Based on the lethal rate, positive and negative mutation rate, the optimal doses of UV, HNO2, UV + AO treating S. hygroscopicus NND-52-29 were determined. The mutant strain A19 that was obtained showed the derepres-sive property to glucose and the nigericin yield of A19 could be increased by 128%. When it was subcultured combined with natural screening, its stability was rather satisfied.

Objective To investigate the relationship of the expression characteristics of CD4 + CD25 + Foxp3 + Treg cells and CD4 + IL-17 + Th17 cells and the progress of the elderly patients with laryngeal cancer.Methods Sixty elderly patients diagnosed as laryngeal cancer in our hospital from January 2013 to June 2014 were chosen.Among them,28 cases had lymph node metastasis and 32 without.Thirty cases without laryngeal diseases were chosen as control.The peripheral blood of elderly patients with laryngeal cancer and normal controls was extracted.The expression levels of Treg and Th17 cells in all groups were detected with flow cytometry,and the expression changes of Foxp3,RORγt in peripheral blood mononuclear cell (PBMC) were detected with real time quantitative PCR.Results Compared with the control group,CD4 + CD25 + Foxp3 + Treg and CD4 + IL-17 + Th17 cell percentage,Treg and Th17 cells specific transcription factor Foxp3,RORγt expression levels in elderly laryngeal cancer patients without lymph node metastasis were significantly higher (t=9.817,P=0.018; t=12.120,P=0.009; t=6.090,P=0.023; t=7.130,P=0.028).Compared with elderly laryngeal cancer patients without lymph node metastasis,Treg and Th17 cell percentage and Foxp3,RORγt expression levels were significantly increased (t =9.070,P =0.014; t =12.140,P =0.009; t =10.130,P =0.009 ; t =13.070,P =0.008),and the ratios of Th17/Treg and Foxp3/RORγt were significantly lower (2.401 ± 0.614 vs 3.763 ± 0.959 ; 0.401 ± 0.075 vs 0.563 ± 0.091 ; t =9.070,P =0.014 ; t =11.140,P =0.007) in elderly laryngeal cancer patients with lymph node metastasis.Conclusion In elderly patients with laryngeal cancer,Treg cells and Th17 cells imbalance is positively correlated to disease progression.Therefore,monitoring and correcting the expression levels of Treg and Th17 cells may be important for the diagnosis,treatment and prognosis of the elderly patients with laryngeal cancer.

Neural stem cells are a category of cells with self-renewal and differentiation potential. Proliferation and differentiation of neural stem cells have closely relation with growth factor, cell factor, environmental signal, and so on. In recent years, evidence indicates that neural stem cells possessing multipotency naturally occur in adult brain. The found of adult neural stem cells have changed the theory that central nervous system cannot regenerative. Chinese Traditional Medicine can effectively induce adult neural stem cells to proliferate and differentiate, opening up unprecedented direction in the research for the treatment of nerve regeneration, and showing great potency for curing cerebral ischemic injury.

Acupuncture Points ; Acupuncture Therapy ; Adult ; Combined Modality Therapy ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Melanosis ; drug therapy ; therapy ; Middle Aged ; Young Adult

Adolescent ; Adult ; Angiofibroma ; radiotherapy ; Humans ; Male ; Nasopharyngeal Neoplasms ; radiotherapy ; Neoplasm, Residual ; Postoperative Period ; Young Adult

This paper reviewed the emergence process of the subject and methodology of Chinese Medicines' Authentication. Based on the research progress and major achievements acquired in research of each methodology including identification of origin, description, microscopic, physical, chemical and biological characteristics of Chinese medicines, it is expounded that the development process of each methodology combined modem digital technology, information science and its own characteristics. And the development direction is further described for methodology of Chinese Medicines' Authentication towards systematization and informationization.
Chemistry, Pharmaceutical ; history ; methods ; Drug Contamination ; prevention & control ; Drugs, Chinese Herbal ; chemistry ; history ; pharmacology ; History, 20th Century ; History, 21st Century ; Quality Control

