1
|
Lin HY, Zhu X, Mazumder HOR, Ronis M, Pedersen KB, Hagensee M. Serum oxidative biomarkers associated with genital HPV infection and cervical lesions in women. J Med Virol 2024; 96:e29362. [PMID: 38180249 PMCID: PMC10845121 DOI: 10.1002/jmv.29362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/06/2024]
Abstract
Human papillomavirus (HPV) infection is a major cause of cervical cancer. Studies showed HPV carcinogenesis may be induced by oxidative stress affecting the host immune system. The objective of this study is to evaluate levels of four circulating oxidative stress biomarkers associated with the HPV infection, persistence, and cervical lesion status in women. The three serum biomarkers measuring oxidative damage to biomolecules (8-oxodG, 8-oxo-7,8-dihydro-2'-deoxyguanosine [8-oxodG] for DNA, 4-hydroxy-2-nonenal [4-HNE] for lipid, and protein carbonyl [PC] for protein) and one antioxidant (glutathione, GSH) collected from 38 women were evaluated. The PC levels were significantly higher for women with oncogenic HPV infection (p = 0.047) and persistence (p = 0.053) based on the unadjusted linear model. In particular, women with ≥3 oncogenic HPV types had a higher PC level than those without HPV infection (p = 0.041). Women with low-grade squamous intraepithelial lesions showed an elevated PC (p = 0.058). These trends remained similar after adjusting for age. The GSH levels were lower for women infected with ≥3 oncogenic HPV types based on age-adjusted results (p = 0.061). This study supported that serum PC was associated with HPV infection, persistence, and cervical lesions, so it can potentially be used to monitor HPV carcinogenesis. Further large-scale studies will be needed to confirm these findings.
Collapse
Affiliation(s)
- Hui-Yi Lin
- Biostatistics Program, School of Public Health, Louisiana
State University Health Sciences Center, New Orleans, Louisiana, USA
| | - Xiaodan Zhu
- Biostatistics Program, School of Public Health, Louisiana
State University Health Sciences Center, New Orleans, Louisiana, USA
| | - Harun Or Rashid Mazumder
- Biostatistics Program, School of Public Health, Louisiana
State University Health Sciences Center, New Orleans, Louisiana, USA
| | - Martin Ronis
- Department of Pharmacology & Experimental Therapeutics,
School of Medicine, Louisiana State University Health Sciences Center, New Orleans,
Louisiana, USA
| | - Kim Brint Pedersen
- Department of Pharmacology & Experimental Therapeutics,
School of Medicine, Louisiana State University Health Sciences Center, New Orleans,
Louisiana, USA
| | - Michael Hagensee
- Section of Infection Diseases, Department of Medicine,
School of Medicine, Louisiana State University Health Sciences Center, New Orleans,
Louisiana, USA
| |
Collapse
|
2
|
Messina M, Mejia SB, Cassidy A, Duncan A, Kurzer M, Nagato C, Ronis M, Rowland I, Sievenpiper J, Barnes S. Neither soyfoods nor isoflavones warrant classification as endocrine disruptors: a technical review of the observational and clinical data. Crit Rev Food Sci Nutr 2021; 62:5824-5885. [PMID: 33775173 DOI: 10.1080/10408398.2021.1895054] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Soybeans are a rich source of isoflavones, which are classified as phytoestrogens. Despite numerous proposed benefits, isoflavones are often classified as endocrine disruptors, based primarily on animal studies. However, there are ample human data regarding the health effects of isoflavones. We conducted a technical review, systematically searching Medline, EMBASE, and the Cochrane Library (from inception through January 2021). We included clinical studies, observational studies, and systematic reviews and meta-analyses (SRMA) that examined the relationship between soy and/or isoflavone intake and endocrine-related endpoints. 417 reports (229 observational studies, 157 clinical studies and 32 SRMAs) met our eligibility criteria. The available evidence indicates that isoflavone intake does not adversely affect thyroid function. Adverse effects are also not seen on breast or endometrial tissue or estrogen levels in women, or testosterone or estrogen levels, or sperm or semen parameters in men. Although menstrual cycle length may be slightly increased, ovulation is not prevented. Limited insight could be gained about possible impacts of in utero isoflavone exposure, but the existing data are reassuring. Adverse effects of isoflavone intake were not identified in children, but limited research has been conducted. After extensive review, the evidence does not support classifying isoflavones as endocrine disruptors.
