Objective To investigate the mechanism of orotic acid-induced fatty liver in rats. Method Rats were randomly divided into 2 groups,and fed AIN93 diet with or without 1% orotic acid (OA) for 10d. Serum total cholesterol (TC),triglyceride (TG),high density lipoprotein-cholesterol (HDL-C),hepatic lipids concentrations (TG,TC and phospholipids),hepatic enzymes activities and mRNA levels of key enzymes related to lipids metabolism,as well as hepatic genes expression of transcription factors were determined. Results OA administration significantly increased serum and hepatic TG concentration. The activity and mRNA level of fatty acid synthase (FAS) were obviously up-regulated by OA treatment,whereas the activities and mRNA concentrations of carnitin palmitoyl transferase (CPT) and microsomal triglyceride transfer protein (MTP) were depressed significantly. Furthermore,OA also stimulated the mRNA expression of sterol regulatory element binding protein-1c (SREBP-1c),but did not alter the mRNA concentrations of peroxisome proliferator-activated receptor alpha (PPAR?) in liver. Conclusion:The stimulation of TG synthesis caused by enhancement of SREBP-1c and its target genes-FAS,which could be responsible for development of fatty liver. On the other hand,the inhibition of fatty acid beta-oxidation and VLDL secretion were related to the observed lipids accumulation.

ObjectiveTo determine the current students' social anxiety status and maternal factors in school students( grade 5-7) in Harbin,and provided scientific guidance relevant to students'social anxiety.Methods 1526 mother-child pairs collected by random cluster sampling,children completed the social anxiety scale for children (SASC),security scale,coping strategies questionnaire( consist of ambivalence and avoidance subscale),acceptance scale and psychological control scale,and mothers completed the center for epidemiologic studies depression inventory (CES-D),self-rating anxiety scale (SAS).ResultsThe total positive detection rate of social anxiety was 13.6％,there was no significantly difference between boys and girls (P ＞ 0.05) ; the positive detection rate of Grade 6 was higher than Grade 5 and Grade 7.There were positive correlation between social anxiety and mother's psychological control,mother's depression,mother's anxiety ( r =0.228,0.143,0.122) ; negative correlation with mother's acceptance( r =-0.214).Linear regression indicated that only three variables (mother's psychological control,mother's acceptance,mother's depression) were at the P ＜ 0.05 level.The regression coefficients for the three variables were 1.557,- 1.092 and 0.040,respectively.ConclusionMaternal highly psychological control,lowly acceptance and maternal anxiety depression all play a role in promoting the occurrence of students' social anxiety.

0.05).Conclusion:The abnormal expression of HLA-G protein in eutopic and ectopic endometrium tissues may play a key role in the pathogenesis of adenomyosis.

Objective To study and analyze the clinical effect of valsartan on chronic pulmonary heart disease. Methods 100 cases of heart failure patients with pulmonary heart disease treated in our hospital from January 2015 to October 2016 were selected and randomly divided into the control group and the experimental group,50 cases in each group.Two groups of patients were given the basic treatment of diuretics,low salt diet, digitalis and nitrates,so as to ensure that the patients had enough rest.Patients in the control group were treated with benazepril,and the patients in the experimental group were treated with valsartan.The clinical indexes of the experimental group and the control group were compared and analyzed. Results After corresponding treatment,the number of effective treatment was 48 cases.In the control group,the total effective number was 41 cases. The effective rate of the control group (82.0％) was significantly lower than the experimental group(96.0％) (P<0.05).The incidence of adverse reactions in the experimental group was 8.0％, and the fatality rate was 10.0％. The incidence of adverse reactions in the control group was 10.0％, and the fatality rate was 12.0％.There was no significant difference between two groups.After treatment,the indexes of LVEDD and LVESD in the experimental group were better than those in the control group,with statistical significance(P<0.05).Conclusion Valsartan was effective in the treatment of chronic pulmonary heart disease with heart failure.It can improve the treatment efficiency and security in a certain extent,and has the significance of further popularization and application.

Objective To investigate the influencing factors and improve potency methods of chymosin, to verify the stability and applicability of the national standard of chymosin.Methods The effects of different formula milk powder substrate and enzyme concentration on the determination of the activity of chymosin were studied.3 ×3 dose-response parallel line method was established.The results were compared with the different methods of absolute and relative methods.Results The different formula milk powder had a significant effect on the determination of the absolute potency of the activity of chymosin.The concentration of the enzyme was a power function relationship with the milk clotting time.Compared with the absolute potency, reproducibility of the relative potency of the results was better in different laboratories.The suitable doses in 3 ×3 dose-response parallel line method were 0.35,0.44,0.55U/mL.The confidence limit rate was less than 5%.The potency of the national standard of chymosin (140712-201302) was not significantly different between 2013 and 2015.In a certain dose range, the dose-response of the national standard of chimosin and gastropylor complex or lamb'tripe extract was linear, and the two lines were parallel.Conclusion A lot of factors can affect on the potency of chymosin.Relative potency is determinate by reference standard which can eliminate the influence of different substrates, different operators and endpoint judgment on the determination in order to make results have comparability between laboratories.The test design of 3 ×3 dose-response parallel line can control the test deviation better than the single point determination.The stability of the national standard of chymosin(140712-201302) is good, and is suitable for the potency of chymosin of the products of gastropylor complex and the extract of the lamb.

