Dermatología en Costa Rica

Thursday, September 30, 2021

Non-invasive diagnostic tool for Parkinson’s disease by sebum RNA profile with machine learning

Abstract

Parkinson's disease (PD) is a progressive neurodegenerative disease presenting with motor and non-motor symptoms, including skin disorders (seborrheic dermatitis, bullous pemphigoid, and rosacea), skin pathological changes (decreased nerve endings and alpha-synuclein deposition), and metabolic changes of sebum. Recently, a transcriptome method using RNA in skin surface lipids (SSL-RNAs) which can be obtained non-invasively with an oil-blotting film was reported as a novel analytic method of sebum. Here we report transcriptome analyses using SSL-RNAs and the potential of these expression profiles with machine learning as diagnostic biomarkers for PD in double cohorts (PD [n = 15, 50], controls [n = 15, 50]). Differential expression analysis between the patients with PD and healthy controls identified more than 100 differentially expressed genes in the two cohorts. In each cohort, several genes related to oxidative phosphorylation were upregulated, and gene ontology analysis using differentially expressed genes revealed functional processes associated with PD. Furthermore, machine learning using the expression information obtained from the SSL-RNAs was able to efficiently discriminate patients with PD from healthy controls, with an area under the receiver operating characteristic curve of 0.806. This non-invasive gene expression profile of SSL-RNAs may contribute to early PD diagnosis based on the neurodegeneration background.


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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Wednesday, September 29, 2021

Live Attenuated Zoster Vaccine Safe for Patients Receiving TNF Inhibitors No cases of varicella infection found; cumulative incidence of varicella infection or shingles was 0 percent

MONDAY, Sept. 27, 2021 (HealthDay News) -- For patients receiving tumor necrosis factor (TNF) inhibitors, the live attenuated zoster vaccine (ZVL) is safe and has reasonable short-term effectiveness, according to a study published online Sept. 28 in the Annals of Internal Medicine.

Jeffrey R. Curtis, M.D., M.P.H., from the University of Alabama at Birmingham, and colleagues examined the safety and immunogenicity of ZVL among adults aged 50 years or older receiving TNF inhibitors for any indication. A total of 617 adults were randomly assigned in a 1:1 ratio to receive ZVL or placebo (310 and 307, respectively) at 33 centers.

The most common indications for TNF inhibitor use were rheumatoid arthritis and psoriatic arthritis (57.6 and 24.1 percent, respectively). The researchers observed no cases of confirmed varicella infection through week 6; the cumulative incidence of varicella infection or shingles was 0 percent. Compared with baseline, at six weeks, the mean increases in geometric mean fold rise as measured by glycoprotein enzyme-linked immunosorbent assay and enzyme-linked immunosorbent spot were 1.33 and 1.39 percentage points, respectively.

"Although country-specific labeling requirements may continue to discourage use of a live virus vaccine in immunosuppressed patients receiving biologic therapies, use of this ZVL in TNF inhibitor-treated patients may be a reasonable option, especially in the absence of an alternative zoster vaccine," the authors write.

Wearing Occlusive Gloves Increases the Density of Staphylococcus Aureus in Patients With Hand Eczema Acta Dermato-Venereologica

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Abstract
Hand eczema is frequently colonized with Staphylococcus aureus. Some patients with hand eczema wear occlusive gloves regularly; however, the effect of this on the density of S. aureus is unexplored. The aim of this study is to examine the effect of occlusive gloves on the density of S. aureus sampled from the hands of patients with hand eczema. In an experimental set-up, patients with moderate-to-severe hand eczema wore an occlusive glove on one hand for 4 h with a 30-min break. Bacterial swabs were collected from the most severe eczema lesion on the hand before and immediately after glove exposure. S. aureus colony-forming units were counted and log-transformations used for comparison of before- and after-values. Among 30 patients, 19 (63%) were colonized with S. aureus. After glove occlusion S. aureus colony-forming units increased by a factor of 1.72 (p < 0.01). In conclusion, the density of sampled S. aureus on eczematous skin after prolonged wearing of occlusive gloves is greatly increased.

Acta Dermato-Venereologica
Wearing Occlusive Gloves Increases the Density of Staphylococcus Aureus in Patients with Hand Eczema
Acta Derm Venereol 2021 Aug 16;[EPub Ahead of Print], LB Nørreslet, SM Edslev, EM Flachs, NE Ebbehøj, PS Andersen, T Agner

Monday, September 27, 2021

Estudio identifica grupos que aún corren riesgo de sufrir COVID-19 grave a pesar de la vacunación


Encuentre las últimas noticias y orientación acerca de la vacunación contra la COVID-19 en el Centro de información sobre la vacuna contra el SARS-CoV-2.

