Objective: To prepare betahistine dihydrochloride sustained-release matrix tablets. Methods: The tablets were pre-pared with water soluble HPMC matrix, and the release behaviors were investigated by single factor study. The formula and preparation procedures were optimized by orthogonal design. Results:The optimal technology was as follows:using 60% HPMC K15M as the ma-trix material, calcium hydrogen phosphate as the filler, 10% PVP in 90% alcohol as the bonding agent;wet granulation compression technique was used to prepare the tablets with the tablet weight of 500mg. The in vitro drug release fits a Higuchi equation and the drug can be sustained-released within 12 h. Conclusion:The preparation technology is simple and the tablets have sustainol release behav-ior.

Objective To summarize early complications and treatment after regional pancreatectomy for periampullary carcinoma. Methods Clinical data of 325 periampullary carcinoma cases in our hospital from Dec 1997 to Jul 2004 were collected. Postoperative early complications were analyzed. Results There were 109 cases from Dec 1997 to Dec 2001 and 216 cases from Jan 2002 to Jul 2004. Early complications rate were 21/109( 19. 3% ) and 18/216(8. 3% ) respectively (P

Objective To observe the morphological characteristics of congenital optic disc pit with maculopathy, the natural de-velopment, and changes after laser photocoagulation. Design Retrospective case series. Participants Twelve cases with congenital optic disc pit. Methods Records of 12 patients with congenital optic disc pit with maculopathy were reviewed. Clinical examination includes optical coherence tomography (OCT), color fundus photography, and fluorescein angiography (FA). The data was analyzed with the exist-ing theory of pathogenesis of the disease. Main Outcome Measures Visual acuity and morphology of macupopathy. Results All the patients were noted to have serous maculopathy associated with optic disc pit. Serous detachment of neuro-retina was found in two pa-tients, schisis of neuro-retina in two patients, and both serous detachment and schisis of nearo-retina were observed in other patients. Two patients were associated with choroidal coloboma. Four patients were treated with laser photocoagulation, in which 3 patients had vision improved. Conclusions Schisis and detachment of neuro-retina are the important morphologic changes of congenital optic disc pit with maculopthy. Proper understanding of the relationship between the development of the disease and these changes will be helpful to study its pathogenesis. Patients may benefit in part from laser photocoagulation. (Ophthalmol CHN, 2009, 18: 233-236)

Colorectal cancer is currently the third most common cancer worldwide,and there are still half of the patients undergoing recurrence and metastasis after surgical treatment,so it is necessary for colorectal cancer patients to receive radiation therapy routinely.Due to the side effects brought by radiotherapy,it is of great importance to solve how to minimize the radiation dose in radiation therapy and improve radiation sensitivity.In recent years,people discovered that microRNAs can not only be involved in the origins of colorectal cancer and progress,but also play a increasingly important role in cancer radiosensitivity.MicroRNAs can regulate tumor radiosensitivity by influencing tumor microenvironment and function on target genes.DNA damage response caused by radiation includes the activation of ATM,histone modification and chromatin remodeling,cell cycle arrest,damage repair and apoptosis.microRNAs can regulate tumor radiosensitivity through above processes.This review focuses on the mechanism of microRNAs in affecting DNA damage repair and prospects the future of microRNAs in influencing the sensitivity of cancer radiotherapy in clinical application.

OBJECTIVE:To investigate the effect of different doses ambroxol hydrochloride on lung protection of patients in perioperative thoracotomy. METHODS:60 patients in perioperative thoracotomy were randomly divided into control group(30 cas-es)and observation group(30 cases). Control group received 30 mg Ambroxol hydrochloride injection from 1 week before surgery to 1 week after surgery,adding into 100 ml 0.9% Sodium chloride injection,intravenously,twice a day. Observation group re-ceived 300 mg Ambroxol hydrochloride injection from preoperative 1 week to postoperative 1 week,adding into 100 ml 0.9%Sodi-um chloride injection,intravenously,twice a day. All patients received the second-generation cephalosporin antimicrobial drugs for anti-infection after surgery. lung surfactant-associated protein A(SP-A),intercellular adhesion molecule(ICAM-1)levels preopera-tive 1 week and postoperative 1 week,and incidence of postoperative complications in 2 groups were observed. RESULTS:Preop-erative 1 week,there were no significant differences in the SP-A and ICAM-1 in 2 groups(P>0.05). Postoperative 1 week,SP-A and ICAM-1 in control group and ICAM-1 in observation group were significantly higher than preoperative 1 week,but SP-A and ICAM-1 in observation group were lower than control group,the differences were statistically significant(P<0.05),there were no significant differences in SP-A in preoperative 1 week and postoperative 1 week(P>0.05). The incidence of postoperative compli-cations in observation group was significantly lower than control group,the difference was statistically significant(P<0.05). CON-CLUSIONS:The effect of high-doses ambroxol hydrochloride on lung protection of patients in perioperative thoracotomy is signifi-cantly superior to small dose,which can reduce the incidence of lung complications.

