Objective To review the neuron synaptic plasticity in hioppocampus in the pathogenesis of depression in present studies,and expected to provide reference and basis for study of depression in clinic and model.Methods The wordsdepression, antidepression, chronic unpredictable stimulate, hippocampus, synapse,plasticity were used as index words.Analysis the relationship of depression or antidepression and synaptic plasticity in hippocampus from the results of researches enrolled at home or abroad.Summarize the effect of neuron synaptic plasticity in hioppocampus in the pathogenesis of depression.Result Totally 37 articles enrolled.They show the onset of depression or antidepressant processes always combine with the damage or recover of neuron synaptic plasticity.Conclusion The reduction or damage in synaptic plasticity in hippocampus is likely to be the pathogenesis of depression,like the changes of function or expression of SYN-1,MAP-2,SYT-1,PSD-95 or any other synapse-associated proteins.Meanwhile,studies of using enrich environment to treat depression indicated that depression is likely related to the synaptic plasticity in hippocampus in another way.But who are the synapse-associated proteins related to synaptic plasticity in depression? How to design the enrich environment.? These still need further study.

Objective To observe the postconditioning cardioprotective effects of atorvastatin (ATV) on ischemia-re?perfusion injury in isolated rat heart, and the role of phosphatidylinositol-3-kinase , protein kinase B(PI3K-Akt), mitochon?drial ATP-sensitive potassium (mito-KATP channel) and mitochondrial permeability transition pore (mPTP) thereof. Meth?ods Healthy male Wistar rats were randomly divided into 9 groups:ischemia reperfusion (I/R) control group, atorvastatin postconditioning (ATV) group, ATV plus PI3K inhibitor LY294002 (ATV+LY294002) group, LY294002 group, ATV plus mi?to-KATP channel inhibitor 5-hydroxydecanoate (ATV+5-HD) group, 5-HD group, ATV plus mPTP inhibitor ATR (ATV+ATR) group, ATR group and ethanol group. Model rats were given 30-min ischemia followed by 120-min reperfusion. The myocardial infarction size, hemodynamic parameters, creatine kinase isoenzyme (CK-MB), lactate dehydrogenase (LDH), nic?otinamide adenine dinucleotide (NAD+) and the expression of myocardial protein kinase B (Akt) and myocardial phospho-pro?tein kinase B (p-Akt) were evaluated. Results Compared with the control group, atorvastatin reduced the myocardial in?farction size, CK-MB and LDH(P<0.05), increased NAD+(P<0.05). There were no significant differences in the myocardi?al infarction size, CK-MB, LDH and NAD+between ATV+LY294002 group, ATV+5-HD group and ATV+ATR group. The hemodynamic parameters were improved in ATV group compared with those in control group. Western blot analysis con? firmed the significant phosphorylation of Akt in ATV group, ATV+5-HD group and ATV+ATR group compared with those of control group. There were no significant differences in the phosphorylation of Akt between ATV +LY294002 group, LY294002 group, ATR group and 5-HD group. Conclusion Atorvastatin postconditioning could attenuate the ischemia-re?perfusion injury through activating the PI3K-Akt, promoting mito-KATP channel opening and inhibiting mPTP opening.

Objective: To observe the clinical efficacy of combining two needling manipulations, Er Long Xi Zhu (two dragons playing with a pearl) and Guo Yan Re (heat produced to reach the eyes), in treating dry eye syndrome (DES) of lung-yin deficiency pattern. Methods: Fifty-six eligible DES patients of lung-yin deficiency were randomized into an observation group and a control group, with 28 cases in each group. Same acupoints were selected in the two groups: Cuanzhu (BL 2), Sizhukong (TE 23), Taiyang (EX-HN 5) and Fengchi (GB 20) were chosen as the major points and Feishu (BL 13) and Chize (LU 5) as the adjuvant. Er Long Xi Zhu and Guo Yan Re needling manipulations were applied in the observation group while twirling reinforcing manipulation was used in the control group. Treatment was conducted once per day in both groups, for two sets of 15 consecutive days at a 2-day interval. Changes in the symptom score, tear break-up time (BUT) and tear production were observed afterwards, and the clinical efficacy was also compared between the two groups. Results: The total effective rate was 92.8％ in the observation group, higher than 71.4％ in the control group, and the between-group difference was statistically significant (P<0.05). After treatment, the symptom score, tear BUT and tear production showed significant improvements in both groups (all P<0.05); the symptom score, BUT and tear production in the observation group were significantly different from those in the control group (all P<0.05). Conclusion: Given the same acupoint selection, combining Er Long Xi Zhu and Guo Yan Re needling manipulations can produce more significant clinical efficacy than twirling reinforcing manipulation in treating DES of lung-yin deficiency pattern.

