Objective To estimate quantitatively the relationship between childhood leukemia and extremely low frequency electromagnetic fields (ELF-EMF).Methods Meta-analysis was employed to estimate the relationship between ELF-EMF and childhood leukemia based on 8 relevant epidemiological articles published at home and abroad.Fixed Effect Model Analysis was used to calculate the incorporated odds ratio (ORc) based on homogeneity test.Results The ORc for childhood leukemia associated with ELF-EMF was 1.58 (95%CI =1.24～2.03) with statistical significance (?2=13.11,P

Objective To estimate the relationship of genetic polymorphisms of glutathione s-transferase M1, T1 (GSTM1 and GSTT1) and the susceptibility to childhood acute leukemia. Methods Meta-analysis was employed to estimate the relationship of genetic polymorphisms of GSTM1, GSTT1 and childhood acute leukemia based on relevant epidemiological papers published at home and abroad. Random effect model and fixed effect model analysis were used to calculate the incorporated odds ratio (ORc) based on homogeneity test. Results The ORc and 95% confidence interval for childhood acute leukemia associated with GSTM1 null and GSTT1 null was 1.31(95%CI: 1.01～1.71), 0.98(95%CI: 0.82～1.17) respectively. Conclusion GSTM1 null may be an important host risk factor for childhood acute leukemia, whereas GSTT1 null does not show a significant relationship with the risk to childhood acute leukemia.

In recent years,with the development of neuroimaging and the progress in related clinical studies,people have had a better understanding of posterior circulation ischemia.This article reviews the progress in the causes,mechanisms,clinical manifestations,diagnosis, treatment and prognosis of posterior circulation ischemia.

Objective To evaluate the effective treatment for and prevention of complications. Methods The diagnosis and treatment of 32 patients with acute arterial ischemia of the lower extremity were analyzed (retrospectively). 4 cases were treated with thrombolytic therapy, 28 cases underwent emergency operation, of which 3 cases underwent amputation after embolectomy, and 25 cases were treated by arteriotomy of femoral artery and embolectomy with Fogarty catheter(7 cases underwent concomitant arterioplasty).Results One (patient) in the nonoperative group died; but there was no mortality in the operated group. Limb amputation was done in 3 cases, and limbs were saved in 28 cases. Conclusions For acute arterial ischemia of the lower (extremity), emergency arteriotomy of femoral artery plus embolectomy is the treatment of choice. This (therapeutic) approach can lower mortality and limb amputation rate.

Objective To analyze the structure of microbial community in the bile of patients with obstructive jaundice.Methods From October 2010 to October 2013,117 patients with obstructive jaundice were selected.The results of bile microbial regular culture and anaerobic bacteria culture were both negative.A total of 10 mL bile of each case was aspired and DNA of bile microbial community was isolated.16S rDNA of bile microbial was amplified and underwent terminal restriction fragment length polymorphism (T-RFLP) analysis.Clone libraries were constructed and conducted sequencing and system analysis.Chi-square test was performed for data analysis.Results Among the 117 patients,16S rDNA of 50 cases was positive,and the total positive rate was 42.7 ％.The positive rate of bile bacterial 16S rDNA in stone and tumor cased obstruction was 97.3％ (36/37) and 17.5％ (14/80),and the difference was statistically significant (x2=65.828,P＜0.01).There was no statistically significant difference in the positive rate of bile bacterial 16S rDNA among hilar obstruction,above hilar obstruction and below hilar obstruction,which ware 43.3％ (13/30) and 42.5％(37/87),respectively (P＞0.05).Bile microbial community of obstruction coused by stone was mainly Enterobacteriaceae (Escherichia,Salmonella,Klebsiella,Proteus),Streptococcus (Streptococcus),digestive coccaceae (digestive bacteria genus,peptostreptococcus),Micrococcus branch (Staphylococcus),Propionibacterium (Propionibacterium) and Neisseriabacteria (Acinetobacter).Bile microbial community of obstruction caused by tumor was mainly Enterobacteriaceae (Clay Beth spp,Escherichia,Salnonellatyphi) and Micrococcus branch (Staphylococcus).Conclusion The condition and variety of bile microbial community of patients with obstructive jaundice could be effectively evaluated by 16S rDNA fragment through T RFLP analysis.

