Relevant bibliographies by topics / Embryon humain

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Embryon humain'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 July 2024

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Journal articles on the topic "Embryon humain"

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Nau, Jean-Yves. "Embryon humain, président républicain." Revue Médicale Suisse 8, no. 331 (2012): 548a—549a. http://dx.doi.org/10.53738/revmed.2012.8.331.548a.

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L. D. "Création d’un embryon mi-humain mi-animal." Bio Tribune Magazine 24, no. 1 (2007): 5. http://dx.doi.org/10.1007/bf03010318.

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Jouannet, Pierre. "CRISPR-Cas9, cellules germinales et embryon humain." Biologie Aujourd'hui 211, no. 3 (2017): 207–13. http://dx.doi.org/10.1051/jbio/2017032.

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Alessio, Renata L. Dos S., Thémistoklis Apostolidis, Maria de Fátima de S. Santos, and Lionel Dany. "Représentations sociales et embryon humain : une étude comparative Brésil / France." Les cahiers internationaux de psychologie sociale Numéro 92, no. 4 (2011): 371. http://dx.doi.org/10.3917/cips.092.0371.

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Nau, J. Y. "Des cellules souches issues d’un embryon humain obtenu par clonage." Revue Médicale Suisse 62, no. 2471 (2004): 469. http://dx.doi.org/10.53738/revmed.2004.62.2471.0469.

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Giraud, Anne-Sophie. "L’embryon humain en AMP, éléments pour une approche relationnelle." Enfances, Familles, Générations, no. 21 (July 22, 2014): 48–69. http://dx.doi.org/10.7202/1025959ar.

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L’analyse socio-anthropologique de la parenté en assistance médicale à la procréation (AMP) présuppose, qu’on le sache ou non, de donner un certain statut à l’embryon. Cependant, ce statut reste encore largement un point aveugle du débat des sciences sociales. L’anthropologie a beaucoup analysé la façon dont les techniques, et en particulier l’échographie, ont contribué à l’image de l’embryon comme « isolat », séparé en particulier du corps féminin dans lequel il était autrefois enclos et enfoui (Strathern, 1992). L’AMP, avec la congélation et la fécondation in vitro, a encore accentué cette représentation. Cependant, l’observation ethnographique des pratiques d’AMP révèle que l’embryon est en réalité toujours pris dans des réseaux relationnels (Thompson, 2005). Relations, d’une part, à des professionnels qui ont à un certain moment, du fait de leur statut, le pouvoir de sélectionner, détruire ou conserver cet embryon. D’autre part, et surtout, en référence à la parenté, à l’ensemble des personnes impliquées dans la procréation, l’engendrement ou la filiation, et qui de ce fait ont elles aussi un ensemble de pouvoirs et de devoirs à l’égard de cet embryon. Cet article s’appuie sur une enquête par entretiens semi-directifs auprès de 70 professionnels de l’AMP et a pour objectif d’analyser l’embryon en AMP grâce à une approche relationnelle inspirée de l’héritage maussien en matière d’analyse du genre et de la parenté (Théry, 2007). Cette approche permet de décrire autrement la scène de l’AMP et de comprendre comment l’embryon alterne entre diverses positions – entre enfant potentiel et pur matériau organique – selon le système de relations instituées dans lequel il se trouve inscrit. Notre hypothèse est qu’une telle approche éclaire de façons nouvelles les dilemmes parfois aigus des « parents » confrontés à l’embryon congelé hors projet et aux quatre grandes options prévues par la loi française : garder, donner à la recherche, « donner » à un autre couple ou détruire.
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Nau, Jean-Yves. "Le premier embryon humain transgénique a vu le jour aux Etats-Unis." Revue Médicale Suisse 4, no. 158 (2008): 1291. http://dx.doi.org/10.53738/revmed.2008.4.158.1291.

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Nau, Jean-Yves. "Feu vert britannique pour la production in vitro d’un embryon humain issu de deux femmes." Revue Médicale Suisse 1, no. 33 (2005): 2189. http://dx.doi.org/10.53738/revmed.2005.1.33.2189.

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Gaudreault, Marie-Claude. "L’embryon en droit français : titulaire d’un statut juridique ?" Revue générale de droit 28, no. 4 (2016): 467–93. http://dx.doi.org/10.7202/1035617ar.

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Les récents progrès de la biotechnologie ont mené à d’importantes découvertes dans le domaine des sciences de la vie et de la reproduction humaine. Lorsqu ’il s’agit de l’embryon humain, il n’en fallait pas plus pour relancer le débat quant à sa qualification juridique. Dans la mesure où la question s’est posée dès l’époque du droit romain, la problématique n’a donc vraiment de nouveau que le contexte dans lequel elle est maintenant soulevée : la procréation médicalement assistée. Par un rappel historique, l’auteure nous présente les diverses règles qui ont trouvé et qui continuent toujours de trouver application selon le droit civil français. L’on constatera ainsi que le droit a toujours hésité à reconnaître une personnalité juridique à l’enfant conçu. Par la suite, l’analyse s’arrête aux modifications apportées à la législation française en juillet 1994, par les lois dites « bioéthiques ». Encore une fois, la question semble simple; sommes-nous en présence d’un sujet ou d’un objet de droit ? Sans définir de statut précis pour l’embryon humain, le législateur français vient, par cet ensemble de lois, à tout le moins encadrer pour la première fois l’assistance médicale à la procréation et par le fait même, établir une protection pour tout embryon issu de cette dernière.
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Abid, B., R. Douard, N. Hentati, et al. "Reconstruction tridimensionnelle informatisée du segment rétrohépatique de la veine cave inférieure d’un embryon humain de 20mm." Morphologie 97, no. 317 (2013): 59–64. http://dx.doi.org/10.1016/j.morpho.2013.04.002.

