Objective: To evaluate the role of decellularized vascular scaffolds coated with anti-CD34 antibodies in capturing endothelial progenitor cells from the circulation to participate in recellularization. Methods: Fresh caprine forelimb arteries were treated with repeated frozen/thawing, ultrahigh pressure and SDS to prepare decellularized vascular scaffolds. After reaction with photochemical crosslinker SANPAH, anti-rabbit CD34 was coated onto the decellularized vascular scaffolds using ultraviolet ray. Twenty New Zealand white rabbits were performed for right lower-abdominal pedicled skin flap, which were supplied by branches of femoral artery. Whole defects (1 cm) were made in femoral arteries and end-to-end anastomosis repaired by 10 cross-linked and 10 non-cross-linked scaffolds in experimental group and control group, respectively. The patency of the pedicle was observed through color and appearance of the flap postoperatively. After transplantation, patency rate and cell seeding were detected by Doppler, DSA, and pathological test. Results:. Flaps of the experimental group had good blood supply after transplantation, while swelling and necrosis could be found in the control group. Doppler and DSA showed that the 7 of 10 cross-linked scaffolds remained patent for 4 weeks and there was no stenonsis, but all the scaffolds were obstructed in the control group after 1 week. Hematoxylin and eosin staining revealed that the inner layers of cross-linked scaffolds were partly covered with endothelial cells four weeks later, and there was no noticeable stenosis. In contrast, thrombosis formation was noticed in the control group and there was no cell coverage one week after operation. Conclusion: Cross-linked scaffolds with anti-CD34 antibodies are superior to bare scaffolds in early postoperative anticoagulation and patency.

Coronary atherosclerotic heart disease is the leading cause of death in the world of non-infectious diseases.High density lipoprotein ( HDL ) plays an important role in the progression of anti-atherosclerosis.Recent studies have found that HDL can carry microRNA, and the anti-inflammation function of endothelial cell is achieved by the transport of microRNA.The specific functions of different HDL subtypes in the anti-atherosclerosis have been gradually recognized.At the same time, a series of traditional HDL anti-atherosclerotic functions also have been newly discovered, such as reverse cholesterol transport, antioxidant, anti-inflammatory and the protection of vascular endothelium.All of these advances provide a new basis for the clinical application of HDL.

Objective We selected 3 268 genes of human myocardial cells and analyzed the variability of mRNA expression of myocardial cells in normal adults,to explore the variation of energy metabolism related genes in human myocardial cell and compared the characteristics and variation tendency of energy metabolism related genes in human myocardial cells in the early stage.Methods Microarray was prepared with 3 368 myocardial cell related cDNAs.And we studied differentially expressed genes between myocardial cells and multi-tissues in normal adults by PCR,sequence,fluorescent probe labelling and double hybridisation.Results Functional group analysis was carried out with 3 268 genes of myocardial cells in normal adults.Compared with Universal Human Reference,576 genes from myocardial cells were up- regulated(≥1.5 folds).Expression of 1 199 genes were down-regulated(≤66.7%).194 genes were involved in cell energy metabolism.Among them,17 genes were up-regulated and 4 genes were down- regulated.65 genes were related with cellular skeleton,18 of them had up-regulation and one of them had down-regulation.Coneluslon Compared with multi-tissues,there were many genes preferentially expressed in myocardial cells of normal adults,which can be used as a reference system to evaluate the different stages and different pathological behaviors of cardiovascular diseases.

Objective:To analyze the effect of MCT/LCT fat emulsions at different doses on the growth and development of prema-ture and low birth weight infants. Methods: Totally 76 cases of preterm or low birth weight infants were divided into the treatment group (40 cases) and the control group (36 cases), both groups were given MCT/LCT fat emulsions, amino acid and glucose injec-tions in 12-24 h after the birth. The initial dose of MCT/LCT fat emulsions in the treatment group was 2. 0 g·kg-1 ·d-1 and the dose was gradually increased to 3. 0 g·kg-1 ·d-1 with 0. 5 g·kg-1 ·d-1 progressive increase. The initial dose of MCT/LCT fat emulsions in the control group was 0. 5 g·kg-1 ·d-1 , and the dose was increased to 3. 0 g·kg-1 ·d-1 with 0. 5 g·kg-1 ·d-1 progressive in-crease. The treatment course was 7 days. The neonatal weight, serum total bilirubin, direct bilirubin, alanine aminotransferase, total cholesterol, triacylglycerol and blood glucose were monitored in the two groups. Results:The born body mass recovery time of the ob-servation group was (4. 38+0. 93) d, which was significantly shorter than that in the control group [(6. 81+1. 90) d]. After the re-covery, the body weight growth rate of the observation group was (30. 41+1. 81) g·kg-1 ·d-1 , which was significantly higher than that of the control group [(18. 21 +2. 08) g·kg-1 ·d-1, P <0. 05]. After the 7-day treatment, the blood biochemical indices showed no statistically significant difference between the two groups (P>0. 05). Conclusion:Early application of MCT/LCT fat emul-sions at high dose is beneficial to the improvement of nutritional status in premature infants.

