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Keloids

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https://www.readbyqxmd.com/read/29344474/corneal-myofibroma-keloid-in-a-young-patient-with-neurofibromatosis-type-2
#1
Lisa Zimmermann, Thomas Reinhard, Clemens Lange, Steffen Heegaard, Claudia Auw-Haedrich
We present a 27-year-old male patient with neurofibromatosis type 2 (NF2), facial palsy, and lagophthalmos following acoustic neuroma removal and an impressing vascularized corneal tumor, which was excised. Histology showed a fibrous tumor with small vessels, and immunohistochemistry was positive for vimentin and negative for smooth muscle actin, S100, and GFAP. We assume a corneal myofibroma (keloid), which in this case rather represents a reactive lesion. This entity has not been described before in NF2 or in facial palsy-associated lagophthalmos in general...
November 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29337061/metabolic-reprogramming-in-keloid-fibroblasts-aerobic-glycolysis-and-a-novel-therapeutic-strategy
#2
Qi Li, Zelian Qin, Fangfei Nie, Hongsen Bi, Runlei Zhao, Bailin Pan, Jianxun Ma, Xiang Xie
Keloids, tumor-like fibroproliferative cutaneous lesions, were reported in metabolic disturbance. However, the metabolic character remains unclear. The purpose of this study is to determine if glycolytic reprogramming is important for the pathogenesis of keloids and to assess the inhibition potential of glycolysis in keloid treatment. An intracellular metabolic profile assay was used to compare metabolic phenotypes between normal skin fibroblasts and keloid fibroblasts (NFs and KFs). Our data indicated that KFs underwent reprogramming of their metabolic phonotype from oxidative phosphorylation to aerobic glycolysis (Warburg effect) with augmented glycolysis and glycolytic capacity...
January 11, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29330940/extracorporeal-shockwave-therapy-for-treatment-of-keloid-scars
#3
Ching-Jen Wang, Jih-Yang Ko, Wen-Yi Chou, Jai-Hong Cheng, Yur-Ren Kuo
The purpose of this investigation was to study the effectiveness of extracorporeal shockwave therapy (ESWT) for the treatment of keloid scars, and compared the results with intralesional steroid injection. Thirty-nine patients were randomly divided into 22 in ESWT group and 17 in steroid group. The ESWT group received 3 ESWT treatments in 6 weeks. The steroid group received 3 intra-lesional triamcinolone injections in 6 weeks. The evaluations included gross morphology, functional outcome, local blood flow perfusion, biopsy for histopathological examination and immunohistochemical analysis...
January 13, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29328420/ginsenoside-rg3-inhibits-keloid-fibroblast-proliferation-angiogenesis-and-collagen-synthesis-in-vitro-via-the-tgf%C3%A2-%C3%AE-smad-and-erk-signaling-pathways
#4
Mengyao Tang, Weiwei Bian, Liying Cheng, Lu Zhang, Rong Jin, Wenbo Wang, Yuguang Zhang
A wide range of therapeutic options exists for the treatment of keloids, all of which have their own strengths; however, a high risk of side‑effects and frequent recurrence remains. Therefore, the present study aimed to identify improved therapeutic approaches or drugs for the treatment of keloids. Ginsenoside Rg3 (Rg3) has been reported to exert numerous antitumor effects, thus indicating that Rg3 may be a potential therapeutic agent that targets keloids. The present study determined the effects of Rg3 on human keloid fibroblasts (KFs) in vitro, and further explored the associated molecular and cellular mechanisms...
January 4, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29319568/optimizing-radiotherapy-for-keloids
#5
Sebastian Q Vrouwe, Robert Cartotto, Alan David Rogers
No abstract text is available yet for this article.
January 9, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29316083/near-infrared-fluorescent-molecular-probe-for-sensitive-imaging-of-keloid
#6
Qingqing Miao, David C Yeo, Christian Wiraja, Jianjian Zhang, Xiaoyu Ning, Chenjie Xu, Kanyi Pu
Early detection of skin diseases is imperative for their effective treatment. However, fluorescence molecular probes that allow this are rare. The first activatable near-infrared (NIR) fluorescent molecular probe is reported for sensitive imaging of keloid cells, skin cells from abnormal scar fibrous lesions. As keloid cells have high expression levels of fibroblast activation protein-alpha (FAPα), the probe (FNP1) is designed to have a caged NIR dye and a FAPα-cleavable peptide substrate linked by a self-immolative segment...
