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Burningham TA, Day LW. American Indian and Alaska Native Digestive Health: Challenges, Opportunities, and a Path Forward. Clin Gastroenterol Hepatol 2023; 21:3203-3208. [PMID: 38007243 DOI: 10.1016/j.cgh.2023.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Indexed: 11/27/2023]
Affiliation(s)
- Tyson A Burningham
- Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Lukejohn W Day
- Division of Gastroenterology, University of California, San Francisco, Zuckerberg San Francisco General Hospital and Trauma Center, San Francisco, California
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Burningham TA, Day LW. American Indian and Alaska Native Digestive Health: Challenges, Opportunities, and a Path Forward. Gastroenterology 2023; 165:1318-1322. [PMID: 37981353 DOI: 10.1053/j.gastro.2023.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Affiliation(s)
- Tyson A Burningham
- Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Lukejohn W Day
- Division of Gastroenterology, University of California, San Francisco, and, Zuckerberg San Francisco General Hospital and Trauma Center, San Francisco, California
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Muhammad AG, Hansen FO, Gantzel RH, Rex KF, Villadsen GE, Grønbæk H, Pedersen ML. Non-alcoholic fatty liver disease in patients with type 2 diabetes in Greenland: a register-based cross-sectional study. Int J Circumpolar Health 2022; 81:2065755. [PMID: 35440282 PMCID: PMC9037206 DOI: 10.1080/22423982.2022.2065755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide due to its close association to the metabolic syndrome of type 2 diabetes mellitus (T2DM), obesity and insulin resistance. However, the prevalence and severity of NAFLD in Greenland remain unexplored. We aimed to estimate the prevalence of liver steatosis and fibrosis among Greenlanders and Danes with T2DM living in Greenland using biochemical surrogate markers. We included 1409 Greenlanders and 182 Danes with T2DM in this register-based cross-sectional study. Greenlanders had higher BMI and plasma lipid levels and lower HbA1c levels compared with Danes (p<0.05). Their median alanine aminotransferase (ALAT) levels were similar. However, more Greenlanders had elevated ALAT levels (20.5% vs. 11.5%, p<0.05). Greenlanders had lower FIB-4 scores than Danes, 0.91 (IQR: 0.66–1.27) vs. 0.97 (IQR: 0.78–1.34), without difference in FIB-4 score categories (p=0.27). The prevalence of advanced fibrosis was low in both populations (1.7–2.6%). In conclusion, Greenlanders with T2DM had better glycaemic control despite higher BMI and plasma lipids. A larger proportion of Greenlanders had elevated plasma ALAT levels, while FIB-4 scores were lower than Danes. These findings suggest that Greenlanders with T2DM may be less likely to develop liver complications than Danes with T2DM in Greenland.
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Affiliation(s)
- Abdullah Ghassan Muhammad
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Steno Diabetes Center Greenland, Nuuk, Greenland
| | - Frederik Orm Hansen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Steno Diabetes Center Greenland, Nuuk, Greenland
| | - Rasmus Hvidbjerg Gantzel
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | | | - Gerda Elisabeth Villadsen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Henning Grønbæk
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Michael Lynge Pedersen
- Steno Diabetes Center Greenland, Nuuk, Greenland.,Greenland Center for Health Research, Institute of Health and Nature, University of Greenland, Nuuk, Greenland
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Chahal D, Marquez V, Hussaini T, Kim P, Chung SW, Segedi M, Chartier-Plante S, Scudamore CH, Erb SR, Salh B, Yoshida EM. End stage liver disease etiology & transplantation referral outcomes of major ethnic groups in British Columbia, Canada: A cohort study. Medicine (Baltimore) 2021; 100:e27436. [PMID: 34678872 PMCID: PMC8542110 DOI: 10.1097/md.0000000000027436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 09/17/2021] [Indexed: 01/15/2023] Open
Abstract
Liver disease etiology and transplantation outcomes may vary by ethnicity. We aimed to determine if disparities exist in our province.We reviewed the provincial database for liver transplant referrals. We stratified cohorts by ethnicity and analyzed disease etiology and outcomes.Four thousand nine hundred sixteen referrals included 220 South Asians, 413 Asians, 235 First Nations (Indigenous), and 2725 Caucasians. Predominant etiologies by ethnicity included alcohol (27.4%) and primary sclerosing cholangitis (PSC) (8.8%) in South Asians, hepatitis B (45.5%) and malignancy (13.9%) in Asians, primary biliary cholangitis (PBC) (33.2%) and autoimmune hepatitis (AIH) (10.8%) in First Nations, and hepatitis C (35.9%) in Caucasians. First Nations had lowest rate of transplantation (30.6%, P = .01) and highest rate of waitlist death (10.6%, P = .03). Median time from referral to transplantation (268 days) did not differ between ethnicities (P = .47). Likelihood of transplantation increased with lower body mass index (BMI) (hazard ratio [HR] 0.99, P = .03), higher model for end stage liver disease (MELD) (HR 1.02, P < .01), or fulminant liver failure (HR 9.47, P < .01). Median time from referral to ineligibility status was 170 days, and shorter time was associated with increased MELD (HR 1.01, P < .01), increased age (HR 1.01, P < .01), fulminant liver failure (HR 2.56, P < .01) or South Asian ethnicity (HR 2.54, P < .01). Competing risks analysis revealed no differences in time to transplant (P = .66) or time to ineligibility (P = .91) but confirmed increased waitlist death for First Nations (P = .04).We have noted emerging trends such as alcohol related liver disease and PSC in South Asians. First Nations have increased autoimmune liver disease, lower transplantation rates and higher waitlist deaths. These data have significance for designing ethnicity specific interventions.
