ser impaired OATP2B1 transport function severely. In addition, variant Thr318Ile transported DBF and estrone-3-sulfate less efficiently compared to OATP2B1 wild type, but Arg312Gln, Thr392Ile and Ser532Arg transport function was not affected. A method to study OATP2B1 function was created successfully. According to the results, single amino acid changes in OATP2B1 can impair OATP2B1 function. The results and method can be utilized to understand findings from pharmacogenetic studies in vivo, and to predict consequences of especially rare variants, which can be difficult to detect in small sample populations in clinical studies. However, further studies on the expression level and cellular localization of OATP2B1 variants are needed to fully characterize the impact of the variants studied.
  • Rossi, Vilma (2020)
    Background: Inhaled therapy is the most widely used treatment for asthma and chronic obstructive pulmonary disease (COPD). Inhaled medicinal product has several advantages, including high local drug concentration in the lungs and reduced systemic adverse effects. However, the challenge with inhaled therapy is that many asthma and COPD patients do not know how to use their inhaler properly. Suboptimal inhaler use can lead to poor clinical control. The Association of Finnish Pharmacies has developed inhalation technique assessment service (ITAS) to detect and correct patients’ inhalation technique and to give information regarding the inhaler and inhaled therapy, such as drug storage and oral care. Objective: The aim of the study is to investigate whether asthma and COPD patients’ ability to prepare the Respimat inhaler and the patients’ ability to properly inhale the drug improve after receiving ITAS. The second objective is to find out what patients and pharmacists think about the service and which customer groups benefit the most from the service. Methods: The study design is an uncontrolled pre-post intervention. 33 pharmacies participated in the study. All patients who were buying a prescribed Respimat inhaler, were offered to participate in the study. Patients’ inhalation technique was assessed before (baseline) and immediately after ITAS (follow up 1). In addition, the inhalation technique was assessed the next time the patient came to pharmacy to buy Respimat inhaler (follow-up 2). Questionnaires were used to assess patients’ and pharmacists’ perceptions of ITAS. Results: 228 baseline and follow-up ITAS were performed. The results of follow-up 2 will be published later in a separate article. 14 % of the patients performed all the steps (both inhaler preparation before first inhalation and inhalation process itself) correctly at baseline. After ITAS the number increased to 77 %. At baseline 30 % of the patients had an optimal inhalation technique (all inhalation steps correct) and after ITAS the number increased to 85 %. 70 % of the patients had an acceptable technique (all critical steps correct) before and 93 % after ITAS. Both patients and pharmacists felt that the service was beneficial to the patients when thinking the proper inhaler preparation and proper inhalation technique. Overall patients’ and pharmacists’ satisfaction were high towards ITAS. Our study indicates that patients benefit from ITAS regardless of patient’s age or how long the patient have been using the Respimat inhaler. Conclusions: A pharmacist-led inhalation technique assessment service significantly improves asthma and COPD patients’ inhalation technique with Respimat inhaler. ITAS should be performed regularly as part of the delivery of the inhaled drug to the patient. Further research is needed on the effectiveness of ITAS with other inhalers.
  • Lindstedt, Hanna (2022)
    Drug-induced liver injury (DILI) is a relatively rare hepatic condition that can be classified as predictable and unpredictable. However, DILI is a primary reason for drug withdrawals, post-marketing warnings, and restrictions of use. DILI is a problem for the drug users but also for the pharmaceutical industry and regulatory bodies. From the perspective of patients' and clinicians', DILI is the major cause of acute liver injury. At present, a major problem predicting DILI in drug discovery is a poor understanding of its mechanisms as well as the complexity of DILI pathogenicity. The main mechanism behind DILI are alterations in bile acid homeostasis, oxidative stress, and mitochondrial dysfunction. More than 50 % of drugs causing DILI are causing mitochondrial impairment. If the normal function of mitochondria is disturbed, the energy production of the cell decreases, and cell function decline leading eventually to the cell death. In this study prediction of mitochondrial toxicity was studied using cryopreserved primary hepatocytes of humans and rats. The aim of the study was to clarify if there are interspecies differences in the prediction of toxicity but also investigate possible differences in the mechanisms behind hepatotoxicity by using three well-known compounds toxic to mitochondria. To determine these differences, total cellular ATP was measured after 2- and 24- hour exposure time to gain information on overall viability and possible adaptive responses. Mitochondrial energy pathways were studied as a real-time monitoring acute exposure of test compounds. Morphology, location, and possible adaptive response of mitochondria were studied using a fluorescent probe and antibody staining combined with high content imaging (HCI). Overall, primary rat hepatocytes were more sensitive to the test compounds than human hepatocytes. Also, there were differences between human hepatocyte batches that may reflect the metabolic differences between hepatocyte donors. Immunolabeling did not bring any additional values compared to the fluorescent probe staining in the study of morphology of mitochondria. Additionally, it was noticed that treatment with paraformaldehyde significantly changed the hepatocyte mitochondria morphology. Overall, more effort is needed to develop image analysis of mitochondria morphology. Finally, studying mitochondrial morphology has proven to be difficult, and this study did not unfortunately reveal any information about the adaptive responses of mitochondria for drug-induced liver injury.
