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Garrett T Prince, Michael C Cameron, Ramin Fathi, Theodore Alkousakis
INTRODUCTION: 5-fluorouracil has proven to be an effective therapy in the treatment of a variety of dermatologic conditions. Approved by the United States Food and Drug Administration for the topical treatment of actinic keratoses and superficial basal cell carcinoma, 5-fluorouracil has also demonstrated efficacy in the treatment of a variety of other dermatologic diseases. While best known for its use as a topical medication, 5-fluorouracil can also be delivered intralesionally for the treatment of dermatologic disease...
March 1, 2018: Journal of Drugs in Dermatology: JDD
Farrukh Aslam Khalid, Usman Khalid Farooq, Muhammad Saleem, Jibran Rabbani, Muhammad Amin, Kamal Uddin Khan, Younas Mehrose, Moazzam N Tarar
BACKGROUND: The ear is the common site for keloid formation especially in women after ear piercing. Surgery is the main stay of treatment in these lesions but there are large numbers of treatment failures in surgery alone. OBJECTIVE: The objective of this study was to compare the efficacy of post-excision intralesional 5-fluorouracil/triamcinolone acetonide (5-FU/TAC) and post-excision radiotherapy in the treatment of ear keloids. STUDY DESIGN: A randomized controlled trial...
March 10, 2018: Burns: Journal of the International Society for Burn Injuries
Ying Liu, Lihong Ren, Wenjing Liu, Zhibo Xiao
MiR-21 has been found to be up-regulated in keloid tissue and affect the proliferation and apoptosis of keloid fibroblasts. However, the possible related mechanisms remain unclear. In this study, we aimed to evaluate the role of miR-21 in FasL-induced caspase-8 activation and mitochondrial-mediated apoptotic signaling pathway in keloid fibroblasts. According to the present study, the protein level of FasL was decreased by miR-21 overexpression, while enhanced by miR-21 inhibition in keloid fibroblasts. Subsequently, the mitochondrial-mediated apoptosis of keloid fibroblasts was restrained by miR-21 overexpression as evidenced by enhanced mitochondria membrane potential and decreased production of mitochondrial ROS...
March 10, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
Meng-Zhu Lu, Qian-Qian Ang, Xiang Zhang, Lan-Fang Zhang, Xiu-Hua Yao, Hong Lv, Xiao-Dong Zheng, Wen-Sheng Lu
A keloid is the process of skin healing, collagen synthesis and metabolism of the loss of normal control in a sustained hyperactive state, resulting in excessive proliferation of collagen fibers. A large-scale genome-wide association study (GWAS) has identified multiple single nucleotide polymorphisms (SNPs) in the 3q22.3 loci that are associated with keloids in a Japanese population. However, the associations of SNPs in 3q22.3 with keloids were not confirmed in a selected Chinese population by a replication study...
2018: American Journal of Translational Research
Z-Y Chen, X-F Yu, J-Q Huang, D-L Li
OBJECTIVE: To investigate the role of β-catenin siRNA on proliferation and apoptosis of keloid fibroblast cell. PATIENTS AND METHODS: Real-time polymerase chain reaction (RT-PCR) and Western blot were performed to monitor the mRNA and protein expression levels of β-catenin in pathological scar tissue and adjacent normal tissue. Human keloid fibroblast cells (KFB) were isolated from the keloid's tissue by enzyme digestion assay and identified by immunocytochemistry assay...
February 2018: European Review for Medical and Pharmacological Sciences
Ho Jun Lee, Yong Ju Jang
Hypertrophic scars and keloids are fibroproliferative disorders that may arise after any deep cutaneous injury caused by trauma, burns, surgery, etc. Hypertrophic scars and keloids are cosmetically problematic, and in combination with functional problems such as contractures and subjective symptoms including pruritus, these significantly affect patients' quality of life. There have been many studies on hypertrophic scars and keloids; but the mechanisms underlying scar formation have not yet been well established, and prophylactic and treatment strategies remain unsatisfactory...
March 2, 2018: International Journal of Molecular Sciences
Venkataram Mysore, Omprakash H Mahadevappa, Shyamanta Barua, Imran Majid, Vishalakshi Viswanath, Ramesh M Bhat, Suresh Talwar, Salim Thurakkal, Sanjeev J Aurangabadkar, Manas Chatterjee, Anil Ganjoo
Background: Currently, the standard protocol regarding the performance of procedures on patients receiving or having recently received isotretinoin (13- cis -retinoic acid) states that the procedures should not be performed. The recommendations in standard books and drug insert require discontinuation of isotretinoin for 6 months before performing cosmetic procedures, including waxing, dermabrasion, chemical peels, laser procedures, or incisional and excisional cold-steel surgery. These recommendations have been followed for over two decades despite little evidence for the stated increased risk of scarring...
