不同糖耐量肥胖儿童血清硫化氢及25-羟基维生素D3水平变化研究

目的 研究不同糖耐量肥胖儿童血清硫化氢(H₂S)及25-羟基维生素D₃[25-(OH)D₃]水平的变化及意义,为临床治疗提供参考依据。方法 2013年1月-2016年1月收集204例口服葡萄糖耐量试验(OGTT)结果异常肥胖儿童的资料,根据OGTT结果将其分为空腹血糖受损(IFG)组、糖耐量受损(IGT)组、IFG合并IGT组以及糖尿病(DM)组。选择同期46例OGTT正常的肥胖儿童为单纯肥胖组,分别通过分光光度计法检测H₂S水平,酶联免疫法检测25-(OH)D₃水平。结果 IFG组、IGT组、IFG合并IGT组以及DM组血清H₂S及25-(OH)D₃水平均低于单纯肥胖组(P＜0.05);IFG合并IGT组血清H₂S及25-(OH)D₃均低于IFG组、IGT组(P＜0.05);DM组血清H₂S及25-(OH)D₃水平均低于IFG组、IGT组及IFG合并IGT组(P＜0.05);IFG组血清H₂S低于IGT组(P＜0.05)。DM组血清H₂S及25-(OH)D₃水平均低于单纯肥胖组(P＜0.05);IFG合并IGT组血清H₂S及25-(OH)D₃水平均低于单纯肥胖组(P＜0.05)。相关性分析中,单纯肥胖组、IFG组、IGT组、IFG合并IGT组以及DM组血清H₂S及25-(OH)D₃与0 h PG、2 h PG、HBALC水平均呈显著性负相关(all P＜0.05);单纯肥胖组、IFG组、IGT组、IFG合并IGT组以及DM组血清H₂S与25-(OH)D₃水平与呈显著正相关( P＜0.05)。结论 血清H₂S及25-(OH)D₃水平与肥胖儿童糖耐量情况密切相关,其水平的明显下降可能是肥胖儿童发展为2型糖尿病的危险因素。     

血清25-(OH)D3水平与儿童社区获得性肺炎严重程度及免疫功能相关性研究

目的 分析不同严重程度肺炎的患儿25-羟维生素D₃[25-(OH)D₃]、体液免疫及细胞免疫水平,研究血清25-(OH)D₃水平与儿童社区获得性肺炎(CAP)严重程度及免疫功能的相关性。方法 收集2016年3月-2017年3月在首都儿科研究所附属儿童医院收治的175例CAP患儿作为病例组,根据病情严重程度分为重症肺炎组(n=87),轻症肺炎组(n=88)。同期采用随机数字法收集在本院保健科进行健康体检的100例健康儿童作为对照组。测定3组儿童的血清25-(OH)D₃水平,同时检测所有肺炎组患儿白细胞计数、中性粒细胞及淋巴细胞比例、血浆C反应蛋白(CRP)、降钙素原(PCT)、体液免疫(IgA、IgG、IgM),细胞免疫(CD4、CD8、CD19、CD16/56)水平,并分析血清25-(OH)D₃水平与炎性细胞及免疫功能之间的相关性。结果 重症肺炎组、轻症肺炎组和对照组血清25-(OH)D₃水平差异有统计学意义(F＝76.95,P<0.05),轻、重症肺炎组间白细胞计数、CRP、PCT、IgG比较差异有统计学意义(P均<0.05)。Pearson相关分析结果显示血清25-(OH)D₃水平与白细胞总数呈负相关(r=-0.307,P<0.05)。多因素Logistic回归分析显示,25-(OH)D₃和IgG水平是儿童重症社区获得性肺炎的高危因素。结论 血清25-(OH)D₃与IgG水平与儿童社区获得性肺炎病情严重程度关系密切,重症肺炎患儿血清25-(OH)D₃与IgG水平明显低于轻症肺炎组,检测患儿的血清25-(OH)D₃和IgG水平对于疾病的早期评估有重要的意义。     

Nutritional supplementation of hop rho iso-alpha acids, berberine, vitamin D3, and vitamin K1 produces a favorable bone biomarker profile supporting healthy bone metabolism in postmenopausal women with metabolic syndrome

Metabolic syndrome poses additional risk for postmenopausal women who are already at risk for osteoporosis. We hypothesized that a nutritional supplement containing anti-inflammatory phytochemicals and essential bone nutrients would produce a favorable bone biomarker profile in postmenopausal women with metabolic syndrome. In this 14-week, randomized trial, 51 women were instructed to consume a modified Mediterranean-style, low-glycemic-load diet and to engage in aerobic exercise. Those in the intervention arm (n = 25) additionally received 200 mg hop rho iso-alpha acids, 100 mg berberine sulfate trihydrate, 500 IU vitamin D₃, and 500 μg vitamin K₁ twice daily. Forty-five women completed the study. Baseline nutrient intake did not differ between arms. Compared with baseline, the intervention arm exhibited an approximate 25% mean decrease (P < .001) in serum osteocalcin (indicative of bone turnover), whereas the placebo arm exhibited a 21% increase (P = .003). Serum 25-hydroxyvitamin D increased 23% (P = .001) in the intervention arm and decreased 12% (P = .03) in the placebo arm. The between-arm differences for osteocalcin and 25-hydroxyvitamin D were statistically significant. Serum insulin-like growth factor I was statistically increased in both arms, but the between-arm differences were not statistically significant. Subanalysis showed that among those in the highest tertile of baseline insulin-like growth factor I, the intervention arm exhibited a significant increase in amino-terminal propeptide of type I collagen, whereas the placebo arm showed a significant decrease at 14 weeks. Treatment with rho iso-alpha acids, berberine, vitamin D₃, and vitamin K₁ produced a more favorable bone biomarker profile indicative of healthy bone metabolism in postmenopausal women with metabolic syndrome.