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https://www.readbyqxmd.com/read/28920474/the-state-of-ethnic-dermatology-in-canada
#1
Boluwaji Ogunyemi, Yvette Miller-Monthrope
Approximately 30% of Canadians will be members of a visible minority by 2031. When dermatology became an independent medical discipline in the late 18th and early 19th centuries, most residents of Canada and the United States were of Northern European descent. Morphology and descriptions of dermatoses are based on patients with light skin. Skin of colour dermatology refers to a unique field in dermatology dedicated to the diagnosis and management of disorders that are more prevalent in patients with moderately to richly pigmented skin...
September 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28905881/identification-of-asah1-as-a-susceptibility-gene-for-familial-keloids
#2
Regie Lyn P Santos-Cortez, Ying Hu, Fanyue Sun, Fairouz Benahmed-Miniuk, Jian Tao, Jitendra K Kanaujiya, Samuel Ademola, Solomon Fadiora, Victoria Odesina, Deborah A Nickerson, Michael J Bamshad, Peter B Olaitan, Odunayo M Oluwatosin, Suzanne M Leal, Ernst J Reichenberger
Keloids result from abnormal proliferative scar formation with scar tissue expanding beyond the margin of the original wound and are mostly found in individuals of sub-Saharan African descent. The etiology of keloids has not been resolved but previous studies suggest that keloids are a genetically heterogeneous disorder. Although possible candidate genes have been suggested by genome-wide association studies using common variants, by upregulation in keloids or their involvement in syndromes that include keloid formation, rare coding variants that contribute to susceptibility in non-syndromic keloid formation have not been previously identified...
October 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28899682/caveolin-1-controls-hyperresponsiveness-to-mechanical-stimuli-and-fibrogenesis-associated-runx2-activation-in-keloid-fibroblasts
#3
Chao-Kai Hsu, Hsi-Hui Lin, Hans I-Chen Harn, Rei Ogawa, Yang-Kao Wang, Yen-Ting Ho, Wan-Rung Chen, Yi-Chao Lee, Julia Yu-Yun Lee, Shyh-Jou Shieh, Chao-Min Cheng, John A McGrath, Ming-Jer Tang
Keloids are pathological scars characterized by excessive extracellular matrix production that are prone to form in body sites with increased skin tension. Caveolin-1 (CAV1), the principal coat protein of caveolae, has been associated with the regulation of cell mechanics, including cell softening and loss of stiffness sensing ability in NIH3T3 fibroblasts. Although CAV1 is present in low amounts in keloid fibroblasts (KFs), the causal association between CAV1 downregulation and its aberrant responses to mechanical stimuli remain unclear...
September 9, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28877838/advances-in-mechanisms-for-prevention-and-treatment-of-pathological-scars-with-mesenchymal-stem-cells
#4
Li-Jiang Yu, Xiao-Jun Wang, Xiao Long
Pathological scars,including keloids and hypertrophic scars,result from aberrations in the process of physiologic wound healing.An exaggerated inflammatory process is one of the main pathophysiological contributors.Pathological scars may cause pain and pruritis,limit joint mobility,and cause a range of cosmetic deformities that affect the patient's quality of life.However,the effectiveness of currently available prevention and treatment measures remains unsatisfactory.Mesenchymal stem cells,among their multifunctional roles,have the functions of immunomodulation and promotion of angiogenesis...
August 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28866016/disintegration-of-collagen-fibrils-by-glucono-%C3%AE-lactone-an-implied-lead-for-disintegration-of-fibrosis
#5
Jayaraman Jayamani, R Ravikanth Reddy, Balaraman Madhan, Ganesh Shanmugam
Excess accumulation of collagen (fibrosis) undergoes self-aggregation, which leads to fibrillar collagen, on the extracellular matrix is the hallmark of a number of diseases such as keloids, hypertrophic scars, and systemic scleroderma. Direct inhibition or disintegration of collagen fibrils by small molecules offer a therapeutic approach to prevent or treat the diseases related to fibrosis. Herein, the anti-fibrotic property of Glucono-δ-lactone (GdL), known as acidifier, on the fibrillation and its disintegration of collagen was investigated...