  • Böhling, Linda (2021)
    Tablet is the most common pharmaceutical dosage form due to ease of administration, chemical and physical stability, and relatively low manufacturing cost. Direct compression is the preferred method for tablet production. Direct compression formulations typically contain a considerable amount of excipients. Therefore, excipients can have a significant effect on the tableting properties of formulations. More research is needed for better comprehension of the compression behaviour of different materials. The objective of this work was to investigate tableting properties of different excipients and their binary mixtures with two different laboratory scale tableting devices; the Gamlen® D1000 Powder Compaction Analyzer and the FlexiTab®. The excipients used were microcrystalline cellulose (MCC), lactose, mannitol, starch, and dicalcium phosphate (DCP). Different compression pressures were used to survey the compression behaviour of the excipients at a wide pressure range. In addition, potential effects of compression speed, dwell time, and lubrication method were considered. The excipients and their binary mixtures were characterised based on compressibility (solid fraction vs. compression pressure) and tabletability (tensile strength vs. compression pressure). The results obtained with the devices were compared to enhance process understanding. Based on the compressibility curves, it appeared that plastic deformation was the main compression mechanism of MCC and starch and fragmentation the main compression mechanism of lactose, mannitol, and DCP. The tabletability of MCC was excellent, and also the tabletability of mannitol was good. The tabletability of DCP was intermediate, whereas lactose and starch had inferior tabletabilities. In general, the tabletabilities and compressibilities of the binary mixtures were more or less what was expected based on the results of the individual materials. The results obtained with the different speed parameters and lubrication methods were mainly in line with the perceptions of the compression mechanisms of different materials. In overall, the results obtained in the Gamlen and FlexiTab experiments were quite similar. However, tensile strengths appeared generally slightly lower in the FlexiTab experiments. Probable explanations are the higher compression speed of the FlexiTab and differences in hardness measurements. This study indicated that the FlexiTab and Gamlen devices have different benefits. The Gamlen device is clearly very suitable for investigating tableting properties during formulation development, but the FlexiTab device has the advantages of higher compression speed and automatic powder feeding mechanism. Tabletability results were slightly better with the Gamlen, but more experiments are needed for solving the reasons (e.g. compression speed and hardness measurements). More information of the compression behaviour of different materials could be obtained by analyzing punch displacement data and by using different compression equations.
