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Dahlmann-Noor A, Bailly M. Shining a light on foveal development after congenital cataract surgery. Ann Transl Med 2022; 10:1045. [PMID: 36330396 PMCID: PMC9622496 DOI: 10.21037/atm-2022-31] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/31/2022] [Indexed: 07/21/2023]
Affiliation(s)
- Annegret Dahlmann-Noor
- Department of Paediatric Ophthalmology, NIHR Moorfields Biomedical Research Centre, London, UK
| | - Maryse Bailly
- Department of Cell Biology, Institute of Ophthalmology, University College London, UK
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2
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Ghieh F, Barbotin AL, Swierkowski-Blanchard N, Leroy C, Fortemps J, Gerault C, Hue C, Mambu Mambueni H, Jaillard S, Albert M, Bailly M, Izard V, Molina-Gomes D, Marcelli F, Prasivoravong J, Serazin V, Dieudonne MN, Delcroix M, Garchon HJ, Louboutin A, Mandon-Pepin B, Ferlicot S, Vialard F. OUP accepted manuscript. Hum Reprod 2022; 37:1334-1350. [PMID: 35413094 PMCID: PMC9156845 DOI: 10.1093/humrep/deac057] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 03/07/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- F Ghieh
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas, France
- École Nationale Vétérinaire d’Alfort, BREED, Maisons-Alfort, France
| | - A L Barbotin
- Institut de Biologie de la Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, Centre Hospitalier et Universitaire, Lille, France
| | - N Swierkowski-Blanchard
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas, France
- École Nationale Vétérinaire d’Alfort, BREED, Maisons-Alfort, France
- Département de Gynécologie Obstétrique, CHI de Poissy/Saint-Germain-en-Laye, Poissy, France
| | - C Leroy
- Institut de Biologie de la Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, Centre Hospitalier et Universitaire, Lille, France
| | - J Fortemps
- Service d’Anatomie Pathologique, CHI de Poissy/Saint-Germain-en-Laye, Saint-Germain-en-Laye, France
| | - C Gerault
- Département de Génétique, Laboratoire de Biologie Médicale, CHI de Poissy/Saint-Germain-en-Laye, Poissy, France
| | - C Hue
- Department of Biotechnology and Health, UVSQ, Université Paris-Saclay, Inserm UMR 1173, Montigny-le-Bretonneux, France
| | - H Mambu Mambueni
- Department of Biotechnology and Health, UVSQ, Université Paris-Saclay, Inserm UMR 1173, Montigny-le-Bretonneux, France
| | - S Jaillard
- Service de Cytogénétique, CHU Rennes, Rennes, France
- INSERM, EHESP, IRSET—UMR_S 1085, Université Rennes 1, Rennes, France
| | - M Albert
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas, France
- École Nationale Vétérinaire d’Alfort, BREED, Maisons-Alfort, France
| | - M Bailly
- Département de Gynécologie Obstétrique, CHI de Poissy/Saint-Germain-en-Laye, Poissy, France
| | - V Izard
- Service d’Urologie, AP-HP, Université Paris-Saclay, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - D Molina-Gomes
- Département de Génétique, Laboratoire de Biologie Médicale, CHI de Poissy/Saint-Germain-en-Laye, Poissy, France
| | - F Marcelli
- Institut de Biologie de la Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, Centre Hospitalier et Universitaire, Lille, France
| | - J Prasivoravong
- Institut de Biologie de la Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, Centre Hospitalier et Universitaire, Lille, France
| | - V Serazin
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas, France
- École Nationale Vétérinaire d’Alfort, BREED, Maisons-Alfort, France
- Département de Génétique, Laboratoire de Biologie Médicale, CHI de Poissy/Saint-Germain-en-Laye, Poissy, France
| | - M N Dieudonne
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas, France
- École Nationale Vétérinaire d’Alfort, BREED, Maisons-Alfort, France
| | - M Delcroix
- Département de Génétique, Laboratoire de Biologie Médicale, CHI de Poissy/Saint-Germain-en-Laye, Poissy, France
| | - H J Garchon
- Department of Biotechnology and Health, UVSQ, Université Paris-Saclay, Inserm UMR 1173, Montigny-le-Bretonneux, France
| | - A Louboutin
- Service d’Anatomie Pathologique, CHI de Poissy/Saint-Germain-en-Laye, Saint-Germain-en-Laye, France
| | - B Mandon-Pepin
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas, France
- École Nationale Vétérinaire d’Alfort, BREED, Maisons-Alfort, France
| | - S Ferlicot
- Service d’Anatomie Pathologique, AP-HP, Université Paris-Saclay, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - F Vialard
- Correspondence address. Tel: +33-139-274-700; E-mail:
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Bailly M, Perret C, Truchot N, Penard L, Drevon-Gaillot E. Retrospective analysis on the tolerability of non-standard used vehicles in non-clinical studies. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00659-7] [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: 11/26/2022]
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Bailly M, Queuille E, Juillard-Condat B, Paubel P. [Comparative analysis of the financing of follow-up and rehabilitation care institutions and public mental health institutions: Application for innovative and expensive drugs]. Ann Pharm Fr 2021; 79:690-699. [PMID: 33713639 DOI: 10.1016/j.pharma.2021.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 02/15/2021] [Accepted: 03/01/2021] [Indexed: 10/21/2022]
Abstract
Pharmacotherapeutic care is now expanding in public mental health institutions. Annual grants are funding the public psychiatric field, hindering access to therapeutic innovation and expensive medications due to long length of stay. On the threshold of the French Healthcare & Social Services Ministry "Ma Santé 2022" plan ("My Health 2022"), there is a risk of altering the continuum of care because of the complexity of the financing of certain high added value therapies. Despite a desire to adapt the system to meet constantly changing health needs, no actions have been taken to this date in psychiatry, with no funds being allocated for valuable medication, in contrary to follow-up care and rehabilitation structures, to our knowledge. This reinforces the discrepancy with the evolution of research, and further widens the gap in inequalities between health sectors. Optimising the funding of expensive medicines in psychiatry would make it possible to reduce the stranglehold of current allocations. Following the example of recent reforms in the follow-up care and rehabilitation structures, extra funds for high value-added therapies would make it possible to reduce complex medical decisions: from prevention to reintegration, patient care continuity would be vastly guaranteed.
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Affiliation(s)
- M Bailly
- Service pharmacie, centre hospitalier spécialisé Charles-Perrens, 33076 Bordeaux, France.
| | - E Queuille
- Service pharmacie, centre hospitalier spécialisé Charles-Perrens, 33076 Bordeaux, France
| | - B Juillard-Condat
- Inserm UMR 1027, université Toulouse III, 31400 Toulouse, France; Service pharmacie, centre hospitalier universitaire de Toulouse, 31400 Toulouse, France
| | - P Paubel
- Service évaluations pharmaceutiques et bon usage, AGEPS, AP-HP, 75005 Paris, France; Faculté de pharmacie de Paris, institut droit et santé, Inserm UMR S 1145, université de Paris, 75006 Paris, France
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Alzahofi N, Welz T, Robinson CL, Page EL, Briggs DA, Stainthorp AK, Reekes J, Elbe DA, Straub F, Kallemeijn WW, Tate EW, Goff PS, Sviderskaya EV, Cantero M, Montoliu L, Nedelec F, Miles AK, Bailly M, Kerkhoff E, Hume AN. Rab27a co-ordinates actin-dependent transport by controlling organelle-associated motors and track assembly proteins. Nat Commun 2020; 11:3495. [PMID: 32661310 PMCID: PMC7359353 DOI: 10.1038/s41467-020-17212-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 06/04/2020] [Indexed: 11/09/2022] Open
Abstract
Cell biologists generally consider that microtubules and actin play complementary roles in long- and short-distance transport in animal cells. On the contrary, using melanosomes of melanocytes as a model, we recently discovered that the motor protein myosin-Va works with dynamic actin tracks to drive long-range organelle dispersion in opposition to microtubules. This suggests that in animals, as in yeast and plants, myosin/actin can drive long-range transport. Here, we show that the SPIRE-type actin nucleators (predominantly SPIRE1) are Rab27a effectors that co-operate with formin-1 to generate actin tracks required for myosin-Va-dependent transport in melanocytes. Thus, in addition to melanophilin/myosin-Va, Rab27a can recruit SPIREs to melanosomes, thereby integrating motor and track assembly activity at the organelle membrane. Based on this, we suggest a model in which organelles and force generators (motors and track assemblers) are linked, forming an organelle-based, cell-wide network that allows their collective activity to rapidly disperse the population of organelles long-distance throughout the cytoplasm.
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Affiliation(s)
- Noura Alzahofi
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Tobias Welz
- University Hospital Regensburg, Regensburg, Germany
| | | | - Emma L Page
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Deborah A Briggs
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Amy K Stainthorp
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - James Reekes
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - David A Elbe
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Felix Straub
- University Hospital Regensburg, Regensburg, Germany
| | - Wouter W Kallemeijn
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, London, W12 0BZ, UK
| | - Edward W Tate
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, London, W12 0BZ, UK
| | - Philip S Goff
- Cell Biology and Genetics Research Centre, St. George's, University of London, London, SW17 0RE, UK
| | - Elena V Sviderskaya
- Cell Biology and Genetics Research Centre, St. George's, University of London, London, SW17 0RE, UK
| | - Marta Cantero
- Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, 28049, Spain
- CIBERER-ISCIII, Madrid, Spain
| | - Lluis Montoliu
- Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, 28049, Spain
- CIBERER-ISCIII, Madrid, Spain
| | - Francois Nedelec
- Sainsbury Laboratory, Cambridge University, Cambridge, CB2 1LR, UK
| | - Amanda K Miles
- John van Geest Cancer Research Centre, Nottingham Trent University, Nottingham, NG11 8NS, UK
| | - Maryse Bailly
- UCL Institute of Ophthalmology, 11-43 Bath St, London, EC1V 9EL, UK
| | | | - Alistair N Hume
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2UH, UK.
