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Experimental Dermatology

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https://www.readbyqxmd.com/read/27897325/the-biomarker-landscape-in-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#1
REVIEW
Brittany Dulmage, Larisa Geskin, Joan Guitart, Oleg E Akilov
The practice of preemptive individualized medicine is predicated on the discovery, development, and application of biomarkers in specific clinical settings. Mycosis fungoides and Sézary syndrome are the two most common type of cutaneous T-cell lymphoma, yet diagnosis, prognosis, and disease monitoring remain a challenge. In this review, we discuss the current state of biomarker discovery in mycosis fungoides and Sézary syndrome, highlighting the most promising molecules in different compartments. Further, we emphasize the need for continued multicenter efforts to validate available and new biomarkers and to develop prospective combinatorial panels of already discovered molecules...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27897321/polyinosinic-polycytidylic-acid-poly-i-c-attenuates-imiquimod-induced-skin-inflammation-in-mice-by-increasing-cutaneous-pd-l1-expression
#2
LETTER
Kyung-Ah Cho, Ji-Yon Kim, Minhwa Park, Kyung Ho Lee, So-Youn Woo
While the keratinocyte isivation in controlling skin inflammation. This article is protected by copyright. All rights reserved.
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892653/low-baseline-levels-of-nk-cells-may-predict-a-positive-response-to-ipilimumab-in-melanoma-therapy
#3
Julia K Tietze, Daniela Angelova, Markus V Heppt, Thomas Ruzicka, Carola Berking
The introduction of immune checkpoint blockade (ICB) has been a breakthrough in the therapy of metastatic melanoma. The influence of ICB on T cell populations has been studied extensively but little is known about the effect on NK cells. In this study, we analysed the relative and absolute amounts of NK cells and of the subpopulations of CD56(dim) and CD56(bright) NK cells among the peripheral blood mononuclear cells (PBMCs) of 32 patients with metastatic melanoma before and under treatment with ipilimumab or pembrolizumab by flow cytometry...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892645/endothelial-cell-derived-endothelin-1-is-involved-in-abnormal-scar-formation-by-dermal-fibroblasts-through-rhoa-rho-kinase-pathway
#4
Koichiro Kiya, Tateki Kubo, Kenichiro Kawai, Shinsuke Matsuzaki, Rieko Muramatsu, Daisuke Maeda, Toshihiro Fujiwara, Akimitsu Nishibayashi, Shigeyuki Kanazawa, Kenji Yano, Genki Amano, Taiichi Katayama, Ko Hosokawa
Hypertrophic scars and keloids are characterized by excessive dermal deposition of extracellular matrix due to fibroblast-to-myofibroblast differentiation. Endothelin-1 (ET-1) is primarily produced by vascular endothelial cells, and plays multiple roles in the wound-healing response and organ fibrogenesis. In this study, we investigated the pathophysiological significance of ET-1 and involvement of RhoA, a member of the Rho GTPases, in hypertrophic scar/keloid formation. We found that ET-1 expression on dermal microvascular endothelial cells (ECs) in hypertrophic scars and keloids was higher than that in normal skin and mature scars...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892633/dihydroavenanthramide-d-inhibits-mast-cell-degranulation-and-exhibits-anti-inflammatory-effects-through-the-activation-of-neurokinin-1-receptor
#5
Tobias Lotts, Konstantin Agelopoulos, Ngoc Quan Phan, Karin Loser, Gerhard Schmaus, Thomas A Luger, Sonja Ständer
Chronic pruritus is difficult to treat. Current treatment options are frequently ineffective and new therapeutic approaches are urgently needed. Avenanthramides are active substances in oats that exhibit anti-inflammatory effects. Their potential to interrupt pruritus mechanisms was investigated in this study. It was found that the synthetic analog dihydroavenanthramide D (DHAvD) can interact with the neurokinin-1 receptor (NK1R) and inhibit mast cell degranulation. DHAvD also affects inflammatory processes and reduces secretion of the cytokine interleukin-6...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892629/identification-of-novel-anti-melanogenic-hexapeptides-via-positional-scanning-of-a-synthetic-peptide-combinatorial-library
#6
LETTER
Jin Kyung Seok, Seok Won Lee, Jaehyuk Choi, Young Mi Kim, Yong Chool Boo
No abstract text is available yet for this article.
