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Abu-Serie MM, Barakat A, Ramadan S, Habashy NH. Superior cuproptotic efficacy of diethyldithiocarbamate-Cu 4O 3 nanoparticles over diethyldithiocarbamate-Cu 2O nanoparticles in metastatic hepatocellular carcinoma. Front Pharmacol 2024; 15:1388038. [PMID: 39076585 PMCID: PMC11284037 DOI: 10.3389/fphar.2024.1388038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 06/18/2024] [Indexed: 07/31/2024] Open
Abstract
Metastatic hepatocellular carcinoma (HC) is a serious health concern. The stemness of cancer stem cells (CSCs) is a key driver for HC tumorigenesis, apoptotic resistance, and metastasis, and functional mitochondria are critical for its maintenance. Cuproptosis is Cu-dependent non-apoptotic pathway (mitochondrial dysfunction) via inactivating mitochondrial enzymes (pyruvate dehydrogenase "PDH" and succinate dehydrogenase "SDH"). To effectively treat metastatic HC, it is necessary to induce selective cuproptosis (for halting cancer stemness genes) with selective oxidative imbalance (for increasing cell susceptibility to cuproptosis and inducing non-CSCs death). Herein, two types of Cu oxide nanoparticles (Cu4O3 "C(I + II)" NPs and Cu2O "C(I)" NPs) were used in combination with diethyldithiocarbamate (DD, an aldehyde dehydrogenase "ALDH" inhibitor) for comparative anti-HC investigation. DC(I + II) NPs exhibited higher cytotoxicity, mitochondrial membrane potential, and anti-migration impact than DC(I) NPs in the treated human HC cells (HepG2 and/or Huh7). Moreover, DC(I + II) NPs were more effective than DC(I) NPs in the treatment of HC mouse groups. This was mediated via higher selective accumulation of DC(I + II) NPs in only tumor tissues and oxidant activity, causing stronger selective inhibition of mitochondrial enzymes (PDH, SDH, and ALDH2) than DC(I)NPs. This effect resulted in more suppression of tumor and metastasis markers as well as stemness gene expressions in DC(I + II) NPs-treated HC mice. In addition, both nanocomplexes normalized liver function and hematological parameters. The computational analysis found that DC(I + II) showed higher binding affinity to most of the tested enzymes. Accordingly, DC(I + II) NPs represent a highly effective therapeutic formulation compared to DC(I) NPs for metastatic HC.
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Affiliation(s)
- Marwa M. Abu-Serie
- Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Assem Barakat
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sherif Ramadan
- Chemistry Department, Michigan State University, East Lansing, MI, United States
- Department of Chemistry, Benha University, Benha, Egypt
| | - Noha Hassan Habashy
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
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Abu-Serie MM. Targeted ferroptotic potency of ferrous oxide nanoparticles-diethyldithiocarbamate nanocomplex on the metastatic liver cancer. Front Pharmacol 2023; 13:1089667. [PMID: 36686682 PMCID: PMC9847675 DOI: 10.3389/fphar.2022.1089667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/12/2022] [Indexed: 01/06/2023] Open
Abstract
Existing treatments are frequently ineffective in combating liver cancer (LC) due to its rapid growth, high metastatic potential, and chemoresistance. Thus, inducing ferroptosis, a new non-apoptotic regulated cell death-dependent massive iron overload-mediated lipid peroxidation, is an alternative effective approach for treating LC. The efficient trigger of ferroptosis requires blocking cellular antioxidant (anti-ferroptosis) response and selectivity to avoid harming other healthy tissues. In this study, green chemically synthesized ferrous oxide nanoparticles (F(II) NPs) were used for enhancing selective iron accumulation in tumor tissue, while diethyldithiocarbamate (DE) was for inhibiting the antioxidant system (glutathione and aldehyde dehydrogenase (ALDH) 2) which protects the tumor from damage-dependent lipid peroxides. Thus, F(II) NPs were used with DE as nanocomplex (DF(II) NPs) and its anti-LC activity compared to ferrous oxide DF(II). DF(II) NPs outperformed the typical complex of DF(II) in eradicating metastatic LC cells in HepG2 cells and a chemically induced metastatic LC animal model, as evidenced by flow cytometry, histological and immunohistochemical analyses, and α-fetoprotein depletion. The superior therapeutic potency-dependent ferroptotic activity of DF(II) NPs, attributed to their higher selective accumulation (∼77%) than DF(II) in tumor tissues (liver and lung), resulted in a strong elevation of cellular lipid peroxidation with extreme suppression of nuclear related factor 2 (Nrf2) transcriptional activity, glutathione (GSH), glutathione peroxidase 4, and ALDH2. Subsequently, a severe inhibition in the expression of oncogenes and metastatic cancer stem cell genes was recorded in DF(II) NPs-treated LC animal group. In contrast to DF(II), DF(II) NPs were able to normalize liver functions and did not show any variations in hematological and histological parameters in the blood and tissues of DF(II) NPs-treated normal mouse group. These findings validate the potency and safety of DF(II) nanocomplex as a promising nanodrug for combating metastatic LC.
