Female Pattern Hair Loss: a clinical and pathophysiological review

AbstractFemale Pattern Hair Loss or female androgenetic alopecia is the main cause of hair loss in adult women and has a major impact on patients' quality of life. It evolves from the progressive miniaturization of follicles that lead to a subsequent decrease of the hair density, leading to a non-scarring diffuse alopecia, with characteristic clinical, dermoscopic and histological patterns. In spite of the high frequency of the disease and the relevance of its psychological impact, its pathogenesis is not yet fully understood, being influenced by genetic, hormonal and environmental factors. In addition, response to treatment is variable. In this article, authors discuss the main clinical, epidemiological and pathophysiological aspects of female pattern hair loss

Upper Extremity Wounds Treated with Biodegradable Temporizing Matrix versus Collagen-Chondroitin Silicone Bilayer

Abstract Objective This study aims to compare outcomes between Novosorb Biodegradable Temporizing Matrix (BTM) and Integra collagen-chondroitin silicone for upper-extremity wound reconstruction. Methods This retrospective study analyzed adult patients who underwent wound reconstruction with either BTM or Integra at our institution between 2015 and 2020. Results Forty-eight patients were included: 31 (64.6%) BTM and 17 (35.4%) Integra. Mean age was 44.0 (range: 18–68) years. Age, race, sex, smoking, comorbidities, and defect size were similar between groups. Wound etiologies included 12 (25.0%) burn, 22 (45.8%) trauma, and others. Median template size was 133 cm2 for BTM and 104 cm2 for Integra (p = 0.526). Skin grafting was performed after 14 (45.2%) and 14 (82.4%) wounds treated with BTM and Integra, respectively (p = 0.028). Template complications of infection and dehiscence were comparable. Skin-graft complications occurred in five (35.7%) and three (21.4%) wounds in BTM and Integra, respectively (p = 0.031). Skin-graft failure rates were comparable (p = 0.121). Mean number of secondary procedures required after template placement was higher in the Integra group (BTM, 1.0; Integra, 1.9; p = 0.090). Final healing was achieved in 17 (54.8%) BTM and 11 (64.7%) Integra wounds (p = 0.694). Median time to healing was 4.1 months after BTM and 2.6 months after Integra placement (p = 0.014). Conclusion Compared with Integra, BTM achieved comparable wound healing and complication rates. Fewer secondary procedures and skin grafts were observed in BTM wounds, likely as a result of the coronavirus disease 2019 pandemic. At our institution, 100 cm2 of product costs $850 for BTM and$3,150 for Integra, suggesting BTM as an economical alternative to fulfill the high functional and aesthetic requirements of upper-extremity wounds.</jats:p

Labiaplasty: Analysis of the National Surgical Quality Improvement Program Database

Abstract Background Labiaplasty is an increasingly popular procedure performed for both cosmetic and pathologic etiologies. Questions have been raised regarding the efficacy of the procedure, especially for cosmetic etiologies. Objectives The aim of this study was to examine the complication profiles of labiaplasties for both cosmetic and pathologic etiologies. Methods The 2005 to 2017 National Surgical Quality Improvement Program database was analyzed for patients who, according to the relevant Current Procedural Terminology code, had undergone labiaplasties. Our cohort was further separated into cosmetic and pathologic groups based on International Classification of Diseases codes. Information was collected on patient demographic characteristics, patient comorbidities, and operative variables. Outcomes of interest included surgical complications and delayed length of stay (DLOS). A univariate analysis and multivariate logistic regression were applied to determine statistically significant predictors of our outcomes of interest for both etiologies. Results There were 640 patients in the cosmetic cohort and 1919 patients in the pathologic cohort. There were no significant differences in rates of surgical complications between the 2 groups, but there was a statistically significant increase in length of stay for the pathologic group. Univariate analysis revealed operative time and plastic surgeon specialty to be predictive of DLOS in the cosmetic cohort. No covariates were implicated with multivariate analysis for either surgical complications or for DLOS in the cosmetic cohort. Conclusions Our findings suggest that cosmetic labiaplasty is a safe and efficacious procedure with low complication rates and no predictors of adverse outcomes. Level of Evidence: 4 </jats:sec

Patients with MCI and N400 or P600 abnormalities are at very high risk for conversion to dementia

OBJECTIVE: We sought cognitive event-related potential (ERP) biomarkers of disease progression and subsequent conversion to dementia in mild cognitive impairment (MCI). BACKGROUND: Two ERP components, the P600 and N400, are sensitive to abnormal episodic/declarative memory and semantic processing. When congruous category-exemplars are repeated, smaller P600s (relative to initial presentation) are normally elicited. Repetitions of semantically incongruous words yield smaller N400 amplitude. In mild Alzheimer disease (AD), abnormalities of both the N400 and P600 repetition effects are present, suggesting a wide-spread failure of synaptic plasticity. METHODS: Patients with amnestic MCI (n = 32) were longitudinally studied annually with an ERP paradigm in which semantically congruous (50%) and incongruous target words are repeated 10 to 140 seconds after initial presentation. ERP data were analyzed to contrast MCI-to-AD converters (within 3 years) vs nonconverters, using split-plot analyses of variance. RESULTS: A statistically significant P600 congruous word repetition effect was found only in the nonconverter group (F = 9.9, p = 0.005 vs MCI converters). This effect correlated with verbal memory measures. Repetition of incongruous words produced a significant N400 amplitude attenuation (across right-hemisphere sites) in nonconverters, but not in converters. Patients with MCI with abnormal/reduced N400 or P600 word repetition effects had an 87 to 88% likelihood of dementia within 3 years while those with normal/spared N400 and P600 repetition effects had only an 11 to 27% likelihood. CONCLUSIONS: Abnormalities of the P600 or N400 in mild cognitive impairment are associated with an increased risk of subsequent conversion to Alzheimer disease (AD). These event-related potential components may offer useful biomarkers for the detection and staging of very early AD