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892611/towards-a-bacterial-treatment-for-armpit-malodour
#7
Chris Callewaert, Jo Lambert, Tom Van de Wiele
Axillary malodour is a frustrating condition for many people. It can lead to significant discomforts and various psychological effects. The underarm microbiome generally plays a major role in axillary malodour formation. Not only the bacteria on the armpit epidermis, but especially those living in the sweat glands, sweat pores and hair follicles play a pivotal role in malodour development. In order to treat underarm malodour, this viewpoint paper envisions a bacterial treatment. Replacing the autochthonous malodour causing microbiome with a non-odour causing microbiome, through an armpit bacterial transplantation or direct application of probiotics/non-odour causing bacteria could resolve the condition...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892610/beside-to-bench-jak-inhibitor-ruxolitinib-inhibits-the-expression-of-cytokines-characteristic-of-cutaneous-lupus-erythematosus
#8
Anna Sophie Klaeschen, Dominik Wolf, Peter Brossart, Thomas Bieber, Joerg Wenzel
This study was stimulated by the clinical observation of a rapid response of a chilblain lupus patient to treatment with JAK1/2-kinase inhibitor ruxolitinib. We investigated the in-vivo expression of phospho-JAK2 in CLE skin samples as well as the immunomodulatory in-vitro effect of ruxolitinib in cultured immortalized keratinocytes and in a 3D human epidermis model (epiCS). Our results demonstrate that ruxolitinib significantly decreases the production of CLE-typical cytokines (CXCL10, CXCL9, MxA) and might be a promising drug for future clinical studies in patients with CLE and related autoimmune skin diseases...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892609/bad-air-gets-under-your-skin
#9
Roxanna Koohgoli, Laura Hudson, Khimara Naidoo, Simon Wilkinson, Bhaven Chavan, Mark A Birch-Machin
Air pollution is increasing beyond previous estimates and is viewed as the world's largest environmental health risk factor. Numerous clinical and epidemiological studies have highlighted the adverse effects of environmental pollutants on health. Although there is comparatively less research investigating the cutaneous effects of ambient pollution, there is growing recognition of the adverse effects on skin. In this article we provide an overview of the nature of environmental pollution and highlight the current evidence detailing the effects on cutaneous health...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892608/an-advanced-mouse-model-for-human-skin-wound-healing
#10
Jie Wen, Xiangyong Li, Xue Leng, Xin Xu, Xunwei Wu
Here we report a model for studying wound repair based on skin regenerated from human tissue culture-expanded cells. The reconstituted skin (hRSK) responds to injury similar to that of intact human skin, and its constituent cells contribute to the healing process. As we have demonstrrated that hRSK composed of GFP-labelled cells also heals "normally", we believe this model will be useful in analyzing the wound repair process using genetically modified human cells. This article is protected by copyright. All rights reserved...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892606/svep1-plays-a-crucial-role-in-epidermal-differentiation
#11
L Samuelov, Q Li, R Bochner, N Najor, L Albrecht, N Malchin, T Goldsmith, M Grafi-Cohen, D Vodo, G Fainberg, B Meilik, I Goldberg, E Warshauer, T Rogers, S Edie, A Ishida-Yamamoto, L Burzenski, N Erez, S A Murray, A D Irvine, L Shultz, K Green, J Uitto, E Sprecher, O Sarig
SVEP1 is a recently identified multi-domain cell adhesion protein, homologous to the mouse polydom protein, which has been shown to mediate cell-cell adhesion in an integrin dependent-manner in osteogenic cells. In the present study, we characterized SVEP1 function in the epidermis. SVEP1 was found by qRT-PCR to be ubiquitously expressed in human tissues, including the skin. Confocal microscopy revealed that SVEP1 is normally mostly expressed in the cytoplasm of basal and suprabasal epidermal cells. Down-regulation of SVEP1 expression in primary keratinocytes resulted in decreased expression of major epidermal differentiation markers...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892605/emilin3-an-extracellular-matrix-molecule-with-restricted-distribution-in-skin
#12
Diana Corallo, Alvise Schiavinato, Dario Bizzotto, Martina Milanetto, Marija Guljelmovic, Douglas R Keene, Gerhard Sengle, Paola Braghetta, Paolo Bonaldo
EMILIN3 is an extracellular matrix glycoprotein that displays a dynamic and restricted expression pattern in connective tissues during post-natal life. In this study, we report the characterization of EMILIN3 deposition in the skin. In addition, to unravel the functions of this protein in skin homeostasis, we generated Emilin3 null mice and provide evidence that EMILIN3 is dispensable for hair follicle growth and maintenance throughout adult life. This article is protected by copyright. All rights reserved.
