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Hypertrophic scar

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https://www.readbyqxmd.com/read/28526301/mfg-e8-reprogramming-of-macrophages-promotes-wound-healing-by-increased-bfgf-production-and-fibroblast-functions
#1
Patrick Laplante, Frédéric Brillant-Marquis, Marie-Joëlle Brissette, Benjamin Joannette-Pilon, Romain Cayrol, Victor Kokta, Jean-François Cailhier
Macrophages are essential for tissue repair. They have a crucial role in cutaneous wound healing, participating actively in the inflammation phase of the process. Unregulated macrophage activation may, however, represent a source of excessive inflammation leading to abnormal wound healing and hypertrophic scars. Our research group has demonstrated that apoptotic endothelial and epithelial cells secrete Milk Fat Globule Epidermal Growth Factor-8 (MFG-E8), which has the ability to reprogram macrophages from a M1 (pro-inflammatory) to a M2 (anti-inflammatory pro-repair) phenotype...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28507865/reconstitution-of-human-keloids-in-mouse-skin
#2
Ataru Sunaga, Hideaki Kamochi, Shunji Sarukawa, Hirokazu Uda, Yasushi Sugawara, Rintaro Asahi, Daekwan Chi, Shiho Nakagawa, Koji Kanayama, Kotaro Yoshimura
BACKGROUND: Keloids are a dermal fibroproliferative scar of unknown etiology. There is no good animal model for the study of keloids, which hinders the development and assessment of treatments for keloids. METHODS: Human keratinocytes and dermal fibroblasts were isolated from 3 human skin tissues: normal skin, white scars, and keloids. A mixed-cell slurry containing keratinocytes and dermal fibroblasts was poured into a double chamber implanted on the back of NOD/Shi-scid/IL-2Rγnull mice...
April 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28503719/radiation-and-depression-associated-with-complications-of-tissue-expander-reconstruction
#3
Paul J Chuba, William A Stefani, Carrie Dul, Susan Szpunar, Jeffrey Falk, Rachael Wagner, Elango Edhayan, Anna Rabbani, Cynthia H Browne, Amr Aref
PURPOSE: Rates of implant failure, wound healing delay, and infection are higher in patients having radiation therapy (RT) after tissue expander (TE) and permanent implant reconstruction. We investigated pretreatment risk factors for TE implant complications. PATIENTS AND METHODS: 127 breast cancer patients had TE reconstruction and radiation. For 85 cases of bilateral TE reconstruction, the non-irradiated breast provided an internal control. Comparison of differences in means for continuous variables used analysis of variance, then multiple pairwise comparisons with Bonferroni correction of p value...
May 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28502356/dealing-with-the-stiff-ankle-preoperative-and-late-occurrence
#4
REVIEW
Beat Hintermann, Roxa Ruiz, Alexej Barg
In patients with a stiff ankle replacement, appropriate resection of scarred capsular structures, hypertrophic bone debridement, and careful release of tendons should be performed to achieve good outcomes. Appropriately sized and correctly implanted components are required to restore ankle function to as normal as possible. Although not proven, the better a total ankle replacement is balanced, the less likely scar and heterotopic bone formation will occur. In patients with a stiff and painful ankle replacement, a preoperative diagnostic workup is mandatory to understand the underlying pathologic process and plan appropriate treatment...
June 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28499239/effect-of-recombinant-human-endostatin-on-hypertrophic-scar-fibroblast-apoptosis-in-a-rabbit-ear-model
#5
Yong-Fang Gong, Xiao-Ming Zhang, Jian Yu, Tian-Yu Huang, Zhen-Zhen Wang, Fei Liu, Xue-Ying Huang
Hypertrophic scar (HS) is a dermal fibroproliferative disorder characterized by the excessive proliferation of fibroblasts and is thought to result from a cellular imbalance caused by the increased growth and reduced apoptosis of hypertrophic scar fibroblasts (HSFs). Our recent study demonstrated that recombinant human endostatin (rhEndostatin) plays a key role in the inhibition of HSF proliferation in vitro, with a resulting decrease in dermal thickness and scar hypertrophy. However, the effect of this protein on HSF apoptosis is unknown...
