0.05).Chlorpyrifos increased the activity of CYP1A1 in lungs,CYP2B1 in kidneys and lungs.Cypermethrin increased activity of CYP1A1 in livers,kidneys and lungs,CYP2B1 in livers and lungs,CYP3A in livers.These increases were statistically significant (P

Objective To understand the development situation of the purified protein derivative of tuberculin (PPD) test ,the prevalence of tuberculosis(TB) among the school students in Guangxi and the related influence factors of strong positive result in order to provide the basis for establishing the physical examination system of student TB in Guangxi .Methods The PPD test was conducted in the students participating in the survey firstly ,then the students with strong positive PPD test results and the TB sus-picious symptoms and the suspected TB cases were performed chest X-ray and sputum smear examination .The related factors in the students with strong positive PPD test results and non-strong positive PPD test results were comparatively analyzed .Results To-tally ,53 217 students received the PPD test with the positive rate of 5 .74% (3 055 cases) and the strong positive rate of 1 .46%(775 cases) .The detection rate of active TB was 0 .03% (15 cases) .The χ2 test and the Logistic regression analysis showed that the age group and the regional distribution were the influence factors of strong positive PPD test result (P<0 .05) .Conclusion The preliminary screening by the PPD test and then conducting chest X-ray and sputum smear examination are the effective method for find TB in school and the TB clinic .At the same time the TB screening should be strengthened in the schools in high epidemic areas of TB ,especially the college students .

Biopsy ; Histological Techniques ; instrumentation ; methods ; Humans ; Indicators and Reagents ; Paraffin Embedding ; Ultrasonics

Objective Even after successful surgical repair,patients with coarctation of the aorta (CoA) are at high risk of long-term morbidity and mortality due to cardiovascular events,which is probably related to persistent arterial disfunction during long-terr follow-up after operation,The aim of the study was to explore the alterations of vascular structure and function in children with successfully repaired CoA in the short-and mid-term follow-up.Methods A cohort of 20 children who underwent CoA repair between January 2010 and October 2010 in Guangzhou women and children's Medical Center was studied.There were 14 males and 6 females in CoA group,which comprised 6 patients with isolated CoA,14 patients with CoA associated with intracardia anomalies,whose median age of operation was 4 months (rang from lmonth to 10.0 years).And 20 patients with isolated ventricular septal defect (VSD) were included as VSD group during the same time,with 12 males and 8 females,whose median age of operation was 5 months (rang from 1 month to 12.0 years).Resting blood pressure,flow-mediated dilation (FMD) of the brachial artery,carotid intima-media thickness (IMT) were compared in CoA group and VSD group,including preoperative media data and follow-up of 1 month,6 months and 1 year.In addition,as comparison to the operation group,20 health children with normal echocardiographic findings,whose median age was 5 months (rang from 3 month to 10.0 years),were selected as health group for the 1-year following up.None of them had obesity,hyperlipidemia,diabetes mellitus,metabolic diseases or systemic inflammatory disease.Results As a result of the datas before operation and those I month,6 months and 1 year after operation,all children were normotensive at rest.In the same period,Carotid IMT in CoA group[(0.47 ± 0.10)mm,(0.49 ±0.10) mm,(0.57 ±0.07)mm,(0.61 ± 0.07) mm]was significantly thicker than that in VSD group[(0.41 ±0.11) mm,(0.43 ±0.11)mm,(0.51 ±0.08) mm,(0.55 ±0.08) mm](P＜0.05) and health group[(0.40 ±0.09) mm,(0.42 ±0.11)mm,(0.50 ±0.08) mm,(0.57 ±0.08) mm](P ＜0.05),Brachial artery FMI in children with CoA[(5.4,6 ±1.51)％,(5.71 ±1.88)％,(5.42±1.69)％,(5.27±1.02)％]was significantly lower than that in the VSD control group[(6.69±1.45) ％,(6.66±1.21)％,(6.81 ±1.03)％,(6.43±1.34)％](P＜0.05) and health group[(6.59 ±1.84)％,(6.84±1.41)％,(6.91 ±1.31)％,(6.56±1.62)％](P＜0.05).Significant difference could not be found in neither the IMT nor the FMI between the VSI control group and health group in 4 period respectively,P ＞ 0.05.Conclusion Children after successful coarctation repair have abnomal structural and functional properties of the aorta above the place of coarctation even their blood pressure at rest is normal.These results confirm that the alterations in mechanical properties of carotid arteries as well as the generalized endothelial dysfunction in children with coarctation of the aorta are persistent,which can not be prevented or reversed by surgical repair,and which may partly explain the high incidence of cardiovascular disease observed in their adulthood and reduced life expectancy,furtherly supporting the claim that coartation of the aorta is a systemic vascular disorder which needs long-term follow-up of vascular function.

