Objective:To know the amount of literacy and scores of behavior problems of the grade 2-5 pupils in the primary school,and explore the correlation between them.Methods:A total of 673 pupils from grade 2 to 5 in primary school of Nanhai distric,Foshan City were enrolled.Their amount of literacy was assessed with the Primary School Literacy Assessment Scale,and their teachers were assessed with the Conners Teacher Rating Scale.Results:The amount of literacy in different grades,genders and parents' education levels were significantly different among the primary school students (P ＜0.05),girls's scores were higher than boys's [(2312 ±719) vs.(2184 ±734),P ＜ 0.05],students whose parents of high education level were higher than those of low education level (P ＜ 0.05).Scores of hyperactivity,inattentive-passive behaviors and conduct problems in different grades and genders were significantly different.Scores of Grade 2 pupils were higher than others,and boys's scores were higher than girls' s (P ＜ 0.05).Three factors of CTRS,including conduct problems (r =-0.31),hyperactivity (r =-0.43) and inattentive-passive behaviors (r =-0.36) and hyperactivity index(r =-0.38) had significantly negative correlation with the amount of literacy (P ＜ 0.001).Regression analysis showed that hyperactivity (β =-22.27,P ＜ 0.01) and conduct problems (β =-17.69,P ＜ 0.01) could significantly explain the amount of literacy (R2 =0.81).Conclusion:It suggests that hyperactivity and conduct problems are moderately associated with the amount of literacy in primary pupils.

Objective To analyze the correlation factors between CT imaging features of pulmonary embolism(PE)and clinical severity stratification,to explore the value of CT pulmonary angiography (CTPA)in acute PE severity stratification.Methods According to the clinical severity,48 patients with acute PE proved by CTPA were classified into two groups,including 21 critical and 27 non-critical patients. Embolism index,ratio of central pulmonary involvement,ratio of right ventricle maximum minor axis (RVMMA)to left ventricle maximum minor axis(LVMMA),namely RV:LV,dilation of main pulmonary and/or right pulmonary trunk,and dilation of bronchial arteries in both groups were analyzed comparatively. The correlation factors between CT imaging features and PE clinical severity stratification were explored.The correlation between RV:LV and embolism index of 48 patients was analyzed.Results Pulmonary embolism index(22.0%—85.0%,median 38.0%),ratio of central pulmonary involvement(42.5%),RV:LV (0.90—1.90,median 1.30),dilation of pulmonary artery(14 cases),and dilation of bronchial artery (8 cases)in critical group(21 cases)were higher than those corresponding factors(5%—48%,median 21.5%,31.25%,0.80—1.40,median 1.00,5 eases,and 3 eases)in non-critical group(27 cases) (Z=4.27,X~2=5.40,Z=2.58,X~2=11.45,X~2=4.87,P

Adolescent ; Adult ; Caliciviridae Infections ; epidemiology ; Case-Control Studies ; Child ; Child, Preschool ; China ; epidemiology ; Disease Outbreaks ; statistics & numerical data ; Drinking ; Female ; Gastroenteritis ; epidemiology ; virology ; Genotype ; Humans ; Male ; Norovirus ; Young Adult

OBJECTIVETo search for the best therapy for slow transmission constipation (STC) or mixed constipation (MC) by intensive acupoints thread embedding (IATE).

METHODSA total of 310 patients with constipation were assigned to 5 groups using a stratification control method. The 62 patients of STC in the observation group I were treated by IATE at Dachangshu (BL 25), Tianshu (ST 25), Zhongji (CV 3) and Zusanli (ST 36) acupoints; the 62 of MC in the observation group II by IATE at the same acupoints and local anal operation; both the 62 of STC in the control group I and the 62 of MC in the control group 1I were treated by oral administration of Simo Decoction, while the 62 of MC in the control group III were treated by local anal operation alone. Conditions of defecation were recorded every day in the 6-month follow-up period. Gastrointestinal transit test (GITT) was carried out before and after treatment. One follow-up was conducted at the 1st, 3rd and 6th month.

RESULTSIn the 124 patients of the two observation groups, 52 (41.9%) were cured after treatment, they could normally discharge stool, 5 (4.0%) showed markedly effective with their constipation alleviated, but having occasional bowel slackened sensation. In the control group I and II, none was cured or effectively treated, while in the control group III, the efficacy in 8 patients were judged as marked effective, but none was cured.

CONCLUSIONIATE is a convenient and effective composite therapy. It shows favorable clinical efficacy for STC, and also for MC in case of combined with local anal operation.

