Research Topics
Genomes and Genes | Herbert L BonkovskySummaryAffiliation: University of Connecticut Health Center Country: USA Publications
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Publications
Comparison of amplification enzymes for Hepatitis C Virus quasispecies analysisStephen J Polyak
Virology Division, Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
Virol J 2:41. 2005..QS diversity and complexity were quantified using heteroduplex mobility assays (HMA)...
Iron as a co-morbid factor in nonhemochromatotic liver diseaseHerbert L Bonkovsky
University of Connecticut Health Center, MC 1111, 263 Farmington Avenue, Farmington, CT 06030 1111, USA
Alcohol 30:137-44. 2003..Iron loading has also been described after portosystemic shunts and in end-stage liver disease...
Roles of iron and HFE mutations on severity and response to therapy during retreatment of advanced chronic hepatitis CHerbert L Bonkovsky
Department of Medicine, University of Connecticut Health Center, Farmington, Connecticut, USA
Gastroenterology 131:1440-51. 2006....
Health-related quality of life in patients with chronic hepatitis C and advanced fibrosisHerbert L Bonkovsky
Liver Biliary Pancreatic Center and the Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA
J Hepatol 46:420-31. 2007..This study assessed HRQOL and sexual health in patients with advanced fibrosis or cirrhosis in the HALT-C Trial...
Iron levels in hepatocytes and portal tract cells predict progression and outcomes of patients with advanced chronic hepatitis CRichard W Lambrecht
Department of Medicine, University of Connecticut Health Center, Farmington, Connecticut, USA
Gastroenterology 140:1490-500.e3. 2011..Our aim was to assess the relationship of iron and HFE genetic variations to progression and outcomes in the HALT-C Trial and whether PegIFN therapy influenced iron variables...
HCV proteins increase expression of heme oxygenase-1 (HO-1) and decrease expression of Bach1 in human hepatoma cellsTahereh Ghaziani
Department of Medicine, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030 1111, USA
J Hepatol 45:5-12. 2006..Other recent work has implicated Bach1, a heme binding protein that represses gene expression, in the regulation of HO-1 gene expression...
Reciprocal effects of micro-RNA-122 on expression of heme oxygenase-1 and hepatitis C virus genes in human hepatocytesYing Shan
Department of Medicine, University of Connecticut Health Center, Farmington, Connecticut, USA
Gastroenterology 133:1166-74. 2007..This study was to assess whether a specific miR-122 antagomir down-regulates HCV protein replication and up-regulates HO-1...
Role of Bach1 and Nrf2 in up-regulation of the heme oxygenase-1 gene by cobalt protoporphyrinYing Shan
Department of Medicine, University of Connecticut Health Center, Farmington, Connecticut, USA
FASEB J 20:2651-3. 2006..Because CoPP, unlike heme, is neither a prooxidant nor a substrate for HO-1, it might be considered as a potential therapeutic agent in situations where up-regulation of HO-1 is desired...
A functional polymorphism in the epidermal growth factor gene is associated with risk for hepatocellular carcinomaBarham K Abu Dayyeh
Gastrointestinal Unit, Massachusetts General Hospital, Department of Medicine, Harvard Medical School, Boston, Massachusetts 02114, USA
Gastroenterology 141:141-9. 2011..We tested associations between demographic, clinical, and genetic data and development of HCC, and developed a simple predictive model in a cohort of patients with chronic hepatitis C and advanced fibrosis...
Effects of silymarin on hepatitis C virus and haem oxygenase-1 gene expression in human hepatoma cellsVania Bonifaz
Department of Microbial Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
Liver Int 29:366-73. 2009..HCV infection is associated with increased hepatic oxidative stress, and one of the antioxidant enzymes that protect cells against this stress is haem oxygenase-1 (HO-1)...
Identification of key elements that are responsible for heme-mediated induction of the avian heme oxygenase-1 geneYing Shan
Department of Medicine, University of Connecticut Health Center, Farmington 06030, USA
Biochim Biophys Acta 1679:87-94. 2004..These key regulatory elements consist of consensus AP-1 binding sites that have been extended by three base pairs...
Role of Bach-1 in regulation of heme oxygenase-1 in human liver cells: insights from studies with small interfering RNASYing Shan
Department of Medicine and Pharmacology, the General Clinical Research Center of the University of Connecticut Health Center, Farmington, Connecticut 06030, USA
J Biol Chem 279:51769-74. 2004..Exogenous heme produces additional up-regulation, beyond that produced by Bach-1 siRNAs, suggesting that heme does not act solely through its effects on Bach-1...
