Effect of central muscarinic receptors on passive-avoidance learning deficits induced by prenatal pentylenetetrazol kindling in male offspring

A. Pourmotabbed, G. Mahmoodi, S. Mahmoodi, A. Mohammadi-Farani, S. E. Nedaei, Tayebeh Pourmotabbed, T. Pourmotabbed

Research output: Contribution to journalArticle

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Abstract

Occurrence of the epileptic seizures during gestation might affect the neurodevelopment of the fetus resulting in cognitive problems for the child later in life. We have previously reported that prenatal pentylenetetrazol (PTZ)-kindling induces learning and memory deficits in the children born to kindled mothers, later in life but the mechanisms involved in this processes are unknown. The cholinergic system plays a major role in learning and memory. The present study was performed to investigate the possible involvement of central muscarinic cholinergic receptors on learning and memory deficits induced by prenatal PTZ-kindling in male offspring. Pregnant Wistar rats were kindled by repetitive i.p. injection of 25. mg/kg of PTZ on day 13 of their pregnancy. The effect of intracerebroventricular (ICV) microinjection of scopolamine and pilocarpine, muscarinic cholinergic receptors antagonist and agonist, respectively on passive-avoidance learning of pups were tested at 12. weeks of age using shuttle-box apparatus. Our data showed that the retention latencies of pups that received scopolamine (2 or 3. μg) were significantly reduced compared to those received normal saline (p<. 0.05). Interestingly, post training ICV administration of pilocarpine (2. μg) retrieved pups' memory deficits (p<. 0.001).These results demonstrate for the first time, the importance of the central muscarinic cholinergic receptors in learning and memory deficits in pups born to kindled dams and suggest a central mechanism for the cognitive and memory dysfunction, associated with seizures during pregnancy.

Original languageEnglish (US)
Pages (from-to)232-237
Number of pages6
JournalNeuroscience
Volume279
DOIs
StatePublished - Aug 26 2014

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Avoidance Learning
Pentylenetetrazole
Memory Disorders
Muscarinic Receptors
Learning
Pilocarpine
Scopolamine Hydrobromide
Cholinergic Receptors
Pregnancy
Muscarinic Agonists
Cholinergic Antagonists
Microinjections
Cholinergic Agents
Wistar Rats
Epilepsy
Seizures
Fetus
Mothers
Injections

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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Effect of central muscarinic receptors on passive-avoidance learning deficits induced by prenatal pentylenetetrazol kindling in male offspring. / Pourmotabbed, A.; Mahmoodi, G.; Mahmoodi, S.; Mohammadi-Farani, A.; Nedaei, S. E.; Pourmotabbed, Tayebeh; Pourmotabbed, T.

In: Neuroscience, Vol. 279, 26.08.2014, p. 232-237.

Research output: Contribution to journalArticle

Pourmotabbed, A. ; Mahmoodi, G. ; Mahmoodi, S. ; Mohammadi-Farani, A. ; Nedaei, S. E. ; Pourmotabbed, Tayebeh ; Pourmotabbed, T. / Effect of central muscarinic receptors on passive-avoidance learning deficits induced by prenatal pentylenetetrazol kindling in male offspring. In: Neuroscience. 2014 ; Vol. 279. pp. 232-237.
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