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Dissertations / Theses on the topic 'Digestive Function'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Earing, Jennifer Elizabeth. "COMPARISON OF DIGESTIVE FUNCTION IN YOUNG AND MATURE HORSES." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/142.

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While forage plays an important role in equine nutrition, little research has been conducted evaluating fiber utilization by young horses. Therefore, studies were conducted to compare in vivo digestibility and digesta passage in weanlings and mature horses (Exp 1) and yearlings and mature horses (Exp 2). All horses were fed forage-based diets at the same rate (on a metabolic BW basis; Exp 1: 67% alfalfa cubes, 33% concentrate; Exp 2: 75% timothy cubes, 25% concentrate). Ytterbium labeled hay and cobalt-ethylenediaminetetraacetic acid were used to estimate digesta mean retention time (MRT), whi

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2

Tucker, Emily C. "Development of novel methods of assessment in oesophageal and gastric function." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/28723/.

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The objective of this thesis was to develop new methodologies to assess upper gastro-intestinal function in health and disease. Several different technologies were studied in a range of upper gastro-intestinal diseases and adapted to try and provide more meaningful insights. The thesis has three main sections. In the first section, High Resolution Oesophageal Manometry (HRM) was used to assess unexplained upper gastro-intestinal symptoms in a group of patients referred to a tertiary centre. 46 patients were diagnosed with rumination syndrome following HRM. A retrospective review was completed

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3

Vitish-Sharma, Parveen. "The effect of Trendelenburg positioning in laparoscopic colorectal surgery on intraocular pressure and cognitive function." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/48966/.

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Trendelenburg positioning is frequently used during laparoscopic surgery particularly when access to the pelvis is required. With improvements in laparoscopic skills, high risk patients and more complex procedures are now frequently being performed laparoscopically. (Improvement, 2016) The aim of this thesis is to investigate the effect of Trendelenburg positioning on intraocular pressure (IOP) and cognitive function. Chapters 2 and 4 look at the effect of Trendelenburg positioning on IOP. Perioperative vision loss occurs rarely but it is a life changing complication. A rise in IOP is a recogn

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4

Fleming, Catherine Mary. "The epidemiology of cirrhosis and abnormal liver function in the general population of the UK." Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/11371/.

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Background Liver disease is a serious problem both in the UK and globally. While the incidence and mortality from several chronic diseases are decreasing, mortality from liver disease is increasing. As well as the medical sequelae for an individual with liver disease, in the UK the increase in chronic liver disease poses particular problems with respect to increasing hospital admissions, mortality and significant costs to the public both in terms of treatment and in loss of productivity. The increase in society of several risk factors for chronic liver disease, notably alcohol intake, obesity

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5

Castells, Domingo Llorenç. "Effect of different fiber sources on the digestive function and development of calves." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/117315.

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Per analitzar l'efecte de la inclusió de fonts de fibra en la dieta dels vedells abans del deslletament sobre el rendiment productiu, comportament, i el desenvolupament i funció del tracte gastrointestinal es van realitzar cinc estudis. En el primer dels estudi es va realitzar una sèrie de proves per tal de trobar les fonts de fibra que poguessin afavorir el creixement i desenvolupament dels vedells. Com a resultat d'aquest estudi, es va trobar que els vedells que rebien un farratge de gramínies, milloraven els paràmetres productius. Cal destacar la palla d'ordi, el fenc de civada i l'ensitjat

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6

Ehrström, Marcus. "Studies on the effect of orexin on upper gastrointestinal function in rats and man /." Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-957-9/.

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7

Yadav, Prashant. "Understanding the Role of Phosphoinositide 3-Kinase and its Function as a Driving Force behind the ER Stress Response in Fibrostenotic Crohn’s Disease-affected Ileal Smooth Muscle Cells." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5511.

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Crohn’s disease (CD) affects about 780,000 people in the United States alone, and it is estimated that 6-15 per 100,000 persons will receive a diagnosis of this disease each year. There currently is no cure for Crohn’s disease, and available medical therapies simply serve to alleviate the inflammation. This does not help treat fibrostenosis that Crohn’s disease patients may develop, which can only be treated surgically. Finding alternatives to treat CD requires an understanding of mechanisms at the biochemical level. In this thesis, we attempted to gain a better understanding of certain pathwa

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8

May, Alexander T. "Identification of Expression and Function of the Glucagon-like Peptide-1 Receptor in Gastrointestinal Smooth Muscle." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4886.

