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2.
Cureus ; 16(5): e60057, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38854222

RESUMEN

Background The processes of wound healing and scar formation are complex phenomena that are determined by an intricate interplay of molecules and cells. A deviation from the anticipated trajectory of scarring can lead to the formation of hypertrophic scars and keloids. A wide range of therapeutic methodologies have been employed in the treatment of scars. This research paper seeks to enhance patient outcomes and the efficacy of scar repair as a whole by determining the knowledge of scar treatment and implementation in clinical practice in Saudi Arabia and thereby incorporating scientific findings into practical settings. Materials and methods This cross-sectional study, which included 237 participants, aimed to provide descriptive data on the knowledge and common practice of Saudi Arabian healthcare physicians with regard to scar prevention, treatment, and evaluation during the period from November 15, 2023, to December 11, 2023. Results In routine clinical practice, the most commonly employed subjective method for scar assessment is patient and observer scar assessment (162 (68.4%)) while the Modified Vancouver Scar Scale (91 (38.4%)) was commonly used for research purposes. However two-dimensional photography is the most frequently employed objective method in clinical practice (54 (22.8%)) and biomechanical properties (58 (24.5%)) for research purposes. Silicone scar therapy in the form of sheets or gel is the primary preventive measure in the prevention of keloids/hypertrophic scars across various patient populations. Corticosteroid injections and silicone are primary interventions within the initial 18-month period. Conclusion Although significant progress has been made in the field of scar management, standardization of procedures and increased adherence to evidence-based guidelines are still required.

3.
Aesthetic Plast Surg ; 2024 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-38760539

RESUMEN

BACKGROUND: Laser therapy has emerged as a promising treatment modality for improving the appearance and symptoms associated with hypertrophic and keloid scars. In this network meta-analysis, we aimed to evaluate the efficacy of different laser types in treating hypertrophic and keloid scars. METHODS: A comprehensive search of four databases was conducted to identify relevant studies published up until July 2023. Data were extracted from eligible studies and pooled as mean difference (MD) for continuous outcomes and risk ratio (RR) for dichotomous data in a network meta-analysis (NMA) model, using R software. RESULTS: A total of 18 studies, comprising 550 patients, were included in the analysis. Pooling our data showed that fractional carbon dioxide (FCO2) plus 5-fluorouracil (5-FU) was superior to control in terms of Vancouver Scar Scale (VSS), pliability score, and thickness; [MD = - 5.97; 95% CI (- 7.30; - 4.65)], [MD = - 2.68; 95% CI (- 4.03; - 1.33)], [MD = - 2.22; 95% CI (- 3.13; - 1.31)], respectively. However, insignificant difference was observed among FCO2 plus 5-FU compared to control group in terms of erythema, vascularity, redness and perfusion, and pigmentation [MD = - 0.71; 95% CI (- 2.72; 1.30)], [MD = - 0.44; 95% CI (- 1.26; 0.38)], respectively. CONCLUSION: Our NMA found that the FCO2 plus 5-FU was the most effective intervention in decreasing the VSS and thickness, while FCO2 plus CO2 was the most effective intervention in decreasing the pliability score. Further research is needed to determine the optimal laser parameters and long-term efficacy of laser therapy in hypertrophic and keloid scars. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these evidence-based medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

4.
Front Immunol ; 13: 883239, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35711461

RESUMEN

Inflammation plays an active role during the wound healing process. There is a direct association between the extent of injury as well as inflammation and the amount of subsequent cutaneous scarring. Evidence to date demonstrates that high levels of inflammation are associated with excessive dermal scarring and formation of abnormal pathological scars such as keloids and hypertrophic scars. In view of the multiple important cell types being involved in the inflammatory process and their influence on the extent of scar formation, many scar therapies should aim to target these cells in order to control inflammation and by association help improve scar outcome. However, most current treatment strategies for the management of a newly formed skin scar often adopt a watch-and-wait approach prior to commencing targeted anti-inflammatory therapy. Moreover, most of these therapies have been evaluated in the remodelling phase of wound healing and the evaluation of anti-inflammatory treatments at earlier stages of healing have not been fully explored and remain limited. Taken together, in order to minimise the risk of developing a poor scar outcome, it is clear that adopting an early intervention prior to skin injury would be optimal, however, the concept of pre-emptively priming the skin prior to injury has not yet been thoroughly evaluated. Therefore, the aim of this review was to evaluate the available literature regarding scar therapies that aim to target inflammation which are commenced prior to when a scar is formed or immediately after injury, with a particular focus on the role of pre-emptive priming of skin prior to injury in order to control inflammation for the prevention of poor scarring outcome.


Asunto(s)
Cicatriz Hipertrófica , Queloide , Enfermedades de la Piel , Cicatriz Hipertrófica/metabolismo , Cicatriz Hipertrófica/prevención & control , Humanos , Inflamación/patología , Queloide/patología , Piel/patología , Enfermedades de la Piel/patología , Cicatrización de Heridas
5.
Stem Cells Dev ; 31(19-20): 579-592, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35262397

RESUMEN

Tumors were characterized as nonhealing wounds by Virchow in 1858 and Dvorak in 1986. Since then, researchers have analyzed tumors from a new perspective. The parallels between tumorigenesis and physiological wound healing can provide a new framework for developing antitumor therapeutics. One commonality between tumors and wounds is the involvement of the stromal environment, particularly adipose stromal/stem cells (ASCs). ASCs exhibit dual functions, in which they stimulate tumor progression and assist in tissue repair and regeneration. Numerous studies have focused on the role of ASCs in cancer and wound healing, but none to date has linked age, cancer, and wound healing. Furthermore, very few studies have focused on the role of donor-specific characteristics of ASCs, such as age and their role in facilitating ASC behavior in cancer and wound healing. This review article is designed to provide important insights into the impact of donor age on ASC tumor and wound response and their role in facilitating ASC behavior in cancer and wound healing.


Asunto(s)
Tejido Adiposo , Neoplasias , Humanos , Cicatrización de Heridas/genética , Células del Estroma , Células Madre
6.
Cureus ; 13(1): e12999, 2021 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-33542883

RESUMEN

Keloid scars are a common yet poorly understood complication of wound healing that can cause a diminished quality of life. Currently, there is little agreement amongst the medical community regarding the best treatment modality for keloids. For this reason, we have created an updated review of the most successful combination therapies for keloid scars and compared their efficacy based on rates of recurrence following treatment. Additionally, these combination therapies have been compared with intralesional triamcinolone acetonide corticosteroid (TAC), which is considered the mainstay monotherapy for keloids. All combination therapies included in our review were shown to produce superior outcomes than TAC monotherapy. We have also found that certain combination therapies are known to produce superior results when used in specific anatomic locations. Intralesional TAC plus intralesional cryotherapy appeared to have the most promising results for non-auricular keloids, and the authors suggest considering this as a first-line treatment. Additionally, the use of surgical excision plus compression therapy achieved superior results for auricular keloids and should be considered first-line for keloids in these locations.

7.
Front Immunol ; 11: 552205, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33117341

RESUMEN

Mast cells (MCs) are an important immune cell type in the skin and play an active role during wound healing. MCs produce mediators that can enhance acute inflammation, stimulate re-epithelialisation as well as angiogenesis, and promote skin scarring. There is also a link between MCs and abnormal pathological cutaneous scarring, with increased numbers of MCs found in hypertrophic scars and keloid disease. However, there has been conflicting data regarding the specific role of MCs in scar formation in both animal and human studies. Whilst animal studies have proved to be valuable in studying the MC phenomenon in wound healing, the appropriate translation of these findings to cutaneous wound healing and scar formation in human subjects remains crucial to elucidate the role of these cells and target treatment effectively. Therefore, this perspective paper will focus on evaluation of the current evidence for the role of MCs in skin scarring in both animals and humans in order to identify common themes and future areas for translational research.


