Results 181 to 190 of about 2,099 (215)
Some of the next articles are maybe not open access.
Effect of cadmium on Golgi complex of freshwater teleost (Pimelodus maculatus) hepatocytes
Protoplasma, 1980Freshwater teleost hepatocytes show hypertrophied Golgi complexes 3 days after a single intraperitoneal injection of cadmium chloride (10 mg/Kg).
openaire +2 more sources
Tubulated bodies in teleost (Pimelodus maculatus) endothelial cells.
Archives d'anatomie microscopique et de morphologie experimentale, 1983In the present report tubulated granules are described for the first time in a freshwater teleost (Pimelodus maculatus) endothelial cells. Some ultrastructural characteristics as well as the localization and distribution suggest that tubulated bodies represent the teleost counterpart of the Weibel-Palade bodies described in other animal classes.
S, Ferri, A, Sesso
openaire +1 more source
Comparative Biochemistry and Physiology Part A: Physiology, 1977
Abstract 1. 1. The effect of changes in pH, ATP concentration and temperature upon the oxygen equilibria of the hemoglobin hemolysate from the freshwater catfish Pimelodus maculatus are reported. Chromatography of the hemolysate allowed the isolation of three components, and oxygen equilibrium studies on two of these are also mentioned. 2. 2.
openaire +1 more source
Abstract 1. 1. The effect of changes in pH, ATP concentration and temperature upon the oxygen equilibria of the hemoglobin hemolysate from the freshwater catfish Pimelodus maculatus are reported. Chromatography of the hemolysate allowed the isolation of three components, and oxygen equilibrium studies on two of these are also mentioned. 2. 2.
openaire +1 more source
Environmental Biology of Fishes, 2003
This study analyses the ontogenetic diet shifts of a Neotropical catfish, Pimelodus maculatus (Siluriformes, Pimelodidae), from an ecomorphological standpoint. We collected 241 individuals in the Piracicaba River (Brazil) and, in the laboratory, seven morphometric variables were recorded from each specimen: standard length (SL), body depth, head length,
Lima-Junior, S. E., Goitein, R.
openaire +2 more sources
This study analyses the ontogenetic diet shifts of a Neotropical catfish, Pimelodus maculatus (Siluriformes, Pimelodidae), from an ecomorphological standpoint. We collected 241 individuals in the Piracicaba River (Brazil) and, in the laboratory, seven morphometric variables were recorded from each specimen: standard length (SL), body depth, head length,
Lima-Junior, S. E., Goitein, R.
openaire +2 more sources
Electron microscopic study of teleost (Pimelodus maculatus) pancreatic islet cells.
Gegenbaurs morphologisches Jahrbuch, 1984The endocrine pancreas of the freshwater teleost Pimelodus maculatus was studied by electron microscopy. Based on the granule morphology 2 cell types were described: Secretory granules of type I cells are rounded, nearly completely filling the limiting membranous sac which measures from 120 to 150 nm in diameter; the type II granules are also rounded ...
S, Ferri, A C, Stipp
openaire +1 more source
Ultrastructure of the epidermal cells of the teleost Pimelodus maculatus Lacépède, 1803 (pisces).
Anatomischer Anzeiger, 1977By means of electronmicroscope technique were studied the cell types in the epidermis of the teleost Pimelodus maculatus LACEPEDE. The varied cells were described after their morphological aspect. The behaviour of the plasma membrane and the cytoplasmatic components, especially the microfilaments and the rough endoplasmatic reticulum, were discussed in
S, Ferri +3 more
openaire +1 more source
General and Comparative Endocrinology, 1983
Mammalian insulin (350 IU/kg) and glucagon (2.5 mg/kg) were injected intraperitoneally into Pimelodus maculatus, a South American teleost. Extent of carbohydrate regulation was estimated through determination of plasma glucose levels, liver-somatic index, and liver and muscle glycogen contents. The effects of insulin administration, examined 6, 12, 24,
N M, Carneiro, A D, Amaral
openaire +2 more sources
Mammalian insulin (350 IU/kg) and glucagon (2.5 mg/kg) were injected intraperitoneally into Pimelodus maculatus, a South American teleost. Extent of carbohydrate regulation was estimated through determination of plasma glucose levels, liver-somatic index, and liver and muscle glycogen contents. The effects of insulin administration, examined 6, 12, 24,
N M, Carneiro, A D, Amaral
openaire +2 more sources
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1976
The effect of environmental temperature on the activity of liver microsomes of fish (Pimelodus maculatus) to desaturate and elongate oleic, linoleic and alpha-linolenic acids was studied. It was found that: 1. Fish kept at 14-15 degrees C had higher desaturation and elongation activity than animals kept at 29-30 degrees C. The ratio of activity was the
M, de Torrengo, R R, Brenner
openaire +2 more sources
The effect of environmental temperature on the activity of liver microsomes of fish (Pimelodus maculatus) to desaturate and elongate oleic, linoleic and alpha-linolenic acids was studied. It was found that: 1. Fish kept at 14-15 degrees C had higher desaturation and elongation activity than animals kept at 29-30 degrees C. The ratio of activity was the
M, de Torrengo, R R, Brenner
openaire +2 more sources
Temperature induced transformation of teleost (Pimelodus maculatus) epidermal cells.
Gegenbaurs morphologisches Jahrbuch, 1983Superficial epidermal cells of the teleost Pimelodus maculatus show modifications after heat exposure (36 degrees C) for 3 days. Heat treatment affects the arrangement of cytoplasmic filaments resulting in the disappearance of the microridges. The fish maintained at 36 degrees C during 3 days show modifications in the cytoplasmic organization of their ...
openaire +1 more source
Anatomischer Anzeiger, 1987
In the present study, a hitherto undescribed granule type in the leucocytes of the freshwater teleost Pimelodus maculatus is reported. This membrane bounded elliptic granule contains straight tubules measuring from 8 to 10 nm in diameter. Almost all granules present 1 or 2 electron dense inclusions more often than not with a geometrical form.
S, Ferri, F J, Hernandez Blazquez
openaire +1 more source
In the present study, a hitherto undescribed granule type in the leucocytes of the freshwater teleost Pimelodus maculatus is reported. This membrane bounded elliptic granule contains straight tubules measuring from 8 to 10 nm in diameter. Almost all granules present 1 or 2 electron dense inclusions more often than not with a geometrical form.
S, Ferri, F J, Hernandez Blazquez
openaire +1 more source