October 2017: Journal of Cutaneous and Aesthetic Surgery
Grace Limandjaja, Lenie J van den Broek, Melanie Breetveld, Taco Waaijman, Stan Monstrey, Edith de Boer, Rik Scheper, Frank Niessen, Susan Gibbs
To understand scar pathology, develop new drugs, and provide a platform for personalized medicine, physiologically relevant human scar models are required which are characteristic of different scar pathologies. Hypertrophic scars and keloids are two types of abnormal scar resulting from unknown abnormalities in the wound healing process. While they display different clinical behavior, differentiation between the two can be difficult - which in turn means that it is difficult to develop optimal therapeutic strategies...
February 28, 2018: Tissue Engineering. Part C, Methods
Mark Fisher, Brandon Alba, Tawfiqul Bhuiya, Armen K Kasabian, Charles H Thorne, Neil Tanna
BACKGROUND: Recent health care changes have encouraged efforts to decrease costs. In plastic surgery, an area of potential cost savings includes appropriate use of pathologic examination. Specimens are frequently sent because of hospital policy, insurance request, or habit, even when clinically unnecessary. This is an area where evidence-based guidelines are lacking and significant cost-savings can be achieved. METHODS: All specimen submitted for pathologic examination at two hospitals between January and December of 2015 were queried for tissue expanders, breast implants, fat, skin, abdominal pannus, implant capsule, hardware, rib, bone, cartilage, scar, and keloid...
March 2018: Plastic and Reconstructive Surgery
Jacklyn N Hellwege, Shirley B Russell, Scott M Williams, Todd L Edwards, Digna R Velez Edwards
Keloids are benign dermal tumors occurring approximately 20 times more often in individuals of African descent as compared to individuals of European descent. While most keloids occur sporadically, a genetic predisposition is supported by both familial aggregation of some keloids and large differences in risk among populations. Despite Africans and African Americans being at increased risk over lighter-skinned individuals, little genetic research exists into this phenotype. Using a combination of admixture mapping and exome analysis, we reported multiple common variants within chr15q21...
February 27, 2018: Annals of Human Genetics
Jayaraman Jayamani, Ariram Naisini, Balaraman Madhan, Ganesh Shanmugam
Excess accumulation of collagen(fibrosis) is the hallmark of many fibrotic diseases such as keloids, hypertrophic scars, etc. The inhibition of collagen fibrillation during its accumulation is a therapeutic way to limit the fibrosis. Herein, the effect of Ferulic acid(FA), a natural phenolic acid compound, on collagen fibrillation is studied using biophysical methods. Optical density(OD) and microscopic analysis indicate that FA inhibits collagen self-association, and the inhibitory efficiency depends on the concentration and temperature...
February 21, 2018: International Journal of Biological Macromolecules
Yosuke Yagi, Yutaka Kuwatsuka, Misachi Asai, Mai Honda, Atsushi Utani
Rubinstein-Taybi syndrome (RTS) is an autosomaldominant hereditary disease, which contains many skeletal and organ anomalies as well as mental retardation. Although high incidence of keloids in RTS is known, it is difficult to find a detailed report on the clinical features of keloids. In the following letter, we report an RTS patient fulfilling diagnostic criteria whosuffered from both keloids and pilomatricoma. We also performed a literature search, which identified the possible involvement of the Wnt/β-catenin signaling pathway in the pathogenesis of these two skin lesions...
January 15, 2018: Dermatology Online Journal
Xiuxia Wang, Yan Ma, Zhen Gao, Jun Yang
BACKGROUND: A keloid is a fibroproliferative disorder occurring in wounds characterized by an exaggerated response to injury. To date, no effective cure has been identified. As multipotent stem cells, human adipose-derived stem cells (ADSCs) may show the possibility for curing diseases such as fibrosis. This study sought to explore the potential role of human ADSCs in curing keloids. METHODS: After culture in conditioned medium, gene and protein expression of keloid fibroblasts was examined using real-time polymerase chain reaction (RT-PCR) and Western blotting, while analysis of the cell cycle was used to measure the proliferative properties of the cells...
February 21, 2018: Stem Cell Research & Therapy
Maday Fernández-Mayola, Lázaro Betancourt, Alicia Molina-Kautzman, Sucel Palomares, Yssel Mendoza-Marí, Dayana Ugarte-Moreno, Ana Aguilera-Barreto, Yilian Bermúdez-Álvarez, Vladimir Besada, Luis J González, Ariana García-Ojalvo, Ana J Mir-Benítez, Aleida Urquiza-Rodríguez, Jorge Berlanga-Acosta
Hypertrophic scars (HTS) and keloids are forms of aberrant cutaneous healing with excessive extracellular matrix (ECM) deposition. Current therapies still fall short and cause undesired effects. We aimed to thoroughly evaluate the ability of growth hormone releasing peptide 6 (GHRP6) to both prevent and reverse cutaneous fibrosis and to acquire the earliest proteome data supporting GHRP6's acute impact on aesthetic wound healing. Two independent sets of experiments addressing prevention and reversion effects were conducted on the classic HTS model in rabbits...