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Affiliation(s)
- Daljeet Chahal
- Division of Gastroenterology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Vladimir Marquez
- Division of Gastroenterology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Trana Hussaini
- Faculty of Pharmaceutical Sciences, University of British Columbia, British Columbia, Canada
| | - Peter Kim
- Department of Surgery, Section of Hepatobiliary Pancreatic Surgery, University of British Columbia and the Liver Transplant Program, Vancouver General Hospital, British Columbia, Canada
| | - Stephen W. Chung
- Department of Surgery, Section of Hepatobiliary Pancreatic Surgery, University of British Columbia and the Liver Transplant Program, Vancouver General Hospital, British Columbia, Canada
| | - Maja Segedi
- Department of Surgery, Section of Hepatobiliary Pancreatic Surgery, University of British Columbia and the Liver Transplant Program, Vancouver General Hospital, British Columbia, Canada
| | - Stephanie Chartier-Plante
- Department of Surgery, Section of Hepatobiliary Pancreatic Surgery, University of British Columbia and the Liver Transplant Program, Vancouver General Hospital, British Columbia, Canada
| | - Charles H. Scudamore
- Department of Surgery, Section of Hepatobiliary Pancreatic Surgery, University of British Columbia and the Liver Transplant Program, Vancouver General Hospital, British Columbia, Canada
| | - Siegfried R. Erb
- Division of Gastroenterology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Baljinder Salh
- Division of Gastroenterology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Eric M. Yoshida
- Division of Gastroenterology, University of British Columbia, Vancouver, British Columbia, Canada
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Fedrizzi RS, Coral GP, Mattos AAD, Mattos ÂZD, Tovo CV. EVALUATION OF PATIENTS WITH AUTOIMMUNE HEPATITIS IN A SPECIALIZED OUTPATIENT CLINIC IN SOUTHERN BRAZIL. ARQUIVOS DE GASTROENTEROLOGIA 2021; 57:361-365. [PMID: 33237214 DOI: 10.1590/s0004-2803.202000000-69] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is a chronic liver disease, characterized by necroinflammation and autoimmune etiology. Studies evaluating the characteristics of patients with AIH are scarce in Brazil. OBJECTIVE Our objective was to evaluate the profile of patients with AIH in a specialized center in Southern Brazil and to verify factors related to treatment response. METHODS this was a retrospective cohort study, which analyzed demographic, epidemiological, clinical, laboratory, and histologic data. Patients with AIH diagnosed according to the criteria of the International Autoimmune Hepatitis Group (IAIHG) were included. In liver biopsies, the degree of fibrosis, histological activity, presence of hepatocyte rosettes, plasma cell infiltrates, and confluent necrosis were evaluated. In the statistical analysis, the significance level was 5%. RESULTS Forty adults patients diagnosed with AIH were included. The evaluated population predominantly consisted of women (75.0%) and the average age at diagnosis was 44.2 years. The association with extrahepatic autoimmune diseases occurred in 20.0% of cases. Clinically, 35.0% of patients presented with acute onset hepatitis, 37.5% with cirrhosis, and 27.5% with other forms of presentation. The most common clinical manifestation was jaundice (47.5%). Thirty-five patients were treated, and of these, 97.1% used prednisone combined with azathioprine. The average treatment time was 2.7 years. Response to treatment was complete or partial in 30 (85.7%) and absent in 5 (14.3%) patients. There was no statistically significant difference when evaluating response to treatment in relation to forms of presentation, histological findings, and the presence of autoantibodies. Regarding fibrosis, regression was observed in 18.75% of the cases. CONCLUSION Most patients with AIH were young at presentation and of female sex. The association with extrahepatic autoimmune diseases and cirrhosis at presentation was seen in a considerable proportion of patients. Treatment was effective, but there were no clinical, histological or serological parameters capable of predicting treatment response.
