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Inhibition of the synthesis of glycosphingolipid by a ceramide analogue (PPMP) in the gastrulation of Bufo arenarum
(Cambridge University Press, 2000-05)
In the present study the role of glycosphingolipids (GSL) in amphibian development was investigated. We analysed the de novo synthesis of neutral GSL and gangliosides through the initial stages of Bufo arenarnm embryo ...
Effect of mercuric chloride on electrical parameters and anion fluxes in the toad skin
(Elsevier Science Inc, 2005-12)
The amphibian skin, widely used for studying the transepithelial passage of electrolytes, exhibits anion pathways relatively specific for Cl-. We studied the effect of HgCl2, 1.0×10-4 M on its electrical parameters and ...
Acción del aloxano en el sapo bufo Arenarum Hensel
(Sociedad Argentina de Biología, 1945-05)
La acción del aloxano sobre la glucemia ha sido muy estudiada en los mamíferos, que muestran una curva trifásica: hiperglucemia inicial de pocas horas, hipoglucemia más prolongada, hiperglucemia secundaria que a menudo es ...
Beta-cyclodextrin and permeability to water in the bladder of Bufo arenarum
(National Research Council Canada-NRC Research Press, 2011-05)
We measured the effect of β-cyclodextrin (BCD, a cholesterol scavenger) on water flow across the isolated toad bladder exposed to an osmotic gradient (Jw) by a gravimetric technique. BCD, when present in the solution bathing ...
Midbrain auditory sensitivity in toads of the genus Bufo (amphibia - bufonidae) with different vocal repertoires
(Springer-Verlag, 1990)
South American male toads Bufo chilensis emit a release call in contact with other individuals and a soft amplectic call, B. spinulosus males emit a release call while isolated in breeding areas, and B. arenarum produces ...
Cytosolic glucocorticoid receptor in the testis of Bufo arenarum: Seasonal changes in its binding parameters
(Elsevier Inc, 2006-07)
Glucocorticoids (GC) are the hormonal mediators of stress. In mammals, high levels of GC have negative eVects on reproductive physiology. For instance, GC can inhibit testicular testosterone synthesis by acting via ...
Effect of human gonadotropins on spermiation and androgen biosynthesis in the testis of the toad Bufo arenarum (Amphibia, Anura)
(Wiley-liss, Div John Wiley & Sons Inc, 2006-01-01)
This paper analyzes, in the toad Bufo arenarum, the effect on spermiation and androgen secretion of two human recombinant gonadotropins, human recombinant LH (hrLH) and human recombinant FSH (hrFSH) as well as the well-known ...
Effect of meiotic maturation on yolk platelet lipids from Bufo arenarum oocytes
(Wiley-liss, Div John Wiley & Sons Inc, 2005-09)
Progesterone induces the resumption of meiosis in Bufo arenarum full-grown arrested oocytes through a nongenomic mechanism called meiotic maturation. Growing evidence indicates that lipids are involved in the maturation ...