1
|
Yajima A, Tsuchiya K, Kuro-O M, Urena P, Tominaga Y, Okada M, Ichimori T, Tomosugi T, Hiramitsu T, Murata T, Nakamura M, Sasaki M, Ito A, Nitta K. Renal hyperparathyroidism. VITAMINS AND HORMONES 2022; 120:305-343. [PMID: 35953115 DOI: 10.1016/bs.vh.2022.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The number of the patients with chronic kidney disease is now increasing in the world. The pathophysiology of renal hyperparathyroidism is closely associated with Klotho-FGF-endocrine axes, which must be solved definitively as early as possible. It was revealed that the expression of fgf23 is activated by calciprotein particles, which induces vascular ossification. And it is well known that phosphorus overload directly increases parathyroid hormone and hyperparathyroid bone disease develops in those subjects. On the other hand, low turnover bone disease is often recently. Both the patients with chronic kidney disease suffering from hyperparathyroid bone disease or low turnover bone disease are associated with increased fracture risk. Micropetrosis may be one of the causes of increased fracture risk in the subjects with low turnover bone disease. In this chapter, we now describe the diagnosis, pathophysiology and treatments of renal hyperparathyroidism.
Collapse
Affiliation(s)
- Aiji Yajima
- Department of Anatomy, Cell Biology and Physiology, Indiana University, School of Medicine, Indianapolis, IN, United States; Department of Urology, Tokyo, Teishin Hospital, Tokyo, Japan; Department Blood Purification, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan.
| | - Ken Tsuchiya
- Department Blood Purification, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Makoto Kuro-O
- Division of Anti-aging Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Pablo Urena
- Division of Nephrology, Clinique du Landy, Saint Ouen, France
| | - Yoshihiro Tominaga
- Department of Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Manabu Okada
- Department of Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Toshihiro Ichimori
- Department of Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Toshihide Tomosugi
- Department of Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Takahisa Hiramitsu
- Department of Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Taro Murata
- Department of Urology, Tokyo, Teishin Hospital, Tokyo, Japan
| | - Masaki Nakamura
- Department of Nephrology and Urology, NTT East Kanto Hospital, Tokyo, Japan
| | - Masahiko Sasaki
- Department of Urology, Tokyo, Teishin Hospital, Tokyo, Japan
| | - Akemi Ito
- Ito Bone Histomorphometry Institute, Niigata, Japan
| | - Kosaku Nitta
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| |
Collapse
|
2
|
Yajima A, Tsuchiya K, Burr DB, Murata T, Nakamura M, Inaba M, Tominaga Y, Tanizawa T, Nakayama T, Ito A, Nitta K. Micropetrosis in hemodialysis patients. Bone Rep 2021; 15:101150. [PMID: 34926729 PMCID: PMC8649646 DOI: 10.1016/j.bonr.2021.101150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/06/2021] [Accepted: 11/15/2021] [Indexed: 01/03/2023] Open
Abstract
Micropetrosis develops as a result of stagnation of calcium, phosphorus and bone fluid, which appears as highly mineralized bone area in the osteocytic perilacunar/canalicular system regardless of bone turnover of the patients. And microcracks are predisposed to increase in these areas, which leads to increased bone fragility. However, micropetrosis of hemodialysis (HD) patients has not been discussed at all. Micropetrosis area per bone area (Mp.Ar/B·Ar) and osteocyte number per micropetrosis area (Ot.N/Mp.Ar) were measured in nine HD patients with renal hyperparathyroidism (Group I), twelve patients with hypoparathyroidism within 1 year after the treatment of renal hyperparathyroidism (Group II) and seven patients suffering from hypoparathyroidism for over two years (Group III). And bone mineral density (BMD) and tissue mineral density (TMD) were calculated using μCT to evaluate bone mineral content of iliac bone of the patients. These parameters were compared among the three groups. Only Mp.Ar/B·Ar was statistically greater in Group II and III compared to Group I in the parameters of bone mineral content and micropetrosis. However, the other parameters were not statistically different among the three groups. In long-term HD patients, BMD and TMD may be modified by the causes of renal insufficiency and the treatment of renal bone disease. We concluded that Mp.Ar/B·Ar was greater in patients with long-term hypoparathyroidism than both those with short-term hypoparathyroidism and with renal hyperparathyroidism. Special attention should be paid to avoid long-term hypoparathyroidism of the patients from the view point of increased fracture risk caused by increased micropetrosis area.
Collapse
Affiliation(s)
- Aiji Yajima
- Department of Anatomy, Cell Biology and Physiology, Indiana University, School of Medicine, Indianapolis, IN, USA.,Department of Urology, Tokyo Teishin Hospital, Tokyo, Japan.,Department of Blood Purification, 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, Cell Biology and Physiology, Indiana University, School of Medicine, Indianapolis, IN, USA
| | - Taro Murata
- Department of Urology, Tokyo Teishin Hospital, Tokyo, Japan
| | - Masaki Nakamura
- Department of Nephrology and Urology, NTT East Kanto Hospital, Tokyo, Japan
| | - Masaaki Inaba
- Department of Metabolism, Endocrinology and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yoshihiro Tominaga
- Department of Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | | | | | - Akemi Ito
- Ito Bone Histomorphometry Institute, Niigata, Japan
| | - Kosaku Nitta
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| |
Collapse
|