Asunto(s)
Cicatriz/inmunología , Inflamación/inmunología , Mastocitos/inmunología , Piel/inmunología , Animales , Modelos Animales de Enfermedad , Fibrosis , Humanos , Investigación Biomédica Traslacional , Cicatrización de Heridas
8.
Biomedicines ; 8(7)2020 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-32605309

RESUMEN

As a part of an abnormal healing process of dermal injuries and irritation, keloid scars arise on the skin as benign fibroproliferative tumors. Although the etiology of keloid scarring remains unsettled, considerable recent evidence suggested that keloidogenesis may be driven by epigenetic changes, particularly, DNA methylation. Therefore, genome-wide scanning of methylated cytosine-phosphoguanine (CpG) sites in extracted DNA from 12 keloid scar fibroblasts (KF) and 12 control skin fibroblasts (CF) (six normal skin fibroblasts and six normotrophic fibroblasts) was conducted using the Illumina Human Methylation 450K BeadChip in two replicates for each sample. Comparing KF and CF used a Linear Models for Microarray Data (Limma) model revealed 100,000 differentially methylated (DM) CpG sites, 20,695 of which were found to be hypomethylated and 79,305 were hypermethylated. The top DM CpG sites were associated with TNKS2, FAM45B, LOC723972, GAS7, RHBDD2 and CAMKK1. Subsequently, the most functionally enriched genes with the top 100 DM CpG sites were significantly (p ≤ 0.05) associated with SH2 domain binding, regulation of transcription, DNA-templated, nucleus, positive regulation of protein targeting to mitochondrion, nucleoplasm, Swr1 complex, histone exchange, and cellular response to organic substance. In addition, NLK, CAMKK1, LPAR2, CASP1, and NHS showed to be the most common regulators in the signaling network analysis. Taken together, these findings shed light on the methylation status of keloids that could be implicated in the underlying mechanism of keloid scars formation and remission.

9.
Rev. cuba. med. mil ; 49(1): e374, ene.-mar. 2020. fig
Artículo en Español | LILACS, CUMED | ID: biblio-1126690

RESUMEN

Introducción: La cicatriz queloide forma parte de las cicatrices patológicas por exceso; es una afección que se caracteriza por el depósito excesivo de colágeno en la dermis y tejido celular subcutáneo. El proceso por el cual se desarrolla no es del todo conocido, es más frecuente en la raza negra y afecta en igual proporción a hombres que mujeres. Objetivo: Informar a la comunidad médica sobre experiencia en el manejo y tratamiento con dos pacientes portadores de lesiones queloides de gran tamaño. Caso clínico: Se presentan dos pacientes con cicatriz queloide gigante a partir de ambos lóbulos auriculares y cuello anterior; se expone la conducta terapéutica basada en la combinación de tres modalidades de tratamiento: cirugía; infiltración con acetónido de triamcinolona, 1 ml (40 mg) desde el día del acto quirúrgico, se repitió cada 15 días; junto a presoterapia con crema esteroidea. Conclusiones: Aunque no existe un tratamiento ideal, se debe tener en cuenta al tratar esta enfermedad si se está ante una lesión recidivante, el tiempo de aparición de la tumoración, sus características clínicas; de seleccionarse el tratamiento quirúrgico como opción terapéutica, debe acompañarse de otras modalidades de tratamiento(AU)


Introduction: The keloid scar is part of the pathological scars by excess, is a condition characterized by the excessive deposit of collagen in the dermis and subcutaneous cell tissue, the process by which it develops is not entirely known, it is more frequent in the black race, affects in equal proportion men than women. Objective: To inform the medical community of the experience in handling and treating two patients with large keloid lesions. Clinical case: Two patients with giant keloid scars are presented from both earlobes and anterior neck where therapeutic behavior based on the combination of three treatment modalities is exposed: surgery, triamcinolone acetonide 1 ml (40mg) infiltration beginning on the first day after surgery, repeated every 15 days and pressotherapy with steroid cream. Conclusions: Although there is no ideal treatment, it should be taken into account when treating this disease if we are facing a recurrent injury, the time of onset of the tumor, its clinical characteristics, surgical treatment should be selected as a therapeutic option, accompanied by other forms of treatment(AU)


Asunto(s)
Humanos , Masculino , Adulto , Cirugía General/organización & administración , Triamcinolona , Triamcinolona Acetonida , Cicatriz/epidemiología , Queloide
10.
J Cosmet Dermatol ; 19(2): 270-277, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31904191

