TY - JOUR
T1 - Culture medium enhances semicarbazide-sensitive amine oxidase activity
AU - Trent, M. B.
AU - Conklin, D. J.
AU - Boor, P. J.
N1 - Funding Information:
ACKNOWLEDGMENTS This work was supported by NIH Grant HL65416 (E J. B.), NIEHS Toxicology Training Grant ESO-7254 (D. J. C.), Grant 8750 from the Shriners Hospitals for Children, and John Scaly Memorial Endowment Grant 2516-99. We appreciate the disclosure of medium component concentrations by Cloneties, Inc., San Diego, California.
PY - 2002/10
Y1 - 2002/10
N2 - Components of fetal calf serum (FCS) are known to contribute to growth and maintenance of cultured cells. Fetal calf serum supplementation of media also may contribute to the cytotoxicity of other substances to cells grown in vitro. Semicarbazide-sensitive amine oxidase (SSAO) enzyme, present in FCS, metabolizes primary amines and contributes to amine cytotoxicity in vascular smooth muscle cells (VSMC). In cell culture experiments, the media used may greatly affect enzymic activities such as SSAO. In these studies, the SSAO activity in FCS, cultured rat aortic VSMC, and rat plasma was determined in the presence and absence of various culture media. Semicarbazide-sensitive amine oxidase activity in FCS (5-20 μl) was significantly enhanced (∼1.5- to 2-fold) in the presence of various culture media, with Dulbecco modified Eagle medium (DMEM), causing the greatest enhancement. Dulbecco modified Eagle medium enhanced the SSAO activity of cultured VSMC in two of the four passages but reduced activity in two passages. Activity in rat plasma was reduced by ∼25% in the presence of DMEM. The concentrations of various media components, such as glucose, sodium pyruvate, pyridoxine-HC1, and L-glutamine, were not correlated with enhancement. This study identifies an important enhancement effect of culture media on the FCS enzyme, SSAO, although the media components responsible for the enhancement are yet to be identified.
AB - Components of fetal calf serum (FCS) are known to contribute to growth and maintenance of cultured cells. Fetal calf serum supplementation of media also may contribute to the cytotoxicity of other substances to cells grown in vitro. Semicarbazide-sensitive amine oxidase (SSAO) enzyme, present in FCS, metabolizes primary amines and contributes to amine cytotoxicity in vascular smooth muscle cells (VSMC). In cell culture experiments, the media used may greatly affect enzymic activities such as SSAO. In these studies, the SSAO activity in FCS, cultured rat aortic VSMC, and rat plasma was determined in the presence and absence of various culture media. Semicarbazide-sensitive amine oxidase activity in FCS (5-20 μl) was significantly enhanced (∼1.5- to 2-fold) in the presence of various culture media, with Dulbecco modified Eagle medium (DMEM), causing the greatest enhancement. Dulbecco modified Eagle medium enhanced the SSAO activity of cultured VSMC in two of the four passages but reduced activity in two passages. Activity in rat plasma was reduced by ∼25% in the presence of DMEM. The concentrations of various media components, such as glucose, sodium pyruvate, pyridoxine-HC1, and L-glutamine, were not correlated with enhancement. This study identifies an important enhancement effect of culture media on the FCS enzyme, SSAO, although the media components responsible for the enhancement are yet to be identified.
KW - Cell culture
KW - Diabetes mellitus
KW - Hyperglycemia
KW - Vascular injury
KW - Vascular smooth muscle cells
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U2 - 10.1290/1071-2690(2002)038<0523:cmesao>2.0.co;2
DO - 10.1290/1071-2690(2002)038<0523:cmesao>2.0.co;2
M3 - Article
C2 - 12703980
AN - SCOPUS:0242669171
SN - 1071-2690
VL - 38
SP - 523
EP - 528
JO - In Vitro Cellular and Developmental Biology - Animal
JF - In Vitro Cellular and Developmental Biology - Animal
IS - 9
ER -