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Yajima A, Tsuchiya K, Burr DB, Minner DE, Condon KW, Miller CA, Satoh S, Inaba M, Nakayama T, Tanizawa T, Ito A, Nitta K. Osteocytic perilacunar/canalicular turnover in hemodialysis patients with high and low serum PTH levels. Bone 2018; 113:68-76. [PMID: 29738853 DOI: 10.1016/j.bone.2018.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 04/16/2018] [Accepted: 05/02/2018] [Indexed: 01/30/2023]
Abstract
Osteocytic perilacunar/canalicular turnover in hemodialysis patients has not yet been reported. Osteocyte lacunae in lamellar bone and woven bone were classified as eroded surface-, osteoid surface-, and quiescent surface-predominant osteocyte lacunae (ES-Lc, OS-Lc, QS-Lc, respectively) in 55 hemodialysis patients with either high- (n = 45) or low- (n = 10) parathyroid hormone levels, and 19 control subjects without chronic kidney disease. We calculated the area and number of ES-Lc, OS-Lc, and QS-Lc. The mineralized surface on the osteocyte lacunar walls was measured in each group, and compared among the three groups. The shapes of the osteocyte lacunar walls were validated by backscattered electron microscopy. While the number of ES-Lc per bone area (N.ES-Lc/B.Ar) was higher than the number of OS-Lc per bone area (N.OS-Lc/B.Ar) in all groups, N.ES-Lc/B.Ar and N.OS-Lc/B.Ar were greater in high-parathyroid hormone group than in low-parathyroid hormone and control groups. The total volume of ES-Lc per bone area (ES-Lc.Ar/B.Ar) was greater than the total volume of OS-Lc per bone area (OS-Lc.Ar/B.Ar) in both parathyroid hormone groups. However, both lacunar erosion and lacunar formation increased proportionally, suggesting that global coupling between them was maintained. N.ES-Lc/B.Ar was higher in woven bone than in lamellar bone. The rate of OS-Lc stained by tetracycline hydrochloride, the mineralized lacunar surface and the mean area of OS-Lc with Tc obtained from both parathyroid hormone groups were greater than those in the control group. We conclude that osteocytic perilacunar/canalicular turnover is increased in hemodialysis patients with high parathyroid hormone levels. Osteocytic perilacunar/canalicular turnover depends, at least in part, on serum parathyroid hormone level. However, the ideal PTH level for osteocytic perilacunar/canalicular turnover could not be determined but osteocytic osteolysis was predominant in both the high- and low-PTH groups in this study. Thus, attention should be paid to bone loss from the viewpoint of osteocytic perilacunar/canalicular turnover in hemodialysis patients.
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Affiliation(s)
- Aiji Yajima
- Department of Anatomy and Cell Biology, Indiana University, School of Medicine, Indianapolis, IN, USA; Department of Medicine, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan.
| | - Ken Tsuchiya
- Department of Blood Purification, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - David B Burr
- Department of Anatomy and Cell Biology, Indiana University, School of Medicine, Indianapolis, IN, USA
| | - Daniel E Minner
- Department of Integrated Nanosystems Development Institute, Indiana University, Purdue University, Indianapolis, IN, USA
| | - Keith W Condon
- Department of Anatomy and Cell Biology, Indiana University, School of Medicine, Indianapolis, IN, USA
| | - Caroline A Miller
- Department of Anatomy and Cell Biology, Indiana University, School of Medicine, Indianapolis, IN, USA
| | - Shigeru Satoh
- Center for Kidney Disease and Transplantation, Akita University Hospital, Akita, Japan
| | - Masaaki Inaba
- Department of Metabolism, Endocrinology and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | | | | | - Akemi Ito
- Ito Bone Histomorphometry Institute, Niigata, Japan
| | - Kosaku Nitta
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
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