Humans ; Enhanced Recovery After Surgery ; Stomach Neoplasms/surgery* ; Length of Stay ; Laparoscopy ; Postoperative Complications ; Gastrectomy

Cholangitis, Sclerosing ; diagnosis ; therapy ; Hepatitis, Autoimmune ; diagnosis ; therapy ; Humans ; Liver Cirrhosis, Biliary ; diagnosis ; therapy

OBJECTIVETo investigate the short-term clinical outcome of unicompartmental knee arthroplasty for the treatment of spontaneous osteonecrosis of the knee.

METHODSFrom September 2013 to April 2014,5 patients with spontaneous osteonecrosis of the knee underwent unicompartmental knee arthroplasty, included 3 males and 2 females, aged from 65 to 80 years old with an average of 74 years. The courses of disease was from 1 to 6 years with the mean of 3 years. According to the radiographic staging criteria of Koshino, 1 case was stage II, 2 cases were stage III, 2 cases were stage IV. Clinical effects were assessed by VAS score, HSS score, and knee range of motion, tibiofemoral angle before and after operation.

RESULTSAll the patients were followed up from 6 to 7 months with an average of 6.4 months. All incisions obtained primary healing, and there were no complications such as infection, thrombosis, fracture of lower limbs. All 5 patients' pain relieved and their knee function improved significantly after operation, but knee range of motion had no obviously improved. Postoperative HSS scores, VAS scores, tibiofemoral angle were significantly improved than that of preoperative.

CONCLUSIONThe short-term effect of unicompartmental knee arthroplasty in treating spontaneous osteonecrosis of the knee is satisfactory.

Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Knee ; methods ; Female ; Humans ; Joint Diseases ; physiopathology ; surgery ; Knee Joint ; Male ; Osteonecrosis ; physiopathology ; surgery ; Range of Motion, Articular

Objective To control residual DNA by optimizing methodology during the production of rabies vaccine using Vero cells as a vector .Methods The antigen recovery rate was assessed by linked immunosorbent assay-sandwich technique while the residual DNA was detected by DNA probe hybridization method .Antigen recovery and removal of DNA were the main indexes for evaluateing ultrafiltration , the vital part of rabies vaccine production .Three key factors in ultrafiltration were assessed: selection of membrane packages , ultrafiltration pressure and the concentration ratio .Then protamine was used to pretreat ultrafiltrates .Based on the two indicators mentioned above , the effect of protamine pretreat-ment on the ultrafiltrate was evaluated .Results and Conclusion The optimum condition of ultrafiltration was obtained on the basis of the general antigen recovery rate , DNA removal rate and actual production .The primary parameters of ultrafil-tration were as follows:7.5 ×105 ultrafiltration membrane packages, 20 times concentrated, 15 psi ultrafiltration pressure. After pretreatment with protamine , ultrafiltration has proved to be a molecular sieve in intercepting DNA ,while protamine can tangle the fragmented DNA and form a larger molecular segment , which is believed to be more conducive to ultrafiltra-tion interception .

AIM: To study the renoprotective and synergistic effects of sesamin in combination with vitamin E on nephropathy in rats with the metabolic syndrome.METHODS: Nephropathy of metabolic syndrome in rats was induced by high-fat and high-carbohydrate diet.Sesamin(30 mg?kg-1?d-1),sesamin +vitamin E [(15+20) mg?kg-1?d-1),sesamin +vitamin E(30+20) mg?kg-1?d-1] and vitamin E(20 mg?kg-1?d-1) were given to rats with metabolic syndrome at 9th week and lasted for 16 weeks.After 24 weeks,the body weight,left kidney humid weight,blood glucose(BG),blood lipids(BL),systolic blood pressure(SBP), renal function,and indexes of oxygenation and antioxygenation for renal cortex were measured.Pathological changes,collagen deposition and iNOS protein and nitrotyrosine expression of kidney were observed by HE-stain,Masson-stain and immunohistochemical method,respectively.RESULTS:(1)In high-fat and refined-sugar diet group(HFS): the levels of BG,BL,SBP,and MDA,OH and NO2-/NO3-in renal cortex were increased;the activities of T-SOD, CAT and GSH-Px in renal cortex were decreased;the expressions of iNOS protein and nitrotyrosine in kidney were up-regulated;the inflammatory cell infiltration and collagen deposition in renal glomerulus and renal interstitium were severe;the glomerular sclerosis and renal interstitial fibrosis were obvious;the renal function was deteriorated.(2)In sesamin +vitamin E [(30+20) mg?kg-1?d-1] group: the decreases in BG,BL,SBP,MDA,OH-and NO2/NO3-in renal cortex were obviously observed;the activities of T-SOD,CAT and GSH-Px in renal cortex were increased;the expressions of iNOS protein and nitrotyrosine in kidney were down-regulated;the inflammatory cell infiltration and collagen deposition in renal glomerulus and renal interstitium were improved;the glomerular sclerosis and renal interstitial fibrosis were reversed;the renal function was ameliorated.The therapeutic effect of sesamin +vitamin E[ (30+20) mg?kg-1?d-1] surpassed that of using sesamin or vitamin E alone(P