Help
Subscribe


GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy

 28 May 2018

Advanced search
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy Profile of Roy Pounder

Home

News  
Journals
Review Articles
Slide Atlas
Video Clips
Online Books
Advanced Digestive Endoscopy
Classical Cases
Conference Diary
PubMed
International GH Links
USA GH Links
National GH Links
National GI Societies
Other Useful Links




Emails on Gastroenterology and Hepatology
the National AIDS Treatment Advocacy Project
Visit the gastroenterology section of the EUMS

News

Strong genetic influence in immune response to HbsAg

Genetic factors have a strong effect on the immune response to hepatitis B surface antigen, according to research published in the current issue of the Lancet.

News image

fiogf49gjkf04

A team from Germany investigated the differential genetic determination of immune responsiveness to hepatitis B surface antigen (HbsAg) and to hepatitis A virus (HAV).

They looked at the effect of the HLA-DRB1 locus and other genetic loci unlinked to HLA.

In the open prospective study, 202 twin pairs were vaccinated with a combined recombinant HBsAg/inactivated hepatitis A vaccine.

Antibodies to HBsAg and HAV were measured and HLA-DRB1 alleles were determined.

Heritability was calculated based on variance of antibody response within pairs.

In addition, model-fitting analyses were conducted to analyze genetic and environmental components of vaccine responses.

Anti-HBs and anti-HAV showed heritabilities of 0·61 and 0·36, respectively.

Genetic effects accounted for 60% of phenotypic variance of anti-HBs immune response.
Lancet
For the anti-HBs immune response, additive genetic effects explained 60% of the phenotypic variance and non-shared environmental effects accounted for 40%.

The heritability of the HBsAg vaccine response, accounted for by the DRB1 locus, was estimated to be 0·25. Therefore, the heritability of other gene loci was 0·36.

Dr Thomas Höhler, of Johannes Gutenberg-University, Mainz, said on behalf of his group, "Genetic factors have a strong effect on the immune response to HBsAg."

"Although genes encoded within the major histocompatibility complex are important for this immune response, more than half the heritability is determined outside this complex.

"Identification of these genes will help us to understand regulation of immune responses to viral proteins," he concluded.

Lancet 2002; 360: 991-5
30 September 2002

Go to top of page Email this page Email this page to a colleague

 28 May 2018 
Therapeutic strategies for HCV
 28 May 2018 
Mesalazine in ulcerative colitis
 28 May 2018 
Technology and management of digestive diseases
 25 May 2018 
Technology to increase colorectal cancer screening
 25 May 2018 
Post‐operative complications in elderly IBD
 25 May 2018 
Colorectal cancer–specific mortality
 24 May 2018 
Alcohol consumption and outcomes in drug-induced liver injury
 24 May 2018 
Patient-reported outcome measures in IBD trials
 24 May 2018 
Precision medicine for tumors
 23 May 2018 
Management of perianal fistulas in Crohn’s disease
 23 May 2018 
Cardiovascular risk in diabetes mellitus with NAFLD
 23 May 2018 
High body mass index is and ulcerative colitis
 22 May 2018 
Worldwide H.pylori prevalence
 22 May 2018 
PPI and risk of stroke
 22 May 2018 
Online tool predicts bowel dysfunction severity prior to anterior resection
 21 May 2018 
PPI use and cognitive decline
 21 May 2018 
Depressive symptoms in IBD youth
 21 May 2018 
Fecal incontinence and quality of life in IBD
 18 May 2018 
Esophageal dilatation in clinical practice 
 17 May 2018 
IBD and later extraintestinal manifestations
 17 May 2018 
Repeat stool DNA testing
 17 May 2018 
IBS and chronic fatigue following GI infection
 16 May 2018 
Factors associated with fecal incontinence
 16 May 2018 
Diagnostic delay in Crohn's disease
 16 May 2018 
Cardiovascular risk in diabetes mellitus with NAFLD
 15 May 2018 
Guidelines for management of Crohn's
 15 May 2018 
New therapies for CDI
 15 May 2018 
Hep B in the Grey Zone
 14 May 2018 
Blood test for the diagnosis of fibrotic NASH
 14 May 2018 
Outcomes at bariatric centers of excellence
 14 May 2018 
Management of perianal fistulas in Crohn’s
 11 May 2018 
Detection of undiagnosed celiac disease
 11 May 2018 
Alcohol consumption and drug-induced liver injury
 10 May 2018 
Colorectal cancer screening
 10 May 2018 
Fibrosis in patients with chronic hepatitis B
 09 May 2018 
Fecal incontinence
 09 May 2018 
Health problems and IBS
 09 May 2018 
Esophageal dilatation in clinical practice 
 07 May 2018 
Omitting antibiotics in uncomplicated acute diverticulitis
 07 May 2018 
Health problems and IBS
 07 May 2018 
Assessment of diminutive colorectal polyps
 04 May 2018 
National Institutes of Health workshop and obesity
 04 May 2018 
Factors associated with fecal incontinence
 04 May 2018 
Colorectal cancer screening and ethnic inequities
 03 May 2018 
Gastrointestinal ultrasound in IBD
 03 May 2018 
Ultransonography in postsurgical recurrence in Crohn's
 02 May 2018 
Symptom assessment in cirrhotic ascites
 02 May 2018 
Hep C antiviral treatment and liver cancer risk
 02 May 2018 
Chronic Hep B
 01 May 2018 
European guidelines on pancreatic cystic neoplasms
 01 May 2018 
Interferon‐free regimens in Hep C
 01 May 2018 
Age at IBD onset and extraintestinal complications
 30 April 2018 
Formula for preterm infants
 30 April 2018 
Primary antibiotic resistance and sequential therapy for H. pylori
 27 April 2018 
Eastern and western practices for endoscopic resection of colorectal lesions
 27 April 2018 
Anxiety scale for chronic esophageal disease
 27 April 2018 
Disease activity in eosinophilic esophagitis
 26 April 2018 
Obesity and physical activity in diverticulosis
 26 April 2018 
Primary sclerosing cholangitis in the USA
 25 April 2018 
Aspirin and pancreatic cancer

Blackwell Publishing


GastroHep.com is a Blackwell Publishing registered trademark
© 2018 Wiley-Blackwell and GastroHep.com and contributors
Privacy Statement
Disclaimer
About Us