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Actinic lesions

Shinnosuke Ikemura, Nao Aramaki, Satoshi Fujii, Keisuke Kirita, Shigeki Umemura, Shingo Matsumoto, Kiyotaka Yoh, Seiji Niho, Hironobu Ohmatsu, Takeshi Kuwata, Motohiro Kojima, Atsushi Ochiai, Tomoko Betsuyaku, Masahiro Tsuboi, Koichi Goto, Genichiro Ishii
Metastasis and growth in neoplastic lesions requires the multi-step regulation of microenvironmental factors. We aimed to elucidate the microenvironmental changes in the process of lymphatic metastasis of lung squamous cell carcinoma. We examined the morphological characteristics of 102 cases of Primary Tumor (PT), 50 of intralymphatic tumor (ILT), 51 of lymph node (LN) micrometastasis (LN-Mic; less than 2 mm in size) and 82 of LN macrometastasis (LN-Mac; greater than 10 mm in size). Afterwards we evaluated the expression of nine molecules (EGFR, FGFR2, CD44, ALDH1, Podoplanin, E-cadherin, S100A4, geminin and ezrin) in matched PT, ILT, LN-Mic and LN-Mac from 23 of these cases...
October 20, 2016: Cancer Science
Tzu-Pin Shentu, Ming He, Xiaoli Sun, Jianlin Zhang, Fan Zhang, Brendan Gongol, Traci L Marin, Jiao Zhang, Liang Wen, Yinsheng Wang, Gregory G Geary, Yi Zhu, David A Johnson, John Y-J Shyy
OBJECTIVE: Cortactin translocates to the cell periphery in vascular endothelial cells (ECs) on cortical-actin assembly in response to pulsatile shear stress. Because cortactin has putative sites for AMP-activated protein kinase (AMPK) phosphorylation and sirtuin 1 (SIRT1) deacetylation, we examined the hypothesis that AMPK and SIRT1 coregulate cortactin dynamics in response to shear stress. APPROACH AND RESULTS: Analysis of the ability of AMPK to phosphorylate recombinant cortactin and oligopeptides whose sequences matched AMPK consensus sequences in cortactin pointed to Thr-401 as the site of AMPK phosphorylation...
October 6, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
Johanne Tremblay, Carole G Campion, Thomas Verissimo, Suzanne Cossette, Hiroyuki Matsuda, Pavel Hamet
OBJECTIVE: Epidermal growth factor receptor (EGFR) signaling plays a dual role in hypertension-induced kidney damage. EGFR is critically involved in angiotensin II-induced renal lesions and fibrosis but is also engaged in kidney tissue repair. Consequently, targeting EGFR in renal diseases is complex because even if inhibition of EGFR activity would be beneficial, a minimal EGFR activity is needed to recover from harmful insults. Our group has identified HCaRG (Hypertension-related, Calcium-Regulated Gene) whose expression is increased in kidneys of hypertensive rats and mice...
September 2016: Journal of Hypertension
Jun Hyuk Son, Joon Hyuk Choi, Su-Ho Lim
PURPOSE: To present a rare case of a conjunctival hypertrophic scar presenting as eyelid mass after surgical treatment of a chalazion. CASE PRESENTATION: A 74-year-old man visited our clinic with severe ocular discomfort and excessive lacrimation since several months in his left eye accompanied by itching of the upper eyelid. Examination of the anterior segment revealed a 6 mm (horizontal) × 8 mm (vertical) round, immobile, hard, mushroom-shaped protruding mass on the tarsal conjunctiva of his left eye...
2016: SpringerPlus
Beom Jin Lim, Jae Won Yang, Woo Sung Do, Agnes B Fogo
Focal segmental glomerulosclerosis (FSGS) is characterized by focal and segmental obliteration of glomerular capillary tufts with increased matrix. FSGS is classified as collapsing, tip, cellular, perihilar and not otherwise specified variants according to the location and character of the sclerotic lesion. Primary or idiopathic FSGS is considered to be related to podocyte injury, and the pathogenesis of podocyte injury has been actively investigated. Several circulating factors affecting podocyte permeability barrier have been proposed, but not proven to cause FSGS...
October 16, 2016: Journal of Pathology and Translational Medicine
Lei Chen, Yang Lu, Jun Wen, Xu Wang, Lingling Wu, Di Wu, Xuefeng Sun, Bo Fu, Zhong Yin, Hongli Jiang, Xiangmei Chen
BACKGROUND/AIMS: Individuals possessing a single kidney are at greater risk of renal injury upon exposure to harmful stimuli. This study aimed to explore the pathogenesis of renal injury in glomerulonephritis with versus without unilateral nephrectomy (UNX). METHODS: Histological analysis and label-free quantitative proteomics were performed on two models-the Habu snake venom-induced glomerulonephritis model with versus without UNX (HabuU and Habu models, respectively)...
