Results 261 to 270 of about 519,483 (296)
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Timekeeping by the Pineal Gland
Science, 1977N Acetyltransferase, an enzyme involved in melatonin production in the pineal gland, exhibits a circadian rhythm in chickens with peak values in the dark-time and low values during the light-time, commencing at lights-on.
Jerome B. Riebman +2 more
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2022
Pineal gland secretes the hormone melatonin at night with a circadian rhythm. The synthesis and secretion of melatonin are stimulated at night by norepinephrine released by sympathetic postganglionic neurons projecting from the superior cervical ganglia.
Solange Castro, Afeche +2 more
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Pineal gland secretes the hormone melatonin at night with a circadian rhythm. The synthesis and secretion of melatonin are stimulated at night by norepinephrine released by sympathetic postganglionic neurons projecting from the superior cervical ganglia.
Solange Castro, Afeche +2 more
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The Pharmacology of the Pineal Gland
Annual Review of Pharmacology and Toxicology, 1976Only recently have a sufficient number of publications been available to legitimize a review of the pharmacology of the mammalian pineal organ. Two decades ago Kitay & Altschule reviewed the world literature on pineal physiology, which comprises several thousand papers, and concluded only that removal of the pineal, or administration of pineal extracts,
Richard J. Wurtman, Kenneth P. Minneman
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2009
Tumors of the pineal region represent approximately 1% of all brain tumors and 3–10% of pediatric brain tumors. A variety of tumors may involve this region, reflecting the complex histology and anatomy of the pineal gland. Tumors from the intrinsic pineocytes, designated pineal parenchymal tumors, show a spectrum of differentiation from the well ...
M. Beatriz S. Lopes +1 more
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Tumors of the pineal region represent approximately 1% of all brain tumors and 3–10% of pediatric brain tumors. A variety of tumors may involve this region, reflecting the complex histology and anatomy of the pineal gland. Tumors from the intrinsic pineocytes, designated pineal parenchymal tumors, show a spectrum of differentiation from the well ...
M. Beatriz S. Lopes +1 more
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1985
Since the first description of the pineal gland over 2000 years ago by the anatomist Herophilus, the function and reputation of this tiny organ have been associated more with philosophical conjecture than with scientific foundation. Early anatomists regarded the pineal gland as “the valve that controlled the flow of memories, stored in the rear brain ...
Edward A. Zbella, Norbert Gleicher
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Since the first description of the pineal gland over 2000 years ago by the anatomist Herophilus, the function and reputation of this tiny organ have been associated more with philosophical conjecture than with scientific foundation. Early anatomists regarded the pineal gland as “the valve that controlled the flow of memories, stored in the rear brain ...
Edward A. Zbella, Norbert Gleicher
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The pineal gland and melatonin
2010Abstract The pineal gland transduces light–dark cycles for the timing of body rhythms by secretion of melatonin, an endogenous indoleamine derived from tryptophan, the concentrations of which in plasma and cerebrospinal fluid are up to 100 times higher at night than in the daytime. This exerts its effects through transmembrane, G-protein
J. Arendt, Timothy M. Cox
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1970
Publisher Summary This chapter discusses the effect of pineal gland on mammary development and activity. While no direct evidence of any effect on milk secretion was available, there was proof that the pineal can inhibit the pituitary and its luteotropic activity, and further studies on the pineal in relation to milk secretion were called for.
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Publisher Summary This chapter discusses the effect of pineal gland on mammary development and activity. While no direct evidence of any effect on milk secretion was available, there was proof that the pineal can inhibit the pituitary and its luteotropic activity, and further studies on the pineal in relation to milk secretion were called for.
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Chronobiology International, 2006
The pineal gland plays a key role in the control of the daily and seasonal rhythms in most vertebrate species. In mammals, rhythmic melatonin (MT) release from the pineal gland is controlled by the suprachiasmatic nucleus via the sympathetic nervous system.
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The pineal gland plays a key role in the control of the daily and seasonal rhythms in most vertebrate species. In mammals, rhythmic melatonin (MT) release from the pineal gland is controlled by the suprachiasmatic nucleus via the sympathetic nervous system.
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Ultrastructure of the pineal gland of the fox
American Journal of Anatomy, 1982AbstractThe ultrastructure of the pineal gland of the fox was examined and compared with that of other mammals. The pineal gland of the fox is composed of two different populations of pinealocytes (I and II). The pinealocytes I were distributed homogeneously throughout the parenchyma, while pinealocytes II were located generally near blood vessels.
Michal Karasek, John T. Hansen
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Letter to the Editor: Dysmenorrhea and the Pineal Gland
International Journal of Neuroscience, 1992(1992). Letter to the Editor: Dysmenorrhea and the Pineal Gland. International Journal of Neuroscience: Vol. 65, No. 1-4, pp. 177-181.
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