Bibliografías temáticas / Symbiose intestinale

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Literatura académica sobre el tema "Symbiose intestinale"

Autor: Grafiati
Publicado: 30 de noviembre de 2024
Última modificación: 19 de julio de 2025

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Artículos de revistas sobre el tema "Symbiose intestinale"

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Bayer, Wolfgang, and Karlheiz Schmidt. "Intestinale Dysbiosen erkennen und therapieren." Ernährung & Medizin 32, no. 03 (2017): 105–8. http://dx.doi.org/10.1055/s-0043-116347.

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ZusammenfassungEine Dysbiose bezeichnet im Gegensatz zur Eubiose, Normobiose oder Symbiose Veränderungen der intestinalen Mikrobiota (früher als Darmflora bezeichnet), die mit krankhaften, häufig entzündlichen Symptomen korreliert ist. Ursachen einer Dysbiose sind z. B. eine Überwucherung mit pathogenen Keimen, chronisch entzündliche Darmerkrankungen, aber auch Einflüsse durch Arzneimittel wie Antibiotika, Kortikosteroide etc. Vielfältige weitere Wechselwirkungen sind zu berücksichtigen wie Ernährungseinflüsse, Genussgifte (Rauchen, Alkohol) sowie auch Wechselwirkungen mit dem Hormonsystem, de
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Koga, Ryuichi, Masahiko Tanahashi, Naruo Nikoh, et al. "Host’s guardian protein counters degenerative symbiont evolution." Proceedings of the National Academy of Sciences 118, no. 25 (2021): e2103957118. http://dx.doi.org/10.1073/pnas.2103957118.

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Microbial symbioses significantly contribute to diverse organisms, where long-lasting associations tend to result in symbiont genome erosion, uncultivability, extinction, and replacement. How such inherently deteriorating symbiosis can be harnessed to stable partnership is of general evolutionary interest. Here, we report the discovery of a host protein essential for sustaining symbiosis. Plataspid stinkbugs obligatorily host an uncultivable and genome-reduced gut symbiont, Ishikawaella. Upon oviposition, females deposit “capsules” for symbiont delivery to offspring. Within the capsules, the f
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Ohbayashi, Tsubasa, Kazutaka Takeshita, Wataru Kitagawa, et al. "Insect’s intestinal organ for symbiont sorting." Proceedings of the National Academy of Sciences 112, no. 37 (2015): E5179—E5188. http://dx.doi.org/10.1073/pnas.1511454112.

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Symbiosis has significantly contributed to organismal adaptation and diversification. For establishment and maintenance of such host–symbiont associations, host organisms must have evolved mechanisms for selective incorporation, accommodation, and maintenance of their specific microbial partners. Here we report the discovery of a previously unrecognized type of animal organ for symbiont sorting. In the bean bug Riptortus pedestris, the posterior midgut is morphologically differentiated for harboring specific symbiotic bacteria of a beneficial nature. The sorting organ lies in the middle of the
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Tan, Tze Guan, Esen Sefik, Naama Geva-Zatorsky, et al. "Identifying species of symbiont bacteria from the human gut that, alone, can induce intestinal Th17 cells in mice." Proceedings of the National Academy of Sciences 113, no. 50 (2016): E8141—E8150. http://dx.doi.org/10.1073/pnas.1617460113.

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Th17 cells accrue in the intestine in response to particular microbes. In rodents, segmented filamentous bacteria (SFB) induce intestinal Th17 cells, but analogously functioning microbes in humans remain undefined. Here, we identified human symbiont bacterial species, in particularBifidobacterium adolescentis, that could, alone, induce Th17 cells in the murine intestine. Similar to SFB,B. adolescentiswas closely associated with the gut epithelium and engendered cognate Th17 cells without attendant inflammation. However,B. adolescentiselicited a transcriptional program clearly distinct from tha
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Vermehren, Cláudia Almeida Alves, and Tayna Ofelia Freitas Suarez. "Symbiosis in the microbiome of people with asd and its effects on the brain-intestine linkage." Research, Society and Development 11, no. 17 (2022): e49111736735. http://dx.doi.org/10.33448/rsd-v11i17.36735.