  • Vieraankivi, Marika (2021)
    The ABCG2-protein is an ATP-dependent half transporter. It is found on apical membranes in intestine, liver, kidney, blood-brain barrier and placenta where it regulates absorption, distribution and elimination of many drugs, but also natural compounds and endogenous metabolites. Natural variation found on the ABCG2-gene can alter protein expression and transport activity. The altered function has been linked to pharmacokinetic changes and developing of diseases like gout. Studying natural ABCG2-variants and their effect gathers knowledge not only on their effect on pharmacokinetics but also on the ABCG2- transporters’ mechanism of function. The aim of this study was to combine an activating (I456V or H457R) and an inactivating (Q141K, F431L or T542A) non-synonymous single nucleotide variant in the same gene to study their combined effect on the ABCG2-transporter expression and active transport. Mutations were incorporated into the ABCG2- gene by site directed mutagenesis and the protein was expressed on HEK293-cells. The transport activity for Lucifer-Yellow and estrone sulfate was measured using HEK293-ABCG2-vesicles produced from cell membranes. The protein expression was measured with Western blot and mass spectrometry proteomics. Based on this study, different mutations together can alter each other’s effects, but the combined result is not always equal to the sum of variations. T542A-mutation did not show significant increase on the protein expression on any of the T542A-combinations, even though it has had such an effect in earlier studies. I456V, earlier expressed like wild type ABCG2, seemed to increase protein expression in all combinations. Q141K, F431L and T542A -mutations had lowering not expression dependent effect on the transport activity. F431L-mutation being so dominant that either of the two activating mutations could not restore the active transport in combinations. As seen before, H457R-variant seemed to cause a significant substrate specific activating effect on transport activity also in this study when combined with other mutations. However, H457R had a strong lowering effect on the protein expression and two of the combinations did not produce enough protein for active transport. As seen in this study, the ABCG2-doublemutations can cause altered ABCG2-function and lead to pharmacokinetic changes. These types of in vitro studies are important in studying these less common genetic variants which in lack of study subjects can be hard to study on clinical trials.
  • Kouvonen, Sonja (2024)
    To develop a closed-loop medication management process, monitoring the effects of medication should be integrated into patient information systems through structured recording methods. Sufficient documentation of medication monitoring is a prerequisite for implementing effective medication management and ensuring good quality, individualized care for patients. Medication management for patients with intellectual disabilities on the autism spectrum can be extremely challenging. The characteristics of intellectual disabilities and autism spectrum disorders, comorbidities, and polypharmacy make medication management and monitoring challenging. This study focused on patients with difficult behavioural symptoms. The study aimed to identify the most important symptoms to monitor in assessing the effects of medication in patients with intellectual disabilities on the autism spectrum. Additionally, it defined the time points from the initiation of medication when the effects should be assessed. The study was conducted as a two-round study using the Delphi consensus method in January-February 2024. The expert panel consisted of 12 experts in intellectual disabilities, autism spectrum disorders or in the field of medicine. Lists of behavioural symptoms, other symptoms, and monitoring time points were compiled for the study based on literature and the expertise of the research group. Experts were presented with a list of symptoms, and in the first round, symptoms that exceeded a consensus threshold of 50% proceeded to the second round. In the second round, experts ranked symptoms based on their importance for monitoring using Likert-scale questions. The data were analysed using quantitative and qualitative methods. Experts considered 9 behavioural symptoms and 22 other symptoms as highly important or important to monitor. The experts identified severe symptoms indicating self-harm or harm to others as the most critical behavioural symptoms to monitor. The most important other monitored symptoms included common comorbidities and symptoms within the patient group or adverse effects of medication. The effects of medication should be evaluated regularly, at least at the 4-week mark after initiating medication and after 3 months evaluations should be conducted at intervals of every 6 months. Monitoring the effects of medication was perceived to pose many challenges, and monitoring is not always carried out at a sufficient level. Many different symptoms should be monitored because patients are individual and present a variety of symptoms. It is essential to have a good understanding of the patient's condition before starting medication to assess the medication's impact on the patient's behaviour or other symptoms. The study highlighted the lack of structured monitoring forms and the need for monitoring tools.
