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Objective To investigate the relationship between sex hormone binding globulin (SHBG) in serum and diabetic retinopathy (DR) in patients with type 2 diabetic mellitus (T2DM).Methods A total of 160 hospitalized people with T2DM was enrolled into the study.The patients were divided into two groups with or without merged DR.Clinical and laboratorial data were collected, and the correlation was analyzed between sex hormone binding globulin and diabetic retinopathy.Results (1) Compared to the group without DR, patients in T2DM with DR had significant lower SHBG concentration, triglyceride (TG) and total cholesterol (TC) concentration were increased significantly (P ＜ 0.01).(2) The level of SHBG was associated with waist circumference, body weight, fasting blood glucose, and glycosylated hemoglobin (P ＜ 0.05).(3) While the level of SHBG was significantly increased from Quartile 1 to Quartile4, the prevalence of DR was also significantly decreased (A:70％, B:51.2％,C:40.5％, D:29.7％) (P ＜ 0.01).(4) Logistic regressing analysis shows that with the decrease of SHBG level, the increase of triglyceride levels, the risk of DR was significantly increased (SHBG:OR:0.616,95％ CI:0.447-0.850,P ＜ 0.01;TG:OR:1.323,95％ CI:1.025-1.707,P＜0.05).Conclusions With the decrease of SHBG, the prevalence of DR is significantly increased, lower SHBG may be one of the hazards of T2DM patients with DR.
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Objective To investigate the relationship between with or without non?alcoholic fatty liver disease(NAFLD) and diabetic retinopathy(DR) in type 2 diabetes mellitus(T2DM)?Methods Clinical and laboratorial data of 517 cases T2DM hospitalized patients were collected,and the patients were divided into two groups according to if the NAFLD was complicated or not?Group A was T2DM with NAFLD and group B was T2DM without NAFLD?The general information and the laboratorial checking results were Compared, then various index were used as the independent variable, DR was used as the dependent variable for Logistic regression analysis?Results (1)In the 517 cases of T2DM patients,the incorporative rate of the NAFLD was 65?7%(349/517)?(2)Compared with group B,the levels of body mass index(BMI),insulin resistance index (HOMA?IR),glutamyltransferase(GGT),alanine aminotransferase(ALT),aspartate aminotransferase(AST), triglyceride(TG),total cholesterol(TC),low?density lipoprotein cholesterol(LDL?C) and uric acid(UA) for group A were significantly increased, while the high?density lipoprotein cholesterol ( HDL?C ) level was significantly decreased?All the differences were statistically significant( P<0?05)?( 3) Logistic analysis showed that the duration of the extension,hypertension,the increasing level of NAFLD,LDL?C were the risk factors of DR?Even though excluded the influence of duration,high blood pressure and LDL?C level,NAFLD was still the risk factor for T2DM complicated by the DR( OR=2?176,95% CI ( 1?354,3?199) )?Conclusion NAFLD and DR are closely related, so early diagnosis and intervention of NAFLD may prevent the occurrence and development of DR.
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Objective To judge the effect by understanding the change of the blood related indexes before and after the applica-tion of lamivudine combined with silibinin treatment for treating E antigen positive chronic hepatitis B to provide the basis for the individualized therapy.Methods 226 cases of E antigen positive chronic hepatitis B were selected and divided into the mild group (55 cases),moderate group (94 cases)and severe group(77 cases)according to the degree of liver function injury.The 3 groups were given oral lamivudine 100 mg once daily and oral silybinin 70mg,3 times a day.The course of treatment was 6 months;the re-lated blood indexes before and after treatment were analyzed.Results After 6 months of treatment,the recovery rate of ALT,E an-tigen negative conversion rate and HBV-DNA negative conversion rate in the mild group and the moderate group were improved in different degrees,and those in the severe group were significantly increased(P <0.05).Conclusion Lamivudine combined with sili-binin treatment can inhibit the replication of HBV-DNA more effectively,promote the recovery rate of serum ALT significantly,im-prove the E antigen negative conversion rate,especially for the patients with severe liver function injury;which improve the curative effect in the treatment of chronic hepatitis B in some extent.
