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Actinic keratoses

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https://www.readbyqxmd.com/read/28336806/fluorouracil-enhances-photodynamic-therapy-of-squamous-cell-carcinoma-via-a-p53-independent-mechanism-that-increases-protoporphyrin-ix-levels-and-tumor-cell-death
#1
Sanjay Anand, Kishore R Rollakanti, Niokelta Brankov, Douglas E Brash, Tayyaba Hasan, Edward V Maytin
Photodynamic therapy (PDT), using 5-aminolevulinic acid (ALA) to drive synthesis of protoporphryin IX (PpIX) is a promising, scar-free alternative to surgery for skin cancers, including squamous cell carcinoma (SCC) and SCC precursors called actinic keratoses (AK). In the United States, PDT is only FDA approved for treatment of AK; this narrow range of indications could be broadened if PDT efficacy were improved. Toward that goal, we developed a mechanism-based combination approach using 5-fluorouracil (5-FU) as a neoadjuvant for ALA-based PDT...
March 23, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28329661/predictors-of-actinic-keratosis-count-in-those-with-multiple-keratinocyte-carcinomas
#2
Julia A Siegel, Adam J Luber, Martin A Weinstock
Actinic keratoses (AKs) are frequently treated in the U.S., impacting an estimated 40 million people in 2004 and costing over $1 billion annually. AKs are a major public health concern because of their high prevalence, substantial cost, and potential for malignant transformation to keratinocyte carcinoma (KC). In this analysis, predictors of AK count were explored using pre-randomization baseline data from two large randomized trials of veterans with multiple prior KCs (n=932 and n=1131). Multivariate analyses were conducted to elucidate associations between AK count and several demographic and health related factors...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329655/new-keratinocyte-carcinomas-worsen-skin-related-quality-of-life
#3
Julia A Siegel, Mary-Margaret Chren, Martin A Weinstock
Keratinocyte carcinoma (KC) is the most common malignancy in the U.S. Because KC affects many people but has a low mortality rate, it is important to consider the impact of KC on skin-related quality of life (QoL). We aimed to determine if KCs, actinic keratoses (AKs), and several demographic and health-related factors were associated with skin- related QoL in those at high risk for KC. We used data from a double-blind, placebo- controlled trial in which 932 veterans with multiple prior KCs were randomized to apply topical 5-fluorouracil (5-FU) or vehicle control cream to the face/ears...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329648/hormonal-and-reproductive-factors-and-incidence-of-basal-cell-carcinoma-in-a-population-based-cohort
#4
Catherine M Olsen, Nirmala Pandeya, Bridie S Thompson, Jean Claude Dusingize, Padmini Subramaniam, Christina M Nagle, Adele C Green, Rachel E Neale, Penny M Webb, David C Whitman
Estrogens have photosensitizing properties, but few prospective studies have examined the relationship between hormonal and reproductive factors and incidence of basal cell carcinoma (BCC) in women. Previous findings have been inconsistent, particularly in relation to parity and use of oral contraceptives (OCs) and menopausal hormone therapy (MHT). Given the heterogeneity in the literature, we sought to examine the association between hormonal and reproductive factors and BCC risk in a cohort of women (n=23,879) enrolled in the QSkin Study in 2011...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329624/actinic-keratoses-progress-more-quickly-to-squamous-cell-carcinoma-than-basal-cell-carcinoma
#5
Julia A Siegal, Joanna L Walker, Moniyka Sachar, Robert A Lew, Suephy C Chen, Susan M Swetter, Robert P Dellavalle, George P Stricklin, Martin A Weinstock
Actinic keratoses (AK) are common, costly, and may evolve to keratinocyte carcinoma (KC): basal cell (BCC) and squamous cell carcinoma (SCC) of the skin. Time to malignant transformation is controversial. We used data from the placebo arm (n=166) of a randomized trial of veterans with multiple prior KCs. Study dermatologists examined participants' faces/ears at enrollment and semiannual visits. Clinically diagnosed AKs were marked, photographed, and treated with cryotherapy (starting at 6 months). Lesions suspicious for KC were marked, photographed, and biopsied...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329576/5-fluorouracil-induced-exacerbation-of-rosacea
#6
Ellen S Haddock, Philip R Cohen
Background Topical 5-fluorouracil (5-FU) is an antineoplastic antimetabolite used for the treatment of actinic keratosis.Purpose A 66-year-old man with erythematotelangiectatic rosacea and biopsy-confirmed actinic keratoses who experienced a rosacea exacerbation after initiating topical 5-FU treatment of his actinic keratoses is described and this adverse event associated with 5-FU is reviewed.Materials and methods Using PubMed.gov the following terms were searched and relevant citations were assessed: rosacea and 5-fluorouracil...
