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2017 ; 7
(1
): 9706
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A rare genetic variant of BPIFB4 predisposes to high blood pressure via
impairment of nitric oxide signaling
#MMPMID28852218
Vecchione C
; Villa F
; Carrizzo A
; Spinelli CC
; Damato A
; Ambrosio M
; Ferrario A
; Madonna M
; Uccellatore A
; Lupini S
; Maciag A
; Ryskalin L
; Milanesi L
; Frati G
; Sciarretta S
; Bellazzi R
; Genovese S
; Ceriello A
; Auricchio A
; Malovini A
; Puca AA
Sci Rep
2017[Aug]; 7
(1
): 9706
PMID28852218
show ga
BPIFB4 is associated with exceptional longevity: four single-nucleotide
polymorphisms distinguish the wild-type form from a longevity-associated variant
conferring positive effects on blood pressure. The effect of a rare variant (RV;
allele frequency, 4%) on blood pressure is unknown. Here, we show that
overexpression of RV-BPIFB4 in ex-vivo mouse vessels impairs phosphorylation of
endothelial nitric oxide synthase (eNOS), blunting acetylcholine-evoked
vasorelaxation; in vivo, virally mediated overexpression of RV-BPIFB4 increases
blood pressure, an action absent in eNOS-deficient mice. In humans, we found RV
carriers to have increased diastolic blood pressure, a finding that was more
marked in subjects on anti-hypertensive medication; moreover, recombinant
RV-BPIFB4 protein impaired eNOS function in ex-vivo human vessels. Thus,
RV-BPIFB4 acts directly on blood pressure homeostasis and may represent a novel
biomarker of vascular dysfunction and hypertension.