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Pomella S, Melaiu O, Cifaldi L, Bei R, Gargari M, Campanella V, Barillari G. Biomarkers Identification in the Microenvironment of Oral Squamous Cell Carcinoma: A Systematic Review of Proteomic Studies. Int J Mol Sci 2024; 25:8929. [PMID: 39201614 PMCID: PMC11354375 DOI: 10.3390/ijms25168929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/30/2024] [Accepted: 08/05/2024] [Indexed: 09/02/2024] Open
Abstract
An important determinant for oral squamous cell carcinoma (OSCC) onset and outcome is the composition of the tumor microenvironment (TME). Thus, the study of the interactions occurring among cancer cells, immune cells, and cancer-associated fibroblasts within the TME could facilitate the understanding of the mechanisms underlying OSCC development and progression, as well as of its sensitivity or resistance to the therapy. In this context, it must be highlighted that the characterization of TME proteins is enabled by proteomic methodologies, particularly mass spectrometry (MS). Aiming to identify TME protein markers employable for diagnosing and prognosticating OSCC, we have retrieved a total of 119 articles spanning 2001 to 2023, of which 17 have passed the selection process, satisfying all its criteria. We have found a total of 570 proteins detected by MS-based proteomics in the TME of OSCC; among them, 542 are identified by a single study, while 28 are cited by two or more studies. These 28 proteins participate in extracellular matrix remodeling and/or energy metabolism. Here, we propose them as markers that could be used to characterize the TME of OSCC for diagnostic/prognostic purposes. Noteworthy, most of the 28 individuated proteins share one feature: being modulated by the hypoxia that is present in the proliferating OSCC mass.
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Affiliation(s)
| | | | | | | | | | | | - Giovanni Barillari
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Montpellier, 00133 Rome, Italy; (S.P.); (O.M.); (L.C.); (R.B.); (M.G.); (V.C.)
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2
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Abirami S, Adole PS, Vinod KV. Association of Tenascin-C Gene Polymorphisms with Risk of Acute Coronary Syndrome in South Indian Population: A Case-Control Genetic Association Study. Genet Test Mol Biomarkers 2024; 28:114-122. [PMID: 38471098 PMCID: PMC10979666 DOI: 10.1089/gtmb.2023.0482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024] Open
Abstract
Background: The extracellular matrix (ECM) glycoprotein changes are associated with the pathogenesis and complications of atherosclerosis, leading to acute coronary syndrome (ACS). Tenascin-C (TNC), an ECM protein, has been implemented in the pathogenesis, diagnosis, and prognosis of patients with cardiovascular disease. Aim: The study aimed to compare the genetic variants of the TNC gene (rs13321, rs2104772, and rs12347433) between South Indians with ACS and healthy participants. Materials and Methods: This case-control study recruited 150 ACS patients as cases and 150 healthy participants as controls. TNC genotyping was performed using TaqMan 5'-exonuclease allele discrimination assay. Serum TNC levels were measured by enzyme-linked immunosorbent assay. Results: Serum TNC levels were significantly higher in cases compared with controls. No significant difference was observed in allele and genotype frequencies of rs13321, rs2104772, and rs12347433 between cases and controls, which was confirmed by dominant, recessive, codominant, and homozygotic genetic models. The patients with heterozygous genotypes of rs13321, rs2104772, and rs12347433 had significantly lower serum TNC levels than patients with respective homozygous genotypes. Haplotype analyses revealed that the C-T-A haplotype in the block of rs13321-rs12347433-rs2104772 was associated with lower ACS risk (OR = 0.33, 95% CI: 0.15 - 0.75; p = 0.005). Also, the C-T-T and G-T-A haplotypes of the TNC gene were associated with higher and lower serum TNC levels, respectively. Conclusion: Our study demonstrated no genetic association between single nucleotide polymorphisms of the TNC gene and ACS risk; however, the C-T-A haplotype of the TNC gene might be associated with reduced ACS risk in South Indians.
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Affiliation(s)
- Sankar Abirami
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - Prashant Shankarrao Adole
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
| | - Kolar Vishwanath Vinod
- Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India
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Edavettal JM, Harris NR, Cohen SE, Paloczi J, Chandrasekar B, Gardner JD. Abstinence Restores Cardiac Function in Mice with Established Alcohol-Induced Cardiomyopathy. Cells 2023; 12:2783. [PMID: 38132102 PMCID: PMC10742080 DOI: 10.3390/cells12242783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/30/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Alcohol-induced cardiomyopathy (ACM) has a poor prognosis with up to a 50% chance of death within four years of diagnosis. There are limited studies investigating the potential of abstinence for promoting repair after alcohol-induced cardiac damage, particularly in a controlled preclinical study design. Here, we developed an exposure protocol that led to significant decreases in cardiac function in C57BL6/J mice within 30 days; dP/dt max decreased in the mice fed alcohol for 30 days (8054 ± 664.5 mmHg/s compared to control mice: 11,188 ± 724.2 mmHg/s, p < 0.01), and the dP/dt min decreased, as well (-7711 ± 561 mmHg/s compared to control mice: -10,147 ± 448.2 mmHg/s, p < 0.01). Quantitative PCR was used to investigate inflammatory and fibrotic biomarkers, while histology was used to depict overt changes in cardiac fibrosis. We observed a complete recovery of function after abstinence (dP/dt max increased from 8054 ± 664 mmHg/s at 30 days to 11,967 ± 449 mmHg/s after abstinence, p < 0.01); further, both inflammatory and fibrotic biomarkers decreased after abstinence. These results lay the groundwork for future investigation of the molecular mechanisms underlying recovery from alcohol-induced damage in the heart.
