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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2004-9-27
pubmed:abstractText
Heterozygous coding mutations in the melanocortin 4 receptor gene (MC4R) are the most common genetic causes of severe human obesity identified to date. To determine whether MC4R has a role in causing severe obesity in Pima Indians, we sequenced the coding region of this gene in 426 full-heritage, non-first-degree related, adult Pima Indians (300 severely obese and 126 nondiabetic nonobese control subjects). Three coding variations were detected as heterozygotes only in severely obese subjects. One variation, detected in three obese subjects, was a novel single-base insertion (A) at nucleotide 100, and it predicted a frameshift and premature STOP at codon 37. The second variant, detected in 10 obese subjects, predicted a previously identified arginine-to-glutamine substitution at codon 165, and the third variant, detected in one obese subject, predicted a novel glycine-to-serine substitution at codon 231. Three polymorphisms were also identified in the 5' untranslated region, but these variants were detected in both obese and lean subjects and had similar allele frequencies. We conclude that variations in MC4R may account for a small portion of obesity in Pima Indians, but they do not explain the overall high prevalence of obesity in this Native American population.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0012-1797
pubmed:author
pubmed:issnType
Print
pubmed:volume
53
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2696-9
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Melanocortin 4 receptor gene variation is associated with severe obesity in Pima Indians.
pubmed:affiliation
Clinical Diabetes and Nutrition Section, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, 4212 N. 16th St., Phoenix, AZ 85016, USA.
pubmed:publicationType
Journal Article