The post-adipocytic phase of the adipose cell cycle.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Subcutaneous white adipose tissue harvested by liposuction has been studied with the aim to understand how the adipocytes modify their morphology when subjected to the passage in a needle for liposuction and to cryopreservation. The work try to clarify the ultrastructural aspects of adipose tissue, in the conditions described before, examining samples of body fat employed in fat graft procedures, and samples after cryopreservation. Scanning and transmission electron microscopy show that the first event that occur in the adipocytes is a lesion of mild degree detectable early in the samples fixed immediately after liposuction. The sequence of events following the adipocyte stress appeared composed by different phases: plasmatic membrane interruption, loss of lipid charge, formation of cup-like adipocytes and formation of post-adipocytes (i.e. cells that survive to traumatic events and restart to internalize lipid droplets). In conclusion, the study suggests that the loss of lipid charge in adipose cell is an active process that can be due to a small hole in the cytoplasmic membrane with the preservation of a large part of the cytoplasmatic content and that at the end of the process of lipid extrusion the cell can maintain viability.

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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