Comorbidities Common
in Bipolar Disorder, May Have Genetic Link
(June 8, 2007) -- PITTSBURGH – While the
symptoms of bipolar disorder can be
disabling on their own, most patients with the condition also are afflicted
with a variety of
other psychiatric,
substance use and physical disorders.
These comorbid conditions can complicate treatment and diagnosis. Research
findings on genetic links between bipolar disorder and other conditions and
the incidence of such comorbidities will be presented at the Seventh
International Conference on Bipolar Disorder and will be discussed at a
press briefing at 1:15 p.m., Friday, June 8.
According to Allan H. Young, LEEF Chair, Depression Research, and
professor of psychiatry, University of British Columbia, Vancouver, Canada,
people who have bipolar disorder are at increased risk for other
psychiatric
syndromes including
anxiety disorders,
attention deficit hyperactivity
disorder (ADHD) and
problems with substance use. These psychiatric comorbidities, accompanied by medical comorbidities common in people with
bipolar, including heart disease, cancer, endocrine disorders and autoimmune
disorders, lead to complications, overall poor health and a decreased life
expectancy.
Research presented by Willem A. Nolen, M.D., Ph.D., of the University
Medical Center, University of Groningen, Netherlands, shows that genetic
factors may play a role in the development of comorbidities in people with
bipolar disorder. Researchers observed an increased prevalence of bipolar
disorder among twins and parents and children with autoimmune thyroiditis.
These findings indicate a genetic risk factor for the disease.
In Dr. Nolen’s study of people with autoimmune thyroiditis, they found
that those who also had bipolar disorder had abnormalities in 21 mRNAs,
which contain codes for inflammation, cell survival and cell death, among
other things. If confirmed by further study, these findings could lead to
new avenues for diagnosing and treating bipolar disorder and suggest that
high rates of medical comorbidities can be explained by genetic factors.
Source: University of Pittsburgh Medical Center
Last updated: 06/07
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