Collapse
Affiliation(s)
- Mark Messina
- Department of Nutrition, Loma Linda University, Loma Linda, California, USA
| | - Sonia Blanco Mejia
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Aedin Cassidy
- Nutrition and Preventive Medicine, Queen's University, Belfast, Northern Ireland, UK
| | - Alison Duncan
- College of Biological Sciences, University of Guelph, Guelph, Canada
| | - Mindy Kurzer
- Department of Food Science and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA
| | - Chisato Nagato
- Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Martin Ronis
- Health Sciences Center, Louisiana State University Health Sciences Center, Baton Rouge, New Orleans, USA
| | - Ian Rowland
- Human Nutrition, University of Reading, Reading, England, UK
| | | | - Stephen Barnes
- Department of Pharmacology and Toxicology, University of Alabama, Alabama, USA
| |
Collapse
|
3
|
Jenkins B, Ronis M, Koulman A. LC-MS Lipidomics: Exploiting a Simple High-Throughput Method for the Comprehensive Extraction of Lipids in a Ruminant Fat Dose-Response Study. Metabolites 2020; 10:E296. [PMID: 32709069 PMCID: PMC7407148 DOI: 10.3390/metabo10070296] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/07/2020] [Accepted: 07/16/2020] [Indexed: 02/06/2023] Open
Abstract
Typical lipidomics methods incorporate a liquid-liquid extraction with LC-MS quantitation; however, the classic sample extraction methods are not high-throughput and do not perform well at extracting the full range of lipids especially, the relatively polar species (e.g., acyl-carnitines and glycosphingolipids). In this manuscript, we present a novel sample extraction protocol, which produces a single phase supernatant suitable for high-throughput applications that offers greater performance in extracting lipids across the full spectrum of species. We applied this lipidomics pipeline to a ruminant fat dose-response study to initially compare and validate the different extraction protocols but also to investigate complex lipid biomarkers of ruminant fat intake (adjoining onto simple odd chain fatty acid correlations). We have found 100 lipids species with a strong correlation with ruminant fat intake. This novel sample extraction along with the LC-MS pipeline have shown to be sensitive, robust and hugely informative (>450 lipids species semi-quantified): with a sample preparation throughput of over 100 tissue samples per day and an estimated ~1000 biological fluid samples per day. Thus, this work facilitating both the epidemiological involvement of ruminant fat, research into odd chain lipids and also streamlining the field of lipidomics (both by sample preparation methods and data presentation).
Collapse
Affiliation(s)
- Benjamin Jenkins
- NIHR BRC Core Metabolomics and Lipidomics Laboratory, University of Cambridge, Pathology Building Level 4, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK;
| | - Martin Ronis
- College of Medicine, Department of Pharmacology & Experimental Therapeutics, Louisiana State University Health Sciences Centre, 1901 Perdido Str., New Orleans, LA 70112, USA;
| | - Albert Koulman
- NIHR BRC Core Metabolomics and Lipidomics Laboratory, University of Cambridge, Pathology Building Level 4, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK;
| |
Collapse
|
4
|
Jenkins B, Aoun M, Feillet-Coudray C, Coudray C, Ronis M, Koulman A. The Dietary Total-Fat Content Affects the In Vivo Circulating C15:0 and C17:0 Fatty Acid Levels Independently. Nutrients 2018; 10:nu10111646. [PMID: 30400275 PMCID: PMC6266905 DOI: 10.3390/nu10111646] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/23/2018] [Accepted: 11/01/2018] [Indexed: 01/30/2023] Open
Abstract
Pentadecanoic acid (C15:0) and heptadecanoic acid (C17:0) have been described as dietary biomarkers of dairy-fat consumption, with varying degrees of reliability between studies. It remains unclear how the total amount of dietary fat, representing one of the main confounding factors in these biomarker investigations, affects C15:0 and C17:0 circulating concentrations independent of their relative intake. Additionally, it is not clear how changes in the dietary total-fat affects other fatty acids in circulation. Through two dietary studies with different total-fat levels but maintaining identical fatty acid compositions, we were able to see how the dietary total-fat affects the fatty acids in circulation. We saw that there was a statistically significant, proportionate, and robust decrease in the endogenous C15:0 levels with an increase in dietary total-fat. However, there was no significant change in the circulating C17:0 concentrations as the total-fat increased. To conclude, the dietary total-fat content and fat-type have a very complex influence on the relative compositions of circulating fatty acids, which are independent of the actual dietary fatty acid composition. Knowing how to manipulate circulating C15:0 and C17:0 concentrations is far-reaching in nutritional/pathological research as they highlight a dietary route to attenuate the development of metabolic disease (both by reducing risk and improving prognosis).
Collapse
Affiliation(s)
- Benjamin Jenkins
- NIHR Core Metabolomics and Lipidomics Laboratory, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge CB2 0QQ, UK.
| | - Manar Aoun
- DMEM, INRA, Univ. Montpellier, 34060 Montpellier, France.
| | | | | | - Martin Ronis
- College of Medicine, Department of Pharmacology & Experimental Therapeutics, Louisiana State University Health Sciences Centre, 1901 Perdido Str., New Orleans, LA 70112, USA.
| | - Albert Koulman
- NIHR Core Metabolomics and Lipidomics Laboratory, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge CB2 0QQ, UK.