October 17, 2016: Cellular Physiology and Biochemistry
Kai Li, Yongzhen Liu, Changjun Liu, Li Gao, Yanping Zhang, Yulong Gao, Hongyu Cui, Xiaole Qi, Li Zhong, Xiaomei Wang
The vaccine efficacy of recombinant viruses can be influenced by many factors. Accordingly, the activity of promoters has been one of the major factors affecting the antigen expression and protection rate. In the present study, two recombinant Marek's disease virus type 1 (MDV1) vaccines containing the VP2 gene of infectious bursal disease virus (IBDV) under control of different promoters were generated from overlapping fosmid DNAs. The rMDV-Pec-VP2 virus containing the VP2 gene under control of the Pec promoter (CMV enhancer and chicken β-actin chimera promoter) demonstrated higher VP2 expression and stronger antibody response against IBDV in chickens than the rMDV-CMV-VP2 virus using the CMV promoter...
October 11, 2016: Vaccine
Martina Ulrich, Susanne Lange-Asschenfeldt, Kresten Skak, Torsten Skov, Marie Louise Østerdal, Hans-Joachim Röwert-Huber, John Robert Zibert, Eggert Stockfleth
Ingenol mebutate represents a topical treatment for fields with actinic keratosis (AK). The biological effects of ingenol mebutate in AK, subclinical (SC)-AK, and reference-skin were assessed and graded by in vivo reflectance confocal microscopy (RCM) and histology. Patients with AK and SC-AK lesions in one 25 cm2 field on hands or forearms, and with an area of reference skin on the inner upper arm, were included. The two fields were each treated with ingenol mebutate 0.05% gel (n=16), or vehicle (n=8), on 2 consecutive days; clinical and RCM assessments were performed on days 1, 2, 3, 8, and 57, and biopsies on day 3...
October 1, 2016: Journal of Drugs in Dermatology: JDD
S A Braun, P A Gerber
actinic field cancerization (AFC) is a frequent neoplastic skin disease with a high prevalence in the elderly population. AFC is defined as a condition with at least six actinic keratosis (AKs) in one body region or field of chronically sun-damaged skin.(1) With regard to the management of AFC a superior efficacy has been demonstrated for field-directed treatments, such as 5-fluorouracil, imiquimod, ingenol mebutate or photodynamic therapy (PDT), as compared to lesion-directed measures, such as cryotherapy...
October 12, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
Yuan-Yuan Zhan, Jin-Hui Wang, Xing Tian, Shi-Xiu Feng, Lin Xue, Li-Ping Tian
ETHNOPHARMACOLOGICAL RELEVANCE: Citrullus lanatus ssp. vulgaris var. megalaspermus Lin et Chao, was also known as watermelon belongs to family Cucurbitaceae, variously used as healthy food and in the treatment of liver and lungs problems. Currently, Citrullus lanatus has become a major economic crop of medicinal and edible effects with regional characteristics. AIM: This study was designed to evaluate the hepatoprotective and antioxidant activity of the seed melon (Citrullus lanatus ssp...
October 4, 2016: Journal of Ethnopharmacology
R E Genders, S Beck, J N Bouwes Bavinck, H A M van den Munckhof, S T P Kouwenhoven, M N C de Koning, F R de Gruijl, D Jenkins, R Willemze, K D Quint
BACKGROUND: For selecting therapy it is important to distinguish different types of keratinocytic neoplasia. It is sometimes difficult to make histopathologic diagnosis, especially in organ transplant recipients (OTR) who develop numerous lesions. METHODS: To investigate p16 immunostaining in different types of keratinocytic neoplasia in OTR, we studied 59 actinic keratoses(AK), 51 Bowen' s disease(BD), 63 squamous cell carcinomas(SCC) , 16 benign keratotic lesions(BKL) from 31 OTR patients and 25 controls (eczema and psoriasis)...
October 7, 2016: Journal of Cutaneous Pathology
Radek Wojcik, Julia Lowin, David Vilardell, Silvia Maeso, Leonardo Ruiz, John Lear, Colin Morton
OBJECTIVE: The objective of this analysis was to estimate the relative cost-effectiveness of Actikerall * (5-FU-SA) versus cryotherapy in a secondary care setting in the UK, for lesion-directed treatment in patients with actinic keratoses (AK) of the face and scalp. METHODS: The model was a simple decision tree, with a 6-month time horizon. The perspective was that of the UK National Health Service (NHS). Modelled treatment effects included reported per-patient histological clearance and recurrence rates...
