10 rezultatima
The acute reactions of human skin to solar ultraviolet radiation (290-400 nm) are recognized as a form of inflammation reactions that are mediated by several possible mechanisms including (a) direct action of photons on DNA, (b) generation of reactive free radicals and reactive oxygen species
OBJECTIVE
The objective of this study was to determine the safety of oral Polypodium leucotomos extract administered twice daily to healthy adults for 60 days and assess its ability to provide protection against exposure to ultraviolet radiation.
METHODS
This was a randomized, double-blind,
Sunburn, immune suppression, photoaging, and skin cancers result from uncontrolled overexposure of human skin to solar ultraviolet radiation (UVR). Preventive measures, including photoprotection, are helpful and can be achieved by topical sunscreening agents. Polypodium leucotomos (PL) has been used
BACKGROUND
UV radiation and the presence of melanocytic nevi are the main risk factors of sporadic melanoma (MM). Protection of skin by an oral photoprotective agent would have substantial benefits.
OBJECTIVE
We investigated the possible role of an oral Polypodium leucotomos (PL) extract to improve
BACKGROUND
The effects on the inflammatory and tanning responses of sunlight/UVR of several oral antioxidants are still unknown.
OBJECTIVE
Assess intensity, time course of the inflammatory, and tanning responses to increasing dosages of solar-simulated radiation (SSR) at baseline and after oral
As the understanding of the immune system pathways, cytokine balances, and cellular interactions continues to expand, so must the potential applications of therapies that can impact the process of diseases instead of just controlling their symptoms. In the case of Polypodium leucotomos extract,
OBJECTIVE
Polypodium leucotomos extract is a commonly used systemic photoprotective agent. In an exploratory fashion, the current study aimed to compare the effects of oral supplementation with a fixed Polypodium leucotomos/pomegranate combination (PPmix®) versus Polypodium leucotomos alone
Introduction: Melasma is a common pigmentary disorder with a multifactorial etiology that can hinder its management. The aqueous extract of the fern Polypodium leucotomos (PLE), Fernblock® (IFC, Madrid, Spain), has demonstrated antioxidant and photoprotective activities and has been used for the
BACKGROUND
UV radiation induces damage to human skin. Protection of skin by an oral photoprotective agent would have substantial benefits. Objective We investigated the photoprotective effect of oral administration of an extract of the natural antioxidant Polypodium leucotomos (PL).
METHODS
A total
Vandetanib is a tyrosine kinase inhibitor approved by the United States Food and Drug Administration for the treatment of metastatic medullary thyroid cancer. It has been linked to a variety of dermatologic reactions, including photosensitivity. We describe the case of a 55-year-old man who