| |
Collapse
|
5
|
Mercer KE, Chen C, Hennings L, Dawson H, Yeruva L, Ronis M, Badger T. Male testicular development is affected by estrogens but not altered in neonatal piglets receiving soy infant formula. FASEB J 2018. [DOI: 10.1096/fasebj.31.1_supplement.792.5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kelly E Mercer
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Celine Chen
- Genomics and Immunology LaboratoryBeltsville Human Nutrition Research CenterBeltsvilleMD
| | - Leah Hennings
- PathologyUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Harry Dawson
- Genomics and Immunology LaboratoryBeltsville Human Nutrition Research CenterBeltsvilleMD
| | - Laxmi Yeruva
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Martin Ronis
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Thomas Badger
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| |
Collapse
|
6
|
Bhattacharyya S, Mercer KE, Hennings L, Chaudhurry M, Yeruva L, Ronis M, Badger T. Infant formula feeding alters the proliferative status of neonatal mammary glands independent of estrogen signaling. FASEB J 2017. [DOI: 10.1096/fasebj.31.1_supplement.792.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sudeepa Bhattacharyya
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Kelly E Mercer
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Leah Hennings
- PathologyUniversity of Arkansas for Medical SciencesLittle RockAR
| | | | - Laxmi Yeruva
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Martin Ronis
- Arkansas Children's Nutrition CenterLittle RockAR
| | - Thomas Badger
- PediatricsUniversity of Arkansas for Medical SciencesLittle RockAR
- Arkansas Children's Nutrition CenterLittle RockAR
| |
Collapse
|
7
|
Jenkins BJ, Seyssel K, Chiu S, Pan PH, Lin SY, Stanley E, Ament Z, West JA, Summerhill K, Griffin JL, Vetter W, Autio KJ, Hiltunen K, Hazebrouck S, Stepankova R, Chen CJ, Alligier M, Laville M, Moore M, Kraft G, Cherrington A, King S, Krauss RM, de Schryver E, Van Veldhoven PP, Ronis M, Koulman A. Odd Chain Fatty Acids; New Insights of the Relationship Between the Gut Microbiota, Dietary Intake, Biosynthesis and Glucose Intolerance. Sci Rep 2017; 7:44845. [PMID: 28332596 PMCID: PMC5362956 DOI: 10.1038/srep44845] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 02/14/2017] [Indexed: 02/03/2023] Open
Abstract
Recent findings have shown an inverse association between circulating C15:0/C17:0 fatty acids with disease risk, therefore, their origin needs to be determined to understanding their role in these pathologies. Through combinations of both animal and human intervention studies, we comprehensively investigated all possible contributions of these fatty acids from the gut-microbiota, the diet, and novel endogenous biosynthesis. Investigations included an intestinal germ-free study and a C15:0/C17:0 diet dose response study. Endogenous production was assessed through: a stearic acid infusion, phytol supplementation, and a Hacl1−/− mouse model. Two human dietary intervention studies were used to translate the results. Finally, a study comparing baseline C15:0/C17:0 with the prognosis of glucose intolerance. We found that circulating C15:0/C17:0 levels were not influenced by the gut-microbiota. The dose response study showed C15:0 had a linear response, however C17:0 was not directly correlated. The phytol supplementation only decreased C17:0. Stearic acid infusion only increased C17:0. Hacl1−/− only decreased C17:0. The glucose intolerance study showed only C17:0 correlated with prognosis. To summarise, circulating C15:0 and C17:0 are independently derived; C15:0 correlates directly with dietary intake, while C17:0 is substantially biosynthesized, therefore, they are not homologous in the aetiology of metabolic disease. Our findings emphasize the importance of the biosynthesis of C17:0 and recognizing its link with metabolic disease.
Collapse
Affiliation(s)
- Benjamin J Jenkins
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom
| | - Kevin Seyssel
- Lyon University, INSERM U1060, CarMeN Laboratory and CENS, Claude Bernard University, CRNH Rhône-Alpes, Centre Hospitalier Lyon-Sud, 69310, Pierre-Bénite, France
| | - Sally Chiu
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, United States of America
| | - Pin-Ho Pan
- Department of Pediatrics, Tungs' Taichung MetroHarbor Hospital, Taichung 435, Taiwan
| | - Shih-Yi Lin
- Division of Endocrinology and Metabolism/Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, No. 1650, Sec. 4, Taiwan Boulevard, Taichung 407, Taiwan
| | - Elizabeth Stanley
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom
| | - Zsuzsanna Ament
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom
| | - James A West
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom
| | - Keith Summerhill
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom
| | - Julian L Griffin
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom
| | - Walter Vetter
- University of Hohenheim, Institute of Food Chemistry, Garbenstrasse 28, D-70599 Stuttgart, Germany
| | - Kaija J Autio
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, P.O. Box 5400, FI-90014, Finland
| | - Kalervo Hiltunen
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, University of Oulu, P.O. Box 5400, FI-90014, Finland
| | - Stéphane Hazebrouck
- UMR CEA-INRA Service de Pharmacologie et d'Immunoanalyse, Laboratoire d'Immuno-Allergie Alimentaire, Université Paris-Saclay, F-91991 Gif-sur-Yvette, France
| | - Renata Stepankova
- Laboratory of Gnotobiology, Institute of Microbiology, Czech Academy of Science, Novy Hradek, 549 22, Prague, Czech Republic
| | - Chun-Jung Chen
- Department of Medical Research, Taichung Veterans General Hospital, No. 1650, Sec.4, Taiwan Boulevard, Taichung 407, Taiwan
| | - Maud Alligier
- Lyon University, INSERM U1060, CarMeN Laboratory and CENS, Claude Bernard University, CRNH Rhône-Alpes, Centre Hospitalier Lyon-Sud, 69310, Pierre-Bénite, France
| | - Martine Laville
- Lyon University, INSERM U1060, CarMeN Laboratory and CENS, Claude Bernard University, CRNH Rhône-Alpes, Centre Hospitalier Lyon-Sud, 69310, Pierre-Bénite, France
| | - Mary Moore
- 702 Light Hall, Dept. of Molecular Physiology &Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0615, United States of America
| | - Guillaume Kraft
- 702 Light Hall, Dept. of Molecular Physiology &Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0615, United States of America
| | - Alan Cherrington
- 702 Light Hall, Dept. of Molecular Physiology &Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0615, United States of America