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In response to ingestion of nutrients, enteroendocrine L cells secrete the incretin hormone, glucagon-like peptide-1 (GLP-1), to enhance glucose-dependent insulin release. Therapies related to GLP-1 are approved for type 2 diabetes. The GLP-1 receptor (GLP-1R) is expressed in cells of the gastrointestinal tract and elsewhere. In pancreatic beta cells, GLP-1R are coupled to the Gs/cAMP/PKA pathway. The expression and function of GLP-1R in gastrointestinal smooth muscle are not known. Aim. To test the hypothesis that GLP-1 regulates smooth muscle function by acting on GLP-1R expressed on smooth

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9

Steeb, Corinna-Britta. "Effects of insulin-like growth factor-I (IGF-I) peptides on the growth and function of the gastrointestinal tract in adult and sucking rats /." Title page, abstract and contents only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phs813.pdf.

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10

Winter, Trevor Anthony. "The effect of severe malnutrition, and subsequent re-feeding on digestive function in human subjects, with special reference to gastric acid and pancreatic enzyme secretion, and protein synthesis." Doctoral thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/3486.

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Severe malnutrition may adversely affect digestive function, and result in the difficulties frequently encountered when attempting to re-feef such patients. To investigate the effects of undernutrition, and subsequent re-feeding, on digestive function in human patients, severely malnourished patients were studies before, and after a period of intensive nutritional support.

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11

Kinouchi, Toshi. "Studies on the Regulation of Digestive Functions by Breast Milk Components." Kyoto University, 2000. http://hdl.handle.net/2433/151618.

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12

Pigrau, Pastor Marc. "Molecular mechanisms and effect of acute and psychosocial stress on the intestinal barrier function. Implications on the irritable bowel syndrome." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/665970.

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El estrés psicosocial es uno de los grandes problemas de salud en las sociedades modernas. En condiciones fisiológicas el estrés representa una amenaza para la homeostasis. En respuesta al estrés se genera una respuesta coordinada que implica a los sistemas autonómico, endocrino e inmunitario para mantener la estabilidad del medio. Una sobreexposición al estrés en individuos susceptibles, altera esta respuesta adaptativa pudiendo dar lugar al desarrollo de enfermedades. Uno de los órganos más vulnerables al estrés es el tracto gastrointestinal (GI), ya que las enfermedades más comunes del trac

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13

Risdon, Sydney. "Consommation d’édulcorants intenses non-caloriques et santé cardiométabolique : effets sur le contrôle glycémique et la fonction vasculaire chez le rongeur Sucralose and cardiometabolic health: current understandingfrom receptorsto clinical investigations Artificial sweeteners impair endothelial vascular reactivity: Preliminary results in rodents Is fasting blood glucose a reliable parameter to investigate the effect of non-nutritive sweeteners on glucose metabolism? Digestive n-6 Lipid Oxidation, a Key Trigger of Vascular Dysfunction and Atherosclerosis in the Western Diet: Protective Effects of Apple Polyphenols." Thesis, Avignon, 2021. http://www.theses.fr/2021AVIG0719.

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Les édulcorants ont été progressivement introduits dans l'alimentation humaine dans le but, de réduire l'apport calorique mais aussi de limiter les répercussions sur les niveaux de glycémie, tout en préservant le gout sucré, élément essentiel du plaisir gustatif. Plusieurs travaux de recherche ont néanmoins suggéré, contrairement aux intentions premières, que cette consommation d’édulcorants quotidienne pouvait participer à augmenter le risque de devenir obèse ou diabétique mais aussi le risque de mortalité cardiovasculaire. Dans ce contexte, l’objectif de ce travail de thèse a été d’identifie

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14

Popeliuk, N. O. "Peculiarities of treatment of respiratory infections in children with functional digestive disorders." Thesis, БДМУ, 2021. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/19155.

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Aresta-Dasilva, Stephanie K. "Structure-function study on pepsin and comparative digestion of albumin and gliadins." Thesis, Boston University, 2012. https://hdl.handle.net/2144/12272.

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Thesis (M.A.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>Background: Although pepsin's crystal structure has been analyzed extensively, enzymatic components and sequential characteristics that make pepsin so functional and resilient in the acidity of the stomach, re

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16

Huamán, Ríos José Wálter. "Relación entre dieta, función y síntomas digestivos." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670576.