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Researches show that individuals with Autistic Spectrum Disorder (ASD), present an imbalance in the intestinal microbiota, by the study carried out, there is a possibility of mitigating the characteristic symptoms of Autistic Spectrum Disorder, through the symbiosis in the intestinal microbiome. The objective of this bibliographic review is to analyze the influence of symbiosis on the microbiome in the intestine-brain axis in individuals with ASD and to verify the nutritional needs of this individual, in order to support nutritional strategies. Analyzing the gut-brain axis of children with ASD
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Takahashi, Kyoko, Yutaka Sugi, Kou Nakano, et al. "Epigenetic Control of the Host Gene by Commensal Bacteria in Large Intestinal Epithelial Cells." Journal of Biological Chemistry 286, no. 41 (2011): 35755–62. http://dx.doi.org/10.1074/jbc.m111.271007.

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Intestinal epithelial cells (IECs) are continuously exposed to large numbers of commensal bacteria but are relatively insensitive to them, thereby averting an excessive inflammatory reaction. We have previously reported that the hyporesponsiveness of a human IEC line to LPS was primarily the result of a down-regulation of TLR4 gene transcription through epigenetic mechanisms. In the present study we show that DNA methylation in the 5′ region of the TLR4 gene is significantly higher in IECs than in splenic cells in vivo. The methylation was shown to be dependent on the differentiation state of
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Kolopp-Sarda, Marie-Nathalie. "Système immunitaire muqueux et microbiote intestinal : Histoire d’une symbiose." Revue Francophone des Laboratoires 2016, no. 484 (2016): 39–47. http://dx.doi.org/10.1016/s1773-035x(16)30222-2.

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Franke, Maximilian, Benedikt Geier, Jörg U. Hammel, Nicole Dubilier, and Nikolaus Leisch. "Coming together—symbiont acquisition and early development in deep-sea bathymodioline mussels." Proceedings of the Royal Society B: Biological Sciences 288, no. 1957 (2021): 20211044. http://dx.doi.org/10.1098/rspb.2021.1044.

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How and when symbionts are acquired by their animal hosts has a profound impact on the ecology and evolution of the symbiosis. Understanding symbiont acquisition is particularly challenging in deep-sea organisms because early life stages are so rarely found. Here, we collected early developmental stages of three deep-sea bathymodioline species from different habitats to identify when these acquire their symbionts and how their body plan adapts to a symbiotic lifestyle. These mussels gain their nutrition from chemosynthetic bacteria, allowing them to thrive at deep-sea vents and seeps worldwide
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Hagymási, Krisztina, Anna Bacsárdi, Anna Egresi, Evelin Berta, Zsolt Tulassay, and Gabriella Lengyel. "A bélflóra patofiziológai jelentősége és szerepe mint terápiás célpont májbetegségekben." Orvosi Hetilap 159, no. 36 (2018): 1465–74. http://dx.doi.org/10.1556/650.2018.31178.

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Abstract: The community of microorganisms in the intestine, namely gut microbiome lives in symbiosis with the host, contributing to its homeostasis and influencing it simultaneously. It can be suspected that gut microbiome plays a central role in the pathophysiology of intestinal and extraintestinal diseases: determining their development, progress and complications. Recently, intestinal microbiome has become a highlighted field of interest and important topic in research, especially in hepatology. It is in the focus of relevant research as the liver is the organ which meets nutrients, bacteri
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Lindner, Cornelia, Benjamin Wahl, Lisa Föhse, et al. "Age, microbiota, and T cells shape diverse individual IgA repertoires in the intestine." Journal of Experimental Medicine 209, no. 2 (2012): 365–77. http://dx.doi.org/10.1084/jem.20111980.

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Intestinal immunoglobulin A (IgA) ensures host defense and symbiosis with our commensal microbiota. Yet previous studies hint at a surprisingly low diversity of intestinal IgA, and it is unknown to what extent the diverse Ig arsenal generated by somatic recombination and diversification is actually used. In this study, we analyze more than one million mouse IgA sequences to describe the shaping of the intestinal IgA repertoire, its determinants, and stability over time. We show that expanded and infrequent clones combine to form highly diverse polyclonal IgA repertoires with very little overla
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Tesis sobre el tema "Symbiose intestinale"

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Fadlallah, Jehane. "Impact du déficit en IgA sur la symbiose hôte/microbiote intestinal chez l'homme." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066740/document.