ObjectiveTo study the effect of early rehabilitation on disability of motion and cognition.Methods107 patients were randomly divided into two groups,rehabilitation group (51 cases) and control group (56 cases).Patients in rehabilitation group were given regular early rehabilitation,while all patients in both groups were given usual clinical treatment. The Barthel Index (BI), Fugl-Meyer Assessment (FMA), Mini-mental Status Examination (MMSE) were used to evaluate these two groups before and 3 months after treatment. ResultsAfter treatment, the scores of BI, FMA and MMSE were improved significantly(P<0.05) in rehabilitation group compared with that before treatment, so did that of BI, FMA in control group(P<0.05).The scores of BI、FMMS、MMSE in rehabilitation group improved significantly compared with that in control group(P<0.05).ConclusionEarly rehabilitation may obviously improve the motive and cognitive function and increase the quality of living of hemiplegia after stroke.

Objective To explore the survival mechanism of hippocampal ne urons after damage of hypoxia-ischemia and reperfusion of brain.Methods Seven days old SD rats(n=56) were randomly divided into hypoxia-ischemia br a in iniury(HIBD) group and sham group.The HIBD and reperfusion model was establis hed.The flowing of blood was de tected by multicolor Doppler.The p-CREB(phosphorylated c-AMP response element bi nding protein)and c-Jun were immunohistochemically evaluated in hippocampus.Thi onin staining was used to observe the apoptosis.Results The expression of p-CREB reache d the peak at 3,24 h postreperfusion in the right hippocampus of HIBD group,and then decreased to the normal level on the 7th day.In contral group the same reg ions showed basic immn-noreactivity.While c-Jun reached the peak at 6 h postreperfusion,then with a slightly decrease at 24 h;and at 48 h the other peak appeared,then with a gradual decline .On the 7th day the mumber of positive cells were still significanthy more than control group(P0.05).The sham animal showed very few apoptosis cells in the regio ns of hippocampus.Conclusions The persistent activation of CREB in the hippocampus regulates,the expression of c-Jun through the signal transductions and is involved in the course of neuron s′ survival and repair during the period of post hypoxia-ischemia reperfusion.I t is very important for the protection of the pyramidal hippocampal neurons on t he damaged side,especially for the sensitive region CA1. J Appl Clin Pediatr,2005,20(2):133-135

Objective To study the risk factors of intracranial hemorrhage after endovascular therapy of cere-bral arteriovenous malformations embolization.Methods the clinical records and images of 230 patients with cAVMs were retrospectively reviewed.Patients with intracranial hemorrhage after endovascular therapy in 3 days were recorded and the risk factors of hemorrthage by using multivariate logistic regression for guiding the treatment strategy were studied.Results There were 15 patients occurred intracerebral hemorrhages.After treatment the area of cAVMs was significantly smaller than that before treatment[(2.18 ±0.91)cm vs (6.67 ±1.56)cm],the difference lvas a statis-tically significant (t =9.627,P <0.05).A partial AVM reduction of ≥36.5%(P =0.031)and hypertension(P =0.025)were considered as risk factors for hemorrhage after endovascular therapy of cAVWs.Conclusion Patients receives a partial AVMreduction of ≥36.5% or with hypertension history have a tendancy of increasing hemorrhage after endovascular therapy of cAVMs.It's helpful for preventing intracerebral hemorrhage if the arterial blood pressure maintains after endovascular therapy.

The authors designed to separate, purify and determine the monosaccharide composition of the polysaccharide from Cordyceps militaris, and study its effect on reverse cholesterol transport in vivo by isotope tracing assay. Polysaccharides were separate and purify by ion exchange column Q-sepharose Fast Flow and size exclusion column Sephacryl S200HR; the molecular weight and monosaccharide composition of the polysaccharides were determined by high performance gel permeation chromatography and high performance liquid chromatography coming with pre-column derivation, respectively. Finally, three purified polysaccharides CMBW1, CMBW2 and CMYW1 were obtained, their total carbohydrate contents were 87%, 89%, 95%, respectively; their protein contents were 6.5%, 1.3%, 2.8%, respectively; their molecular weights were 772.1, 20.9, 13.2 kDa, respectively; CMBW1 was composed of mannose, glucosamine, rhamnose, glucuronic acid, glucose, galactose and arabinose with a molar ratio of 7.25: 0.17: 1.29: 0.23: 6.30: 11.08: 0.79; CMBW2 was composed of mannose, glucosamine, galactose and arabinose with a molar ratio of 2.40: 0.16: 2.92: 0.24; CMYW1 was composed of mannose, glucosamine, glucuronic acid and glucose with a molar ratio of 0.59: 0.57: 0.45: 25.61. Polysaccharide at 50 mg x kg(-1) could significantly improve the transport of 3H- cholesterol to blood and excretion from feces. All of the three purified polysaccharides CMBW1, CMBW2 and CMYW1 were heteropolysaccharide; and they could improve reverse cholesterol transport in vivo, the underlying mechanisms are being studied.
Animals ; Biological Transport ; drug effects ; Cholesterol ; metabolism ; Chromatography, High Pressure Liquid ; instrumentation ; methods ; Cordyceps ; chemistry ; Mice ; Monosaccharides ; analysis ; isolation & purification ; Polysaccharides ; chemistry ; isolation & purification ; pharmacology ; Tritium

Aim To investigate the cardiotoxicity of propofol and thiopental. Methods 4day-old contracting neonatal primary myocardial cells obtained from 2-to 3-day-oldWistar rats were divided into 5 groups, with normal contrast group, and the cellcultures in groups PL, PH, TL and TH, were treated with propofol(3 ? 10-5 and3 ? 10-4 mol? L) and thiopental (1 ? 10-5 and 1 ? 10-4 mol?L) for 8 h.The con-tractility and morphology of the cells were observed and the cytoplasmic enzyme(LDH, AST, CK and ALP) release content of myocardial cell and the concentrationof electrolytes (K +, Na +, Cl - and Ca2+ ) in the medium were measured 8 h afterintravenous anesthetics administration. Results In groupPH and TL decreasedsignificantly (P