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Actinic keratosis

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https://www.readbyqxmd.com/read/28628679/safety-and-efficacy-of-escalating-doses-of-ingenol-mebutate-for-field-treatment-of-actinic-keratosis-on-the-full-face-full-balding-scalp-or-chest
#1
C William Hanke, Brian Berman, Neil Swanson, David M Pariser, Jonathan S Weiss, Michael Bukhalo, Torsten Skov, John Villumsen, Daniel Siegel
<p>Background: Actinic keratosis (AK) can affect large skin areas. Ingenol mebutate (IngMeb) gel (0.015% and 0.05%) is approved for topical treatment of AK in a single contiguous area of ~25 cm2.</p> <p>Objective: The study sought to determine the maximum tolerated dose (MTD), efficacy, and tolerability of IngMeb applied to AK on a contiguous area less than equal to 250 cm2.</p> <p>Methods: Part 1 determined the MTD of IngMeb at 7 concentrations for 2 or 3 days. Part 2 assessed efficacy and tolerability at the MTD and one dose lower for 2 or 3 days vs vehicle...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28628678/assessment-of-efficacy-and-irritation-of-ingenol-mebutate-gel-0-015-used-with-or-without-dimethicone-lotion-for-treatment-of-actinic-keratosis-on-the-face
#2
Shelbi C Jim On, Peter W Hashim, John K Nia, Mark G Lebwohl
<p>Background: Ingenol mebutate gel 0.015% provides high clearance rates for actinic keratosis (AK) on the face and scalp but causes transient local skin responses (LSRs).</p> <p>Objective: This study sought to determine whether the application of 1% dimethicone would decrease ingenol mebutate-associated LSRs and/or affect efficacy during the treatment of multiple AKs on the face.</p> <p>Methods: Ingenol mebutate gel 0.015% was applied for 3 days to two 25 cm2 areas, each containing 3 to 8 AKs on the face of each subject, followed by application of 1% dimethicone lotion in an investigator-blinded manner to one randomly selected AK-containing area until LSRs were no longer present...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28595997/hpv8-field-cancerization-in-a-transgenic-mouse-model-is-due-to-lrig1-keratinocyte-stem-cell-expansion
#3
Simone Lanfredini, Carlotta Olivero, Cinzia Borgogna, Federica Calati, Kathryn Powell, Kelli-Jo Davies, Marco De Andrea, Sarah Harries, Hiu Kwan Carolyn Tang, Herbert Pfister, Marisa Gariglio, Girish K Patel
β-HPV cause near ubiquitous latent skin infection within long-lived hair follicle keratinocyte stem cells (HF KSC). In patients with epidermodysplasia verruciformis (EV), β-HPV viral replication is associated with skin keratosis and cutaneous squamous cell carcinoma (SCC). To determine the role of HF KSC in β-HPV induced skin carcinogenesis, we utilized a transgenic mouse model in which the keratin 14 promoter drives expression of the entire HPV8 early region (HPV8tg). HPV8tg mice developed thicker skin in comparison to wild type littermates consistent with a hyperproliferative epidermis...
June 5, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28581227/field-treatment-of-actinic-keratosis-on-the-scalp
#4
C Bower
No abstract text is available yet for this article.
June 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28563677/forearm-skin-aging-characterization-by-instrumental-measurements
#5
Prs Carvalho, J M Sumita, J L M Soares, Sanudo A, Bagatin E
The intrinsic aging and photoaged skin presents biomechanical and morphological differences, which are reflected in the appearance of roughness, superficial and deep wrinkles, atrophy, reduced elasticity, hypo and hyperpigmentation and actinic keratosis OBJECTIVE: To evaluate and compare the characteristics of the flexor (with a predominance of intrinsic aging) and extensor (chronically exposed to sunlight and other environmental factors, with a predominance of photoaging) skin surfaces of the forearms METHODS: Interventional, prospective, diagnostic study, including 23 females, aged over 60 years...
May 31, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28562437/use-of-skin-biopsies-among-dermatologists
#6
David A Weinstein, Sasank Konda, Brett M Coldiron
BACKGROUND: Skin biopsies are essential to establish a diagnosis in many skin diseases. Utilization has been increasing rapidly and represents a significant health care cost. There are no benchmarks or baselines to guide the practice of skin biopsies. OBJECTIVE: To create a reference data set of biopsy behavior among dermatologists. METHODS: Five hundred eighty-eight dermatologists belonging to the American Dermatological Association (ADA) were surveyed...