May 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28487843/anaphylaxis-following-intralesional-triamcinolone-acetonide-kenacort-injection
#6
Wannada Laisuan, Chamard Wongsa, Nizchapha Dchapaphapeaktak, Malinee Tongdee, Jidapa Chatmapanrangsee, Ticha Rerkpattanapipat
Intralesional triamcinolone acetonide injection is indicated for multiple skin conditions such as keloid scars, alopecia areata, and hypertrophic lichen planus. Immediate hypersensitivity reaction remains uncommon. We report on a 24-year-old woman who had received multiple intralesional injections with triamcinolone acetonide (Kenacort) plus lidocaine for keloid scar treatment without any reaction for the previous 10 years. The immediate reaction occurred 15 minutes after injection, with numbness on her face and 5 minutes later with urticaria on her chest wall and upper extremities, together with hypotension (blood pressure of 90/60 mmHg)...
April 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/28486306/therapeutic-use-of-stem-cells-in-treatment-of-burn-injuries
#7
Jasmine Z Cheng, Ali Farrokhi, Aziz Ghahary, Reza B Jalili
Burn injuries are one of the most common sources of trauma globally that comprise a significant drain on long-term personal and healthcare cost. Large surface area burn wounds are difficult to manage and may result in significant physiologic and psychologic sequelae. The goal of burn wound healing research is to fully repair and restore skin's original structure and functionality while minimizing problems such as hypertrophic scarring and contracture. One of the ways this can be achieved is through augmentation of the skin's natural healing process using the regenerative capability of stem cells...
May 8, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28475442/investigating-histological-aspects-of-scars-in-children
#8
I Westra, P D H M Verhaegen, H Ibrahim Korkmaz, K I Braam, G J L Kaspers, H W M Niessen, F B Niessen
OBJECTIVE: Very little is known about histological aspects of paediatric scars and the possible role of the immune system during their formation. In this study, the histology thoracic scars caused by the placement of an implantable central venous access device in children who underwent treatment for cancer was assessed. METHOD: The amount and type of collagen, the collagen orientation, the type of elastic fibres, the vascularsation, and the count of neutrophils, macrophages, and lymphocytes were analysed...
May 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28472181/hypertrophic-scar-regression-is-linked-to-the-occurrence-of-endothelial-dysfunction
#9
Xi-Qiao Wang, Fei Song, Ying-Kai Liu
Most microvessels have been shown to become stenosed or completely occluded during hypertrophic scar progression. Here, we examined the morphology of capillary endothelial cells (ECs) and fibroblasts using immunofluorescence staining for CD31 and alpha-smooth muscle actin (α-SMA) and electron microscopy. In addition, ECs and fibroblasts were isolated from scar tissues, and the levels of transforming growth factor beta 1 (TGF-β1), platelet-derived growth factor (PDGF), endothelin 1 (ET-1), vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) were assayed using ELISAs...
2017: PloS One
https://www.readbyqxmd.com/read/28471550/-retrospective-study-of-epidemiological-and-clinical-characteristics-of-pediatric-burns-in-the-chu-li%C3%A3-ge-burn-center
#10
A Taxhet, D Jacquemin
In Belgium, epidemiological data are rare, and most often extrapolated, for burn injuries, especially in the pediatrician population. The purpose of this study was to obtain data for the pediatrician population in Liege. It retrospectively analyzed burns in the pediatrician population treated in the Burn Center Liege, during five years. Overall 844 patients (379 girls, 465 boys) were included for the first part of this study (burns localization and etiology, sex ratio, age), with a mean age of 4.2 years old...
