Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
1995-12-18
pubmed:abstractText
Patients with B cell chronic lymphocytic leukemia (B-CLL) have decreased capacity to mount relevant antibody responses upon immunization, and development of hypogammaglobulinemia is part of the natural history of the disease. We investigated the influence of histamine type-2 (H2) receptor blockade by ranitidine on the in vivo antibody production in B-CLL patients following vaccination. Anti-polysaccharide antibodies in B-CLL patients, vaccinated with a tetanus-toxoid conjugated vaccine against Haemophilus influenzae type-B (Hib), reached long-term protective levels in more than 90% of B-CLL patients randomized to ranitidine treatment, as compared to 43% of the untreated patients (P = 0.024). No difference in the response to vaccination against influenza virus types A and B protein could be detected between the two groups. Plasma histamine levels were 2-fold to 20-fold higher in 23 out of 31 B-CLL patients, compared to normal controls, and these levels showed a significant positive correlation to disease duration. These findings indicate the possibility of improving in vivo antibody production against a highly relevant pathogen in B-CLL patients by histamine type-2 receptor blockade, and the combined finding of an immune-stimulatory effect of ranitidine and increased plasma histamine levels, strongly suggests the involvement of histamine in the pathogenesis of B-CLL immunodeficiency.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0887-6924
pubmed:author
pubmed:issnType
Print
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1902-9
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed-meshheading:7475282-Adjuvants, Immunologic, pubmed-meshheading:7475282-Adult, pubmed-meshheading:7475282-Aged, pubmed-meshheading:7475282-Antibodies, Bacterial, pubmed-meshheading:7475282-Cells, Cultured, pubmed-meshheading:7475282-Female, pubmed-meshheading:7475282-Granulocyte-Macrophage Colony-Stimulating Factor, pubmed-meshheading:7475282-Haemophilus Vaccines, pubmed-meshheading:7475282-Histamine, pubmed-meshheading:7475282-Histamine H2 Antagonists, pubmed-meshheading:7475282-Humans, pubmed-meshheading:7475282-Interleukin-3, pubmed-meshheading:7475282-Leukemia, Lymphocytic, Chronic, B-Cell, pubmed-meshheading:7475282-Lymphocyte Activation, pubmed-meshheading:7475282-Male, pubmed-meshheading:7475282-Middle Aged, pubmed-meshheading:7475282-Ranitidine, pubmed-meshheading:7475282-Receptors, IgE, pubmed-meshheading:7475282-Vaccination
pubmed:year
1995
pubmed:articleTitle
Improved vaccination response during ranitidine treatment, and increased plasma histamine concentrations, in patients with B cell chronic lymphocytic leukemia.
pubmed:affiliation
Department of Hematology, University Hospital Rigshospitalet, Copenhagen, Denmark.
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial, Research Support, Non-U.S. Gov't