May 25, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28562195/mhealth-app-for-risk-assessment-of-pigmented-and-nonpigmented-skin-lesions-a-study-on-sensitivity-and-specificity-in-detecting-malignancy
#7
Monique Thissen, Andreea Udrea, Michelle Hacking, Tanja von Braunmuehl, Thomas Ruzicka
BACKGROUND: With the advent of smartphone devices, an increasing number of mHealth applications that target melanoma identification have been developed, but none addresses the general context of melanoma and nonmelanoma skin cancer identification. INTRODUCTION: In this study a smartphone application using fractal and classical image analysis for the risk assessment of skin lesions is systematically evaluated to determine its sensitivity and specificity in the diagnosis of melanoma and nonmelanoma skin cancer along with actinic keratosis and Bowen's disease...
May 31, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28556349/actinic-keratosis-or-maybe-not
#8
D M Caruana, J Millar, C May, D Bilsland
No abstract text is available yet for this article.
May 29, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28553130/patient-satisfaction-and-reported-outcomes-on-the-management-of-actinic-keratosis
#9
REVIEW
Raveena Khanna, Anshika Bakshi, Yasmin Amir, Gary Goldenberg
Actinic keratosis (AK) is a common dermatologic condition in which hyperplastic epidermal lesions develop in response to excessive and chronic exposure to ultraviolet (UV) radiation. If left untreated, AK can progress to squamous cell carcinomas of the skin. Incidence is rising worldwide as a result of the progressive aging of populations and an increase in lifetime cumulative exposure to UV radiation. Currently, various treatment options exist, which range from topical medications to light-based therapies and procedural modalities...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28543586/multiple-skin-cancers-in-patients-with-mycosis-fungoides-after-long-term-ultraviolet-phototherapy
#10
K Imafuku, H Hata, T Yanagi, S Kitamura, Y Inamura-Takashima, M Nishimura, S Kitamura, S Moriwaki, H Shimizu
Phototherapy is a useful noninvasive therapy, but it can induce cutaneous malignant tumours, including squamous cell carcinoma (SCC) and basal cell carcinoma (BCC). We report on a 79-year-old man who had long-standing mycosis fungoides for 40 years, which had been treated with psoralen ultraviolet A therapy for 37 years at a dose of approximately 5000 J/cm(2) . Approximately 6 years before presentation, numerous types of cutaneous malignancies, including actinic keratosis, BCC and SCC, had begun to develop all over the patient's body...
July 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28543532/intraepidermal-merkel-cell-carcinoma-a-case-series-of-a-rare-entity-with-clinical-follow-up
#11
George Jour, Phyu P Aung, Eduardo Rozas-Muñoz, Johnathan L Curry, Victor Prieto, Doina Ivan
BACKGROUND: Merkel cell carcinoma (MCC) is a rare but aggressive cutaneous carcinoma. MCC involves typically dermis and although epidermotropism has been reported, MCC strictly intraepidermal or in situ (MCCIS) is exceedingly rare. Most of the cases of MCCIS described so far have associated other lesions, such as squamous or basal cell carcinoma, actinic keratosis, etc. Herein, we describe three patients with MCC strictly in situ, without a dermal component. METHODS: Our patients were elderly, two of the lesions involved the head and neck area and one was on a finger...
May 23, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28538027/dermatoscopic-patterns-of-nonfacial-actinic-keratosis-characterization-of-pigmented-and-nonpigmented-lesions
#12
Clarissa P H Reinehr, Gabriela C Garbin, Renato M Bakos
BACKGROUND: Actinic keratoses (AKs) are dysplastic proliferations of keratinocytes. Studies evaluating nonfacial dermatoscopic pattern of AKs are scarce. OBJECTIVE: This study aimed to evaluate the dermatoscopic patterns of AKs located in nonfacial sites and to compare their patterns with facial lesions. MATERIALS AND METHODS: Patients with concomitant facial and nonfacial AKs were recruited to participate and evaluated by clinical and dermatoscopic images of their AKs...
May 22, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28536731/a-novel-actinic-keratosis-field-assessment-scale-for-grading-actinic-keratosis-disease-severity
#13
Brigitte Dréno, Rino Cerio, Thomas Dirschka, Ignasi Figueras Nart, John T Lear, Ketty Peris, Andrés Ruiz de Casas, Kaleci Shaniko, Giovanni Pellacani
Actinic keratosis (AK) lesions are surrounded by field cancerization (areas of subclinical, non-visible sun damage). Existing AK grading tools rely on AK counts, which are not reproducible. An Actinic Keratosis Field Assessment Scale (AK-FAS) for grading the severity of AK/field was developed. Standardized photographs of patients representing the full range of AK severity were collected. Six investigators independently rated each photograph according to 3 criteria: AK area (total skin area affected by AK lesions), hyperkeratosis and sun damage...
May 24, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28532759/5-fluorouracil-for-actinic-keratosis-treatment-and-chemoprevention-a-randomized-controlled-trial
#14
Joanna L Walker, Julia A Siegel, Moniyka Sachar, Hyemin Pomerantz, Suephy C Chen, Susan M Swetter, Robert P Dellavalle, George P Stricklin, Abrar A Qureshi, John J DiGiovanna, Martin A Weinstock
No abstract text is available yet for this article.