Objective To observe the effects of five flavonoids include rutin(RU),dihydromyricetin(DMY),hesperetin(HP),daidzein(DA)and hydroxysaffor yellow A(HYSA)on myocardiocyte apoptosis induced by H2O2 and to explore their relationships with Keshan disease and the possible mechanism.Methods Primary cultured cardiocytes of neonatal rats were randomly divided into control group,model group,and flavonoids preincubation group.The cardiocyte apoptosis was examined by fluorescent staining,the rates of apoptosis were detected by flow cytometry,the expression of Bcl-2 family proteins associated with apoptosis were observed:by Western blot.Results Compared with model group[(24.33±6.51)%],RU[(13.95±3.80)%],DA[(11.82±3.50)%],HYSA[(12.33±3.78)%]could decreased the rate of apoptosis(P＜0.05).The five flavonoids could up-regulate Bcl-2 expression,down-regulate Bax expression,and increase the Bcl-2/Bax ratio[RU(0.989±0.094),DMY(0.931±0.280),HP(0.980±0.095),DA(1.049±0.092),HYSA(1.031±0.039),vs model(0.490±0.046),the difference had statistical significances(P＜0.05)],but the Bcl-xl did not significantly changed(P＞0.05).Conclusions RU,DMY,HP,DA and HYSA have antiapoptotic effects on cardiomyocyte via regulating Bcl-2 and Bax,which gives us a hint in prevention and treatment of Keshan disease.

Objective To investigate the resistance-mechanism of the carbapenems-resistant Klebsiella pneumoniae isolated from clinical.Methods The clinical isolates of carbapenems-resistant Klebsiella pneumoniae from top three comprehensive hospitals of Nanjing area were examined by 40 beta-lactamase,porin-coding genes and linkage of KPC-ISKpn6 using PCR method,the PCR positive results were picked out for sequencing and sequencing BLAST search for comparison analysis.Results Twenty-four strains of carbapenems-resistant Klebsiella pneumoniae were detected,the positive rate of A beta-lactamase TEM-1 and SHV was 100％ (24/24),KPC-2 and LAP-2 was 95.8％ (23/24),45.8％ (11/24) respectively,and C beta-lactamase DHA was 4.2％ (1/24).Meanwhile,the positive detection rates of KPC-ISKpn6 linkage was 95.8％ (23/24),and the mutation rate of porin-coding genes ompK35 and ompK36 were up to 95.8％ (23/24) and 100％ (24/24).Conclusion High incidence of beta-lactamase TEM-1,SHV,KPC-2 and LAP-2 was found in the group of Klebsiella pneumoniae isolates,and carbapenems-resistant of which was primarily due to the high carrying rate of KPC-2 and the high mutation rate of porin-coding genes ompK35 and ompK36.The Insertion sequence ISKpn6 may be involved in the KPC-2 gene mediated-expression.

Objective To observe the effect of circadian rhythm on hypnotic median effective dose( ED50) of ketamine. Methods Sixty mice were randomly divided into 4 groups which had 15 mice in each group. They were intraperitoneally injected with ketamine at different times of 2 Am,8 Am,2 Pm and 8 Pm, respectively. Righting reflex was recorded and the value of ED50 was measured with sequential experimental method. Results The hypnotic ED50 of ketamine at 2 Am was(54.57?0.82) mg/kg, with 95% confidence limit of ED50 38.06-78.22 mg/kg;ED50 was(49. 27?0. 12) mg/kg at 8 Am, with 95% confidence limit of ED50 40. 21-60. 37 mg/kg;ED50 at 2 Pm was (42.28?0.21) mg/kg, with 95% confidence limit 37.35 - 47 83 mg/kg;and ED50 at 8 Pm was(57.42?0.14) mg/kg, with 95% confidence limit 37.51-73 72 mg/kg,respectively. The ED50 were significant different at 2 Pm and 8 Pm. However, there were no significant difference in ED50 value among other groups. Conclusion The hypnotic effect of ketamine has circadian rhythm - dependent.

