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Obese plasma transfer accelerates cellular aging in the C57BL/6 mouse model.

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Area of Science:

  • Immunology
  • Metabolic research
  • Aging research

Background:

  • Obesity is linked to chronic inflammation and cellular senescence, impairing metabolic and immune functions.
  • Investigating the impact of obese plasma on senescence and inflammation markers is crucial for understanding obesity-related health issues.

Purpose of the Study:

  • To determine if plasma from obese mice induces senescence and inflammation in healthy recipient mice.
  • To assess the transferability of obesity-induced cellular aging and immune dysfunction.

Main Methods:

  • Recipient mice received weekly injections of plasma from obese or non-obese donors for four weeks.
  • Senescence markers (SA-β-gal activity, p16 expression) and inflammatory markers (IL-6, TNF-α) were measured in tissues and cells.
  • Body weight, adiposity, and thymus index were monitored.

Main Results:

  • Obese plasma significantly increased senescence markers in epididymal white adipose tissue and PBMCs.
  • Elevated expression of p16, IL-6, and TNF-α was observed in PBMCs of recipients of obese plasma.
  • No significant changes in body weight, adiposity, or thymus index were noted.

Conclusions:

  • Obese plasma actively transfers pro-inflammatory and pro-senescence effects to healthy recipients.
  • These findings suggest that obesity-associated aging and immune dysfunction can be transmitted via plasma.
  • Further research into therapeutic interventions targeting plasma-mediated effects is warranted.