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Dissertations / Theses on the topic "Embryon humain"

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Lira, Dos Santos Renata. "Représentations sociales et embryon humain : une approche psychosociale comparative Brésil/France." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM3004.

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L'embryon humain est aujourd'hui au centre d'une multitude de préoccupations : personnelles, familiales, scientifiques, sociales, politiques et éthiques. Sa manipulation dans le cadre de la recherche scientifique constitue aujourd'hui une question controversée et polémique au Brésil et en France. En s'appuyant sur la théorie des représentations sociales, nous nous intéressons à comprendre comment des éléments contextuels façonnent la construction de l'embryon humain en tant qu'objet social. Nous avons entrepris un programme de recherche pluri-méthodologique afin d'étudier la production et l'actualisation des représentations concernant l'embryon humain et la recherche sur l'embryon humain en fonction des différentes dimensions contextuelles d'ordre cognitif et social au Brésil et en France. Ce programme s'inscrit dans une approche multi-niveaux des représentations sociales dont l'enjeu théorico-méthodologique est l'étude des phénomènes représentationnels dans différents lieux de production et d'actualisation (formation des savoirs et des attitudes, communications sociales, pratiques institutionnelles ; situations de naturalité et situations provoquées d'expression des représentations). Le croisement des différentes techniques nous permet d'accéder à des observations qui corroborent pour montrer l'incidence du social dans la construction de l'embryon humain en tant qu'objet de représentation et de statuer sur le caractère local/global de cette incidence. Nous discutons l'ensemble de ces résultats afin de montrer l'intérêt heuristique des représentations sociales dans les approches comparatives contextuelles en psychologie sociale et notamment dans le champ de la bioéthique<br>The human embryo is at the center of a wide range of personal, familial, scientific, social, political and ethical concerns. Scientific use of the human embryo represents today a controversial issue in Brazil and France. Using the theory of social representations, we investigate how contextual elements shape the construction of the human embryo qua social object. We have undertaken a multi-methodological study to determine the production and realization of the representations regarding the human embryo and the scientific research on human embryos according to the different contextual dimensions of cognitive and social development in Brazil and in France. This program is a multi-level approach using social representations for which the theoretical and methodological challenge is the study of representational phenomena in different places of production and realization (construction of knowledge and attitudes, social communication, institutional practices; situations of naturalness and situations induced by the expression of the representations). The unification of different techniques has allowed us access to convergent observations that show the impact of the social construction of the human embryo qua represented object and to arbitrate the local / global character of that impact. In the discussion of the results we demonstrate the heuristic interest of the approach of social representations in the context of comparative approaches in social psychology, particularly in the field of bioethics
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Breuer, Clemens. "Person von Anfang an ? : der Mensch aus der Retorte und die Frage nach dem Beginn des menschlichen Lebens /." Paderborn : F. Schöningh, 2003. http://catalogue.bnf.fr/ark:/12148/cb390482645.

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Boumela, Imene. "Etude des régulateurs d’apoptose de la famille Bcl-2 au cours du développement embryonnaire précoce humain." Thesis, Montpellier 1, 2012. http://www.theses.fr/2012MON1T025.

