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Starks TJ, Skeen SJ, Scott Jones S, Gurung S, Millar BM, Ferraris C, Ventuneac A, Parsons JT, Sparks MA. Effectiveness of a Combined Motivational Interviewing and Cognitive Behavioral Intervention to Reduce Substance Use and Improve HIV-Related Immune Functioning. AIDS Behav 2022; 26:1138-1152. [PMID: 34537912 DOI: 10.1007/s10461-021-03467-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2021] [Indexed: 12/01/2022]
Abstract
This study evaluated the effectiveness of Project PLUS, a 6-session Motivational Interviewing and Cognitive Behavioral intervention to reduce substance use and improve antiretroviral therapy (ART) adherence among PLWH. In a quasi-experimental design, 84 participants from a network of three comprehensive care clinics in New York City received the intervention immediately post-baseline (the Immediate condition) and 90 were assigned to a Waitlist control. Viral load and CD4 data were extracted from electronic medical records (EMR) for a No-Intervention comparison cohort (n = 120). Latent growth curve analyses did not show a consistent pattern of significant between-group differences post-intervention or across time in ART adherence or substance use severity between Immediate and Waitlist participants. Additionally, Immediate intervention participants did not differ significantly from the Waitlist or No-Treatment groups on viral load or CD4 post-intervention or across time. The potential to detect intervention effects may have been limited by the use of a quasi-experimental design, the high quality of standard care at these clinics, or inadequate intervention dose.Trial Registration: ClinicalTrials.gov (NIH U.S. National Library of Medicine) Identifier: NCT02390908; https://clinicaltrials.gov/ct2/show/NCT02390908.
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Affiliation(s)
- Tyrel J Starks
- Department of Psychology, Hunter College of the City University of New York (CUNY), 695 Park Ave. 611 Hunter North, New York, NY, 10065, USA.
- Doctoral Program in Health Psychology and Clinical Science, Graduate Center of CUNY, New York, NY, USA.
| | - Simone J Skeen
- PRIDE Health Research Consortium, Hunter College of CUNY, New York, NY, USA
| | - S Scott Jones
- Department of Psychology, Hunter College of the City University of New York (CUNY), 695 Park Ave. 611 Hunter North, New York, NY, 10065, USA
| | - Sitaji Gurung
- Department of Psychology, Hunter College of the City University of New York (CUNY), 695 Park Ave. 611 Hunter North, New York, NY, 10065, USA
| | - Brett M Millar
- Department of Psychology, Hunter College of the City University of New York (CUNY), 695 Park Ave. 611 Hunter North, New York, NY, 10065, USA
| | - Christopher Ferraris
- HIV Center for Clinical and Behavioral Studies at the New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - Ana Ventuneac
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Martha A Sparks
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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2
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Bailey KL, Samuelson DR, Wyatt TA. Alcohol use disorder: A pre-existing condition for COVID-19? Alcohol 2021; 90:11-17. [PMID: 33080339 PMCID: PMC7568767 DOI: 10.1016/j.alcohol.2020.10.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023]
Abstract
Alcohol misuse is long established as a contributor to the pathophysiology of the lung. The intersection of multi-organ responses to alcohol-mediated tissue injury likely contributes to the modulation of lung in response to injury. Indeed, the negative impact of alcohol on susceptibility to infection and on lung barrier function is now well documented. Thus, the alcohol lung represents a very likely comorbidity for the negative consequences of both COVID-19 susceptibility and severity. In this review, we present the known alcohol misuse ramifications on the lung in the context of the current coronavirus pandemic.
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Affiliation(s)
- Kristina L Bailey
- Research Service, Department of Veterans Affairs Omaha-Western Iowa Health Care System, Omaha, NE, 68105, United States; Pulmonary, Critical Care and Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, United States.
| | - Derrick R Samuelson
- Pulmonary, Critical Care and Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, United States.
| | - Todd A Wyatt
- Research Service, Department of Veterans Affairs Omaha-Western Iowa Health Care System, Omaha, NE, 68105, United States; Pulmonary, Critical Care and Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, United States; Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, NE, 68198-5910, United States.
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3
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Abstract
Chronic consumption of a large amount of alcohol disrupts the communication between nervous, endocrine, and immune system and causes hormonal disturbances that lead to profound and serious consequences at physiologic and behavioral levels. These alcohol-induced hormonal dysregulations affect the entire body and can result in various disorders such as stress abnormalities, reproductive deficits, body growth defect, thyroid problems, immune dysfunction, cancers, bone disease, and psychological and behavioral disorders. This review summarizes the findings from human and animal studies that provide consistent evidence on the various effects of alcohol abuse on the endocrine system.
