Publications by authors named "Silva Emanuel"

The vibration perception threshold (VPT) is the minimum amplitude required for conscious vibration perception. VPT assessments are essential in medical diagnostics, safety, and human-machine interaction technologies. However, factors like age, health conditions, and external variables affect VPTs.

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Background: We assessed the effectiveness, safety and patient-reported outcomes (PROs) of dimethyl fumarate (DMF) in real-world clinical practice in patients with multiple sclerosis (PwMS) from Argentina.

Methods: We conducted a multicenter ambispective cohort study in Argentina between September 2020 and March 2023. Changes in annualized relapse rate (ARR), Expanded Disability Status Scale (EDSS) score, magnetic resonance imaging (MRI), no evidence of disease activity (NEDA), PROs (depression, anxiety, fatigue, burden of treatment and quality of life), and safety data were collected at clinical visits performed every 6 months for at least 24 months.

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  • Susac syndrome, multiple sclerosis, and primary angiitis of the central nervous system often present similar symptoms, making accurate diagnosis a challenge; the study aimed to improve this through a new scoring system called the SPAMS score.
  • The research involved 99 patients from South America and utilized an elastic-net model to determine important MRI features for distinguishing between these conditions.
  • The SPAMS score demonstrated high diagnostic accuracy, effectively differentiating SuS from MS and PACNS, highlighting the importance of specific MRI findings for timely interventions and potentially better patient outcomes.
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  • The study evaluated the effectiveness and safety of cladribine (CLAD) for treating relapsing-remitting multiple sclerosis in 240 patients across Argentina, focusing on clinical relapses and disease progression over 24 months.
  • Results showed a significant decrease in annual relapse rates from 1.19 to 0.19, with many patients achieving no evidence of disease activity (NEDA) at both 12 months (84.2%) and 24 months (77%).
  • The study also monitored lymphopenia, finding that grade 1 lymphopenia was the most common, while severe grade 4 lymphopenia was rare, suggesting CLAD is a safe treatment option.
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The incidence of chikungunya has dramatically surged worldwide in recent decades, imposing an expanding burden on public health. In recent years, South America, particularly Brazil, has experienced outbreaks that have ravaged populations following the rapid dissemination of the chikungunya virus (CHIKV), which was first detected in 2014. The primary vector for CHIKV transmission is the urban mosquito species , which is highly prevalent throughout Brazil.

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Background: The ability of dermatophytes to develop biofilms in host tissues confers physical and biochemical resistance to antifungal drugs. Therefore, research to find new compounds against dermatophyte biofilm is crucial.

Objectives: To evaluate the antifungal activity of riparin II (RIP2), nor-riparin II (NOR2) and dinor-riparin II (DINOR2) against Trichophyton rubrum, Microsporum canis and Nannizzia gypsea strains.

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  • The first pediatric case of a Jaguajir agamemnon scorpion sting was reported in Paraná, southern Brazil.
  • The patient experienced symptoms like pain, swelling, redness, itching, and numbness of the tongue shortly after the sting, but these symptoms improved within two hours.
  • The overall condition was classified as mild, and the child made a full recovery.
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  • Dermatophytosis is a common fungal infection caused by dermatophytes, which produce biofilms that make treatment difficult due to drug resistance.
  • Researchers tested the alkamide alkaloid riparin 1 (RIP1) and its synthetic homologs (NOR1 and DINOR1) for their ability to inhibit biofilm formation in dermatophytes.
  • Results showed that RIP1 and NOR1 effectively reduced the viability of biofilms and had antifungal properties, suggesting they could be potential treatments for dermatophytosis.
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The ability of dermatophytes to develop biofilms is possibly involved in therapeutic failure because biofilms impair drug effectiveness in the infected tissues. Research to find new drugs with antibiofilm activity against dermatophytes is crucial. In this way, riparins, a class of alkaloids that contain an amide group, are promising antifungal compounds.

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Introduction: The discontinuation of disease-modifying therapies (DMTs) in multiple sclerosis (MS) is commonly seen in real-world settings due to several factors.

Area Cover: The aim of this study is to describe the frequency of disease activity after discontinuation of DMTs in MS patients included in the Argentinean MS and NMOSD registry.

Discusion: Patients with relapsing remitting MS (RRMS) and active secondary progressive MS (SPMS) were included based on the following criteria: they discontinued treatment for more than 6 months, they had been treated with a DMT for ≥2 years, and they had at least 6 months of follow-up in the registry after discontinuation.