  • Tyni, Oona (2023)
    Verensiirtoja tarvitaan monissa erilaisissa tilanteissa, kuten akuutissa verenhukassa, leikkauksissa ja sairauksien hoidoissa. Verivalmisteiden laajan käytön takia, on tärkeää varmistaa veriturvatoiminnalla niiden laatu sekä turvallisuus. Olennainen osa verivalmisteiden laadunvalvontaa on seuloa veren välityksellä leviäviä taudinaiheuttajia. Suomessa veren välityksellä leviävien tautien leviämisen riski on lähes olematon tarkan laadunhallinnan ansioista. Verenluovutusajankohtana oireettomat taudit aiheuttavat kuitenkin riskin laadunhallinnalle. Koska krooninen Chlamydia pneumoniae -infektio voi olla oireeton, on tärkeää tutkia taudin kykyä levitä verivalmisteiden välityksellä. Tätä ennen on kuitenkin tutkittava, löytyykö verivalmisteista edes kyseistä bakteeria. C. pneumoniae on gram-negatiivinen solunsisäinen bakteeri, joka aiheuttaa ihmisillä erilaisia akuutteja hengitystieinfektioita, kuten keuhkokuumetta, nielutulehdusta ja sinuiittiä. Vaikka suurin osa tartunnoista on oireettomia tai lieväoireisia, voi infektio muuttua hoitamattomana krooniseksi. Akuutissa infektiossa C. pneumoniae infektoi pääasiassa keuhkojen epiteelisoluja sekä alveolaarisia makrofageja. Infektion pitkittyessä bakteeri voi levitä muihin elimistön soluihin valkosolujen välityksellä. Tämä bakteerin kyky aiheuttaa kroonista infektiota sen muuttuessa persistenttiin muotoon tekee bakteerista hyvin menestyvän. Tämän tutkimuksen tavoitteena oli selvittää, kuinka paljon C. pneumoniae -bakteeria esiintyy suomalaisessa luovutusveressä. C. pneumoniae -bakteerin DNA:n tunnistamiseen kokoverestä käytettiin kolmea eri PCR-menetelmää: kvantitatiivista PCR:ää, sisäkkäistä PCR:ää ja digitaalista pisara PCR:ää. Työn ensimmäinen vaihe oli suunnitella ja optimoida nämä kolme PCR-menetelmää. Menetelmien pystyttämisen jälkeen 40 verinäytettä tutkittiin kyseisillä PCR-menetelmillä. Lisäksi samoista verinäytteistä määritettiin C. pneumoniae spesifisen vasta-aineen, immunoglobuliini G:n, määrät ELISA-immunomäärityksellä. Verinäytteitä tutkittaessa C. pneumoniae -bakteerin esiintyvyys suomalaisessa luovutusveressä oli hyvin pieni. Vain kahden näytteen (2/40) epäiltiin olevan mahdollisesti positiivisia, sillä nämä antoivat mahdollisia positiivisia tunnistuksia vähintään kahdessa PCR-ajossa. C. pneumoniae spesifisten IgG vasta-aineiden esiintyvyys oli suurempi; näytteistä 50 % oli igG positiivisia. IgG vasta-aineiden esiintyvyyden ei todettu korreloivan iän tai sukupuolen kanssa. Aiemmissa tutkimuksia C. pneumoniae -bakteerin esiintyvyys luovutusveressä on vaihdellut 7–46 %:n välillä. Bakteerin esiintyvyyden jäädessä hyvin alhaiseksi on mahdollista, että PCR-menetelmien detektioherkkyys ei riittänyt tässä tutkimuksessa tunnistamaan toistettavasti mahdollisia positiivisia näytteitä. Näin ollen PCR-menetelmien lisäoptimointi olisi tarpeen.
  • Heininen, Susanna (2022)
    The medication-use process in hospitals includes several risks which can lead to medication errors. Medication errors can be prevented and managed by adding automation and technology solutions to the medication-use process, such as clinical decision support system (CDSS) integrated into electronic medication administration record (eMAR), unit dose drug distribution system (UDDDS), automated dispensing cabinet (ADC) and bar-code medication administration (BCMA). A closed loop medication management process can be created by integrating different methods and technologies seamlessly. It improves medication safety by decreasing human errors and allows the access to the patient’s medication information in real time. The closed loop medication management process is not yet fully in use in any Finnish hospital, but parts of it have already been implemented. Helsinki University Hospital (HUS) wants to improve the closed loop medication management process by piloting the use of unit dose (UD) bags in the medication- use process and to study its effects on medication safety. The aim of the study was to determine the incidence of the medication dispensing errors and procedural errors, the working time of the nurses, and the nurses' opinions on the current drug dispensing model in a hospital ward before the introduction of the unit dose drug distribution system. The study was conducted as a mixed-method study, which utilized an observational method and an online survey. The data were collected at HUS internal medicine inpatient ward by observing the dispensing of morning medicines for ten days and through an electronic survey sent to the ward’s nurses. The overall incidence of dispensing errors in the current drug dispensing process was 40,1 % (553/1379). Of these, 3,2 % (44/1379) were medication dispensing errors, and after the excluding prescribing errors (n=22), the incidence was 1,6 %. These prescription errors were mainly related to prescribing medications outside the hospital's formulary. In addition, the incidence of procedural errors was 37 % (509/1379). Of the procedural errors, 57 % (292/509) were related to the unattached or missing barcodes and 37 % (186/509) to hygiene deficiencies in drug dispensing. On average, nurses spent 4,5 minutes per patient on medication dispensing and patients had 7 morning medications. The results of the survey also revealed problems related to barcodes as well as hygiene deficiencies, which supported the results of the observations. Significant safety risks, such as unattached barcodes, missing barcodes, and deficiencies in hygiene were identified in the current drug dispensing process. The study indicates that system-based risk management approach is not yet fully understood in hospital units. The root cause of procedural errors should be investigated more and review the ward's instructions with staff, to reduce their incidence in the future. At the end of 2021 a unit dose drug distribution model will be piloted in the ward, which may be one possible way to reduce errors related barcodes and hygiene. In addition, to improve the medication safety, physicians should order medications from hospital's formulary, so that generic substitution would no longer need to be made at the distribution stage. It would be useful to include a category of incorrect orders in the future research setups that investigate medication errors in the dispensing phase to identify such potential risk situations.
