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Sökning: hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Psykiatri) > Forskningsöversikt

  • Resultat 1-10 av 353
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1.
  • Schöll, Michael, 1980, et al. (författare)
  • Biomarkers for tau pathology.
  • 2019
  • Ingår i: Molecular and cellular neurosciences. - : Elsevier BV. - 1095-9327 .- 1044-7431. ; 97, s. 18-33
  • Forskningsöversikt (refereegranskat)abstract
    • The aggregation of fibrils of hyperphosphorylated and C-terminally truncated microtubule-associated tau protein characterizes 80% of all dementia disorders, the most common neurodegenerative disorders. These so-called tauopathies are hitherto not curable and their diagnosis, especially at early disease stages, has traditionally proven difficult. A keystone in the diagnosis of tauopathies was the development of methods to assess levels of tau protein in vivo in cerebrospinal fluid, which has significantly improved our knowledge about these conditions. Tau proteins have also been measured in blood, but the importance of tau-related changes in blood is still unclear. The recent addition of positron emission tomography ligands to visualize, map and quantify tau pathology has further contributed with information about the temporal and spatial characteristics of tau accumulation in the living brain. Together, the measurement of tau with fluid biomarkers and positron emission tomography constitutes the basis for a highly active field of research. This review describes the current state of biomarkers for tau biomarkers derived from neuroimaging and from the analysis of bodily fluids and their roles in the detection, diagnosis and prognosis of tau-associated neurodegenerative disorders, as well as their associations with neuropathological findings, and aims to provide a perspective on how these biomarkers might be employed prospectively in research and clinical settings.
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  • Sawyer, Emily, et al. (författare)
  • Defining short and long sleep duration for future paediatric research: A systematic literature review
  • 2019
  • Ingår i: Journal of Sleep Research. - : Wiley. - 0962-1105 .- 1365-2869. ; 28:6
  • Forskningsöversikt (refereegranskat)abstract
    • © 2019 European Sleep Research Society Short and long sleep patterns in children have been associated with a range of poor health outcomes. However, there is no consensus regarding the definitions of these abnormal sleep parameters in childhood for use in paediatric research. Given that there is a clear lack of definitions for sleep duration throughout paediatric sleep literature, this review aimed to establish recommendations for standard cut-offs of short and long sleep for children aged 1–16 years to enable homogeneity in future studies of paediatric sleep duration. Four databases were systematically searched to identify prospective studies that defined short or long sleep patterns in children. Included papers (38) were assessed for methodological quality, and their definitions were extracted to examine the current applied cut-offs in the literature for short or long sleep duration. The definitions were analysed in a regression model to summarize applied cut-offs from subjective data into cut-offs for short and long sleep duration. These models were fitted to reference values of three commonly cited paediatric population studies to establish new definitions of sleep duration for future use in research. Across the age groups there was little consensus in applied cut-offs for short and long sleep duration. This study found the best compromise for short sleep was defined as the 2.5th centile (hours = 0.25*age + 11) and long sleep as the 97.5th centile (hours = 0.017*age 2 −0.68*age + 16) of sleep duration in children. Recommendations for the hourly cut-offs of short and long sleep duration based on these percentiles were described.
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5.
  • Steinke, E., et al. (författare)
  • Determinants of sexual dysfunction and interventions for patients with obstructive sleep apnoea : a systematic review
  • 2016
  • Ingår i: International journal of clinical practice (Esher). - : Hindawi Limited. - 1368-5031 .- 1742-1241. ; 70:1, s. 5-19
  • Forskningsöversikt (refereegranskat)abstract
    • AimsObstructive sleep apnoea (OSA) may negatively affect a couple's sexual relationship. This systematic review evaluated what characteristics are determinants of sexual function and dysfunction in women and men with OSA, and what interventions are shown to be effective.MethodsA systematic literature review was conducted using PubMed, CINAHL, Cochrane and TRIP, and articles published between January 2004 and December 2014 in English; original research; adults ≥ 18 years; and both experimental and non-experimental designs. The Effective Public Health Practice Project Quality Assessment Tool for Quantitative Studies was used to assess study quality. Of 21 studies, six studies (no randomised control trials, RCTs) included women and 15 (with six RCTs) studies included men. Extracted data were scrutinised and adjusted until consensus was reached; suitable quantitative data were pooled in statistical meta-analysis.ResultsSexual function was affected similarly in both genders, but effective interventions were reported only for men. In some studies, OSA severity and medications contributed to greater sexual dysfunction. In women, menopausal status, hormone levels and SaO2 < 90% were determinants of sexual dysfunction, while for men factors included BMI, hormonal status and inflammatory markers. Continuous positive airway pressure (CPAP) not only improved clinical measures such as excessive daytime sleepiness but also the erectile and orgasmic function. Nevertheless, sildenafil was superior CPAP with regard to erectile dysfunction.ConclusionsThe findings illustrate important contributors to sexual dysfunction; however, firm generalisations cannot be made. There were limited RCTs and none for women, indicating further RCTs are needed to determine how OSA affects sexual function.
