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Journal of Dermatological Science

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https://read.qxmd.com/read/31118160/keratinocyte-derived-tgf%C3%AE-is-not-required-to-maintain-skin-immune-homeostasis
#1
Yi Yang, Yukari Zenke, Toshiro Hirai, Daniel H Kaplan
BACKGROUND: Transforming growth factor beta 1 (TGFβ) is known to be a regulator of autoimmunity. Loss of TGFβ leads to severe multi-organ autoimmunity in mice. In skin, role of TGFβ in suppressing autoimmunity is unclear. OBJECTIVE: Determine whether Keratinocyte (KC)-derived TGFβ is required for skin immune homeostasis. METHODS: We generated K14-CreERT2 TGFβ1fl/fl (TGFβΔKC ) mice allowing for tamoxifen-induced deletion of TGFβ1 in KC...
May 7, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31079997/systemic-sclerosis-is-the-epithelium-a-missing-piece-of-the-pathogenic-puzzle
#2
REVIEW
Yoshihide Asano, Takehiro Takahashi, Ryosuke Saigusa
Systemic sclerosis (SSc) is a multisystem connective tissue disease characterized by three cardinal pathological features, such as autoimmunity/inflammation, vasculopathy and extensive organ fibrosis. Therefore, numerous interests have been put on the roles of immune cells, vascular cells (endothelial cells and pericytes/vascular smooth muscle cells) and interstitial fibroblasts as well as their precursors in the field of SSc research. However, recent studies with clinical samples and animal models have drawn much attention to the potential role of epithelial cells as a member of critical drivers and/or modifiers in the pathogenesis of SSc...
May 1, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31079998/toll-like-receptor-2-utilizes-rab11a-for-melanosome-transfer-from-melanocytes-to-keratinocytes
#3
LETTER
Saaya Koike, Kenshi Yamasaki, Takeshi Yamauchi, Ryoko Shimada-Omori, Kenichiro Tsuchiyama, Setsuya Aiba
No abstract text is available yet for this article.
April 30, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31036445/trif-and-mavs-signaling-pathways-regulate-rab27a-induction-and-melanosome-transfer-by-tlr3-signaling-in-human-epidermal-melanocytes
#4
LETTER
Saaya Koike, Kenshi Yamasaki, Takeshi Yamauchi, Ryoko Shimada-Omori, Kenichiro Tsuchiyama, Setsuya Aiba
No abstract text is available yet for this article.
April 19, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31023613/classification-of-3097-patients-from-the-japanese-melanoma-study-database-using-the-american-joint-committee-on-cancer-eighth-edition-cancer-staging-system
#5
Yasuhiro Fujisawa, Shusuke Yoshikawa, Akane Minagawa, Tatsuya Takenouchi, Kenji Yokota, Hiroshi Uchi, Naoki Noma, Yasuhiro Nakamura, Jun Asai, Junji Kato, Susumu Fujiwara, Satoshi Fukushima, Jiro Uehara, Toshihiko Hoashi, Tatsuya Kaji, Taku Fujimura, Kenjiro Namikawa, Manabu Yoshioka, Naoki Murata, Dai Ogata, Kanako Matsuyama, Naohito Hatta, Yoshitsugu Shibayama, Toshiharu Fujiyama, Masashi Ishikawa, Daisuke Yamada, Akiko Kishi, Yoshiyuki Nakamura, Takatoshi Shimiauchi, Kazuyasu Fujii, Manabu Fujimoto, Hironobu Ihn, Norito Katoh
BACKGROUND: The American Joint Committee on Cancer (AJCC) 8th Edition Cancer Staging System was implemented in 2018; however, it has not been validated in an Asian melanoma population. OBJECTIVE: The purpose of this study was to validate the new system using a cohort of Japanese melanoma patients. METHODS: The AJCC 7th and 8th Editions were used for TNM classification of patients in a database established by the Japanese Melanoma Study Group...
