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Diabetes Care, Vol 20, Issue 8 1319-1323, Copyright © 1997 by American Diabetes Association
The Trp64Arg polymorphism of the beta 3-Adrenergic receptor gene. Lack of association with NIDDM and features of insulin resistance syndrome
J Rissanen, J Kuopusjarvi, J Pihlajamaki, R Sipilainen, S Heikkinen, M Vanhala, P Kekalainen, J Kuusisto and M Laakso
Department of Medicine, University of Kuopio, Finland.
OBJECTIVE: To investigate the association of the Trp64Arg polymorphism of
the beta3-adrenergic receptor gene with NIDDM and the features of insulin
resistance syndrome in subjects from eastern Finland. RESEARCH DESIGN AND
METHODS: We determined the prevalence of the Trp64Arg polymorphism of the
beta3-adrenergic receptor gene by restriction fragment length polymorphism
analysis in 110 patients with NIDDM (54 men and 56 women, age 63 +/- 1
years, BMI 30.4 +/- 0.5 kg/m2), in 183 patients with features of insulin
resistance syndrome (103 men and 80 women, age 44 +/- 0 years, BMI 31.1 +/-
0.4 kb/m2), and in 82 normoglycemic control men (age 54 +/- 1 years, BMI
26.3 +/- 0.4 kg/m2). RESULTS: The allele frequency of the Trp64Arg
polymorphism of the beta3-adrenergic receptor gene was similar in patients
with NIDDM, in patients with insulin resistance syndrome, and in control
subjects (0.08, 0.07, and 0.07, respectively; NS). In addition, this
polymorphism was not associated with low resting metabolic rate, abdominal
obesity, increased lipid oxidation, hypertension, or earlier development of
NIDDM as previously described. Furthermore, in 82 normoglycemic male
control subjects the Trp64Arg polymorphism was not associated with insulin
resistance evaluated by the euglycemic-hyperinsulinemic clamp. CONCLUSIONS:
The Trp64Arg polymorphism of the beta 3-adrenergic receptor gene is
unlikely to be a major genetic predisposer to NIDDM or insulin resistance
syndrome in subjects from eastern Finland.

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Copyright © 1997 by the American Diabetes Association.
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