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Villeneuve P, Saez F, Hug E, Chorfa A, Guiton R, Schubert B, Force A, Drevet JR. Spermatozoa isolation with Felix™ outperforms conventional density gradient centrifugation preparation in selecting cells with low DNA damage. Andrology 2023; 11:1593-1604. [PMID: 36629014 DOI: 10.1111/andr.13384] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/02/2023] [Accepted: 01/10/2023] [Indexed: 01/12/2023]
Abstract
BACKGROUND The optimization of spermatozoa preparation techniques in order to obtain cell fractions enriched with structurally and functionally "superior" spermatozoa is a key objective of the assisted reproduction industry. OBJECTIVES The purpose of this study was to evaluate a recent development of an electrophoretic spermatozoa separation device (Felix™, Memphasys Ltd, Sydney, Australia) and to compare its performance with conventional spermatozoa preparation by density gradient centrifugation (DGC). Particular attention was paid to the evaluation of sperm DNA/nuclear integrity. MATERIALS & METHODS A cohort of 29 human semen samples was studied. Semen samples were analyzed fresh and after DGC or Felix™ preparation. Semen parameters monitored included sample volume, sperm count, total motility, progressive motility, sperm DNA fragmentation using the Sperm Chromatin Structure Assay and sperm DNA oxidation. RESULTS Spermatozoa preparation with Felix™ resulted in significantly improved spermatozoa fractions with higher progressive motility, lower sperm DNA fragmentation, and lower sperm DNA oxidation compared with raw semen and DGC-prepared spermatozoa. DISCUSSION & CONCLUSION The data collected in this study support the preparation of spermatozoa by the Felix™ system as it allows selection of spermatozoa with the highest progressive motility as well as the lowest nuclear/DNA damage. These improved sperm parameters, along with the fact that the Felix™ separation process is very fast and highly standardized, should be of great interest to the assisted reproduction technologies industry.
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Affiliation(s)
- Pauline Villeneuve
- GReD Institute, Université Clermont Auvergne-Inserm U1103-CNRS UMR6293, Faculté de Médecine, CRBC, Clermont-Ferrand, France
| | - Fabrice Saez
- GReD Institute, Université Clermont Auvergne-Inserm U1103-CNRS UMR6293, Faculté de Médecine, CRBC, Clermont-Ferrand, France
| | - Elisa Hug
- GReD Institute, Université Clermont Auvergne-Inserm U1103-CNRS UMR6293, Faculté de Médecine, CRBC, Clermont-Ferrand, France
| | - Areski Chorfa
- GReD Institute, Université Clermont Auvergne-Inserm U1103-CNRS UMR6293, Faculté de Médecine, CRBC, Clermont-Ferrand, France
| | - Rachel Guiton
- GReD Institute, Université Clermont Auvergne-Inserm U1103-CNRS UMR6293, Faculté de Médecine, CRBC, Clermont-Ferrand, France
| | - Benoit Schubert
- Eurofins Biomnis-Institut Rhônalpin, Médicentre de la clinique du Val d'Ouest, Ecully, France
| | - André Force
- Eurofins Biomnis-Institut Rhônalpin, Médicentre de la clinique du Val d'Ouest, Ecully, France
| | - Joël R Drevet
- GReD Institute, Université Clermont Auvergne-Inserm U1103-CNRS UMR6293, Faculté de Médecine, CRBC, Clermont-Ferrand, France
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2
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Poissenot K, Trouillet AC, Trives E, Moussu C, Chesneau D, Meunier M, Lattard V, Chorfa A, Saez F, Drevet J, Le Danvic C, Nagnan-Le Meillour P, Chamero P, Keller M. Sexual discrimination and attraction through scents in the water vole, Arvicola terrestris. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2023:10.1007/s00359-023-01671-5. [PMID: 37690081 DOI: 10.1007/s00359-023-01671-5] [Citation(s) in RCA: 1] [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] [Received: 04/11/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
In mammals, especially rodents, social behaviours, such as parenting, territoriality or mate attraction, are largely based on olfactory communication through chemosignals. These behaviours are mediated by species-specific chemosignals, including small organic molecules and proteins that are secreted in the urine or in various fluids from exocrine glands. Chemosignal detection is mainly ensured by olfactory neurons in two specific sensory organs, the vomeronasal organ (VNO) and the main olfactory epithelium (MOE). This study aimed to characterise the olfactory communication in the fossorial ecotype of the water voles, Arvicola terrestris. We first measured the olfactory investigation of urine and lateral scent gland secretions from conspecifics. Our results showed that water voles can discriminate the sex of conspecifics based on the smell of urine, and that urinary male odour is attractive for female voles. Then, we demonstrated the ability of the VNO and MOE to detect volatile organic compounds (VOCs) found in water vole secretions using live-cell calcium imaging in dissociated cells. Finally, we evaluated the attractiveness of two mixtures of VOCs from urine or lateral scent glands in the field during a cyclical outbreak of vole populations.