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Affiliation(s)
- Renata S Fedrizzi
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Gabriela P Coral
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Angelo A de Mattos
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Ângelo Z de Mattos
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
| | - Cristiane V Tovo
- Universidade Federal de Ciências da Saúde de Porto Alegre, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
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Noronha L, FitzGerald E, Pierce JR. Outcomes of Patients Hospitalized for Severe Acute Alcoholic Hepatitis. South Med J 2019; 112:363-368. [PMID: 31282964 DOI: 10.14423/smj.0000000000000999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Severe acute alcoholic hepatitis is a serious condition in individuals who consume significant quantities of alcohol. We aimed to identify risk factors for short-term mortality with this illness. METHODS Patients with severe acute alcoholic hepatitis admitted to our academic medical center from 2010 to 2012 were identified. Demographic features, laboratory values, and patient outcomes were recorded. In-hospital mortality and transfer to inpatient hospice were combined to calculate overall inpatient mortality. RESULTS A total of 251 hospitalizations of 191 patients were identified. The average age was 43.1 years (standard deviation 9.55). Most patients were men (80.6%). Compared with all adult patients admitted to internal medicine services during the same period, patients self-reporting Native American and Hispanic race/ethnicity were overrepresented (11.1% vs 34.0% and 14.8% vs 27.7%, χ2 P < 0.0001). In-hospital mortality was 20.3%. Another 10% of patients were transferred to inpatient hospice facilities. In the multivariate analysis, higher overall inpatient mortality was associated with an admission bilirubin >20 mg/dL (odds ratio 4.59). Of the patients, 11.9% were readmitted with a complication within 30 days-most commonly septic shock. Of the readmitted patients, the overall inpatient mortality was 86.2%. CONCLUSIONS This study confirms the severity of illness among patients with severe acute alcoholic hepatitis. Patients with the highest total bilirubin levels on admission had the highest overall inpatient mortality. Readmission was a strong predictor of overall in-hospital mortality.
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Affiliation(s)
- Leonard Noronha
- From the Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque
| | - Erin FitzGerald
- From the Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque
| | - J Rush Pierce
- From the Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque
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Gachupin FC, Harbaugh R, Amarillas A, Cupis F, Lockwood J, Tautolo SJ. Addressing Hepatitis C within a Southwest Tribal Community. Ethn Dis 2018; 28:549-554. [PMID: 30405299 DOI: 10.18865/ed.28.4.549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Objective The objective was to identify and treat segments of the local population at greatest risk for viral hepatitis C (HCV) infections. Design The tribal-based HCV initiatives included community involvement and outreach and HCV data were mined and analyzed. Medical records were reviewed, and new HCV tribal health policies and procedures were developed. Results A total of 251 tribal members (63.7% male) were diagnosed with HCV and had a positive confirmatory test between the years 2009 and 2014. Through community-based outreach efforts, 85 HCV patients were successfully contacted for education, field-testing, referral and follow-up, an increase of more than 300%. Conclusions The tribe increased ways to monitor HCV risk factors and communicable disease pathways.
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Affiliation(s)
- Francine C Gachupin
- University of Arizona, College of Medicine, Department of Family and Community Medicine, Tucson, Arizona
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Minuk GY, Pollock G, Uhanova J. Adult idiopathic cholestasis: a condition more common in the Canadian Inuit? Int J Circumpolar Health 2017; 76:1388104. [PMID: 29034810 PMCID: PMC5645770 DOI: 10.1080/22423982.2017.1388104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Despite extensive investigations, some patients have no identifiable cause for their cholestatic liver enzyme abnormalities. The aim of this study was to document the clinical, laboratory, radiologic and histologic features of adult patients with idiopathic cholestasis (AIC). A computerised database of referred patients to a tertiary care hospital outpatient department for assessment of hepatobiliary disorders between 2005 and 2015 was employed to identify and describe features associated with AIC. Of 6,560 patient referrals, sufficient documentation to warrant a diagnosis of AIC was present in 17 (0.26%) cases. Of the 17, a disproportionate number were Canadian Inuit (7/60, 12% Inuit referrals vs. 10/6,500, 0.16% non-Inuit referrals, p<0.0001). The median age of the 17 subjects was 57 years and nine (53%) were female. Clinical and/or laboratory evidence of autoimmune disorders was present in six (35%) cases. Clinical features of hepatic decompensation, radiologic findings in keeping with cirrhosis and histologic confirmation of cirrhosis were present in 47%, 31% and 42% of individuals, respectively. There were no significant improvements in cholestatic liver enzymes and function tests in those treated with ursodiol and/or immunomodulants (n=7) compared to those left untreated (n=10). In conclusion, AIC is a rare condition diagnosed by exclusion. It appears to be more common in the Canadian Inuit population and those with autoimmune disorders. Advanced liver disease is a frequent finding at presentation. Intervention with ursodiol and/or immunomodulants does not appear to be of therapeutic value.
