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Should we quantify insulin resistance in patients with renal disease?
Yvonne Shen1, Philip W Peake, John J Kelly
1Department of Nephrology, Prince of Wales Hospital, Randwick, Australia.
Insights
Chronic kidney disease (CKD) significantly increases cardiovascular disease risk, with insulin resistance (IR) being a key contributor. The HOMA index, measuring IR, predicts survival in dialysis patients, highlighting its clinical importance.
Area of Science:
- Nephrology
- Cardiology
- Endocrinology
Background:
- Cardiovascular disease (CVD) is a leading cause of death in dialysis patients.
- Chronic kidney disease (CKD) is an independent risk factor for CVD, with vascular disease developing before dialysis initiation.
- Insulin resistance (IR) is a significant contributor to the elevated vascular risk observed in CKD patients.
Purpose of the Study:
- To explore the role of insulin resistance (IR) in the pathogenesis of cardiovascular disease (CVD) in chronic kidney disease (CKD) patients.
- To discuss the quantification of IR using methods like the homeostatic model assessment (HOMA) index.
- To review potential interventions targeting IR in the context of CKD.
Main Methods:
- Review of existing literature on CKD, CVD, and insulin resistance.
- Discussion of the homeostatic model assessment (HOMA) technique for quantifying IR.
- Examination of the relationship between CKD, metabolic syndrome features, and IR.
Main Results:
- The HOMA index is a validated, independent predictor of survival in dialysis patients.
- CKD is associated with features of metabolic syndrome and IR, contributing to vascular complications.
- Chronic inflammation and adipose tissue dysfunction in CKD may promote IR.
Conclusions:
- Insulin resistance is a critical factor in the high cardiovascular morbidity and mortality associated with chronic kidney disease.
- The HOMA index offers a valuable tool for assessing IR and predicting outcomes in dialysis patients.
- Further research is needed to systematically evaluate interventions aimed at improving IR in CKD patients.
Abstract:
Cardiovascular disease is a major cause of morbidity and mortality in dialysis patients. Vascular disease develops before the initiation of dialysis, and it is now recognized that chronic kidney disease (CKD) is an independent risk factor for cardiovascular disease. Death from cardiovascular disease is a more common endpoint of CKD than progression to dialysis. There are multiple mechanisms that contribute to the increased vascular risk of CKD, one of which is the presence of insulin resistance (IR). CKD is characterised by many features of the metabolic syndrome, and features of IR are also observed in dialysis and transplant patients. IR may be quantified by several different methods. One such method is homeostatic model assessment (HOMA) technique, which derives a measurement of IR from fasting plasma glucose and insulin concentrations. The HOMA index has been demonstrated to be an independent predictor of survival in dialysis patients. CKD is characterised by a chronic inflammatory response and abnormalities in the production and regulation of adipose tissue derived proteins, which may contribute to the development of IR. There are a range of interventions including diet and exercise programmes or medications that may influence IR; however, the impact of these interventions in the context of CKD has not been systematically evaluated.
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