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Els trastorns funcionals digestius són els trastorns més freqüents en gastroenterologia. Es tracta d'un grup de trastorns de la interacció cervell-intestí, que es classifiquen d'acord amb els símptomes predominants, els més coneguts són la dispèpsia funcional, la síndrome d'intestí irritable, el restrenyiment i els trastorns de la defecació. Se sap que hi ha una relació entre la dieta, funció i els símptomes digestius. No obstant això, la fisiopatologia dels trastorns funcionals digestius no està d'el tot aclarida. En aquesta tesi doctoral plantegem la següent hipòtesi general: el contingut in

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17

Malhotra, Saimon. "Molecular biological characterisation of the functional microbial communities in anaerobic digesters." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272792.

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18

Le, Maux Solène. "β-lactoglobulin/linoleate complexes : binding properties and biological functions". Rennes, Agrocampus Ouest, 2013. http://www.theses.fr/2013NSARB238.

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Les interactions entre nutriments dans les produits alimentaires peuvent affecter leur bioaccessibilité. La β-lactoglobuline (βlg), protéine majeure du lactosérum, est connue pour lier des ligands hydrophobes tels que des acides gras (AG). Très sensible aux conditions industrielles, la βlg est souvent sous formes non natives dans les aliments transformés. Notre hypothèse est que les changements structuraux au niveau de la protéine modifient l'affinité pour les AG et par conséquent les propriétés biologiques des complexes AG/protéine. L'objectif était d'étudier l'interaction de la βlg bovine so

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19

Fuzita, Felipe Jun. "Molecular physiology of digestion in arachnida: functional and comparative-evolutionary approaches." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/87/87131/tde-08122014-100929/.

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Spiders and scorpions are efficient predators arachnid (PA) consuming preys larger than themselves. Few studies reported, molecularly, the digestion in PA. This work describes a biochemical, transcriptomic and proteomic analysis of the midgut and midgut glands (MMG) and digestive juice (DJ) from Nephilengys cruentata and Tityus serrulatus MMG. Cathepsin L, B, D and F, legumain, trypsin, astacin, carbohydrases and lipases were identified by these approaches. Peptide isomerase and ctenitoxins, which are venom proteins were identified, showing a correlation among digestive and venom enzymes. Summ

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20

Rodríguez, Urrutia Amanda. "El rol de la incongruencia en la evaluación de pacientes hospitalizados con trastornos gastrointestinales." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/458640.

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Introducción: Es conocida la elevada psicopatología asociada a los diferentes subtipos de pacientes con trastornos gastrointestinales funcionales (TGF) y la dificultad para el gastroenterólogo para detectarla y manejarla, pudiendo generar diagnósticos digestivos tardíos y en ocasiones erróneos. Los trastornos de la motilidad gastrointestinal (TMG) han sido menos estudiados desde ésta perspectiva. Tener en cuenta la experiencia subjetiva del paciente en relación a su enfermedad en comparación con la evaluación del gastroenterólogo y el nivel de incongruencia entre los dos puede ser de utilidad

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21

Labbe-Watson, Jenna G. "Ayurvedic and Bionian Theories of Thinking: Mental Digestion and the Truth Instinct." Antioch University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1594069857416562.

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22

Scheffler, Olivia. "Functional Characterization of a Novel Disaccharide Membrane Transporter in the Digestive Tract of the American Lobster, Homarus americanus." UNF Digital Commons, 2016. http://digitalcommons.unf.edu/etd/643.

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In animals, the accepted model of carbohydrate digestion and absorption involves reduction of disaccharides into the simple sugars glucose, fructose and galactose. Previous studies have shown the presence of disaccharides maltose and trehalose in the blood of several crab species, the crayfish and the American lobster. In 2011, a gene for a distinct disaccharide sucrose transporter (SCRT) was first found in Drosophila melanogaster and characterized using a yeast expression system. The purpose of the current study was to identify and characterize a putative disaccharide transporter analog in cr

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23

Dammannagoda, Acharige Lalith Keerthiratne. "An investigation of functional diversity of endogenous cellulase and expression of other digestive enzyme genes in freshwater crayfish (Cherax) species." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/75462/2/Lalith_Dammannagoda_Acharige_Thesis.pdf.

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The project evaluated potential of soluble cellulose as a cheap feed ingredient for major farmed Australian freshwater crayfish species testing their growth performance, digestive enzyme activity and digestive enzyme gene expression patterns. Test animals showed an innate capacity to utilise a range of carbohydrate sources including complex structural polysaccharides. Results suggest that more plant-derived ingredient can be incorporated in formulated low-cost feeds for the culture industry.

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24

Pineda, Vadillo Carlos. "Développement de produits des laitiers et ovoproduits enrichis en bioactifs contre le syndrome métabolique : effet de la matrice alimentaire sur la bioaccessiblité et la biodisponibilité des polyphénols et de l'acide docosahexaénoïque." Thesis, Rennes, Agrocampus Ouest, 2016. http://www.theses.fr/2016NSARB278/document.

