Jet-injection assisted photodynamic therapy for superficial and nodular basal cell carcinoma: A pilot study.

Background: Photodynamic therapy (PDT) with topical δ-Aminolevulinic acid (ALA) has efficacy in treating basal cell carcinoma (BCC) but is limited by incomplete penetration of ALA into the deeper dermis. This prospective open-label pilot trial investigated the safety and efficacy of photosensitizer jet injection for PDT (JI-PDT) for BCC treatment. It was performed with 15 patients (n = 15) with histologically confirmed, untreated, low-risk nodular BCCs at a single institution.

A one-time pneumatic jet-injection of 5-fluorouracil and triamcinolone acetonide for treatment of hypertrophic scars-A blinded randomized controlled trial.

Background: Patients with hypertrophic scars (HTS) risk reduced quality of life due to itching, pain, poor cosmesis, and restriction of movement. Despite good clinical efficacy, patients are often reluctant to undergo repeated needle injections due to pain or needle phobia.

Objectives: To evaluate the applicability of needle-free pneumatic jet injection (PJI) and assess changes in hypertrophic scars following a single PJI treatment with 5-fluorouracil (5-FU) and triamcinolone acetonide (TAC).

Treatment of Extramammary Paget Disease and the Role of Reflectance Confocal Microscopy: A Prospective Study.

Background: Extramammary Paget disease (EMPD) poses treatment challenges. Invasive and noninvasive treatment modalities exist with variable success reported. Reflectance confocal microscopy (RCM) is emerging as an adjuvant diagnostic tool.

Ablative fractional laser-assisted treatments for keratinocyte carcinomas and its precursors-Clinical review and future perspectives.

Keratinocyte carcinomas (KC) are the most common malignant human neoplasms. Although surgery and destructive approaches are first-line treatments, topical therapies are commonly used. Due to limited uptake of topical agents across the skin barrier, clearance rates are often sub-optimal.

Needle-Free Injection Assisted Drug Delivery-Histological Characterization of Cutaneous Deposition.

Background And Objectives: Many cutaneous drug-delivery techniques rely on passive diffusion to deliver topical compounds to the skin. When attempting to deliver drugs to thicker lesions, such as skin tumors, modalities that do not rely on diffusion may serve as a better drug-delivery method. In this histological study, we aim to investigate the cutaneous delivery patterns of an electronic pneumatic needle-free injection device.

Opportunities for laser-assisted drug delivery in the treatment of cutaneous disorders.

Fractional laser-assisted drug delivery (LADD) is increasingly finding its way into clinical practice as a new means to enhance topical drug uptake and improve treatment of cutaneous disorders. To date, LADD has been used for a wide range of conditions, including photodamaged skin, neoplastic lesions, scars, cutaneous infections, and vitiligo as well as for topical anesthetic and aesthetic procedures. Substantiated by randomized controlled clinical trials, strong evidence is available for LADD's usefulness for photodynamic therapy (PDT), for which improved efficacy using laser-assisted photosensitizer treatment is established for actinic keratosis compared with conventional PDT.

Exploring the use of ingenol mebutate to prevent non-melanoma skin cancer.

Non-melanoma skin cancer is the most frequently occurring cancer in Caucasians today. Incidence rates in Europe have increased steadily since the 1960s and more than tripled over the last 50 years. Despite primary preventative efforts, incidences of non-melanoma skin cancer continue to rise and development of effective chemopreventative strategies is needed.

Repeated Treatments with Ingenol Mebutate Prevents Progression of UV-Induced Photodamage in Hairless Mice.

Background And Aim: Ingenol mebutate (IngMeb) is an effective treatment for actinic keratosis. In this study, we hypothesized that repeated treatments with IngMeb may prevent progression of UV-induced photodamage, and that concurrent application of a corticosteroid may reduce IngMeb-induced local skin responses (LSR).

Methods: Hairless mice (n = 60; 3 groups of 20 mice) were irradiated with solar simulated ultraviolet radiation (UVR) throughout the study.

Repeated treatments with ingenol mebutate for prophylaxis of UV-induced squamous cell carcinoma in hairless mice.

Background And Aim: The incidence of squamous cell carcinomas (SCC) is increasing, and effective chemopreventative strategies are needed. We hypothesized that repeated treatments with ingenol mebutate (IngMeb) would postpone development of SCC in hairless mice, and that application of a corticosteroid would reduce IngMeb-induced local skin responses (LSRs) without affecting tumor postponement.