  • Niemi, Matias (2021)
    Yhteiskunnan digitalisaatio on lisännyt verkkopalveluiden käyttöä monilla aloilla, ja suurin osa suomalaisista käyttää internetiä esimerkiksi palveluiden tai tuotteiden hankintaan. Erilaisten digitaalisten terveyspalveluiden käyttö on kasvanut viime vuosina, ja koronapandemia on nopeuttanut muutosta. Suomessa useat apteekit ovat perustaneet viime vuosina verkkopalveluita, mutta niiden käyttö on ollut edelleen vähäistä. Tämän tutkimuksen tavoitteena oli tutkia koronapandemian vaikutuksia Yliopiston Apteekin (YA) verkkopalvelun käyttöön. Tutkimuksessa tutkittiin rekisteriaineistojen perusteella kokonais- ja reseptiasiakasmäärän sekä reseptimäärän ja asiakasprofiilin muutosta ennen koronapandemiaa ja sen aikana vuosina 2018-2020. Lisäksi tutkittiin YA:n Lääkeneuvonta- ja asiakaspalveluyksikön (Tiepa) vastaanottamien puhelin- ja chat-yhteydenottojen määrää ja sisältöä sekä kyselyaineiston perusteella apteekin verkkopalvelun käyttäjien näkemyksiä koronapandemian vaikutuksista heidän apteekin verkkopalvelun käyttöön. Monimenetelmätutkimuksessa tutkittiin apteekin verkkopalvelussa tapahtunutta muutosta apteekin asiakas- ja myyntitietojen sekä asiakaskyselyn avulla. Tutkimuksessa hyödynnettiin YA:n myynti-, asiakas-, Tiepa- ja pikanoutorekisteriaineistoja sekä YA:n toteuttaman ’’Verkkoapteekki 2020’’ -kyselytutkimuksen aineistoa. Aineistot analysoitiin kvantitatiivisesti Microsoft Excel (16.0) ja IBM SPSS (26) ja R (4.0.3) tilasto-ohjelmistoilla. Myyntiä tai asiakasmääriä mittaavia aineistoja analysoitiin indeksin pisteluvuilla. Kokonais- ja reseptiasiakasmäärälle sekä reseptiasiakkaille keskimäärin toimitettujen reseptien lukumäärälle laskettiin myös tilastollinen merkitsevyys lineaarisella regressioanalyysillä 95 % luottamusvälein. Kyselytutkimuksen lopputulosmuuttujista tehtiin kuvaileva tilastoanalyysi frekvenssijakaumien ja prosenttiosuuksien avulla. YA:n verkkopalvelun käyttö lisääntyi merkittävästi tarkastelujaksolla 2018 – 2020. Kokonais- ja reseptiasiakasmäärän muutokset koronapandemian aikana olivat tilastollisesti merkitseviä. Pandemian vaikutus verkkopalvelussa vastasi pandemiaa edeltävän lineaarisen kehityksen perusteella kokonaisasiakasmäärässä 6 kuukauden ja reseptiasiakasmäärässä yli 3 vuoden kehitystä. Apteekin verkkopalvelun käyttö ja tiettyjen koronasairauden hoitoon median mukaan soveltuvien valmisteiden myynnit lisääntyivät merkittävästi kevään 2020 aikana. Tiepan chat-palvelua käytettiin paljon terveyteen ja hyvinvointiin liittyvien kysymysten selvittämiseen. Koronapandemia lisäsi erityisesti iäkkäämpien asiakkaiden (yli 55- ja erityisesti yli 65-vuotiaiden) apteekin verkkopalvelun käyttöä. Infektioriskin vähentäminen oli tärkeä syy apteekin verkkopalvelun käyttöön. Vuoden 2020 aikana apteekin verkkopalvelussa tapahtui digiloikka. Koronapandemia lisäsi merkittävästi ja tilastollisesti merkitsevästi apteekin verkkopalvelun käyttöä ja toi sen uusiksi käyttäjiksi myös iäkkäämpiä asiakkaita. Erityisesti reseptilääkkeiden hankinta apteekin verkkopalvelusta lisääntyi. Tiepa oli tärkeä tietolähde ennen koronapandemiaa ja sen aikana. Pandemia-aikana luotettavan lääkeinformaation tarve korostuu. Jatkotutkimuksissa on tärkeä tutkia apteekin verkkopalvelun käytön ja asiakasryhmien muutoksia sekä asiakkaiden kokemuksia verkkopalvelusta osana YA:n monikanavaista apteekkipalvelua.
