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Sökning: AMNE:(MEDICAL AND HEALTH SCIENCES Basic Medicine Pharmacology and Toxicology) > Linnéuniversitetet

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1.
  • Lindström, Kjell, 1946-, et al. (författare)
  • Can selective serotonin inhibitor drugs in elderly patients in nursing homes be reduced?
  • 2007
  • Ingår i: Scandinavian Journal of Primary Health Care. - London : Informa Healthcare. - 0281-3432 .- 1502-7724. ; 25:1, s. 3-8
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To investigate whether treatment with selective serotonin reuptake inhibitors (SSRIs) could be withdrawn for elderly residents who had been on treatment for at least one year and to evaluate a method for systematic drug review. DESIGN: Open, prospective, interventional study. SETTING: Four counties in Sweden. SUBJECTS: Elderly residents at 19 nursing homes, with ongoing treatment with SSRIs for more than one year. MAIN OUTCOME MEASURES: Clinical evaluation, registration of drugs used and rating with Montgomery-Asberg Depression Rating Scale (MADRS). A semi-structured telephone interview with 15 participating physicians and 19 nurses. RESULTS: About one-third of all 822 residents in the nursing homes had ongoing antidepressant treatment, predominantly with SSRIs; 75% of them had been treated with SSRIs for at least one year and 119 (60%) of these were considered eligible for the study. The intervention was judged successful in 52% of these residents of whom 88% had a MADRS rating of less than 20 points. The GPs and the nurses experienced the method as practicable. CONCLUSIONS: Withdrawal of SSRI treatment was successful in the majority of cases. The MADRS may be a valuable addition to clinical evaluation when deciding whether to end or continue SSRI treatment.
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2.
  • Ekman, Elisabet, et al. (författare)
  • Awareness among nurses about reporting of adverse drug reactions in Sweden
  • 2012
  • Ingår i: Drug, Healthcare and Patient Safety. - 1179-1365. ; 4, s. 61-66
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: The purpose of this study was to investigate awareness among nurses regarding their new role as reporters of adverse drug reactions in Sweden and factors that may influence reporting by nurses.Methods: In 2007, all nurses were included in the adverse drug reaction reporting scheme in Sweden. A questionnaire was sent to 753 randomly selected nurses in September 2010.Results: Of the 453 (60%) responding nurses, 265 (58%) were aware that nurses were included in the reporting of adverse drug reactions. Sixty-one nurses (14%) stated that they had reported an adverse drug reaction. Fifteen percent (n = 70) of the respondents had received training about reporting of adverse drug reactions. Almost one third of these (n = 21, 30%) had reported an adverse drug reaction on at least one occasion. Among nurses without training, a smaller proportion (n = 40, 11%, P < 0.05) had reported an adverse drug reaction on at least one occasion. The two factors considered most important by nurses for reporting were the severity of the adverse drug reaction and if the reaction was to a newly approved drug. A majority of the nurses (n = 397, 88%) were interested in a training course in pharmacology as part of their ongoing professional development. One third (32%) of all nurses stated that one reason for not reporting a suspected adverse drug reaction was that the physician responsible did not regard the reaction necessary to report.Conclusion: We found that more than half of the study population of nurses in Sweden were aware of their new role as reporters of adverse drug reactions, but few of the responding nurses had reported an adverse drug reaction. Given that training seems to be associated with high reporting frequency, we suggest more training in pharmacovigilance for nurses.
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3.
