Genetic and dietary salt contributors to insulin resistance in Dahl salt-sensitive (S) rats.
Insulin resistance has been extensively investigated during the past decade because of its proposed role in initiating a cluster of cardiovascular risk factors including hypertension. Insulin resistance is an inherited genetic trait that precedes hypertension in Dahl salt-sensitive (S) rats, and is not present in Dahl salt-resistant (R) rats. Owing to the co-existence of insulin resistance and salt sensitivity of blood pressure in Dahl S, but not R rats, Dahl S rats are used to elucidate the role of dietary salt as a potential link in exacerbating both phenotypes (insulin resistance and salt sensitivity). In light of available data, examining the impact of dietary salt on insulin resistance in Dahl S rats in terms of salt concentration and duration of exposure helps answer the following question: What percentage of dietary salt and for what duration of exposure would we expect an enhanced insulin resistance in Dahl S rats? This commentary gathers all available research done on insulin resistance in Dahl S rats in an attempt to unravel dietary salt contribution to insulin resistance in Dahl S rats.
Shehata
Marlene F
MF
D000818:Animals; D006946:Hyperinsulinism / Q000235:genetics* / Q000503:physiopathology*; D007333:Insulin Resistance / Q000235:genetics*; D010641:Phenotype; D051381:Rats; D020303:Rats, Inbred Dahl / Q000235:genetics*; D017673:Sodium Chloride, Dietary / Q000494:pharmacology*
D017673:Sodium Chloride, Dietary