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KMID : 0923620180180030022
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Immune Network
2018 Volume.18 No. 3 p.22 ~ p.22
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Epidemiologic Evidence of and Potential Mechanisms by Which Second-Hand Smoke Causes Predisposition to Latent and Active Tuberculosis
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Bai Xiyuan
Aerts Shanae L.
Verma Deepshikha
Ordway Diane J.
Chan Edward D.
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Abstract
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Many studies have linked cigarette smoke (CS) exposure and tuberculosis (TB) infection and disease although much fewer have studied second-hand smoke (SHS) exposure. Our goal is to review the epidemiologic link between SHS and TB as well as to summarize the effects SHS and direct CS on various immune cells relevant for TB. PubMed searches were performed using the key words “tuberculosis” with “cigarette,” “tobacco,” or “second-hand smoke.” The bibliography of relevant papers were examined for additional relevant publications. Relatively few studies associate SHS exposure with TB infection and active disease. Both SHS and direct CS can alter various components of host immunity resulting in increased vulnerability to TB. While the epidemiologic link of these 2 health maladies is robust, more definitive, mechanistic studies are required to prove that SHS and direct CS actually cause increased susceptibility to TB.
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KEYWORD
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Tobacco smoke pollution, Cigarette smoking, Mycobacterium tuberculosis, Latent tuberculous infection
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