Zobrazeno 1 - 9
of 9
pro vyhledávání: '"D. F. Stiffler"'
Publikováno v:
Archives of Physiology and Biochemistry. 108:405-414
The responses to mucosal pressure elevation (physiological pressure: PP) were compared to responses to serosal pressure elevation (non-physiological pressure: NPP) in bullfrog urinary bladders (Rana catesbeiana). The bladders were mounted on vertical
Autor:
M. J. Zerella, D. F. Stiffler
Publikováno v:
Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 169:481-486
We measured Ca2+ exchanges across the skin of larval and adult Ambystoma tigrinum using the radio-isotope influx method. We found that the skin of both morphs takes up Ca2+ in a manner that is proportional to external [Ca2+], saturable and oriented a
Publikováno v:
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 258:R1363-R1370
Neotenic larval Ambystoma tigrinum were subjected to hypercapnia (3% CO2, 22 Torr) for 24 h under different conditions: alpha-adrenergic blockade using phentolamine, beta-adrenergic blockade using propranolol, and sham treatments. The sham animals we
Publikováno v:
The Journal of experimental zoology. 277(5)
Rana pipiens were divided into four groups: controls; hypocalcemic frogs, depleted of salts by acclimation to deionized water; hypercalcemic frogs, calcium-loaded by the introduction of 40 mumol calcium gluconate; and frogs exposed to the potential c
Autor:
S, Eskandari, D F, Stiffler
Publikováno v:
General and comparative endocrinology. 105(1)
Larval Ambystoma tigrinum were cannulated nonocclusively in the truncus arteriosus and allowed to recover for 20-24 hr. In one group of animals a peritoneal cannula was inserted in order to induce acidosis through the injection of lactic acid (2 micr
Autor:
H R, Hartenstein, D F, Stiffler
Publikováno v:
Experimental biology. 48(6)
Renal clearance methods were used to observe responses to the posterior pituitary peptide, mesotocin, by the kidneys of adult Ambystoma tigrinum and Notophthalmus viridescens. Ambystoma tigrinum responded to hypophysectomy with a decrease in urine fl
Publikováno v:
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 245:R689-R694
The aquatic urodeles Ambystoma tigrinum and Necturus maculosus responded to hypercapnia quite differently. A. tigrinum, after 2-h exposure to 22 Torr partial pressure of CO2 (PCO2), decreased arterial pH (pHa) from 7.85 to 7.32 and increased arterial
Publikováno v:
General and comparative endocrinology. 62(2)
Larval Ambystoma tigrinum were acclimated to distilled water, 150 mM NaCl, or 100 mM KCl to alter electrolyte balance. The effects on electrolyte balance and circulating interrenal steroids were observed by analysis of plasma and urine samples. Stero
Autor:
M L, De Ruyter, D F, Stiffler
Publikováno v:
General and comparative endocrinology. 62(2)
Renal clearance techniques were used to assess the role of ACTH on renal electrolyte transport in larval Ambystoma tigrinum. Radioimmunoassay was employed to evaluate changes in circulating aldosterone in these animals. Larvae were hypophysectomized