0.05).In 25.28% of the population in the Second Songhua River region,the hair Hg content exceeded 1 mg/kg.In 21.85% and 16.67% of the population of Wujiazhan town and Songyuan city,the hair Hg content exceeded 1 mg/kg.Conclusion In the investigated area,the level of hair mercury shows a downtrend,but there still is health risk from mercury exposure.

The authors first describe the current situation of cooperative medical care in China, pointing out that due to low levels of guarantee, difficulties in fundraising and insufficient government reimbursement, cooperative medical care in rural areas have come across many hardships. It is, therefore, imperative to set up as soon as possible a health security system for people in rural areas. Firstly, it is necessary to break up the dual social security structure of urban and rural areas and set up a model with transitional goals based on the actual situation of the country. Secondly, it is suggested that security taxes begin to be collected, bringing the health security for people in rural areas into line with the social security framework so as to promote the health security for people in rural areas without lowering the level of social security in urban areas.

Objective To compare the therapeutic effects of recurrent pterygium treated by microsur- gical management.Methods Sixty-two cases(67 eyes)with recurrent pterygiumwere randomly divided into limbal stem cell autograft transplantation comblined with mitomycin C(34 cases38 eyesand limbal stem cell autograft transplantation(28 cases29 eyes)The post operative follow-up period was 6 to 30 months.Re- suits One eye recurrence was noted in the trial groupthe recurrent rate was 2.63%Three eyes recurrence was noted in the control groupthe recurrent rate was 10.34%There was statistical significant difference be- tween two groups(P0.05).Conclusion Limbal stem cells autograft transplantation combined with mitomycin C can decrease the recurrent rate.It is an ideal methods of recurrent pterygium surgical procedureis worth spreading.

Aim To investigate the NIH3T3/STAT3CA cell proliferation ability and the STAT3 transcriptional activity affected by PTPMeg2 . Methods MTT assay and xenograft nude mice model were used to investigate the NIH3 T3/STAT3 CA cell proliferation inhibited by PTPMeg2 in vitro and in vivo. Co-immunoprecipitation assay was used to measure the interaction between PT-PMeg2 and STAT3CA. STAT3 transcriptional activity was measured by dual-luciferase assay. Results The NIH3 T3/STAT3 CA cell proliferation ability was signifi-cantly inhibited by PTPMeg2 in vitro and in vivo com-pared with the control group ( P <0.05 ) . The tran-scriptional activity was increased by PTPMeg2 , but not the PTPMeg2 mutant (PTPMeg2C515S) and the ShPT-PMeg2 . Conclusion PTPMeg2 plays a role in inhibi-ting the proliferation ability of NIH3 T3/STAT3 CA cells through inhibiting the STAT3 transcriptional activity.

Objective To study the protective effect and mechanism of safflower solution on warm ischemia reperfusion injury(IRI) of liver in rats.Methods Male Sprague-Dawley rats were randomly divided as 4 groups: Group S(sham group);group I/R(IRI group);group IPC(ischemic preconditioning group);group SPC(safflower solution preconditioning group).The rats were sacrificed at 24 h after reperfusion,serum levels of ALT and AST were measured and HE staining of liver tissues were made to detect rat liver histological changes and grade liver IRI(Suzuki score);apoptosis were monitored by TUNEL;TNF-?,MIP-2 and ICAM-1 mRNA of liver were measured by RT-PCR;NF-?B gene products of liver were detected by Western blotting.The mean value of all the assay tests was compared.Results After 24 h reperfusion,compared with group I/R,the liver function(ALT and AST) in group SPC and group IPC was significantly improved(P

