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https://www.readbyqxmd.com/read/28329662/the-preneoplastic-genome-transcriptomic-drivers-of-squamous-cell-carcinoma-development
#1
Kenneth Y Tsai
Cutaneous squamous cell carcinoma (cuSCC) comprises 15-20% of all skin cancers, accounting for over 700,000 cases in the U.S. annually. Most cuSCC arise in association with a distinct precancerous lesion, the actinic keratosis (AK). In order to identify potential targets for molecularly targeted chemoprevention, we performed integrated cross-species genomic analysis of cuSCC development through the preneoplastic AK stage using matched human samples and a solar UV- driven Hairless mouse model. We performed RNA-seq and microRNA-seq on samples from both patients undergoing Mohs surgery and the mouse model...
September 15, 2016: Dermatology Online Journal
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/28329624/actinic-keratoses-progress-more-quickly-to-squamous-cell-carcinoma-than-basal-cell-carcinoma
#3
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/28329483/the-use-of-a-sunscreen-containing-dna-photolyase-in-the-treatment-of-patients-with-field-cancerization-and-multiple-actinic-keratoses-a-case-series
#4
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/28301622/expert-consensus-on-cosmetic-outcomes-after-treatment-of-actinic-keratosis
#5
Brian Berman, Glynis R Ablon, Neal D Bhatia, Roger I Ceilley, David J Goldberg, Mark S Nestor, Susan H Weinkle
<p>Dermatologists treat actinic keratosis (AK) primarily because these lesions have the potential to progress to invasive squamous cell carcinoma. Patients, on the other hand, generally seek treatment to remove the lesions and achieve an improved appearance of their skin following treatment. In selecting a treatment option for AK, dermatologists should consider post-treatment cosmesis, because cosmetic outcomes differ across AK treatments. To obtain expert opinion on the cosmetic sequelae related to chronically photodamaged skin and the treatment of AK, an expert panel meeting among dermatologists was conducted in February 2016...
March 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28300852/regression-analysis-of-local-skin-reactions-to-predict-clearance-of-actinic-keratosis-on-the-face-in-patients-treated-with-ingenol-mebutate-gel-experience-from-randomized-controlled-trials
#6
Shelbi Jim On, Kim Mark Knudsen, Torsten Skov, Mark Lebwohl
<p>Ingenol mebutate gel, a topical field treatment for actinic keratosis (AK), elicits inflammatory application-site reactions in most patients. This analysis explored the relationship between the intensity of local skin reactions (LSRs) and AK clearance, measured by the reduction in AK count from baseline in 218 patients who were treated for AK on the face in the pivotal Phase 3 studies. The analysis modeled the AK count at week 8, adjusted for baseline count, with the composite LSR score at 1 day after the last treatment application for each patient as a predictor to estimate the mean and 90% prediction interval for the percent reduction in AK count...
February 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28270072/topical-ingenol-mebutate-a-new-treatment-modality-for-multiple-actinic-keratoses-and-field-cancerization
#7
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
#8
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/28263022/the-importance-of-patient-centred-care-to-overcome-barriers-in-the-management-of-actinic-keratosis
#9
REVIEW
R Cerio
Visible actinic keratosis (AK) lesions and subclinical (non-visible) sun damage in the field of cancerization are associated with risk of both non-melanoma skin cancer, including basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), and, more rarely, melanoma. As the incidences of AK and skin cancer are increasing, effective prevention and treatment of AK is essential to minimize disease burden and improve patient quality of life. Currently, AK lesions are often left untreated and field therapies are underused...
March 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28263021/the-importance-of-treating-the-field-in-actinic-keratosis
#10
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/28263020/from-actinic-keratosis-to-squamous-cell-carcinoma-pathophysiology-revisited
#11
REVIEW
M T Fernandez Figueras
The precursor of most cutaneous invasive squamous cell carcinomas (iSCCs) is intraepithelial UV-induced damage, known as field cancerization, which can eventually transform into actinic keratosis (AK). Although AK is the most common precursor of iSCC, many AKs will either persist in the same stage or regress, while only a few will progress into iSCC. Nevertheless, because the progression of individual AKs cannot be predicted, it has been proposed that all AKs, regardless of the grade, should be carefully monitored and appropriately treated in clinical practice...
March 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28263018/treatment-considerations-in-actinic-keratosis
#12
REVIEW
G Goldenberg
The chronic skin condition actinic keratosis (AK) is characterized by the formation of keratotic lesions of variable thickness that are poorly delimited. AK occurs on areas of the skin that have had long-term exposure to the sun or UV radiation. Although AKs may regress, they usually persist and can progress to squamous cell carcinoma (SCC). Clinicians are unable to predict which AKs will progress; therefore, both clinically visible lesions and subclinical, non-visible (i.e. the entire area affected by AK/field cancerization) should be treated...
March 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28257944/a-quantitative-study-of-in-vivo-protoporphyrin-ix-fluorescence-build-up-during-occlusive-treatment-phases
#13
C Louise Campbell, C Tom A Brown, Kenneth Wood, Ana Gabriela Salvio, Natalia M Inada, Vanderlei S Bagnato, Harry Moseley
BACKGROUND: Topical photodynamic therapy (PDT) is a non-invasive light based therapy used to treat non-melanoma skin cancer (NMSC) and dysplasia. During PDT, the light sensitive molecule protoporphyrin IX (PpIX) is activated, resulting in the production of singlet oxygen, which subsequently leads to cell death. PpIX is metabolised from a topically applied pro-drug and the strong fluorescence signal associated with PpIX can be utilised as an indicator of the amount of PpIX present within the tumour tissue...
