BACKGROUND:In resent year,as the biological materials improving,all kinds of sutures are used widely in clinic. It is an important problem how to select the exact one for surgeon. OBJECTIVE:To compare the effect of antibacterial and poly (p-dioxanone) absorbable sutures (PDS) in abdominal wall incision. DESIGN,TIME AND SETTING:A contrast observation was performed at the Department of General Surgery,the Second Affiliated Hospital of Shantou University Medical College between January 2005 and August 2007. PARTICIPANTS:A total of 450 laparotomy patients,including 230 males and 220 females aging 18-78 years with the mean age of (40?9) years were collected in this study. METHODS:The 450 patients were randomly divided into three groups,including the antibacterial absorbable suture (AAS; abdominal wall incision except the skin was successively sutured with triclosan-coated antibacterial absorbable suture),PDS group (abdominal wall incision except the skin was successively sutured with PDS suture),and control group (abdominal wall incision was treated with common suture),with 150 cases in each group. All patients were followed up for 12-24 months. MAIN OUTCOME MEASURES:The visual analogue scale (VAS; point 0:indolence; point 10:severe pain),the incision heal classification and complications including incisional infection,rejection reaction,scar formation,incisional disruption and incisional hernia. RESULTS:A total of 450 cases were included in the final analysis. The VAS in the AAS group and the PDS group were significantly lower than control group (P

Objective To investigate the involvement of VEGFR-3 signaling pathway in lymphatic metastasis of thyroid cancer. Methods The expression of VEGFR-3 mRNA in thyroid carcinoma and normal thyroid tissue was detected by RT-PCR. The expression of VEGFR-3 mRNA and the lymphatic vessel density (LVD) in thyroid carcinoma and normal thyroid tissue was measured by immunohistochemical staining. Results All thyroid cancer samples expressed VEGFR-3 and the expression rate of VEGFR-3 in thyroid carcinoma was significantly higher than that in the normal thyroid group ( P ＜ 0. 05 ). LVD in thyroid cancer was significantly higher than that in normal control. LVD with lymph nodes metastasis ( N + ) was significantly higher than that without lymph node metastasis (NO) (P ＜ 0. 05). Conclusions There is upregulatin of VEGFR-3 expression in thyroid carcinoma. The higher the expression of VEGFR-3, the severer of lymph node metastasis. VEGFR-3 receptor-mediated signal transduction pathway might be an important factor of thyroid cancer lymph node metastasis.

2～3 cm). MVC of preoperative bioptic specimens will help to choose the length of distal clearance.

In this study Na2HPO4-Ca(NO3)2 system was used to synthesize hydroxyapatite (HA). Its synthetical method was simple and low in cost. With the physical-chemical characteristic observation and the animal experimentit was proved that HA was pure, with pores ranging from 20 to 200 ?m in diameter.The chemical structure of HA was similar to that of inorganic part of bones.An investigation of the histological changes and osteogenetic effectiveness of HA implanted was conducted and the mechanism of HA osteogenetic effectiveness is discussed. The study will provide scientific basis for the clinical use of HA as bone graft substitute.