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排序方式: 共有67条查询结果,搜索用时 171 毫秒
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Sophie Limou Cédric Coulonges Mario Foglio Simon Heath Gora Diop Sigrid Leclerc Thomas Hirtzig Jean-Louis Spadoni Amu Therwath Gérard Lambeau Ivo Gut Jean-François Zagury 《Biomedicine & Pharmacotherapy》2008,62(1):31-40
Members of the secreted phospholipase A2 (PLA2) protein family can inhibit HIV-1 virus replication in vitro. To evaluate the impact of PLA2 gene polymorphisms on AIDS disease development, we studied 12 family members using SNPlextrade mark technology that permitted simultaneous typing of 70 tagging Single Nucleotide Polymorphisms (tagSNPs). The study utilized HIV-1 seropositive donors with slow progressor (n=168) or rapid progressor (n=54) status, plus 355 control subjects. All donors were Caucasian (total 577 individuals). Genetic associations yielded mainly 0.01
相似文献
3.
Aicha Abbas Alexandre Vasilescu Hervé Do Houria Hendel Mustapha Maachi Fran?ois-Xavier Goutalier Emmanuel G Regulier Jay Rappaport Fumihiko Matsuda Amu Therwath Pierre Aucouturier Jean-Fran?ois Zagury 《Biomedicine & Pharmacotherapy》2005,59(1-2):38-46
We have compared the levels of immunoglobulins G (IgG) and G4 (IgG4) in extreme seropositive patients from the GRIV cohort consisting of 168 patients with slow progression (SP) and 60 with rapid progression (RP) as well as in 173 healthy controls. IgG levels were significantly higher in SP patients than in RP patients (P = 0.008), both higher than in seronegative individuals. IgG4 levels were significantly lower in SP patients than in RP patients (P = 0.001), both lower than in seronegative individuals. We tried to correlate these levels with biological parameters (CD4(+) and CD8(+) cells, total lymphocytes, white blood cell counts, percentage of CD4(+) cells, and viral load) as well as with genetic markers from Th1/Th2 cytokines (IL2, IL4, IL6, IL10, IL13, and IFNgamma). IgG levels were correlated with the percentage of CD4(+) cells in SP while IgG4 levels were correlated with CD8(+) cell count in SP and with percentage of CD4(+) cells in RP patients. Among the parameters measured in SP patients at the time of inclusion in the study, the best predictor of progression towards AIDS was the viral load, the best predictor for stability was CD4(+) cell count, but overall, the best predictor for SP evolution (stability vs. progression) appeared to be the percentage of CD4(+) cells. Interestingly, correlations between the levels of IgG or IgG4 and the cytokine gene polymorphisms were found, notably in the IL10 gene. 相似文献
4.
Arvinder Bhui-Kaur Amu Therwath Laurent Henry Jean Chiesa Arun Kurkure Klaus Scherrer Jean Paul Bureau 《Journal of cancer research and clinical oncology》1998,124(2):117-126
Monoclonal antibodies were raised against the prosomal proteins p27K, p29K and the prosome-like protein p21K (PLP) from normal
breast glandular cells and from benign and malignant tumors. They were used to clarify the involvement of prosomes in tumorigenesis
of human breast cells. Immunostaining showed the distribution of prosomes in the cytoplasm and nuclei of cells from European
normal women (EN) and Parsi (P) and non-Parsi (NP) benign (B) and malignant (M) tissues. The flow-cytometry studies showed
an increased mean percentage of labeled cells, particularly with anti-p27K prosomal protein mAb, in malignant tissue from
NP compared to EN. The p21K data indicated an increase in the number of cells labeled by flow-cytometry studies in all groups
compared to EN, while p29K-expressing cells were more abundand in NPN, PB, PM and NPM. Intergroup comparison showed that the
mean percentage of cells labeled with anti-p27K and anti-p29K was significantly higher in PB than in NPB, as seen by flow
cytometry, whereas there was a higher production or accumulation of the p21K (PLP) prosomal protein in NPM than in PM, as
seen by immunostaining. By comparison with EN, there were also significantly more normal cells containing the three antigens
in the apparently normal tissue in the neighborhood of the tumor in NPM, and more cells containing p21K in PM patients than
in EN. As prosomes are involved in the cell differentiation and in the cell cycle control, the changes observed in breast
tissues may be related to oncogenic processes. Furthermore, the modified subunit pattern of prosomes in cancer and, possibly,
pre-cancer tissue may be of interest for diagnosis purposes.
Received: 12 June 1997 / Accepted: 21 October 1997 相似文献
5.
