Objective Obesity significantly elevates the odds of developing mood disorders. Chronic consumption of a saturated high-fat diet (HFD) elicits anxiodepressive behavior in a manner linked to metabolic dysfunction and neuroinflammation in ****. Dietary omega-3 polyunsaturated fatty acids (n-3 PUFA) can improve both metabolic and mood impairments by relieving inflammation. Despite these findings, the effects of n-3 PUFA supplementation on energy homeostasis, anxiodepressive behavior, brain lipid composition, and gliosis in the diet-induced obese state are unclear. Methods Male C57Bl/6J **** were fed a saturated high-fat diet (HFD) or chow for 20 weeks. During the last 5 weeks **** received daily gavage ("supplementation") of fish oil (FO) enriched with equal amounts of docosahexaenoic (DHA) and eicosapentaenoic acid (EPA) or control corn oil. Food intake and body weight were measured throughout while additional metabolic parameters and anxiety- and despair-like behavior (elevated-plus maze, light-dark box, and fetabolic and mood disturbances associated with excess fat intake and obesity.Background The impact of body mass index (BMI) on pharyngeal fat pads has been well studied, yet no study has assessed its associations on laryngeal morphology. Objectives To study the associations of BMI differences on laryngeal morphology in adult males using computed tomography angiography (CTA) scans. Methods All adult male patients who underwent head and neck CTAs between 2011 and 2018 were initially included and categorized according to their BMI (1) BMI less then 20; (2) 20 ≤ BMI less then 25; (3) 25 ≤ BMI less then 30; (4) 30 ≤ BMI less then 35; and (5) BMI ≥ 35. Anatomical measurements included pre-epiglottic and paraglottic fat-pad dimensions, airway width at the epiglottis tip and base, and epiglottis angle. For statistical analysis, BMI was regarded both as a categorical and continuous variable. Results One hundred and five scans were included. BMI ranged from 15.90 to 44.40 kg/m2. Significant differences were found in pre-epiglottic and paraglottic fat measurements between BMI subgroups 1-5 (Pre-epiglottic fat depth 17.75, 17.74, 19.04, 20.73, and 21.09 mm, respectively, P = 0.005, correlation 0.343, and P less then 0.001 in continuous measurement; Paraglottic space average width 3.5, 5.4, 5.46, 6.85, and 7.38 mm, P less then 0.001, correlation 0.532, and P less then 0.001 in continuous measurement). As BMI increased, the epiglottis-hard-palate angle increased (56.4°, 55.3°, 65.2°, 64°, and 68.4°, P = 0.001, correlation 0.354, and P less then 0.001 in continuous measurement). No significant difference was found in airway width between subgroups at the epiglottis tip or base. Yet, in continuous variables analysis, a significant negative correlation was found between BMI scores and the airway width at the epiglottis base (-0.226, P = 0.02). Conclusions In adult males, BMI is correlated with laryngeal fat-pad volume, affecting its morphology and airway width. https://www.selleckchem.com/products/repsox.html Clinical implications regarding obstructive sleep apnea and voice quality should be further investigated.A new multisystem inflammatory syndrome apparently related to infection with SARS-CoV-2 has recently been reported in older children (known as MIS-C), manifested by severe abdominal pain, cardiac dysfunction and shock. Here, I discuss the similarities and differences between MIS-C and Kawasaki disease, focusing on their epidemiology, aetiology and pathophysiological mechanisms.An amendment to this paper has been published and can be accessed via a link at the top of the paper.Many complex systems, from earthquakes and financial markets to Barkhausen effect in ferromagnetic materials, respond with a noise consisting of discrete avalanche-like events with broad range of sizes and durations, separated by waiting times. Here we focus on the waiting-time statistics in magnetic systems. By investigating the Barkhausen noise in amorphous and polycrystalline ferromagnetic films having different thicknesses, we uncover the form of the waiting-time distribution in time series recorded from the irregular and irreversible motion of magnetic domain walls. Further, we address the question of if the waiting-time distribution evolves with the threshold