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Legaz I, Navarro-Noguera E, Collados-Ros A, Bolarín JM, Muro M. Biomarkers of Innate Immunity and Immunological Susceptibility to Viral Infection in Patients with Alcoholic Cirrhosis. Biomedicines 2024; 12:336. [PMID: 38397937 PMCID: PMC10887413 DOI: 10.3390/biomedicines12020336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND The harmful effect of alcohol on the immune system may be due to both a direct action of the alcohol or its metabolites on immune cells as an indirect action modifying the different mechanisms of intercellular interaction. The interplay between stimulatory (aKIR) and inhibitory (iKIR) natural killer (NK) cell receptors and their corresponding human leukocyte antigen (HLA) ligands influences the outcome of virus infection. The aim was to analyze the influence of the KIR/HLA pair genetic profile in male alcoholic cirrhosis (AC) patients with and without viral infections to find susceptibility biomarkers that can help establish the risks and prevent viral infections. METHODS A total of 281 male AC patients were analyzed. The sociodemographic characteristics, viral hepatitis C (HCV), hepatitis B (HBV), and cytomegalovirus (CMV) infections were analyzed. Genomic DNA was extracted, and genetic the KIR/HLA profiles were investigated. A total of 6 KIR genes and their corresponding ligands (HLA-C) were analyzed. Patients were grouped into two groups: with and without associated viral infection. RESULTS A statistically significant increase in the combination of KIR2DL2+/C1C1 was observed in male AC patients with viral infection compared to those without viral infection (45.9% vs. 24.5%, p = 0.021). The analysis of KIR2DL3+/C1+ showed a high frequency comparing healthy controls and male AC patients without virus infection (85% vs. 76.4%; p = 0.026). The analysis of KIR2DL3+/C2C2 frequency showed a statistically significant increase comparing male AC patients without viral infection and healthy controls (23.6% vs. 15%; p = 0.026). CONCLUSIONS The genetic KIR2DL2+/C2C2 profiles may play a significant role in determining the vulnerability of male AC patients to viral infections, providing valuable insights for future research and potential therapeutic interventions.
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Affiliation(s)
- Isabel Legaz
- Department of Legal and Forensic Medicine, Biomedical Research Institute of Murcia (IMIB), Regional Campus of International Excellence “Campus Mare Nostrum”, Faculty of Medicine, University of Murcia (UMU), 30100 Murcia, Spain
| | - Elena Navarro-Noguera
- Digestive Medicine Service, Hospital Clinico Universitario Virgen de la Arrixaca (HCUVA), 30120 Murcia, Spain
| | - Aurelia Collados-Ros
- Department of Legal and Forensic Medicine, Biomedical Research Institute of Murcia (IMIB), Regional Campus of International Excellence “Campus Mare Nostrum”, Faculty of Medicine, University of Murcia (UMU), 30100 Murcia, Spain
| | - Jose Miguel Bolarín
- Department of Legal and Forensic Medicine, Biomedical Research Institute of Murcia (IMIB), Regional Campus of International Excellence “Campus Mare Nostrum”, Faculty of Medicine, University of Murcia (UMU), 30100 Murcia, Spain
| | - Manuel Muro
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”—IMIB, 30120 Murcia, Spain
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Tomulic Brusich K, Škrtić A, Sobočan N, Acan I, Čipak Gašparović A. Role of NRF2 and reactive aldehydes in acute cellular rejection in liver transplant recipients. Pathol Res Pract 2023; 250:154826. [PMID: 37742477 DOI: 10.1016/j.prp.2023.154826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/16/2023] [Indexed: 09/26/2023]
Abstract
OBJECTIVE To evaluate the level of oxidative stress and antioxidative response in the transplanted liver and its role in acute cellular rejection (ACR). Particular attention was paid to ACR diagnosis in patients with hepatitis C (HCV), as histopathological features of ACR and viral disease recurrence overlap. METHODS This retrospective study included 40 liver transplant patients who underwent liver transplantation with two consecutive liver biopsies performed during one hospitalization period: 1.) initial biopsy of the donor liver (before implantation) and 2.) indication biopsy (after suspected ACR). Based on the etiology, patients were divided into two groups: 22 patients with alcoholic liver cirrhosis (EtOH group) and 18 patients with hepatitis C cirrhosis (HCV group). We analyzed the presence of acrolein, HNE (4-hydroxynonenal), and the major antioxidant transcription factor NRF2 (nuclear factor erythroid 2-related factor 2) in both biopsies. RESULTS The presence of acrolein and HNE in both biopsies indicates increased oxidative stress, while the decrease in these aldehydes in the indication biopsies indicates a decrease in oxidative stress over time, reflecting liver graft recovery. The absence of NRF2 in both biopsies reflects significantly reduced antioxidant protection in patients undergoing liver transplantation. CONCLUSION The results support the role of oxidative stress in the pathogenesis of ACR. The presence of acrolein and the absence of HNE in the indication biopsy in patients with ACR could contribute to the diagnosis of ACR in clinical practice when functional antibodies are tested in the clinical setting.
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Affiliation(s)
- Katarina Tomulic Brusich
- Department of Anesthesiology, Intensive Care and Pain Medicine, Clinical Hospital Centre Rijeka, 51000 Rijeka, Croatia.
| | - Anita Škrtić
- Department of Pathology and Cytology, University Hospital Merkur, Zagreb, Croatia; School of Medicine, University of Zagreb, Croatia
| | - Nikola Sobočan
- School of Medicine, University of Zagreb, Croatia; Department of Gastroenterology, University Hospital Merkur, Zagreb, Croatia, University of Zagreb, Croatia
| | - Ivana Acan
- Department of Anaesthesiology and Surgical Intensive Care, University Medical Center Ljubljana, Ljubljana, Slovenia
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Osna NA, Rasineni K, Ganesan M, Donohue TM, Kharbanda KK. Pathogenesis of Alcohol-Associated Liver Disease. J Clin Exp Hepatol 2022; 12:1492-1513. [PMID: 36340300 PMCID: PMC9630031 DOI: 10.1016/j.jceh.2022.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/25/2022] [Indexed: 12/12/2022] Open
Abstract
Excessive alcohol consumption is a global healthcare problem with enormous social, economic, and clinical consequences. While chronic, heavy alcohol consumption causes structural damage and/or disrupts normal organ function in virtually every tissue of the body, the liver sustains the greatest damage. This is primarily because the liver is the first to see alcohol absorbed from the gastrointestinal tract via the portal circulation and second, because the liver is the principal site of ethanol metabolism. Alcohol-induced damage remains one of the most prevalent disorders of the liver and a leading cause of death or transplantation from liver disease. Despite extensive research on the pathophysiology of this disease, there are still no targeted therapies available. Given the multifactorial mechanisms for alcohol-associated liver disease pathogenesis, it is conceivable that a multitherapeutic regimen is needed to treat different stages in the spectrum of this disease.
