Objective To study the effect of dexamethasone on pulmonary fibrosis model induced by bleomycin in rats and the expression of STAT1 and PDGF in lung tissue,and to discuss the possible mechanism.Methods Forty-five Wistar rats were randomly divided into three groups(15 in each group).They were dexamethasone group(DXM group),bleomycin group(BLM group) and control group(NS group):① The DEX group were intratracheally instilled with belomycin(BLM)(5mg/kg,in 1ml 0.9% NaCl solution),and then were treated with dexamethasone 3mg/kg via celiac injection daily;② BLM group were intratracheally instilled with BLM(5mg/kg),and then were treated with saline 3mg/kg via celiac injection daily;③ NS group were intratracheally instilled with saline(5mg/kg),and then were treated with saline 3mg/kg via celiac injection daily.Five rats in each group were sacrificed at 7,14,and 28 days after intratrachel instillation.Histological changes of the lungs were evaluated by HE stain.The bronchoalveolar lavage fluid(BALF) of right lung was gotten and the cells counting as well as differentiation were figured out.The expression of STAT1 and PDGF protein was assessed by immunohistochemistry.Results(1) The total number of inflammatory cells in BALF in BLM group was the highest at day 7 and diminished at day 14 and 28,which was significant different compared with that of the NS group(P

Objective To evaluate the feasibility and efficacy of laparoscopic tubal anastomosis after tubal sterilization.Methods A total of 27 cases of fallopian tube anastomosis with tubal anastomosis were performed under laparoscopy.After removing the sterilized scar in the tubes the hydrotubation was carried out using Methylene Blue to detect whether the tube was patent.By using 6/0 absorbable thread,we sutured the mesosalpinx with 2 or 3 stitches to close the both ends of the fallopian tube.And then,isthmus-isthmus(1 whole-layer stitch at the 12 o'clock,and then 1-stitch sutures at the serous layer of the 8 and 4 o'clock respectively)ampulla-ampulla(1 whole-layer stitch at the 12 o'clock,and then 1-stitch sutures at the whole layers of the 9,7,5,and 3 o'clock respectively),or isthmus-ampulla(same method as the ampulla-ampulla anastomosis but more closed sutures)was performed.The patients received hydrotubation at the first day after the operation and then 3 to 5 days after the first menstruation.They were followed up for every 6 months till pregnancy.Results In the 27 patients(54 tubes),the rate of patency was 88.9%(48/54).The patent rate in the patients received isthmus-isthmus or ampulla-ampulla anastomosis was 86.5%(32/37)and 100%(15/15)respectively.In the 2 cases of isthmus-ampulla anastomosis,one was patent after the operation,and in the other,the Methylene Blue test showed anastomotic leakage.The hydrotubation performed at the first day after the treatment showed a rate of patent in 25 cases(2.6%,25/27),only two patient showed obstruction of the tube(7.4%,2/27).Follow-up was available in 26 of the patients up to over 6 months,19 of them had intrauterine pregnancy(73.1%,19/26)in 24 months after the procedure,among which 89.5%(17/19)occurred in 12 months;one(3.8%,1/26)patient developed ectopic pregnancy.Conclusions Laparoscopic tubal anastomosis is safe and effective for patients who desire reversal after sterilization.