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Affiliation(s)
- Joshua M. Edavettal
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Nicholas R. Harris
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Sarah E. Cohen
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Janos Paloczi
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Bysani Chandrasekar
- Department of Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA;
- Department of Medical Pharmacology and Physiology, Dalton Cardiovascular Research Center, and Harry S. Truman Memorial Veterans Hospital, Columbia, MO 65212, USA
| | - Jason D. Gardner
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
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Simon L, Bourgeois BL, Molina PE. Alcohol and Skeletal Muscle in Health and Disease. Alcohol Res 2023; 43:04. [PMID: 37937295 PMCID: PMC10627576 DOI: 10.35946/arcr.v43.1.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023] Open
Abstract
PURPOSE Alcohol-related myopathy is one of the earliest alcohol-associated pathological tissue changes that is progressively exacerbated by cumulative long-term alcohol misuse. Acute and chronic alcohol use leads to changes in skeletal muscle mass and function. As discussed in this evidence-based review, alcohol-mediated mechanisms are multifactorial with effects on anabolic and catabolic signaling, mitochondrial bioenergetics, extracellular matrix remodeling, and epigenomic alterations. However, systematic studies are limited, especially regarding the acute effects of alcohol on skeletal muscle. SEARCH METHODS This review focuses on peer-reviewed manuscripts published between January 2012 and November 2022 using the search terms "alcohol" or "ethanol" and "skeletal muscle" in MEDLINE, PubMed, and Web of Science using EndNote reference management software. SEARCH RESULTS Eligible manuscripts included full-length research papers that discussed acute and chronic effects of alcohol on skeletal muscle mass and function in both clinical and preclinical studies. The review also includes alcohol-mediated skeletal muscle effects in the context of comorbidities. The three databases together yielded 708 manuscripts. Of these, the authors excluded from this review 548 papers that did not have "alcohol" or "muscle" in the title and 64 papers that were duplicates or did not discuss skeletal muscle. Thus, of all the manuscripts considered for this review, 96 are included and 612 are excluded. Additionally, relevant papers published earlier than 2012 are included to provide context to the review. DISCUSSION AND CONCLUSIONS Both acute and chronic alcohol use decrease protein synthesis and increase protein degradation. Alcohol also impairs mitochondrial function and extracellular matrix remodeling. However, there is a gap in the literature on the known alcohol-mediated mechanisms, including senescence, role of immune activation, and interorgan communication, on the development of alcohol-related myopathy. With increased life expectancy, changing alcohol use patterns, and increasing frequency of alcohol use among females, current observational studies are needed on the prevalence of alcohol-related myopathy. Additionally, the compounding effects of acute and chronic alcohol use on skeletal muscle with aging or exercise, in response to injury or disuse, and in the context of comorbidities including diabetes and human immunodeficiency virus (HIV), call for further investigation. Though evidence suggests that abstinence or reducing alcohol use can improve muscle mass and function, they are not restored to normal levels. Hence, understanding the pathophysiological mechanisms can help in the design of therapeutic strategies to improve skeletal muscle health.
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Affiliation(s)
- Liz Simon
- Department of Physiology and Comprehensive Alcohol-HIV/AIDS Research Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Brianna L Bourgeois
- Department of Physiology and Comprehensive Alcohol-HIV/AIDS Research Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Patricia E Molina
- Department of Physiology and Comprehensive Alcohol-HIV/AIDS Research Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana
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Ganjayi MS, Brown AM, Baumann CW. Longitudinal assessment of strength and body composition in a mouse model of chronic alcohol-related myopathy. ALCOHOL, CLINICAL & EXPERIMENTAL RESEARCH 2023; 47:1653-1664. [PMID: 37431705 DOI: 10.1111/acer.15149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/12/2023]
Abstract
BACKGROUND Excessive, chronic alcohol consumption can result in muscle atrophy and weakness (i.e., alcoholic myopathy) that impairs the quality of life. However, the precise mechanisms responsible for ethanol's detrimental impact on skeletal muscle have not been fully elucidated, in part due because the time course of disease development and progression are not well established. Therefore, we examined muscle strength and body composition longitudinally using an established preclinical mouse model of chronic alcoholic myopathy. METHODS To establish a time course of chronic alcoholic myopathy, we fed High Drinking in the Dark (HDID) female mice (n = 7) 20% ethanol for ~32 weeks (following a 2-week ethanol ramping period). We assessed in vivo isometric contractility of the left ankle dorsiflexor and lean mass via NMR every 4 weeks. Outcomes were compared with age-matched control HDID mice that did not consume ethanol (n = 8). RESULTS At study completion, mice who consumed ethanol were 12% weaker than control mice (p = 0.015). Compared to baseline, consuming ethanol resulted in an acute transient reduction in dorsiflexion torque at Week 4 (p = 0.032) that was followed by a second, more sustained reduction at Week 20 (p < 0.001). Changes in lean mass paralleled those of dorsiflexor torque, with ~40% of the variance in dorsiflexor torque being explained by the variance in lean mass of the ethanol group (p < 0.001). Dorsiflexor torque normalized to lean mass (mN·m/g lean mass) did not differ between the ethanol and control groups from Weeks 4 to 32 (p ≥ 0.498). CONCLUSIONS These results indicate that reductions in muscle mass and strength due to chronic, excessive ethanol intake are dynamic, not necessarily linear, processes. Moreover, the findings confirm that ethanol-induced weakness is primarily driven by muscle atrophy (i.e., loss of muscle quantity). Future studies should consider how chronic alcoholic myopathy develops and progresses rather than identifying changes after it has been diagnosed.
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Affiliation(s)
- Muni Swamy Ganjayi
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, Ohio, USA
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
| | - Austin M Brown
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, Ohio, USA
- Honors Tutorial College, Ohio University, Athens, Ohio, USA
| | - Cory W Baumann
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, Ohio, USA
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
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Cáceres-Ayala C, Mira RG, Acuña MJ, Brandan E, Cerpa W, Rebolledo DL. Episodic Binge-like Ethanol Reduces Skeletal Muscle Strength Associated with Atrophy, Fibrosis, and Inflammation in Young Rats. Int J Mol Sci 2023; 24:ijms24021655. [PMID: 36675170 PMCID: PMC9861047 DOI: 10.3390/ijms24021655] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 01/18/2023] Open
Abstract
Binge Drinking (BD) corresponds to episodes of ingestion of large amounts of ethanol in a short time, typically ≤2 h. BD occurs across all populations, but young and sports-related people are especially vulnerable. However, the short- and long-term effects of episodic BD on skeletal muscle function have been poorly explored. Young rats were randomized into two groups: control and episodic Binge-Like ethanol protocol (BEP) (ethanol 3 g/kg IP, 4 episodes of 2-days ON-2-days OFF paradigm). Muscle function was evaluated two weeks after the last BEP episode. We found that rats exposed to BEP presented decreased muscle strength and increased fatigability, compared with control animals. Furthermore, we observed that skeletal muscle from rats exposed to BEP presented muscle atrophy, evidenced by reduced fiber size and increased expression of atrophic genes. We also observed that BEP induced fibrotic and inflammation markers, accompanied by mislocalization of nNOSµ and high levels of protein nitration. Our findings suggest that episodic binge-like ethanol exposure alters contractile capacity and increases fatigue by mechanisms involving atrophy, fibrosis, and inflammation, which remain for at least two weeks after ethanol clearance. These pathological features are common to several neuromuscular diseases and might affect muscle performance and health in the long term.
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Affiliation(s)
- Constanza Cáceres-Ayala
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas 6213515, Chile
- Laboratorio de Función y Patología Neuronal, Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Rodrigo G. Mira
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas 6213515, Chile
- Laboratorio de Función y Patología Neuronal, Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - María José Acuña
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O’Higgins, Santiago 8370854, Chile
- Centro Científico y Tecnológico de Excelencia Ciencia & Vida, Santiago 7780272, Chile
| | - Enrique Brandan
- Centro Científico y Tecnológico de Excelencia Ciencia & Vida, Santiago 7780272, Chile
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago 7510157, Chile
- Centro de Envejecimiento y Regeneración (CARE), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Waldo Cerpa
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas 6213515, Chile
- Laboratorio de Función y Patología Neuronal, Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
- Centro de Envejecimiento y Regeneración (CARE), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
- Correspondence: (W.C.); (D.L.R.)
| | - Daniela L. Rebolledo
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas 6213515, Chile
- Centro de Envejecimiento y Regeneración (CARE), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
- Correspondence: (W.C.); (D.L.R.)
