This study aims to evaluate specialized proresolving mediators (SPM) concentrations for the first time in subjects infected with Pneumocystis jirovecii. SPM will be measured in blood and urine in patients with favourable or unfavourable outcome of Pneumocystis pneumonia and in patients colonized by Pneumocystis jirovecii. The hypothesis is that low levels of SPM in the blood could be predictive of a negative outcome of pneumocystosis.
Pneumocystis pneumonia is a severe fungal disease threatening immunosuppressed subjects such as patients suffering from AIDS, oncohematological diseases or solid organ transplanted patients. The disease is characterized by an important inflammation in the infected lungs which is mainly responsible for lungs lesions. Despite an adequate treatment introduction, mortality is still around 20% which can not be explained by a treatment resistance. Specialized proresolving mediators (SPM), including lipoxins, maresins, protectins and resolvins, are newly described molecules implicated in the active process of inflammation resolution. The investigators hypothesis in this study is that high levels of SPM could be predictive of a good resolution of the harmful inflammation, thus a good evolution of the disease, in adequate pneumocystosis therapy conditions. On the contrary, low levels of SPM could be predictive of an unfavourable outcome despite a treatment targeting Pneumocystis jirovecii
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
66
6 blood sample, 3 at J0 and 3 at J7 ( 2 tubes EDTA of 7mL, 1 tube Blood RNA of 3 mL)
2 urine sample (1 at J0 and 1 at J7)
Institut Fédératif de Biologie (IFB), CHU - Hôpital Purpan
Toulouse, France
14,15-DHET blood level at the inclusio
variation of 14,15-DHET blood level at inclusion between each group
Time frame: Day 0
14,15-DHET blood level
variation of 14,15-DHET blood level at day 7 between each group
Time frame: Day 7
14,15-DHET urine level
variation of 14,15-DHET urine level at inclusion ad day 7 between each group
Time frame: Day 0 and Day 7
Specialized Pro-Resolving Mediators in blood
Specialized Pro-Resolving Mediators in blood at inclusion and day 7 between each group
Time frame: Day 0 and Day 7
Specialized Pro-Resolving Mediators in urine
Specialized Pro-Resolving Mediators in urine at inclusion and day 7each between group
Time frame: Day 0 and Day 7
Expression levels of the SPM enzymes
Expression levels of the enzymes implicated in SPM synthesis and catabolism in blood at D0 and day 7
Time frame: Day 0 and day 7
Inflammatory blood profile
Inflammatory blood profile with composite criteria pro-inflammatory and anti-inflammatory cytokines levels measured by flow cytometry
Time frame: Day 0 and day 7
Immune cells profile
immune cell proportions in blood measured by flow cytometry
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Time frame: Day 0 and day 7