Gas Chromatography-Mass Spectrometry ; methods ; Humans ; Malathion ; metabolism ; urine

Aged ; Coal Mining ; Humans ; Male ; Pneumoconiosis ; rehabilitation ; Positive-Pressure Respiration ; methods

Objective Implanting surgical meshes to support breast in periareoler mammaplasty shows an excellent prospect.But shrinking of the mesh and the adhesion formation affected the postoperative shape and palpation of the breast.The aim of this study was to compare biocompatible properties of four different polypropylene meshes (Prolene(R) ; Vypro Ⅱ(R) ; Premilene Mesh (R) and Premilene Mesh LP(R)) and to discuss the inclusion criteria of meshes in this technique.Methods The study was carried out in pigs.Four different polypropylene meshes were implanted subcutaneously in belly.90 days after implantation the mesh samples were explanted,and complications,foreign-body reaction,collagen fiber and elastic fiber formation were observed,as well as ultrastructures for the biocompatible properties.Results The biocompatible properties of each mesh were different.The foreign-body reactions determined the biocompatible properties,and affected the postoperative shape greatly.Conclusions Premilene Mesh LP o as a newer low-weight polypropylene mesh,has superior properties to the others.

Bronchopulmonary Sequestration ; diagnosis ; pathology ; Female ; Humans ; Infant, Newborn ; Lung ; blood supply ; pathology ; Magnetic Resonance Imaging ; Pregnancy ; Ultrasonography, Prenatal

Objective To investigate the proliferation and identification of dendritic cells(DC)de- rived from peripheral blood of patients with bladder cancer in vitro.Methods The mononuclear cells were prepared from peripheral blood of patients with bladder cancer by Ficoll-Hypaque centrifugation method,and were induced by the recombinant cytokines hGM-CSF(50 ng/ml),hlL-4(10 ng/ml)and hTNF-?(50 ng/ ml)for 2 weeks.The growth and morphology of DC were observed through the phase contrast or electron mi- croscope,and their pheuotypes were determined by flow cytometry.The capacity of DC to activate T cell-de- pendent anti-tumor immune responses was tested by MTT method.Results The DC cultured in vitro turned into suspensive growth from adhesive situation on the 6th day,then the number of DC increased con- tinuously and the cells showed the irregular morphologic appearance of DC with veiled edges on the 8th day. Flow cytometry showed that the mature DC expressed high levels of specific markers such as CD_(1a),CD_(83), CD_(86)and HLA-DR.T cells activated by DC showed strong cytotoxicity to bladder cancer cell line BIU87 with a killing rate of(48.8?3.7)%,while the killing rate of T cells which were not activated by DC was(25.7?1.5)%;the difference of the rate between them was significant(P＜0.01). Conclusions The DC can be cultured from peripheral blood of patients with bladder cancer by induction of rhGM-CSF,rhIL-4 and hT- NF-?in vitro.This may lay an experimental foundation for further research on DC vaccine.

OBJECTIVETo study the prevalence and associated factors of suicide attempt in middle school students.

METHODSFive middle schools in Chengdu were randomly sampled in the study. A total of 1393 students between the ages of 11 and 18 finished a self-administered questionnaire, Beck Depression Inventory (BDI), Adolescent Self-Rating Life Events Check List (ASLEC) and Egma Minnen av Bardodosnauppforstran (EMBU). Everyone who had suicide attempts was interviewed. Data were analysed by SPSS 8.0 (statistical package for the social science) program on computer.

RESULTSThirty-six (2.6%) of the 1 393 students has the history of attempted suicide and the ratio of boys and girls was 1:2. Among the suicide attempters, 33.3% had recurrent events. The most common reason of suicide attempts in middle school stage was family conflicts (34.4%) with most common event as taking overdose tranquilizers or poisoning (50.0%). Risk factors of suicide attempt seemed to include hallucination, cigarette smoking, being bullied by peers, wanting to change sex, parents' remarriage, being female, father's refusal, being neglected in childhood and experiencing more events in the previous year. Protecting factor was found to have been family warmness.

CONCLUSIONSuicide attempts were not uncommonly seen in middle school students. Clinicians and teaching staff should identify the risk factors and carry out intervention as early as possible.

Adolescent ; Child ; China ; epidemiology ; Cross-Sectional Studies ; Female ; Humans ; Male ; Risk Factors ; Sampling Studies ; Sex Factors ; Students ; psychology ; statistics & numerical data ; Suicide, Attempted ; prevention & control ; psychology ; statistics & numerical data ; Surveys and Questionnaires ; Urban Population