  • Suominen, Riina (2022)
    COVID-19 pandemic has caused a global crisis and its effects have also been reflected to pharmaceutical supply in Finland. At the beginning of the crisis the effects were especially evident in the consumption of self-medication analgesics, prescription drugs and drugs related to respiratory diseases. In a global crisis, collaboration between the public, private and third sector is becoming increasingly important, and it is important to consider how to develop the capacity for collaboration between organizations in different sectors during a pandemic. The purpose of this study was to find out how the cross-sector collaboration between the public, private and third sector of the pharmaceutical supply in Finland was organized in the crisis caused by the COVID-19 pandemic, what was the role of the cross-sector collaboration and how the preparedness and crisis management of the drug supply could be improved. The study was conducted as a semi-structured interview survey and the interviewees were selected to cover the various sectors of Finnish pharmaceutical care as well as possible. The analysis was performed by the Gioia method and thematic design. Based on the study the organization of cross-sector collaboration was both operator- and authority-oriented and the legislation and environment in the drug supply created the framework for the crisis management. Both the authorities and the advocacy organizations can be described as having acted as hubs for organization. There was no clear crisis organization in drug supply, but different actors were involved in the crisis management at different stages of the crisis. The role of collaboration was emphasized in the sharing of information and resources and in joint solution of problems. The collaboration enabled foresight and preparedness, a focus on core tasks and crisis management, and mutual benefit. Lessons learned from the COVID-19 pandemic include the need to increase and intensify collaboration, increase crisis plans and crisis training, update the system of security of supply and mandatory reserve supplies, increase self-sufficiency, and increase overall governance. Cross-sectoral collaboration was seen as useful in crisis management of the crisis in the drug supply chain. The collaboration promotes the formation of a common picture of the situation and the flow of information from the field to decision-makers. Comparing the results of this study with the literature it can be said that the results partially support the previous literature. However, crisis management of the pharmaceutical supply chain from the organization of cross-sectoral collaboration point of view has not been studied in the past.