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Key Words
- AA, Arachidonic acid
- ADH, Alcohol dehydrogenase
- AH, Alcoholic hepatitis
- ALD, Alcohol-associated liver disease
- ALDH, Aldehyde dehydrogenase
- ALT, Alanine transaminase
- ASH, Alcohol-associated steatohepatitis
- AST, Aspartate transaminase
- AUD, Alcohol use disorder
- BHMT, Betaine-homocysteine-methyltransferase
- CD, Cluster of differentiation
- COX, Cycloxygenase
- CTLs, Cytotoxic T-lymphocytes
- CYP, Cytochrome P450
- CYP2E1, Cytochrome P450 2E1
- Cu/Zn SOD, Copper/zinc superoxide dismutase
- DAMPs, Damage-associated molecular patterns
- DC, Dendritic cells
- EDN1, Endothelin 1
- ER, Endoplasmic reticulum
- ETOH, Ethanol
- EVs, Extracellular vesicles
- FABP4, Fatty acid-binding protein 4
- FAF2, Fas-associated factor family member 2
- FMT, Fecal microbiota transplant
- Fn14, Fibroblast growth factor-inducible 14
- GHS-R1a, Growth hormone secretagogue receptor type 1a
- GI, GOsteopontinastrointestinal tract
- GSH Px, Glutathione peroxidase
- GSSG Rdx, Glutathione reductase
- GST, Glutathione-S-transferase
- GWAS, Genome-wide association studies
- H2O2, Hydrogen peroxide
- HA, Hyaluronan
- HCC, Hepatocellular carcinoma
- HNE, 4-hydroxynonenal
- HPMA, 3-hydroxypropylmercapturic acid
- HSC, Hepatic stellate cells
- HSD17B13, 17 beta hydroxy steroid dehydrogenase 13
- HSP 90, Heat shock protein 90
- IFN, Interferon
- IL, Interleukin
- IRF3, Interferon regulatory factor 3
- JAK, Janus kinase
- KC, Kupffer cells
- LCN2, Lipocalin 2
- M-D, Mallory–Denk
- MAA, Malondialdehyde-acetaldehyde protein adducts
- MAT, Methionine adenosyltransferase
- MCP, Macrophage chemotactic protein
- MDA, Malondialdehyde
- MIF, Macrophage migration inhibitory factor
- Mn SOD, Manganese superoxide dismutase
- Mt, Mitochondrial
- NK, Natural killer
- NKT, Natural killer T-lymphocytes
- OPN, Osteopontin
- PAMP, Pathogen-associated molecular patterns
- PNPLA3, Patatin-like phospholipase domain containing 3
- PUFA, Polyunsaturated fatty acid
- RIG1, Retinoic acid inducible gene 1
- SAH, S-adenosylhomocysteine
- SAM, S-adenosylmethionine
- SCD, Stearoyl-CoA desaturase
- STAT, Signal transduction and activator of transcription
- TIMP1, Tissue inhibitor matrix metalloproteinase 1
- TLR, Toll-like receptor
- TNF, Tumor necrosis factor-α
- alcohol
- alcohol-associated liver disease
- ethanol metabolism
- liver
- miRNA, MicroRNA
- p90RSK, 90 kDa ribosomal S6 kinase
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Affiliation(s)
- Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
| | - Karuna Rasineni
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
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Drugs of Abuse and Their Impact on Viral Pathogenesis. Viruses 2021; 13:v13122387. [PMID: 34960656 PMCID: PMC8707190 DOI: 10.3390/v13122387] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/23/2021] [Accepted: 11/27/2021] [Indexed: 02/07/2023] Open
Abstract
Commonly misused substances such as alcohol, cocaine, heroin, methamphetamine, and opioids suppress immune responses and may impact viral pathogenesis. In recent years, illicit use of opioids has fueled outbreaks of several viral pathogens, including the human immunodeficiency virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV). This review focuses on the myriad of mechanisms by which drugs of abuse impact viral replication and disease progression. Virus–drug interactions can accelerate viral disease progression and lead to increased risk of virus transmission.
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Stein MD, Herman DS, Kim HN, Howell A, Lambert A, Madden S, Moitra E, Blevins CE, Anderson BJ, Taylor LE, Pinkston MM. A Randomized Trial Comparing Brief Advice and Motivational Interviewing for Persons with HIV-HCV Co-infection Who Drink Alcohol. AIDS Behav 2021; 25:1013-1025. [PMID: 33047258 DOI: 10.1007/s10461-020-03062-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2020] [Indexed: 12/15/2022]
Abstract
Alcohol use contributes to the progression of liver disease in HIV-HCV co-infected persons, but alcohol interventions have never addressed low levels of alcohol use in this population. We enrolled 110 persons consuming at least 4 alcoholic drinks weekly in a clinical trial comparing two active 18-month long interventions, delivered every 3 months by phone, brief advice about drinking versus a motivational intervention. Final assessment was at 24 months. MI had larger reductions in alcohol use days than the BA arm at all follow-up assessments. The treatment by time effect was not significant for days of drinking (p = 0.470), mean drinks per day (p = 0.155), or for the continuous FIB-4 index (p = 0.175). Drinking declined in both conditions from baseline, but given the small sample, we do not have sufficient data to make any conclusion that one treatment is superior to the other.Trial Registry Trial registered at clinicaltrials.gov; Clinical Trial NCT02316184.
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Affiliation(s)
- Michael D Stein
- Behavioral Medicine and Addictions Research, Butler Hospital, Providence, RI, USA.
- Department of Health Law, Policy & Management, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118, USA.
| | - Debra S Herman
- Behavioral Medicine and Addictions Research, Butler Hospital, Providence, RI, USA
- Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - H Nina Kim
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Abigail Howell
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Audrey Lambert
- Department of Health Law, Policy & Management, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118, USA
| | | | - Ethan Moitra
- Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Claire E Blevins
- Behavioral Medicine and Addictions Research, Butler Hospital, Providence, RI, USA
- Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Bradley J Anderson
- Behavioral Medicine and Addictions Research, Butler Hospital, Providence, RI, USA
| | | | - Megan M Pinkston
- Warren Alpert Medical School of Brown University, Providence, RI, USA
- The Miriam Hospital, Providence, RI, USA
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Sobhanimonfared F, Bamdad T, Roohvand F. Cross talk between alcohol-induced oxidative stress and HCV replication. Arch Microbiol 2020; 202:1889-1898. [PMID: 32448963 DOI: 10.1007/s00203-020-01909-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 05/03/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023]
Abstract
Alcohol consumption exacerbates the pathogenesis of hepatitis C virus (HCV) infection and aggravates disease consequences in alcohol-abusing patients. Although the exact reasons by which alcohol consumption affects several cellular pathways in liver cells are not clear, they might be partially attributed to the ability of alcohol to further suppress the innate immunity, modulation of autophagy and also its relationship with reactive oxygen species (ROS) generation. To evaluate these issues, Huh7 cells harboring HCV replicon and Cytochrome p450 (CYP2E1) plasmid were exposed to ethanol and mRNA expression of Beclin-1, interferon-stimulated gene15 (ISG15) genes and HCV NS5B for two different times were relatively quantitated. ROS was determined by flow cytometry. The results showed that alcohol treatment in a short time caused an increase in HCV NS5B and Beclin-1 mRNA and decreased ISG 15 mRNA. Long-lasting alcohol treatment increased ROS production in Huh-7 cells and HCV replication was reduced. In conclusion, acute alcohol treatment might contribute to increase HCV replication by interference in innate immunity and induction of autophagy. Chronic alcohol treatment caused oxidative stress, which disrupts autophagy and thereby increased the rate of Huh7 cell injury.
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Affiliation(s)
- Fatemeh Sobhanimonfared
- Department of Virology, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Taravat Bamdad
- Department of Virology, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Farzin Roohvand
- Department of Virology, Pasteur Institute of Iran, No. 69, Pasteur Ave, 1316943551, Tehran, Iran
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Irvin R, Chander G, Ward KM, Manogue S, Falade-Nwulia O, Moon J, Sutcliffe CG, Brinkley S, Haselhuhn T, Katz S, Herne K, Arteaga L, Thomas DL, Mehta SH, Sulkowski MS. Unreported alcohol use was common but did not impact hepatitis C cure in HIV-infected persons who use drugs. J Viral Hepat 2020; 27:476-483. [PMID: 31854069 PMCID: PMC7890377 DOI: 10.1111/jvh.13251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/19/2019] [Accepted: 11/25/2019] [Indexed: 12/20/2022]
Abstract
We investigated the prevalence and impact of heavy alcohol use on the hepatitis C virus (HCV) care continuum amongst HIV/HCV co-infected persons who use drugs. In the CHAMPS study, 144 HIV/HCV co-infected persons were randomized to contingent cash incentives, peer mentors and usual care to evaluate the impact on HCV care. Alcohol use was ascertained using the 10-item AUDIT (hazardous: male ≥8, female ≥4) and phosphatidylethanol (PEth) (heavy: ≥50 ng/mL), an alcohol biomarker. Log binomial regression was used to evaluate the association between heavy alcohol use and failure to initiate treatment and to achieve sustained virologic response (SVR). Of the 135 participants with PEth data, median age was 55 years, 59% were male, 92% were Black, 91% reported a history of drug use, and 97% were on antiretroviral therapy. Hazardous drinking was reported on AUDIT by 28% of participants, and 35% had heavy alcohol use by PEth. Of the 47 individuals with a PEth ≥50 ng/mL, 23 (49%) reported no or minimal alcohol use by AUDIT. HCV treatment was initiated in 103 of 135 participants, and SVR was achieved in 92%. PEth ≥50 ng/mL (Relative Risk [RR] 0.72, 95% CI 0.35-1.48) was not significantly associated with failure to initiate HCV treatment or failure to achieve SVR (RR 0.85, 95% CI 0.46-1.57).In conclusion, alcohol use was common and frequently not detected by self-report. However, heavy alcohol use, even when measured objectively, was not associated with failure to initiate HCV treatment or to achieve cure.