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Affiliation(s)
- Kévin Poissenot
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | | | - Elliott Trives
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | - Chantal Moussu
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | - Didier Chesneau
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | - Maxime Meunier
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | | | - Areski Chorfa
- GReD, Université Clermont Auvergne, CNRS, Inserm, CRBC, Clermont-Ferrand, France
| | - Fabrice Saez
- GReD, Université Clermont Auvergne, CNRS, Inserm, CRBC, Clermont-Ferrand, France
| | - Joël Drevet
- GReD, Université Clermont Auvergne, CNRS, Inserm, CRBC, Clermont-Ferrand, France
| | | | | | - Pablo Chamero
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | - Matthieu Keller
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France.
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Damon-Soubeyrand C, Bongiovanni A, Chorfa A, Goubely C, Pirot N, Pardanaud L, Piboin-Fragner L, Vachias C, Bravard S, Guiton R, Thomas JL, Saez F, Kocer A, Tardivel M, Drevet JR, Henry-Berger J. Three-dimensional imaging of vascular development in the mouse epididymis. eLife 2023; 12:82748. [PMID: 37310207 DOI: 10.7554/elife.82748] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 05/18/2023] [Indexed: 06/14/2023] Open
Abstract
Long considered an accessory tubule of the male reproductive system, the epididymis is proving to be a key determinant of male fertility. In addition to its secretory role in ensuring functional maturation and survival of spermatozoa, the epididymis has a complex immune function. Indeed, it must manage both peripheral tolerance to sperm antigens foreign to the immune system and the protection of spermatozoa as well as the organ itself against pathogens ascending the epididymal tubule. Although our knowledge of the immunobiology of this organ is beginning to accumulate at the molecular and cellular levels, the organization of blood and lymphatic networks of this tissue, important players in the immune response, remains largely unknown. In the present report, we have taken advantage of a VEGFR3:YFP transgenic mouse model. Using high-resolution three-dimensional (3D) imaging and organ clearing coupled with multiplex immunodetections of lymphatic (LYVE1, PDPN, PROX1) and/or blood (PLVAP/Meca32) markers, we provide a simultaneous deep 3D view of the lymphatic and blood epididymal vasculature in the mature adult mouse as well as during postnatal development.
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Affiliation(s)
- Christelle Damon-Soubeyrand
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | | | - Areski Chorfa
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Chantal Goubely
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Nelly Pirot
- Réseau d'Histologie Expérimentale de Montpellier, Institut de Recherche en Cancérologie de Montpellier, Inserm U1194 - Université Montpellier - ICM, Campus Val d'Aurelle, Montpellier, France
| | | | | | - Caroline Vachias
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Stephanie Bravard
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Rachel Guiton
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Jean-Leon Thomas
- Department of Neurology, Yale University School of Medicine, New Haven, United States
- Institut du Cerveau et de la Moelle, Inserm, Université Pierre et Marie Curie, Paris, France
| | - Fabrice Saez
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Ayhan Kocer
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Meryem Tardivel
- Université Lille, CNRS, Inserm, CHU Lille, US 41 - UAR 2014-PLBS, Lille, France
| | - Joël R Drevet
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
| | - Joelle Henry-Berger
- Institut « Génétique Reproduction & Développement », UMR CNRS 6293 - Inserm U1103 - Université Clermont Auvergne, Faculté de Médecine, Clermont-Ferrand, France
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4
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Hug E, Villeneuve P, Bravard S, Chorfa A, Damon-Soubeyrand C, Somkuti SG, Moazamian A, Aitken RJ, Gharagozloo P, Drevet JR, Saez F. Loss of Nuclear/DNA Integrity in Mouse Epididymal Spermatozoa after Short-Term Exposure to Low Doses of Dibutyl Phthalate or Bisphenol AF and Its Mitigation by Oral Antioxidant Supplementation. Antioxidants (Basel) 2023; 12:antiox12051046. [PMID: 37237912 DOI: 10.3390/antiox12051046] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/26/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Routine exposure to chemicals omnipresent in the environment, particularly the so-called endocrine-disrupting chemicals (EDCs), has been associated with decreased sperm quality and increased anomalies in testis. The decline in semen quality and testicular abnormalities have been attributed to the disruption of endocrine signaling as well as oxidative stress. The present study set out to examine the effect of short-term exposure of two common EDCs widely used in the plastic industry: Dibutyl Phthalate (DBP) and Bisphenol AF (BPAF). Our research objective was to focus on the post-testicular compartment of the epididymis, where spermatozoa acquire their functional capacity and are stored. The data obtained indicated no significant effect for either chemicals on sperm viability, motility or acrosome integrity. Neither of the EDCs had a noticeable effect on the structures of the testis and epididymis. However, substantial impact on the integrity of the sperm nucleus and DNA structure was evidenced by a significant increase in nuclear decondensation and DNA base oxidation. The damage observed was postulated to arise from the pro-oxidant properties of the EDCs generating excess of reactive oxygen species (ROS) and triggering a state of oxidative stress. This hypothesis was confirmed when the observed damage was largely blocked by co-administering EDCs with an evidenced-based antioxidant formulation.
