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Toxoplasma gondii SAG2, SAG3 and GRA6 alleles and single nucleotide polymorphism in congenital infections with known parasite load and clinical outcome SAG2 SAG GRA
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Targa, Lília Spaleta
; Santos, Emilly Henrique dos
; Yamamoto, Lidia
; Barreira, Gabriel Acca
; Rodrigues, Karen Alessandra
; Rocha, Mussya Cisotto
; Kanunfre, Kelly Aparecida
; Okay, Thelma Suely
.
Revista do Instituto de Medicina Tropical de São Paulo
- Métricas do periódico
ABSTRACT Amniotic fluid DNA samples were genotyped by multilocus-nested-PCR-RFLP, but only three of 11 markers amplified 113 of 122 (92.6%) samples, resulting in 12 untyped and 101 partial non-archetypal genotypes. The 101 typed samples were subdivided into four groups: G1 with 73 samples (5’and 3’ SAG2 allele I + SAG3 allele III + GRA6 allele III), 53 had parasite load ≤ 102 parasites/mL (43 asymptomatic, 10 mild infections), 17 had load > 102 and ≤ 103 (one mild, 13 moderate and three severe), and three had load > 103 parasites/mL (three severe); G2 with 22 samples (5’and 3’ SAG2 allele I + SAG3 allele III), all parasite load levels ≤ 102 parasites/mL (18 asymptomatic and four mild); G3 with five samples (5’ and 3’ SAG2 allele I + SAG3 allele II), parasite load ≤ 102 parasites/mL (three asymptomatic and two mild); G4 with one sample (5’ and 3’ SAG2 allele II + SAG3 allele II + GRA6 allele I), a parasite load < 102 parasites/mL in an asymptomatic infant. After DNA sequencing, restriction sites confirmed SAG2, SAG3 and GRA6 alleles in 98.7%, 100% and 100% of the cases, respectively, while single nucleotide polymorphisms confirmed 90% of 5’-SAG2 allele I; 98.7% of 3’-SAG2 allele I; 98% of SAG-3 allele III, but only 40% of GRA6 allele III results. For the moment, partial non-archetypal genotypes of parasites did not show any relationship with either parasite load in amniotic fluid samples or clinical outcome of infants at the age of 12 months. multilocusnestedPCRRFLP, multilocusnestedPCRRFLP multilocus nested PCR RFLP, RFLP multilocus-nested-PCR-RFLP 1 92.6% 926 92 6 (92.6% nonarchetypal non archetypal groups G 7 5and 5 3 SAG GRA , III) parasitesmL mL 43 (4 infections, infections infections) severe, severe severe) 2 18 (1 mild) (5 II, II) I, I) infant sequencing 987 98 100 cases respectively 90 5SAG2 5’-SAG 98.7 3SAG2 3’-SAG SAG- 40 results moment months 92.6 9 (92.6 4 ( 5SAG 98. 3SAG 92. (92. (92 (9
2.
SARS-CoV-2 and rhinovirus infections: are there differences in clinical presentation, laboratory abnormalities, and outcomes in the pediatric population?
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Pereira, Maria Fernanda Bádue
; Suguita, Priscila
; Litvinov, Nadia
; Farhat, Sylvia Costa Lima
; Paula, Camila Sanson Yoshino de
; Lázari, Carolina dos Santos
; Bedê, Pedro Vale
; Framil, Juliana Valeria de Souza
; Bueno, Catarina
; Branas, Priscila Cristina Abduch Adas
; Guimarães, Irina Monteiro da Costa
; Leite, Marcia Marques
; Navega, Ana Carolina Barsaglini
; Nanbu, Danilo Yamamoto
; Schvartsman, Claudio
; Pinho, João Renato Rebello
; Silva, Clovis Artur Almeida
; Marques, Heloisa Helena de Sousa
; Eisencraft, Adriana Pasmanik
; Rossi Jr, Alfio
; Delgado, Artur Figueiredo
; Leal, Gabriela Nunes
; Gibelli, Maria Augusta Cicaroni
; Palmeira, Patricia
; Sakita, Neusa Keico
; Santos, Emilly Henrique dos
; Rocha, Mussya Cisotto
; Kanunfre, Kelly Aparecida
; Okay, Thelma Suely
; Carneiro-Sampaio, Magda
; Carvalho, Werther Brunow de
.