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Alda-1 Prevents Pulmonary Epithelial Barrier Dysfunction following Severe Hemorrhagic Shock through Clearance of Reactive Aldehydes. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2476252. [PMID: 31467875 PMCID: PMC6699483 DOI: 10.1155/2019/2476252] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 07/09/2019] [Indexed: 01/11/2023]
Abstract
Severe hemorrhagic shock and resuscitation (HS/R) can lead to lung injury, resulting in respiratory insufficiency. We investigated whether treatment with Alda-1, an ALDH2 activator, decreased lung injury induced by severe HS/R in a rat model. Male Sprague-Dawley rats were randomized into three groups, hemorrhagic shock + placebo, hemorrhagic shock + Alda-1, and sham. All animals were heparinized, and then 50% of the total calculated blood volume was collected over 60 minutes. After 40 minutes of hemorrhagic shock, animals were reinfused with the shed blood over 40 minutes and then observed for an additional 2 hours. Concentrations of 4-HNE, TNF-α, IL-6, and ALDH2 activity were detected; lung injury and lung wet-to-dry weight ratios were assessed. Expression of occludin and ZO-1 proteins in lung tissues was also determined. At 2 hours after resuscitation, lung injury was significantly reduced and the wet-to-dry weight ratio was notably decreased in the Alda-1 group compared with placebo (P<0.05). Alda-1 treatment also significantly increased the activity of ALDH2 and decreased the levels of toxic 4-HNE (P<0.05). In the Alda-1 group, IL-6 and TNF-α were dramatically decreased compared with placebo-treated animals (P<0.05). Expression of occludin and ZO-1 proteins was significantly decreased in the placebo group compared with the Alda-1 group (P<0.05). Thus, in a rat model of severe HS/R, treatment with Alda-1 increased the activity of ALDH2, significantly accelerated the clearance of reactive aldehydes, and concomitantly alleviated lung injury through improvement of pulmonary epithelial barrier integrity resulting in decreased alveolar epithelial tissue permeability, lung edema, and diffuse infiltration of inflammatory cells.
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Kiyuna LA, Albuquerque RPE, Chen CH, Mochly-Rosen D, Ferreira JCB. Targeting mitochondrial dysfunction and oxidative stress in heart failure: Challenges and opportunities. Free Radic Biol Med 2018; 129:155-168. [PMID: 30227272 PMCID: PMC6309415 DOI: 10.1016/j.freeradbiomed.2018.09.019] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/28/2018] [Accepted: 09/14/2018] [Indexed: 02/06/2023]
Abstract
Mitochondrial dysfunction characterized by impaired bioenergetics, oxidative stress and aldehydic load is a hallmark of heart failure. Recently, different research groups have provided evidence that selective activation of mitochondrial detoxifying systems that counteract excessive accumulation of ROS, RNS and reactive aldehydes is sufficient to stop cardiac degeneration upon chronic stress, such as heart failure. Therefore, pharmacological and non-pharmacological approaches targeting mitochondria detoxification may play a critical role in the prevention or treatment of heart failure. In this review we discuss the most recent findings on the central role of mitochondrial dysfunction, oxidative stress and aldehydic load in heart failure, highlighting the most recent preclinical and clinical studies using mitochondria-targeted molecules and exercise training as effective tools against heart failure.
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Affiliation(s)
- Ligia Akemi Kiyuna
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | | | - Che-Hong Chen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, USA
| | - Daria Mochly-Rosen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, USA
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Imaging oxygen metabolism with hyperpolarized magnetic resonance: a novel approach for the examination of cardiac and renal function. Biosci Rep 2017; 37:BSR20160186. [PMID: 27899435 PMCID: PMC5270319 DOI: 10.1042/bsr20160186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 11/28/2016] [Accepted: 11/29/2016] [Indexed: 12/24/2022] Open
Abstract
Every tissue in the body critically depends on meeting its energetic demands with sufficient oxygen supply. Oxygen supply/demand imbalances underlie the diseases that inflict the greatest socio-economic burden globally. The purpose of this review is to examine how hyperpolarized contrast media, used in combination with MR data acquisition methods, may advance our ability to assess oxygen metabolism non-invasively and thus improve management of clinical disease. We first introduce the concept of hyperpolarization and how hyperpolarized contrast media have been practically implemented to achieve translational and clinical research. We will then analyse how incorporating hyperpolarized contrast media could enable realization of unmet technical needs in clinical practice. We will focus on imaging cardiac and renal oxygen metabolism, as both organs have unique physiological demands to satisfy their requirements for tissue oxygenation, their dysfunction plays a fundamental role in society’s most prevalent diseases, and each organ presents unique imaging challenges. It is our aim that this review attracts a multi-disciplinary audience and sparks collaborations that utilize an exciting, emergent technology to advance our ability to treat patients adversely affected by an oxygen supply/demand mismatch.
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Ueta CB, Gomes KS, Ribeiro MA, Mochly-Rosen D, Ferreira JCB. Disruption of mitochondrial quality control in peripheral artery disease: New therapeutic opportunities. Pharmacol Res 2017; 115:96-106. [PMID: 27876411 PMCID: PMC5205542 DOI: 10.1016/j.phrs.2016.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 11/10/2016] [Accepted: 11/12/2016] [Indexed: 01/25/2023]
Abstract
Peripheral artery disease (PAD) is a multifactorial disease initially triggered by reduced blood supply to the lower extremities due to atherosclerotic obstructions. It is considered a major public health problem worldwide, affecting over 200 million people. Management of PAD includes smoking cessation, exercise, statin therapy, antiplatelet therapy, antihypertensive therapy and surgical intervention. Although these pharmacological and non-pharmacological interventions usually increases blood flow to the ischemic limb, morbidity and mortality associated with PAD continue to increase. This scenario raises new fundamental questions regarding the contribution of intrinsic metabolic changes in the distal affected skeletal muscle to the progression of PAD. Recent evidence suggests that disruption of skeletal muscle mitochondrial quality control triggered by intermittent ischemia-reperfusion injury is associated with increased morbidity in individuals with PAD. The mitochondrial quality control machinery relies on surveillance systems that help maintaining mitochondrial homeostasis upon stress. In this review, we describe some of the most critical mechanisms responsible for the impaired skeletal muscle mitochondrial quality control in PAD. We also discuss recent findings on the central role of mitochondrial bioenergetics and quality control mechanisms including mitochondrial fusion-fission balance, turnover, oxidative stress and aldehyde metabolism in the pathophysiology of PAD, and highlight their potential as therapeutic targets.
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Affiliation(s)
- Cintia B Ueta
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Katia S Gomes
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Márcio A Ribeiro
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Daria Mochly-Rosen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, USA
| | - Julio C B Ferreira
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, Brazil.
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Campos JC, Bozi LHM, Bechara LRG, Lima VM, Ferreira JCB. Mitochondrial Quality Control in Cardiac Diseases. Front Physiol 2016; 7:479. [PMID: 27818636 PMCID: PMC5073139 DOI: 10.3389/fphys.2016.00479] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 10/05/2016] [Indexed: 01/08/2023] Open
Abstract
Disruption of mitochondrial homeostasis is a hallmark of cardiac diseases. Therefore, maintenance of mitochondrial integrity through different surveillance mechanisms is critical for cardiomyocyte survival. In this review, we discuss the most recent findings on the central role of mitochondrial quality control processes including regulation of mitochondrial redox balance, aldehyde metabolism, proteostasis, dynamics, and clearance in cardiac diseases, highlighting their potential as therapeutic targets.