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6.
  • Karlsson, Staffan, 1959-, et al. (författare)
  • Trends in treatment with antipsychotic medication in relation to national directives, in people with dementia : a review of the Swedish context
  • 2017
  • Ingår i: BMC Psychiatry. - London : BioMed Central. - 1471-244X. ; 17, s. 1-9
  • Forskningsöversikt (refereegranskat)abstract
    • Background: The aim of this study was to explore trends in treatment with antipsychotic medication in Swedish dementia care in nursing homes as reported in the most recent empirical studies on the topic, and to relate these trends to directives from the national authorities. Methods: The study included two scoping review studies based on searches of electronic databases as well as the Swedish directives in the field. Results: During the past decade, directives have been developed for antipsychotic medication in Sweden. These directives were generic at first, but have become increasingly specific and restrictive with time. The scoping review showed that treatment with antipsychotic drugs varied between 6% and 38%, and was higher in younger older persons and in those with moderate cognitive impairment and living in nursing homes for people with dementia. A decreasing trend in antipsychotic use has been seen over the last 15 years. Conclusions: Directives from the authorities in Sweden may have had an impact on treatment with antipsychotic medication for people with dementia. Treatment with antipsychotic medication has decreased, while treatment with combinations of psychotropic medications is common. National directives may possibly be even more effective, if applied in combination with systematic follow-ups.
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7.
  • Brew, Bronwyn K., et al. (författare)
  • Paediatric asthma and non-allergic comorbidities : A review of current risk and proposed mechanisms
  • 2022
  • Ingår i: Clinical and Experimental Allergy. - Stockholm : Wiley-Blackwell Publishing Inc.. - 0954-7894 .- 1365-2222. ; 15:9, s. 1035-1047
  • Forskningsöversikt (refereegranskat)abstract
    • It is increasingly recognized that children with asthma are at a higher risk of other non-allergic concurrent diseases than the non-asthma population. A plethora of recent research has reported on these comorbidities and progress has been made in understanding the mechanisms for comorbidity. The goal of this review was to assess the most recent evidence (2016-2021) on the extent of common comorbidities (obesity, depression and anxiety, neurodevelopmental disorders, sleep disorders and autoimmune diseases) and the latest mechanistic research, highlighting knowledge gaps requiring further investigation. We found that the majority of recent studies from around the world demonstrate that children with asthma are at an increased risk of having at least one of the studied comorbidities. A range of potential mechanisms were identified including common early life risk factors, common genetic factors, causal relationships, asthma medication and embryologic origins. Studies varied in their selection of population, asthma definition and outcome definitions. Next, steps in future studies should include using objective measures of asthma, such as lung function and immunological data, as well as investigating asthma phenotypes and endotypes. Larger complex genetic analyses are needed, including genome-wide association studies, gene expression-functional as well as pathway analyses or Mendelian randomization techniques; and identification of gene-environment interactions, such as epi-genetic studies or twin analyses, including omics and early life exposure data. Importantly, research should have relevance to clinical and public health translation including clinical practice, asthma management guidelines and intervention studies aimed at reducing comorbidities.
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8.
