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1.
Handb Exp Pharmacol ; 263: 161-170, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32728993

RESUMEN

When one considers the avalanche of new indications and uses for botulinum toxins, it is truly surprising that this has all happened in such a short time. And the safety and dependability of these products are profound, when used appropriately. There is still much to be discovered about the potential of this agent when you contemplate the profound non-cosmetic benefits reported by clinicians and scientists from around the world. The mechanism of action has been studied in depth, and yet the benefits appreciated by people with chronic migraine or major depressive disorder, for instance, are unlikely to be explained by our current mechanistic understanding. Given that these toxins control acetylcholine at the motor end plates, and given that acetylcholine is central to practically every cell in the body, it will not be surprising to find that botulinum toxin researchers will be enjoying many decades of fruitful studies. The advent of the non-surgical aesthetic physician has helped push the clinical utilization of botulinum toxins well beyond its original adoption by oculoplastic surgeons in their patients with blepharospasm. We can expect that the next edition of this book to have a dozen or more new indications which will surprise us all.


Asunto(s)
Toxinas Botulínicas Tipo A , Técnicas Cosméticas , Trastorno Depresivo Mayor , Hiperhidrosis , Envejecimiento de la Piel , Estética , Humanos , Hiperhidrosis/tratamiento farmacológico
2.
J Am Acad Dermatol ; 74(5): 924-30, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26803346

RESUMEN

BACKGROUND: Perioral wrinkling is commonly reported among older adults, but its objective evaluation and causes remain poorly understood. OBJECTIVE: We sought to develop a photonumeric scale for perioral wrinkling and to elucidate contributory lifestyle factors. METHODS: In this cross-sectional study, we recruited participants for facial photographs and a survey. A gender-specific photonumeric scale for perioral wrinkling was developed and used by 3 graders to evaluate participant photographs. Scores and survey responses were used to create a multiple regression model to predict perioral wrinkling. RESULTS: In all, 143 participants aged 21 to 91 years were enrolled. Intraclass correlation coefficient values for interrater and intrarater reliability were high (>0.8) across 2 trials and 3 graders. A multiple regression model for prediction of perioral wrinkling severity included age, gender, and years of smoking as variables. LIMITATIONS: The study was limited by sample size and a predominantly Caucasian study population. CONCLUSION: We created a photonumeric scale that accounts for gender differences in perioral wrinkling and highlighted contributory variables to photoaging in this anatomical location.


Asunto(s)
Envejecimiento/fisiología , Estilo de Vida , Fotograbar , Envejecimiento de la Piel/fisiología , Fumar/efectos adversos , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Intervalos de Confianza , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Boca , Análisis Multivariante , Análisis de Regresión , Factores de Riesgo , Adulto Joven
3.
Aesthetic Plast Surg ; 40(4): 466-74, 2016 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-27178568

RESUMEN

INTRODUCTION: Crows' feet wrinkles are caused by the action of the orbicularis oculi muscle on overlying skin. Treatment options range from botulinum toxin to a multitude of surgical methods. We first described our technique in 2003 and refined it in 2006. We highlight the evolution of our technique and look at our results to assess the effectiveness of our technique. OBJECTIVE: The aim of this article is to show our experience of 13 years in 134 patients with our technique of orbicularis oculi myectomy. METHODS: From September 2000 to July 2013, we operated on 134 patients with an age range of 28-77 years. Of these patients, 104 had myectomies via lifting and 22 via a blepharoplasty approach. Five patients had myectomies for treatment of blepharospasm and a further three patients to restore symmetry in facial palsy. An evaluation of the results was performed by two medical students. RESULTS: Our results showed reduction of the wrinkles in all cases. For the statistical analysis the Wilcoxon test was performed. The p value was less than 0.001 showing a significant reduction of crows' feet wrinkles in both sides when the orbicularis myectomy was performed, via blepharoplasty or lifting. For myectomy performed for blepharospasm or facial palsy, the statistical analysis was not done due to the low numbers. CONCLUSION: In the appropriate patient, orbicularis oculi myectomy is an effective and long-term treatment for crows' feet wrinkles with a low risk of complications and high patient satisfaction. 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 .


Asunto(s)
Blefaroespasmo/cirugía , Músculos Faciales/cirugía , Músculos Oculomotores/cirugía , Ritidoplastia/métodos , Adulto , Anciano , Blefaroespasmo/tratamiento farmacológico , Toxinas Botulínicas/administración & dosificación , Estudios de Cohortes , Estética , Músculos Faciales/efectos de los fármacos , Humanos , Persona de Mediana Edad , Músculos Oculomotores/efectos de los fármacos , Estudios Retrospectivos , Medición de Riesgo , Envejecimiento de la Piel , Cirugía Plástica/métodos , Resultado del Tratamiento
4.
Toxicon ; 107(Pt A): 120-8, 2015 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-26368007

RESUMEN

There are a multitude of uses for BoNT in the aesthetic realm. Efficacy has been shown in softening glabellar creases, crows feet, forehead rhytides, and in correcting facial asymmetries, including mild eyelid ptosis. Facial shape can be altered through injections of BoNT into masseter, and smiles can be altered with BoNT. Clinical examples of the above will be shown, as well as adverse outcomes with inaccurate injection techniques.


Asunto(s)
Toxinas Botulínicas/uso terapéutico , Técnicas Cosméticas , Blefaroptosis/tratamiento farmacológico , Estética , Cara , Asimetría Facial/tratamiento farmacológico , Humanos , Envejecimiento de la Piel/efectos de los fármacos
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