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Thibault F, Bailly M, Le Rouzic G, Metrard G. Clinical evaluation of General Electric new Swiftscan solution in bone scintigraphy on NaI-camera: A head to head comparison with Siemens Symbia. PLoS One 2019; 14:e0222490. [PMID: 31536519 PMCID: PMC6752842 DOI: 10.1371/journal.pone.0222490] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 08/30/2019] [Indexed: 11/29/2022] Open
Abstract
PURPOSE The General Electric (GE) Swiftscan solution combines a new Low Energy High Resolution and Sensitivity collimator (LEHRS) with image processing (Clarity 2D) and tomographic step and shoot continuous mode. The aim of this study was to compare clinical and physical performances of this new technology in bone scintigraphy. METHODS Physical phantom measurements were performed using GE LEHRS, GE Low Energy High Resolution (LEHR) and Siemens LEHR collimators. These measurements were associated with a prospective clinical study. Sixty-seven patients referred for bone scintigraphy were enrolled from February to July 2018. Each patient underwent two acquisitions consecutively on GE and Siemens gamma camera, using respectively Swiftscan solution and LEHR collimator. RESULTS On planar acquisitions, maximum sensitivity was 100 cts/MBq for Siemens LEHR. GE SwiftScan LEHRS and GE LEHR maximum sensitivity were respectively 9% and 22% lower. Using Clarity 2D, GE Swiftscan LEHRS spatial resolution was the best with 9.2 mm versus 10.1 mm and 10.6 mm for GE LEHR and Siemens LEHR collimators. In tomographic mode, the sensitivity of GE Swiftscan solution was superior to both LEHR systems (16% and 25% respectively for Siemens and GE). There was no significant difference in spatial resolution. In clinical use, signal was higher on Siemens system and noise was lower on GE Swiftscan solution. Contrast-to-noise ratios were not significantly different between the two systems. There was a significant image quality improvement with GE SwiftScan in planar images and in whole body scan. No significant difference in image quality was observed on SPECT images. CONCLUSION New GE SwiftScan collimator design improved sensitivity compared to "classical" GE LEHR collimator without compromising resolution. GE SwiftScan solution enhances planar image quality with a better Clarity 2D resolution recovery and noise treatment. In SPECT mode, GE SwiftScan solution improves volumetric sensitivity without significant impact on image quality, and could lead to time or dose reduction.
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Affiliation(s)
- F. Thibault
- Nuclear Medicine Department, CHR Orléans, ORLEANS, FRANCE
| | - M. Bailly
- Nuclear Medicine Department, CHR Orléans, ORLEANS, FRANCE
| | - G. Le Rouzic
- Nuclear Medicine Department, CHR Orléans, ORLEANS, FRANCE
| | - G. Metrard
- Nuclear Medicine Department, CHR Orléans, ORLEANS, FRANCE
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7
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Yang IH, Rose GE, Ezra DG, Bailly M. Macrophages promote a profibrotic phenotype in orbital fibroblasts through increased hyaluronic acid production and cell contractility. Sci Rep 2019; 9:9622. [PMID: 31270379 PMCID: PMC6610127 DOI: 10.1038/s41598-019-46075-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 06/21/2019] [Indexed: 12/29/2022] Open
Abstract
Graves’ orbitopathy (GO) is an autoimmune inflammatory disease affecting the orbit. Orbital fibroblasts are a key component in GO pathogenesis, which includes inflammation, adipogenesis, hyaluronic acid (HA) secretion, and fibrosis. Macrophages are thought to participate in the immunological stage of GO, but whether they can directly affect the fibroblasts phenotype and modulate disease progression is unknown. We previously showed that GO adipogenic and fibrotic phenotypes could be modelled in a pseudo-physiological 3D environment in vitro. Here, we introduced macrophages in this 3D culture model to investigate role for macrophages in modulating adipogenesis, HA production, and contractility in orbital fibroblasts. Macrophages had a minimal effect on lipid droplet formation in fibroblasts, but significantly increased HA production and cell contractility, suggesting that they may promote the fibrotic phenotype. This effect was found to be mediated at least in part through phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K) activation and linked to an increase in actin polymerization and protrusive activity in fibroblasts. Overall our work shows for the first time a direct role for macrophages in modulating the fibroblasts’ phenotype in GO, supporting a role for macrophages in the progression of the fibrotic phenotype through induction of HA production and stimulation of the contractile phenotype in orbital fibroblasts.
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Affiliation(s)
- I-Hui Yang
- UCL Institute of Ophthalmology, London, EC1V 9EL, UK.,Department of Ophthalmology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Geoffrey E Rose
- Department of Adnexal Surgery, Moorfields Eye Hospital, London, EC1V 2PD, UK
| | - Daniel G Ezra
- UCL Institute of Ophthalmology, London, EC1V 9EL, UK.,Department of Adnexal Surgery, Moorfields Eye Hospital, London, EC1V 2PD, UK.,NIHR Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital, City Road, London, EC1V 2PD, UK
| | - Maryse Bailly
- UCL Institute of Ophthalmology, London, EC1V 9EL, UK.
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Thibault F, Metrard G, Courtehoux M, Ribeiro MJ, Bailly M. 181Added value of regional coronary flow reserve analysis during myocardial perfusion scintigraphy performed on cadmium-zinc-telluride camera: about one case. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez137.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- F Thibault
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
| | - G Metrard
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
| | | | | | - M Bailly
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
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9
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Bailly M, Thibault F, Courtehoux M, Metrard G, Ribeiro MJ. 183The value of coronary flow reserve evaluation during myocardial perfusion imaging on a cadmium-zinc-telluride camera of symptomatic diabetic patients: about 2 cases of microvascular dysfunction. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez137.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Bailly
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
| | - F Thibault
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
| | | | - G Metrard
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
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Bailly M, Thibault F, Courtehoux M, Metrard G, Ribeiro MJ. 182High coronary calcium score does not mean reduced coronary flow reserve: about SPECT clinical cases. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez137.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Bailly
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
| | - F Thibault
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
| | | | - G Metrard
- CHR ORLEANS, Nuclear Medicine, ORLEANS, France
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Abstract
Many chronic wounds exhibit high matrix metalloproteinase (MMP) activity that impedes the normal wound healing process. Intradermal delivery (IDD) of sub-antimicrobial concentrations of doxycycline, as an MMP inhibitor, could target early stages of chronic wound development and inhibit further wound progression. To deliver doxycycline intradermally, the skin barrier must be disrupted. Microneedle rollers offer a minimally invasive technique to penetrate the skin by creating multiple microchannels that act as temporary conduits for drugs to diffuse through. In this study, an innovative and facile approach for delivery of doxycycline across Strat-MTM membrane was investigated using microneedle rollers. The quantity and rate of doxycycline diffusing through the micropores directly correlated with increasing microneedle lengths (250, 500 and 750 μm). Treatment of Strat-MTM with microneedle rollers resulted in a reduction in fibroblast-mediated collagen gel contraction and MMP activity compared with untreated Strat-MTM. Our results show that treatment of an epidermal mimetic with microneedle rollers provides sufficient permeabilization for doxycycline diffusion and inhibition of MMP activity. We conclude that microneedle rollers are a promising, clinically ready tool suitable for delivery of doxycycline intradermally to treat chronic wounds.
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Affiliation(s)
- Abbie Omolu
- a Applied Biomedical Engineering Group, Division of Medicine , University College London , London , UK
| | | | - Richard M Day
- a Applied Biomedical Engineering Group, Division of Medicine , University College London , London , UK
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Hatoum I, Bellon L, Swierkowski N, Ouazana M, Bouba S, Fathallah K, Paillusson B, Bailly M, Boitrelle F, Alter L, Bergère M, Selva J, Wainer R. Disparities in reproductive outcomes according to the endometrial preparation protocol in frozen embryo transfer : The risk of early pregnancy loss in frozen embryo transfer cycles. J Assist Reprod Genet 2017; 35:425-429. [PMID: 29110260 DOI: 10.1007/s10815-017-1078-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 10/24/2017] [Indexed: 12/19/2022] Open
Abstract
PURPOSE The purpose of this study was to determine the effect of stimulated and artificial endometrial preparation protocols on reproductive outcomes in frozen embryo transfer (FET) cycles. METHODS We performed a retrospective study of 1926 FET cycles over a 3.5-year period in the Fertility Unit at a University Hospital. Stimulated and artificial protocols were used for endometrial preparation. The embryos for FET were obtained from either in vitro fertilization or intracytoplasmic sperm injection cycles. Live birth rate and early pregnancy loss rates were retrospectively compared. In artificial protocols, oral or vaginal administration of oestradiol 2 mg two or three times a day was followed by vaginal supplementation with progesterone 200 mg two or three times a day. In stimulated protocols, recombinant follicle-stimulating hormone was administered from day 4 onward. Vaginal ultrasound was used for endometrial and ovarian monitoring. A pregnancy test was performed 14 days after FET. If it was positive, oestradiol and progesterone were administered up until the 12th week of gestation in artificial cycles. We defined early pregnancy losses as biochemical pregnancies (preclinical losses) and miscarriages. RESULTS Data on 865 artificial cycles (45% of the total) and 1061 stimulated cycles (55%) were collected. Early pregnancy loss rate was significantly lower for stimulated cycles (34.2%) than for artificial cycles (56.9%), and the live birth rate was significantly higher for stimulated cycles (59.7%) than for artificial cycles (29.1%). CONCLUSION In frozen embryo transfer, artificial cycles were associated with more early pregnancy loss and lower live birth rate than stimulated cycles.
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Affiliation(s)
- I Hatoum
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - L Bellon
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - N Swierkowski
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - M Ouazana
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - S Bouba
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - K Fathallah
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - B Paillusson
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - M Bailly
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France
| | - F Boitrelle
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France.,EA7404 "Gametes, Implantation, Gestation" Research Unit, University of Versailles Saint Quentin en Yvelines - Paris Saclay, 78180, Montigny-le-Bretonneux, France
| | - L Alter
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France.,EA7404 "Gametes, Implantation, Gestation" Research Unit, University of Versailles Saint Quentin en Yvelines - Paris Saclay, 78180, Montigny-le-Bretonneux, France
| | - M Bergère
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France.,EA7404 "Gametes, Implantation, Gestation" Research Unit, University of Versailles Saint Quentin en Yvelines - Paris Saclay, 78180, Montigny-le-Bretonneux, France
| | - J Selva
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France.,EA7404 "Gametes, Implantation, Gestation" Research Unit, University of Versailles Saint Quentin en Yvelines - Paris Saclay, 78180, Montigny-le-Bretonneux, France.,Institut de Recherche en Santé de la Femme (Woman's Health Research Institute), 78180, Montigny-le-Bretonneux, France
| | - R Wainer
- Fertility Unit, Poissy-Saint-Germain-en-Laye General Hospital, 78303, Poissy, France. .,EA7404 "Gametes, Implantation, Gestation" Research Unit, University of Versailles Saint Quentin en Yvelines - Paris Saclay, 78180, Montigny-le-Bretonneux, France. .,Institut de Recherche en Santé de la Femme (Woman's Health Research Institute), 78180, Montigny-le-Bretonneux, France. .,Unité Clinique d'Assistance Médicale à la Procréation, CHI de Poissy/Saint-Germain-en-Laye, rue du champ gaillard, 78303, Poissy, France.