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Des signes d'apoptose, une forme de suicide cellulaire programmé, ont été décrits dans les gamètes et l'embryon préimplantatoire de nombreuses espèces de mammifères y compris l'homme, à la fois in vitro et in vivo. Parce que le développement embryonnaire serait lié à un équilibre entre prolifération et mort cellulaire, l'étude du contrôle génétique de l'apoptose dans les embryons préimplantatoires est d'une importance considérable. Par ailleurs, on sait que la qualité des gamètes (en particulier des ovocytes) influencerait leur propre survie mais également le développement embryonnaire précoce. Les régulateurs d'apoptose appartenant à la famille Bcl-2 occupent une place centrale dans les voies de décision de vie ou de mort cellulaire. Dans le premier volet de ce travail de thèse, nous avons analysé l'expression des membres de la famille Bcl-2 lors de la transition ovocyte-embryon au troisième jour (J3) et montré que les trois sous-groupes de la famille Bcl-2 présentent un profil d'expression dynamique tout au long du développement embryonnaire précoce humain. La régulation des niveaux d'expression de ces gènes au cours du développement embryonnaire précoce pourrait donc s'avérer cruciale pour le contrôle de la survie embryonnaire, notamment sous des conditions de culture suboptimales. Dans le second volet, nous nous sommes intéressés à l'analyse du transcriptome au cours du développement embryonnaire précoce humain, et plus particulièrement lors de la spécification du trophectoderme. La confrontation du transcriptome des embryons à J3 avec celui des cellules du trophectoderme nous a permis de mettre en évidence des processus moléculaires qui pourraient jouer un rôle important lors de la différenciation du TE, tels que la stéroïdogenèse et les régulations épigénétiques. En plus de son intérêt fondamental, la connaissance de l'expression génique et des mécanismes moléculaires régulant des processus clés tels que l'apoptose et la différenciation cellulaire au cours du développement embryonnaire préimplantatoire peut permettre d'ouvrir des pistes de recherche diagnostique et thérapeutique intéressantes<br>Apoptosis, a form of cell death by self-destruction, has been reported in gametes and preimplantation embryos both in vitro and in vivo. Recent evidence suggests that cell death processes can impact embryo developmental competence. Moreover, quality of the gametes (particularly of the oocytes) is relevant not only for their own survival but can also influence embryonic development during the early cleavage stages. Thus, the investigation of apoptosis-related genes and mechanisms in early embryos is crucial. Bcl-2 family proteins, through balanced interactions between pro- and anti-apoptotic members, play a pivotal role in controlling cell life and death. In a first part, we analyzed the expression patterns of Bcl-2 family members during the human oocytes-to-day 3 embryo transition and showed that several members were differentially regulated. The regulation of the expression levels of anti- and pro-apoptotic Bcl-2 family members during early embryonic development may therefore be crucial for the control of early embryo survival, especially under suboptimal culture conditions. In a second part, we were interested in studying the transcriptome during human early embryonic development, and particularly during the trophectoderm specification. The comparison of the transcriptome of embryos on day 3 with that of trophectoderm cells allowed us to identify new molecular processes that could play an important role during trophectoderm differentiation and development, such as steroidogenesis and epigenetic regulations. In addition to its fundamental interest, a better knowledge of gene expression and molecular mechanisms regulating key processes such as apoptosis and cell differentiation during human early embryonic development may provide new guides for diagnosis and therapeutic strategies
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Grillo, Jean-Marie. "Etude du nucléole de l'embryon humain pendant les premiers stades de la segmentation : activation des gènes ribosomiques au cours de la nucléologenèse." Aix-Marseille 2, 1990. http://www.theses.fr/1990AIX21902.

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Lornage, Jacqueline. "Congélation et cryoconservation des embryons humains." Lyon 1, 1994. http://www.theses.fr/1994LYO1T237.

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Lévy, Rachel. "Étude par immunomarquage des anomalies nucléaires et cytoplasmiques des embryons humains obtenus en fécondation in vitro : apoptose." Lyon 1, 1998. http://www.theses.fr/1998LYO1T186.

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Legros, Eve Z. "L'embryon humain : approche pluridisciplinaire pour une tentative de compréhension du concept d'embryon humain en vue d'une amélioration de son insertion dans la sphère juridique." Lille 2, 2003. http://www.theses.fr/2003LIL20008.

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Cette thèse a pour ambition de comprendre l'embryon humain et son statut, de comprendre pourquoi les propositions concernant le statut actuel de l'embryon ne sont pas satisfaisantes ? Il faut comprendre, ce qu'est l'embryon humain et de quelles façons il est envisagé. Il est question de biologie, de techniques médicales, mais également de philosophie, de religion, d'âme, de volonté, de droit. L'embryon n'existe t-il pas d'un point de vue purement biologique ? N'existe t-il pas d'un point de vue purement spirituel ? Ne mérite t-il pas que l'on pense à lui comme ce qu'il est : l'enfant à naître est le même que celui juste né, à quelques divisions cellulaires près. Il sera question de réflexion qui s'arroge le droit de dire ce qu'il est ou ce qu'il n'est pas ? Quels sont les principes qui guident la réflexion éthique ? Faut-il être près de l'homme ou de la société pour concevoir un statut, ou au contraire mieux vaut s'en éloigner et se rapprocher de Dieu (?) de l'absolu (?) de la nature humaine pour décider ce qu'est ou n'est pas l'embryon<br>This thesis has the aim of understanding the human embryo and its status, and understanding why the proposals concerning the status are not satisfactory. It si necessary to understand what is the human embryo , and in which way it is viewed. It is a question not only of biology and medical techniques, but equally of philosophy, religion, soul, wish, and law. Does it exist purely from a biological point of view ? Does it exist purely from a spiritual point of view ? Does it merit that we think that a child to be born is the same as a new born child but with some cellular divisions still to be made ? It would require deep thougth for the law to take upon itself to say that it is or is not. What are the principles that guide ethical thought ? It is up to man or society to conceive a status, or otherwise better to distance oneself and leave it to the God of Judgement of human nature to decide what is or is not an embryo ?
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Swinnen, Nina. "Microglia in the embryonic brain and spinal cord during the development of neuronal networks." Paris 6, 2013. http://www.theses.fr/2013PA066321.