February 28, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28222225/daylight-photodynamic-therapy-vs-conventional-photodynamic-therapy-as-skin-cancer-preventive-treatment-in-patients-with-face-and-scalp-cancerization-an-intra-individual-comparison-study
#14
Elena Sotiriou, Demetrios Ioannides, Fotini Vrani, Elizabeth Lazaridou, Efstratios Vakirlis, Aimilios Lallas, Zoe Apalla
BACKGROUND: Individuals with medical history of non-melanoma skin cancers (NMSCs) usually develop multiple and/or recurrent malignant lesions around the site of the primary neoplasm. The latter represents the clinical expression of the "field cancerization" theory; supporting the presence of multiple malignant clones of dysplastic keratinocytes over the entire epithelium that potentially can progress into clinical lesions. Taking into consideration that the burden of NMSCs on public health and health-care cost is high, adequate control of recurrences and management of field change is challenging...
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28177777/high-concentration-calcitriol-induces-endoplasmic-reticulum-stress-related-gene-profile-in-breast-cancer-cells
#15
Ali Burak Ozkaya, Handan Ak, Hikmet Hakan Aydin
Calcitriol, the active form of vitamin D, is known for its anti-cancer properties including induction of apoptosis, inhibition of angiogenesis and metastasis. Understanding the mechanism of action for calcitriol will help development of novel treatment strategies. Since vitamin D exerts its cellular actions via binding to its receptor and by altering expressions of a set of genes, we aimed to evaluate the effect of calcitriol on transcriptomic profile of breast cancer cells. We previously demonstrated that calcitriol alters ER stress markers, therefore in this study we have focused on ER-stress related genes to reveal calcitriols action on these genes in particular...
June 29, 2016: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28167201/efficacy-of-iontophoresis-assisted-ablative-fractional-laser-photodynamic-therapy-with-short-incubation-time-for-the-treatment-of-actinic-keratosis-12-month-follow-up-results-of-a-prospective-randomised-comparative-trial
#16
Seung-Hwan Choi, Tae-Hoon Kim, Ki-Hoon Song
BACKGROUND: Iontophoresis is a transdermal drug-delivery technique that enhances the transport of ionic species across membranes and may have significant benefit for the treatment of actinic keratosis (AK) by ablative fractional laser-primed photodynamic therapy (AFL-PDT). The aim of this study were to compare the efficacy, recurrence rate, cosmetic outcome and safety of iontophoresis-assisted AFL-PDT with 2hours of incubation vs. those of conventional AFL-PDT with 2- and 3-hour incubation in patients with facial and scalp AK...
February 3, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28124962/-investigation-of-the-in-vitro-effects-of-melissa-officinalis-l-mentha-x-piperita-l-and-ocimum-basilicum-l-lamiaceae-essential-oils-on-the-cysts-and-trophozoites-of-acanthamoeba-castellani
#17
Ceren Ergüden, Soykan Özkoç, Bintuğ Öztürk, Songül Bayram Delibaş
Acanthamoeba species are free living amoeba found widely all over the world. They are responsible for Acanthamoeba keratitis (AK), an infection which is especially seen in contact lens users and after minor corneal traumas, that may lead blindness. At present, antifungals and antiseptics are used for the treatment of AK cases, however, some problems such as long treatment periods and the occurrence of side effects, resistance of cyst forms against drugs, emphasize the need for new drugs. There are some published studies that pointed out the effectiveness of plant extracts and essential oils on Acanthamoeba spp...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28118830/the-economic-burden-of-hiv-aids-on-individuals-and-households-in-nepal-a-quantitative-study
#18
Ak Narayan Poudel, David Newlands, Padam Simkhada
BACKGROUND: There have been only limited studies assessing the economic burden of HIV/AIDS in terms of direct costs, and there has been no published study related to productivity costs in Nepal. Therefore, this study explores in detail the economic burden of HIV/AIDS, including direct costs and productivity costs. This paper focuses on the direct costs of seeking treatment, productivity costs, and related factors affecting direct costs, and productivity costs. METHODS: This study was a cross-sectional, quantitative study...
January 24, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28116535/investigation-of-photobiomodulation-potentiality-by-635-and-809%C3%A2-nm-lasers-on-human-osteoblasts
#19
Gamze Bölükbaşı Ateş, Ayşe Ak Can, Murat Gülsoy
Photobiomodulation (PBM) describes light-induced photochemical reactions achieved by the application of red or near infrared lasers/LED light with low energy densities. This noninvasive and painless method has been used in some clinical areas but controversial outcomes demand a skeptical look for its promising and potential effects. In this detailed in vitro study, the osteoblast cells were irradiated with 635 and 809 nm diode lasers at energy densities of 0.5, 1, and 2 J/cm(2). Cell viability, proliferation, bone formation, and osteoblast differentiation were evaluated by methylthiazole tetrazolium (MTT) assay, Alamar Blue assay, acridine orange/propidium iodide staining, alkaline phosphatase (ALP) activity, Alizarin red staining, and reverse-transcription polymerase chain reaction (RT-PCR) to test the expression of collagen type I, ALPL, and osteocalcin...
April 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28114674/influence-of-information-framing-on-patient-decisions-to-treat-actinic-keratosis
#20
Katherine Berry, Melissa Butt, Joslyn S Kirby
Importance: Actinic keratosis (AK) is a skin growth induced by UV light exposure that requires long-term management because a small proportion of the disease can progress to squamous cell carcinoma. The influence of how clinicians frame or present information to patients may affect decision making about AK. Objective: To evaluate the differences in patients' decisions on whether to receive treatment for AK related to information presentation or choice framing. Design, Setting, and Participants: A prospective survey study was performed from June 1 to July 31, 2016, in participants who were able to read English...
January 18, 2017: JAMA Dermatology
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