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Unlabelled: The objective of the study was to evaluate the incidence of COVID-19 after complete vaccination in people with multiple sclerosis (PwMS) included in the Argentinean MS and NMOSD registry (RelevarEM, NCT03375177).

Methods: cohort study conducted between May 2021 and December 2021. The primary outcome was the appearance of infection during the follow-up time (at least three months after complete vaccination (second dose)).

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Background: In multiple sclerosis demographics there is a well-known female prevalence and male patients have been less specifically evaluated in clinical studies, though some clinical differences have been reported between sexes.

Objective: The objective of this study was to assess clinical and demographic differences between male and female patients included in the national Argentine MS Registry-RelevarEM.

Material And Methods: This study was observational, retrospective, and was based on the data of 3099 MS patients included as of 04 April 2021.

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Objective: The objective of this systematic review with meta-analysis was to critically evaluate the available data on sensitivity and specificity of IHC compared with molecular tests in the detection of BRAF V600E mutation in ameloblastomas.

Materials And Methods: This systematic review was performed based on the PRISMA statement and registered in Prospero (CRD42021259117). PubMed, Web of Science, Scopus, and Cochrane Library databases were searched for observational studies to answer the question "What is the diagnostic accuracy of immunohistochemistry compared with molecular tests for the diagnosis of BRAF V600E mutation in ameloblastomas?".

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Background PPMS (primary progressive multiple sclerosis) patients represent less than 10% of MS patients in Argentina, men and women were similarly affected and most of them had a severe functional impairment. More rapid progression has been reported in males, but this is not the case in all datasets. The main objective of our study was to determine the time to EDSS (Expanded disability Status Scale) 4, 6 and 7 in PPMS patients.

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Background: Antiphospholipid Syndrome (APS) is a multisystemic autoimmune disease characterized by arterial and venous thrombosis and / or obstetric morbidity in the presence of at least one circulating anti-phospholipid antibody. The spectrum of vascular events varies from deep venous thrombosis to catastrophic APS, a rare form characterized by acute multiorgan thrombosis and high mortality.

Case Report: We present the case of a 32-week pregnant woman arriving in the hospital emergency room with bilateral acute lower limb ischemia.

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  • This study explored the connection between temporomandibular disorders (TMD) and ankylosing spondylitis (AS) in patients, aiming to assess their combined effects on psychological health, chronic pain, and daily functioning.
  • A total of 30 patients with AS were evaluated, most diagnosed with conventional AS (HLA-B27 positive), displaying significant disease activity and high functional disability scores.
  • The findings revealed that a majority suffered from TMD, resulting in moderate to severe chronic pain and negatively affecting their psychological well-being and functional abilities.
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This study aimed to evaluate the surface (γs) and interaction (ΔGiwi) free energy and calcium (Ca2+) and phosphate (PO43-) adsorption to dental enamel treated with sodium trimetaphosphate (TMP) or calcium glycerophosphate (CaGP) that had or had not been exposed to CaPO4-containing solutions. Bovine enamel blocks (n = 192; 24 blocks/group) were treated (2 mL/block; 2 min) with TMP (0%, 1%, 3%, and 9%) and CaGP (0, 0.25, 0.

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Unlabelled: The objectives of the present study were to describe the frequency of aggressive multiple sclerosis (aMS) as well as to compare clinical and radiological characteristics in aMS and non-aMS patients included in RelevarEM (NCT03375177).

Methods: The eligible study population and cohort selection included adult-onset patients (≥18 years) with definite MS. AMS were defined as those reaching confirmed EDSS ≥ 6 within 5 years from symptom onset.

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Background: Myelin oligodendrocyte glycoprotein antibodies (MOG-ab) have been described in aquaporin-4-antibodies(AQP4-ab)-negative neuromyelitis optica spectrum disorder (NMOSD) patients. We aimed to evaluate the percentage of AQP4-ab-negative NMOSD patients who are positive for MOG-ab in a cohort of Argentinean patients included in RelevarEM (Clinical Trials registry number NCT03375177).

Methods: RelevarEM is a longitudinal, strictly observational multiple sclerosis (MS) and NMOSD registry in Argentina.

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Background: Like MS prevalence, oligoclonal bands (OCB) frequency seems to follow a latitudinal gradient. Argentina is extensive, latitude-wise, and previous studies have not found an MS prevalence latitudinal gradient. Our aim is to describe OCB prevalence in MS, clinically isolated syndrome (CIS) and radiologically isolated syndrome (RIS) patients included in the Argentinean MS and NMOSD registry (RelevarEM) and to investigate if it follows a latitudinal gradient.

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