Objective To observe the expression of DR5 in the ocular tissues of uveitis rats induced by endotoxin,and study the relationship between the apoptosis of inflammatory cells and expression of TRAIL / DR5.Methods SD rats were randomly divided into 3 groups:Blank control group,normal saline injection group and endotoxin injection group.The endotoxin injection group was injected with lipopolysaccharide into the rat posterior foot pad to make endotoxin-induced uveitis animal model.There were no operations in the blank control group,and the subgroups were divided into 6 hours,12 hours,24 hours and 48 hours groups according to the time of injection.The ultrastructural changes of inflammatory cells and endothelial cells in iris capillaries were observed by transmission electron microscopy (TEM).The expression of DtR5 protein on inflammatory cells at different time after endotoxin induction was detected by SABC method.Results TEM showed that the microvilli of the capillary endothelial cells in the iris tissue of the blank control group and saline injection group had more obvious vesicles with no obvious abnormal structure and shape.The number of swallowed vesicles in the capillary endothelial cells injected with endotoxin was decreased at 6 hours group,and the number of vesicles in the infiltrating neutrophils and lymphocytes decreased.Neutrophils and lymphocytes appear chromatin condensation,vacuolar changes in the expression of apoptosis.Immunohistochemistry showed that the DR5 protein was negative in the iridocular epithelium of the blank control group and saline injection group.In the endotoxin injection group,the DR5 protein was weakly colored in the iris pigment epithelium and appeared on the inflammatory cells.The number of staining and the intensity of coloring in the 24 hours group were significantly higher than those in the 6 hours group,and the color density was 0.085 9 ± 0.019 6,there were statistical differences compared with 6 hours group,12 hours group and 48 hours group (all P ＜ 0.05).Conclusion TRAIL and its receptor DR5 may be involved in the apoptosis of inflammatory cells in endotoxin-induced uveitis.

Adult ; Humans ; Male ; Sleep Apnea Syndromes

Antiphospholipid Syndrome ; pathology ; physiopathology ; Child ; Female ; Follow-Up Studies ; Humans

Objective To explore the differences of serum free fatty acids (FFA)between the hyperlipidemia group and the healthy people with different ages and genders.Methods 912 healthy individuals of physical examination (healthy control group) and 1 061 patients with hyperlipidemia were selected and detected the serum FFA,total cholesterol,triglyceride,high density lipo-protein-cholesterol,low density lipoprotein-cholesterol,fasting plasma glucose and body mass index.The covariance analysis was used to investigate the differences in the level of serum FFA among different genders and age groups.The relationship between ser-um FFA and other serum lipids index in the patients with hyperlipidemia was analyzed by the multiple correlation analysis.Results The serum FFA level in the middle-aged females,middle-aged males and young males with hyperlipidemia was higher than that in the corresponding control groups;the serum FFA level in the young females with hyperlipidemia was lower than that in the other groups with hyperlipidemia;in the population groups with normal blood lipid,the serum FFA level in the old-age group was signifi-cantly higher than that in the middle-age and young group.Conclusion There is a difference in the serum FFA level in the hyperlip-idemia group with different ages and genders.

ObjectiveTo investigate the clinical efficacy of heat-sensitivepoint Yaoyangguan(GV3)moxibustion for sciatica and preliminarily explore the mechanism of its action.MethodOne hundred and twelve sciatica patients were randomly allocated to heat-sensitive point Yaoyangguan moxibustion (observation), non-heat-sensitive point Yaoyangguan suspended moxibustion (control) and medication groups. The observation group received heat-sensitive point Yaoyangguan moxibustion; the control group, non-heat-sensitive point Yaoyangguan suspended moxibustion; the medication group, oral administration of Yaobitong capsules. The clinical symptoms were scored, the Pain Rating Index (PRI), the Visual Analogue Scale (VAS) and the Present Pain Intensity (PPI) scores were counted and serum IL-8 content was measured in the three groups beforeand after 15 days of treatment.ResultAfter 15 days of treatment, all the three treatments had a certain therapeutic effect on sciatica. The therapeutic effect was bestin the observation group (P<0.05). The PRI, VAS and PPI scores and serum IL-8 contentdecreased in all the three groups compared with before treatment (P<0.05) and were lower in the observation group than in the control and medication groups (P<0.05). There was no statistically significant difference between the control and medication groups (P>0.05).ConclusionHeat-sensitive point Yaoyangguan moxibustion has a better therapeutic effect than non-heat-sensitive point Yaoyangguan suspended moxibustion and oral administration of Yaobitong capsules. This method is an ideal treatment for sciatica. The mechanism may be related to a posttreatment decrease in inflammatory factors in the diseased region.

Objectiye To investigate the relationship between microsatellite instability (MSI) and mismatch repair gene (MMR) in lung carcinoma,and to analyze its action in lung carcinogenesis.Methods DNA was extracted from 50 cases of lung carcinoma and adjacent normal tissue.SSCP was used to detect MSI.Immunohistochemistry was performed to measure the expression of hMLH1 and hMSH2 protein in lung carcinoma.Results Of the 50 cases of lung carcinoma,14 with high MSI,21 with low MSI,and 15 with microsatellite stability,0 with MSI in normal group (P = 0.000).Lack of hMLH1 and hMLH2 staining was found in 37 of 50 (74 %) and 16 of 50 (32 %) lung carcinoma tissues with MSI,respectively; but both of hMLH1 and hMSH2 positive staining was found in the lung carcinoma tissues with MSS.Conclusion MSI appears to be associated with lung carcinogenesis,and inactivation of either hMLH1 or hMSH2 may be responsible for MSI,suggesting that MSI may become one of diagnosis indexes of lung carcinoma.