Objective To construct the prokaryotic expression vector of mouse CD25 extracellular domain and to express it in E coli.Methods Total RNA was isolated from splenocytes of Balb/c mice.The CD25 extracellular domain gene was amplified by RT-PCR and cloned into the PET-32a vector.A positive recombinant,PET-32a-CD25e,was identified by enzyme cleaving and sequencing before its expression in E.coli,and transferred into E.coli BL21(DE3) plysS for its expression.After purification with Ni+ resin and renaturation in vitro,a relative molecular mass(Mr) of the interesting protein was detected by SDS-PAGE and Wes-tern blotting.Effect of the purified interesting protein on the proliferation of splenocytes from T cell vaccine-immunized syngeneic mice was detected by MTT assay.Results The cloned CD25 extracellular domain gene was identified to be functional by sequencing and expression.The purified interesting protein could significantly induce the proliferation and IL-4 secretion of splenocytes from T cell vaccine-immunized mice in vitro.Conclusion Mouse CD25 extracellular domain gene can be successfully expressed in prokaryotic cells with biological activity,which lays a foundation for further relative studies.

Objective To observe the immunologic effect of lactoferrin on repeated respiratory infection(IRRI) in children.Methods Ninety-eight cases of IRRI were divided into two groups randomly.The control group (48 cases)were treated with routine therapy.The treatment group(50 cases) were treated with lactoferrin based on routine therapy for 2-3 months.T cell subgroup,immunoglobulin and complements were determined before and after treatment.Results Total effective rates in treatment group and control group were 86% and 22.9% respectively.The therapeutic efficacy in treatment group was significantly higher than that in control group(P

Objective To evaluate the clinical efficacy of universal self-locking anatomical plate for acetabulum and pelvis (USAPAP) in the treatment of posterior acetabular fractures.Methods Data of 55 patients with posterior acetabular fractures who were treated with the USAPAP from January 2014 to January 2016 were retrospectively analyzed.There were 39 males and 16 females with an average age of 38.5 years old (range,17-82 years).There were 35 fractures on the left side while the other 20 fractures were on the right side,including 52 fresh cases and 3 old cases.According to Letournel-Judet classification,there were 32 cases of posterior wall,9 cases of transverse and posterior wall,5 cases of anterior column and posterior wall,2 cases of posterior column,2 cases of transverse,2 cases of two columns,1 case of anterior column and posterior hemitransverse,2 cases of Pipkin type Ⅳ.All patients were managed operatively by the USAPAP,which allows simultaneous fixation for two columns and quadrilateral surface fractures through a single Kocher-Langenback approach.The quality of reduction was assessed by Matta's score system.The mean follow-up period was 18.5 months (range,12-24 months).Average operation time was 95 min,and average blood loss was 350 ml.Average operation time of plate and screws fixation was 19 min,and average fluoroscopy times in the surgery was 2 times.The mean time of bony union was 4.3 months.According to the criteria described by Matta,the excellent and good rate of radiological score was 92.7％ (51/55),including 39 cases excellent,12 cases good and 4 cases poor.The excellent and good rate of Merle d'Aubigne-Postel score was 87.3％ (48/55),including 35 cases of excellent,13 cases of good,5 cases of fair,and 2 cases of poor.Heterotopic ossification occurred in 1 patient (Brooker type Ⅱ) at three months postoperatively.One case with Pipkin type Ⅳ fracture underwent total hip arthroplasty due to femoral head necrosis at seven months postoperatively.Complications including wound infection,sciatic nerve injury,screw invade joint,redisplacement of the fracture,avascular necrosis of bone fragment,hardware failure,nonunion or malunion was not found in any case at the latest follow-up.Conclusion The USAPAP through the single posterior Kocher-Langenback approach provides strong and stable fixation for complex acetabular fractures associated with posterior region including posterior wall,both columns and quadrilateral surface.Satisfactory clinical results can be achieved by the use of this method.

Dentinogenesis imperfecta type II(DGI-Ⅱ)is a rare autosomal dominant hereditary disease.DGI-Ⅱ tooth is short and brittle. This article reports the occlusal reconstruction treatment with fixed partial denture and discusses the key points of treatment.