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Affiliation(s)
- Juliane C Campos
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo Sao Paulo, Brazil
| | - Luiz H M Bozi
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo Sao Paulo, Brazil
| | - Luiz R G Bechara
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo Sao Paulo, Brazil
| | - Vanessa M Lima
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo Sao Paulo, Brazil
| | - Julio C B Ferreira
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo Sao Paulo, Brazil
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Josan S, Billingsley K, Orduna J, Park JM, Luong R, Yu L, Hurd R, Pfefferbaum A, Spielman D, Mayer D. Assessing inflammatory liver injury in an acute CCl4 model using dynamic 3D metabolic imaging of hyperpolarized [1-(13)C]pyruvate. NMR IN BIOMEDICINE 2015; 28:1671-7. [PMID: 26474216 PMCID: PMC4720258 DOI: 10.1002/nbm.3431] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 09/11/2015] [Accepted: 09/14/2015] [Indexed: 05/12/2023]
Abstract
To facilitate diagnosis and staging of liver disease, sensitive and non-invasive methods for the measurement of liver metabolism are needed. This study used hyperpolarized (13)C-pyruvate to assess metabolic parameters in a CCl4 model of liver damage in rats. Dynamic 3D (13)C chemical shift imaging data from a volume covering kidney and liver were acquired from 8 control and 10 CCl4-treated rats. At 12 time points at 5 s temporal resolution, we quantified the signal intensities and established time courses for pyruvate, alanine, and lactate. These measurements were compared with standard liver histology and an alanine transaminase (ALT) enzyme assay using liver tissue from the same animals. All CCl4-treated but none of the control animals showed histological liver damage and elevated ALT enzyme levels. In agreement with these results, metabolic imaging revealed an increased alanine/pyruvate ratio in liver of CCl4-treated rats, which is indicative of elevated ALT activity. Similarly, lactate/pyruvate ratios were higher in CCl4-treated compared with control animals, demonstrating the presence of inflammation. No significant differences in metabolite ratios were observed in kidney or vasculature. Thus this work shows that metabolic imaging using (13)C-pyruvate can be a successful tool to non-invasively assess liver damage in vivo.
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Affiliation(s)
- Sonal Josan
- SRI International, Neuroscience Program, Menlo Park, CA
- Stanford University, Department of Radiology, Stanford, CA
| | - Kelvin Billingsley
- Stanford University, Department of Radiology, Stanford, CA
- San Francisco State University, Department of Chemistry and Biochemistry, San Francisco, CA
| | - Juan Orduna
- SRI International, Neuroscience Program, Menlo Park, CA
| | - Jae Mo Park
- Stanford University, Department of Radiology, Stanford, CA
| | - Richard Luong
- Stanford University, Department of Comparative Medicine, Stanford, CA
| | - Liqing Yu
- University of Maryland, Department of Animal and Avian Sciences, College Park, MD
| | - Ralph Hurd
- GE Healthcare Applied Sciences Laboratory, Menlo Park, CA
| | - Adolf Pfefferbaum
- SRI International, Neuroscience Program, Menlo Park, CA
- Stanford University, Department of Psychiatry and Behavioral Sciences, Stanford, CA
| | | | - Dirk Mayer
- SRI International, Neuroscience Program, Menlo Park, CA
- Stanford University, Department of Radiology, Stanford, CA
- University of Maryland, Department of Diagnostic Radiology and Nuclear Medicine, Baltimore, MD
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Gordon JW, Niles DJ, Adamson EB, Johnson KM, Fain SB. Application of flow sensitive gradients for improved measures of metabolism using hyperpolarized (13) c MRI. Magn Reson Med 2015; 75:1242-8. [PMID: 25951611 DOI: 10.1002/mrm.25584] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 11/23/2014] [Accepted: 11/25/2014] [Indexed: 12/26/2022]
Abstract
PURPOSE To develop the use of bipolar gradients to suppress partial-volume and flow-related artifacts from macrovascular, hyperpolarized spins. THEORY AND METHODS Digital simulations were performed over a range of spatial resolutions and gradient strengths to determine the optimal bipolar gradient strength and duration to suppress flowing spins while minimizing signal loss from static tissue. In vivo experiments were performed to determine the efficacy of this technique to suppress vascular signal in the study of hyperpolarized [1-(13)C]pyruvate renal metabolism. RESULTS Digital simulations showed that in the absence of bipolar gradients, partial-volume artifacts from the vasculature were still present, causing underestimation of the apparent reaction rate of pyruvate to lactate (kP). The addition of a bipolar gradient with b = 32 s/mm(2) sufficiently suppressed the vascular signal without a substantial decrease in signal from static tissue. In vivo results corroborate digital simulations, with similar peak lactate signal to noise ratio (SNR) but substantially different kP in the presence of bipolar gradients. CONCLUSION The proposed approach suppresses signal from flowing spins while minimizing signal loss from static tissue, removing contaminating signal from the vasculature and increasing kinetic modeling accuracy without substantially sacrificing SNR or temporal resolution.
