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Journal of Dermatological Science

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https://www.readbyqxmd.com/read/28633806/il-17-for-therapy
#1
REVIEW
Florian C Kurschus, Sonja Moos
The cytokine IL-17 is now a target for an array of therapeutic monoclonal antibodies supposed to treat a variety of inflammatory diseases. The forerunner Secukinumab, an IL-17A neutralizing antibody, is meanwhile approved as first-line treatments for moderate-to-severe plaque psoriasis, and as second-line treatment for psoriatic arthritis and ankylosing spondylitis. Ixekizumab and Brodalumab, both also targeting the IL-17 pathway, were also recently approved by the FDA for plaque psoriasis. Using mice overexpressing IL-17A in a tissue of choice, we showed that the ectopic expression of this cytokine in keratinocytes resulted in a spontaneous and very strong form of psoriasis-like dermatitis...
June 15, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28633807/differential-induction-of-atf3-and-ho-1-in-myeloid-cells-and-keratinocytes-via-dimethylfumarate-or-cyclosporine-a
#2
Stefanie Müller, Nikola Smatlik, Marc Burian, Kamran Ghoreschi, Martin Röcken, Amir S Yazdi
BACKGROUND: Chronic inflammatory skin diseases are characterized by controlled proliferation of keratinocytes. Here, activating transcription factor 3 (ATF3) might play a fundamental role. In these inflammatory diseases, proliferation is controlled and only rarely leads to cancer development which can be supported by an inflammatory microenvironment. ATF3 is a dual function protein as it suppresses pro-inflammatory IL-6 and IL-8, but also acts as a pro-oncogenic factor by the suppression of p53...
June 12, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28629701/a-polymethoxyflavone-mixture-extracted-from-orange-peels-mainly-containing-nobiletin-3-3-4-5-6-7-8-heptamethoxyflavone-and-tangeretin-suppresses-melanogenesis-through-the-acidification-of-cell-organelles-including-melanosomes
#3
Norihiro Yoshizaki, Ron Hashizume, Hitoshi Masaki
BACKGROUND: Skin color is determined by melanin contents and its distribution. Melanin is synthesized in melanosomes of melanocytes, catalyzed by tyrosinase, melanogenic enzymes. Regarding the process of melanin synthesis, melanosomal pH is considered to play an important role, because it has been reported to differ between Caucasian and Black melanocytes. OBJECTIVE: Although polymethoxyflavone (PMF) has many beneficial effects, it has not been reported which PMF suppresses melanogenesis...
June 10, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28623042/corneocyte-lipid-envelope-cle-the-key-structure-for-skin-barrier-function-and-ichthyosis-pathogenesis
#4
REVIEW
Masashi Akiyama
Research on the genetic abnormalities and pathogenetic processes of ichthyoses has progressed remarkably, and many causative genes and molecules have been identified in ichthyoses and ichthyosis syndromes. Most of the genes/molecules causative of ichthyosis are associated with the barrier function of the stratum corneum, and defects in the skin barrier play important roles in the pathogenesis of various ichthyosis phenotypes. It has been elucidated that, of the ichthyosis-causative genes, ABCA12, ALOXE3, ALOX12B, CYP4F22, CERS3, ABHD5, PNPLA1 and ELOVL4 work in the formation of the corneocyte lipid envelope (CLE), a structure that is essential to sound skin barrier function...
June 8, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28610715/specific-activation-of-inhibitory-interneurons-in-the-spinal-dorsal-horn-suppresses-repetitive-scratching-in-mouse-models-of-chronic-itch
#5
LETTER
Kensho Kanehisa, Miho Shiratori-Hayashi, Keisuke Koga, Hidetoshi Tozaki-Saitoh, Yuta Kohro, Kenji Takamori, Makoto Tsuda
No abstract text is available yet for this article.
June 3, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28602508/cyr61-ccn1-induces-ccl20-production-by-keratinocyte-via-activating-p38-and-jnk-ap-1-pathway-in-psoriasis
#6
Huidan Li, Haichuan Li, Rongfen Huo, Pinru Wu, Zhengyu Shen, Hui Xu, Baihua Shen, Ningli Li
BACKGROUND: Psoriasis is a common chronic skin disease characterized by epidermal hyperplasia and inflammation. Cysteine-rich angiogenic inducer 61 (Cyr61/CCN1) has recently been implicated in psoriasis pathogenesis by promoting keratinocyte activation. However, the mechanisms by which CCN1 enhances cutaneous inflammation are not fully understood. OBJECTIVE: In this study, we investigated the role of CCN1 on the expression of CCL20 in human keratinocyte. METHODS AND RESULTS: By double-label immunofluorescence staining, we first identified that the expression of CCN1 colocalized well with CCL20 production in the epidermis of psoriasis skin lesion...
