Antihyperglycemic activity of the aqueous extract of Urtica dioica

When administered 30 min before glucose loading, the aqueous extract of Urtica dioica (nettle) (250 mg/kg) showed a strong glucose lowering effect. The decrease of glycemia has reached to 33+/-3.4% of the control value 1 h after glucose loading. This effect was persistent during 3 h. In contrast, nettle did not show hypoglycemic effect in alloxan-induced diabetic rats. The amount of glucose absorbed in a segment jejunum in situ was 8.05+/-0.68 mg in presence of nettle extract vs. 11.11+/-0.75 mg in control rats during 2 h (P<0.05). The results indicate that nettle has a significant antihyperglycemic effect in OGTT model. This effect may be caused in part by the reduction of intestinal glucose absorption. LD(50) is 3.5 g/kg (i.p.).     

洋葱对草鱼细菌性烂鳃病的治疗效果试验

[目的]探讨洋葱对草鱼细菌性烂鳃病的治疗效果。[方法]在试验室内、人工控制条件下,通过对患典型细菌性烂鳃病的草鱼采取口服和泼洒相结合的方法,治疗1个疗程疗程。[结果]洋葱不同用药浓度对患病草鱼治愈率不同,其中口服法以药饵在饲料添加为1.0%~2.0%,遍洒法以药物浓度为2.0~5.0 g/m3时效果较好,治愈率可达70%~90%。[结论]表明洋葱对草鱼细菌性烂鳃病有治疗效果,可作为治疗草鱼细菌性烂鳃病的药物。     

Involvement of glucagon-like peptide 1 in the glucose homeostasis regulation in obese and pituitary-dependent hyperadrenocorticism affected dogs

The incretin glucagon-like peptide 1 (GLP-1) enhances insulin secretion. The aim of this study was to assess GLP-1, glucose and insulin concentrations, Homeostatic Model Assessment (HOMA_{insulin sensitivity} and HOMA_{β-cell function}) in dogs with pituitary-dependent hyperadrenocorticism (PDH), and compare these values with those in normal and obese dogs. The Oral Glucose Tolerance Test was performed and the glucose, GLP-1 and insulin concentrations were evaluated at baseline, and after 15, 30, 60 and 120 minutes. Both basal concentration and those corresponding to the subsequent times, for glucose, GLP-1 and insulin, were statistically elevated in PDH dogs compared to the other groups. Insulin followed a similar behaviour together with variations of GLP-1. HOMA_{insulin sensitivity} was statistically decreased and HOMA_{β-cell function} increased in dogs with PDH. The higher concentrations of GLP-1 in PDH could play an important role in the impairment of pancreatic β-cells thus predisposing to diabetes mellitus.     

枣仁蜂乳口服液之改善睡眠功能试验研究

以低、中、高3种剂量的枣仁蜂乳口服液给小鼠灌胃,考察其改善睡眠的保健作用。结果表明:枣仁蜂乳口服液能大幅缩短巴比妥钠诱导的小鼠睡眠潜伏期、明显延长阈剂量戊巴比妥钠诱导的小鼠睡眠时间、显著增加阈下剂量戊巴比妥钠诱导的小鼠睡眠发生率(P<0.05或0.01),因而具有改善睡眠的保健功能。枣仁蜂乳口服液采用酸枣仁和蜂乳协同作用,不但可以加强深度睡眠从而提高睡眠质量,而且几乎没有安全风险且服用方便,无疑将成为一种理想的新型助眠保健食品。     

仔泻康口服液的质量标准研究

为了研究仔泻康口服液质量标准,以便控制产品质量,采用薄层色谱法(TLC)对制剂中黄芪、黄芩、黄连、白头翁进行定性鉴别;用高效液相色谱(HPLC)法对制剂中黄芩苷、盐酸小檗碱进行含量测定。结果 TLC鉴别分离度好,简单、灵敏、专属性强。黄芩苷线性范围在0.12～0.75μg(R2=0.9975),平均回收率为97%,RSD=1. 46%(n=6);盐酸小檗碱线性范围在0. 125～0. 75μg(R2=0.9929),平均回收率为93.33%,RSD为2.21%(n=6)。对黄芪、黄芩、黄连的定性鉴别及黄芩苷、盐酸小檗碱的含量测定,方法简单、准确、可靠,所建的标准可用于仔泻康口服液的质量控制。