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Rioux JA, Killick-Kendrick R, Leaney AJ, Young CJ, Turner DP, Lanotte G, Bailly M. Écologie des Leishmanioses dans le sud de la France. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/parasite/1979544401] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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16
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Mohamed-Ahmed AHA, Lockwood A, Li H, Bailly M, Khaw PT, Brocchini S. An Ilomastat-CD Eye Drop Formulation to Treat Ocular Scarring. Invest Ophthalmol Vis Sci 2017; 58:3425-3431. [PMID: 28692737 PMCID: PMC5713897 DOI: 10.1167/iovs.16-21377] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Purpose The purpose of this study was to develop a topical matrix metalloproteinase inhibitor preparation for antiscarring therapy. Methods The broad spectrum matrix metalloproteinase inhibitor ilomastat was formulated using 2-hydroxypropyl-β-cyclodextrin in aqueous solution. In vitro activity of ilomastat-cyclodextrin (ilomastat-CD) was examined using fibroblasts seeded in collagen. Permeation of ilomastat-CD eye drop through pig eye conjunctiva was confirmed using Franz diffusion cells. Ilomastat-CD eye drop was applied to rabbit eyes in vivo, and the distribution of ilomastat in ocular tissues and fluids was determined by liquid chromatography-mass spectroscopy. Results The aqueous solubility of ilomastat-CD was ∼1000 μg/mL in water and 1400 μg/mL in PBS (pH 7.4), which is greater than ilomastat alone (140 and 160 μg/mL in water and PBS, respectively). The in vitro activity of ilomastat-CD to inhibit collagen contraction in the presence of human Tenon fibroblast cells was unchanged compared to uncomplexed ilomastat. Topically administered ilomastat-CD in vivo to rabbit eyes resulted in a therapeutic concentration of ilomastat being present in the sclera and conjunctiva and within the aqueous humor. Conclusions Ilomastat-CD has the potential to be formulated as an eye drop for use as an antifibrotic, which may have implications for the prevention of scarring in many settings, for example glaucoma filtration surgery.
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Affiliation(s)
- Abeer H A Mohamed-Ahmed
- UCL School of Pharmacy, London, United Kingdom 2UCL Institute of Ophthalmology, London, United Kingdom
| | - Alastair Lockwood
- UCL School of Pharmacy, London, United Kingdom 2UCL Institute of Ophthalmology, London, United Kingdom
| | - He Li
- UCL Institute of Ophthalmology, London, United Kingdom
| | - Maryse Bailly
- UCL Institute of Ophthalmology, London, United Kingdom
| | - Peng T Khaw
- UCL Institute of Ophthalmology, London, United Kingdom 3The National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
| | - Steve Brocchini
- UCL School of Pharmacy, London, United Kingdom 2UCL Institute of Ophthalmology, London, United Kingdom
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Yu-Wai-Man C, Spencer-Dene B, Lee RMH, Hutchings K, Lisabeth EM, Treisman R, Bailly M, Larsen SD, Neubig RR, Khaw PT. Local delivery of novel MRTF/SRF inhibitors prevents scar tissue formation in a preclinical model of fibrosis. Sci Rep 2017; 7:518. [PMID: 28364121 PMCID: PMC5428058 DOI: 10.1038/s41598-017-00212-w] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/14/2017] [Indexed: 11/09/2022] Open
Abstract
The myocardin-related transcription factor/serum response factor (MRTF/SRF) pathway represents a promising therapeutic target to prevent fibrosis. We have tested the effects of new pharmacological inhibitors of MRTF/SRF signalling in a preclinical model of fibrosis. CCG-222740, a novel MRTF/SRF inhibitor, markedly decreased SRF reporter gene activity and showed a greater inhibitory effect on MRTF/SRF target genes than the previously described MRTF-A inhibitor CCG-203971. CCG-222740 was also five times more potent, with an IC50 of 5 μM, in a fibroblast-mediated collagen contraction assay, was less cytotoxic, and a more potent inhibitor of alpha-smooth muscle actin protein expression than CCG-203971. Local delivery of CCG-222740 and CCG-203971 in a validated and clinically relevant rabbit model of scar tissue formation after glaucoma filtration surgery increased the long-term success of the surgery by 67% (P < 0.0005) and 33% (P < 0.01), respectively, and significantly decreased fibrosis and scarring histologically. Unlike mitomycin-C, neither CCG-222740 nor CCG-203971 caused any detectable epithelial toxicity or systemic side effects with very low drug levels measured in the aqueous, vitreous, and serum. We conclude that inhibitors of MRTF/SRF-regulated gene transcription such as CCG-222740, potentially represent a new therapeutic strategy to prevent scar tissue formation in the eye and other tissues.
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Affiliation(s)
- Cynthia Yu-Wai-Man
- UCL Institute of Ophthalmology, London, UK. .,National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK. .,Signalling and Transcription Group, Francis Crick Institute, London, UK.
| | | | - Richard M H Lee
- National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK
| | - Kim Hutchings
- Vahlteich Medicinal Chemistry Core, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Erika M Lisabeth
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Richard Treisman
- Signalling and Transcription Group, Francis Crick Institute, London, UK
| | | | - Scott D Larsen
- Vahlteich Medicinal Chemistry Core, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Richard R Neubig
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Peng T Khaw
- National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK
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Belaisch-Allart J, Ouazana M, Bailly M, Selva J, Kulski O, Boitrelle F. Âge du père en assistance médicale à la procréation : faut-il une limite ? ACTA ACUST UNITED AC 2016; 44:712-715. [DOI: 10.1016/j.gyobfe.2016.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/10/2016] [Indexed: 12/14/2022]
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19
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Swierkowski-Blanchard N, Alter L, Salama S, Muratorio C, Bergere M, Jaoul M, Vialard F, Bailly M, Selva J, Boitrelle F. To be or not to be [fertile], that is the question. Basic Clin Androl 2016; 26:12. [PMID: 27777778 PMCID: PMC5059960 DOI: 10.1186/s12610-016-0040-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/25/2016] [Indexed: 11/24/2022] Open
Abstract
Background According to our literature analysis, there are no data focused on spermatozoa emotional representations in childless men and data on the emotional repercussions of a diagnosis of infertility on men are still scarce. Thus, in this work, we investigated what the presence or absence of spermatozoa in the semen symbolize for men. Material and methods To answer this question, 441 childless heterosexual men participated in an anonymous, prospective, Internet-based survey. Results In response to the question “What would having a high or normal sperm count symbolize for you?” the most frequent answer was “ability to father a child”. Men living with a partner were significantly more likely than single men to answer “ability to father a child” (p < 0.05) and less likely to answer “virility” and/or “ability to have an erection/ejaculation” (p = 0.001). In response to the question “If you found out that you had a low sperm count or no spermatozoa at all, how would you feel?”, most of the men stated that they would be disappointed. Men living with a partner were more likely to state that they would feel ashamed (p < 0.05) or guilty with regard to their partner (p < 0.0001). Conclusions These preliminary results should help us to improve (i) the way that male infertility is announced (it is easier to find the right words if one understands the possible importance of having a high sperm count) and (ii) the psychological, marital and sexual counselling provided to men with a diagnosis of infertility.
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Affiliation(s)
- N Swierkowski-Blanchard
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - L Alter
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - S Salama
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - C Muratorio
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - M Bergere
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - M Jaoul
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - F Vialard
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - M Bailly
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - J Selva
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
| | - F Boitrelle
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France ; EA7404-GIG, UFR des Sciences de la Santé Simone Veil, Université Paris-Saclay, Montigny le Bretonneux, France
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Killick-Kendrick R, Wilkes TJ, Alexander J, Bray RS, Rioux JA, Bailly M. The distance of attraction of CDC light traps to Phlebotomine sandflies. ACTA ACUST UNITED AC 2016. [DOI: 10.1051/parasite/1985606763] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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21
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Kechagia JZ, Ezra DG, Burton MJ, Bailly M. Fibroblasts profiling in scarring trachoma identifies IL-6 as a functional component of a fibroblast-macrophage pro-fibrotic and pro-inflammatory feedback loop. Sci Rep 2016; 6:28261. [PMID: 27321784 PMCID: PMC4913315 DOI: 10.1038/srep28261] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/02/2016] [Indexed: 12/24/2022] Open
Abstract
Trachoma is a conjunctiva scarring disease, which is the leading infectious cause of blindness worldwide. Yet, the molecular mechanisms underlying progressive fibrosis in trachoma are unknown. To investigate the contribution of local resident fibroblasts to disease progression, we isolated conjunctival fibroblasts from patients with scarring trachoma and matching control individuals, and compared their gene expression profiles and functional properties in vitro. We show that scarring trachoma fibroblasts substantially differ from control counterparts, displaying pro-fibrotic and pro-inflammatory features matched by an altered gene expression profile. This pro-inflammatory signature was exemplified by increased IL-6 expression and secretion, and a stronger response to macrophage-mediated stimulation of contraction. We further demonstrate that scarring trachoma fibroblasts can promote Akt phosphorylation in macrophages in an IL-6 –dependent manner. Overall this work has uncovered a distinctive molecular fingerprint for scarring trachoma fibroblasts, and identified IL-6- as a potential contributor to the chronic conjunctival fibrosis, mediating reciprocal pro-fibrotic/pro-inflammatory interactions between macrophages and fibroblasts.
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Affiliation(s)
- Jenny Z Kechagia
- Department of Cell Biology, UCL Institute of Ophthalmology, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Daniel G Ezra
- Department of Cell Biology, UCL Institute of Ophthalmology, 11-43 Bath Street, London, EC1V 9EL, UK.,Moorfields Eye Hospital, and UCL Partners AHSC, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Matthew J Burton
- Moorfields Eye Hospital, and UCL Partners AHSC, 11-43 Bath Street, London, EC1V 9EL, UK.,International Centre for Eye Health, London School of Hygiene &Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Maryse Bailly
- Department of Cell Biology, UCL Institute of Ophthalmology, 11-43 Bath Street, London, EC1V 9EL, UK
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22
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Burgoyne T, Meschede IP, Burden JJ, Bailly M, Seabra MC, Futter CE. Rod disc renewal occurs by evagination of the ciliary plasma membrane that makes cadherin-based contacts with the inner segment. Proc Natl Acad Sci U S A 2015; 112:15922-7. [PMID: 26668363 PMCID: PMC4702997 DOI: 10.1073/pnas.1509285113] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The outer segments of vertebrate rod photoreceptors are renewed every 10 d. Outer segment components are transported from the site of synthesis in the inner segment through the connecting cilium, followed by assembly of the highly ordered discs. Two models of assembly of discrete discs involving either successive fusion events between intracellular rhodopsin-bearing vesicles or the evagination of the plasma membrane followed by fusion of adjacent evaginations have been proposed. Here we use immuno-electron microscopy and electron tomography to show that rhodopsin is transported from the inner to the outer segment via the ciliary plasma membrane, subsequently forming successive evaginations that "zipper" up proximally, but at their leading edges are free to make junctions containing the protocadherin, PCDH21, with the inner segment plasma membrane. Given the physical dimensions of the evaginations, coupled with likely instability of the membrane cortex at the distal end of the connecting cilium, we propose that the evagination occurs via a process akin to blebbing and is not driven by actin polymerization. Disassembly of these junctions is accompanied by fusion of the leading edges of successive evaginations to form discrete discs. This fusion is topologically different to that mediated by the membrane fusion proteins, SNAREs, as initial fusion is between exoplasmic leaflets, and is accompanied by gain of the tetraspanin rim protein, peripherin.