Objective To investigate the clinical characteristics of stroke in young patients with cardiac myxoma.Methods Medical records of young patients (aged between 18-44 years) diagnosed with cardiac myxoma in Beijing Anzhen Hospital affiliated to Capital Medical University from January 2005 to March 2016 were retrospective reviewed.Results A total of 117 cases were included (85 female and 32 male)with the average age (36 ±7)years old.Most myxomas (83.8％) were located in the left atrium,7.7％ were in the right atrium,3.5％ were in the both atriums,2.6％ were in the left ventricle,and a few were in the left atrium plus left ventricle and in the right ventricle.Of all the patients,24 (20.5％) (16 women and 8 men) were complicated with cerebral infarction.Among them,3 patients were with lower extremity arterial embolisms.Two patients were with cerebral hemorrhage.The cerebral infarction mainly involved in the distribution area of the internal carotid artery.Infarctions involving 2 or more cerebral vessels were found in 4 cases.Most subjects (58.3％) manifested with hemiplegia,and some (18.2％) with syncope.The proportion of the left atrial myxoma in patients with cerebral infarction (100.0％) was significantly higher than those in patients without cerebral infarction (85.1％,P =0.044).Subjects with tumor diameter less than 3 cm were more frequently complicated with cerebral infarction (37.5％ vs 13.8％,P =0.009).A logistic analysis showed that the odds ratio of myxoma with tumor diameter less than 3 cm for cerebral infarction was 3.750 (95％ CI 1.343-10.470).Conclusions Cardiac myxoma is more common in young women,and often complicated with cerebral infarction.The infarctions are mainly distributed in internal carotid artery system,and some are involved in multiple vascular systems.The incidence of stroke is associated with the position of the myxoma.Smail-size myxoma cannot be ignored for its risk of stroke.

Objective To learn growth status of 6 to 11 years old children and to analyze the factors that affect the growth and development of primary school students in Changchun City.Methods A total of 3045 students from one publich primary school in Changchun City were enrolled in this investigation in October 2011.Their height,body weight,chest circumference and vital capacity were measured,and the related factors were analyzed.The optimal scaling regression was used for data analysis.Results About 2590 questionnaires were completed,1319 of which were from boys and 1271 from girls,resulting in an effective rate of 85.1％.Vital capacity were increased with age,height,body weight and chest circumference.In the the optimal scaling regression,height,body weight,chest circumference and vital capacity showed statistically significant difference (F values were 371.437,110.463,101.254 and 121.540,respectively; all P ＜ 0.05).Age and gender were the most important factors of the growth.The height of children was correlated with one-child family,household income,milk and meat intake (F values were 10.777,6.855,3.905 and 5.163,respectively; all P ＜ 0.05).In addition,children's body weight was correlated with family income,breakfast,sweets,fried foods,fish,meat,average daily sleeping time and average daily physical exercise time (F values were 3.040,13.198,10.799,4.036,4.298,18.103,7.827 and 13.602,respectively; all P ＜ 0.05).Chest circumference was related to breakfast,fish or meat intake,average daily sleeping time and average daily physical exercise time (F values were 10.249,4.525,20.560,7.371 and 14.124,respectively; all P ＜0.05).Meat intake and average daily sleeping time were positively correlated with children's vital capacity (F values were 12.180 and 4.833,respectively; both P ＜ 0.05).Conclusions The growth and development of primary school students in Changchun city is in line with the laws of children's growth and development.Eating habits,average daily sleep time and physical exercises could be the main factors affecting children's growth.