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892604/interleukin-il-6-modulates-transforming-growth-factor-%C3%AE-receptor-i-and-ii-tgf-%C3%AE-ri-and-ii-function-in-epidermal-keratinocytes
#13
Lerin R Luckett-Chastain, Mackenzie L Cottrell, Bethany M Kawar, Michael A Ihnat, Randle M Gallucci
It been shown that IL-6 modulates TGF-β1 expression in fibroblasts, however; what role IL-6 plays concerning TGF-βR expression and function in skin is unknown. Therefore, the aim of this study was to investigate the mechanism by which IL-6 might modulates TGF-β receptors in skin. Skin from WT, IL-6 overexpressing mice, and IL-6 treated keratinocyte cultures were analyzed for TGF-βRI and TGF-βRII expression via histology, PCR, and flow cytometry. Receptor function was assessed by cell migration, bromodeoxyuridine (BrdU) proliferation assays, and Smad7 expression and Smad2/3 phosphorylation...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27892603/bone-marrow-derived-mesenchymal-stem-cells-prevent-alopecia-areata-development-through-the-inhibition-of-nkg2d-expression-a-pilot-study
#14
LETTER
Ji Won Byun, Hyo Jin Kim, Kwangmin Na, Hye Soo Ko, Hee Jin Song, Sun U Song, Myung-Shin Jeon, Gwang Seong Choi
No abstract text is available yet for this article.
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27808431/adf-winter-school-an-exciting-concept-of-the-arbeitsgemeinschaft-dermatologische-forschung-to-connect-young-scientists-and-clinician-scientists-in-dermatology-at-the-top-of-germany
#15
Amir S Yazdi, Meltem Barlin, Katharina Böhm, Fabian Gendrisch, Saeedeh Ghorbanalipoor, Stefanie Häberle, Annamarie Hamel, Svea Hüning, Clemens Hüttner, Irina Iwanova, Theodora Kanaki, Susanne Kimeswenger, Nadine Lohmann, Saira Munir, Sukalp Muzumdar, Manuel Pedro Pereira, Patricia Peking, Kristin Plesser, Adriana Rendon, Maximilian Rentschler, Carolin Schlumprecht, Anna Smorodchenko, Martin Stock, Jessica Tillmanns, Ugur Uslu, Kamran Ghoreschi, Martin Glatz, Stephan Grabbe, Manfred Kunz, Ralf Ludwig, Karin Scharffetter-Kochanek, Karin Loser
No abstract text is available yet for this article.