October 7, 2016: Journal of Medical Economics
Toshiyuki Maezawa, Masayuki Tanaka, Miho Kanazashi, Noriaki Maeshige, Hiroyo Kondo, Akihiko Ishihara, Hidemi Fujino
Immobilization induces skeletal muscle fibrosis characterized by increasing collagen synthesis in the perimysium and endomysium. Transforming growth factor-β1 (TGF-β1) is associated with this lesion via promoting differentiation of fibroblasts into myofibroblasts. In addition, reactive oxygen species (ROS) are shown to mediate TGF-β1-induced fibrosis in tissues. These reports suggest the importance of ROS reduction for attenuating skeletal muscle fibrosis. Astaxanthin, a powerful antioxidant, has been shown to reduce ROS production in disused muscle...
October 6, 2016: Journal of Physiological Sciences: JPS
Zainab Jiyad, Peter O'Rourke, H Peter Soyer, Adèle C Green
Actinic keratoses (AKs) are common lesions that are usually diagnosed clinically. We sought to examine the accuracy of AK counts on digital photographs when compared with clinical examination counts. Skin sites of renal transplant recipients were examined clinically and on digital photographs by independent dermatologically-trained examiners. Specificity, sensitivity and Kendall's tau-b correlation coefficient were calculated based on exact photographic AK counts as well as counts with ± 1 AK tolerance...
October 4, 2016: Acta Dermato-venereologica
B K Kleinschmidt-DeMasters, Kevin O Lillehei
Radiation-induced vascular "malformations", designated cavernous hemangiomas/cavernomas ("RICHs"), are seldom biopsied and are usually diagnosed based on neuroimaging features. They are an increasingly recognized complication of both CNS external beam radiation therapy and stereotactic radiosurgery. We identified 13 patients with radiation-induced vascular "malformations" in our surgical neuropathology databases searched from 2000 to 2016; 4 had received their therapy during childhood; 5 had received radiosurgery...
September 30, 2016: Journal of Neuropathology and Experimental Neurology
Martin Ulrich, Iris Zalaudek, J Welzel
Actinic keratosis, Bowen disease, and invasive squamous cell carcinoma represent different steps within the disease continuum of squamous neoplasia. Although these stages of squamous neoplasia share common findings, reflectance confocal microscopy may be applied for their differentiation and distinction from other benign or malignant lesions. Hyperkeratosis represents the most important limitation in the evaluation of squamous neoplasia as it may impair the analysis of deeper epidermal and dermal structures significantly...
October 2016: Dermatologic Clinics
Phoebe Star, Pascale Guitera
Distinguishing lentigo maligna (LM) and lentigo maligna melanoma (LMM) from background pigmented non-melanoma lesions is challenging. The field of solar damage can obscure clinical assessment, and diagnostic ambiguities are created due to the overlap of the clinical features of LM with other benign lesions. Moreover, margin assessment on histology is limited by the resemblance between melanocytic hyperplasia of actinically damaged skin and scattered atypical melanocytes of LM/LMM. Dermoscopy has made a significant contribution but is often not sufficient for diagnosis and margin assessment...
October 2016: Dermatologic Clinics
Gita Faghihi, Azam Elahipoor, Fariba Iraji, Shadi Behfar, Bahareh Abtahi-Naeini
Introduction. Actinic keratoses (AKs), a premalignant skin lesion, are a common lesion in fair skin. Although destructive treatment remains the gold standard for AKs, medical therapies may be preferable due to the comfort and reliability .This study aims to compare the effects of topical 1% colchicine gel and 3% diclofenac sodium gel in AKs. Materials and Methods. In this randomized double-blind study, 70 lesions were selected. Patients were randomized before receiving either 1% colchicine gel or 3% diclofenac sodium cream twice a day for 6 weeks...
2016: Advances in Medicine
Joel Chappell, Jennifer L Harman, Vagheesh M Narasimhan, Haixiang Yu, Kirsty Foote, Benjamin D Simons, Martin R Bennett, Helle F Jorgensen
RATIONALE: Vascular smooth muscle cell (VSMC) accumulation is a hallmark of atherosclerosis and vascular injury. However, fundamental aspects of proliferation and the phenotypic changes within individual VSMCs, which underlie vascular disease remain unresolved. In particular, it is not known if all VSMCs proliferate and display plasticity, or whether individual cells can switch to multiple phenotypes. OBJECTIVE: To assess whether proliferation and plasticity in disease is a general characteristic of VSMCs or a feature of a subset of cells...
September 28, 2016: Circulation Research
Kazuya Shiogama, Takanori Onouchi, Yasuyoshi Mizutani, Kouhei Sakurai, Ken-Ichi Inada, Yutaka Tsutsumi
Neutrophil extracellular traps (NETs) are extracellular fibrillary structures composed of degraded chromatin and granules of neutrophil origin. In fibrinopurulent inflammation such as pneumonia and abscess, deposition of fibrillar eosinophilic material is a common histopathological finding under hematoxylin-eosin staining. Expectedly, not only fibrin fibrils but also NETs consist of the fibrillar material. The aim of the present study is to analyze immunohistochemically how NETs are involved in the inflammatory process...
August 30, 2016: Acta Histochemica et Cytochemica
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