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Affiliation(s)
- Gerald Y Minuk
- a Section of Hepatology, Department of Medicine , College of Medicine, University of Manitoba , Winnipeg , Canada.,b Department of Pharmacology and Therapeutics , College of Medicine, University of Manitoba , Winnipeg , Canada
| | - Galia Pollock
- a Section of Hepatology, Department of Medicine , College of Medicine, University of Manitoba , Winnipeg , Canada
| | - Julia Uhanova
- a Section of Hepatology, Department of Medicine , College of Medicine, University of Manitoba , Winnipeg , Canada
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Cunningham JK, Solomon TA, Muramoto ML. Alcohol use among Native Americans compared to whites: Examining the veracity of the 'Native American elevated alcohol consumption' belief. Drug Alcohol Depend 2016; 160:65-75. [PMID: 26868862 DOI: 10.1016/j.drugalcdep.2015.12.015] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 12/10/2015] [Accepted: 12/12/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND This study uses national survey data to examine the veracity of the longstanding belief that, compared to whites, Native Americans (NA) have elevated alcohol consumption. METHODS The primary data source was the National Survey on Drug Use and Health (NSDUH) from 2009 to 2013: whites (n=171,858) and NA (n=4,201). Analyses using logistic regression with demographic covariate adjustment were conducted to assess differences in the odds of NA and whites being alcohol abstinent, light/moderate drinkers (no binge/heavy consumption), binge drinkers (5+ drinks on an occasion 1-4 days), or heavy drinkers (5+ drinks on an occasion 5+ days) in the past month. Complementary alcohol abstinence, light/moderate drinking and excessive drinking analyses were conducted using Behavioral Risk Factor Surveillance System (BRFSS) data from 2011 to 2013: whites (n=1,130,658) and NA (n=21,589). RESULTS In the NSDUH analyses, the majority of NA, 59.9% (95% CI: 56.7-63.1), abstained, whereas a minority of whites, 43.1% (CI: 42.6-43.6), abstained-adjusted odds ratio (AOR): 0.64 (CI: 0.56-0.73). Approximately 14.5% (CI: 12.0-17.4) of NA were light/moderate-only drinkers, versus 32.7% (CI: 32.2-33.2) of whites (AOR: 1.90; CI: 1.51-2.39). NA and white binge drinking estimates were similar-17.3% (CI: 15.0-19.8) and 16.7% (CI: 16.4-17.0), respectively (AOR: 1.00; CI: 0.83-1.20). The two populations' heavy drinking estimates were also similar-8.3% (CI: 6.7-10.2) and 7.5% (CI: 7.3-7.7), respectively (AOR: 1.06; CI: 0.85-1.32). Results from the BRFSS analyses generally corroborated those from NSDUH. CONCLUSIONS In contrast to the 'Native American elevated alcohol consumption' belief, Native Americans compared to whites had lower or comparable rates across the range of alcohol measures examined.
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Affiliation(s)
- James K Cunningham
- Department of Family and Community Medicine, The University of Arizona, 1450 N. Cherry Avenue, Tucson, AZ 85719, United States; Native American Research and Training Center, The University of Arizona, 1642 East Helen Street, Tucson, AZ 85719, United States.
| | - Teshia A Solomon
- Department of Family and Community Medicine, The University of Arizona, 1450 N. Cherry Avenue, Tucson, AZ 85719, United States; Native American Research and Training Center, The University of Arizona, 1642 East Helen Street, Tucson, AZ 85719, United States.
| | - Myra L Muramoto
- Department of Family and Community Medicine, The University of Arizona, 1450 N. Cherry Avenue, Tucson, AZ 85719, United States.
