Objective To study the effect of testosterone on skeletal muscle atrophy of rats induced by dexamethasone,and to explore the relationship between androgen and ubiquitin ligase expression in skeletal muscle.Methods Forty female SD rats were randomly divided into four group:control group(CON),dexamethasone group(DEX),testosterone group(TES)and testosterone plus dexamethasone group(TES+DEX).Blood samples were collected from the abdominal aorta and then centrifuged.The supernatant was collected and stored at-20℃.Gastrocnemius was removed and stored at-80℃.The cross-sectional area(CSA)of muscle fiber was determined by microscopic images of digitized muscle sections,using a computer-based imaging processing system.The expression of muscle atrophy F-box(MAFbx)and muscle RING finger-1(MuRF1)mRNA in skeletal muscle was determined by real-time PCR.The expression of testosterone protein in serum was determined by immunoradiometry.Results Dexamethasone increased the expression of MAFbx and MuRF1 mRNA in skeletal muscle(P

Objective: To investigate the effects of enamel matrix pr ot eins(EMPs) and purified EMPs(EMD) on the proliferation and protein synthesis act ivity of rat ectomesenchymal stem cells in vitro. Methods: C ell culture technique and 3H-leucine label assay were used to measure the pr oliferation and protein synthesis activity of rat ectomesenchymal stem cells exp osed to the EMPs- or EMD-conditioned culture media with different concentratio n. Results: Both EMPs and EMD at 50～200 mg/ml increased the pro l iferation and protein synthesis of the cells in 10-day-culture. EMPs and EMD a t 150 mg/ml showed the strongest effects(P

Objective To compare the therapeutic effect and safety of naloxone ,flumazenil and naloxone combined wiht flumazenil in treating acute diazepam poisoning and to find out ideal therapeutic treatment.Methods 45 patients were divided into three groups at random: naloxone group (n=15), flumazenil group (n=15) and naloxone combined with flumazenil group (n=15). Besides given the same routine therapy to each group, naloxone group received 0.4mg naloxone through intravenation and 1.2mg naloxone through intravenous drip; flumazenil group received 0.1mg flumazenil through intravenation and 0.9mg flumazenil through intravenous drip; naloxone combined with flumazenil group received 0.4mg naloxone and 0.1mg flumazenil through intravenation and 1.2mg naloxone and 0.9mg flumazenil through intravenous drip. Each patient's consciousness status was graded after given drug treatment 0, 5,15,60,90,180 minute. Testing the BR, SR, CK, CK-MB of every patient and recording to the Bp, HR, RR, SpO 2 and the rhythm of the heart continuously. Results At the point of 5 minute, the therapeutic efficiency of the group with combined drug use was higher than that of the naloxone group ( P

Industrial Microbiology is a stem course in the undergraduate and graduate education of Biological Engineering major; and the research and development on computer -aided education in biological fields is just at the beginning stage in China. This paper focuses on the construction and application of web-based courseware for teaching and studying of industrial microbiology.

OBJECTIVE To study the rational use of antibiotics in a comprehensive general hospital.METHODS The clinical data of 583 cases used the five kinds of most frequently antibiotics during Nov 20-26,2006 in a comprehensive general hospital were collected and analyzed.RESULTS The total five kinds of most frequently antibiotics used in this hospital were the third generation of cephalosporins,cefoperazone/tazobactam(Kaisi),flomoxef(Fuomaning),cefoperazone/tazobactam(Kaishute),cefpiramide(Xibaiao) and cefoperazone/tazobactam(Xianbita).The daily frequency of these antibiotics was rational to the drug metabolic dynamics characteristics.Some patients received the long time therapy of antibiotic,the longest one was 22 days.The frequency of over-doses in these patients was 19.9%.CONCLUSIONS Antibiotics use is apparently rational in this hospital and the training and education for drug use should be enhanced in the future.

Surface ultrastructure of Parvatrema timondavidi developmental stages was studied using a scanning electron microscope. The metacercariae were collected from the marine clam, Tapes philippinarum, and juvenile and worms adult were recovered at 1, 2, 3, and 7 days after experimental infection of mice. The metacercariae had a large oral sucker and characteristic lateral projections. Around the lip of the oral sucker many type I and type II sensory papillae were observed, and type III papillae were located symmetrically on the medial side of the lateral projection. Numerous type I papillae were grouped around the genital pore. The tegumental spines were distributed over the worm surface except the lip of the sucker and genital pore. The 1-day old worm had a well-developed ventral sucker, with 6 type II sensory papillae on its outer surface and another 6 type I papillae on the inner side, Two small type I papillae were seen on the anterior side of the ventral sucker. The genital pore was and 15 type I papillae were grouped around it. The 2-, 3-, and 7-day worms revealed that as they grew to be adults, the spine tips became multipointed, the genital pore formed a genital atrium, and the cytoplasmic process became well differentiated. In 2- and 3-day worms 10 type II papillae encircling the lip of the oral sucker, and additional 4 papilled at the dorsal side of 4 dorsal type II papillae were a characteristic feature. The distribution pattern of sensory papillae around the oral sucker and genital pore, and 2 type I papillae on the anterior side of the ventra sucker, was so peculiar in P. timondavidi, that they seem to be useful keys for taxonomic differentiation from other gymnophallids.
parasitology-helminth-trematoda ; Parvatrema timondavidi ; surface ultrastructure ; scanning EM, sensory papilla ; spine ; cytoplasmic process

