Antibacterial activity of lactose-binding lectins from Bufo arenarum skin.

The envelopes of amphibian oocytes: physiological modifications in Bufo arenarum

A characterization of the Amphibian Bufo arenarum oocyte envelope is presented. It was made in different functional conditions of the oocyte: 1) when it has been released into the coelomic cavity during ovulation (surrounded by the coelomic envelope, (CE), 2) after it has passed through the oviduct and is deposed (surrounded by the viteline envelope, (VE), and 3) after oocyte activation (surrou...

Sperm concentration and fertilization rate in Bufo arenarum (Amphibia: Anura).

The influence of sperm concentration upon the fertilization rate of Bufo arenarum oocytes was determinated. The experimental results were analysed according to the theories of Rothschild and Swann, and Hultin and Hagström for Psammechinus miliaris. The experimental results agreed with the predictions of the latter theory. Since Bufo arenarum and Psammechinus miliaris oocytes differ in both size...

Delta-aminolevulinic acid dehydratase (ALAD) activity in blood of Bufo arenarum (Anura).

The aim of the present investigation was to standardize a method for measuring delta-aminolevulinic acid dehydratase (ALAD) activity in circulating red blood cells of adult Bufo arenarum kept in controlled environmental conditions, and to obtain reference basal values suitable for environmental monitoring of lead exposure. The normal ALAD activity for B. arenarum was 131.86 +/- 14.47 U per lite...

Biol. Pharm. Bull. 28(5) 791—796 (2005)

hydrate-binding or -recognition activity, and their own structural motifs, e.g. M-, L-, P-, I-, and R-type lectins and calnexin in addition to the classical families of C-type and galectins. “C-type” family was derived from Ca -dependent lectins involving consensus motif of carbohydrate recognition domain (CRD), which is well established to concern with the binding form to their hapten sugar or...

Anaerobiosis in the segmenting eggs of Bufo arenarum.