RESUMEN

BACKGROUND: Hypochlorous acid (HOCl), a naturally occurring molecule produced by the immune system, is highly active against bacterial, viral, and fungal microorganisms. Moreover, HOCl is active against biofilm and increases oxygenation of the wound site to improve healing. Natural HOCl is unstable; through technology, it can be stabilized into an effective topical antiseptic agent. AIM: This paper focuses on the use of topical stabilized HOCl in wound and scar management for pre-, peri-, and postprocedures-including its ability to reduce the occurrence hypertrophic scars and keloids. The role of the product in other skin conditions is beyond the scope of this article. METHODS: A panel comprising clinicians with experience in cosmetic and surgical procedures met late 2018 to discuss literature search results and their own current clinical experience regarding topical stabilized HOCl. The panel of key opinion leaders in dermatology and plastic surgery defined key insights and consensus statements on the direction of use for the product. RESULTS: Topical stabilized HOCl provides an optimal wound healing environment and, when combined with silicone, may be ideal for reducing scarring. Additionally, in contrast to chlorhexidine, HOCl, used as an antiseptic skin preparation, raises no concerns of ocular- or ototoxicity. CONCLUSIONS: For wound care and scar management, topical stabilized HOCl conveys powerful microbicidal and antibiofilm properties, in addition to potency as a topical wound healing agent. It may offer physicians an alternative to other less desirable wound care measures.


Asunto(s)
Antiinfecciosos Locales/administración & dosificación , Cicatriz Hipertrófica/prevención & control , Ácido Hipocloroso/administración & dosificación , Queloide/prevención & control , Procedimientos de Cirugía Plástica/efectos adversos , Infección de la Herida Quirúrgica/tratamiento farmacológico , Administración Cutánea , Antiinfecciosos Locales/efectos adversos , Antiinfecciosos Locales/química , Biopelículas/efectos de los fármacos , Cicatriz Hipertrófica/etiología , Humanos , Ácido Hipocloroso/efectos adversos , Ácido Hipocloroso/química , Queloide/etiología , Atención Perioperativa/normas , Periodo Perioperatorio , Nivel de Atención , Infección de la Herida Quirúrgica/etiología , Cicatrización de Heridas/efectos de los fármacos
11.
J Clin Aesthet Dermatol ; 13(10): 12-16, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33584951

RESUMEN

BACKGROUND: Surgical treatment of keloid scars is associated with an approximately 70% recurrence rate at the excision site. OBJECTIVE: We sought to assess keloid recurrence rates when superficial radiation therapy (SRT) was applied following surgical excision. METHODS: Medical records were reviewed of subjects treated for keloid scars followed by SRT (SRT-100™; Sensus Healthcare, Boca Raton, Florida) using a biologically effective dose (BED) of 30Gy and for whom the required retrospective data was available. Eligible subjects (N=61) were treated for 96 keloid scars with SRT. Subjects were male (48%) and female (52%) with a mean age of 38.87 years. Subjects were treated for ≥1 keloid scars following removal by sutured excision (93%) or tangential excision with secondary intention technique (7%). Almost all subjects (98%) received BED 30Gy with irradiation scheme of three 6Gy SRT treatments on Days 1, 2 and 3 following surgery. Mean energy of 100KV (73%) or 70KV (27%) were applied. RESULTS: Ten treated keloidectomy sites (10.4%) had recurrences (i.e., presence of any new tissue growth on the surgical scar) within 12 months increasing to 11 (12.7%) at 18 months. Kaplan-Meier survival probability cure rate was 85.6% from 24 months post-SRT treatment onwards. Transient hyperpigmentation was the most frequent adverse event and there were no malignancies in the treatment area during follow-up evaluations. CONCLUSIONS: SRT with a BED value of 30 Gy delivered to keloidectomy excision sites immediately following excision was well-tolerated and resulted in markedly fewer long-term recurrences than reported following keloidectomy alone. Most keloid scar recurrences occurred within one year. There were no malignancies during follow-up evaluations.