A functional serotonin transporter gene polymorphism and depressive effects associated with interferon-alpha treatmentAmira Pierucci-Lagha
Department of Psychiatry, University of Connecticut School of Medicine, Farmington, CT 06030 2103, USA
Psychosomatics 51:137-48. 2010..Interferon-alpha (IFN-alpha) treatment frequently induces depression, potentially leading to early dose reductions or a shorter duration of treatment, which can adversely affect outcomes, including quality of life...
Haem repression of the housekeeping 5-aminolaevulinic acid synthase gene in the hepatoma cell line LMHSridevi Kolluri
Department of Molecular, Microbial, and Structural Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
Biochem J 392:173-80. 2005....
Efficacy and safety of peginterferon alfa-2a/ribavirin in methadone maintenance patients: randomized comparison of direct observed therapy and self-administrationHerbert L Bonkovsky
University of Connecticut Health Center, Farmington, Connecticut, USA
Am J Gastroenterol 103:2757-65. 2008..We assessed the safety, tolerability, and efficacy of peginterferon alfa-2a/ribavirin treatment in methadone maintenance patients previously untreated for CHC...
Vascular endothelium as a contributor of plasma sphingosine 1-phosphateKrishnan Venkataraman
Center for Vascular Biology, Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
Circ Res 102:669-76. 2008..These data suggest that the vascular endothelium, in addition to the hematopoietic system, is a major contributor of plasma S1P...
Iron in nonhemochromatotic liver disordersVamsee Alla
Department of Medicine and The Liver-Biliary-Pancreatic Center, The University of Connecticut Health Center, Farmington, Connecticut 06030, USA
Semin Liver Dis 25:461-72. 2005..In this article we review selected nonhemochromatotic disorders in which iron can play an important comorbid role...
Drug-induced liver injury associated with statinsMark W Russo
Department of Medicine, Carolinas Medical Center, Charlotte, North Carolina 28203, USA
Semin Liver Dis 29:412-22. 2009..Multiple retrospective studies as well as a large prospective randomized controlled trial demonstrate that statins can safely be given to hyperlipidemic patients with compensated chronic liver disease...
Liver transplantation for erythropoietic protoporphyria liver diseaseBrendan M McGuire
Department of Medicine, University of Alabama at Birmingham, 1530 Third Avenue South, Birmingham, AL 35294 0005, USA
Liver Transpl 11:1590-6. 2005..In conclusion, the 5-year patient survival rate in patients transplanted for EPP liver disease is good, but the recurrence of EPP liver disease appears to diminish long term graft and patient survival...
Association of hepatitis C virus infection with serum iron status: analysis of data from the third National Health and Nutrition Examination SurveyYing Shan
Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
Clin Infect Dis 40:834-41. 2005..In the present study, the association of hepatitis C virus (HCV) infection with serum measurements of iron status was assessed in the US population...
Serum measures of iron status and HFE gene mutations in patients with hepatitis B virus infectionTahereh Ghaziani
Department of Medicine, University of Connecticut Health Center, Farmington, USA
Hepatol Res 37:172-8. 2007..Carriage of HFE mutations is not associated with the presence of chronic HBV infection or values of serum iron measures in this population, although HFE H63D is associated with more advanced hepatic fibrosis...
Genetic aspects of porphyria cutanea tardaRichard W Lambrecht
Department of Pharmacology, and The Liver Biliary Pancreatic Center, University of Connecticut Health Center, Farmington, Connecticut 06030 1119, USA
Semin Liver Dis 27:99-108. 2007....
Case records of the Massachusetts General Hospital. Case 20-2008. A 57-year-old woman with abdominal pain and weakness after gastric bypass surgeryHerbert L Bonkovsky
Department of Medicine, University of Connecticut Health Center, Farmington, USA
N Engl J Med 358:2813-25. 2008
DNA methylation patterns in alcoholics and family controlsManish Thapar
Manish Thapar, Herbert L Bonkovsky, Department of Medicine, The University of Connecticut Health Center, Farmington, CT 06030, United States
World J Gastrointest Oncol 4:138-44. 2012..To assess whether DNA methylation patterns in chronic alcoholics are different from non-alcoholic sibling controls...
