Objective To observe the effectiveness of the percutaneous transluminal angioplasty (PTA) and percutaneous transluminal stenting (PTS) for central vein occlusion in maintenance hemodialysis patients.Methods From January 2010 to August 2015,a total of 42 patients with center vein occlusion of arteriovenous fistula were treated with maintenance hemodialysis,and the surgery and postoperative conditions,revascularization and improvement of vascular stenosis were observed.Results Among the 42 patients,38 cases were successfully carried out with PTA,and the patency rate was 90.5%(38/42).A total of 32 intravascular stents were placed in 30 patients whose vein stenosis were still greater than 30% after PTA.After surgery,the swelling of the patient receded rapidly and the internal fistula went back to normal.Conclusion PTA and PTS are effective methods for maintenance hemodialysis patients with central vein occlusion,and they could help protecting functional access in patients with autogenous fistulas with smaller wounds and faster effects.

It is generally considered that various regulatory activities between genes are contained in the gene expression datasets. Therefore, the underlying gene regulatory relationship and the biologically useful information can be found by modeling the gene regulatory network from the gene expression data. In our study, two unsupervised matrix factorization methods, independent component analysis (ICA) and nonnegative matrix factorization (NMF), were proposed to identify significant genes and model the regulatory network using the microarray gene expression data of Alzheimer's disease (AD). By bio-molecular analyzing of the pathways, the differences between ICA and NMF have been explored and the fact, which the inflammatory reaction is one of the main pathological mechanisms of AD, is also emphasized. It was demonstrated that our study gave a novel and valuable method for the research of early detection and pathological mechanism, biomarkers' findings of AD.
Algorithms ; Alzheimer Disease ; genetics ; Gene Expression Profiling ; methods ; Humans

Humans ; Laparoscopy ; methods ; trends ; Pancreaticoduodenectomy ; methods

Objective To evaluate the diagnostic value of serum (1-3)-β-D-glucan detection for invasive fungal infection (IFI) in neonates. Methods Eighty-seven neonates who were suspected to be IFI cases in neonatal intensive care unit from May 2008 to January 2010 were enrolled into this study. All subjects had infection symptoms, while did no react to the antibiotics treatment. The diagnosis of IFI was made according to Invasive pulmonary fungal infection diagnostic criteria of children set by Subspecialty Group of Respiratory Diseases, the Society of Pediatrics, Chinese Medical Association and Invasive fungal infection diagnostic criteria for critical patients set by the Society of Critical Care Medicine, Chinese Medical Association. Circulating (1-3)-β-D-glucan levels were determined with GKT-5M set kinetic fungus detection kit. Levels of (1-3)-Β-D-glucan in IFI group and that in the control group were compared; optimal cut-off value was established with receiver operating characteristic (ROC) curve; and the sensitivity and specificity at the cut-off value of 20.0 pg/ml and optimal cut-off value were calculated and compared. Results Among the 87 suspected cases, 59 cases were not diagnosed as IFI and 28 cases were diagnosed as IFI finally. Five patients were confirmed to be IFI; seven cases were clinically diagnosed and 16 cases were still suspected IFI. Among the five confirmed cases, four cases were blood culture positive for Candida parapsilosis, one case Candida albicans positive and two cases both cerebrospinal fluid culture and blood culture positive for Candida albicans. The median levels of (1-3)-β-D-glucan of patients diagnosed as IFI (n=28) was 131.6 pg/ml(18.6-9999.0 pg/ml), which was higher than that of the patients without IFI (8.5 pg/ml, 5.0-34.6 pg/ml)(Z=-5.064, P<0.05). Area under ROC curve was 0.806 (95% CI: 0.725-0.886, P<0.05). The sensitivity (96.43% vs 69.49%) and specificity (72.22% vs 84.21%) for (1-3)-β-D-glucan were different as 20.0 pg/ml and 53.7 pg/ml were used as the cut-off values for diagnosing IFI. Conclusions (1-3)-β-D-glucan level could be used to diagnose IFI of neonates, but further studies are needed to evaluate false-positive rates and its cut-off value in IFI diagnosis.

