John C Dowdy

Summary

Publications

  1. doi request reprint Indoor tanning injuries: an evaluation of FDA adverse event reporting data
    John C Dowdy
    Rapid Precision Testing Laboratory, Cordova, TN 38016, USA
    Photodermatol Photoimmunol Photomed 25:216-20. 2009
  2. doi request reprint Photobiological safety evaluation of UV nail lamps
    John C Dowdy
    Rapid Precision Testing Laboratories, Cordova, TN, USA
    Photochem Photobiol 89:961-7. 2013
  3. doi request reprint FDA-sunlamp recommended Maximum Timer Interval And Exposure Schedule: consensus ISO/CIE dose equivalence
    John C Dowdy
    Rapid Precision Testing Laboratories, Cordova, TN, USA
    Health Phys 101:227-32. 2011
  4. doi request reprint Commentary on 'UVB-SPF': the SPF labels of sunscreen products convey more than just UVB protection
    Robert M Sayre
    Rapid Precision Testing Laboratory, Cordova, TN 38016, USA
    Photodermatol Photoimmunol Photomed 24:218-20. 2008
  5. ncbi request reprint Darkness at noon: sunscreens and vitamin D3
    Robert M Sayre
    Department of Medicine, Division of Dermatology, University of Tennessee Center for the Health Sciences, Memphis, TN, USA
    Photochem Photobiol 83:459-63. 2007
  6. doi request reprint Examination of solar simulators used for the determination of sunscreen UVA efficacy
    Robert M Sayre
    Rapid Precision Testing Laboratory, Cordova, TN, USA
    Photochem Photobiol 86:162-7. 2010
  7. doi request reprint Variability of pre-vitamin D3 effectiveness of UV appliances for skin tanning
    Robert M Sayre
    Div Dermatology, Dept of Medicine, University of Tennessee Health Science Center, Memphis, TN 38104, United States
    J Steroid Biochem Mol Biol 121:331-3. 2010
  8. doi request reprint The FDA proposed solar simulator versus sunlight
    Robert M Sayre
    Division of Dermatology, Department of Medicine, University of Tennessee Health Sciences Center, Memphis, TN 38103, USA
    Photochem Photobiol Sci 9:535-9. 2010
  9. ncbi request reprint The increase in melanoma: are dietary furocoumarins responsible?
    Robert M Sayre
    Division of Dermatology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38104, United States
    Med Hypotheses 70:855-9. 2008
  10. ncbi request reprint Simplified method to substantiate SPF labeling for sunscreen products
    Robert M Sayre
    Rapid Precision Testing Laboratories, Cordova, TN 38016, USA
    Photodermatol Photoimmunol Photomed 19:254-60. 2003

Collaborators

  • Robert M Sayre
  • Dennis L Lott
  • Ronald W Gottschalk
  • James G Shepherd
  • Edward Marlowe
  • Jeffrey E Berg
  • Mingyi W Trimble
  • Kelly A Harris
  • Andre J Gerwig
  • William J Shields
  • Roger V Lloyd
  • Joseph Stanfield