Objective To optimize spray drying process of Anshen bumian granules. Methods By using orthogonal design method, moisture content, powder rate and berberine hydrochloride content were indexes, and optimum technological conditions were determined. Results Proportion of microcrystalline cellulose, lactose and maltodextrin was 2??1??2. The extract was fed in at 6%. Optimum feeding in/out temperature for spray drying is 145 ℃ /85 ℃, liquid velocity was 30 mL??min-1 , and relative density of extract was 1. 15. Conclusion The process is reasonable and practical, has strong stability and good controllability, and it provides a basis for industrialized production.

Objective To evaluate the effectiveness and safety of recombinant human endostatin combined with concurrent chemoradiotherapy versus concurrent chemoradiotherapy for advanced non small cell lung cancer ( NSCLC) . Methods Electronic databases including the Cochrane library, PubMed, the Chinese biomedical literature database, China national knowledge internet(,EMbase,VIP and Wanfang database system were searched,until August,2013. The inclusion criteria was efficacy and safety studies of randomized controlled clinical studies in which recombinant human endostatin combined with concurrent chemoradiotherapy was compared with concurrent chemoradiotherapy alone for patients with advanced NSCLC. Cochrane handbook 5. 1. 0 was applied in evaluating the quality of included trials and RevMan 5. 1. 0 software was used for data analysis.Results Five studies including 217 cases of advanced NSCLC were included. The results of the meta-analysis exhibited that compared with concurrent chemoradiotherapy alone, recombinant human endostatin combined with concurrent chemoradiotherapy could increase effective rate [OR=2. 62,95%CI(1. 41,4. 86),P=0. 002]. But there were no significant differences in clinical benefit rate [OR=2. 08,95%CI(0. 92,4. 73),P=0. 08],one year survival rate [OR=1. 18,95%CI(0. 53,2. 66),P=0. 68], improvement in quality of life [OR=1. 57,95%CI(0. 40,6. 07),P=0. 52],rate of leucopenia [OR=1. 25,95%CI(0. 72,2. 17), P=0.43],radioactive esophagitis [OR=1. 16,95%CI(0. 42,3. 21),P=0. 77] and radiation pneumonitis [OR=2. 47,95%CI (0. 34,17. 68),P=0. 37]. Conclusion Compared with concurrent chemoradiotherapy alone,recombinant human endostatin combined with concurrent chemoradiotherapy may be more effective for advanced NSCLC,whereas improvement of life quality and toxicities are similar. For the quality restriction and possible publication bias of the included studies,more high quality randomized controlled trials are required to further verify this conclusion.

Objective To preliminarily screen the neoplastic stem cell (NSC) related surface markers combination and to under-stand the NSC distribution in hepatoblastoma(HB) .Methods The children cases of HB undergone the surgical therapy in the Jian-gxi Provincial Children′s Hospital were selected .The immunohistochemical method was adopted for observing the expression and distribution of NSC-related markers CD34 ,Thy-1 ,c-kit ,CD56 and stem cell factor(SCF) in the HB tissue and the normal hepatic tissue away from the edge of tumor tissue 3cm outside .Results Thy-1 and c-kit were sporadically distributed in the HB tissue and mainly focued on the portal area ,but did not exressed in the normal liver tissue ;the expression of CD34 and SCF in HB was signifi-cantly higher than that in the normal liver tissue(P<0 .05) ,in which CD34 was mainly distributed in the endothelial system and SCF was mainly expressed in the portal area ;CD56 was expressed in the tissue of the clustered nerve fibers ,the expression differ-ence between them had no statistical significance (P>0 .05) .Conclusion The different NSC related surface markers are distributed in the HB tissue and focus on the specific areas .The positive cells of Thy-1/c-kit expression may play a role in the HB occurrence .

AIM　To determine whether O-β -D-fructofuranosyl-〔(2→1 )-O-β-D-fructofuransyl〕4α-D-glucopyranoside (inulin-type hexasaccharide, IHS), a monomer extracted from the roots of Morinda of ficinalis How, has antidepressant action. METHODS Fo rced swimming tests in mice and rats and differential-reinforcement-of-low-r ate 72 second schedule (DRL 72 s) in rats were used. RESULTS In the forced swimming test in mice, IHS (80 mg*kg-1, po), like the effe ct of clinically effective antidepressant desipramine (10 mg*kg-1, ip)， produced significant decrease in immobility time. IHS (20 mg*kg-1，po ) also elicited significant decrease in immobility time in forced swimming test in rats, which was comparable to the effect of desipramine (40 mg*kg-1, po). Moreover, in the DRL 72 s in rats, IHS (5～10 mg*kg-1, ip), s imilar to desipramine (5 mg*kg-1, ip), elicited significant increase in reinforcers. CONCLUSION These findings demonstrate that IHS has antidepressant action and is an effective component extracted from the root s of Morinda officinalis How.