12.
Arch Dermatol Res ; 311(9): 711-719, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31385019

RESUMEN

We conducted this experimental study to analyze the relationship between sphingosine-1-phosphate (S1P)-induced mitogen-activated protein (MAP) kinase pathways and keloid formation. We collected samples of the normal tissue and the keloid tissue from 10 normal healthy individuals and 12 patients with keloid scars, respectively. Then, we compared the level of sphingosine-1-phosphate receptor (S1PR1/S1PR2) mRNA/protein expression between the normal tissue and the keloid tissue. Moreover, we also compared the level of S1PR protein expression, that of S1P-induced COL1A1 (collagen Type I, α-1 chain) expression, that of S1P-induced JNK/ERK phosphorylation, that of S1P-induced COL1A1 expression following the treatment with 30 µM PD98059 (ERK inhibitor) or 30 µM SP600125 (JNK inhibitor) and that of S1P-induced COL1A1 expression following the treatment with W146 (S1PR1 inhibitor) or JTE013 (S1PR2 inhibitor) between the normal fibroblasts and the keloid fibroblasts. We found that the level of S1PR1/S1PR2 mRNA/protein expression was significantly higher in the keloid tissue as compared with the normal tissue. Our results also showed that the level of S1P-induced COL1A1 expression and that of S1P-induced JNK/ERK phosphorylation were significantly higher in the keloid fibroblasts as compared with the normal ones (P < 0.05). Furthermore, there were significant decreases in the level of S1P-induced COL1A1 expression when the keloid fibroblasts were treated with 30 µM SP600125 or 30 µM PD98059 and that of S1P-induced COL1A1 expression when the treated with 100 nM W146 or 100 nM JTE013 (P < 0.05). Our results indicate that S1P-induced signal transduction is associated with increased collagen synthesis via S1PR-mediated signaling pathways in the keloid tissue.


Asunto(s)
Colágeno Tipo I/metabolismo , Queloide/patología , Lisofosfolípidos/metabolismo , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Proteínas Quinasas Activadas por Mitógenos/metabolismo , Esfingosina/análogos & derivados , Adulto , Anilidas/farmacología , Antracenos/farmacología , Línea Celular , Cadena alfa 1 del Colágeno Tipo I , Femenino , Fibroblastos , Flavonoides/farmacología , Humanos , Queloide/tratamiento farmacológico , Masculino , Persona de Mediana Edad , Proteínas Quinasas Activadas por Mitógenos/antagonistas & inhibidores , Organofosfonatos/farmacología , Fosforilación/efectos de los fármacos , Pirazoles/farmacología , Piridinas/farmacología , Transducción de Señal/efectos de los fármacos , Esfingosina/metabolismo , Receptores de Esfingosina-1-Fosfato/antagonistas & inhibidores , Receptores de Esfingosina-1-Fosfato/metabolismo , Adulto Joven
14.
Burns Trauma ; 7: 5, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30783604

RESUMEN

BACKGROUND: Keloids are the result of abnormal wound healing and often are subject to infections and recurrent inflammation. We present a study conducted with a 1470 nm diode laser using an intralesional optical fiber device for the treatment of inflamed keloid scars. We evaluate its efficacy as a novel alternative method to decrease keloid infection and inflammation. METHODS: The patients who underwent 1470 nm laser treatment from February 2016 to February 2018 at the plastic and reconstructive surgery department of the Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University with keloid accompanying serious local infection and fester were included. Patients took curative effect evaluation before and 1 year after the treatment. The test items included infection frequency in each year; pain, by visual analogue scale (VAS); itch, using VAS; quality of life (QOL), using QOL scale; and blood supply, using PeriCam PSI. RESULTS: A total of 19 patients (mean age 35.21 years, range 11-66) with history of inflamed keloids with episodes of infection or abscess were enrolled. Patients underwent to a 1470 nm laser therapy for average of 1.16 times. After treatment, infection frequency and blood supply in keloids were reduced (p < 0.001). Pain, itching, and QOL were improved (p < 0.001). CONCLUSION: The present study shows that 1470 nm fiber laser treatment could improve inflamed keloids fairly well by decreasing inflammation, and a relative stabilization of collagen composition. Therefore, it is an effective minimally invasive scar therapy, but further studies are essential to confirm the present results.

15.
Actas Dermosifiliogr (Engl Ed) ; 109(10): 858-867, 2018 Dec.
Artículo en Inglés, Español | MEDLINE | ID: mdl-30266385

RESUMEN

Absorption of topical products through the epidermis is limited by the skin's barrier function. Numerous techniques and agents such as microneedling, dermabrasion, radiofrequency, and lasers have been used to increase penetration within an approach known as transdermal drug delivery. One of these techniques is laser-assisted drug delivery (LADD), which often uses ablative fractional lasers (CO2 or erbium:YAG lasers) because of their capacity to produce microscopic ablated channels. The parameters in LADD need to be adjusted to the patient, the skin condition and its location, and the drug. LADD has been used with various topical products, such as corticosteroids, photosensitizers, and immunotherapy agents (imiquimod or 5-fluorouracil) to treat numerous conditions, including scars, nonmelanoma skin cancer, and photodamage. LADD is a promising technique that enhances the absorption of topical molecules while adding the synergic effect of the laser.


