Asthma ; metabolism ; therapy ; Breath Tests ; Child ; Child, Preschool ; Female ; Humans ; Male ; Nitric Oxide ; metabolism

This study aimed to explore Semaphrin4D (Sema4D) expression and clinical significance in non-small cell lung cancer (NSCLC), and to define the roles and mechanisms of Sema4D in regulating the malignant behaviors of A549 cells by small interfering RNA (siRNA). Firstly, immunohistochemistry revealed that Sema4D was more frequently expressed in NSCLC than in lung benign lesion (P<0.05) and its overexprssion was associated with low differentiation (P<0.05), poor pTNM staging (P<0.05) and occurrence of lymph node (LN) metastasis (P<0.05). Endogenous Sema4D expression was suppressed by Sema4D siRNA in A549 cells overexpressing Sema4D. Protein levels of Sema4D, total Akt and p-Akt were examined by Western blotting. Cell proliferation, migration and invasion abilities were measured by MTT assay and Transwell assay respectively. Results showed that Sema4D siRNA significantly suppressed phosphorylation of AKT in A549 cells, but it did not alter total AKT expression. In addition, efficient down-regulation of SemaD significantly inhibit cell proliferation (P<0.05), migration (P<0.05) and invasion (P<0.05) in A549 cells. These findings suggest that Sema4D might serve as a reliable tool for early prediction of NSCLC poor prognosis. Sema4D could play an important role in promoting tumor proliferation, migration and metastasis in the NSCLC, by influencing the Akt protein phosphorylation. Inhibition of Sema4D may be a useful approach for the treatment of NSCLC.

In order to prove the feasibility of preparation of the drug-incorporated stent by immersing stent wires in the monoclonal antibody (mAb) solution, fluorescence stain and image analysis were used to evaluate the L-PLA-coated stent. Absorption was measured using a radioisotope technique after preparing the mAb-incorporated stent, and the absorption curve was determined from the absorption data. In an in vitro perfusion circuit, the antibody was eluted from the stent matrices, and the related influence factors were evaluated based on the release data.
Absorption ; Alloys ; chemistry ; Antibodies, Monoclonal ; chemistry ; immunology ; Drug-Eluting Stents ; Graft Occlusion, Vascular ; immunology ; prevention & control ; Humans ; Lactic Acid ; chemistry ; Platelet Aggregation Inhibitors ; chemistry ; immunology ; Platelet Glycoprotein GPIIb-IIIa Complex ; immunology ; Polymers ; analysis ; chemistry ; Time Factors

Naringenin (1) was transformed to three metabolites (2-4) by Mucor sp. Based on LCMS(n)-IT-TOF and NMR spectroscopic data, 2-4 were identified as naringenin-7-O-sulphate, naringenin-4'-O-sulphate, and naringenin-5-O-sulphate, respectively. These results might provide hints to the mammalian/human metabolism of naringenin.
Biotransformation ; Drugs, Chinese Herbal ; chemistry ; metabolism ; Flavanones ; chemistry ; metabolism ; Magnetic Resonance Spectroscopy ; Molecular Structure ; Mucor ; metabolism ; Sulfates ; metabolism

OBJECTIVETo investigate the carrier ratio and the genotype of thalassemia in the rural people of reproductive age in Nanning, and to analyze the characteristics of hematologic parameter in thalassemia carriers.

METHODS2044 cases of productive age youths were detected with hemoglobin autoanalyse-Variant (HPLC) and Cell Dyn 1700 automatic hemocyte analysator. Among them,430 cases (75 couples randomly selected in thalassemia screening, 140 couples who were told that one or both of them were positive for thalassemia phenotype through hemocyte analysis) carried out thalassemia gene detection in synchronism.

