Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1998-4-23
pubmed:abstractText
The circumsporozoite protein (CSP) is a target for effector Ab and cell mediated immunity against malaria parasites; DNA vaccination can induce both types of effector response. The immunogenicity and efficacy of two DNA plasmids expressing different amounts of Plasmodium berghei CSP were evaluated by immunizing BALB/c mice i.m. or epidermally and by varying the number of immunizations (one to three doses) and the interval between immunizations. Expanding the interval gave the strongest effect, increasing efficacy and antibody boosting, and, in the case of epidermal vaccination, promoting a switch in CSP-specific IgG isotypes from IgG1 to a balance with IgG2a. The strongest humoral immune response and the greatest level of protection were induced by vaccinating epidermally with high expresser plasmid, using a gene gun to administer three doses at 6-wk intervals. For this group, the mean, repeat-specific, prechallenge antibody titer among mice not infected after challenge was significantly higher than that in infected mice, but the mean prechallenge titers for antibody reactive with whole sporozoites were not significantly different. The interval-dependent induction of IgG2a antibodies by epidermal vaccination contradicts the widely held belief that antibody responses induced by this method are restricted to those that are Th2 dependent.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
159
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6112-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:9550412-Animals, pubmed-meshheading:9550412-Antibodies, Protozoan, pubmed-meshheading:9550412-Cattle, pubmed-meshheading:9550412-Epidermis, pubmed-meshheading:9550412-Female, pubmed-meshheading:9550412-Humans, pubmed-meshheading:9550412-Immunization, Secondary, pubmed-meshheading:9550412-Immunization Schedule, pubmed-meshheading:9550412-Immunoglobulin G, pubmed-meshheading:9550412-Injections, Intradermal, pubmed-meshheading:9550412-Injections, Intramuscular, pubmed-meshheading:9550412-Malaria, pubmed-meshheading:9550412-Mice, pubmed-meshheading:9550412-Mice, Inbred BALB C, pubmed-meshheading:9550412-Plasmids, pubmed-meshheading:9550412-Plasmodium berghei, pubmed-meshheading:9550412-Protozoan Proteins, pubmed-meshheading:9550412-Recombinant Proteins, pubmed-meshheading:9550412-Sequence Analysis, DNA, pubmed-meshheading:9550412-Vaccines, DNA
pubmed:year
1997
pubmed:articleTitle
Immune responses induced by intramuscular or gene gun injection of protective deoxyribonucleic acid vaccines that express the circumsporozoite protein from Plasmodium berghei malaria parasites.
pubmed:affiliation
Department of Immunology, Walter Reed Army Medical Institute of Research, Washington, DC 20307-5100, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't