Metabolic engineering provide powerful tools for the systematic manipulation of cellular metabolic activities. The ptsG gene for glucose-specific transporter Enzyme II CBGlc of the phosphotransferase system was knock-out so as to reduce the accumulation of acetic acid in the high cell-density culture of Escherichia coli on excess glucose. The chloramphenicol-resistant cassette with short shared sequences on both ends generated by PCR was electroporated into Escherichia coli DH5alpha and JM109. Recombination between linear DNA cassettes and Escherichia coli chromosomes took place by Red recombinase functions. Therefore, the ptsG gene was disrupted to construct the mutants called DH5alphaP and JM109P. There was no difference between the mutants and parent strains in LB media.However, in LB media supplemented with glucose, the mutants of Escherichia coli deficient in ptsG showed greater biomass, together with exploiting more glucose. The maximal cell density obtained with DH5alphaP was approximately 3 times more than that of DH5alpha, then the result of JM109P increased fourfold. The products of recombinant protein TNF respectively accounted for 24.3% of total cellular protein in DH5alphaP with A600 8.28 and 20.8% of total cellular protein in JM109P with A600 7.62. The specific volume expression amount of TNF was greater in the ptsG mutant than in its parent strain. These results demonstrate that the ptsG-mutant strains will be available for high cell-density culture.
Culture Media ; Escherichia coli ; genetics ; growth & development ; Fermentation ; Mutation ; Phosphoenolpyruvate Sugar Phosphotransferase System ; genetics ; Polymerase Chain Reaction ; Recombinant Proteins ; biosynthesis ; Tumor Necrosis Factor-alpha ; biosynthesis

Objective To investigate the effects of intervention with the fluoxetine and the enriched environment on chronic stress induced depression behavior of rats,and the changes of myelin basic protein in hippocampus and prefrontal regions.Methods 50 adult male SD rats were randomly divided into control group,fluoxetine group,model group,enriched environment (EE) group and EE plus fluoxetine group.Fluoxetine group,model group,EE group and EE plus fluoxetine group underwent chronic unpredictable stress stimulus in the first to third week,and fluoxetine group,EE group,EE plus fluoxetine group underwent the intervention with EE and (or) fluoxetine in the fourth to sixth week.The changes of behavior in rats were evaluated by sucrose water consumption,open field test and weight changes.The content of MBP in each subregion of hippocampus and prefrontal regions of rats was measured with immunocytochemical methods.Results At the third weekend,the assessed behaviors of stressed rats decreased significantly compared with control group (P＜0.05);and at the sixth weekend,the behaviors of stressed rats restored after treated with EE and (or) fluoxetine.The content of MBP in the rat hippocampus CA1,DG area and prefrontal area of model group declined clearly compared with control group (mean density of model group orderly:0.199±0.024,0.204±0.021,0.225±0.028;control group orderly:0.279±0.034,0.288±0.043,0.308±0.053,P＜0.05).The content of MBP in the rat of fluoxetine group,EE group and EE plus fluoxetine group increased obviously compared with model group (fluoxetine group orderly:0.259± 0.047,0.266± 0.052,0.284 ± 0.031;EE group orderly:0.257±0.038,0.258±0.042,0.286±0.037;EE plus fluoxetine group orderly:0.271± 0.046,0.279±0.040,0.289±0.041,P＜0.05).Conclusion The depression-like behavior of rats induced by chronic unpredictable stress is associated with the change of the content of MBP in hippocampal CA1,DG area and prefrontal area;and the depression-like behavior and the content of MBP decrease are reversed after the intervention with fluoxetine and EE.

