Relationship between host survival and the type of immune response in different organs during disseminated candidiasis

Author(s):  
Cao Fei ◽  
Li Jiawen ◽  
Yan Xiaofeng ◽  
Wu Yanqing ◽  
Zhang Demei
2010 ◽  
Vol 78 (11) ◽  
pp. 4839-4849 ◽  
Author(s):  
Alexandra Correia ◽  
Ulrich Lermann ◽  
Luzia Teixeira ◽  
Filipe Cerca ◽  
Sofia Botelho ◽  
...  

ABSTRACTCandida albicanssecreted aspartyl proteinases (Saps) are considered virulence-associated factors. Several members of the Sap family were claimed to play a significant role in the progression of candidiasis established by the hematogenous route. This assumption was based on the observed attenuated virulence ofsap-null mutant strains. However, the exclusive contribution ofSAPgenes to their attenuated phenotype was not unequivocally confirmed, as the Ura status of these mutant strains could also have contributed to the attenuation. In this study, we have reassessed the importance ofSAP1toSAP6in a murine model of hematogenously disseminated candidiasis usingsap-null mutant strains not affected in theirURA3gene expression and compared their virulence phenotypes with those of Ura-blastersapmutants. The median survival time of BALB/c mice intravenously infected with a mutant strain lackingSAP1toSAP3was equivalent to that of mice infected with wild-type strain SC5314, while those infected with mutant strains lackingSAP5showed slightly extended survival times. Nevertheless, no differences could be observed between the wild type and a Δsap456mutant in their abilities to invade mouse kidneys. Likewise, a deficiency inSAP4toSAP6had no noticeable impact on the immune response elicited in the spleens and kidneys ofC. albicans-infected mice. These results contrast with the behavior of equivalent Ura-blaster mutants, which presented a significant reduction in virulence. Our results suggest that Sap1 to Sap6 do not play a significant role inC. albicansvirulence in a murine model of hematogenously disseminated candidiasis and that, in this model, Sap1 to Sap3 are not necessary for successfulC. albicansinfection.


Vaccine ◽  
2007 ◽  
Vol 25 (19) ◽  
pp. 3834-3840 ◽  
Author(s):  
Jue-Hee Lee ◽  
Ju Young Lee ◽  
Ji Hye Park ◽  
Hye Sil Jung ◽  
Ju Sun Kim ◽  
...  

1999 ◽  
Vol 37 (2) ◽  
pp. 123-129 ◽  
Author(s):  
B. R. Mignon ◽  
T. Leclipteux ◽  
CH. Focant ◽  
A. J. Nikkels ◽  
G. E. PIErard ◽  
...  

2015 ◽  
Vol 21 ◽  
pp. 93
Author(s):  
Merrell Magelli ◽  
Ronald Swerdloff ◽  
John Amory ◽  
Gregory Flippo ◽  
Wael Salameh ◽  
...  

Author(s):  
Barbara Kronsteiner ◽  
Panjaporn Chaichana ◽  
Manutsanun Sumonwiriya ◽  
Kemajitra Jenjaroen ◽  
Fazle Rabbi Chowdhury ◽  
...  

2004 ◽  
Vol 146 (4) ◽  
pp. 159-172 ◽  
Author(s):  
D. Müller-Doblies ◽  
S. Baumann ◽  
P. Grob ◽  
A. Hülsmeier ◽  
U. Müller-Doblies ◽  
...  

2015 ◽  
Vol 29 (3) ◽  
pp. 119-129 ◽  
Author(s):  
Richard J. Stevenson ◽  
Deborah Hodgson ◽  
Megan J. Oaten ◽  
Luba Sominsky ◽  
Mehmet Mahmut ◽  
...  

Abstract. Both disgust and disease-related images appear able to induce an innate immune response but it is unclear whether these effects are independent or rely upon a common shared factor (e.g., disgust or disease-related cognitions). In this study we directly compared these two inductions using specifically generated sets of images. One set was disease-related but evoked little disgust, while the other set was disgust evoking but with less disease-relatedness. These two image sets were then compared to a third set, a negative control condition. Using a wholly within-subject design, participants viewed one image set per week, and provided saliva samples, before and after each viewing occasion, which were later analyzed for innate immune markers. We found that both the disease related and disgust images, relative to the negative control images, were not able to generate an innate immune response. However, secondary analyses revealed innate immune responses in participants with greater propensity to feel disgust following exposure to disease-related and disgusting images. These findings suggest that disgust images relatively free of disease-related themes, and disease-related images relatively free of disgust may be suboptimal cues for generating an innate immune response. Not only may this explain why disgust propensity mediates these effects, it may also imply a common pathway.


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