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  • 1
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    Melatonin production: proteasomal proteolysis in serotonin N-acetyltransferase regulation (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-03-21
    Description: The nocturnal increase in circulating melatonin in vertebrates is regulated by 10- to 100-fold increases in pineal serotonin N-acetyltransferase (AA-NAT) activity. Changes in the amount of AA-NAT protein were shown to parallel changes in AA-NAT activity. When neural stimulation was switched off by either light exposure or L-propranolol-induced beta-adrenergic blockade, both AA-NAT activity and protein decreased rapidly. Effects of L-propranolol were blocked in vitro by dibutyryl adenosine 3',5'-monophosphate (cAMP) or inhibitors of proteasomal proteolysis. This result indicates that adrenergic-cAMP regulation of AA-NAT is mediated by rapid reversible control of selective proteasomal proteolysis. Similar proteasome-based mechanisms may function widely as selective molecular switches in vertebrate neural systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gastel, J A -- Roseboom, P H -- Rinaldi, P A -- Weller, J L -- Klein, D C -- New York, N.Y. -- Science. 1998 Feb 27;279(5355):1358-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section on Neuroendocrinology, Laboratory of Developmental Neurobiology, National Institute of Child Health and Human Development (NICHD), National Institutes of Health, Bethesda, MD 20892-4480, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9478897" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic beta-Agonists/pharmacology ; Adrenergic beta-Antagonists/pharmacology ; Animals ; Arylamine N-Acetyltransferase/*metabolism ; Bucladesine/pharmacology ; Cyclic AMP/metabolism ; Cysteine Endopeptidases/*metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Isoproterenol/pharmacology ; Light ; Melatonin/*biosynthesis ; Multienzyme Complexes/*metabolism ; Pineal Gland/cytology/drug effects/enzymology/*metabolism ; Propranolol/pharmacology ; Proteasome Endopeptidase Complex ; Rats ; Receptors, Adrenergic, beta/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Pineal serotonin N-acetyltransferase: expression cloning and molecular analysis (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-12-08
    Description: Pineal serotonin N-acetyltransferase (arylalkylamine N-acetyltransferase, or AA-NAT) generates the large circadian rhythm in melatonin, the hormone that coordinates daily and seasonal physiology in some mammals. Complementary DNA encoding ovine AA-NAT was cloned. The abundance of AA-NAT messenger RNA (mRNA) during the day was high in the ovine pineal gland and somewhat lower in retina. AA-NAT mRNA was found unexpectedly in the pituitary gland and in some brain regions. The night-to-day ratio of ovine pineal AA-NAT mRNA is less than 2. In contrast, the ratio exceeds 150 in rats. AA-NAT represents a family within a large superfamily of acetyltransferases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coon, S L -- Roseboom, P H -- Baler, R -- Weller, J L -- Namboodiri, M A -- Koonin, E V -- Klein, D C -- New York, N.Y. -- Science. 1995 Dec 8;270(5242):1681-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section on Neuroendocrinology, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502081" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Arylamine N-Acetyltransferase/*genetics/metabolism ; Brain/metabolism ; Cell Line ; Circadian Rhythm ; *Cloning, Molecular ; DNA, Complementary/genetics ; Molecular Sequence Data ; Pineal Gland/*enzymology/metabolism ; Pituitary Gland/metabolism ; RNA, Messenger/genetics/metabolism ; Rats ; Retina/metabolism ; Sequence Alignment ; Sheep ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Pineal serotonin N-acetyltransferase activity: abrupt decrease in adenosine 3',5'-monophosphate may be signal for "turnoff" (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-20
    Description: Dispersed pinealocytes have been used to study the role of adenosine 3',5'-monophosphate (cyclic AMP) in the "turnoff" of N-acetyltransferace activity. Activity was first stimulated 100-fold by treating cells with 1-norepinephrine. 1-Propranolol acted stereospecifically to rapidly reverse this, resulting in a 70 percent loss of enzyme activity within 15 minutes. An even more rapid 1-propranolol-induced decreased in cyclic AMP also occurred. This together with the observation that the inhibitory effect of 1-propranolol on N-acetyltransferase was blocked by dibutyryl cyclic AMP and phosphodiesterase inhibitors indicate that an abrupt decrease in cyclic AMP may be the signal for the rapid decrease in pineal N-acetyltransferase activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, D C -- Buda, M J -- Kapoor, C L -- Krishna, G -- New York, N.Y. -- Science. 1978 Jan 20;199(4326):309-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/202027" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/antagonists & inhibitors/*metabolism ; Animals ; Bucladesine/pharmacology ; Cyclic AMP/*metabolism ; In Vitro Techniques ; Phosphodiesterase Inhibitors/pharmacology ; Pineal Gland/*metabolism ; Propranolol/antagonists & inhibitors/pharmacology ; Rats ; Serotonin
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Melatonin and puberty (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, D C -- New York, N.Y. -- Science. 1984 Apr 6;224(4644):6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701534" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Child ; Humans ; Male ; Melatonin/pharmacology/*physiology ; Pineal Gland/physiology ; *Puberty ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Pineal N-acetyltransferase is inactivated by disulfide-containing peptides: insulin is the most potent (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-07-31