Objective To investigate the treatment of atypical hemolytic uremic syndrome (aHUS) in their acute phase and relate the prognostic factors.Methods Twenty-eight patients with aHUS treated in Department of Nephrology,Beijing Children's Hospital Affiliated to Capital Medical University from January 2011 to March 2015 were collected,the outcomes of the treatment were summarized.Results All the patients were given plasma exchange (PE)treatment,21 patients with hemodialysis (HD) treatment;13 patients with H factor (FH) antibody were further treated with corticosteroid therapy,and 1 patient was treated with the combination of mycophenolate mofetil.Evaluation of patients' indices were conducted at month 3.Out of the 28 patients,there were 13 patients with complete remission;of the 14 patients showed improvement,6 patients were complicated with hypertension and 4 patients with renal dysfunction.One patient,with ongoing hemodialysis,did not show restoration of renal function.There was no death in children.Statistical analysis showed that the acute phase serum creatinine levels were (430.0 ± 124.7) μmol/L and (265.6 ± 90.8)μmol/L for the group with remaining kidney injury and the group with complete remission,respectively,the difference was statistically significant(P ＜0.01).The levels of FH for the 2 groups were (206.5 ± 134.9) mg/L and(415.4-±214.1) mg/L,and the difference was statistically significant (P ＜ 0.01) as well.Statistical analysis showed that differences were no statistically significant between the 2 groups of patients on their age,platelets,complement C3,complement C4,hemoglobin and lactate dehydrogenase (all P ＞ 0.05).For the group with positive antibody,its average serum creatinine was (346.4 ± 112.5) μmol/L.For the group with negative antibody,its average serum creatinine was (297.0 ± 89.3) μmol/L.The FH for group with positive antibody and group with negative antibody were (307.4 ±187.3) mg/L and (379.8 ± 203.5) mg/L,respectively.The differences were not statistically significant (all P ＞0.05).Conclusions PE is an effective treatment for aHUS at acute phase,and corticosteroid and immunosuppressive therapy are effective for patients with positive anti-FH antibody.For patients with severe kidney injury at acute phase,the possibility of long-term kidney damage is high.Low concentration of serum FH indicates a poor prognosis.

Objective To analyze the clinical features of pediatric sepsis with initial symptoms of autoimmune hemolytic anemia(AIHA) and acute renal failure.Methods Ten cases of pediatric sepsis with initial symptoms of AIHA and acute renal failure were selected from January 2000 to January 2014 in Department of Nephrology,Beijing Children's Hospital Affiliated to Capital University of Medical Science.The clinical data were retrospectively analyzed and long-time follow-up was taken.Results There were 8 boys and 2 girls of the 10 cases.The ages ranged from 8 months to 12.8 years.There were 8 children less than 6 years old having a prevalence of 80％.There were sudden dark urine and progressive anemia in all the cases,jaundice in 9 cases,abdominal pain and vomiting in 6 cases.Urine volume decreased in 7 cases and anuria in 3 cases.Four cases showed disorder of consciousness and 2 developed shock.Respiratory failure and disseminated intravascular coagulation happened in 1 case respectively.In terms of pathogens,2 cases were infected by mycoplasma and 1 case was infected by hemolytic streptococcus.The rest of the pathogen was unknown.The Coomb's test was 3 +-4 + positive.Serum urea nitrogen and creatinine gradually increased.High level total serum bilirubin and unconjugated bilirubin were shown in 8 cases and low level complement in 7 cases.Bone marrow films showed hyperplasia in all the cases.Renal biopsy was taken in 3 cases and no microthrombus was found.Corticosteroid was used in all 10 cases for 6 months.Blood purification was taken in 8 cases.Respiratory support was used in 4 cases.Nine recovered and 1 case gave up treatment.Further follow-up was taken for 2.2-8.1 years.Eight cases had normal urine and blood routine test and renal function.Relapse happened in 1 girl 1 year later.One case lost follow-up.Conclusions Once sudden hemoglobinuria,anemia and progressively decreased urine output occur in sepsis cases,the clinicians should consider AIHA and acute renal failure.Based on active infection control,the early use of steroids and blood purification treatment can improve the prognosis.

Objective To have a knowledge of the mutagenicity of contaminates in drinking water in a certain city. Methods Mutagenic activity of organic extracts of source water chloridized water in water plant and tap water from the city were detected with single cell gel-electrophoresis mouse primary hepatocytes in culture were used and Ames test. Results For Ames test the organic extract in 3 liters chloridized water in water plant and tap water samples produced positive result and that in 6 liters source water sample still gave a negative result. For single cell gel-electrophoresis test the organic extract in 0.1 liter chloridized water in water plant tap water and 0.5 liter source water produced positive result. Conclusion The sensitivity of single cell gel-electrophoresis with primary hepatocytes in detection of genotoxicity of cloridized water and source water is much higher than Ames test.

Objective To investigate the effect of arsenic exposure on learning and memory ability of rats.Methods Fourty- eight weaned SD rats were randomly divided into four groups,12 in each.The control group drank tap water,the other three groups treated with sodium arsenite at doses of 2.72 mg/L,13.6 mg/L and 68 mg/L for 12 weeks.Morris water maze was used to test the spatial learning and memory ability of rats.Arsenic level in the blood and brain was assessed after Morris water maze test.Results Arsenic contents in the blood of arsenic exposed rats were significantly higher than that in control rats(P