Johnny Ferraz Dias

Prof. Dr. Johnny Ferraz Dias

orcid

Research Focus & Metrics

Academic Career Length

37Years (1990-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 April 2013 in Mutation Research - Genetic Toxicology and Environmental Mutagenesis
Verified
Journal Article
Closed access
DBDanieli Benedetti
Danieli Benedetti
ENEmilene Nunes
Emilene Nunes
MSMerielen Sarmento
Merielen Sarmento
CPCarem Porto
Carem Porto
CSCarla Eliete Iochims dos Santos
Carla Eliete Iochims dos Santos
Juliana Da silvaJuliana Da silva
Juliana Da silva

1 January 2004 in Environmental and Molecular Mutagenesis
Verified
Journal Article
Closed access
PDF file
VAVanessa Moraes de Andrade
Vanessa Moraes de Andrade
Juliana Da silvaJuliana Da silva
Juliana Da silva
FSFernanda R. da Silva
Fernanda R. da Silva
VHVanina D. Heuser
Vanina D. Heuser
JDJohnny Ferraz Dias
Johnny Ferraz Dias
Thales De FreitasThales De Freitas
Thales De Freitas

1 October 2010 in Environmental Research
Verified
Journal Article
Closed access
JZJairo José Zocche
Jairo José Zocche
DLDaniela Dimer Leffa
Daniela Dimer Leffa
ADAdriani Paganini Damiani
Adriani Paganini Damiani
FCFernando Carvalho
Fernando Carvalho
RMRodrigo Ávila Mendonça
Rodrigo Ávila Mendonça
VAVanessa Moraes de Andrade
Vanessa Moraes de Andrade

1 February 2017 in Journal of Hazardous Materials
Verified
Journal Article
Closed access
CMCristina Araujo Matzenbacher
Cristina Araujo Matzenbacher
AGAna Letícia Hilario Garcia
Ana Letícia Hilario Garcia
MSMarcela Silva dos Santos
Marcela Silva dos Santos
CNCaroline Cardoso Nicolau
Caroline Cardoso Nicolau
SPSuziane Premoli
Suziane Premoli
Juliana Da silvaJuliana Da silva
Juliana Da silva

1 June 2018 in Science of The Total Environment
Verified
Journal Article
Open access
GLGrethel León-Mejía
Grethel León-Mejía
MMMariana Nascimento Machado
Mariana Nascimento Machado
RORenata Tiemi Okuro
Renata Tiemi Okuro
Luis Felipe Silva OliveiraLuis Felipe Silva Oliveira
Luis Felipe Silva Oliveira
CTClaudia Telles
Claudia Telles
WZWalter Araujo Zin
Walter Araujo Zin
Continuous exposure to coal mining particles can cause a variety of lung diseases. We aimed to evaluate the outcomes of exposure to detailed characterized coal and coal fly ash (CFA) particles on DNA, lung and extrapulmonary tissues. Coal samples (COAL11 and COAL16) and CFA samples (CFA11 and CFA16) were included in this study. Intending to enhance the combustion process COAL16 was co-fired with a mixture of fuel oil and diesel oil, producing CFA16. Male BALB/c mice were intratracheally instilled with coal and CFA particles. Measurements were done 24h later. Results showed significant rigidity and obstruction of the central airways only for animals acutely exposed to coal particles. The COAL16 group also showed obstruction of the peripheral airways. Mononuclear cells were recruited in all treatment groups and expression of cytokines, particularly TNF-α and IL-1β, was observed. Only animals exposed to COAL16 showed a significant expression of IL-6 and recruitment of polymorphonuclear cells. DNA damage was demonstrated by Comet assay for all groups. Cr, Fe and Ni were detected in liver, spleen and brain, showing the efficient translocation of metals from the bloodstream to extrapulmonary organs. These effects were associated with particle composition (oxides, hydroxides, phosphates, sulfides, sulphates, silciates, organic-metalic compounds, and polycyclic aromatic hidrocarbons) rather than their size. This work provides state of knowledge on the effects of acute exposure to coal and CFA particles on respiratory mechanics, DNA damage, translocation of metals to other organs and related inflammatory processes.

1 March 2018 in Journal of Hazardous Materials
Verified
Journal Article
Closed access
ANAdriane Perachi Nordin
Adriane Perachi Nordin
Juliana Da silvaJuliana Da silva
Juliana Da silva
CSClaudia Telles de Souza
Claudia Telles de Souza
LNLiana A.B. Niekraszewicz
Liana A.B. Niekraszewicz
JDJohnny Ferraz Dias
Johnny Ferraz Dias
FSFernanda Rabaioli da Silva
Fernanda Rabaioli da Silva