Aim To observe the changes on the expression of ?-SMA in rats with adriamycin-induced nephrothy and intervention of Valsartan. Methods The model group were made by unilateral nephrectomy with twice-adriamycin injections by caudal vein. Immunohistochemical method, flow cytometry and pathologic image analysis were used to observe the expression of ?-SMA, FN and LN in rats. Results The expression of ?-SMA was positive in the model group. Rates of positive cell and protein semi-quantitative analysis were more higher than the sham group(P

It expounded the important position of physique in etiology and process of disease,investigated essence and application of physique in disease control,revealed the classifi cation of physique in three yin three yang.Also it expounded the signif icance of diagnosis of disease in TCM theory and clinical therapy,then revealed basic pathogenesis of diabetes:damaged yin and qi due to inner heat.Then it discussed the syndrome differentiation in the TCM treatment and suggested that it should combine with physique differentiation and diagnosis of disease.At last it expounded the trinity of physique differentiation,diagnosis of disease and syndrome differentiation in treating diabetes and its complication.

Objective To assess the association between helicobacter pylori (HP) infection and dyslipidemia in different gender population.Methods We conducted cross-sectional analysis using data of 1921 cases of demographic characteristics,anthropometry,life style,lipid profile,etc.,from the subjects who received health examination from January 2010 to June 2012 in Department of Geriatrics,Tongji Hospital.Diagnosis of HP infection was achieved by using 14C-Urea Breath Test (14C-UBT).The participants were divided into HP infection positive group and HP infection negative group by 14C-UBT.Results In female subjects,the levels of total cholesterol/high-density lipoprotein cholesterol (TC/HDL-c) were higher in HP positive group than HP negative group (P ＜ 0.05),but there was no obvious difference between the levels of low density lipoprotein cholesterol (LDL-c) in HP positive group and HP negative group.However,in the male subjects,the levels of LDL-c and TC/HDL-c were significantly increased in HP positive group than HP negative group (P ＜ 0.05).HP positive group had a greater risk for high TC/HDL-c both in female and male subjects.In female subjects,the risk for high TC/HDL-c in HP positive group was 1.90 times of that in HP negative group (95％ CI,1.06 ～ 3.38).In male subjects,the risk for high TC/HDLc in HP positive group was 1.56 times of that in HP negative group (95％ CI,1.21 ～ 2.00).But only in male subjects,the risk for high LDL-c in HP positive group was 2.33 times of that in HP negative group (95 ％ CI,1.34 ～ 4.06).Conclusions We observed that HP infection was probability associated with dyslipidemia.

Objective To establish a carrying system for space cellular experiment suitable for astronaut to carry out cellular experiments on Shenzhou-6 mission.Methods The cell carrying sample bag,sample box and sample box integrated package were designed.Primary cardiomyocytes and osteoblasts culture and ground model experiment in the simulated environment of space cabin were performed.With man-tended,the cellular experiment was carried out on the orbit.Results After 5 d space flight,the returned cell samples were analyzed.The results demonstrated that the system was of good safety,reliability and applicability,as well as satisfied the demands of analyzed samples.Conclusion After Shenzhou-6 space flight,it is showed that this system fits for small loading,multi-cells and man-tended carrying mission,and can satisfy the demand of the first man-tended space cellular experiments carried out on the Shenzhou-6 spacecraft.

BACKGROUND: The rudiment of tissue engineering is to obtain tissue from patients. The cells are expanded into a population through cellular culture, and seeded into scaffolds, which can accommodate and guide the growth and proliferation of new cells in the three-dimensional scaffolds. At last, the constructed tissue is transplanted in vivo to repair or replace damaged or diseased tissues. Afterward neovascularization of the graft, the scaffolds are absorbed gradually. Finally, the new tissue replaces completely the damaged or diseased tissuesOBJECTIVE: To evaluate the feasibility of designing and fabricating customized anatomical-shaped bone tissue-engineering scaffolds with reverse engineering and rapid prototyping (RP) techniques. To avoid the disadvantage of the conventional fabricated methods of the scaffolds.DESIGN: The method of fabricating customized anatomical-shaped bone tissue engineering scaffolds.SETTING: Computer-aided design (CAD) of the scaffold was conducted in CAD training center, Guangdong Machinery Research Institute. Rapid prototyping fabrication of the scaffold was conducted in Guangdong Longchuangyu Limited Cooperation. The scaffold was fabricated by sterophotocureable technology and was made of photosensitized resin.METHODS: This experiment was carried out at the Center of Department of Traumatic Orthopedics, General Hospital of Guangzhou Military Area Command of Chinese PLA from October 2004 and January 2005. According to reverse engineering, layered image information of skeleton of the patients was scanned with CT/MRI. Anatomical models of region of interesting were created by means of CT or MRI three-dimensional reconstruction and surface reconstruction. The internal construction of the scaffolds was designed with CAD software in the outline of the anatomical models to develop computer-aided model. The prototypes of the scaffolds were fabricated by RP process.MAIN OUTCOME MEASURES: ①CT/MRI scanning, three-dimensional reconstruction, anatomical modeling; ② computer-aided design of customized bone tissue engineering scaffolds; ③rapid prototyping fabrication of customized bone tissue engineering scaffold.RESULTS: ①Anatomical models of bone joint were established through CT/MRI three-dimensional reconstruction. ② The internal structure of the scaffold was designed to establish the entity model of bone tissue engineering scaffold successfully with computer-aided design software. ③ CAD model of bone tissue engineering scaffold guided prototypes to develop the customized anatomical-shaped bone tissue engineering scaffolds. The internal structure of bone tissue engineering scaffold was fine and had high degree of porosity-and pore interconnectivity.CONCLUSION: Customized anatomical-shaped bone tissue engineering scaffolds can be fabricated with reverse engineering and RP technology. Among all RP processes, stereophotocureable technology (SLA) is the best one with good precision, smooth surface and good shaping.