Management of nonalcoholic steatohepatitis: an analytic reviewSanjay Agrawal
Department of Medicine, The Liver-Biliary-Pancreatic Center of the University of Massachusetts Medical School, Worchester, USA
J Clin Gastroenterol 35:253-61. 2002..In this review, we summarize the extant literature on the management of NASH and discuss the potential future therapies and prophylactic recommendations in patients with NASH...
Vascular endothelial growth factor increases heme oxygenase-1 protein expression in the chick embryo chorioallantoic membraneMercedes Fernandez
Division of Gastroenterology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01655, USA
Br J Pharmacol 139:634-40. 2003..Our findings also suggest that HO-1 activity is necessary for VEGF-induced angiogenesis in CAMs...
Autoimmune hepatitis triggered by statinsVamsee Alla
Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
J Clin Gastroenterol 40:757-61. 2006..3 similar previously reported cases are reviewed. We conclude that the 3 cases reported here and 3 similar previously reported cases, indicate that severe, ongoing AIH on rare occasions can be triggered by statins...
Causes, clinical features, and outcomes from a prospective study of drug-induced liver injury in the United StatesNaga Chalasani
Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
Gastroenterology 135:1924-34, 1934.e1-4. 2008..This report summarizes the causes, clinical features, and outcomes from the first 300 patients enrolled...
Mapping of the chick heme oxygenase-1 proximal promoter for responsiveness to metalloporphyrinsYing Shan
Department of Medicine, and the The Liver Biliary Pancreatic Center, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, Massachusetts 01655, USA
Arch Biochem Biophys 399:159-66. 2002..We conclude that the chick HO-1 promoter region contains a unique sequence that subserves up-regulation of the gene by metalloporphyrins and propose the name "metalloporphyrin-responsive element" for this sequence...
Fatal air and bile embolism after percutaneous liver biopsy and ERCPJunaid Siddiqui
Department of Medicine (Gastroenterology-Hepatology, University of Connecticut Health Center, Farmington, CT 06030, USA
Gastrointest Endosc 61:153-7. 2005
Hepatic porphyrias: diagnosis and managementAnnie T Chemmanur
Office of Clinical Research, Liver-Biliary-Pancreatic Center, University of Connecticut Health Center, Farmington, CT 06030, USA
Clin Liver Dis 8:807-38, viii. 2004..Thus, the porphyrias can best be understood after reviewing the chemical properties of porphyrins and heme and the control of their biosynthesis...
Relationship of serum fibrosis markers with liver fibrosis stage and collagen content in patients with advanced chronic hepatitis CRobert J Fontana
Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
Hepatology 47:789-98. 2008..The stronger correlation of the serum markers with Ishak scores suggests that serum fibrosis markers reflect the pattern of fibrosis more closely than the quantity of hepatic collagen...
Phlebotomy improves therapeutic response to interferon in patients with chronic hepatitis C: a meta-analysis of six prospective randomized controlled trialsTusar K Desai
William Beaumont Hospital, Royal Oak, MI, USA
Dig Dis Sci 53:815-22. 2008..Phlebotomy improves the SVR in response to IFN treatment in patients with CHC. Confirmation of this will require RCT with detailed pre-treatment iron studies and appropriately powered to demonstrate a statistically significant benefit...
Herbal product use by persons enrolled in the hepatitis C Antiviral Long-Term Treatment Against Cirrhosis (HALT-C) TrialLeonard B Seeff
Division of Digestive Diseases and Nutrition, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
Hepatology 47:605-12. 2008..Because its use among these HALT-C participants was self-motivated and uncontrolled, however, only a well-designed prospective study can determine whether silymarin provides benefit to persons with chronic hepatitis C...
Hereditary hemochromatosis: time for targeted screeningPradyumna D Phatak
Rochester General Hospital, 1425 Portland Avenue, Rochester, NY 14621, USA
Ann Intern Med 149:270-2. 2008..In this article, the authors draw attention again to hereditary hemochromatosis as a cause of preventable organ dysfunction and propose targeted case finding for Caucasian men of Northern European ancestry...
Iron as a comorbid factor in chronic viral hepatitisHerbert L Bonkovsky
Am J Gastroenterol 97:1-4. 2002
Blunted cytopenias and weight loss: new correlates of virologic null response to re-treatment of chronic hepatitis CKaren L Lindsay
Division of Gastrointestinal and Liver Diseases, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA
Clin Gastroenterol Hepatol 6:234-41. 2008..Although viral kinetic profiles in treatment responders shed light on the mechanism of action of interferon and ribavirin, minimal information is available to explain why some patients experience little or no virologic suppression...