Revista do Instituto de Medicina Tropical de São Paulo
- Métricas do periódico
ABSTRACT This study aims to assess COVID-19 and other respiratory viruses in pediatric patients. Between April 17 and September 30, 2020, we collected 1,566 respiratory samples from 1,044 symptomatic patients who were younger than 18 years old to assess SARS-CoV-2 infection. Of these, 919 were analyzed for other respiratory pathogens (ORP). Patients with laboratory-confirmed COVID-19 or ORP were included. We evaluated 76 pediatric COVID-19 infections and 157 other respiratory virus infections. Rhinovirus occurred in 132/157 (84%). COVID-19 patients who were significantly older, had more fevers, headaches and pneumonia than those with ORP. The median white blood cell count was lower in patients with SARS-CoV-2 than in those with ORP (6,470 versus 8,170; p=0.02). COVID-19 patients had significantly worse symptoms than those with ORP.
3.
Differences in children and adolescents with SARS-CoV-2 infection: a cohort study in a Brazilian tertiary referral hospital
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Marques, Heloisa Helena de Sousa
; Pereira, Maria Fernanda Badue
; Santos, Angélica Carreira dos
; Fink, Thais Toledo
; Paula, Camila Sanson Yoshino de
; Litvinov, Nadia
; Schvartsman, Claudio
; Delgado, Artur Figueiredo
; Gibelli, Maria Augusta Bento Cicaroni
; Carvalho, Werther Brunow de
; Odone Filho, Vicente
; Tannuri, Uenis
; Carneiro-Sampaio, Magda
; Grisi, Sandra
; Duarte, Alberto José da Silva
; Antonangelo, Leila
; Francisco, Rossana Pucineli Vieira
; Okay, Thelma Suely
; Batisttella, Linamara Rizzo
; Carvalho, Carlos Roberto Ribeiro de
; Brentani, Alexandra Valéria Maria
; Silva, Clovis Artur
; Eisencraft, Adriana Pasmanik
; Rossi Junior, Alfio
; Fante, Alice Lima
; Cora, Aline Pivetta
; Reis, Amelia Gorete A. de Costa
; Ferrer, Ana Paula Scoleze
; Andrade, Anarella Penha Meirelles de
; Watanabe, Andreia
; Gonçalves, Angelina Maria Freire
; Waetge, Aurora Rosaria Pagliara
; Silva, Camila Altenfelder
; Ceneviva, Carina
; Lazari, Carolina dos Santos
; Abellan, Deipara Monteiro
; Santos, Emilly Henrique dos
; Sabino, Ester Cerdeira
; Bianchini, Fabíola Roberta Marim
; Alcantara, Flávio Ferraz de Paes
; Ramos, Gabriel Frizzo
; Leal, Gabriela Nunes
; Rodriguez, Isadora Souza
; Pinho, João Renato Rebello
; Carneiro, Jorge David Avaizoglou
; Paz, Jose Albino
; Ferreira, Juliana Carvalho
; Ferranti, Juliana Ferreira
; Ferreira, Juliana de Oliveira Achili
; Framil, Juliana Valéria de Souza
; Silva, Katia Regina da
; Kanunfre, Kelly Aparecida
; Bastos, Karina Lucio de Medeiros
; Galleti, Karine Vusberg
; Cristofani, Lilian Maria
; Suzuki, Lisa
; Campos, Lucia Maria Arruda
; Perondi, Maria Beatriz de Moliterno
; Diniz, Maria de Fatima Rodrigues
; Fonseca, Maria Fernanda Mota
; Cordon, Mariana Nutti de Almeida
; Pissolato, Mariana
; Peres, Marina Silva
; Garanito, Marlene Pereira
; Imamura, Marta
; Dorna, Mayra de Barros
; Luglio, Michele
; Rocha, Mussya Cisotto
; Aikawa, Nadia Emi
; Degaspare, Natalia Viu
; Sakita, Neusa Keico
; Udsen, Nicole Lee
; Scudeller, Paula Gobi
; Gaiolla, Paula Vieira de Vincenzi
; Severini, Rafael da Silva Giannasi
; Rodrigues, Regina Maria
; Toma, Ricardo Katsuya
; Paula, Ricardo Iunis Citrangulo de
; Palmeira, Patricia
; Forsait, Silvana
; Farhat, Sylvia Costa Lima
; Sakano, Tânia Miyuki Shimoda
; Koch, Vera Hermina Kalika
; Cobello Junior, Vilson
.