| | - Sarah King
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, United States of America
| | - Ronald M Krauss
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, United States of America
| | - Evelyn de Schryver
- Laboratory of Lipid Biochemistry and Protein Interactions (LIPIT), Campus Gasthuisberg - KU Leuven, Herestraat Box 601, B-3000 Leuven, Belgium
| | - Paul P Van Veldhoven
- Laboratory of Lipid Biochemistry and Protein Interactions (LIPIT), Campus Gasthuisberg - KU Leuven, Herestraat Box 601, B-3000 Leuven, Belgium
| | - Martin Ronis
- College of Medicine, Department of Pharmacology &Experimental Therapeutics, Louisiana State University Health Sciences Centre 1901 Perdido Str., New Orleans, United States of America
| | - Albert Koulman
- Medical Research Council Human Nutrition Research, Elsie Widdowson Laboratory, Fulbourn Road, Cambridge, CB1 9NL. Affiliated with the University of Cambridge, United Kingdom.,NIHR BRC Core Metabolomics and Lipidomics Laboratory, Level 4, Laboratory Block, Cambridge University Hospitals, University of Cambridge, Cambridge, UK
| |
Collapse
|
8
|
Ronis M, Mercer K, Engi B, Pulliam C, Zimniak P, Hennings L, Shearn C, Badger T, Petersen D. Global Deletion of Glutathione S-Transferase A4 Exacerbates Developmental Nonalcoholic Steatohepatitis. Am J Pathol 2017; 187:418-430. [PMID: 27998724 PMCID: PMC5389362 DOI: 10.1016/j.ajpath.2016.10.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/16/2016] [Accepted: 10/17/2016] [Indexed: 01/27/2023]
Abstract
We established a mouse model of developmental nonalcoholic steatohepatitis (NASH) by feeding a high polyunsaturated fat liquid diet to female glutathione-S-transferase 4-4 (Gsta4-/-)/peroxisome proliferator activated receptor α (Ppara-/-) double knockout 129/SvJ mice for 12 weeks from weaning. We used it to probe the importance of lipid peroxidation in progression of NASH beyond simple steatosis. Feeding Gsta4-/-/Ppara-/- double-knockout (dKO) mice liquid diets containing corn oil resulted in a percentage fat-dependent increase in steatosis and necroinflammatory injury (P < 0.05). Increasing fat to 70% from 35% resulted in increases in formation of 4-hydroxynonenal protein adducts accompanied by evidence of stellate cell activation, matrix remodeling, and fibrosis (P < 0.05). Comparison of dKO mice with wild-type (Wt) and single knockout mice revealed additive effects of Gsta4-/- and Ppara-/- silencing on steatosis, 4-hydroxynonenal adduct formation, oxidative stress, serum alanine amino transferase, expression of tumor necrosis factor alpha, Il6, interferon mRNA, and liver pathology (P < 0.05). Induction of Cyp2e1 protein by high-fat diet was suppressed in Gsta4-/- and dKO groups (P < 0.05). The dKO mice had similar levels of markers of stellate cell activation and matrix remodeling as Ppara-/- single KO mice. These data suggest that lipid peroxidation products play a role in progression of liver injury to steatohepatitis in NASH produced by high-fat feeding during development but appear less important in development of fibrosis.
Collapse
Affiliation(s)
- Martin Ronis
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center-New Orleans, New Orleans, Louisiana.
| | - Kelly Mercer
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, Arkansas; Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado.
| | - Bridgette Engi
- Department of Laboratory Animal Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Casey Pulliam
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center-New Orleans, New Orleans, Louisiana
| | - Piotr Zimniak
- Department of Pharmacology and Toxicology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Leah Hennings
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Colin Shearn
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Thomas Badger
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, Arkansas; Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Dennis Petersen
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| |
Collapse
|
9
|
Ronis M. Preface to DMR special edition "cytochrome P450: new horizons". Drug Metab Rev 2016; 48:329-30. [PMID: 27405254 DOI: 10.1080/03602532.2016.1211673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Martin Ronis
- a Department of Pharmacology and Experimental Therapeutics , Louisiana State University Health Sciences Center - New Orleans , New Orleans , LA , USA
| |
Collapse
|
10
|
Mercer KE, Pulliam C, Hennings L, Lai K, Cleves M, Jones E, Drake RR, Ronis M. Soy Protein Isolate Protects Against Ethanol-Mediated Tumor Progression in Diethylnitrosamine-Treated Male Mice. Cancer Prev Res (Phila) 2016; 9:466-75. [PMID: 27006377 DOI: 10.1158/1940-6207.capr-15-0417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 03/02/2016] [Indexed: 12/16/2022]
Abstract
In this study, diethylnitrosamine-treated male mice were assigned to three groups: (i) a 35% high fat ethanol liquid diet (EtOH) with casein as the protein source, (ii) the same EtOH liquid diet with soy protein isolate as the sole protein source (EtOH/SPI), (iii) and a chow group. EtOH feeding continued for 16 weeks. As expected, EtOH increased the incidence and multiplicity of basophilic lesions and adenomas compared with the chow group, P < 0.05. Soy protein replacement of casein in the EtOH diet significantly reduced adenoma progression when compared with the EtOH and EtOH/SPI group (P < 0.05). Tumor reduction in the EtOH/SPI group corresponded to reduced liver injury associated with decreased hepatic Tnfα and Cd14 antigen (Cd14) expression and decreased nuclear accumulation of NF-κB1 protein compared with the EtOH group (P < 0.05). Detection of sphingolipids using high-resolution matrix-assisted laser desorption/ionization-Fourier transform ion cyclotron resonance (MALDI-FTICR) imaging mass spectrometry revealed increased accumulation of long acyl chain ceramide species, and sphingosine-1-phosphate (S1P) in the EtOH group that were significantly reduced in the EtOH/SPI group. Chronic EtOH feeding also increased mRNA expression of β-catenin transcriptional targets, including cyclin D1 (Ccnd1), matrix metallopeptidase 7 (Mmp7), and glutamine synthetase (Glns), which were reduced in the EtOH/SPI group (P < 0.05). We conclude that soy prevents tumorigenesis by reducing proinflammatory and oxidative environment resulting from EtOH-induced hepatic injury, and by reducing hepatocyte proliferation through inhibition of β-catenin signaling. These mechanisms may involve changes in sphingolipid signaling. Cancer Prev Res; 9(6); 466-75. ©2016 AACR.
