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Calorie restriction protects against acute systemic LPS-induced inflammation
Vanessa-Fernanda da Silva1, Vitor Gayger-Dias1, Rafaela Sampaio da Silva1
1Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Ciências Básicas da Saúde (ICBS), Graduate Program in Biochemistry, Porto Alegre, Brazil.
Nutritional Neuroscience
|February 22, 2024
Summary
Caloric restriction (CR) reduces inflammation and protects the brain during acute inflammatory challenges. This nutritional strategy enhances antioxidant capacity, offering neuroprotection and potentially delaying aging.
Area of Science:
- Neuroscience
- Immunology
- Aging Research
Background:
- Caloric restriction (CR) is a nutritional strategy linked to combating chronic diseases and aging.
- Mechanisms and cellular targets of CR's benefits, especially concerning inflammation, require further elucidation.
Purpose of the Study:
- To investigate the protective role of CR against an acute inflammatory stimulus.
- To explore CR's effects on peripheral and central inflammatory and metabolic parameters.
Main Methods:
- Wistar rats underwent 30% CR for 4 or 8 weeks, followed by lipopolysaccharide (LPS) administration.
- Evaluated peripheral inflammatory markers (interleukin-6), CNS inflammatory markers (tumor necrosis factor alpha), and glial changes in the hippocampus and hypothalamus.
- Assessed serum and brain parameters using biochemical and immunological assays.
Main Results:
- CR partially reduced serum interleukin-6, attenuating the systemic inflammatory response.
- In the hippocampus, CR mitigated the LPS-induced increase in tumor necrosis factor alpha.
- CR elevated glutathione levels in the hippocampus, enhancing antioxidant defense.
Conclusions:
- CR demonstrates a protective effect against acute inflammation, particularly in the central nervous system.
- CR's benefits involve modulating inflammatory pathways and bolstering antioxidant capacity in the brain.
- Findings highlight the importance of CR and glial cell function in neuroprotection strategies.