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Affiliation(s)
- Elisa Hug
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | - Pauline Villeneuve
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | - Stephanie Bravard
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | - Areski Chorfa
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | - Christelle Damon-Soubeyrand
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | | | - Aron Moazamian
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
- CellOxess LLC, Ewing, NJ 08540, USA
| | - R John Aitken
- School of Environmental and Life Sciences, Priority Research Centre for Reproductive Sciences, The University of Newcastle, Callaghan, Newcastle 2308, Australia
| | | | - Joël R Drevet
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
| | - Fabrice Saez
- GReD Institute, CNRS UMR6293-Université Clermont Auvergne, Faculté de Médecine, CRBC, 28 Place Henri Dunant, 63001 Clermont-Ferrand, France
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5
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Poissenot K, Chorfa A, Moussu C, Trouillet AC, Brachet M, Chesneau D, Chemineau P, Ramadier E, Pinot A, Benoit E, Lattard V, Dardente H, Drevet J, Saez F, Keller M. Photoperiod is involved in the regulation of seasonal breeding in male water voles (Arvicola terrestris). J Exp Biol 2021; 224:272112. [PMID: 34494651 DOI: 10.1242/jeb.242792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 08/26/2021] [Indexed: 12/27/2022]
Abstract
Mammals living at temperate latitudes typically display annual cyclicity in their reproductive activity: births are synchronized when environmental conditions are most favorable. In a majority of these species, day length is the main proximate factor used to anticipate seasonal changes and to adapt physiology. The brain integrates this photoperiodic signal through key hypothalamic structures, which regulate the reproductive axis. In this context, our study aimed to characterize regulations that occur along the hypothalamo-pituitary-gonadal (HPG) axis in male fossorial water voles (Arvicola terrestris, also known as Arvicola amphibius) throughout the year and to further probe the implication of photoperiod in these seasonal regulations. Our monthly field monitoring showed dramatic seasonal changes in the morphology and activity of reproductive organs, as well as in the androgen-dependent lateral scent glands. Moreover, our data uncovered seasonal variations at the hypothalamic level. During the breeding season, kisspeptin expression in the arcuate nucleus (ARC) decreases, while RFRP3 expression in the dorsomedial hypothalamic nucleus (DMH) increases. Our follow-up laboratory study revealed activation of the reproductive axis and confirmed a decrease in kisspeptin expression in males exposed to a long photoperiod (summer condition) compared with those maintained under a short photoperiod (winter condition) that retain all features reminiscent of sexual inhibition. Altogether, our study characterizes neuroendocrine and anatomical markers of seasonal reproductive rhythmicity in male water voles and further suggests that these seasonal changes are strongly impacted by photoperiod.
