AIM:Effects of anatotensin Ⅱ on type Ⅰ collagen synthesis and its mRNA expansion in cultured vascular adventitial fibroblasts. METHODS: Vascular adventitial fibroblasts (VAF)were isolated, cultured from rat thoracic aorta by explant method. ELISA was used to study type Ⅰ collagen synthesis and competihve RT - PCR was employed to detect its mRNA expression after angiotensin Ⅱ administration. RESULTS: Angiontensin Ⅱ caused a dose dependent increase of type Ⅰ collagen synthesis and its mRN expression in VAF. CONCLUSION: The results support that angiotensin Ⅱ is an important factor controlling collagen metabolism of VAF and VAF may play an im- portant role in vascular remodelling of hypertension.

Objective: To study collagen distribution and its quantitative variation in t he aortic adventitia of spontaneously hypertensive rats Methods: Sirus red stain was used to observe collagen distribution in aortic adventitia；Chloramine-T oxidation assay was employed to quantitate the collagen of aortic adventitia；Immuno-histochemical staining was adopted to detect type Ⅰ、Ⅲ collagen synthetic characteristic of vascular adventitial fibroblasts. Results: Collagen of rat aoritc wall mainly distributes in adventitia；SHR shows more collagen deposition in adventitia than WKY at the age of 8weeks and 24 weeks；The immuno-histochemical staining of type Ⅰ、Ⅲ collagen in vascular a dventitial fibroblasts is positive. Conclusions: All those results indicate that vascular adventitia ma y be involved in hypertensive vascular remodeling.and vascular adventitial fibroblasts can synthe size collagen type Ⅰ and Ⅲ.

OBJECTIVE:To study the bactericidal activity of thymopentin and its derived peptides. METHODS:Agar plate count was adopted to determine the bactericidal activity of thymopentin [arginine(R)-lysine(K)-aspartic acid(D)-valine(V)-tyro-sine(Y),RKDVY],its derived peptide 1 [RKN(agedoite,N)VY] and derived peptide 2(RKKVY)to Gram negative bacterial (Proteusbacillus vulgaris,Escherichia coli) and Gram positive bacterial (Staphylococcus aureus,Enterococcus faecium). There were 15.625-1 000 μg/ml for peptides,102 CFU for bacteria. RESULTS:Three pentapeptides possessed bactericidal activity against Gram negative bacteria. The activities of RKKVY and RKNVY were stronger than RKDVY(P<0.01),there was no significant dif-ference between RKKVY and RKNVY(P>0.05). They also possessed bactericidal activity against Gram positive bacteria,and the activity from strong to weak was RKKVY>RKNVY>RKDVY(P<0.01). CONCLUSIONS:Thymopentin and its derived peptides possess bactericidal activity against Gram negative and positive bacteria,with dose-effect relationship.

Adolescent ; Female ; Humans ; Polyendocrinopathies, Autoimmune ; classification ; diagnosis ; drug therapy

Aim To further analyze the effects of PTEN/Akt/MDM2 signaling pathway in the harmine (HM)-mediated inhibition of COX-2 expression in gastric cancer cells. Methods PTEN-siRNA, Akt-siR-NA, MDM2-siRNA were constructed and respectively transfected into SGC-7901 and MKN45 cells,and then added or not added HM for 24 h. The expression of PTEN, Akt and phosphorylated Akt ( p-Akt), MDM2 and phosphorylated MDM2 ( p-MDM2), as well as COX-2 expression was detected by Western blot. Results HM increased PTEN expression, but inhibited p-Akt,p-MDM2 and COX-2 expression in SGC-7901 and MKN45 cells. Knockdown of PTEN blocked HM-induced inhibition of Akt and MDM2 phosphorylation, as well as down-regulation of COX-2 expression. Knockdown of Akt and treatment with HM synergisti-cally inhibited p-MDM2 and COX-2 expression. Knockdown of MDM2 and treatment with HM synergis-tically inhibited COX-2 protein expression. Conclusions HM down-regulates the expression of COX-2 protein in gastric cancer cells via PTEN/Akt/MDM2 signaling pathway.

