Can I read Spontaneous Contractions in Elasmobranch Vessels in Vitro on EtoBox?
Spontaneous Contractions in Elasmobranch Vessels in Vitro by Olson, Kenneth R.; Forster, Malcolm E.; Bushnell, Peter G.; Duff, Douglas W. is a Environmental Science article available to read on EtoBox.
What is Spontaneous Contractions in Elasmobranch Vessels in Vitro about?
Isolated vessels from four elasmobranchs, yellow stingray (Urolophus jamaicensis), clearnose skate (Raja eglanteria), ghost shark (Hydrolagus novaezelandiae), and spiny dogfish (Squalus acanthias), were examined for the presence of spontaneous contractions (SC). SC were observed in otherwise unstimulated dorsal aortas (DA) from stingray and ghost shark, but not in skate DA. Unstimulated ventral aortas (VA) did not exhibit SC. After treatment of VA with a contractile agonist, SC appeared in stingray and skate but not ghost shark or dogfish. SC in stingray VA were subsequently inhibited by either epinephrine (10(-5) M) or indomethacin (10(-4) M). Agonist contraction also elicited strong SC in ductus Cuvier from stingray, but not from ghost shark or dogfish. SC in dogfish hepatic portal veins (HPV) produced a rhythmical oscillation in tension. The frequency of HPV SC was highest (approximately 1 min(-1)) in intact veins and lower (approximately 3 min(-1)) in vein segments, indicative of a dominant pacemaker in the intact vessel. SC in HPV were depressed during the first 30 min of hypoxia, but there was substantial recovery over an additional 30 min of hypoxia and complete recovery upo
Who reads Spontaneous Contractions in Elasmobranch Vessels in Vitro?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Olson, Kenneth R.; Forster, Malcolm E.; Bushnell, Peter G.; Duff, Douglas W.
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0022-104X)
- Published
- 2000
- Language
- EN
- Field
- Environmental Science (Life Sciences)