Collapse
Affiliation(s)
- Kelly E Mercer
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas. Arkansas Children's Nutrition Center, Little Rock, Arkansas.
| | - Casey Pulliam
- Arkansas Children's Nutrition Center, Little Rock, Arkansas
| | - Leah Hennings
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Keith Lai
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Mario Cleves
- Arkansas Children's Nutrition Center, Little Rock, Arkansas
| | - Ellen Jones
- Medical University of South Carolina Proteomic Center, Charleston, South Carolina
| | - Richard R Drake
- Medical University of South Carolina Proteomic Center, Charleston, South Carolina
| | - Martin Ronis
- Department of Pharmacology & Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana.
| |
Collapse
|
11
|
Mercer K, Hennings L, Lai K, Jones E, Drake R, Ronis M. A High Fat Diet Supplemented with Soy Prevents Diet Induced Promotion of Liver Tumors in DEN‐Treated Male Mice. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.147.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kelly Mercer
- PediatricsArkansas Children's Nutrition CenterLittle RockARUnited States
| | - Leah Hennings
- PathologyUniversity of Arkansas for Medical SciencesLittle RockARUnited States
| | - Keith Lai
- PathologyUniversity of Arkansas for Medical SciencesLittle RockARUnited States
| | - Ellen Jones
- Proteomic Center MedicalUniversity of South CarolinaCharlestonSCUnited States
| | - Richard Drake
- Proteomic Center MedicalUniversity of South CarolinaCharlestonSCUnited States
| | - Martin Ronis
- PediatricsArkansas Children's Nutrition CenterLittle RockARUnited States
| |
Collapse
|
12
|
Chen J, Andres A, Lazarenko O, Ronis M, Badger T. Infant formula increases bone turnover favoring bone formation (1027.8). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.1027.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jin‐Ran Chen
- PediatricsArkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Aline Andres
- PediatricsArkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Oxana Lazarenko
- PediatricsArkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Martin Ronis
- PediatricsArkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Thomas Badger
- PediatricsArkansas Children's Nutrition CenterLITTLE RocKARUnited States
| |
Collapse
|
13
|
Ronis M, Hennings L, Gomez‐Acevedo H, Badger T. Different responses to soy and estradiol in the reproductive system of prepubertal male rats and neonatal male pigs (373.5). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.373.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Ronis
- Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
- Pediatrics University of Arkansas Medical SciencesLITTLE RocKARUnited States
| | - Leah Hennings
- Pathology University of Arkansas Medical SciencesLITTLE RocKARUnited States
| | - Horacio Gomez‐Acevedo
- Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
- Pediatrics University of Arkansas Medical SciencesLITTLE RocKARUnited States
| | - Thomas Badger
- Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
- Pediatrics University of Arkansas Medical SciencesLITTLE RocKARUnited States
| |
Collapse
|
14
|
Ronis M, Miousse I, Gomez‐Acevedo H, Hennings L, Shankar K, Cleves M, Badger T. Soy protein isolate and estradiol differ in their effects on the mammary gland of weanling male and female rats (818.1). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.818.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Ronis
- Pediatrics Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Isabelle Miousse
- Pediatrics Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | | | - Leah Hennings
- Pathology University of Arkansas Medical SciencesLITTLE RocKARUnited States
| | - Kartik Shankar
- Pediatrics Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Mario Cleves
- Pediatrics Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
| | - Thomas Badger
- Pediatrics Arkansas Children's Nutrition CenterLITTLE RocKARUnited States
| |
Collapse
|
15
|
Ronis M, Baumgardner J, Sharma N, Vantease J, Ferguson M, Tong Y, Wu X, Cleves M, Badger T. Medium chain triglycerides dose‐dependently prevent liver pathology in a rat model of nonalcoholic fatty liver disease. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.112.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Ronis
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - January Baumgardner
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Neha Sharma
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Jamie Vantease
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Matthew Ferguson
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Yudong Tong
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Xianli Wu
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Mario Cleves
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Thomas Badger
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| |
Collapse
|
16
|
Ronis M, Baumgardner J, Marecki J, Henning L, Wu X, Shankar K, Cleves M, Gomez‐Acevedo H, Badger T. Dietary fat source alters hepatic gene expression profile and determines the type of liver pathology in rats overfed via total enteral nutrition. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1072.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Ronis
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - January Baumgardner
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - John Marecki
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Leah Henning
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Xianli Wu
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Kartik Shankar
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Mario Cleves
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Horacio Gomez‐Acevedo
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| | - Thomas Badger
- Arkansas Children's Nutrition CenterUniversity of Arkansas for Medical SciencesLittle RockAR
| |
Collapse
|
17
|
