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Leonardi L, Adam C, Beaudonnet G, Beauvais D, Cauquil C, Not A, Morassi O, Benmalek A, Trassard O, Echaniz-Laguna A, Adams D, Labeyrie C. Skin amyloid deposits and nerve fiber loss as markers of neuropathy onset and progression in hereditary transthyretin amyloidosis. Eur J Neurol 2022; 29:1477-1487. [PMID: 35100482 DOI: 10.1111/ene.15268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/27/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess skin biopsy as marker of disease onset and severity in hereditary transthyretin amyloidosis with polyneuropathy (ATTRv-PN), a treatable disease. METHODS In this single center retrospective study, skin Congo red staining and intraepidermal nerve fiber density (IENFD) were evaluated in symptomatic ATTRv-PN patients and asymptomatic TTR gene mutation carriers between 2012 and 2019. Non-ATTRv subjects with small fiber neuropathy suspicion who underwent skin biopsy in the same timespan were used as controls. RESULTS One-hundred-eighty-three symptomatic ATTRv-PN, 36 asymptomatic carriers, and 537 non-ATTRv patients were included. Skin biopsy demonstrated amyloid depositions in 80% of the 183 symptomatic cases. Skin amyloid deposits were found in 75% of early-stage ATTRv-PN patients, and in 14% of asymptomatic carriers. All 183 symptomatic and 34/36 asymptomatic patients displayed decreased ankle IENFD with a proximal-distal gradient distribution, and reduced IEFND correlated with disease severity and duration. CONCLUSIONS Our study demonstrates skin amyloid deposits are a marker of ATTRv-PN disease onset, and decreased IENFD a marker of disease progression. These results are of major importance for the early identification of ATTRv-PN patients in need of disease-modifying treatments.
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Affiliation(s)
- Luca Leonardi
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France.,Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, Sant'Andrea Hospital, Rome, Italy
| | - Clovis Adam
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France.,University Paris-Saclay, INSERM U 1195, 94270, Le Kremlin Bicêtre, France.,Pathology Department, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Guillemette Beaudonnet
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France.,Neurophysiology and Epileptology Department, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Diane Beauvais
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Cécile Cauquil
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Adeline Not
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Olivier Morassi
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Anouar Benmalek
- School of Pharmacy, University Paris-Saclay, Châtenay-Malabry, France
| | - Olivier Trassard
- Pathology Department, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
| | - Andoni Echaniz-Laguna
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France.,University Paris-Saclay, INSERM U 1195, 94270, Le Kremlin Bicêtre, France
| | - David Adams
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France.,University Paris-Saclay, INSERM U 1195, 94270, Le Kremlin Bicêtre, France
| | - Céline Labeyrie
- Referral Center for Familial Amyloid Polyneuropathy and other rare peripheral neuropathies (NNERF), Department of Neurology, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France.,University Paris-Saclay, INSERM U 1195, 94270, Le Kremlin Bicêtre, France.,Pathology Department, Bicêtre University Hospital, AP-HP, 94270, Le Kremlin Bicêtre, France
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Delaune A, Valmary-Degano S, Loménie N, Zryouil K, Benyahia N, Trassard O, Eraville V, Bergeron C, Devouassoux-Shisheboran M, Glaser C, Bataillon G, Bacry E, Combes S, Prevot S, Bertheau P. Le premier data challenge organisé par la Société Française de Pathologie : une compétition internationale en 2020, un outil de recherche en intelligence artificielle pour l’avenir ? Ann Pathol 2022; 42:119-128. [DOI: 10.1016/j.annpat.2021.10.002] [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] [Received: 05/20/2021] [Revised: 09/08/2021] [Accepted: 10/09/2021] [Indexed: 10/19/2022]
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Laurent-Bellue A, Poullier E, Pomerol JF, Adnet E, Redon MJ, Posseme K, Trassard O, Cherqui D, Zarca K, Guettier C. Four-Year Experience of Digital Slide Telepathology for Intraoperative Frozen Section Consultations in a Two-Site French Academic Department of Pathology. Am J Clin Pathol 2020; 154:414-423. [PMID: 32459303 DOI: 10.1093/ajcp/aqaa055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES To share our experience with digital slide telepathology for intraoperative frozen section consultations (IOCs) and to describe its evolution over time by reporting performance metrics and addressing organizational and economic aspects. METHODS Since 2013, a technician has been alone at the surgical site. At the other site, the pathologist opens the digital slide from a local server via the intranet. Three periods were compared: a 6-month period of conventional IOC (period 1), a 24-month period of telepathology at 6 months after implementation (period 2), and a 12-month period of telepathology at 3.5 years after implementation (period 3). RESULTS In total, 87 conventional IOCs and 464 and 313 IOCs on digital slides were performed respectively during periods 1, 2, and 3; mean turnaround time was 27, 36, and 38 minutes, respectively, and there were a mean number of 1.1, 1.1, and 1.3 slides, respectively, per IOC. Diagnostic accuracy was achieved in 95.4%, 92.7%, and 93.9%, respectively, of IOCs (not significant). The additional cost is in the same range as the cost of urgent transport by courier. CONCLUSIONS Developing IOC with digital slides is a challenge but is necessary to optimize medical time in the current context of pathologist shortage and budget restrictions.
