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Treatment of chronic kidney disease-mineral and bone disorder (CKD-MBD)
Hirotaka Komaba1, Motoko Tanaka, Masafumi Fukagawa
1Division of Nephrology and Kidney Center, Kobe University School of Medicine, Kobe.
Insights
Chronic kidney disease (CKD) mineral and bone disorder (CKD-MBD) management is evolving. New therapies aim to improve survival and reduce complications in dialysis patients with CKD-MBD.
Area of Science:
- Nephrology
- Endocrinology
- Cardiovascular Medicine
Background:
- Mineral and bone metabolism disturbances are key in cardiovascular complications of chronic kidney disease (CKD).
- CKD-mineral and bone disorder (CKD-MBD) now encompasses vascular calcification and bone abnormalities, replacing "renal osteodystrophy."
- Japanese guidelines prioritize survival over bone health in dialysis patients with secondary hyperparathyroidism.
Purpose of the Study:
- To review the paradigm shift in understanding CKD-MBD.
- To discuss the updated guidelines for managing secondary hyperparathyroidism in chronic dialysis patients.
- To highlight novel therapeutic tools for CKD-MBD management in Japan.
Main Methods:
- Literature review of CKD-MBD pathogenesis and management.
- Analysis of Japanese Society for Dialysis Therapy guidelines.
- Overview of recently introduced therapeutic agents.
Main Results:
- CKD-MBD is a comprehensive term including vascular and bone issues.
- Guidelines suggest parathyroid intervention if pharmacological management fails.
- New agents like sevelamer hydrochloride, calcitriol analogs, and cinacalcet hydrochloride are available.
Conclusions:
- Effective management of CKD-MBD requires harmonizing various therapeutic modalities.
- Improved CKD-MBD management is expected to reduce morbidity and mortality in dialysis patients.
- Integration of new therapies holds promise for better patient outcomes.
Abstract:
Disturbances in mineral and bone metabolism play a critical role in the pathogenesis of cardiovascular complications in patients with chronic kidney disease (CKD). The term "renal osteodystrophy" has recently been replaced with "CKD-mineral and bone disorder (CKD-MBD)", which includes vascular calcification as well as bone abnormalities. Following this paradigm shift, the Japanese Society for Dialysis Therapy released guidelines for the management of secondary hyperparathyroidism in chronic dialysis patients, which prioritized improvement in survival, but not in bone abnormalities. According to these guidelines, parathyroid intervention, such as parathyroidectomy and percutaneous ethanol injection therapy, should be indicated if mineral disorders cannot be managed by pharmacological means. Recently, several novel therapeutic tools, including sevelamer hydrochloride, calcitriol analogs, and cinacalcet hydrochloride have been introduced in the clinical setting in Japan. Harmonizing these therapeutic modalities, we should expect more effective management of CKD-MBD, leading to the improvement of morbidity and mortality in this patient population.
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