Peer-reviewed veterinary case report
Antioxidant levels in sick dogs and cats compared to healthy pets
By Viviano, K R et al.·Published in Journal of veterinary internal medicine·2009·Department of Medical Sciences, United States·View original on PubMed →
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Original publication title: Glutathione, cysteine, and ascorbate concentrations in clinically ill dogs and cats.
Plain-English summary
A study found that clinically ill dogs had lower levels of a key antioxidant called glutathione compared to healthy dogs, which may indicate how severe their illness is and could predict a worse outcome. In contrast, sick cats showed higher levels of another antioxidant, ascorbate, which might be a unique response to their condition. This suggests that monitoring these antioxidants could help veterinarians assess the health of sick pets and tailor treatments accordingly.
People also search for: dog illness symptoms · low glutathione in dogs · cat health antioxidants · sick dog prognosis · high ascorbate in cats
Abstract
BACKGROUND: Oxidative stress plays a role in the pathogenesis of many systemic diseases. Hospitalized human patients are glutathione, cysteine, and ascorbate deficient, and antioxidant depletion has been correlated with poor clinical outcome. To date little is known about antioxidant concentrations in hospitalized veterinary patients. The purpose of this study was to determine whether ascorbate, cysteine, or glutathione depletion is present in ill dogs and cats compared with healthy controls. HYPOTHESIS: Clinically ill dogs and cats would be antioxidant depleted, and depletion would correlate with illness severity and clinical outcome. ANIMALS: Clinically ill client-owned dogs (n = 61) and cats (n = 37), healthy control dogs (n = 37) and cats (n = 33). METHODS: Prospective, observational, case control study. Erythrocyte reduced glutathione, plasma cysteine, and plasma ascorbate were quantified using high-performance liquid chromatography. RESULTS: Clinically ill dogs had significantly lower erythrocyte glutathione concentrations (1.22 mM, range 0.55-3.61) compared with controls (1.91 mM, range 0.87-3.51; P = .0004), and glutathione depletion correlated with both illness severity (P = .038) and mortality (P = .010). Cats had higher ascorbate concentrations when ill (10.65 microM, range 1.13-25.26) compared with controls (3.68 microM, range 0.36-13.57; P = .0009). CONCLUSIONS AND CLINICAL IMPORTANCE: Clinically ill dogs had decreased erythrocyte glutathione concentrations, which could be a marker of illness severity and prognostic of a poor outcome. Clinically ill cats had an unexpectedly high plasma ascorbate, which could represent a unique species response to oxidative stress.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19143933/