Tryptophan hydroxylase (TPH) is the rate-limiting enzyme in the synthesis of 5-hydroxytryptamine (5-HT). An association study in bipolar affective disorder I or unipolar major affective disorder was performed by using a Bfa I restriction site polymorphism within intron 7 of the tryptophan hydroxylas
No association of an insertion/deletion polymorphism in the angiotensin I converting enzyme gene with bipolar or unipolar affective disorders
โ Scribed by Furlong, Robert A. ;Keramatipour, Mohammad ;Ho, Luk W. ;Rubinsztein, Judy S. ;Michael, Albert ;Walsh, Cathy ;Paykel, Eugene S. ;Rubinsztein, David C.
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 71 KB
- Volume
- 96
- Category
- Article
- ISSN
- 0148-7299
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โฆ Synopsis
A recent Japanese study on the angiotensin I converting enzyme gene (ACE) insertion/ deletion polymorphism reported that both the D allele (P < 0.02) and the DD genotype (P < 0.002) were significantly more frequent in affective disorder cases than in controls [Arinami et al., 1996: Biol Psychiatry 40: 1122-1127]. A replication study was performed by using 157 bipolar I affective disorder cases, 169 major depressive disorder cases, and 313 controls. No significant association with this polymorphism was found in either disorder or in a combined affective disorder group. These results do not support the ACE gene having a major role in the etiology of either bipolar or unipolar affective disorders. Am. J. Med. Genet. (Neuropsychiatr. Genet.) 96:733-735, 2000.
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The dopaminergic system, along with the serotonergic and noradrenergic systems, has been implicated in the etiology of mood disorders. An association study of a functional variant in the promoter region of the dopamine D2 receptor (DRD2) with bipolar affective disorder I or unipolar major affective