Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
1988-4-28
pubmed:abstractText
In order to investigate a role of proteinase in the pathogenesis of Candida infections, invasion of C. albicans strains of different proteinase activity into the chorioallantoic membrane (CAM) of developing chicks was studied. Eight strains were used after examining the inducible proteinase activity in the culture containing bovine serum albumin as the sole source of nitrogen. Six were proteinase-producing strains (type I) and two were proteinase-deficient ones (type II). Type I strains were subdivided into type Ia strains in which the proteinase activity persisted for a week in the in vitro culture and type Ib ones in which the enzyme activity was lost by the 7th day after inoculation. By inoculation onto CAM, the type I strains could invade the tissue in which secreted proteinase was detected on the periphery of the invading Candida cells by immunohistochemical method. At an early stage of the infection, proteinase secretion was detected on the surface of the yeast cells before their entry into the tissue. The type II strains remained on the surface of the CAM and did not invade the tissue where the secretion of the enzyme was not detected. The mortality rate of the chick embryo was not correlated with the degree of proteinase production of these strains. Two type Ib strains invaded the CAM tissue and elicited some tissue reactions by the host, yielding a low mortality rate of the chick embryos. These results suggested that the secretion of proteinase was an important factor for the invasion of CAM but other factors were also involved for the pathogenicity of C. albicans.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0385-5600
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1045-60
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Proteinase production and pathogenicity of Candida albicans. I. Invasion into chorioallantoic membrane by C. albicans strains of different proteinase activity.
pubmed:affiliation
Research Institute for Disease Mechanism and Control, Nagoya University School of Medicine, Aichi.
pubmed:publicationType
Journal Article, Comparative Study