PMID- 12874302 OWN - NLM STAT- MEDLINE DCOM- 20030826 LR - 20210526 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 71 IP - 8 DP - 2003 Aug TI - Coordinate cytokine gene expression in vivo following induction of tuberculous pleurisy in guinea pigs. PG - 4271-7 AB - Tuberculous pleurisy is a severe inflammatory response induced by Mycobacterium tuberculosis organisms that have escaped from lung granulomata into the pleural space during pulmonary infection. We have used the guinea pig model of tuberculous pleurisy to examine several aspects of the immune response to this antigen-specific inflammatory event. Pleurisy was induced by injection of heat-killed M. tuberculosis H37Rv directly into the pleural space of guinea pigs previously vaccinated with M. bovis BCG. Four animals were euthanized each day over a period of 9 days. Fluid in the pleural cavity was analyzed for transforming growth factor beta 1 (TGF-beta 1) and total interferon (IFN) protein levels. In addition, RNA was obtained from pleural cells and examined for TGF-beta 1, tumor necrosis factor alpha (TNF-alpha), IFN-gamma, and interleukin-8 (IL-8) expression by real-time PCR. Finally, pleural cells were examined for the ability to proliferate in response to concanavalin A and purified protein derivative (PPD) in vitro. In the pleural fluid, TGF-beta 1 protein concentrations increased over the course of the inflammatory response while IFN protein levels were not significantly altered. Expression of TGF-beta 1 mRNA peaked on days 3 and 4, and IFN-gamma mRNA expression peaked on day 3 and then returned to background levels. TNF-alpha mRNA expression was highest on days 2 to 4, and IL-8 mRNA levels remained elevated between days 2 and 5, peaking on day 3 before returning to background levels. PPD-induced proliferative responses were evident by day 3 and remained present throughout the study. Analysis of cytokine expression during tuberculous pleurisy may lead to a better understanding of the self-healing nature of this manifestation of tuberculosis. FAU - Allen, Shannon Sedberry AU - Allen SS AD - Department of Medical Microbiology & Immunology, Texas A&M University System Health Science Center, College Station, Texas 77843, USA. sedberry@medicine.tamu.edu FAU - McMurray, David N AU - McMurray DN LA - eng GR - R01 AI015495/AI/NIAID NIH HHS/United States GR - R01 AI 15495/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Cytokines) RN - 0 (Interleukin-8) RN - 0 (RNA, Messenger) RN - 0 (Transforming Growth Factor beta) RN - 0 (Transforming Growth Factor beta1) RN - 0 (Tuberculin) RN - 0 (Tumor Necrosis Factor-alpha) RN - 11028-71-0 (Concanavalin A) RN - 82115-62-6 (Interferon-gamma) RN - 9008-11-1 (Interferons) SB - IM MH - Animals MH - Base Sequence MH - Concanavalin A/pharmacology MH - Cytokines/*genetics/metabolism MH - Gene Expression MH - Guinea Pigs MH - In Vitro Techniques MH - Interferon-gamma/genetics MH - Interferons/metabolism MH - Interleukin-8/genetics MH - Lymphocyte Activation/drug effects MH - RNA, Messenger/genetics/metabolism MH - Time Factors MH - Transforming Growth Factor beta/genetics/metabolism MH - Transforming Growth Factor beta1 MH - Tuberculin/pharmacology MH - Tuberculosis, Pleural/etiology/*genetics/*immunology MH - Tumor Necrosis Factor-alpha/genetics PMC - PMC166002 EDAT- 2003/07/23 05:00 MHDA- 2003/08/27 05:00 PMCR- 2003/08/01 CRDT- 2003/07/23 05:00 PHST- 2003/07/23 05:00 [pubmed] PHST- 2003/08/27 05:00 [medline] PHST- 2003/07/23 05:00 [entrez] PHST- 2003/08/01 00:00 [pmc-release] AID - 0226 [pii] AID - 10.1128/IAI.71.8.4271-4277.2003 [doi] PST - ppublish SO - Infect Immun. 2003 Aug;71(8):4271-7. doi: 10.1128/IAI.71.8.4271-4277.2003.