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Affiliation(s)
- Jeremy W Gordon
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - David J Niles
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Erin B Adamson
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kevin M Johnson
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sean B Fain
- Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA.,Radiology, University of Wisconsin-Madison, Madison, Madison, Wisconsin, USA.,Biomedical Engineering, University of Wisconsin-Madison, Madison, Madison, Wisconsin, USA
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Dzien P, Kettunen MI, Marco-Rius I, Serrao EM, Rodrigues TB, Larkin TJ, Timm KN, Brindle KM. (13) C magnetic resonance spectroscopic imaging of hyperpolarized [1-(13) C, U-(2) H5 ] ethanol oxidation can be used to assess aldehyde dehydrogenase activity in vivo. Magn Reson Med 2015; 73:1733-40. [PMID: 24800934 DOI: 10.1002/mrm.25286] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/19/2014] [Accepted: 04/16/2014] [Indexed: 12/28/2022]
Abstract
PURPOSE Aldehyde dehydrogenase (ALDH2) is an emerging drug target for the treatment of heart disease, cocaine and alcohol dependence, and conditions caused by genetic polymorphisms in ALDH2. Noninvasive measurement of ALDH2 activity in vivo could inform the development of these drugs and accelerate their translation to the clinic. METHODS [1-(13) C, U-(2) H5 ] ethanol was hyperpolarized using dynamic nuclear polarization, injected into mice and its oxidation in the liver monitored using (13) C MR spectroscopy and spectroscopic imaging. RESULTS Oxidation of [1-(13) C, U-(2) H5 ] ethanol to [1-(13) C] acetate was observed. Saturation of the acetaldehyde resonance, which was below the level of detection in vivo, demonstrated that acetate was produced via acetaldehyde. Irreversible inhibition of ALDH2 activity with disulfiram resulted in a proportional decrease in the amplitude of the acetate resonance. CONCLUSION (13) C magnetic resonance spectroscopy measurements of hyperpolarized [1-(13) C, U-(2) H5 ] ethanol oxidation allow real-time assessment of ALDH2 activity in liver in vivo.
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Affiliation(s)
- Piotr Dzien
- Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge, UK; Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge, UK
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Neuman MG, Cohen L, Zakhari S, Nanau RM, Mueller S, Schneider M, Parry C, Isip R, Seitz HK. Alcoholic liver disease: a synopsis of the Charles Lieber's Memorial Symposia 2009-2012. Alcohol Alcohol 2014; 49:373-80. [PMID: 24816574 DOI: 10.1093/alcalc/agu021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This paper is based upon the 'Charles Lieber Satellite Symposia' organized by Manuela G. Neuman at each of the 2009-2012 Research Society on Alcoholism (RSA) Annual Meetings. The presentations represent a broad spectrum dealing with alcoholic liver disease (ALD). In addition, a literature search (2008-2013) in the discussed area was performed in order to obtain updated data. The presentations are focused on genetic polymorphisms of ethanol metabolizing enzymes and the role of cytochrome P4502E1 (CYP2E1) in ALD. In addition, alcohol-mediated hepatocarcinogenesis, immune response to alcohol and fibrogenesis in alcoholic hepatitis as well as its co-morbidities with chronic viral hepatitis infections in the presence or absence of human deficiency virus are discussed. Finally, emphasis was led on alcohol and drug interactions as well as liver transplantation for end-stage ALD.
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Affiliation(s)
- Manuela G Neuman
- In Vitro Drug Safety and Biotechnology, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Lawrence Cohen
- Division of Gastroenterology, Sunnybrook Health Sciences Centre, Department of Medicine, Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Samir Zakhari
- Division of Metabolism and Health Effects, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Radu M Nanau
- In Vitro Drug Safety and Biotechnology, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Sebastian Mueller
- Centre of Alcohol Research, University of Heidelberg and Department of Medicine (Gastroenterology and Hepatology), Salem Medical Centre, Heidelberg, Germany
| | - Michelle Schneider
- Alcohol and Drug Abuse Research Unit, Medical Research Council, Stellenbosch University, Cape Town, South Africa
| | - Charles Parry
- Alcohol and Drug Abuse Research Unit, Medical Research Council, Stellenbosch University, Cape Town, South Africa Department of Psychiatry, Stellenbosch University, Cape Town, South Africa
| | - Romina Isip
- In Vitro Drug Safety and Biotechnology, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Helmut K Seitz
- Centre of Alcohol Research, University of Heidelberg and Department of Medicine (Gastroenterology and Hepatology), Salem Medical Centre, Heidelberg, Germany
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