Objective To analyze the clinical characters,treatment and prognosis of primary malignant tumor in vagina.Methods A retrospective analysis of 42 patients diagnosed with primary malignant tumor in vagina in Peking Union Medical College Hospital(PUMCH)between Jan 1984 and Aug 2006 was performed.Results Primary malignant tumor accounted for 0.98%(42/4286)in the total gynecological malignant tumors during that period in PUMCH.According to the International Federation of Gynecology and Obstetrics(FIGO)staging system,19 cases were at stage Ⅰ,12 cases at stage Ⅱ,5 cases at stageⅢ,and 6 cases at stage Ⅵ.Thairteen cases were squamous carcinoma,13 cases were malignant melanoma,8 cases were adenocarcinoma.3 case8 were yolk sac tumor and 5 cases were other types.The majority of patients were treated with surgery combined with radiotherapy and chemotherapy.Up to August 2007,19 cases survived.18 cases were dead and 5 casefl were lost.The longest follow up was 10 years,with the median time of 2 years.The overall 2-year SUrvival rate was 60.6%.For stage Ⅰ,stage Ⅱ, and stage Ⅲ-Ⅵ,the 2-year survival rates were 71.3%.58.3%and 29.6%respectively.The 2-year survival rate of patients with squamous carcinoma Was 46.8%,malignant melanoma 72.9%,adenocarcinoma 20.0%and patients with yolk sac tumor were all alive tumor-free after 6-10 years'follow up.Conclusions The prognosis of primary malignant tumor in vagina is affected by clinical stage and histological type.A8 to malignant melanoma,radical surgery combined with chemotherapy and immunotherapy produce good effects.Patients with yolk sac tumor can be cured only with chemotherapy.As to other types,more treatment experiences are needed.

Objective To investigate the scope of application of precise hepatectomy and its value.Methods The clinical data of 112 consecutive patients with liver neoplasm who received hepatectomy at Renji Hospital from November 2006 to March 2009 were retrospectively analyzed.Precise hepatectomy technique was applied to 88 patients(precise group),whereas pringle maneuver was applied to the rest 24 patients(prince group).Patients in precise group had undergone lobectomy,segmentectomy or local resection,while patients in pringle group received segmenteetomy or local resection.The perioperative conditions of patients in the 2 groups were compared via Fisher exact probability and l test.Results No perioperative mortality,hepatic failure,reoperation due to massive hemorrhage or bile leakage was observed.The blood transfusion rate,blood loss,postoperative total bilirubin(Tbil),prothrombin time(PT)were 7%(2/29),220 ml,20 μmol/L,13 seconds in patients who received segmentectomy and local resection in precise group,and were 4%(1/24),210 ml,19μmol/L and 13 seconds in patients who received segmentectomy and local resection in pringle group,with no significant difference(t=0.248,0.263,0.246,P>0.05).The operation time,postoperative white blood cell (WBC)count.alanine aminotransferase(ALT)value and fever incidence were 60 minutes,7.5×10~9/L,66 U/L,10%(3/29)in patients who received segmentectomy and local resection in precise group,and were 15 minutes,14.0×10~9/L,335 U/L and 42%(10/24)in patients who received segmentectomy and local resection in pringle group,with significant difference(t=4.962,4.961,4.959,P<0.05).In precise group,the blood transfusion rate,postoperative WBC count,ALT value.PT and fever incidence were 9%(4/45),8.3×10~9/L,153 U/L,17 seconds and 13%(6/45)in patients who received Iobectomy,and were 12%(5/43),8.2×10~9/L,133 U/L,14 seconds and 14%(6/43)in patients who received segmentectomy or lncal resection,with no significant difference (t=1.652,1.225,1.236,P>0.05);the blood loss,operation time and postoperative Tbil level were 350 ml,250 minutes and 32μmol/L in patients who received lobectomy.and were 240 ml,150 minutes and 21 μmol/L in patients who received segmentectomy or local resection(t=4.915,4.967,4.829,P＜0.05).Conclusions Precise hepatectomy can decrease damage to patients,but it should be applied in selected patients according to the tumor location and the excision range.Precise hepatectomy is recommended to be applied in lobeetomy.