老年男性高血压与前列腺增生的相关性研究

目的探讨高血压与良性前列腺增生发生、发展的相关性。方法选择男性前列腺增生患者223例,根据欧洲高血压学会/欧洲心脏学会高血压治疗指南将患者分为血压正常组(正常组)66例和原发性高血压组(高血压组)157例。其中高血压组病程≤15年患者96例,>15年患者61例;杓型血压患者58例和非杓型血压患者99例。检测血压、血脂和前列腺特异性抗原(PSA)等;超声测量并计算前列腺体积;行24h动态血压监测。结果与正常组比较,高血压组全天平均收缩压、前列腺体积、前列腺体积年增长率明显升高(P<0.05)。前列腺体积与高血压病程和PSA呈正相关(r=0.18、r=0.56,P<0.05),前列腺体积年增长率与年龄、PSA及体质量指数呈正相关(r=-0.20、r=0.49、r=0.20,P<0.05)。高血压病程>15年及非杓型血压患者前列腺体积及前列腺体积年增长率明显高于高血压病程≤15年及杓型血压患者(P<0.05)。结论前列腺增生发生、发展与高血压密切相关。高血压病程及其血压昼夜节律对良性前列腺增生均有影响。     

Which type of sedentary behaviour intervention is more effective at reducing body mass index in children? A meta‐analytic review

Sedentary behaviour is emerging as an independent risk factor for paediatric obesity. Some evidence suggests that limiting sedentary behaviour alone could be effective in reducing body mass index (BMI) in children. However, whether adding physical activity and diet‐focused components to sedentary behaviour reduction interventions could lead to an additive effect is unclear. This meta‐analysis aims to assess the overall effect size of sedentary behaviour interventions on BMI reduction and to compare whether interventions that have multiple components (sedentary behaviour, physical activity and diet) have a higher mean effect size than interventions with single (sedentary behaviour) component. Included studies (n = 25) were randomized controlled trials of children (<18 years) with intervention components aimed to reduce sedentary behaviour and measured BMI at pre‐ and post‐intervention. Effect size was calculated as the mean difference in BMI change between children in an intervention group and a control group. Results indicated that sedentary behaviour interventions had a significant effect on BMI reduction. The pooled effect sizes of multi‐component interventions (g = ?0.060～?0.089) did not differ from the single‐component interventions (g = ?0.154), and neither of them had a significant effect size on its own. Future paediatric obesity interventions may consider focusing on developing strategies to decrease multiple screen‐related sedentary behaviours.     

Gestational weight gain in relation to offspring obesity over the life course: a systematic review and bias‐adjusted meta‐analysis

Gestational weight gain (GWG) is considered one of the risk factors for future obesity in the offspring. However, the direction and strength of this association at different periods of offspring life is relatively unknown. This study investigates whether excess or inadequate maternal GWG during pregnancy influences the risk of offspring obesity at different stages in life. A systematic review of published articles was undertaken after a comprehensive search of different databases, and extracted data were meta‐analysed. To quantify offspring obesity estimates in relation to GWG, we stratified obesity estimates within three life stages of the offspring age: <5 years, 5 to <18 years and 18+ years. Our meta‐analysis showed that, compared with offspring of women with adequate GWG, offspring of women who gained inadequate gestational weight were at a decreased risk of obesity (relative risk [RR]: 0.86; 95% confidence interval [CI]: 0.78–0.94), and offspring of women who gained excess weight were at an increased risk of obesity (RR: 1.40; 95% CI: 1.23–1.59). These relationships were similar after stratification by life stage. Findings of this study therefore suggest that excess GWG does influence offspring obesity over the short‐ and long‐term, and should therefore be avoided.     

Noninvasive assessment of liver fibrosis in children with chronic hepatitis C: Shear wave elastography and APRI versus liver biopsy

Background and study aimsHepatitis C virus (HCV) is a major cause of chronic hepatitis. Although liver histopathological examination remains the reference standard for liver fibrosis assessment, noninvasive means of assessment such as shear wave elastography (SWE) and aspartate aminotransferase–platelet ratio index (APRI) have been developed to reduce the need for biopsy. We evaluated the efficacy of SWE and APRI versus liver biopsy for liver fibrosis assessment in children with chronic HCV infection.Patients and methodsFibrosis staging was performed in 46 children (35 boys, 11 girls; mean age: 15.52 ± 2.71 years) with liver biopsy-proven chronic HCV infection according to the METAVIR system. SWE was performed within 6 months of liver biopsy. APRI scores were calculated using data collected on the day of biopsy.ResultsEighteen children had no or mild fibrosis (<F2, 39.1%) and 28 had significant fibrosis (≥F2, 60.9%), with a significant difference between the corresponding mean APRI scores (0.43 ± 0.23 vs 1.26 ± 1.24; p = 0.043). The APRI scores exhibited a significant correlation with the METAVIR stage (r = 0.630; p < 0.001). The SWE values were significantly higher in those with significant fibrosis than in those with no or mild fibrosis (10.43 vs 4.26 kPa; p < 0.000). These values exhibited significant correlations with the METAVIR stage and APRI score (r = 0.863 and 0.544, respectively; both p < 0.001). For differentiating significant fibrosis, the sensitivity, specificity and positive and negative predictive values for an APRI cutoff value of 0.62 were 46.43%, 94.4%, 92.9% and 53.1%, respectively, and these values for an SWE cutoff value of 7.6 kPa were 55.88%, 100%, 100% and 44.4%, respectively.ConclusionIn the clinical assessment of children, the APRI score and SWE can help differentiate between no or mild fibrosis and significant fibrosis. The routine use of SWE and APRI may help decrease the number of liver biopsies performed.     

Obesity and the risk and prognosis of gallstone disease and pancreatitis

Obesity is a risk factor for the formation of cholesterol gallstones and exposes patients to increased risk of gallstone-related complications and cholecystectomy. Rapid weight loss achieved by very low calorie diets or bariatric surgery is also a risk factor for cholelithiasis in obese patients, and therapy should take into account the higher prevalence of gallstones, the possibility of more frequent complications and the need for prophylactic treatment with oral ursodeoxycholic acid during weight loss. Obesity is also frequent in children and adolescents, and the burden of cholesterol cholelithiasis is increasing in this population. The chance to develop acute pancreatitis and the severity of the disease are higher in obese subjects because of specific pathogenic factors, including supersaturated bile and crystal formation, rapid weight loss, and visceral obesity. All health policies aimed at reducing the incidence of obesity worldwide will decrease the incidence of gallstones and gallstone-related complications. The pathophysiological scenarios and the therapeutic implications for obesity, gallstone disease, and pancreatitis are discussed.