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Objective To discuss the relationship between TCM syndromes and peritoneal fluid cytokine IL-6, IL-8 and TNF-α of endometriosis infertility patients, and provide thoughts for clinical treatment. Methods Totally 105 patients of endometriosis infertility were differentiated to six syndrome groups, including kidney deficiency and blood stasis, qi stagnation and blood stasis, heat stagnation and blood stasis, cold congelation and blood stasis, qi deficiency and blood stasis, phlegm-dampness stagnation. Thirty patients of non-endometriosis infertility were selected as control group. Enzyme-linked immunosorbent assay was used to detect cytokine levels of IL-6, IL-8 and TNF-α. Results In 105 cases of EM infertility, 35 cases (33.33%) were syndrome of kidney deficiency and blood stasis, 22 cases (20.95%) were syndrome of cold congelation and blood stasis, 18 cases (17.14%) were syndrome of qi stagnation and blood stasis, 10 cases (9.52%) were syndrome of heat stagnation and blood stasis, 11 cases (10.48%) were syndrome of qi deficiency and blood stasis, 9 cases (8.57%) were phlegm-dampness stagnation syndrome. The levels of IL-6, IL-8 and TNF-αin each syndrome group of EM infertility were higher than control group (P<0.01). IL-6 level in kidney deficiency and blood stasis group were higher than other syndrome groups (P<0.05). The levels of IL-8 and TNF-α in kidney deficiency and blood stasis group, and heat stagnation and blood stasis group were higher than other syndrome groups (P<0.05). IL-8 in kidney deficiency and blood stasis group was higher than that in heat stagnation and blood stasis group (P<0.05). Conclusion TCM syndromes in patients with endometriosis infertility have some relevance with peritoneal fluid cytokine levels of IL-6, IL-8, TNF-α, which may guide clinical understanding and treatment of endometriosis infertility.
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Objective To observe the change of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene expression during 3T3-L1 adipocyte differentiation as well as other reference gene expressions.Methods The mRNA expressions of several common reference genes were detected by real time-PCR on day 0,1,3,5,and 7 of 3T3-L1 adipocyte differentiation.Western blot was used to confirm the protein expressions of three common reference genes.Results (1) GAPDH and transferrin receptor(TFRC) mRNA expressions were significantly increased during adipocyte differentiation.GAPDH mRNA level was increased by 5.7,7.6,22.0,and 24.5 folds on day 1,3,5,and 7 after induction of adipocyte differentiation,but no apparent changes of β-actin,α-tubulin,peptidylprolyl isomerase A (PIPA),and 18S mRNA expressions were detected.The expression changes of key transcript factors for adipocyte differentiation such as PPARγ2,C/EBPα,and C/EBPβ were under-estimated by real time-PCR if GAPDH was chosen as the reference gene.Western blotting results showed that the GAPDH protein level increased gradually during adipocyte differentiation,especially on day 5 and 7 after adipocyte differentiation.There were no obvious changes of β-actin and α-tubulin protein expressions.(2) Berberine significantly inhibited mRNA and protein expressions of GAPDH in the process of adipocyte differentiation.GAPDH mRNA levels were reduced by 68.1％ and 66.3％ on day 5 and 7 after induction of adipocyte differentiation,but with no significant change in other reference genes.Conclusion It is not suitable for GAPDH to be used as an endogenous reference gene during 3T3-L1 adipocyte differentiation.
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OBJECTIVE@#To investigate the ING1 gene mutation status in human laryngeal squamous cell carcinoma(LSCC), and the association of p33(ING1b) protein expression with p53 protein expression.@*METHOD@#DNA of LSCC tissue was extracted, and nucleotide of the second exon was amplified and sequenced to determine the chromosome status. The p23(ING1b) and p53 protein expression were detected by immunohistochemistry and the association between them were analyzed.@*RESULT@#No mutation was detected in ING1 gene, but a single polymorphism from GGG to AGG at codon 170 of ING1 gene was found in 2 of the 25 LSCC tissues. The immunohistochemical analysis showed that 4 had positive p33(ING1b) expression. No association was found between p33(ING1b) expression and LSCC clinical features, or between p53 and clinical features. However, significant difference was found between p33(ING1b) and p53 expression. p33(ING1b) tended to be negative in p53 expression positive tissue.@*CONCLUSION@#ING1 gene mutation appears rare in LSCC. In normal physical condition, p33(ING1b) may play a synergistic effect with p53 protein.
