Cited by 38Bipolar Disorder and TreatmentCircadian rhythm and melatoninGenetic Associations and Epidemiology

Examination of the clock gene cryptochrome 1 in bipolar disorder: mutational analysis and absence of evidence for linkage or association

Nievergelt, Caroline M., Kripke, Daniel F., Remick, Ronald A., Sadovnick, A. Dessa, McElroy, Susan L., Keck, Paul E., Kelsoe, John R.·2005·Psychiatric Genetics

Abstract

Bipolar disorder is associated with malfunctions of the circadian system, which regulates individual circadian rhythms and which enables the adaptation to a daily 24-h cycle and seasonal change. One of the human circadian clock genes, cryptochrome 1 (Cry1) (located on 12q23-q24.1) was analyzed because of its close correspondence to a linkage hotspot for bipolar disorder. We found no evidence for linkage of 52 bipolar families to two Cry1 flanking microsatellites under several parametric and non-parametric models. In order to employ association for a more sensitive test, 25 affected subjects selected from families with positive LOD scores were screened for mutations by sequencing 9.5% of the Cry1 gene. A total of 16 single nucleotide polymorphisms (SNPs) and a 3 base pair insertion were identified. However, no mutations with probable functional impact were found. These novel SNPs and data on allele frequency and linkage disequilibrium structure will be useful for future association analyses. Nine SNPs have been analyzed in a set of 159 parent proband triads. Linkage disequilibrium analyses using single SNPs and haplotypes showed no association to bipolar disease.Additional, more powerful, studies involving Cry1 and other circadian clock genes need to be tested before an association of circadian abnormalities with bipolar disorder can be excluded.

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Crossref · 10.1097/00041444-200503000-00008

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  • Other studies that examined SNPs throughout the sequence of some central members of the circadian clock have found no associations with these genes and any psychiatric disorders.

    “other studies that have examined SNPs throughout the sequence of some of the central members of the circadian clock have found no associations with these genes and any psychiatric disorders (Shiino et al., 2003; Nievergelt et al., 2005; Mansour et al., 2006; Nievergelt et al., 2006).”

    From Circadian genes, rhythms and the biology of mood disorders (2007) · cites this paper as Nievergelt et al., 2005

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Authors
Nievergelt, C. M., Kripke, D. F., Remick, R. A., Sadovnick, A. D., McElroy, S. L., Keck, P. E., & Kelsoe, J. R.
Affiliations
  • University of California San Diego (US)
  • St. Paul's Hospital (CA)
  • University of British Columbia (CA)
  • University of Cincinnati (US)
Corresponding author
Kelsoe, John R.
Venue
Psychiatric Genetics
Published
2005-03
Volume
15
Issue
1
Pages
45-52
ISSN
0955-8829 (ISSN-L)
OpenAlex
W2093383572
Cited by
38
References
56
Citations by year
2023: 1 · 2018: 2 · 2017: 1 · 2016: 1 · 2015: 3 · 2014: 4 · 2013: 2 · 2012: 4
FWCI
1.80
Type
journal article
Language
en
Open access
closed
Locations
  • Psychiatric Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r29mh047612-05)
  • National Institute on Aging (AG 15763, R01AG012364, AG-12364, R01AG015763)
  • National Heart, Lung, and Blood Institute (HL61280, R01HL061280)
  • National Institute of Mental Health (MH-47612, MH-59567, R01MH059567)
  • National Center for Research Resources (M-01RR00827, M01RR000827)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
bipolar disorder, CRY1, clock genes, circadian rhythm, genetic linkage, genetic association, single nucleotide polymorphisms, insertion polymorphism, linkage disequilibrium, haplotypes
MeSH terms
Base Sequence, Biological Clocks, Bipolar Disorder, Chromosome Mapping, Chromosomes, Human, Pair 12, DNA Mutational Analysis, Flavoproteins, Gene Frequency, Genotype, Humans, Lod Score, Risk, Linkage Disequilibrium, Polymerase Chain Reaction, DNA Primers, Microsatellite Repeats, Polymorphism, Single Nucleotide, Cryptochromes

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