Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2000-8-3
pubmed:abstractText
To study the pathophysiological roles of overexpressed caspase-1 (CASP1), originally designated as IL-1 beta-converting enzyme, we generated transgenic mice in which human CASP1 is overexpressed in their keratinocytes. The transgenic mice spontaneously developed recalcitrant dermatitis and skin ulcers, characterized by the presence of massive keratinocyte apoptosis. The skin of the mice contained the active form of human CASP1 and expressed mRNA for caspase-activated DNase, an effector endonuclease responsible for DNA fragmentation. Their skin and sera showed elevated levels of mature IL-18 and IL-1 beta, but not of IFN-gamma. The plasma from these animals induced IFN-gamma production by IL-18-responsive NK cells. Administration of heat-killed Propionibacterium acnes, a potent in vivo type 1 cell inducer, caused IFN-gamma-mediated lethal liver injury in the transgenic mice, which was completely inhibited by treatment with neutralizing anti-IL-18 Ab. These results indicated that in vivo overexpression of CASP1 caused spontaneous apoptotic tissue injury and rendered mice highly susceptible to exogenous type 1 cell-inducing condition in collaboration with endogenously accumulated proinflammatory cytokines.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
165
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
997-1003
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10878376-Animals, pubmed-meshheading:10878376-Apoptosis, pubmed-meshheading:10878376-Caspase 1, pubmed-meshheading:10878376-Crosses, Genetic, pubmed-meshheading:10878376-Enzyme Activation, pubmed-meshheading:10878376-Female, pubmed-meshheading:10878376-Hepatitis, Animal, pubmed-meshheading:10878376-Humans, pubmed-meshheading:10878376-Interleukin-18, pubmed-meshheading:10878376-Keratinocytes, pubmed-meshheading:10878376-Male, pubmed-meshheading:10878376-Mice, pubmed-meshheading:10878376-Mice, Inbred C57BL, pubmed-meshheading:10878376-Mice, Transgenic, pubmed-meshheading:10878376-Organ Specificity, pubmed-meshheading:10878376-Propionibacterium acnes, pubmed-meshheading:10878376-Shock, Septic, pubmed-meshheading:10878376-Skin, pubmed-meshheading:10878376-Skin Ulcer, pubmed-meshheading:10878376-Substrate Specificity
pubmed:year
2000
pubmed:articleTitle
Skin-specific caspase-1-transgenic mice show cutaneous apoptosis and pre-endotoxin shock condition with a high serum level of IL-18.
pubmed:affiliation
Departments of Dermatology and Biochemistry, Faculty of Medicine, Mie University, Tsu, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't