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Affiliation(s)
- Risha Irvin
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Geetanjali Chander
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Kathleen M. Ward
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Sean Manogue
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Oluwaseun Falade-Nwulia
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Juhi Moon
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Catherine G. Sutcliffe
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Sherilyn Brinkley
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Taryn Haselhuhn
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Stephanie Katz
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Kayla Herne
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Lilian Arteaga
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - David L. Thomas
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Shruti H. Mehta
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Mark S. Sulkowski
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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Ing Lorenzini K, Girardin F. Direct-acting antiviral interactions with opioids, alcohol or illicit drugs of abuse in HCV-infected patients. Liver Int 2020; 40:32-44. [PMID: 31654604 DOI: 10.1111/liv.14283] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/17/2019] [Accepted: 10/15/2019] [Indexed: 02/13/2023]
Abstract
The hepatitis C virus (HCV) prevalence is extremely high in patients who consume and inject illicit drugs. Concerns about poor adherence and fear of interaction with drugs of abuse could constitute further disincentive for treatment initiation in these patients. We discussed the pharmacokinetics (PKs) and pharmacodynamics (PD) of currently prescribed direct antiviral agents (NSA5 inhibitors: daclatasvir, elbasvir, ledipasvir, pibrentasvir, velpatasvir; NS5B inhibitor: sofosbuvir; NS3/4A protease inhibitors: glecaprevir, grazoprevir, voxilaprevir) and most common substances of abuse (opioids: buprenorphine, fentanyl, heroin, methadone, morphine, oxycodone; stimulants: amphetamines, cathinones, cocaine; cannabinoids; ethanol). Overall, most direct-acting antivirals (DAAs) are substrates and inhibitors of the transmembrane transporter P-glycoprotein (P-gp), and several of them are metabolized by cytochrome P450 enzymes. Clinically relevant interactions are associated with P-gp and CYP3A modulators. Most substances of abuse are eliminated by Phase I and Phase II metabolizing enzymes, but none of them are either major inhibitors or inducers. PK studies did not show any relevant interactions between DAA and methadone or buprenorphine. Based on pharmacological considerations, neither efficacy loss nor adverse drug event associated with detrimental interaction are expected with opioids, stimulants, cannabinoids and ethanol. In summary, our literature review shows that the interaction potential of DAA with most opioids and illicit drugs is limited and should not be a hurdle to the initiate DAA.
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Affiliation(s)
- Kuntheavy Ing Lorenzini
- Division of Clinical Pharmacology and Toxicology, University Hospitals of Geneva, Geneva, Switzerland
| | - François Girardin
- Division of Clinical Pharmacology and Toxicology, University Hospitals of Geneva, Geneva, Switzerland
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Sims OT, Oh H, Pollio DE, Hong BA, Pollio EW, North CS. Quality of Life, Functioning, and Coping in HCV Patients Continuing Versus Ceasing Alcohol Use. Health Promot Pract 2019; 21:1012-1017. [PMID: 30895814 DOI: 10.1177/1524839919837968] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The purpose of this study was to compare quality of life, functioning, and coping among hepatitis C virus (HCV) patients who continued versus ceased alcohol use in the past year. HCV patients (n = 291) were recruited from three liver and infectious disease clinics. Student's t test was used to compare HCV patients who were former and active users of alcohol. The majority of HCV patients were male, African American, and without a high school degree. Compared to former users of alcohol, active users of alcohol self-reported lower ratings on home life, personal leisure, and overall quality of life. In the area of functioning, active users of alcohol self-reported lower ratings on home life, close relationships, sex life, and overall functioning. The two groups did not differ on coping. Most HCV clinicians advise HCV patients to avoid alcohol completely because of its adverse biological effects on the liver. Despite this important advice by their HCV clinicians, most HCV patients continue to use alcohol. HCV clinicians can additionally consider advising these patients that continued alcohol use is associated with lower quality of life and functioning as further evidence to convince these patients to avoid alcohol or to participate in alcohol cessation treatment.
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Affiliation(s)
- Omar T Sims
- University of Alabama at Birmingham, Birmingham, AL, USA.,University of California, San Francisco, CA, USA
| | - Hyejung Oh
- California State University, Bakersfield, CA, USA
| | - David E Pollio
- University of Alabama at Birmingham, Birmingham, AL, USA
| | - Barry A Hong
- Washington University in St. Louis, St. Louis, MO, USA
| | | | - Carol S North
- The Altshuler Center for Education & Research at Metrocare Services, Dallas, TX, USA.,University of Texas Southwestern Medical Center, Dallas, TX, USA
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Frost MC, Matson TE, Tsui JI, Williams EC. Influence of comorbid drug use disorder on receipt of evidence-based treatment for alcohol use disorder among VA patients with alcohol use disorder and Hepatitis C and/or HIV. Drug Alcohol Depend 2019; 194:288-295. [PMID: 30469100 PMCID: PMC6312483 DOI: 10.1016/j.drugalcdep.2018.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/08/2018] [Accepted: 10/16/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Alcohol use is risky for patients with hepatitis C virus (HCV) and/or human immunodeficiency virus (HIV) infection, but alcohol use disorder (AUD) treatment is underutilized in these populations. Comorbid drug use disorders (DUD) are common, but their influence on AUD treatment receipt is understudied. We evaluated the association between DUD and AUD treatment receipt in two national samples of patients with AUD, those with HIV and those with HCV, in the U.S. Veterans Health Administration. METHODS Samples included patients with AUD and HCV and/or HIV among positive alcohol screens (AUDIT-C≥5) documented 10/01/09-5/30/13 in the national electronic health record. Poisson regression models estimated incidence rate ratios for receiving specialty treatment (stop codes) and pharmacotherapy (filled prescription for naltrexone, disulfiram, acamprosate, or topiramate) within 365 days of positive alcohol screening for patients with DUD versus those without. Models were clustered on patient and adjusted for potential confounders. RESULTS Among 22,039 patients with HCV/AUD, 45.2% (N = 9,964) had DUD, which was associated with receiving specialty treatment [adjusted incidence rate ratio: 1.89 (95% confidence interval 1.82-1.96)] and pharmacotherapy [aIRR: 1.50 (1.37-1.65)]. Among 1,834 patients with HIV/AUD, 56.9% (N = 1,043) had DUD, which was associated with receiving specialty treatment [aIRR: 1.94 (1.68-2.24)], but not pharmacotherapy. CONCLUSIONS Rates of AUD treatment receipt among patients with AUD and HCV and/or HIV were low overall, but likelihood of treatment receipt was generally higher among those with comorbid DUD. Future research should investigate mechanisms underlying these associations, such as enhanced readiness for treatment or differential provider prescribing or referral practices.
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Affiliation(s)
- Madeline C Frost
- Health Services Research and Development (HSR&D) Center of Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, 1660 South Columbian Way, Seattle, WA, 98108, United States.
| | - Theresa E Matson
- Health Services Research and Development (HSR&D) Center of Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, 1660 South Columbian Way, Seattle, WA, 98108, United States; Kaiser Permanente Washington Health Research Institute, 1730 Minor Ave, Seattle, WA, 98101, United States.
| | - Judith I Tsui
- Department of Medicine, University of Washington School of Medicine, 1959 NE Pacific St, Seattle, WA, 98195, United States.
| | - Emily C Williams
- Health Services Research and Development (HSR&D) Center of Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, 1660 South Columbian Way, Seattle, WA, 98108, United States; Department of Health Services, University of Washington School of Public Health, 1959 NE Pacific St, Seattle, WA, 98195, United States.