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Reed CH, Buhr TJ, Tystahl AC, Bauer EE, Clark PJ, Valentine RJ. The effects of voluntary binge-patterned ethanol ingestion and daily wheel running on signaling of muscle protein synthesis and degradation in female mice. Alcohol 2022; 104:45-52. [PMID: 35926812 DOI: 10.1016/j.alcohol.2022.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/17/2022] [Accepted: 06/22/2022] [Indexed: 01/26/2023]
Abstract
Excessive ethanol ingestion can reduce skeletal muscle protein synthesis (MPS) through the disruption of signaling along the Akt-mTOR pathway and increase muscle protein degradation (MPD) through the Ubiquitin Proteasome Pathway (UPP) and autophagy. Identification of interventions that curb the disrupting effects of alcohol misuse on MPS and MPD are of central importance for the prevention of chronic health complications that arise from muscle loss. Physical activity is one potential strategy to combat the deleterious effects of alcohol on skeletal muscle. Therefore, the purpose of this study was to investigate the interaction between daily wheel running and binge-patterned ethanol consumption, through episodes of voluntary binge-patterned ethanol drinking, on signaling factors along the Akt-mTOR, Ubiquitin-Proteasome, and autophagy pathways. Adult female C57BL/6J mice received daily access to cages with or without running wheels for 2.5 h/day for five weeks. During the final five days of the study, mice received 2-4 h of daily access to sipper tubes containing water (n = 14 sedentary; n = 15 running) or 20% ethanol (n = 14 sedentary; n = 16 running) 30 min after running wheel access, using the "Drinking in the Dark" (DID) model of binge-patterned ethanol consumption. Immediately after the final episode of DID, gastrocnemius muscle was extracted. Western blotting was performed to measure proteins along Akt-mTOR, Ubiquitin-Proteasome, and autophagy pathways, and PCR was used to assess mRNA expression of atrogenes. Ethanol access increased expression of MAFbx by 82% (p = 0.048), but did not robustly influence Akt-mTOR or UPP signaling. Daily wheel access did not prevent alcohol-induced MAFbx expression; however, ethanol access decreased the phosphorylation of p70S6K by 45% in running mice (p = 0.020). These results suggest that physical activity may be insufficient to prevent alcohol-induced changes to signaling factors along pathways involved in muscle loss. Instead, binge-patterned ethanol ingestion may impair the benefits of physical activity on factors involved in MPS.
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Affiliation(s)
- Carter H Reed
- Department of Kinesiology, Forker Building, 534 Wallace Road, Iowa State University, Ames, IA, 50011, United States; Interdepartmental Graduate Program of Nutritional Sciences, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States
| | - Trevor J Buhr
- Neuroscience Program, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States; Department of Food Science and Human Nutrition, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States
| | - Anna C Tystahl
- Department of Kinesiology, Forker Building, 534 Wallace Road, Iowa State University, Ames, IA, 50011, United States
| | - Ella E Bauer
- Interdepartmental Graduate Program of Nutritional Sciences, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States; Neuroscience Program, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States; Department of Food Science and Human Nutrition, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States
| | - Peter J Clark
- Interdepartmental Graduate Program of Nutritional Sciences, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States; Neuroscience Program, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States; Department of Food Science and Human Nutrition, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States.
| | - Rudy J Valentine
- Department of Kinesiology, Forker Building, 534 Wallace Road, Iowa State University, Ames, IA, 50011, United States; Interdepartmental Graduate Program of Nutritional Sciences, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States; Neuroscience Program, MacKay Hall, 2302 Osborn Drive, Iowa State University, Ames, IA, 50011, United States.
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Moser SE, Brown AM, Clark BC, Arnold WD, Baumann CW. Neuromuscular mechanisms of weakness in a mouse model of chronic alcoholic myopathy. Alcohol Clin Exp Res 2022; 46:1636-1647. [PMID: 35869821 PMCID: PMC9804636 DOI: 10.1111/acer.14907] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Weakness is a common clinical symptom reported in individuals with chronic alcohol use disorder. However, it remains unclear whether low strength in these individuals is directly related to excessive ethanol intake, other deleterious factors (lifestyle, environment, genetics, etc.), or a combination of both. Therefore, we examined whether (and how) ethanol reduces the muscle's force-producing capacity using a controlled in vivo preclinical mouse model of excessive ethanol intake. METHODS To establish whether chronic ethanol consumption causes weakness, C57BL/6 female mice consumed 20% ethanol for 40 weeks (following a 2-week ethanol ramping period), and various measures of muscular force were quantified. Functional measures included all-limb grip strength and in vivo contractility of the left ankle dorsiflexors and plantarflexors. Once confirmed that mice consuming ethanol were weaker than age-matched controls, we sought to determine the potential neuromuscular mechanisms of muscle dysfunction by assessing neuromuscular excitation, muscle quantity, and muscle quality. RESULTS Mice consuming chronic ethanol were 13 to 16% weaker (p ≤ 0.016) than controls (i.e., mice consuming 100% water) with the negative impact of ethanol on voluntary grip strength (ƞ2 = 0.603) being slightly larger than that of electrically stimulated muscle contractility (ƞ2 = 0.482). Relative to controls, lean mass and muscle wet masses were 9 to 16% lower in ethanol-consuming mice (p ≤ 0.048, ƞ2 ≥ 0.268). No significant changes were observed between groups for indices of neuromuscular excitation at the level of the motor unit, neuromuscular junction, or plasmalemma (p ≥ 0.259, ƞ2 ≤ 0.097), nor was muscle quality altered after 40 weeks of 20% ethanol consumption (p ≥ 0.695, ƞ2 ≤ 0.012). CONCLUSIONS Together, these findings establish that chronic ethanol consumption in mice induces a substantial weakness in vivo that we interpret to be primarily due to muscle atrophy (i.e., reduced muscle quantity) and possibly, to a lesser degree, loss of central neural drive.