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Les cellules microgliales sont les cellules immunitaires résidentes du système nerveux central (SNC). Elles peuvent déjà être détectées au début du développement embryonnaire du SNC. Dans ce projet de recherche nous avons étudié l'invasion et les caractéristiques phénotypiques des cellules microgliales du cerveau embryonnaire. Nos résultats demontrent que les microglies dans le cortex embryonnaire ont un phénotype de « repos »; elles expriment peu de marqueurs d'activation et n'ont presque aucun canaux K+ à rectification entrante. Pourtant, elles sont très dynamiques comme dans le cerveau adulte. Au cours du développement du plexus choroïde, des microglies activées au phenotype phagocytique s'accumulent à un moment coïncidant avec un pic d'apoptose dans cette structure. La proliferation des microglies dans la moelle épinière embryonnaire dépend de récepteurs P2X7. Nous avons retrouvé les mêmes récepteurs sur les cellules microgliales du cortex. Diverses études ont demontré que les infections et l'activation immunitaire pendant la grossesse donnent un risque accru de développement de maladies neuro-psychiatriques chez les enfants. Puisque les microglies sont les cellules immunitaires du SNC et qu’elles sont présentes au cours du développement embryonnaire, nous avons examiné si elles sont activées après une reaction immunitaire maternelle pendant la grossesse. Nos résultats indiquent qu’il n'y a aucune augmentation de densité ou d’activation des cellules microgliales dans le cerveau embryonnaire après induction d’une réaction immunitaire maternelle<br>The microglia are the resident immune cells of the central nervous system (CNS). They can be detected from the beginning of the development of the embryonic CNS. In this project we have studied the invasion and phenotypic characteristics of the microglial cells in the embryonic brain. Our results show that embryonic microglia in the cortex have a “resting” phenotype; the express little activation markers and have little to no inward rectifying K+ channels. However, they are very dynamic like observed in the adult brain. During development of the choroid plexus, activated microglia with a phagocytic phenotype accumulate at the moment apoptotic cells are present in this structure. The proliferation of microglial in the embryonic spinal cord depends on P2X7 receptors. We found the same receptors to be present on the microglia in the cortex. Different studies have shown that infections and immune activation during pregnancy increase the risk on neuropsychiatric disorders in the offspring. Since microglia are the immune cells of the CNS and they are present early in development, we studied the effect of maternal inflammation during pregnancy on these cells. Our results indicate that there is no effect on microglia density and activation after maternal immune activation
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Tesson-Werner, Mathilde Zaccabri Annie. "Transferts embryonnaires en FIV et ICSI facteurs pronostiques /." [S.l.] : [s.n.], 2009. http://www.scd.uhp-nancy.fr/docnum/SCDMED_T_2009_TESSON_WERNER_MATHILDE.pdf.

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Reignier, Arnaud. "Analyses du développement embryonnaire humain pré-implantatoire : comprendre pour mieux choisir." Thesis, Nantes, 2020. http://www.theses.fr/2020NANT1033.

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Depuis les débuts de !'Assistance Médicale à la Procréation, le choix de l'embryon à transférer est une problématique majeure. En plus de l'évaluation morphologique embryonnaire, la technologie time-lapse avec l'analyse de la morphocinétique offre des résultats prometteurs mais pas une amélioration franche de la sélection embryonnaire étant donné l'hétérogénéité des cohortes étudiées et le caractère manuel de l'annotation embryonnaire. L'analyse externalisée de plusieurs modèles morphocinétiques prédictifs de la grossesse, et principalement le KIDScore ™ Day 5, sur notre base de données a confirmé une corrélation entre le score embryonnaire et les chances de grossesse mais aussi leur faible pouvoir prédictif de la grossesse. Une revue de la littérature conclut à l'absence de paramètre morphocinétique capable de prédire suffisamment précisément le statut chromosomique de l'embryon. La technologie time-lapse ne peut donc pas être utilisée seule dans ce but et ne peut pas substituer la biopsie embryonnaire et l'analyse génomique associée dans le DPI-A ou la recherche de translocation. Les résultats précédents pouvant être expliqués par une hétérogénéité dans l'annotation manuelle de la morphocinétique embryonnaire couplée à l'absence d'étude multicentrique de grande échelle, nous avons développé un outil d'annotation morphocinétique totalement automatisé par analyse d'images. Cet outil est capable d'annoter rapidement et de façon reproductible des larges bases de données morphocinétiques<br>Since the beginning of Assisted Reproduction, the choice of the embryo to be transferred has been a major issue. ln addition to the morphological evaluation, time-lapse technology with morphokinetic analysis offers promising results but not a clear improvement in embryo selection, given the heterogeneity of the cohorts studied and the manual nature of embryo annotation. The externalized analysis of several morphokinetic models predictive of pregnancy, mainly KIDScore™Day 5, on our database has confirmed a correlation between embryo score and chances of pregnancy but also their low predictive power of pregnancy. A review of the literature concluded that no morphokinetic parameter is capable of predicting the chromosomal status of the embryo with sufficient accuracy. Therefore, time-lapse technology alone cannot be used for this purpose and cannot substitute embryo biopsy and associated genomic analysis in PGD-A or translocation research. Since the previous results can be explained by heterogeneous manual annotation of morphokinetics events in addition to the lack of large-scale studies, we have developed a fully automated morphokinetic annotation tool by image analysis. This tool is able to quickly and reproducibly annotate large morphokinetic databases
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Books on the topic "Embryon humain"

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Fédida, Pierre. L' embryon humain est-il humain? Presses universitaires de France, 1996.

