ArticleInfection and immunity1995
Cellular immunity to the P6 outer membrane protein of nontypeable Haemophilus influenzae.
Article in Infection and immunity, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed, 11 citations in OpenAlex.
- Intranasal immunization enhances clearance of nontypeable Haemophilus influenzae and reduces stimulation of tumor necrosis factor alpha production in the murine model of otitis media.Infection and immunity · 2001Article
- Induction of specific immunoglobulin A and Th2 immune responses to P6 outer membrane protein of nontypeable Haemophilus influenzae in middle ear mucosa by intranasal immunization.Infection and immunity · 2000Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Cellular immunity to nontypeable Haemophilus influenzae in a population of 10 healthy, immune adults was determined by measuring lymphocyte blast transformation and antibody secretion in response to the P6 outer membrane protein. P6 (200 microliters/ml) induced lymphocyte blast transformation that peaked on day 10 of incubation. The peak induction of antibody-secreting cells occurred on day 8 of incubation. In comparison with the response to tetanus toxoid stimulation, the peak lymphocyte blast transformation response to P6 was reduced (mean counts per minute +/- standard error of the mean [SEM], 3,457 +/- 503 versus 9,414 +/- 1,464; P = 0.0051) and delayed (mean days +/- SEM, 10.3 +/- 0.4 versus 8.4 +/- 0.5; P = 0.0169); however, P6 was a better stimulus of antibody secretion from lymphocytes, particularly antibody of the immunoglobulin M (IgM) class (mean peak numbers of antibody-secreting cells per 10(5) peripheral blood mononuclear cells +/- SEM: IgG, 85 +/- 29 versus 42 +/- 16 [P = 0.0469]; IgM, 81 +/- 20 versus 25 +/- 7 [P = 0.0125]; IgA, 24 +/- 8 versus 16 +/- 6 [P = 0.0526]). Thus, lymphocytes from immune individuals recognize P6 of nontypeable H. influenzae as an immunogen. These data provide a basis for future studies with otitis-prone children who fail to develop a normal antibody response to P6 antigen (N. Yamanaka and H. Faden, J. Pediatr. 122:212-218, 1993).
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