Nuclear factor erythroid-2 related factor 2 ( Nrf2 ) is an important nuclear transcription factor which protects cells a-gainst oxidative stress injury. Upon exposure to reactive oxygen species ( ROS) or electrophilic stress, Nrf2 can translocate into the nucleus, and then bind to the antioxidant response element ( ARE) , regulating the expression of several antioxidant enzymes and phase Ⅱ detoxifying enzymes which aimed at the detoxifica-tion and elimination of harmful exogenous chemicals, resulting in the facilitation of hepatoprotection. Oxidative stress is the com-mon pathogenesis of many liver diseases, while the Nrf2-ARE signaling pathway is extremely important in the prevention and progression of many liver diseases. Nrf2 has more recently been implicated as a new therapeutic target in treating liver diseases. Here, we focus on the most common liver diseases and the devel-opment of these conditions where activation of Nrf2 may alleviate disease progression, so as to provide reference for related re-search in the future.

ObjectiveTo observe the effe ct of varnish“Fangyouling” preventing skin invasion from Schist osoma cercariae. MethodsThe“Fangyouling” was made from niclo s amide and permeable improver, and the concentration of the drug was 1%-2%. Exper imenta l mice and rabbits were spread with “Fangyouling” on the abdomen skin without h air at day 1,2,3,4,5,6,7 respectively before infection, compaired with cont rol group. ResultsThe worm reduction rates of mice which were spread with drug 1-4 days and 5-7 days before infection were 100 % and 99 7%-88 1%. The worm reduction rates of rabbits which were spread with dr ug 3-7 days before infection were 86 4%-80 1%. ConclusionThe“Fangyouling” has long efficiency on preventing Schistosoma cercariae from invading skin.

Objective To study the effect o f levamisole against the invasion of Schistosoma japonicum cercariae. Methods Mice infected wit h Schistosoma cercariae were administered orally with levamisole hydrochloride or alkali levamisole two days before the infectio n at a dose of 26.25 mg/kg for 7 days. The liniments of levamisole hydrochlorid e and alkali levamisole were embrocated on the mouse skin two days, one day and 0 day before the infection respectively, and the concentrations of the drug were 1%, 2%, 3%, 5% and 7% respectively. The experimental animals were dissected 4 we eks after the treatment and adult worms were collected. Results The worm reduction rates of mice administered orally with leva misole hydrochloride or alkali levamisole were both 0. The worm reduction rates were both 100% when the mice were embrocated with 5% levamisole hydrochloride on the infection day or with 7% levamisole hydrochloride one day before the infect ion. The worm reduction rates were all 100% when the mice were embrocated with 2 %, 3% or 5% alkali levamisole one day before the infection. Conc lusions Levamisole liniments can prevent from S . japonicum cercaria infection, and alkali levamisole is better th an levamisole hydrochloride. When levamisole is given orally, no effect was show n.

Objective To investigate changes in the expression of apurinic/apyrimidinic endonuclease (APE) and the oxidative DNA damage marker 8 OHdG in distant hippocampus regions of the rat brain after focal cerebral ischemia of the middle cerebral artery.Methods SD rats were divided into the sham surgery group and the pMCAO group (induced by middle cerebral artery occlusion).Pathological changes in brain tissues were examined at 2 h,6 h,12 h,24 h,48 h and 72 h.The expression of APE and 8-OHdG was measured by immunohistochemical staining methods.TUNEL staining was performed to detect apoptosis.Results Reduction of APE expression in the CA1 region of the hippocampus on the ischemia side appeared at 2 h in the pMCAO group and continued as ischemia persisted (F=11.91,P＜0.05).The expression of 8OHdG and TUNEL immunoreactivity in the CA1 region of the hippocampus on the ischemia side were first observed at 6h in the pMCAO group and intensified during the remainder of induced ischemia (F=9.23 and 10.46 respectively,P＜0.05 for both).Compared with the sham group,8-OHdG expression and TUNEL immunoreactivity in the pMCAO group were at nearly the same levels from 24 h to 72h.Conclusions Oxidative DNA damage occurs in hippocampus regions of the rat brain after experimentally induced focal cerebral ischemia of the middle cerebral artery.APE expression declines in regions distant from focal cerebral ischemia.Development and accumulation of oxidative DNA damage can induce apoptosis in certain brain regions.

Objective To investigate the effects of lipopolysaccharide(LPS) on the tryptophan-kynurenine(TRP) metabolic pathway in rat brains and provide new evidence for the relationship between inflammation and depression.Methods Rats in LPS group were given a single dose of 3.5 mg/kg LPS.while the rats in control group were given the same dosage of saline.The dialysis in ventro-hippocampus were collected by microdialysis within 8 hours and then the TRP,KYN and KA were detected by LC-MS/MS.And the expression of indoleamine 2,3-dioxygenase was detected by Western-blot.Results The level of TRP((550.15± 107.96) pmol/L) and KYN ((337.95±62.73) pmol/L) showed a time-dependent increase after administration LPS 4 h compared with the control group(TRP (368.38±59.31) pmol/L,KYN (172.80±43.96) pmol/L),while KA level in the circulation exhibited a trend to decrease,especially at 7 h ((3.47±0.62) pmol/L,P＜0.05).The ratio of KYN/TRP significantly increased at about 5 h (0.69±0.11,P＜ 0.05),and an ratio of KA/KYN (0.02±0.00) was dramatically decreased after administering LPS 4 h compared with the control group (0.05±0.01)(P＜0.05).Most of the analytes showed more dramatic changes around 4 h to 8 h.LPS group(1.48±0.37) increased the protein expression of indoleamine 2,3-dioxygenase compared with the control group(1.00±0.24) (P＜0.01).Conclusions LPS may cause tryptophan metabolic abnormalities and accelerate the way of kynurenine metabolism,leading to decreased the kynurenic acid status.

Objective To evaluate the efficacy of the combination interventional oviduct recanalization with traditional chinese medicine for infertile women with oviduct obstruction.Methods 38 cases with 76 oviduct obstruction were treated with FTC-900 oviduct recanalization apparatus guided with DSA,the apparatus was supplied by COOK company,before recanalization,assisted with side fornix vaginae and enema with traditional chinese medicine.Results Of 76 obstructive oviduct,71 oviduct were recanalization,the successful rates of recanalization were 93.4%;Of 38 infertile women ,25 cases become pregnant,the pregnant rates were 67.3%;Of 13 unsuccessful cases,8 cases turn out re-obstructived.Conclusion Combination interventional oviduct recanalization with traditional chinese medicine for infertile women with oviduct is a simple,safe,and more effective method,it has a high successful rates than either method solely,should be spreaded.

Objective To comparatively analyze Toxoplasma gondii separated from HIV-positive people and RH strain GRA6 gene. Methods By using the nested PCR the amplification of Dali HIV-positive blood samples and RH strains of Toxo-plasma GRA6 genome was performed. The GRA6 gene amplification positive product was selected and the electrophoresis imag-ing was performed by being digested with the Mse I endonuclease and the gene sequences were measured and analyzed. Re-sults The GRA6 gene fragment 800 bp was successfully amplified and about 600 bp and 200 bp bands were got by Mse I. The sequencing results showed that T. gondii GRA6 gene positive samples had 2 nucleotide variation compared with T. gondii strain RH namely 447 base pair at C becoming G and 623 base pair at G becoming T. At 146 bp and 690 bp the Mse I restric-tion sites TTAA were found. Conclusion The preliminary judgment shows that the Dali HIV-positive T. gondii genotype is consistent with RH strain belonging to genotype I.

