h.c. Erwin Braun Foundation, Basel, Switzerland

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h.c. Erwin Braun Foundation, Basel, Switzerland

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Water-filtered Infrared A and visible light (wIRA/VIS) treatment reduces Chlamydia caviae-induced ocular inflammation and infectious load in a Guinea pig model of inclusion conjunctivitis

Inić-Kanada, Aleksandra; Stojanović, Marijana; Miljković, Radmila; Stein, Elisabeth; Filipović, Ana; Frohns, Antonia; Zoeller, Nadja; Kuratli, Jasmin; Barisani-Asenbauer, Talin; Borel, Nicole

(Elsevier Science Sa, Lausanne, 2020)

TY  - JOUR
AU  - Inić-Kanada, Aleksandra
AU  - Stojanović, Marijana
AU  - Miljković, Radmila
AU  - Stein, Elisabeth
AU  - Filipović, Ana
AU  - Frohns, Antonia
AU  - Zoeller, Nadja
AU  - Kuratli, Jasmin
AU  - Barisani-Asenbauer, Talin
AU  - Borel, Nicole
PY  - 2020
UR  - http://intor.torlakinstitut.com/handle/123456789/564
AB  - Trachoma is a devastating neglected tropical disease caused by Chlamydia trachomatis and the leading global cause of infectious blindness. Although antibiotic treatment against trachoma is efficient (SAFE strategy), additional affordable therapeutic strategies are of high interest. Water-filtered infrared A and visible light (wIRA/VIS) irradiation has proven to reduce chlamydial infectivity in vitro and ex vivo. The aim of this study was to evaluate whether wIRA/VIS can reduce chlamydial infection load and/or ocular pathology in vivo, in a guinea pig model of inclusion conjunctivitis. Guinea pigs were infected with 1 x 10(6) inclusion-forming units/eye of Chlamydia caviae via the ocular conjunctiva on day 0. In infected animals, wIRA/VIS irradiation (2100 W/m(2)) was applied on day 2 (single treatment) and on days 2 and 4 (double treatment) post-infection (pi). wIRA/VIS reduced the clinical pathology score on days 7 and 14 pi and the conjunctival chlamydial load on days 2, 4, 7, and 14 pi in comparison with C. caviae-infected, not irradiated, controls. Furthermore, numbers of chlamydial inclusions were decreased in wIRA/VIS treated C. caviae-infected guinea pigs on day 21 pi compared to C. caviae-infected, non-irradiated, controls. Double treatment with wIRA/VIS (days 2 and 4 pi) was more efficient than a single treatment on day 2 pi. wIRA/VIS treatment did neither induce macroscopic nor histologic changes in ocular tissues. Our results indicate that wIRA/VIS shows promising efficacy to reduce chlamydial infectivity in vivo without causing irradiation related pathologies in the follow-up period. wIRA/VIS irradiation is a promising approach to reduce trachoma transmission and pathology of ocular chlamydial infection.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Photochemistry and Photobiology B-Biology
T1  - Water-filtered Infrared A and visible light (wIRA/VIS) treatment reduces Chlamydia caviae-induced ocular inflammation and infectious load in a Guinea pig model of inclusion conjunctivitis
VL  - 209
DO  - 10.1016/j.jphotobiol.2020.111953
UR  - conv_477
ER  - 
@article{
author = "Inić-Kanada, Aleksandra and Stojanović, Marijana and Miljković, Radmila and Stein, Elisabeth and Filipović, Ana and Frohns, Antonia and Zoeller, Nadja and Kuratli, Jasmin and Barisani-Asenbauer, Talin and Borel, Nicole",
year = "2020",
abstract = "Trachoma is a devastating neglected tropical disease caused by Chlamydia trachomatis and the leading global cause of infectious blindness. Although antibiotic treatment against trachoma is efficient (SAFE strategy), additional affordable therapeutic strategies are of high interest. Water-filtered infrared A and visible light (wIRA/VIS) irradiation has proven to reduce chlamydial infectivity in vitro and ex vivo. The aim of this study was to evaluate whether wIRA/VIS can reduce chlamydial infection load and/or ocular pathology in vivo, in a guinea pig model of inclusion conjunctivitis. Guinea pigs were infected with 1 x 10(6) inclusion-forming units/eye of Chlamydia caviae via the ocular conjunctiva on day 0. In infected animals, wIRA/VIS irradiation (2100 W/m(2)) was applied on day 2 (single treatment) and on days 2 and 4 (double treatment) post-infection (pi). wIRA/VIS reduced the clinical pathology score on days 7 and 14 pi and the conjunctival chlamydial load on days 2, 4, 7, and 14 pi in comparison with C. caviae-infected, not irradiated, controls. Furthermore, numbers of chlamydial inclusions were decreased in wIRA/VIS treated C. caviae-infected guinea pigs on day 21 pi compared to C. caviae-infected, non-irradiated, controls. Double treatment with wIRA/VIS (days 2 and 4 pi) was more efficient than a single treatment on day 2 pi. wIRA/VIS treatment did neither induce macroscopic nor histologic changes in ocular tissues. Our results indicate that wIRA/VIS shows promising efficacy to reduce chlamydial infectivity in vivo without causing irradiation related pathologies in the follow-up period. wIRA/VIS irradiation is a promising approach to reduce trachoma transmission and pathology of ocular chlamydial infection.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Photochemistry and Photobiology B-Biology",
title = "Water-filtered Infrared A and visible light (wIRA/VIS) treatment reduces Chlamydia caviae-induced ocular inflammation and infectious load in a Guinea pig model of inclusion conjunctivitis",
volume = "209",
doi = "10.1016/j.jphotobiol.2020.111953",
url = "conv_477"
}
Inić-Kanada, A., Stojanović, M., Miljković, R., Stein, E., Filipović, A., Frohns, A., Zoeller, N., Kuratli, J., Barisani-Asenbauer, T.,& Borel, N.. (2020). Water-filtered Infrared A and visible light (wIRA/VIS) treatment reduces Chlamydia caviae-induced ocular inflammation and infectious load in a Guinea pig model of inclusion conjunctivitis. in Journal of Photochemistry and Photobiology B-Biology
Elsevier Science Sa, Lausanne., 209.
https://doi.org/10.1016/j.jphotobiol.2020.111953
conv_477
Inić-Kanada A, Stojanović M, Miljković R, Stein E, Filipović A, Frohns A, Zoeller N, Kuratli J, Barisani-Asenbauer T, Borel N. Water-filtered Infrared A and visible light (wIRA/VIS) treatment reduces Chlamydia caviae-induced ocular inflammation and infectious load in a Guinea pig model of inclusion conjunctivitis. in Journal of Photochemistry and Photobiology B-Biology. 2020;209.
doi:10.1016/j.jphotobiol.2020.111953
conv_477 .
Inić-Kanada, Aleksandra, Stojanović, Marijana, Miljković, Radmila, Stein, Elisabeth, Filipović, Ana, Frohns, Antonia, Zoeller, Nadja, Kuratli, Jasmin, Barisani-Asenbauer, Talin, Borel, Nicole, "Water-filtered Infrared A and visible light (wIRA/VIS) treatment reduces Chlamydia caviae-induced ocular inflammation and infectious load in a Guinea pig model of inclusion conjunctivitis" in Journal of Photochemistry and Photobiology B-Biology, 209 (2020),
https://doi.org/10.1016/j.jphotobiol.2020.111953 .,
conv_477 .
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