Relationship of cell growth to collagen synthesis in glucocorticoid treated A/J and C57BL6/J neonatal mouse dermal fibroblasts.
Primary cultures of neonatal dermal fibroblasts from two strains of mice (A/J and C57BL6/J) were utilized as an in vitro system to investigate the effects of glucocorticoids on cell growth and collagen synthesis. Protein and DNA synthesis were lower in untreated (control) A/J fibroblasts than in C57BL6/J fibroblasts. Treatment with glucocorticoids for 4 days resulted in dose-dependent inhibition of [3H]thymidine incorporation into DNA and a reduction in collagen synthesis. Collagen synthesis was differentially more susceptible to glucocorticoids than was total protein synthesis. Neonatal dermal fibroblasts obtained from A/J mice were more sensitive to glucocorticoids than were cells from C57BL6/J mice. Reduction in collagen production by anti-inflammatory steroids in this system may be related to adverse effects observed in vivo following treatment with these steroids.
D000818:Animals; D000831:Animals, Newborn; D002455:Cell Division / Q000187:drug effects*; D003094:Collagen / Q000096:biosynthesis*; D004247:DNA / Q000096:biosynthesis; D004305:Dose-Response Relationship, Drug; D005260:Female; D005347:Fibroblasts / Q000187:drug effects*; D005938:Glucocorticoids / Q000494:pharmacology*; D051379:Mice; D008805:Mice, Inbred A; D008810:Mice, Inbred C57BL; D011247:Pregnancy; D012867:Skin / Q000166:cytology*
D005938:Glucocorticoids; D003094:Collagen; D004247:DNA