Los investigadores han identificado grupos de personas con mayor riesgo de morir o de sufrir una enfermedad grave por COVID-19 después de recibir una o dos dosis de la vacuna anti-COVID-19.[1]

El estudio, realizado por la University of Oxford, en Oxford, Reino Unido, examinó el riesgo de COVID-19 grave que conduce a la hospitalización o la muerte 14 días después de un esquema completo vacunal, cuando se espera una inmunidad sustancial.

Los investigadores utilizaron la herramienta QCovid para analizar los resultados en adultos de 19 años o más entre el 8 de diciembre del año pasado y el 15 de junio de este año.

Utilizaron conjuntos de datos nacionales de la práctica general, la inmunización nacional y las pruebas de SARS-CoV-2, el registro de defunciones y los datos de episodios hospitalarios para analizar una muestra de más de 6,9 ​​millones de adultos vacunados. De ellos, 74,1% había recibido dos dosis de la vacuna anti-COVID-19.

La muestra incluyó 2.031 muertes por COVID-19 y 1.929 ingresos hospitalarios relacionados con COVID-19, de los cuales 81 muertes (4%) y 71 ingresos (3,7%) ocurrieron 14 días o más después de la segunda dosis de vacuna.

La edad media de las personas de la cohorte fue de 52 años.

Nueva herramienta "ayudará a identificar factores de riesgo"

Los hazard ratios (HR) por causas específicas fueron más altos para los pacientes con:

  • Síndrome de Down (HR: 12,7).

  • Trasplante de riñón (HR: 8,1).

  • Anemia de células falciformes (HR: 7,7).

  • Quimioterapia (HR: 4,3).

  • Residencia en hogar de mayores (HR: 4,1).

  • VIH/SIDA (HR: 3,3).

  • Cirrosis hepática (HR: 3,0).

  • Afecciones neurológicas (HR: 2,6).

  • Trasplante reciente de médula ósea o trasplante de órgano sólido alguna vez (HR: 2,5).

  • Demencia (HR: 2,2).

  • Enfermedad de Parkinson (HR: 2,2).

El estudio, publicado en The BMJ,encontró que la incidencia de mortalidad por COVID-19 aumentaba con la edad, la privación, ser hombre y para aquellos con etnia india y pakistaní.

Los mejores datos de investigación clínica del mundo

Dra. Julia Hippisley-Cox

La Dra. Julia Hippisley-Cox, profesora de epidemiología clínica y práctica general en la University of Oxford, coautora del artículo, dijo: "Reino Unido fue el primer lugar en implementar un programa de vacunación y tiene algunos de los mejores datos de investigación clínica en el mundo. Hemos desarrollado esta nueva herramienta utilizando la base de datos QResearch, para ayudar al National Health System a identificar qué pacientes tienen mayor riesgo de resultados graves a pesar de la vacunación, para una intervención dirigida.

"Esta nueva herramienta también puede informar las discusiones entre médicos y pacientes sobre el nivel de riesgo, para ayudar a la toma de decisiones compartida".

El Dr. Aziz Sheikh, profesor de investigación y desarrollo de atención primaria en la University of Edinburgh, en Edimburgo, y coautor del artículo, dijo: "Nuestra nueva herramienta QCovid, desarrollada con la ayuda de expertos de todo el Reino Unido, ha sido diseñada para identificar aquellos en alto riesgo que pueden beneficiarse de intervenciones como dosis de refuerzo de la vacuna o nuevos tratamientos como los anticuerpos monoclonales, que pueden ayudar a reducir el riesgo de progresión de la infección por SARS-CoV-2 a desenlaces graves de la COVID-19".

La Dra. Hippisley-Cox agregó: "El riesgo individual siempre dependerá de las elecciones individuales, así como de la prevalencia actual de la enfermedad. Sin embargo, esperamos que esta nueva herramienta ayude a la toma de decisiones compartida y una evaluación de riesgos más personalizada".

Para más contenido siga a Medscape en FacebookTwitterInstagram y YouTube.