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Affiliation(s)
- Thomas Burgoyne
- Institute of Ophthalmology, University College London, London, EC1V9EL, United Kingdom
| | - Ingrid P Meschede
- Institute of Ophthalmology, University College London, London, EC1V9EL, United Kingdom
| | - Jemima J Burden
- Laboratory for Molecular and Cell Biology, University College London, London, WC1E6BT, United Kingdom
| | - Maryse Bailly
- Institute of Ophthalmology, University College London, London, EC1V9EL, United Kingdom
| | - Miguel C Seabra
- National Heart and Lung Institute, Imperial College, London, SW72AZ, United Kingdom; Centro de Estudos de Doenças Crónicas, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - Clare E Futter
- Institute of Ophthalmology, University College London, London, EC1V9EL, United Kingdom;
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23
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Kozdon K, Fitchett C, Rose GE, Ezra DG, Bailly M. Mesenchymal Stem Cell-Like Properties of Orbital Fibroblasts in Graves' Orbitopathy. Invest Ophthalmol Vis Sci 2015; 56:5743-50. [PMID: 26325413 DOI: 10.1167/iovs.15-16580] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Graves' orbitopathy (GO) is a sight-threatening autoimmune disorder causing extraocular muscle fibrosis, upper lid retraction and eye bulging due to orbital fat expansion. These clinical features are mediated by aspects of orbital fibroblasts differentiation, including adipogenesis and fibrosis. Our previous work suggested that this dual phenotype might be a manifestation of mixed cell populations, partially linked to the expression of mesenchymal stem cell (MSC) marker CD90. Thus, we set out to determine whether GO orbital fibroblasts displayed MSC properties. METHODS Control and GO orbital fibroblasts previously characterized for CD90 and CD45 expression were analyzed by flow cytometry for classical MSC positive (CD73, CD105) and negative (CD14, CD19, HLA-DR, and CD34) markers. Graves' orbitopathy fibroblasts were tested further for their ability to undergo lineage specific differentiation following standard protocols. RESULTS Control and GO fibroblasts strongly expressed CD73 and CD105, with a higher percentage of positive cells and stronger expression levels in GO. Neither cell type expresses CD14, CD19, and HLA-DR. Protein CD34 was expressed at low levels by 45% to 70% of the cells, with its expression significantly lower in GO cells. Graves' orbitopathy fibroblasts displayed features of osteogenesis (calcium deposits, and osteocalcin [BGLAP] and osteonectin [SPARC] expression), chondrogenesis (glycosaminoglycan production; SOX9 and aggrecan [ACAN] expression), myogenesis (α-smooth muscle actin expression), and neurogenesis (β-III tubulin expression) upon differentiation. CONCLUSIONS Our findings suggest that orbital fibroblasts contain a population of cells that fulfil the criteria defining MSC. This subpopulation may be increased in GO, possibly underlying the complex differentiation phenotype of the disease.
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Affiliation(s)
- Katarzyna Kozdon
- Department of Cell Biology UCL Institute of Ophthalmology, London, United Kingdom
| | - Caroline Fitchett
- Department of Cell Biology UCL Institute of Ophthalmology, London, United Kingdom
| | - Geoffrey E Rose
- Orbital clinic, Moorfields Eye Hospital and the National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
| | - Daniel G Ezra
- Department of Cell Biology UCL Institute of Ophthalmology, London, United Kingdom 2Orbital clinic, Moorfields Eye Hospital and the National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and
| | - Maryse Bailly
- Department of Cell Biology UCL Institute of Ophthalmology, London, United Kingdom
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Camus F, Bailly M, Munier O, Métrard G, Gauvain S, Wachter T. Apport de la TEP-scanographie dans le diagnostic différentiel entre radionécrose et récidive tumorale après radiothérapie stéréotaxique cérébrale : à propos d’un cas. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.077] [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: 11/26/2022]
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25
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Yu-Wai-Man C, Treisman R, Khaw P, Bailly M. Downregulating the Myocardin-related transcription factor/ Serum response factor (MRTF/SRF) pathway is a novel therapeutic approach to prevent post-surgical fibrosis in glaucoma. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. Yu-Wai-Man
- NIHR BRC at Moorfields Eye Hospital and UCL Institute of Ophthalmology, Cell Biology & Ocular Biology and Therapeutics; London United Kingdom
| | - R. Treisman
- Francis Crick Institute; Transcription Lab; London United Kingdom
| | - P.T. Khaw
- NIHR BRC at Moorfields Eye Hospital and UCL Institute of Ophthalmology, Cell Biology & Ocular Biology and Therapeutics; London United Kingdom
| | - M. Bailly
- NIHR BRC at Moorfields Eye Hospital and UCL Institute of Ophthalmology, Cell Biology & Ocular Biology and Therapeutics; London United Kingdom
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Abstract
Tissue contraction and fibrosis are major causes of morbidity in the human body. In the eye in particular, fibrosis and scarring are responsible for the pathogenesis or failure of treatment of all major blinding diseases, with postoperative wound healing responses posing a major problem for most ocular surgery on a worldwide scale. This is one of the largest areas of unmet need in ophthalmology, with currently no antifibrotic treatments available clinically. This review focuses on the ubiquitous myocardin-related transcription factor/serum response factor (MRTF-A/SRF) transcription pathway as a potential novel therapeutic target in fibrotic eye diseases. It describes how the MRTF-A/SRF pathway is intricately linked to all the key regulators and pathways in ocular fibrosis, and how it could potentially lead to a new avenue of antifibrotic therapies in the future.
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Affiliation(s)
- Cynthia Yu-Wai-Man
- Department of Ocular Biology and Therapeutics, NIHR Biomedical Research Centre at Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, United Kingdom
| | - Richard Treisman
- Transcription Laboratory, Cancer Research UK London Research Institute, London, United Kingdom
| | - Maryse Bailly
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
| | - Peng Tee Khaw
- Department of Ocular Biology and Therapeutics, NIHR Biomedical Research Centre at Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, United Kingdom
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Li H, Fitchett C, Kozdon K, Jayaram H, Rose GE, Bailly M, Ezra DG. Independent adipogenic and contractile properties of fibroblasts in Graves' orbitopathy: an in vitro model for the evaluation of treatments. PLoS One 2014; 9:e95586. [PMID: 24751986 PMCID: PMC3994071 DOI: 10.1371/journal.pone.0095586] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 03/28/2014] [Indexed: 11/19/2022] Open
Abstract
Graves’ orbitopathy (GO) is a disfiguring and sometimes blinding disease, characterised by inflammation and swelling of orbital tissues, with fibrosis and adipogenesis being predominant features. Little is known about the disease aetiology and the molecular mechanisms driving the phenotypic changes in orbital fibroblasts are unknown. Using fibroblasts isolated from the orbital fat of undiseased individuals or GO patients, we have established a novel in vitro model to evaluate the dual profile of GO cells in a three-dimensional collagen matrix; this pseudo-physiological 3D environment allows measurement of their contractile and adipogenic properties. GO cells contracted collagen matrices more efficiently than control cells following serum or TGFβ1 stimulation, and showed a slightly increased ability to proliferate in the 3D matrix, in accordance with a fibro-proliferative phenotype. GO cells, unlike controls, also spontaneously differentiated into adipocytes in 3D cultures - confirming an intrinsic adipogenic profile. However, both control and GO cells underwent adipogenesis when cultured under pathological pressure levels. We further demonstrate that a Thy-1-low population of GO cells underlies the adipogenic - but not the contractile - phenotype and, using inhibitors, confirm that the contractile and adipogenic phenotypes are regulated by separate pathways. In view of the current lack of suitable treatment for GO, we propose that this new model testing the duality of the GO phenotype could be useful as a preclinical evaluation for the efficacy of potential treatments.
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Affiliation(s)
- He Li
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
| | - Caroline Fitchett
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
| | - Katarzyna Kozdon
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
| | - Hari Jayaram
- Department of Ocular Biology and Therapeutics, UCL Institute of Ophthalmology, London, United Kingdom
| | - Geoffrey E. Rose
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, and the National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, UCL Partners AHSC, London, United Kingdom
| | - Maryse Bailly
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
- * E-mail:
| | - Daniel G. Ezra
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, and the National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, UCL Partners AHSC, London, United Kingdom
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28
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Bailly M, Zinsius A, Maia S, Santiago Ribeiro MJ. [Radiation exposure of surgical staff during sentinel node surgery. Is there a risk for the surgeon and his team?]. ACTA ACUST UNITED AC 2014; 42:296-300. [PMID: 24533993 DOI: 10.1016/j.gyobfe.2014.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 11/22/2013] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Assess the radiation exposure of surgical staff during sentinel node surgery in gynecology using a radiotracer, the (99m)Tc-microalbumin. MATERIALS AND METHODS A monocentric, prospective study was conducted during 3 months representing 40 sentinel node surgical procedures with different dosimetric measurements. Dosimeters were used to evaluate the whole body and the fingers radiation exposure for all exposed workers (surgeon, nurse and surgical assistant). Another dosimeter was used to estimate the atmospheric radiation level. The activity of (99m)Tc-microalbumin was 50.1±2.4MBq when the surgery was performed the same day and 90.4±3.2MBq when the surgery was performed the day after. RESULTS Radioactive doses received during each procedure by the surgeon, surgical assistant and nurse are 5, 3.75 and 0μSv for whole body exposure and 17.5, 15.6 and 16.2μSv for extremities respectively. Atmosphere dosimeter does not detect any radiation over this period. On average, 200 procedures are performed each year in our hospital by 7 surgeons. Surgeon's radiation exposure remains below the threshold of 1mSv annual for whole body and 50mSv annual for fingers set for public by the International Commission on Radiological Protection. DISCUSSION AND CONCLUSIONS During sentinel node surgery radiation exposure of surgical staff is weak. Everyone, including the surgeon, receives a dose below the limits of the public radiation exposure. There is no need for special dosimetric monitoring or use radiation protective devices during the sentinel node surgery using (99m)Tc-microalbumin injection.