April 17, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31010609/cyto-chemokine-profile-of-in-vitro-scratched-keratinocyte-model-implications-of-significant-upregulation-of-ccl20-cxcl8-and-il36g-in-koebner-phenomenon
#6
Kazuhisa Furue, Takamichi Ito, Yuka Tanaka, Ayako Yumine, Akiko Hashimoto-Hachiya, Masaki Takemura, Maho Murata, Kazuhiko Yamamura, Gaku Tsuji, Masutaka Furue
BACKGROUND: Scratch injury induces Koebner phenomenon in psoriasis. Smoking is also a risk factor for psoriasis. Keratinocytes can produce various psoriasis-related molecules including TNF, IL1 A, IL1B, IL6, IL12B, IL17C, IL23 A, IL36 A, IL36B, IL36 G, CXCL1, CXCL2, CXCL8, CXCL9, CXCL10, CCL20, IFNB, and CAMP. However, the scratch-induced molecular profiling remains elusive. OBJECTIVE: To profile the induction pattern of above-mentioned psoriasis-related and keratinocyte-derived molecules by scratch injury in the presence or absence of anti-psoriatic drugs or benzo[a]pyrene, a major environmental pollutant of tobacco smoke...
April 13, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31023612/identification-of-genetic-alterations-in-extramammary-paget-disease-using-whole-exome-analysis
#7
Yukiko Kiniwa, Jun Yasuda, Sakae Saito, Rumiko Saito, Ikuko N Motoike, Inaho Danjoh, Kengo Kinoshita, Nobuo Fuse, Masayuki Yamamoto, Ryuhei Okuyama
BACKGROUND: Extramammary Paget disease (EMPD) is a rare cutaneous malignant neoplasm, and the genomic alterations underlying its pathogenesis are unknown. OBJECTIVE: To identify tumor-specific genomic alterations in EMPD. METHODS: Exome analysis was performed in specimens from three EMPD patients, and target amplicon sequencing was done for genes frequently mutated in other adenocarcinomas. RESULTS: Exome analysis revealed recurrent somatic mutations in several genes, includingTP53, PIK3CA, and ERBB2...
April 11, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30987854/berberine-protects-immortalized-line-of-human-melanocytes-from-h-2-o-2-induced-oxidative-stress-via-activation-of-nrf2-and-mitf-signaling-pathway
#8
Wei Jiang, Shuli Li, Xuguang Chen, Weigang Zhang, Yuqian Chang, Yuanmin He, Shaolong Zhang, Xin Su, Tianwen Gao, Chunying Li, Zhe Jian
BACKGROUND: Oxidative stress plays important roles in the pathogenesis of vitiligo. The removal of hydrogen peroxided (H2 O2 ) has been established to be beneficial to vitiligo patients. Berberine (BBR), a natural isoquinoline alkaloid, has antioxidant activity, however, whether BBR can defend human melanocytes against oxidative injury remains to be elucidated. OBJECTIVE: In the present study, we investigated the potential protective effect of BBR against oxidative stress on an immortalized normal human melanocyte cell line PIG1...
April 2, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30956032/effects-of-irradiance-on-uva-induced-skin-aging
#9
Cheng-Che E Lan, Yu-Ting Hung, Ai-Hui Fang, Wu Ching-Shuang
BACKGROUND: Ultraviolet A (UVA) radiation is the most relevant component of solar radiation-induced skin aging. Sunscreens were used to minimize the harmful effects of UV radiation on our skin by reducing UV irradiance. We previously found that at equivalent fluence, UVB radiation at low irradiance (LI) has higher photocarcinogenic potential as compared to its high irradiance (HI) counterpart. OBJECTIVES: To examine the effects of equivalent fluence of UVA radiation administered at different irradiance on photoaging...
March 28, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30956031/fargesin-inhibits-melanin-synthesis-in-murine-malignant-and-immortalized-melanocytes-by-regulating-pka-creb-and-p38-mapk-signaling-pathways
#10
Ting Fu, Bowen Chai, Yuling Shi, Yongyan Dang, Xiyun Ye
BACKGROUND: Fargesin is commonly used in the treatment of allergic rhinitis, inflammation, sinusitis and headache. OBJECTIVE: The aim of the study is to investigate a new function of fargesin against melanin production and its underlying molecular mechanism. METHODS: B16F10 mouse melanoma cells, Melan-a and human epidermal melanocytes were treated with different concentrations of fargesin for the indicated time. The extracellular and cellular melanin content was detected by spectrometry at 490 nm and 405 nm, respectively...