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Affiliation(s)
- Nadia Rachdaoui
- Nadia Rachdaoui, Ph.D., Rutgers Endocrine Research Program. Department of Animal Sciences Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ 08901,
| | - Dipak K. Sarkar
- Dipak K. Sarkar, Ph.D., D. Phil., Rutgers Endocrine Research Program. Department of Animal Sciences, Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ 08901,
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Kaphalia L, Calhoun WJ. Alcoholic lung injury: metabolic, biochemical and immunological aspects. Toxicol Lett 2013; 222:171-9. [PMID: 23892124 DOI: 10.1016/j.toxlet.2013.07.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 07/12/2013] [Accepted: 07/16/2013] [Indexed: 02/07/2023]
Abstract
Chronic alcohol abuse is a systemic disorder and a risk factor for acute respiratory distress syndrome (ARDS) and chronic obstructive pulmonary disease (COPD). A significant amount of ingested alcohol reaches airway passages in the lungs and can be metabolized via oxidative and non-oxidative pathways. About 90% of the ingested alcohol is metabolized via hepatic alcohol dehydrogenase (ADH)-catalyzed oxidative pathway. Alcohol can also be metabolized by cytochrome P450 2E1 (CYP2E1), particularly during chronic alcohol abuse. Both the oxidative pathways, however, are associated with oxidative stress due to the formation of acetaldehyde and/or reactive oxygen species (ROS). Alcohol ingestion is also known to cause endoplasmic reticulum (ER) stress, which can be mediated by oxidative and/or non-oxidative metabolites of ethanol. An acute as well as chronic alcohol ingestions impair protective antioxidants, oxidize reduced glutathione (GSH, cellular antioxidant against ROS and oxidative stress), and suppress innate and adaptive immunity in the lungs. Oxidative stress and suppressed immunity in the lungs of chronic alcohol abusers collectively are considered to be major risk factors for infection and development of pneumonia, and such diseases as ARDS and COPD. Prior human and experimental studies attempted to identify common mechanisms by which alcohol abuse directly causes toxicity to alveolar epithelium and respiratory tract, particularly lungs. In this review, the metabolic basis of lung injury, oxidative and ER stress and immunosuppression in experimental models and alcoholic patients, as well as potential immunomodulatory therapeutic strategies for improving host defenses against alcohol-induced pulmonary infections are discussed.
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Affiliation(s)
- Lata Kaphalia
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Texas Medical Branch, Galveston, TX, United States
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Böhm I, Speck U, Schild H. Cell-dependent influence on the phagocytosis induced by non-ionic contrast medium injection. Br J Radiol 2008; 81:199-203. [PMID: 18180265 DOI: 10.1259/bjr/13906058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Iodinated contrast media (CM) can inhibit phagocytosis. To better understand the importance of this effect upon the elementary defence mechanism, the aim of the study was to compare the in vivo effect of non-ionic CM on the engulfing ability of peripheral blood phagocytic cells from patients undergoing CM-enhanced CT. Neutrophil granulocytes and monocytes from patients' peripheral blood obtained before and 30 min after CM injection were incubated with fluorescent-labelled Escherichia coli bacteria. Both the percentage of cells that engulfed bacteria and the phagocytic activity per cell has been determined by flow cytometry. We found that phagocytosis was greater in neutrophils than in monocytes. CM decreased the percentage of monocytes phagocyting bacteria, both at 4 degrees C (20.3%+/-3.3% versus 16.1%+/-2.0%; p<0.03) and at 37 degrees C (51.6%+/-4.1% versus 47.5%+/-2.6%; p>0.05), and increased the percentage of neutrophils at 4 degrees C (11.8%+/-2.1% versus 14.3%+/-2.2%; p<0.002) and at 37 degrees C (83.1%+/-3.6% versus 85.1%+/-3.2%; p>0.05). The phagocytic activity decreased significantly at 37 degrees C in monocytes (p<0.02), and was not affected in neutrophils. CM injection has different effects on both the percentage of phagocytosing cells and the phagocytic activity in monocytes and neutrophils. The inhibitory effect on monocyte phagocytosis seems to be compensated by neutrophils.
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Affiliation(s)
- I Böhm
- Department of Radiology, Center for Molecular Imaging Research MBMB, University of Bonn, Germany.