Smathers RL, Galligan JJ, Shearn CT, Fritz KS, Mercer K, Ronis M, Orlicky DJ, Davidson NO, Petersen DR. Susceptibility of L-FABP-/- mice to oxidative stress in early-stage alcoholic liver. J Lipid Res 2013; 54:1335-45. [PMID: 23359610 DOI: 10.1194/jlr.m034892] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Chronic ethanol consumption is a prominent cause of liver disease worldwide. Dysregulation of an important lipid uptake and trafficking gene, liver-fatty acid binding protein (L-FABP), may contribute to alterations in lipid homeostasis during early-stage alcoholic liver. We have reported the detrimental effects of ethanol on the expression of L-FABP and hypothesize this may deleteriously impact metabolic networks regulating fatty acids. Male wild-type (WT) and L-FABP(-/-) mice were fed a modified Lieber-DeCarli liquid diet for six weeks. To assess the response to chronic ethanol ingestion, standard biochemical indicators for alcoholic liver disease (ALD) and oxidative stress were measured. Ethanol ingestion resulted in attenuation of hepatic triglyceride accumulation and elevation of cholesterol in L-FABP(-/-) mice. Lipidomics analysis validated multiple alterations in hepatic lipids resulting from ethanol treatment. Increased immunohistochemical staining for the reactive aldehydes 4-hydroxynonenal and malondialdehyde were observed in WT mice ingesting ethanol; however, L-FABP(-/-) mice displayed prominent protein adducts in liver sections evaluated from pair-fed and ethanol-fed mice. Likewise, alterations in glutathione, thiobarbituric acid reactive substances (TBARS), 8-isoprostanes, and protein carbonyl content all indicated L-FABP(-/-) mice exhibit high sustained oxidative stress in the liver. These data establish that L-FABP is an indirect antioxidant protein essential for sequestering FFA and that its impairment could contribute to in the pathogenesis of ALD.
Collapse
Affiliation(s)
- Rebecca L Smathers
- Skaggs School of Pharmaceutical Sciences and Pharmacy and University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Borengasser S, Zhong Y, Gomez-Acevedo H, Ronis M, Shankar K. Alterations in hepatic gene expression and genome‐wide DNA methylation in rat offspring exposed to maternal obesity in utero. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.128.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Ying Zhong
- Arkansas Children's Nutrition CenterLittle RockAR
| | | | - Martin Ronis
- Arkansas Children's Nutrition CenterLittle RockAR
| | | |
Collapse
|
19
|
Setshedi M, Longato L, Petersen DR, Ronis M, Chen WC, Wands JR, de la Monte SM. Limited therapeutic effect of N-acetylcysteine on hepatic insulin resistance in an experimental model of alcohol-induced steatohepatitis. Alcohol Clin Exp Res 2011; 35:2139-51. [PMID: 21790669 DOI: 10.1111/j.1530-0277.2011.01569.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Alcohol-related steatohepatitis is associated with increased oxidative stress, DNA damage, lipotoxicity, and insulin resistance in liver. As inflammation and oxidative stress can promote insulin resistance, effective treatment with antioxidants, for example, N-acetylcysteine (NAC), may restore ethanol-impaired insulin signaling in the liver. METHODS Adult male Sprague-Dawley rats were fed for 130 days with liquid diets containing 0 or 37% ethanol by caloric content, and simultaneously treated with vehicle or NAC. Chow-fed controls were studied in parallel. Liver tissues were used for histopathology, cytokine activation, and insulin/IGF-1 signaling assays. RESULTS We observed significant positive trends of increasing severity of steatohepatitis (p = 0.016) with accumulation of neutral lipid (p = 0.0002) and triglycerides (p = 0.0004) from chow to control, to the ethanol diet, irrespective of NAC treatment. In ethanol-fed rats, NAC reduced inflammation, converted the steatosis from a predominantly microvesicular to a mainly macrovesicular histological pattern, reduced pro-inflammatory cytokine gene expression, ceramide load, and acid sphingomyelinase activity, and increased expression of IGF-1 receptor and IGF-2 in liver. However, NAC did not abrogate ethanol-mediated impairments in signaling through insulin/IGF-1 receptors, IRS-1, Akt, GSK-3β, or p70S6K, nor did it significantly reduce pro-ceramide or GM3 ganglioside gene expression in liver. CONCLUSIONS Antioxidant treatments reduce the severity of chronic alcohol-related steatohepatitis, possibly because of the decreased expression of inflammatory mediators and ceramide accumulation, but they do not restore insulin/IGF-1 signaling in liver, most likely due to persistent elevation of GM3 synthase expression. Effective treatment of alcohol-related steatohepatitis most likely requires dual targeting of oxidative stress and insulin/IGF resistance.
Collapse
Affiliation(s)
- Mashiko Setshedi
- Department of Medicine, Brown University, Providence, Rhode Island, USA
| | | | | | | | | | | | | |
Collapse
|
20
|
Yu S, Peng M, Ronis M, Badger T, Fang N. Analysis of polar lipids in the serum from rats fed shiitake by liquid chromatography-mass spectrometry/mass spectrometry. J Agric Food Chem 2010; 58:12650-12656. [PMID: 21090619 DOI: 10.1021/jf103266c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Consumption of a shiitake mushroom diet has been reported to have effects on serum phospholipids. However, much less is known about the effect on serum polar lipids including lysophospholipids and free fatty acids. In the present study, the effects of a shiitake diet were evaluated on the basis of identification and quantification of individual polar lipid components in rat serum using liquid chromatography-mass spectrometry/mass spectrometry. By comparison with standards and published data, 50 lysophospholipids and 32 free fatty acids were identified, and the concentrations of 27 polar lipids in rat serum were determined. Shiitake diets decreased the levels of all individual polar lipid components in the serum of male rat. The total level of serum polar lipids in males fed 4% shiitake diets (1365.71 mol/L) was significantly lower than that of the control (2270.26 mol/L). However, shiitake diets did not significantly affect the levels of serum polar lipids in female rats.
