Main areas of research:

Circadian rhythm and neuroendorcrinology

Interests/keywords:

clock genes, anterior pituitary hormone, ovarian steroid hormones

Current title/position:

associate researcher

Collaborators:

Dr Marc E Freeman
Dr Raphael Escorsim Szawka
Dr Cleyde Helena Vanessa Vega
Dr Arthuro Iglesias
Dr Ana Maria de Lauro Castrucci

Publications:

1. KENNETT JE ; POLETINI, M. O. ; FITCH C ; FREEMAN ME . Antagonism of Oxytocin Prevents Suckling- and Estradiol-Induced, But Not Progesterone-Induced, Secretion of Prolactin. Endocrinology (Philadelphia), v. 150, p. 2292-2299, 2009.
2. KENNETT JE ; POLETINI, M. O. ; FREEMAN ME . Vasoactive intestinal polypeptide modulates the estradiol-induced prolactin surge by entraining oxytocin neuronal activity. Brain Research, v. 1197, p. 65-73, 2008.
3. POLETINI, M. O. ; McKee DT ; KENNETT JE ; Dister J ; FREEMAN ME . Knockdown of clock genes in the suprachiasmatic nucleus blocks prolactin surges and alters FRA expression in the locus coeruleus of female rats. American Journal of Physiology. Endocrinology and Metabolism, v. 293, p. 1325-1334, 2007.
4. McKee DT ; POLETINI, M. O. ; Bertram R. ; FREEMAN ME . Oxytocin action at the lactotroph is required for prolactin surges in cervically stimulated ovariectomized rats. Endocrinology (Philadelphia), v. 148, p. 4649-4657, 2007.
5. HELENA, C. V. V. ; POLETINI, M. O. ; Sanvitto, GL ; Hayashis, S ; FRANCI, C. R. ; FRANCI, J. A. A. . Changes in alpha-estradiol receptor and progesterone receptor expression in the. Journal of Endocrinology, v. 188, p. 155-165, 2006.
6. POLETINI, M. O. ; SZAWKA, R. E. ; FRANCI, C. R. ; FRANCI, J. A. A. . Ovarian steroids but not the locus coeruleus regulate stress-induced prolactin secretion in female rats. Journal of Endocrinology, v. 18, p. 938-948, 2006.
7. Sellix MT ; Egli M ; POLETINI, M. O. ; McKee DT ; Bosworth MD ; Fitch CA ; FREEMAN ME . Anatomical and functional characterization of clock gene expression in neuroendocrine dopaminergic neurons. American Journal of Physiology. Regulatory, Integrative and Comparative Physiology, v. 290, p. 1309-1323, 2006.
8. POLETINI, M. O. ; SZAWKA, R. E. ; FRANCI, C. R. ; FRANCI, J. A. A. . Role of the locus coeruleus in the prolactin secretion of female rats. Brain Research Bulletin, v. 63, p. 331-338, 2004.
9. POLETINI, M. O. ; SZAWKA, R. E. ; FRANCI, C. R. ; VEIGA, M. D. ; FRANCI, J. A. A. . A method to study preovulatory surges of gonadotropins. Brain Research Protocols, v. 12, p. 41-48, 2003.