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| Content Provider | PubMed Central |
|---|---|
| Author | Ofotokun, Ighovwerha Titanji, Kehmia Vikulina, Tatyana Roser-page, Susanne Yamaguchi, Masayoshi Majd, Zayzafoon Williams, Ifor R. Weitzmann, M. Neale |
| Abstract | HIV infection causes bone loss. We previously reported that immunosuppression-mediated B-cell production of receptor activator of NF-κB ligand (RANKL) coupled with decline in osteoprotegerin correlate with decreased bone mineral density (BMD) in untreated HIV-infection. Paradoxically, antiretroviral therapy (ART) worsens bone loss although existing data suggest that such loss is largely independent of specific antiretroviral regimen. This led us to hypothesize that skeletal deterioration following HIV disease reversal with ART may be related to T-cell repopulation and/or immune-reconstitution. Here we transplant T cells into immunocompromised mice to mimic ART-induced T-cell expansion. T-cell reconstitution elicits RANKL and TNFα production by B-cells and/or T-cells, accompanied by enhanced bone resorption and BMD loss. Reconstitution of TNFα- or RANKL-null T-cells and pharmacological TNFα antagonist all protect cortical, but not trabecular bone, revealing complex effects of T-cell-reconstitution on bone turnover. These findings suggest T-cell repopulation and/or immune-reconstitution as putative mechanisms for bone loss following ART initiation. |
| Related Links | http://dx.doi.org/10.1038/ncomms9282 |
| Ending Page | 8282 |
| Page Count | 1 |
| Starting Page | 8282 |
| File Format | |
| ISSN | 20411723 |
| e-ISSN | 20411723 |
| Journal | Nature communications |
| Volume Number | 6 |
| Language | English |
| Publisher Date | 2015-09-01 |
| Access Restriction | Open |
| Subject Keyword | Biochemistry, Genetics and Molecular Biology(all) Physics and Astronomy(all) Chemistry(all) Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Physics and Astronomy Biochemistry, Genetics and Molecular Biology |
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