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11
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Alcohol-induced autophagy via upregulation of PIASy promotes HCV replication in human hepatoma cells. Cell Death Dis 2018; 9:898. [PMID: 30185779 PMCID: PMC6123814 DOI: 10.1038/s41419-018-0845-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/28/2018] [Accepted: 07/02/2018] [Indexed: 02/07/2023]
Abstract
Both alcohol and hepatitis C virus (HCV) infection could induce cellular autophagy in liver cells, which is considered to be essential for productive HCV replication. However, whether alcohol-induced autophagy is involved in the pathogenesis of HCV infection is still poorly understood. Alcohol treatment could induce autophagy in Huh7 cells (a hepatoma cell line that supports HCV JFH-1 replication), evidenced by the increase of LC3B-II levels, the conversion of LC3B-I to LC3B-II, and the formation of GFP-LC3 puncta as well as the decrease of p62 level in alcohol-treated cells compared with control cells. Alcohol treatment also significantly increased PIASy (a member of the PIAS family) expression, which can act as a SUMO (small ubiquitin-like modifier protein) E3 ligase to regulate a broader range of cellular processes including autophagy. Overexpression or the silencing expression of PIASy in alcohol-treated Huh7 cells could increase or decrease autophagic activation caused by alcohol treatment, respectively, and thus affect HCV replication correspondingly. In the absence of alcohol, overexpression or silencing expression of PIASy increase or decrease the level of cellular autophagy, judged by the changes of LC3B-II and p62 levels in the presence or absence of chloroquine (CQ), a lysosome inhibitor. More importantly, in the presence of 3-methyladenine (3-MA), an inhibitor in the early stage of autophagy, the effects of overexpression or silencing expression of PIASy on HCV replication were largely blocked. Furthermore, PIASy could selectively drive the accumulation of SUMO1-conjugated proteins, along with upregulation of the expression of several important autophagy factors, including ATG7 and ATG5–ATG12. In conclusion, alcohol promotes HCV replication through activation of autophagy in Huh7 cells, which partly attributes to its induction of PIASy expression. PIASy-enhanced accumulation of SUMO1-conjugated proteins may contribute to its inducing effect of autophagy. Our findings provide a novel mechanism for the action of alcohol-promoting HCV replication in the context of cellular autophagy.
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VIEIRA-CASTRO ACM, OLIVEIRA LCMD. Impact of alcohol consumption among patients in hepatitis C virus treatment. ARQUIVOS DE GASTROENTEROLOGIA 2017; 54:232-237. [DOI: 10.1590/s0004-2803.201700000-33] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/17/2017] [Indexed: 01/15/2023]
Abstract
ABSTRACT BACKGROUND: Recent studies have questioned the recommendation of abstinence from alcohol for at least 6 months for alcoholic patients to be treated for hepatitis C. OBJECTIVE: The present study aimed to assess the impact of alcohol consumption among patients undergoing hepatitis C treatment. METHODS: In this cross-sectional study, 121 patients [78 (64.5%) men; 28-70 years] were evaluated. They were divided as follows: patients who consumed <12 g of ethanol/day throughout life (Group 1), 12-59 g/day (Group 2) and ≥60 g/day (Group 3). Patients were treated with pegylated-interferon plus ribavirin. RESULTS: These three groups could not be distinguished in terms of the severity of liver fibrosis and frequency of HCV genotype-1 infection. In Group 3, treatment discontinuation (32.4%) was higher than in the Group 1 (9.4%) or Group 2 (0%), it was higher among patients who drank during treatment (66.7% vs 21.4%) and among those who had not been abstinent for at least 6 months (72.7% vs 15.4%). Moderate alcohol drinkers showed good adherence and did not discontinue the treatment. The frequencies of sustained viral response among patients in Group 3 (44.4%) were similar to those in Group 1 (61%) and Group 2 (68.4%). CONCLUSION: Heavy drinkers more often discontinued treatment for hepatitis C, but those that received this treatment had acceptable sustained viral response rates. These results suggest that heavy drinkers should not be systematically excluded from the treatment, but they should be monitored to avoid drinking and abandoning treatment, mainly those who have not been abstinent for at least 6 months.
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Tsui JI, Mirzazadeh A, Hahn JA, Maher L, Bruneau J, Grebely J, Hellard M, Kim AY, Shoukry NH, Cox AL, Prins M, Dore G, Lauer G, Lloyd A, Page K. The effects of alcohol on spontaneous clearance of acute hepatitis C virus infection in females versus males. Drug Alcohol Depend 2016; 169:156-162. [PMID: 27816863 PMCID: PMC5328754 DOI: 10.1016/j.drugalcdep.2016.10.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 10/11/2016] [Accepted: 10/12/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND Approximately one quarter of persons exposed to hepatitis C virus (HCV) will spontaneously clear infection. We undertook this study to investigate the impact of alcohol on likelihood of HCV spontaneous viral clearance stratified by sex groups. METHODS Pooled data from an international collaboration of prospective observational studies of incident HIV and HCV infection in high-risk cohorts (the InC3 Study) was restricted to 411 persons (or 560.7 person-years of observation) with documented acute HCV infection and data regarding alcohol use. The predictor of interest was self-reported alcohol use at or after estimated date of incident HCV infection and the outcome was HCV spontaneous clearance. Sex stratified Cox proportional hazards models were used to evaluate the association between alcohol and spontaneous clearance, adjusting for age, race/ethnicity, and IFNL4 genotype. RESULTS The median age was 28.5 years, 30.4% were women, 87.2% were white, and 71.8% reported alcohol use at or after incident infection. There were 89 (21.6%) cases of spontaneous clearance observed, 39 (31.2%) among women and 50 (17.5%) in men (p<0.01). Overall, spontaneous clearance occurred less frequently among participants who drank alcohol compared to those who did not drink (18.9% v. 28.5%, p=0.03). After adjustment for other covariates, alcohol was significantly and independently associated with lower relative hazards for spontaneous clearance of HCV in women (AHR=0.35; 95% CI: 0.19-0.66; p=0.001) but not in men (AHR=0.63; 95% CI: 0.36-1.09; p=0.10). CONCLUSION Results indicate that abstaining from drinking alcohol may increase the likelihood of spontaneous clearance among women.
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Affiliation(s)
- Judith I. Tsui
- Division of General Internal Medicine, Department of Medicine, University of Washington, 325 9th Avenue Seattle, WA 98104, USA,Corresponding author (JT)
| | - Ali Mirzazadeh
- Department of Epidemiology and Biostatistics, University of California, San Francisco, 550 16th Street, Second Floor, San Francisco, CA 94158, USA
| | - Judith A. Hahn
- Department of Epidemiology and Biostatistics, University of California, San Francisco, 550 16th Street, Second Floor, San Francisco, CA 94158, USA, Department of Medicine, University of California, San Francisco, 3333 California Street, Suite 430, San Francisco, CA 94118, USA
| | - Lisa Maher
- The Kirby Institute, University of New South Wales, Wallace Wurth Building, UNSW Australia, Sydney NSW 2052, Australia
| | - Julie Bruneau
- Centre de Recherche du CHUM, Université de Montréal, 900 Rue Saint-Denis, Montréal, QC H2X 0A9, Canada
| | - Jason Grebely
- The Kirby Institute, University of New South Wales, Wallace Wurth Building, UNSW Australia, Sydney NSW 2052, Australia
| | - Margaret Hellard
- Burnet Institute, 85 Commercial Rd, Melbourne VIC 3004, Australia
| | - Arthur Y. Kim
- Harvard Medical School, 25 Shattuck St, Boston, MA 02115, USA
| | - Naglaa H. Shoukry
- Centre de Recherche du CHUM, Université de Montréal, 900 Rue Saint-Denis, Montréal, QC H2X 0A9, Canada
| | - Andrea L. Cox
- Department of Medicine, Johns Hopkins Medical Institutions, 1830 E. Monument Street, Baltimore, MD 21287, USA
| | - Maria Prins
- Cluster Infectious Diseases, GGD Public Health Service of Amsterdam, Nieuwe Achtergracht 100, 1018 WT Amsterdam, Postbus 2200, 1000 CE Amsterdam, The Netherlands
| | - Gregory Dore
- The Kirby Institute, University of New South Wales, Wallace Wurth Building, UNSW Australia, Sydney NSW 2052, Australia
| | - Georg Lauer
- Harvard Medical School, 25 Shattuck St, Boston, MA 02115, USA
| | - Andrew Lloyd
- University of New South Wales, School of Medical Sciences, Wallace Wurth Building, UNSW Australia, Sydney NSW 2052, Australia
| | - Kimberly Page
- Department of Internal Medicine, Division of Epidemiology, Biostatistics and Preventive Medicine, University of New Mexico Health Sciences Center, 1 University of New Mexico, Albuquerque, New Mexico 87131 USA
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Sims OT, Maynard QR, Melton PA. Behavioral Interventions to Reduce Alcohol Use Among Patients with Hepatitis C: A Systematic Review. SOCIAL WORK IN PUBLIC HEALTH 2016; 31:565-73. [PMID: 27295132 DOI: 10.1080/19371918.2016.1160346] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Alcohol use is a barrier to pharmacologic treatment for hepatitis C virus (HCV). It is advantageous for medical and clinical social workers engaged in HCV care to be knowledgeable of behavioral interventions that can be used to reduce alcohol use among patients with HCV. This article identifies and describes studies that designed and implemented behavioral interventions to reduce alcohol use among patients with HCV in clinical settings. To achieve this goal, this article conducts a rigorous systematic review to identify peer-reviewed articles, describes each behavioral intervention, and reports primary outcomes of each study included in the review.