January 5, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29316036/inhibition-of-ire1-results-in-decreased-scar-formation
#7
Tatiana V Boyko, Rakesh Bam, Dadi Jiang, Zhen Wang, Namrata Bhatia, Misha C Tran, Michael T Longaker, Albert C Koong, George P Yang
Wound healing is characterized by the production of large amounts of protein necessary to replace lost cellular mass and extracellular matrix. The unfolded protein response (UPR) is an important adaptive cellular response to increased protein synthesis. One of the main components of the UPR is IRE1, an ER transmembrane protein with endonuclease activity that produces the activated form of the transcription factor XBP1. Using luciferase reporter mice for Xbp1 splicing, we showed that IRE1 was up-regulated during excisional wound healing at the time in wound healing consistent with that of the proliferative phase, when the majority of protein synthesis for cellular proliferation and matrix deposition occurs...
January 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29313035/peptide-delivery-with-poly-ethylene-glycol-diacrylate-microneedles-through-swelling-effect
#8
Shiying Liu, David C Yeo, Christian Wiraja, Hong Liang Tey, Milan Mrksich, Chenjie Xu
Transdermal delivery of therapeutic biomolecules (including peptides) can avoid enzymatic digestion that occurs in the oral route. (Polyethylene glycol) diacrylate (PEGDA)-based microneedles, with good biocompatibility, are easily fabricated through photo-polymerization with a precisely controlled structure. It has successfully been used for the transdermal delivery of small molecule drugs such as 5-fluorouracil. However, the delivery of peptide-based therapeutics using this platform is seldom reported. This is because of the potential damage to the peptide during the photo-polymerization process of PEGDA...
September 2017: Bioengineering & Translational Medicine
https://www.readbyqxmd.com/read/29305151/efficacy-and-the-toxicity-of-the-interstitial-high-dose-rate-brachytherapy-in-the-management-of-recurrent-keloids-5-year-outcomes
#9
Ping Jiang, Matthias Geenen, Frank-André Siebert, Julia Bertolini, Bjoern Poppe, Ulf Luetzen, Juergen Dunst, Daniel Druecke
PURPOSE: Recurring keloids are a clinical challenge. Interdisciplinary treatments are required in most cases. Owing to the wide variety of concepts, the optimal treatment regime remains unclear. Our clinic established a protocol of perioperative interstitial high-dose-rate brachytherapy with three fractions of 6 Gy and achieved an excellent 2-year local control rate of 94% (In search of the optimal treatment of keloids: Report of a series and a review of the literature). This report is an update on our long-term results of prospective study...
January 2, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29288488/autografting-in-the-treatment-of-large-auricular-keloids
#10
David M Kowalczyk, J Randall Jordan
No abstract text is available yet for this article.
December 30, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29286129/knockdown-of-elf3a-inhibits-tgf%C3%A2-%C3%AE-1%C3%A2-induced-extracellular-matrix-protein-expression-in-keloid-fibroblasts
#11
Tianyu Li, Junxiang Zhao
Keloid formation is characterized by hyperproliferation of secretory and responsive keloid fibroblasts (KFs) and overproduction of extracellular matrix (ECM). Eukaryotic translation initiation factor 3 subunit A (eIF3a) one of the core subunits of the translation initiation complex, eIF3, has previously been reported to possess an anti‑fibrogenic effect. However, the role of eIF3a in keloid formation has not yet been investigated. Therefore, the present study examined the effect of eIF3a on transforming growth factor‑β1 (TGF‑β1)‑mediated ECM expression in KFs...
December 29, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29285054/gene-expression-profiling-analysis-of-keloids-with-and-without-hydrocortisone-treatment
#12
Hongyi Wang, Liangliang Quan, Jiulong Liang, Jie Shi, Tao Qiu, Ye Zhang, Yang Wang, Qiang Hui, Yu Zhang, Kai Tao
The present study aimed to investigate the genetic effects of hydrocortisone (HC) treatment on keloids and screen medicines to be used in a combination therapy of keloids with HC. The dataset GSE7890 was downloaded from Gene Expression Omnibus. It contained data regarding 4 fibroblast samples from normal scar tissue and 5 samples from keloid tissue with HC treatment, as well as 5 samples from normal scar and 5 samples from keloids without HC treatment. Following the identification of differentially expressed genes (DEGs), the functions of these DEGs were analyzed by Gene Ontology (GO) and pathway enrichment analyses...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29283384/high-mobility-group-box-1-mediates-fibroblast-activity-via-rage-mapk-and-nf-%C3%AE%C2%BAb-signaling-in-keloid-scar-formation
#13
Jihee Kim, Jong-Chul Park, Mi Hee Lee, Chae Eun Yang, Ju Hee Lee, Won Jai Lee
Emerging studies have revealed the involvement of high-mobility group box 1 (HMGB1) in systemic fibrotic diseases, yet its role in the cutaneous scarring process has not yet been investigated. We hypothesized that HMGB1 may promote fibroblast activity to cause abnormal cutaneous scarring. In vitro wound healing assay with normal and keloid fibroblasts demonstrated that HMGB1 administration promoted the migration of both fibroblasts with increased speed and a greater traveling distance. Treatment of the HMGB1 inhibitor glycyrrhizic acid (GA) showed an opposing effect on both activities...
