Table of Contents
To view the fulltext, log-in or choose pay-per-view options:
Get Access

Antiproliferative Effect of Vitamin A and D Analogues on Adult Human Keratinocytes in vitro

Popadic S.a, b · Ramic Z.a · Medenica L.b · Mostarica Stojkovic M.a · Trajković V.a · Popadic D.a
Institutes of aMicrobiology and Immunology, and bDermatovenereology, School of Medicine, University of Belgrade, Belgrade, Serbia Skin Pharmacol Physiol 2008;21:227–234 (DOI:10.1159/000135639)


Background: Vitamin A and D analogues play an important role in epidermal homeostasis and are used in the treatment of various skin diseases. The failure of retinoid and vitamin D treatments is sometimes difficult to explain. Methods: We analyzed the effect of all-trans retinoic acid (all-trans RA), 13-cis retinoic acid (13-cis RA), ergocalciferol and cholecalciferol in keratinocyte cultures established from adult donors, on the cell proliferation by means of [3H]thymidine incorporation and apoptosis after fluorescein diacetate/trypan blue staining. Results: All tested agents exerted a dose-dependent inhibition of keratinocyte proliferation in the concentration range of 1.25–5 µM. Based on IC50 values, the antiproliferative efficiency was as follows: cholecalciferol > ergocalciferol = all-trans RA > 13-cis RA. The observed effect of cholecalciferol and ergocalciferol, but not retinoids, involved the induction of apoptotic cell death. Combining vitamins A and D did not further increase the proliferation block and even displayed an antagonistic effect. Conclusion: The susceptibility of keratinocytes to the antiproliferative action of vitamins A and D was markedly different in cell cultures derived from different donors, indicating a possible predictive value of the in vitro testing for the efficiency of the clinical response to these agents.


Individual Users: Register with Karger Login Information

Please create your User ID & Password

Contact Information

I have read the Karger Terms and Conditions and agree.

Pay-per-View Options
Direct payment This item at the regular price: USD 38.00
Payment from account With a Karger Pay-per-View account (down payment USD 150) you profit from a special rate for this and other single items.
This item at the discounted price: USD 26.50