Pioglitazone treatment significantly improved the euglycemic clamp-determined insulin sensitivity (IS), raised adiponectin level, decreased TNF-α and FFA levels in rats with obese and hyperglycemia.

Objective To study the effects of supra-physiologic glucose on the expression of PDX-1 and insulin secretion. Methods Islet cells isolated from SD rats were incubated in medium containing 5.6 mmol/L or 33 mmol/L glucose respectively for 3 days. Basic and glucose-induced insulin levels in supernate and in islet cells were detected. The PDX-1 mRNA and protein were detected. Results (1) Islet cells exposed to 33 mmol/L vs 5.6 mmol/L glucose for 3 days showed significant decrease in the basic and glucose-induced insulin release, and in cell insulin content and PDX-1 protein. (2) Prolonging incubation of islet cells in 33 mmol/L glucose aggravated the inhibitive effect on PDX-1 expression and insulin secretion. (3)Recovery to normal concentration of glucose in 3 days could partly improve PDX-1 expression and insulin secretion. Conclusions Inhibition of PDX-1 is one of the mechanism of glucotoxicity, and recovery to normal concentration of glucose in 3 days can partly improve PDX-1 expression and insulin secretion.

Objective To investigate the relationship of insulin resistance (IR) and hypertension. Methods Eight hundred seventy two participants were divided into 6 groups by systolic blood pressure (SBP) or diastolic blood pressure (DBP). SBP1:

Objective To study the effect of anisodamine (654-2) combined with exogenous pulmonary surfactant (PS) on tumor necrosis (TNF- ?) ,structure of lung tissue changes during pig's lung ischemic-reperfusion injury. Methods 24 pigs ,approximately 45-day-old, were randomly divided into four groups: a control group,a 654-2 group,a PS group and a 654-2 plus PS group. The TNF-? concentration of every lung was analysed with ELISA methods at the point of pre-clamping right pulmonary aortery,post-clamping 60',90'(opening),post-unclamping 60',90',120'.Finally ,we examined the pathologic changes of the lungs. Results After clamping right pulmonary artery , TNF-? concentrations in every experimental groups were significantly lower than that of the control group (all P

0.05), but insulin sensitivity was actually improved (P

The level of serum fibroblast growth factor-21 (FGF-21) in patients with type 2 diabetes mellitus complicated with non-alcoholic fatty liver disease (NAFLD) was determined by ELISA.The results showed that serum FGF-21 level in these patients was higher than that in type 2 diabetic patients [(266.55 ± 21.24 vs 220.32 ± 22.68) ng/L,P＜ 0.01].Serum FGF-21 levels in both groups were significantly higher than that in normal control group [(173.52 ± 16.18) ng/L,P＜0.01].Serum FGF-21 level was positively correlated with waist circumference,blood glucose,and triglyceride.FGF-21 may contribute to the development of NAFLD in the patients with type 2 diabetes mellitus.

Objective To analyse CT and DSA appearances of intrahepatic cholangiocarcinoma,and to improve understanding of intrahepatic cholangiocarcinoma.Methods Plain and enhanced CT scanning were performed in 17 patients with intrahepatic cholangiocarcinoma pathollogically proved,6 patients(6/17) performed dynamic CT scanning,5 performed DSA examinations.Results Pre-contrast CT scanning was a single low density lesions in all patients,post-contrast CT scanning showed slightly inhomogeneous enhancement in 17 patients,3 patients(3/17) showed low density unenhancement area with margin enhancement,2 patients delayed enhancement;Intrahepatic billary delatation was found in 15 patients and was within the lesion in 10 patients(10/15);On DSA,5 patients showed enlaragement increasment and rigidity of supplying arteries and tumour stain.Conclusion CT scanning and DSA were important,investigative methods for intrahepatic cholangiocarcinoma,the billary dilatations with slightly inhomogeneous enhancement lesions is important sign in diagnosising intrahepatic cholangiocarcinoma.

Objective To analyze MSCT characteristics of septic pulmonary embolism (SPE) caused by intravenous drug and to improve diagnosis. Methods The MSCT findings of 16 patients of SPE induced by intravenous drug were analyzed retrospectively from March, 2001 to September, 2008. Results Peripheral or sub-pleural zones were commonly affected mainly within upper lung. Patchy, nodular and cavity shadows were detected respectively in 9 (56.25%), 12 (75.00%) and 8 patients (50.00%), while pulmonary cysts in 14 patients (87.50%). Six patients underwent CTPA, and pulmonary arteries filling defect was found in 2 patients. Pleural effusion and pneumothorax were also found in 10 and 3 patients, respectively, whereas miscellaneously shaped lesions were deteced in all 16 patients. Conclusion MSCT is an important method for diagnosing SPE caused by intravenous drug abuse. Pulmonary arteries filling defect is the direct sign and the cysts and nodular shadow with or without cavity in peripheral or sub-pleural pulmonary zones are characteristic findings.

Objective To investigate the effect of smoking and smoking cessation on the phosphorylation of IKK-β in type 2 diabetic rats. Methods Forty-two six-week-old Wistar rats were randomly divided into 4 groups: normal control(NC, n =7), diabetes control (DC, n =7), diabetes with smoking (DS, n = 14) and diabetes with smoking cessation(SC, n = 14). Rats in DS and SC groups were further assigned randomly into 8w and 12w subgroups. DS group was given passive smoking twice a day for 8 or 12 weeks, while SC group ceased passive smoking for 4 weeks after 8 or 12 weeks of smoking . Western blot method was used to detect the level of IKK-13 phosphorylation in skeletal muscle. Results Compared with the NC group,the phosphorylation of IKK-β protein in DC group was increased (0. 16±0. 05 vs 0. 30±0. 08, P < 0. 01). There was an increasing trend with the phosphorylation level of IKK-β in the DS (8w) subgroup, but there was no statistical difference between the DC group and SC(8w) subgroup (0. 40±0. 09 vs 0. 30±0. 08,0. 36±0. 10, P >0. 05). The phosphorylation level of IKK-β in DS(12w) group increased obviously, being significantly higher than that in the DC group and SC (12w) subgroup(0. 74 ± 0. 11 vs 0.30±0.08,0.35±0.07,P < 0.01). Conclusion With the prolongation of smoking duration, the phosphorylation of IKK-β in type 2 diabetic rats increased. After smoking cessation, the phosphorylation of IKK-β decreased. The phosphorylation of IKK-β may be involved in the mechanism by which smoking causes type 2 diabetes.

In this paper, a new conception pressure displacement wave of vascular wall (PDWVW) and a novel method for diagnosing the vascular disease early were proposed for the first time in accordance to the principle of Frank elasticity of vascular wall; moreover, an original diagnostic equipment noninvasive diagnostic system of human vascular wall, was developed. The feasibility and practicability of the method and equipment assessed in the clinical experiment are also presented.
Blood Flow Velocity ; Blood Vessels ; physiology ; physiopathology ; Elasticity ; physiology ; Humans ; Hypertension ; diagnosis ; physiopathology ; Monitoring, Physiologic ; instrumentation ; Pattern Recognition, Automated ; Pulsatile Flow ; Signal Processing, Computer-Assisted