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Le syndrome métabolique (MS), une association des plus dangereux facteurs de risque pour les maladies cardiovasculaires et le diabète de type 2, est devenu l'un des principaux défis cliniques et de santé publique dans le monde. Un nombre croissant d’évidences s’est accumulé au cours de la dernière décennie, démontrant l'efficacité de certains composés bioactifs alimentaires pour le traitement et la prévention du MS. Néanmoins, la plupart des études d'intervention administre les composés bioactifs sous forme de composés purs, sans considérer que l'interaction entre les bioactifs ajoutés et l'en

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25

Dymond, Jo. "The functional anatomy of the digestive system of the marine wood-boring isopod Limnoria quadripunctata, with evidence of endogenous cellulase production." Thesis, University of Portsmouth, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.536550.

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Wood-boring species of the isopod family Limnoriidae cause damage to timber in the marine environment. Limnoria quadripunctata is a wood-borer with a widespread distribution in temperate waters. Key points of relevant literature are reviewed. Histological techniques, coupled with scanning electron microscopy, were used to examine the structure of the oesophagus, proventriculus and hindgut, which together comprise the alimentary canal. The midgut diverticula, which are believed to be the site of both secretion and absorption, were examined using the same techniques. The proventriculus of L. qua

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Likely, Rasheda S. "Functional Characterization of a Putative Disaccharide Membrane Transporter in Crustacean Intestine." UNF Digital Commons, 2014. http://digitalcommons.unf.edu/etd/493.

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The mechanisms of transepithelial absorption of dietary sucrose in the American lobster, Homarus americanus, were investigated in this study to determine whether sugars can be transported across an animal gut intact or as monosaccharides following hydrolysis. Lobster intestine was isolated and mounted in a perfusion chamber to characterize the mechanisms of mucosal to serosal (MS) 14C -sucrose transport across the intestine MS fluxes were measured by adding varying concentrations of 14C-sucrose to the perfusate which resulted in a hyperbolic curve following Michaelis-Menten kinetics. The kinet

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Tomonaga, Nami. "Studies on marine sphingophosphonolipids as new food ingredients." Kyoto University, 2019. http://hdl.handle.net/2433/242681.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第21804号<br>農博第2317号<br>新制||農||1065(附属図書館)<br>学位論文||H31||N5176(農学部図書室)<br>京都大学大学院農学研究科応用生物科学専攻<br>(主査)教授菅原達也, 教授佐藤健司, 教授松井徹<br>学位規則第4条第1項該当

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Bussalleu, Vargas Quintanilla Vanessa, Cabrera José Julián Estabridis, Villanueva Sandra Judith Levano, and Olcese Jose Alberto Osterling. "Hibiscus." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653373.

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El presente trabajo de investigación trata de la producción mediante servicio de maquila y la comercialización de tés de 45 gr. con la marca Hibiscus que es una mezcla de hojas deshidratadas de planta aromáticas, medicinales que mantienen sus nutrientes y propiedades funcionales, tales como: digestivo, relajante y antioxidante como una solución para mejorar la salud y bienestar del consumidor. Además, para simplificar el proceso de preparación del filtrado del té, la presentación del producto trae un infusor de té para taza. En este sentido, para posicionar el producto en el consumidor, se

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McGroarty, James Roy. "Comparative morphology and functional anatomy of the digestive tract of the copepods Tigriopus californicus and Calanus plumchrus : a light and electron microscope study." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24853.

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A study of the digestive tract of the copepods Tigriopus californicus and Calanus plumchrus was carried out using techniques of light and electron microscopy. In Tigriopus californicus, the foregut contains a curved cuticle lined esophagus which extends from the ventral mouth to the junction of the anterior midgut and midgut caecum. The noncuticulized portion of the digestive tract consists of: 1. A single spherical midgut caecum located anteriorly, 2. An anterior midgut, 3. A posterior midgut. There are cuticulized anterior and posterior hindgut regions ending in a dorsal anus. In Calanus pl

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Jerschabek, Laetz Elise Marie [Verfasser]. "Examining the Retention and Digestion of Functional Kleptoplasts in Solar-Powered Sea Slugs / Elise Marie Jerschabek Laetz." Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1188732684/34.

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Jerschabek, Laetz Elise [Verfasser]. "Examining the Retention and Digestion of Functional Kleptoplasts in Solar-Powered Sea Slugs / Elise Marie Jerschabek Laetz." