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  • 1
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    HIV-1 Langerhans' cell tropism associated with heterosexual transmission of HIV (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-03-01
    Description: Heterosexual transmission by vaginal intercourse accounts for most transmission of human immunodeficiency virus-type 1 (HIV-1) in Africa and Asia but is less important in the HIV-1 epidemics of the United States and Western Europe. Epithelial Langerhans' cells (LCs) represent a possible source of initial cell contact for vaginal infection. Fifteen primary isolates of HIV-1 from U.S. homosexuals and 18 HIV-1 isolates from Thailand heterosexuals were evaluated for growth in LCs of U.S. origin. All the viruses from the Thai heterosexuals, which were subtype E, grew more efficiently in the LCs than any of the viruses from the U.S. homosexuals, which are subtype B. These results suggest that LC tropism is associated with the efficiency of heterosexual transmission of HIV.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Soto-Ramirez, L E -- Renjifo, B -- McLane, M F -- Marlink, R -- O'Hara, C -- Sutthent, R -- Wasi, C -- Vithayasai, P -- Vithayasai, V -- Apichartpiyakul, C -- Auewarakul, P -- Pena Cruz, V -- Chui, D S -- Osathanondh, R -- Mayer, K -- Lee, T H -- Essex, M -- 5 D43 TW0004/TW/FIC NIH HHS/ -- CA 39805/CA/NCI NIH HHS/ -- HL 33774/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1996 Mar 1;271(5253):1291-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard AIDS Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638113" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cells, Cultured ; HIV Core Protein p24/analysis ; HIV Infections/*transmission/virology ; HIV-1/classification/*growth & development/isolation & purification ; Homosexuality, Male ; Humans ; Langerhans Cells/*virology ; Macrophages/virology ; Male ; Monocytes/virology ; *Sexual Behavior ; Sexually Transmitted Diseases, Viral/*transmission/virology ; T-Lymphocytes/virology ; Thailand ; United States ; Virus Replication
    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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    Phospholipid transfer protein (PLTP) deficiency accelerates memory dysfunction through altering amyloid precursor protein (APP) processing in a mouse model of Alzheimer's disease (2015)
    Oxford University Press
    Details
    Publication Date: 2015-09-12
    Description: Phospholipid transfer protein (PLTP) is a widely expressed lipid transfer protein participating in the transport of cholesterol and other lipids in the plasma and peripheral tissues. Recently, elevated amyloid β (Aβ) in young and aged PLTP-deficient brains had been reported. However, the role of PLTP in amyloid precursor protein (APP) processing and Alzheimer's disease (AD) pathology remains elusive. Here we first found that deficiency of PLTP accelerated memory dysfunction in APP/PS1E9 AD model mice at the age of 3 months. Further characterization showed that PLTP deficiency increased soluble Aβ peptides, and intracellular accumulation of Aβ was illustrated, which might be due to disrupted APP turnover and the enhanced amyloidogenic pathway. Besides, reduced brain-derived neurotrophic factor (BDNF) was found in PLTP-deficient APP/PS1E9 mice, and the BDNF level was negatively correlated with Aβ42 content, instead of Aβ40 content. In addition, autophagic dysfunction was found in the PLTP-deficient APP/PS1E9 mice. Our data presented a novel model to link phospholipid metabolism to APP processing and also suggested that PLTP played an important role in Aβ metabolism and would be useful to further elucidate functions of PLTP in AD susceptibility.
    Print ISSN: 0964-6906
    Electronic ISSN: 1460-2083
    Topics: Biology , Medicine
    Published by Oxford University Press
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