level, as well as with the film thickness and structural character of the materials. Our results, besides informing on the temporal avalanche correlations, disclose the waiting-time statistics in magnetic systems also bring fingerprints of the universality classes of Barkhausen avalanches and a dimensional crossover in the domain wall dynamics.Family studies have identified a heritable component to self-harm that is partially independent from comorbid psychiatric disorders. However, the genetic aetiology of broad sense (non-suicidal and suicidal) self-harm has not been characterised on the molecular level. In addition, controversy exists about the degree to which suicidal and non-suicidal self-harm share a common genetic aetiology. In the present study, we conduct genome-wide association studies (GWAS) on lifetime self-harm ideation and self-harm behaviour (i.e. any lifetime self-harm act regardless of suicidal intent) using data from the UK Biobank (n > 156,000). We also perform genome wide gene-based tests and characterize the SNP heritability and genetic correlations between these traits. Finally, we test whether polygenic risk scores (PRS) for self-harm ideation and self-harm behaviour predict suicide attempt, suicide thoughts and non-suicidal self-harm (NSSH) in an independent target sample of 8,703 Australian adults. Our GWAS results identified one genome-wide significant locus associated with each of the two phenotypes. SNP heritability (hsnp2) estimates were ~10%, and both traits were highly genetically correlated (LDSC rg > 0.8). Gene-based tests identified seven genes associated with self-harm ideation and four with self-harm behaviour. Furthermore, in the target sample, PRS for self-harm ideation were significantly associated with suicide thoughts and NSSH, and PRS for self-harm behaviour predicted suicide thoughts and suicide attempt. Follow up regressions identified a shared genetic aetiology between NSSH and suicide thoughts, and between suicide thoughts and suicide attempt. Evidence for shared genetic aetiology between NSSH and suicide attempt was not statistically significant.
Objective Obesity significantly elevates the odds of developing mood disorders. Chronic consumption of a saturated high-fat diet (HFD) elicits anxiodepressive behavior in a manner linked to metabolic dysfunction and neuroinflammation in mice. Dietary omega-3 polyunsaturated fatty acids (n-3 PUFA) can improve both metabolic and mood impairments by relieving inflammation. Despite these findings, the effects of n-3 PUFA supplementation on energy homeostasis, anxiodepressive behavior, brain lipid composition, and gliosis in the diet-induced obese state are unclear. Methods Male C57Bl/6J mice were fed a saturated high-fat diet (HFD) or chow for 20 weeks. During the last 5 weeks mice received daily gavage ("supplementation") of fish oil (FO) enriched with equal amounts of docosahexaenoic (DHA) and eicosapentaenoic acid (EPA) or control corn oil. Food intake and body weight were measured throughout while additional metabolic parameters and anxiety- and despair-like behavior (elevated-plus maze, light-dark box, and fetabolic and mood disturbances associated with excess fat intake and obesity.Background The impact of body mass index (BMI) on pharyngeal fat pads has been well studied, yet no study has assessed its associations on laryngeal morphology. Objectives To study the associations of BMI differences on laryngeal morphology in adult males using computed tomography angiography (CTA) scans. Methods All adult male patients who underwent head and neck CTAs between 2011 and 2018 were initially included and categorized according to their BMI (1) BMI less then 20; (2) 20 ≤ BMI less then 25; (3) 25 ≤ BMI less then 30; (4) 30 ≤ BMI less then 35; and (5) BMI ≥ 35. Anatomical measurements included pre-epiglottic and paraglottic fat-pad dimensions, airway width at the epiglottis tip and base, and epiglottis angle. For statistical analysis, BMI was regarded both as a categorical and continuous variable. Results One hundred and five scans were included. BMI ranged from 15.90 to 44.40 kg/m2. Significant differences were found in pre-epiglottic and paraglottic fat measurements between BMI subgroups 1-5 (Pre-epiglottic fat depth 17.75, 17.74, 19.04, 20.73, and 21.09 