June 1, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28610717/increased-trem-1-expression-in-inflamed-skin-has-no-functional-impact-on-the-pathogenesis-of-cutaneous-disorders
#7
LETTER
Sören Dräger, Kathrin Kalies, Talles B Sidronio, Mareike Witte, Ralf J Ludwig, Katja Bieber
No abstract text is available yet for this article.
May 30, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28610716/skin-inflammation-leads-immunoglobulin-g-aggregation-and-deposition-in-multiple-organs
#8
LETTER
Keiichi Yamanaka, Karin Okada, Takehisa Nakanishi, Kento Mizutani, Yoshiaki Matsushima, Makoto Kondo, Koji Habe, Hitoshi Mizutani, Naohiro Seo
No abstract text is available yet for this article.
May 29, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28592369/preliminary-study-of-histamine-h4-receptor-expressed-on-human-cd4-t-cells-and-its-immunomodulatory-potency-in-the-il-17-pathway-of-psoriasis
#9
Song Hee Han, Min Seok Hur, Min Jung Kim, Bo Mi Kim, Kyoung Woon Kim, Hae Rim Kim, Yong Beom Choe, Kyu Joong Ahn, Yang Won Lee
BACKGROUND: Previous studies have shown the expression of histamine H4 receptor (H4R) on CD4(+) T cells, especially human CD4(+) Th2-polarized T cells. OBJECTIVE: This study aimed to investigate the role of H4R on these effector T cells in psoriasis. METHODS: We enrolled three patients each with active psoriasis, inactive psoriasis, scalp seborrheic dermatitis, and three normal controls, and compared the basal expression of H4R mRNA in their peripheral blood CD4(+) T cells...
May 29, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28587737/overexpression-of-human-leukocyte-antigen-g-and-interleukin-10-in-acral-lentiginous-melanoma
#10
LETTER
M Zúñiga Castillo, N V Pereira, F Guedes, M N Sotto
No abstract text is available yet for this article.
May 29, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28587736/a-combination-of-low-dose-systemic-etretinate-and-topical-calcipotriol-betamethasone-dipropionate-treatment-for-hyperkeratosis-and-itching-in-olmsted-syndrome-associated-with-a-trpv3-mutation
#11
LETTER
Takuya Takeichi, Katsuhiko Tsukamoto, Yusuke Okuno, Daiei Kojima, Michihiro Kono, Yasushi Suga, Masashi Akiyama
No abstract text is available yet for this article.
May 29, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28610718/echinacea-purpurea-derived-alkylamides-exhibit-potent-anti-inflammatory-effects-and-alleviate-clinical-symptoms-of-atopic-eczema
#12
Attila Oláh, Judit Szabó-Papp, Michael Soeberdt, Ulrich Knie, Stephan Dähnhardt-Pfeiffer, Christoph Abels, Tamás Bíró
BACKGROUND: Atopic eczema (AE) is a chronic inflammatory and pruritic skin disease. There is still an unmet need for topical anti-inflammatory and anti-pruritic substances exhibiting an excellent safety profile. The endocannabinoid system is known to regulate various aspects of cutaneous barrier and immune functions, thus targeting it may be a valid approach for alleviating the symptoms of AE. OBJECTIVE: To assess the putative efficacy of Echinacea purpurea-derived alkylamides (Ec...
May 27, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28576417/low-concentrations-of-neutrophil-extracellular-traps-induce-proliferation-in-human-keratinocytes-via-nf-kb-activation
#13
Stelvio Tonello, Manuela Rizzi, Mario Migliario, Vincenzo Rocchetti, Filippo Renò
INTRODUCTION: Granulocytes play a pivotal role in innate immune response, as pathogen invasion activates neutrophils, a subclass of granulocytes, inducing the production of neutrophil extracellular traps (NETs). In this study, it has been evaluated how NETs could affect human keratinocytes (HaCaT cells) behaviour. MATERIALS AND METHODS: HaCaT cells were treated with increasing NETs concentrations (0.01-200ng/ml) and the effect on cell proliferation was evaluated by MTT assay...
May 23, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28551093/cyclooxygenases-mediate-early-induction-of-interleukin-6-expression-by-solar-ultraviolet-irradiation-in-human-skin
#14
LETTER
Peiru Wang, Min Sun, John J Voorhees, Gary J Fisher, Yong Li
No abstract text is available yet for this article.
May 19, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28583303/keap1-knockdown-in-melanocytes-induces-cell-proliferation-and-survival-via-ho-1-associated-%C3%AE-catenin-signaling
#15
Ji Young Kim, Hemin Lee, Eun Jung Lee, Mikyoung Kim, Tae-Gyun Kim, Hyoung-Pyo Kim, Sang Ho Oh
BACKGROUND: Nrf2-Keap1 signaling pathway protects cells against photo-oxidative stress. Yet in recent works, its role in melanogenesis together with cell protection functions against oxidative stress has been gaining interest. However, its effect on melanogenesis still has contradictory results from different studies. OBJECTIVE: The aims of our study were to investigate the effect of Keap1 silencing in melanocyte on melanogenesis and its associated mechanism. METHODS: Primary human epidermal melanocytes and melan-a cell line were used for this experiment...
