Objectives To investigate the relationship of serum leptin concentration with the lipids and body mass index （BMI） in patients with chronic congestive heart failure（CHF）. Methods The serum concentration of leptin ...Objectives To investigate the relationship of serum leptin concentration with the lipids and body mass index （BMI） in patients with chronic congestive heart failure（CHF）. Methods The serum concentration of leptin in 39 patients with CHF （14 in cardiac function class Ⅱ , 21 in class Ⅲ, 4 in classⅣ , NYHA） and in 46 patients with cardiac function class Ⅰ （NYHA） were assessed by radioimmunoassay. Results The serum concentration of leptin were 9.018±4.519 μg/l in CHF group （cardiac function class Ⅱ 11.492±5.649 μg/l, class Ⅲ 7.763±3.321 μg/l, class Ⅳ 6.100±2.657 μg/l）; 11.674± 6.911 μg/l in class Ⅰ group. The serum concentrations of leptin were significantly lower in CHF group, as compared with class Ⅰ group （P〈 0.05）. Moreover, the decrease of serum leptin concentration was significantly correlated with the decreased serum concentrations of total cholesterol, triglyceride, body mass index and left ventricular ejection fraction in CHF group, respectively （P 〈 0.05）. Conclusions The significance of the decrease in serum leptin in CHF patients needs further study.展开更多
Despite the extensive clinical experience with the use of metformin worldwide, no formal dose-ranging study has been conducted because the current dosing strategy of metformin was determined empirically, rather than b...Despite the extensive clinical experience with the use of metformin worldwide, no formal dose-ranging study has been conducted because the current dosing strategy of metformin was determined empirically, rather than by an understanding of its dose-response relationship in patients with type 2 diabetes. The present study was designed to evaluate the correlation between serum metformin levels and glycemic control, insulin resistance and leptin levels in females newly diagnosed with type 2 diabetes. Sixty type 2 diabetic females were recruited for the study and were allocated into 3 groups;each receiving metformin 1000, 1500 and 2000 mg/day respectively for 3 months. Blood samples withdrawn from each patient at zero time and after 3 months is used to evaluate serum levels of HbA1c, glucose, leptin and insulin, in addition, the measurement of serum level of metformin in blood after 3 months by HPLC. The results demonstrated that all the treated groups with different doses of metformin showed significant improve in all parameters;the use of increased metformin doses was only correlated with plasma leptin levels in the highest dose. In conclusion, serum metformin levels are not good predictors for correlating improvement in clinical and biochemical parameters with increasing the dose in newly diagnosed non-insulin resistant females with type 2 diabetes.展开更多
目的:研究脓毒败血症对外周血瘦素(Leptin)表达水平的影响,探讨Leptin在急性创伤炎症反应中的作用。方法:建立大鼠盲肠结扎穿孔模型,设立假手术组、单纯损伤组和脂肪乳、雌二醇、胰岛素组等干预能量代谢和神经-内分泌功能的实验组,每组1...目的:研究脓毒败血症对外周血瘦素(Leptin)表达水平的影响,探讨Leptin在急性创伤炎症反应中的作用。方法:建立大鼠盲肠结扎穿孔模型,设立假手术组、单纯损伤组和脂肪乳、雌二醇、胰岛素组等干预能量代谢和神经-内分泌功能的实验组,每组10只,并采用自建的高灵敏大鼠Leptin R IA测量损伤后12h血清Leptin浓度的变化。结果:所用Leptin R IA标准曲线形态良好,可获得各实验组血清Leptin浓度。与伤后假手术组血清Leptin水平相比,其他四组与之无显著差异,脂肪乳组有升高的趋势,而其他三组均为降低的趋势。另外,脂肪乳组显著高于单纯损伤组和雌二醇组。结论:脓毒败血症引起内源性Leptin表达不足,早期给予能量补充有望升高Leptin表达水平,而干扰下丘脑-垂体轴功能或降低能量储备则会抑制Leptin所发挥的保护效应。展开更多
目的:探究并分析白芍总苷治疗对幼年特发性关节炎患儿血清Leptin、IP-10及hs-CRP表达的影响及意义。方法:选取上海六院及本院收治的特发性关节炎(JIA)患儿80例,随机将其分为观察组和对照组,每组40例。对照组给予常规治疗,观察组在对照...目的:探究并分析白芍总苷治疗对幼年特发性关节炎患儿血清Leptin、IP-10及hs-CRP表达的影响及意义。方法:选取上海六院及本院收治的特发性关节炎(JIA)患儿80例,随机将其分为观察组和对照组,每组40例。对照组给予常规治疗,观察组在对照组基础上给予足量白芍总苷进行治疗,测定两组治疗前后各个时间血清瘦素(Leptin)、大鼠干扰素诱导蛋白-10(IP-10)及超敏c反应蛋白(hsCRP)表达水平,观察并统计测定结果。结果:两组治疗后6m Leptin含量明显低于治疗前,观察组治疗后6mLeptin水平明显低于对照组,差异均具有统计学意义(P<0.05);两组治疗后6mhs-CRP水平明显低于治疗前,观察组治疗后6 m Hs-CRP水平明显低于对照组,差异均具有统计学意义(P<0.05);两组治疗后6个月IP-10水平较治疗前明显降低,但观察组明显低于对照组,差异均具有统计学意义(P<0.05)。结论:白芍总苷能有效降低幼年特发性关节炎患儿血清Leptin、IP-10及hs-CRP表达水平,有助于机体抗炎功能的充分发挥,促进健康恢复。展开更多