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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Saturday, September 25, 2021

Topical Sirolimus Therapy for Nevus Sebaceus and Epidermal Nevu Journal of the American Academy of Dermatology

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Nevus sebaceus (NS) and epidermal nevus (EN) are relatively common birthmarks. Treatment can be challenging because these lesions may occur in locations where excision would likely result in disfigurement. Some patients decline surgery but still desire treatment to diminish the visibility of their birthmark.

Journal of the American Academy of Dermatology
Topical sirolimus therapy for nevus sebaceus and epidermal nevus: A case series
J Am Acad Dermatol 2021 Aug 21;[EPub Ahead of Print], AG Zhou, RJ Antaya 





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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Watchful Waiting and Tumor Behavior in Patients With Basal Cell Carcinoma

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Abstract 


IMPORTANCE

Few studies have examined watchful waiting (WW) in patients with basal cell carcinoma (BCC), although this approach might be suitable in patients who might not live long enough to benefit from treatment.

OBJECTIVE

To evaluate reasons for WW and to document the natural course of BCC in patients who chose WW and reasons to initiate later treatment.

DESIGN, SETTING, AND PARTICIPANTS

An observational cohort study was performed at a single institution between January 2018 and November 2020 studying patients with 1 or more untreated BCC for 3 months or longer.

EXPOSURES

Watchful waiting was chosen by patients and proxies regardless of this study.

MAIN OUTCOME AND MEASURES

The reasons for WW and treatment were extracted from patient files and were categorized for analyses. Linear mixed models were used to estimate tumor growth and identify covariates associated with tumor growth.

RESULTS

Watchful waiting was chosen for 280 BCCs in 89 patients (47 men [53%] and 42 women [47%]), with a median (interquartile range [IQR]) follow-up of 9 (4-15) months. The median (IQR) age of the included patients was 83 (73-88) years. Patient-related factors or preferences (ie, prioritizations of comorbidities, severe frailty, or limited life expectancy) were reasons to initiate WW in 74 (83%) patients, followed by tumor-related factors (n = 49; 55%). Treatment-related and circumstantial reasons were important for 35% and 46% of the patients, respectively. The minority of tumors increased in size (47%). Tumor growth was associated with BCC subtype (odds ratio, 3.35; 95% CI, 1.47-7.96; P = .005), but not with initial tumor size and location. The estimated tumor diameter increase was 4.46 mm (80% prediction interval, 1.42 to 7.46 mm) in 1 year for BCCs containing at least an infiltrative/micronodular component and 1.06 mm (80% prediction interval, -1.79 to 4.28 mm) for the remaining BCCs (only nodular/superficial component/clinical diagnosis). Most common reasons to initiate treatment were tumor burden or potential tumor burden, resolved reason(s) for WW, and reevaluation of patient-related factors.

CONCLUSIONS AND RELEVANCE

In this cohort study of patients with BCC, WW was an appropriate approach in several patients, especially those with asymptomatic nodular or superficial BCCs and a limited life expectancy. Patients should be followed up regularly to determine whether a WW approach is still suitable and whether patients still prefer WW and to reconsider consequences of treatment and refraining from treatment.


JAMA Dermatology
Evaluation of Watchful Waiting and Tumor Behavior in Patients With Basal Cell Carcinoma: An Observational Cohort Study of 280 Basal Cell Carcinomas in 89 Patients
JAMA Dermatol 2021 Sep 08;[EPub Ahead of Print], MEC van Winden, CRM Hetterschijt, EM Bronkhorst, PCM van de Kerkhof, EMGJ de Jong, SFK Lubeek 



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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Monday, September 20, 2021

Sublingual Minoxidil for the Treatment of Male and Female Pattern Hair Loss

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Abstract 

Minoxidil is an approved medication for severe hypertension androgenetic alopecia.1 Oral minoxidil (OM) is a potent vasodilator used to treat hypertension. It is a pro-drug, activated by hepatic dehydroepiandrosterone sulfotransferase (SULT2A1) to minoxidil sulfate.2OM doses of 2.5 and 5 mg produced peak plasma concentrations of 16.8 and 37.2 ng/mL within 30 min post-dose.3 Side-effects include hypertrichosis, lower limb oedema, postural hypotension and tachycardia. Minoxidil lotion (ML) is approved for the treatment of hair loss. It is also a prodrug converted in hair bulbs by thermostable phenol sulfotransferase (SULT1A1) to minoxidil sulphate. There is a considerable inter subject variability in levels of both hepatic SULT2A1 and follicular SULT1A1. Low SULT1A1 predicts weak hair regrowth with both ML and OM.4,5 Weak hair growth due to low follicular SULT1A1 can be overcome with OM through dose escalation but cannot be overcome with ML due to low solubility and saturation absorption kinetics.6