  • Gillman, Anna, et al. (författare)
  • Oseltamivir-Resistant Influenza A (H1N1) Virus Strain with an H274Y Mutation in Neuraminidase Persists without Drug Pressure in Infected Mallards
  • 2015
  • Ingår i: Applied and Environmental Microbiology. - : American Society for Microbiology. - 0099-2240 .- 1098-5336. ; 81:7, s. 2378-2383
  • Tidskriftsartikel (refereegranskat)abstract
    • Influenza A virus (IAV) has its natural reservoir in wild waterfowl, and emerging human IAVs often contain gene segments from avian viruses. The active drug metabolite of oseltamivir (oseltamivir carboxylate [OC]), stockpiled as Tamiflu for influenza pandemic preparedness, is not removed by conventional sewage treatment and has been detected in river water. There, it may exert evolutionary pressure on avian IAV in waterfowl, resulting in the development of resistant viral variants. A resistant avian IAV can circulate among wild birds only if resistance does not restrict viral fitness and if the resistant virus can persist without continuous drug pressure. In this in vivo mallard (Anas platyrhynchos) study, we tested whether an OC-resistant avian IAV (H1N1) strain with an H274Y mutation in the neuraminidase (NA-H274Y) could retain resistance while drug pressure was gradually removed. Successively infected mallards were exposed to decreasing levels of OC, and fecal samples were analyzed for the neuraminidase sequence and phenotypic resistance. No reversion to wild-type virus was observed during the experiment, which included 17 days of viral transmission among 10 ducks exposed to OC concentrations below resistance induction levels. We conclude that resistance in avian IAV that is induced by exposure of the natural host to OC can persist in the absence of the drug. Thus, there is a risk that human-pathogenic IAVs that evolve from IAVs circulating among wild birds may contain resistance mutations. An oseltamivir-resistant pandemic IAV would pose a substantial public health threat. Therefore, our observations underscore the need for prudent oseltamivir use, upgraded sewage treatment, and surveillance for resistant IAVs in wild birds.
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4.
  • Oreland, Sadia, et al. (författare)
  • Short- and long-term consequences of different early environmental conditions on central immunoreactive oxytocin and arginine vasopressin levels in male rats
  • 2010
  • Ingår i: Neuropeptides. - : Elsevier BV. - 0143-4179 .- 1532-2785. ; 44:5, s. 391-398
  • Tidskriftsartikel (refereegranskat)abstract
    • Numerous studies have provided evidence for an important role for the neuropeptides oxytocin (OT) and arginine vasopressin (AVP) in establishment of social behaviour early in life, such as mother-pup interactions. However, there are few reports examining the consequences of early-life experiences on OT and AVP in male offspring. We have used the maternal separation (MS) model to study the effect of different early environmental conditions in rats. The purpose was to study OT and AVP in rats subjected to prolonged daily MS (360 min, MS360), short daily MS (15 min, MS15) and conventional animal facility rearing (AFR) during postnatal days 1-21. In addition, the influence of the presence or absence of littermates during MS, i.e. litter-wise (l) or individual (i) MS, was assessed. The immunoreactive (ir) peptide levels were measured in the hypothalamus, amygdala and pituitary gland of 3 and 10 weeks old male rats. Assessment in 3-week-old rats revealed that MS15 was associated with low ir OT levels in the hypothalamus and amygdala and high levels in the pituitary gland compared with the MS360 and AFR condition. In the amygdala, differences between groups were also detected in adulthood. MS studies commonly use either MS15 or AFR as a control for prolonged MS. The present results show differences in MS360 rats as compared to MS15 but not AFR rats. Consequently, comparisons between prolonged MS with either short periods of MS or AFR will generate divergent results, hence, making the outcome of MS difficult to compare between studies. Moreover, the different early environments had no effect on ir AVP levels. In conclusion, OT in the amygdala was most sensitive to MS. Besides both short- and long-term consequences, distinct effects were seen after litter and individual separation, respectively. We propose that environmentally induced alterations in OT transmission due to disrupted mother-pup interactions early in life may cause altered susceptibility to challenges later in life.
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5.
  • Hasan, Badrul, 1984-, et al. (författare)
  • The Gull (Chroicocephalus brunnicephalus) as an Environmental Bioindicator and Reservoir for Antibiotic Resistance on the Coastlines of the Bay of Bengal
  • 2014
  • Ingår i: Microbial Drug Resistance. - : Mary Ann Liebert Inc. - 1076-6294 .- 1931-8448. ; 20:5, s. 466-471
  • Tidskriftsartikel (refereegranskat)abstract
    • The presence and frequency of multiresistant bacteria in wild birds act as indicators of the environmental contamination of antibiotic resistance. To explore the rate of contamination mediated by Escherichia coli, 150 fecal samples from the brown-headed gull (Chroicocephalus brunnicephalus) and 8 water samples from the Bay of Bengal area were collected, cultured, and tested for antibiotic susceptibility. Special attention was paid to extended-spectrum beta-lactamase (ESBL)-producing isolates, which were further characterized genetically. Antibiotic resistance was found in 42.3% (36/85) of the E. coli isolates and multidrug resistance in 11.8%. Isolates from the area with a higher human activity were more resistant than those from an area with a lower level of activity. Most frequent was resistance to ampicillin (29.4%), followed by trimethoprim-sulfamethoxazole (24.7%) and quinolones (22.4%). Carriage of ESBL-producing E. coli was relatively high (17.3%) in the gulls, whereas no ESBL producers were found in the water. All ESBL-producing E. coli isolates, but one, carried blaCTX-M-15 or blaCTX-M-15-like genes. A blaCTX-M-14-like enzyme was found as an exception. Gulls from two different colonies shared E. coli clones and harbored the clinically relevant sequence types ST10, ST48, and ST131. The high frequency of antibiotic resistance and ESBL production among E. coli isolates from gulls indicates that the environmental contamination of antibiotic resistance has already gone far on the coastlines of the Bay of Bengal. Considering the limited control over the antibiotic consumption and waste from human activities in Bangladesh, there is no easy solution in sight.
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6.
  • Hellström, Lina, et al. (författare)
  • Impact of the Lund Integrated Medicines Management (LIMM) model on medication appropriateness and drug-related hospital revisits.
  • 2011
  • Ingår i: European Journal of Clinical Pharmacology. - : Springer Science and Business Media LLC. - 0031-6970 .- 1432-1041. ; 67:7, s. 741-752
  • Tidskriftsartikel (refereegranskat)abstract
    • PurposeTo examine the impact of systematic medication reconciliations when admitted to hospital, and medication review while in hospital, on the number of inappropriate medications and unscheduled drug-related hospital revisits in elderly patients.MethodsA prospective, controlled study in 210 patients, aged 65 years or older, who were admitted to one of three internal medicine wards at a University Hospital in Sweden. Patients received either standard care or care according to the Lund Integrated Medicines Management (LIMM) model. A multi-professional team, including a clinical pharmacist, provided medication reconciliations on admission and medication reviews during the hospital stay for the LIMM group. Blinded reviewers evaluated the appropriateness of the prescribing (using the Medication Appropriateness Index) on admission and discharge, and assessed the probability that a drug-related problem was the reason for any patient readmitted to hospital or visiting the emergency department within three months of discharge (using WHO causality criteria).ResultsThere was a greater decrease in the number of inappropriate drugs in the intervention group than in the control group for both the intention-to-treat population (51% [95% CI 43-58%] versus 39% [95% CI 30-48%], p=0.0446) and the per-protocol population (60% [95% CI 51-67%] versus 44% [95% CI 34-52 %], p=0.0106). There were 6 revisits to hospital in the intervention group which were judged as ‘possibly, probably or certainly drug-related’, compared with 12 in the control group (p=0.0469).ConclusionIn this study, medication reconciliation and reviews provided by a clinical pharmacist in a multi-professional team significantly reduced the number of inappropriate drugs and unscheduled drug-related hospital revisits for elderly patients.
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7.
  • Gillman, Anna, et al. (författare)
  • Oseltamivir Resistance in Influenza A(H6N2) Caused by an R292K Substitution in Neuraminidase Is Not Maintained in Mallards without Drug Pressure
  • 2015
  • Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 10:9
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Wild waterfowl is the natural reservoir of influenza A virus (IAV); hosted viruses are very variable and provide a source for genetic segments which can reassort with poultry or mammalian adapted IAVs to generate novel species crossing viruses. Additionally, wild waterfowl act as a reservoir for highly pathogenic IAVs. Exposure of wild birds to the antiviral drug oseltamivir may occur in the environment as its active metabolite can be released from sewage treatment plants to river water. Resistance to oseltamivir, or to other neuraminidase inhibitors (NAIs), in IAVs of wild waterfowl has not been extensively studied. Aim and Methods In a previous in vivo Mallard experiment, an influenza A(H6N2) virus developed oseltamivir resistance by the R292K substitution in the neuraminidase (NA), when the birds were exposed to oseltamivir. In this study we tested if the resistance could be maintained in Mallards without drug exposure. Three variants of resistant H6N2/R292K virus were each propagated during 17 days in five successive pairs of naive Mallards, while oseltamivir exposure was decreased and removed. Daily fecal samples were analyzed for viral presence, genotype and phenotype. Results and Conclusion Within three days without drug exposure no resistant viruses could be detected by NA sequencing, which was confirmed by functional NAI sensitivity testing. We conclude that this resistant N2 virus could not compete in fitness with wild type subpopulations without oseltamivir drug pressure, and thus has no potential to circulate among wild birds. The results of this study contrast to previous observations of drug induced resistance in an avian H1N1 virus, which was maintained also without drug exposure in Mallards. Experimental observations on persistence of NAI resistance in avian IAVs resemble NAI resistance seen in human IAVs, in which resistant N2 subtypes do not circulate, while N1 subtypes with permissive mutations can circulate without drug pressure. We speculate that the phylogenetic group N1 NAs may easier compensate for NAI resistance than group N2 NAs, though further studies are needed to confirm such conclusions.