August 30, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28853175/safety-of-non-ablative-fractional-laser-for-acne-scars-within-1-month-after-treatment-with-oral-isotretinoin-a-randomized-split-face-controlled-trial
#6
Sandeep S Saluja, Matthew L Walker, Erika M Summers, Payam Tristani-Firouzi, David R Smart
BACKGROUND AND OBJECTIVE: Based on reports of poor wound healing and scarring, it is currently recommended that patients wait 6 months after completion of oral isotretinoin therapy before the safe initiation of laser treatment. Our aim was to evaluate the safety of non-ablative fractional laser (NAFL) treatment for acne scars within 1 month after isotretinoin therapy. STUDY DESIGN/METHODS: This was a randomized split-face controlled trial involving 10 patients with acne scars who had completed isotretinoin treatment...
August 29, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28846171/dermoscopy-and-the-diagnosis-of-primary-cutaneous-b-cell-lymphoma
#7
S Geller, A A Marghoob, A Scope, R P Braun, P L Myskowski
BACKGROUND: Primary cutaneous B-cell lymphomas (PCBCLs) are frequently misdiagnosed, and a biopsy is needed to attain the correct diagnosis. OBJECTIVE: To characterize the dermoscopic features of PCBCL. METHODS: In this retrospective observational study, we analysed the pathology reports of 172 newly diagnosed PCBCL for the initial clinical differential diagnosis. The dermoscopic images of 58 PCBCL were evaluated for dermoscopic features. Two dermoscopy experts, who were blinded to the diagnosis and the study objective, evaluated images from 17 cases for a dermoscopic differential diagnosis...
August 28, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28846161/different-properties-of-skin-of-different-body-sites-the-root-of-keloid-formation
#8
Liselotte Butzelaar, Frank B Niessen, Wendy Talhout, Dennis Pm Schooneman, Magda M Ulrich, Robert Hj Beelen, Aebele B Mink van der Molen
The purpose of this study was to examine extra cellular matrix composition, vascularization and immune cell population of skin sites prone to keloid formation. Keloids remain a complex problem, posing esthetical as well as functional difficulties for those affected. These scars tend to develop at anatomic sites of preference. Mechanical properties of skin vary with anatomic location and depend largely on extra cellular matrix composition. These differences in extra cellular matrix composition, but also vascularization and resident immune cell populations might play a role in the mechanism of keloid formation...
August 28, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28831357/periauricular-keloids-on-face-lift-scars-in-a-patient-with-facial-nerve-paralysis
#9
Masayo Aoki, Satoshi Akaishi, Noriko M Matsumoto, Takuya Tsuge, Ken Kubomura, Midori Nishikawa, Shunichi Nomoto, Rei Ogawa
Keloids are caused by excessive scar formation that leads to scar growth beyond the initial scar boundaries. Keloid formation and progression is promoted by mechanical stress such as skin stretch force. Consequently, keloids rarely occur in paralyzed areas and areas with little skin tension, such as the periauricular region. Therefore, periauricular incision is commonly performed for face lifts. We report a rare case of keloids that arose from face-lift scars in a patient with bilateral facial nerve paralysis...
July 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28818530/recent-developments-in-clinical-trials-of-botulinum-neurotoxins
#10
Antoniangela Cocco, Alberto Albanese
Botulinum neurotoxins (BoNTs) are increasingly used in clinical practice for several indications. Following the pioneering years of discoveries, the recent years have witnessed an increase of new indications and new toxin brands. We review here the clinical trials on BoNTs performed since 2014 and put them into perspective. We also review the ongoing trials listed by the National Institutes of Health registry (Clinicaltrials.gov). The following indications are reviewed here: blepharospasm, cervical dystonia, spasticity, cerebral palsy, urinary incontinence, headache, topical formulations, postoperative cardiac arrhythmia, keloids and scars...
