The effects of PGE2 on glucose metabolism in alloxan-induced diabetic and normal rats were studied by subcutaneous injection of PGE2, with the serum levels of glucose, insulin and glucagon, and histopathological survey of pancreas as indices of assessment. The results revealed that the cytoprotective effect of PGE2 against the damage of pancreatic islets caused by alloxan was invisible, however, a slight reduction of serum glucose level, suppression of insulin secretion and stimulation of glucagon secretion were observed. The hypoglycemic effect of PGE2 in alloxan-induced diabetic rats seemed to be dosage dependent and probably related to temporary hyperglycemia and inhibiton of glucagon on glycogenolysis in liver. Thus, it might be suggested that PGE2 has no cytoprotective effect on pancreatic islets against alloxan damage, but is rather an important factor in regulating insulin and glucagon secretion as well as serum glucose level both in normal and alloxan-induced diabetic rats.

Objective To investigate the surgical approach of the reasonable radical resection for carcino-mas of pancreatic head. Method 35 of 110 patients with carcinomas of pancreatic head underwent the surgical ap-proach of the posterior aspect of the radical resection for carcinomas of pancreatic head, and histopathological findings and prognosis were analyzed. Results The rate of curative resection rate was 31.82%. 3 patients underwent pancre-atoduodenectomy with partial resection of SMV for 9 patients with macroscopic suspicion of invasion of the SMV. The survival rate of the 5 years was 17.14% and the patients exceed 10 years. Conclusion Surgical approach of the reasonable radical resection for carcinomas of pancreatic head allows the reasonable radical resection,and may lead to increasing the resectability rate and the prognosis in the patients with carcinomas of pancreatic head.

Objective To study the role of plasma levels of gastrointestinal hormones and gallbladder kinetics in the pathogenesis of functional dyspepsia. Methods Thirty two patients with functional dyspepsia (FD) and 20 normal subjects as controls were studied. Gallbladder ejection fractions (GBEF) were determined with 99m Tc radionucleography, and plasma levels of motilin (MTL)、cholecystokinin (CCK)、 vasoactive intestinal peptide (VIP) and somatostatin (SS) were measured with radioimmunoassay. Results Both preprandial and postprandial GBEF and MTL levels were markedly lower in FD group than those in control group ( P 0.05), while the levels of postprandial CCK were significantly decreased in FD group ( P 0.05). Conclusion (1) Patients with FD might have a decreased level of preprandial and postprandial gallbladder emptying. The decrease of plasma levels of MTL、CCK and the elevation of VIP might be the cause of gallbladder slow emptying in FD. (2) Radionucleography is non invasive and safe. It can be used in the quantitative analysis and dynamic study of gallbladder and Oddi sphincter functions, and provide accurate, physiological results.

Objective To approach the prognostic factors of head and neck adenoid cystic carcinoma.Methods Fifty-eight head and neck adenoid cystic carcinomas were treated from January 1999 to December 2007.The demographic and clinicopathological data were obtained from a retrospective chart review.The follow-up and survival analysis were carried out to analyze the significant prognostic factors.Results Using the univariate analysis,the variables,such as histologic type,perineural invasion,vascular invasion,recurrence,metastasis and TNM stage were found significantly associated with a worse prognosis (P ＜ 0.05 ).Multivariate analysis showed that histologic type,perineural invasion and TNM stage had an independent prognostic effect on survival (P ＜ 0.05 ).Conclusion The variables including histologic type,TNM stage,perineural and vascular invasion,recurrence and metastasis are important prognostic factors for head and neck adenoid cystic carcinoma.

Objective To analyze the magnetic resonance imaging(MRI) appearance and pathological changes of pig thigh of soft tissues after been shot by rifle,so as to offer a theoretical foundation for wound management in early stage of gunshot injuries.Methods Seventeen adult pigs were intravenously anesthetized and suspended in supine position,the pigs were shot in 10 meters away by domestic-made rifle of 95 type.The wound limb were undergone 1.5T MRI scans and histological observation at 2h,6h,12h,24h,48h,9day,and 18day after shot injury.Results The wounded tissues included four areas of different pathological changes:primary ballistic cavity,coagulative necrosis area,tissue disruption area and tissue distortion area.The thickness of coagulative necrosis area was about 1 to 3 millimeters,which showed double-hypointense signal phenomenon in both T2 weighted image and enhanced T1 weighted image.The tissue disruption area and part of tissue distortion area showed double-hyperintense signal phenomenon in both T2 weight image and enhanced T1 weighted image.Conclusion Penetrating gunshot wound in soft tissues of hind limb can be divided into four areas:primary ballistic cavity,coagulative necrosis area,tissue disruption area and tissue distortion area.MRI can clearly show primary ballistic cavity and coagulative necrosis area.Tissue disruption area and tissue distortion area are hyperintense signal areas on the outside of the primary ballistic cavity,which can be distinguished clearly by pathalogical observation,but tissue disruption area and part of tissue distortion area are undistinguishable by MRI.