The purpose of the study was to observe the effect of rapamycin (RAPA) on the differentiation and maturation of rat bone marrow-derived dendritic cells (BMDCs) in vitro. BMDCs from Wistar rats were cultured with granulocyte-macrophage colony-stimulating factor plus interleukin-4 in the presence or absence of RAPA (20 ng/mL), and stimulated with lipopolysaccharide (LPS) for 24 h before cells and supernatants were collected. Surface phenotype of BMDCs was flow-cytometrically detected to determine the expression of maturation markers, MHC class II and CD86. Supernatants were analyzed for the production of IL-12 and IFN-gamma cytokines by using ELISA. BMDCs were co-cultured with T cells from Lewis rats and mixed lymphocyte reaction was assessed by MTT method. The morphology of BMDCs stimulated with LPS remained immature after RAPA pretreatment. RAPA significantly decreased the CD86 expression, impaired the IL-12 and IFN-gamma production of BMDCs stimulated with LPS, and inhibited the proliferation of allogeneic T cells. In conclusion, RAPA can inhibit the maturation of BMDCs stimulated with LPS in terms of the morphology, surface phenotype, cytokine production, and ability of BMDCs to stimulate the proliferation of allogeneic T cells in vitro.

Objective To study the temporal distribution of macrophage and its phenotype markers in fibrous capsules around silicone implants.Methods Thirty rats were randomly divided into five groups:days 1,3,7,14 and 35.Silicone prostheses (10 ml) were implanted subcutaneously into backs of rats.On each indicated day,the tissue specimens were collected,fixed in 4％ paraformaldehyde for 24 hours and embedded in paraffin.Immunofluorescence was used to detect temporal distribution of M1/M2 macrophages.Results The number of CD68+ macrophages at day 1 (65.8±12.9) was smaller than that at day 3 (102.8±14.5,P＜0.05) and day 7 (116.8±14.2,P＜0.05);and the number of CD68+ macrophages at day 7 was larger than that at day 14 (56.8±12.9,P＜0.05) and day 35 (21.40±6.35,P＜0.05);the proportion of iNOS+ CD68+ M1 cells at day 1 and day 3 was 0.48±0.13,0.60±0.13,respectively,and they were higher than that at day 7 (0.21±0.03,P＜0.05),day 14 (0.21±0.03,P＜0.05) and day 35 (0.17±0.04,P＜0.05);the proportions of CD206+ CD68+ M2 cells at day 1,day 3,day 7,day 14,day 35 were 0.70±0.06,0.60±0.07,0.70±0.08,0.67±0.02 and 0.60±0.06,respectively.Conclusions After the implantation of silicone prostheses,M1 cells increase in early stages and M2 cells maintain in high level throughout the experiment period.

Objective To observe the effect of botulinum toxin type A (BTX-A) on the rate of skin expansion and the immediate retract rate of skin flaps in rats,and to explore new methods for drug-assisted skin expansion.Methods 18 Sprague-Dawley rats were randomly divided into two groups.After BTX-A or normal saline was injected intradermally into the back marking area,an expander was implanted.The expanders were inflated periodically by injecting normal saline to reach the designated intraexpander pressure.The inflation volume was recorded and the area of marked region was measured regularly.After 4 weeks of expansion,the expanded tissues were harvested and the immediate retract rates were measured.The hematoxylin-eosin staining was performed to observe the thickness of epidermis,dermis and the fibrous capsule,while Masson staining for detection of fibrous capsule collagen.Immunohistochemical staining with α-smooth muscle actin for myofibroblasts was also performed.Results The mean inflation volume and area of marked region of BTX-A group were significantly greater than those of the control group.There were lower immediate retract rate,thinner fibrous capsule,less collagen content and fewer α-SMA positive myofibroblasts in the fibrous capsule of the BTX-A group with statistically significant differences (P ＜ 0.05).There was no signigicant difference in the thicknesses of epidermis and dermis between the two groups (P＞0.05).Conclusions BTX-A can inhibit the formation of fibrous capsule to promote skin expansion,while reducing the immediate retract rate.It possess a potential for assisting effectively skin expansion.