Heart failure is mainly characterized by myocardial systolic dysfunction,which is based on excitement-contraction coupling on the cellular level,and calcium (Ca2+) signaling plays a very important role in this process.The ryanodine receptor (RyR)/calcium release channel on the sarcoplasmic reticulum (SR) is the major Ca2+ source of required for cardiac muscle excitation contraction coupling.RyR2 phosphorylation is the basis of SR calcium release,and RyR2 phosphorylation is mainly controled by protein kinase A (PKA) and calcium/calmodulin dependent protein kinase Ⅱ (CaMK Ⅱ).Although widely research in this area,excessive activation of RyR2 phosphorylation involved in the pathogenesis of heart failure are still controversial,which is discussed in this review.

The risk factors of diastolic heart failure include among others: hypertension,diabetes,myocardial ischemia and aging.The underlying mechanisms for this cardiac complication are incompletely understood.With the increase of aging of the population,the prevalence and mortality of diastolic heart failure is rising gradually.It seriously affects the life quality and life span of people.In order to more truly reveal the underlying mechanisms of diastolic heart failure and to develope novel therapeutic strategies,the experimental animal models are extremely important.The present review focuses on providing an overview of the characteristics of these models for the growing number of investigators who seek to understand the pathology of diastolic heart failure.

Objective To investigate the effects of ulinastatin on renal ischemia/reperfusion (I/R) in rats and assess the possible mechanism. Methods Seventy-five male SD rats weighing 210-250 g were randomly divided into three groups with 25 animals in each group : (Ⅰ) control group received sham operation; (Ⅱ)renal I/R group and (Ⅲ) ulinastatin + I/R group. The animals were anesthetized with intraperitoneal ketamine 50 mg?kg-1 . Bilateral kidneys were exposed through midline incision and bilateral renal pedicles were occluded with atraumatic mini-clamp. The kidneys turned pale. In control group the kidneys were exposed but their pedicles were not clamped, while in ulinastatin group (Ⅲ) ulinastatin 12 500 u was given i. v. 30 min before ischemia and at the beginning of reperfusion. Blood samples and kidneys were obtained at 0, 2, 6, 12, 24 h of reperfusion for determination of blood urea nitrogen (BUN) and serum creatinine (Cr) concentrations and the expression of heat shock protein 70 (HSP 70) and bcl-2 in kidney and for microscopic examination. Paller scoring system was used to evaluate the severity of histological changes ( the higher the score, the worse is the change) .Results BUN and serum Cr levels were significantly lower at 12 and 24 h of reperfusion in group Ⅲ than in group Ⅱ (P 0.05) . Conclusion Ulinastatin can reduce the risk of renal dysfunction and injury associated with renal I/ R. The protective effect of ulinastatin may be associated with the up-regulation of bcl-2 expression.

Objective To report on the outcome of postoperative radiotherapy of keloid. Methods The recurrence rate of 83 patients with keloid which had been treated by surgery and postoperative radiotherapy were retrospectively reviewed with ? 2 check and stepsise LOGISTIC regression using software SAS 6.12. Results Recurrence of keloid after postoperative radiotherapy was correlate with size of lesion and interval after operation but not with sek,age or site of lesion. Conclusions With any an authentic method of postoperative radiotherapy,recurrence of keloid would only be correlated with size of lesion and interval after operation.

ObjectiveTo assess the effect of balloon o f ureter through ureteroscopy for management of ureter stenosis.Met hods42 cases ureter stenosis underwent balloon dilation of ureter,2 2 being male,20 being female.The average age was 46 years.There was 5 ureteropel vic junction stenosis,8 upper ureter stenosis,5 middle part stenosis,24 lower pa rt stenosis.The length of stenosis was from 0.5 cm to 2.0 cm.Result sThe balloon dilating catheter was passed over the ureter stenosis area and was put in proper position in 39 cases.3 cases were failed(7.2%). 37 ca ses successfully underwent balloon dilation of the ureter on one session.All pat ients were followed up for 6 to 24 months(mean 14 months).The degree of hydronep hrosis decreased with no recurrence in 37 cases(88.1%).2 casese failed to gain the effect after the double-J stent was removed(4.7%). There are no serious co mplication found in all patients.ConclusionsBalloon di lation of ureter offers many advantages,such as:good result,repeatable and reduc ing the cost and hospital stay.