February 21, 2018: International Wound Journal
Rishi J Gupta, Stephen T Connelly, Rebeka G Silva, Nat R Gwilliam
Keloids are the physical manifestation of an exaggerated inflammatory response resulting in excess collagen deposition. The resulting fibroproliferative mass can be distressing for patients due to appearance, pruritus, and/or pain. Despite extensive research into the pathophysiology of keloid formation and the development of numerous treatments, keloids remain a challenge to treat. Even when the initial treatment is successful, a risk of recurrence remains. Basic science research into viable cryopreserved placental membranes and viable cryopreserved umbilical tissue has demonstrated their anti-inflammatory and anti-fibrotic effects, which may decrease keloid recurrence after excision...
January 2018: Plastic and Reconstructive Surgery. Global Open
R Simões, C Alves, L Tavares, I Balacó, P Sá Cardoso, T Pu Ling, G Matos
Purpose: The overriding fifth toe is a congenital triplane deformity that may cause aesthetic and functional concerns in children and adolescents. This study aims to evaluate the results obtained when using Butler's arthroplasty to treat this forefoot deformity. Methods: We performed a retrospective study, including all patients undergoing Butler's arthroplasty from January 1995 to December 2012. Clinical records were reviewed to determine age at date of surgery, gender, laterality, preoperative symptoms, success of deformity correction, postoperative pain, scarring, need for adapted shoe, rates of complications and recurrence...
February 1, 2018: Journal of Children's Orthopaedics
Jiaqi Liu, Huayu Zhu, Hongtao Wang, Jun Li, Fu Han, Yang Liu, Wanfu Zhang, Ting He, Na Li, Zhao Zheng, Dahai Hu
Keloid, a benign skin disorder, forms during wound healing in genetically susceptible individuals. To better control keloid and understand the molecular mechanisms, this study screened gene hypermethylations of GEO database microarray data on keloids and identified the hypermethylation of the secreted frizzled related protein-1 (SFRP1) promoter. Subsequently, hypermethylation and mRNA and protein levels were assessed in 57 cases of keloid vs. normal skin tissues. Fibroblasts from tissues were isolated for the assessment of gene regulation in vitro...
February 17, 2018: Journal of Molecular Histology
Akira Kitamura, Yoshihito Ishida, Hiroshi Kubota, Chan-Gi Pack, Takayuki Homma, Shinya Ito, Kazutaka Araki, Masataka Kinjo, Kazuhiro Nagata
Heat shock protein 47 kDa (HSP47), an ER-resident and collagen-specific molecular chaperone, recognizes collagenous hydrophobic amino acid sequences (Gly-Pro-Hyp) and assists in secretion of correctly folded collagen. Elevated collagen production is correlated with HSP47 expression in various diseases, including fibrosis and keloid. HSP47 knockdown ameliorates liver fibrosis by inhibiting collagen secretion, and inhibition of the interaction of HSP47 with procollagen also prevents collagen secretion. Therefore, a high-throughput system for screening of drugs capable of inhibiting the interaction between HSP47 and collagen would aid the development of novel therapies for fibrotic diseases...
February 10, 2018: Biochemical and Biophysical Research Communications
Eveline Bijlard, Reinier Timman, Gerda M Verduijn, Frank B Niessen, Steven E R Hovius, Marc A M Mureau
BACKGROUND: Keloids are a burden for patients due to physical, aesthetic and social consequences. Treatment remains a challenge due to therapy resistance and high recurrence rates. The main goals of treatment are to improve scar appearance and symptoms and patients' quality of life (QoL). METHODS: Two multicentre, randomised controlled open trials that compared 1) intralesional cryotherapy with excision and corticosteroid injections for primary keloids, and 2) intralesional cryotherapy with excision and brachytherapy for therapy resistant keloids...
February 6, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Xu Mingyuan, Pang Qianqian, Xu Shengquan, Ye Chenyi, Lei Rui, Shen Yichen, Xu Jinghong
Hypoxia of local tissue occurs during the scar formation; however, the degree of ischemia and hypoxia in the central areas of keloids is more serious than those in normal scars. Hypoxia-induced factor (HIF), is one of the main cellular responses to hypoxia, allowing cells to adapt to low-oxygen conditions. We investigated the correlation among hypoxia, transforming growth factor-β1/Smad signaling and collagen deposition. Hypoxia up-regulated TGF-β1, Smad2/3, p-Smad2/3, Smad4, and total collagen in both normal and keloid fibroblasts via HIF-1α, which was attenuated by HIF-1α inhibition, but TβRII levels were not significantly altered...
January 9, 2018: Oncotarget
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