RESULTS163 cases were detected beta-thalassemia and the thus beta-thalassemia carrier ratio was 7.97%. 13 cases were detected HbH disease, and 2 cases Hb Manitoba, 2 cases HbJ, and 1 case HbQ. As for genotypes,-alpha (3.7)/alpha,-alpha(CS)/alphaalpha and -alpha(WS)/alphaalpha were common ones with in alpha-thalassemia-2, --(SEA)/alphaalpha the most common one in alpha-thalassemia-1, and 41-42 were the most common ones in beta-thalassemia heterozygotes. The detection ratio of alpha,beta combination thalassemia was also relatively high. Mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) were low in all cases of HbH disease and beta-thalassemia, also low in 86 cases of alpha-thalassemia-1 with the exception of normal MCH in 1 case, yet normal in 17 cases out of 66 cases of alpha-thalassemia-2. HbF raised in 32 cases out of 69 cases of beta-thalassemia heterozygote, no case showed raised HbF without the raise of HbA2. Hematologic characteristic of alpha, beta combination thalassemia was mainly caused by beta-thalassemia.

CONCLUSIONCarrier ratio of thalassemia in rural productive age youths in Nanning was high while alpha-thalassemia-2 with the genotype -alpha(WS)/alphaalpha and -alpha(CS)/ alphaalpha were common. To those with low MCV and MCH in high-risk region, thalassemia should be suspected.

Adult ; Carrier State ; China ; epidemiology ; Genotype ; Humans ; Mass Screening ; Rural Population ; alpha-Thalassemia ; diagnosis ; epidemiology ; genetics ; beta-Thalassemia ; diagnosis ; epidemiology ; genetics

This study aimed to explore Semaphrin4D (Sema4D) expression and clinical significance in non-small cell lung cancer (NSCLC), and to define the roles and mechanisms of Sema4D in regulating the malignant behaviors of A549 cells by small interfering RNA (siRNA). Firstly, immunohistochemistry revealed that Sema4D was more frequently expressed in NSCLC than in lung benign lesion (P<0.05) and its overexpression was associated with low differentiation (P<0.05), poor pTNM staging (P<0.05) and occurrence of lymph node (LN) metastasis (P<0.05). Endogenous Sema4D expression was suppressed by Sema4D siRNA in A549 cells overexpressing Sema4D. Protein levels of Sema4D, total Akt and p-Akt were examined by Western blotting. Cell proliferation, migration and invasion abilities were measured by MTT assay and Transwell assay respectively. Results showed that Sema4D siRNA significantly suppressed phosphorylation of AKT in A549 cells, but it did not alter total AKT expression. In addition, efficient down-regulation of SemaD significantly inhibit cell proliferation (P<0.05), migration (P<0.05) and invasion (P<0.05) in A549 cells. These findings suggest that Sema4D might serve as a reliable tool for early prediction of NSCLC poor prognosis. Sema4D could play an important role in promoting tumor proliferation, migration and metastasis in the NSCLC, by influencing the Akt protein phosphorylation. Inhibition of Sema4D may be a useful approach for the treatment of NSCLC.
Aged ; Antigens, CD ; biosynthesis ; Carcinoma, Non-Small-Cell Lung ; metabolism ; mortality ; pathology ; Cell Line, Tumor ; Cell Movement ; Cell Proliferation ; Disease-Free Survival ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Lung Neoplasms ; metabolism ; mortality ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Invasiveness ; Phosphorylation ; Proto-Oncogene Proteins c-akt ; metabolism ; Semaphorins ; biosynthesis ; Survival Rate

Objective To investigate the dynamic change and associated risk factors of HIV sero-conversion rate in Beijing.Methods 809 sero-negative men who have sex with men (MSM) were recruited in the cohort from August to December in 2009.HIV sero-antibody,medicinal examination and behavior questionnaire interview were carried out every six months.Results 962 MSM with overall baseline prevalence of HIV infection as 6.34％ (61/962) together with 809 seronegative MSM,were enrolled in the cohort.Of the 809 sero-negative participants,95.1％ (769/809),85.5％ ( 692/809 ) and 71.0％ ( 574/809 ) of them were retained in the 6-month,12-month and 18- month follow-up visits,with 19,29 and 17 of them became HIV sero-conversion at 6-month,12-month,and 18-month follow-up visits and the HIV incidence rates appeared to be 5.47,12.37 and 6.86 per 100 person-years respectively.The HIV incidence was 7.59 per 100 person-years in the 18 months follow-up visit.Factors including:younger than 25-years old (HR =2.32,95％CI:1.39-3.87),having more than 8 MSM partners (HR=2.50,95％CI:1.49-4.20),less than RMB 2000 Yuan every month income (HR=1.76,95％CI:1.06-2.95 ),having more than 4 homosexual partners in the last six months (HR=3.50,95％ CI:2.11 -5.81 ),showing phimosis and redundant prepuce (HR=2.47,95％ CI:1.50-4.07 ) as well as positive syphilis test (HR=2.62,95％CI:1.53-4.49) etc.,were significantly associated with HIV incidence.Conclusion High HIV incidence was shown among MSM in Beijing and had spread fast in this population,calling for more favorable prevention measures to be taken.