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Kumar R, Perez-Casanova AE, Tirado G, Noel RJ, Torres C, Rodriguez I, Martinez M, Staprans S, Kraiselburd E, Yamamura Y, Higley JD, Kumar A. Increased viral replication in simian immunodeficiency virus/simian-HIV-infected macaques with self-administering model of chronic alcohol consumption. J Acquir Immune Defic Syndr 2005; 39:386-90. [PMID: 16010157 DOI: 10.1097/01.qai.0000164517.01293.84] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Alcohol abuse constitutes a major cohort among HIV-infected individuals. The precise effect of alcohol addiction on HIV pathogenesis remains inconclusive, however. This study was designed to determine the effect of alcohol dependence on virus replication and CD4 profiles in simian immunodeficiency virus/simian-HIV-infected rhesus macaques. A group of 3 male Indian rhesus macaques was adapted to a self-drinking model of alcohol consumption, whereas another group of 3 macaques was provided a Nutrasweet solution. After 7 weeks of alcohol consumption, the alcohol-dependent animals along with controls were intravenously inoculated with a mixture of SHIV(KU), SHIV(89.6)P, and SIV/17E-Fr. These animals were followed for a period of 24 weeks for complete blood cell counts, CD4 cell profiles, and viral loads in the blood and cerebral compartments. The alcohol and control groups showed comparable peak viral loads in the blood. The plasma viral load in the alcohol group was 31- to 85-fold higher than that in the control group at weeks 18 through 24 after infection, however. The pattern of cerebrospinal fluid viral replication was also comparable during the acute phase; however, the virus continued to replicate in the brain of alcohol-dependent animals, whereas it became undetectable in the controls. The extent of CD4 cell loss in the alcohol group was significantly higher than that in the control animals at week 1 after infection.
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Affiliation(s)
- Rakesh Kumar
- Laboratory of Viral Immunology, Department of Microbiology, Ponce School of Medicine, San Juan, PR
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Parsons JT, Kutnick AH, Halkitis PN, Punzalan JC, Carbonari JP. Sexual risk behaviors and substance use among alcohol abusing HIV-positive men who have sex with men. J Psychoactive Drugs 2005; 37:27-36. [PMID: 15916249 PMCID: PMC2040072 DOI: 10.1080/02791072.2005.10399746] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
An ethnically diverse sample (79.0% men of color) of HIV seropositive (HIV+) men who have sex with men (MSM) with alcohol use disorders from the New York City metropolitan area was recruited from a variety of settings frequented by such men. Data were collected using quantitative assessments and calendar based techniques at the baseline assessment of a longitudinal study assessing the relationship between alcohol and substance use and sexual risk behaviors as well as alcohol use and HIV disease progression. Data were selected on a sample of 253 HIV+ MSM (mean age = 38.55, SD = 6.73). Of these, the majority of participants (80.2%, n=203) reported engaging in sexual behaviors with casual partners. In terms of sexual behaviors that put partners at greatest risk for HIV transmission, unprotected anal insertive intercourse was most likely to occur with unknown status casual partners (46.8%, n=95) than with either HIV negative casual partners (19.2%, n=39) or with HIV+ casual partners (40.8%, n=83). Further, bivariate analyses indicated significant relationships between the use of several substances and sexual behaviors that put partners at greatest risk for HIV transmission, as well as a significant positive relationship between drinks per drinking day and viral load.
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Affiliation(s)
- Jeffrey T Parsons
- Hunter College of the City University of New York, Department of Psychoology, New York 10021, USA.
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Abstract
Melioidosis, caused by the gram-negative saprophyte Burkholderia pseudomallei, is a disease of public health importance in southeast Asia and northern Australia that is associated with high case-fatality rates in animals and humans. It has the potential for epidemic spread to areas where it is not endemic, and sporadic case reports elsewhere in the world suggest that as-yet-unrecognized foci of infection may exist. Environmental determinants of this infection, apart from a close association with rainfall, are yet to be elucidated. The sequencing of the genome of a strain of B. pseudomallei has recently been completed and will help in the further identification of virulence factors. The presence of specific risk factors for infection, such as diabetes, suggests that functional neutrophil defects are important in the pathogenesis of melioidosis; other studies have defined virulence factors (including a type III secretion system) that allow evasion of killing mechanisms by phagocytes. There is a possible role for cell-mediated immunity, but repeated environmental exposure does not elicit protective humoral or cellular immunity. A vaccine is under development, but economic constraints may make vaccination an unrealistic option for many regions of endemicity. Disease manifestations are protean, and no inexpensive, practical, and accurate rapid diagnostic tests are commercially available; diagnosis relies on culture of the organism. Despite the introduction of ceftazidime- and carbapenem-based intravenous treatments, melioidosis is still associated with a significant mortality attributable to severe sepsis and its complications. A long course of oral eradication therapy is required to prevent relapse. Studies exploring the role of preventative measures, earlier clinical identification, and better management of severe sepsis are required to reduce the burden of this disease.
