OBJECTIVE(S): Depletion of thymus derived naive T-cells is a feature of HIV infection. Here the impact of HIV infection on the compartmentalization of recent thymic emigrants of (RTE) and naive T-cells was examined. METHODS: Peripheral blood mononuclear cells (PBMC) and lymphoid tissue (LT) from 43 HIV-infected patients and 12 controls were examined for RTE distribution by measuring coding joint T-cell receptor excisional circles (cjTREC) by PCR and naive and memory T-cell subsets and adhesion molecules (L-selection, LFA-1) by flow cytometry. RESULTS: In HIV-infected patients, the RTE as quantified by cjTRECs in CD4 LT cells were significantly higher than in PBMC. Their values, however, were less than in control subjects, in both the LT and PBMC compartments. This was associated with an increase in L-selectin and LFA-1 expression on LT derived T cells. In PBMC, a significant positive relationship between TREC and naive CD4 cells and an inverse relationship between TREC and cellular viral load (CVL) was observed. Whereas in LT, there was a positive relationship between cjTREC and both naive CD4 cell percentage and CVL. CONCLUSIONS: Collectively, the data suggests that LT is a significant reservoir for RTE. The RTE appeared to be entrapped in LT from HIV-infected subjects. Such entrapment is probably a response to the high viral load in these tissues. These observations may partially explain the decline in RTE observed in the peripheral blood of HIV-infected patients, and the delay in recovery of naive cells in blood after initiation of HAART.
OBJECTIVE(S): Depletion of thymus derived naive T-cells is a feature of HIV infection. Here the impact of HIV infection on the compartmentalization of recent thymic emigrants of (RTE) and naive T-cells was examined. METHODS: Peripheral blood mononuclear cells (PBMC) and lymphoid tissue (LT) from 43 HIV-infected patients and 12 controls were examined for RTE distribution by measuring coding joint T-cell receptor excisional circles (cjTREC) by PCR and naive and memory T-cell subsets and adhesion molecules (L-selection, LFA-1) by flow cytometry. RESULTS: In HIV-infected patients, the RTE as quantified by cjTRECs in CD4 LT cells were significantly higher than in PBMC. Their values, however, were less than in control subjects, in both the LT and PBMC compartments. This was associated with an increase in L-selectin and LFA-1 expression on LT derived T cells. In PBMC, a significant positive relationship between TREC and naive CD4 cells and an inverse relationship between TREC and cellular viral load (CVL) was observed. Whereas in LT, there was a positive relationship between cjTREC and both naive CD4 cell percentage and CVL. CONCLUSIONS: Collectively, the data suggests that LT is a significant reservoir for RTE. The RTE appeared to be entrapped in LT from HIV-infected subjects. Such entrapment is probably a response to the high viral load in these tissues. These observations may partially explain the decline in RTE observed in the peripheral blood of HIV-infected patients, and the delay in recovery of naive cells in blood after initiation of HAART.
Authors: B Autran; G Carcelain; T S Li; C Blanc; D Mathez; R Tubiana; C Katlama; P Debré; J Leibowitch Journal: Science Date: 1997-07-04 Impact factor: 47.728
Authors: Z Q Zhang; D W Notermans; G Sedgewick; W Cavert; S Wietgrefe; M Zupancic; K Gebhard; K Henry; L Boies; Z Chen; M Jenkins; R Mills; H McDade; C Goodwin; C M Schuwirth; S A Danner; A T Haase Journal: Proc Natl Acad Sci U S A Date: 1998-02-03 Impact factor: 11.205
Authors: D C Douek; R D McFarland; P H Keiser; E A Gage; J M Massey; B F Haynes; M A Polis; A T Haase; M B Feinberg; J L Sullivan; B D Jamieson; J A Zack; L J Picker; R A Koup Journal: Nature Date: 1998-12-17 Impact factor: 49.962
Authors: J M McCune; R Loftus; D K Schmidt; P Carroll; D Webster; L B Swor-Yim; I R Francis; B H Gross; R M Grant Journal: J Clin Invest Date: 1998-06-01 Impact factor: 14.808
Authors: M M Lederman; E Connick; A Landay; D R Kuritzkes; J Spritzler; M St Clair; B L Kotzin; L Fox; M H Chiozzi; J M Leonard; F Rousseau; M Wade; J D Roe; A Martinez; H Kessler Journal: J Infect Dis Date: 1998-07 Impact factor: 5.226
Authors: Pratip K Chattopadhyay; Daniel C Douek; Stephen J Gange; Karen R Chadwick; Marc Hellerstein; Joseph B Margolick Journal: AIDS Res Hum Retroviruses Date: 2006-06 Impact factor: 2.205
Authors: Reena Rajasuriar; Maelenn Gouillou; Tim Spelman; Tim Read; Jennifer Hoy; Matthew Law; Paul U Cameron; Kathy Petoumenos; Sharon R Lewin Journal: PLoS One Date: 2011-06-02 Impact factor: 3.240
Authors: Julia Drylewicz; Nienke Vrisekoop; Tendai Mugwagwa; Anne Bregje de Boer; Sigrid A Otto; Mette D Hazenberg; Kiki Tesselaar; Rob J de Boer; José A M Borghans Journal: PLoS One Date: 2016-03-24 Impact factor: 3.240
Authors: Andrea Hegedus; Samuel Nyamweya; Yan Zhang; Sheila Govind; Richard Aspinall; Alla Mashanova; Vincent A A Jansen; Hilton Whittle; Assan Jaye; Katie L Flanagan; Derek C Macallan Journal: J Infect Dis Date: 2014-05-05 Impact factor: 5.226