OBJECTIVES: To compare demographic/clinical/laboratory/treatments and outcomes among children and adolescents with laboratory-confirmed coronavirus disease 2019 (COVID-19). METHODS: This was a cross-sectional study that included patients diagnosed with pediatric COVID-19 (aged <18 years) between April 11, 2020 and April 22, 2021. During this period, 102/5,951 (1.7%) of all admissions occurred in neonates, children, and adolescents. Furthermore, 3,962 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) detection samples were processed in patients aged <18 years, and laboratory-confirmed COVID-19 occurred in 155 (4%) inpatients and outpatients. Six/155 pediatric patients were excluded from the study. Therefore, the final group included 149 children and adolescents (n=97 inpatients and 52 outpatients) with positive SARS-CoV-2 results. RESULTS: The frequencies of sore throat, anosmia, dysgeusia, headache, myalgia, nausea, lymphopenia, pre-existing chronic conditions, immunosuppressive conditions, and autoimmune diseases were significantly reduced in children and adolescents (p<0.05). Likewise, the frequencies of enoxaparin use (p=0.037), current immunosuppressant use (p=0.008), vasoactive agents (p=0.045), arterial hypotension (p<0.001), and shock (p=0.024) were significantly lower in children than in adolescents. Logistic regression analysis showed that adolescents with laboratory-confirmed COVID-19 had increased odds ratios (ORs) for sore throat (OR 13.054; 95% confidence interval [CI] 2.750-61.977; p=0.001), nausea (OR 8.875; 95% CI 1.660-47.446; p=0.011), and lymphopenia (OR 3.575; 95% CI 1.355-9.430; p=0.010), but also had less hospitalizations (OR 0.355; 95% CI 0.138-0.916; p=0.032). The additional logistic regression analysis on patients with preexisting chronic conditions (n=108) showed that death as an outcome was significantly associated with pediatric severe acute respiratory syndrome (SARS) (OR 22.300; 95% CI 2.341-212.421; p=0.007) and multisystem inflammatory syndrome in children (MIS-C) (OR 11.261; 95% CI 1.189-106. 581; p=0.035). CONCLUSIONS: Half of the laboratory-confirmed COVID-19 cases occurred in adolescents. Individuals belonging to this age group had an acute systemic involvement of SARS-CoV-2 infection. Pediatric SARS and MIS-C were the most important factors associated with the mortality rate in pediatric chronic conditions with COVID-19.
4.
SARS-CoV-2 infections with emphasis on pediatric patients: a narrative review
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Yamamoto, Lidia
; Santos, Emilly Henrique dos
; Pinto, Lacyane Santos
; Rocha, Mussya Cisotto
; Kanunfre, Kelly Aparecida
; Vallada, Marcelo Genofre
; Okay, Thelma Suely
.
Revista do Instituto de Medicina Tropical de São Paulo
- Métricas do periódico
ABSTRACT This narrative review summarizes the main aspects underlying the new coronavirus SARS-CoV-2, its epidemiology, pathophysiology, pointing to differences of SARS-CoV-2 main receptors ACE2, in terms of expression and the amount of soluble ACE2 in the circulation of children, men and women, and also in those with risk factors such as the smokers and pregnant women or presenting with comorbidities (diabetes, obesity, hypertension and other cardiovascular diseases, renal and CNS pre-existing diseases). Clinical manifestations in adults and children were also described, emphasizing the particularities already seen in children, regarding signs, symptoms, viral excretion time and the involvement of all organs and systems. The COVID-19 in the pediatric population was divided into two sections: one dedicated to previously healthy children and adolescents with COVID-19, and the other to those who live with comorbidities and acquired COVID-19. A few paragraphs were reserved to the recently described severe multisystemic inflammatory syndrome associated with COVID-19 (MIS-C) that shares certain characteristics with Kawasaki disease. Some studies on the infection in pregnant and postpartum women, as well as neonates were shown. This review has also covered the laboratory diagnosis of COVID-19, passing through the imaging diagnosis made by the chest tomography revealing ground glass patching opacities, and results of non-specific exams such as the total blood with lymphopenia, the coagulation tests with increased prothrombin times, as well as marked increments of the D-dimer, troponin and proinflammatory cytokines. In the section devoted to the specific laboratory diagnosis of COVID-19, the most used RT-PCR protocols were described and some studies on the serological diagnosis with IgA, IgM and IgG detection were detailed, including the use of rapid immunochromatographic assays and discussing the ideal period after the onset of symptoms to perform each type of test. In the end, the management of pediatric patients with COVID-19 based mainly on supportive measures has been briefly commented.
https://doi.org/10.1590/s1678-9946202062065
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