  • Schmidt, Manuela (författare)
  • Frequent visitors at the psychiatric emergency room : a literature review
  • 2018
  • Ingår i: Psychiatric quarterly. - : Springer. - 0033-2720 .- 1573-6709. ; 89:1, s. 11-32
  • Forskningsöversikt (refereegranskat)abstract
    • Frequent visitors at the psychiatric emergency room (PER) constitute a small subgroup of patients, yet they are responsible for a disproportionate number of visits and thus claim considerable resources. Their needs are often left unmet and their repetitive visits reflect their dissatisfaction as well as that of PERs' staff. Motivated by these dilemmas, this study systematically reviews the literature about frequent visitors at PER and seeks to answer two questions: What characterizes frequent visitors at PER in the literature? and What characterizes PER in the literature? Based on 29 studies, this paper offers answers to the two questions based on a strength weakness opportunities and threats (SWOT) analysis. The results of the review and subsequent analysis of the literature revealed the multiplicity and complexity of frequent visitors' characteristics and how they appear to converge. Commonalities were more difficult to identify in PER characteristics. In some cases, this happened because the characteristics were poorly described or were context specific. As a result, it was not easy to compare the studies on PER. Based on SWOT and the findings of the analysis, the paper proposes new venues of research and suggests how the field of mental health might develop by taking into account its opportunities and threats.
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9.
  • Nilsson, Kent W., et al. (författare)
  • Gene-environment interaction of monoamine oxidase A in relation to antisocial behaviour : current and future directions.
  • 2018
  • Ingår i: Journal of neural transmission. - : Springer Science and Business Media LLC. - 0300-9564 .- 1435-1463. ; 125:11, s. 1601-1626
  • Forskningsöversikt (refereegranskat)abstract
    • Since the pioneering finding of Caspi and co-workers in 2002 that exposure to childhood maltreatment predicted later antisocial behaviour (ASB) in male carriers of the low-activity MAOA-uVNTR allele, frequent replication studies have been published. Two meta-analyses, one in 2006 and the other in 2014, confirmed the original findings by Caspi and co-workers. In the present paper, we review the literature, note some methodological aspects of candidate gene–environment interaction (cG×E) studies and suggest some future directions. Our conclusions are as follows. (1) The direction of the effect in a cG×E model may differ according to the positive and negative environmental background of the population. (2) There is a predictor-intersection problem such that when measuring one type of maltreatment in a person, other kinds of maltreatment often co-occur. Other forms of abuse are implicitly considered in statistical models; therefore, it is difficult to draw conclusions about the effects of timing and the severity of different forms of stressful life events in relation to ASB. (3) There is also an outcome-intersection problem because of the major intersection of ASB and other forms of mental health problems. It is likely that the G×E with MAOA is related to a common unmeasured factor. (4) For the G×E model, in which the effect of the gene on the outcome variable is dependent on other predictor variables, theoretically, hypothesis-driven statistical modelling is needed.
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10.
  • Nordenskjöld, Axel, 1977-, et al. (författare)
  • Effects of Hesel-coil deep transcranial magnetic stimulation for depression : a systematic review
  • 2016
  • Ingår i: Nordic Journal of Psychiatry. - : Taylor & Francis. - 0803-9488 .- 1502-4725. ; 70:7, s. 492-497
  • Forskningsöversikt (refereegranskat)abstract
    • Background: One third of the depressed patients are not improved by antidepressant drugs and psychological treatments, and there is a need for additional treatments. Repetitive transcranial magnetic stimulation (rTMS) is being developed towards an alternative in treatment-resistant depression. Deep transcranial stimulation (dTMS) with the Hesel-coil (H-coil) is a further development of rTMS aiming to enhance the effect by getting the magnetic pulses to penetrate deeper into the brain.Aims: This report aims to assess the evidence-base for dTMS for depression. The report also includes an assessment of the ethical and economic aspects involved.Methods: A systematic review of the effects of H-coil dTMS on depression was conducted and the scientific support was evaluated using GRADE (Grading of Recommendations Assessment, Development and Evaluation).Results: Only one controlled study was identified. In the sham-controlled randomized study, 212 participants with major depression that had not responded to antidepressant medication were enrolled. A two-point superiority in Hamilton Depression Rating Scale was observed in the dTMS arm vs the sham-arm at 4 weeks, but the difference was not statistically significant. No serious adverse events were reported apart from rare cases of epileptic seizures.Conclusions: The existing scientific support for H-coil dTMS therapy for depression is insufficient. The clinical implication is that the use of dTMS in depression should be restricted to the framework of clinical trials pending further studies. Fortunately, additional studies are underway and the evidence base should presumably improve over the next several years.
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