Child ; Humans ; Kartagener Syndrome ; diagnosis ; therapy ; Male

Objective To evaluate the validity of narrow-band imaging (NBI) system in detection of colorectal adenoma, as compared to that of endoscopy of the colon and rectum, in a systematic review. Methods Relevant literatures were retrieved from Medline (January 1966 to October 2008), OVID (January 1996 to October 2008), EMBASE (January 1980 to October 2008), Coehrane Library (Issue 3, 2008) and Chinese Biological Medicine Disk (CBM disk, January 1997 to October 2008). Quality of the literatures retrieved was assessed based on the Cochrane Reviewers' Handbook and Jadad's score. RevMan version 4. 2 software was used for meta-analysis. Results Seven randomized clinical trials (2838 patients) were included in the study. Compared with white-light colonoscopy, no significant difference was observed in terms of adenoma detection rate (OR 1.18, 95% CI 1.00-1.39, P=0.06) by NBI system, which could significantly improve total number of detection for fiat lesions of the colon and rectum (pooled WMD 0.14, 95% CI 0.02-0.26, P=0.02), but with a longer withdrawn time (pooled WMD 1.05, 95% CI 0.08-1.22, P<0.01). Conclusions Detection rate for flat lesions of the colon and rectum, not for adenoma, can be improved by NBI system and meanwhile its withdrawn time is prolonged, indicating that routine use of NBI system for detecting colorectal adenomas may be recommended only with its further refined technique.

Objective To investigate the effect of morphine preconditioning on mitochondrial permeability transition pore (MPTP) and its protective mechanism after myocardial ischemia-reperfusion injury. Methods A rat model of ischemia-reperfusion injury was established. Forty rats were injected with 2-3[H] DOG and then divided into 4 groups randomly: a sham operation (S) group, an ischemia-reperfusion injury (IR) group, a morphine preconditioning (Mp+IR) group, and a cyclosporine A preconditioning (CsA+IR) group. We monitored the concentrations of serum creatine kinase-Mb (CK-Mb) and cardiac troponin I (cTnI), and measured myocardial mitochondrial 2-3[H] DOG, cytochrome c content, Ca2+ concentration ([Ca2+]m), the velocity of Ca2+ intake and reaction half time of mitochondrial permeability transition pore (MPTP t1/2) in the 4 groups. Results The concentrations of serum CK-Mb and cTnI decreased more in the Mp+IR group and the CsA+IR group than those of the IR group. The concentrations of 2-3[H]DOG and [Ca2+]m in the IR group were evidently higher but the level of cytochrome c was lower than those of the sham operation group. The concentrations of 2-3[H] DOG and [Ca2+]m in the Mp+IR group decreased whereas the concentration of cytochrome c increased compared with those in the IR group. Mitochondrial 2-3[H]DOG content was positively correlated with the concentration of calcium (r=0.797, P<0.01). The 2-3[H]DOG and [Ca2+]m content were negatively correlated with cytochrome c in the IR group (r=-0.805 and r=-0.648, respectively, P<0.01). MPTP t1/2 in the IR group was shortened evidently, and that in the Mp+IR and CsA+IR group was significantly lengthened. Conclusion Morphine preconditioning may have myocardial protective effect through unburdening the calcium overload and lengthening the MPTP t1/2.

Objective To investigate the clinical value of multiband mucosectomy (MBM) for the treatment of early esophageal cancer and precancerous lesions.Methods The clinical data of 43 patients with early esophageal cancer or precancerous lesions (including 13 cases of early esophageal cancer and 30 cases of precancerous lesion) who were admitted to the Tengzhou Central People's Hospital from January 2010 to January 2011 were retrospectively analyzed.A total of 51 lesions were confirmed by preoperative endoscopy and mucosal biopsy,and then were treated by MBM.Results A total of 52 MBM procedures were carried out,and 180 lesions were resected.The sizes of the lesions ranged from 10 mm × 8 mm to 25 mm × 23 mm,and the mean operation time was (37 ± 5)minutes.The complete resection rate was 92.2％ (47/51).The submucosal layer of 1 patient was invaded by squamous cell carcinoma postoperatively,and the patient was treated by operation;1 patient wth squamous epithelium carcinoma was treated by radiotherapy at 2 weeks after MBM ; the other 2 lesions were treated by argon plasma coagulation (APC).Four lesions with bleeding were detected during 52 MBM procedures,and no esophageal perforation was detected during MBM.Early complications consisted of delayed bleeding (1 patient,cured by APC) and slight esophageal stenosis (1 patient,recovered at postoperative month 6).The accurate rate of pathological examinations was 51.0％ (26/51).Forty-three patients were followed up for 1 year,3 patients with tumor recurrence were treated by MBM or APC.No death occurred during the followup.Conclusion MBM is a safe and effective technique for the treatment of early esophageal cancer and precancerous lesions.