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Kalyan S, Pick N, Mai A, Murray MCM, Kidson K, Chu J, Albert AYK, Côté HCF, Maan EJ, Goshtasebi A, Money DM, Prior JC. Premature Spinal Bone Loss in Women Living with HIV is Associated with Shorter Leukocyte Telomere Length. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15051018. [PMID: 29783641 PMCID: PMC5982057 DOI: 10.3390/ijerph15051018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 12/14/2022]
Abstract
With advances in combination antiretroviral therapy (cART), people living with HIV are now surviving to experience aging. Evidence suggests that individuals living with HIV are at greater risk for low bone mineral density (BMD), osteoporosis, and fractures. Better understanding of the pathophysiology of bone health in women living with HIV (WLWH) is important for treatment strategies. The goal of this study was to explore new biological factors linked to low BMD in WLWH. Standardized BMD measures of WLWH were compared to reference values from an unselected population of women from the same geographical region of the same age range. Linear regression analysis was used to assess relationships among health-related characteristics, cellular aging (measured by leukocyte telomere length; LTL), cART, and BMD of WLWH. WLWH (n = 73; mean age 43 ± 9 years) had lower BMD Z-scores at the lumbar spine (LS) (mean difference = -0.39, p < 0.001) and total hip (TH) (-0.29, p = 0.012) relative to controls (n = 290). WLWH between 50 and 60 years (n = 17) had lower Z-scores at the LS (p = 0.008) and TH (p = 0.027) compared to controls (n = 167). Among WLWH, LS BMD was significantly associated with LTL (R² = 0.09, p = 0.009) and BMI (R² = 0.06, p = 0.042). Spinal BMD was adversely affected in WLWH. Reduction of LTL was strongly associated with lower BMD and may relate to its pathophysiology and premature aging in WLWH.
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Affiliation(s)
- Shirin Kalyan
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
- Division of Endocrinology; Centre for Menstrual Cycle and Ovulation Research, BC Centre for the Canadian Multicentre Osteoporosis Study, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Neora Pick
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
- Department of Medicine, Division of Infectious Disease, University of British Columbia, Vancouver, BC V6Z 1Y6, Canada.
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
| | - Alice Mai
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
| | - Melanie C M Murray
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
- Department of Medicine, Division of Infectious Disease, University of British Columbia, Vancouver, BC V6Z 1Y6, Canada.
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
| | - Kristen Kidson
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
| | - Jackson Chu
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
| | - Arianne Y K Albert
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
| | - Hélène C F Côté
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
- Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 2B5, Canada.
| | - Evelyn J Maan
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
| | - Azita Goshtasebi
- Division of Endocrinology; Centre for Menstrual Cycle and Ovulation Research, BC Centre for the Canadian Multicentre Osteoporosis Study, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Deborah M Money
- Oak Tree Clinic, British Columbia Women's Hospital, Vancouver, BC, V6H 3N1, Canada.
- BC Women's Health Research Institute, British Columbia Women's Hospital, Vancouver, BC V6H 3N1, Canada.
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC V6Z 2K8, Canada.
| | - Jerilynn C Prior
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9 Canada.
- Division of Endocrinology; Centre for Menstrual Cycle and Ovulation Research, BC Centre for the Canadian Multicentre Osteoporosis Study, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
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Hassa PO, Haenni SS, Elser M, Hottiger MO. Nuclear ADP-ribosylation reactions in mammalian cells: where are we today and where are we going? Microbiol Mol Biol Rev 2006; 70:789-829. [PMID: 16959969 PMCID: PMC1594587 DOI: 10.1128/mmbr.00040-05] [Citation(s) in RCA: 508] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Since poly-ADP ribose was discovered over 40 years ago, there has been significant progress in research into the biology of mono- and poly-ADP-ribosylation reactions. During the last decade, it became clear that ADP-ribosylation reactions play important roles in a wide range of physiological and pathophysiological processes, including inter- and intracellular signaling, transcriptional regulation, DNA repair pathways and maintenance of genomic stability, telomere dynamics, cell differentiation and proliferation, and necrosis and apoptosis. ADP-ribosylation reactions are phylogenetically ancient and can be classified into four major groups: mono-ADP-ribosylation, poly-ADP-ribosylation, ADP-ribose cyclization, and formation of O-acetyl-ADP-ribose. In the human genome, more than 30 different genes coding for enzymes associated with distinct ADP-ribosylation activities have been identified. This review highlights the recent advances in the rapidly growing field of nuclear mono-ADP-ribosylation and poly-ADP-ribosylation reactions and the distinct ADP-ribosylating enzyme families involved in these processes, including the proposed family of novel poly-ADP-ribose polymerase-like mono-ADP-ribose transferases and the potential mono-ADP-ribosylation activities of the sirtuin family of NAD(+)-dependent histone deacetylases. A special focus is placed on the known roles of distinct mono- and poly-ADP-ribosylation reactions in physiological processes, such as mitosis, cellular differentiation and proliferation, telomere dynamics, and aging, as well as "programmed necrosis" (i.e., high-mobility-group protein B1 release) and apoptosis (i.e., apoptosis-inducing factor shuttling). The proposed molecular mechanisms involved in these processes, such as signaling, chromatin modification (i.e., "histone code"), and remodeling of chromatin structure (i.e., DNA damage response, transcriptional regulation, and insulator function), are described. A potential cross talk between nuclear ADP-ribosylation processes and other NAD(+)-dependent pathways is discussed.
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Affiliation(s)
- Paul O Hassa
- Institute of Veterinary Biochemistry and Molecular Biology, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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