August 14, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28807013/microneedle-physical-contact-as-a-therapeutic-for-abnormal-scars
#11
David C Yeo, Elizabeth R Balmayor, Jan-Thorsten Schantz, Chenjie Xu
BACKGROUND: Abnormal (keloid and hypertrophic) scars are a significant affliction with no satisfactory single modality therapy to-date. Available options are often ineffective, painful, potentially hazardous, and require healthcare personnel involvement. Herein a self-administered microneedle device based on drug-free physical contact for inhibiting abnormal scars is reported. Its therapeutic activity through microneedle contact eliminates hazards associated with toxic anti-scarring drugs while self-treatment enables administration flexibility...
August 14, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28803363/evaluation-of-nonablative-fractional-laser-treatment-in-scar-reduction
#12
Hilal Gokalp
Fractional lasers have been used for the improvement of scar tissue in the recent years but there has not been extensive research on their impact. The purpose of this study was to evaluate the efficacy of nonablative fractional laser (NAFL) on acne, burn, and surgery/traumatic scar. The scars were also categorized as atrophic, hypertrophic, and keloid, and treatment efficacy was investigated accordingly. This is a retrospective, single-center study. Scar tissues were treated using a nonablative fractional 1550-nm Erbium glass laser in high-energy parameters at 4-week interval for 4-8 sessions...
August 12, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28791472/keloid-skin-flap-retention-and-resurfacing-in-facial-keloid-treatment
#13
Shu Liu, Weizhong Liang, Kexin Song, Youbin Wang
OBJECTIVE: Facial keloids commonly occur in young patients. Multiple keloid masses often converge into a large lesion on the face, representing a significant obstacle to keloid mass excision and reconstruction. We describe a new surgical method that excises the keloid mass and resurfaces the wound by saving the keloid skin as a skin flap during facial keloid treatment. METHODS: Forty-five patients with facial keloids were treated in our department between January 2013 and January 2016...
August 8, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28764237/local-injection-of-triamcinolone-acetonide-a-forgotten-aetiology-of-cushing-s-syndrome
#14
Weera Sukhumthammarat, Prapaipan Putthapiban, Chutintorn Sriphrapradang
Many different non systemic corticosteroid administrations can cause iatrogenic Cushing's Syndrome (CS). We herein report a case series of iatrogenic CS from keloid scars treatment and aesthetic regimen called mesotherapy. Our first patient developed CS after having exceeded recommended dose of intralesional injection of Triamcinolone Acetonide (TAC). Second case presented with CS followed by unidentified mesotherapy treatment for local fat reduction. Subcutaneous injections of dexamethasone were found to be the part of mesotherapy regimen in one case...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28758907/the-sandwich-therapy-a-microsurgical-integrated-approach-for-presternal-keloid-treatment
#15
Ang Zeng, Kexin Song, Mingzi Zhang, Quancang Men, Youbin Wang, Lin Zhu, Zhifei Liu
BACKGROUND: Keloid therapy remains a great challenge for plastic surgeons, especially when the defect cannot be closed primarily, necessitating tissue transplantation. Here, we introduce a new treatment modality, called the sandwich therapy, for presternal keloids; the sandwich therapy incorporates preradiotherapy, superficial circumflex iliac artery perforator (SCIP) flap transplantation, and postradiotherapy. METHODS: From December 2012 to October 2013, 12 patients received the "sandwich therapy...
September 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28726006/microrna-21-in-skin-fibrosis-potential-for-diagnosis-and-treatment
#16
REVIEW
Yan Li, Juan Zhang, Yuying Lei, Lechun Lyu, Ruiling Zuo, Ting Chen
Skin fibrosis is a common pathological process characterized by fibroblast proliferation and excessive deposition of extracellular matrix. However, the pathogenesis of the disease is still not clear. Previous studies have shown that microRNA-21 may play pivotal roles in the regulation of a variety of skin fibrosis, including keloid, scleroderma, and hypertrophic scar. In this review, we outline the structure, expression, and regulation of microRNA-21 and its role in fibrotic skin diseases. In future, it may be useful as a prognostic or diagnostic marker...