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Affiliation(s)
- Omar T Sims
- a Department of Social Work, College of Arts and Sciences , The University of Alabama at Birmingham , Birmingham , Alabama , USA
- b Department of Health Behavior, School of Public Health , The University of Alabama at Birmingham , Birmingham , Alabama , USA
- c Center for AIDS Research, The University of Alabama at Birmingham , Birmingham , Alabama , USA
- d Center for Comprehensive Healthy Aging, The University of Alabama at Birmingham , Birmingham , Alabama , USA
| | - Quentin R Maynard
- e School of Social Work, The University of Alabama , Tuscaloosa , Alabama , USA
| | - Pam A Melton
- e School of Social Work, The University of Alabama , Tuscaloosa , Alabama , USA
- f School of Social Work, Tulane University , New Orleans , Louisiana , USA
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Novo-Veleiro I, Alvela-Suárez L, Chamorro AJ, González-Sarmiento R, Laso FJ, Marcos M. Alcoholic liver disease and hepatitis C virus infection. World J Gastroenterol 2016. [PMID: 26819510 DOI: 10.3748/wjg.v22.i4.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Alcohol consumption and hepatitis C virus (HCV) infection have a synergic hepatotoxic effect, and the coexistence of these factors increases the risk of advanced liver disease. The main mechanisms of this effect are increased viral replication and altered immune response, although genetic predisposition may also play an important role. Traditionally, HCV prevalence has been considered to be higher (up to 50%) in alcoholic patients than in the general population. However, the presence of advanced alcoholic liver disease (ALD) or intravenous drug use (IDU) may have confounded the results of previous studies, and the real prevalence of HCV infection in alcoholic patients without ALD or prior IDU has been shown to be lower. Due to the toxic combined effect of HCV and alcohol, patients with HCV infection should be screened for excessive ethanol intake. Patients starting treatment for HCV infection should be specifically advised to stop or reduce alcohol consumption because of its potential impact on treatment efficacy and adherence and may benefit from additional support during antiviral therapy. This recommendation might be extended to all currently recommended drugs for HCV treatment. Patients with alcohol dependence and HCV infection, can be treated with acamprosate, nalmefene, topiramate, and disulfiram, although baclofen is the only drug specifically tested for this purpose in patients with ALD and/or HCV infection.
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Affiliation(s)
- Ignacio Novo-Veleiro
- Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Department of Internal Medicine, University Hospital of Santiago de Compostela, 37007 Salamanca, Spain
| | - Lucía Alvela-Suárez
- Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Department of Internal Medicine, University Hospital of Santiago de Compostela, 37007 Salamanca, Spain
| | - Antonio-Javier Chamorro
- Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Department of Internal Medicine, University Hospital of Santiago de Compostela, 37007 Salamanca, Spain
| | - Rogelio González-Sarmiento
- Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Department of Internal Medicine, University Hospital of Santiago de Compostela, 37007 Salamanca, Spain
| | - Francisco-Javier Laso
- Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Department of Internal Medicine, University Hospital of Santiago de Compostela, 37007 Salamanca, Spain
| | - Miguel Marcos
- Ignacio Novo-Veleiro, Lucía Alvela-Suárez, Department of Internal Medicine, University Hospital of Santiago de Compostela, 37007 Salamanca, Spain
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Novo-Veleiro I, Alvela-Suárez L, Chamorro AJ, González-Sarmiento R, Laso FJ, Marcos M. Alcoholic liver disease and hepatitis C virus infection. World J Gastroenterol 2016; 22:1411-1420. [PMID: 26819510 PMCID: PMC4721976 DOI: 10.3748/wjg.v22.i4.1411] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/01/2015] [Accepted: 12/01/2015] [Indexed: 02/06/2023] Open
Abstract
Alcohol consumption and hepatitis C virus (HCV) infection have a synergic hepatotoxic effect, and the coexistence of these factors increases the risk of advanced liver disease. The main mechanisms of this effect are increased viral replication and altered immune response, although genetic predisposition may also play an important role. Traditionally, HCV prevalence has been considered to be higher (up to 50%) in alcoholic patients than in the general population. However, the presence of advanced alcoholic liver disease (ALD) or intravenous drug use (IDU) may have confounded the results of previous studies, and the real prevalence of HCV infection in alcoholic patients without ALD or prior IDU has been shown to be lower. Due to the toxic combined effect of HCV and alcohol, patients with HCV infection should be screened for excessive ethanol intake. Patients starting treatment for HCV infection should be specifically advised to stop or reduce alcohol consumption because of its potential impact on treatment efficacy and adherence and may benefit from additional support during antiviral therapy. This recommendation might be extended to all currently recommended drugs for HCV treatment. Patients with alcohol dependence and HCV infection, can be treated with acamprosate, nalmefene, topiramate, and disulfiram, although baclofen is the only drug specifically tested for this purpose in patients with ALD and/or HCV infection.
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Silva MJ, Calinas F. Spontaneous clearance of hepatitis C virus during alcoholic hepatitis: the alcohol killed the virus? BMJ Case Rep 2015; 2015:bcr-2015-211896. [PMID: 26483390 DOI: 10.1136/bcr-2015-211896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Spontaneous clearance of hepatitis C virus during chronic infection is uncommon. We report the case of a patient who cleared hepatitis C virus during an episode of presumed alcoholic hepatitis. A brief discussion on the immunological aspects of chronic hepatitis C and the impact of alcohol consumption on it is presented as well.
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Affiliation(s)
- Mário Jorge Silva
- Gastroenterology Department, Central Lisbon Hospital Centre, Lisboa, Portugal
| | - Filipe Calinas
- Gastroenterology Department, Central Lisbon Hospital Centre, Lisboa, Portugal
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Bogdanowicz KM, Stewart R, Broadbent M, Hatch SL, Hotopf M, Strang J, Hayes RD. Double trouble: Psychiatric comorbidity and opioid addiction-all-cause and cause-specific mortality. Drug Alcohol Depend 2015; 148:85-92. [PMID: 25578253 DOI: 10.1016/j.drugalcdep.2014.12.025] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/29/2014] [Accepted: 12/17/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Opioid misusers have recognized high mortality but the influence of psychiatric comorbidity in excess cause-specific mortality is unclear. METHODS Opioid use disorder (OUD) patients were identified in the South London and Maudsley Case Register. Deaths were identified through database linkage to the national mortality dataset. Standard mortality ratios were calculated to compare mortality risk with the general population. Cox and competing risk regression models were used to investigate the effect of psychiatric comorbidity and psychological health on all-cause and cause-specific mortality (respectively) in OUD patients. RESULTS Of 4837 OUD patients, 176 had died. Mortality rates were substantially higher than the general population (SMR 4.23; 95%CI 3.63-4.90). Among those with OUD, comorbid personality disorder (PD) and comorbid alcohol use disorder (AUD) was associated with increased all-cause mortality in all models, including the fully adjusted model, controlling for socio-demographic factors, severity of drug use, risk behaviours and physical health (HR2.15, 95%CI 1.17-3.95; HR2.28, 95%CI 1.54-3.36). AUD was associated with increased risk of fatal overdose (HR2.57, 95%CI 1.26-5.26) and hepatic-related deaths (HR7.26, 95%CI 2.79-18.86). Individuals with OUD and comorbid PD had almost four times greater risk of liver related deaths compared to those without PD (HR3.76, 95%CI 1.21-11.74). Comorbid severe mental illness and poor psychological health were not associated with increased mortality. CONCLUSIONS This study highlights the importance of assessment for PD and AUD in OUD patients in order to identify individuals at substantially elevated mortality risk to enable a more personalized approach to their medical care.
