CD4 + CD25 + regulatory T cells(Treg) are thought to be a subgroup of mature CD4 + T cells.Forkhead winged helix transcription factor-3 (Foxp3)is specifically expressed on them and plays a key role in their development and function. CD4 + CD25 + Treg cells can maintain the stabilization of internal environment by two principal pathways to suppress the immunological function: the direct suppression of the target cells by cell-contact and the secretion of suppressor cytokines.At present,it has been considered that decreased number and dysfunction of CD4+ CD25+ Treg cells are closely related to pathogenesis of autoimmune disease. Recent findings show that CD4+ CD25+ Treg cells play an important role in pathogenesis of idiopathic thrombocytopenic purpura.

Studies have shown that IL-24 is the only cytokine capable of inhibiting tumor growth and neovascularization as well as stimulating immune system. IL-24 exerts its inhibition effects through pathways independent of p53, Rb, p16 and other tumor suppressor genes and has no effect on normal cells. IL-24 has emerged as a hot topic in cancer therapy research.

Objective To investigate the effect of silencing of ataxia-telangiectasia mutated (ATM) expression by plasmid-mediated RNA interference on the radiosensitivity of human lung adenocarcinoma A549 cells.Methods Eukaryotic expression plasmid containing ATM small interfering RNA (siRNA) (pSilencer2.1-ATM),as well as pSilencer2.1-nonspecific,was constructed.Lung adenocarcinoma A549 cells were divided into positive group,negative group,and control group to be transfected with pSilencer2.1-ATM,pSilencer2.1-nonspecific,and no plasmid,respectively.The mRNA and protein expression of ATM was measured by RT-PCR and Western blot,respectively.The change in cell radiosensitivity was observed by colony-forming assay.Cell cycle and cell apoptosis were analyzed by flow cytometry.Results The eukaryotic expression plasmid containing ATM siRNA was successfully constructed.The RT-PCR and Western blot demonstrated that the expression of ATM was down-regulated in the positive group.The sensitization enhancement ratios (D0 ratios) for the positive group and negative group were 1.50 and 1.01,respectively.The flow cytometry revealed that the proportions of A549 cells in G1 and G2/M phases were significantly lower in the positive group than in the control group (51.27％ vs 61.85％,P =0.012;6.34％ vs 10.91％,P =0.008) and that the apoptosis rate was significantly higher in the positive group than in the control group and negative group (49.31％ vs 13.58％,P=0.000;49.31％ vs 13.17％,P=0.000).Conclusions Silencing of ATM expression may increase the radiosensitivity of human lung adenocarcinoma A549 cells,probably by affecting the cell cycle and promoting cell apoptosis.

Objective To investiGate the efficacy of three-dimensional conformal radiotherapy( 3-DCRT)combined with concurrent S-l for locally advanced esophaGus carcinoma in the elderly. Methods Fifty-four elderly patients with locally advanced esophaGus carcinoma were randomly divided into test Group(27 cases treated with 3-DCRT combined with S-l)and control Group(27 cases treated with 3-DCRT alone). DiaGnosis in all cases was confirmed by patholoGy. Results The complete remission rate and overall efficiency rate in test Group were 62. 96% and 85. l9% respectively,and 33. 33% and 59. 26% in control Group(χ2 =4. 75,P=0. 029;χ2 =4. 52,P=0. 033). All 23 patients with dysphaGia in test Group were in remission,and l6 of 22 patients with dysphaGia in control Group were in remission,and there was statistical siGnificant difference between two Groups(χ2 =7. 24,P=0. 007). The one-and two-year survival rates in test Group were 74. l% and 54. 8%respectively,and 55. 6% and 36. l% in control Group(χ2 =3. 9l,P=0. 047;χ2 =3. 98,P=0. 046). Toxicities of Grade 0-Ⅱ in both Groups were similar,and there was no statistical siGnificant difference(χ2 =l. 08,P=0. 299). Conclusion The complete remission rate,overall efficiency rate and one-and two-year survival rates of 3-DCRT combined with concurrent S-l were siGnificant hiGher than 3-DCRT alone in the treatment for the elderly patients with locally advanced esophaGus carcinoma. And ti’s adverse effects were well tolerated.

ObjectiveTo compare children's resilience and peer relationship in divorced and complete family,and explore the moderating effect of psychological resilience between family structure and peer relationship.Methods208 children from divorced family and 465 children from complete family were surveyed.Results(1)There were significant differences in children's resilience(divorced family (3.58±0.73),complete family(3.83±0.59),t=-2.765,P=0.006) and peer relationship(divorced family (3.47±0.72),complete family(3.73±0.59),t=-2.069,P=0.042) between complete and divorced family.(2) Family structure had remarkable negative correlation with resilience and peer relationship(r1=-0.19,r2=-0.20),and resilience had positive correlation with peer relationship(r=0.43).(3)The moderating effect of resilience between family structure and peer relationship was significant(β=0.641,P<0.05).ConclusionParent divorce has negative influence on children's resilience and peer relationship.Furthermore,the relationship of family structure and peer relationship is mediated by resilience.The negative influence of parent divorce on peer relationship is not significant among children with high resilience,while it is significant on children with low resilience.