Journal of the European Academy of Dermatology and Venereology: JEADV
Sublingual minoxidil for the treatment of male and female pattern hair loss: a randomized, double-blind, placebo-controlled, phase 1B clinical trial
J Eur Acad Dermatol Venereol 2021 Aug 22;[EPub Ahead of Print], L Bokhari, LN Jones, RD Sinclair 


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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Saturday, September 18, 2021

Intralesional Candida Antigen and Intralesional Bivalent HPV Vaccine Are More Effective Than Cryotherapy in the Treatment of Common Warts Journal of the American Academy of Dermatology


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Abstract 

Traditional destructive modalities, such as cryotherapy, have been applied over the years to remove tissue infected with the human papilloma virus (HPV). Because they act locally without systemic effect, every wart has to be treated, which might make these modalities inappropriate for patients with multiple lesions.1On the other hand, intralesional immunotherapeutic agents, such as Candida antigen and HPV vaccines, are associated with systemic immune responses that help eradicate HPV in both injected and noninjected warts. Therefore, they can provide an effective alternative to destructive therapy for patients with multiple warts.2,3

Journal of the American Academy of Dermatology
Comparative efficacy of intralesional Candida antigen, intralesional bivalent HPV vaccine, and cryotherapy in the treatment of common warts
J Am Acad Dermatol 2021 Aug 28;[EPub Ahead of Print], A Nassar, R Alakad, R Essam, NM Bakr, A Nofal 

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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Real-World Effectiveness of Adalimumab in Patients With Moderate to Severe Hidradenitis Suppurativa

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Abstract 
Journal of the European Academy of Dermatology and Venereology: JEADV
Real-world effectiveness of adalimumab in patients with moderate-to-severe hidradenitis suppurativa: the 1-year SOLACE study
J Eur Acad Dermatol Venereol 2021 Aug 11;[EPub Ahead of Print], W Gulliver, A Alavi, MC Wiseman, MJ Gooderham, J Rao, MS Alam, KA Papp, O Desjardins, C Jean 


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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Experience using dupilumab for pediatric atopic dermatitis at a tertiary care c enter: Inadequate response and adverse events

Paige L. McKenzie BSSneha Rangu BSJames R. Treat MDLeslie Castelo-Soccio MD, PhD

Background/Objective

Dupilumab is highly effective in treating atopic dermatitis (AD). However, some patients experience difficulties with dupilumab therapy, such as inadequate clinical response, failure to achieve long-term disease control, or adverse events (AEs). Our objective is to assess inadequate response and AEs occurring in children on dupilumab therapy for AD.

Methods

This is a retrospective cohort study of children on dupilumab for AD. Collected variables included patient demographics, medical histories, and dupilumab therapy characteristics. Response analysis was conducted in those with ≥3 months of dupilumab therapy: primary poor responders were defined as those whose EASI scores did not decrease by >50%, and secondary poor responders were those who initially responded but had significant AD flares while on therapy.

Results

We included 200 patients on dupilumab for AD in our cohort; 192 received ≥3 months of therapy and were included in our response analysis. Twelve children experienced inadequate primary response, and 4 were secondary poor responders. Four of these 16 children discontinued therapy due to inadequate response.

The most common dupilumab-associated AEs were facial erythema (n = 24, 12.0%) and injection-site reactions (n = 24, 12.0%). Female sex was significantly associated with experiencing injection-site reactions, and prior hospitalization was significantly associated with HSV infection on dupilumab. Eight patients discontinued therapy due to an AE.

Conclusion

A small but significant number of patients experienced treatment difficulties while on dupilumab. The risk of inadequate response to dupilumab and dupilumab-associated AEs should be discussed thoroughly with patients and their families prior to initiation.


First published: 13 September 2021



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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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Efficacy and Safety of 0.5 mg/kg/day Starting Dose of Oral Corticosteroids to Treat Bullous Pemphigoid The British Journal of Dermatology

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Abstract




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Benjamin Hidalgo-Matlock
Skin Care Physicians of Costa Rica

Clinica Victoria en San Pedro: 4000-1054
Momentum Escazu: 2101-9574

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