December 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29282183/techniques-for-optimizing-surgical-scars-part-2-hypertrophic-scars-and-keloids
#14
Kathryn Potter, Sailesh Konda, Vicky Zhen Ren, Apphia Lihan Wang, Aditya Srinivasan, Suneel Chilukuri
Surgical management of benign or malignant cutaneous tumors may result in noticeable scars that are of great concern to patients, regardless of sex, age, or ethnicity. Techniques to optimize surgical scars are discussed in this three-part review. Part 2 focuses on scar revision for hypertrophic and keloids scars. Scar revision options for hypertrophic and keloid scars include corticosteroids, bleomycin, fluorouracil, verapamil, avotermin, hydrogel scaffold, nonablative fractional lasers, ablative and fractional ablative lasers, pulsed dye laser (PDL), flurandrenolide tape, imiquimod, onion extract, silicone, and scar massage...
2017: Skinmed
https://www.readbyqxmd.com/read/29249529/optimal-high-dose-rate-brachytherapy-fractionation-scheme-after-keloid-excision-a%C3%A2-retrospective-multicenter-comparison-of-recurrence-rates-and-complications
#15
Eveline Bijlard, Gerda M Verduijn, J X Harmeling, Homan Dehnad, Frank B Niessen, Otto W M Meijer, Marc A M Mureau
PURPOSE: To determine the optimal brachytherapy dose and fractionation scheme for keloid treatment. METHODS AND MATERIALS: Patient cohorts from 3 centers treated with keloid excision followed by 2 × 9 Gy, 3 × 6 Gy, or 2 × 6 Gy high-dose-rate brachytherapy were retrospectively compared regarding recurrence (after at least 12 months' follow-up) and complications (after at least 1 month's follow-up), using logistic regression analyses. RESULTS: A total of 238 keloids were treated...
November 4, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29245305/a-melanotic-malignant-melanoma-presenting-as-a-keloid-a-case-report
#16
Jinjing Jia, Min Wang, Liumei Song, Yiguo Feng
RATIONALE: Amelanotic malignant melanoma (AMM) is a rare subtype of malignant melanoma (MM) that manifests atypically and is easily misdiagnosed or missed altogether. The keloid type of AMM has rarely been reported. Herein, we provide information to improve the clinical diagnosis of AMM types and raise awareness to ensure early diagnosis and timely treatment. PATIENT CONCERNS: A 20-year old woman presented with a mass on her left shoulder of 1 year's duration that had been treated surgically...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29240593/insights-into-the-pathophysiology-of-hypertrophic-scars-and-keloids-how-do-they-differ
#17
(no author information available yet)
No abstract text is available yet for this article.
January 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29240586/insights-into-the-pathophysiology-of-hypertrophic-scars-and-keloids-how-do-they-differ
#18
Feras M Ghazawi, Ramin Zargham, Mirko S Gilardino, Denis Sasseville, Fatemeh Jafarian
GENERAL PURPOSE: To provide information about the clinical presentation of hypertrophic scars and keloids based on their varied structural components. TARGET AUDIENCE: This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES: After completing this continuing education activity, you should be able to: ABSTRACT: Hypertrophic scars and keloids are firm, raised, erythematous plaques or nodules that manifest when the cicatrix fails to properly heal...
January 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29240273/endothelial-dysfunction-may-promote-keloid-growth
#19
Chikage Noishiki, Gen Takagi, Yoshiaki Kubota, Rei Ogawa
Keloid is a cutaneous fibroproliferative disorder. It results from impaired wound healing that generates persistent inflammation and extensive deposition of collagen fibers in the wound/scar. Keloids tend to be worse in hypertensive patients. The present prospective cross-sectional study assessed whether endothelial dysfunction, which occurs in hypertension, associates with keloid formation and progression. This study included randomly-selected patients with keloids who were assessed for surgical keloid treatment in 2013-2014...
December 14, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29239971/optimizing-radiotherapy-for-keloids-a-meta-analysis-systematic-review-comparing-recurrence-rates-between-different-radiation-modalities
#20
Jeong Hyeon Kim, Jeong Mo Koo, Tae Hwan Park
No abstract text is available yet for this article.
January 2018: Annals of Plastic Surgery
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