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Affiliation(s)
- Astrid Laurent-Bellue
- Department of Pathology, AP-HP-Université Paris Saclay, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
| | - Eric Poullier
- Information System Department, AP-HP, Campus Picpus, Paris, France
| | | | - Eric Adnet
- Information System Department, AP-HP-Université Paris Saclay, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - Marie-José Redon
- Department of Pathology, AP-HP-Université Paris Saclay, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - Katia Posseme
- Department of Pathology, AP-HP-Université Paris Saclay, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - Olivier Trassard
- Department of Pathology, AP-HP-Université Paris Saclay, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - Daniel Cherqui
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Department of Surgery, Centre Hépato-Biliaire, AP-HP-Université Paris Saclay, Hôpital Paul Brousse, Villejuif, France
| | - Kevin Zarca
- URC eco Ile-de-France, AP-HP-Université Paris V, Paris, France
| | - Catherine Guettier
- Department of Pathology, AP-HP-Université Paris Saclay, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
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Gaillard M, Tranchart H, Lainas P, Trassard O, Remy S, Dubart-Kupperschmitt A, Dagher I. Improving Hepatocyte Engraftment Following Hepatocyte Transplantation Using Repeated Reversible Portal Vein Embolization in Rats. Liver Transpl 2019; 25:98-110. [PMID: 30358068 DOI: 10.1002/lt.25364] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 10/10/2018] [Indexed: 02/07/2023]
Abstract
Hepatocyte transplantation (HT) has emerged as a promising alternative to orthotopic liver transplantation, yet liver preconditioning is needed to promote hepatocyte engraftment. A method of temporary occlusion of the portal flow called reversible portal vein embolization (RPVE) has been demonstrated to be an efficient method of liver preconditioning. By providing an additional regenerative stimulus, repeated reversible portal vein embolization (RRPVE) could further boost liver engraftment. The aim of this study was to determine the efficiency of liver engraftment of transplanted hepatocytes after RPVE and RRPVE in a rat model. Green fluorescent protein-expressing hepatocytes were isolated from transgenic rats and transplanted into 3 groups of syngeneic recipient rats. HT was associated with RPVE in group 1, with RRPVE in group 2, and with sham embolization in the sham group. Liver engraftment was assessed at day 28 after HT on liver samples after immunostaining. Procedures were well tolerated in all groups. RRPVE resulted in increased engraftment rate in total liver parenchyma compared with RPVE (3.4% ± 0.81% versus 1.4% ± 0.34%; P < 0.001). In conclusion, RRPVE successfully enhanced hepatocyte engraftment after HT and could be helpful in the frame of failure of HT due to low cell engraftment.
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Affiliation(s)
- Martin Gaillard
- INSERM U1193, Hôpital Paul-Brousse, Villejuif, France.,Département Hospitalo-Universitaire Hepatinov, Hôpital Paul-Brousse, Villejuif, France.,Faculté de Médecine Paris-Sud, Université Paris-Saclay, Orsay, France.,Department of Minimally Invasive Surgery, Antoine Beclere Hospital, AP-HP, Clamart, France
| | - Hadrien Tranchart
- INSERM U1193, Hôpital Paul-Brousse, Villejuif, France.,Département Hospitalo-Universitaire Hepatinov, Hôpital Paul-Brousse, Villejuif, France.,Faculté de Médecine Paris-Sud, Université Paris-Saclay, Orsay, France.,Department of Minimally Invasive Surgery, Antoine Beclere Hospital, AP-HP, Clamart, France
| | - Panagiotis Lainas
- INSERM U1193, Hôpital Paul-Brousse, Villejuif, France.,Département Hospitalo-Universitaire Hepatinov, Hôpital Paul-Brousse, Villejuif, France.,Faculté de Médecine Paris-Sud, Université Paris-Saclay, Orsay, France.,Department of Minimally Invasive Surgery, Antoine Beclere Hospital, AP-HP, Clamart, France
| | - Olivier Trassard
- Institut Biomédical Bicêtre UMS32, Hôpital Bicetre, Kremlin-Bicetre, France
| | | | - Anne Dubart-Kupperschmitt
- INSERM U1193, Hôpital Paul-Brousse, Villejuif, France.,Département Hospitalo-Universitaire Hepatinov, Hôpital Paul-Brousse, Villejuif, France.,Faculté de Médecine Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Ibrahim Dagher
- INSERM U1193, Hôpital Paul-Brousse, Villejuif, France.,Département Hospitalo-Universitaire Hepatinov, Hôpital Paul-Brousse, Villejuif, France.,Faculté de Médecine Paris-Sud, Université Paris-Saclay, Orsay, France.,Department of Minimally Invasive Surgery, Antoine Beclere Hospital, AP-HP, Clamart, France