Acupuncture Points ; Aged ; Anal Canal ; surgery ; Catgut ; Constipation ; therapy ; Female ; Humans ; Male ; Middle Aged ; Prosthesis Implantation ; methods

Objective To evaluate effects of chronic arsenic exposure and arsenic exposure time on oxidative DNA lesions in humans. Methods A cross-sectional study was conducted in 108 subjects exposed to high concentrations of arsenic in drinking water and 75 control subjects. A cohort study was conducted in 64 subjects exposed to high levels of arsenic in drinking water for 7 or 9 years. Urinary 8-oxo-7,8-dihydredeoxygnanine(8-OHdG) levels were analyzed by the enzyme-linked immunosorbent assay kit(ELISA). Urinary arsenic concentration was detected with hydride generation atomic absorption spectroscopy. Results In the cross-sectional study, the median of urinary arsenic concentration was 484.17 mg/kg Cr for the arsenic-exposed group, and 13.80 mg/kg Cr for the control group, and the difference between the two groups was statistically significant (t=32.57, P<0.01). The median of urinary 8-OHdG levels was 16.60 and 21.88 mg/kg Cr for arsenic-exposed children and adults respectively, much higher than control children(10.50 mg/kg Cr) and adults (9.11 mg/kg Cr), and the difference was statistically significant (t=5.049, 6913, all P<0.01). Urinary 8-OHdG levels were signifieandy lower for children than adults in the exposed group(t=-1.997, P<0.05). In the cohort study, the median of urinary arsenic concentration was 461.3 mg/kg Cr for the 7-year-exposed subjects and 422.90 mg/kg Cr for the 9-year-expesed subjects, and no significant difference was observed(t=-0.250, P 0.05). The median of urinary 8- OHdG levels for 9-year-exposed children and adults were 23.46 and 24.30 mg/kg Cr respectively, significantly increased compared with those of 7-year-exposed(14.29 and 18.38 mg/kg Cr), and the difference had statical signhqcanees (t= -2.949,-3.055, all P<0.01). Conclusions Chronic arsenic exposure can lead to oxidative DNA lesions in humans. The arsenic-induced DNA lesions may aggravate with the exposure time in a certain period.

OBJECTIVETo observe the killing effect of Herceptin and adriamycin sequentially applied on breast cancer cell line in vitro.

METHODSBT-474 human breast cancer cells in exponential growth phase were treated with Herceptin alone, adriamycin alone and their sequential administration (Herceptin before adriamycin and vice versa), respectively. Under optical microscope, the morphological changes of the cells were observed before and after drug administration. The expression rate and mean fluorescence intensity (MFI) of HER-2/neu and cell death rate were detected by flow cytometry.

RESULTSMicroscopically, the cells treated with different protocols all exhibited such changes as darkening and increase of cellular debris with irregular cell morphology. Flow cytometry revealed no significant difference in the expression rate of HER-2/neu in each group before and after treatment, but the MFI of HER-2/neu and death rate of the treated cells were significant different from those of the control group (P<0.05). The cell death rate of Herceptin-pretreated cells was significantly higher than that of adriamycin-pretreated ones (P<0.05).

CONCLUSIONHerceptin pretreatment enhances the killing effect of adriamycin on breast cancer cell line BT-474, which provides experimental evidence for designing clinical sequential biochemotherapy of breast cancer.

Antibiotics, Antineoplastic ; pharmacology ; Antibodies, Monoclonal ; pharmacology ; Antibodies, Monoclonal, Humanized ; Antineoplastic Agents ; pharmacology ; Breast Neoplasms ; metabolism ; pathology ; Cell Death ; drug effects ; Cell Line, Tumor ; Doxorubicin ; pharmacology ; Drug Synergism ; Female ; Flow Cytometry ; Humans ; Receptor, ErbB-2 ; biosynthesis ; Trastuzumab

OBJECTIVETo construct a three-dimensional finite element model of the upper airway and adjacent structure of an obstructive sleep apnea hypopnea syndrome (OSAHS) patient for biomechanical analysis. And to study the influence of glossopharyngeum of an OSAHS patient with three-dimensional finite element model during titrated mandible advancement.

METHODSDICOM format image information of an OSAHS patient's upper airway was obtained by thin-section CT scanning and digital image processing were utilized to construct a three-dimensional finite element model by Mimics 10.0, Imageware 10.0 and Ansys software. The changes and the law of glossopharyngeum were observed by biomechanics and morphology after loading with titrated mandible advancement.

RESULTSA three-dimensional finite element model of the adjacent upper airway structure of OSAHS was established successfully. After loading, the transverse diameter of epiglottis tip of glossopharyngeum increased significantly, although the sagittal diameter decreased correspondingly. The principal stress was mainly distributed in anterior wall of the upper airway. The location of principal stress concentration did not change significantly with the increasing of distance. The stress of glossopharyngeum increased during titrated mandible advancement.

CONCLUSIONA more precise three-dimensional finite model of upper airway and adjacent structure of an OSAHS patient is established and improved efficiency by Mimics, Imageware and Ansys software. The glossopharyngeum of finite element model of OSAHS is analyzed by titrated mandible advancement and can effectively show the relationship between mandible advancement and the glossopharyngeum.