Zinc mesoporphyrin induces rapid and marked degradation of the transcription factor Bach1 and up-regulates HO-1Weihong Hou
The Liver Biliary Pancreatic Center, Carolinas Medical Center, Charlotte, NC 28232 2861, USA
Biochim Biophys Acta 1779:195-203. 2008..Our results indicate that ZnMP up-regulates HO-1 gene expression by markedly increasing Bach1 protein degradation in a proteasome-dependent manner...
Hepatic steatosis in hepatitis C: comparison of diabetic and nondiabetic patients in the hepatitis C antiviral long-term treatment against cirrhosis trialAnna S F Lok
Division of Gastroenterology, University of Michigan Medical Center, Ann Arbor, Michigan 48109 0362, USA
Clin Gastroenterol Hepatol 5:245-54. 2007....
Evolution of the intrahepatic T cell repertoire during chronic hepatitis C virus infectionVicki M Giuggio
Center for Infectious Disease and Vaccine Research, University of Massachusetts Medical School, 55 Lake Ave. North, Worcester, MA 01655, USA
Viral Immunol 18:179-89. 2005..Detailed analysis using TCRBJ-primed run-off reactions revealed that the intrahepatic TCR repertoires were not stable within an individual, although some TCR clonotypes were maintained for at least 45 months...
Evolution of the HALT-C Trial: pegylated interferon as maintenance therapy for chronic hepatitis C in previous interferon nonrespondersWilliam M Lee
Control Clin Trials 25:472-92. 2004..The protocol changes enhanced enrollment while upholding the original goals of the study and its integrity...
Peginterferon alfa-2a and ribavirin in patients with chronic hepatitis C who have failed prior treatmentMitchell L Shiffman
Hepatology Section, Virginia Commonwealth University, Richmond, 23298, USA
Gastroenterology 126:1015-23; discussion 947. 2004..This study evaluated the effectiveness of this treatment in patients who were nonresponders to previous interferon-based therapy...
Iron and HFE or TfR1 mutations as comorbid factors for development and progression of chronic hepatitis CHerbert L Bonkovsky
Liver Biliary Pancreatic Center, University of Massachusetts Medical School, Worcester, MA 01655, USA
J Hepatol 37:848-54. 2002..The aim of this study was to assess the role of hepatic iron, HFE and TfR1 variations on development and progression of chronic hepatitis C infection...
Predicting cirrhosis in patients with hepatitis C based on standard laboratory tests: results of the HALT-C cohortAnna S F Lok
Division of Gastroenterology, University of Michigan Medical Center, 3912 Taubman Center, Ann Arbor, MI 48210, USA
Hepatology 42:282-92. 2005..In conclusion, a model based on standard laboratory test results can be used to predict histological cirrhosis with a high degree of accuracy in 50% of patients with CHC...
No role of the -2518 promoter polymorphism of monocyte chemotactic protein-1 in chronic hepatitis CHerbert L Bonkovsky
Gastroenterology 129:1361-2. 2005
Hepatitis C virus-specific immune responses and quasi-species variability at baseline are associated with nonresponse to antiviral therapy during advanced hepatitis CChihiro Morishima
Department of Laboratory Medicine and Pediatrics, University of Washington, Seattle, USA
J Infect Dis 193:931-40. 2006..Thus, in patients with advanced hepatic fibrosis due to HCV infection, pretreatment HCV-specific immune responses and increased QS variability appear to hinder viral clearance by pegylated IFN- alpha 2a and ribavirin combination therapy...
Impact of reducing peginterferon alfa-2a and ribavirin dose during retreatment in patients with chronic hepatitis CMitchell L Shiffman
Hepatology Section, Virginia Commonwealth University Medical Center, Richmond, VA 23298, USA
Gastroenterology 132:103-12. 2007..However, prior studies did not assess the impact of reducing the dose of peginterferon independent of ribavirin or differentiate between dose reduction or interrupting or prematurely discontinuing treatment...
HCV RNA detection by TMA during the hepatitis C antiviral long-term treatment against cirrhosis (Halt-C) trialChihiro Morishima
Department of Laboratory Medicine, University of Washington, Seattle, WA 98104, USA
Hepatology 44:360-7. 2006..In patients with negative PCR results during treatment, a single positive TMA test did not exclude SVR, although persistently positive tests did...
