Osteoporosis
Conditions
Keywords
Human immunodeficiency virus, low bone mineral density, osteopenia, osteoporosis, fracture
Brief summary
Despite the prevalence of osteopenia and osteoporosis in the HIV positive population, relatively little is known about the underlying pathology. This prospective cohort study aims to gain further understanding about a number of issues relating to low bone mineral density in HIV-infected subjects.
Detailed description
This study will follow HIV positive and negative subjects annually for 5 years. The aims of this study include: * to describe the pathology underlying low bone mineral density * to assess the relationship between low bone mineral density and antiretroviral therapy exposure * to assess the relationship between low bone mineral density and vitamin D /PTH status and/or markers of bone metabolism * to assess the relationship between osteopenia and subsequent changes in bone mineral density and markers of bone metabolism * to assess the validity of the currently available fracture risk assessment tool in predicting fractures in HIV positive populations
Interventions
None listed
Sponsors
Study design
Eligibility
Inclusion criteria
* age \>18 years * be able to provide written, informed consent * be able to attend the research centre in a fasting state and undergo DEXA scanning
Exclusion criteria
* Subjects on bisphosphonate therapy at screening * Pregnant or breastfeeding female subjects * Subjects with a previous clinical history of primary hyperthyroidism or HIV negative subjects with elevated parathyroid hormone at screening * HIV-negative subjects with a prior history of osteoporosis
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Bone pathology | 3 years | To describe abnormalities in bone pathology in bone biopsies from HIV-infected subjects with low bone mineral density by comparing biopsy indices to reference ranges. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Rates of change in bone mineral density | 3 years | To determine rates of change in bone mineral density in HIV-positive patients compared to HIV-negative controls |
Other
| Measure | Time frame | Description |
|---|---|---|
| Fracture incidence | 3 years | To assess the validity of currently available fracture risk assessment tools in predicting fracture risk in HIV-infected patients. |
Countries
Ireland