Objective To evaluate the effects of different ratios of medicine dosage for sevoflurane and propofol on postoperative cognitive function in aged rats.Methods Sixty healthy male Wistar rats,aged 18-20 months,weighing 600-650 g,were divided into 6 groups (n =10 each) using a random number table:control group (group C),sevoflurane anesthesia group (group S),propofol anesthesia group (group P) and different ratios of mmedicine dosage for sevoflurane and propofol groups (group SP1,group SP2 and group SP3).Normal saline 10 ml was infused intravenously in group C.Group S inhaled 3.1％ sevoflurane.Propofol was infused intravenously at a rate of 40 mg · kg-1 · h-1 in group P.In group SP1,2.4％ sevoflurane was inhaled,and propofol was intravenously infused at a rate of 10 mg · kg-1 · h-1.In group SP2,1.8％ sevoflurane was inhaled,and propofol was intravenously infused at a rate of 20 mng · kg-1 · h-1.In group SP3,1.2％ sevoflurane was inhaled,and propofol was intravenously infused at a rate of 30 mg · kg-1 · h-1.Duration of anesthesia was 2 h in all the groups.After loss of righting reflex,open reduction and internal fixation was performed after tibial fracture was induced in the other five groups except group C.At 1 day after anesthesia,Y-maze test was performed,and the time spent on the novel arm and total number of entries into each arm were recorded,and fear conditioning test was carried out for determination of the rate of freezing time to reflect the cognitive function.The rats were sacrificed after behavioral testing,and the hippocampus was removed for determination of occludin,matrix metalloproteinase-2 (MMP-2) and MMP-9 expression by Western blot.Results Compared with group C,the time spent on the novel arm was significantly shortened,the total number of entries into each arm and rate of freezing time were decreased,the expression of occludin was down-regulated,the expression of MMP-2 and MMP-9 was up-regulated in the other five groups,and the most unmarked change in the indices mentioned above was found in group SP2 (P＜ 0.05 or 0.01).Conclusion Different ratios of medicine dosage for sevoflurane and propofol can induce postoperative cognitive decline,and inhaling 1.8％ sevoflurane and infusing propofol 20 mg · kg-1 · h-1 produce little influence on postoperative cognitive function in aged rats.

Objective To evaluate the clinical significance of serum levels of ProGRP, TPS and NSE in diagnosis and therapy monitoring in small cell lung cancer patients. Methods The levels of serum ProGRP, TPS and NSE in 51 SCLC patients (SCLC group), 60 benign pulmonary disease patients (benign disease group ) and 60 healthy people (healthy group ) were determined using chemiluminescent immunoassay, ELISA and electrochemiluminescent immunoassay respectively. Blood samples were collected and detected prior to therapy, before the second course of chemotherapy and the third course of chemotherapy consecutively in all the 51 SCLC patients. Results The serum ProGRP, TPS and NSE concentrations prior to chemotherapy in limited stage SCLC (LSCLC) were 136. 9(22.8-631.7)ng/L, 78. 2(56.4-114.6) U/L and 28.1(20.9-46.1)μg/L, respectively; And in extensive stage SCLC patients (ESCLC) were 1 106.6(41.2-2161.1) ng/L, 230. 9( 143.5-259.0) U/L and 81.1 (34.3-140.0)μg/L, respectively. The serum concentrations of the 3 markers in benign disease group were 19. 7 ( 9. 5-29. 1 )ng/L, 48. 7 ( 17.9-95.4) U/L and 12. 1(1.2-13.9) μg/L; and in healthy group were 20.3(10.7-30.6) ng/L, 50.3(19.5-70.7) U/L and 11.7 (1.1-13.4)μg/L, respectively. The Kruskal-Wallis test showed significantly statistical difference in different groups of the 3 tumor markers, Chi-Square were 51. 368,36. 532 and 81. 645( P ＜0. 01 ). Significant statistically differences showed when the concentrations of the 3 marks of the 2 control group were compared with that of the LSCLC group ( U =491, 827, 609 and 476, 831, 585,respectively, P ＜ 0. 05 ). Differences were also statistically significant when the 2 control group compared with that of the ESCLC group ( U = 314,532,456 and 302,553,430, respectively, P ＜ 0. 01 ). The AUC of ProGRP was 0.832 +0.029(95% CI:0.774-0.890). When cutoff value of ProGRP set as 37.7 ng/L, the diagnostic sensitivity, specificity, positive predictive value, negative predictive value and Youden's index were 71% (36/51), 97% (116/120), 90% (36/40), 89% ( 116/131 ) and 67%, respectively; show good detection performance. The sensitivity increased to 92%, 86%, 92% and 88%, when combination detection of ProGRP + TPS + NSE, ProGRP + TPS, ProGRP + NSE and TPS + NSE were used, and the specificities were 77%, 77% , 92% and 77% accordingly. The Fridman test showed significantly statistical difference in the 3 tumor markers at different stages of treatment, x2 were 49. 120, 10. 614 and 44. 392, P ＜0. 01. After the first chemotherapy course, all the tumor marker levels except TPS decreased significantly in comparison with the pretreatment concentrations. However, only ProGRP levels showed a progressive drop during the two consecutive courses of therapy, and the median concentrations were 68.0 ( 18. 6-158.4 ) and 21.0( 14. 9-63.5) ng/L (compared to the level before therapy,Z=-4. 889 and -5. 594, P ＜0. 01 ). The median of serum TPS increased slightly to 105.2 (54. 1-181.2 ) U/L after the first chemotherapy course (Z=-1.248, P＞0.05), and decreased significantly to 79.0(48.7-155.3) U/L after the second chemotherapy course (Z=-2.484, P＜0. 05 ). As to the NSE, the median concentration decreased to 11.8(8.0-16.0)μg/L after the first chemotherapy course ( Z= - 5. 568, P ＜ 0. 01 ). However, the median was 10. 6(9.0-12.7)μg/L, which showed no significant decrease after the second chemotherapy course (Z=-1.851, P＞0.05).Forty-six SCLC patients evaluated as clinical remission ( 3 CR and 43 PR) after the second chemotherapy course, among them there were 38 patients (83%) with normal serum ProGRP, TPS and NSE level ( 19 patients) or with only 1 abnormal tumor level ( 19 patients). There were only 2 patients with all abnormal serum ProGRP, TPS and NSE level, and both patients were evaluated as clinical PD. Two patients with 2 abnormal tumors results were classified as SD, the only 1 patient without therapy evaluation also had 2 abnormal tumor marker results. Conclusions The serum ProGRP, TPS and NSE are valuable tumor markers for diagnosis and treat monitoring of SCLC, particularly the ProGRP + NSE shows the highest clinical value. Combing detection of the 3 tumor markers are valuable for therapy monitoring and prognosis in SCLC patients.