Asunto(s)
Sistemas de Liberación de Medicamentos/instrumentación , Láseres de Gas , Láseres de Estado Sólido , Absorción Cutánea/efectos de la radiación , Administración Cutánea , Cicatriz/terapia , Humanos , Selección de Paciente , Fotoquimioterapia/instrumentación , Fotoquimioterapia/métodos
16.
Burns ; 44(3): 582-588, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29089212

RESUMEN

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. In addition, expression of α1-adrenoceptors was greater on dermal nerve fibres, blood vessels and fibroblasts in keloid scars than in either burn scars or unscarred skin. These findings suggest that increased vascular expression of α1-adrenoceptors could alter circulatory dynamics both in burn and keloid scars. In addition, the augmented expression of α1-adrenoceptors in keloid tissue may contribute to processes that produce or maintain keloid scars, and might be a source of the uncomfortable sensations often associated with these scars.


Asunto(s)
Vasos Sanguíneos/metabolismo , Quemaduras/metabolismo , Fibroblastos/metabolismo , Queloide/metabolismo , Fibras Nerviosas/metabolismo , Receptores Adrenérgicos alfa 1/metabolismo , Piel/metabolismo , Adulto , Quemaduras/complicaciones , Cicatriz/etiología , Cicatriz/metabolismo , Dermis/irrigación sanguínea , Dermis/inervación , Dermis/metabolismo , Femenino , Humanos , Inmunohistoquímica , Masculino , Persona de Mediana Edad , Piel/irrigación sanguínea , Piel/inervación , Regulación hacia Arriba , Adulto Joven
17.
Scars Burn Heal ; 2: 2059513116642090, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-29799577

RESUMEN

The formation of a wide range of excessive scars following various skin injuries is a natural consequence of healing. Scars resulting from surgery or trauma affect approximately 100 million people per annum in the developed world and can have profound physical, aesthetic, psychological and social consequences. Thus, scar treatment is a priority for the plastic surgeon. We aim to explore new approaches to the management of such scarring. The senior authors current use of laser technology, chemotherapeutic agents, pharmacotherapy and cryosurgery will be reviewed. This is placed in the context of the current literature and evidence base and is illustrated with case studies, starting with burns scars in part I, and focusing on keloid and hypertrophic scars in part II, acne scars in part III and finally pigmented scars in part IV. In Part I we focus on burns scar treatment with fractional ablative 10,600 nm wavelength carbon dioxide (CO2) laser therapy.

18.
Case Rep Dermatol ; 7(2): 156-60, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26351423

RESUMEN

Keloid scars result from an abnormal healing response to cutaneous injury or inflammation that extends beyond the borders of the original wound. Spontaneous keloid scars forming in the absence of any previous trauma or surgical procedure are rare. Certain syndromes have been associated with this phenomenon, and few reports have discussed the evidence of single spontaneous keloid scar, which raises the question whether they are really spontaneous. Here, we present a 27-year-old mentally retarded single female with orbital hypertelorism, broad nasal bridge, repaired cleft lip and high-arched palate who presented with progressive multiple spontaneous keloid scars in different parts of her body which were confirmed histologically by the presence of typical keloidal collagen. This report supports the fact that keloid scars can appear spontaneously and are possibly linked to a genetic factor. Furthermore, it describes a new presentation of spontaneous keloid scars in the form of multiple large lesions in different sites of the body.