OBJECTIVETo observe the effect of Salvia miltiorrhiza Injection (SMI) and Shengmai Injection (SI) on liver function and fibrosis related indexes in patients with chronic hepatitis B.

METHODSSeventy-nine chronic hepatitis B patients were randomly divided into the SMI group (n=47) and the SI group (n=32), they were treated with SMI and SI respectively on the basis of conventional treatment. The therapeutic course was 35 days for both groups. The changes of main symptoms and physical signs were observed, and indexes of liver function and fibrosis including serum hyaluronidase, laminin, III type precollagen (PC-III) and IV type collagen (IV-C) were investigated before and after treatment.

RESULTSSymptoms, physical signs and liver functions were improved obviously in both SMI and SI groups, SI showed better effect than SMI (P < 0.05). The four liver fibrosis indexes declined significantly in the SMI group after treatment (P < 0.05), but no obvious change of those was found in the SI group (P > 0.05), showing significant difference between the two groups (P < 0.05). Conclusion SMI is effective in improving liver function and inhibiting liver fibrosis, and SI has even better effect in improving liver function than SMI, though it shows no anti-liver fibrosis effect.

Adult ; Collagen Type IV ; blood ; Drug Combinations ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; administration & dosage ; therapeutic use ; Female ; Hepatitis B, Chronic ; blood ; drug therapy ; Humans ; Hyaluronoglucosaminidase ; blood ; Injections, Intravenous ; Laminin ; blood ; Liver Cirrhosis ; prevention & control ; Male ; Middle Aged ; Phytotherapy ; Salvia miltiorrhiza ; Treatment Outcome

This study was aimed to explore the level of NK cell activity in the patients with secondary hemophagocytic syndrome (HPS) and its significance for early diagnosis of this disease. 16 suspected HPS patients and 25 healthy subjects were enrolled in this study. The activity of NK cells in peripheral blood was detected by a released LDH assay. The activity level of NK cells in peripheral blood from patients who were finally diagnosed as HPS was compared with healthy subjects. The results showed that 8 out of 16 suspected HPS patients were finally diagnosed as secondary HPS. The activity of NK cells in peripheral blood of these 8 patients was obviously lower than that in healthy subjects with statistical significance (p<0.001), and showed abnormal in the early stage of this disease. It is concluded that the detection of NK cell activity may play an important role in earlier diagnosis of secondary hemophagocytic syndrome.
Case-Control Studies ; Early Diagnosis ; Humans ; Killer Cells, Natural ; immunology ; Lymphocyte Activation ; immunology ; Lymphohistiocytosis, Hemophagocytic ; diagnosis ; immunology

This study was purposed to investigate the effects and mechanism of transforming growth factor beta (TGF-beta) on acute graft-versus-host disease (aGVHD) after allogeneic bone marrow transplantation (allo-BMT). The recipients were male BABL/c mice, while the donors were male C57BL/6 mice. The murine model of aGVHD had been established by allo-BMT with donor derived T cells. Experiment was divided into four groups: control group, radiation control group, transplantation control group and TGF-beta treated group. Mice in TGF-beta treated group were daily subcutaneously injected TGF-beta1 (1 microg/kg) in two days before transplantation until seven days after it. The results showed that the survival time of mice in TGF-beta treated group was significantly longer than that in transplantation control group, and the aGVHD pathological changes in TGF-beta treated group were milder than that in transplantation control group. At seven days after transplantation, the level of IL-2 in TGF-beta treated group was significantly higher than that in control group, but significantly lower than that in transplantation control group. The level of IL-10 in TGF-beta treated group was significantly higher than that in transplantation control group, but the level of IL-10 in transplantation control group was significantly lower than that in other groups. It is concluded that TGF-beta may alleviate or suppress lethal aGVHD, and elevate the survival rate after allo-BMT in murine model. Accommodating of the Th1 and Th2 cytokine levels is the possible mechanism of TGF-beta preventing lethal aGVHD.
Animals ; Bone Marrow Transplantation ; methods ; Graft vs Host Disease ; prevention & control ; Interleukin-10 ; blood ; Interleukin-2 ; blood ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Transforming Growth Factor beta ; therapeutic use ; Transplantation, Homologous