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Objective: The aim of this paper is to critically re-appraise the published trials assessing amitriptyline for migraine prophylaxis. Methods: We report our methods and results following the Preferred Reporting Items for Systematic Reviews (PRISMA), by searching MEDLINE, EMBASE, Cochrane CENTRAL, and ClinicalTrials.gov for randomized trials of pharmacologic treatments for migraine prophylaxis. We included randomized trials that compared amitriptyline with placebo for migraine prophylaxis in adults. Our outcomes of interest were informed by the Outcome Set for preventive intervention trials in chronic and episodic migraine (COSMIG) and include the proportion of patients who experience a 50% or more reduction in migraine days per month, migraine days per month, and adverse events leading to discontinuation. We assessed risk of bias by using a modified Cochrane RoB 2.0 tool and the certainty of evidence by using the GRADE approach. Results: Our search yielded 10.826 unique records, of which three trials (n = 622) were eligible for data synthesis and analysis. We found moderate certainty evidence that amitriptyline increases the proportion of patients who experience a 50% or more reduction in monthly migraine days, compared to placebo (relative risk: 1.60 (95% CI 1.17 to 2.19); absolute risk difference: 165 more per 1,000 (95% CI 47 more to 327 more). We found moderate certainty evidence that amitriptyline increases the proportion of patients who discontinue due to adverse events compared to placebo (risk difference: 0.05 (95% CI 0.01 to 0.10); absolute risk difference: 50 more per 1,000 (95% CI 10 more to 100 more). Conclusions: Our meta-analysis showed that amitriptyline may have a prophylactic role in migraine patients, however these results are far from robust. This warrants further large-scale research to evaluate the role of amitriptyline in migraine prevention. [ABSTRACT FROM AUTHOR]

Background: The SLC30A8 gene encodes zinc transporter-8 (ZnT8), highly expressed in insulin-secreting pancreatic beta cells, and may contribute to insulin processing and secretion. The SNP 13266634C/T (R325W change) in the SLC30A8 gene has been associated with type 2 diabetes (T2D) development. Genome-wide association studies and subsequent population studies including Europeans and Asians have demonstrated that the rare allele T (Trp325) of SNP 13266634 in the SLC30A8 gene is protective against T2D. Aim: We aimed to investigate whether the SNP rs13266634C/T is associated with T2D and its phenotypes in Turkey, which geographically connects Asia and Europe. Materials and methods: In our study, 650 nonobese individuals (366 T2D and 284 healthy individuals) were enrolled. Target SNP was genotyped by real-time PCR using the LightSNiP Genotyping Assay System. Results: The frequency of the T allele was lower in the T2D group than in the healthy control group (14.6% vs. 24.5%, respectively). The rare variant T of SNP rs13266634 in SLC30A8, located in the last exon of the gene, is associated with an increased c-peptide level, and it was 47.2% protective against type 2 diabetes compared to the C allele (OR = 0.528, 95% CI: 0.399–0.699, p <.001). Conclusions: Our findings indicate consistently with other studies that a rare variant of rs13266634C/T is protective against T2D, as the related first report in the nonobese Turkish population. Comprehensive studies to better understand the envisaged vital molecular role of SLC30A8 in pancreatic beta cells may contribute to developing therapeutic approaches. [ABSTRACT FROM AUTHOR]

Background: Due to the COVID-19 pandemic, matches and soccer-specific training were suspended for several weeks, matches after resumption were congested, and substitutions per team and game increased from three to five. Objective: The aim of this review was to examine possible differences in physical match performance and injuries between before and after the COVID-19 induced break of matches and training in professional male European soccer leagues during the 2019/2020 season. Methods: A systematic search identified all scientifically peer-reviewed publications involving elite male soccer players competing in the European leagues which reported physical match performance variables such as total running distance and running distance at different speed zones and/or injury parameters pre- and post-COVID-19 induced break. Results: In total, 11 articles were included, which were coming from German Bundesliga, Polish Ekstraklasa, Croatian HNL, Spanish La Liga, and Italian Serie A. In all studies investigating the German Bundesliga, most parameters of physical match performance remained unaffected (0.08 ≤ p ≤ 0.82; − 0.15 ≤ ES 0.15), while studies investigating the Polish Ekstraklasa (p ≤ 0.03; − 0.27 ≤ ES − 0.18), Croatian HNL (p ≤ 0.04; − 1.42 ≤ ES ≤ 1.44), Spanish La Liga (p ≤ 0.017; − 0.32 ≤ ES ≤ 5.5), and Italian Serie A (p ≤ 0.014; − 1.01 ≤ ES 0.24) showed a decrease in most parameters of physical match performance after the COVID-19 break. Injury rates were only investigated by studies targeting the German Bundesliga and Italian Serie A. In the majority of studies (3 out of 4 studies), there occurred no difference in injuries between pre- and post-COVID-19 break (p > 0.05; ES = N/A). Conclusion: Results indicate that Bundesliga teams maintained physical match performance during the 9-weeks break in matches and 3-weeks break in group training, whereas a longer match and group training interruption up to 15 weeks and 8 weeks, respectively, in the other leagues appeared to lead to a decreased physical match performance. Regarding injuries, we speculate that the increase in substitutions from 3 to 5 substitutions per game might prevent an increase in injury occurrence during matches. The underlying studies' results provide hints for possible upcoming unexpected interruptions with respect to optimal physical preparations for the resumption of matches and a congested schedule to maintain physical match performance, or for possible rule changes such as 5 instead of 3 substitutions to avoid physical overload during congested match schedules. [ABSTRACT FROM AUTHOR]