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Keloids

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https://www.readbyqxmd.com/read/29139364/advanced-management-of-severe-keloids
#1
REVIEW
Thomas Hagele, Hoka Nyanda, Nishit Patel, Nicole Russell, George Cohen, Christopher Nelson
Keloids negatively impact the health and quality of life of many affected dermatologic patients. Treating keloids is often difficult, and suboptimal responses are frequent. Fortunately, there are many treatment options available to the clinician that may lead to improved clinical outcomes. We present a review of currently available therapeutic options. Intralesional steroid injection remains the first-line treatment for keloids. Imiquimod, direct interferon therapy, or intralesional 5-flurouracil may alleviate the need for excessive corticosteroid therapy...
2017: Skinmed
https://www.readbyqxmd.com/read/29132871/the-role-of-tgf%C3%AE-in-wound-healing-pathologies
#2
REVIEW
Dimitra Kiritsi, Alexander Nyström
Wound healing is one of the most complex processes in multicellular organisms, involving numerous intra- and intercellular signalling pathways in various cell types. It involves extensive communication between the cellular constituents of diverse skin compartments and its extracellular matrix. Miscommunication during healing may have two distinct damaging consequences: the development of a chronic wound or the formation of a hypertrophic scar/keloid. Chronic wounds are defined as barrier defects that have not proceeded through orderly and timely reparation to regain structural and functional integrity...
November 10, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29122407/three-dimensional-poly-lactic-co-glycolic-acid-scaffold-containing-autologous-platelet-rich-plasma-supports-keloid-fibroblast-growth-and-contributes-to-keloid-formation-in-a-nude-mouse-model
#3
Chunlin Chen, Haibin Wang, Guozhang Zhu, Zhongsheng Sun, Xiang Xu, Fangwei Li, Shengkang Luo
BACKGROUND: There is a lack of proper animal models to study keloid formation. AIM: To create three-dimensional poly lactic-co-glycolic acid (PLGA) scaffolds containing autologous platelet-rich plasma (PRP) as an in vitro culture environment for keloid fibroblasts (KL), and to study their implantation into nude mice to mimic the process of keloid formation. METHODS: Normal fibroblasts (FB) and KL cells were isolated from surgical specimens and transduced with lentivirus loaded with green fluorescent protein (GFP) and luciferase genes...
October 26, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29118355/decoy-wnt-receptor-slrp6e1e2-expressing-adenovirus-induces-anti-fibrotic-effect-via-inhibition-of-wnt-and-tgf-%C3%AE-signaling
#4
Won Jai Lee, Jung-Sun Lee, Hyo Min Ahn, Youjin Na, Chae Eun Yang, Ju Hee Lee, JinWoo Hong, Chae-Ok Yun
Aberrant activation of the canonical Wingless type (Wnt) signaling pathway plays a key role in the development of hypertrophic scars and keloids, and this aberrant activation of Wnt pathway can be a potential target for the development of novel anti-fibrotic agents. In this study, we evaluated the anti-fibrotic potential of a soluble Wnt decoy receptor (sLRP6E1E2)-expressing non-replicating adenovirus (Ad; dE1-k35/sLRP6E1E2) on human dermal fibroblasts (HDFs), keloid fibroblasts (KFs), and keloid tissue explants...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29116332/-therapy-of-scars-with-lasers
#5
REVIEW
G G Gauglitz, J Pötschke, M T Clementoni
Scar formation is the consequence of trauma to the skin that affects the deep parts of the dermis. Different scar types like immature, mature, atrophic, hypertrophic, or keloid scars can develop depending on factors like age, anatomic localization, cause of trauma, the course of the healing process, and individual predispositions. Keloids and hypertrophic scars are often associated with itching, pain, tautness of the skin, and functional impairments, thus, leading to significantly reduced quality of life in some patients...
November 7, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/29105155/the-tension-biology-of-wound-healing
#6
REVIEW
Hans I-Chen Harn, Rei Ogawa, Chao-Kai Hsu, Michael W Hughes, Ming-Jer Tang, Cheng-Ming Chuong
Following skin wounding, the healing outcome can be; regeneration, repair with normal scar tissue, repair with hypertrophic scar tissue, or the formation of keloids. The role of chemical factors in wound healing has been extensively explored, and while there is evidence suggesting the role of mechanical forces, its influence is much less well defined. Here we provide a brief review on the recent progress of the role of mechanical force in skin wound healing by comparing laboratory mice, African spiny mice, fetal wound healing, and adult scar keloid formation...
November 4, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/29102488/a-simple-device-for-ablation-of-keloidal-tissue-and-serial-deposition-of-intralesional-drugs
#7
Savita Yadav, Somesh Gupta
No abstract text is available yet for this article.