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Affiliation(s)
- M Bailly
- Service de médecine nucléaire, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France.
| | - A Zinsius
- Service de médecine nucléaire, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France; Service compétent en radioprotection, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France
| | - S Maia
- Service compétent en radioprotection, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France
| | - M-J Santiago Ribeiro
- Service de médecine nucléaire, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France
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Boitrelle F, Guthauser B, Alter L, Bailly M, Bergere M, Wainer R, Vialard F, Albert M, Selva J. High-magnification selection of spermatozoa prior to oocyte injection: confirmed and potential indications. Reprod Biomed Online 2013; 28:6-13. [PMID: 24268730 DOI: 10.1016/j.rbmo.2013.09.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 09/04/2013] [Accepted: 09/05/2013] [Indexed: 11/17/2022]
Abstract
Intracytoplasmic morphologically selected sperm injection (IMSI) involves the use of differential interference contrast microscopy at high magnification (at least ·6300) to improve the observation of live human spermatozoa (particularly by showing sperm head vacuoles that are not necessarily seen at lower magnifications) prior to intracytoplasmic sperm injection (ICSI) into the oocyte. However, a decade after IMSI’s introduction, the technique’s indications and ability to increase pregnancy and/or birth rates (relative to conventional ICSI) are subject to debate. In an attempt to clarify this debate, this work performed a systematic literature review according to the PRISMA guidelines. The PubMed database was searched from 2001 onwards with the terms ‘IMSI’, ‘MSOME’ and ‘high-magnification, sperm’. Out of 168 search results, 22 relevant studies reporting IMSI outcomes in terms of blastocyst, pregnancy, delivery and/or birth rates were selected and reviewed. The studies’ methodologies and results are described and discussed herein. In view of the scarcity of head-to-head IMSI versus ICSI studies, the only confirmed indication for IMSI is recurrent implantation failure following ICSI. All other potential indications of IMSI require further investigation.
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Affiliation(s)
- F Boitrelle
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France.
| | - B Guthauser
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - L Alter
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - M Bailly
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - M Bergere
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - R Wainer
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - F Vialard
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - M Albert
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
| | - J Selva
- Department of Reproductive Biology, Cytogenetics and Gynaecology, Poissy General Hospital, F-78303 Poissy, France; EA 2493, Versailles University of Medicine and Science, F-78000 Versailles, France
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Ferfouri F, Boitrelle F, Ghout I, Albert M, Molina Gomes D, Wainer R, Bailly M, Selva J, Vialard F. A genome-wide DNA methylation study in azoospermia. Andrology 2013; 1:815-21. [DOI: 10.1111/j.2047-2927.2013.00117.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 06/27/2013] [Accepted: 06/28/2013] [Indexed: 01/15/2023]
Affiliation(s)
- F. Ferfouri
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - F. Boitrelle
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - I. Ghout
- Clinical Research Department; Ambroise Paré Hospital; Boulogne France
| | - M. Albert
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - D. Molina Gomes
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - R. Wainer
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - M. Bailly
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - J. Selva
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
| | - F. Vialard
- Department of Reproductive Biology, Cytogenetics, Gynecology and Obstetrics; Poissy Saint Germain Medical Center; Poissy France
- EA 2493; University of Versailles Saint-Quentin; Versailles France
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Li H, Ezra DG, Burton MJ, Bailly M. Doxycycline prevents matrix remodeling and contraction by trichiasis-derived conjunctival fibroblasts. Invest Ophthalmol Vis Sci 2013; 54:4675-82. [PMID: 23766479 DOI: 10.1167/iovs.13-11787] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
PURPOSE Trachoma is a conjunctival scarring disease, which is the leading infectious cause of blindness worldwide. Elimination of blinding trachoma is being held back by the high rate of trichiasis recurrence following surgery. There is currently no treatment available to suppress the profibrotic state and reduce recurrence. Although the mechanisms underlying trichiasis development are unknown, the profibrotic phenotype has been linked to matrix metalloproteinase (MMP) expression. Doxycycline, a well-known tetracycline antibiotic, can act as a broad MMP inhibitor and has showed some success in preventing fibrosis in various clinical contexts. The purpose of this work was to assess the antiscarring properties of doxycycline in an in vitro model of trichiasis fibroblast-mediated tissue contraction. METHODS Primary cultures of fibroblasts were established from conjunctival samples obtained from normal donors or during surgery for trachomatous trichiasis. The effect of doxycycline on matrix contraction was investigated in our standard collagen gel contraction model. Cell morphology and matrix integrity were assessed using confocal reflection microscopy. Quantitative real time polymerase chain reaction and a FRET-based assay were used to measure MMP expression and activity, respectively. RESULTS Doxycycline treatment successfully suppressed the contractile phenotype of trichiasis fibroblasts, matrix degradation, and significantly altered the expression of MMP1, MMP9, and MMP12 associated with the profibrotic phenotype. CONCLUSIONS In view of the results presented here and the wider use of doxycycline in clinical settings, we propose that doxycycline might be useful as a treatment to prevent recurrence following trichiasis surgery.
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Affiliation(s)
- He Li
- Department of Cell Biology, UCL Institute of Ophthalmology, London, United Kingdom
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Terry SJ, Elbediwy A, Zihni C, Harris AR, Bailly M, Charras GT, Balda MS, Matter K. Stimulation of cortical myosin phosphorylation by p114RhoGEF drives cell migration and tumor cell invasion. PLoS One 2012; 7:e50188. [PMID: 23185572 PMCID: PMC3501466 DOI: 10.1371/journal.pone.0050188] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Accepted: 10/19/2012] [Indexed: 12/31/2022] Open
Abstract
Actinomyosin activity is an important driver of cell locomotion and has been shown to promote collective cell migration of epithelial sheets as well as single cell migration and tumor cell invasion. However, the molecular mechanisms underlying activation of cortical myosin to stimulate single cell movement, and the relationship between the mechanisms that drive single cell locomotion and those that mediate collective cell migration of epithelial sheets are incompletely understood. Here, we demonstrate that p114RhoGEF, an activator of RhoA that associates with non-muscle myosin IIA, regulates collective cell migration of epithelial sheets and tumor cell invasion. Depletion of p114RhoGEF resulted in specific spatial inhibition of myosin activation at cell-cell contacts in migrating epithelial sheets and the cortex of migrating single cells, but only affected double and not single phosphorylation of myosin light chain. In agreement, overall elasticity and contractility of the cells, processes that rely on persistent and more constant forces, were not affected, suggesting that p114RhoGEF mediates process-specific myosin activation. Locomotion was p114RhoGEF-dependent on Matrigel, which favors more roundish cells and amoeboid-like actinomyosin-driven movement, but not on fibronectin, which stimulates flatter cells and lamellipodia-driven, mesenchymal-like migration. Accordingly, depletion of p114RhoGEF led to reduced RhoA, but increased Rac activity. Invasion of 3D matrices was p114RhoGEF-dependent under conditions that do not require metalloproteinase activity, supporting a role of p114RhoGEF in myosin-dependent, amoeboid-like locomotion. Our data demonstrate that p114RhoGEF drives cortical myosin activation by stimulating myosin light chain double phosphorylation and, thereby, collective cell migration of epithelial sheets and amoeboid-like motility of tumor cells.
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Affiliation(s)
- Stephen J. Terry
- Department of Cell Biology, UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Ahmed Elbediwy
- Department of Cell Biology, UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Ceniz Zihni
- Department of Cell Biology, UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Andrew R. Harris
- London Centre for Nanotechnology, University College London, London, United Kingdom
- Department of Physics and Doctorate Program of Engineering of the Department of Chemistry, University College London, London, United Kingdom
| | - Maryse Bailly
- Department of Cell Biology, UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Guillaume T. Charras
- London Centre for Nanotechnology, University College London, London, United Kingdom
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Maria S. Balda
- Department of Cell Biology, UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Karl Matter
- Department of Cell Biology, UCL Institute of Ophthalmology, University College London, London, United Kingdom
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Salama S, Boitrelle F, Albert M, Hammoud I, Huchon C, Wainer R, Selva J, Bailly M. Intérêt de la ponction épididymaire et de la biopsie testiculaire systématique dans la prise en charge de l’azoospermie obstructive. Basic Clin Androl 2012. [DOI: 10.1007/s12610-012-0202-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Résumé
Introduction
Dans l’azoospermie obstructive (AO), les taux d’extraction chirurgicale de spermatozoïdes sont élevés. Cependant, en ce qui concerne les issues des ICSI (Intra cytoplasmic Sperm Injection) chirurgicales, les données de la littérature divergent. Quels sont, dans notre équipe, les taux d’extraction de spermatozoïdes après aspiration épidydimaire (MESA) et après extraction testiculaire (TESE) dans l’AO ? Les taux de grossesses, les taux de fausses couches spontanées et d’accouchements diffèrent-ils en fonction de l’origine du sperme ?
Matériels et méthodes
L’étude a rétrospectivement inclus 48 couples dont l’homme présente une azoospermie obstructive pure et ayant bénéficié d’un prélèvement chirurgical de spermatozoïdes associant systématiquement MESA et TESE. Les ICSI ont été réalisées de manière asynchrone. À chaque fois que cela était possible, la première ICSI a été réalisée avec des spermatozoïdes épididymaires.
Résultats
Pour les 48 couples, 99 ICSI ont été réalisées. Quinze couples ont réalisé 24 ICSI-TESE car l’aspiration épididymaire était négative. Onze couples ont réalisé 20 ICSI-TESE car la qualité du prélèvement épididymaire n’était pas satisfaisante (vitalité spermatique réduite le plus souvent). Vingt-deux couples ont réalisé 22 ICSI-MESA en première intention puis en cas d’échec, 11 couples ont réalisé 12 ICSI-MESA et dix couples ont réalisé 20 ICSI-TESE. Alors que les nombres d’ovocytes injectés (7,1±4,1 vs 6,9 ±3,6 P: 0,8) et d’embryons obtenus (4,5±3,0 vs 4,7±2,7; P: 0,7) ne sont pas significativement différents dans les deux groupes d’ICSI, les nombres d’embryons de top qualité (2,4±1,9 vs 3,6±2,0 P: 0,005) et d’embryons congelés (0,9±1,8 vs 1,7±1,9 P: 0,04) sont significativement supérieurs dans le groupe TESE. Le nombre de grossesse par ponction est supérieur dans le groupe TESE (58,5 % vs 26,5 %, P: 0,002).
Conclusion
L’approche de notre centre a la particularité d’associer systématiquement un prélèvement testiculaire au prélèvement épididymaire chez tout homme présentant une azoospermie obstructive alors que la plupart des autres études rapportées se limitent à l’exploration épididymaire si cette dernière est positive lors de l’examen extemporané. Alors que classiquement, on rapporte 100% de positivité lors du prélèvement épididymaire chez l’homme atteint d’une azoospermie obstructive, dans notre étude, plus de la moitié des explorations épididymaires s’est avérée inexploitable. La qualité embryonnaire et les taux de grossesses sont meilleurs avec des spermatozoïdes testiculaires. L’association de ces 2 sites de prélèvement (MESA et TESE) peut être complémentaire et utile pour le couple et l’issue de sa prise en charge en AMP sans pour autant entraîner un sur-risque pour l’homme dans les suites de la chirurgie.