  • Andersson, Ville (2019)
    The Finnish Medicines Agency, Fimea, is the authority responsible for supervision pharmacies in Finland. Recently, there has been more interest in Fimea to improve its supervision of community pharmacies. For this purpose, a questionnaire was made. Prior to the making of the questionnaire, community pharmacy supervision practices were studied in Nordic countries and in the UK. Additionally, faults found in Finnish community pharmacy inspections in 2016–2018 were classified by analysing anonymized fault lists (n=94) separated from inspection reports. When the most common faults were identified, it was possible to include questions concerning these faults into the questionnaire. A modified version of the Delphi method was used when developing the questionnaire. Comments on the applicability of the questions were given by a panel of experts consisting of inspectors of Fimea. The questionnaire was subsequently edited in accordance with the given comments. Separate versions of the questionnaire form were developed for community pharmacies and for their subsidiary pharmacies. At the end of this study, the questionnaire was sent to seven pharmacies and to three subsidiary pharmacies. After the results of the questionnaire were collected, Fimea gave feedback on the questionnaire. 25 categories were created by classifying faults found from pharmacy inspections. The most common inspection observations were faults in storage condition monitoring (97 % of pharmacies), narcotics (86 %), implementation of code of conduct (86 %), product errors (86 %) and preparation of medicines ready for use (81 %). The questionnaire begins by asking basic information about the pharmacy. Following questions concern the personnel and their further adequacy training. The questionnaire also includes several questions on the code of conduct within the pharmacy. Additionally, there are questions about storage condition monitoring, dispensary and accounting of narcotics. At the end of the questionnaire, there are also a few questions about the European Medicines Verification System (EMVS) which will be implemented by February 2019. Support from the inspectors of Fimea and studying regulations of pharmacies helped identify appropriate questions for the questionnaire. However, the perspective of the questionnaire may be limited due to the questionnaire being developed based up on faults found from inspections. The faults observed from inspections across pharmacies in Finland have been very similar with some of them being also alarmingly common. Because many of the observed faults are relatively easy to fix, simple corrective measures could be implemented to improve the situation across several pharmacies. Thus, usage of questionnaires, such as one made in this study, could be considered a feasible way of improving supervision of pharmacies.
  • Virtanen, Anne (2023)
    This qualitative study was carried out as a semi-structured interview study, which was supplemented with quantitative information from centralized cytotoxic preparation units in Finland hospital pharmacies and with information about interviewees. Quantitative information was collected using questionnaires. The proportion of centralized cytotoxic preparation units that responded to the background information questionnaire was 95% (19/20) of all centralized cytotoxic preparation units in mainland Finland. In the autumn of 2022, hospital pharmacy employees (n=23) participating in the reconstitution of cancer drugs were interviewed. On average, the interviewees had 14 years of work experience in the reconstitution of anticancer medicines. They represented 75% (15/20) of the centralized cytotoxic preparation units in mainland Finland, covering centralized cytotoxic preparation units of different sizes and locations in different parts of Finland. In 2021, 88% of the anticancer medicines in all centralized cytotoxic preparation units in Finland were reconstituted at the workplaces of interviewed. According to the interviews, the reconstitution of anticancer medicinal products involves the possibility of an error in several stages of the process. An error can occur when prescribing the medicine, transferring prescription information, when selecting the raw materials, reconstituting of the cancer medicine and during transport. The interviewees identified 24 risks associated with these stages, that could lead to patient safety incidents. Safeguards have been built to avert errors or promote the detection of the errors. Based on the research data, the safeguards were classified into six categories: the development of the technology, guiding work through guidelines, strengthening competence, standardizing practices, controlled working environment and learning from deviations. In Finland, it has not previously been studied or classified with which functions and principles the centralized cytotoxic preparation units have built safeguards to prevent patient safety incidents. This study shows that reconstitution of cancer medicines is a risky process. To improve the quality of reconstituted cancer medicines and patient safety, both the system- and person-focused safeguards have been built into the risk points of the processes of the centralized cytotoxic preparation units, but their utilization varied between centralized cytotoxic preparation units. Based on comprehensive data, the research result can be generalized to centralized cytotoxic preparation units in Finland hospital pharmacies.
