1
|
Ferreira MS, Martins LC, de Melo KFL, da Silva WB, Imbeloni AA, Muniz JAPC, de Oliveira CF, Freitas MNO, Dos Santos ÉB, Chagas LL, Luz MBM, de Queiroz LAD, Tesh RB, Vasconcelos PFC. Experimental Yellow Fever in the Squirrel Monkey ( Saimiri spp.): Hematological, Biochemical, and Immunological Findings. Viruses 2023; 15:v15030613. [PMID: 36992323 PMCID: PMC10052740 DOI: 10.3390/v15030613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 11/04/2022] [Accepted: 11/18/2022] [Indexed: 03/31/2023] Open
Abstract
Between 2016 and 2018, Brazil experienced the largest sylvatic epidemic of yellow fever virus (YFV). Despite to the magnitude and rapid spread of the epidemic, little is known about YFV dispersion. The study evaluated whether the squirrel monkey is a good model for yellow fever (YF) studies. Methods: Ten animals were infected with 1 × 106 PFU/mL of YFV, with one negative control. Blood samples were collected daily during the first 7 days and at 10, 20 and 30 days post infection (dpi) for detection of viral load and cytokines by RT-qPCR; measurements of AST, ALT, urea and creatinine were taken; IgM/IgG antibodies were detected by ELISA, and hemagglutination inhibition and neutralization tests were performed. The animals exhibited fever, flushed appearance, vomiting and petechiae, and one animal died. Viremia was detected between 1 and 10 dpi, and IgM/IgG antibodies appeared between 4 and 30 dpi. The levels of AST, ALT and urea increased. The immune responses were characterized by expression of S100 and CD11b cells; endothelial markers (VCAM-1, ICAM-1 and VLA-4), cell death and stress (Lysozyme and iNOS); and pro-inflammatory cytokines (IL-8, TNF-α, and IFN-γ) and anti-inflammatory cytokines (IL-10 and TGF-β). The squirrel monkeys showed changes similar to those described in humans with YF, and are a good experimental model for the study of YF.
Collapse
Affiliation(s)
- Milene S Ferreira
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
- Postgraduate Program in Biology of Infectious and Parasitic Agents, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Lívia C Martins
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Karla F L de Melo
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | | | - Aline A Imbeloni
- National Primate Center, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | | | - Camille F de Oliveira
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Maria Nazaré O Freitas
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Éder B Dos Santos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Liliane L Chagas
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Márcia B M Luz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Luiz A D de Queiroz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
| | - Robert B Tesh
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Pedro F C Vasconcelos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ananindeua 67030000, PA, Brazil
- Department of Pathology, Pará State University, Belém 66050540, PA, Brazil
| |
Collapse
|
2
|
Carvalho RNSD, Guimarães D, Leão VA, Dutra JCS, Silva WBD. ESTIMATION OF PARAMETERS AND STATES USING A BAYESIAN PARTICLE FILTER FOR THE SULFATE ION ADSORPTION PROCESS IN A FIXED BED COLUMN. Braz J Chem Eng 2019. [DOI: 10.1590/0104-6632.20190363s20180059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
3
|
Freitas AL, Santos CA, Souza CA, Nunes MA, Antoniolli ÂR, da Silva WB, da Silva FA. The use of medicinal plants in venous ulcers: a systematic review with meta-analysis. Int Wound J 2017; 14:1019-1024. [PMID: 28488305 DOI: 10.1111/iwj.12751] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/04/2017] [Indexed: 01/03/2023] Open
Abstract
The aim of this study was to systematically review the use of medicinal plants for the treatment of varicose ulcers. The databases used in the search were: Medline/Pubmed, Scopus, Cinhal, Lilacs and Web of Science. The selection process was divided into two phases: the reading of titles and abstracts and the full reading of selected articles. The item description was compared with the checklist of the Consolidated Standards of Reporting Trials. The initial search produced 3505 articles and seven were selected for inclusion in the systematic review. Of the included studies, 7 (100%) evaluated the reduction of the ulcer area, 4 (57·14%) evaluated reepithelisation, 2 (28·57%) evaluated bacterial flora and 1 (14·28%) evaluated the oxygen pressure and percutaneous carbon dioxide. The level of evidence rating indicated that five studies (71·42%) were rated at level 2 and two (28·57%) were rated at level 3. The quality assessment was performed using the Jadad scale, which is prevalent in the literature. The quality score of the Jadad questionnaire ranges from 0 to 5; here, the studies analysed had an average of 2·5. A meta-analysis was performed on two studies that analysed the effects of Mimosa tenuiflora hydrogel in the treatment of venous ulcer and included 42 patients with a mean age of 60·5 years and a mean duration of treatment of 10·5 weeks. Heterogeneity was assessed using I2 ; we obtained a high value of 84%. We concluded that, despite the efficacy of the incorporation of Ageratina pichinchensis into the gel, the hydrogel that incorporated M. tenuiflora appeared to be a promising candidate for the management of venous ulcers.
Collapse
Affiliation(s)
- Anderson L Freitas
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Brazil
| | - Carla A Santos
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Brazil
| | - Carlos As Souza
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Brazil
| | - Marco Ap Nunes
- Departament of Medicine, Federal University of Sergipe, São Cristóvão, Brazil
| | - Ângelo R Antoniolli
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Brazil
| | | | | |
Collapse
|