Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection.
This study aimed to investigate the immunological mechanisms involved in the gender distinct incidence of paracoccidioidomycosis (pcm), an endemic systemic mycosis in Latin America, which is at least 10 times more frequent in men than in women. Then, we compared the immune response of male and femal...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2010-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC2873977?pdf=render |
| _version_ | 1819062174007427072 |
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| author | Camila Figueiredo Pinzan Luciana Pereira Ruas Anália Sulamita Casabona-Fortunato Fernanda Caroline Carvalho Maria-Cristina Roque-Barreira |
| author_facet | Camila Figueiredo Pinzan Luciana Pereira Ruas Anália Sulamita Casabona-Fortunato Fernanda Caroline Carvalho Maria-Cristina Roque-Barreira |
| author_sort | Camila Figueiredo Pinzan |
| collection | DOAJ |
| description | This study aimed to investigate the immunological mechanisms involved in the gender distinct incidence of paracoccidioidomycosis (pcm), an endemic systemic mycosis in Latin America, which is at least 10 times more frequent in men than in women. Then, we compared the immune response of male and female mice to Paracoccidioides brasiliensis infection, as well as the influence in the gender differences exerted by paracoccin, a P. brasiliensis component with carbohydrate recognition property. High production of Th1 cytokines and T-bet expression have been detected in the paracoccin stimulated cultures of spleen cells from infected female mice. In contrast, in similar experimental conditions, cells from infected males produced higher levels of the Th2 cytokines and expressed GATA-3. Macrophages from male and female mice when stimulated with paracoccin displayed similar phagocytic capability, while fungicidal activity was two times more efficiently performed by macrophages from female mice, a fact that was associated with 50% higher levels of nitric oxide production. In order to evaluate the role of sexual hormones in the observed gender distinction, we have utilized mice that have been submitted to gonadectomy followed by inverse hormonal reconstitution. Spleen cells derived from castrated males reconstituted with estradiol have produced higher levels of IFN-gamma (1291+/-15 pg/mL) and lower levels of IL-10 (494+/-38 pg/mL), than normal male in response to paracoccin stimulus. In contrast, spleen cells from castrated female mice that had been treated with testosterone produced more IL-10 (1284+/-36 pg/mL) and less IFN-gamma (587+/-14 pg/mL) than cells from normal female. In conclusion, our results reveal that the sexual hormones had a profound effect on the biology of immune cells, and estradiol favours protective responses to P. brasiliensis infection. In addition, fungal components, such as paracoccin, may provide additional support to the gender dimorphic immunity that marks P. brasiliensis infection. |
| first_indexed | 2024-12-21T14:54:35Z |
| format | Article |
| id | doaj.art-508af91a075349068f5af28c4c7340ce |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-21T14:54:35Z |
| publishDate | 2010-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-508af91a075349068f5af28c4c7340ce2022-12-21T18:59:47ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-01-0155e1075710.1371/journal.pone.0010757Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection.Camila Figueiredo PinzanLuciana Pereira RuasAnália Sulamita Casabona-FortunatoFernanda Caroline CarvalhoMaria-Cristina Roque-BarreiraThis study aimed to investigate the immunological mechanisms involved in the gender distinct incidence of paracoccidioidomycosis (pcm), an endemic systemic mycosis in Latin America, which is at least 10 times more frequent in men than in women. Then, we compared the immune response of male and female mice to Paracoccidioides brasiliensis infection, as well as the influence in the gender differences exerted by paracoccin, a P. brasiliensis component with carbohydrate recognition property. High production of Th1 cytokines and T-bet expression have been detected in the paracoccin stimulated cultures of spleen cells from infected female mice. In contrast, in similar experimental conditions, cells from infected males produced higher levels of the Th2 cytokines and expressed GATA-3. Macrophages from male and female mice when stimulated with paracoccin displayed similar phagocytic capability, while fungicidal activity was two times more efficiently performed by macrophages from female mice, a fact that was associated with 50% higher levels of nitric oxide production. In order to evaluate the role of sexual hormones in the observed gender distinction, we have utilized mice that have been submitted to gonadectomy followed by inverse hormonal reconstitution. Spleen cells derived from castrated males reconstituted with estradiol have produced higher levels of IFN-gamma (1291+/-15 pg/mL) and lower levels of IL-10 (494+/-38 pg/mL), than normal male in response to paracoccin stimulus. In contrast, spleen cells from castrated female mice that had been treated with testosterone produced more IL-10 (1284+/-36 pg/mL) and less IFN-gamma (587+/-14 pg/mL) than cells from normal female. In conclusion, our results reveal that the sexual hormones had a profound effect on the biology of immune cells, and estradiol favours protective responses to P. brasiliensis infection. In addition, fungal components, such as paracoccin, may provide additional support to the gender dimorphic immunity that marks P. brasiliensis infection.http://europepmc.org/articles/PMC2873977?pdf=render |
| spellingShingle | Camila Figueiredo Pinzan Luciana Pereira Ruas Anália Sulamita Casabona-Fortunato Fernanda Caroline Carvalho Maria-Cristina Roque-Barreira Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection. PLoS ONE |
| title | Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection. |
| title_full | Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection. |
| title_fullStr | Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection. |
| title_full_unstemmed | Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection. |
| title_short | Immunological basis for the gender differences in murine Paracoccidioides brasiliensis infection. |
| title_sort | immunological basis for the gender differences in murine paracoccidioides brasiliensis infection |
| url | http://europepmc.org/articles/PMC2873977?pdf=render |
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