ObjectiveTo observe the effect of visible light (white light, red light, blue light) on the expression of reactive oxygen species (ROS), 8-OHdG and hOGG1 in cultured human retinal pigment epithelial (RPE) cells. MethodsCultured human RPE-19 cells (4th-6th generations) were divided into white light,red light, blue light and control group.The illumination was 600 Lux.The cells of experimental groups were exposed to white light or red light for 6, 12, 24 and 48 hours, and exposed to blue light for 1, 3, 6 and 12 hours, while cells of the control group were cultured in foil packaged dishes to avoid light. The levels of ROS expression were detected by 2′, 7′-dichlorofluorescin-diacetate (DCFH-DA), the levels of 8-OHdG protein expression were observed by immunocytochemistry (ICC), and the levels of hOGG1 were measured by western blot. ResultsCompared to the control group, the ROS expression in RPE cells were increased in white and red light group after 12, 24 and 48 hours and in blue light group after 1, 3, 6 and 12 hours (Fwhite light=11. 611, Fred light =6.706, Fblue light =23. 259; P＜0.05 ). Additionally, the ROS expression had a tendency to increase gradually along with exposure time. Compared to the control group, the 8-OHdG expression in RPE cells were increased significantly in both white and red light group after 12, 24 and 48 hours and in blue light group after 1, 3, 6 and 12 hours (Fwhite light =16. 032,Fred light =6. 378, Fblue light =19. 484; P＜0.05). Additionally, the 8-OHdG expression in white and red light group were increased gradually with exposure time but decreased when exposure time was up to 48 hours, while that in blue light group was increased firstly though it started to decrease when exposure time was up to 6hours. Compared to the control group, the hOGG1 expression in RPE cells were increased in white and red light group after 12, 24 and 48 hours and in blue light group after 6 and 12 hours (Fwhite light =15. 121,Fred light=21. 041,Fblue light12. 479; P＜0.05). ConclusionsExposure to white, red or blue light could induce ROS production and DNA oxidative damage in RPE cells in a time-dependent way.Exposure to visible light could switch on self protection of RPE cells against DNA oxidative damage by up-regulating of the hOGG1 expression.

Budd-Chiari Syndrome ; complications ; Humans ; Seizures ; complications

Objective To search for the normal value and developmental regular rule of motor norve conduction in children.Methods One hundred and fourty-nine children aged from 0 to 14 years old were divided into 7 groups in accordance with age. There were 19 pecrsons aged from 20 to 35 years old in adult group. The motor nerve conduction function of median nerve, ulnar perve, tibial nerve and peroneal nerve of every suhject was determined by nerve evoked potential meter.Results The terminal latency of action potential of every nerve is decreased along with growing up of age before 6 years old and increased after 6 years old. The conduction velocity of ulnar nerve is the fastest,then the peroneal nerve and median nerve, that of tibial nerve is the slowest. Median nerve development quicken after 3 months of birth and approch ulnar nerve at the time of 3 years old. Tibial nerye get into fast development period from 3 months to 1 years old and catch up peroneal nerve. The conduction velocity of every nerve extend to adult level in th period of 3~6 years old.Conclusion The every parameler of nervous conduction has a great difference of age in the period of child,particularly in that of infancy. therefore, the normal values should be set up in accordance with proper age groups. This study shows that it's suitable to divide groups in accordance with new-born, 3 and 6 months, 1, 3 and 6 years old. Adult criterion should be used in the children dbove 6 years old.

ObjectiveTo observe the clinical efficacy of acupuncture in treating musculospiral paralyses.MethodSixty patients with musculospiral paralyses were elected to receive acupuncture treatment. The motor function and electromyogram (EMG) were detected after 14-day treatment.ResultOf the 60 patients, 36 were recovered, 21 showed improvement, 3 failed in the treatment, and the total effective rate was 95.0%.ConclusionAcupuncture can produce a significant efficacy in treating musculospiral paralyses, and it benefits the recovery of motor function of the impaired nerve.

AIM: To study the quality standard of Sanqi Capsule s. METHODS:The content of ginsenoside Rg 1 and ginsenoside Rb 1 were dertermined by HPLC-ELSD. RESULTS:Ginsenoside Rg 1 showed a good linear relationship at the range of 1.3?g ～ 6.5?g (r= 0.9994 ). The average recovery o f ginsenoside Rg 1 was 98.30% , and RSD was 1.20% (n=5). Ginseno side Rb 1 showed a good linear relationship at the range of 1.0?g ～ 5.0 ?g (r= 0.9996 ). The average re covery of ginsenoside Rb 1 was 97.12% , and RSD was 1.17% (n=5). CONCLUSION:The method is efficient and accurate wi th a good repeatability and can be used for the quality control of Sanqi Capsule s.