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Anandagoda N, Ezra DG, Cheema U, Bailly M, Brown RA. Hyaluronan hydration generates three-dimensional meso-scale structure in engineered collagen tissues. J R Soc Interface 2012; 9:2680-7. [PMID: 22593098 PMCID: PMC3427506 DOI: 10.1098/rsif.2012.0164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 03/27/2012] [Indexed: 11/12/2022] Open
Abstract
Here, we show that the local incorporation of osmotically active hyaluronan into previously compressed collagen constructs results in further rapid dehydration/compression of collagen layers, channel formation and generation of new interfaces; these novel structures, at the nano-micro (i.e. meso-scale) were formed within native collagen gels, in a highly predictable spatial manner and offer important new methods of fabricating scaffolds (e.g. tubes and open-spirals) with potential for use in tissue regeneration such as in peripheral nerves and small vessels. This paper tests the possibility that the local fluid content of a dense collagen network can be controlled by incorporation of an osmotically active (native) macromolecule--hyluronan. This is an exemplar physiological, osmotic swelling agent. Hyaluronan is commonly secreted by cells deep in connective tissues, so is a good candidate for this role in a cell-driven system balancing mechanical compaction of bulk tissue collagen. These constructs may have potential as functional in vitro models representing developmental and pathological processes.
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Affiliation(s)
- Nelomi Anandagoda
- UCL Institute of Orthopaedics and Musculoskeletal Science, UCL Tissue Repair and Engineering Centre, University College London, Stanmore Campus, London HA7 4LP, UK
| | - Daniel G. Ezra
- Moorfields Eye Hospital and UCL Institute of Ophthalmology NIHR Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital, City Road, London EC1V 2PD, UK
- The Orbital Clinic, Adnexal Department, Moorfields Eye Hospital NHS Foundation Trust, City Road, London EC1V 2PD, UK
- Department of Cell Biology, UCL Institute of Ophthalmology, Bath Street, London EC1V 9EL, UK
| | - Umber Cheema
- UCL Institute of Orthopaedics and Musculoskeletal Science, UCL Tissue Repair and Engineering Centre, University College London, Stanmore Campus, London HA7 4LP, UK
| | - Maryse Bailly
- Department of Cell Biology, UCL Institute of Ophthalmology, Bath Street, London EC1V 9EL, UK
| | - Robert A. Brown
- UCL Institute of Orthopaedics and Musculoskeletal Science, UCL Tissue Repair and Engineering Centre, University College London, Stanmore Campus, London HA7 4LP, UK
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Chaintreuil D, Jolivot A, Rognant N, Guèbre Egziabher F, Bailly M, Fouque D, Juillard L. Épuration des chaînes légères par membrane PMMA et récupération rénale dans le myélome multiple. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.254] [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: 11/25/2022]
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Tovell VE, Chau CY, Khaw PT, Bailly M. Rac1 inhibition prevents tissue contraction and MMP mediated matrix remodeling in the conjunctiva. Invest Ophthalmol Vis Sci 2012; 53:4682-91. [PMID: 22695959 DOI: 10.1167/iovs.11-8577] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To evaluate the efficiency of Rac1 inhibition in preventing matrix contraction by Tenon's capsule fibroblasts. METHODS The involvement of Rac1 in serum-stimulated matrix contraction by human Tenon's fibroblasts (HTFs) was investigated in a classic collagen contraction model and our ex vivo model of tissue contraction using immunocytochemistry, chemical inhibitors, and small interfering RNA (siRNA) technology. Matrix integrity was assessed using confocal reflection microscopy and Coomassie blue staining. Quantitative real-time polymerase chain reaction (QRT-PCR) and Western blot analysis were used to assess matrix metalloproteinase (MMP) expression. RESULTS Serum induced Rac1 activation in HTF-populated collagen gels and stimulated HTFs to contract collagen matrices down to ~90% of their original size. Rac1 inhibition using NSC23766 or depletion using siRNA both significantly reduced HTF-mediated contraction. Early brief exposure to NSC23766 reduced HTF-mediated gel contraction by 70%, while transient treatment with the Rac1 inhibitor once a week decreased ex vivo tissue contraction down to serum-free levels. Transient exposure to NSC23766 prevented early cell protrusions, fiber alignment, and matrix degradation, as seen upon continuous exposure to broad-spectrum MMP inhibitor. However, unlike MMP inhibition, transient treatment with NSC23766 led to a significant reduction in MMP1 mRNA and protein expression during contraction, without increasing MMP2 and MMP14 expression. CONCLUSIONS Rac1 inhibition efficiently prevents conjunctival tissue and collagen matrix contraction and prevents matrix degradation.
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Affiliation(s)
- Victoria E Tovell
- Department of Cell Biology, the Moorfields Eye Hospital/UCL Institute of Ophthalmology, London, United Kingdom.
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Ezra DG, Krell J, Rose GE, Bailly M, Stebbing J, Castellano L. Transcriptome-level microarray expression profiling implicates IGF-1 and Wnt signalling dysregulation in the pathogenesis of thyroid-associated orbitopathy. J Clin Pathol 2012; 65:608-13. [PMID: 22554965 PMCID: PMC7611799 DOI: 10.1136/jclinpath-2012-200719] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
AIMS The pathogenesis of thyroid-associated orbitopathy (TAO) remains unclear. The aim of this study is to elucidate the gene expression profile of orbital fat from patients with active, but untreated, TAO. METHODS A case-control gene expression study was conducted using test samples of orbital fat from TAO patients and control orbital fat specimens; apart from drugs to control thyrotoxicosis, the TAO patients had received no treatment for orbital disease. cDNA expression analysis was performed using the Affymetrix GeneChip Human Genome U133 Plus 2.0 platform and validated using quantitative PCR. RESULTS The highest-ranked differentially expressed genes were dominated by IGF-1 signalling genes. These include IGF-1, IGF-1 receptor binding/signalling genes, such as SOCS3 and IRS2, and downstream signalling and transcriptional regulators, such as SGK (PDK/Akt signalling) and c-JUN. Our microarray data also demonstrate dysregulation of wingless-type MMTV (Wnt) signalling gene expression, including Wnt5a, sFRPs and DKK. CONCLUSION Altered Wnt signalling confirms previous array findings. Further investigation of the role of Wnt signalling in TAO pathogenesis is warranted. These data also provide the first evidence of dysregulation of IGF-1 pathway genes in TAO tissue, further strengthening the evidence for the role of IGF-1 signalling in the pathogenesis and potential treatment of TAO.
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Affiliation(s)
- Daniel G Ezra
- NIHR Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital, London, UK.
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39
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Hammoud I, Boitrelle F, Ferfouri F, Vialard F, Bergere M, Wainer B, Bailly M, Albert M, Selva J. Selection of normal spermatozoa with a vacuole-free head (x6300) improves selection of spermatozoa with intact DNA in patients with high sperm DNA fragmentation rates. Andrologia 2012; 45:163-70. [DOI: 10.1111/j.1439-0272.2012.01328.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2012] [Indexed: 01/10/2023] Open
Affiliation(s)
| | | | | | | | | | - B. Wainer
- Department of Reproductive Biology, Cytogenetics and Gynecology; Hospital of Poissy; Poissy; France
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Boitrelle F, Robin G, Lefebvre C, Bailly M, Selva J, Courcol R, Lornage J, Albert M. Les bactériospermies en AMP : comment réaliser et interpréter une spermoculture ? Qui traiter ? Pourquoi ? Comment ? ACTA ACUST UNITED AC 2012; 40:226-34. [DOI: 10.1016/j.gyobfe.2012.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 12/12/2011] [Indexed: 11/26/2022]
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41
