The aim of this study was to determine whether infectious dose of Chlamydia caviae after repeated infections influences the immunological responses and subsequent clearance of pathogen at the ocular surface of guinea pigs. Animals were infected three times via the conjunctiva at six- and twelve-week intervals by applying either 1 x 10(4) or 1 x 10(6) inclusion-forming units (IFUs) of C. caviae. Ocular pathology, infection course, C. caviae-specific serum IgG levels and their capacity to bind and neutralize infection ex vivo were assessed. Animals infected with 1 x 10(4) IFUs had completely diminished ocular infection and pathology after the 2nd infection with increased levels of C. caviae-specific serum IgG and their effective capacity to bind and neutralize C. caviae. Only partial protection was observed in animals infected with 1 x 10(6) IFUs after the 2nd and 3rd infections. Our findings show that full protection was observed in animals repeatedly infected with the lower dose. The l...ower dose appeared not to compromise the host immune system, thereby enabling fast clearance of the pathogen and the establishment of competent neutralizing antibodies. (C) 2015 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
TY - JOUR
AU - Belij-Rammerstorfer, Sandra
AU - Inić-Kanada, Aleksandra
AU - Stojanović, Marijana
AU - Marinković, Emilija
AU - Lukić, Ivana
AU - Stein, Elisabeth
AU - Montanaro, Jacqueline
AU - Bintner, Nora
AU - Schuerer, Nadine
AU - Ghasemian, Ehsan
AU - Kundi, Michael
AU - Barisani-Asenbauer, Talin
PY - 2016
UR - http://intor.torlakinstitut.com/handle/123456789/470
AB - The aim of this study was to determine whether infectious dose of Chlamydia caviae after repeated infections influences the immunological responses and subsequent clearance of pathogen at the ocular surface of guinea pigs. Animals were infected three times via the conjunctiva at six- and twelve-week intervals by applying either 1 x 10(4) or 1 x 10(6) inclusion-forming units (IFUs) of C. caviae. Ocular pathology, infection course, C. caviae-specific serum IgG levels and their capacity to bind and neutralize infection ex vivo were assessed. Animals infected with 1 x 10(4) IFUs had completely diminished ocular infection and pathology after the 2nd infection with increased levels of C. caviae-specific serum IgG and their effective capacity to bind and neutralize C. caviae. Only partial protection was observed in animals infected with 1 x 10(6) IFUs after the 2nd and 3rd infections. Our findings show that full protection was observed in animals repeatedly infected with the lower dose. The lower dose appeared not to compromise the host immune system, thereby enabling fast clearance of the pathogen and the establishment of competent neutralizing antibodies. (C) 2015 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
PB - Elsevier Science Bv, Amsterdam
T2 - Microbes and Infection
T1 - Infectious dose and repeated infections are key factors influencing immune response characteristics in guinea pig ocular chlamydial infection
EP - 262
IS - 4
SP - 254
VL - 18
DO - 10.1016/j.micinf.2015.12.001
ER -
@article{
author = "Belij-Rammerstorfer, Sandra and Inić-Kanada, Aleksandra and Stojanović, Marijana and Marinković, Emilija and Lukić, Ivana and Stein, Elisabeth and Montanaro, Jacqueline and Bintner, Nora and Schuerer, Nadine and Ghasemian, Ehsan and Kundi, Michael and Barisani-Asenbauer, Talin",
year = "2016",
url = "http://intor.torlakinstitut.com/handle/123456789/470",
abstract = "The aim of this study was to determine whether infectious dose of Chlamydia caviae after repeated infections influences the immunological responses and subsequent clearance of pathogen at the ocular surface of guinea pigs. Animals were infected three times via the conjunctiva at six- and twelve-week intervals by applying either 1 x 10(4) or 1 x 10(6) inclusion-forming units (IFUs) of C. caviae. Ocular pathology, infection course, C. caviae-specific serum IgG levels and their capacity to bind and neutralize infection ex vivo were assessed. Animals infected with 1 x 10(4) IFUs had completely diminished ocular infection and pathology after the 2nd infection with increased levels of C. caviae-specific serum IgG and their effective capacity to bind and neutralize C. caviae. Only partial protection was observed in animals infected with 1 x 10(6) IFUs after the 2nd and 3rd infections. Our findings show that full protection was observed in animals repeatedly infected with the lower dose. The lower dose appeared not to compromise the host immune system, thereby enabling fast clearance of the pathogen and the establishment of competent neutralizing antibodies. (C) 2015 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Microbes and Infection",
title = "Infectious dose and repeated infections are key factors influencing immune response characteristics in guinea pig ocular chlamydial infection",
pages = "262-254",
number = "4",
volume = "18",
doi = "10.1016/j.micinf.2015.12.001"
}
Belij-Rammerstorfer, S., Inić-Kanada, A., Stojanović, M., Marinković, E., Lukić, I., Stein, E., Montanaro, J., Bintner, N., Schuerer, N., Ghasemian, E., Kundi, M.,& Barisani-Asenbauer, T. (2016). Infectious dose and repeated infections are key factors influencing immune response characteristics in guinea pig ocular chlamydial infection.
Microbes and Infection
Elsevier Science Bv, Amsterdam., 18(4), 254-262.
https://doi.org/10.1016/j.micinf.2015.12.001
Belij-Rammerstorfer S, Inić-Kanada A, Stojanović M, Marinković E, Lukić I, Stein E, Montanaro J, Bintner N, Schuerer N, Ghasemian E, Kundi M, Barisani-Asenbauer T. Infectious dose and repeated infections are key factors influencing immune response characteristics in guinea pig ocular chlamydial infection. Microbes and Infection. 2016;18(4):254-262