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Dhonte-Isnard, Emmanuelle. L' embryon humain in vitro et le droit. L'Harmattan, 2004.

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Congrès de la Société suisse de bioéthique (1er 1986 Lausanne). L' embryon: Un homme : actes du Congrès de Lausanne 1986. Société suisse de bioéthique, 1987.

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Constant, Marc. Atlas d'echoembryologie: Biométrie embryo-foetale. Vigot, 1993.

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Brigitte, Feuillet-Le Mintier, and Université de Rennes. Centre de recherche juridique et judiciaire de l'Ouest., eds. L' embryon humain: Approche multidisciplinaire : actes du colloques des 9 et 10 novembre 1995. Economica, 1996.

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Thevoz, Jean-Marie. Entre nos mains, l'embryon: Recherche bioéthique. Labor et Fides, 1990.

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A, Campana, Revaz Claude, and Société suisse de gynécologie, eds. Fécondation in vitro et transfert d'embryon. Éditions Médecine et Hygiène, 1987.

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N, Fitch, and Paradice B. A, eds. Pathology of the human embryo and previable fetus: An atlas. Springer-Verlag, 1990.

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Dieu, la médecine et l'embryon. Odile Jacob, 2003.

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Dagognet, François, (1924- ...)., Préface, ed. Le corps-autre et les sources de l'altérité: L'interface bio-psycho-culturelle. Boeck Université, 2011.

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Book chapters on the topic "Embryon humain"

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Sharma, Akriti, Mette H. Stensen, Erwan Delbarre, et al. "Detecting Human Embryo Cleavage Stages Using YOLO V5 Object Detection Algorithm." In Communications in Computer and Information Science. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-17030-0_7.

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AbstractAssisted reproductive technology (ART) refers to treatments of infertility which include the handling of eggs, sperm and embryos. The success of ART procedures depends on several factors, including the quality of the embryo transferred to the woman. The assessment of embryos is mostly based on the morphokinetic parameters of their development, which include the number of cells at a given time point indicating the cell stage and the duration of each cell stage. In many clinics, time-lapse imaging systems are used for continuous visual inspection of the embryo development. However, the analysis of time-lapse data still requires the evaluation, by embryologists, of the morphokinetic parameters and cleavage patterns, making the assessment subjective. Recently the application of object detection in the field of medical imaging enabled the accurate detection of lesion or object of interest. Motivated by this research direction, we proposed a methodology to detect and track cells present inside embryos in time-lapse image series. The methodology employed an object detection technique called YOLO v5 and annotated the start of observed cell stages based on the cell count. Our approach could identify cell division to detect cell cleavage or start of next cell stage accurately up to the 5-cell stage. The methodology also highlighted instances of embryos development with abnormal cell cleavage patterns. On an average the methodology used 8 s to annotate a video frame (20 frames per second), which will not pose any delay for the embryologists while assessing embryo quality. The results were validated by embryologists, and they considered the methodology as a useful tool for their clinical practice.
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Lerou, Paul. "Embryonic Stem Cell Derivation from Human Embryos." In Methods in Molecular Biology. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-201-4_3.

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Bobbert, Monika. "Human Embryos and Embryonic Stem Cells – Ethical Aspects." In Stem Cells, Human Embryos and Ethics. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6989-5_17.

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Van der Elst, Josiane. "Embryo Quality and Freezing Tolerance: Cryopreservation of Human Embryos." In Assessment of Mammalian Embryo Quality. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0343-8_4.

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Cippitani, Roberto. "Human Embryo." In Dictionary of Statuses within EU Law. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00554-2_37.

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Pool, Thomas B., John Schoolfield, and David Han. "Human Embryo Culture Media Comparisons." In Embryo Culture. Humana Press, 2012. http://dx.doi.org/10.1007/978-1-61779-971-6_21.

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Peura, Teija T., Julia Schaft, and Tomas Stojanov. "Derivation of Human Embryonic Stem Cell Lines from Vitrified Human Embryos." In Methods in Molecular Biology. Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60761-369-5_2.

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Lee, Patrick. "Distinguishing Embryos from Non-embryos." In Is this Cell a Human Being? Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20772-3_6.

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Glujovsky, Demian, and Claudio F. Chillik. "Evaluation of the Uterus Prior to Embryo Transfer." In Human Embryo Transfer. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-1115-0_1.

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Chawla, Monika, Jayaprakash Divakaran, Michael H. Fakih, and Amal Al-Shunnar. "Is There A Role for Tubal Transfers?" In Human Embryo Transfer. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-1115-0_10.

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Conference papers on the topic "Embryon humain"

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Odorčák, Juraj. "Robotické bábätká." In 100 let R. U. R. Masaryk University Press, 2020. http://dx.doi.org/10.5817/cz.muni.p210-9688-2020-5.