A total of 24 biologically pure entophytic fungal strains were isolated from stems, leaves, and seed coats of Xylocarpus plants by repeated purification, and identified with Internal Transcribed Spacer (ITS) rDNA molecular method, which belonging to 14 genera, 11 families, 9 orders and 3 classes. There were differences in genus and species levels among three plant materials from different habitats and species, and it was found that the strains of Phomopsis and Colletotrichum existed in all three plant materials. In vitro assay of antitumor activity by MTT method revealed that the EtOAc extracts of 15 strains exhibited potent antitumor activity. These results suggest that it is of value for further investigation on the above fungal strains.
Antineoplastic Agents ; isolation & purification ; pharmacology ; Biodiversity ; Cell Line, Tumor ; Endophytes ; chemistry ; classification ; genetics ; isolation & purification ; Fungi ; chemistry ; classification ; genetics ; isolation & purification ; HCT116 Cells ; Humans ; Meliaceae ; microbiology ; Phylogeny

BACKGROUNDUnregulated commercial blood/plasma collection among farmers occurred between 1992 and 1995 in central China and caused the second major epidemic of human immunodeficiency virus type 1 (HIV-1) infection in China. It is important to characterize HIV-1-infected former blood donors and to study characteristics associated with disease progression for future clinical intervention and vaccine development.

METHODSA cross-sectional study was performed on HIV-1-infected former blood donors (FBDs) and age-matched HIV-seronegative local residents. Demographic, epidemiologic, clinical and key laboratory data were collected from all study participants. Both unadjusted and adjusted multivariate linear regressions were employed to analyze the association of the decrease of CD4(+) T-cell counts with other characteristics.

RESULTSTwo hundred and ninety-four HIV-1-infected FBDs and 59 age-matched HIV-seronegative local residents were enrolled in this study. The unregulated blood/plasma collection occurred more than a decade (10.8 - 12.8 years) ago, which caused the rapid spread of HIV-1 infection and the high prevalence of co-infection with hepatitis C virus (HCV, 89.5%); hepatitis B virus (HBV) co-infection was observed in only 11 HIV(+)participants (3.7%). Deterioration in both clinical manifestation and laboratory parameters and increase of viral loads were observed in parallel with the decrease of CD4(+) T-cell counts. The decrease of total lymphocyte counts (P < 0.001) and hemoglobin levels (P < 0.001) and the appearance of dermatosis (P = 0.03) were observed in parallel with the decrease of CD4(+) T-cell counts whereas viral loads (P < 0.001) and CD8(+) T-cell counts (P = 0.01) were inversely associated with CD4(+) T-cell counts.

CONCLUSIONSCo-infection with HCV but not HBV is highly prevalent among HIV-1-infected FBDs. CD4(+) T-cell counts is a reliable indicator for disease progression among FBDs. Total lymphocyte counts, hemoglobin level and appearance of dermatosis were positively associated with CD8(+) T-cell counts and viral loads were inversely associated with the decreased CD4(+) T-cell counts.

Adult ; Aged ; Blood Donors ; China ; epidemiology ; Cross-Sectional Studies ; Female ; HIV Infections ; complications ; epidemiology ; immunology ; HIV-1 ; Hepatitis C ; complications ; Humans ; Male ; Middle Aged

Antibodies, Monoclonal, Humanized/adverse effects* ; Humans ; Immune Checkpoint Inhibitors/adverse effects* ; Myocarditis/drug therapy*