Collapse
Affiliation(s)
- Shanggong Yu
- Key Laboratory of Chinese Medicine Resource and Compound Prescription (Hubei University of Chinese Medicine), Ministry of Education, 1 Huang-jia-hu, Wuhan, China, 430065
| | | | | | | | | |
Collapse
|
21
|
Yu S, Fang N, Li Q, Zhang J, Luo H, Ronis M, Badger TM. In vitro actions on human cancer cells and the liquid chromatography-mass spectrometry/mass spectrometry fingerprint of phytochemicals in rice protein isolate. J Agric Food Chem 2006; 54:4482-92. [PMID: 16756384 DOI: 10.1021/jf0605852] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Rice protein isolate (RPI) has been reported to reduce the incidence of 7,12-dimethylbenz[a]anthracene-induced mammary tumors in rats. To determine the potential role of phytochemicals associated with the RPI, we studied in vitro antitumor activities of an ether fraction from RPI using human tumor cell lines, including two human breast carcinoma cell lines (MDA-MB-453 and MCF-7) and two myeloma cell lines (RPMI-8226 and IM-9). Concentration-dependent antiproliferative effects of the ether fraction were observed in all cell lines using the standard 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay. Fraction-induced apoptosis (P < 0.05) was detected in all cell lines, and this was associated with the induction of proapoptotic bax protein and cdk inhibitors (p21) and the suppression of cdk4 and cyclin D1 activity. Liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) with both positive and negative modes was used to analyze the phytochemicals in the ether fraction from RPI. Fifty-seven phytochemicals were identified or characterized by their diagnostic fragmentation patterns and direct comparison with the authentic standards on the basis of electrospray ionization-MS/MS data. The major components bound to RPI were lysoglycerophospholipids, fatty acids, and fatty acid 3-[2-(2,3-dihydroxy-propoxycarbonyl)-2-hydroxy-ethoxy]-2-hydroxy-propyl esters.
Collapse
Affiliation(s)
- Shanggong Yu
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
| | | | | | | | | | | | | |
Collapse
|
22
|
Abstract
Most drug- and steroid-metabolizing cytochrome P450 (CYP) enzymes are expressed in the mammalian liver in a characteristic zonated pattern, with high expression in the downstream perivenous (centrilobular) region. Here, we report that CYP2C7, a member of the rat CYP2 family, is expressed preferentially in the opposite, periportal region. CYP2C7 mRNA, as detected by reverse transcription-polymerase chain reaction, was detected almost exclusively in cell lysates obtained from the periportal region, indicating a very steep acinar gradient. The amount of immunoreactive CYP2C7 protein in periportal cell lysates was also higher than in samples from the perivenous region. This gradient was reversed by hypophysectomy, which markedly and selectively reduced the periportal CYP2C7 protein content. Subsequent growth hormone infusion by osmotic minipumps restored the zonation by selectively increasing the amount of periportal CYP2C7 protein. Although hypophysectomy suppressed CYP2C7 mRNA and growth hormone counteracted it, regulation at this level did not appear to occur in a zone-specific fashion. This indicates that growth hormone-mediated zonal regulation of CYP2C7 protein has additional translational or posttranslational components. Ethanol treatment, which has been shown to affect growth hormone levels, significantly induced CYP2C7 mRNA, but not zone specifically. Our results demonstrate that growth hormone up-regulates the CYP2C7 gene by enhancing the expression of the protein specifically in the periportal liver region. Growth hormone may up-regulate other periportally expressed liver genes in a similar fashion.
Collapse
Affiliation(s)
- T Oinonen
- Alcohol Research Center, National Public Health Institute, Helsinki, Finland
| | | | | | | | | | | |
Collapse
|
23
|
Löf K, Lindros K, Seppa K, Fukunaga T, Badger T, Ronis M, Sillanaukee P. The effect of ethanol or hepatotoxin exposure on rat transferrin desialylation. Alcohol Alcohol 1996; 31:445-51. [PMID: 8949960 DOI: 10.1093/oxfordjournals.alcalc.a008178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Serum carbohydrate-deficient transferrin (CDT) is being increasingly used as a biological indicator for excessive alcohol consumption. However, the mechanisms behind the changes in the carbohydrate moiety of transferrin are unclear, although they have been suggested to be mediated by acetaldehyde or liver damage. To study this, an animal model involving alterations in serum isotransferrin concentrations would be needed. The present work examined the changes in the carbohydrate moiety of transferrin in rats after different degrees of ethanol exposure, the effects of chronically elevated acetaldehyde levels, and also the changes, produced with liver toxins (galactosamine) and carbon tetrachloride). Ethanol was administered both in the drinking fluid and by intubation, reaching a dose of 11 g/kg/day over 7 weeks, or 16 g/kg/day over 4 weeks. Serum samples from rats maintained on high ethanol for 10 weeks by intragastric infusion were also analysed. Some rats simultaneously had cyanamide administered to elevate acetaldehyde levels. However, neither ethanol nor acetaldehyde had any effect on transferrin. Intraperitoneal galactosamine, but not carbon tetrachloride, induced transferrin desialylation. Thus, in the rat, neither chronic ethanol consumption nor elevated acetaldehyde induces changes in transferrin microheterogeneity.