Objective To investigate gender differences in mortality after percutaneous coronary intervention(PCI) in contemporary "real world" practice and determine whether female gender is an independent risk factor for PCI mortality.Methods A total of 2 493 patients including 1 860 men(male group) and 633 women(female group) who underwent PCI during July 1st,2004 to September 30st,2005 in Beijing Anzhen Hospital were retrospectively investigated and followed up.The risk factors before PCI and the mortality rates post PCI were compared.Results Women undergoing PCI were older and had more comorbidities than men.However,men were more likely to have depressed ejection fraction,prior myocardial infarction,and prior coronary revascularization.Women demonstrated a ten-fold higher in-hospital mortality rates compared with men(1.1% vs 0.1%,P

Objective To explore the prognostic value of resting heart rate(RHR) in patients with coronary heart disease(CAD) after revascularization.Methods The DESIRE-plus(Drug-Eluting Stent Impact on Revascularization-plus) was a single-center registry study of 3631 patients who had coronary revascularization in our institution between 1 July 2004 and 30 September 2005.The patients were followed up by telephone after discharge.We obtained risk estimates for four groups as RHR:

Objective To assess the influence of hemoglobin(Hb) concentrations on long-term mortality in male patients after percutaneous coronary interventions(PCI).Methods The DESIRE-2(The Second Drug-Eluting Stent Impact on Revascularization Registry) is a single-center registry of 6005 patients undergoing coronary revascularization from Jul 2003 to Sep 2005.There were a total of 2 641 PCI male patients without previous treatment with thrombolytic substances and end-stage renal failure before interventional procedure and the baseline hemoglobin data were available.Depending on their baseline hemoglobin,patients were divided in quintiles.We compared the clinical features and prognosis of all these patients.Results Significant differences were found between the quintiles regarding age(P

Objective To investigate the clinical and pathological features of colonic polyp canceration and related risk factors of colon polyps,and explore clinicopathologic features and major risk factors of the canceration of polyps of colon polyps.Methods Totally 80 patients with colon polyps including 6 cases of cancerations and 20 patients with colon cancers were selected from Xuzhou Tumor Hospital Admissions.Those patients were divided into 74 cases of non cancer group and 26 cases of cancer group.The clinical data,the detection index and the statistical analysis were performed.Results The clinical features of patients included 51 cases of multiple polyps,30 cases of fatty liver,13 cases of fecal occult blood positive,and 30 patients with colonoscopy.There were 218 polyps,191 data intact,and 6 cases showed cancer (3.14％).Inflammatory polyps mainly occurred in rectum,cecum,and significant risk other than the colon.Tubular adenoma occurred mainly in the transverse colon.Sigmoid colon cancer colon polyps of the highest risk showed OR =2.30 (P ＜ 0.05).The cancer risk from high to low was from tubular villous adenoma to villous adenoma hair (P ＜0.01),and no difference in tubular adenoma cancer risk (P ＞0.05).There was no difference between the indexes of the canceration group and the non cancerous group (P ＞ 0.05).The single factor analysis showed pathological type,and the lesion were the main risk factors of malignant colonic polyps (P ＜ 0.05).Multi-factor regression analysis showed WBC,pathological type,and the lesion were the main risk factors of malignant colonic polyps (P ＜ 0.05).Conclusions The colonic polyps in male have higher incidence with fatty liver,hypertension and other pathological features,and are mainly tubular adenomas,inflammatory and hyperplastic polyps,with different lesions,pathological types occur and different cancer risk.

Objectives: To test whether early prophylactic antidepressant treatment by paroxetine has any beneficial influence on the rate of post-stroke depression (PSD) and rehabilitation of stroke patients. Methods: A randomized, placebo controlled study involved 64 consecutive patients admitted to hospital for an acute stroke; they were treated with placebo, paroxetine (20mg/d) respectively. Before and at the end of the observation, we assessed the rate of PSD and activities of daily living (ADL), degree of neurological deficit (modified Edinburgh-Scandinavia scale, MESS) of all the subjects.Results:At the end of 12-week treatment, the treatment group had lower rate of PSD (10.7%) than control (41.4%); and they had lower score in ADL (27.6?4.8/32.8?4.1) and lower score in MESS (11.1?4.3/13.6?3.2).Conclusion:Prophylactic antidepressant treatment by paroxetine can decrease the rate of PSD and improve the neurological function of post-stroke patients.