A carnosine analog mitigates metabolic disorders of obesity by reducing carbonyl stress
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View abstract on PubMed
Summary
This summary is machine-generated.A new carnosine derivative, carnosinol, effectively scavenges reactive carbonyl species (RCS) linked to obesity. This oral therapy improved metabolic health in rodents without altering body weight, suggesting a novel treatment for metabolic disorders.
Area Of Science
- Biochemistry
- Pharmacology
- Metabolic Diseases
Background
- Reactive carbonyl species (RCS) are implicated in obesity-related oxidative stress, but their pathogenic role is debated due to broad reactivity and lack of specific therapies.
- Naturally occurring histidine dipeptides like carnosine have RCS reactivity but are limited by serum carnosinases, hindering therapeutic use.
Purpose Of The Study
- To design and evaluate carnosinol, a novel, orally bioavailable carnosine derivative resistant to carnosinases, as a targeted scavenger of RCS.
- To assess carnosinol's efficacy in mitigating metabolic dysfunction and inflammation in rodent models of obesity and metabolic syndrome.
Main Methods
- Rational design and characterization of carnosinol, a carnosine derivative with enhanced stability and bioavailability.
- Pharmacological evaluation of carnosinol's potency and selectivity against α,β-unsaturated aldehydes (e.g., 4-hydroxynonenal [HNE]).
- Assessment of carnosinol's effects on HNE adducts, inflammation, dyslipidemia, insulin resistance, and steatohepatitis in diet-induced obesity rodent models.
Main Results
- Carnosinol demonstrated high potency and selectivity for α,β-unsaturated aldehydes, with a favorable ADMET profile.
- Dose-dependent reduction of HNE adducts in liver and skeletal muscle of obese rodents treated with carnosinol.
- Significant improvements in inflammation, dyslipidemia, insulin resistance, and steatohepatitis, independent of changes in energy expenditure or body weight.
Conclusions
- Reactive carbonyl species play a pathogenic role in obesity-related metabolic disorders.
- Carnosinol represents a promising new class of therapeutic compounds for scavenging carbonyl species.
- Carnosinol's efficacy in preclinical models validates its potential for treating metabolic diseases associated with oxidative stress.
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