Methods: Hairless mice (n=150; 6 groups á 25 mice) were irradiated with solar simulated ultraviolet radiation (UVR) until SCC developed.

Side effects from intense pulsed light: Importance of skin pigmentation, fluence level and ultraviolet radiation-A randomized controlled trial.

Background And Objective: Intense pulsed light (IPL) is a mainstream treatment for hair removal. Side effects after IPL are known, but risk factors remain to be investigated. The objective of this study was to assess the contribution of skin pigmentation, fluence level, and ultraviolet radiation (UVR) on IPL-induced side effects.

A randomized side-by-side study comparing alexandrite laser at different pulse durations for port wine stains.

Background And Objectives: Pulsed dye laser (PDL) represents the gold-standard treatment for port wine stains (PWS). However, approximately 20% of patients are poor responders and yield unsatisfactory end-results. The Alexandrite (Alex) laser may be a therapeutic alternative for selected PWS subgroups, but optimal laser parameters are not known.

Translational medicine in the field of ablative fractional laser (AFXL)-assisted drug delivery: A critical review from basics to current clinical status.

Background: Ablative fractional lasers enhance uptake of topical therapeutics and the concept of fractional laser-assisted drug delivery has now been taken into clinical practice.

Objectives: We systematically reviewed preclinical data and clinical evidence for fractional lasers to enhance drug uptake and improve clinical efficacy.

Methods: We searched PubMed and Embase databases; 34 articles met the inclusion criteria.

Topical corticosteroid has no influence on inflammation or efficacy after ingenol mebutate treatment of grade I to III actinic keratoses (AK): A randomized clinical trial.

Background: Ingenol mebutate (IngMeb) is approved for treatment of actinic keratoses (AK) and may cause unpredictable local skin responses (LSR).

Objectives: We sought to investigate whether IngMeb-induced LSR, pain, and pruritus could be alleviated with a topical glucocorticoid and, further, to assess efficacy, cosmetic outcome, and patient satisfaction in patients with severe photodamage.

Methods: In this blinded, randomized controlled clinical trial, patients with multiple AK and field cancerization of the face or scalp were treated in 2 areas with IngMeb (0.

Ultraviolet radiation after exposure to a low-fluence IPL home-use device: a randomized clinical trial.

The prevailing advice is to avoid sun exposure after intense pulsed light (IPL) hair removal. However, no systematic evaluation of ultraviolet radiation (UVR) after IPL hair removal exits. Therefore, we investigated the occurrence of side effects in subjects receiving solar-simulated UVR after a low-fluence IPL treatment with a home-use device.

Fractional laser-assisted drug delivery: Active filling of laser channels with pressure and vacuum alteration.

Background And Objective: Ablative fractional laser (AFXL) is rapidly evolving as one of the foremost techniques for cutaneous drug delivery. While AFXL has effectively improved topical drug-induced clearance rates of actinic keratosis, treatment of basal cell carcinomas (BCCs) has been challenging, potentially due to insufficient drug uptake in deeper skin layers. This study sought to investigate a standardized method to actively fill laser-generated channels by altering pressure, vacuum, and pressure (PVP), enquiring its effect on (i) relative filling of individual laser channels; (ii) cutaneous deposition and delivery kinetics; (iii) biodistribution and diffusion pattern, estimated by mathematical simulation.

Actinic keratosis: a cross-sectional study of disease characteristics and treatment patterns in Danish dermatology clinics.

Objectives: The incidence of actinic keratosis (AK) is increasing, and several treatment options are available. The aim of this study was to describe clinical characteristics and treatment patterns in patients with AK treated by Danish dermatologists.

Methods: A multicenter, non-interventional, cross-sectional study was conducted.

Fractional ablative erbium YAG laser: histological characterization of relationships between laser settings and micropore dimensions.

Background And Objectives: Treatment of a variety of skin disorders with ablative fractional lasers (AFXL) is driving the development of portable AFXLs. This study measures micropore dimensions produced by a small 2,940 nm AFXL using a variety of stacked pulses, and determines a model correlating laser parameters with tissue effects.

Materials And Methods: Ex vivo pig skin was exposed to a miniaturized 2,940 nm AFXL, spot size 225 µm, density 5%, power levels 1.