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Affiliation(s)
- Samantha E. Moser
- Honors Tutorial CollegeOhio UniversityAthensOhioUSA,Ohio Musculoskeletal and Neurological Institute (OMNI)Ohio UniversityAthensOhioUSA
| | - Austin M. Brown
- Honors Tutorial CollegeOhio UniversityAthensOhioUSA,Ohio Musculoskeletal and Neurological Institute (OMNI)Ohio UniversityAthensOhioUSA
| | - Brian C. Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI)Ohio UniversityAthensOhioUSA,Department of Biomedical SciencesOhio UniversityAthensOhioUSA
| | - W. David Arnold
- Department of NeurologyThe Ohio State University Wexner Medical CenterColumbusOhioUSA,Department of Physical Medicine and RehabilitationThe Ohio State University Wexner Medical CenterColumbusOhioUSA,Department of NeuroscienceThe Ohio State University Wexner Medical CenterColumbusOhioUSA,Department of Physiology and Cell BiologyThe Ohio State University Wexner Medical CenterColumbusOhioUSA
| | - Cory W. Baumann
- Ohio Musculoskeletal and Neurological Institute (OMNI)Ohio UniversityAthensOhioUSA,Department of Biomedical SciencesOhio UniversityAthensOhioUSA
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Alcohol Induces Zebrafish Skeletal Muscle Atrophy through HMGB1/TLR4/NF-κB Signaling. LIFE (BASEL, SWITZERLAND) 2022; 12:life12081211. [PMID: 36013390 PMCID: PMC9410481 DOI: 10.3390/life12081211] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 11/17/2022]
Abstract
Excessive alcohol consumption can cause alcoholic myopathy, but the molecular mechanism is still unclear. In this study, zebrafish were exposed to 0.5% alcohol for eight weeks to investigate the effect of alcohol on skeletal muscle and its molecular mechanism. The results showed that the body length, body weight, cross-sectional area of the skeletal muscle fibers, Ucrit, and MO2max of the zebrafish were significantly decreased after alcohol exposure. The expression of markers of skeletal muscle atrophy and autophagy was increased, and the expression of P62 was significantly reduced. The content of ROS, the mRNA expression of sod1 and sod2, and the protein expression of Nox2 were significantly increased. In addition, we found that the inflammatory factors Il1β and Tnfα were significantly enriched in skeletal muscle, and the expression of the HMGB1/TLR4/NF-κB signaling axis was also significantly increased. In summary, in this study, we established a zebrafish model of alcohol-induced skeletal muscle atrophy and further elucidated its pathogenesis.
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10
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Abraham S, Lindo C, Peoples J, Cox A, Lytle E, Nguyen V, Mehta M, Alvarez JD, Yooseph S, Pacher P, Ebert SN. Maternal binge alcohol consumption leads to distinctive acute perturbations in embryonic cardiac gene expression profiles. Alcohol Clin Exp Res 2022; 46:1433-1448. [PMID: 35692084 DOI: 10.1111/acer.14880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 05/09/2022] [Accepted: 06/01/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Excessive alcohol consumption during pregnancy is associated with high risk of congenital heart defects, but it is unclear how alcohol specifically affects heart development during the acute aftermath of a maternal binge drinking episode. We hypothesize that administration of a single maternal binge dose of alcohol to pregnant mice at embryonic day 9.5 (E9.5) causes perturbations in the expression patterns of specific genes in the developing heart in the acute period (1-3 days) following the binge episode. To test this hypothesis and identify strong candidate ethanol-sensitive target genes of interest, we adapted a mouse binge alcohol model that is associated with a high incidence of congenital heart defects as described below. METHODS/RESULTS Pregnant mice were administered a single dose of alcohol (2.5 g/kg in saline) or control (saline alone) via oral gavage. To evaluate the impact of maternal binge alcohol on cardiac gene expression profiles, we isolated embryonic hearts from both groups (n = 5/group) at 24, 48, and 72 h post-gavage for transcriptomic analyses. RNA was extracted and evaluated using quantitative RNA-sequencing (RNA-Seq) methods. To identify a cohort of binge-altered cardiac genes, we set the threshold for change at >2.0-fold difference with adjusted p < 0.05 versus control. RNA-Seq analysis of cardiac gene expression revealed that of the 17 genes that were altered within the first 48 h post-binge, with the largest category consisting of transcription factors (Alx1, Alx4, HoxB7, HoxD8, and Runx2), followed by signaling molecules (Adamts18, Dkk2, Rtl1, and Wnt7a). Furthermore, multiple comparative and pathway analyses suggested that several of the candidate genes identified through differential RNA-Seq analysis may interact through certain common pathways. To investigate this further, we performed gene-specific qPCR analyses for three representative candidate targets: Runx2, Wnt7a, and Mlxipl. Notably, only Wnt7a showed significantly (p < 0.05) decreased expression in response to maternal binge alcohol in the qPCR assays. CONCLUSIONS These findings identify Wnt7a and a short list of potential other candidate genes and pathways for further study, which could provide mechanistic insights into how maternal binge alcohol consumption produces congenital cardiac malformations.
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Affiliation(s)
- Shani Abraham
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Chad Lindo
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Jessica Peoples
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Amanda Cox
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Erika Lytle
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Vu Nguyen
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Meeti Mehta
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Jose D Alvarez
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Shibu Yooseph
- Department of Computer Science, Genomics and Bioinformatics Cluster, College of Engineering and Computer Science, University of Central Florida, Orlando, Florida, USA
| | - Pal Pacher
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute of Alcohol and Alcohol Abuse (NIAAA), The National Institutes of Health (NIH), Rockville, Maryland, USA
| | - Steven N Ebert
- Division of Metabolic and Cardiovascular Science, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
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11
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Caceres-Ayala C, Pautassi RM, Acuña MJ, Cerpa W, Rebolledo DL. The functional and molecular effects of problematic alcohol consumption on skeletal muscle: a focus on athletic performance. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2022; 48:133-147. [PMID: 35389308 DOI: 10.1080/00952990.2022.2041025] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background: Chronic alcohol misuse is associated with alcoholic myopathy, characterized by skeletal muscle weakness and atrophy. Moreover, there is evidence that sports-related people seem to exhibit a greater prevalence of problematic alcohol consumption, especially binge drinking (BD), which might not cause alcoholic myopathy but can negatively impact muscle function and amateur and professional athletic performance.Objective: To review the literature concerning the effects of alcohol consumption on skeletal muscle function and structure that can affect muscle performance.Methodology: We examined the currently available literature (PubMed, Google Scholars) to develop a narrative review summarizing the knowledge about the effects of alcohol on skeletal muscle function and exercise performance, obtained from studies in human beings and animal models for problematic alcohol consumption.Results: Exercise- and sport-based studies indicate that alcohol consumption can negatively affect muscle recovery after vigorous exercise, especially in men, while women seem less affected. Clinical studies and pre-clinical laboratory research have led to the knowledge of some of the mechanisms involved in alcohol-related muscle dysfunction, including an imbalance between anabolic and catabolic pathways, reduced regeneration, increased inflammation and fibrosis, and deficiencies in energetic balance and mitochondrial function. These pathological features can appear not only under chronic alcohol misuse but also in other alcohol consumption patterns.Conclusions: Most laboratory-based studies use chronic or acute alcohol exposure, while episodic BD, the most common drinking pattern in amateur and professional athletes, is underrepresented. Nevertheless, alcohol consumption negatively affects skeletal muscle health through different mechanisms, which collectively might contribute to reduced sports performance.
