title: Correlation between the donor age and the proliferative lifespan of human peritoneal mesothelial cells in vitro: is TGF-beta1 a link?
abstract: In the present study we have examined the relationship between calendar age of the donor and the proliferative lifespan and TGF-beta1 production by human peritoneal mesothelial cells (HPMC) in culture. The experiments were performed on primary omentum-derived HPMC isolated from patients undergoing elective abdominal surgery. There was an inverse relationship between the calendar age of the tissue donor and the replicative lifespan of HPMC in vitro (n=49, r=-0.3991, p<0.005). There was also a positive correlation between the donor's age and the magnitude of TGF-beta1 production by first-passage HPMC (n=28, r=0.5400, p<0.004). In turn, the TGF-beta1 levels correlated inversely with the proliferative lifespan of HPMC in vitro (n=28, r=-0.4671, p<0.02). These findings indicate that the reduced proliferative capacity of HPMC isolated from older donors may be associated with increased TGF-beta1 release, which may, in turn, result from the age-related accumulation of senescent HPMC in the peritoneum.
authors.affiliation: Department of Pathophysiology, Poznan University of Medical Sciences, Poznań, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Ksiazek
authors.forename: Marek
authors.initials: M
authors.lastname: Winckiewicz
authors.forename: Ryszard
authors.initials: R
authors.lastname: Staniszewski
authors.forename: Andrzej
authors.initials: A
authors.lastname: Breborowicz
authors.forename: Janusz
authors.initials: J
authors.lastname: Witowski
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000473:pathology* / Q000502:physiology*; D049109:Cell Proliferation; D002478:Cells, Cultured; D016922:Cellular Senescence / Q000502:physiology; D004847:Epithelial Cells / Q000166:cytology; D006801:Humans; D066298:In Vitro Techniques; D008875:Middle Aged; D009852:Omentum / Q000166:cytology; D010537:Peritoneum / Q000166:cytology*; D014019:Tissue Donors; D053773:Transforming Growth Factor beta1 / Q000502:physiology*
chemical_list: D053773:Transforming Growth Factor beta1