Sun Damaged Skin Clinical Trial
Official title:
Singlet Oxygen Quantification After Skin Exposure to Ultraviolet A (UVA) Light
Verified date | May 2023 |
Source | University of California, Davis |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The objective of this study is quantification of singlet oxygen species in the skin after exposure to Ultraviolet A (UVA) light
Status | Completed |
Enrollment | 17 |
Est. completion date | February 2, 2018 |
Est. primary completion date | February 2, 2018 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Subjects aged 18 years and older Exclusion Criteria: - Those who are currently smoking or have smoked within the past 3 years. - Aspirin use - Multivitamins and supplements that contain vitamin E - Adults unable to consent - Individuals who are not yet adults (infants, children, teenagers) - Pregnant women - Prisoners |
Country | Name | City | State |
---|---|---|---|
United States | University of California, Davis | Sacramento | California |
Lead Sponsor | Collaborator |
---|---|
University of California, Davis |
United States,
Hanson KM, Clegg RM. Observation and quantification of ultraviolet-induced reactive oxygen species in ex vivo human skin. Photochem Photobiol. 2002 Jul;76(1):57-63. doi: 10.1562/0031-8655(2002)0762.0.co;2. — View Citation
Langstaff SR. Nursing care study. Rheumatoid arthritis treated with penicillamine. Nurs Times. 1975 Jun 12;71(24):918-9. No abstract available. — View Citation
Menter JM, Hatch KL. Clothing as solar radiation protection. Curr Probl Dermatol. 2003;31:50-63. doi: 10.1159/000072237. — View Citation
Sklar LR, Almutawa F, Lim HW, Hamzavi I. Effects of ultraviolet radiation, visible light, and infrared radiation on erythema and pigmentation: a review. Photochem Photobiol Sci. 2013 Jan;12(1):54-64. doi: 10.1039/c2pp25152c. — View Citation
Tewari A, Grage MM, Harrison GI, Sarkany R, Young AR. UVA1 is skin deep: molecular and clinical implications. Photochem Photobiol Sci. 2013 Jan;12(1):95-103. doi: 10.1039/c2pp25323b. — View Citation
Wang F, Smith NR, Tran BA, Kang S, Voorhees JJ, Fisher GJ. Dermal damage promoted by repeated low-level UV-A1 exposure despite tanning response in human skin. JAMA Dermatol. 2014 Apr;150(4):401-6. doi: 10.1001/jamadermatol.2013.8417. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Amount of singlet oxygen generated by the left forearm skin (2 cm^2) after exposure to UVA radiation dose of 0.33 J/cm2 | 5 minutes at first visit | ||
Primary | Amount of singlet oxygen generated by the left forearm skin (2 cm^2) after exposure to UVA radiation dose of 8.25 J/cm2 | 5 minutes at first visit | ||
Primary | Amount of singlet oxygen generated by the left forearm skin (2 cm^2) after exposure to UVA radiation dose of 16.5 J/cm2 | 5 minutes at first visit | ||
Secondary | Difference in singlet oxygen (as measured by singlet oxygen molecule numbers) generated between individuals of different skin Fitzpatrick skin types | Within 24 hours | ||
Secondary | Difference in singlet oxygen (as measured by thymidine dimer %) generated between individuals of different skin Fitzpatrick skin types | Within 24 hours | ||
Secondary | Difference in singlet oxygen generation with avobenzone and zinc oxide sunscreens (sun protection factor 30 and 2mg/cm^2 applied for each) vs control (no sunscreen) after exposure to 444.1millijoules (mJ) /cm2 UVA exposure | Difference in singlet oxygen generation (as measured by thymidine dimer %) with two different sunscreens (zinc oxide and avobenzone, each sun protection factor 30 and 2mg/cm^2 applied) vs control (no sunscreen) after exposure to 444.1mJ/cm2 UVA exposure | Within 24 hours | |
Secondary | Difference in singlet oxygen generation with avobenzone and zinc oxide sunscreens (sun protection factor 30 and 2mg/cm^2 applied for each) vs control (no sunscreen) after exposure to 444.1millijoules (mJ) /cm2 UVA exposure | Difference in singlet oxygen generation (as measured by singlet oxygen molecule numbers) with two different sunscreens (zinc oxide and avobenzone, each sun protection factor 30 and 2mg/cm^2 applied) vs control (no sunscreen) after exposure to 444.1mJ/cm2 UVA exposure | Within 24 hours | |
Secondary | Change in appearance of skin pigmentation as measured by colorimetry after UVA exposure | Within 24 hours |
Status | Clinical Trial | Phase | |
---|---|---|---|
Active, not recruiting |
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