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Distribution of Hepatitis C Risk Factors and HCV Treatment Outcomes among Central Canadian Aboriginal. Can J Gastroenterol Hepatol 2016; 2016:8987976. [PMID: 27446875 PMCID: PMC4904644 DOI: 10.1155/2016/8987976] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 11/07/2015] [Indexed: 12/12/2022] Open
Abstract
Background. Aboriginal Canadians face many lifestyle risk factors for hepatitis C exposure. Methods. An analysis of Ottawa Hospital Viral Hepatitis Clinic (Ottawa, Canada) patients between January 2000 and August 2013 was performed. HCV infection risk factors and HCV treatment outcomes were assessed. Socioeconomic status markers were based on area-level indicators linked to postal codes using administrative databases. Results. 55 (2.8%) Aboriginal and 1923 (97.2%) non-Aboriginal patients were evaluated. Aboriginals were younger (45.6 versus 49.6 years, p < 0.01). The distribution of gender (63.6% versus 68.3% male), HIV coinfection (9.1% versus 8.1%), advanced fibrosis stage (29.2% versus 28.0%), and SVR (56.3% versus 58.9%) was similar between groups. Aboriginals had a higher number of HCV risk factors, (mean 4.2 versus 3.1, p < 0.001) with an odds ratio of 2.5 (95% confidence interval: 1.4-4.4) for having 4+ risk factors. This was not explained after adjustment for income, social deprivation, and poor housing. Aboriginal status was not related to SVR. Aboriginals interrupted therapy more often due to loss to follow-up, poor adherence, and substance abuse (25.0% versus 4.6%). Conclusion. Aboriginal Canadians have higher levels of HCV risk factors, even when adjusting for socioeconomic markers. Despite facing greater barriers to care, SVR rates were comparable with non-Aboriginals.
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A Northern contaminant mixture impairs pancreas function in obese and lean JCR rats and inhibits insulin secretion in MIN6 cells. Toxicology 2015; 334:81-93. [DOI: 10.1016/j.tox.2015.06.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/04/2015] [Accepted: 06/05/2015] [Indexed: 01/20/2023]
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Suryaprasad A, Byrd KK, Redd JT, Perdue DG, Manos MM, McMahon BJ. Mortality caused by chronic liver disease among American Indians and Alaska Natives in the United States, 1999-2009. Am J Public Health 2014; 104 Suppl 3:S350-8. [PMID: 24754616 DOI: 10.2105/ajph.2013.301645] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVES We compared chronic liver disease (CLD) mortality from 1999 to 2009 between American Indians and Alaska Natives (AI/ANs) and Whites in the United States after improving CLD case ascertainment and AI/AN race classification. METHODS We defined CLD deaths and causes by comprehensive death certificate-based diagnostic codes. To improve race classification, we linked US mortality data to Indian Health Service enrollment records, and we restricted analyses to Contract Health Service Delivery Areas and to non-Hispanic populations. We calculated CLD death rates (per 100,000) in 6 geographic regions. We then described trends using linear modeling. RESULTS CLD mortality increased from 1999 to 2009 in AI/AN persons and Whites. Overall, the CLD death rate ratio (RR) of AI/AN individuals to Whites was 3.7 and varied by region. The RR was higher in women (4.7), those aged 25 to 44 years (7.4), persons residing in the Northern Plains (6.4), and persons dying of cirrhosis (4.0) versus hepatocellular carcinoma (2.5), particularly those aged 25 to 44 years (7.7). CONCLUSIONS AI/AN persons had greater CLD mortality, particularly from premature cirrhosis, than Whites, with variable mortality by region. Comprehensive prevention and care strategies are urgently needed to stem the CLD epidemic among AI/AN individuals.
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Affiliation(s)
- Anil Suryaprasad
- Anil Suryaprasad and Kathy K. Byrd are with the Division of Viral Hepatitis; National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention; Centers for Disease Control and Prevention (CDC); US Department of Health and Human Services; Atlanta, GA. John T. Redd is with the Santa Fe Public Health Service Indian Hospital, Indian Health Service, US Department of Health and Human Services, Santa Fe, NM. David G. Perdue is with the American Indian Cancer Foundation and Minnesota Gastroenterology PA, Minneapolis. M. Michele Manos is with the Kaiser Permanente Division of Research, Oakland, CA. Brian J. McMahon is with the Arctic Investigations Program, Division of Preparedness and Emerging Infections, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Anchorage, AL
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Mehta R, Birerdinc A, Younossi ZM. Host genetic variants in obesity-related nonalcoholic fatty liver disease. Clin Liver Dis 2014; 18:249-67. [PMID: 24274878 DOI: 10.1016/j.cld.2013.09.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a complex disease. The considerable variability in the natural history of the disease suggests an important role for genetic variants in the disease development and progression. There is evidence based on genome-wide association studies and/or candidate gene studies that genetic polymorphisms underlying insulin signaling, lipid metabolism, oxidative stress, fibrogenesis, and inflammation can predispose individuals to NAFLD. This review highlights some of the genetic variants in NAFLD.
