geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effect of hibernation on sodium and chloride ion transport in isolated frog skin


, : Effect of hibernation on sodium and chloride ion transport in isolated frog skin. Folia Biologica 55(1-2): 47-51

The aim of the study Was to evaluate the effect of hibernation oil electrophysiological parameters of isolated frog skill Under control incubation (Ringer solution) and after inhibition of Na+ and Cl- transepithelial transport by application of amiloride and bumetanide. The transepithelial electrical potential difference (PD in mV) was measured before and after mechanical stimulation of isolated frog skin. The tissues were mounted in a modified Ussing chamber. The results revealed a reduced PD of frog skill during hibernation. In February, as compared with November, PD of Frog skill incubated in Ringer solution decreased by about 50%,,. Hibernation also affected hyperpolarization (dPD) of frog skill after mechanical Stimulation. In November and December, MID was about 50%) and 30%,) lower, respectively. compared With the subsequent two months of the experiment. The incubation of frog skin with amiloride, a sodium ion channel blocker, resulted ill reduced values of all measured electrophysiological parameters irrespective of the phase of hibernation. After application of chloride ion transport inhibitor (bumetanide), the PD in November and December decreased compared with the control incubation by about 80% and 75%, while ill January and February by about 40% and 25%, respectively. In January and February dPD increased by four times and three times as compared with November and December. Hibernation reduces net ion flow in isolated frog skin. During the initial period of hibernation the sensitivity of' the skill to mechanical stimulation also decreases. Towards the end of hibernation, oil the other hand, excitation of mechanosensitive ion channels takes place.

US$29.90

PMID: 17687934


Other references

Jahn, T.L.uis; Wulff, V.J.hn, 1941: Influence of a visual diurnal rhythm on flicker reponse contours of Dytiscus. The frequency of a flickering light just necessary to cause fusion of the electroretinogram was detd. for Dytiscus fasciventris over a wide intensity range (0.1 to 10,000 foot-candles) during the day and night phases of the diurnal rhythm. At 10,0...

AlZahal, O.; Valdes, E.V.; McBride, B.W., 2016: Analysis of the distal gut bacterial community by 454-pyrosequencing in captive giraffes (Giraffa camelopardalis). The objective of this study was to characterize the structure of the fecal bacterial community of five giraffes (Giraffa camelopardalis) at Disney's Animal Kingdom, FL. Fecal genomic DNA was extracted and variable regions 1-3 of the 16S rRNA...

Nabenishi, H.; Yamazaki, A., 2017: Impaired reproduction in Japanese Black cattle under cold environmental conditions. Environmental factors such as the temperature-humidity index (THI) are known to affect reproductive parameters in cattle. Therefore, here, we examined whether there was any correlation between the THI and the reproductive performance of Japanese B...

Chan, C.B.; D.L.o, D.; Joseph, J.W.; McQuaid, T.S.; Ha, X.F.; Xu, F.; Tsushima, R.G.; Pennefather, P.S.; Salapatek, A.M.; Wheeler, M.B., 2001: Increased uncoupling protein-2 levels in beta-cells are associated with impaired glucose-stimulated insulin secretion: mechanism of action. In pancreatic beta-cells, glucose metabolism signals insulin secretion by altering the cellular array of messenger molecules. ATP is particularly important, given its role in regulating cation channel activity, exocytosis, and events dependent upo...

Sánchez-Pérez, A.; Brown, G.; Malik, R.; Assinder, S.J.; Cantlon, K.; Gotsis, C.; Dunbar, S.; Fraser, S.T., 2013: Rapid detection of haemotropic mycoplasma infection of feline erythrocytes using a novel flow cytometric approach. The haemotropic mycoplasmas Mycoplasma haemofelis and Candidatus Mycoplasma haemominutum cause feline infectious anaemia with infection rates in feline populations reflecting widespread subclinical infection. Clinically significant infections are...

Rausch, R., 1947: Andrya sciuri n. sp. a. cestode from the northern Hying squirrel. Jit. Lancaster. Pa: 316-318

Roman, H.Nicolae.; Zitouni, N.B.; Kachmar, L.; Ijpma, G.; Hilbert, L.; Matusovsky, O.; Benedetti, A.; Sobieszek, A.; Lauzon, A-Marie., 2013: Unphosphorylated calponin enhances the binding force of unphosphorylated myosin to actin. Smooth muscle has the distinctive ability to maintain force for long periods of time and at low energy costs. While it is generally agreed that this property, called the latch-state, is due to the dephosphorylation of myosin while attached to acti...

Grevsen, K., 1992: Experiments with the cultivation of red leafed chicory - Radicchio Rosso - under North European conditions. Red leafed chicory (Cichorium intybus var. foliosum type Radicchio Rosso) is normally grown in Italy, mainly in the province of Venice. Research was carried out to examine the possibility of introducing it as a specialty crop in N. Europe. The mai...

Grenier, C.; Pépin, J.; Nault, V.; Howson, J.; Fournier, X.; Poirier, M-Sol.; Cabana, Jérôme.; Craig, C.; Beaudoin, M.; Valiquette, L., 2011: Impact of guideline-consistent therapy on outcome of patients with healthcare-associated and community-acquired pneumonia. A new category of healthcare-associated pneumonia (HCAP) has been added in the most recent American Thoracic Society/Infectious Diseases Society of America (ATS/IDSA) guidelines, since multidrug-resistant (MDR) pathogens are more common in patient...

Senyuk, V.I.; Rotari, V.K.; Jivotovskaya, A.V.; Zaharov, A.D.; Hrostmann, C.; Vaintraub, I.A., 1997: Proteolysis of phaseolin, the 7S storage protein of common beans seed by several exo- and endogenous proteinases. FASEB Journal 11(9): A1275