November 1, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29098727/bilateral-breast-keloids-in-an-elderly-woman-associated-with-bilateral-breast-cancers-and-high-concentration-of-serum-tumor-growth-factor-%C3%AE
#8
Masanobu Sakaguchi, Takeshi Fukumoto, Fumiyoshi Fujishima, Kaori Fukuda, Takeshi Kozaru, Masao Ban, Masahiro Oka
We report a case of bilateral annular breast keloids in a 72-year-old woman who had been suffering from bilateral breast cancers. Histopathologically, the keloids showed unique distribution of α-SMA+, CD34- myofibroblasts and α-SMA-, CD34+ fibroblasts depending on the region. High serum levels of tumor growth factor-β were detected at 6 months after the development of the breast keloids, but not at 10 months. CD163-positive cells were abundantly detected in the skin of the elevated portion of the keloids...
November 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/29098115/comparison-of-intralesional-triamcinolone-acetonide-5-fluorouracil-and-their-combination-for-the-treatment-of-keloids
#9
Sunil Srivastava, Aditya Nanasaheb Patil, Chaitra Prakash, Hiranmayi Kumari
Objective: Despite the myriad options available, there is no universally accepted treatment for keloids. Our objective was to compare three regimens and establish superiority in terms of objective and subjective outcomes. Approach: In this randomized parallel group study, 60 patients were enrolled and randomly allocated to three groups. Patients received intralesional injections of triamcinolone acetonide (TAC) in Group TAC, 5-fluorouracil (5FU) in Group 5FU, and a combination in Group T + F every 3 weeks till 24 weeks or till the keloid resolved...
November 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/29094366/observer-blind-randomized-controlled-study-of-a-cosmetic-blend-of-safflower-olive-and-other-plant-oils-in-the-improvement-of-scar-and-striae-appearance
#10
Stephan Bielfeldt, Jürgen Blaak, Rainer Wohlfart, Caroline Manger, Klaus-P Wilhelm
OBJECTIVE: The normal process of skin tissue repair following injury invariably results in visual scarring. It is known that topical treatment with hydrophobic cosmetics high in silicone and mineral oil content can improve the appearance of scars and striae. Given lifestyle preferences of many cosmetic consumers towards so-called natural treatments, the objective of this controlled randomized study was to investigate the efficacy of a plant body oil rich in oleic and linoleic acids (Bio Skin Oil(®) ) for improving the appearance of scars and striae...
November 2, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29089212/up-regulation-of-%C3%AE-1-adrenoceptors-in-burn-and-keloid-scars
#11
Peter D Drummond, Linda F Dawson, Fiona M Wood, Mark W Fear
Stimulation of α1-adrenoceptors evokes inflammatory cytokine production, boosts neurogenic inflammation and pain, and influences cellular migration and proliferation. Hence, these receptors may play a role both in normal and abnormal wound healing. To investigate this, the distribution of α1-adrenoceptors in skin biopsies of burn scars (N=17), keloid scars (N=12) and unscarred skin (N=17) was assessed using immunohistochemistry. Staining intensity was greater on vascular smooth muscle in burn scars than in unscarred tissue, consistent with heightened expression of α1-adrenoceptors...
October 28, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/29083048/complete-excision-of-proliferating-core-in-auricular-keloids-significantly-reduces-local-recurrence-a-prospective-study
#12
Yosep Chong, Chan Woo Kim, Yong Sung Kim, Choong Hyun Chang, Tae Hwan Park
Keloids are mysterious soft-tissue tumors that are characterized by excessive reparative processes composed of collagen-forming fibroblasts and inflammatory cells. Generally, complete tumor excision regardless of sufficient margin is considered as a first-line treatment because they are considered reactive rather than a neoplastic condition. Recently, a specific part of the keloids is being highlighted as an important microstructure for local recurrence, but there has been very little evidence. We conducted a prospective study to evaluate the relationship of recurrence and several clinicopathological parameters with specific focus on surgical resection margin...
October 30, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/29076632/a-novel-model-of-humanised-keloid-scarring-in-mice
#13
Tao Shang, Bin Yao, Dongyun Gao, Jiangfan Xie, Xiaobing Fu, Sha Huang
Treatments for keloid scarring are a major challenge to scientists and physicians for their unknown aetiology. Although several models, including monolayer cell culture to tissue-engineered models, were developed, further research on keloid has more or less been hindered by the lack of appropriate animal models. Because these aberrant scars are specific to humans, we obtained human normal and keloid skin tissues and isolated dermal fibroblasts from them. Cell morphology, growth and immunohistochemical staining of myofibroblastmarker α-SMA were examined, and the cell medium of 2-hour culture and 24-hour culture was implanted on the back of nude mice...
October 27, 2017: International Wound Journal
https://www.readbyqxmd.com/read/29072623/how-signaling-molecules-regulate-tumor-microenvironment-parallels-to-wound-repair
#14
REVIEW
Peter Gál, Lenka Varinská, Lenka Fáber, Štepán Novák, Pavol Szabo, Petra Mitrengová, Andrej Mirossay, Pavel Mučaji, Karel Smetana
It is now suggested that the inhibition of biological programs that are associated with the tumor microenvironment may be critical to the diagnostics, prevention and treatment of cancer. On the other hand, a suitable wound microenvironment would accelerate tissue repair and prevent extensive scar formation. In the present review paper, we define key signaling molecules (growth factors, cytokines, chemokines, and galectins) involved in the formation of the tumor microenvironment that decrease overall survival and increase drug resistance in cancer suffering patients...
