Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2007-11-5
pubmed:abstractText
If an ABO-incompatible heart is transplanted into an infant before natural antibodies have developed to the specific donor carbohydrate A/B antigen(s), then B-cell tolerance to the donor A/B antigen is achieved, and these antibodies never develop. Anti-carbohydrate antibodies play a role in the rejection of wild type (WT) and alpha1,3-galactosyltransferase gene-knockout (GT-KO) pig xenografts. We investigated development of these antibodies in infant baboons and humans. Serum samples from infant baboons (n = 42) and humans (n = 42) were tested by flow cytometry for immunoglobulin M and immunoglobulin G binding to peripheral blood mononuclear cells from WT and GT-KO pigs, and for complement-dependent cytotoxicity. The presence of anti-blood group antibodies was tested in baboon serum. In infant baboons and humans, cytotoxic anti-Galalpha1,3Gal antibodies develop during the first 3 months, and steadily increase with age, whereas cytotoxic anti-nonGal antibodies are either absent or minimal in the majority of cases throughout the first year of life. Anti-blood group antibodies were not detected before 16 weeks of age. Our data suggest GT-KO pig organ/cell transplants could be carried out in early infancy in the absence of preformed cytotoxic anti-nonGalalpha1,3Gal antibodies.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0934-0874
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1050-8
pubmed:meshHeading
pubmed-meshheading:17850234-ABO Blood-Group System, pubmed-meshheading:17850234-Animals, pubmed-meshheading:17850234-Animals, Genetically Modified, pubmed-meshheading:17850234-Antibody Formation, pubmed-meshheading:17850234-Child Development, pubmed-meshheading:17850234-Cytotoxicity Tests, Immunologic, pubmed-meshheading:17850234-Flow Cytometry, pubmed-meshheading:17850234-Galactosyltransferases, pubmed-meshheading:17850234-Humans, pubmed-meshheading:17850234-Immunoglobulin G, pubmed-meshheading:17850234-Immunoglobulin M, pubmed-meshheading:17850234-Infant, pubmed-meshheading:17850234-Infant, Newborn, pubmed-meshheading:17850234-Leukocytes, Mononuclear, pubmed-meshheading:17850234-Models, Animal, pubmed-meshheading:17850234-Papio, pubmed-meshheading:17850234-Swine, pubmed-meshheading:17850234-Transplantation, Heterologous
pubmed:year
2007
pubmed:articleTitle
Late onset of development of natural anti-nonGal antibodies in infant humans and baboons: implications for xenotransplantation in infants.
pubmed:affiliation
Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA.
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural