Abstract：
:Repetitive exposure of macrophages to microbial antigen is known to tolerize them to further stimulation and to inhibit proinflammatory cytokine release. Using transgenic (Tg) mice that incorporate the entire HIV-1 genome we have previously shown that toll like receptor (TLR)-2, -4, and -9 ligands induced tolerance as assessed by decreased proinflammatory cytokine secretion and nuclear factor-kappa beta activation. Yet, despite cytokine modulation, HIV-1 p24 production was enhanced in tolerized cells in vitro and in vivo. Since mice are not natural hosts for HIV infection, in the following report we examined whether TLR2 and TLR4 ligands induced tolerance in human monocytic cell lines stably expressing the HIV-long terminal repeat (LTR) luciferase construct (THP-LTR-Luc) as well as in primary macrophages that had been infected with HIV(BAL)in vitro. In THP-LTR-luc, TLR2 and TLR4 tolerization suppressed tumor necrosis factor (TNF)-alpha release and HIV-LTR transactivation. In HIV(BAL) infected macrophages, repeated LPS exposure inhibited HIV replication as assessed by decreased genetic expression and protein production of HIV-1 p24, although TNF-alpha release was not inhibited. These observations may have important clinical implications in understanding the role of macrophages as HIV reservoirs at anatomical sites where there is repeated exposure to microbial antigens.
journal_name
Microbes Infectjournal_title
Microbes and infectionauthors
Equils O,Salehi KK,Cornateanu R,Lu D,Singh S,Whittaker K,Baldwin GCdoi
10.1016/j.micinf.2006.06.002subject
Has Abstractpub_date
2006-08-01 00:00:00pages
2469-76issue
9-10eissn
1286-4579issn
1769-714Xpii
S1286-4579(06)00231-0journal_volume
8pub_type
杂志文章abstract：:The manipulation hypothesis states a parasite may alter host behaviour for its own benefit, often by enhancing its transmission rate through the food chain. This paper reviews studies on the potential impact of one parasite, Toxoplasma gondii, on host behaviour, both on rodents, where altered responses may be proposed...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
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更新日期：2001-10-01 00:00:00
abstract：:Streptococcus pneumoniae is a major pathogen causing potentially life-threatening community-acquired diseases in both the developed and developing world. Since 1967, there has been a dramatic increase in the incidence of penicillin-resistant and multiply antibiotic-resistant pneumococci worldwide. Prevention of access...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(00)01345-9
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journal_title：Microbes and infection
pub_type： 杂志文章
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更新日期：2012-11-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.micinf.2008.05.001
更新日期：2008-07-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2004.12.001
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pub_type： 杂志文章
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更新日期：2006-04-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
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更新日期：2002-12-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/s1286-4579(00)00390-7
更新日期：2000-07-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2005.09.016
更新日期：2006-03-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
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更新日期：2002-11-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(00)01361-7
更新日期：2001-02-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2013.08.001
更新日期：2013-11-01 00:00:00
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journal_title：Microbes and infection
pub_type： 信件
doi：10.1016/s1286-4579(02)00049-7
更新日期：2003-01-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2005.10.031
更新日期：2006-04-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2004.09.017
更新日期：2005-02-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/s1286-4579(99)80077-x
更新日期：1999-08-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2007.07.009
更新日期：2007-10-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(01)01453-8
更新日期：2001-09-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
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更新日期：2017-01-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2010.12.003
更新日期：2011-04-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2009.03.001
更新日期：2009-04-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
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更新日期：1999-11-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2008.09.013
更新日期：2009-01-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
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更新日期：2010-07-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
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更新日期：2007-01-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2007.02.004
更新日期：2007-05-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2005.01.012
更新日期：2005-04-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
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更新日期：2000-05-01 00:00:00
abstract：:This short review will highlight three areas of current research on the role of complement in bacterial infection. These are i) the use of mice with targeted disruption of complement genes to study infectious disease models; ii) studies on the interactions between bacterial virulence factors and complement regulatory ...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(99)80063-x
更新日期：1999-07-01 00:00:00
abstract：:We analyzed the distribution and expression of cadherin and beta-catenin during Trypanosoma cruzi-cardiomyocyte interaction. Confocal microscopy revealed cadherin associated with beta-catenin at the cell-cell contacts. After 24h of infection, the spatial distribution and expression of both adherens junction (AJ) prote...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2008.07.044
更新日期：2008-10-01 00:00:00
