Results 1 to 10 of about 3,327 (180)

Inativação fotodinâmica de microrganismos [PDF]

Quimica Nova, 2007
Photodynamic Therapy uses photosensitive dyes and visible light that, combined in the presence of oxygen, produce cytotoxic species that cause tumor death. Microorganisms such as bacteria, fungi, yeasts and viruses (including HIV) can also be inactivated by visible light after treatment with an appropriate photosensitizer as an alternative low cost ...
Janice R Perussi
exaly   +4 more sources

Bioterrorismo e microrganismos patogênicosApresentação [PDF]

Historia, Ciencias, Saude - Manguinhos, 2013
O uso de microrganismos patogênicos em atos de bioterrorismo é já há algum tempo objeto de grande preocupação em vários países. O presente trabalho apresenta a possível aplicação de vírus e bactérias para fins bélicos e terroristas, bem como o diagnóstico laboratorial para a identificação desses agentes. Foram salientados, entre outros, como agentes de
Ortrud Monika Barth, Hermann G Schatzmayr, Schatzmayr Hermann G   +2 more
exaly   +5 more sources

Klebsiella pneumoniae Biofilms and Their Role in Disease Pathogenesis

Frontiers in Cellular and Infection Microbiology, 2022
The ability to form biofilms is a crucial virulence trait for several microorganisms, including Klebsiella pneumoniae – a Gram-negative encapsulated bacterium often associated with nosocomial infections.
Maria Eduarda Souza Guerra, Giulia Destro, Brenda Vieira, Alice S. Lima, Lucio Fabio Caldas Ferraz, Anders P. Hakansson, Michelle Darrieux, Thiago Rojas Converso   +7 more
doaj   +1 more source

SdiA, a Quorum-Sensing Regulator, Suppresses Fimbriae Expression, Biofilm Formation, and Quorum-Sensing Signaling Molecules Production in Klebsiella pneumoniae

Frontiers in Microbiology, 2021
Klebsiella pneumoniae is a Gram-negative pathogen that has become a worldwide concern due to the emergence of multidrug-resistant isolates responsible for various invasive infectious diseases. Biofilm formation constitutes a major virulence factor for K.
Thaisy Pacheco, Ana Érika Inácio Gomes, Nathália Maria Gonçalves Siqueira, Lucas Assoni, Michelle Darrieux, Henrietta Venter, Lúcio Fábio Caldas Ferraz   +6 more
doaj   +1 more source

Functional Insights From KpfR, a New Transcriptional Regulator of Fimbrial Expression That Is Crucial for Klebsiella pneumoniae Pathogenicity

Frontiers in Microbiology, 2021
Although originally known as an opportunistic pathogen, Klebsiella pneumoniae has been considered a worldwide health threat nowadays due to the emergence of hypervirulent and antibiotic-resistant strains capable of causing severe infections not only on ...
Ana Érika Inácio Gomes, Thaisy Pacheco, Cristiane da Silva dos Santos, José Aires Pereira, Marcelo Lima Ribeiro, Michelle Darrieux, Lúcio Fábio Caldas Ferraz   +6 more
doaj   +1 more source

Influence of the Polysaccharide Capsule on the Bactericidal Activity of Indolicidin on Streptococcus pneumoniae

Frontiers in Microbiology, 2022
Streptococcus pneumoniae is a pathogen responsible for high morbidity and mortality worldwide. The polysaccharide capsule confers protection against phagocytosis and influences many aspects of pneumococcal pathogenesis. The capsular polysaccharides (CPS)
Natalha T. Waz, Sheila Oliveira, Raquel Girardello, Nilton Lincopan, Giovana Barazzone, Thais Parisotto, Anders P. Hakansson, Thiago Rojas Converso, Michelle Darrieux   +8 more
doaj   +1 more source

A plasmid network from the gut microbiome of semi-isolated human groups reveals unique and shared metabolic and virulence traits

Scientific Reports, 2022
The plasmids in gut microbiomes have the potential to contribute to the microbiome community, as well as human health and physiology. Nevertheless, this niche remains poorly explored.
Liliane Costa Conteville, Ana Carolina Paulo Vicente   +1 more
doaj   +1 more source

Molecular Detection of Drug-Resistance Genes of bla_OXA-23-bla_OXA-51 and mcr-1 in Clinical Isolates of Pseudomonas aeruginosa

Microorganisms, 2021
Pseudomonas aeruginosa has caused high rates of mortality due to the appearance of strains with multidrug resistance (MDR) profiles. This study aimed to characterize the molecular profile of virulence and resistance genes in 99 isolates of P.
Fabiana Nitz, Bruna Oliveira de Melo, Luís Cláudio Nascimento da Silva, Andrea de Souza Monteiro, Sirlei Garcia Marques, Valério Monteiro-Neto, Rosimary de Jesus Gomes Turri, Antonio Dantas Silva Junior, Patrícia Cristina Ribeiro Conceição, Hilário José Cardoso Magalhães, Adrielle Zagmignan, Thiago Azevedo Feitosa Ferro, Maria Rosa Quaresma Bomfim   +12 more
doaj   +1 more source

Microrganismos endofíticos

Semina: Ciências Agrárias, 1996
Fungos, leveduras, bactérias e flagelados associados a células de tecidos internos de plantas saudáveis são chamados microorganismos endofíticos. A relação estabelecida entre o microorganismo endofítico e a planta é não patogênica e assintomática. Esta associação simbiótica provê ao microorganismo nutrição, proteção, sobrevivência e disseminação via ...
Jaqueline Rosemeire Verzignassi, Martin Homechin, João Batista Vida   +2 more
openaire   +3 more sources

Microrganismos mesofílicos em leite UHT

Revista do Instituto de Laticínios Cândido Tostes, 2021
O leite tratado via ultra alta temperatura (UAT) – Ultra High Temperature - UHT está presente na maioria das dietas nacionais e assume papel fundamental na nutrição humana. Os microrganismos mesófilos destacam-se como principais indicadores de qualidade do produto.
Delane Ribas da Rosa, Eduardo Sirichuk de Souza, Julia Arantes Galvão   +2 more
openaire   +2 more sources