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Brevier J, Gerbaud E, Borowczyk C, Grevelinger J, Laroche-Traineau J, Marais S, Jacobin-Valat MJ, Clofent-Sanchez G, Ottones F. Distinct functional phenotypes between major models of foamy macrophages: Consequences and impact in the field of therapeutic research. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ottones F, Borowczyk C, Laroche-Traineau J, Brevier J, Louradour F, Bouzier-Sore A, Gerbeaud E, Jacobin-Valat M, Clofent-Sanchez G. Autofluorescent Intracellular Nadh And Fad May Be Used As Biomarkers Of The Vulnerability Of The Atheromatous Plaque. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hage CH, Leclerc P, Brevier J, Fabert M, Le Nézet C, Kudlinski A, Héliot L, Louradour F. Towards two-photon excited endogenous fluorescence lifetime imaging microendoscopy. Biomed Opt Express 2018; 9:142-156. [PMID: 29359093 PMCID: PMC5772571 DOI: 10.1364/boe.9.000142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/16/2017] [Accepted: 12/04/2017] [Indexed: 05/12/2023]
Abstract
In situ fluorescence lifetime imaging microscopy (FLIM) in an endoscopic configuration of the endogenous biomarker nicotinamide adenine dinucleotide (NADH) has a great potential for malignant tissue diagnosis. Moreover, two-photon nonlinear excitation provides intrinsic optical sectioning along with enhanced imaging depth. We demonstrate, for the first time to our knowledge, nonlinear endogenous FLIM in a fibered microscope with proximal detection, applied to NADH in cultured cells, as a first step to a nonlinear endomicroscope, using a double-clad microstructured fiber with convenient fiber length (> 3 m) and excitation pulse duration (≈50 fs). Fluorescence photons are collected by the fiber inner cladding and we show that its contribution to the impulse response function (IRF), which originates from its intermodal and chromatic dispersions, is small (< 600 ps) and stable for lengths up to 8 m and allows for short lifetime measurements. We use the phasor representation as a quick visualization tool adapted to the endoscopy speed requirements.
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Affiliation(s)
- C. H. Hage
- Université de Limoges, XLIM, UMR CNRS 7252, 123 Avenue A. Thomas, 87060 Limoges, France
| | - P. Leclerc
- Université de Limoges, XLIM, UMR CNRS 7252, 123 Avenue A. Thomas, 87060 Limoges, France
| | - J. Brevier
- Université de Limoges, XLIM, UMR CNRS 7252, 123 Avenue A. Thomas, 87060 Limoges, France
| | - M. Fabert
- Université de Limoges, XLIM, UMR CNRS 7252, 123 Avenue A. Thomas, 87060 Limoges, France
| | - C. Le Nézet
- Univ. Lille, CNRS, UMR 8523 – PhLAM – Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - A. Kudlinski
- Univ. Lille, CNRS, UMR 8523 – PhLAM – Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - L. Héliot
- Univ. Lille, CNRS, UMR 8523 – PhLAM – Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - F. Louradour
- Université de Limoges, XLIM, UMR CNRS 7252, 123 Avenue A. Thomas, 87060 Limoges, France
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Ducourthial G, Leclerc P, Mansuryan T, Fabert M, Brevier J, Batrin R, Druilhe A, Habert R, Braud F, Kudlinski A, Louradour F. Codétection par endomicroscopie multiphotonique du collagène fibrillaire rénal et des flavines tubulaires sur la souris anesthésiée dans le modèle UUO. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Delanoë-Ayari H, Lenz P, Brevier J, Weidenhaupt M, Vallade M, Gulino D, Joanny JF, Riveline D. Periodic adhesive fingers between contacting cells. Phys Rev Lett 2004; 93:108102. [PMID: 15447454 DOI: 10.1103/physrevlett.93.108102] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2003] [Indexed: 05/24/2023]
Abstract
We study in detail the properties of fingers, a particular type of cell-cell adhesive structures appearing in adherens junctions. These periodic patterns break the symmetry of cell-cell contacts. We show that finger formation is driven by cadherin interactions and actin growth. A theoretical model is introduced in which the growth of fingers is limited by membrane tension. The steady shape and formation kinetics of fingers are experimentally measured and compared with the theoretical predictions.
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Affiliation(s)
- H Delanoë-Ayari
- Laboratoire de spectrométrie physique (CNRS), UMR 5588, Université Joseph Fourier, Saint-Martin d'Hères, France
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