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Karasu Y, Dilbaz B, Demir B, Dilbaz S, Secilmis Kerimoglu O, Ercan CM, Keskin U, Korkmaz C, Duru NK, Ergun A, de Zuniga I, Horton M, Oubina A, Scotti L, Abramovich D, Pascuali N, Tesone M, Parborell F, Bouzas N, Yang XH, Chen SL, Chen X, Ye DS, Zheng HY, Nyboe Andersen A, Lauritsen MP, Thuesen LL, Khodadadi M, Shivabasavaiah S, Mozafari R, Ansari Z, Hamdine O, Broekmans F, Eijkemans MJC, Cohlen BJ, Verhoeff A, van Dop PA, Bernardus RE, Lambalk CB, Oosterhuis GJE, Holleboom C, van den Dool-Maasland GC, Verburg HJ, van der Heijden PFM, Blankhart A, Fauser BCJM, Laven JSE, Macklon NS, Agudo D, Lopez C, Alonso M, Huguet E, Bronet F, Garcia-Velasco JA, Requena A, Gonzalez Comadran M, Checa MA, Duran M, Fabregues F, Carreras R, Ersahin A, Kahraman S, Kavrut M, Gorgen B, Acet M, Dokuzeylul N, Aybar F, Lim SY, Park JC, Bae JG, Kim JI, Rhee JH, Mahran A, Abdelmeged A, El-Adawy A, Eissa M, Darne J, Shaw RW, Amer SA, Dai A, Yan G, He Q, Hu Y, Sun H, Ferrero H, Gomez R, Garcia-Pascual CM, Simon C, Gaytan F, Pellicer A, Garcia Pascual CM, Zimmermann RC, Ferrero H, Simon C, Pellicer A, Gomez R, Madani T, Mohammadi Yeganeh L, Khodabakhshi SH, Akhoond MR, Hasani F, Monzo C, Haouzi D, Assou S, Dechaud H, Hamamah S, Amer S, Mahran M, Eissa M, Darne J, Shaw R, Lan V, Nhu G, Tuong H, Mahmoud Youssef MA, Aboulfoutouh I, Al-inany H, Van Der Veen F, Van Wely M, Zhang Q, Fang T, Wu S, Zhang L, Wang B, Li X, Yan G, Sun H, Hu Y, He Q, Ding L, Day A, Wang B, Yan G, Hu Y, Sun H, Zhang L, Fang T, Zhang Q, Wu S, Yan G, Sun H, Hu Y, Fulford B, Boivin J, Alanbay I, Ercan CM, Sakinci M, Coksuer H, Ozturk M, Tapan S, Chung CK, Chung Y, Seo S, Aksoy S, Yakin K, Caliskan S, Salar Z, Ata B, Urman B, Devroey P, Pellicer A, Nyboe Andersen A, Arce JC, Harrison K, Irving J, Osborn J, Harrison M, Fusi F, Arnoldi M, Cappato M, Galbignani E, Galimberti A, Zanga L, Frigerio L, Taghavi SA, Ashrafi M, Karimian L, Mehdizadeh M, Joghataie M, Aflatoonian R, Xu B, Cui YG, Gao LL, Diao FY, Li M, Liu XQ, Liu JY, Jiang F, Li M, Cui YG, Diao FY, Liu JY, Jee BC, Yi G, Kim JY, Suh CS, Kim SH, Liu S, Cui YG, Liu JY, Cai LB, Liu JJ, Ma X, Geenen E, Bots RSGM, Smeenk JMJ, Chang E, Lee W, Seok H, Kim Y, Han J, Yoon T, Lazaros L, Xita N, Zikopoulos K, Makrydimas G, Kaponis A, Sofikitis N, Stefos T, Hatzi E, Georgiou I, Atilgan R, Kumbak B, Sahin L, Ozkan ZS, Simsek M, Sapmaz E, Karacan M, Alwaeely FA, Cebi Z, Berberoglugil M, Ulug M, Camlibel T, Kavrut M, Kahraman S, Ersahin A, Acet M, Yelke H, Kamalak Z, Carlioglu A, Akdeniz D, Uysal S, Inegol Gumus I, Ozturk Turhan N, Regan S, Yovich J, Stanger J, Almahbobi G, Kara M, Aydin T, Turktekin N, Youssef M, Aboulfoutouh I, Al-Inany H, van der Veen F, van Wely M, Hart R, Doherty D, Frederiksen H, Keelan J, Pennell C, Newnham J, Skakkebaek N, Main K, Salem HT, Ismail AA, Viola M, Siebert TI, Steyn DW, Kruger TF, Robin G, Dewailly D, Thomas P, Leroy M, Lefebvre C, soudan B, Pigny P, Decanter C, ElPrince M, Wang F, Zhu Y, Huang H, Valdez Morales F, Vital Reyes V, Mendoza Rodriguez A, Gamboa Dominguez A, Cerbon M, Aizpurua J, Ramos B, Luehr B, Moragues I, Rogel S, Cil AP, Guler ZB, Kisa U, Albu A, Radian S, Grigorescu F, Albu D, Fica S, Al Boghdady L, Ghanem ME, Hassan M, Helal AS, Ozdogan S, Ozdegirmenci O, Dilbaz S, Demir B, Cinar O, Dilbaz B, Goktolga U, Seeber B, Tsybulyak I, Bottcher B, Grubinger T, Czech T, Wildt L, Wojcik J, Howles CM, Destenaves B, Arriagada P, Tavmergen E, Sahin G, Akdogan A, Levi R, Goker ENT, Thuesen LL, Loft A, Smitz J, Nyboe Andersen A, Ricciardi L, Di Florio C, Busacca M, Gagliano D, Immediata V, Selvaggi L, Romualdi D, Guido M, Bouhanna P, Salama S, Kamoud Z, Torre A, Paillusson B, Fuchs F, Bailly M, Wainer R, Tagliaferri V, Busacca M, Gagliano D, Di Florio C, Tartaglia C, Cirella E, Romualdi D, Guido M, Aflatoonian A, Eftekhar M, Mohammadian F, Yousefnejad F, De Cicco S, Gagliano D, Busacca M, Di Florio C, Immediata V, Campagna G, Romualdi D, Guido M, Depalo R, Lippolis C, Vacca M, Nardelli C, Selvaggi L, Cavallini A, Panic T, Mitulovic G, Franz M, Sator K, Tschugguel W, Pietrowski D, Hildebrandt T, Cupisti S, Giltay EJ, Gooren LJ, Oppelt PG, Hackl J, Reissmann C, Schulze C, Heusinger K, Attig M, Hoffmann I, Beckmann MW, Dittrich R, Mueller A, Sharma S, Singh S, Chakravarty A, Sarkar A, Rajani S, Chakravarty BN, Dilbaz S, Ozturk E, Ozdegirmenci O, Demir B, Isikoglu S, Kul S, Dilbaz B, Cinar O, Goktolga U, Eftekhar M, Aflatoonian A, Mohammadian F, Broekmans F, Hillensjo T, Witjes H, Elbers J, Mannaerts B, Gordon K, Krasnopolskaya K, Galaktionova A, Gorskaya O, Kabanova D, Venturella R, Morelli M, Mocciaro R, Capasso S, Cappiello F, Zullo F, Monterde M, Gomez R, Marzal A, Vega O, Rubio-Rubio JM, Diaz-Garcia C, Pellicer A, Gordon K, Kolibianakis E, Griesinger G, Yding Andersen C, Witjes H, Mannaerts B, Ocal P, Guralp O, Aydogan B, Irez T, Cetin M, Senol H, Erol N, Yding Andersen C, Kolibianakis E, Devroey P, Witjes H, Mannaerts B, Gordon K, Griesinger G, Rombauts L, Van Kuijk J, Mannaerts B, Montagut J, Nogueira D, Porcu G, Chomier M, Giorgetti C, Nicollet B, Degoy J, Lehert P, Alviggi C, De Rosa P, Vallone R, Picarelli S, Coppola M, Conforti A, Strina I, Di Carlo C, De Placido G, Hackl J, Cupisti S, Haeberle L, Schulze C, Hildebrandt T, Oppelt PG, Reissmann C, Heusinger K, Attig M, Hoffmann I, Dittrich R, Beckmann MW, Mueller A, Akdogan A, Demirtas O, Sahin G, Tavmergen E, Goker ENT, Fatemi H, Shapiro BS, Griesinger G, Witjes H, Gordon K, Mannaerts BM, Chimote MN, Mehta BN, Chimote NN, Nath NM, Chimote NM, Karia S, Bonifacio M, Bowman M, McArthur S, Jung J, Cho S, Choi Y, Lee B, Seo S, Lee KH, Kim CH, Kwon SK, Kim SH, Kang BM, Jung KS, Basios G, Trakakis E, Hatziagelaki E, Vaggopoulos V, Tsiavou A, Panagopoulos P, Chrelias C, Kassanos D, Sarhan A, Elsamanoudy A, Harira M, Dogan S, Bozdag G, Esinler I, Polat M, Yarali H. REPRODUCTIVE ENDOCRINOLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.88] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hu JCY, Seo BK, Neri QV, Rozenwaks Z, Palermo GD, Fields T, Neri QV, Monahan D, Rosenwaks Z, Palermo GD, Szkodziak P, Plewka K, Wozniak S, Czuczwar P, Mroczkowski A, Lorenzo Leon C, Hernandez J, Chinea Mendez E, Concepcion Lorenzo C, Sanabria Perez V, Puopolo M, Palumbo A, Toth B, Franz C, Montag M, Boing A, Strowitzki T, Nieuwland R, Griesinger G, Schultze-Mosgau A, Cordes T, Depenbusch M, Diedrich K, Vloeberghs V, Verheyen G, Camus M, Van de Velde H, Goossens A, Tournaye H, Coppola G, Di Caprio G, Wilding M, Ferraro P, Esposito G, Di Matteo L, Dale R, Coppola G, Dale B, Daoud S, Auger J, Wolf JP, Dulioust E, Lafuente R, Lopez G, Brassesco M, Hamad M, Montenarh M, Hammadeh M, Robles F, Magli MC, Crippa A, Pescatori E, Ferraretti AP, Gianaroli L, Zahiri M, Movahedin M, Mowla SJ, Noruzinia M, Crippa A, Ferraretti AP, Magli MC, Crivello AM, Robles F, Gianaroli L, Sermondade N, Dupont C, Hafhouf E, Cedrin-Durnerin I, Poncelet C, Benzacken B, Levy R, Sifer C, Ferfouri F, Boitrelle F, Clement P, Molina Gomes D, Bailly M, Selva J, Vialard F, Yaprak E, Basar M, Guzel E, Arda O, Irez T, Norambuena P, Krenkova P, Tuettelmann F, Kliesch S, Paulasova P, Stambergova A, Macek M, Macek M, Rivera R, Garrido-Gomez T, Galletero S, Meseguer M, Dominguez F, Garrido N, Mallidis C, Sanchez V, Weigeng L, Redmann K, Wistuba J, Gross P, Wuebbelling F, Fallnich C, Burger M, Kliesch S, Schlatt S, San Celestino Carchenilla M, Pacheco Castro A, Simon Sanjurjo P, Molinero Ballesteros A, Rubio Garcia S, Garcia Velasco JA, Macanovic B, Otasevic V, Korac A, Vucetic M, Garalejic E, Ivanovic Burmazovic I, Filipovic MR, Buzadzic B, Stancic A, Jankovic A, Velickovic K, Golic I, Markelic M, Korac B, Gosalvez J, Ruiz-Jorro M, Garcia-Ochoa C, Sachez-Martin P, Martinez-Moya M, Caballero P, Hasegawa N, Fukunaga N, Nagai R, Kitasaka H, Yoshimura T, Tamura F, Kato M, Nakayama K, Oono H, Kojima E, Yasue K, Watanabe H, Asano E, Hashiba Y, Asada Y, Das M, Al-Hathal N, San-Gabriel M, Phillips S, Kadoch IJ, Bissonnette F, Holzer H, Zini A, Zebitay AG, Irez T, Ocal P, Sahmay S, Karahuseyinoglu S, Usta T, Repping S, Silber S, Van Wely M, Datta A, Nayini K, Eapen A, Barlow S, Lockwood G, Tavares R, Baptista M, Publicover SJ, Ramalho-Santos J, Vaamonde D, Rodriguez I, Diaz A, Darr C, Chow V, Ma S, Smith R, Jeria F, Rivera J, Gabler F, Nicolai H, Cunha M, Viana P, Goncalves A, Silva J, Oliveira C, Teixeira da Silva J, Ferraz L, Madureira C, Doria S, Sousa M, Barros A, Herrero MB, Delbes G, Troueng E, Holzer H, Chan PTK, Vingris L, Setti AS, Braga DPAF, Figueira RCS, Iaconelli A, Borges E, Sargin Oruc A, Gulerman C, Zeyrek T, Yilmaz N, Tuzcuoglu D, Cicek N, Scarselli F, Terribile M, Franco G, Zavaglia D, Dente D, Zazzaro V, Riccio T, Minasi MG, Greco E, Cejudo-Roman A, Ravina CG, Candenas L, Gallardo-Castro M, Martin-Lozano D, Fernandez-Sanchez M, Pinto FM, Balasuriya A, Serhal P, Doshi A, Harper J, Romany L, Garrido N, Fernandez JL, Pellicer A, Meseguer M, Ribas-Maynou J, Garcia-Peiro A, Fernandez-Encinas A, Prada E, Jorda I, Cortes P, Llagostera M, Navarro J, Benet J, Kesici H, Cayli S, Erdemir F, Karaca Z, Aslan H, Karaca Z, Cayli S, Ocakli S, Kesici H, Erdemir F, Aslan H, Tas U, Ozdemir AA, Aktas RG, Tok OE, Ocakli S, Cayli S, Karaca Z, Erdemir F, Aslan H, Li S, Lu C, Hwu Y, Lee RK, Landaburu I, Gonzalvo MC, Clavero A, Ramirez JP, Pedrinaci S, Serrano M, Montero L, Carrillo S, Weiss J, Ortiz AP, Castilla JA, Sahin O, Bakircioglu E, Serdarogullari M, Bayram A, Yayla S, Ulug U, Tosun SB, Bahceci M, Aktas RG, Ozdemir AA, Tok OE, Yoon SY, Shin DH, Shin TE, Park EA, Won HJ, Kim YS, Lee WS, Yoon TK, Lee DR, Hattori H, Nakajo Y, Kyoya T, Kuchiki M, Kanto S, Kyono K, Park M, Park MR, Lim EJ, Lee WS, Yoon TK, Lee DR, Choi Y, Mitra A, Bhattacharya J, Kundu A, Mukhopadhaya D, Pal M, Enciso M, Alfarawati S, Wells D, Fernandez-Encinas A, Garcia-Peiro A, Ribas-Maynou J, Abad C, Amengual MJ, Navarro J, Benet J, Esmaeili V, Safiri M, Shahverdi AH, Alizadeh AR, Ebrahimi B, Brucculeri AM, Ruvolo G, Giovannelli L, Schillaci R, Cittadini E, Scaravelli G, Perino A, Cortes Gallego S, Gabriel Segovia A, Nunez Calonge R, Guijarro Ponce A, Ortega Lopez L, Caballero