The multiple primary carcinoma (MPC) is defined as more than 2 or up carcinomas occured with in same or multiple organs in an individual.Along with the science development and advancement of human society,the life-span of human being has been prolonged,and more of MPC are identified.But the misdiagnosis of MPC as the metastases of primary tumors or missed diagnosis will mislead therapeutic regimens and exacerbate the diseases.Therefore,the accurate differentiation of MPC is becoming increasingly important.This article mainly reviews the epidemiology,diagnostic criteria,etiology,frequent sites of involvement,classification,and diagnostic protocols of MPC.

Glaucoma is a common eye disease which may cause irreversible blindness.This ocular degenerative disease affects retinal ganglion cells (RGCs) and eventually causes optic nerve dysfunction by way of axonal loss.Patients with glaucoma may show characteristic changes of optic disc,damages of visual field and impairment of vision.Detection and evaluation of the impairment of visual field in patients with glaucoma are essential for the diagnosis and estimation of progression of this disease.Numerous techniques have been developed to detect field progression,but no standard has been widely accepted.Assessment Methods including visual field indices,glaucoma hemifield test (GHT),Advanced Glaucoma Intervention Study (AGIS),Early Manifest Glaucoma Trial (EMGT),Collaborative Initial Glaucoma Treatment Study(CIGTS),as well as the strength and limitation of each method were reviewed in this article in order to find out suitable ways to evaluate visual field defects in patients with glaucoma in clinical works and researches.

Objective:To construct an expression vector containing RNA interfering(RNAi) sequence targeting human vitamin D_3 receptor(VDR) protein gene,and to investigate its inhibitory effect on the expression and function of VDR in a human osteosarcoma cell line.Methods: Two small interfering RNA sequences targeting VDR were designed by online screening and were cloned into the expression vector(pSilencer-2.1-U6).Then the products,pSilencer-2.1-U6-VDR1 and pSilencer-2.1-U6-VDR2,were separately transfected into a human osteosarcoma cell line(HOS-8603) by liposome.Western blot was employed to determine their effect on VDR protein expression and 1,25(OH)_2D_3-induced phosphorylation of PKC.Cell counting and MTT were used to evaluate their influence on the inhibitory effects of 1,25(OH)_2D_3 on HOS-8603 cells proliferation.Results: Compared to HOS-8603 cells transfected with control vectors,those transfected with pSilencer2.1-U6-VDR1 or pSilencer2.1-U6-VDR2 had significant decreases in the expression of VDR protein, in the inhibitory effects of 1,25(OH)_2D_3 on the cell proliferation,and in quick phosphorylation of PKC induced by 1,25(OH)_2D_3.Conclusion: The vectors constructed in the present study(pSilencer2.1-U6-VDR1 and pSilencer2.1-U6-VDR2) can significantly suppress the VDR expression in HOS-8603 cells,and block some biological activities of 1,25(OH)_2D_3 mediated by VDR, which paves a way for further study on the biological functions of VDR and vitamin D_3.

Objective:To study the structure of teacher’s app raisal of pupil’s self-regulationMethod:Based on the open que stionnair es that teachers provided of their students’ characteristics, a self-regulation questionnaire of primary school students was developed 736 students were asse ssed by 56 teachersResults:Through exploratory factor analysis and confirmatory factor analysis, four factors, independence and conscientiousn ess, assault and resisting, friendship and obedience, irritability and activenes s, were obtained The ideal reliability and validity were gotConclusi on:In the view of teachers, the self-regulation structure of primary sch ool students includes four factors

Like other mammals,human has obvious circadian rhythm,and light is recognized as the principal circadian synchronizer.Rod/cone photoreceptors of the outer retina and the melanopsin-containing retinal ganglion cells(mcRGCs) of the inner retina mediate non-image forming visual responses including entrainment of the circadian clock to the ambient light,the pupillary light reflex (PLR),and light modulation of activity by means of a set of mcRGCs projecting to the suprachiasmatic nucleus (SCN)through retinohypothalamic tract (RHT).Glaucoma is a group of diseases which cause degenerative changes and loss of RGCs including mcRGCs,so the circadian rhythm of patients with glaucoma will be interrupted.The progress in the study on the effect of glaucoma and experimental hypertension on circadian rhythm was reviewed.

Objective To investigate the relationship between the autoantibody detection and abortion of pregnant women.Meth-ods The dot immunogold method,indirect immunofluorescence and enzyme-linked immunosorbent assay(ELISA)were used to de-tect serum anti-double stranded DNA antibody (dsDNA),anti-smooth muscle antibody (SMA),antinuclear antibody (ANA),anti-endometrial antibody (EMAb),anti-cardiolipin antibody(ACA),anti-sperm antibody (ASAb),anti-ovarian antibody(AoAb).Re-sults Compared with healthy pregnant women,the values of EMAb,ACA,AoAb,ANA and SMA in abortion pregnant women were increased with statistical differences (P <0.05).Conclusion EMAb,ACA,AoAb,ANA and SMA have high correlation with abortion of pregnant women.Confirming the causes of unexplained abortion and prenatal screening are especially important for the pregnant women in the border area.