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Affiliation(s)
| | - Robert Stewart
- King's College London, Institute of Psychiatry, London SE5 8AF, UK
| | | | - Stephani L Hatch
- King's College London, Institute of Psychiatry, London SE5 8AF, UK
| | - Matthew Hotopf
- King's College London, Institute of Psychiatry, London SE5 8AF, UK
| | - John Strang
- King's College London, Institute of Psychiatry, London SE5 8AF, UK; South London and Maudsley NHS Foundation Trust, London SE5 8AZ, UK
| | - Richard D Hayes
- King's College London, Institute of Psychiatry, London SE5 8AF, UK.
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North CS, Sims O, Hong BA, Jain MK, Brown G, Lisker-Melman M, Pollio DE. An empirical study of alcohol consumption by patients considering HCV treatment. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2014; 40:484-9. [PMID: 25140981 DOI: 10.3109/00952990.2014.945592] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Alcohol accelerates the course of hepatitis C (HCV) infection and liver damage. Little is known about recency of alcohol use among patients with HCV. OBJECTIVES Alcohol consumption recency was compared among HCV patients with and without alcohol use disorders and current and lifetime alcohol use histories. METHODS Patients considering antiviral treatment for HCV (n = 309) recruited from university-affiliated and VA liver and infectious disease clinics were assessed for lifetime and current-year psychiatric disorders and alcohol-use patterns. Full diagnostic interviews, self-report surveys, medical record review, and urine screening for recent alcohol and drug use were conducted. RESULTS 60% used alcohol in the last year. Besides alcohol history, those who stopped using alcohol in the past year differed from those with no lifetime use only in gender (60% vs. 22%); however, patients no longer using alcohol in the last year were less likely than those still using to have a current drug use disorder (16% vs. 3%) or last-month drug use (52% vs. 30%), and had fewer current risky behaviors (1.3 vs. 0.6). Among patients with last-year alcohol use, those with past alcohol use disorders differed from those without only by higher prevalence of drug use disorder (84% vs. 47%) and drug use after HCV diagnosis (67% vs. 43%). CONCLUSIONS Patients who had stopped using alcohol for at least a year were much like those who never used alcohol in regard to other drug use, psychiatric history, smoking, and risky behaviors. These findings indicate that HCV patients with at least a year of abstinence from alcohol, including those with a history of alcohol use disorder, should be considered HCV treatment candidates.
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Affiliation(s)
- Carol S North
- VA North Texas Health Care System and The University of Texas Southwestern Medical Center, Departments of Psychiatry and Surgery/Division of Emergency Medicine , Dallas , TX, USA
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Kawaguchi Y, Mizuta T. Interaction between hepatitis C virus and metabolic factors. World J Gastroenterol 2014; 20:2888-2901. [PMID: 24659880 PMCID: PMC3961972 DOI: 10.3748/wjg.v20.i11.2888] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/15/2013] [Accepted: 01/06/2014] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) infection disrupts the normal metabolism processes, but is also influenced by several of the host’s metabolic factors. An obvious and significantly detrimental pathophysiological feature of HCV infection is insulin resistance in hepatic and peripheral tissues. Substantial research efforts have been put forth recently to elucidate the molecular mechanism of HCV-induced insulin resistance, and several cytokines, such as tumor necrosis factor-α, have been identified as important contributors to the development of insulin resistance in the distant peripheral tissues of HCV-infected patients and animal models. The demonstrated etiologies of HCV-induced whole-body insulin resistance include oxidative stress, lipid metabolism abnormalities, hepatic steatosis and iron overload. In addition, myriad effects of this condition have been characterized, including glucose intolerance, resistance to antiviral therapy, progression of hepatic fibrosis, development of hepatocellular carcinoma, and general decrease in quality of life. Metabolic-related conditions and disorders, such as visceral obesity and diabetes mellitus, have been shown to synergistically enhance HCV-induced metabolic disturbance, and are associated with worse prognosis. Yet, the molecular interactions between HCV-induced metabolic disturbance and host-associated metabolic factors remain largely unknown. The diet and lifestyle recommendations for chronic hepatitis C are basically the same as those for obesity, diabetes, and metabolic syndrome. Specifically, patients are suggested to restrict their dietary iron intake, abstain from alcohol and tobacco, and increase their intake of green tea and coffee (to attain the beneficial effects of caffeine and polyphenols). While successful clinical management of HCV-infected patients with metabolic disorders has also been achieved with some anti-diabetic (i.e., metformin) and anti-lipid (i.e., statins) medications, it is recommended that sulfonylurea and insulin be avoided.
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Fuster D, Tsui JI, Cheng DM, Quinn EK, Bridden C, Nunes D, Libman H, Saitz R, Samet JH. Impact of lifetime alcohol use on liver fibrosis in a population of HIV-infected patients with and without hepatitis C coinfection. Alcohol Clin Exp Res 2013; 37:1527-35. [PMID: 23647488 DOI: 10.1111/acer.12129] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 01/23/2013] [Indexed: 01/14/2023]
Abstract
BACKGROUND The effect of alcohol on liver disease in HIV infection has not been well characterized. METHODS We performed a cross-sectional multivariable analysis of the association between lifetime alcohol use and liver fibrosis in a longitudinal cohort of HIV-infected patients with alcohol problems. Liver fibrosis was estimated with 2 noninvasive indices, "FIB-4," which includes platelets, liver enzymes, and age; and aspartate aminotransferase/platelet ratio index ("APRI"), which includes platelets and liver enzymes. FIB-4 <1.45 and APRI <0.5 defined the absence of liver fibrosis. FIB-4 >3.25 and APRI >1.5 defined advanced liver fibrosis. The main independent variable was lifetime alcohol consumption (<150 kg, 150 to 600 kg, >600 kg). RESULTS Subjects (n = 308) were 73% men, mean age 43 years, 49% with hepatitis C virus (HCV) infection, 60% on antiretroviral therapy, 49% with an HIV RNA load <1,000 copies/ml, and 18.7% with a CD4 count <200 cells/mm(3) . Forty-five percent had lifetime alcohol consumption >600 kg, 32.7% 150 to 600 kg, and 22.3% <150 kg; 33% had current heavy alcohol use, and 69% had >9 years of heavy episodic drinking. Sixty-one percent had absence of liver fibrosis and 10% had advanced liver fibrosis based on FIB-4. In logistic regression analyses, controlling for age, gender, HCV infection, and CD4 count, no association was detected between lifetime alcohol consumption and the absence of liver fibrosis (FIB-4 <1.45) (adjusted odds ratio [AOR] = 1.12 [95% CI: 0.25 to 2.52] for 150 to 600 kg vs. <150 kg; AOR = 1.11 [95% CI: 0.52 to 2.36] for >600 kg vs. <150 kg; global p = 0.95). Additionally, no association was detected between lifetime alcohol use and advanced liver fibrosis (FIB-4 >3.25). Results were similar using APRI, and among those with and without HCV infection. CONCLUSIONS In this cohort of HIV-infected patients with alcohol problems, we found no significant association between lifetime alcohol consumption and the absence of liver fibrosis or the presence of advanced liver fibrosis, suggesting that alcohol may be less important than other known factors that promote liver fibrosis in this population.
