A relationship between migraine and biliary tract disorders: findings in two Swedish samples of elderly twins
December 29th, 2009 Posted by: admin
Nilsson S, Edvinsson L, Malmberg B, Johansson B, Linde M. A relationship between migraine and biliary tract disorders: findings in two Swedish samples of elderly twins. Acta Neurol Scand: DOI: 10.1111/j.1600-0404.2009.01310.x. © 2009 The Authors Journal compilation © 2009 Blackwell Munksgaard.Objectives [ndash] To investigate whether there is a relationship between the clinical occurrence of migraine and biliary tract disorders (BTD) and to study whether there is a genetic influence on such an association.Materials and Methods [ndash] The near lifetime morbidity for migraine and BTD was examined in two Swedish twin-samples: OCTO-Twin (149 MZ and 202 DZ pairs; 234 men, 468 women; 80 years of age or older at inclusion), and the GENDER study (249 unlike-sex DZ-pairs; 70[ndash]80 years of age at inclusion). The diagnosis of BTD was established by perusal of medical records from the last twenty years. The diagnosis of migraine was based on iterated questionnaires and personal interviews.Results [ndash] The odds ratio (OR) of BTD among OCTO-Twin subjects suffering from migraine was 3.5 (1.9[ndash]6.7) in monozygotic pairs and 1.7 (1.0[ndash]2.9) in dizygotic pairs The corresponding figures among the GENDER unlike-sex DZ-pairs was 2.7 (1.6[ndash]4.5). Migraine was associated with female sex and waist circumference.Conclusions [ndash] There is a relationship between the occurrence of migraine and BTD, also when controlling for the fact that both disorders are more frequent in women. The association appears to be partly attributable to genetic influences.
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