RGD Reference Report - Human prostacyclin synthase gene and hypertension : the Suita Study. - Rat Genome Database

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Human prostacyclin synthase gene and hypertension : the Suita Study.

Authors: Iwai, N  Katsuya, T  Ishikawa, K  Mannami, T  Ogata, J  Higaki, J  Ogihara, T  Tanabe, T  Baba, S 
Citation: Iwai N, etal., Circulation. 1999 Nov 30;100(22):2231-6. doi: 10.1161/01.cir.100.22.2231.
RGD ID: 401959586
Pubmed: PMID:10577996   (View Abstract at PubMed)
DOI: DOI:10.1161/01.cir.100.22.2231   (Journal Full-text)

BACKGROUND: Prostacyclin (prostaglandin I(2)) is a strong vasodilator that inhibits the growth of vascular smooth muscle cells and is also the most potent endogenous inhibitor of platelet aggregation. Therefore, it has been considered to play an important roles in cardiovascular disease. On the basis of the hypothesis that variations of the prostacyclin synthase gene may also play an important role in human cardiovascular disease, we performed a screening for variations in the human prostacyclin synthase gene.
METHODS AND RESULTS: We have detected a repeat polymorphism in the promoter region of the human prostacyclin synthase gene. The number of 9-bp (CCGCCAGCC) repeats in the promoter region, which encodes a tandem repeat of Sp1 transcriptional binding sites, varied between 3 and 7 in Japanese subjects. Luciferase reporter analysis indicated that the alleles of 3 and 4 repeats (R3 and R4, respectively) had less promoter activity in cultured human umbilical vein endothelial cells. We then investigated the possible association of this repeat polymorphism with blood pressure in a large population-based sample (the Suita Study), which consisted of 4971 Japanese participants. Multivariate models indicated that participants with the R3R3, R3R4, or R4R4 genotype (SS genotype, n=80) had significantly higher systolic pressure (P=0.0133) and pulse pressure (P=0.0005). The odds ratio of hypertension (140/90 mm Hg) for the SS genotype was 1.942 (95% confidence interval 3.20 to 1.19, P=0.0084).
CONCLUSIONS: Repeat polymorphism of the human prostacyclin synthase gene seems to be a risk factor for higher pulse pressure and is consequently a risk factor for systolic hypertension in the Japanese population.

RGD Manual Disease Annotations    Click to see Annotation Detail View

Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
PTGISHumanhypertension  IAGP DNA:repeat:promoter:g.-6(CCGCCAGCC)3-4 (human)RGD 
PtgisRathypertension  ISOPTGIS (Homo sapiens)DNA:repeat:promoter:g.-6(CCGCCAGCC)3-4 (human)RGD 
PtgisMousehypertension  ISOPTGIS (Homo sapiens)DNA:repeat:promoter:g.-6(CCGCCAGCC)3-4 (human)RGD 

Phenotype Annotations    Click to see Annotation Detail View

Manual Human Phenotype Annotations - RGD

Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
PTGISHumanElevated systolic blood pressure  IAGP DNA:repeat:promoter:g.-6(CCGCCAGCC)3-4RGD 
PTGISHumanHigh pulse pressure  IAGP DNA:repeat:promoter:g.-6(CCGCCAGCC)3-4RGD 
Objects Annotated

Genes (Rattus norvegicus)
Ptgis  (prostaglandin I2 synthase)

Genes (Mus musculus)
Ptgis  (prostaglandin I2 (prostacyclin) synthase)

Genes (Homo sapiens)
PTGIS  (prostaglandin I2 synthase)

Additional Information