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Affiliation(s)
- Daniel Fuster
- Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Department of Medicine , Boston Medical Center and Boston University School of Medicine, Boston, Massachusetts
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Stephens DB, Havens JR. Predictors of alcohol use among rural drug users after disclosure of hepatitis C virus status. J Stud Alcohol Drugs 2013; 74:386-95. [PMID: 23490567 PMCID: PMC3602359 DOI: 10.15288/jsad.2013.74.386] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 10/29/2012] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE Alcohol consumption dramatically increases the risk of liver damage among those with hepatitis C virus (HCV) infection, yet the impact of HCV status disclosure and standard informational counseling on alcohol use among rural drug users remains poorly understood. METHOD In this prospective study, 503 rural Appalachian drug users were recruited using respondent-driven sampling. Participants were tested for HCV antibodies, and data on sociodemographic characteristics, lifetime and past-30-day drug and alcohol use, and psychiatric disorders were collected by interviewer-administered questionnaires. A total of 470 participants returned after 6 months for follow-up; however,4 of those had no history of alcohol use, thus leaving a final sample size of 466. Multivariate negative binomial regression was used to determine the effect of disclosure of HCV status and posttest counseling on alcohol consumption at follow-up. RESULTS Despite an overall decrease in drinking frequency in the cohort, those who were HCV-positive were drinking at a frequency similar to their HCV-negative counterparts at follow-up, despite posttest counseling informing them of the risks of alcohol use with an HCV diagnosis (adjusted incidence rate ratio = 1.07, 95% CI [0.72, 1.61]). Significant predictors of increased days of alcohol use after 6 months included baseline alcohol use, baseline marijuana use, and meeting the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, criteria for antisocial personality disorder. Those using OxyContin at baseline had significantly fewer days of alcohol use at follow-up. CONCLUSIONS HCV status disclosure and standard informational counseling alone do not curtail drinking among HCV-positive drug users in the rural setting. Targeted interventions with regard to alcohol use are warranted in order to mitigate the damage of the HCV epidemic.
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Affiliation(s)
- Dustin B. Stephens
- Center on Drug and Alcohol Research, Department of
Behavioral Science, University of Kentucky College of Medicine,
Lexington,Kentucky
| | - Jennifer R. Havens
- Center on Drug and Alcohol Research, Department of
Behavioral Science, University of Kentucky College of Medicine,
Lexington,Kentucky
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Interplay between Hepatitis C Virus and Redox Cell Signaling. Int J Mol Sci 2013; 14:4705-21. [PMID: 23443167 PMCID: PMC3634496 DOI: 10.3390/ijms14034705] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 02/13/2013] [Accepted: 02/17/2013] [Indexed: 12/14/2022] Open
Abstract
Hepatitis C virus (HCV) infects approximately 3% of the world’s population. Currently licensed treatment of HCV chronic infection with pegylated-interferon-α and ribavirin, is not fully effective against all HCV genotypes and is associated to severe side effects. Thus, development of novel therapeutics and identification of new targets for treatment of HCV infection is necessary. Current opinion is orienting to target antiviral drug discovery to the host cell pathways on which the virus relies, instead of against viral structures. Many intracellular signaling pathways manipulated by HCV for its own replication are finely regulated by the oxido-reductive (redox) state of the host cell. At the same time, HCV induces oxidative stress that has been found to affect both virus replication as well as progression and severity of HCV infection. A dual role, positive or negative, for the host cell oxidized conditions on HCV replication has been reported so far. This review examines current information about the effect of oxidative stress on HCV life cycle and the main redox-regulated intracellular pathways activated during HCV infection and involved in its replication.
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Kumar S, Jin M, Ande A, Sinha N, Silverstein PS, Kumar A. Alcohol consumption effect on antiretroviral therapy and HIV-1 pathogenesis: role of cytochrome P450 isozymes. Expert Opin Drug Metab Toxicol 2012; 8:1363-75. [PMID: 22871069 PMCID: PMC4033313 DOI: 10.1517/17425255.2012.714366] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Alcohol consumption, which is highly prevalent in HIV-infected individuals, poses serious concerns in terms of rate of acquisition of HIV-1 infection, HIV-1 replication, response to highly active antiretroviral therapy (HAART) and AIDS/neuroAIDS progression. However, little is known about the mechanistic pathways by which alcohol exerts these effects, especially with respect to HIV-1 replication and the patient's response to HAART. AREAS COVERED In this review, the authors discuss the effects of alcohol consumption on HIV-1 pathogenesis and its effect on HAART. They also describe the role of cytochrome P450 2E1 (CYP2E1) in alcohol-mediated oxidative stress and toxicity, and the role of CYP3A4 in the metabolism of drugs used in HAART (i.e., protease inhibitors (PI) and non-nucleoside reverse transcriptase inhibitors (NNRTI)). Based on the most recent findings the authors discuss the role of CYP2E1 in alcohol-mediated oxidative stress in monocytes/macrophages and astrocytes, as well as the role of CYP3A4 in alcohol-PI interactions leading to altered metabolism of PI in these cells. EXPERT OPINION The authors propose that alcohol and PI/NNRTI interact synergistically in monocytes/macrophages and astrocytes through the CYP pathway leading to an increase in oxidative stress and a decrease in response to HAART. Ultimately, this exacerbates HIV-1 pathogenesis and neuroAIDS.
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Affiliation(s)
- Santosh Kumar
- University of Missouri Kansas City, School of Pharmacy, 2464 Charlotte St., Kansas City, MO 64108, USA.
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Aman W, Mousa S, Shiha G, Mousa SA. Current status and future directions in the management of chronic hepatitis C. Virol J 2012; 9:57. [PMID: 22385500 PMCID: PMC3325870 DOI: 10.1186/1743-422x-9-57] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 03/02/2012] [Indexed: 12/20/2022] Open
Abstract
Hepatitis C virus (HCV) is endemic worldwide, and it causes cirrhosis and other complications that often lead to death; nevertheless, our knowledge of the disease and its mechanisms is limited. HCV is most common in underdeveloped nations, including many in Africa and Asia. The virus is usually transmitted by parenteral routes, but sexual, perinatal, and other types of transfer have been known to occur. Approximately 80% of individuals who contract hepatitis C develop a chronic infection, and very few are able to spontaneously clear the virus. Because hepatitis C is asymptomatic in the majority of patients, the presence of HCV RNA in the serum is the best diagnostic tool. Although serious complications from hepatitis C may not occur for 20 years, 1/5 of chronic patients eventually develop life - threatening cirrhosis. More research is needed on the different therapy options for the disease, and many factors, most importantly the genotype of the virus, must be taken into account before beginning any treatment. As there is no vaccine against HCV at present, the most effective and recommended therapy is pegylated-interferon-α-2a plus ribavirin. While interferon is marginally effective as a monotherapy, both adding the moiety and combining it with ribavirin have been shown to dramatically increase its potency. While there are numerous alternative and complementary medicines available for patients with hepatitis C, their efficacy is questionable. Currently, research is being done to investigate other possible treatments for hepatitis C, and progress is being made to develop a vaccine against HCV, despite the many challenges the virus presents. Until such a vaccination is available, prevention and control methods are important in containing and impeding the spread of the virus and mitigating its deleterious effects on the health of people and communities worldwide.
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Affiliation(s)
- Wosen Aman
- The Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, USA
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Pang M, Bala S, Kodys K, Catalano D, Szabo G. Inhibition of TLR8- and TLR4-induced Type I IFN induction by alcohol is different from its effects on inflammatory cytokine production in monocytes. BMC Immunol 2011; 12:55. [PMID: 21962237 PMCID: PMC3203086 DOI: 10.1186/1471-2172-12-55] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Accepted: 09/30/2011] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Prolonged alcohol consumption is a significant co-factor in the progression of chronic viral infections including hepatitis C and HIV, which are both single-stranded RNA viruses. Toll like receptor 8 (TLR8), a pattern recognition receptor expressed in monocytes, senses viral single stranded RNA as a danger signal and leads to the induction of Type I interferon (IFN) as well as the pro-inflammatory cytokine, tumor necrosis factor alpha (TNF alpha). Lipopolysaccharide (LPS), a Toll like receptor 4 (TLR4) ligand, was shown to affect inflammatory cell activation after alcohol consumption and in HIV and HCV infections. Here we hypothesized that alcohol exposure modulates TLR8- and TLR4-ligand-induced monocyte activation and affects both type I IFN and inflammatory cytokine induction. RESULTS The TLR8 ligand, CL075, as well as the TLR4 ligand, LPS, resulted in a significant induction of TNF alpha both at the mRNA and protein levels in human monocytes. We found that both acute and prolonged alcohol treatment resulted in inhibition of type I IFN induction by either TLR8 or TLR4 ligands in human monocytes at the protein and mRNA levels. In contrast to Type I IFN production, the effects of acute and prolonged alcohol were different on inflammatory cytokine activation after TLR8 or TLR4 ligand stimulation. Acute alcohol inhibited TLR8- or TLR4-induced TNF alpha protein and mRNA induction while it augmented IL-10 production in monocytes. In contrast, prolonged alcohol treatment augmented TNF alpha without affecting IL-10 production significantly in response to either TLR8 or TLR4 ligand stimulation. CONCLUSIONS These novel results suggest first, that alcohol has a profound inhibitory effect on Type I IFN induction regardless of intracellular (TLR8) or cell surface-derived (TLR4) danger signals. Second, both acute and prolonged alcohol exposure can inhibit antiviral Type I IFN pathway activation. Third, the opposite effects of acute (inhibitory) and prolonged alcohol (augmentation) treatment on pro-inflammatory cytokine activation extend to TLR8-induced signals beyond the previously shown TLR4/LPS pathway.