March 28, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30956030/transcriptomic-analysis-of-human-dermal-fibroblast-cells-reveals-potential-mechanisms-underlying-the-protective-effects-of-visible-red-light-against-damage-from-ultraviolet-b-light
#11
Kim Hyun Soo, Kim Yeo Jin, Kim Su Ji, Kang Doo Seok, Tae Ryong Lee, Kim Hyoung-June, Shin Dong Wook, Seo Young Rok
BACKGROUND: Ultraviolet B (UVB) radiation is a major cause of skin photodamage, including the damage associated with photodermatoses, aging, and cancer. Although many studies have shown that red light has photoprotective effects on skin, the mechanisms underlying these effects are still poorly understood. OBJECTIVE: The aim of this study was to identify the photoprotective effects of visible red light against UVB-induced skin damage in normal human dermal fibroblast cells using a transcriptomic approach...
March 23, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30935779/emerging-evidence-for-the-essential-role-of-hyaluronan-in-cutaneous-biology
#12
REVIEW
Jun Muto, Koji Sayama, Richard L Gallo, Koji Kimata
Hyaluronan (HA), a linear non-sulfated glycosaminoglycan, participates in a variety of biological processes in the skin, such as cell-matrix interactions and activation of chemokines/cytokines, enzymes, and growth factors. In these activation events, HA acts as a damage-associated molecular pattern (DAMP). This review discusses the progress in functional research on HA, and its associated factors, in several aspects of cutaneous biology; e.g., immunity and wound repair.
March 19, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/31109652/efficacy-and-safety-of-dupilumab-monotherapy-in-adults-with-moderate-to-severe-atopic-dermatitis-a-pooled-analysis-of-two-phase-3-randomized-trials-liberty-ad-solo-1-and-liberty-ad-solo-2
#13
Diamant Thaçi, Eric L Simpson, Mette Deleuran, Yoko Kataoka, Zhen Chen, Abhijit Gadkari, Laurent Eckert, Bolanle Akinlade, Neil M H Graham, Gianluca Pirozzi, Marius Ardeleanu
BACKGROUND: Two phase 3 trials with identical design, LIBERTY AD SOLO 1 (NCT02277743) and LIBERTY AD SOLO 2 (NCT02277769), confirmed dupilumab efficacy and safety versus placebo in adults with moderate-to-severe atopic dermatitis (AD). OBJECTIVES: To report a pooled analysis of these trials to further explore dupilumab's effects on AD clinical parameters, patient-reported outcomes (PROs), symptoms of anxiety/depression, health-related quality of life (HRQoL), and safety...
March 12, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30954335/coa-cl-prevented-tgf-%C3%AE-1-induced-ctgf-expression-by-akt-dephosphorylation-in-normal-human-dermal-fibroblasts-and-it-attenuated-skin-fibrosis-in-mice-models-of-systemic-sclerosis
#14
Kozo Nakai, Sakiko Karita, Junske Igarashi, Ikuko Tsukamoto, Katsuya Hirano, Yasuo Kubota
BACKGROUND: Systemic sclerosis (SSc) is characterized by fibrosis of the skin and internal organs. Although transforming growth factor (TGF)-β1-induced connective tissue growth factor (CTGF/CCN2) expression has been presented in SSc fibrosis, the therapeutic potential of targeting CTGF in SSc has not been fully explored. COA-Cl is a novel nucleic acid analog, which is reported to have pleiotropic beneficial biologic effects. OBJECTIVE: We examine the effects of COA-Cl on TGF-β1-induced CTGF expression in normal human dermal fibroblast (NHDF)...
March 12, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30935778/gpr15-is-not-critically-involved-in-the-regulation-of-murine-psoriasiform-dermatitis
#15
Tanya Sezin, Linda Kempen, Lisa-Maria Meyne, Sadegh Mousavi, Detlef Zillikens, Christian D Sadik
BACKGROUND: GPR15 has been implicated in the pathogenesis of T cell-driven inflammation of the skin and the gut. Expression levels of the GPR15 ligand GPR15 L are increased in psoriatic skin and considered as potential biomarker for the treatment response to anti-IL-17 antibody therapies. However, the significance of the GPR15 L/GPR15 for the pathogenesis of psoriasis and the mechanisms regulating GPR15 L expression are still elusive. OBJECTIVE: To determine the significance of GPR15 signaling in mouse models of psoriasis...