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Xu C, Giuliano F, Yaici ED, Conrath M, Trassard O, Benoit G, Vergé D. Identification of lumbar spinal neurons controlling simultaneously the prostate and the bulbospongiosus muscles in the rat. Neuroscience 2006; 138:561-73. [PMID: 16364554 DOI: 10.1016/j.neuroscience.2005.11.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Revised: 10/13/2005] [Accepted: 11/03/2005] [Indexed: 10/25/2022]
Abstract
Lumbar spinothalamic neurons in the lamina X of the L3-L4 spinal cord segment have been proposed to constitute the spinal ejaculation generator in male rats. Lumbar spinothalamic cells are immunoreactive for galanin and neurokinin-1 receptors. We previously showed that after injection of pseudorabies virus either in the bulbospongiosus muscle or in the prostate, retrogradely labeled cells in the L3-L4 segment also displayed galanin or neurokinin-1 receptor immunoreactivities, demonstrating a direct link between lumbar spinothalamic cells and two anatomical structures involved in the two phases of ejaculation i.e. the emission and the expulsion phases. In order to provide with a more precise anatomical support for the role of lumbar spinothalamic cells in controlling ejaculation, we injected simultaneously in male adult rats two strains of recombinant pseudorabies virus, expressing either beta-galactosidase (PRV-BaBlu) or green fluorescent protein (PRV-152) in the prostate and in the bulbospongiosus muscle, respectively. After 5 days, we performed multiple immunofluorescence experiments to detect PRV-BaBlu, PRV-152 and galanin or neurokinin-1 receptors in transverse sections of the L1-S1 segment. Double- and triple-labeled cells were counted using confocal laser scanning microscope. Double-labeled neurons with the two strains of pseudorabies virus were mainly found at the L3-L4 segment lateral to the central canal in lamina X and represented about 60% of the total number of pseudorabies virus-labeled neurons. All the double pseudorabies virus-labeled neurons also expressed lumbar spinothalamic and most of them neurokinin-1 receptor, identifying them as lumbar spinothalamic neurons. The convergence of retrograde labeling from prostate and bulbospongiosus muscle on the same lumbar spinothalamic cells strongly reinforce their role in the spinal control and coordination of the emission and expulsion of sperm.
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Affiliation(s)
- C Xu
- Groupe de Recherche en Urologie, UPRESS EA 1602, Faculté de Médecine Paris-Sud, 63 rue Gabriel Péri, 94270 Le Kremlin-Bicêtre, France
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Legendre P, Salsmann A, Rayes J, Trassard O, Kieffer N, Baruch D. CHO cells expressing the high affinity alpha(IIb)beta3 T562N integrin demonstrate enhanced adhesion under shear. J Thromb Haemost 2006; 4:236-46. [PMID: 16409474 DOI: 10.1111/j.1538-7836.2005.01653.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Alpha(IIb)beta3-mediated platelet adhesive interactions in the vasculature, which are dependent on the functional state of this receptor, may be sensitive to shear forces. OBJECTIVES To evaluate the influence of the alpha(IIb)beta3 affinity state on cell attachment under flow, we compared Chinese hamster ovary cells expressing the low affinity alpha(IIb)beta3 wild-type (wt) receptor to those expressing the high affinity alpha(IIb)beta3 T562N receptor. MATERIALS AND METHODS We designed a real-time videomicroscopy adhesion assay for von Willebrand factor (VWF) or fibrinogen under flow conditions. RESULTS At 50 s(-1), alpha(IIb)beta3 T562N supported higher cell adhesion to fibrinogen (63.3 +/- 2.9 cells/field) than alpha(IIb)beta3 wt (38.7 +/- 2.4 cells/field, P < 0.0001). At 100 s(-1), alpha(IIb)beta3 T562N mediated cell adhesion (40.5 +/- 3.8 cells/field), while alpha(IIb)beta3 wt did not (5.3 +/- 1.4 cells/field, P < 0.001), allowing to discriminate the efficiency of each receptor. Similar findings were observed for adhesion to VWF. Complete inhibition of cell adhesion to fibrinogen was achieved with 800 microM fibrinogen gamma-chain dodecapeptide [HHLGGAKQAGDV (H12)], while Arg-Gly-Asp-Ser (RGDS) peptide (10-1000 microM) induced a dose-dependent cell detachment. These results suggest that the H12 motif allows initial attachment, in contrast to the RGDS site, which strengthens the stability of adhesion. Interestingly, compared with wt, a 10-fold lower concentration of RGDS was required to reach a similar reduction of cell adhesion mediated by alpha(IIb)beta3 T562N. CONCLUSIONS Our data show that alpha(IIb)beta3 activation is associated with a stabilization of integrin binding to fibrinogen or VWF under shear.
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