Adult ; Female ; Humans ; Intestinal Obstruction ; etiology ; therapy ; Postoperative Complications ; etiology ; therapy ; Rectal Neoplasms ; radiotherapy ; surgery

Esophageal cancer is one of the most common malignancies in the world.Surgical treatment is the first choice for the treatment of esophageal cancer because it could radically resect the tumor and significantly improve the patients'condition.Minimally invasive esophagectomy (MIE) was rapidly developed because of its advantages of minimal invasion,small volume of blood loss,slight pain,low complication rate and quick recovery of patients.The extent of lymphadectomy and postoperative survival rate of MIE were comparable to those of traditional thoracotomy.MIE has become the treatment of choice for benign esophageal diseases and early esophageal cancer in some medical centers.However,debate still exists regarding the role of MIE in the treatment of esophageal cancer,particularly given the limitations in the widespread implementation of this technically challenging operation.This review summarized the current status of the use of minimally invasive surgery for the treatment of esophageal cancer and some thoughts on the development of MIE were provoked.

Objective To study the effect of remifentanil precondition on myocardium against ischemia/ reperfusion (I/R) injury. Methods Fifty male SD rats weighing 300-350 g were anesthetized with intraperitoneal 5% pentobarbital 40 mg?kg-1, tracheostomized and mechanically ventilated. Right carotid artery and jugular vein were cannulated for BP monitoring and drug administration. ECG, BP and HR were monitored continuously. The chest was opened and heart exposed via a left thoracotomy. A 6-0 prolene suture was placed around the left coronary artery and a snare was made. The coronary artery was occluded by tightening the snare. Myocardial ischemia was confirmed by the appearance of a regional cyanosis of myocardium, decrease in BP and ST-T changes on ECG. After the surgical procedure a 15-minute stabilization period was allowed. The animals were then randomly divided into 3 groups: Ⅰ control group (CON, n = 9) ; Ⅱ ischemic preconditioning group (IPC, n = 9) and Ⅲ remifentanil preconditioning group which was further divided into 5 subgroups according to the dose of remifentanil (RPC) . In control group the hearts were subjected to 30 min ischemia followed by 120 min reperfusion (I/R). In IPC group the hearts were subjected to 3 episodes of 5 min ischemia in succession at 5 min interval for reperfusion before I/R. In RPC group the animals received 3 periods of 5 min remifentanil infusion at 0.2 (RPC1 , n = 5), 0.6 (RPC2,n = 6), 2 (RPC3 ,n = 8), 6 (RPC4 ,n = 7) or 20 (RPC5 ,n = 6) ?g?kg-1?min-1 at 5 min interval before I/R. MAP, HR and RPP (SP?HR) were recorded before and after I/R. Infarct size (IS) and the area at risk (AAR) were determined by triphenyltetrazolium staining. Results MAP was significantly lower at the end of 30 min ischemia in RPC2, RPC3, RPC4 and RPC5 subgroups than in control group. There was no significant difference in MAP, HR and RPP at the end of 120 min reperfusion among the 3 groups. The infarct size was significantly smaller in IPC and RPC groups than in control group. RPC at 6 ?g?kg-1?min-1 provided best protective effect. The sigmoidal equation of the dose-effect curve was Y = 15.18 + 17.76/ [1 + 10(-2.57-X)]. ED50, was 2.689 ?g?kg-1?min-1.Conclusion Remifentanil and IPC have similar protective effect on the heart against I/R injury.

Objective To find out the factors that influence the mental health of the rural junior middle school students (JMSS).Methods 2406 JMSS in rural areas in Hunan province were assessed,using self-designed Demographic Data Recording Form, Adolescent Self-Rating Life Events Check List, Scale of APGAR, Perceived Social Support Scale,Simplified Coping Style Questionnaire,Eysenck Personality Questionnaire,Self-Esteem Scale and Scale of Mental Health.Results There were no significant difference between JMSS with different gender(P = 0.509 ), family income (P = 0.267 ), occupation of their fathers (P = 0.473 ), occupation of their mothers (P=0.105 ), education background of their mothers (P = 0.266 ).There were statistically significant difference between JMSS of different age (P = 0.000 ), grade (P = 0.000 ), whether their parents going out to work (P = 0.000 ),whether their parents divorced(P = 0.001 ) and education background of their fathers (P = 0.000 ); whether their parents going out to work (r = 0.095 ), life events (r = 0.522 ), family care (r =-0.146 ), the perceived social support (r =-0.186 ), positive coping style (r =-0.020 ), negative coping style (r = 0.369 ) and psychoticism (r = 0.322 ),internal and external(r =-0.132), emotional stability (r = 0.555 ), lie (r =-0.293 ) and self-esteem (r =-0.329)were significantly corrected with psychological health( P ＜ 0.01 ).Except age, grade, whether their parents going out to work and the education background and occupation of their parents,the remaining variables entered the regression equation,which could explained 51.2% of changes of the psychological health(F=227.809, P=0.000).Conclusion In order to promote the development of J MSS mental health, we can give then more care to reduce negative life events in their life,guide them to culture health personality and use active coping styles when encounter difficulties and setbacks through a series of health education, promote the healthy development of their personality.