    Description: Pineal N-acetyltransferase can be inactivated in broken cell preparations by cystamine through a mechanism of thiol-disulfide exchange. Some, but not all, disulfide-containing peptides can inactivate this enzyme; the most potent inactivator is insulin. These findings suggest that a disulfide-containing peptide with high reactivity toward N-acetyltransferase may participate in the intracellular regulation of this enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Namboodiri, M A -- Favilla, J T -- Klein, D C -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):571-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017937" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/*antagonists & inhibitors ; Animals ; Disulfides/pharmacology ; Dithiothreitol/pharmacology ; Hormones/pharmacology ; Hydrogen-Ion Concentration ; Insulin/*pharmacology ; Kinetics ; Male ; Peptides/*pharmacology ; Pineal Gland/*enzymology ; Rats ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    5-hydroxytryptophan elevates serum melatonin (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-08-12
    Description: Daytime administration of 5-hydroxytryptophan to sheep elevated serum melatonin more than sevenfold within 2 hours. This suggests that administration of 5-hydroxytryptophan could be used as the basis of a clinical test of pineal function and that melatonin might mediate some clinical effects of 5-hydroxytryptophan.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Namboodiri, M A -- Sugden, D -- Klein, D C -- Mefford, I N -- New York, N.Y. -- Science. 1983 Aug 12;221(4611):659-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6867734" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Humans ; Male ; Melatonin/*blood ; Pineal Gland/physiology ; Rats ; Serotonin/*pharmacology ; Sheep ; Tryptophan/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Biosynthesis of biopterin: adrenergic cyclic adenosine monophosphate-dependent inhibition in the pineal gland (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-09-04
    Description: Pineal glands in organ culture synthesize and release biopterin and are able to maintain concentrations of biopterin occurring in vivo for up to 54 hours in vitro. The intracellular biopterin content is reduced 50 percent by treatment with l-norepinephrine or cyclic adenosine monophosphate derivatives, but not by d-norepinephrine. This is an indication that biopterin levels are regulated by an adrenergic cyclic adenosine monophosphate-dependent mechanism. The decline in tissue biopterin content, produced mainly by inhibited of biosynthesis, is maximal at 6 hours and is not associated with either an increase in biopterin release or a shift in the reduction state of the biopterin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kapatos, G -- Kaufman, S -- Weller, J L -- Klein, D C -- New York, N.Y. -- Science. 1981 Sep 4;213(4512):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6168019" target="_blank"〉PubMed〈/a〉
    Keywords: 1-Methyl-3-isobutylxanthine/pharmacology ; Animals ; Biopterin/*biosynthesis ; Bucladesine/*pharmacology ; Guanosine Triphosphate/metabolism ; Norepinephrine/*pharmacology ; Organ Culture Techniques ; Pineal Gland/*metabolism ; Pteridines/*biosynthesis ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Rhodopsin kinase activity in the mammalian pineal gland and other tissues (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-12
    Description: Rhodopsin kinase, an enzyme involved in photochemical transduction in the retina, has been found in the mammalian pineal gland in amounts equal to those in the retina; other tissues had 7 percent of this amount, or less. This finding suggests that, in mammals, rhodopsin kinase functions in the pineal gland and other tissues to phosphorylate rhodopsin-like integral membrane receptors and is thereby involved in signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Somers, R L -- Klein, D C -- New York, N.Y. -- Science. 1984 Oct 12;226(4671):182-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6091271" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/enzymology ; *Eye Proteins ; G-Protein-Coupled Receptor Kinase 1 ; Light ; Lung/enzymology ; Phosphorylation ; Pineal Gland/*enzymology ; Pituitary Gland/enzymology ; Protein Kinase Inhibitors ; Protein Kinases/*metabolism ; Rats ; Receptors, Adrenergic, beta/metabolism ; Retina/enzymology ; Tissue Distribution ; Zinc/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Pinealocyte projections into the mammalian brain revealed with S-antigen antiserum (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-02-14
    Description: Neural processes from mammalian pinealocytes have been discovered in several brain areas. These processes were visualized immunocytochemically in the Djungarian hamster, Phodopus sungorus, with an antiserum against bovine retinal S-antigen and traced as far as the region of the posterior commissure and habenular nuclei. This result indicates that pineal-to-brain connections exist in the mammal, and that the mammalian pineal gland, currently thought of only as a neuroendocrine organ, may communicate directly with select brain regions by way of these projections. The existence of mammalian pinealocyte projections is consistent with the view that these cells are not of glial origin but are derivatives of photoreceptor cells of the pineal complex of lower vertebrates that transmit signals to the brain by neural projections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korf, H W -- Oksche, A -- Ekstrom, P -- Gery, I -- Zigler, J S Jr -- Klein, D C -- New York, N.Y. -- Science. 1986 Feb 14;231(4739):735-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3454660" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/*analysis ; Arrestin ; Cricetinae/*anatomy & histology ; Nerve Tissue Proteins/immunology/*metabolism ; Neural Pathways ; Pineal Gland/*cytology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Circadian lncRNAs in the pineal gland [Cell Biology] (2012)
    National Academy of Sciences
    Details
    Publication Date: 2012-08-15
    Description: Long noncoding RNAs (lncRNAs) play a broad range of biological roles, including regulation of expression of genes and chromosomes. Here, we present evidence that lncRNAs are involved in vertebrate circadian biology. Differential night/day expression of 112 lncRNAs (0.3 to 〉50 kb) occurs in the rat pineal gland, which is the...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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