mm, respectively, P = 0.005, correlation 0.343, and P less then 0.001 in continuous measurement; Paraglottic space average width 3.5, 5.4, 5.46, 6.85, and 7.38 mm, P less then 0.001, correlation 0.532, and P less then 0.001 in continuous measurement). As BMI increased, the epiglottis-hard-palate angle increased (56.4°, 55.3°, 65.2°, 64°, and 68.4°, P = 0.001, correlation 0.354, and P less then 0.001 in continuous measurement). No significant difference was found in airway width between subgroups at the epiglottis tip or base. Yet, in continuous variables analysis, a significant negative correlation was found between BMI scores and the airway width at the epiglottis base (-0.226, P = 0.02). Conclusions In adult males, BMI is correlated with laryngeal fat-pad volume, affecting its morphology and airway width. https://www.selleckchem.com/products/repsox.html Clinical implications regarding obstructive sleep apnea and voice quality should be further investigated.A new multisystem inflammatory syndrome apparently related to infection with SARS-CoV-2 has recently been reported in older children (known as MIS-C), manifested by severe abdominal pain, cardiac dysfunction and shock. Here, I discuss the similarities and differences between MIS-C and Kawasaki disease, focusing on their epidemiology, aetiology and pathophysiological mechanisms.An amendment to this paper has been published and can be accessed via a link at the top of the paper.Many complex systems, from earthquakes and financial markets to Barkhausen effect in ferromagnetic materials, respond with a noise consisting of discrete avalanche-like events with broad range of sizes and durations, separated by waiting times. Here we focus on the waiting-time statistics in magnetic systems. By investigating the Barkhausen noise in amorphous and polycrystalline ferromagnetic films having different thicknesses, we uncover the form of the waiting-time distribution in time series recorded from the irregular and irreversible motion of magnetic domain walls. Further, we address the question of if the waiting-time distribution evolves with the threshold level, as well as with the film thickness and structural character of the materials. Our results, besides informing on the temporal avalanche correlations, disclose the waiting-time statistics in magnetic systems also bring fingerprints of the universality classes of Barkhausen avalanches and a dimensional crossover in the domain wall dynamics.Family studies have identified a heritable component to self-harm that is partially independent from comorbid psychiatric disorders. However, the genetic aetiology of broad sense (non-suicidal and suicidal) self-harm has not been characterised on the molecular level. In addition, controversy exists about the degree to which suicidal and non-suicidal self-harm share a common genetic aetiology. In the present study, we conduct genome-wide association studies (GWAS) on lifetime self-harm ideation and self-harm behaviour (i.e. any lifetime self-harm act regardless of suicidal intent) using data from the UK Biobank (n > 156,000). We also perform genome wide gene-based tests and characterize the SNP heritability and genetic correlations between these traits. Finally, we test whether polygenic risk scores (PRS) for self-harm ideation and self-harm behaviour predict suicide attempt, suicide thoughts and non-suicidal self-harm (NSSH) in an independent target sample of 8,703 Australian adults. Our GWAS results identified one genome-wide significant locus associated with each of the two phenotypes. SNP heritability (hsnp2) estimates were ~10%, and both traits were highly genetically correlated (LDSC rg > 0.8). Gene-based tests identified seven genes associated with self-harm ideation and four with self-harm behaviour. Furthermore, in the target sample, PRS for self-harm ideation were significantly associated with suicide thoughts and NSSH, and PRS for self-harm behaviour predicted suicide thoughts and suicide attempt. Follow up regressions identified a shared genetic aetiology between NSSH and suicide thoughts, and between suicide thoughts and suicide attempt. Evidence for shared genetic aetiology between NSSH and suicide attempt was not statistically significant.
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