  • Repo, Amanda (2022)
    The use of different methods of extended reality (xR) as a support in teaching has been under research for a long time. Although the use of various xR-technologies in other fields of healthcare, such as medical and nursing education, is already common, their use in pharmacy education is not yet well established. There is evidence that xR-technology has a positive impact for example on students’ motivation and learning outcomes. On the other hand, there are limiting factors that inhibit the technology becoming widespread, such as costs as well as a lack of knowledge about the technology usability. The aim of the study was to investigate usability and advantages of the augmented reality (AR) in a laboratory course as an educational supportive tool by using AR-glasses. The aim was also to investigate the learning outcomes of the students who participated in the study in three different phases: before carrying out the laboratory work (pre), immediately after the laboratory work (post) and in the course exam (delayed). Furthermore, the motivation of the students to use new technology in their studies was studied. The research was done in a collaboration with the Centre for University Teaching and Learning (HYPE) and with Sciar Company Oy. The researchers of HYPE were responsible for the pedagogical point of view, whilst the experts from the Faculty of Pharmacy were responsible for the study measurements of laboratory work related content knowledge. The research was implemented in two laboratory courses in Bachelor of Science level pharmacy studies: Medicinal product II and Pharmaceutical biology and asepsis in the fall of 2020. The students (n=18) prepared eye drops by using AR-glasses in the Medicinal product II -course and reference group (n=14) without AR-glasses. In the course of Pharmaceutical biology and asepsis, students (n=7) used AR-glasses to study the microbiological purity of the eye drops by utilizing membrane filtration method in cleanroom and reference group (n=9) without AR-glasses. ln addition, a serial dilution method was performed on a 96-well plate using an AR mobile application. The effect on learning outcomes was evaluated by using six open-ended questions measuring the understanding of content knowledge underlying the laboratory work, that were answered by the students at three different stages of the study (pre, post, delayed). To measure the usability of the AR equipment, a five-point Likert scale questionnaire studied the experimental groups students’ opinions on whether the AR mobile application could provide sufficient guidance and feedback while performing the laboratory work. In an open question, the students had the possibility to comment on the overall user experience of the AR mobile application. There were no statistically significant differences in learning outcomes between the AR-group and the reference group in both laboratory courses. The results showed indicative differences in short-term and long-term learning, with the AR-group achieving better learning outcomes in the short-term and the reference group in the long-term. In the course of Pharmaceutical biology and asepsis, the learning outcomes were the opposite. Students’ were found to be receptivity to the new technology that together with motivation supports positively the learning process. The use of AR-hardware increased certainty and reduced nervousness about the use of AR technology. As a conclusion, the study could not demonstrate the benefit of AR-technology in student learning outcomes. The study was limited by the small sample size. However, further studies are encouraged due to students’ positive attitudes and motivation towards AR technology. Regarding further studies, it is important to take into consideration the different backgrounds and learning methods of students. Thereby, the effects of xR-technologies on learning outcomes can be assessed as objectively as possible.
  • Siltakorpi, Matleena (2021)
    Obesity is a growing health challenge in Finland. Despite the fact, that obesity is recognized as a chronic disease, it remains underdiagnosed and undertreated. In the past few years, two new anti-obesity drugs have entered the market to support the lifestyle changes Anti-obesity medication would be a natural option to support lifestyle changes, but physicians have not widely adopted the medication in their treatment patterns. The aim of this study was to understand, what are the abilities of primary care physician (PCP) to treat obesity, considering their knowledge, resources and, local care pathways. In addition, the study sought to determine the most important factors, that are involved in the initiation of anti-obesity medication. The study was conducted as a semi-structured thematic interview. A total of nine PCPs from all over Finland were interviewed for the study. Of these, three worked on the private sector and six on the public sector. The interviews were conducted during October-November 2020. The framework of the interviews was built based on the previous studies and information within a pharmaceutical company specializing in the treatment of obesity. The content was analysed with inductive content analysis. PCPs interested in the treatment of obesity raised the topic of weight quite easily in various situations and some of them mentioned that they even find it easy to bring up the subject. However, the subject is mainly brought up when the patient already has some weight-related comorbidities. Preventively, weight is less often talked about, especially because of a lack of human and time resources. Currently the most comprehensive care pathways and interdisciplinary teams are in occupational healthcare. In occupational healthcare, resources are perceived as adequate and the interdisciplinary teams works well. In most healthcare centers, a separate care pathway for the treatment of obesity had not been built. In general, knowledge of the obesity treatment was considered adequate, but education on the biological basis of obesity is needed. Most of the PCPs knew about the new anti-obesity drugs and had positive attitude towards them, but they did not prescribe the drugs themselves. The most significant barrier to prescribe the anti-obesity drugs, was the price of the products and the lack of reimbursement. In addition, experience with anti-obesity drugs is limited and the need for education is high. Currently, occupational health physicians have better abilities to treat obesity in terms of care pathways, interdisciplinary teams and, resources than PCPs in public healthcare. The conditions are also better for the implementation of pharmacotherapy as resources and care pathways enables proper lifestyle guidance alongside pharmacotherapy. Prior to reimbursement, pharmacotherapy may not be a realistic option in the public sector, and the conditions for proper lifestyle guidance alongside pharmacotherapy are not sufficient in all locations.