Objective　To analysis the relation of the diameter of continuous curvilinear capsulorhexis and other factors with the capsular block syndrome.Methods　We not only analyzed the etiology and clinical characteristic of six cases in intraoperative,early postoperative and lately postoperative,but also discussed the method of treatment.Results　(1)When the diameter of CCC was smaller than the one of IOL's optic , the CBS easily happened; (2)When the hoops of the hydroview IOL had a smaller anterior angle and larger optic, the CBS easily happened; (3)When the viscoelestic material and cortex were stayed in capsular or anterior chamber, the CBS easily happened.Conclusion　(1)Generaly speaking the size of the CCC should right on the edge of the IOL's optic part; (2)To hydroview IOL, we should choose the one which had a larger anterior angle and a smaller optic; (3)Viscoelastic material which should be cleaned and there was no the rest cortex stayed in the capsular.

Objective To investigate the influence of bushenhuoxue drug-containing serum on PI3K and Akt signaling pathway in purified retinal ganglion cell (RGCs) in vitro of Sprague-Dawley (SD) rats,and to explore the protective mechanisms of bushenhuoxue recipe on RGCs.Methods At first,bushenhuoxue drug-containing serum was prepared,and the RGCs of SD rats were purified;after the apoptotic model of pressurized and purified RGCs was established successfully in vitro using open pressure control system,RGCs were dealt with 50 g · L-1,100 g · L-1,200 g · L-1 concentration gradient of bushenhuoxue drug-containing serum.Then the subjected cells were divided into normal culture group (N group),control group (C group),50 g · L-1 bushenhuoxue group (50 g · L-1 BSHX group),100 g · L-1 bushenhuoxue group (100 g · L-1 BSHX group),200 g · L-1 bushenhuoxue group (200 g · L-1 BSHX group).Finally,cell apoptotic rate was detected by Annexin V-FITC/PI staining,while real-time quantitative PCR (qRT-PCR) and Western blot were used to detect the mRNA and protein expression of PI3K and Akt in each group respectively.Results The results of qRT-PCR detection showed that PI3K,Akt mRNA expression level in C group (0.04 ±0.01) was decreased compared with N group (1.00 ± 0.04),and the difference was statistically significant (all P＜0.05),while PI3K,Akt mRNA levels in 50 g · L-1,100 g · L-1 and 200 g · L-1 BXHX group (0.18 ±0.01,0.21 ±0.02,0.22 ±0.01,0.36 ±0.01,0.84 ±0.10,1.07 ± 0.17) were increased compared with the C group,and the difference was statistically significant (all P ＜0.05).The Western blot results of each group showed that PI3K,Akt protein expression level in C group was decreased compared with N group,with statistical difference (all P ＜ 0.05),while PI3 K,Akt protein expression levels in 50 g · L-1,100 g · L-1 and 200 g · L-1 BSHX group were increased compared with C group,with staffstical difference (all P ＜ 0.05).Conclusion Bushenhuoxue drug-containing serum may inhibit the RGCs apoptosis induced by pressure,which may be related to the activation of PBK/Akt signal transduction pathway.

Objective To explore the interaction of calcitonin receptor (CTR) gene polymorphisms and environmental factors in the population lived in coal-burning-borne endemic fluorosis areas in Chongqing.Methods A 1 ∶ 1 case-control study was carried out and Duping Township of Wushan County and Xinglong Township of Fengjie County of Chongqing were chosen as the endemic fluorosis areas.The observation subjects were divided into case group 121 cases and internal control group 130 cases.The Alu I polymorphism in the CTR gene was genotyped using the PCR-RFLP procedure.Logistic regression model was used to analyze the environment and genetic factors,and the interaction between genes and environment was determined according to interaction indicators.Results The rate of CC genotype in case group was lower than that of the control group [60.33％ (73/121) vs.74.62％ (97/130)],while the TT genotype was higher than that of the control group[9.09％ (11/21) vs.3.85％(5/130)].Significant differences in Alu I genotypes were observed between groups(x2 =6.57,P =0.037 ＜ 0.05; 95％CI:0.029-0.036).Allele frequencies of CTR genotypes differed significantly between groups(x2 =7.67,P =0.006 ＜ 0.01 ; OR =0.53,95 ％ CI:0.338-0.834).Urinary fluoride level (≥ 1 mg/L) was demonstrated to be a risk factor of fluorosis(OR =1.814,P =0.041 ＜ 0.05).There was a positive interaction(OR =5.530,γ =2.457) between CT + TT genotypes in CTR and the fluorosis environment of the people (urinary fluoride level ≥ 1 mg/L).Conclusions There is a certain type of interaction between CTR gene C/T polymorphism and environmental fluorine content (urinary fluoride ≥ 1 mg/L) in Chongqing population lived in coal-burning-borne fluorosis areas,and the onset of fluorosis is the result of interaction between heredity and environment.

