ArticleLife sciences2020
Oleic acid stimulates monoamine efflux through PPAR-α: Differential effects in diet-induced obesity.
Article in Life sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 11 citations in OpenAlex.
- Syagrus coronata fixed oil attenuates inflammation, oxidative stress and pulmonary alterations in L-arginine-induced pancreatitis.Inflammopharmacology · 2026Article
- Fatty acids in the tumor microenvironment reprogram neutrophils to induce immunosuppression via adenosine.bioRxiv : the preprint server for biology · 2026Article
- Brood-Derived Fat Extracts fromBiology · 2026Article
- Rice Bran and Its Potential To Complement the Nutritional Needs of Children and Elderly.Plant foods for human nutrition (Dordrecht, Netherlands) · 2023Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
Obesity continues to be a growing health concern around the world, and elevated levels of free fatty acids as a result of high-fat intake might play a role in neuroendocrine alterations leading to obesity. However, it is unclear how fatty acids affect neuroendocrine functions and energy metabolism. Since hypothalamic monoamines play a crucial role in regulating neuroendocrine functions relating to energy balance, we investigated the direct effects of oleic acid on hypothalamic monoamines and hypothesized that oleic acid would activate peroxisome proliferator-activated receptor alpha (PPAR-α), a nuclear transcription factor involved with fatty acid metabolism, to affect monoamines. We also hypothesized that this response would be subdued in diet-induced obesity (DIO). To test these hypotheses, hypothalami from Sprague Dawley and DIO rats were incubated with 0 (Control), 0.00132 mM, 0.132 mM, 1.32 mM oleic acid, 50 μM MK 886 (a selective PPAR- α antagonist), or oleic acid + MK 886 in Krebs Ringers Henseleit (KRH) solution. HPLC-EC was used to measure monoamine levels in perfusates. Oleic acid produced a significant increase in norepinephrine, dopamine, and serotonin levels in a dose-dependent manner, and incubation with MK886 blocked these effects. The effect of oleic acid on hypothalamic monoamines was attenuated in DIO rats. These findings suggest that PPARα probably plays an essential role in fatty acid sensing in the hypothalamus, by affecting monoamine efflux and DIO rats are resistant to the effects of oleic acid.
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