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In the play R. U. R. Karel Čapek envisioned a futuristic society where robots not only take all our jobs, but also all our human vices and virtues. Th e downfall of humankind is in the end symbolized by the love of and between robots. Love and reproduction are, therefore, one of the main themes of the whole plot of R. U. R. People create robots. Robots create more robots. Robots destruct people. But what if robots could create more humans? Th is article is focused on the topic of robotic creation of humans. Th e main line of reasoning is dedicated to the analysis of the near future possibility of autonomous artifi cial human embryo selection. Current studies show, that AI -assisted pattern recognition provides space for dramatic progress in the eff ectivity of grading of the viability of embryos. Th e combination of this technology with other anticipated technologies could one day create prospects for a full robotic reproduction of humans. Th e article presents some arguments for and against the idea that humans could or should one day become robotic babies.
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Hassan, H. J., A. Leonardi, C. Chelucci, R. Guerriero, P. M. Mannucci, and C. Peschle. "EXPRESSION IN ONTOGENESIS OF HUMAN BLOOD COAGULATION FACTORS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644610.

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We have analyzed the expression of several blood coagulation factors (IX, VIII, X, fibrinogen chains) and inhibitors (antithrombin III, protein C) in human embryonic and fetal livers, obtained from legal abortions at 6-11 week post-conception. The age was established by morphologic staging and particularly crown-rump lenght measurement.Total cellular RNA was isolated from partially purified hepatocytes or total liver homogenate using the guanidine isothiocyanate method. Poly(A)+ RNA was selected by oligodT cellulose chromatography. The size and the number of the embryonic and fetal transcripts are equivalent to those observed in adult liver, as evaluated by Northern blot analysis of total or poly(A)+ RNA hybridized to human cDNA probes.The level of coagulation factor transcripts in embryonic and fetal liver was evaluated by dot hybridization of total RNA (0.5-10 ug), as compared to RNA extracted from normal adult liver biopsies. The expression of blood coagulation factors in embryos is generally reduced for all factors, but at a different degree. In 5-11 wk liver, the level of factor IX is 5-10% of that observed in adults, while fibrinogen, protein C, antithrombin III RNA level rises from 25 to 50% and factor X is expressed at a level comparable to that observed in adult liver.We conclude that during these stages of development blood coagulation factors are expressed according to three different time, curves, possibly due to the effect of different types of regulatory mechanisms.
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"Epigenetic landscape in human aneuploid embryos." In Bioinformatics of Genome Regulation and Structure/Systems Biology (BGRS/SB-2022) :. Institute of Cytology and Genetics, the Siberian Branch of the Russian Academy of Sciences, 2022. http://dx.doi.org/10.18699/sbb-2022-255.

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Saito, Atsushi, Masashi Kishimoto, Kazuki Kasahara, et al. "Spatiotemporal statistical models of a human embryo." In International Forum on Medical Imaging in Asia, edited by Hiroshi Fujita, Feng Lin, and Jong Hyo Kim. SPIE, 2019. http://dx.doi.org/10.1117/12.2522101.

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Wicaksono, R. Satrio Hariomurti, Ali Akbar Septiandri, and Ade Jamal. "Human Embryo Classification Using Self-Supervised Learning." In 2021 2nd International Conference on Artificial Intelligence and Data Sciences (AiDAS). IEEE, 2021. http://dx.doi.org/10.1109/aidas53897.2021.9574328.

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Ou, Zhaojie, Qingfeng Zhang, Yan Li, et al. "Classification of human embryos by using deep learning." In International Conference on Cloud Computing, Performance Computing, and Deep Learning (CCPCDL 2023), edited by Kannimuthu Subramaniam and Sandeep Saxena. SPIE, 2023. http://dx.doi.org/10.1117/12.2678962.

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Jamal, Ade, Aditya Pratama Dharmawan, Ali Akbar Septiandri, Pritta Amelia Iffanolida, Oki Riayati, and Budi Wiweko. "Densely U-Net Models for Human Embryo Segmentation." In 2023 4th International Conference on Artificial Intelligence and Data Sciences (AiDAS). IEEE, 2023. http://dx.doi.org/10.1109/aidas60501.2023.10284599.

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Filas, Benjamen A., and Larry A. Taber. "Surface Strains in the Looping Embryonic Chick Heart Measured Using Optical Coherence Tomography." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176148.

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The heart is the first functional organ in the vertebrate embryo. In the chick embryo, the heart begins beating at Hamburger and Hamilton [1] stage 10 (approximately 35 hours of a 21-day incubation period). The initially straight heart tube bends and twists into a c-shaped tube before reaching stage 12 (approximately 48 hours incubation). This process, known as c-looping, marks one of the first visible signs of left-right asymmetry in the embryo. Incorrect looping is one cause of congenital heart defects, where significant malformations occur in roughly 1% of human live births [2]. Understanding the mechanisms that drive c-looping could lend insight into the processes causing some of these defects.
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Wang, Hua, Linwei Qiu, Jingfei Hu, and Jicong Zhang. "I2CNet: An Intra- and Inter-Class Context Information Fusion Network for Blastocyst Segmentation." In Thirty-First International Joint Conference on Artificial Intelligence {IJCAI-22}. International Joint Conferences on Artificial Intelligence Organization, 2022. http://dx.doi.org/10.24963/ijcai.2022/197.

