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Erschienen in: Diabetology International 4/2016

01.11.2016 | Review Article

M2 macrophages in metabolism

verfasst von: Shiho Fujisaka, Isao Usui, Allah Nawaz, Akiko Takikawa, Tomonobu Kado, Yoshiko Igarashi, Kazuyuki Tobe

Erschienen in: Diabetology International | Ausgabe 4/2016

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Abstract

Adipose tissue not only functions as the major energy-storing tissue, but also functions as an endocrine organ that regulates systemic metabolism by releasing various hormones called adipokines. Macrophages play a critical role in maintaining adipocyte health in a lean state and in remodeling during the progression of obesity. Large numbers of classically activated (M1) macrophages accumulate in adipose tissue as adipocytes become larger because of excessive energy conditions, and they adversely affect insulin resistance by triggering local and systemic inflammation. In contrast, alternatively activated (M2) macrophages seem to maintain the health of adipose tissues in a lean state. In addition, they play a role in adapting to excess energy states, because M2 macrophage dysfunction caused by genetic disruption of the M2 gene results in metabolic disorders under high-fat-fed conditions that are probably attributable to their anti-inflammatory functions. Nonetheless, how M2 macrophages contribute to maintaining the health of adipose tissue and therefore to insulin sensitivity is largely unknown. In this article, we review the literature on the role of M1 and M2 macrophages in metabolism, with a special focus on the role of M2 macrophages in adipose tissue. Likewise, we raise topics of M2 macrophages in non-adipose tissues to expand our understanding of macrophage heterogeneity.
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Metadaten
Titel
M2 macrophages in metabolism
verfasst von
Shiho Fujisaka
Isao Usui
Allah Nawaz
Akiko Takikawa
Tomonobu Kado
Yoshiko Igarashi
Kazuyuki Tobe
Publikationsdatum
01.11.2016
Verlag
Springer Japan
Erschienen in
Diabetology International / Ausgabe 4/2016
Print ISSN: 2190-1678
Elektronische ISSN: 2190-1686
DOI
https://doi.org/10.1007/s13340-016-0290-y

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