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Affiliation(s)
- Maoyin Pang
- Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA 01605, USA
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Tohra SK, Taneja S, Ghosh S, Sharma BK, Duseja A, Dhiman RK, Das A, Chawla YK. Prediction of sustained virological response to combination therapy with pegylated interferon alfa and ribavirin in patients with genotype 3 chronic hepatitis C. Dig Dis Sci 2011; 56:2449-55. [PMID: 21706207 DOI: 10.1007/s10620-011-1770-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 05/26/2011] [Indexed: 01/22/2023]
Abstract
BACKGROUND Sustained virological response (SVR) rates in patients with hepatitis C are heterogeneous and are influenced by a wide range of host and viral factors. AIM To evaluate the efficacy of combination therapy with pegylated interferon alfa (PEG-IFN-α) and ribavirin (RBV), and document the SVR rates taking into consideration various predictive factors in patients with chronic hepatitis C (CHC) genotype 3. METHODS Ninety-seven treatment-naive patients with CHC genotype 3 (mean age 41.46±11.51 years, M:F ratio 79:18), who received a combination of PEG-IFN (α-2a or α-2b) and RBV were retrospectively analyzed (2006-2008) for the early virological response (EVR) at 12 weeks, end of treatment response (ETR), and SVR at 6 months. RESULTS Eighty-four (86.6%) patients achieved EVR and 81 (83.5%) achieved ETR, while SVR was achieved in 65 (67.0%) patients. Of the 84 patients who achieved EVR, 77 (91.7%) achieved ETR and 61 (72.6%) achieved SVR at 6 months. Age and body mass index (BMI) were found to be important predictors (*P<0.05) of SVR. CHC patients with a history of alcohol intake showed decreased SVR (52%) (*P=0.035) as compared to nonalcoholics (80%). Cirrhotic versus noncirrhotic patients showed no difference in SVR (54.5% vs. 70.7%) (P=0.157). Serum alanine aminotransferase (ALT) (P=0.169) and hepatitis C virus (HCV) RNA levels (P=0.42) also did not have an influence on the SVR. CONCLUSION Combination therapy with PEG-IFN-α and RBV demonstrated good tolerability in CHC genotype 3 infection. Age, BMI, and alcohol consumption play an important role in determining treatment outcome.
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Affiliation(s)
- S K Tohra
- Department of Hepatology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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Drumright LN, Hagan H, Thomas DL, Latka MH, Golub ET, Garfein RS, Clapp JD, Campbell JV, Bonner S, Kapadia F, Thiel TK, Strathdee SA. Predictors and effects of alcohol use on liver function among young HCV-infected injection drug users in a behavioral intervention. J Hepatol 2011; 55:45-52. [PMID: 21145862 PMCID: PMC3094600 DOI: 10.1016/j.jhep.2010.10.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 10/06/2010] [Accepted: 10/07/2010] [Indexed: 01/16/2023]
Abstract
BACKGROUND & AIMS Hepatitis C virus (HCV) screening can provide opportunities to reduce disease progression through counseling against alcohol use, but empirical data on this issue are sparse. We determined the efficacy of a behavioral intervention in reducing alcohol use among young, HCV-infected injection drug users (IDUs) (n=355) and assessed whether changes in liver enzymes were associated with changes in alcohol consumption. METHODS Both the intervention and attention-control groups were counseled to avoid alcohol use, but the intervention group received enhanced counseling. Logistic regression, ANOVA, and continuous time Markov models were used to identify factors associated with alcohol use, changes in mean ALT and AST levels, and change in alcohol use post-intervention. RESULTS Six months post-intervention, alcohol abstinence increased 22.7% in both groups, with no difference by intervention arm. Transition from alcohol use to abstinence was associated with a decrease in liver enzymes, with a marginally greater decrease in the intervention group (p=0.05 for ALT; p=0.06 for AST). In multivariate Markov models, those who used marijuana transitioned from alcohol abstinence to consumption more rapidly than non-users (RR=3.11); those who were homeless transitioned more slowly to alcohol abstinence (RR=0.47); and those who had ever received a clinical diagnosis of liver disease transitioned more rapidly to abstinence (RR=1.88). CONCLUSIONS Although, behavioral counseling to reduce alcohol consumption among HCV-infected IDUs had a modest effect, reductions in alcohol consumption were associated with marked improvements in liver function. Interventions to reduce alcohol use among HCV-infected IDUs may benefit from being integrated into clinical care and monitoring of HCV infection.
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Affiliation(s)
- Lydia N. Drumright
- At the time of work on study: University of California, San Diego, Department of Medicine, Division of Global Public Health, La Jolla, CA; Current affiliation: Centre for Infection Prevention and Management, Division of Infectious Diseases and Immunology, Department of Medicine, Imperial College London, London, United Kingdom
| | - Holly Hagan
- National Development and Research Institute, Center for Drug Use and HIV Research, New York, NY
| | | | - Mary H. Latka
- At the time of the study: Center for Urban Epidemiologic Studies, New York Academy of Medicine, New York, NY; Current affiliation: The Aurum Institute, Johannesburg, South Africa
| | | | - Richard S. Garfein
- University of California, San Diego, Department of Medicine, Division of Global Public Health, La Jolla, CA
| | - John D. Clapp
- Center for Alcohol and Drug Studies, School of Social Work, San Diego State University, San Diego, CA
| | - Jennifer V. Campbell
- At the time of the study: Seattle-King County Department of Public Health, HIV/AIDS Prevention Program, Seattle, WA
| | - Sebastian Bonner
- Center for Urban Epidemiologic Studies, New York Academy of Medicine
| | - Farzana Kapadia
- At the time of the study: Center for Urban Epidemiologic Studies, New York Academy of Medicine, New York, NY, Current affiliation: New York University, Community Public Health Program New York, NY
| | | | - Steffanie A. Strathdee
- University of California, San Diego, Department of Medicine, Division of Global Public Health, La Jolla, CA
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Mercer DF. Animal models for studying hepatitis C and alcohol effects on liver. World J Gastroenterol 2011; 17:2515-9. [PMID: 21633656 PMCID: PMC3103809 DOI: 10.3748/wjg.v17.i20.2515] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 03/08/2011] [Accepted: 03/15/2011] [Indexed: 02/06/2023] Open
Abstract
Chronic consumption of ethanol has a dramatic effect on the clinical outcome of patients with hepatitis C virus (HCV) infection, but the mechanism linking these two pathologies is unknown. Presently, in vitro systems are limited in their ability to study the interaction between a productive wild-type HCV infection and chronic ethanol exposure. Mouse models are potentially very useful in dissecting elements of the HCV-ethanol relationship. Experiments in mice that transgenically express HCV proteins are outlined, as are experiments for the generation of mice with chimeric human livers. The latter models appear to have the most promise for accurately modeling the effects of chronic ethanol intake in HCV-infected human livers.
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Abstract
Liver is known as an organ that is primarily affected by alcohol. Alcoholic liver disease (ALD) is the cause of an increased morbidity and mortality worldwide. Progression of ALD is driven by “second hits”. These second hits include the complex of nutritional, pharmacological, genetic and viral factors, which aggravate liver pathology. However, in addition to liver failure, ethanol causes damage to other organs and systems. These extrahepatic manifestations are regulated via the similar hepatitis mechanisms. In the Topic Highlight series, we provide an update of current knowledge in the field of ALD.
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