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8.
  • Bondesson, Åsa ÅB, et al. (författare)
  • A structured questionnaire to assess patient compliance and beliefs about medicines taking into account the ordered categorical structure of data
  • 2009
  • Ingår i: Journal of Evaluation In Clinical Practice. - : Wiley. - 1356-1294 .- 1365-2753. ; 15:4, s. 713-723
  • Tidskriftsartikel (refereegranskat)abstract
    • RATIONALE, AIMS AND OBJECTIVE: The objectives were to describe and evaluate the structured medication questionnaire and to improve data handling of results from the Morisky four-item scale for patient compliance and Beliefs about Medicines Questionnaire-specific (BMQ-specific). METHODS: A questionnaire was developed with the purpose of being used when identifying medication errors and assessing patient compliance to and beliefs about medicines. RESULTS: A majority of the respondents (62%; CI 45-77%) had at least one medication error. Assuming that all items are equally important in the Morisky four-item scale we presented four alternative ways to create a unidimensional global scale. A two-dimensional global scale was also constructed. The results from the BMQ-specific were presented in different ways, all taking into account that the scale has ordered verbal categories: at the level addressing each specific question, at the sub-scales 'concern' and 'necessity' level and at the global level. CONCLUSIONS: The structured medication questionnaire can be used in daily practice as a tool to identify drug-related problems. The choice of how to use and present data from those scales in research depends on patient characteristics and how discriminating one would like the scales to be.
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9.
  • Göransson, Ulf, 1970-, et al. (författare)
  • The toxins of nemertean worms
  • 2019
  • Ingår i: Toxins. - : MDPI. - 2072-6651. ; 11:2, s. 1-36
  • Tidskriftsartikel (refereegranskat)abstract
    • Most ribbon worms (phylum: Nemertea) are found in marine environments, where they act as predators and scavengers. They are characterized by an eversible proboscis that is used to hunt for prey and thick mucus covering their skin. Both proboscis and epidermal mucus mediate toxicity to predators and preys. Research into the chemical nature of the substances that render toxicity has not been extensive, but it has nevertheless led to the identification of several compounds of potential medicinal use or for application in biotechnology. This review provides a complete account of the current status of research into nemertean toxins.
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10.
  • Hovstadius, Bo, 1955-, et al. (författare)
  • Factors leading to excessive polypharmacy.
  • 2012
  • Ingår i: Clinics in Geriatric Medicine. - : Elsevier. - 0749-0690 .- 1879-8853. ; 28:2, s. 159-172
  • Tidskriftsartikel (refereegranskat)abstract
    • There are numerous risk factors for patients to develop excessive polypharmacy. The most prominent risk factors are associated with sociodemographics and the patients’ conditions. Risk factors associated with patient behavior, such as patient’s self medication with all types of medications, have not been observed to the same extent but might be at the same level of importance for patients developing excessive polypharmacy. Risk factors related to physicians, and the interaction between patient and physician, are studied to a much lesser extent. The few studies conducted regarding the large variation in physicians’ individual prescribing practices, in terms of polypharmacy, add another perspective to the complexity of the area. Interventions aiming to improve communication between GP and hospital specialist, to create support systems for medical reviews that include all patients’ medications, and to improve the knowledge of multiple prescribing might have the largest potential to better manage excessive polypharmacy.
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