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Female , Humans , Male , Middle Aged , Carcinoma, Squamous Cell , Genetics , Metabolism , Pathology , Genes, Regulator , Inhibitor of Growth Protein 1 , Intracellular Signaling Peptides and Proteins , Genetics , Laryngeal Neoplasms , Genetics , Metabolism , Pathology , Mutation , Nuclear Proteins , Genetics , Tumor Suppressor Protein p53 , Metabolism , Tumor Suppressor Proteins , GeneticsABSTRACT
PPARγ2 gene C1431T polymorphism was assayed by PCR-RFLP in 200 polycystic ovary syndrome( PCOS)patients and 150 normal subjects. Serum adiponectin and leptin levels were determined by ELISA method. Polymorphism of the site might be associated with serum leptin and adiponectin concentrations and thiazolidinedione treatment in women with PCOS ( P<0.05 or P<0.01).
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Isolated freshly rat islets were transferred to 24-well plates and incubated with different concentrations of glucose or resveratrol for 1 or 24 h.The results showed that resveratrol dose-dependently inhibited glucose-stimulated insulin secretion from isolated rat islets after 1 h incubation,with 10%,35%,and 80% (P<0.05 or P<0.01) decrease at the concentrations of 1,I0,and 100 μmol/L.10 μmol/L resveratrol decreased the intracellular calcium concentration by 60% (P<0.05).After incubation for 24 h,resveratrol increased palmitatesuppressed insulin secretion to 75% (P<0.01) of control.These results suggest that resveratrol acutely inhibits insulin secretion from primary pancreatic islet via regulating intracellular calcium ion concentration,and in the long run resveratrol may protect β-cells from lipotoxicity.
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The effect of troglitazone on glucose-stimulated insulin secretion (GSIS) in pancreatic β-cells and its mechanism were investigated.10 μmol/L troglitazone had no effect on basal insulin secretion,but significantly decreased GSIS and stimulated AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC) phosphorylations (all P<0.01).These reactions were completely reversed by AMPK inhibitor compound C,suggesting that the troglitazone acutely inhibits insulin secretion via stimulating AMPK activity in beta cells.
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Objective To study the role of pancreatic renin-angiotensin system (RAS) on insulin secretion, proliferation, apoptosis, oxidative stress, and fibrosis of β-cells. Methods The effect of angiotensin Ⅱ on βTC3 cells was studied and the role and mechanism of AT1 R were analyzed with RNAi technology. The expression of AT1 R was measured by Western Blotting. The change of intracellular calcium was detected by microfluorimetry with Furo3-1oaded cells. Peroxide-sensitive fluorescent probe DCFH-DA was used to analyze intracellular ROS by flow cytometry. Real-time PCR was performed to evaluate mRNA levels related to proliferation and fibrosis in βTC3 cells. Apoptosis was detected by flow cytometry and Tunel method. Results Insulin secretion was significantly increased up to four fold and the level of intracellular calcium was sharply increased in response to high glucose in βTC3 cells. Angiotensin Ⅱ has no direct effect on insulin secretion in βTC3 cells and its role in secretion was associated with the role in proliferation. Oxidative stress in βTC3 cells caused by angiotensin Ⅱ may be partially mediated through AT1R, protein kinase C and NAD(P) H. With the decrease of AT1R expression by RNAi technology, apoptosis, and fibrosis of βTC3 cells induced by angiotensin Ⅱ might be ameliorated.Conclusions By means of AT1R, angiotensin Ⅱ plays an important role in insulin secretion, proliferation,apoptosis, oxidative stress and fibrosis in β-cells.