Impact of disease severity on outcome of antiviral therapy for chronic hepatitis C: Lessons from the HALT-C trialGregory T Everson
Section of Hepatology, Division of Gastroenterology and Hepatology, University of Colorado School of Medicine, Denver, CO, USA
Hepatology 44:1675-84. 2006..In conclusion, disease severity is a major independent determinant of rate of SVR in patients with advanced chronic hepatitis C. New strategies are needed to optimize antiviral therapy in these "difficult-to-cure" patients...
Intestinal expression of genes involved in iron absorption in humansAndreas Rolfs
Membrane Biology Program and Renal Division, Brigham and Women s Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
Am J Physiol Gastrointest Liver Physiol 282:G598-607. 2002..The lack of appropriate downregulation of apical and basolateral iron transporters in duodenum likely leads to excessive iron absorption in persons with HHC...
Hemochromatosis mutations in Iranians with hepatitis B virus infectionHossein Sendi
Research Center for Gastroenterology and Liver Diseases, Shaheed Beheshti University of Medical Sciences, Tehran, Iran
Clin Infect Dis 40:e19-21. 2005..We found that the major C282Y mutation was significantly more frequent in subjects infected with hepatitis B virus (4%) than in 194 control subjects (0%, P=.02; Fisher's exact test)...
Hemochromatosis and porphyriaRichard W Lambrecht
Department of Medicine and Biochemistry, The Liver-Biliary-Pancreatic Center, University of Massachusetts Medical School, Worcester 01605-2324, USA
Semin Gastrointest Dis 13:109-19. 2002..After the diagnosis, the patient underwent an aggressive series of therapeutic phlebotomies to reduce iron levels, and gradually the cutaneous manifestations of porphyria cutanea tarda improved...
Optimal management of nonalcoholic fatty liver/steatohepatitisHerbert L Bonkovsky
J Clin Gastroenterol 36:193-5. 2003
Associations among clinical, immunological, and viral quasispecies measurements in advanced chronic hepatitis CAlan Lee Rothman
Center for Infectious Disease and Vaccine Research and Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
Hepatology 41:617-25. 2005....
Marked hyperbilirubinemia associated with the heme oxygenase-1 gene promoter microsatellite polymorphism in a boy with autoimmune hemolytic anemiaStephan Immenschuh
Institute of Clinical Immunology and Transfusion Medicine, Justus Liebig University, Giessen, Germany
Pediatrics 119:e764-7. 2007..Because bilirubin production plays a critical role during the neonatal period, the HO-1 promoter polymorphism may be an important genetic factor for the clinical outcome of neonatal hyperbilirubinemia...
Tissue-specific expression of ALA synthase-1 and heme oxygenase-1 and their expression in livers of rats chronically exposed to ethanolJianyu Zheng
Liver Biliary Pancreatic Center, Carolinas Medical Center, 1000 Blythe Boulevard, Charlotte, NC 28203, USA
FEBS Lett 582:1829-34. 2008..These results provide novel insights into the effects of chronic ethanol consumption on hepatic heme biosynthesis and porphyrias...
Serum alpha-fetoprotein levels in patients with advanced hepatitis C: results from the HALT-C TrialAdrian M Di Bisceglie
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saint Louis University School of Medicine, 3635 Vista Avenue, St Louis, MO 63110, USA
J Hepatol 43:434-41. 2005..We assessed serum AFP among patients with chronic hepatitis C and advanced fibrosis to establish predictors of AFP elevations and changes with antiviral therapy...
Hepatotoxicity due to extracts of Chinese green tea (Camellia sinensis): a growing concernAdnan Javaid
J Hepatol 45:334-5; author reply 335-6. 2006
Benefits of chronic plasmapheresis and intravenous heme-albumin in erythropoietic protoporphyria after orthotopic liver transplantationKhoa D Do
The Department of Medicine, The University of Massachusetts Medical School, and University of Massachusetts Memorial Health Care, Worcester, MA 01655, USA
Transplantation 73:469-72. 2002..We conclude that plasmapheresis and heme-albumin are of benefit in EPP complicated by hepatotoxicity before and after liver transplantation...
Research Grants
- REGULATION OF HEPATIC HEME METABOLISMHERBERT BONKOVSKY; Fiscal Year: 2007..the molecular mechanisms that mediate heme regulation of ALAS-1 and HO-1 are similar in avian, human, and murine hepatocytes in culture or in intact organisms. ..
