Off-campus Pacific University users: To download campus access theses and dissertations, please log into our proxy server with your PUNet ID and password.

Non-Pacific University users: Please talk to your librarian about requesting this thesis or dissertation through interlibrary loan.

Theses or dissertations that have a specific embargo period indicated below will not be available to anyone until the date indicated.

Date of Graduation

8-12-2000

Degree Type

Capstone Project (On-Campus Access Only)

Degree Name

Master of Science in Physician Assistant Studies

First Advisor

Robert Rosenow, PharmD, OD

Abstract

Background: Actinic Keratoses (AK) are erythematous, hyperkeratotic epidermal and pre-malignant lesions that commonly occur on aging, sun-exposed regions of the skin. These lesions, in predisposed individuals, may progress to squamous cell carcinoma. AK's frequently develop in middle-aged, fair skiIIDed caucasians following chronic overexposure to ultraviolet light. They present as multiple lesions on the face, forearms and hands,and are typically scaly and firm, measuring less than 1 cm in diameter. Current treatment of AK is limited to surgical removal, cryotherapy or topical 5-fluorouracil (5-FU). Topical Tretinoin has been tested as a single agent for the treatment of AK with favorable results. However, prior studies have failed to demonstrate a statistical significance with the use of Tretinoin compared to vehicle. Given the lack of large-scale, double blind studies, further investigation is necessary to determine its clinical utility for this condition.

Methods: 410 patients with AK completed the multi-investigational, double-blind-study in which 203 applied 0.1 % tretinoin cream, and 207 applied the vehicle to the face twice daily for 24 weeks. Patients' AK lesions were evaluated clinically throughout the study and by histological analysis of skin biopsy specimens taken before therapy and at the end of treatment.

Results: At the end of treatment the number of AK's o fthe face were reduced. There was a-55% (p

Conclusion: By clinical and histologic evaluation, 0.1 % tretinoin cream reduces the number of facial actinic keratoses with an acceptable safety profile.

Comments

The digital version of this project is currently unavailable to off-campus users; however, it may be requested via interlibrary loan by eligible borrowers from Pacific University Library. Pacific University Library is a free lender. (Library Use: NL)

Share

COinS