November 3, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27783443/bnip3-promotes-the-motility-and-migration-of-keratinocyte-under-hypoxia
#16
Junhui Zhang, Dongxia Zhang, Tiantian Yan, Xupin Jiang, Can Zhang, Liping Zhao, Lingfei Li, Di Tang, Qiong Zhang, Jiezhi Jia, Jiaping Zhang, Yuesheng Huang
The migration of keratinocytes from wound margins plays a critical role in the re-epithelialization of skin wounds. Hypoxia occurs immediately after injury and acts as an early stimulus to initiate the healing processes. Although our previous studies have revealed that hypoxia promotes keratinocyte migration, the precise mechanisms involved remain unclear. Here, we found that BNIP3 expression was up-regulated in hypoxic keratinocytes, and BNIP3 silencing suppressed hypoxia-induced cell migration. Additionally, hypoxia activated the FAK pathway through up-regulation of BNIP3, while FAK inhibition attenuated hypoxic keratinocyte migration...
October 26, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27783441/digital-imaging-biomarkers-feed-machine-learning-for-melanoma-screening
#17
Daniel Summer Gareau, Joel Correa da Rosa, Sarah Yagerman, John A Carucci, Nicholas Gulati, Ferran Hueto, Jennifer L DeFazio, Mayte Suárez-Farinas, Ashfaq Marghoob, James G Krueger
We developed an automated approach for generating quantitative image analysis metrics (imaging biomarkers) that are then analyzed with a set of thirteen machine-learning algorithms to generate an overall risk score that is called a Q-score. These methods were applied to a set of 120 "difficult" dermoscopy images of dysplastic nevi and melanomas that were subsequently excised/classified. This approach yielded 98% sensitivity and 36% specificity for melanoma detection, approaching sensitivity/specificity of expert lesion evaluation...
October 26, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27783430/roles-of-micrornas-in-psoriasis-immunological-functions-and-potential-biomarkers
#18
REVIEW
Qing Liu, Dinghong Wu, Ling Han, Jingwen Deng, Li Zhou, Rui He, Chuanjian Lu, Qing-Sheng Mi
MicroRNAs (miRNAs) are small non-coding RNA molecules, which function in RNA silencing and post-transcriptional regulation of gene expression. Psoriasis is an inflammatory skin disease characterized by the dysfunction of keratinocytes, with the immune dysregulation. We reviewed the recent studies on the roles of miRNAs in psoriasis, and showed that miRNAs play key roles in psoriasis, including the regulation of hyperproliferation, cytokine and chemokine production in keratinocyte, as well as mediating immune dysfunction in psoriasis...
October 26, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27762043/tlr4-induced-b7-h1-on-keratinocytes-negatively-regulates-cd4-t-cells-and-cd8-t-cells-responses-in-oral-lichen-planus
#19
Jing Zhang, Ya-Qin Tan, Ming-Hui Wei, Xiao-Jing Ye, Guan-Ying Chen, Rui Lu, Ge-Fei Du, Gang Zhou
Oral lichen planus (OLP) is a T-cell-mediated autoimmune mucocutaneous disease affected by the interactions among the keratinocytes, CD4(+) T cells and CD8(+) T cells. B7-H1 induced by Toll-like receptors (TLRs), can suppress T cell immune reaction, thereby resulting in immune tolerance. However, the role of TLRs-mediated B7-H1 on keratinocytes in the immune response of OLP is still unknown. The present study showed that TLR4 could induce time-coursed B7-H1 expression on oral keratinocytes, and blocking NF-κB or PI3K/mTOR pathway down-regulated B7-H1 transcriptional expression...
October 20, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27761955/are-fingernails-are-a-key-to-unlocking-the-puzzle-of-mammalian-limb-regeneration
#20
Jessica A Lehoczky
Some mammalian digit tips, including those of mice and human children, can regenerate following amputation, whereas mammalian limb regeneration does not occur. One major difference between the digit tip and the rest of the limb is the presence of the nail, which is necessary for this type of regeneration. This couples well with the finding that canonical Wnt signaling and Lgr6, an agonist of Wnt signaling that marks nail stem cells, are necessary for digit tip regeneration. This viewpoint essay discusses the role of the nail in digit tip regeneration, and explores whether nail stem cells and their presumptive niche can be solely accountable for why regeneration is possible in the digit tip, but not the rest of the limb...
October 20, 2016: Experimental Dermatology
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