TY - JOUR
T1 - Increased eosinophils in adipose tissue of metabolic syndrome
AU - Moussa, Karine
AU - Gurung, Purnima
AU - Adams-Huet, Beverley
AU - Devaraj, Sridevi
AU - Jialal, Ishwarlal
N1 - Publisher Copyright:
© 2019
PY - 2019/8
Y1 - 2019/8
N2 - Aims: Metabolic Syndrome (MetS) is a common global disorder that predisposes to both Type 2 diabetes mellitus (T2DM) and cardiovascular disease (ASCVD). Adipose tissue (AT) contributes significantly to increased inflammation and insulin resistance (IR) in MetS which appear to be the crucial underpinnings of MetS. Compared to macrophages and lymphocytes in human subcutaneous AT (SAT), there is sparse data on the role of other immune cells, especially eosinophils (EOS). In this study, we investigated the abundance of EOS in the SAT of 19 patients with MetS without diabetes, ASCVD, smoking or any inflammatory condition, and matched controls. Methods: SAT EOS were quantified by immunohistochemistry. Results: Both circulating and SAT EOS were significantly increased 2-fold in MetS and correlated with each other. Circulating EOS correlated significantly with triglycerides (TG), high-sensitivity CRP, leptin, and IL-6. SAT EOS correlated significantly with plasma glucose, TG, FFA, adipose-IR, leptin, IL-6, endotoxin, chemerin and inversely with adiponectin. They also correlated with SAT markers of fibrosis: collagen and Sirius red staining of SAT. Conclusion: We make the novel and seminal observation that eosinophils are increased in SAT of MetS patients, and are associated with the pro-inflammatory state. Hence, in humans, they appear to contribute to the dysregulation of SAT biology in MetS.
AB - Aims: Metabolic Syndrome (MetS) is a common global disorder that predisposes to both Type 2 diabetes mellitus (T2DM) and cardiovascular disease (ASCVD). Adipose tissue (AT) contributes significantly to increased inflammation and insulin resistance (IR) in MetS which appear to be the crucial underpinnings of MetS. Compared to macrophages and lymphocytes in human subcutaneous AT (SAT), there is sparse data on the role of other immune cells, especially eosinophils (EOS). In this study, we investigated the abundance of EOS in the SAT of 19 patients with MetS without diabetes, ASCVD, smoking or any inflammatory condition, and matched controls. Methods: SAT EOS were quantified by immunohistochemistry. Results: Both circulating and SAT EOS were significantly increased 2-fold in MetS and correlated with each other. Circulating EOS correlated significantly with triglycerides (TG), high-sensitivity CRP, leptin, and IL-6. SAT EOS correlated significantly with plasma glucose, TG, FFA, adipose-IR, leptin, IL-6, endotoxin, chemerin and inversely with adiponectin. They also correlated with SAT markers of fibrosis: collagen and Sirius red staining of SAT. Conclusion: We make the novel and seminal observation that eosinophils are increased in SAT of MetS patients, and are associated with the pro-inflammatory state. Hence, in humans, they appear to contribute to the dysregulation of SAT biology in MetS.
KW - Eosinophils
KW - Fibrosis
KW - Inflammation
KW - Metabolic Syndrome
KW - Subcutaneous adipose tissue
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U2 - 10.1016/j.jdiacomp.2019.05.010
DO - 10.1016/j.jdiacomp.2019.05.010
M3 - Article
C2 - 31204245
AN - SCOPUS:85067180687
SN - 1056-8727
VL - 33
SP - 535
EP - 538
JO - Journal of Diabetes and Its Complications
JF - Journal of Diabetes and Its Complications
IS - 8
ER -