Humans ; Otitis Media ; etiology ; pathology ; Toll-Like Receptors

Cartilage ; surgery ; Humans ; Tympanoplasty

It is a common phenomenon that medical research is out of line with clinical work at present. In fact, there is intrinsic interrelation between clinical work and research. Thinking and exploration at clinics are part of the research, and any research based on chnical work not only has great value, but also receives strong support from the state. However, to translate clinical research into clinical practice is difficult, which requires evidence-based methodology, a knowledgable team with persistence andtechnologies, et al.

Objective To investigate the effect of local delivery of paclitaxel on bile duct scar formation and biliary stricture in guinea pig.Methods Models of end-to-end anastomosis of the common bile duct were established in 42 guinea pigs.The animals were randomly divided into paclitaxel and control groups.In the paclitaxel group,the drug solution(1000 ?mol/L,0.05 ml) was smeared onto the anastomotic wound before closing the abdomen.The animals were killed in 3 days,2 weeks,and 1 month after the operation(7 in each group at each time point).The sepcimens of the common bile duct were obtained for histological examination.Transmission electron microscopy was employed to observe the ultrastructure of paclitaxel-induced apoptotic cells.Results Histological examination showed inflammatory reaction and hyperplasia of the bile duct wall.The bile duct wall of the paclitaxel group was significantly thiner than that of the control group in 3 days and 1 month after the operation [3 days:(574.41?24.53)?m vs(802.98?24.42) ?m,t=-6.604,P=0.000;1 month:(1383.36?36.64) ?m vs(1518.56?34.89)?m,t=-2.672,P=0.020].Paclitaxel-induced cell apoptosis and injured cell organs were found by transmission electron microscopy.Conclusion Single local delivery of paclitaxel can inhibit biliary stricture in one month.

Accidents, Occupational ; Humans ; Hydrogen Sulfide ; poisoning

Adult ; Ear Canal ; Female ; Hearing Loss, Conductive ; surgery ; Humans ; Male ; Mastoid ; surgery ; Middle Aged ; Postoperative Period ; Tympanoplasty

Objective To investigate the effects of total flavonoids of Herba Epimedii(HEF)on the metabolism of typeⅠcollagen and the expression of cathepsin K in the bone of ovariectomized(OVX)rats. Methods Fifty-four female SD rats were allocated into 6 groups;OVX group,sham operation group,OVX rats followed by three doses of HEF(40,80 and 160 mg?kg~(-1)?d~(-1))and nilestriol(0.1 mg?kg~(-1)?d~(-1))for 12 weeks respectively.Bone mineral density(BMD)of whole body was determined by dual-energy X-ray absoptiometry.The level of cross-linked N-telopeptide of typeⅠcollagen(NTx)in the urine were determined by ELISA.The amounts of typeⅠcollagen protein and cathepsin K protein in bone tissue were detected by immunohistochemical method and Western blotting.Results Compared with OVX group,the total BMD values in the HEF treated groups were increased(all P＜0.05),and the expression levels of typeⅠcollagen in three HEF treated groups rose significantly in a dose-dependent manner after 12 week,and simultaneously,both the expression of cathepsin K in bone and the level of NTx/Cr were reduced markedly(P＜0.05),being most significant(P＜0.01)in the group treated with the highest dose of HEF(160 mg?kg~(-1)?d~(-1)).Conclusion HEF seems to be able to elevate BMD and improve bone quality of rats via promoting synthesis and inhibiting proteolysis and absorption of typeⅠcollagen in the bone.

Recently,study on cencer stem cells has been a focus of study.Cancer stem cell is a small population of cencer cells possessing the properties of stem cells:self-renewal,differentiation and proliferation.To date,the existence of cancer stem cells has been proven in acute and chronic myeloid leukemia,breast cancer,brain tumors,liver cancer and colon cancer,etc..In this article we reviews the current progress on cancer stem cells,including the defination,existing evidence,research methods, and challenges in clinical application.