July 19, 2017: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/28690124/microneedling-where-do-we-stand-now-a-systematic-review-of-the-literature
#17
REVIEW
Lisa Ramaut, Henk Hoeksema, Ali Pirayesh, Filip Stillaert, Stan Monstrey
BACKGROUND: Patients who suffer from scars or wrinkles have several therapeutic options to improve the appearance of their skin. The available treatment modalities that provide desirable results are often overtly invasive and entail a risk of undesirable adverse effects. Microneedling has recently emerged as a non-ablative alternative for treating patients who are concerned with the aesthetic changes that result from injury, disease or ageing. OBJECTIVE: This review aims to evaluate the current evidence in the literature on microneedling...
June 17, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28664654/acne-keloidalis-nuchae-risk-factors-and-associated-disorders-a-retrospective-study
#18
Althea D C East-Innis, Kaderina Stylianou, Alexandra Paolino, Jonathan D Ho
BACKGROUND: Acne keloidalis nuchae (AKN) is a chronic scarring folliculitis which usually occurs in young adult males of African descent. Studies have suggested that AKN may be associated with other dermatologic conditions and even general medical disorders. The aim of this study was to identify cutaneous and extracutaneous associated disorders and to examine risk factors in our population for developing AKN. METHODS: The study was a retrospective, descriptive, and analytical study conducted at the Dermatology Outpatient department of the University Hospital of the West Indies...
August 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28658462/isotretinoin-and-timing-of-procedural-interventions-a-systematic-review-with-consensus-recommendations
#19
REVIEW
Leah K Spring, Andrew C Krakowski, Murad Alam, Ashish Bhatia, Jeremy Brauer, Joel Cohen, James Q Del Rosso, Lucia Diaz, Jeffrey Dover, Lawrence F Eichenfield, Geoffrey C Gurtner, C William Hanke, Marla N Jahnke, Kristen M Kelly, Shilpi Khetarpal, Megan A Kinney, Moise L Levy, James Leyden, Michael T Longaker, Girish S Munavalli, David M Ozog, Heidi Prather, Peter R Shumaker, Elizabeth Tanzi, Abel Torres, Mara Weinstein Velez, Abigail B Waldman, Albert C Yan, Andrea L Zaenglein
Importance: The notion that systemic isotretinoin taken within 6 to 12 months of cutaneous surgery contributes to abnormal scarring or delayed wound healing is widely taught and practiced; however, it is based on 3 small case series from the mid-1980s. Objective: To evaluate the body of literature to provide evidence-based recommendations regarding the safety of procedural interventions performed either concurrently with, or immediately following the cessation of systemic isotretinoin therapy...
August 1, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28638180/in-situ-cytokine-expression-and-morphometric-evaluation-of-total-collagen-and-collagens-type-i-and-type-iii-in-keloid-scars
#20
Isabela Rios da Silva, Luciana Colombo Rodrigues da Cunha Tiveron, Marcos Vinicius da Silva, Alberto Borges Peixoto, Carla Aparecida Xavier Carneiro, M A Dos Reis, Pedro Carvalho Furtado, Bárbara Rocha Rodrigues, Virmondes Rodrigues, Denise Bertulucci Rocha Rodrigues
Keloids are characterized by excessive collagen deposition and growth beyond the edges of the initial injury, and cytokines may be related to their formation. The objective of this study was to evaluate the collagen fibers, analyze in situ expression of cytokines in keloid lesions, and compare to the control group. Results showed that there was a predominance of women and nonwhite and direct black ancestry. Keloid showed a significant increase in total and type III collagen. Significantly, the expression of mRNA for TGF-β in keloid was increased, the expressions of IFN-γ, IFN-γR1, and IL-10 were lower, and IFN-γR1 and TNF-α had no statistical difference...
2017: Mediators of Inflammation
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