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Affiliation(s)
- Constanza Caceres-Ayala
- Centro de Excelencia En Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile.,Laboratorio de Función y Patología Neuronal, Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ricardo M Pautassi
- Instituto de Investigación Médica M. Y M. Ferreyra, Inimec-Conicet, Universidad Nacional de Córdoba, Córdoba, Argentina.,Facultad de Psicología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María José Acuña
- Facultad de Salud, Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O Higgins, Santiago, Chile.,Facultad de Ciencias Biológicas, Centro de Envejecimiento y Regeneración (CARE), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Waldo Cerpa
- Centro de Excelencia En Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile.,Laboratorio de Función y Patología Neuronal, Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas Pontificia Universidad Católica de Chile, Santiago, Chile.,Facultad de Ciencias Biológicas, Centro de Envejecimiento y Regeneración (CARE), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Daniela L Rebolledo
- Centro de Excelencia En Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile.,Facultad de Ciencias Biológicas, Centro de Envejecimiento y Regeneración (CARE), Pontificia Universidad Católica de Chile, Santiago, Chile
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12
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Simon L, Edwards S, Molina PE. Pathophysiological Consequences of At-Risk Alcohol Use; Implications for Comorbidity Risk in Persons Living With Human Immunodeficiency Virus. Front Physiol 2022; 12:758230. [PMID: 35115952 PMCID: PMC8804300 DOI: 10.3389/fphys.2021.758230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/13/2021] [Indexed: 12/14/2022] Open
Abstract
At-risk alcohol use is a significant risk factor associated with multisystemic pathophysiological effects leading to multiorgan injury and contributing to 5.3% of all deaths worldwide. The alcohol-mediated cellular and molecular alterations are particularly salient in vulnerable populations, such as people living with HIV (PLWH), diminishing their physiological reserve, and accelerating the aging process. This review presents salient alcohol-associated mechanisms involved in exacerbation of cardiometabolic and neuropathological comorbidities and their implications in the context of HIV disease. The review integrates consideration of environmental factors, such as consumption of a Western diet and its interactions with alcohol-induced metabolic and neurocognitive dyshomeostasis. Major alcohol-mediated mechanisms that contribute to cardiometabolic comorbidity include impaired substrate utilization and storage, endothelial dysfunction, dysregulation of the renin-angiotensin-aldosterone system, and hypertension. Neuroinflammation and loss of neurotrophic support in vulnerable brain regions significantly contribute to alcohol-associated development of neurological deficits and alcohol use disorder risk. Collectively, evidence suggests that at-risk alcohol use exacerbates cardiometabolic and neurocognitive pathologies and accelerates biological aging leading to the development of geriatric comorbidities manifested as frailty in PLWH.
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13
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Cespiati A, Meroni M, Lombardi R, Oberti G, Dongiovanni P, Fracanzani AL. Impact of Sarcopenia and Myosteatosis in Non-Cirrhotic Stages of Liver Diseases: Similarities and Differences across Aetiologies and Possible Therapeutic Strategies. Biomedicines 2022; 10:biomedicines10010182. [PMID: 35052859 PMCID: PMC8773740 DOI: 10.3390/biomedicines10010182] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 12/15/2022] Open
Abstract
Sarcopenia is defined as a loss of muscle strength, mass and function and it is a predictor of mortality. Sarcopenia is not only a geriatric disease, but it is related to several chronic conditions, including liver diseases in both its early and advanced stages. Despite the increasing number of studies exploring the role of sarcopenia in the early stages of chronic liver disease (CLD), its prevalence and the relationship between these two clinical entities are still controversial. Myosteatosis is characterized by fat accumulation in the muscles and it is related to advanced liver disease, although its role in the early stages is still under researched. Therefore, in this narrative review, we firstly aimed to evaluate the prevalence and the pathogenetic mechanisms underlying sarcopenia and myosteatosis in the early stage of CLD across different aetiologies (mainly non-alcoholic fatty liver disease, alcohol-related liver disease and viral hepatitis). Secondly, due to the increasing prevalence of sarcopenia worldwide, we aimed to revise the current and the future therapeutic approaches for the management of sarcopenia in CLD.
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Affiliation(s)
- Annalisa Cespiati
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, Via F Sforza 35, 20122 Milan, Italy; (A.C.); (M.M.); (G.O.); (P.D.); (A.L.F.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Marica Meroni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, Via F Sforza 35, 20122 Milan, Italy; (A.C.); (M.M.); (G.O.); (P.D.); (A.L.F.)
| | - Rosa Lombardi
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, Via F Sforza 35, 20122 Milan, Italy; (A.C.); (M.M.); (G.O.); (P.D.); (A.L.F.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
- Correspondence: ; Tel.: +39-02-5503-4192; Fax: +39-02-5503-3509
| | - Giovanna Oberti
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, Via F Sforza 35, 20122 Milan, Italy; (A.C.); (M.M.); (G.O.); (P.D.); (A.L.F.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Paola Dongiovanni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, Via F Sforza 35, 20122 Milan, Italy; (A.C.); (M.M.); (G.O.); (P.D.); (A.L.F.)
| | - Anna Ludovica Fracanzani
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Pad. Granelli, Via F Sforza 35, 20122 Milan, Italy; (A.C.); (M.M.); (G.O.); (P.D.); (A.L.F.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
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14
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Zu W, Jiang B, Liu H. Establishment of a long-term hypertrophic scar model by injection of anhydrous alcohol: A rabbit model. Int J Exp Pathol 2021; 102:105-112. [PMID: 33710702 DOI: 10.1111/iep.12389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 12/24/2020] [Accepted: 01/04/2021] [Indexed: 12/16/2022] Open
Abstract
The processes of hypertrophic scar formation are extremely complex, and current animal models have limitations in terms of the complete characterization of lesions. An ideal animal model is indispensable for exploring the complex progression of scar formation to elucidate its pathophysiology and to perform therapeutic testing. This study aimed to establish a long-term, consistent and easily testable animal model by injecting anhydrous alcohol into the dorsal trunk dermis of rabbits. The rabbits were injected with different amounts of anhydrous alcohol. Anhydrous alcohol was infiltrated into the subcutaneous and superficial fascia. The optimal amount of anhydrous alcohol was determined by measuring the area and thickness of the scar. The typical model was established by determining the optimum dosage, and then we analysed the histological characteristics and fibrosis-associated protein expression. The dermal scar was generated by treating with 2 ml/kg anhydrous alcohol and displayed histopathologic features that characterize human hypertrophic scarring, including a parallel collagen fibre orientation, dermal and epidermal thickening, broad collagen deposition and the loss of dermal adnexal structures. The expression of fibrotic pan-markers was also enhanced. Moreover, the scar features and duration were compared between the anhydrous alcohol model and the rabbit ear model. Our results show that injecting anhydrous alcohol in the rabbit model thickened the dermal tissue, stimulated dermal fibroproliferation and resulted in hypertrophic scars with protein and histologic features similar to those seen in humans. Taken together, the findings from this study show that our model could be a feasible and useful tool for further research on the pathogenesis of hypertrophic scars.