June 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28526809/tumor-cell-specific-aim2-regulates-growth-and-invasion-of-cutaneous-squamous-cell-carcinoma
#15
Mehdi Farshchian, Liisa Nissinen, Elina Siljamäki, Pilvi Riihilä, Minna Piipponen, Atte Kivisaari, Markku Kallajoki, Reidar Grénman, Juha Peltonen, Sirkku Peltonen, Koen D Quint, Jan Nico Bouwes Bavinck, Veli-Matti Kähäri
Cutaneous squamous cell carcinoma (cSCC) is the most common metastatic skin cancer. Inflammation is a typical feature in cSCC progression. Analysis of the expression of inflammasome components in cSCC cell lines and normal human epidermal keratinocytes revealed upregulation of the expression of AIM2 mRNA and protein in cSCC cells. Elevated levels of AIM2 mRNA were noted in cSCCs in vivo compared with normal skin. Strong and moderate tumor cell specific expression of AIM2 was detected with immunohistochemistry (IHC) in sporadic human cSCCs in vivo, whereas expression of AIM2 was moderate in cSCC in situ (cSCCIS) and low or absent in actinic keratosis (AK) and normal skin...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28524709/pharmacokinetics-of-ingenol-mebutate-gel-under-maximum-use-conditions-in-large-treatment-areas
#16
Alicia D Bucko, Michael Jarratt, Dowling B Stough, Laerke Kyhl, John Villumsen, Anders Hall
PURPOSE: Actinic keratoses (AKs) exist on a continuum with squamous cell carcinoma and can occur as sub-clinical and clinically visible lesions in cancerized fields on sun-damaged skin. Ingenol mebutate effectively treats AKs on areas up to 25 cm(2), but actinic keratosis can affect larger areas of skin. This trial evaluated systemic exposure and safety of ingenol mebutate gel on larger areas of skin under maximum use conditions. METHODS: Phase I, multicenter, open-label, uncontrolled, non-randomized trial...
May 25, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28510496/comparison-of-the-treatment-guidelines-for-actinic-keratosis-a-critical-appraisal-and-review
#17
Patrick Fleming, Stephanie Zhou, Robert Bobotsis, Charles Lynde
There are currently several reputable guidelines on the treatment of actinic keratosis (AK) from groups in Canada, the United Kingdom, and Europe. These recommendations, based on evidence or expert consensus, offer clinicians a variety of treatment options for the different clinical presentations of AKs. Although the guidelines are similar in some regards, variations exist in treatment options, duration, and strength of recommendation. Some guidelines also lack input on specific therapies and certain types of AK, such as hypertrophic or thin presentations...
May 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28504403/long-methylaminolaevulinate-application-does-not-increase-clinical-efficacy-of-photodynamic-therapy-in-actinic-keratosis-but-leads-to-collateral-damage
#18
L R Braathen
No abstract text is available yet for this article.
May 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28502083/in-vivo-microvascular-imaging-of-cutaneous-actinic-keratosis-bowen-s-disease-and-squamous-cell-carcinoma-using-dynamic-optical-coherence-tomography
#19
L Themstrup, G Pellacani, J Welzel, J Holmes, G B E Jemec, M Ulrich
BACKGROUND: A clear distinction between actinic keratosis (AK), Bowen's disease (BD) and squamous cell carcinoma (SCC) cannot reliably be made by clinical and dermoscopic evaluation alone. Dynamic optical coherence tomography (D-OCT) is a novel angiographic variant of OCT that allows for non-invasive, in vivo evaluation of the cutaneous microvascular morphology. OBJECTIVE: To investigate the microvascular structures of AK, BD and invasive SCC using D-OCT in order to gain insights into the microvascular morphology of lesions in the spectrum of keratinocyte skin cancers...
May 14, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28489298/a-randomized-double-blind-placebo-controlled-clinical-trial-evaluating-the-role-of-systemic-antihistamine-therapy-for-the-reduction-of-adverse-effects-associated-with-topical-5-aminolevulinic-acid-photodynamic-therapy
#20
Monique J Vanaman Wilson, Isabela T Jones, Douglas C Wu, Mitchel P Goldman
BACKGROUND AND OBJECTIVE: Following photodynamic therapy with 5-aminolevulinic acid (ALA-PDT), patients experience inflammation that may be partially attributable to H1 histamine receptor activation. The objective of this study was to evaluate the impact of antihistamines upon adverse effects following ALA-PDT. STUDY DESIGN/MATERIALS AND METHODS: This was a randomized, placebo-controlled clinical trial conducted at a single study site. Twenty subjects with facial actinic keratoses were randomized to ALA-PDT plus cetirizine 10 mg (n = 10) versus placebo daily (n = 10) from 3 days pre-treatment to 3 days post-treatment for a total of 7 days...
May 10, 2017: Lasers in Surgery and Medicine
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