Penehyclidine hydrochloride (PHC),a selective anti-cholinergic drug,may has therapeutic effect on dysmenorrhea.The mechanism of PHC in dysmenorrhea may be related to the cholinergic receptor and toll-like receptors.This aim of the review is to state the new mechanism of dysmenorrhea and the status of PHC on anti-dysmenorrhea.

Animals ; Antioxidants ; pharmacology ; Fatigue ; prevention & control ; Male ; Mice ; Physical Exertion ; physiology ; Random Allocation ; Recombinant Proteins ; genetics ; metabolism ; pharmacology ; Superoxide Dismutase ; genetics ; metabolism ; pharmacology ; Swimming ; physiology

Objective To analyze the relationship between obstructive sleep apnea syndrome (OSAS) and metabolic syndrome (MS) in petrol field workers.Methods A total of 100 cases of OSAS patients of petrol field workers were enrolled as the study objects from March 2013 to August 2015 in emergency and respiratory department in Daqing Longnan Hospital and were divided into three groups:simple snoring group (Group A,n =26),mild OSAS group (Group B,n =42),and severe OSAS group (Group C,n =32).The comparison of dietetic status score,sleep status score and the patients with MS among 3 groups were carried out.The relationship between OSAS and MS was analyzed by using univariate and multivariable Logistic regression analyses were used.Results In Group C,sleep status score (8.3 ± 1.2) and dietetic status score (7.6 ± 1.4) and the rates of MS (23/32) were higher than those in the other two groups (P ＜ 0.05).Univariate and multivariable Logistic regression analyses,showed OSAS was the risk factorofMS [r=11.211 (OR =9.412,95％ CI:5.992～15.202)].Conclusions Dietetic status and sleep status were obviously influenced by OSAS in petrol field workers.The incidence of MS were more common in petrol field workersevere with OSAS and OSAS was a risk factor of MS.

Objective To explore the relationship between self-control ability and physical and mental health of the elderly people in nursing home.Methods 183 elderly people from three nursing homes were investigated using self control measurement method of dual system scale and World Health Survey.The individuals were divided into high control low impulsiveness group(n=51),high control high impulsiveness group(n=36),low control low impulsiveness group(n=27) and low control impulse group(n=69).Results The total score of physical and mental health for elderly people in nursing homes was.(1.76±0.46),while the scores of body health,mental health and overall self evaluation were (1.84± 0.56),(1.66± 0.42) and (2.93±0.72).The scores of physical health and mental health for elderly people in nursing homes of impulse and control system for elderly people in nursing homes were (2.98 ± 0.63) and (3.35 ± 0.59).The scores of physical health (r=0.15),mental health (r=0.29) and overall self evaluation (r=0.31) were positively correlated with impulse system,and negatively correlated with control system (r=-0.26,-0.33,-0.34,P＜0.05).The scores of physical health,mental health and overall self evaluation in four groups were significantly different (F=12.39,33.82,21.50,P＜0.01).Conclusion The physical and mental health of the elderly people in nursing home is correlated with self-control ability.

Objective To explore effects of human embryonic stem cells ( hESCs) on proliferation, invasion and migration of SK-Hep1 human hepatoma cells in the co-culture of micro environmen of hESCs and SK-Hep1 . Methods Single cultured SK-Hep1 cells were served as control group while SK-Hep1 which non-contact co-cul-tured with hESCs was regarded as experimental group .The proliferation ability of SK-Hep1 was measured by MTT method; invasion and migration ability of SK-Hep1 cells were detected by Transwell chamber method;the nucle-us variation and cell apoptosis of SK-Hep1 were detected by Hoechst33258 chromosome and flow cytometry. Results The proliferation of SK-Hep1 cells in the experimental group was obviously inhibited as compared with control group ( P<0.05 );the number of SK-Hep1 cells which passed through the Transwell chambers were sig-nificantly reduced as compared with control group in invasion and migration experiment ( P <0.05 ); more nucleus pycnosis and deformation appeared in experimental group than that in control group .And apoptosis rate of SK-Hep1 cells in the experimental group was significantly higher than that of in the control group ( P<0.05 ) .Conclusions Human embryonic stem cells have inhibitory effect on human hepatoma cell line SK-Hep1 .