Finite Element Analysis ; Humans ; Mandible ; Sleep Apnea, Obstructive ; Tomography, X-Ray Computed

Objective: To evaluate the long-term prognosis of coronary artery disease (CAD) patients undergoing percutaneous coronary intervention (PCI) by risk stratification with American College of Cardiology (ACC)/American Heart Association (AHA) classification of coronary lesions. Methods: Data used in this study derived from the I-LOVE-IT 2 trial. I-LOVE-IT 2 trial was a prospective, multicenter, randomized, assessor-blinded, noninferiority study. A total of 1 255 patients in I-LOVE-IT 2 trial with only one lesion and underwent biodegradable polymer drug-eluting stent implantation were included and grouped according to ACC/AHA classification of coronary lesions, namely type A/B1 lesion group (n=184), type B2 lesion group (n=457) and type C lesion group (n=614). The primary endpoint was 48-month patient-oriented composite endpoint (PoCE), a composite of all-cause mortality, all myocardial infarction, stroke, and/or any revascularization. The secondary endpoints were target lesion failure (TLF), components of PoCE, major bleeding (bleeding academic research consortium(BARC) type 3-5) and definite/probable stent thrombosis within 48 months. The incidences of endpoint events were compared in the three groups. The multivariable Cox hazard ratio model was used to analyze the independent predictors of PoCE and TLF at 48 months. Results: Incidences of PoCE at 48 months were significantly higher in patients with type C lesion compared with patients with type A/B1 (24.43%(150/614) vs. 14.13%(26/184), P<0.05) or B2 lesion (24.43%(150/614) vs. 15.97%(73/457), P<0.05). The multivariable Cox hazard ratio model showed that the type C lesion were the independent predictors of 48-month PoCE (HR=1.59, 95%CI 1.21-2.08, P<0.001) and TLF (HR=2.31, 95%CI 1.53-3.49, P<0.001). After multivariable adjustment, the HRs of PoCE for patients with type C lesion versus type A/B1 and type B2 were 1.91 (95%CI 1.25-2.92, P=0.003) and 1.64 (95%CI 1.23-2.20, P<0.001), respectively. Meanwhile, the HRs of TLF for patients with type C lesion versus type A/B1 and type B2 were 2.45 (95%CI 1.29-4.64, P=0.006) and 2.55 (95%CI 1.62-4.02, P=0.001), respectively. Conclusions: The ACC/AHA classification of coronary lesions has good discrimination with long-term outcomes for CAD patients undergoing PCI. The type C lesion is associated with a worse prognosis, enough attention should be paid in these patients during routine clinical management.
Cardiovascular Agents ; Coronary Artery Disease ; Drug-Eluting Stents ; Humans ; Percutaneous Coronary Intervention ; Prognosis ; Prospective Studies ; Risk Assessment ; Risk Factors ; Sirolimus ; Treatment Outcome

Sequence analysis of a new norovirus (NV) isolated from Lanzou city of China was performed based on partial sequence of RNA dependent RNA polymerase (RdRp) and complete capsid protein (VP1) gene. The isolated strain CHN02/LZ35666 shared high sequence homology with GII-4 NVs. Nucleotide homologies of RdRp region and encoded capsid protein region were 90.4% -- 98.6% and 89.8% -- 95.7% , respectively, while amino acid homology of capsid protein region was 94.4% -- 97.4%. The analysis of GDD motif in RdRp region indicated this GDD motif of Lanzhou strain differed from those of the GII-4 predominant epidemic strains. Lanzhou strain formed an independent branch in GII-4 cluster in the phylogenetic tree based on nucleotide sequence of RdRp region and amino acid sequence of capsid protein. Sequence alignment revealed a mutation at the fourth key site of the receptor-binding interface in the strains isolated after 2002 compared with those of previous strains suggesting a possible change of binding pattern to HBGAs receptors.
Amino Acid Sequence ; Base Sequence ; Capsid Proteins ; genetics ; China ; Gastroenteritis ; virology ; Humans ; Molecular Sequence Data ; Norovirus ; classification ; genetics ; Phylogeny ; RNA Replicase ; genetics ; Sequence Alignment ; Sequence Analysis, DNA

Objective: To explore the efficacy and safety of haploidentical hematopoietic stem cell transplantation (Haplo-HSCT) for paroxysmal nocturnal hemoglobinuria (PNH). Methods: A total of 17 patients with PNH who received Haplo-HSCT from January 2013 to September 2017 were analyzed retrospectively. Results: Of them, 4 patients had de novo PNH, 13 patients had aplastic anemia-PNH syndrome (AA-PNH). All patients received modified busulfan and Cytoxan (BuCy)-based regimens combined with anti-thymocyte globulin (ATG). Granulocyte colony-stimulating factor-mobilized bone marrow and peripheral blood stem cells were transplanted as graft. Prophylaxis for graft-versus-host disease (GVHD) was ciclosporin A+ mycophenolate mofetil (MMF)+short-term methotrexate (MTX). All patients were engrafted successfully. The median time of neutrophils to 0.5×10⁹/L and platelets to 20×10⁹/L was 12(10-15) days and 14(11-45) days, respectively. All of the 17 patients achieved full donor chimerism at 30 d after Haplo-HSCT. Seven patients developed grade Ⅱ-Ⅳ acute GVHD, and 4 chronic GVHD. Median follow-up time was 27.1 (8.6-60.4) months. Of the 17 patients, 15 survived and 2 died of severe pulmonary infection and transplant associated thrombotic microangiopathy. Three-year overall survival was (77.8±15.2)%. Conclusion Haplo-HSCT may be effective and safe for PNH patients who did not have matched donor.