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Affiliation(s)
- Wenxuan Zu
- Department of Anatomy, Bengbu Medical College, Bengbu, China
| | - Banghong Jiang
- Department of Plastic Surgery, 1st Affiliated Hospital of Jinan University, Guangzhou, China.,Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Hongwei Liu
- Department of Plastic Surgery, 1st Affiliated Hospital of Jinan University, Guangzhou, China
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15
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Silva AF, Sousa-Nunes F, Faria-Costa G, Rodrigues I, Guimarães JT, Leite-Moreira A, Henriques-Coelho T, Negrão R, Moreira-Gonçalves D. Effects of chronic moderate alcohol consumption on right ventricle and pulmonary remodelling. Exp Physiol 2021; 106:1359-1372. [PMID: 33605491 DOI: 10.1113/ep088788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 02/12/2021] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? Does the consumption of a moderate amount of alcohol differentially impact the heart ventricles and pulmonary vasculature. What is the main finding and its importance? Moderate alcohol consumption for a short period of time impaired pulmonary vascular cellular renewal through an apoptosis resistance pattern that ultimately affected the right ventricular function and structure. These findings support the need for a deeper understanding of effects of moderate alcohol consumption on the overall cardiovascular and pulmonary systems. ABSTRACT Over the past decades, observational studies have supported an association between moderate alcohol consumption and a lower risk of cardiovascular disease and mortality. However, recent and more robust meta-analyses have raised concerns around the robustness of the evidence for the cardioprotective effects of alcohol. Also, studies of the functional, structural and molecular changes promoted by alcohol have focused primarily on the left ventricle, ignoring the fact that the right ventricle could adapt differently. The aim of this study was to evaluate the bi-ventricular impact of daily moderate alcohol intake, during a 4-week period, in a rodent model. Male Wistar rats were allowed to drink water (Control) or a 5.2% ethanol mixture (ETOH) for 4 weeks. At the end of the protocol bi-ventricular haemodynamic recordings were performed and samples collected for further histological and molecular analysis. ETOH ingestion did not impact cardiac function. However, it caused right ventricle hypertrophy, paralleled by an activation of molecular pathways responsible for cell growth (ERK1/2, AKT), proteolysis (MURF-1) and oxidative stress (NOX4, SOD2). Furthermore, ETOH animals also presented remodelling of the pulmonary vasculature with an increase in pulmonary arteries' medial thickness, which was characterized by increased expression of apoptosis-related proteins expression (BCL-XL, BAX and caspases). Moderate alcohol consumption for a short period of time impaired the lungs and the right ventricle early, before any change could be detected on the left ventricle. Right ventricular changes might be secondary to alcohol-induced pulmonary vasculature remodelling.
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Affiliation(s)
- Ana Filipa Silva
- Unidade de Investigação Cardiovascular, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal
| | - Fábio Sousa-Nunes
- Unidade de Investigação Cardiovascular, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal
| | - Gabriel Faria-Costa
- Unidade de Investigação Cardiovascular, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal
| | - Ilda Rodrigues
- Departamento de Biomedicina - Unidade de Bioquímica, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal
| | - João Tiago Guimarães
- Departamento de Biomedicina - Unidade de Bioquímica, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,Departamento de Patologia Clínica, Centro Hospitalar Universitário São João, Al. Professor Hernâni Monteiro, Porto, Portugal.,Instituto de Saúde Pública da Universidade do Porto, Campo dos Mártires da Pátria, Porto, Portugal
| | - Adelino Leite-Moreira
- Unidade de Investigação Cardiovascular, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal
| | - Tiago Henriques-Coelho
- Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal
| | - Rita Negrão
- Departamento de Biomedicina - Unidade de Bioquímica, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,I3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen, Porto, Portugal
| | - Daniel Moreira-Gonçalves
- Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, Al. Professor Hernâni Monteiro, Porto, Portugal.,Centro de Atividade Física, Saúde e Lazer, Faculdade de Desporto da Universidade do Porto, R. Plácido Costa 91, Porto, Portugal
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16
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Katary M, Abdel-Rahman AA. Alcohol suppresses cardiovascular diurnal variations in male normotensive rats: Role of reduced PER2 expression and CYP2E1 hyperactivity in the heart. Alcohol 2020; 89:27-36. [PMID: 32777474 DOI: 10.1016/j.alcohol.2020.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/26/2020] [Accepted: 08/04/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS The molecular mechanism of the adverse effects of ethanol on diurnal cardiovascular regulation remains unknown. In separate studies, the cardiac circadian rhythm protein period-2 (PER2) confers cardioprotection and, in other organs, PER2 interaction with the ethanol-metabolizing enzyme CYP2E1 underlies, via heme oxygenase-1 (HO-1) upregulation, tissue injury/dysfunction. Here, we hypothesized that suppressed PER2 expression and elevated CYP2E1/HO-1 levels in the heart underlie the disrupted diurnal cardiovascular rhythm/function in alcohol-fed normotensive rats. METHODS In ethanol-fed (5%, w/v; 8 weeks) or isocaloric liquid diet-fed male rats, diurnal changes in blood pressure (BP), heart rate (HR), HR vagal variability index, root mean square of successive beat-to-beat differences in beat-interval duration (rMSSD), and cardiac function were measured by radiotelemetry and echocardiography followed by ex vivo molecular studies. RESULTS Radiotelemetry findings showed ethanol-evoked reductions in BP (during the dark cycle), rMSSD (during both cycles), and in diurnal differences in BP and rMSSD. Echocardiography findings revealed significant (p < 0.05) reductions in ejection fraction and fractional shortening (weeks 4-6) in the absence of cardiac remodeling (collagen content). Hearts of ethanol-fed rats exhibited higher (p < 0.05) CYP2E1 activity (50%) and HO-1 expression (63%), along with reduction (p < 0.05) in PER2 levels (29%), compared with the hearts of isocaloric diet-fed control rats. CONCLUSIONS Our novel findings implicate upregulations of CYP2E1/HO-1 and downregulation of the circadian rhythm cardioprotective protein PER2, in the heart, in the chronic deleterious diurnal cardiovascular effects of alcohol in male rats.
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Affiliation(s)
- Mohamed Katary
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
| | - Abdel A Abdel-Rahman
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, United States.
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17
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Rampoldi A, Singh M, Wu Q, Duan M, Jha R, Maxwell JT, Bradner JM, Zhang X, Saraf A, Miller GW, Gibson G, Brown LA, Xu C. Cardiac Toxicity From Ethanol Exposure in Human-Induced Pluripotent Stem Cell-Derived Cardiomyocytes. Toxicol Sci 2020; 169:280-292. [PMID: 31059573 DOI: 10.1093/toxsci/kfz038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Alcohol use prior to and during pregnancy remains a significant societal problem and can lead to developmental fetal abnormalities including compromised myocardia function and increased risk for heart disease later in life. Alcohol-induced cardiac toxicity has traditionally been studied in animal-based models. These models have limitations due to physiological differences from human cardiomyocytes (CMs) and are also not suitable for high-throughput screening. We hypothesized that human-induced pluripotent stem cell-derived CMs (hiPSC-CMs) could serve as a useful tool to study alcohol-induced cardiac defects and/or toxicity. In this study, hiPSC-CMs were treated with ethanol at doses corresponding to the clinically relevant levels of alcohol intoxication. hiPSC-CMs exposed to ethanol showed a dose-dependent increase in cellular damage and decrease in cell viability, corresponding to increased production of reactive oxygen species. Furthermore, ethanol exposure also generated dose-dependent increased irregular Ca2+ transients and contractility in hiPSC-CMs. RNA-seq analysis showed significant alteration in genes belonging to the potassium voltage-gated channel family or solute carrier family, partially explaining the irregular Ca2+ transients and contractility in ethanol-treated hiPSC-CMs. RNA-seq also showed significant upregulation in the expression of genes associated with collagen and extracellular matrix modeling, and downregulation of genes involved in cardiovascular system development and actin filament-based process. These results suggest that hiPSC-CMs can be a novel and physiologically relevant system for the study of alcohol-induced cardiac toxicity.
