A. Roy et al., Mice lacking in gp91 phox subunit of NAD(P)H oxidase showed glomus cell [Ca2+](i) and respiratory responses to hypoxia, BRAIN RES, 872(1-2), 2000, pp. 188-193
The hypothesis that NAD(P)H oxidase may serve as an oxygen sensor was teste
d using the mice deficient (knock-out) in gp91phox subunit of NAD(P)H oxida
se enzyme complex and compared with wild-type (C57BL/6J) strain measuring t
he ventilatory and glomus cell intracellular calcium ([Ca2+](i)) responses
of carotid body to hypoxia. The hypoxic ventilatory responses as well as th
e [Ca2+](i) were preserved in the NAD(P)H oxidase knock-out mice. NAD(P)H o
xidase, though a major source of oxygen radical production, is not the oxyg
en sensor in mice carotid body. (C) 2000 Elsevier Science B.V. All rights r
eserved.