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Objective To examine the impact of adolescent obesity on circulating visfatin levels, and to analyze the relationship between visfatin and anthropometric indices, insulin sensitivity, and blood lipids in Chinese adolescents (11-18 years). Methods Serum visfatin, adiponectin and lepfin were measured by RIA in 76 nonobese and 72 obese adolescents, and their total cholesterol, triglyceride, high-density lipoprotein-cholesterol (HDL-C) and low-density hpoprotein cholesterol were analyzed with enzymatic methods. OGTT was performed according to the World Health Organization standard procedure in obese adolescents, and homeostasis model assessment of insulin resistance (HOMA-IR), insulin sensitivity index (ISI) and early insulin secretion index (EISI) were calculated. Results The serum visfatin level was significantly higher in obese subjects than in non-obese subjects [(37.65±18.28 vs 29.35±12.10) μg/L, P<0.01]. There were no significant correlations between the serum visfatin concentration and the anthropometrie indices or the lipid parameters in the non-obese group. However, visfatin levels were negatively correlated with age, Tanner stage and EISI, and positively correlated with HDL-C in the obese adolescents. These relationships, except that for EISI and Tanner stage,remained significant (P<0.05) after adjustment for age, gender, and body mass index. Moreover, unlike adiponectin and leptin, visfatin concentration was not correlated with testosterone in non-obese and obese boys.Conclusion Visfatin levels decrease with age and may be related to the HDL-C metabohsm in Chinese obese adolescents.
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Objective To investigate the changes of serum N-terminal-pro-B-type natriuretic peptide (NT-proBNP) concentration in patients with Graves' disease (GD) and its clinical significance. Methods Two hundred and sixty-nine patients with GD were enrolled in this study. Serum concentrations of thyroid hormones,TRAb, and NT-proBNP were measured. Results Serum NT-proBNP levels were positively associated with FT3(r=0.260, P<0.01), FT4(r=0.297,P<0.01) and heart rate (r=0.251, P<0.05) independent of age,sex and body mass index (BMI). The difference of serum NT-proBNP concentrations between newly-onset and treated patients existed (P<0.01) after the adjustment for thyroid hormone levels, age, sex and BMI. Serum FT4level exerted a significant impact on NT-proBNP level (P <0.01). Serum NT-proBNP increased even in patients with controlled thyroid function. Conclusion Serum NT-proBNP level in patients with GD increases with elevation of FT4 independent of sex, age and BMI. The measurement of serum NT-proBNP concentration appears to be helpful to monitor the alteration of vascular stiffness and fluid volume in GD patients, and may provide useful evidence for early intervention of cardiovascular disease induced by hyperthyroidism.
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Betacellulin (BTC) is one of "islets regeneration factors" which received more and more attention these years. BTCe is the C-terminal 50-residue region of mature BTC protein and can bind with erbB-1?erbB-4 receptor. It has the same mitogenic activity on cells as the whole section. BTC and BTCe can improve the level of glucose-stimulated insulin secretion (GSIS) during islets culture in vitro though they had no effect on the acute insulin secretion. BTCe also effectively ameliorated the hyperglycemia of STZ-induced diabetic rats by a single plasmid injection into muscle of rats. It is supposed that BTCe promote the proliferation of PDX-1 positive cells or repair some signal transduction pathway. Perhaps the latter is more important.
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Objective To observe the effect of berberine on glucose transport in 3T3-L1 adipocytes and to investigate its mechanism. Methods The glucose consumption of the cells was determined by the glucose oxidase method. The glucose transportation rate of the cells was assayed by the uptake of 2-deoxy-〔 3H〕-D-glucose. Protein kinase B (Akt) activity was detected by immunoprecipitation and Western blot. The gene expression of c-Cbl-associated protein (CAP) was detected by Northern blot. Results 0.1～200 ?mol/L berberine significantly increased glucose consumption in 3T3-L1 adipocytes with a dose-dependent effect, which was independent of insulin. The glucose transportation was significantly increased in adipocytes incubated with 0.1～10 ?mol/L berberine; the action began at 2 h and reached a peak value at 12 h. The results of immunoprecipitation and Western blot showed that berberine did not enhance Akt activity. The result of Northern blot indicated that berberine significantly decreased CAP mRNA expression. Conclusion Adipocytes are the important target cells of berberine. Berberine significantly increases glucose transportation and consumption in adipocytes, the action appeares to be independent of insulin signal pathway.
