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The marrow adipose tissue depot is poorly understood in terms of its physiologic function and relevance to bone health. Marrow adipose tissue expands in states of low bone density but additionally expands in the setting of obesity. [4] Marrow adipose tissue response to exercise approximates that of white adipose tissue.
Adipose tissue (also known as body fat or simply fat) is a loose connective tissue composed mostly of adipocytes. [ 1 ] [ 2 ] It also contains the stromal vascular fraction ( SVF ) of cells including preadipocytes , fibroblasts , vascular endothelial cells and a variety of immune cells such as adipose tissue macrophages .
Increased recruitment of macrophages into adipose tissue is multifactoral. [14] Adipocyte cell death observed within pathologically expanding adipose tissue is one of the factors. Macrophages are specialized phagocytes that remove dying or dead cells or cellular debris. Within adipose tissue, presence of dead adipocytes is a hallmark of obesity.
White adipose tissue or white fat is one of the two types of adipose tissue found in mammals. The other kind is brown adipose tissue. White adipose tissue is composed of monolocular adipocytes. In humans, the healthy amount of white adipose tissue varies with age, but composes between 6–25% of body weight in adult men and 14–35% in adult women.
Bone marrow adipose tissue (BMAT), sometimes referred to as marrow adipose tissue (MAT), is a type of fat deposit in bone marrow. It increases in states of low bone density, such as osteoporosis , [ 1 ] [ 2 ] anorexia nervosa / caloric restriction , [ 3 ] [ 4 ] skeletal unweighting such as that which occurs in space travel , [ 5 ] [ 6 ] and ...
Version of the hypothesis implicating failure to generate more adipocytes in tissue expandability. The adipose tissue expandability hypothesis posits that metabolic dysregulation that appears to be caused by excess weight, such as type 2 diabetes [1] and non-alcoholic fatty liver disease, [2] are triggered when an individual's capacity for storing excess calories in the subcutaneous adipose ...
Adipose tissue is an endocrine organ that secretes numerous protein hormones, including leptin, adiponectin, and resistin. [1] These hormones generally influence energy metabolism, which is of great interest to the understanding and treatment of type 2 diabetes and obesity. [2]
Senescent adipose progenitor cells in subcutaneous adipose tissue has been shown to suppress adipogenic differentiation. [37] Reduced adipogenesis in obese persons is due to increased senescent cells in adipose tissue rather than reduced numbers of stem/progenitor cells. [38]