This retrospective observational study was designed to study the impact of a dedicated antenatal clinic service on obstetric and neonatal outcomes among teenage mothers in the maternity unit of a district general hospital in the UK. Outcomes were measured to investigate improvement in obstetric and neonatal outcomes before, and 12 months after the establishment of dedicated clinic for teenage pregnant women. Significant improvement in the birth weight was observed p = 0.01. A modest decrease in neonatal admission to special care unit by 6% was observed. Rate of spontaneous vaginal deliveries increased p = 0.0009. There was significant uptake of contraception and continuation of breast-feeding in this group of young women (p < 0.0001). 相似文献
6.
7.
Exhaustive genotyping of the CEM15 (APOBEC3G) gene and absence of association with AIDS progression in a French cohort 总被引:4,自引:0,他引:4
Do H Vasilescu A Diop G Hirtzig T Heath SC Coulonges C Rappaport J Therwath A Lathrop M Matsuda F Zagury JF 《The Journal of infectious diseases》2005,191(2):159-163
CEM15 (or APOBEC3G) has recently been identified as an inhibitor of human immunodeficiency virus type 1 (HIV-1) replication in vitro. To evaluate the impact of its genetic variations on the progression of acquired immunodeficiency syndrome (AIDS), we have performed an extensive genetic analysis of CEM15. We have sequenced CEM15 in a cohort of 327 HIV-1-seropositive patients with extreme disease progression phenotypes--either slow progression or rapid progression--and in 446 healthy control subjects, all of white descent. We have identified 29 polymorphisms with allele frequencies >1%, 14 of which were newly characterized. There were no significant associations between the polymorphisms or haplotypes of CEM15 and a disease progression phenotype in our cohort. 相似文献
8.
B cells are in analogy with T cells capable of expressing functional IL-2 receptors. IL-2R alpha-chain (CD25) positive T cells have been studied in detail but not much is known about CD25 positive B cells. The aim of this study was to examine the phenotypic properties of the CD25 expressing B cells collected from different lymphoid organs in mice. Samples were stained for various cell surface markers and analysed using flow cytometry. We found that approximately 49% of B cells in bone marrow, 16% in peritoneal cavity, 2% in spleen and 1% in lymph nodes express CD25. In contrast, CD25 expressing B cells were not found in the blood or in Peyer's patches. Phenotypic characterization showed that CD25+ B cells in spleen, lymph nodes and peritoneal cavity have higher expression of AA4.1, CD5, CD69, CD80, CD86, CD122, CD132, IgA, IgG and IgM on their surface in comparison with CD25- B cells. In contrast, expression of IgD and IA-IE was lower on CD25+ B cells in spleen and lymph nodes. In bone marrow, the expression of CD5, CD80, CD86, CD122, CD132, IgA, IgD and IgM was lower, while the expression of AA4.1, IgG and IA-IE was increased on CD25+ B cells compared with CD25- B cells. In conclusion, our results indicate that B cells expressing CD25 are phenotypically distinctly different from those that are CD25 negative. Our findings suggest that CD25+ B cells are more prone to efficient antigen presentation and display a more mature phenotype. 相似文献
9.
Gabriella Aviello Sylvie Amu Sean P. Saunders Padraic G. Fallon 《Phytotherapy research : PTR》2014,28(2):300-304
Inflammatory bowel disease is an urgent public health problem with a high incidence in developed countries. Alterations of lifestyle or dietary interventions may attenuate the disease progression and increase the efficacy of current therapies. Here we tested the effect of chronic supplementation with a mineral extract from red marine algae – rich in calcium (34%), magnesium, phosphorus, selenium and other trace minerals – in a clinically relevant model of spontaneous enterocolitis, interleukin (IL)‐10‐/‐ mice. The mineral extract was administered in the drinking water of Il10‐/‐ mice on C57BL/6 J and BALB/c strain backgrounds for 25 weeks commencing from 3 to 4 weeks of age. The mineral extract ameliorated the spontaneous development of colitis and severity of disease in Il10‐/‐ mice on a C57BL/6 J background. Mineral extract‐treated Il10‐/‐ C57BL/6 J strain mice had significantly reduced mortality, circulating levels of serum Amyloid A and reduced colonic tissue damage. In contrast, comparable treatment of Il10‐/‐ mice on a BALB/c background with the mineral extract did not alter the course of colitis. These data demonstrate that chronic supplementation with a natural mineral extract selectively ameliorates spontaneous mild–moderate colitis in Il10‐/‐ mice on a C57BL/6 J, but does not attenuate more moderate–severe colitis in BALB/c strain animals. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
10.
Regulatory B (Breg) cells are important regulators of immune responses and in recent years our understanding of their phenotypical and functional characteristics has improved considerably. Initially all suppressive capabilities of Breg cells were attributed to the actions of the anti-inflammatory cytokine interleukin (IL)-10 secreted by Breg cells. Recent studies however, highlight additional and novel mechanisms that influence both the expansion of Breg cells and their capacity to suppress immunity. Here we provide an overview of the complexity of Breg cell populations and address the newly discovered IL-10 independent mechanisms of Breg cell expansion and immune-suppression. 相似文献