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Affiliation(s)
- Allen C Cheng
- Menzies School of Health Research, Charles Darwin University, Darwin, Australia
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Watzl B, Bub A, Pretzer G, Roser S, Barth SW, Rechkemmer G. Daily moderate amounts of red wine or alcohol have no effect on the immune system of healthy men. Eur J Clin Nutr 2003; 58:40-5. [PMID: 14679365 DOI: 10.1038/sj.ejcn.1601742] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To investigate whether the daily intake of red wine (RW) at a dose which inversely correlates with cardiovascular disease (CVD) risk modulates immune functions in healthy men. DESIGN Randomized single-blind trial with four intervention periods. SETTING The Institute of Nutritional Physiology, Federal Research Centre for Nutrition, Karlsruhe, Germany. SUBJECTS A total of 24 healthy males with moderate alcohol consumption patterns were recruited and all completed the study. INTERVENTION Participants consumed 500 ml of RW (12% ethanol (ETOH)) or 500 ml of a 12% ETOH dilution per day for a period of 2 weeks. To control the potential effects of RW polyphenols, accordingly 500 ml/day of dealcoholized red wine (DRW) and of red grape juice (RGJ) were given. The following immune parameters were measured before beverage consumption and at 1 and 2 weeks following beverage consumption: phagocytic activity of neutrophils and monocytes, production of tumor necrosis factor-alpha (TNFalpha), interleukin-2 and -4, transforming growth factor-beta, TNFalpha mRNA, lymphocyte proliferation, lytic activity of natural killer cells, and percentage of apoptotic lymphocytes. RESULTS Consumption of a moderate volume of alcohol with RW and with a 12% ETOH dilution had no effect on immune functions in healthy males. Consumption of polyphenol-rich beverages (DRW and RGJ) did not affect immunity-related parameters. CONCLUSIONS Daily moderate consumption of alcohol and of RW for 2 weeks at doses which inversely correlate with CVD risk has no adverse effects on human immune cell functions. Polyphenol-rich beverages such as RGJ and DRW further do not suppress immune responses in healthy men.
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Affiliation(s)
- B Watzl
- Institute of Nutritional Physiology, Federal Research Centre for Nutrition, Karlsruhe, Germany.
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Pfefferbaum A, Rosenbloom M, Sullivan EV. Alcoholism and AIDS: Magnetic Resonance Imaging Approaches for Detecting Interactive Neuropathology. Alcohol Clin Exp Res 2002. [DOI: 10.1111/j.1530-0277.2002.tb02638.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stoltz DA, Nelson S, Kolls JK, Zhang P, Bohm RP, Murphey-Corb M, Bagby GJ. Effects of In Vitro Ethanol on Tumor Necrosis Factor-alpha Production by Blood Obtained From Simian Immunodeficiency Virus-Infected Rhesus Macaques. Alcohol Clin Exp Res 2002. [DOI: 10.1111/j.1530-0277.2002.tb02571.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Effects of In Vitro Ethanol on Tumor Necrosis Factor-?? Production by Blood Obtained From Simian Immunodeficiency Virus???Infected Rhesus Macaques. Alcohol Clin Exp Res 2002. [DOI: 10.1097/00000374-200204000-00014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Impaired health caused by alcohol abuse has been known throughout recorded history. Over the past century, alcohol abuse has been clearly linked to host susceptibility to infectious disease, particularly bacterial pneumonia. Recently, both acute and chronic alcohol intake have been shown to result in specific defects in innate and adaptive immunity; these could, in principle, be subjected to specific modulation to overcome the immunosuppressive effects of the most commonly abused substance in the Western world.
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Affiliation(s)
- Steve Nelson
- LSU Health Sciences Center Alcohol Research Center, and Section of Pulmonary Critical Care, LSU Health Sciences Center, 533 Bolivar Street, New Orleans, Louisiana 70112, USA
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Abstract
Respiratory defenses against infection involve a diverse and complex system. Mechanical barriers limit exposure of the respiratory tract to potential pathogenic organisms, whereas the mucociliary apparatus and cough reflexes work to expel any microbes that may bypass the initial defenses. When microorganisms have gained entry to the lower respiratory tract, the alveolar macrophage and recruited phagocytes may eliminate the culprits before active infection can be established. Only after the failure of the innate immune defenses is a specific immune response mounted. Examination of clinical defects in host defense allows one to understand the importance of the multitude of components of the lung's immune defense system.
