Chalabi, Hadeel

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  • Chalabi, Hadeel (1)
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The effect of infectious dose on humoral and cellular immune responses in Chlamydophila caviae primary ocular infection

Filipović, Ana; Ghasemian, Ehsan; Inić-Kanada, Aleksandra; Lukić, Ivana; Stein, Elisabeth; Marinković, Emilija; Đokić, Radmila; Kosanović, Dejana; Schuerer, Nadine; Chalabi, Hadeel; Belij-Rammerstorfer, Sandra; Stojanović, Marijana; Barisani-Asenbauer, Talin

(Public Library Science, San Francisco, 2017)

TY  - JOUR
AU  - Filipović, Ana
AU  - Ghasemian, Ehsan
AU  - Inić-Kanada, Aleksandra
AU  - Lukić, Ivana
AU  - Stein, Elisabeth
AU  - Marinković, Emilija
AU  - Đokić, Radmila
AU  - Kosanović, Dejana
AU  - Schuerer, Nadine
AU  - Chalabi, Hadeel
AU  - Belij-Rammerstorfer, Sandra
AU  - Stojanović, Marijana
AU  - Barisani-Asenbauer, Talin
PY  - 2017
UR  - http://intor.torlakinstitut.com/handle/123456789/477
AB  - Following infection, the balance between protective immunity and immunopathology often depends on the initial infectious load. Several studies have investigated the effect of infectious dose; however, the mechanism by which infectious dose affects disease outcomes and the development of a protective immune response is not known. The aim of this study was to investigate how the infectious dose modulates the local and systemic humoral and the cellular immune responses during primary ocular chlamydial infection in the guinea pig animal model. Guinea pigs were infected by ocular instillation of a Chlamydophila caviae-containing eye solution in the conjunctival sac in three different doses: 1x10(2), 1x10(4), and 1x10(6) inclusion forming units (IFUs). Ocular pathology, chlamydial clearance, local and systemic C. caviae-specific humoral and cellular immune responses were assessed. All inocula of C. caviae significantly enhanced the local production of C. caviae-specific IgA in tears, but only guinea pigs infected with the higher doses showed significant changes in C. caviae-specific IgA levels in vaginal washes and serum. On complete resolution of infection, the low dose of C. caviae did not alter the ratio of CD4(+) and CD8(+) cells within guinea pigs' submandibular lymph node (SMLN) lymphocytes while the higher doses increased the percentages of CD4(+) and CD8(+) cells within the SMLN lymphocytes. A significant negative correlation between pathology intensity and the percentage of CD4(+) and CD8(+) cells within SMLN lymphocyte pool at selected time points post-infection was recorded for both 1x10(4), and 1x10(6) IFU infected guinea pigs. The relevance of the observed dose-dependent differences on the immune response should be further investigated in repeated ocular chlamydial infections.
PB  - Public Library Science, San Francisco
T2  - PLoS One
T1  - The effect of infectious dose on humoral and cellular immune responses in Chlamydophila caviae primary ocular infection
IS  - 7
VL  - 12
DO  - 10.1371/journal.pone.0180551
UR  - conv_416
ER  - 
@article{
author = "Filipović, Ana and Ghasemian, Ehsan and Inić-Kanada, Aleksandra and Lukić, Ivana and Stein, Elisabeth and Marinković, Emilija and Đokić, Radmila and Kosanović, Dejana and Schuerer, Nadine and Chalabi, Hadeel and Belij-Rammerstorfer, Sandra and Stojanović, Marijana and Barisani-Asenbauer, Talin",
year = "2017",
abstract = "Following infection, the balance between protective immunity and immunopathology often depends on the initial infectious load. Several studies have investigated the effect of infectious dose; however, the mechanism by which infectious dose affects disease outcomes and the development of a protective immune response is not known. The aim of this study was to investigate how the infectious dose modulates the local and systemic humoral and the cellular immune responses during primary ocular chlamydial infection in the guinea pig animal model. Guinea pigs were infected by ocular instillation of a Chlamydophila caviae-containing eye solution in the conjunctival sac in three different doses: 1x10(2), 1x10(4), and 1x10(6) inclusion forming units (IFUs). Ocular pathology, chlamydial clearance, local and systemic C. caviae-specific humoral and cellular immune responses were assessed. All inocula of C. caviae significantly enhanced the local production of C. caviae-specific IgA in tears, but only guinea pigs infected with the higher doses showed significant changes in C. caviae-specific IgA levels in vaginal washes and serum. On complete resolution of infection, the low dose of C. caviae did not alter the ratio of CD4(+) and CD8(+) cells within guinea pigs' submandibular lymph node (SMLN) lymphocytes while the higher doses increased the percentages of CD4(+) and CD8(+) cells within the SMLN lymphocytes. A significant negative correlation between pathology intensity and the percentage of CD4(+) and CD8(+) cells within SMLN lymphocyte pool at selected time points post-infection was recorded for both 1x10(4), and 1x10(6) IFU infected guinea pigs. The relevance of the observed dose-dependent differences on the immune response should be further investigated in repeated ocular chlamydial infections.",
publisher = "Public Library Science, San Francisco",
journal = "PLoS One",
title = "The effect of infectious dose on humoral and cellular immune responses in Chlamydophila caviae primary ocular infection",
number = "7",
volume = "12",
doi = "10.1371/journal.pone.0180551",
url = "conv_416"
}
Filipović, A., Ghasemian, E., Inić-Kanada, A., Lukić, I., Stein, E., Marinković, E., Đokić, R., Kosanović, D., Schuerer, N., Chalabi, H., Belij-Rammerstorfer, S., Stojanović, M.,& Barisani-Asenbauer, T.. (2017). The effect of infectious dose on humoral and cellular immune responses in Chlamydophila caviae primary ocular infection. in PLoS One
Public Library Science, San Francisco., 12(7).
https://doi.org/10.1371/journal.pone.0180551
conv_416
Filipović A, Ghasemian E, Inić-Kanada A, Lukić I, Stein E, Marinković E, Đokić R, Kosanović D, Schuerer N, Chalabi H, Belij-Rammerstorfer S, Stojanović M, Barisani-Asenbauer T. The effect of infectious dose on humoral and cellular immune responses in Chlamydophila caviae primary ocular infection. in PLoS One. 2017;12(7).
doi:10.1371/journal.pone.0180551
conv_416 .
Filipović, Ana, Ghasemian, Ehsan, Inić-Kanada, Aleksandra, Lukić, Ivana, Stein, Elisabeth, Marinković, Emilija, Đokić, Radmila, Kosanović, Dejana, Schuerer, Nadine, Chalabi, Hadeel, Belij-Rammerstorfer, Sandra, Stojanović, Marijana, Barisani-Asenbauer, Talin, "The effect of infectious dose on humoral and cellular immune responses in Chlamydophila caviae primary ocular infection" in PLoS One, 12, no. 7 (2017),
https://doi.org/10.1371/journal.pone.0180551 .,
conv_416 .
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