Objective: To observe the effect of acupuncture on hyperleptinaemia and hyperinsulinemia for studying its underlying mechanism about anti-obesity and reducing blood lipid in obesity rats. Methods: A total of 80 SD rat...Objective: To observe the effect of acupuncture on hyperleptinaemia and hyperinsulinemia for studying its underlying mechanism about anti-obesity and reducing blood lipid in obesity rats. Methods: A total of 80 SD rats were randomized into normal control, model, acupuncture and medication groups, with 20 cases in each group. Hypothalamic obesity model was established by subcutaneous injection of 15% sodium glutamate (0.2 mL/10 g body weight), once daily and continuously for 5 days. “Zusanli” (足三里 ST 36), “Sanyinjiao”(三阴交 SP 6), “Guanyuan”(关元 CV 4) and “Zhongwan”(中脘 CV 12) were punctured and stimulated electrically (100 Hz, dense-sparse waves, and a suitable strength inducing local muscular tremor) for 15 min, once daily. In medication group, rats were fed with Sibutramine 4 mg/kg, once daily. After 4 weeks’ treatment, Lee’s index was detected, and serum leptin and insulin contents were determined by radioimmunoassay (RIA). Results: Compared with normal control group, Lee’s index, serum leptin and insulin contents of model group increased significantly (P<0.01). Comparison between acupuncture and model groups, Lee’s index and serum leptin of acupuncture group decreased significantly (P<0.01), and serum insulin level also lowered. In comparison with model group, Lee’s index, serum leptin and insulin levels of medication group also lowered. Comparison between acupuncture and medication groups showed that Lee’s index and serum leptin level of acupuncture group were significantly lower than those of the later group (P<0.01), displaying that the therapeutic effect of acupuncture is better than that of Sibutramine in lowering Lee’s index and serum leptin. No significant differences were found between acupuncture and medication groups in body weight and length and serum insulin(P>0.05). Conclusion: Acupuncture can effectively reduce Lee’s index, serum leptin and insulin contents in fasting obese rats, which may contribute to its effect in anti-obesity.展开更多
文摘Objectives To investigate the relationship of serum leptin concentration with the lipids and body mass index （BMI） in patients with chronic congestive heart failure（CHF）. Methods The serum concentration of leptin in 39 patients with CHF （14 in cardiac function class Ⅱ , 21 in class Ⅲ, 4 in classⅣ , NYHA） and in 46 patients with cardiac function class Ⅰ （NYHA） were assessed by radioimmunoassay. Results The serum concentration of leptin were 9.018±4.519 μg/l in CHF group （cardiac function class Ⅱ 11.492±5.649 μg/l, class Ⅲ 7.763±3.321 μg/l, class Ⅳ 6.100±2.657 μg/l）; 11.674± 6.911 μg/l in class Ⅰ group. The serum concentrations of leptin were significantly lower in CHF group, as compared with class Ⅰ group （P〈 0.05）. Moreover, the decrease of serum leptin concentration was significantly correlated with the decreased serum concentrations of total cholesterol, triglyceride, body mass index and left ventricular ejection fraction in CHF group, respectively （P 〈 0.05）. Conclusions The significance of the decrease in serum leptin in CHF patients needs further study.
文摘Despite the extensive clinical experience with the use of metformin worldwide, no formal dose-ranging study has been conducted because the current dosing strategy of metformin was determined empirically, rather than by an understanding of its dose-response relationship in patients with type 2 diabetes. The present study was designed to evaluate the correlation between serum metformin levels and glycemic control, insulin resistance and leptin levels in females newly diagnosed with type 2 diabetes. Sixty type 2 diabetic females were recruited for the study and were allocated into 3 groups;each receiving metformin 1000, 1500 and 2000 mg/day respectively for 3 months. Blood samples withdrawn from each patient at zero time and after 3 months is used to evaluate serum levels of HbA1c, glucose, leptin and insulin, in addition, the measurement of serum level of metformin in blood after 3 months by HPLC. The results demonstrated that all the treated groups with different doses of metformin showed significant improve in all parameters;the use of increased metformin doses was only correlated with plasma leptin levels in the highest dose. In conclusion, serum metformin levels are not good predictors for correlating improvement in clinical and biochemical parameters with increasing the dose in newly diagnosed non-insulin resistant females with type 2 diabetes.
