Gene Expression Profiling and Clinical Characterization of Phototoxicity

National Institute Of Arthritis And Musculoskeletal And Skin Diseases

Investigators

Abstract

In 2010, the protocol was amended to allow us to treat a subset of returning healthy volunteers with doxycycline to obtain additional biopsies. In 2011, we completed treatment of the additional healthy volunteers. In 2012, we completed the analysis of immunohistochemical staining of the additional biopsies obtained from healthy volunteers treated with doxycycline. In fiscal year 2013, we investigated the serum levels of doxycycline from the healthy volunteers who participated in the study in previous years. In fiscal year 2017, the protocol was amended to allow additional investigation of skin samples post-UV exposure which were inconclusive. Based upon the clinical research experience from treating healthy volunteers with doxycycline, a protocol was subsequently developed to analyze the human microbiome alterations associated with doxycycline ingestion. The findings of that study were published in fiscal year 2022.