November 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329483/the-use-of-a-sunscreen-containing-dna-photolyase-in-the-treatment-of-patients-with-field-cancerization-and-multiple-actinic-keratoses-a-case-series
#7
C Navarrete-Dechent, M Molgó
Cutaneous field cancerization (CFC) is associated witha high-risk of developing cutaneous squamous cellcarcinoma (cSCC). It manifests as actinic keratoses(AK) as one of the few macroscopic alterations in CFCpatients. A prospective, single-arm, case-series wasperformed to evaluate the utility of a novel sunscreencontaining DNA-photolyase for treatment of CFCin nine subjects (mean age 70.6 years, male: femaleratio 5:4). The cream was applied topically twicedaily on CFC/AK areas and patients were followedup for three months, with no other treatments...
January 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28322200/complement-component-c3-and-complement-factor-b-promote-growth-of-cutaneous-squamous-cell-carcinoma
#8
Pilvi Riihilä, Liisa Nissinen, Mehdi Farshchian, Markku Kallajoki, Atte Kivisaari, Seppo Meri, Reidar Grénman, Sirkku Peltonen, Juha Peltonen, Taina Pihlajaniemi, Ritva Heljasvaara, Veli-Matti Kähäri
Cutaneous squamous cell carcinoma (cSCC) is one of the most common metastatic skin cancers with increasing incidence. We examined the roles of complement component C3 and complement factor B (CFB) in the growth of cSCC. Analysis of cSCC cell lines (n = 8) and normal human epidermal keratinocytes (n = 11) with real-time quantitative PCR and Western blotting revealed up-regulation of C3 and CFB expression in cSCC cells. Immunohistochemical staining revealed stronger tumor cell-specific labeling for C3 and CFB in invasive cSCCs (n = 71) and recessive dystrophic epidermolysis bullosa-associated cSCCs (n = 11) than in cSCC in situ (n = 69), actinic keratoses (n = 63), and normal skin (n = 5)...
March 16, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28321860/nicotinamide-for-skin-cancer-chemoprevention
#9
REVIEW
Diona L Damian
Nicotinamide (vitamin B3 ) has a range of photoprotective effects in vitro and in vivo; it enhances DNA repair, reduces UV radiation-induced suppression of skin immune responses, modulates inflammatory cytokine production and skin barrier function and restores cellular energy levels after UV exposure. Pharmacological doses of nicotinamide have been shown to reduce actinic keratoses and nonmelanoma skin cancer incidence in high-risk individuals, making this a nontoxic and accessible option for skin cancer chemoprevention in this population...
March 20, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28301624/photodynamic-therapy-effectively-treats-actinic-keratoses-without-pre-illumination-incubation-time
#10
Jessica Gandy, Brian Labadie, Dina Bierman, Christopher Zachary
<p>BACKGROUND: Actinic keratoses (AKs) are dysplastic lesions of the epidermis that have the potential to progress to non-melanoma skin cancers (NMSC). Traditional photodynamic therapy (PDT) requires a pre-illumination incubation time, which adds to overall in-office time and has been linked to pain. Our group has found a novel protocol to effectively treat AKs with PDT that eliminates the pre-illumination incubation period and uses 2 back-to-back cycles of 16 minute 40 seconds.</p> <p>METHODS: The patient was prepped with soapy water and isopropyl alcohol, and thick AKs were descaled with a curette...
March 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28300445/botanicals-with-dermatologic-properties-derived-from-first-nations-healing
#11
Sophia Colantonio, Jason K Rivers
INTRODUCTION: First Nations people have a long history of working with medicinal plants used to treat skin diseases. The purpose was to assess the dermatologic therapeutic potential of western red cedar, white spruce, birch, balsam poplar, and black spruce. METHODS: Based on expert recommendations, 5 trees were selected that were used in First Nations medicine for cutaneous healing and have potential and/or current application to dermatology today. We searched several databases up to June 12, 2014...
February 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28295654/the-freeze-thaw-cycle-in-cryosurgery-response-to-dr-david-buckley
#12
Christos C Zouboulis
I thank Dr. Buckley, an experienced cryosurgeon, for his kind letter. Indeed, cryosurgery is a powerful therapeutic regimen for virus-induced epithelial diseases, precancerous skin lesions and superficial epithelial tumors in the hands of physicians experienced in cryosurgery (1). The unti recently published findings on the treatment of actinic keratoses with cryosurgery neither correspond to the clinical experience of Dr. Buckley nor to mine. This is probably the reason that led Dr. Buckley to propose a more detailed procedure of the treatment of actinic keratoses with cryosurgery...
March 10, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28295176/active-sunscreen-ingredients-in-australia
#13
REVIEW
Francis Hx Yap, Hock C Chua, Clare P Tait
UV radiation exposure is the major contributor to photocarcinogenesis and photoageing. Reducing UV radiation exposure can be achieved by using adequate sunscreen preparations. The use of sunscreen can significantly reduce the incidence of squamous cell carcinoma, actinic keratoses and invasive melanoma. In the Australian market over 900 sunscreen products are available, each with their own brand, formulation and ingredients. It can be difficult for dermatologists and consumers to determine which are the most effective and appropriate products to use...
