期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 79, 期 1, 页码 -出版社
SPRINGER BASEL AG
DOI: 10.1007/s00018-021-04019-x
关键词
Aging; Diabetes; Hypertension; Hypothalamus; Inflammation; Obesity
资金
- National Research Foundation of Korea (NRF) - Korean government [NRF2017R1A5A2015391, 2020M3E5D9079764]
- National Research Foundation of Korea [2020M3E5D9079764] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The hypothalamus is a critical brain region for energy homeostasis regulation, with recent studies highlighting the role of glial cells in addition to neurons. However, inflammatory activation of these cells under metabolic stress conditions contributes to various metabolic diseases, worsening the disease state.
The hypothalamus is a critical brain region for the regulation of energy homeostasis. Over the years, studies on energy metabolism primarily focused on the neuronal component of the hypothalamus. Studies have recently uncovered the vital role of glial cells as an additional player in energy balance regulation. However, their inflammatory activation under metabolic stress condition contributes to various metabolic diseases. The recruitment of monocytes and macrophages in the hypothalamus helps sustain such inflammation and worsens the disease state. Neurons were found to actively participate in hypothalamic inflammatory response by transmitting signals to the surrounding non-neuronal cells. This activation of different cell types in the hypothalamus leads to chronic, low-grade inflammation, impairing energy balance and contributing to defective feeding habits, thermogenesis, and insulin and leptin signaling, eventually leading to metabolic disorders (i.e., diabetes, obesity, and hypertension). The hypothalamus is also responsible for the causation of systemic aging under metabolic stress. A better understanding of the multiple factors contributing to hypothalamic inflammation, the role of the different hypothalamic cells, and their crosstalks may help identify new therapeutic targets. In this review, we focus on the role of glial cells in establishing a cause-effect relationship between hypothalamic inflammation and the development of metabolic diseases. We also cover the role of other cell types and discuss the possibilities and challenges of targeting hypothalamic inflammation as a valid therapeutic approach.
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