Goldfish
Mostrando 25-36 de 106 artigos, teses e dissertações.
-
25. Redistribution of Visual Projections in Altered Optic Tecta of Adult Goldfish
The retinotectal connections formed in adult goldfish after removal of the rostro-caudal strip of dorsal tectum were mapped electrophysiologically. Initial maps recorded 1 month after surgery revealed visual scotoma corresponding to the ablated tectum. Subsequent maps recorded 4-5 months after the operation showed that the entire visual field redistributed a
-
26. Somatostatin-like immunoreactivity in the retina.
A substance with somatostatin-like immunoreactivity (SLI) was found in extracts of goldfish, frog, and cow retina. Dilutions of retinal SLI parallel the standard curve for radioimmunoassay obtained with synthetic somatostatin. Chromatography of goldfish retinal extract on Sephadex G-50 revealed two peaks of SLI, one that coeluted with synthetic somatostatin
-
27. Memory fixation in the goldfish.
-
28. Peptides from regenerating central nervous system promote specific populations of macroglia.
The regenerating central nervous system of goldfish contains peptides referred to as glia-promoting factors (GPFs) that stimulate the proliferation of mammalian macroglia. We find that, in vitro, GPF1 and GPF3 promote the appearance of oligodendroglia and GPF2 and GPF4 stimulate proliferation of astroglia. The activities of GPF1, GPF3, and GPF4 increase duri
-
29. Two gonadotropin-releasing hormone receptor subtypes with distinct ligand selectivity and differential distribution in brain and pituitary in the goldfish (Carassius auratus)
In the goldfish (Carassius auratus) the two endogenous forms of gonadotropin-releasing hormone (GnRH), namely chicken GnRH II ([His5,Trp7,Tyr8]GnRH) and salmon GnRH ([Trp7,Leu8]GnRH), stimulate the release of both gonadotropins and growth hormone from the pituitary. This control is thought to occur by means of the stimulation of distinct GnRH receptors. Thes
The National Academy of Sciences.
-
30. The goldfish nervus terminalis: a luteinizing hormone-releasing hormone and molluscan cardioexcitatory peptide immunoreactive olfactoretinal pathway.
Antisera to two putative neurotransmitters, luteinizing hormone-releasing hormone (LHRH) and molluscan cardioexcitatory tetrapeptide (H-Phe-Met-Arg-Phe-NH2; FMRF-amide), bind specifically to neurites in the inner nuclear and inner plexiform layers of the goldfish retina. Retrograde labeling showed that intraocular axon terminals originate from the nervus ter
-
31. Stages of memory formation in goldfish: evidence for an environmental trigger.
-
32. Behavioral and biochemical effects of intracranial injection of cytosine arabinoside in goldfish.
-
33. Transparency and Mottling, a Case of Mendelian Inheritance in the Goldfish CARASSIUS AURATUS
-
34. Nucleotide and deduced amino acid sequence of the goldfish neural nicotinic acetylcholine receptor alpha-3 subunit.
-
35. Nucleotide and deduced amino acid sequence of the goldfish neural nicotinic acetylcholine receptor beta-2 subunit.
-
36. Uptake of aspartic and glutamic acid by photoreceptors in goldfish retina.
The uptake of acidic amino acids by goldfish photoreceptors was investigated by light microscope autoradiography. Isolated retinas were incubated in media containing micromolar amounts of L-[3H]aspartate, L-[3H]glutamate, and D-[3H]aspartate. We have four major observations. (i) Rods accumulate L-[3H]glutamate with a high-affinity transport system; they exhi