Synergic action of gangliosides on alpha-MSH-induced cyclic AMP levels in rat brain slices. 1996

N E Lezcano, and M González, and G D Fidelio, and M E Celis
Departamento de Farmacología, CIQUIBIC, Facultad de Ciencias Quimicas, Universidad Nacional de Córdoba, Argentina.

Gangliosides are particularly enriched in neuron cell membranes and they were postulated to be involved in the modulation of membrane-mediated transduction of information. In this study we explore the possibility that the increase in cAMP tissular levels induced by alpha-MSH may be modulated by the action of exogenously added gangliosides. We measured the level of cAMP in both tissues and medium in response to the alpha-MSH in slices previously incubated with total bovine brain gangliosides (TBG). When slices were exposed to TBG, the effect of alpha-MSH on inducing an increase in the content of cAMP was practically twice compared to the changes induced by alpha-MSH or TBG alone. We conclude that the presence of gangliosides may facilitate the alpha-MSH interaction with its receptor, increasing the cAMP levels in slices containing the CP and Acc nuclei.

UI MeSH Term Description Entries
D008297 Male Males
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D001923 Brain Chemistry Changes in the amounts of various chemicals (neurotransmitters, receptors, enzymes, and other metabolites) specific to the area of the central nervous system contained within the head. These are monitored over time, during sensory stimulation, or under different disease states. Chemistry, Brain,Brain Chemistries,Chemistries, Brain
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D004357 Drug Synergism The action of a drug in promoting or enhancing the effectiveness of another drug. Drug Potentiation,Drug Augmentation,Augmentation, Drug,Augmentations, Drug,Drug Augmentations,Drug Potentiations,Drug Synergisms,Potentiation, Drug,Potentiations, Drug,Synergism, Drug,Synergisms, Drug
D005732 Gangliosides A subclass of ACIDIC GLYCOSPHINGOLIPIDS. They contain one or more sialic acid (N-ACETYLNEURAMINIC ACID) residues. Using the Svennerholm system of abbrevations, gangliosides are designated G for ganglioside, plus subscript M, D, or T for mono-, di-, or trisialo, respectively, the subscript letter being followed by a subscript arabic numeral to indicated sequence of migration in thin-layer chromatograms. (From Oxford Dictionary of Biochemistry and Molecular Biology, 1997) Ganglioside,Sialoglycosphingolipids
D000242 Cyclic AMP An adenine nucleotide containing one phosphate group which is esterified to both the 3'- and 5'-positions of the sugar moiety. It is a second messenger and a key intracellular regulator, functioning as a mediator of activity for a number of hormones, including epinephrine, glucagon, and ACTH. Adenosine Cyclic 3',5'-Monophosphate,Adenosine Cyclic 3,5 Monophosphate,Adenosine Cyclic Monophosphate,Adenosine Cyclic-3',5'-Monophosphate,Cyclic AMP, (R)-Isomer,Cyclic AMP, Disodium Salt,Cyclic AMP, Monoammonium Salt,Cyclic AMP, Monopotassium Salt,Cyclic AMP, Monosodium Salt,Cyclic AMP, Sodium Salt,3',5'-Monophosphate, Adenosine Cyclic,AMP, Cyclic,Adenosine Cyclic 3',5' Monophosphate,Cyclic 3',5'-Monophosphate, Adenosine,Cyclic Monophosphate, Adenosine,Cyclic-3',5'-Monophosphate, Adenosine,Monophosphate, Adenosine Cyclic
D000521 alpha-MSH A 13-amino acid peptide derived from proteolytic cleavage of ADRENOCORTICOTROPIC HORMONE, the N-terminal segment of ACTH. ACTH (1-13) is amidated at the C-terminal to form ACTH (1-13)NH2 which in turn is acetylated to form alpha-MSH in the secretory granules. Alpha-MSH stimulates the synthesis and distribution of MELANIN in MELANOCYTES in mammals and MELANOPHORES in lower vertebrates. MSH, alpha,alpha Intermedin,alpha-Melanocyte-Stimulating Hormone,(Des-Acetyl)-alpha-MSH,(Desacetyl)alpha-MSH,ACTH (1-13),ACTH (1-13)NH2,ACTH(1-13),Acetylated ACTH (1-13)NH2,Adrenocorticotropin (1-13)NH2,DE-alpha-MSH,Des-Acetyl MSH,Desacetyl alpha-MSH,Desacetyl alpha-Melanocyte-Stimulating Hormone,MSH, (Desacetyl)alpha-,alpha-Melanotropin,Desacetyl alpha MSH,Desacetyl alpha Melanocyte Stimulating Hormone,Hormone, Desacetyl alpha-Melanocyte-Stimulating,Hormone, alpha-Melanocyte-Stimulating,Intermedin, alpha,MSH, Des-Acetyl,alpha MSH,alpha Melanocyte Stimulating Hormone,alpha Melanotropin,alpha-MSH, Desacetyl,alpha-Melanocyte-Stimulating Hormone, Desacetyl
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats

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