May 18, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28571749/altered-expression-of-epidermal-lipid-bio-synthesis-enzymes-in-atopic-dermatitis-skin-is-accompanied-by-changes-in-stratum-corneum-lipid-composition
#16
M O Danso, W Boiten, V van Drongelen, K M Gmelig, G Gooris, A El Ghalbzouri, S Absalah, R Vreeken, S Kezic, J van Smeden, A P M Lavrijsen, J A Bouwstra
BACKGROUND: The barrier dysfunction in atopic dermatitis (AD) skin correlates with stratum corneum (SC) lipid abnormalities including reduction of global lipid content, shorter ceramide (CER) as well as free fatty acid (FFA) chain length and altered CER subclass levels. However, the underlying cause of these changes in lipid composition has not been fully investigated. AIM: We investigated whether the expression of CER and FFA biosynthesis enzymes are altered in AD skin compared with control skin and determine whether changes in enzyme expression can be related with changes in lipid composition...
May 18, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28579438/imiquimod-induced-apoe-deficient-mice-might-be-a-composite-animal-model-for-the-study-of-psoriasis-and-dyslipideamia-comorbidity
#17
Xinran Xie, Lei Zhang, Yan Lin, Yan Wang, Weihong Liu, Xue Li, Ping Li
BACKGROUND: Psoriasis patients are at increased risk of developing lipid metabolism disturbances. Both psoriasis and dyslipideamia not only closely interact in disease development, but occur as mutual side effects in some medicine treatment. The interactive mechanism of the two diseases is complicated and still unclear. OBJECTIVE: Here, we proposed applying imiquimod on the dorsal skin of ApoE(-/-) mice to establish a composite animal model which formed psoriasiform skin lesions under hyperlipidemic condition...
May 17, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28551094/a-synthetic-peptide-blocking-trpv1-activation-inhibits-uv-induced-skin-responses
#18
So Min Kang, Sangbum Han, Jang-Hee Oh, Young Mee Lee, Chi-Hyun Park, Chang-Yup Shin, Dong Hun Lee, Jin Ho Chung
BACKGROUND: Transient receptor potential type 1 (TRPV1) can be activated by ultraviolet (UV) irradiation, and mediates UV-induced matrix metalloproteinase (MMP)-1 and proinflammatory cytokines in keratinocytes. Various chemicals and compounds targeting TRPV1 activation have been developed, but are not in clinical use mostly due to their safety issues. OBJECTIVE: We aimed to develop a novel TRPV1-targeting peptide to inhibit UV-induced responses in human skin. METHODS: We designed and generated a novel TRPV1 inhibitory peptide (TIP) which mimics the specific site in TRPV1 (aa 701-709: Gln-Arg-Ala-Ile-Thr-Ile-Leu-Asp-Thr, QRAITILDT), Thr(705), and tested its efficacy of blocking UV-induced responses in HaCaT, mouse, and human skin...
May 17, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28558978/the-efficacy-and-safety-of-tofacitinib-in-asian-patients-with-moderate-to-severe-chronic-plaque-psoriasis-a-phase-3-randomized-double-blind-placebo-controlled-study
#19
JianZhong Zhang, Tsen-Fang Tsai, Min-Geol Lee, Min Zheng, Gang Wang, HongZhong Jin, Jun Gu, RuoYu Li, QuanZhong Liu, Jin Chen, CaiXia Tu, ChunMei Qi, Hua Zhu, William C Ports, Tim Crook
BACKGROUND: Tofacitinib is an oral Janus kinase inhibitor. OBJECTIVE: This study assessed tofacitinib efficacy and safety vs placebo in Asian patients with moderate to severe chronic plaque psoriasis. METHODS: Patients from China mainland, Taiwan, and Korea were randomized 2:2:1:1 to tofacitinib 5mg (N=88), tofacitinib 10mg (N=90), placebo→5mg (N=44), or placebo→10mg (N=44), twice daily (BID) for 52 weeks. Placebo-treated patients advanced to tofacitinib at Week 16...
May 16, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28554590/the-antimicrobial-peptide-derived-from-insulin-like-growth-factor-binding-protein-5-amp-ibp5-regulates-keratinocyte-functions-through-mas-related-gene-x-receptors
#20
Panjit Chieosilapatham, François Niyonsaba, Chanisa Kiatsurayanon, Ko Okumura, Shigaku Ikeda, Hideoki Ogawa
BACKGROUND: In addition to their microbicidal properties, host defense peptides (HDPs) display various immunomodulatory functions, including keratinocyte production of cytokines/chemokines, proliferation, migration and wound healing. Recently, a novel HDP named AMP-IBP5 (antimicrobial peptide derived from insulin-like growth factor-binding protein 5) was shown to exhibit antimicrobial activity against numerous pathogens, even at concentrations comparable to those of human β-defensins and LL-37...
May 16, 2017: Journal of Dermatological Science
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