Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Gel Electrophoretic Separation of Pineal Gland Proteins of the Iropical Rodent Funambulus Pennanti


Affiliations
1 Pineal Research Laboratory, Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi – 221005, Uttar Pradesh, India
     

   Subscribe/Renew Journal


The investigation of pineal-specific proteins is not new but offers scope for identification of antigonadotropic compound(s). There is difference in the activities of the reproductively active and inactive phase pineal homogenates of seasonally breeding animals, e.g., squirrels. The present study aimed at checking the squirrel pineal proteins adopting gel-electrophoresis technique. Homogenate of the reproductively quiescent phase pineal homogenate separated into 14 fractions whereas that of reproductively active phase pineal presented 17 protein fractions (3 additional fractions). It is assumed that these three protein bands (which were not noted for the squirrel in reproductively inactive phase) are responsible for the antigonadal/ antigonadotropic effect of the pineal gland. The present study, though very preliminary in nature, has brought out the difference in the pattern of proteins of two different phases of the pineal gland- reproductively active and quiescent. The data throw open scope for extensive biochemical studies to decipher the physical and chemical nature and the properties of an anti-gonadotropic protein.

Keywords

Electrophoretic Separation, Pineal, Proteins.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Witebsky E, Reichner H. Die serologische spezifitat der Epiphyse. Zeitschrift fur immunitats forschung and experimentelle Therapie. 1933; 79:335.
  • Pun JY, Lombrozo L. Microelectrophoresis of brain and pineal proteins in polyacrylamide gel. Anal Biochem. 1964; 9:9–20. https://doi.org/10.1016/0003-2697(64)90079-X
  • Fajer A, Hoxter G, Fraga E. Electrophoretic pattern of soluble proteins of a pineal body extract. Nature (Lond.). 1962; 196:274. https://doi.org/10.1038/196274a0
  • Jouan P, Garreau A, Samperez S. Extraction et separation des peptides de la glande du mouton. Ann Endocrinol.1965; 26:535.
  • Collin JP, Meiniel A. Lorgane pineal etudes combines ultrastructurales cytochimiques (monoamines) at experimentales, chez Testudo mauritanica (L.) grains denses des cellules de la lignee «sensorielle» chez les Vertebes. Arch Anat Microsc Morphol Exp. 1971, 60:269.PMid:5316755
  • Kotaras PJ, Seamark RF. The effects of photoperiod and melatonin on protein synthesis and secretion by rat pineal glands in vitro. Advances in Pineal Research. Foldes A, Reiter RJ (Eds). London: John Libbey and Company, Ltd.; 1991. p. 123–6.
  • Sarkar R. Physiology of pineal active substance(s)/ hormone(s): Melatonin, serotonin and peptide(s)/ protein(s) in reproduction of Indian palm squirrel F. pennanti [Thesis]. Banaras Hindu University; 1995.
  • Laemmli UK. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature.1970; 227:680–5. https://doi.org/10.1038/227680a0 PMid:5432063
  • Pevet P. Secretory processes in the mammalian pinealocytes under natural and experimental conditions. In: The Pineal Gland of Vertebrates Including Man, J. Ariens Kapperes, P Pevet, editors. Prog Brain Res. North Holland: Elsevier; 1979. p. 149–94. https://doi.org/10.1016/S00796123(08)62920-9
  • Haldar-Misra, Pevet P. The influence of noradrenaline on the process of protein/peptide secretion in the mammalian pineal organ. Comparative in vitro studies. Cell Tiss Res.1982; 224:33–44. https://doi.org/10.1007/BF00217264
  • Haldar-Misra C, Pevet P. The influence of different 5-methoxyindoles on the process of protein/peptide secretion in the mouse pineal gland. An in vitro study.Cell Tiss Res. 1983; 230:113–26. https://doi.org/10.1007/ BF00216032 PMid:6189614
  • White WF, Hedlund MT, Weber GF, Rippel RM, Johnson ES, Wilber J. The pineal gland: A supplementary source of hypothalamic releasing hormones. Endocrinology 1974; 94:1422–6. https://doi.org/10.1210/endo-94-5-1422 PMid:4207300
  • Dogteron J, Snijdewint FGM, Pevet P, Bujis RM. On the presence of neuropeptides in the mammalian pineal gland and sub-commissural organ. In: The Pineal Gland of Vertebrates Including Man, Kapperes JA, Pevet P, editors.Prog Brain Res. North Holland: Elsevier; 1979. p. 465–70.
  • Dogteron J, Snijdewint FGM, Pevet P, Swab DF. Studies on the presence of vasopressin, oxytocin and vasotocin in the pineal gland, subcommisural organ and foetal pituitary gland: Failure to demonstrate vasotocin in mammals. J Endocrinol. 1980, 84:115–23. https://doi.org/10.1677/ joe.0.0840115
  • Vaughan MK. Arginine vasotocin and vertebrate reproductive.In: The Pineal Gland, Reproductive Effects. RJ Reiter, editor. Boca Raton: USA CRC Press; 1981.
  • Blask DE, Vaughan MK, Reiter RJ. Pineal peptides. In: The Pineal Gland. Relkin R, editor. New York: Elsevier Biomedical. 1983. p. 201–23.
  • Nieuwenhuis JJ. Argenine vasotocin (AVT), an alleged hormone of the mammalian pineal gland. Life Sci.1984; 35:1713–24. https://doi.org/10.1016/00243205(84)90267-4

Abstract Views: 231

PDF Views: 0




  • Gel Electrophoretic Separation of Pineal Gland Proteins of the Iropical Rodent Funambulus Pennanti

Abstract Views: 231  |  PDF Views: 0

Authors

Sweta Arora
Pineal Research Laboratory, Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi – 221005, Uttar Pradesh, India
Ratna Sarkar
Pineal Research Laboratory, Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi – 221005, Uttar Pradesh, India
Chandana Haldar
Pineal Research Laboratory, Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi – 221005, Uttar Pradesh, India

Abstract


The investigation of pineal-specific proteins is not new but offers scope for identification of antigonadotropic compound(s). There is difference in the activities of the reproductively active and inactive phase pineal homogenates of seasonally breeding animals, e.g., squirrels. The present study aimed at checking the squirrel pineal proteins adopting gel-electrophoresis technique. Homogenate of the reproductively quiescent phase pineal homogenate separated into 14 fractions whereas that of reproductively active phase pineal presented 17 protein fractions (3 additional fractions). It is assumed that these three protein bands (which were not noted for the squirrel in reproductively inactive phase) are responsible for the antigonadal/ antigonadotropic effect of the pineal gland. The present study, though very preliminary in nature, has brought out the difference in the pattern of proteins of two different phases of the pineal gland- reproductively active and quiescent. The data throw open scope for extensive biochemical studies to decipher the physical and chemical nature and the properties of an anti-gonadotropic protein.

Keywords


Electrophoretic Separation, Pineal, Proteins.

References





DOI: https://doi.org/10.18519/jer%2F2016%2Fv20%2F165444