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Published on: December 3, 2019
BMD is reduced in HIV-infected men irrespective of treatment
1Department of Infectious Disease, Hôpital Tenon, Paris, France.
Insights
HIV-infected patients experience decreased bone density regardless of antiretroviral therapy. Low body mass and increased bone resorption markers are linked to lower bone density in these individuals.
Area of Science:
- Bone Metabolism and HIV Research
- Endocrinology and Osteoporosis
Background:
- Osteoporosis is a recognized complication in HIV-infected (HIV+) patients.
- Previous research suggested a potential link between osteoporosis and protease-inhibitor (PI) treatments in HIV+ individuals.
Purpose of the Study:
- To assess bone density in HIV+ men receiving different antiretroviral therapies (with or without PIs) and untreated HIV+ men.
- To investigate the relationship between bone density, HIV treatments, body composition, and bone remodeling markers.
Main Methods:
- Compared bone mineral density (BMD) Z-scores of HIV+ men (treated and untreated) with age-matched HIV-negative controls.
- Analyzed correlations between BMD, body mass index (BMI), lipodystrophy, and bone remodeling markers (bone alkaline phosphatase, urinary cross-laps/Cr, TNFalpha).
Main Results:
- HIV+ patients exhibited significantly lower BMD at the lumbar spine and femoral neck compared to controls.
- The prevalence of osteoporosis was higher in HIV+ patients (16%) versus HIV-negative individuals (4%).
- Low BMI and elevated bone resorption markers were associated with decreased bone density in HIV+ patients, irrespective of treatment status.
Conclusions:
- HIV infection, not antiretroviral therapy, is associated with decreased bone density.
- Low bone density in HIV+ patients is linked to lower body weight and increased bone resorption.
- Further research is needed to understand the mechanisms and management of osteoporosis in HIV+ individuals.
Unlabelled:
Osteoporosis has be reported to be a complication of active antiretroviral therapy of HIV infection. We studied 148 HIV-infected men stratified according to their treatment. Our data show that these patients have an average 9% decreased BMD, irrespective of their treatment. Low body mass index and high resorption markers were associated with low bone density.
Introduction:
Osteoporosis has been reported in HIV-infected (HIV+) patients, and it has been suggested that it may be linked to protease-inhibitor treatments (PI).
Materials And Methods:
To assess this risk and to investigate its putative link with treatments, we compared the bone density of HIV+ men, who were either receiving treatment (including PI [PI+], n = 49; without PI [PI-], n = 51) or untreated (UT, n = 48). We included 81 age-matched control HIV-negative (HIV-) males (age, 40 +/- 8 years).
Results:
BMD adjusted for age (Z-score) was lower in the HIV+ patients at the lumbar spine (HIV+: -1.08 +/- 1.21, HIV-: -0.06 +/- 1.26, p < 0.001) and the femoral neck (HIV+: -0.39 +/- 1.05, HIV-: 0.25 +/- 0.87, p < 0.001). The prevalence of osteoporosis was 16% in HIV+ and 4% in HIV- subjects (p < 0.01). In the HIV+ subjects, the Z-score was correlated only to body mass index (r = 0.27 at lumbar spine and 0.35 at femoral neck). Untreated HIV+ patients had a negative Z-score (-0.82 +/- 1.15 for the lumbar spine), which was not different from the one of treated HIV+ patients. In the PI+ and PI- groups, the Z-score did not depend on the presence of lipodystrophy or the proportion of fat in the abdomen and legs measured by DXA. Markers of bone remodeling were measured in the 132 HIV+ and 35 HIV- subjects. Compared with controls, HIV+ patients had lower bone alkaline phosphatase and higher urinary cross-laps/Cr, which was negatively correlated with the Z-score at both the femoral neck (r = -0.22) and lumbar spine (r = -0.21). TNFalpha was increased in untreated compared with treated HIV+ subjects and was not correlated to the Z-score.
Conclusion:
Our cross-sectional study does not show any deleterious effect of the treatment but does indicate a decrease in bone density in HIV+ patients irrespective of the treatment. This low bone density is in part related to the low body weight and is associated with increased bone resorption.
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