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Objective To explore the possible correlation between serum highly sensitive C reactive protein (hs CRP) and blood glucose, insulin, lipids ,insulin sensitivity index (SI),acute insulin response(AIR), and adiponectin in subjects with impaired glucose tolerance (IGT) or newly diagnosed type 2 diabetes mellitus(DM). Methods SI and AIR were assessed by the reduced sample number of Bergman′s minimal model method by intravenous glucose tolerance test in subjects. Meanwhile body mass index (BMI), waist hip ratio (WHR), the serum lipid profile, hs CRP, adiponectin levels were measured. Results Compared with normal control (NC) group[SI(6.6?2.4) 10 -4 (min?mU/L) -1 ,adiponectin7.77(6.35 10.70 mg/L),hs CRP0.40(0.21 1.67mg/L)], the SI and serum adiponectin in IGT group [(1.5?1.1) 10 -4 (min?mU/L) -1 , 4.29(3.59 6.22 mg/L) respectively] and type 2 DM group [(1.5?1.0)?10 -4 (min?mU/L) -1 , 3.46(2.37 4.72 mg/L) respectively] were significantly decreased (all P
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The construction of campus culture is all-around systemic project with quite abundant content.However,medical morality is indispensable in the construction of campus culture.This article concretely analyzes status of medical morality,expatiates on effect of medical morality in the construction of campus culture.Further,a discussion on the approach of medical morality which combines medical morality and the construction of campus culture is given.
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Two compounds were isolated from the hard coral Pavona frondifera Lamarck collected from the South China Sea by chromatographied on gel colum and recrystallization. Their structures were determined by UV,IR,MS,1HNMR and 13CNMR data. It first reported about the chemical compounds of the hard coral Pavona frondifera Lamarck.
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Three known compounds have been isolated from the marine sponge Gel-liodes spinosella in the South China Sea. The crude ethanol extract was partitioned between ethyl acetate and water, and then between w-butanol and water. The butanol fraction was chromatographed on silica gel column to obtain thymidine(1l) ,phenylacetic acid(2)and L-(-)-3-phenylanine(3). Their structures were determined by UV,IR,1HNMR,and 13CNMR data.
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Objective: To confirm whether Biejiajian Pill has the action of promoting blood circulation to remove blood stasis, softening the hard lumps and dispelling the nodes. Methods: The blood stasis model, anti tumor model, the model of collagen and urinary hydroxyproline evacuating from fibrous liver of rat and the other pharmacological models were prepared to confirm the action of the pill. Results: (1) This pill has the absorption of erythrocyte and blood clot of itself. (2) After the pill being given to the rats with cirrhosis, the hepatitisfibrils decreased, the excretion of urinary hydroxyproline increased and the content of collagen of the therapeutics group was less than the control group. All of those suggested that this drug has the action of promoting the degradation of the collagen fiber and reabsorption of the hepatitis collagen. (3) This pill can apparently inhibit the proliferation of S 180 . Conclusion: The drug has the action of promoting blood circulation to remove blood stasis, softening the hard lumps and dispel the nodes.
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Objective To observe expression of resistin gene in adipose tissue of SD rats fed with high-fat diet and its correlation to insulin resistance, diabetes mellitus and leptin. Methods Using RT-PCR to mRNA from adipose tissue, the products were obtained, purified, constructed and squenced. Once its squence was verified, semi-quantitative RT-PCR and Northern Blot were employed to study its expressions in adipose tissues of rats with different diets. Oral glucose tolerance test and insulin release test were performed in 2 groups of rats. Results (1) The resistin gene was successfully constructed and sequenced, which was in accordance with the data of genbank. (2) Compared with the control, the expression of resistin in adipose tissue of high-fat diet rats was significantly enhanced, and blood glucose, serum insulin and leptin levels were also elevated in high-fat diet rats (P