Lung inflammation and interstitial fibrosis by targeted alveolar epithelial type I cell death.

Introduction: The pathogenesis of chronic lung diseases is multifaceted with a major role of recurrent micro-injuries of the epithelium. While several reports clearly indicated a prominent role for surfactant-producing alveolar epithelial type 2 (AT2) cells, the contribution of gas exchange-permissive alveolar epithelial type 1 (AT1) cells has not been addressed yet. Here, we investigated whether repeated injury of AT1 cells leads to inflammation and interstitial fibrosis.

Improvement of Antioxidant Defences in Keratinocytes Grown in Physioxia: Comparison of 2D and 3D Models.

Keratinocytes prevent skin photoaging by ensuring the defence against oxidative stress, an excessive production of reactive oxygen species (ROS). They are localized within the epidermis where the oxygen level (1-3% O), named physioxia, is low compared to other organs. Oxygen is essential for life but also generates ROS.

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Le 190 is a sexual health center in Paris founded in 2010. Its initial objective is to reduce the HIV/AIDS epidemic locally among men who have sex with men (MSM) through multidisciplinary support rooted in the reality of the sexuality and affective life of HIV-positive and HIV-negative MSM. Because of its constant concern for overall gay health and its community character, its activity has diversified and has enabled it to be a forerunner in both care and care pathways, on both the medical and regulatory aspects.

Intrahippocampal Inoculation of Aβ Peptide in Rat as a Model of Alzheimer's Disease Identified MicroRNA-146a-5p as Blood Marker with Anti-Inflammatory Function in Astrocyte Cells.

Circulating microRNAs (miRNAs) have aroused a lot of interest as reliable blood diagnostic biomarkers of Alzheimer's disease (AD). Here, we investigated the panel of expressed blood miRNAs in response to aggregated Aβ peptides infused in the hippocampus of adult rats to mimic events of the early onset of non-familial AD disorder. Aβ peptides in the hippocampus led to cognitive impairments associated with an astrogliosis and downregulation of circulating miRNA-146a-5p, -29a-3p, -29c-3p, -125b-5p, and-191-5p.