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Affiliation(s)
- Kevin Poissenot
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Areski Chorfa
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Université Clermont Auvergne, 28 place Henri Dunant, 63001, Clermont-Ferrand Cedex, France
| | - Chantal Moussu
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Anne-Charlotte Trouillet
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Morgane Brachet
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Didier Chesneau
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Philippe Chemineau
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Etienne Ramadier
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Adrien Pinot
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Etienne Benoit
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Virginie Lattard
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Hugues Dardente
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
| | - Joël Drevet
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Université Clermont Auvergne, 28 place Henri Dunant, 63001, Clermont-Ferrand Cedex, France
| | - Fabrice Saez
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Université Clermont Auvergne, 28 place Henri Dunant, 63001, Clermont-Ferrand Cedex, France
| | - Matthieu Keller
- Physiologie de la Reproduction et des Comportements, UMR INRAE, CNRS, Université de Tours, IFCE, 37380 Nouzilly, France
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6
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Chorfa A, Goubely C, Henry-Berger J, Guiton R, Drevet JR, Saez F. Identification of Arvicola terrestris scherman Sperm Antigens for Immune Contraceptive Purposes. Int J Mol Sci 2021; 22:ijms22189965. [PMID: 34576131 PMCID: PMC8465135 DOI: 10.3390/ijms22189965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/07/2021] [Accepted: 09/11/2021] [Indexed: 12/26/2022] Open
Abstract
The cyclical proliferation of the wild fossorial rodent Arvicola terrestris scherman (ATS) is critical in mid-mountain ecosystems of several European countries. Our goal is to develop an immunocontraceptive vaccine to control their fertility, as a sustainable alternative to chemical poisons currently used. Indeed, these chemicals cause the death of ATS predators and animals sharing their ecosystem, and current laws progressively limit their use, making the development of a targeted vaccination strategy an interesting and efficient alternative. In order to identify species-specific sperm antigens, male and female ATS received subcutaneous injections of whole ATS spermatozoa to elicit an immune response. The analysis of the immune sera led to the identification of 120 immunogenic proteins of sperm cells. Of these, 15 were strictly sperm-specific and located in different regions of the male gamete. Some of these antigens are proteins involved in molecular events essential to the reproductive process, such as sperm–egg interaction, acrosomal reaction, or sperm motility. This approach not only identified a panel of immunogenic proteins from ATS sperm cells, but also demonstrated that some of these proteins trigger an immune response in both male and female ATS. These spermatic antigens are good candidates for the development of a contraceptive vaccine.
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Affiliation(s)
| | | | | | | | - Joël R. Drevet
- Correspondence: (J.R.D.); (F.S.); Tel.: +33-4-73-40-74-13 (J.R.D.); +33-4-73-40-76-20 (F.S.)
| | - Fabrice Saez
- Correspondence: (J.R.D.); (F.S.); Tel.: +33-4-73-40-74-13 (J.R.D.); +33-4-73-40-76-20 (F.S.)
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Poissenot K, Moussu C, Chesneau D, Ramadier E, Abi Khalil R, Chorfa A, Chemineau P, Michelin Y, Saez F, Drevet J, Benoit E, Lattard V, Pinot A, Dardente H, Keller M. Field study reveals morphological and neuroendocrine correlates of seasonal breeding in female water voles, Arvicola terrestris. Gen Comp Endocrinol 2021; 311:113853. [PMID: 34265346 DOI: 10.1016/j.ygcen.2021.113853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 07/04/2021] [Accepted: 07/09/2021] [Indexed: 12/18/2022]
Abstract
Seasonally breeding mammals display timely physiological switches between reproductive activity and sexual rest, which ensure synchronisation of births at the most favourable time of the year. These switches correlate with seasonal changes along the hypothalamo-pituitary-gonadal axis, but they are primarily orchestrated at the hypothalamic level through environmental control of KISS1-dependent GnRH release. Our field study shows that births of fossorial water voles, Arvicola terrestris, are concentrated between March and October, which indicates the existence of an annual reproductive cycle in this species. Monthly field monitoring for over a year further reveals dramatic seasonal changes in the morphology of the ovary, uterus and lateral scent glands, which correlate with the reproductive status. Finally, we demonstrate seasonal variation in kisspeptin expression within the hypothalamic arcuate nucleus. Altogether, this study demonstrates a marked rhythm of seasonal breeding in the water vole and we speculate that this is governed by seasonal changes in photoperiod.
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Affiliation(s)
- Kévin Poissenot
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380 Nouzilly, France
| | - Chantal Moussu
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380 Nouzilly, France
| | - Didier Chesneau
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380 Nouzilly, France
| | - Etienne Ramadier
- UMR 0874 UREP, VetAgro Sup, INRAE, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Rami Abi Khalil
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Areski Chorfa
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Université Clermont Auvergne, 28 place Henri Dunant, 63001 Clermont-Ferrand Cedex, France
| | | | - Yves Michelin
- UMR Territoires, VetagroSup, INRAE, AgroParisTech, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Fabrice Saez
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Université Clermont Auvergne, 28 place Henri Dunant, 63001 Clermont-Ferrand Cedex, France
| | - Joël Drevet
- GReD Laboratory, CNRS UMR 6293 - INSERM U1103 - Université Clermont Auvergne, 28 place Henri Dunant, 63001 Clermont-Ferrand Cedex, France
| | - Etienne Benoit
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Virginie Lattard
- USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Adrien Pinot
- UMR 0874 UREP, VetAgro Sup, INRAE, Université Clermont Auvergne, Clermont-Ferrand, France; USC 1233 RS2GP, INRAE, VetAgro Sup, Université de Lyon, F-69280 Marcy l'Etoile, France
| | - Hugues Dardente
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380 Nouzilly, France
| | - Matthieu Keller
- CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380 Nouzilly, France.