March 10, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28270072/topical-ingenol-mebutate-a-new-treatment-modality-for-multiple-actinic-keratoses-and-field-cancerization
#14
Kresimir Kostovic, Sandra Jerkovic Gulin, Zrinka Bukvic Mokos, Romana Ceovic
BACKGROUND: Ingenol mebutate gel is a recent stirring weapon recommended for the treatment of multiple actinic keratoses (AKs) and field cancerization. This review brings a summary of recent data on the treatment of AKs with ingenol mebutate (IM) providing critical commentary with regard to drug&#039;s characteristics, drug&#039;s safety profile, treatment regimen, treatment outcome, patient compliance, AK recurrence, cost-effectiveness and cost-utility, as well as guidelines for the management of the treatment of AK...
February 13, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28264612/a-dose-finding-trial-with-a-novel-ingenol-derivative-ingenol-disoxate-leo-43204-for-field-treatment-of-actinic-keratosis-on-full-face-or-250cm-2-on-the-chest
#15
Marc Bourcier, Linda Stein Gold, Lyn Guenther, Camilla M Andreassen, Johan Selmer, Gary Goldenberg
PURPOSE: Actinic keratoses (AKs) may progress to squamous cell carcinoma and can occur in cancerized fields as sub-clinical and clinically visible lesions. Ingenol disoxate gel is a topical field therapy for AK. This Phase I/II trial aimed to assess the safety and efficacy of ingenol disoxate on full face or chest in patients with AKs. MATERIALS AND METHODS: Part 1 was a phase-I, open-label, dose-escalation trial investigating the maximum tolerated dose of ingenol disoxate...
March 7, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28263021/the-importance-of-treating-the-field-in-actinic-keratosis
#16
REVIEW
E Stockfleth
Actinic keratoses (AKs) are intraepithelial atypical proliferations of keratinocytes that develop in skin that has undergone long-term exposure to ultraviolet radiation. Given the ageing population and an increasing prevalence of AK, the socio-economic burden of AK is likely to rise over the coming years. Areas of subclinical (non-visible) sun damage in the periphery of visible AK lesions contain the same genetic changes as those found in the lesions themselves, and are known as areas of field cancerization...
March 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28244084/intense-pulsed-light-combined-with-methyl-aminolaevulinate-for-treating-actinic-keratoses-and-photoaged-skin-of-the-dorsal-hands-has-considerable-advantages-however-is-it-worth-the-extra-expense
#17
https://www.readbyqxmd.com/read/28225978/daylight-photodynamic-therapy-experience-and-safety-in-treatment-of-actinic-keratoses-of-the-face-and-scalp-in-low-latitude-and-high-brightness-region
#18
Luiz Eduardo Garcia Galvão, Heitor de Sá Gonçalves, Karine Paschoal Botelho, Juliana Chagas Caldas
Daylight photodynamic therapy has been used in countries with high latitudes during the summer for actinic keratoses treatment with reports of similar efficacy to conventional photodynamic therapy. We evaluate its safety in 20 patients in the city of Fortaleza, a local with low latitude and high brightness. Sixteen patients did not report any discomfort due to the procedure. Daylight photodynamic therapy is an easy application method with great tolerability by the patient and has the possibility of being performed throughout the year in these regions...
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28224020/ingenol-mebutate-topical-gel-a-status-report-on-clinical-use-beyond-actinic-keratosis
#19
James Q Del Rosso
Ingenol mebutate is available as a topical gel formulation approved for the treatment of actinic keratosis. Two different concentrations are available for treatment of actinic keratoses at specific anatomic sites with the advantages of short durations of therapy and limited "down time" related to visible inflammation as compared to other topical agents. Due to the various modes of action of ingenol mebutate, it has also been used for treatment of disease states other than actinic keratosis. This manuscript discusses the suggested modes of action of ingenol mebutate and reviews publications on the use of ingenol mebutate gel for cutaneous disorders other than actinic keratosis, including squamous cell carcinoma in-situ, basal cell carcinoma, actinic cheilitis, anogenital warts, and others...
November 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28221211/a-rare-case-of-ck20-ck7-double-negative-merkel-cell-carcinoma
#20
Mary D Le, Luke H OʼSteen, David S Cassarino
The authors present a case of Merkel cell carcinoma (MCC) with unique immunohistochemical staining characteristics. A 57-year-old woman presented with a firm 0.3 cm tan papule on her left nasal-labial fold that was reportedly increasing in size and bleeding. She had a history of multiple head and neck actinic keratoses, papillary thyroid carcinoma, and a family history of an uncle with melanoma. The clinical differential diagnosis was "non-melanoma skin cancer." Histological examination showed a markedly atypical-appearing basaloid neoplasm, present mostly in the dermis, with focal pagetoid spread into the epidermis...
March 2017: American Journal of Dermatopathology
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