The perchlorosoluble proteins of the serum of the rainbow trout (Salmo gairdnerii Richardson): Albumin like and hemoglobin binding fraction

Palmitate‐binding, serum albumin‐like proteins in salmonids

“…In addition, our results with rainbow trout suggest that the two proteins previously referred to as para-albumins [6] are fatty-acid binding proteins and should thus simply be called albumins.…”

“…Albumin-like proteins were reported in lampreys on the basis of electrophoresis but these proteins did not bind fatty acids [12]. Studies on the serum proteins of rainbow trout have given conflicting views [5,6] but it has been proposed that the term para-albumin be given to the second and third most anodally migrating proteins based on their low molecular masses, lack of carbohydrate staining, solubility in ammonium sulphate, and electrophoretic mobilities [6]. We have used a physiological property of albumin, namely the ability to bind fatty acids [7,8], to identify plasma proteins in salmonids that appear to satisfy the standard criteria of serum albumin.…”

“…Other studies on carp plasma indicated that there were five proteins ranging in molecular mass from 145 to 58 kDa that had some properties in common with human albumin [4]. Initial characterisation of the plasma proteins of rainbow trout appeared to confirm the absence of an albumin-like fraction [5] but this was subsequently revised and two proteins were described as 'para-albumins' based on their molecular masses, electrophoretic mobilities, solubility in ammonium sulphate, and lack of glycoprotein staining [6]. One of the major physiological functions of albumin is to transport free fatty acids [7,8].…”

A literature review of the blood chemistry of rainbow trout, Salmo gairdneri Rich.

“…In contrast, quantitative analysis with physicochemical reactions resulted in albumin portions of up to 32 per cent of total plasma protein (Ahne et al, 1976). Perrier et al (1974Perrier et al ( , 1977 suggested the term 'para-albumin' for the fast-moving fractions of rainbow trout electropherogram, because their physico-chemical properties differed from these of human albumin. Perrier et al (1 974, 1976aPerrier et al (1 974, , 1978c electrophoretically localized fibrinogen, ceruloplasmin and iodurophorine.…”

Distribution of 5-hydroxytryptamine and related compounds in various brain regions of rainbow trout (Oncorhynchus mykiss)

“…The results are similar to those found in frogs (Badawy and Evans 1976) and rainbow trout fry weighing 13.60 to 49.43 g (Walton et al 1984), but are very different to those reported in mammals. In fish, particularly in rainbow trout, the lack of a link between Try and albumin could be related to the fact noted by Perrier et al (1974Perrier et al ( , 1977 that 0. mykiss albumin has physico-chemical properties different from those of human albumin. Moreover, in fish the percentage of albumin in serum is lower compared to the percentage of total serum protein (Sulya et al 1961).…”