Collapse
Affiliation(s)
- K Löf
- Biomedical Research Center, Alko Ltd, Helsinki, Finland
| | | | | | | | | | | | | |
Collapse
|
24
|
Lindros KO, Badger T, Ronis M, Ingelman-Sundberg M, Koivusalo M. Phenethyl isothiocyanate, a new dietary liver aldehyde dehydrogenase inhibitor. J Pharmacol Exp Ther 1995; 275:79-83. [PMID: 7562599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Phenethyl isothiocyanate (PEITC) is found in cabbages and other commonly ingested cruciferous vegetables. Isothiocyanates have anticarcinogenic properties, proposed to be mediated in part by their inhibition of several cytochrome P450 (CYP) forms. We administered PEITC to rats treated chronically with ethanol for 38 days by means of total enteral nutrition model to inhibit CYP2E1. We observed that PEITC not only efficiently prevented the ethanol-induced elevation of CYP2E1 apoprotein and mRNA, but also significantly elevated blood acetaldehyde levels. An elevation also was observed in naive animals acutely administered PEITC and ethanol, an effect found to be associated with marked inhibition of liver aldehyde dehydrogenase (ALDH). PEITC (1 mmol/kg) inhibited total liver ALDH activity by more than 70% and inhibition persisted for at least 24 hr. The inhibition was similar to that caused by an equimolar dose of disulfiram. Experiments using subcellular rat liver fractions revealed that both low- and high-Km ALDH forms were inhibited by low concentrations of PEITC (IC50 = 0.8-6.0 microM). Importantly, the mitochondrial low-Km ALDH activity, which is mainly responsible for detoxification of low aldehyde levels, was strongly inhibited (IC50 = 1.4 microM). In contrast, neither alcohol dehydrogenase nor lactate dehydrogenase activity was inhibited by PEITC. Thus, PEITC inhibits liver ALDH with a potency similar to that of disulfiram, suggesting that, in susceptible individuals, ingestion of large amounts of cruciferous vegetables in combination with alcohol could give rise to antabus-like symptoms. This property of PEITC must be taken into account in experimental alcohol research and in evaluating its proposed anticarcinogenic actions on chemical procarcinogens that are activated into potentially carcinogenic aldehydes.
Collapse
Affiliation(s)
- K O Lindros
- Biomedical Research Center, Alko Group Ltd., Helsinki, Finland
| | | | | | | | | |
Collapse
|
25
|
Badger TM, Huang J, Ronis M, Lumpkin CK. Induction of cytochrome P450 2E1 during chronic ethanol exposure occurs via transcription of the CYP 2E1 gene when blood alcohol concentrations are high. Biochem Biophys Res Commun 1993; 190:780-5. [PMID: 8439329 DOI: 10.1006/bbrc.1993.1117] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Induction of cytochrome P450 CYP 2E1 during chronic ethanol exposure in rats has been reported by our laboratory to occur by a complex two step process. The first step occurs at relatively low blood alcohol concentrations and involves increases in CYP 2E1-dependent activities and apoprotein levels with no increases in steady-state mRNA encoding CYP 2E1. The second step of this process occurs at higher blood alcohol concentrations and involves elevated mRNA levels. In this report, we demonstrate for the first time that CYP 2E1 induction by chronic ethanol is associated with increased CYP 2E1 gene transcription and is independent of gonadal factors.
Collapse
Affiliation(s)
- T M Badger
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock 72205
| | | | | | | |
Collapse
|
26
|
Edelstein DR, Avner SE, Chow JM, Duerksen RL, Johnson J, Ronis M, Rybak LP, Bierman WC, Matthews BL, Kohlbrenner VM. Once-a-day therapy for sinusitis: a comparison study of cefixime and amoxicillin. Laryngoscope 1993; 103:33-41. [PMID: 8421417 DOI: 10.1288/00005537-199301000-00008] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The efficacy and safety of a once-a-day antibiotic in the treatment of sinusitis was studied. Two randomly assigned groups were treated with either once-a-day cefixime, a third generation cephalosporin, or amoxicillin three times a day. One hundred and fourteen patients were evaluated with antral punctures, microbiologic evaluation, and radiographic studies. Cultures revealed 40% gram-negative organisms, 48% gram-positive, and 12% anaerobes. The most common bacteria were Haemophilus influenzae, Streptococcus pneumoniae, Staphylococcus aureus and viridans group streptococci. Ninety-four percent of the cefixime group were cured compared with 96% of the amoxicillin group. Staphylococcus resistance was a problem in both groups, necessitating an occasional change to amoxicillin-clavulanate potassium in the amoxicillin group. Once-a-day antibiotics offer the potential for improved compliance in the treatment of sinusitis. Cefixime offers an additional benefit of covering beta-lactamase producing strains of bacteria which are increasing in incidence and resistant to many penicillins.
Collapse
Affiliation(s)
- D R Edelstein
- Department of Otolaryngology--Head and Neck Surgery, Manhattan Eye, Ear & Throat Hospital, New York, NY 10021
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
|