Title |
Effects of Repeated Treatment with Midazolam in SHR and SLA16 Rat Strains in the Triple Test
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Published in |
Behavior Genetics, September 2018
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DOI | 10.1007/s10519-018-9922-2 |
Pubmed ID | |
Authors |
Lucía Raily Acuña, Renata Cristina Nunes Marchette, Natalli Granzotto, Paula Gomes Dias, Maria Elisa Corvino, Fernando Gabriel Mazur, Fernanda Junques Corrêa, Geison Souza Izídio |
Abstract |
We exposed male and female rats of SHR (Spontaneously Hypertensive Rats) and SLA16 (SHR.LEW-Anxrr16) strains, in a non-drugged state, for five consecutive days to the Triple Test (experiment 1); or after repeated treatment with midazolam (MDZ), for four consecutive days. The fifth day was performed without treatment (experiment 2). The first experiment showed that males did not avoid and females increased the exploration of the open arms over the days. In experiment 2, SLA16 from both sexes approached more the open arms than SHR rats. The MDZ anxiolytic-like effect was sustained in both strains and sexes over the days. On the fifth day, SLA16 still approached more the open arms than SHR rats. Data suggest an absence of repeated-trial tolerance to MDZ anxiolytic-like effects. Testing the SHR and SLA16 strains, especially females, could be necessary for the future search for the genes and molecular pathways underlying anxiety/emotionality. |
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