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  • 1
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    Obesity and metabolic syndrome in circadian Clock mutant mice (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-04-23
    Description: The CLOCK transcription factor is a key component of the molecular circadian clock within pacemaker neurons of the hypothalamic suprachiasmatic nucleus. We found that homozygous Clock mutant mice have a greatly attenuated diurnal feeding rhythm, are hyperphagic and obese, and develop a metabolic syndrome of hyperleptinemia, hyperlipidemia, hepatic steatosis, hyperglycemia, and hypoinsulinemia. Expression of transcripts encoding selected hypothalamic peptides associated with energy balance was attenuated in the Clock mutant mice. These results suggest that the circadian clock gene network plays an important role in mammalian energy balance.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764501/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764501/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turek, Fred W -- Joshu, Corinne -- Kohsaka, Akira -- Lin, Emily -- Ivanova, Ganka -- McDearmon, Erin -- Laposky, Aaron -- Losee-Olson, Sue -- Easton, Amy -- Jensen, Dalan R -- Eckel, Robert H -- Takahashi, Joseph S -- Bass, Joseph -- AG11412/AG/NIA NIH HHS/ -- AG18200/AG/NIA NIH HHS/ -- DK02675/DK/NIDDK NIH HHS/ -- DK26356/DK/NIDDK NIH HHS/ -- HL59598/HL/NHLBI NIH HHS/ -- HL75029/HL/NHLBI NIH HHS/ -- K08 DK002675/DK/NIDDK NIH HHS/ -- P01 AG011412/AG/NIA NIH HHS/ -- R01 AG018200/AG/NIA NIH HHS/ -- R01 DK026356/DK/NIDDK NIH HHS/ -- R01 HL059598/HL/NHLBI NIH HHS/ -- R01 HL075029/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2005 May 13;308(5724):1043-5. Epub 2005 Apr 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, Northwestern University, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15845877" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes/pathology ; Animals ; Body Weight ; Brain/metabolism ; CLOCK Proteins ; *Circadian Rhythm ; Dietary Fats/administration & dosage ; Energy Intake ; *Energy Metabolism ; *Feeding Behavior ; Hepatocytes/pathology ; Hyperglycemia ; Hyperlipidemias ; Insulin/blood ; Leptin/blood ; Metabolic Syndrome X/genetics/*physiopathology ; Mice ; Mice, Inbred C57BL ; Motor Activity ; Mutation ; Neuropeptides/genetics/metabolism ; Obesity/genetics/*physiopathology ; Trans-Activators/*genetics/*physiology ; Weight Gain
    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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    Splitting of the circadian rhythm of activity is abolished by unilateral lesions of the suprachiasmatic nuclei (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-02-26
    Description: The circadian rhythm of activity in vertebrates often splits into two components after continuous exposure to constant light. This observation suggests that at least two circadian pacemakers underlie the activity rhythm. After unilateral ablation of the hypothalamic suprachiasmatic nuclei in hamsters, the splitting phenomenon was eliminated and a single rhythm of activity was established. The period of the new circadian activity rhythm different from the periods of the split rhythm and that preceding the split. These results suggest an interaction between the bilaterally paired suprachiasmatic nuclei in the generation of the circadian rhythm of activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pickard, G E -- Turek, F W -- HD-09885/HD/NICHD NIH HHS/ -- HD-12622/HD/NICHD NIH HHS/ -- K04 HD-00249/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 26;215(4536):1119-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063843" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Circadian Rhythm ; Cricetinae ; Functional Laterality ; Hypothalamus/*physiology ; Motor Activity ; Supraoptic Nucleus/*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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  • 3
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    Multiple circadian oscillators regulate the timing of behavioral and endocrine rhythms in female golden hamsters (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-17
    Description: A single daily "surge" in pituitary luteinizing hormone release was observed in ovariectomized-estrogen-treated hamsters expressing an intact circadian rhythm of locomotor activity. In contrast, two luteinizing hormone surges occurred within a single 24-hour period in hamsters whose activity rhythm had dissociated or "split" into two distinct components. These observations indicate that both behavioral and endocrine circadian rhythms are regulated by the same multioscillator system, which seems to be composed of at least two distinct circadian oscillators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Swann, J M -- Turek, F W -- HD-07068/HD/NICHD NIH HHS/ -- HD-09885/HD/NICHD NIH HHS/ -- K04 HD-00249/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1985 May 17;228(4701):898-900.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/4001926" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Castration ; *Circadian Rhythm ; Cricetinae ; Estradiol/pharmacology ; Female ; Luteinizing Hormone/blood/*secretion ; Mesocricetus ; Motor Activity/*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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