April 2017: Revue Médicale de Liège
https://www.readbyqxmd.com/read/28469575/honokiol-alleviates-hypertrophic-scar-by-targeting-transforming-growth-factor-%C3%AE-smad2-3-signaling-pathway
#11
Danyang Zhao, Yu Wang, Chao Du, Shengzhou Shan, Yifan Zhang, Zijing Du, Dong Han
Hypertrophic scar (HPS) presents as excessive extracellular matrix deposition and abnormal function of fibroblasts. However, there is no single satisfactory method to prevent HPS formation so far. Here, we found that honokiol (HKL), a natural compound isolated from Magnolia tree, had an inhibitory effect on HPS both in vitro and in vivo. Firstly, HKL could dose-dependently down-regulate the mRNA and protein levels of type I collagen, type III collagen, and α-smooth muscle actin (α-SMA) in hypertrophic scar-derived fibroblasts (HSFs)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28468207/management-of-rhinophyma-outcomes-study-of-the-subunit-method
#12
Aladdin H Hassanein, Raj M Vyas, Jessica Erdmann-Sager, Edward J Caterson, Julian J Pribaz
BACKGROUND: Rhinophyma causes a nasal deformity and functional airway obstruction. Partial excision (eg, tangential) with secondary healing commonly removes hypertrophic soft tissues but does not improve nasal support. The subunit method for rhinophyma uses 6 nasal flaps to provide exposure for removal of rhinophymatous tissue and enhance structure. The purpose of this study was to evaluate outcomes of subunit method. METHODS: Medical records of patients with rhinophyma treated with the subunit method between 2013 and 2016 were analyzed...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28425593/medium-sized-nevus-spilus-of-the-neck-treated-with-pulsed-dye-laser
#13
Vito Abrusci, Valentina Benzecry
Patients with large benign melanocytic lesions located on the neck represent a therapeutic challenge since the neck is a high-risk area for hypertrophic scarring and/or retraction. When treating a benign, extensive and visible melanocytic lesion, the choice of therapy mainly depends on the likelihood of improved cosmesis. We report a case of a 33-year-old woman with a medium-sized Nevus Spilus located on the neck, successfully treated with four sessions of pulsed dye laser. We achieved an excellent clinical and cosmetic result in such a challenging area...
April 20, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28403507/endothelial-dysfunction-and-mechanobiology-in-pathological-cutaneous-scarring-lessons-learned-from-soft-tissue-fibrosis
#14
REVIEW
C Huang, L Liu, Z You, Y Zhao, J Dong, Y Du, R Ogawa
Hypertrophic scars/keloids are pathogenic scars that are characterized by collagen and fibroblast accumulation. The endothelia in the lesions are mechanosensitive and participate actively in the pathogenesis of these scars. The present review summarizes how endothelium responds to mechanical stimuli such as shear, stretch, and hydrostatic pressure. It also shows that in heart, liver, kidney, and lung fibrosis, endothelial dysfunctions (EDs) associate with changes in vascular tone, endothelial permeability, coagulation, and vasomodulation that result in inflammation, hypertension, and coagulation...
April 12, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28403265/improvement-of-atrophic-acne-scars-in-skin-of-color-using-topical-synthetic-epidermal-growth-factor-egf-serum-a-pilot-study
#15
Marie Alexia Stoddard, Jennifer Herrmann, Lauren Moy, Ronald Moy
<p>BACKGROUND: Atrophic scarring in skin of color is a common, permanent, and distressing result of uncontrolled acne vulgaris. Ablative lasers and chemical peels are frequently used to improve the appearance of atrophic scars, primarily through the stimulation of collagen and elastin; however, these treatment modalities are associated with risks, such as dyspigmentation and hypertrophic scarring, especially in patients with darker skin.</p> <p>OBJECTIVE: We evaluated the efficacy of topically applied synthetic epidermal growth factor (EGF) serum in reducing the appearance of atrophic acne scars in skin of color...