OBJECTIVE:To provide reference for rational use of glucocorticoid in the clinic. METHODS:The glucocorti-coid outpatient prescriptions collected from clinical departments of a hospital during Jan. 2013 to Jun. 2015 were analyzed statisti-cally in respects of glucocorticoid use,department distribution,DDDs,distribution of prescription diagnosis,etc. RESULTS:Of 15 000 prescriptions,there were 1 562 glucocorticoid prescriptions,with utilization rate of 10.4%;189 prescriptions were recog-nized as irrational ones,with irrational rate of 12.1%. The proportion of glucocorticoid in otorhinolaryngology department was the highest(27.66%),and irrational drug use was the highest in pediatrics department(16.12%);Dexamethasone injection was the most widely applied(44.88%);most of glucocorticoid prescriptions were used for acute bronchitis and bronchitis(267 pre-scriptions). CONCLUSIONS:The irrational glucocorticoid application has existed in the hospital,which deserved special atten-tion. Hence,prescription check and evaluation should be strengthened to promote the safety and efficacy of glucocorticoid in clini-cal application.

Understanding of the classification of intracerebral hemorrhage may help to better manage the patients with intracerebral hemorrhage.Selecting the appropriate diagnosis and treatment measures as well as preventive strategies for different subtypes in order to improve the prognosis of intracerebral hemorrhage and prevent the recurrence.This article reviews the present common classification methods of intracerebral hemorrhage studied and reported in the world.

Objective To present our experience with laparoscopic pyloromyotomy and laparoscopically assisted endorectal pull through for Hirschsprung's disease (HD) in newborns and infants.Methods Twenty newborns or infants with hypertrophic pyloric stenosis and HD,age ranged from 16～120 days and weight from 2.7～8 kg.Under epidural anesthesia and tracheal intubation,carbon dioxide was insufflated into abdominal cavity via a Veress needle,reaching an insufflative pressure of 12～14 mm Hg.One umbilical and two or three subcostal canulas for instrumentation were demanded.The pyloromyotomy was performed in patients with hypertrophic pyrolic stenosis and in patients with HD the affected colon and rectum were mobilized by dissecting the supplying vessels and cutting the peritoneal reflection,and pull-through procedure was carried out.Results The operation time was 25～150 minutes with rare complications.Oral feeding was resumed on the following day postoperation.The patients recovered and discharged from hospital 3～7 days after operation.Conclusions Laparoscopic pyloromyotomy and laparoscopic endorectal pull-through for HD in newborns and infants are safe and feasible.The advantages of this procedure include minimal trauma to abdomen,rapid restoration of stomach and bowel function and quick rehabilitation.

Objective To review the preliminary experience of primary laparoscopic pull-through for Hirschsprung's Disease in children.Methods Since May 2000,25 patients with Hischsprung's disease underwent Laparoscopic Pull-Through. The oldest age was 6 years old and the youngest was 20 days. All patients underwent anesthesia and tracheal intuition, carbon dioxide was insufflated into abdominal cavity via a Veers needle, reaching a insulation pressure of 1.33～1.86 kPa (10～14 mmHg). One umbilical camera port one-instrument port at left abdomen and one instrument port at right abdomen were made.Results The mean operative time was 165-min. Oral feeding was started 3 days postoperatively. The average hospitalization was 9 days (7～10 days).No complication was encountered.Conclusions Primary laparoscopic Pull-Through for Hirschsprung's Disease in children is safe and feasible.

Objective To observe feature of clinic and imageology in patients with unstable angina pectoris after radiation therapy to chest. Methods The study enrolled 58 patients who had unstable angina pectoris. Twenty-eight patients were in the postradiation therapy to chest group, 30 patients were in the common unstable angina pectoris group. All patients underwent multislice spiral CT(MSCT) examination and coronary angiography (CAG). After one year follow-up, the levels of brain natriuretic peptide (BNP) and ventricular wall motion score index (WMSI) were measured , the incidence of cardiovascular events were observed in all patients. Results Calcific, multi-vessel, thrombotic disease and dissection were significantly different between the two groups, when one year follow-up , the levels of BNP were higher in the postradiation therapy to chest group than those in the common unstable angina pectoris group [ (234.31 ± 121.39) ng/L vs (124.74 ±37.81) ng/L] WMST, incidence of the first heart failure, angina pectoris recurrence and revascularization were significantly different too (P< 0.05 ). Conclusions The complex lesions are major in the postradiation therapy to chest. Moreover, because radiation injures the heart valves and myocardium,these patients' long-term prognosis are worst.