Causal relationships between skin microbiome and pathological scars: a bidirectional mendelian randomization study.

Skin bacteria infection could be a potential risk factor on wound scar formation, yet the specifics of this relationship are not fully understood. This research investigates the causal relationships between specific skin microbiome and these diseases by using bidirectional Mendelian randomization (MR). This study employed a bidirectional MR analysis using genome-wide association study (GWAS) data to analyze the associations between skin microbiome and pathological scar.

Management of Keloids and Hypertrophic Scars.

Keloid and hypertrophic scars are a result of aberrant wound healing responses within the reticular dermis. They are thought to be secondary to the formation of a disorganized extracellular matrix due to excessive fibroproliferative collagen response. Prevention of these scars focuses on avoiding elective or cosmetic procedures such as piercings in patients at high risk, reducing tension across the lesion, and decreasing the inflammatory response.

Exposure of Primary Human Skin Fibroblasts to Carbon Dioxide-Containing Solution Significantly Reduces TGF-β-Induced Myofibroblast Differentiation In Vitro.

Wound healing as a result of a skin injury involves a series of dynamic physiological processes, leading to wound closure, re-epithelialization, and the remodeling of the extracellular matrix (ECM). The primary scar formed by the new ECM never fully regains the original tissue's strength or flexibility. Moreover, in some cases, due to dysregulated fibroblast activity, proliferation, and differentiation, the normal scarring can be replaced by pathological fibrotic tissue, leading to hypertrophic scars or keloids.

Long-Term Outcome of Anterior Chest Keloid Excision Using Intercostal Artery Perforator Propeller Flaps.

Background: The chest, with its high skin tension, is prone to keloids and has a high relapse rate. Surgical excision of keloids combined with radiation therapy significantly reduces the recurrence rate. For larger chest keloids (3-10 cm), intercostal artery perforator propeller flap can be used to reduce tension.

SDC1 Influences Keloid Fibroblasts Migration and Invasion via Targeting Wnt/β-Catenin Signaling Pathway Mediated EMT.

Keloid is the result of abnormal wound healing, puzzled by the invasive growth and high recurrence rate attributed to its complex pathogenic mechanism. Syndecan1 (SDC1) contributes to regulating cell migration and invasion by activating epithelial-mesenchymal transition (EMT) in tumor and fibrotic disease. Herein, using western blot analysis, the authors assessed the role of SDC1 on EMT in keloid and its underlying mechanism.

Assessment of Treatment Modalities in Patients With Keloids: A Vancouver Scale Comparison.

Background: Various treatment modalities are used to treat keloids. However, a comprehensive assessment comparing the effectiveness of these modalities in terms of patient-reported outcomes is warranted.

Objective: To assess and compare the effectiveness of various treatment modalities for keloids.

The Role of Biomechanical Forces in the Formation and Treatment of Pathological Scars.

Pathological scars, including hypertrophic scar and keloid are the result of excessive tissue repair and are influenced by biomechanical forces like tension, mechanical pressure, and stiffness. These forces significantly impact scar development and progression, affecting wound healing, collagen deposition, and tissue remodeling. Understanding how these mechanical stimuli contribute to scar development is essential for devising effective therapeutic interventions.

Exosome-mediated Advancements in Plastic Surgery: Navigating Therapeutic Potential in Skin Rejuvenation and Wound Healing.

Exosomes, tiny extracellular vesicles derived from various cells such as adipose-derived stem cells, bone marrow-derived mesenchymal stem cells, and human umbilical cord mesenchymal stem cells, exhibit considerable potential in wound healing due to their ability to facilitate cell communication and modulate inflammatory responses. These exosomes contribute positively to collagen synthesis and scar reduction, and have shown efficacy in documented clinical cases of wound improvement. Although research indicates their potential in reducing hypertrophic scars and suppressing keloid fibroblasts, further clinical investigations are warranted.

The Efficacy of Botulinum Toxin Type A (BTA) in the Treatment of Hypertrophic Scars and Keloids: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Hypertrophic scars cause significant physical and emotional discomfort. Botulinum toxin type A (BTA) has shown promising outcomes in reducing scar formation. Research suggested its effectiveness in managing hypertrophic scars and keloids.

A Rare Cutaneous Manifestation of Systemic Sclerosis.

Unlabelled: A 43-year-old male with a history of intravenous drug use and alcohol consumption presented to the emergency department with three-month history of failure to thrive. The patient exhibited a constellation of constitutional symptoms including cough, weight loss, fatigue, decreased appetite, nausea and vomiting. The skin examination revealed multiple subcutaneous hyperpigmented, indurated plaques and nodules on the trunk and arms.

Are symptoms in pathologic scars related to nerve function or density? A scoping review.

Background: Hypertrophic scars and keloids are forms of pathologic scarring that can give rise to pain and pruritus. The link between nerve function and nerve density and the symptoms in pathologic scars (PS) remains unclear.

Objective: We aim to assess current knowledge on nerve function and nerve density in PS, and to explore a possible association between alterations in sensibility/nerve density and pathologic scar symptoms.

An Update on Molecular Mechanisms of Scarring-A Narrative Review.

Fibroblasts, the principal cellular mediators of connective tissue remodeling, play a crucial role in the formation of physiological and pathological scars. Understanding the intricate interplay between fibroblasts and other cellular and molecular components is essential for elucidating the underlying mechanisms driving scar formation. Hypertrophic scars, keloids and atrophic scars arise from dysregulated wound healing processes characterized by persistent inflammation, aberrant collagen deposition, and impaired extracellular matrix remodeling.

The Role of Extracorporeal Shock Wave Therapy in Keloids and Hypertrophic Scars: A Systematic Review.

Keloids and hypertrophic scars are pathological scars that result from a prolonged and aberrant response to wound healing, resulting in raised and thickened skin lesions. Traditional treatments include occlusive dressings, compression therapy, intralesional steroids, and surgical excision with refashioning. Extracorporeal shock wave therapy (ESWT) is a non-invasive treatment method that employs mechanotransduction to stimulate a biological cascade resulting in tissue regeneration.

Efficacy of triamcinolone acetonide combined with botulinum toxin A in the treatment of hypertrophic scars and keloids: A meta-analysis.

Background: This meta-analysis aims to evaluate the efficacy and safety of triamcinolone acetonide (TCA) combined with botulinum toxin type A (BTA) for treating hypertrophic scars and keloids.

Methods: A comprehensive search of randomized controlled trials published before September 2023 was conducted across the Cochrane Library, Embase, PubMed, Web of Science, and CNKI databases. The analysis involved calculating pooled weighted mean difference (WMD), pooled risk ratios (RR), and 95 % confidence intervals (CI).

Solitary Extremity Schwannoma: A 20-Year Review of Outcomes.

Reports on benign peripheral nerve sheath tumour extirpation over the last number of decades describe varying patient outcomes. We present our outcomes following excision of solitary extremity schwannoma over a 20-year period. A regional histopathology review was conducted for, "benign nerve sheath tumour" and schwannoma between 2000 and 2020.

CD74 fibroblasts proliferate upon mechanical stretching to promote angiogenesis in keloids.

The healing of human skin wounds is susceptible to perturbation caused by excessive mechanical stretching, resulting in enlarged scars, hypertrophic scars, or even keloids in predisposed individuals. Keloids are fibro-proliferative scar tissues that extend beyond the initial wound boundary, consisting of the actively progressing periphery and the quiescent center. The stretch-associated outgrowth and enhanced angiogenesis are two features of the periphery of keloids.