BACKGROUND:Since the first frozen embryo transplantation succeeded in 1983, embryo cryotechnique has been an important component in human assisted reproductive techniques. It is controversial which embryos and blastocysts after cryopreservation is selected.
OBJECTIVE:To compare the birth outcomes and neonatal status of frozen thawed embryos and blastocysts.
METHODS:In frozen thawed embryo group (n=1 273) and frozen thawed blastocyst group (n=471), we compared pregnancy rate, abortion rate, ectopic pregnancy rate, premature delivery rate, average premature gestational weeks, term yield, average ful-term gestational age, newborn sex, birth weight, birth defects and so on.
RESULTS AND CONCLUSION:There were frozen thawed blastocyst thaw cycles in 478 cases, 471 cases of transplantation period (including 7 cases without blastocyst transfer were canceled), 236 cases of pregnancy, 201 cases of delivery. Delivery number was 251, including 140 boys and 111 girls. The third day embryo thawing cycle of freezing and thawing appeared in 1 280 cases, 1 273 cases of transplantation period (including 7 cases of no embryo transplantation were canceled), 415 cases of pregnancy, 343 cases of delivery. The delivery number was 431, including 225 boys and 206 girls. Rate of pregnancy was significantly higher in frozen thawed blastocysts compared with frozen thawed embryos. No significant differences were detected in rate of miscarriage, ectopic pregnancy rate, premature delivery rate, average premature gestational weeks, term yield, average ful-termgestational age, newborn sex, and birth weight between frozen thawed embryos and blastocysts. There was no increase in birth defects between frozen thawed embryos and blastocysts. Results suggested that no significant difference was detected in birth outcomes and neonatal status of frozen thawed embryos and blastocysts. Nevertheless, pregnancy outcome is better in frozen thawed blastocysts than frozen thawed embryos.

Objective To investigate effects of transcranial direct current stimulation on picture naming by those with Broca's aphasia recovering from a stroke.Methods Five patients with Broca's aphasia 6-12 months post-stroke served as their own controls.They all had lesions of the left frontal gyms or the basal ganglia.They received either anodic, cathodic or sham stimulation of the left Broca's area.They were then given a picture naming test.Results The average number of correct namings was 13.13 with anodic stimulation, 9.80 with cathodic and 10.15 with the sham stimulation.Compared with cathodic or sham stimulation, anodic stimulation of the left Broca's area can improve the picture-naming ability of aphasic stroke patients significantly more effectively.Conclusions Anodic stimulation of the left Broca's area can improve the picture-naming of cerebral apoplexy patients with Broca's aphasia.Such stimulation may increase the excitability of the left cortex, suggesting that the left Broca's area and its periphery play a very important role in language recovery after stroke.

Objective To study the analgesia effect and adverse reactions of epidural and subcutaneous multimodal analgesia in thoracotomy esophageal cancer resection operation .Methods Forty patients undergoing elective esophageal cancer resection op‐eration were randomly divided into the epidural and subcutaneous analgesia group (group A) and the subcutaneous analgesia group (group B) ,20 cases in each group .The group A adopted 0 .15% ropivacaine and 0 .00002% sufentanil by continuous pumping infu‐sion before and during operation for continuous analgesia ,then intravenous tramadol was given before closing chest ,tramadol and sufentanil subcutaneous patients self‐control analgesia (PCA)were used after operation for analgesia .The group B was given intra‐venous tramadol before closing chest ,then tramadol and sufentanil patient subcutaneous controlled analgesia after operation were used for analgesia .The scores of the visual analogue scale(VAS) ,comfort scale ,sedative scores ,dose of analgesics ,pressing fre‐quency and pressing frequency ratio of PCA ,vital signs and adverse reactions were assessed at different time periods .Results The VAS scores and pressing frequency of PCA at rest and movement in the group A were remarkably decreased compared with the group B ,while the comfort status score and pressing frequency ratio of PCA were obviously increased ,the differences were statisti‐cally significant(P<0 .05);the occurrence rates of adverse reactions such as the vital signs ,sedative scores ,nausea ,vomitting ,skin itch ,chest distress after operation had no statistically significant differences between the two groups .Conclusion Epidural and sub‐cutaneous multimodal analgesia is a better multimodal analgesia scheme in thoracotomy esophageal cancer resection operation .