Objective To investigate the clinical effectiveness and safety of Chinese medicine fumigation-washing therapy in treating talipes equinus denervated ulcer induced by tethered cord syndrome(TCS) . Methods A total of 21 qualified patients were randomized into fumigation-washing group (N=12) and antibiotics group (N=9). Patients of fumigation-washing group were given fumigation-washing therapy with the self-prescribed Chinese medicine, and antibiotics group was given intravenous dripping of sensitive antibiotics. The treatment lasted for 7 continuous days. The clinical efficiency of the two groups was evaluated after treatment, and the period of preparing for surgery was recorded. The changes of ulcer area and ulcer surface exudate volume in the two groups were observed before and after treatment. And the changes in blood routine examination, hepatic and renal function, and immune function of the fumigation-washing group were monitored. Results(1) The total effective rate of fumigation-washing group was 83.3％, and that of the antibiotics group was 77.8％, the difference being insignificant (P>0.05). (2) The ulcer area and ulcer surface exudate volume in both groups were significantly decreased after treatment (P<0.05 compared with those before treatment), and the decrease in the fumigation-washing group was superior to that of the antibiotics group(P < 0.05).(3) The period of preparing for surgery in the fumigation-washing group was(7.75 ± 1.71)d, shorter than(11.56 ± 4.39) d in the antibiotics group, the difference being significant(P < 0.05).(4) There were no statistically significant differences in the hepatic and renal function, and immunoglobulin and complement levels in the fumigation-washing group before and after treatment (P > 0.05). (5) The average daily hospitalization fee in the fumigation-washing group was (47.98 ± 5.17) yuan, less than (227.88 ± 43.24) yuan in the antibiotics group, and the difference was significant between the two groups (P < 0.05). Conclusion Chinese medicine fumigation-washing therapy is effective, safe and practical in treating talipes equinus denervated ulcer induced by TCS, and the therapy has the advantages of decreasing exudation, promoting ulcer healing, reducing hospitalization fee, shortening the period of preparing for surgery, and decreasing the incidence of infection.

Background The main mechanism of diabetic retinopathy (DR) is the formation of retinal neovascularization. Vascular endothelial growth factors (VEGF) is primarily factor for DR. Objective The goal of this study was to investigate the effects of angelicae sinensis decoction for supplementing blood ( ASD), a kind of traditional prescription of Chinese herbal medicine, on vascular endothelial growth factor (VEGF) level in vitreous and serum of STZ-induced type 2 diabetes mellitus. Methods Thirty-four SPF male SD rats were fed using high fat diet for 8 weeks and then the streptozocin of 25 mg/kg was intraperitoneally injected to create the type 2 diabetic models. ASD (3.6 g/kg) and 10 mg/kg Gli of 5 mi were administered intragastrically from the 4th day of high fat die though 8 weeks respectively. Other 10 matched rats were used as normal control group. The body weight, blood glucose level ,triglycerides (TG) and high density lipoprotein (HDL) were detected in 4 and 8 weeks after usage of drug. The vitreous and serum samples were obtained in the 8 th weeks for the VEGF detection by enzyme-linked immunosorbent assay (ELISA). This experiment comlied with the Regulations for the Administration of Affair Concerning Experimental Animals by State Science and Technology Commission. Results The body weight and HDL in DM group were significantly lower than those of normal control group in 4 or 8 weeks ( P＜0. 01 ), but in ASD and Gli groups ,the body weight and HDL were higher than those of the DM group (P＜0. 05 ). the blood glucose level and TG were elevated in DM group compared with normal control group (P＜0. 01 ), but those in ASD group and Gli group were decreased in comparison with DM group ( P＜0.05 ). EIISA revealed that no significant differences were found in VEGF levels between normal control group and ASD group or Gli group (P＞0. 05 ), but in DM group, the serum VEGF level (147.65±4. 55 ng/L) was reduced and vitreous VEGF level (673.45± 100. 85 ng/L) was raised,showing the considerable differences (P＜ 0.05 ). No any correlation was found between serum VEGF level and vitreous VEGF level (r=0.314,P＞0. 05). Conclusion ASD can decrease the VEGF level in vitreous,implying that ASD postpone the occurrence of diabetic retinopathy in DM rat.