October 26, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29069016/topical-cryoanesthesia-for-the-relief-of-pain-caused-by-steroid-injections-used-to-treat-hypertrophic-scars-and-keloids
#15
RANDOMIZED CONTROLLED TRIAL
Xiuxia Wang, Xiaoli Wu, Ke Liu, Lingling Xia, Xunxun Lin, Wei Liu, Zhen Gao
Intralesional steroid injections are the standard treatment for hypertrophic scars and keloids. The procedure is, however, quite painful and is unpopular with patients because of this. Topical application of anesthetic creams, such as Ametop gel (tetracaine) and EMLA cream (lidocaine and prilocaine), has limited efficacy because of poor drug penetration. The onset of the analgesic effect is also slow, which means that the use of topical anesthetics is time-consuming in clinical practice.We hypothesized that a commercially available cryotip could be used to provide fast-acting topical cryoanesthesia that would reduce the pain associated with steroid injections...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29064976/considerations-when-treating-cosmetic-concerns-in-men-of-color
#16
REVIEW
Olabola Awosika, Cheryl M Burgess, Pearl E Grimes
BACKGROUND: Men of color include a diverse population encompassing individuals with Fitzpatrick skin Types IV through VI. Yet, there is a paucity of data describing the cosmetic concerns of this population. OBJECTIVE: To review the basic science of advantages and disadvantages of skin of color and pathophysiology, incidence, and treatment of disorders of cosmetic concern in men of color. METHODS: A MEDLINE search was performed for publications on sex and racial differences in basic science of skin, common disorders in men of color, and evidence-based treatments...
November 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29053518/role-of-homeodomain-interacting-protein-kinase-2-in-the-pathogenesis-of-tissue-fibrosis-in-keloid-derived-keratinocytes
#17
Yi-Xuan Zhao, Guo-You Zhang, An-Yuan Wang, Ya-Hong Chen, Da-Mu Lin, Qing-Feng Li
Epithelial-mesenchymal transition (EMT) plays a critical role in fibrotic keloid formation, which is characterized by excessive collagen and extracellular matrix synthesis and deposition. Growing evidence suggests that the serine/threonine kinase homeodomain-interacting protein kinase 2 (HIPK2) acts upstream of several major fibrosis signaling pathways; however, the role of HIPK2 in the keloid fibrogenesis remains unknown. In the current study, we investigated the roles of HIPK2 in the pathogenesis of keloids...
December 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29050938/tumor-suppressive-role-of-mir-1224-5p-in-keloid-proliferation-apoptosis-and-invasion-via-the-tgf-%C3%AE-1-smad3-signaling-pathway
#18
Xiaodong Yao, Xiaomei Cui, Xiaoyan Wu, Pan Xu, Wenyan Zhu, Xiaodong Chen, Tianlan Zhao
The molecular mechanism of the pathogenesis of keloids is still not known and the clinical management of keloids remains challenging. MiRNA (microRNA) is a novel class of small regulatory RNAs that has emerged as key post-transcriptional regulators of gene expression. MiRNAs participate in diverse biological processes of various skin diseases and function as key regulators in the occurrence and development of tumors. The purpose of this study was to investigate the involvement of miRNAs in keloid pathogenesis...
October 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29047002/treatment-of-keloid-scars-using-light-laser-and-energy-based-devices-a-contemporary-review-of-the-literature
#19
E Forbat, F R Ali, F Al-Niaimi
Keloid scars are common and have a predilection for young, ethnic skin often with a family history. Keloids can be painful and pruritic and cause significant emotional distress when particularly visible or prominent. In this article, we review the evidence underlying the use of laser- and energy-based devices for treatment of keloid scars, either as monotherapy or in conjunction with other therapies such as corticosteroids, surgery and silicone gel in the treatment of keloid scars.
December 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29029852/human-adipose-tissue-derived-stem-cells-inhibit-the-activity-of-keloid-fibroblasts-and-fibrosis-in-a-keloid-model-by-paracrine-signaling
#20
Jianlan Liu, Jie Ren, Lina Su, Shimeng Cheng, Jing Zhou, Xiaolu Ye, Yabin Dong, Silei Sun, Fazhi Qi, Zhifei Liu, Jonathon Pleat, Hongjun Zhai, Ningwen Zhu
BACKGROUND: Human adipose tissue-derived mesenchymal stem cells (ASCs) have potential utility as modulators of the regeneration of tissue that is inflamed or scarred secondary to injuries such as burns or trauma. However, the effect of ASCs on one particular type of scarring, keloidal disease, remains unknown. The absence of an optimal model for investigation has hindered the development of an effective therapy using ASCs for keloids. OBJECTIVE: To investigate the influence of ASCs on angiogenesis, extracellular matrix deposition, and inflammatory cell influx in keloids...
October 10, 2017: Burns: Journal of the International Society for Burn Injuries
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