文摘目的:研究脓毒败血症对外周血瘦素(Leptin)表达水平的影响,探讨Leptin在急性创伤炎症反应中的作用。方法:建立大鼠盲肠结扎穿孔模型,设立假手术组、单纯损伤组和脂肪乳、雌二醇、胰岛素组等干预能量代谢和神经-内分泌功能的实验组,每组10只,并采用自建的高灵敏大鼠Leptin R IA测量损伤后12h血清Leptin浓度的变化。结果:所用Leptin R IA标准曲线形态良好,可获得各实验组血清Leptin浓度。与伤后假手术组血清Leptin水平相比,其他四组与之无显著差异,脂肪乳组有升高的趋势,而其他三组均为降低的趋势。另外,脂肪乳组显著高于单纯损伤组和雌二醇组。结论:脓毒败血症引起内源性Leptin表达不足,早期给予能量补充有望升高Leptin表达水平,而干扰下丘脑-垂体轴功能或降低能量储备则会抑制Leptin所发挥的保护效应。
文摘目的:探究并分析白芍总苷治疗对幼年特发性关节炎患儿血清Leptin、IP-10及hs-CRP表达的影响及意义。方法:选取上海六院及本院收治的特发性关节炎(JIA)患儿80例,随机将其分为观察组和对照组,每组40例。对照组给予常规治疗,观察组在对照组基础上给予足量白芍总苷进行治疗,测定两组治疗前后各个时间血清瘦素(Leptin)、大鼠干扰素诱导蛋白-10(IP-10)及超敏c反应蛋白(hsCRP)表达水平,观察并统计测定结果。结果:两组治疗后6m Leptin含量明显低于治疗前,观察组治疗后6mLeptin水平明显低于对照组,差异均具有统计学意义(P<0.05);两组治疗后6mhs-CRP水平明显低于治疗前,观察组治疗后6 m Hs-CRP水平明显低于对照组,差异均具有统计学意义(P<0.05);两组治疗后6个月IP-10水平较治疗前明显降低,但观察组明显低于对照组,差异均具有统计学意义(P<0.05)。结论:白芍总苷能有效降低幼年特发性关节炎患儿血清Leptin、IP-10及hs-CRP表达水平,有助于机体抗炎功能的充分发挥,促进健康恢复。
文摘Objective: To observe the effect of acupuncture on hyperleptinaemia and hyperinsulinemia for studying its underlying mechanism about anti-obesity and reducing blood lipid in obesity rats. Methods: A total of 80 SD rats were randomized into normal control, model, acupuncture and medication groups, with 20 cases in each group. Hypothalamic obesity model was established by subcutaneous injection of 15% sodium glutamate (0.2 mL/10 g body weight), once daily and continuously for 5 days. “Zusanli” (足三里 ST 36), “Sanyinjiao”(三阴交 SP 6), “Guanyuan”(关元 CV 4) and “Zhongwan”(中脘 CV 12) were punctured and stimulated electrically (100 Hz, dense-sparse waves, and a suitable strength inducing local muscular tremor) for 15 min, once daily. In medication group, rats were fed with Sibutramine 4 mg/kg, once daily. After 4 weeks’ treatment, Lee’s index was detected, and serum leptin and insulin contents were determined by radioimmunoassay (RIA). Results: Compared with normal control group, Lee’s index, serum leptin and insulin contents of model group increased significantly (P<0.01). Comparison between acupuncture and model groups, Lee’s index and serum leptin of acupuncture group decreased significantly (P<0.01), and serum insulin level also lowered. In comparison with model group, Lee’s index, serum leptin and insulin levels of medication group also lowered. Comparison between acupuncture and medication groups showed that Lee’s index and serum leptin level of acupuncture group were significantly lower than those of the later group (P<0.01), displaying that the therapeutic effect of acupuncture is better than that of Sibutramine in lowering Lee’s index and serum leptin. No significant differences were found between acupuncture and medication groups in body weight and length and serum insulin(P>0.05). Conclusion: Acupuncture can effectively reduce Lee’s index, serum leptin and insulin contents in fasting obese rats, which may contribute to its effect in anti-obesity.