19.
Cryobiology ; 71(1): 146-50, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25920961

RESUMEN

BACKGROUND: Intralesional (IL) cryotherapy is a new technique for the treatment of keloid scars, in which the scar is frozen from inside. Two cryodevices are available, which were recently evaluated. Both devices showed promising results, but differed in clinical outcome. To explain these differences, more understanding of the working mechanism of both devices is required. OBJECTIVE: This experimental study was designed to investigate and compare the thermal behavior of an argon gas- and a liquid nitrogen-based device. Thermal behavior constitutes: (1) minimum tissue temperature (°C), (2) the freezing rate (°C/min). The thermal behavior was measured inside and on the outer surface of the scar. Both devices were tested ex vivo and in vivo. RESULTS: Ex vivo, when determining the maximum freezing capacity, the argon gas device showed a higher end temperature compared to the liquid nitrogen device (argon gas: -120°C, liquid nitrogen: -140°C) and a faster freezing rate (argon gas: -1300°C/min, liquid nitrogen: -145°C/min). In vivo, measured inside the keloid, the argon gas device showed a lower end temperature than the liquid nitrogen device (argon gas: -36.4°C, liquid nitrogen: -8.1°C) and a faster freezing rate (argon gas: -14.7°C/min, liquid nitrogen: -5°C/min). The outer surface of the scar reached temperatures below -20°C with both devices as measured with the thermal camera. CONCLUSION: In conclusion, the argon gas device displayed a lower end temperature and a faster freezing rate in vivo compared to the liquid nitrogen device. Although this resulted in lower recurrence rates for the argon gas device, more hypopigmentation was seen compared to the liquid nitrogen device following treatment. Finally, the low outer surface temperatures measured with both devices, suggest that some hypopigmentation following treatment is inevitable.


Asunto(s)
Argón/uso terapéutico , Crioterapia/instrumentación , Queloide/terapia , Nitrógeno/uso terapéutico , Albinismo Oculocutáneo/etiología , Crioterapia/efectos adversos , Congelación , Humanos , Hipopigmentación/etiología , Resultado del Tratamiento
20.
Rev. cuba. med. mil ; 44(1)ene.-mar. 2015. ilus
Artículo en Español | CUMED | ID: cum-66966

RESUMEN

Paciente masculino de 47 años de edad, con antecedentes de hipertensión arterial. En mayo de 2009 sufrió un accidente en su hogar con gasolina inflamada, lo que le produjo lesiones en cara, cuello anterior, tronco y extremidades. Estas alcanzaron el 67,7 por ciento de la superficie corporal total, de ellas el 51,3 por ciento fueron quemaduras hipodérmicas y el 16,4 por ciento dérmicas AB, para un índice de gravedad de 59,5 y pronóstico de vida de crítico extremo. Se decide ingreso en régimen de terapia intensiva del Servicio de Caumatología del Hospital Militar Central Dr Luis Díaz Soto, donde se le realizaron varios tratamientos quirúrgicos. Tuvo una estadía hospitalaria de 98 días. Al alta quedaron como secuelas posquemaduras, múltiples cicatrices hipertróficas y queloideas en todo su cuerpo, sindactilia en mano izquierda y microstoma. Regresó a nuestro servicio a los 2 años y 6 meses para tratamiento reconstructivo de cicatriz queloidea que interesaba mentón y labio superior, así como del microstoma. Se realizó la reconstrucción de la zona afectada mediante la combinación de plastias locales y a distancia. Se obtuvo satisfactorios resultados estéticos y funcionales, lo que demuestra que el tratamiento integral del paciente quemado garantiza la sobrevida, el control de la sepsis, la mejoría estética, funcional y de la esfera psíquica(AU)


A 47 year-old male patient with a history of hypertension suffered an inflamed gasoline accident at home in May 2009. This accident produced lesions on his face, anterior neck, trunk and limps. These burns reached 67.7 percent of the total body surface area, out of which 51.3 percent were hypodermic burns, and 16.4 percent dermal AB, for a 59.5 severity index and prognosis of extremely critical. His admission is decided in intensive care regimen of the Burn Therapy Service at the Central Military Hospital where various surgical treatments were performed. He had a hospital stay of 98 days. At discharge sequelae were left as post burns, multiple keloids and hypertrophic scars all over his body, syndactyly microstoma in his left hand. The patient returned to our service at 2 years and 6 months for reconstructive treatment of keloid scar affecting his chin and upper lip, and the microstoma. Reconstruction of the affected area was performed by combining local and distance plasty. Satisfactory aesthetic and functional results were obtained, demonstrating that comprehensive treatment of burn patients guarantees survival, sepsis control, aesthetic, functional and psychic sphere improvement(AU)


Asunto(s)
Humanos , Masculino , Adulto , Quemaduras/diagnóstico , Quemaduras/terapia , Choque Traumático/diagnóstico , Queloide/cirugía , Procedimientos de Cirugía Plástica , Sindactilia/cirugía
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