Radiation-induced organ fibrosis is a common complication of tumor radiotherapy and radiation accident, which poses a serious threat to patients′life.TGF-β, CTGF, PDGF-BB and NF-κB all play important roles in this pathological process, and drugs targeting these key molecules are also being developed, some of which have shown positive therapeutic effects.This review focuses on the molecular mechanisms and therapeutic progress involved in radiation-induced organ fibrosis, intended to provide a new clue to the complex process of radiation-induced organ fibrosis, and to provide a new strategy for treatment.

With the development of medical innovation ability,the research output becomes more and more diversified.However,regarding to the indexes for evaluating the scientific research output,domestic scholars have variety of opinions.This article briefly introduces the commonly used research output indexes in China,including papers,monographs,patent and related achievements.Such outputs are divided into literature metrology index and Alternative metrics.Authors hope this attempt can establish a suitable evaluation index system of medical scientific research output in Fujian province.

Objective To evaluate the effect of stereotactic radiotherapy combined with conventional radiotherapy for non-small cell lung cancer(NSCLC)patients with positive stump at the resected bronchial margin. Methods From June 1996 to November 2000, 41 NSCLC patients in whom microscopic residual disease found pathologically at the resected bronchial margin were treated by: conventional radiotherapy followed by stereotactic radiotherapy ( RT+SRT group 18 patients), while the other 23 patients received routine radiotherapy alone (RT group). Results The 1-,2-and 3-year local disease-free rates were better in RT+ SRT group (92.3%,~83.1% and 83.1%) than those in RT group (80.2%,60.2% and 39.5% ). However, no significant difference was found in the complication rate or survival rate between the two groups. Conclusions Stereotactic radiotherapy is effective as a boost irradiation to patients with non-small cell lung cancer with microscopic residual disease at the resected bronchial margin by improving the local control.

OBJECTIVE: To observe the therapeutic effect of Xincang Decoction on chronic airway inflammation in children with asthma in clinical investigation. METHODS: Xincang Decoction was composed of Flos Magnoliae (Xinyi) and Fructus Xanthii (Cangoerzi), the traditional Chinese herbs for expelling wind. Sixty cases of children with bronchial asthma in remission stage were randomly divided into two groups. Thirty cases in the treatment group were treated with Xincang Decoction and the others in the control group were treated with ketotifen fumarate. The therapeutic effects of the two groups were compared, and the peripheral eosinophil (EOS) count, the levels of immunoglobulin E (IgE), interleukin 4 (IL-4) and interleukin 5 (IL-5), and the pulmonary functions were observed before and three months after the treatment. RESULTS: After three months treatment, the results showed that the total response rates of the treatment and the control group were 83.3% and 80.0%, respectively, without marked difference (P>0.05). The levels of EOS and IL-5 were obviously decreased after the treatment, and the levels of EOS and IL-5 of the patients in the treatment group were lower than those in the control group (P<0.05). Meanwhile the forced expiratory volume in one second (FEV(1)) was improved after the treatment, and the FEV(1) of the patients in the treatment group was higher than that of the patients in the control group (P<0.05). CONCLUSION: Xincang Decoction can decrease the levels of EOS and IL-5 and improve the pulmonary function in treating chronic airway inflammation in children with bronchial asthma in remission stage.

Objective To study the effect of the health education path on health education in patients with diabetes.Methods According to random number table method,100 type 2 diabetes mellitus(T2DM)patients were divided into control group and health education path group.Health education path group received health education through the health education path and the control group by traditional methods.The rate of diabetes-related knowledge mastery and the control of blood glucose in two groups were compared. Result The rate of diabetes-related knowledge mastery and the control of blood glucose in the health education path group were significantly better than those of the control group(P<0.05,for both).Conclusion Health education according to health education path to the patients with diabetes can increase the degree of knowledge and the control effect of blood sugar.