Objective To study the correlation between serum homocysteine ( Hcy ) level and C677T polymorphism of methylenetetrahydrofolate reductase ( MTHFR ) gene C677T polymorphism ( rs1801133) in patients with cerebral infarction, and feature of rs1801133 polymorphism and serum Hcy level in cerebral infarction patients with or without diabetes mellitus.Methods Case-control study.Five hundred and fifty six patients with cerebral infarction admitted to China-Japan Friendship Hospital from January 2014 to January 2015 were included as the case group while 275 subjects from medical examination center without cerebral infarction and diabetes mellitus matched with the case group.MTHFR C677T polymorphism was determined by pyrosequencing and serum Hcy was determined by circulating enzymatic.Chi-square test was used to analyze the distribution of genotype in different group; ANVOA was used to analyze the Hcy level with different genotype in patients with cerebral infarction, and LSD-t was used to pairwise comparison.Results Among the 556 patients with cerebral infarction ,TT genotype were 202 cases (36.33%), CT genotype were 257 cases(46.22%), CC genotype were 97 cases(17.45%).The T allele 44%, higher than the control group T allele frequencies 46.91%(χ2 =23.385,P<0.001).The level of TT genotype serum Hcy level (21.31 ±17.31) μmol/L were higher than CT genotype (14.88 ±7.71) μmol/L(P<0.001)and CC genotype(14.48 ±7.78) μmol/L(P<0.001).There is no significant statistics different in TT genotype frequency between Cerebral infarction patients with diabetes mellitus(36.77%) and without diabetes mellitus(36.44%) (χ2 =0.031,P>0.05), while the level of serum Hcy in Cerebral infarction patients with diabetes mellitus ( 18.16 ±12.90 )μmol/L is lower than Cerebral infarction patients without diabetes mellitus(23.47 ±19.53) μmol/L in TT genotype( F=4.652, P<0.05).Conclusions MTHFR TT genotype was related to serum hyperhomocysteine, and maybe save as the risk of cerebral infarction.The Hcy level in TT genotype cerebral infarction patients with DM is lower than the same genotype patients without DM.(Chin J Lab Med, 2016, 39:205-209 )

Aim To investigate the effects of cholecystokinin-octopeptide on IL-12 secreted in murine bone marrow-derived dendritic cells induced by lipopolysaccharide.Methods The CCK receptor subtypes were investigated by immunofluorescence in murine bone marrow-derived dendritic cells.Enzyme linked immunosorbent assay and Western blot were used to estimate the contents of IL-12 and p38MAPK activity.Results CCK-1R and CCK-2R were detected in BM-DC;CCK-8(at concentrations of 10-10,10-8,10-6 mol?L-1)could significantly increase the secretion of IL-12 in the LPS-induced DC, and LPS-activated p38MAPK activity in a dose-dependent manner.The effect of CCK-8 was reduced partially by CR1409(a CCK-1R antagonist) and CR2945(a CCK-2R antagonist).Conclusion CCK-8 could dose-dependently increase the expressions of IL-12 in LPS-induced DC,probably by promoting p38MAPK activity and the effect was mediated by CCK1 and CCK2 receptors.

OBJECTIVE To observe the effects of Dexamethasone on the expression of cyclic nucleotide-gated channels (CNG channels) mRNA of olfactory receptor neurons (ORNs) by real-time quantitative reverse transcription-polymerase chain reaction(RT-PCR). METHODS Forty Wistar rats were randomly divided into four groups: 24-hours Dexamethasone treated group and its control group; 2-weeks Dexamethasone treated group and its control group. Dexamethasone was injected i.p. (1 mg/kg for 24-hours group, 0.2 mg/d for 2-weeks group). Control group rats were injected with the same volume of normal saline. Real-time quantitative RT-PCR was performed to evaluate mRNA production of CNGA2 subunits. RESULTS In Dexamethasone-injected rats, the up-regulation of CNGA2 mRNA was observed in 2-weeks group(P