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The quality of a blastocyst directly determines the embryo's implantation potential, thus making it essential to objectively and accurately identify the blastocyst morphology. In this work, we propose an automatic framework named I2CNet to perform the blastocyst segmentation task in human embryo images. The I2CNet contains two components: IntrA-Class Context Module (IACCM) and InteR-Class Context Module (IRCCM). The IACCM aggregates the representations of specific areas sharing the same category for each pixel, where the categorized regions are learned under the supervision of the groundtruth. This aggregation decomposes a K-category recognition task into K recognition tasks of two labels while maintaining the ability of garnering intra-class features. In addition, the IRCCM is designed based on the blastocyst morphology to compensate for inter-class information which is gradually gathered from inside out. Meanwhile, a weighted mapping function is applied to facilitate edges of the inter classes and stimulate some hard samples. Eventually, the learned intra- and inter-class cues are integrated from coarse to fine, rendering sufficient information interaction and fusion between multi-scale features. Quantitative and qualitative experiments demonstrate that the superiority of our model compared with other representative methods. The I2CNet achieves accuracy of 94.14% and Jaccard of 85.25% on blastocyst public dataset.
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Guan, Benjamin X., Bir Bhanu, Prudence Talbot, and Sabrina Lin. "Automated Human Embryonic Stem Cell Detection." In 2012 IEEE Second International Conference on Healthcare Informatics, Imaging and Systems Biology (HISB). IEEE, 2012. http://dx.doi.org/10.1109/hisb.2012.25.

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Reports on the topic "Embryon humain"

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Hansen, Peter J., Zvi Roth, and Jeremy J. Block. Improving oocyte competence in dairy cows exposed to heat stress. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7598163.bard.

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Original Objectives. The overall goal is to develop methods to increase pregnancy rate in lactating dairy cows exposed to heat stress through methods that minimize damage to the oocyte and embryo caused by heat stress. Objectives were as follows: (1) examine the protective effects of melatonin on developmental competence of oocytes exposed to elevated temperature in vitro; (2) test whether melatonin feeding can improve developmental competence of oocytes in vivo and, if so, whether effects are limited to the summer or also occur in the absence of heat stress; and (3) evaluate the effectiveness of improving fertility by facilitating follicular turnover in the summer and winter. Revised Objectives. (1) Examine protective effects of melatonin and follicular fluid on developmental competence of oocytes exposed to elevated temperature in vitro; (2) examine the protective effects of melatonin on developmental competence of embryos exposed to elevated temperature in vitro; (3) evaluate effectiveness of improving fertility by administering human chorionicgonadotropin (hCG) to increase circulating concentrations of progesterone and evaluate whether response to hCG depends upon genotype for four mutations reported to be related to cow fertility; and (4) identify genes with allelic variants that increase resistance of embryos to heat shock. Background. The overall hypothesis is that pregnancy success is reduced by heat stress because of damage to the oocyte and cleavage-stage embryo mediated by reactive oxygen species (ROS), and that fertility can be improved by provision of antioxidants or by removing follicles containing oocytes damaged by heat stress. During the study, additional evidence from the literature indicated the potential importance of treatment with chorionicgonadotropin to increase fertility of heat- stressed cows and results from other studies in our laboratories implicated genotype as an important determinant of cow fertility. Thus, the project was expanded to evaluate hCG treatment and to identify whether fertility response to hCG depended upon single nucleotide polymorphisms (SNP) in genes implicated as important for cow fertility. We also evaluated whether a SNP in a gene important for cellular resistance to heat stress (HSPA1L, a member of the heat shock protein 70 family) is important for embryonic resistance to elevated temperature. Major conclusions, solutions &amp; achievements. Results confirmed that elevated temperature increases ROS production by the oocyte and embryo and that melatonin decreases ROS. Melatonin reduced, but did not completely block, damaging effects of heat shock on the oocyte and had no effect on development of the embryo. Melatonin was protective to the oocyte at 0.1-1 μM, a concentration too high to be achieved in cows. It was concluded that melatonin is unlikely to be a useful molecule for increasing fertility of heat-stressed cows. Treatment with hCG at day 5 after breeding increased first-service pregnancy rate for primiparous cows but not for multiparous cows. Thus, hCG could be useful for increasing fertility in first-parity cows. The effectiveness of hCG depended upon genotype for a SNP in COQ9, a gene encoding for a mitochondrial-function protein. This result points the way to future efforts to use genetic information to identify populations of cows for which hormone treatments will be effective or ineffective. The SNP in HSPA1L was related to embryonic survival after heat shock. Perhaps, genetic selection for mutations that increase cellular resistance to heat shock could be employed to reduce effects of heat stress on fertility. Implications, both scientific and agricultural. This project has resulted in abandonment of one possible approach to improve fertility of the heat-stressed cow (melatonin therapy) while also leading to a method for improving fertility of primiparous cows exposed to heat stress (hCG treatment) that can be implemented on farms today. Genetic studies have pointed the way to using genetic information to 1) tailor hormonal treatments to cow populations likely to respond favorably and 2) select animals whose embryos have superior resistance to elevated body temperatures.
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Bhaskaran, Jahnavi, and Natasha Mutebi. Human stem cell-based embryo models. Parliamentary Office of Science and Technology, UK Parliament, 2024. http://dx.doi.org/10.58248/pn716.

