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Abstract:

A shadow moving overhead acts as a danger stimulus and elicits an escape response in the crab Chasmagnathus that habituates after 15 trials and for a long period of time. Previous work showed that angiotensin II enhances this long-term memory. Present results indicate: (1) that the facilitatory effect of angiotensin II is not blocked by either losartan, DUP753 or the Parke Davis compound PD 123177; (2) that the angiotensin II (3-8) fragment has an enhancing effect on crab's memory stronger than that reported for the integer octopeptide; (3) that the hypermnestic effect of angiotensin II (3-8) is dose-dependent and saralasin reversible. The possibility that the action of angiotensin II on crab's memory were not due to its own action but to that of the degradation fragment angiotensin II (3-8) is discussed.

Registro:

Documento: Artículo
Título:Angiotensin II (3-8) induces long-term memory improvement in the crab Chasmagnathus
Autor:Delorenzi, A.; Locatelli, F.; Romano, A.; Nahmod, V.; Maldonado, H.
Filiación:Lab. Fisiol. Comportamiento Anim., Depto Biología, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Lab. de Sustancias Vasoactivas, Inst. de Invest. Médicas, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:angiotensin II; angiotensin IV; crab; invertebrates; learning; losartan; memory; PD 123177; 1 (4 amino 3 methylbenzyl) 5 diphenylacetyl 4,5,6,7 tetrahydroimidazo[4,5 c]pyridine 6 carboxylic acid; angiotensin derivative; angiotensin ii [3-8]; losartan; losartan potassium; animal experiment; article; controlled study; crab; learning; memory; nonhuman; priority journal; Analysis of Variance; Angiotensin II; Animals; Brachyura; Escape Reaction; Habituation, Psychophysiologic; Male; Memory
Año:1997
Volumen:226
Número:3
Página de inicio:143
Página de fin:146
DOI: http://dx.doi.org/10.1016/S0304-3940(97)00245-0
Título revista:Neuroscience Letters
Título revista abreviado:NEUROSCI. LETT.
ISSN:03043940
CODEN:NELED
CAS:Angiotensin II, 11128-99-7; angiotensin II, des-Asp(1)-des-Arg(2)-Ile(5)-, 23025-68-5
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043940_v226_n3_p143_Delorenzi

Referencias:

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  • Delorenzi, A., Pedreira, M.E., Romano, A., Pirola, C.J., Nahmod, V.E., Maldonado, H., Acute administration of angiotensin II improves long-term habituation in the crab Chasmagnathus (1995) Neurosci. Lett., 196, pp. 193-196
  • Delorenzi, A., Pedreira, M.E., Romano, A., Garcia, S.Y., Pirola, C.J., Nahmod, V.E., Maldonado, H., Angiotensin II enhances long-term memory in the crab Chasmagnagthus (1996) Brain Res. Bull., 41 (4), pp. 211-220
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Citas:

---------- APA ----------
Delorenzi, A., Locatelli, F., Romano, A., Nahmod, V. & Maldonado, H. (1997) . Angiotensin II (3-8) induces long-term memory improvement in the crab Chasmagnathus. Neuroscience Letters, 226(3), 143-146.
http://dx.doi.org/10.1016/S0304-3940(97)00245-0
---------- CHICAGO ----------
Delorenzi, A., Locatelli, F., Romano, A., Nahmod, V., Maldonado, H. "Angiotensin II (3-8) induces long-term memory improvement in the crab Chasmagnathus" . Neuroscience Letters 226, no. 3 (1997) : 143-146.
http://dx.doi.org/10.1016/S0304-3940(97)00245-0
---------- MLA ----------
Delorenzi, A., Locatelli, F., Romano, A., Nahmod, V., Maldonado, H. "Angiotensin II (3-8) induces long-term memory improvement in the crab Chasmagnathus" . Neuroscience Letters, vol. 226, no. 3, 1997, pp. 143-146.
http://dx.doi.org/10.1016/S0304-3940(97)00245-0
---------- VANCOUVER ----------
Delorenzi, A., Locatelli, F., Romano, A., Nahmod, V., Maldonado, H. Angiotensin II (3-8) induces long-term memory improvement in the crab Chasmagnathus. NEUROSCI. LETT. 1997;226(3):143-146.
http://dx.doi.org/10.1016/S0304-3940(97)00245-0