Peregrin P, Heindryckx B, Kashir J, Jones C, Mounce G, Ramadan WM, Lemmon B, De Sutter P, Parrington J, Turner K, Child T, McVeigh E, Coward K, Bakircioglu E, Ulug U, Tosun S, Serdarogullari M, Bayram A, Ciray N, Bahceci M, Saeidi S, Shapouri F, Hoseinifar H, Sabbaghian M, Pacey A, Aflatoonian R, Bosco L, Ruvolo G, Carrillo L, Pane A, Manno M, Roccheri MC, Cittadini E, Selles E, Garcia-Herrero S, Martinez JA, Munoz M, Meseguer M, Garrido N, Durmaz A, Dikmen N, Gunduz C, Tavmergen Goker E, Tavmergen E, Gozuacik D, Vatansever HS, Kara B, Calimlioglu N, Yasar P, Tavmergen E, Tavmergen Goker E, Semerci B, Baka M, Ozbilgin K, Karabulut A, Tekin A, Sabah B, Cottin V, Kottelat D, Fellmann M, Halm S, Rosenthaler E, Kisida T, Kojima F, Sakamoto T, Makutina VA, Balezin SL, Rosly OF, Slishkina TV, Hatzi E, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Zikopoulos K, Georgiou I, Zikopoulos K, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Hatzi E, Georgiou I, Georgiou I, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Hatzi E, Zikopoulos K, Hibi H, Ohori T, Sumitomo M, Asada Y, Anarte C, Calvo I, Domingo A, Presilla N, Aleman M, Bou R, Guardiola F, Agirregoikoa JA, De Pablo JL, Barrenetxea G, Zhylkova I, Feskov O, Feskova I, Zozulina O, Somova O, Nabi A, Khalili MA, Roudbari F, Parmegiani L, Cognigni GE, Bernardi S, Taraborrelli S, Troilo E, Ciampaglia W, Pocognoli P, Infante FE, Tabarelli de fatis C, Arnone A, Maccarini AM, Filicori M, Silva L, Oliveira JBA, Petersen CG, Mauri AL, Massaro FC, Cavagna M, Baruffi RLR, Franco JG, Fujii Y, Endou Y, Mtoyama H, Shokri S, Aitken RJ. ANDROLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.73] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nola S, Daigaku R, Smolarczyk K, Carstens M, Martin-Martin B, Longmore G, Bailly M, Braga VMM. Ajuba is required for Rac activation and maintenance of E-cadherin adhesion. ACTA ACUST UNITED AC 2011; 195:855-71. [PMID: 22105346 PMCID: PMC3257575 DOI: 10.1083/jcb.201107162] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A Rac–PAK1–Ajuba feedback loop stabilizes cadherin complexes via coordination of spatiotemporal signaling with actin remodeling at cell–cell contacts. Maintenance of stable E-cadherin–dependent adhesion is essential for epithelial function. The small GTPase Rac is activated by initial cadherin clustering, but the precise mechanisms underlying Rac-dependent junction stabilization are not well understood. Ajuba, a LIM domain protein, colocalizes with cadherins, yet Ajuba function at junctions is unknown. We show that, in Ajuba-depleted cells, Rac activation and actin accumulation at cadherin receptors was impaired, and junctions did not sustain mechanical stress. The Rac effector PAK1 was also transiently activated upon cell–cell adhesion and directly phosphorylated Ajuba (Thr172). Interestingly, similar to Ajuba depletion, blocking PAK1 activation perturbed junction maintenance and actin recruitment. Expression of phosphomimetic Ajuba rescued the effects of PAK1 inhibition. Ajuba bound directly to Rac·GDP or Rac·GTP, but phosphorylated Ajuba interacted preferentially with active Rac. Rather than facilitating Rac recruitment to junctions, Ajuba modulated Rac dynamics at contacts depending on its phosphorylation status. Thus, a Rac–PAK1–Ajuba feedback loop integrates spatiotemporal signaling with actin remodeling at cell–cell contacts and stabilizes preassembled cadherin complexes.
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Affiliation(s)
- Sébastien Nola
- Molecular Medicine, National Heart and Lung Institute, Imperial College London, London SW7 2AZ, England, UK
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Hammoud I, Albert M, Bailly M, Boitrelle F, Vialard F, Selva J. Is testicular sperm more efficient than epididymal sperm for ICSI in patients with obstructive azoospermia? Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.196] [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: 10/17/2022]
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Abstract
OBJECTIVES To develop and validate a novel ex vivo model of conjunctival contraction. METHODS Ex vivo segments of conjunctiva were maintained in culture for 4 weeks in permeable support plates. Digital images were obtained twice a week to monitor contraction using tissue area changes and weekly weight measurements. Investigated were the effects of known contraction stimulators (fetal bovine serum and transforming growth factor β(2)) and of the matrix metalloproteinase inhibitor GM6001. Microscopic contraction, tissue organization, and cell viability (using the cell vital dye carboxyfluorescein diacetate) were monitored by confocal reflection and 2-photon microscopy, revealing detailed real-time kinetics of tissue remodeling. RESULTS Fetal bovine serum and transforming growth factor β(2) induced significant tissue contraction in conjunctiva segments, with no changes in cell viability. This correlated with dramatic and specific degradation of the collagen component in the tissue. Contraction and collagen degradation were reduced in the presence of GM6001. CONCLUSIONS Ex vivo segments of conjunctiva can be used as an integral model system to provide a higher level of understanding about the efficacy of antiscarring therapies and can help bridge the current gap between in vitro and in vivo models. CLINICAL RELEVANCE Scarring leads to the failure of several ocular surgical procedures. This novel ex vivo model recapitulates tissue contraction (with kinetics close to that of in vivo scarring) and allows for a more physiological analysis of conjunctival scarring, which could better evaluate potential therapeutic targets.
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Affiliation(s)
- Victoria E Tovell
- University College London Institute of Ophthalmology, 11-43 Bath St, London EC1V9EL, England.
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Boitrelle F, Ferfouri F, Petit JM, Segretain D, Tourain C, Bergere M, Bailly M, Vialard F, Albert M, Selva J. Large human sperm vacuoles observed in motile spermatozoa under high magnification: nuclear thumbprints linked to failure of chromatin condensation. Hum Reprod 2011; 26:1650-8. [DOI: 10.1093/humrep/der129] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Salama S, Torre A, Paillusson B, Thomin A, Ben Brahim F, Muratorio C, Bailly M, Wainer R. [Ovarian stimulation monitoring: past, present and perspectives]. Gynecol Obstet Fertil 2011; 39:245-254. [PMID: 21439884 DOI: 10.1016/j.gyobfe.2011.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Accepted: 12/13/2010] [Indexed: 05/30/2023]
Abstract
Since the inception of Assisted Reproductive Technology (ART), knowing the moment of ovulation has always been a priority. Initially, the monitoring was accomplished by observing the luteinizing hormone (LH) surge just before ovulation. Currently, in all ART facilities, the monitoring of all stimulated ovulatory cycles is done by using the conventional two-dimensional (2D) ultrasound to measure follicle diameter and by drawing blood tests that measure estradiol, progesterone, and luteinizing hormone levels. These exams allow determination of the numbers and quality of growing ovarian follicles and evaluation of follicle maturity before choosing the appropriate time for ovulation triggering. The monitoring of ovulatory cycles has now become enhanced with the arrival of new software called SonoAVC. This software allows the utilization of 3D blocks to immediately calculate the total number and volume of the follicles inside the ovary. This automatic approach is faster, precise, and more efficient. It also has better reproducibility than the classical 2D diameters. Furthermore, certain ART professionals envision that by using the SonoVac technology, patients will no longer need to be monitored with regular ultrasounds and with systematic hormonal testing.
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Affiliation(s)
- S Salama
- Service de gynécologie-obstétrique et médecine de la reproduction, hôpital de Poissy-Saint-Germain-en-Laye, Poissy cedex, France.
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Ezra DG, Ellis JS, Gaughan C, Beaconsfield M, Collin R, Bunce C, Bailly M, Luthert P. Changes in tarsal plate fibrillar collagens and elastic fibre phenotype in floppy eyelid syndrome. Clin Exp Ophthalmol 2011; 39:564-71. [DOI: 10.1111/j.1442-9071.2011.02506.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Rives N, Secco M, Bailly M, Mitchell V, Papaxanthos A, Sibert L, Albert M, Rigot JM, Marcelli F, Clavier B, Selva J, Decanter CH, Mace B, Bahadur G, Jegede T, Santis M, Markakis S, Ahuja KK, Ishikawa T, Kokeguchi S, Shiotani M, Fujisawa M, Yoshida A, Hammoud AO, Meikle A, Peterson CM, Stanford J, Gibson M, Carrell DT, Filippini G, Pozzi L, De Angelis F, Dini M, Palumbo A, Zeeb M, Suter T, jemec M, Pecorari R, Lopez G, Lafuente R, Checa MA, Carreras R, Brassesco M. SELECTED ORAL COMMUNICATION SESSION, SESSION 04: ANDROLOGY - MALE FACTOR, Monday 4 July 2011 10:00 - 11:30. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.4] [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: 11/15/2022] Open
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