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Le système immunitaire muqueux, et plus particulièrement les réponses intestinales IgA sont essentielles non seulement à la défense contre les agents pathogènes, mais aussi au façonnement de la flore intestinale commensale. Dans les modèles murins de déficit en IgA, on observe une dysbiose intestinale majeure associée à une inflammation muqueuse, réversibles après restauration des IgA. Le but de ce travail est de décrire l'impact de l'absence d'IgA chez l'homme sur la composition du microbiote intestinal ainsi que ses conséquences locales et systémiques. L'étude comparative par analyse métagén
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Lextrait, Gaëlle. "The Coreoidea-Caballeronia gut symbiosis : specificity and bacterial fitness determinants." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASB029.

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La stabilité évolutive des relations hôte-microbe est cruciale pour la symbiose. La transmission verticale des symbiotes microbiens des parents à la progéniture est bien établie, mais l'acquisition environnementale par transmission horizontale de symbiotes nécessite des adaptations spécifiques. Les insectes de l'infra-ordre Pentatomomorpha disposent d'un mécanisme efficace pour l'acquisition de leur symbiote à partir du sol. Ces insectes possèdent une architecture intestinale distinctive contenant une région postérieure, appelée M4, composée de centaines de cryptes, constituant une niche spéci
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Jouan, Romain. "The fitness landscape of the soil bacteria Caballeronia insecticola and Sinorhizobium meliloti in diverse natural and synthetic environments." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASB076.

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Les bactéries du sol sont adaptées pour survivre dans ce milieu et pour faire face à divers organismes y vivant, comme d'autres bactéries, champignons, plantes et insectes. Pour mieux connaitre ces adaptations et comprendre si ces adaptations se chevauchent ou sont spécifiques à chacun de ces modes de vie, j'ai utilisé l'approche dites « Transposon sequencing » (Tn-seq) pour identifier les gènes essentiels et conditionnellement essentiels dans deux bactéries du sol bien connues, Caballeronia insecticola et Sinorhizobium meliloti. J'ai utilisé des cribles Tn-seq réalisés dans les milieux nature
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Michaud, Caroline. "Dynamique des symbioses mutualistes hôtes-microbiotes : mode et efficacité de transmission des symbiotes dans les populations du termite xylophage Reticulitermes grassei." Thesis, Tours, 2019. http://www.theses.fr/2019TOUR4027.

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Les symbioses mutualistes sont ubiquistes et jouent un rôle majeur dans le fonctionnement des écosystèmes. Chez les insectes, il est souvent décrit que la spécificité et la stabilité évolutive de ces symbioses mutualistes est due à une transmission verticale stricte des symbiotes des parents à la descendance. Pour tester le rôle de la transmission verticale dans le maintien évolutif des symbioses mutualiste, son exclusivité et son efficacité doivent être étudiées à une échelle évolutive (d’une lignée hôte à une autre) ainsi qu’à une échelle écologique (d’une génération à la suivante). Ce proje
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Peruchi, Aline. "Caracterização e avaliação do potencial de aplicação bioindustrial da bacteriofauna intestinal de Armitermes euamignathus Silvestri, 1901 (Isoptera: Termitidae) e Coptotermes gestroi (Wasmann, 1896) (Isoptera: Rhinotermi." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-16122013-172059/.

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Microrganismos simbiontes são essenciais para a exploração de dietas de baixo valor nutricional, o desenvolvimento, crescimento e a reprodução de seus hospedeiros. Insetos que se alimentam de dieta rica em materiais celulósicos, como é o caso de cupins, apresentam protozoários e/ou bactérias associadas ao trato digestivo que auxiliam na quebra do polímero de celulose e na fixação de nitrogênio. A celulose e a hemicelulose são polímeros estruturais formados por unidades de glicose, sendo a hidrólise desses polímeros de grande interesse industrial para a produção de etanol. O modo mais eficiente
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Libros sobre el tema "Symbiose intestinale"

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Vitapole, Danone, ed. The intestinal microflora, understanding the symbiosis. J. Libbey Eurotext, 2003.