BACKGROUND:Liquiritin has the protective and nutritive effects on neural stem cells. However, the effect of liquiritin on neural stem cells from the brain of mouse embryos remains unclear. OBJECTIVE:To investigate the effects of different concentrations of liquiritin on the proliferation of neural stem cells from the brain of mouse embryos. METHODS:Neural stem cells were separated from the embryonic brain of Kunming white mice at the gestational age of 14 days. The identification of embryonic neural stem cells was performed by immunocytochemistry method. The expression of neural stem cells-special genes was determined by qRT-PCR. The cell growth curve was drawn and proliferation of embryonic neural stem cells treated with 0, 1, 2, 4 or 8 g/L liquiritin for 48 hours was measured by MTT assay. RESULTS AND CONCLUSION:(1) When cultured at day 5, al individual neural stem cells gathered together into neurospheres; with the extension of time, the neurospheres were enlarged, and gathered together into larger cell masses. (2) Results from immunocytochemistry showed that all the floating neurospheres was nestin-positive. Data from qRT-PCR revealed a higher expression of nestin mRNA, but there was no expression of neuron-specific enolase and glial fibrillary acidic protein in the neural stem cells. (4) The growth of neural stem cells was slow at the beginning. After 2-3 days, the cell proliferation quickly entered the exponential phase. After 4 days, the cell proliferation gradually slowed down, and the overall cell growth entered into the platform period. (5) The cell proliferation after treatment with 2, 4 or 8 g/L liquiritin was faster than that in the control group (0 g/L). To conclude, 2-8 g/L liquiritin could increase the proliferation of neural stem cells from the brain of mouse embryos.

BACKGROUND: Salvianolic acid B can ease nerve injury and promote neurogenesis, but its effects on proliferation,apoptosis and differentiation of neural stem cells in the hippocampus remain unclear.OBJECTIVE: To study the effects of salvianolic acid B on proliferation, apoptosis and differentiation of rat hippocampal neural stem cells following oxygen-glucose deprivation.METHODS: Hippocampal neural stem cells were isolated from newborn Sprague-Dawley rats, and divided into six groups, five of which were cultured in an incubator containing anaerobic mixtures (1% O2, 5% CO2 and 94% N2) for 150minutes followed by treatment with different concentrations of salvianolic acid B (0, 5, 10, 20, 40 mg/L), respectively.After 4 days of intervention, MTT was used to detect cell proliferation. After 48 hours of intervention, flow cytometry was used to detect cell apoptosis in the hippocampus. After 5 days of culture, flow cytometry was performed to evaluate the percentage of cells positive for neuron-specific enolase and glial fibrillary acidic protein. Normally cultured cells acted as controls (normoxic group).RESULTS AND CONCLUSION: Compared with the normoxic group, the proliferation of neural stem cells was decreased significantly (P < 0.01) and the rate of apoptosis was increased in the oxygen-glucose deprivation group (P <0.01). After treatment with different concentrations of salvianolic acid B, the cell viability and the ratio of neurons in total cells were increased, and the ratio of astrocytes was decreased, especially in 20 and 40 mg/L groups (P < 0.01). In conclusion, these results suggest that salvianolic acid B alleviates adverse effects of oxygen-glucose deprivation on neural stem cell proliferation, differentiation and apoptosis.

Objective To investigate the combined inhibition effect and the potential mechanism of rapamycin (mammalian target of rapamycin inhibitor) and PD98059 (mitogen-activated protein kinase/extracellular signal-regulated kinase kinase (MEK) inhibitor) on mouse colorectal cancer (CRC). Methods S-ICR mice were subcutaneously injected with 20 mg/kg of 1,2-dimethylhydrazine dihydrochloride in the nape for 20 weeks to induce CRC. From the 16th week, the mice were treated with alone or combined injection with 0.25 mg/kg rapamycin and 2.5 mg/kg PD98059. The drugs were administered for 8 weeks. Subsequently, the animals were sacrificed and dissected, the tumor sizes were measured, and the tumors were harvested for pathological assay. Furthermore, the phosphorylation of mTOR, p70S6K, and 4E-BPl proteins was detected by using immunohistoehemistry. Results The mice treated with rapamycin (44. 44 %) or PD 98059 (either alone (38.89%) or combination treatment (6.67%) were significantly less likely to develop cancer compared with mice receiving none of them (77.78%, P<0. 05). The average size of tumors was (6.15±2. 192), (8.85±3. 983), (2.917±0. 191), (16.36±6.855) mm3 respectively (P<0.05).The anti-cancer effect of the combination treatment was substantially significant. The proteins of phospho-mTOR, phospho-p70s6K and phospho-4E-BPl were significantly down-regulated after treatments (all P values < ,0.05). Conclusions Combined treatment was more effective than single-drug treatments of rapamycin or PD98059 alone for the prevention and treatment of mouse CRC. The mTOR signal pathway might be involved in the inhibitory mechanism.