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Chorfa A, Bétemps D, Morignat E, Lazizzera C, Hogeveen K, Andrieu T, Baron T. Specific pesticide-dependent increases in α-synuclein levels in human neuroblastoma (SH-SY5Y) and melanoma (SK-MEL-2) cell lines. Toxicol Sci 2013; 133:289-97. [PMID: 23535362 DOI: 10.1093/toxsci/kft076] [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] [Indexed: 01/07/2023] Open
Abstract
Epidemiological studies indicate a role of genetic and environmental factors in Parkinson's disease involving alterations of the neuronal α-synuclein (α-syn) protein. In particular, a relationship between Parkinson's disease and occupational exposure to pesticides has been repeatedly suggested. Our objective was to precisely assess changes in α-syn levels in human neuroblastoma (SH-SY5Y) and melanoma (SK-MEL-2) cell lines following acute exposure to pesticides (rotenone, paraquat, maneb, and glyphosate) using Western blot and flow cytometry. These human cell lines express α-syn endogenously, and overexpression of α-syn (wild type or mutated A53T) can be obtained following recombinant adenoviral transduction. We found that endogenous α-syn levels in the SH-SY5Y neuroblastoma cell line were markedly increased by paraquat, and to a lesser extent by rotenone and maneb, but not by glyphosate. Rotenone also clearly increased endogenous α-syn levels in the SK-MEL-2 melanoma cell line. In the SH-SY5Y cell line, similar differences were observed in the α-syn adenovirus-transduced cells, with a higher increase of the A53T mutated protein. Paraquat markedly increased α-syn in the SK-MEL-2 adenovirus-transduced cell line, similarly for the wild-type or A53T proteins. The observed differences in the propensities of pesticides to increase α-syn levels are in agreement with numerous reports that indicate a potential role of exposure to certain pesticides in the development of Parkinson's disease. Our data support the hypothesis that pesticides can trigger some molecular events involved in this disease and also in malignant melanoma that consistently shows a significant but still unexplained association with Parkinson's disease.
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Affiliation(s)
- Areski Chorfa
- Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (Anses), Unité Maladies Neuro-Dégénératives, 69394 Lyon Cedex 07, France
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Maalej S, Zidi A, Ayadi A, Chorfa A, Bourguiba M, Kilani T, Ben Kheder A, Drira I. [Idiopathic mediastinal fibrosis]. Rev Pneumol Clin 2009; 65:159-163. [PMID: 19524805 DOI: 10.1016/j.pneumo.2009.03.005] [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: 12/28/2007] [Revised: 01/31/2009] [Accepted: 03/06/2009] [Indexed: 05/27/2023]
Abstract
Mediastinal fibrosis or fibrosing mediastinitis is a rare condition characterized by chronic fibrosis occurring in mediastinal structures, in proliferating fibrous scar tissue. The disease may be secondary or idiopathic. The authors report the case of a 46-year-old woman, without a particular past history, who, in December 2006, presented dyspnoea on exertion and a superior vena cava syndrome. Her chest X-ray showed a right laterotracheal opacity. Fiberoptic bronchoscopy revealed concentric tracheobronchial narrowing, severe hyperemia and mucosal edema. The chest computed tomography documented the obstruction of the superior vena cava, the right main bronchus and the right upper lobe bronchus secondary to a mediastinal mass. Mediastinoscopy revealed a hard and dense mass, surrounding the different structures of the mediastinum. Pathologic examination corroborated mediastinal fibrosis. No cause was determined. Prednisone and anticoagulant were prescribed during 2 years with a regression of dyspnoea and the superior vena cava syndrome and an important regression of radiological lesions. In conclusion, prolonged corticosteroids may be efficient in the treatment of idiopathic mediastinal fibrosis.
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Affiliation(s)
- S Maalej
- Service de pneumologie, hôpital Abderrahmen-Mami, pavillon D, rue Abderrahmen-Mami, 2080 Ariana, Tunisie.
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