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Increased serum osteoprotegerin level in older and diabetic hemodialysis patients
Shigehiro Doi1, Noriaki Yorioka, Takao Masaki
1Harada Hospital, Department of Blood Purification, Graduate School of Biochemical Sciences, Hiroshima University, Hiroshima City, Japan.
Insights
Serum osteoprotegerin levels are elevated in hemodialysis patients, increasing with age, dialysis duration, and diabetes. This may explain adynamic bone disease prevalence in these patient groups.
Area of Science:
- Nephrology
- Endocrinology
- Bone Metabolism
Background:
- Osteoprotegerin (OPG) is a key inhibitor of osteoclastogenesis.
- Elevated serum OPG levels are observed in patients undergoing hemodialysis.
- The relationship between OPG and clinical parameters in hemodialysis patients requires further investigation.
Purpose of the Study:
- To investigate the correlation between serum osteoprotegerin levels and clinical parameters in hemodialysis patients.
- To explore potential links between OPG, aging, dialysis duration, diabetes, and bone disease.
Main Methods:
- Serum OPG levels were measured using enzyme-linked immunosorbent assay (ELISA).
- Stepwise multiple regression analysis was employed to analyze data.
- Study included 82 hemodialysis patients (45 men, 37 women; age 27-94 years).
Main Results:
- Hemodialysis patients exhibited higher mean OPG levels (303 +/- 210 pg/mL) compared to age-matched controls.
- Serum OPG levels positively correlated with patient age, duration of dialysis, and presence of diabetes.
- These factors may contribute to increased skeletal resistance to parathyroid hormone.
Conclusions:
- Elevated serum osteoprotegerin in hemodialysis patients is associated with age, dialysis duration, and diabetes.
- These associations may contribute to the higher incidence of adynamic bone disease in older and diabetic hemodialysis patients.
- Further research is warranted to elucidate the precise mechanisms linking OPG to bone metabolism disturbances in this population.
Abstract:
Osteoprotegerin is a circulating osteoclastogenesis inhibitory factor and serum osteoprotegerin levels are elevated in hemodialysis patients. This study investigated whether osteoprotegerin levels correlated with various clinical parameters in hemodialysis patients. The subjects were 45 men and 37 women aged from 27 to 94 years (mean = 60.4 +/- 13.9 years), and the duration of dialysis was 9-277 months (mean = 89.5 +/- 64.7 months). Serum osteoprotegerin levels were measured by enzyme-linked immunosorbent assay. Data were analyzed by stepwise multiple regression analysis. The mean osteoprotegerin level of the hemodialysis patients was 303 +/- 210 pg/mL, which was higher than in age-matched healthy controls. Osteoprotegerin levels increased with age, a longer duration of dialysis, and the presence of diabetes. Skeletal resistance to parathyroid hormone might be increased by aging, a long dialysis period, and diabetes, perhaps explaining why adynamic bone disease is more common in older or diabetic patients.
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