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Hong-min Zhang

Publications and source records attributed to Hong-min Zhang.

7 recordsLinked to original sources
PubMed2006

[Effect of soy isoflavone on gene expression of leptin and insulin sensibility in insulin-resistant rats].

OBJECTIVE: To explore the effects of soy isoflavone (SIF) on gene expression of leptin and insulin sensibility in insulin-resistant (IR) rats induced by high-fat, and to reveal the mechanisms of SIF in ameliorating insulin sensibility. METHODS: IR rats were randomly divided into four groups based on their insulin-resistant indexes (IRI): one model control group and three SIF groups that were gavaged with water solutions with SIF at doses of 0 mg/kg, 50 mg/kg, 150 mg/kg, and 450 mg/kg, respectively. After one month, fasting glucose, fasting insulin, leptin in serum, and leptin mRNA in the perirenal adipocyte were detected by enzymic method, radioimmunoassay, enzyme linked immunosorbent assay, and real time quantitative RT-PCR, respectively. RESULTS: The model control group was used to compare against the other groups: (1) Insulin and IRI were lower in the 150 mg/kg and 450 mg/kg groups; (2) In the 450 mg/kg group, body weight and leptin mRNA expression were lower, serum leptin content was higher. CONCLUSION: These results indicate that soy isoflavone might decrease body weight of rats and leptin mRNA, increase serum leptin level, and ameliorate leptin and insulin sensitivities.

Animals↗
PubMed2006

[Effects of soy isoflavone on low-grade inflammation in obese rats].

OBJECTIVE: To explore the effects of soy isoflavone (SIF) on low-grade inflammation in obese rats induced by high-fat diet, and to elucidate mechanisms of SIF in improving insulin sensitivity. METHODS: Obese rats were randomly divided into 4 groups: One model control group and 3 SIF groups that were given water solutions with SIF at 0 mg/(kg x d), 50 mg/(kg x d), 150 mg/(kg x d), and 450 mg/(kg x d), respectively. After one month, fasting glucose, fasting insulin, interleukin-6, tumor necrosis factor-alpha, C-reactive protein, resistin, and adiponectin in serum were detected by enzymic method, radioimmunoassay, and enzyme linked immunosorbent assay, respectively. RESULTS: In the 150 mg/(kg x d) group and 450 mg/(kg x d) group, fasting body-weights, viscera fatty deposition, and contents of insulin, interleukin-6, and tumor necrosis factor-alpha in serum were significantly lower; serum adiponectin levels were significantly higher; and serum resistin levels were significantly lower in the 450 mg/(kg d) group than those of the model control group. There was no difference in serum C-reactive protein levels among the 3 SIF groups. CONCLUSION: Soy isoflavone may improve the insulin sensitivity by decreasing viscera fatty deposition and adjusting low-grade inflammatory molecules derived from white adipose tissues.

Animals↗
PubMed2006

[Effects of soy isoflavone on gene expression of resistin in insulin-resistance rats].

OBJECTIVE: To assess the effects of soy isoflavone (SIF) on improving insulin reistance (IR) status in IR rats induced by high-fat and high-sugar diet and explore the possible mechanisms. METHODS: IR rats were randomly divided into four groups according to their insulin resistance indices (IRI). The rats in one model control group and three SIF groups were fed via gavage with water solutions containing SIF at doses of 0 mg/ kg x bw, 50 mg/kg x bw, 150 mg/kg x bw, and 450 mg/kg x bw, respectively. After one month, fasting glucose, fasting insulin, resistin in serum, and resistin mRNA in adipocyte around kidney were detected by enzymologic method, radioimmunoassay, enzyme linked immunosorbent assay, and real time RT-PCR, respectively. RESULTS: Comparison between the model control group and the other groups revealed that serum resistin and resistin mRNA expression levels were lower in the 450 mg/kg x bw group, that insulin and IRI levels were lower in the 150 mg/ kg x bw group and 450 mg/kg x bw group, and that no differences in plasma glucose levels existed among the 4 groups. A positive correlation between IRI and serum resistin level (r = 0.355, P < 0.05) was observed. CONCLUSION: These results suggest that soy isoflavone may down-regulate resistin mRNA expression, decrease serum resistin level and enhance insulin sensitivity.

Animals↗
PubMed2006

[Mechanism of Shenqi compound recipe anti-earlier diabetic artherosclerosis in GK rats].

OBJECTIVE: To explore the mechanism of Shenqi compound recipe (SQCR) anti-earlier diabetic artherosclerosis in GK rats. METHOD: Four-month specefic pathogen free (SPF) GK rats were divided randomly according to blood glucose level into four groups: model group (5 mL x kg(-1) x d(-1) sterile water), ramipril group (positive control, 1 mg x kg(-1) x d(-1)), SQCR low dosage (0.72 g x kg(-1) x d(-1)) and SQCR high dosage group (2.88 g x kg(-1) x d(-1)) and Wistar rats as normal control group(5 mL x kg(-1) x d(-1) sterile water). GK rats took high-fat diet freely and meanwile were injected N-omega-nitro-L-arginine methyl ester (L-N-AME) intra-peritoneally with the dose of 10 mg x kg(-1) x d(-1) in order to induce earlier diabetic artherosclerosis, while normal control group took regular diet and were injected normal saline intra-peritoneally. In the experiment periods, each group was administrated correspondent substance respectively for 32 d. At the end, sampling blood by abdominal aorta and picking aorta on ice. Determined monocyte chemoattractant protein-1 (MCP-1) concentration by ELISA, messenger ribonucleic acid (mRNA) expression of MCP-1 and peroxisome proliferator-activated receptor gamma (PPARgamma) in aorta by reverse transcriptase PCR (RT-PCR). RESULT: Concentrations of MCP-1 in serum in SQCR low and high dosage groups and the mRNA expression of MCP-1 in SQCR high dosage group were all decreased significantly compared with model group (P < 0.05). The mRNA expression of PPARgamma in SQCR low and high dosage groups all increased compared with model group (P < 0.05 or P < 0.01). CONCLUSION: Inhibiting the mRNA and protein expression of MCP-1 and upregulating the mRNA expression of PPARgamma in aorta might be contribute to SQCR anti-earlier diabetic artherosclerosis in GK rats partly.

Animals↗
PubMed2005

[Effects of bushen huoxue recipe on proliferation, differentiation and mineralization of osteoblasts in rats].

OBJECTIVE: To observe the effects of bushen huoxue recipe (BHR) on cell proliferation, differentiation, maturation and mineralization in osteoblasts of rats cultured in vitro. METHODS: Osteoblasts from cranium of newborn SD rats were cultured by collagenase method. MTT, PNPP and ARS were used to observe the proliferation, activity of alkaline phosphatase (ALP) and the formation of mineral node of cultured osteoblasts effected by different concentrations of BHR at different time points (24, 48, 72 hrs after medication). RESULTS: Different concentrations of BHR could enhance the cell proliferation rate and ALP activity, the effects of BHR in high and moderate concentration were more significant in enhancing the cell proliferation rate (P < 0.01). And the number of mineral node of cultured osteoblasts treated by high and moderate concentration BHR was much more than that of the untreated osteoblasts (P < 0.01). CONCLUSION: BHR could promote the proliferation, differentiation, and mineralization of the osteoblasts.

Alkaline Phosphatase↗