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Affiliation(s)
- Antonio Rampoldi
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Monalisa Singh
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Qingling Wu
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia
| | - Meixue Duan
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia
| | - Rajneesh Jha
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Joshua T Maxwell
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Joshua M Bradner
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | | | - Anita Saraf
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia.,Division of Cardiology, Emory University School of Medicine, Atlanta, Georgia
| | - Gary W Miller
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Greg Gibson
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia
| | - Lou Ann Brown
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Chunhui Xu
- Division of Pediatric Cardiology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia
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18
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Di Rocco G, Baldari S, Pani G, Toietta G. Stem cells under the influence of alcohol: effects of ethanol consumption on stem/progenitor cells. Cell Mol Life Sci 2019; 76:231-244. [PMID: 30306211 PMCID: PMC6339663 DOI: 10.1007/s00018-018-2931-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/10/2018] [Accepted: 10/01/2018] [Indexed: 12/13/2022]
Abstract
Stem cells drive embryonic and fetal development. In several adult tissues, they retain the ability to self-renew and differentiate into a variety of specialized cells, thus contributing to tissue homeostasis and repair throughout life span. Alcohol consumption is associated with an increased risk for several diseases and conditions. Growing and developing tissues are particularly vulnerable to alcohol's influence, suggesting that stem- and progenitor-cell function could be affected. Accordingly, recent studies have revealed the possible relevance of alcohol exposure in impairing stem-cell properties, consequently affecting organ development and injury response in different tissues. Here, we review the main studies describing the effects of alcohol on different types of progenitor/stem cells including neuronal, hepatic, intestinal and adventitial progenitor cells, bone-marrow-derived stromal cell, dental pulp, embryonic and hematopoietic stem cells, and tumor-initiating cells. A better understanding of the nature of the cellular damage induced by chronic and episodic heavy (binge) drinking is critical for the improvement of current therapeutic strategies designed to treat patients suffering from alcohol-related disorders.
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Affiliation(s)
- Giuliana Di Rocco
- Department of Research, Advanced Diagnostic, and Technological Innovation, Translational Research Area, IRCCS Regina Elena National Cancer Institute, Via E. Chianesi 53, 00144, Rome, Italy
| | - Silvia Baldari
- Department of Research, Advanced Diagnostic, and Technological Innovation, Translational Research Area, IRCCS Regina Elena National Cancer Institute, Via E. Chianesi 53, 00144, Rome, Italy
| | - Giovambattista Pani
- Institute of General Pathology, Laboratory of Cell Signaling, Catholic University Medical School, Largo F. Vito 1, 00168, Rome, Italy
| | - Gabriele Toietta
- Department of Research, Advanced Diagnostic, and Technological Innovation, Translational Research Area, IRCCS Regina Elena National Cancer Institute, Via E. Chianesi 53, 00144, Rome, Italy.
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19
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Jiang B, Zu W, Xu J, Xiong Z, Zhang Y, Gao S, Ge S, Zhang L. Botulinum toxin type A relieves sternocleidomastoid muscle fibrosis in congenital muscular torticollis. Int J Biol Macromol 2018; 112:1014-1020. [PMID: 29447964 DOI: 10.1016/j.ijbiomac.2018.02.077] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/08/2018] [Accepted: 02/09/2018] [Indexed: 12/20/2022]
Abstract
Congenital muscular torticollis (CMT) is a neck deformity that involves shortening of sternocleidomastoid muscle (SCM) characterized by muscle atrophy and interstitial fibrosis. To investigate wheatear Botulinum toxin type A (BTA) has anti-fibrotic effects in CMT, we established acquired muscular torticollis that mimetics CMT in rabbit by intra-SCM injection of anhydrous alcohol. The treatment groups received BTA (2.5units or 5units) injection into the fibrotic SCM. The shortening and thickening of SCM were recorded by B-mode ultrasound. Changes in Col1A1, Fn, α-SMA expression were determined by immunohistochemistry. In vitro studies, TGF-β induced NIH3T3 fibroblasts were used to evaluate anti-fibrosis effect of BTA. Expression of the myofibroblast marker α-SMA and fibrosis markers Col1A1 and Fn were detected by Western blotting and quantitative RT-PCR. Our results showed that BTA injection attenuated shortening and thickening of fibrotic SCM. Elevated expression of Col1A1, Fn, α-SMA were confirmed in this fibrotic muscle model but reversed after BTA injection. Similar results observed in TGF-β induced NIH3T3 fibroblasts in both mRNA and protein levels. In conclusion, our results suggested that BTA could be a promising agent against SCM fibrosis in CMT through regulating fibroblast and inhibiting myofibroblast differentiation.
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Affiliation(s)
- Banghong Jiang
- Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233000, PR China
| | - Wenxuan Zu
- Department of Anatomy, Bengbu Medical College, Bengbu, Anhui 233000, PR China
| | - Jing Xu
- Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233000, PR China
| | - Zhuyou Xiong
- Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233000, PR China
| | - Yichao Zhang
- Department of Ultrasonography, Bengbu Second People's Hospital, Bengbu, Anhui 233004, PR China
| | - Song Gao
- Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233000, PR China
| | - Shuxing Ge
- Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233000, PR China
| | - Li Zhang
- Department of Plastic Surgery, 1st Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui 233000, PR China.
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20
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Khelfi A, Azzouz M, Abtroun R, Reggabi M, Alamir B. [Direct mechanism of action in toxic myopathies]. ANNALES PHARMACEUTIQUES FRANÇAISES 2017; 75:323-343. [PMID: 28526123 DOI: 10.1016/j.pharma.2017.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/02/2017] [Accepted: 04/03/2017] [Indexed: 01/04/2023]
Abstract
Toxic myopathies are a large group of disorders generated by surrounding agents and characterized by structural and/or functional disturbances of muscles. The most recurrent are those induced by commonly used medications. Illicit drugs, environmental toxins from animals, vegetables, or produced by micro-organisms as well as chemical products commonly used are significant causes of such disorders. The muscle toxicity results from multiple mechanisms at different biological levels. Many agents can induce myotoxicity through a direct mechanism in which statins, glucocorticoids and ethyl alcohol are the most representative. Diverse mechanisms were highlighted as interaction with macromolecules and induction of metabolic and cellular dysfunctions. Muscle damage can be related to amphiphilic properties of some drugs (chloroquine, hydroxychloroquine, etc.) leading to specific lysosomal disruptions and autophagic dysfunctions. Some agents affect the whole muscle fiber by inducing oxidative stress (ethyl alcohol and some statins) or triggering cell death pathways (apoptosis or necrosis) resulting in extensive alterations. More studies on these mechanisms are needed. They would allow a better knowledge of the intracellular mediators involved in these pathologies in order to develop targeted therapies of high efficiency.