March 12, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30904353/exosomal-mirna-derived-from-keratinocytes-regulates-pigmentation-in-melanocytes
#16
Ying Liu, Linli Xue, Hang Gao, Lucheng Chang, Xiuju Yu, Zhiwei Zhu, Xiaoyan He, Jianjun Geng, Yanjun Dong, Hongquan Li, Liping Zhang, Haidong Wang
BACKGROUND: Pigmentation is controlled by complex mechanisms. Evidence suggests that miRNAs can regulate pigmentation. However, the mechanism has not been fully elucidated. Objective In this study, we revealed a novel mechanism that regulates pigmentation involving exosomes, miRNAs and the crosstalk between keratinocytes and melanocytes. METHODS: The expression and localization of exosome specific marker TSG101 in keratinocytes and melanocytes; Changes of melanin content in melanocytes after co-culture of exosome and melanocytes; Expression changes of target gene TYR and its related genes and inhibitory effect of miR-330-5p on pigmentation were studied by using various molecular biological techniques...
March 12, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30904351/evaluating-hair-growth-promoting-effects-of-candidate-substance-a-review-of-research-methods
#17
REVIEW
Jungyoon Ohn, Kyu Han Kim, Ohsang Kwon
Androgenetic alopecia (AGA) is the most common form of hair loss disorder. As the prevalence of AGA rises, the demand for AGA treatments is rising accordingly, prompting research to identify therapeutic candidates to treat AGA. Because AGA is caused by crosstalk among multiple hair follicle (HF) cell components, understanding the effects of candidate molecules on HF cells is essential to determining therapeutic candidates for treatment. To date, research has centered on HF dermal papilla and outer root sheath cells and has indicated that the hair growth effects of candidate substances may be mediated via alterations in several signaling pathways and signature genes in these HF cells...
March 12, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30905492/a-novel-ror%C3%AE-t-inhibitor-is-a-potential-therapeutic-agent-for-the-topical-treatment-of-psoriasis-with-low-risk-of-thymic-aberrations
#18
Chihiro Imura, Azumi Ueyama, Yoshikazu Sasaki, Masaya Shimizu, Yoko Furue, Nobuyuki Tai, Kenichiro Tsujii, Kazufumi Katayama, Takayuki Okuno, Michitaka Shichijo, Kiyoshi Yasui, Mina Yamamoto
BACKGROUND: Retinoic acid receptor-related orphan receptor gamma t (RORγt) has critical roles in the development, maintenance and function of interleukin (IL)-17-producing cells and is a highly attractive target for the treatment of IL-17-mediated autoimmune disease, particularly psoriasis. On the other hand, RORγt is also critical for controlling apoptosis during thymopoiesis, and genetic RORγt ablation or systematic RORγt inhibition cause progressive thymic aberrations leading to T cell lymphomas...
March 8, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30904352/extracellular-vesicles-derived-from-malassezia-furfur-stimulate-il-6-production-in-keratinocytes-as-demonstrated-in-in-vitro-and-in-vivo-models
#19
Yu-Jing Zhang, Yang Han, Yu-Zhe Sun, Hang-Hang Jiang, Min Liu, Rui-Qun Qi, Xing-Hua Gao
BACKGROUND: Malassezia is one of the commensal microorganisms colonized on human skin and has been shown to be related to several inflammatory cutaneous disorders. Previous studies indicated that Malassezia. sympodialis (M. sympodialis) can produce extracellular vesicles, however, the immunoregulatory function of Malassezia extracellular vesicles on keratinocytes has not been studied. OBJECTIVE: To investigate the extracellular vesicular production capability of Malassezia...
March 7, 2019: Journal of Dermatological Science
https://read.qxmd.com/read/30792099/androgens-modulate-keratinocyte-differentiation-indirectly-through-enhancing-growth-factor-production-from-dermal-fibroblasts
#20
Chanat Kumtornrut, Takeshi Yamauchi, Saaya Koike, Setsuya Aiba, Kenshi Yamasaki
BACKGROUND: The main pathogenesis of acne vulgaris is increase in sebum production and abnormal keratinization of the hair infundibulum. The androgens are involved in acne pathogenesis by modulating sebaceous glands to enhance sebum production. However, the molecular mechanisms of abnormal keratinization of the hair infundibulum are not fully elucidated. OBJECTIVE: We hypothesized that the androgens affect the dermal fibroblasts, another androgen receptor-positive cells in the skin, resulting in abnormal keratinization through keratinocyte-fibroblast interaction...
March 2019: Journal of Dermatological Science
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