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This POSTnote summarises the emerging technology of human stem cell-based embryo models, discussions around their regulation and their wider ethical societal implications. It introduces the scientific background and the potential applications of the models. It also outlines the challenges and opportunities in introducing their regulation and discusses stakeholder initiatives to address regulatory gaps.
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Bushman, Wade. An Embryonic Growth Pathway is Reactivated in Human Prostate Cancer. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada442996.

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Bushman, Wade. An Embryonic Growth Pathway is Reactivated in Human Prostate Cancer. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada420333.

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Zuckerman, Kenneth S. Reparative Medicine: Production of Erythrocytes & Platelets from Human Embryonic Stem Cells. Defense Technical Information Center, 2012. http://dx.doi.org/10.21236/ada566171.

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Bolivar, Ángela, Juan Roberto Paredes, María Clara Ramos, Emma Näslund-Hadley, and Gustavo Wilches-Chaux. Water to Treasure. Inter-American Development Bank, 2015. http://dx.doi.org/10.18235/0006300.

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"We are mostly water." True or false? Strange as it may seem, it's true! Our bodies are 75 percent water. In fact, some animals such as jellyfish are up to 99 percent water - about the same amount as a human embryo! All living things need at least some water, and all also return water to the environment. We renew ourselves constantly through water; if we didn't, we would die.
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Morin, S., L. L. Walling, Peter W. Atkinson, J. Li, and B. E. Tabashnik. ets for CRISPR/Cas9-mediated gene drive in Bemisia tabaci. United States-Israel Binational Agricultural Research and Development Fund, 2021. http://dx.doi.org/10.32747/2021.8134170.bard.

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The goal of our BARD proposal was to build both the necessary infrastructure and knowledge for using the CRISPR/Cas9-based gene drive system to control the whitefly Bemisia tabaci. Our research focused on achieving three main goals: (1) establishing a CRISPR/Cas9 gene-editing system for producing genetically-edited B. tabaci; (2) generating and testing CRISPR/Cas9-mediated mutations targeting genes that represent two gene drive strategies: population replacement and population suppression; (3) using computer modeling to optimize strategies for applying CRISPR/Cas9 to control B. tabaci populations in the field. CRISPR gene drive is one of the most promising strategies for diminishing the negative impacts of harmful insects. This technique can introduce mutations into wild populations of pests that reduce their ability to cause damage, reduce their population size, or both. In principle, this can be selfsustaining because mutations carried by relatively few insects can increase in frequency and spread quickly throughout wild populations. Because of this sustainability and the potential benefits to society, agricultural gene-drive systems are most likely to be funded by government agencies, foundations, and grower associations; as with sterile insect releases and most biocontrol programs. Although gene drives have received intensive study in Drosophila and mosquito vectors of human disease, we were one of the first teams pursuing this approach for crop pests. Our project was also one of the first to address CRISPR gene drive in the Hemiptera, an insect order that includes hundreds of pest species. We focused on developing and implementing CRISPR gene drive to reduce the massive damage caused by B. tabaci. This haplodiploid insect is one of the world's most devastating crop pests. Whereas extensive work by others explored CRISPR in diploid species, our project pioneered application of this revolutionary technology to haplodiploids, which have a distinct system of inheritance that presents special challenges and opportunities. Our project has achieved several breakthroughs, including publication of the first paper analyzing CRISPR gene drive in haplodiploids (Li et al. 2020, see next section). Our modeling results from this landmark study demonstrate that CRISPR gene drive can work in haplodiploids, especially if fitness costs associated with the driver allele are low or nil. Our paper was the first to provide a conceptual framework for evaluating and optimizing CRISPR gene drive strategies for managing B. tabaci and other haplodiploid pests. Our breakthroughs in the laboratory have created the infrastructure needed to develop CRISPR for controlling B. tabaci. We established a microinjection system enabling us to introduce CRISPR-derived mutations into B. tabaci embryos. We have used this system to generate and track inherited eye-color mutants of B. tabaci. We have identified and cloned germline promoters, and demonstrated their function in transgenic B. tabaci embryos and other hemipteran insects. We have also developed a tool to easily identify B. tabaci harboring CRISPR-mediated mutations by tagging target genes using a transgenic fluorescent marker. The successful completion of our project provides all the knowledge and infrastructure essential for developing a novel genetic approach for B. tabaci control, which can serve as a non-chemical "green" alternative for managing this global pest. We predict that our discoveries will accelerate the development of the CRISPR gene drive technique for reducing the numbers of this pest and the damage it causes. Still, realization of the benefits of gene-drive technology for pest control will require sustained attention to potential environmental and societal impacts, as well as regulatory and implementation challenges. Given the great promise of this technology and the urgent need for better control methods, we expect that guidance documents and regulations will be in place to allow the scientific community to safely move gene drives for pest control from the laboratory to field trials.
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In vitro fertilisation & embryo research. Parliamentary Office of Science and Technology, 1989. http://dx.doi.org/10.58248/pn006.

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