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Affiliation(s)
- A Khelfi
- Service de toxicologie, CHU Bab-El-Oued, rue Mohamed-Lamine-Debaghine, 16009 Alger, Algérie; Centre national de toxicologie, route du Petit-Staouali-Delly-Brahim, 16062 Alger, Algérie.
| | - M Azzouz
- Laboratoire central de biologie et de toxicologie, EHS Ait-Idir, rue Abderrezak-Hahad-Casbah, 16017 Alger, Algérie
| | - R Abtroun
- Service de toxicologie, CHU Bab-El-Oued, rue Mohamed-Lamine-Debaghine, 16009 Alger, Algérie
| | - M Reggabi
- Laboratoire central de biologie et de toxicologie, EHS Ait-Idir, rue Abderrezak-Hahad-Casbah, 16017 Alger, Algérie
| | - B Alamir
- Service de toxicologie, CHU Bab-El-Oued, rue Mohamed-Lamine-Debaghine, 16009 Alger, Algérie; Centre national de toxicologie, route du Petit-Staouali-Delly-Brahim, 16062 Alger, Algérie
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21
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Dasarathy S, Brown JM. Alcoholic Liver Disease on the Rise: Interorgan Cross Talk Driving Liver Injury. Alcohol Clin Exp Res 2017; 41:880-882. [PMID: 28295407 DOI: 10.1111/acer.13370] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 03/03/2017] [Indexed: 12/14/2022]
Affiliation(s)
| | - J Mark Brown
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, Ohio
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22
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Tan P, Liang H, Nie J, Diao Y, He Q, Hou B, Zhao T, Huang H, Li Y, Gao X, Zhou L, Liu Y. Establishment of an alcoholic fatty liver disease model in mice. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2016; 43:61-68. [PMID: 27739874 DOI: 10.1080/00952990.2016.1217539] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Alcoholic fatty liver disease (AFLD) defines an important stage in the progression of alcoholic liver disease (ALD), which is a major cause of morbidity and mortality worldwide. OBJECTIVE To establish a mouse model of AFLD. METHODS Male C57BL/6 mice were divided into the following two groups: (i) a control group, which was allowed free access to food and water and (ii) an alcohol-treated group, which was administered a 15% (v/v) alcohol solution instead of water. After 8-9 months of treatment, serum biochemical indexes, histopathological changes, liver triglyceride content, iron storage, and ferritin light chain protein expression were measured using an automatic biochemical analyzer, hematoxylin-eosin (HE) staining, a commercially available kit, Prussian blue staining, and Western blot analysis, respectively. RESULTS Compared with the control group, the alcohol-treated group displayed increased levels of serum LDH, ALT, and AST, decreased levels of ALB, and no significant change in levels of TP. Additionally, increased levels of serum TG, T-CHO, and LDL and decreased levels of serum GLU and HDL were observed in the alcohol-treated mice. HE staining showed that lipid vacuolization occurred in the livers of alcohol-treated mice. The alcohol-treated mice also exhibited increased liver triglyceride content. Moreover, Prussian blue staining and Western blot analysis demonstrated that chronic alcohol administration caused iron overloading of the liver. CONCLUSIONS Chronic administration of 15% (v/v) alcohol in the drinking water over 8-9 months caused AFLD in mice. Our results establish an AFLD model that represents a promising tool for the future study of the progression of ALD.
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Affiliation(s)
- Peizhu Tan
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Huan Liang
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China.,c Department of Clinical Laboratory , Harbin Medical University Cancer Hospital , Harbin , China
| | - Junhui Nie
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Yan Diao
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Qi He
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Baoyu Hou
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Tingting Zhao
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Hui Huang
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Yanze Li
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Xu Gao
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Lingyun Zhou
- a Department of Biochemistry and Molecular Biology , Harbin Medical University , Harbin , China.,b Translational Medicine Center of Northern China , Harbin , China
| | - Ying Liu
- d Department of Gastroenterology , Heilongjiang Province Hospital , Harbin , China
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23
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Mouton AJ, Maxi JK, Souza-Smith F, Bagby GJ, Gilpin NW, Molina PE, Gardner JD. Alcohol Vapor Inhalation as a Model of Alcohol-Induced Organ Disease. Alcohol Clin Exp Res 2016; 40:1671-8. [PMID: 27375174 DOI: 10.1111/acer.13133] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 05/25/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Chronic intermittent ethanol vapor (CIEV) exposure has been used extensively to produce rodent models of alcohol dependence, but unlike other models of alcohol abuse, CIEV has not been assessed as a model of end-organ damage. The purpose of this study was to characterize the effects of CIEV on peripheral organ systems affected by alcohol abuse, including the liver, lungs, and cardiovascular system. METHODS Adult male Sprague-Dawley rats were exposed to daily CIEV for a period of 8 weeks (14HR ON/10HR OFF), producing blood alcohol levels of ~200 mg/dl. Controls were exposed to room air. After 8 weeks, echocardiography was performed to assess cardiac function. Indices of liver injury (alanine and aspartate aminotransferases [ALT and AST]; cytochrome p450 2E1 [CYP2E1]; alcohol dehydrogenase [ADH]; Oil Red O and triglyceride content; lipid peroxidation; inflammatory cytokine expression; and macrophage infiltration), and lung inflammatory cell count, proinflammatory cytokine expression, and lipid peroxidation were measured. RESULTS Left ventricular posterior wall thickness was significantly decreased, and systolic blood pressure was significantly elevated by CIEV compared with air controls. CIEV led to a significant increase in plasma ALT and triglycerides compared with room air controls. CIEV did not affect liver triglyceride content, lipid staining or peroxidation, but increased CYP2E1 and chemokine (C-C motif) ligand 2 (CCL2) protein expression, while decreasing ADH expression. CIEV significantly increased numbers of both polymorphonuclear neutrophils and lymphocytes in the bronchoalveolar lavage fluid, indicative of pulmonary inflammation. However, CIEV did not produce significant changes in lung mass, pulmonary lipid peroxidation, inflammatory cytokine expression, or edema. CONCLUSIONS These results show that CIEV produces hepatic, pulmonary, and cardiovascular effects in rats similar to those found in other models of chronic alcohol administration. Alcohol vapor administration is a novel method of alcohol-induced tissue injury with high potential for widespread use in alcohol toxicology research.
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Affiliation(s)
- Alan J Mouton
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - John K Maxi
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Flavia Souza-Smith
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Gregory J Bagby
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Nicholas W Gilpin
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Patricia E Molina
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Jason D Gardner
- Department of Physiology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, Louisiana
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