During L-lactic acid fermentation with Rhizopus oryzae,there existed a branch pathway by which pyruvate was transformed to eth- anol catalyzed by pyruvate decarboxylase(PDC)and alcohol dehydrogenase(ADH),thus decreasing the flux of pyruvate to lactic acid.In this study,the spores of Rhizopus oryzae AS3.3462 mutagenized with nitrosoguanidine(NTG),the appropriate dosage was 0.15 mg/mL and the lethal rate was 70%～80%.Two mutants,named mut-1 and mut-2,with decreased ADH activity were screened out by yeast peptone dextrose(YPD)agar medium containing allyl alcohol.These two mutants had decreased ADH activities of 41.63% and 50.29% compared with the parent strain.The fermentation behavior after 72h showed that the yields of ethanol produced by mut-1 and mut-2 were 4.87g/L and 6.56g/L respectively,while the wild type strain was 28.9g/L,and the lactate concentrations of mut-1 and mut-2 also increased from 40.31g/L to 54.45g/L and 44.07 g/L,respectively.It is also found that mut-1 and mut-2 had a high reducing sugar consumption rate and biomass accumulation than its present strain

BACKGROUND: Autoreactive T cells are a group of specialized cells that exert a peripheral immunosuppressive effectthrough certain mechanisms ensuring self-tolerance within the adaptive immune system. The discovery of the latestsurface markers for natural CD4+CD25+ regulatory T cells has re-emphasized the concept of peripheral regulation orsuppression of T cells. Several groups have begun to investigate the role of regulatory T cells in animal models ofallogeneic hematopoietic stem cell transplantation.OBJECTIVE: To review the recent results regarding protection from graft-versus-host disease by adoptively transferredCD4+ CD25+ regulatory T cells in mice and to discuss the latest findings from clinical studies on hematopoietic stem celltransplantation.METHODS: We retrieved CNKI, PubMed and Medline databases for articles concerning CD4+CD25+ regulatory T cellsand graft-versus-host disease published from 2000 to 2015. According to inclusion and exclusion criteria, 46 paperswere included in result analysis.RESULTS AND CONCLUSION: CD4+CD25+ regulatory T cells expressing the transcriptional repressor FOXP3 mediateimmunoregulatory functions and are critical for the prevention of autoimmune diseases. As peripheral tolerance inductionis a prerequisite for successful allogeneic hematopoietic stem cell transplantation, the role of CD4+CD25+ regulatory Tcells in transplantation models and clinical trials is now under investigation in many laboratories. CD4+CD25+ regulatoryT cells play an important role in the development of graft-versus-host disease after allogeneic hematopoietic stem celltransplantation. CD4+CD25+ regulatory T cells not only effectively prevent and treat graft-versus-host disease but alsoretain graft-versus-leukemia effect.

Objective To observe the effect of electroacupuncture on migraine. Methods 60 patients were divided into electroacupuncture group (30 cases) who received electroacupuncture, and control group (30 cases) who received local nerve block. Results In the electroacupuncture group, 22 (73.33%) cases were cured, 6 (20.00%) cases were obviously improved, 2 (6.67%) cases were improved. While in control group, 17 (56.67%) cases were cured, 5 (16.67%) cases were obviously improved, 8 (26.67%) cases were improved. There was significant difference between these two groups (P<0.05). The time of treatment was less in the electroacupuncture group than in the control (P<0.05). Conclusion Electroacupuncture is effective on migraine.

upper and they were all higher compared with the control (P

[Objective] To investigate the effects of Naoyi'an (NYA) on the expression of ICAM-1 in the brain of rats with experimental intracerebral hemorrhage.[Methods] The rats model of intracerebral hemorrhage was prepared by type Ⅶ collagenase injected into globus pallidus under stereotaxic apparatus.Then,the expression of ICAM-1 with or without intervention with NYA was determined in the brain of these animals respectively by in situ hybridization and western blot technique.[Results] Among the modeling animals,the expression of ICAM-1 was increased after the operation.In contrast,the expression of ICAM-1 was significantly down-regulated in the rats treated by NYA(P

ObjectiveTo recover the effect of rehabilitation therapy on the automatic nervous system(ANS)of patients with stroke. MethodsThe multiple index measurement was applied to measure ANS after stroke in 31 patients. The therapy of the Bobath,Brunnstrom and Rood were used as the basic methods for 3 months.ResultsThe balance index of the automatic nerve after treatment by the rehabilitation therapy was higher markedly than before(P<0.01).There is a correlativity with recovery of the movement function. Conclusions The rehabilitation can improve the function of automatic nerve.

Carcinoma, Non-Small-Cell Lung ; genetics ; metabolism ; pathology ; DNA Mutational Analysis ; DNA, Neoplasm ; genetics ; isolation & purification ; Genes, erbB-1 ; Humans ; Lung Neoplasms ; genetics ; metabolism ; pathology ; Mutation ; Paraffin Embedding ; methods ; Polymerase Chain Reaction ; methods ; Real-Time Polymerase Chain Reaction ; methods ; Receptor, Epidermal Growth Factor ; genetics

BACKGROUND:The majority of published article on cardiopulmonary resuscitation (CPR) used healthy animals. In fact, patients commonly have severe heart diseases before CPR, leading to ventricular fibrillation. OBJECTIVE: To investigate outcome of myocardial function and cardiopulmonary resuscitation in myocardial infarction rats treated with bone marrow mesenchymal stem cells (MSCs) transplantation.DESIGN, TIME AND SETTING: A randomized, controlled animal experiment was performed at the University of Southern California and Second Hospital of Sun Yat-sen University from April to August 2007.MATERIALS: A total of 18 adult male SD rats were randomly divided into model control and cell transplantation groups with 9 animals in each group. In addition, 1 SD rat aged 1 month was used to prepare bone marrow MSCs.METHODS: Myocardial ischemia was induced by ligation of the left anterior descending artery (LAD). Animals respectively received 5×106 MSCs (0.1 mL) marked with PKH26 in phosphate buffer solution (PBS) or PBS alone 4 weeks after LAD ligation. Ventricular fibrillation and CPR were performed 4 weeks after MSCs or PBS injection.MAIN OUTCOME MEASURES: Heart function was evaluated by ultrasound cardiography 2, 4 weeks after transplantation; hemodynamics was measured before and 4 hours following CPR. Myocardial tissues were harvested 72 hours after CPR for pathological exanimation.RESULTS: Compared with model control group, ejection fraction of transplantation group was significantly increased 2 and 4 weeks after transplantation (P<0.01), and cardiac index, dp/dt40, and -dp/dt were significantly improved before and within 4 hours after CPR (P<0.01, P<0.05). Moreover, the rats survived longer in transplantation group (72 hours) after CPR compared with control group (P<0.05). Pathological section results showed a large number of PKH26-1abeled MSCs in the rnyocardium.CONCLUSION: Myocardial function, hemodynamics and survival time after CPR were significantly improved in animals treated with MSCs transplantation.