Cited by 44Pancreatic function and diabetesAdipokines, Inflammation, and Metabolic DiseasesDiabetes and associated disorders

Pancreatic inflammation and increased islet macrophages in insulin-resistant juvenile primates

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Nicol, L E, Grant, W F, Comstock, S M, Nguyen, M L, Smith, M S, Grove, K L, Marks, D L·2013·Journal of Endocrinology

Abstract

Chronic high caloric intake has contributed to the increased prevalence of pediatric obesity and related morbidities. Most overweight or obese children, however, do not present with frank metabolic disease but rather insulin resistance or subclinical precursors. The innate immune system plays a role in the pathophysiology of type 2 diabetes but how it contributes to early metabolic dysfunction in children on chronic high-fat diet (HFD) is unclear. We hypothesize that such inflammation is present in the pancreas of children and is associated with early insulin resistance. We used nonhuman primate (NHP) juveniles exposed to chronic HFD as a model of early pediatric metabolic disease to demonstrate increased pancreatic inflammatory markers before the onset of significant obesity or glucose dysregulation. Pancreata from 13-month-old Japanese macaques exposed to a HFD from in utero to necropsy were analyzed for expression of cytokines and islet-associated macrophages. Parameters from an intravenous glucose tolerance test were correlated with cytokine expression. Before significant glucose dysregulation, the HFD cohort had a twofold increase in interleukin 6 (IL6), associated with decreased first-phase insulin response and a sexually dimorphic (male) increase in IL1β correlating with increased fasting glucose levels. The number of islet-associated macrophages was also increased. Pancreata from juvenile NHP exposed to HFD have increased inflammatory markers and evidence of innate immune infiltration before the onset of significant obesity or glucose dysregulation. Given the parallel development of metabolic disease between humans and NHPs, these findings have strong relevance to the early metabolic disease driven by a chronic HFD in children.

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  1. Comstock SMBJ Takahashi DL Cornea AN Smith MS Grove KL High-Fat Diet during Early Development Elicits β-Cell Expansion and an Increase in the β-Cell/α-Cell Ratio in the Juvenile Nonhuman Primate Enocrine Review 2011 32 (03_Meeting Abstracts):OR01-3

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Authors
Nicol, L. E., Grant, W. F., Comstock, S. M., Nguyen, M. L., Smith, M. S., Grove, K. L., & Marks, D. L.
Affiliations
  • Oregon National Primate Research Center (US)
  • Oregon Health & Science University (US)
Venue
Journal of Endocrinology
Published
2013-02-18
Volume
217
Issue
2
Pages
207-213
ISSN
  • 0022-0795 (ISSN-L)
  • 1479-6805
OpenAlex
W2142885090
Cited by
44
References
30
Citations by year
2025: 1 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 5 · 2016: 7 · 2015: 4 · 2014: 5 · 2013: 3
FWCI
6.24
Type
journal article
Language
en
Open access
Locations
  • Journal of Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Burroughs Wellcome Fund (1007518)
  • Oregon Health and Science University
  • National Institutes of Health (P51OD011092)
  • Oregon National Primate Research Center
  • National Institute of Diabetes and Digestive and Kidney Diseases (R24DK090964, R01DK079194, P30DK020593)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD014643, K12HD057588)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
Keywords
pancreatitis, insulin resistance, childhood obesity, type 2 diabetes, innate immunity, interleukin-6, IL-1β, Japanese macaque, juvenile primates, first-phase insulin response, sex differences, glucose tolerance
MeSH terms
Animals, Blood Glucose, Disease Models, Animal, Female, Insulin Resistance, Islets of Langerhans, Macaca, Macrophages, Male, Pancreatitis, Sex Factors, Interleukin-6, Interleukin-1beta, Diet, High-Fat

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