Fluorescence of putative chromophores in Skh-1 and citrate-soluble calf skin collagens

Autor: Abrienne M. Patta, Natalia Silvestrov, Imad K. Abukhalaf, Julian M. Menter, Isaac Willis

Publikováno v: Photodermatology, Photoimmunology & Photomedicine. 23:222-228

Background/purpose: Fluorescence of Skh-1 hairless mouse and calf skin acid-soluble type I collagens are envelopes of several bands putatively due to tyrosine (excitation/emission peak at 275/300 nm), dihydroxyphenylalanine (dopa; 280/325 nm), tyrosi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99de6760042b552cd81706d0ca4a55fd
https://doi.org/10.1111/j.1600-0781.2007.00312.x

Topical AC-11 abates actinic keratoses and early squamous cell cancers in hairless mice exposed to Ultraviolet A (UVA) radiation

Autor: Julian M Mentor, A. A. Etemadi, Noah Scheinfeld, Abrienne M. Patta

Publikováno v: Mentor, Julian M; Etemadi, Amir; Patta, Abrienne M; & Scheinfeld, Noah. (2015). Topical AC-11 abates actinic keratoses and early squamous cell cancers in hairless mice exposed to Ultraviolet A (UVA) radiation. Dermatology Online Journal, 21(4). Retrieved from: http://www.escholarship.org/uc/item/5rt46141

AC-11 is an aqueous extract of the botanical, Uncaria tomentosa, which has a variety of effects that enhance DNA repair and down regulate inflammation. AC-11 is essentially free of oxindole alkaloids (< 0.05%, w/w) but contains more than 8% carboxy a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d98e2153add7efae757f5e647d047ab
https://doi.org/10.5070/d3214026285

Effect of UV irradiation on type I collagen fibril formation in neutral collagen solutions

Autor: Robert M. Sayre, John C. Dowdy, Isaac Willis, Abrienne M. Patta, Julian M. Menter

Publikováno v: Photodermatology, Photoimmunology & Photomedicine. 17:114-120

Background: Collagens have the well-known ability to spontaneously self-associate to form fibrils at physiological temperature and neutral pH in vitro and in vivo. Because solar UV may photochemically alter collagen, the kinetics of fibril formation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6de75e08e9ec6105e47d79dfce029f79
https://doi.org/10.1034/j.1600-0781.2001.170302.x

Modest in vivo exposure to solar wavelengths induces a visible absorbing chromophore in Skh-1 mouse epidermis

Autor: John C. Dowdy, Robert M. Sayre, Abrienne M. Patta, Isaac Willis, Julian M. Menter, A. A. Etemadi, Johnathan Chappell

Publikováno v: Photodermatology, photoimmunologyphotomedicine. 20(5)

Background/purpose: In the previous work, we correlated epidermal hyperplasia with increased epidermal absorption in the 250–400 nm region. During a recent review of that work, the apparent formation of a chromophore, with absorption slightly longe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::815b5092ad7a4e0b7397a50ff39c728d
https://pubmed.ncbi.nlm.nih.gov/15379876

Photoprotection of mammalian acid-soluble collagen by cuttlefish sepia melanin in vitro

Autor: J M, Menter, A M, Patta, T D, Hollins, C L, Moore, I, Willis

Publikováno v: Photochemistry and photobiology. 68(4)

Several important clinical conditions can result in close association between the pigment melanin and dermal collagen. Because melanin and its precursors can be chemically reactive in ground and excited states, it is important to know whether the res

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::eac83514ec50593d129b8c72613ba93f
https://pubmed.ncbi.nlm.nih.gov/9796436