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  • Electrophoresis, Polyacrylamide Gel  (3)
  • Biological Clocks/genetics/*physiology  (2)
  • 1
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    Stability, precision, and near-24-hour period of the human circadian pacemaker (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-26
    Description: Regulation of circadian period in humans was thought to differ from that of other species, with the period of the activity rhythm reported to range from 13 to 65 hours (median 25.2 hours) and the period of the body temperature rhythm reported to average 25 hours in adulthood, and to shorten with age. However, those observations were based on studies of humans exposed to light levels sufficient to confound circadian period estimation. Precise estimation of the periods of the endogenous circadian rhythms of melatonin, core body temperature, and cortisol in healthy young and older individuals living in carefully controlled lighting conditions has now revealed that the intrinsic period of the human circadian pacemaker averages 24.18 hours in both age groups, with a tight distribution consistent with other species. These findings have important implications for understanding the pathophysiology of disrupted sleep in older people.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Czeisler, C A -- Duffy, J F -- Shanahan, T L -- Brown, E N -- Mitchell, J F -- Rimmer, D W -- Ronda, J M -- Silva, E J -- Allan, J S -- Emens, J S -- Dijk, D J -- Kronauer, R E -- MO1-RR02635/RR/NCRR NIH HHS/ -- P01-AG09975/AG/NIA NIH HHS/ -- R01-GM53559/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Jun 25;284(5423):2177-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Circadian, Neuroendocrine, and Sleep Disorders Section, Division of Endocrinology, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10381883" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aging/*physiology ; Biological Clocks/genetics/*physiology ; Body Temperature ; Circadian Rhythm/genetics/*physiology ; Darkness ; Female ; Humans ; Hydrocortisone/blood ; Light ; Male ; Melatonin/blood ; Middle Aged ; Sleep
    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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    Is there an intrinsic period of the circadian clock? Response (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Czeisler, C A -- Dijk, D J -- Kronauer, R E -- Brown, E N -- Duffy, J F -- Allan, J S -- Shanahan, T L -- Rimmer, D W -- Ronda, J M -- Mitchell, J F -- Silva, E J -- Emens, J S -- New York, N.Y. -- Science. 2000 May 19;288(5469):1174-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Circadian, Neuroendocrine, and Sleep Disorders Section, Division of Endocrinology, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11536927" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Clocks/genetics/*physiology ; Chronobiology Phenomena ; Circadian Rhythm/genetics/*physiology ; Darkness ; Humans ; Sleep
    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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    A new HTLV-III/LAV encoded antigen detected by antibodies from AIDS patients (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-11-15
    Description: A newly identified protein from HTLV-III/LAV, the virus implicated as the etiologic agent of the acquired immune deficiency syndrome, was studied. This protein, which has a molecular weight of 27,000 (p27), was shown by amino acid sequencing to have a coding origin 3' to the env gene on the HTLV-III genome. The presence of antibodies to p27 in virus-exposed individuals indicated that this gene is functional in the natural host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allan, J S -- Coligan, J E -- Lee, T H -- McLane, M F -- Kanki, P J -- Groopman, J E -- Essex, M -- 2T32-CA09031/CA/NCI NIH HHS/ -- CA23885/CA/NCI NIH HHS/ -- CA37466/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):810-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997921" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology/microbiology ; Amino Acid Sequence ; Animals ; Antibodies, Viral/*immunology ; Antibody Formation ; Antigens, Viral/*immunology ; Deltaretrovirus/genetics/*immunology ; Electrophoresis, Polyacrylamide Gel ; Haplorhini/microbiology ; Humans ; Male ; Molecular Weight ; Repetitive Sequences, Nucleic Acid
    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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  • 4
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    Virus envelope protein of HTLV-III represents major target antigen for antibodies in AIDS patients (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-05-31
    Description: In this study, two glycoproteins (gp160 and gp120) that are encoded by human T-cell lymphoma virus type III (HTLV-III) were the antigens most consistently recognized by antibodies found in patients with the acquired immune deficiency syndrome (AIDS) and with the AIDS-related complex (ARC) and in healthy homosexual males. The techniques used to detect the glycoproteins were radioimmunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (RIP/SDS-PAGE). Although most antibody-positive samples from ARC patients and from healthy homosexual males also reacted with the virus core protein p24, less than half of the AIDS patients revealed a positive band with p24 under the same conditions. The ability to detect antibodies against a profile of both the major env gene encoded antigens and the gag gene encoded antigens suggests that the RIP/SDS-PAGE may be a valuable confirmatory assay for establishing the presence or absence of antibodies to HTLV-III in human serum samples.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barin, F -- McLane, M F -- Allan, J S -- Lee, T H -- Groopman, J E -- Essex, M -- 2T32-CA09031/CA/NCI NIH HHS/ -- CA 13885/CA/NCI NIH HHS/ -- CA 37466/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 May 31;228(4703):1094-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2986291" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology/microbiology ; Antibodies, Viral/*immunology ; Antibody Specificity ; Antigens, Viral/*immunology ; Deltaretrovirus/*immunology ; Electrophoresis, Polyacrylamide Gel ; Humans ; Immunologic Techniques ; Molecular Weight ; Viral Envelope Proteins/*immunology
    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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  • 5
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    New human T-lymphotropic retrovirus related to simian T-lymphotropic virus type III (STLV-IIIAGM) (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-04-11
    Description: This report describes serologic evidence for a virus similar to that known as simian T-lymphotropic virus type III of African Green monkeys (STLV-IIIAGM) infecting apparently healthy people in Senegal, West Africa, and the isolation of virus from these individuals. Serum samples from selected healthy West African people showed unusual serologic profiles when tested with antigens of HTLV-III/LAV, the etiologic agent of AIDS, and of STLV-IIIAGM. The samples reacted strongly with all of the major viral antigens of STLV-IIIAGM but showed variable or no reactivity with the major viral antigens of HTLV-III/LAV by radioimmunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. A new human T-lymphotropic virus (HTLV-IV) isolated from these people was grown in vitro and shown to have retroviral type particles, growth characteristics, and major viral proteins similar to those of the STLV-III and HTLV-III/LAV group of retroviruses. The gp120/160, gp32, p64, p55, p53, p24, and p15 proteins precipitated were the same size as and reactive with STLV-IIIAGM proteins. The serologic data suggest that this virus shares more common epitopes with STLV-IIIAGM than with the prototype HTLV-III/LAV that infects people in the United States and Europe. Further study of this virus and of the origin of the HTLV-III/LAV group of viruses may expand our understanding of the human AIDS virus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kanki, P J -- Barin, F -- M'Boup, S -- Allan, J S -- Romet-Lemonne, J L -- Marlink, R -- McLane, M F -- Lee, T H -- Arbeille, B -- Denis, F -- CA 18216/CA/NCI NIH HHS/ -- CA 37466/CA/NCI NIH HHS/ -- ST 32 CA9382/ST/OHS HRSA HHS/ -- New York, N.Y. -- Science. 1986 Apr 11;232(4747):238-43.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3006256" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/microbiology/transmission ; Animals ; Antibodies, Viral/immunology ; Antigens, Viral/immunology ; Cercopithecus aethiops/microbiology ; Cross Reactions ; Deltaretrovirus/immunology/*isolation & purification/ultrastructure ; Electrophoresis, Polyacrylamide Gel ; Enzyme-Linked Immunosorbent Assay ; Female ; Humans ; Male ; Microscopy, Electron ; Retroviridae/immunology/isolation & purification/ultrastructure ; Retroviridae Infections/immunology/microbiology ; Senegal ; T-Lymphocytes/microbiology ; United States
    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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