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Affiliation(s)
- Rohini Mehta
- Betty and Guy Beatty Center for Integrated Research, Center for Liver Disease, Inova Health System, Claude Moore Building, 3300 Gallows Road, Falls Church, VA 22042, USA
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Czaja AJ. Autoimmune hepatitis in diverse ethnic populations and geographical regions. Expert Rev Gastroenterol Hepatol 2013; 7:365-85. [PMID: 23639095 DOI: 10.1586/egh.13.21] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Autoimmune hepatitis has diverse clinical phenotypes and outcomes in ethnic groups within a country and between countries, and these differences may reflect genetic predispositions, indigenous etiological agents, pharmacogenomic mechanisms and socioeconomic reasons. In the USA, African-American patients have cirrhosis more commonly, treatment failure more frequently and higher mortality than white American patients. Survival is poorest in Asian-American patients. Autoimmune hepatitis in other countries is frequently associated with genetic predispositions that may favor susceptibility to indigenous etiological agents. Cholestatic features influence treatment response; acute-on-chronic liver disease increases mortality and socioeconomic and cultural factors affect prognosis. Ethnic-based deviations from classical phenotypes and the frequency of late-stage disease can complicate the diagnosis and management of autoimmune hepatitis in non-white populations.
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Affiliation(s)
- Albert J Czaja
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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Hepatitis C virus in American Indian/Alaskan Native and Aboriginal peoples of North America. Viruses 2013; 4:3912-31. [PMID: 23342378 PMCID: PMC3528296 DOI: 10.3390/v4123912] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Liver diseases, such as hepatitis C virus (HCV), are “broken spirit” diseases. The prevalence of HCV infection for American Indian/Alaskan Native (AI/AN) in the United States and Canadian Aboriginals varies; nonetheless, incidence rates of newly diagnosed HCV infection are typically higher relative to non-indigenous people. For AI/AN and Aboriginal peoples risk factors for the diagnosis of HCV can reflect that of the general population: predominately male, a history of injection drug use, in midlife years, with a connection with urban centers. However, the face of the indigenous HCV infected individual is becoming increasingly female and younger compared to non-indigenous counterparts. Epidemiology studies indicate that more effective clearance of acute HCV infection can occur for select Aboriginal populations, a phenomenon which may be linked to unique immune characteristics. For individuals progressing to chronic HCV infection treatment outcomes are comparable to other racial cohorts. Disease progression, however, is propelled by elevated rates of co-morbidities including type 2 diabetes and alcohol use, along with human immunodeficiency virus (HIV) co-infection relative to non-indigenous patients. Historical and personal trauma has a major role in the participation of high risk behaviors and associated diseases. Although emerging treatments provide hope, combating HCV related morbidity and mortality will require interventions that address the etiology of broken spirit diseases.
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Osiowy C, Simons BC, Rempel JD. Distribution of viral hepatitis in indigenous populations of North America and the circumpolar Arctic. Antivir Ther 2013; 18:467-73. [DOI: 10.3851/imp2597] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2012] [Indexed: 10/26/2022]
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Sheikh MY, Atla PR, Ameer A, Sadiq H, Sadler PC. Seroprevalence of Hepatitis B and C Infections among Healthy Volunteer Blood Donors in the Central California Valley. Gut Liver 2012; 7:66-73. [PMID: 23423771 PMCID: PMC3572322 DOI: 10.5009/gnl.2013.7.1.66] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 05/17/2012] [Accepted: 06/10/2012] [Indexed: 12/29/2022] Open
Abstract
Background/Aims The Central California Valley has a diverse population with significant proportions of Hispanics and Asians. This cross-sectional study was conducted to evaluate the prevalence of hepatitis B virus (HBV) and hepatitis C virus (HCV) in healthy blood donors in the Valley. Methods A total of 217,738 voluntary blood donors were identified between 2006 and 2010 (36,795 first-time donors; 180,943 repeat donors). Results Among the first-time donors, the HBV and HCV prevalence was 0.28% and 0.52%, respectively. Higher HBV prevalence seen in Asians (3%) followed by Caucasians (0.05%), African Americans (0.15%), and Hispanics (0.05%). Hmong had a HBV prevalence of 7.63% with a peak prevalence of 8.76% among the 16- to 35-year-old age group. Highest HCV prevalence in Native Americans (2.8) followed by Caucasians (0.59%), Hispanics (0.45%), African Americans (0.38%), and Asians (0.2%). Conclusions Ethnic disparities persist with regard to the prevalence of HBV and HCV in the Central California Valley. The reported prevalence may be an underestimate because our study enrolled healthy volunteer blood donors only. The development of aggressive public health measures to evaluate the true prevalence of HBV and HCV and to identify those in need of HBV and HCV prevention measures and therapy is critically important.