AIM:To investigate the effects of high plasma triglyceride (TG) caused by apolipoprotein C Ⅲ( ApoC Ⅲ) transgene on the occurrence and development of abdominal aortic aneurysm ( AAA) .METHODS:The animal models of hypercholesterolemia and hypercholesterolemia combined with hypertriglyceridemia were established by feeding high-fat diet to LDLR-/-and ApoC Ⅲ+LDLR-/-mice, respectively.AAA was induced in these mice by pancreatic elastase. By evaluating the incidence of AAA, relative maximal abdominal aortic diameter, disruption of the elastic lamellar structure and expression of matrix metalloproteinases ( MMPs) in the aorta walls of the AAA, the occurrence and development of AAA were compared in LDLR-/-and ApoC Ⅲ+LDLR-/-mice fed with either chow diet or high-fat diet.In addition, an in vitro TNF-α-induced aneurysmal microenvironment model on vascular smooth muscle cells ( VSMC) was used to study the impact of triglyceride-rich lipoproteins ( TRLs) from mice with normal or high contents of ApoCⅢon elastin protein expres-sion.RESULTS:Feeding the high-fat diet aggravated the severity of AAA in the LDLR-/-mice.ApoC Ⅲ+LDLR-/-mice fed with high-fat diet had less severe AAA than LDLR-/-mice fed with high-fat diet.TRLs inhibited degradation of VSMC elas-tin protein induced by TNF-α, and in vitro TRLs from the mice with high content of ApoC Ⅲ, compared to those with nor-mal content of ApoC Ⅲ, had better inhibitory effect on the degradation of elastin.CONCLUSION:High plasma TG caused by ApoC Ⅲtransgene alleviates AAA of the LDLR-/-mice induced by elastase and high-fat diet.The effect is probably attrib-uted to the hypertriglyceridemia caused by ApoC Ⅲtransgene.