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  • Title: [Long-lasting behavioral effects of chronic neonatal treatment with ACTH (4-10) analogue semax in white rat pups].
    Author: Sebentsova EA, Denisenko AV, Levitskaia NG, Andreeva LA, Kamenskiĭ AA, Miasoedov NF.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 2005; 55(2):213-20. PubMed ID: 15895862.
    Abstract:
    It is well known that ACTH/MSH-like peptides (melanocortins) have neurotrophic and neuroprotective effects on the central and peripheral nervous systems in the early postnatal life. The aim of present work was to study consequences of the ACTH (4-10) analogue Semax influence on the developing brain. The work was carried out in white rat pups. The peptide (0.05 mg/kg, i/p) was injected daily on the 8th-21st postnatal days. Delayed long-lasting effects of such treatment on animal behavior were revealed. At the age of four to eight weeks, Semax-treated rats displayed elevated exploratory activity, decreased anxiety level and improved passive avoidance conditioning. The results suggest that neonatal Semax administration modulates the development of the central nervous system.
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