April 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28402404/long-term-outcome-of-surgical-cryoablation-for-refractory-ventricular-tachycardia-in-patients-with-non-ischemic-cardiomyopathy
#16
Jackson J Liang, Brian P Betensky, Daniele Muser, Erica S Zado, Elad Anter, Nimesh D Desai, David J Callans, Rajat Deo, David S Frankel, Mathew D Hutchinson, David Lin, Michael P Riley, Robert D Schaller, Gregory E Supple, Pasquale Santangeli, Michael A Acker, Joseph E Bavaria, Wilson Y Szeto, Prashanth Vallabhajosyula, Francis E Marchlinski, Sanjay Dixit
Aims: Limited data exist on the long-term outcome of patients (pts) with non-ischemic cardiomyopathy (NICM) and ventricular tachycardia (VT) refractory to conventional therapies undergoing surgical ablation (SA). We aimed to investigate the long-term survival and VT recurrence in NICM pts with VT refractory to radiofrequency catheter ablation (RFCA) who underwent SA. Methods and results: Consecutive pts with NICM and VT refractory to RFCA who underwent SA were included...
April 10, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28401348/ultrapulsed-fractional-ablative-carbon-dioxide-laser-treatment-of-hypertrophic-burn-scars-evaluation-of-an-in-patient-controlled-standardized-treatment-approach
#17
Julian Poetschke, Ulf Dornseifer, Matteo Tretti Clementoni, Markus Reinholz, Hannah Schwaiger, Stephanie Steckmeier, Thomas Ruzicka, Gerd G Gauglitz
In this study, we aimed to quantify the effects of fractional ablative carbon dioxide laser therapy in the treatment of widespread hypertrophic burn scars. While many different pilot studies have described the potential of the technology and expert groups and current guidelines, alike, recommend its use, the level of evidence for the efficacy of fractional CO2-laser treatment for burn scars is currently very low. Ten patients (three male, seven female) with hypertrophic burn scars were treated with a single course of fractional CO2-laser therapy in an in-patient controlled setup, using a standardized treatment paradigm...
April 12, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28388720/new-uses-of-abobotulinumtoxina-in-aesthetics
#18
Joel Schlessinger, Erin Gilbert, Joel L Cohen, Joely Kaufman
BotulinumtoxinA (BoNT-A) is now widely established for the main approved indication of reducing glabellar lines, and is also widely used off-label to improve the appearance of wrinkles and lines in other parts of the face. The number of aesthetic procedures continues to increase as the patient population becomes more diverse, in particular with increasing numbers of people of color and men. Further developments in treatment may continue to expand the audience for BoNT-A by making procedures more comfortable and by delivering a more natural, less static appearance...
May 1, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28384007/effect-of-chymase-activity-on-skin-thickness-in-the-clawn-miniature-pig-hypertrophic-scarring-model
#19
Shotaro Jimi, Hajime Matsumura
OBJECTIVE: The female red Duroc pig, a heavy and cumbersome animal, is routinely used as an animal model for hypertrophic scarring. Chymase, a chymotrypsin-like serine protease, plays an important role in skin fibrosis. This study aimed to create a lightweight pig hypertrophic scarring model using Clawn miniature pigs, and to investigate the role of chymase in hypertrophic scarring. METHODS: After creating four skin wounds (7.5 × 7.5 cm, depth = 0.15 cm) in each pig, skin biopsies were performed after 15, 30, 60, 90, 120, and 150 days...
April 6, 2017: Journal of Plastic Surgery and Hand Surgery
https://www.readbyqxmd.com/read/28374304/septum-enhanced-mammaplasty-in-inferocentral-pedicled-breast-reduction-for-macromastia-and-gigantomastia-patients
#20
Aurelio Portincasa, Francesco Ciancio, Luigi Cagiano, Alessandro Innocenti, Domenico Parisi
BACKGROUND: Inferior pedicle and free nipple grafting are commonly used as breast reduction techniques for patients with breast hypertrophy and gigantomastia. Limitations of these techniques are, respectively, possible vascular compromise and total/partial necrosis of the nipple-areola complex (NAC). The authors describe the innovative inferocentral pedicled reduction mammaplasty (ICPBR) enhanced by preservation of Würinger's septum for severe hypertrophic breasts. MATERIALS AND METHODS: Among 287 breast reductions performed between January 2001 and 2015, 83 (28...
April 3, 2017: Aesthetic Plastic Surgery
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