Necturus

Eisthen H.L. (2000b). Neuromodulatory effects of gonadotropin releasing hormone on olfactory receptor neurons (Necturus maculosus). Neuroscience 20, 3947-3955. 

Cotton, C. U. Reuss, L., Measurement of the effective thickness of the mucosal unstirred layer in Necturus gallbladder epithelium, J. Gen. Physiol. 93, 631-647 (1989). 

E Fromter. (1972). The route of passive ion movement through the epithelium of Necturus gallbladder. J Membr Biol 8 259-301. 

Bello-Reuss, E., T.P. Grady, and L. Reuss. 1981. Mechanism of the effect of cyanide on cell membrane potentials in Necturus gall-bladder epithelium. Jour. Physiol. 314 343-357. 

Erythrocytes from man, toadfish, birds, and sheep Ca++-depleted Ehrlich ascites tumor cells Necturus gallbladder... 

The effort to understand the interrelationship of physical forces and cellular activity in the transport of salt solutions was advanced considerably by the experiments of Curran and Solomon [5] on the rat small intestine. These workers perfused the intestinal lumen of the rat with solutions all isotonic to plasma but with varying NaCl concentration. They measured both the solute flux and volume flow out of the lumen and their results are plotted in Fig. 3. These data are taken as strong evidence for the primacy of solute flux as the determinant of transepithelial water flow. This view was confirmed in experiments by Windhager et al. (6) in which the epithelium under investigation was the renal proximal tubule of the amphibian, Necturus. 

The tight junction has also been implicated in the regulation of the transepithelial salt flux across proximal tubule. Measurements in Necturus proximal tubule have shown that when the animal is in a volume expanded state there can be a 3-fold decline in epithelial resistance due essentially to a change in the paracellular shunt resistance [61], In the volume expanded state then, although active transport of salt into the lateral interspace is little changed from the control conditions, enhanced backflux of salt across the tight junction into the lumen results in substantially diminished transepithelial salt flux [61-63]. These increases in junctional permeability are likely mediated by increases in peritubular (serosal) and hence, lateral interspace pressure [64,65]. 

Thus, recent models of the lateral intercellular space have included a permeable apical membrane for the channel, designed to reflect the properties of the tight junction. Hill [66] has used such a model to discuss the possible role of the junction in determining transport tonicity. Sackin and Boulpaep [55] have presented a detailed simulation of Necturus proximal tubule in the control and volume expanded state to illustrate the effects of altered junctional permeability. The proximal tubule model of Huss and Marsh [56] included a compliance relation for the interspace that permitted study of hypothesized relations between channel pressure and junctional permeability. 

Jefferson salamander, Ambystoma jeffersonianum, 68, 178 Necturus spp., 207, 847 Northwestern salamander, Ambystoma gracile, 81, 85... 

Mudpuppy Necturus maculosus) September-June 18-180 38-63 5 years... 

Cummings, T.A., Delay, R.J., Roper, S.D. (1987). Ultrastructure of apical specializations of taste cells in the mud-puppy, Necturus maculosus. J. Comp. Neurol. 261, 604—615. 

Farbman, A.I. Gesteland, R.C. 1974. Fine structure of olfactory epithelium in the mud puppy, Necturus maculo-sus. Amer. J. Anat. 139, 227—244. 

Tang C. M, Cohen M W, and Orkand R. K. (1979) Sodium channels m axons and glial cells of the optic nerve of Necturus maculosa Gen Physiol 74, 629-642... 

Experiments on calf, Necturus and salmon DNA similar to those described in the section on phage DNA (p. 159), indicate that repeating sequences of one family are arranged in tandem (Thomas et al., 1970). The DNA of these organisms was sheared to... 

Blum AL, Shah GT, Wiebelhaus VD, et al. Pronase method for isolation of viable cells from Necturus gastric mucosa. Gastroenterology 61 189-200, 1971 Blum AL, Hir-schowitz BI, Helander HF, et al. Electrical properties of Necturus gastric mucosa. Biochim BiophysActa2A 26 -212, 91. ... 

Solomon, A.K. Single Proximal Tubules of Necturus Kidney. VIII Na and K determinations by Glass Electrodes. Am. J. Physiol. 20iL 7 3 748, 1963. 

Khuri, R.N., Hajjar, J.J., Agultan, S., Bogharian, K., Kalloghian, A. and Bizri, H. Intracellular Potassium in Cells of the Proximal Tubule of Necturus maculosus. Pflugers Arch. 3 73-80, 1972. 

ELECTROCHEMICAL POTENTIALS OF POTASSIUM AND CHLORIDE IN THE PROXIMAL RENAL TUBULES OF NECTURUS MACULOSUS... 

---