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Capítulos de libros sobre el tema "Symbiose intestinale"

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Weiner, R., and W. Hartig. "Postoperative Intestinal Absorption." In Die Chirurgie und ihre Spezialgebiete Eine Symbiose. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-95662-1_298.

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Kloc, Malgorzata, Ahmed Uosef, Mahmoud Elshawwaf, et al. "The Macrophages and Intestinal Symbiosis." In Results and Problems in Cell Differentiation. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-51849-3_23.

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Hackstein, J. H. P., and P. Langer. "Intestinal Methanogens and Vertebrate Evolution: Symbiotic Archaea are Key Organisms in the Differentiation of the Digestive Tract." In Eukaryotism and Symbiosis. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60885-8_44.

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Paracer, Surindar, and Vernon Ahmadjian. "Introduction." In Symbiosis. Oxford University PressNew York, NY, 2000. http://dx.doi.org/10.1093/oso/9780195118063.003.0001.

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Abstract Symbiosis is an association between two or more different species of organisms. The association may be permanent, the organisms never being separated, or it may be long lasting. This definition excludes populations, which are associations between individuals of the same species. Organisms that are involved in a symbiosis may benefit from, be harmed by, or not be affected by the association. Symbiotic associations are common in nature, from bacteria and fungi that form close alliances with the roots of terrestrial plants to those between giant tube worms and sulfur-oxidizing bacteria that live together in the deepest depths of the oceans. No organism is an island-each one has a relationship to other organisms, directly or indirectly. Even humans bear a reminder of an ancient symbiosis-their cells contain mitochondria, organelles which once were symbiotic bacteria. In addition, each of us harbors several types of viruses and bacteria in our skin and intestinal tract. Similarly, chloroplasts in plant cells are organelles which have evolved from ancient symbiotic photosynthetic bacteria. Bactmia which form symbioses with higher forms of life are themselves hosts to symbiotic viruses. Satellite viruses depend on other viruses for their expression. It is difficult to imagine life and its evolutionary history without symbioses (Khakhina, 1992; Sapp, 1994a,b).
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Severus Gaspar, Bogdan, Monica Profir, Oana Alexandra Rosu, Ruxandra Florentina Ionescu, and Sanda Maria Cretoiu. "The Intestinal Microbiome in Humans: Its Role for a Healthy Life and in the Onset of Diseases." In Physiology. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.113719.

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The discovery of human microbiota shed a different perspective regarding human homeostasis and immune regulation. Gut microbiota comprises a multitude of microorganisms, its composition being host-specific and evolving throughout the lifetime, being subjected to both endogenous and exogenous factors. This subject gained significant interest after the improvement of metagenomic and metabolomic studies. The gut microbiome displays several roles, such as modulating gut permeability, digestive processes, metabolic pathways, and immune responses. Any dysregulation in the complex symbiosis mechanism between humans and the intestinal microbiome might lead to variable diseases. Environmental factors and diet play a very important role in maintaining a healthy gut microbiota. In this chapter, one aims to discuss the core microbiome of healthy subjects and how different stages of dysbiosis can play a role in the initiation and progression of pathogenic mechanisms leading to several diseases, such as gastrointestinal disorders (irritable bowel syndrome, inflammatory bowel diseases, infections or diarrhea associated with antibiotics, and colon cancer), metabolic disorders, obesity, diabetes, and allergies. We underline the importance of diet and environmental factors in modulating gut microorganism concentrations. We shed light on new possible perspectives regarding the modulation of gut microbiota for improving the health status of the host.
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Actas de conferencias sobre el tema "Symbiose intestinale"

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Kawahara, Mitsuki, Shun Itai, and Hiroaki Onoe. "Tube-Shaped In-Vitro Intestinal Gut Model with 3D Isotropic Medium Supply for Bacterial Symbiosis." In 2022 IEEE 35th International Conference on Micro Electro Mechanical Systems Conference (MEMS). IEEE, 2022. http://dx.doi.org/10.1109/mems51670.2022.9699523.

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