High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus
Previous work on the brackish-water crab Chasmagnathus granulatus demonstrated that an endogenous peptide similar to angiotensin II plays a significant role in enhancing long-term memory that involves an association between context and an iterative danger stimulus (context-signal memory). The presen...
| Publicado: |
2000
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v203_n22_p3369_Delorenzi http://hdl.handle.net/20.500.12110/paper_00220949_v203_n22_p3369_Delorenzi |
| Aporte de: |
| id |
paper:paper_00220949_v203_n22_p3369_Delorenzi |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_00220949_v203_n22_p3369_Delorenzi2023-06-08T14:45:31Z High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus Angiotensin Chasmagnathus granulatus Crab Invertebrate Memory Osmoregulation Water salinity angiotensin brain peptide long term memory osmotic stress salinity sea water Angiotensin II Angiotensins Animals Brachyura Brain Brain Chemistry Environment Immunohistochemistry Male Memory Osmolar Concentration Saline Solution, Hypertonic Sodium Chloride Time Factors Chasmagnathus granulata Decapoda (Crustacea) Invertebrata Previous work on the brackish-water crab Chasmagnathus granulatus demonstrated that an endogenous peptide similar to angiotensin II plays a significant role in enhancing long-term memory that involves an association between context and an iterative danger stimulus (context-signal memory). The present results show that this memory enhancement could be produced by moving crabs from brackish water to sea water (33.0‰) and keeping them there for at least 4 days. The possibility that such a facilitatory effect is due to osmotic stress is ruled out. Coincidentally, the level of angiotensin-II-like peptides in crab brain, measured by radioimmunoassay, increases with the length of exposure to sea water, reaching a significantly different level at the fourth day. The presence of angiotensin-II-like immunoreactive material in neural structures of the supraoesophageal and eyestalk ganglia was confirmed by immunohistochemical analysis. The results are interpreted as supporting the hypothesis that exposure to water of high salinity is an external cue triggering a process mediated by angiotensins that leads to enhanced memory in these crabs. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v203_n22_p3369_Delorenzi http://hdl.handle.net/20.500.12110/paper_00220949_v203_n22_p3369_Delorenzi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Angiotensin Chasmagnathus granulatus Crab Invertebrate Memory Osmoregulation Water salinity angiotensin brain peptide long term memory osmotic stress salinity sea water Angiotensin II Angiotensins Animals Brachyura Brain Brain Chemistry Environment Immunohistochemistry Male Memory Osmolar Concentration Saline Solution, Hypertonic Sodium Chloride Time Factors Chasmagnathus granulata Decapoda (Crustacea) Invertebrata |
| spellingShingle |
Angiotensin Chasmagnathus granulatus Crab Invertebrate Memory Osmoregulation Water salinity angiotensin brain peptide long term memory osmotic stress salinity sea water Angiotensin II Angiotensins Animals Brachyura Brain Brain Chemistry Environment Immunohistochemistry Male Memory Osmolar Concentration Saline Solution, Hypertonic Sodium Chloride Time Factors Chasmagnathus granulata Decapoda (Crustacea) Invertebrata High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus |
| topic_facet |
Angiotensin Chasmagnathus granulatus Crab Invertebrate Memory Osmoregulation Water salinity angiotensin brain peptide long term memory osmotic stress salinity sea water Angiotensin II Angiotensins Animals Brachyura Brain Brain Chemistry Environment Immunohistochemistry Male Memory Osmolar Concentration Saline Solution, Hypertonic Sodium Chloride Time Factors Chasmagnathus granulata Decapoda (Crustacea) Invertebrata |
| description |
Previous work on the brackish-water crab Chasmagnathus granulatus demonstrated that an endogenous peptide similar to angiotensin II plays a significant role in enhancing long-term memory that involves an association between context and an iterative danger stimulus (context-signal memory). The present results show that this memory enhancement could be produced by moving crabs from brackish water to sea water (33.0‰) and keeping them there for at least 4 days. The possibility that such a facilitatory effect is due to osmotic stress is ruled out. Coincidentally, the level of angiotensin-II-like peptides in crab brain, measured by radioimmunoassay, increases with the length of exposure to sea water, reaching a significantly different level at the fourth day. The presence of angiotensin-II-like immunoreactive material in neural structures of the supraoesophageal and eyestalk ganglia was confirmed by immunohistochemical analysis. The results are interpreted as supporting the hypothesis that exposure to water of high salinity is an external cue triggering a process mediated by angiotensins that leads to enhanced memory in these crabs. |
| title |
High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus |
| title_short |
High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus |
| title_full |
High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus |
| title_fullStr |
High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus |
| title_full_unstemmed |
High environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab Chasmagnathus granulatus |
| title_sort |
high environmental salinity induces memory enhancement and increases levels of brain angiotensin-like peptides in the crab chasmagnathus granulatus |
| publishDate |
2000 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v203_n22_p3369_Delorenzi http://hdl.handle.net/20.500.12110/paper_00220949_v203_n22_p3369_Delorenzi |
| _version_ |
1768542207252365312 |