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.

Adenoma ; metabolism ; pathology ; surgery ; Aged ; Diagnosis, Differential ; Endodermal Sinus Tumor ; pathology ; Female ; Humans ; Immunohistochemistry ; Neprilysin ; metabolism ; Ovarian Neoplasms ; metabolism ; pathology ; surgery ; Sex Cord-Gonadal Stromal Tumors ; pathology ; Stromal Cells ; metabolism ; pathology ; Vimentin ; metabolism

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

A certain amount of image noise is increased in low-dese protocols, but image quality is still acceptable without problem in CT localization. The reduction of radiation dose and the radiation harm to patients are the superiority.

Objective To observe the serum adiponectin, leptin level, and adiponectin/leptin ratio (A/L ratio) in elderly male patients with normal BMI and visceral adipose deposit but without metabolic syndrome. Methods A total of 109 elderly males (≥60 years old) were enrolled whose BMI were all less than 25 kg m and without metabolic syndrome. They were divided into non visceral adipose deposit group (n = 67) and visceral adipose deposit group (n = 42 ). Serum levels of adiponectin and leptin were measured by radiological immunological assay (RIA) and the A/L ratio was calculated. Visceral adipose deposit was defined as visceral adipose area more than 100 cm2.Metabolic syndrome diagnosis was according to the definition provided by China Diabetes Society (CDS) in 2004. Results (1)The visceral adipose area [(135.56±31.72)cm2 vs. (68. 65±22.64)cm2 , P＜ 0. 001] and BMI [(22.94 ± 1.35 ) kg/m2 vs. ( 21.38 ± 2.55 ) kg/m2 , P ＜ 0.001] were significantly higher in visceral adipose deposit group than in non visceral adipose deposit group. The A/L ratio was significantly lower in visceral adipose deposit group than in non visceral adipose deposit group ( 2. 17 ± 1.77 vs. 4.54 ± 7.00, P = 0. 034 ) while there was no difference in serum adiponectin or leptin level between those two groups. (2)The A/L ratio was negatively correlated with BMI (r=-0.552, P＜0.001), waist circumstances (r=-0.390, P＜0.001) and abdominal visceral fat area (r=-0.341, P＜0. 001 ). Conclusions The A/L ratio decreases in elderly men with normal BMI and visceral adipose deposit. A/L ratio could be useful in scanning those patients with visceral adipose deposit whose BMI is normal among elderly men.

Objective To observe the clnical effects of influence of tanshinone type ⅡA sulfonate on preventing hepatic artery thrombosis after transplantation.Methods A total of 60 patients after liver transplantation were randomly individed into the treatment group and control group, each 30 patients. The treatment group received tanshinone ⅡA sodium sulfonate treatment (60 mg qd, ivgtt continuous 10d) , while the control group used conventional heparinization. The blood coagulation index and the thrombelastograph variables were detected after 7 days and the hepatic artery resistance index (RI) was detected by using Doppler ultrasonography. The postoperative complications and mortality rates were analyzed.Results Although it had little improvement on the coagulation function after liver transplantation, tanshinone ⅡA sodium sulfonate had significant improvement on the time of thrombelastograph parameters reaction (6.35 ± 1.59 minvs. 5.21 ± 1.37 min,t=2.453) and maximum amplitude (58.07 ± 5.42 mmvs. 61.67 ± 5.63 mm,t=-2.532). It showed that RI have significantly statistical difference between the two groups after treatment (0.73 ± 0.11vs. 0.62 ± 0.10;t=-2.948,P<0.01). During the trial, the control group had 2 cases of postoperative complications, HAT and bleeding.Conclusions The Tanshinone ⅡA sodium after liver transplantation can improve the clotting mechanism, preventing HAT.

Objective:To identify the healing effect of electrospun silk fibroin-BMP-2 as a biologic pulp capping agent to inflammatory pulp in rat caused by lipopolysaccharide ( LPS) .Methods:A total of 30 healthy adult male Wistar rats were randomly divided into five groups:(1) normal control group without operation;(2) blank control group without capping agents;(3) calcium hydroxide capping group;(4) electrospun silk fibroin capping group;(5) electrospun silk fibroin-BMP-2 capping group .Bilateral up-per first molars of each rat in group 2-5 were drilled to expose the pulp to LPS which was used to estab-lish a model of inflammatory pulp .The exposed pulp was capped with different capping agents or without capping agents.Then the hole was sealed.The animals were sacrificed on days 3, 7, and 14 post-opera-tion and histological analysis was carried out , including HE stain and CD 14 immunohistochemical stain . Results:On day 7 and 14 , the lowest inflammatory reaction score in HE stain among pulp capping groups was that of silk fibroin-BMP-2 group .The next were calcium hydroxide group and silk fibroin group .That of blank control group was the highest .The ranking of reparative dentine scores of those groups was just reversed.The D values of immunohistochemical stain of CD 14 were not significantly different in groups applied pulp capping agents but significantly lower than blank control group on days 3 and 7.However, the D value of silk fibroin-BMP-2 group ( 0 .145 ±0 .011 ) was significantly lower than blank control group (0.287 ±0.019), calcium hydroxide group (0.170 ±0.017) and silk fibroin group (0.175 ± 0 .018 ) on day 14 .Conclusion:Electrospun silk fibroin compounded with BMP-2 promoted wound hea-ling of exposed pulp and had better potential to stimulate formation of reparative dentine to establish a suitable environment for pulp recovery .

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.