The HPLC-MS/MS method was developed to profile the dynamics of abscisic acid (ABA) and ABA-glucose ester (ABA-GE) after cloning glycosyltransferase enzyme family gene AtUGT71C5 into Arabidopsis thaliana. By constructing over-expression lines (OE) and down-expression lines (DN), we acquired mutant strains to analyze the function of AtUGT71C5. The multiple-reaction monitoring (MRM) was used for quantitative determination in negative mode. The transition was m/z 263.1-153.0 for ABA ([M-H]t), m/z 425.1-263.0 for ABA-GE ([M-H]t), and m/z 321.0-152.0 for chloramphe-nicol. The linear range was 0.8684-217.1 ng/mL for ABA and 0.3920-196.0 ng/mL for ABA-GE. The accuracy was 88.0-109.0% for ABA and 86.6-113.0% for ABA-GE; the inter-day and intra-day precisions were less than 5.4%for ABA and 8.9%for ABA-GE, respectively. This method is simple and sensitive enough for determination of ABA and ABA-GE in A. thaliana leaves. All the evidence confirmed the speculation that AtUGT71C5 can mediate abscisic acid homeostasis.

Objective To investigate the effect of enriched environment (EE) on behavior and expression of mitogenactivated protein kinase phosphatase-1 (MKP-1) in hippocampus of depression rats induced by chronic unpredicted mild stress (CUS) and to provide clues for the molecular mechanism of treating depression.Methods Forty Sprague-Dawley rats were randomly divided into control group,CUS group,fluoxetine group and EE group,with 10 rats in each group.The rats in CUS group,fluoxetine group and EE group were given 8 weeks of CUS,and from the fifth week,the rats in EE group and fluoxetine group were given EE and fluoxetine for 4 weeks,respectively.The changes of behavioristic of the rats in the four groups were evaluated by body mass gain,open field test,and sucrose preference.The expression of MKP-1 in hippocampus was detected by Western blot.Results There was no significant difference in body mass,distance of horizontal movement,the number of upright,the times of passing through the grid and sucrose preference index among the four groups(P ＞ 0.05).After modeling,compared with the control group,the body mass gain,distance of horizontal movement,the number of up-right,the times of passing through the grid and sucrose preference index in the CUS group,fluoxetine group and EE group were decreased significantly(P ＜ 0.05);there was no significant difference in the body mass gain,distance of horizontal movement,the number of up-right,the times of passing through the grid and sucrose preference index among the CUS group,fluoxetine group and EE group(P ＞ 0.05).After intervening by fluoxetine and EE,the body mass gain,distance of horizontal movement,the number of up-right,the times of passing through the grid and sucrose preference index in the CUS group were lower than those in the control group(P ＜0.05);but there was no significant difference in the body mass gain,distance of horizontal movement,the number of up-right,the times of passing through the grid and sucrose preference index between the control group and the fluoxetine group and EE group(P ＞ 0.05).Compared with the CUS group,the body mass gain,distance of horizontal movement,the number of up-right,the times of passing through the grid and sucrose preference index in the fluoxetine group and EE group were higher(P ＜ 0.05);there was no significant difference in the body mass gain,distance of horizontal movement,the number of up-right,the times of passing through the grid and sucrose preference index between the fluoxetine group and EE group (P ＞ 0.05).The expression of MKP-1 in hippocampus of CUS group and EE group was higher than that in the control group (P ＜0.05).There was no significant difference in the expression of MKP-1 in hippocampus between the fluoxetine group and control group(P ＞ 0.05).Compared with the CUS group,the expression of MKP-1 in hippocampus in the fluoxetine group decreased (P ＜ 0.05).There was no significant difference in the expression of MKP-1 in hippocampus between the EE group and CUS group(P ＞0.05).Compared with the fluoxetine group,the expression of MKP-1 in hippocampus in the EE group was higher(P ＜ 0.05).Conclusion EE can significantly improve depressive symptoms in rats,but it has no significant effect on MKP-1 protein expression in hippocampus,and EE may not act on depression by affecting MKP-1.