ArticleNutrients2023
Nitrate and Nitrite Metabolism in Aging Rats: A Comparative Study.
Article in Nutrients, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 9 citations in OpenAlex.
- Evaluation of colostrum-coated ZnO nanoparticles (C-ZnONPs) in attenuating valproic acid-induced prenatal toxicity.Naunyn-Schmiedeberg's archives of pharmacology · 2026Article
- The compartmentalization model of nitrate homeostasis: Role of the salivary glands, skeletal muscle, and liver.EXCLI journal · 2026Review
- Effect of pre-exercise dietary nitrate on skeletal muscle blood flow in a rat model of pulmonary hypertension.American journal of physiology. Regulatory, integrative and comparative physiology · 2025Article
- Declining nitric oxide bioavailability in cardiovascular aging: mechanistic insights and emerging interventions.The journal of cardiovascular aging · 2025Article
- The Health Effects of Dietary Nitrate on Sarcopenia Development: Prospective Evidence from the UK Biobank.Foods (Basel, Switzerland) · 2024Article
- The Skeletal Muscle, the Heart, and the Liver Are the Major Organs of the Accumulation of Nitric Oxide Metabolites after Oral Nitrite Treatment.Antioxidants (Basel, Switzerland) · 2024Article
- High nitrate levels in skeletal muscle contribute to nitric oxide generation via a nitrate/nitrite reductive pathway in mice that lack the nNOS enzyme.Frontiers in physiology · 2024Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Nitric oxide (NO) (co)regulates many physiological processes in the body. Its short-lived free radicals force synthesis in situ and on-demand, without storage possibility. Local oxygen availability determines the origin of NO-either by synthesis by nitric oxide synthases (NOS) or by the reduction of nitrate to nitrite to NO by nitrate/nitrite reductases. The existence of nitrate reservoirs, mainly in skeletal muscle, assures the local and systemic availability of NO. Aging is accompanied by changes in metabolic pathways, leading to a decrease in NO availability. We explored age-related changes in various rat organs and tissues. We found differences in nitrate and nitrite contents in tissues of old and young rats at baseline levels, with nitrate levels being generally higher and nitrite levels being generally lower in old rats. However, there were no differences in the levels of nitrate-transporting proteins and nitrate reductase between old and young rats, with the exception of in the eye. Increased dietary nitrate led to significantly higher nitrate enrichment in the majority of old rat organs compared to young rats, suggesting that the nitrate reduction pathway is not affected by aging. We hypothesize that age-related NO accessibility changes originate either from the NOS pathway or from changes in NO downstream signaling (sGC/PDE5). Both possibilities need further investigation.
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Registered trials
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