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Kisspeptin ? A Possible Drug-candidate For Mental And Cognitive Disorders | 2515
ISSN: 2155-9562

Journal of Neurology & Neurophysiology
Open Access

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Kisspeptin ? a possible drug-candidate for mental and cognitive disorders

International Conference on Central Nervous System - Drug Effects & Novel Drug Development

Michal Cardon, Matityahu Fridkin and Michal Schwartz

ScientificTracks Abstracts: J Neurol Neurophysiol

DOI: 10.4172/2155-9562.S1.003

Kisspeptins are a family of proteins that are known as regulators of sex hormones. Recently, we found that abnormal sensorimotor gating (measured in paradigms of prepulse inhibition; PPI) in immune deficient mice (SCID) and the poly I:C model for developmental schizophrenia is correlated to irregular expression of Kisspeptin. Systemic IP injection of the Kisspeptin-derived peptide, Kp-10, enhanced PPI in a dose-dependent manner, while a Kisspeptin receptor antagonist reduced PPI. Furthermore, Kisspeptin can improve performance in several models of behavioral disorders including reduced PPI induced by poly I:C or MK-801, disturbed learning and memory in SCID mice or induced by MK-801, and behavioral despair. The effect of Kisspeptin on PPI was found to be mediated via neurotensin, a neuropeptide known to be related to several CNS disorders. Kp-10, the peptide used in our studies, is a 10 amino acid peptide and may not be stable enough to use in mental and cognitive disorders in humans. Therefore, we produced several Kp-10 derivatives with improved pharmaceutical properties; two of these analogs exhibit antipsychotic activity in vivo in the MK-801 mouse model for schizophrenia. The performance of one of these peptides, a 6 amino acid cyclic peptide, was better in this model than that of the original Kp-10. Our results indicate that this cyclic peptide might be a suitable drug candidate for disorders involving PPI, learning and memory or behavioral despair such as schizophrenia, depression, Alzheimer?s disease and other age-related dementias.
Michal Cardon completed her PhD, and started her postdoctoral studies in 2010 at the Weizmann Institute of Science. She has published more than 9 papers in reputed journals
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