Cited by 18Fatty Acid Research and HealthRegulation of Appetite and ObesityLipid metabolism and biosynthesis

Deleterious effects of lard-enriched diet on tissues fatty acids composition and hypothalamic insulin actions

Dornellas, A.P.S., Watanabe, R.L.H., Pimentel, G.D., Boldarine, V.T., Nascimento, C.M.O., Oyama, L.M., Ghebremeskel, K., Wang, Y. +2 more·2015·Prostaglandins, Leukotrienes and Essential Fatty Acids

Abstract

Altered tissue fatty acid (FA) composition may affect mechanisms involved in the control of energy homeostasis, including central insulin actions. In rats fed either standard chow or a lard-enriched chow (high in saturated/low in polyunsaturated FA, HS-LP) for eight weeks, we examined the FA composition of blood, hypothalamus, liver, and retroperitoneal, epididymal and mesenteric adipose tissues. Insulin-induced hypophagia and hypothalamic signaling were evaluated after intracerebroventricular insulin injection. HS-LP feeding increased saturated FA content in adipose tissues and serum while it decreased polyunsaturated FA content of adipose tissues, serum, and liver. Hypothalamic C20:5n-3 and C20:3n-6 contents increased while monounsaturated FA content decreased. HS-LP rats showed hyperglycemia, impaired insulin-induced hypophagia and hypothalamic insulin signaling. The results showed that, upon HS-LP feeding, peripheral tissues underwent potentially deleterious alterations in their FA composition, whist the hypothalamus was relatively preserved. However, hypothalamic insulin signaling and hypophagia were drastically impaired. These findings suggest that impairment of hypothalamic insulin actions by HS-LP feeding was not related to tissue FA composition.

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Crossref · 10.1016/j.plefa.2015.10.003

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  • Substitution of unsaturated fat for saturated fat in these protocols, or ablation of toll-like receptor signaling, reduces metabolic dysfunction and adiposity in rodents.

    “Substitution of unsaturated fat for saturated fat in these protocols, or ablation of toll-like receptor signaling, reduces metabolic dysfunction and adiposity (137–143).”
  • In rodents, high saturated fat content causes hyperinsulinemia, liver and muscle insulin resistance, and hypothalamic inflammation.

    “which in rodents causes hyperinsulinemia, liver and muscle insulin resistance, and hypothalamic inflammation (137–143).”

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Authors
Dornellas, A. P. S., Watanabe, R. L. H., Pimentel, G. D., Boldarine, V. T., Nascimento, C. M. O., Oyama, L. M., Ghebremeskel, K., Wang, Y., Bueno, A. A., & Ribeiro, E. B.
Affiliations
  • Universidade Federal de São Paulo (BR)
  • London Metropolitan University (GB)
  • Imperial College London (GB)
  • University of Worcester (GB)
Corresponding author
Ribeiro, E.B.
Venue
Prostaglandins, Leukotrienes and Essential Fatty Acids
Publisher
Elsevier BV
Published
2015-12
Volume
102-103
Pages
21-29
ISSN
0952-3278 (ISSN-L)
OpenAlex
W2117623744
Cited by
18
References
75
Citations by year
2022: 4 · 2021: 4 · 2020: 2 · 2019: 4 · 2018: 3 · 2016: 1
FWCI
1.29
Type
journal article
Language
en
Open access
closed
Locations
  • Prostaglandins Leukotrienes and Essential Fatty Acids (publishedVersion)
  • PubMed (publishedVersion)
  • London Met Repository (London Metropolitan University) (acceptedVersion)
  • Worcester Research and Publications (University of Worcester) (submittedVersion)
Funders
  • FAPESP
  • CNPq
  • National Council for Scientific and Technological Development
  • Coordination for the Improvement of Higher Education Personnel
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
saturated fatty acids, polyunsaturated fatty acids, tissue fatty acid composition, energy homeostasis, adipose tissue, hyperglycemia, omega-3 fatty acids, omega-6 fatty acids, dietary fat
MeSH terms
Animals, Appetite Regulation, Dietary Fats, Fatty Acids, Hyperglycemia, Hypothalamus, Insulin Resistance, Liver, Male, Obesity, Organ Specificity, Organ Size, Random Allocation, Signal Transduction, Rats, Wistar, Intra-Abdominal Fat, Adiposity, Diet, High-Fat

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