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Affiliation(s)
- Muhammad Y Sheikh
- Division of Gastroenterology & Hepatology, University of California San Francisco Fresno Medical Education Program, Fresno, CA, USA. ; Department of Medicine, Community Regional Medical Center, University of California San Francisco Fresno Medical Education Program, Fresno, CA, USA
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Haren MT, Li M, Petkov J, McDermott RA. Alcohol, metabolic risk and elevated serum gamma-glutamyl transferase (GGT) in Indigenous Australians. BMC Public Health 2010; 10:454. [PMID: 20682033 PMCID: PMC2920283 DOI: 10.1186/1471-2458-10-454] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Accepted: 08/03/2010] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND The interaction between overweight/obesity and alcohol intake on liver enzyme concentrations have been demonstrated. No studies have yet examined the interaction between metabolic syndrome or multiple metabolic risk factors and alcohol intake on liver enzymes. The aim of this study was to examine if alcohol consumption modifies the effect of metabolic risk on elevated serum GGT in Indigenous Australians. METHODS Data were from N = 2609 Indigenous Australians who participated in a health screening program in rural far north Queensland in 1999-2000 (44.5% response rate). The individual and interactive effects of metabolic risk and alcohol drinking on elevated serum GGT concentrations (>or=50 U/L) were analyzed using logistic regression. RESULTS Overall, 26% of the population had GGT>or=50 U/L. Elevated GGT was associated with alcohol drinking (moderate drinking: OR 2.3 [95%CI 1.6 - 3.2]; risky drinking: OR 6.0 [4.4 - 8.2]), and with abdominal obesity (OR 3.7 [2.5 - 5.6]), adverse metabolic risk cluster profile (OR 3.4 [2.6 - 4.3]) and metabolic syndrome (OR 2.7 [2.1 - 3.5]) after adjustment for age, sex, ethnicity, smoking, physical activity and BMI. The associations of obesity and metabolic syndrome with elevated GGT were similar across alcohol drinking strata, but the association of an adverse metabolic risk cluster profile with elevated GGT was larger in risky drinkers (OR 4.9 [3.7 - 6.7]) than in moderate drinkers (OR 2.8 [1.6 - 4.9]) and abstainers (OR 1.6 [0.9 - 2.8]). CONCLUSIONS In this Indigenous population, an adverse metabolic profile conferred three times the risk of elevated GGT in risky drinkers compared with abstainers, independent of sex and ethnicity. Community interventions need to target both determinants of the population's metabolic status and alcohol consumption to reduce the risk of elevated GGT.
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Affiliation(s)
- Matthew T Haren
- Spencer Gulf Rural Health School (SGRHS), University of South Australia and The University of Adelaide, Whyalla Norrie SA, Australia
- Centre for Rural Health and Community Development (CRHaCD), University of South Australia, Whyalla Norrie SA, Australia
- Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide SA, Australia
| | - Ming Li
- Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide SA, Australia
| | - John Petkov
- Centre for Rural Health and Community Development (CRHaCD), University of South Australia, Whyalla Norrie SA, Australia
- Applied Statistics Unit, Centre for Regional Engagement, University of South Australia, Mount Gambier SA, Australia
| | - Robyn A McDermott
- Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide SA, Australia
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Pimentel-Nunes P, Roncon-Albuquerque R, Gonçalves N, Fernandes-Cerqueira C, Cardoso H, Bastos RP, Marques M, Marques C, Alexandre Sarmento J, Costa-Santos C, Macedo G, Pestana M, Dinis-Ribeiro M, Leite-Moreira AF. Attenuation of toll-like receptor 2-mediated innate immune response in patients with alcoholic chronic liver disease. Liver Int 2010; 30:1003-11. [PMID: 20492495 DOI: 10.1111/j.1478-3231.2010.02251.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Alcoholic chronic liver disease (ACLD) is a common form of acquired immunodeficiency. AIM To evaluate ex vivo toll-like receptor (TLR) 2 and TLR4 innate immune response in stable ACLD. METHODS Blood was collected from 26 males with stable ACLD and from 17 controls. Serum was used for lipopolysaccharide (LPS), sCD14, LPS-binding protein (LBP), tumour necrosis factor-alpha (TNF-alpha) and interleukin 10 (IL-10) quantification. Peripheral blood monocytes (PBM) protein expression of TLR2 and TLR4 was determined by flow cytometry. Primary cultures of anti-CD11b positive selected PBM were stimulated with the TLR2/TLR6 ligand zymosan (Zym), with TLR2/TLR1 ligand lipopeptide (Lp) and with TLR4 ligand LPS. PBM TLR1, TLR2, TLR4, TLR6, MD2, CD14, TNF-alpha and IL-10 gene expression was evaluated by reverse transcription-polymerase chain reaction. RESULTS Stable ACLD patients showed increased circulating LPS (+22.5+/-4.1%), LBP (+60.6+/-12.2%) and sCD14 (+23.5+/-4.6%), with no differences in TNF-alpha and IL-10. Zym and Lp, but not LPS, induced TNF-alpha production by monocytes was blunted in ACLD (-66+/-20.4% Zym; -40.1+/-13.5% Lp; P<0.05). Basal TNF-alpha mRNA expression was decreased in PBM from ACLD patients (-50.1+/-21.0%; P<0.05), with no significant differences in the other studied genes. Results were similar in Child-Pugh A and B/C patients. CONCLUSIONS Patients with stable ACLD show an attenuation of TLR2-mediated innate immune response in PBM, which may represent an important mechanism for acquired immunodeficiency. This was neither related with decreased TLR2 or its co-receptors expression nor with impaired TLR4 activation, being already present in the early stages of disease.
