Murine "inflammatory" and "patrolling" monocytes have specific functional specializations. In this issue of Immunity, Cros et al. (2010) characterize CD14(+) and CD14(dim)CD16(+) monocyte subpopulations as the human "inflammatory" and "patrolling" monocytes that, similarly to their mouse counterparts, are characterized by distinct functional properties.
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http://dx.doi.org/10.1016/j.immuni.2010.09.007 | DOI Listing |
Cell Immunol
January 2025
Educational and Scientific Centre "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, 2, Hlushkov Avenue, Kyiv 03022, Ukraine.
Bacteriophage-derived dsRNA (bp-dsRNA), also known as Larifan, is a poly-functional and wide-spectrum antiviral medication with potent interferonogenic activity. In the lungs of golden Syrian hamsters infected with SARS-CoV-2, Larifan substantially reduces viral load and decreases infection-induced pathological lesion severity. Alveolar macrophages (AM) are key sentinel cells in the lung, which play an important role in antiviral innate immune responses and, at the same time, can trigger infection-associated hyper-inflammatory response.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Centre for Respiratory Science and Health, School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC 3083, Australia.
Severe lower respiratory tract disease following influenza A virus (IAV) infection is characterized by excessive inflammation and lung tissue damage, and this can impair lung function. The effect of toll-like receptor 7 (TLR7), which detects viral RNA to initiate antiviral and proinflammatory responses to IAV, on lung function during peak infection and in the resolution phase is not fully understood. Using wild-type (WT) C57BL/6 and TLR7 knockout (TLR7 KO) mice, we found that IAV infection induced airway dysfunction in both genotypes, although in TLR7 KO mice, this dysfunction manifested later, did not affect lung tissue elastance and damping, and was associated with a different immune phenotype.
View Article and Find Full Text PDFBiology (Basel)
October 2024
Immunoregulation Unit, Institut Pasteur, Université Paris Cité, F-75015 Paris, France.
Cell adhesion regulates specific migratory patterns, location, communication with other cells, physical interactions with the extracellular matrix, and the establishment of effector programs. Proper immune control of cancer strongly depends on all these events occurring in a highly accurate spatiotemporal sequence. In response to cancer-associated inflammatory signals, effector immune cells navigating the bloodstream shift from their patrolling exploratory migration mode to establish adhesive interactions with vascular endothelial cells.
View Article and Find Full Text PDFSci Rep
September 2024
Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Amazonas (UFAM), Manaus, AM, Brazil.
SARS-CoV-2 caused the pandemic situation experienced since the beginning of 2020, and many countries faced the rapid spread and severe form of the disease. Mechanisms of interaction between the virus and the host were observed during acute phase, but few data are available when related to immunity dynamics in convalescents. We conducted a longitudinal study, with 51 healthy donors and 62 COVID-19 convalescent patients, which these had a 2-month follow-up after symptoms recovery.
View Article and Find Full Text PDFVirologie (Montrouge)
August 2024
Centre de recherche, Hôpital Ste Justine, Montréal, QC, Canada, Département de Microbiologie, infectiologie et immunologie, Université de Montréal, Montréal, QC, Canada.
While antiretroviral therapy (ART) has revolutionized the management of human immunodeficiency virus (HIV) and has enabled people living with HIV (PLWH) to achieve near-normal life expectancies, an HIV cure remains elusive due to the presence of HIV reservoirs. Furthermore, compared with individuals in the general population, PLWH support a higher burden of multimorbidity, including pulmonary diseases of both an infectious and non-infection nature, which may be a consequence of the formation of HIV reservoirs. Their gut, lymph nodes, brain, testes and lungs constitute important anatomic sites for the reservoirs.
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