PMID- 32590137 OWN - NLM STAT- MEDLINE DCOM- 20210617 LR - 20220126 IS - 1873-2763 (Electronic) IS - 8756-3282 (Print) IS - 1873-2763 (Linking) VI - 138 DP - 2020 Sep TI - Bone turnover markers in children living with HIV remaining on ritonavir-boosted lopinavir or switching to efavirenz. PG - 115500 LID - S8756-3282(20)30280-5 [pii] LID - 10.1016/j.bone.2020.115500 [doi] AB - INTRODUCTION: We previously found lower bone mass but similar bone turnover in pre-pubertal children living with HIV (CLWH) on a ritonavir-boosted lopinavir (LPV/r)-based vs. efavirenz-based antiretroviral therapy regimen 2 years after switch. Here, we evaluate if bone turnover differed between the groups close to the time of switch. METHODS: Samples from 108 children remaining on LPV/r and 104 children switched to efavirenz were available for analysis 8 weeks post-randomization. Bone turnover markers, including C-telopeptide of type 1 collagen (CTx), procollagen type-I N-terminal propeptide (P1NP), and osteocalcin were measured. Markers of immune activation were also measured, including IL-6, TNF-alpha, soluble CD14 and high-sensitivity C-reactive protein (CRP). RESULTS: Eight weeks post-randomization, we did not detect differences in CTx (1.42 vs. 1.44 ng/mL, p = 0.85) or P1NP concentrations (622 vs. 513 ng/mL, p = 0.68) between treatment groups. At 8 weeks, the treatment groups also had similar levels of IL-6, TNF-alpha, soluble CD14 and high-sensitivity CRP. Osteocalcin (ng/mL) was higher in the LPV/r than efavirenz group both at 8 weeks (88.6 vs. 67.3, p = 0.001) and 2 years (67.6 vs. 49.8, p = 0.001). CONCLUSIONS: Overall, we failed to detect difference in bone turnover by P1NP and CTx in virologically-suppressed CLWH on different regimens at a time point close to the switch. We did observe higher levels of total osteocalcin in children remaining on LPV/r compared to children switched to efavirenz. Future studies should focus on uncovering the mechanism and determining whether perturbation in undercarboxylated osteocalcin could explain some of the bone side effects noted with protease inhibitors. CI - Copyright (c) 2020. Published by Elsevier Inc. FAU - Shiau, Stephanie AU - Shiau S AD - Department of Biostatistics and Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA. FAU - Yin, Michael T AU - Yin MT AD - Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY, USA. FAU - Strehlau, Renate AU - Strehlau R AD - Empilweni Services and Research Unit, Rahima Moosa Mother and Child Hospital, Department of Pediatrics and Child Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. FAU - Shen, Jing AU - Shen J AD - Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY, USA. FAU - Abrams, Elaine J AU - Abrams EJ AD - Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA; Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA; ICAP at Columbia, Mailman School of Public Health, Columbia University, New York, NY, USA. FAU - Coovadia, Ashraf AU - Coovadia A AD - Empilweni Services and Research Unit, Rahima Moosa Mother and Child Hospital, Department of Pediatrics and Child Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa. FAU - Kuhn, Louise AU - Kuhn L AD - Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA. FAU - Arpadi, Stephen M AU - Arpadi SM AD - Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA; Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA; ICAP at Columbia, Mailman School of Public Health, Columbia University, New York, NY, USA. Electronic address: sma2@columbia.edu. LA - eng GR - R01 HD061255/HD/NICHD NIH HHS/United States GR - R01 HD073952/HD/NICHD NIH HHS/United States GR - R01 HD073977/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20200623 PL - United States TA - Bone JT - Bone JID - 8504048 RN - 0 (Alkynes) RN - 0 (Benzoxazines) RN - 0 (Cyclopropanes) RN - 2494G1JF75 (Lopinavir) RN - JE6H2O27P8 (efavirenz) RN - O3J8G9O825 (Ritonavir) SB - IM MH - Alkynes MH - Benzoxazines MH - Bone Remodeling MH - Child MH - Cyclopropanes MH - *HIV Infections/drug therapy MH - Humans MH - Lopinavir/therapeutic use MH - *Ritonavir/therapeutic use PMC - PMC8786259 MID - NIHMS1624041 OTO - NOTNLM OT - Bone OT - Bone turnover markers OT - Osteocalcin OT - Protease inhibitors COIS- Declaration of competing interest Stephanie Shiau, Michael T. Yin, Renate Strehlau, Jing Shen, Elaine J. Abrams, Ashraf Coovadia, Louise Kuhn, and Stephen M. Arpadi declare that they have no conflict of interest. EDAT- 2020/06/27 06:00 MHDA- 2021/06/22 06:00 PMCR- 2022/01/24 CRDT- 2020/06/27 06:00 PHST- 2020/02/14 00:00 [received] PHST- 2020/05/15 00:00 [revised] PHST- 2020/06/14 00:00 [accepted] PHST- 2020/06/27 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/06/27 06:00 [entrez] PHST- 2022/01/24 00:00 [pmc-release] AID - S8756-3282(20)30280-5 [pii] AID - 10.1016/j.bone.2020.115500 [doi] PST - ppublish SO - Bone. 2020 Sep;138:115500. doi: 10.1016/j.bone.2020.115500. Epub 2020 Jun 23.