Detail Information

Publications15

  1. doi request reprint Indoor tanning injuries: an evaluation of FDA adverse event reporting data
    John C Dowdy
    Rapid Precision Testing Laboratory, Cordova, TN 38016, USA
    Photodermatol Photoimmunol Photomed 25:216-20. 2009
    ..The databases, MAUDE and its predecessor MDR, are available online. While these records, in part, are not intended for evaluation of adverse event rates, analysis provides insight into the etiology of UV-related tanning injuries...
  2. doi request reprint Photobiological safety evaluation of UV nail lamps
    John C Dowdy
    Rapid Precision Testing Laboratories, Cordova, TN, USA
    Photochem Photobiol 89:961-7. 2013
    ..These risks are further mitigated in realistic nonoccupational use scenarios as it is unlikely to be a daily occurrence...
  3. doi request reprint FDA-sunlamp recommended Maximum Timer Interval And Exposure Schedule: consensus ISO/CIE dose equivalence
    John C Dowdy
    Rapid Precision Testing Laboratories, Cordova, TN, USA
    Health Phys 101:227-32. 2011
    ....
  4. doi request reprint Commentary on 'UVB-SPF': the SPF labels of sunscreen products convey more than just UVB protection
    Robert M Sayre
    Rapid Precision Testing Laboratory, Cordova, TN 38016, USA
    Photodermatol Photoimmunol Photomed 24:218-20. 2008
    ....
  5. ncbi request reprint Darkness at noon: sunscreens and vitamin D3
    Robert M Sayre
    Department of Medicine, Division of Dermatology, University of Tennessee Center for the Health Sciences, Memphis, TN, USA
    Photochem Photobiol 83:459-63. 2007
    ..This raises important questions regarding the safest way to use sunlight exposure to promote healthy vitamin D3 levels and suggests the need to modify the public safety "Safe Sun" messages...
  6. doi request reprint Examination of solar simulators used for the determination of sunscreen UVA efficacy
    Robert M Sayre
    Rapid Precision Testing Laboratory, Cordova, TN, USA
    Photochem Photobiol 86:162-7. 2010
    ..Goodness of fit to this spectrum will produce UVA protection values predictive to those actually achieved in sunlight of different zenith angles...
  7. doi request reprint Variability of pre-vitamin D3 effectiveness of UV appliances for skin tanning
    Robert M Sayre
    Div Dermatology, Dept of Medicine, University of Tennessee Health Science Center, Memphis, TN 38104, United States
    J Steroid Biochem Mol Biol 121:331-3. 2010
    ..Guidance for optimal use of tanning sources for vitamin D benefit is needed...
  8. doi request reprint The FDA proposed solar simulator versus sunlight
    Robert M Sayre
    Division of Dermatology, Department of Medicine, University of Tennessee Health Sciences Center, Memphis, TN 38103, USA
    Photochem Photobiol Sci 9:535-9. 2010
    ..In fact, by our analysis, none of the solar simulators we examined would be expected to produce the same SPF as sunlight...
  9. ncbi request reprint The increase in melanoma: are dietary furocoumarins responsible?
    Robert M Sayre
    Division of Dermatology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38104, United States
    Med Hypotheses 70:855-9. 2008
    ..We hypothesize that the increases in cutaneous melanoma incidence may be in part related to concomitant increases in dietary photocarcinogenic furocoumarins...
  10. ncbi request reprint Simplified method to substantiate SPF labeling for sunscreen products
    Robert M Sayre
    Rapid Precision Testing Laboratories, Cordova, TN 38016, USA
    Photodermatol Photoimmunol Photomed 19:254-60. 2003
    ..The method we propose addresses two primary reasons for this unreliability: 1) difficulties in applying products uniformly and 2) the subjectivity and variability of perception in evaluating and grading responses to UV doses...
  11. ncbi request reprint A practical UV source to induce Herpes simplex labialis lesions in the clinic
    Robert M Sayre
    Division of Dermatology, Department of Medicine, University of Tennessee Center for the Health Sciences, Memphis, TN, USA
    Photodermatol Photoimmunol Photomed 23:20-3. 2007
    ..Ultraviolet (UV) sources have been used to clinically induce herpes simplex lesions in the lips of susceptible individuals...
  12. doi request reprint Holick's rule and vitamin D from sunlight
    John C Dowdy
    Rapid Precision Testing Laboratories, Cordova, TN 38016, United States
    J Steroid Biochem Mol Biol 121:328-30. 2010
    ..This redefinition of SDD impacts risk/benefit assessments of optimal/feasible sun exposure for vitamin D maintenance and the application of Holick's rule to rational public health messages...
  13. ncbi request reprint Unexpected photolysis of the sunscreen octinoxate in the presence of the sunscreen avobenzone
    Robert M Sayre
    Rapid Precision Testing Laboratories, Cordova, TN 38016, USA
    Photochem Photobiol 81:452-6. 2005
    ....
  14. doi request reprint Comparative effectiveness of clinically used light sources for cutaneous protoporphyrin IX-based photodynamic therapy
    Robert M Sayre
    University of Tennessee Health Science Center, Department of Medicine, Division of Dermatology, Memphis, TN, USA
    J Cosmet Laser Ther 13:63-8. 2011
    ....
  15. ncbi request reprint Mineralization of organic sunscreens: interesting, but relevant? Comment and response
    Robert M Sayre
    Rapid Precision Testing Laboratories, PO Box 1342, Cordova, TN 30188 1342, USA
    Photochem Photobiol Sci 2:1050-1; discussion 1051. 2003