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Affiliation(s)
- Pedro Pimentel-Nunes
- Department of Physiology, Cardiovascular Research & Development Unit, Faculty of Medicine, University of Porto, Porto, Portugal
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Czaja AJ, Manns MP. Advances in the diagnosis, pathogenesis, and management of autoimmune hepatitis. Gastroenterology 2010; 139:58-72.e4. [PMID: 20451521 DOI: 10.1053/j.gastro.2010.04.053] [Citation(s) in RCA: 189] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2010] [Revised: 04/27/2010] [Accepted: 04/30/2010] [Indexed: 12/13/2022]
Abstract
Autoimmune hepatitis (AIH) is characterized by chronic inflammation of the liver, interface hepatitis (based on histologic examination), hypergammaglobulinemia, and production of autoantibodies. Many clinical and basic science studies have provided important insights into the pathogenesis and treatment of AIH. Transgenic mice that express human antigens and develop autoantibodies, liver-infiltrating CD4(+) T cells, liver inflammation, and fibrosis have been developed as models of AIH. AIH has been associated with autoantibodies against members of the cytochrome P450 superfamily of enzymes, transfer RNA selenocysteine synthase, formiminotransferase cyclodeaminase, and the uridine diphosphate glucuronosyltransferases, whereas alleles such as DRB1*0301 and DRB1*0401 are genetic risk factors in white North American and northern European populations. Deficiencies in the number and function of CD4(+)CD25(+) (regulatory) T cells disrupt immune homeostasis and might be corrected as a therapeutic strategy. Treatment can be improved by continuing corticosteroid therapy until normal liver test results and normal liver tissue are within normal limits, instituting ancillary therapies to prevent drug-related side effects, identifying problematic patients early, and providing long-term maintenance therapy after patients experience a first relapse. Calcineurin inhibitors and mycophenolate mofetil are potential salvage therapies, and reagents such as recombinant interleukin-10, abatacept, and CD3-specific antibodies are feasible as therapeutics. Liver transplantation is an effective salvage therapy, even in the elderly, and AIH must be considered in all patients with graft dysfunction after liver transplantation. Identification of the key defects in immune homeostasis and antigen targets will direct new therapies.
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Affiliation(s)
- Albert J Czaja
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA.
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Czaja AJ, Bayraktar Y. Non-classical phenotypes of autoimmune hepatitis and advances in diagnosis and treatment. World J Gastroenterol 2009; 15:2314-28. [PMID: 19452572 PMCID: PMC2684596 DOI: 10.3748/wjg.15.2314] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Non-classical manifestations of autoimmune hepatitis can delay diagnosis and treatment. Our aims were to describe the clinical phenotypes that can confound the diagnosis, detail scoring systems that can ensure their recognition, and outline advances in treatment that can improve their outcome. Prime source and review articles in English were selected through Medline from 1970-2008 and assimilated into personal libraries spanning 32 years. Acute severe or asymptomatic presentations and atypical histological findings, including centrilobular zone 3 necrosis and concurrent bile duct changes, are compatible with the diagnosis. Cholangiographic abnormalities may be present in children and adults with the disease, and autoimmune hepatitis must be considered in patients without autoantibodies or with antimitochondrial antibodies and no other cholestatic features. Asymptomatic patients frequently become symptomatic; mild disease can progress; and there are no confident indices that justify withholding treatment. Two diagnostic scoring systems with complementary virtues have been developed to evaluate patients with confusing features. Normal liver tests and tissue constitute the optimal end point of treatment, and the first relapse is an indication for long-term azathioprine therapy. Cyclosporine, tacrolimus and mycophenolate mofetil are promising salvage therapies, and budesonide with azathioprine may be a superior frontline treatment. We conclude that the non-classical phenotypes of autoimmune hepatitis can be recognized promptly, diagnosed accurately, and treated effectively.
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