Linked Life Data

2398453

Source:http://linkedlifedata.com/resource/pubmed/id/2398453

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1990-10-12
pubmed:abstractText
In a previous study on immune responsiveness among asymptomatic human T-cell leukemia virus type I (HTLV-I) carriers, we found that carriers had significantly reduced delayed-type hypersensitivity (DTH) response to purified protein derivative (PPD) skin testing. The association was strongest among persons at least 60 years of age. In order to evaluate this finding further, we evaluated the response to both PPD and phytohemagglutinin (PHA) in an elderly population. Fifty-six consecutive hospitalized patients with nonimmunosuppressive diseases were examined. None had a history of tuberculosis nor evidence of the known HTLV-I-associated diseases. The subjects' ages ranged from 62-93 years (median = 75 years); 43 were women and 13 were men. Twenty-two of the subjects were HTLV-I antibody positive. Among the carriers, there was an increased level of nonreactivity to PPD, the relative risk adjusted for age (RR) being 1.9 (95% confidence interval, 0.62-5.8), as well as to PHA of RR = 2.3 (0.60-9.0). When subjects were cross-classified for response to both skin tests, 15 of 17 carriers were nonreactive to either or both antigens compared to 15 of 25 noncarriers [RR = 5.1 (0.99-25.9) (p value, one-sided = 0.026)]. The decline in reactivity to both antigens increased with age, but was consistently lower among the carriers. Among subjects with positive reactions to PPD, the degree of reaction as measured by the size of erythema was reduced among the carriers; however, for PHA responders, the response in carriers appeared to be normal. Among the HTLV-I antibody negative subjects, the size of erythema for both antigens was strongly correlated (p = 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0894-9255
pubmed:author
pubmed:issnType
Print
pubmed:volume
3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1006-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Suppression of delayed-type hypersensitivity to PPD and PHA in elderly HTLV-I carriers.
pubmed:affiliation
Second Department of Internal Medicine, Miyazaki Medical School, Japan.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't