Objective To investigate the effects of mitochondrial division inhibitor 1 (mdivi-1) in rats after cardiopulmonary resuscitation (CPR) and its mechanism.Methods Fifty Sprague-Dawley (SD) rats were randomly (random number table) divided into sham group (n =8),cardiac arrest (CA) model group (n =14),dimethyl sulfoxide post-treatment control group (DMSO group,n =14),and mdivi-1 post-treatment group (mdivi-1 group,n =14).Asphyxial CA was reproduced in animals,and they were resuscitated by CPR.In the mdivi-1 group or DMSO group,the animals were given mdivi-1 (1.2 mg/kg) or DMSO (0.1％) intravenously after restoration of spontaneous circulation (ROSC).The neurological functions were assessed using neurological deficit score (NDS) determined at 24,48 and 72 hours after CPR.The brain tissues were harvested at 72 hours after CPR.The histopathologic changes were assessed by hematoxylin and eosin (HE) staining,and the normal neuron was counted.The neuronal apoptosis was assessed with terminal dexynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining,and the expressions of cytochrome C (Cyt-C) protein in mitochondria and cytoplasm from hippocampus were determined by Western Blot.Results NDS in all experiment groups was gradually increased after CPR,and they were significantly lower than thoseo.f the sham group at 24,48,and 72 hours (51.5±3.7 vs.80.0±0.0,59.3±3.6 vs.80.0±0.0,66.7±2.6 vs.80.0±0.0,all P ＜ 0.05).The number of normal pyramidal neurons in the hippocampal CA1 region was markedly reduced (cells/HP:4.4± 1.1 vs.23.1 ± 4.0,P ＜ 0,05),the apoptotic index was significantly increased [(86.9 ± 6.9)％ vs.(3.4 ± 0.8)％,P ＜ 0.05],the expressions of Cyt-C in mitochondria were significantly decreased (A value:0.46±0.18 vs.1.00±0.00,P ＜ 0.05),and the expressions of Cyt-C in cytoplasm were significantly up-regulated (A value:6.65±0.21 vs.1.00±0.00,P ＜ 0.05).Compared with the CA group,NDS at 24 hours and 48 hours in mdivi-1 group was slightly increased (55.2 ± 3.3 vs.51.5 ± 3.7,64.7 ± 2.4 vs.59.3 ± 3.6,both P ＞ 0.05),and it was significantly increased at 72 hours (74.5±2.3 vs.66.7 ± 2.6,P ＜ 0.05),the number of normal pyramidal neurons in the hippocampal CA1 region was markedly increased (cells/HP:16.2±2.4 vs.4.4± 1.1,P ＜ 0.05),the apoptotic index was dramatically reduced [(42.3 ± 3.9)％ vs.(86.9 ± 6.9)％,P ＜ 0.05],the expressions of Cyt-C in mitochondria were significantly increased (A value:0.83 ± 0.22 vs.0.46 ± 0.18,P ＜ 0.05),and the expressions of Cyt-C in cytoplasm were significantly decreased (A value:3.84±0.47 vs.6.65±0.21,P ＜ 0.05).There was no statistically significant difference in above indexes between CA group and DMSO group.Conclusion By inhibiting mitochondrial Cyt-C apoptotic pathway to reduce neuronal apoptosis in rats after CA-CPR,mdivi-1 can improve brain function after CPR.

The main objective of this research is to investigate the effects of astragaloside IV, calycosin separately glucoside, formononetin on oxidative stress in Chang Liver cells induced by H2O2. In the experiments, Chang Liver cells (a kind of normal human hepatocytes) were used as the research object, bifendate which has a clear hepatoprotective effect was used as the positive control drug, then the oxidative damage model of Chang Liver cells were established by H2O2. Cells were divided into six groups: blank control group, oxidative stress group, astragaloside IV group, calycosin separately glucoside group, formononetin group and positive control group. Then endogenous antioxidant system related indexes were detected by micro plate and colorimetric method; intracellular reactive oxygen species (ROS) were detected by DCFH-DA fluorescent probe; and the expressions of CYP2E1 were evaluated by liver microsomes, mRNA, and protein, respectively with spectrophotometry, Real-time PCR method, and Western blot technique. Results showed that H2O2 decreased antioxidant activity, and increased ROS level and expression of CYP2E1. The above oxidative stress status had been changed with protections of the three components of Astragalus membranaceus (compared with oxidative stress group, P < 0.05, P < 0.01), which taken as a whole had equivalent effects as the drug of positive control group( bifendate). Taken together, three Astragalus membranaceus ingredients all had significant or extremely significant inhibiting effects on oxidative damaged Chang Liver cells which were induced by H2O2, and the oxidative damage of Chang Liver cells had been relieved.
Astragalus membranaceus ; chemistry ; Cells, Cultured ; Cytochrome P-450 CYP2E1 ; metabolism ; Humans ; Isoflavones ; pharmacology ; Liver ; drug effects ; Oxidative Stress ; drug effects ; Reactive Oxygen Species ; metabolism ; Saponins ; pharmacology ; Triterpenes ; pharmacology

OBJECTIVE To investigate the pathogenic causes of lower respiratory tract infections(LRTIs) in the elderly in Guangzhou area.METHODS Pathogens obtained from 107 patients with LRTIs were performed by multiple diagnostic tools that including bacterial culture,PCR and specific immunological assays.RESULTS A bacterial cause was established in 42(68.5%) and an atypical pathogen cause in 25(31.6%) of the 107 patients.Mycoplasma pneumoniae and Haemophilus influenzae remained the most important pathogens for LRTIs.CONCLUSIONS In the prescription of antibiotics in the elderly with LRTIs,not only bacteria but also atypical pathogens should be taken into account.

Objective To investigate the effects of Morroniside on H2O2-induced oxidative injury in SH-SY5Y neuroblastoma cells.MethodsSH-SY5Y cells were pre-incubated with Morroniside(1,10,and 100 μmol/L)for 24 h prior to exposure to H2O2(500 μmol/L)for 18 h.The content of reactive oxygen species(ROS),nitric oxide(NO),glutathione(GSH)were determined.ResultsPretreatment the cells with Morroniside(10 and 100 μmol/L)lowered H2O2-induced ROS release by 37%(P<0.01)and 27%(P<0.05)versus H2O2,and NO release in a dose-dependent manner by 31%(P<0.05),53%(P<0.01)versus H2O2.Morroniside(1,10,and 100 μmol/L)increased GSH level in cells treated with H2O2 in comparison with cells exposed only to H2O2,respectively.ConclusionMorroniside shows neuroprotection effect against H2O2-induced oxidation injury in SH-SY5Y cell.