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Affiliation(s)
- D A Welsh
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
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Dong Q, Kelkar S, Xiao Y, Joshi-Barve S, McClain CJ, Barve SS. Ethanol enhances TNF-alpha-inducible NFkappaB activation and HIV-1-LTR transcription in CD4+ Jurkat T lymphocytes. THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE 2000; 136:333-43. [PMID: 11079460 DOI: 10.1067/mlc.2000.110104] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
During the latent phase of human immunodeficiency virus type 1 (HIV-1) infection, CD4+ T cells carrying replication-competent proviral HIV-1 DNA play an important role in persistence of the virus. Several cofactors can induce and or amplify HIV-1 replication and negatively affect disease progression and pathogenesis. Ethanol consumption is an important risk factor for HIV-1 infection, and it has been implicated in increased HIV-1 replication and progression of infection. Because tumor necrosis factor-alpha (TNF-alpha) is an important modulator of HIV-1 replication, in the present study we examined the possible effects of ethanol on TNF-alpha-inducible signaling associated with HIV-1 replication in human CD4+ T cells (Jurkat E6-1). We demonstrate that clinically relevant ethanol concentrations significantly potentiate TNF-alpha-inducible NFkappaB. Although ethanol effectively collaborated with TNF-alpha, by itself it did not have a direct effect on NFkappaB activation. The ethanol-dependent potentiation of TNF-alpha-inducible NFkappaB nuclear translocation was observed to involve the enhanced degradation of IkappaBalpha. Additionally, the ethanol-mediated potentiation of TNF-alpha-inducible NFkappaB activation was abrogated by the known antioxidant pyrrolidinedithiocarbamate, suggesting an important mechanistic role for reactive oxygen species in this process. In correspondence with its effect on NFkappaB, ethanol was also observed to significantly enhance HIV-1 long terminal repeat-dependent transcription induced by TNF-alpha. Overall, the data provide a molecular basis for the possible role of ethanol as a cofactor that can adversely affect HIV-1 infection and pathogenesis.
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Affiliation(s)
- Q Dong
- Graduate Center for Toxicology, and Department of Internal Medicine, University of Kentucky Medical Center, Lexington 40536-0084, USA
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Stoltz DA, Nelson S, Kolls JK, Zhang P, Bohm RP, Murphey-Corb M, Bagby GJ. In vitro ethanol suppresses alveolar macrophage TNF-alpha during simian immunodeficiency virus infection. Am J Respir Crit Care Med 2000; 161:135-40. [PMID: 10619810 DOI: 10.1164/ajrccm.161.1.9905016] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pulmonary infections are a significant cause of morbidity and mortality in patients with alcohol abuse and human immunodeficiency virus (HIV) infection, two immunocompromising conditions that frequently coexist. This study examined the separate and combined effects of in vivo lentiviral infection and in vitro alcohol exposure on alveolar macrophage (AM) production of tumor necrosis factor- alpha (TNF-alpha), a proinflammatory cytokine that is critical to normal pulmonary host defense. AMs, recovered by bronchoalveolar lavage (BAL) from uninfected and simian immunodeficiency virus (SIV)-infected rhesus macaques, at the asymptomatic and terminal stages of infection, were cultured in ethanol 2 h prior to stimulation with lipopolysaccharide (LPS). Median TNF-alpha concentrations were measured 15 h later. Spontaneous TNF-alpha production was similar in all groups examined. LPS increased TNF-alpha protein production similarly in SIV(-) (2, 381 +/- 359 pg/ml) and SIV(+) animals at the terminal stage of infection (2,019 +/- 507 pg/ml). In contrast, cells from SIV(+) asymptomatic animals had a depressed response (763 +/- 304 pg/ml). Ethanol (100 mM) suppressed the LPS-induced AM TNF-alpha response by approximately 50% in both SIV(-) and (+) animals. Ethanol-induced suppression of the TNF-alpha response occurred at a post-transcriptional level. These data suggest that ethanol-induced suppression of the pulmonary TNF-alpha response may further increase the susceptibility to and severity of secondary infectious complications in HIV-infected hosts.
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Affiliation(s)
- D A Stoltz
- Department of Medicine, Section of Pulmonary/Critical Care, Alcohol Research Center, New Orleans, Louisiana, USA
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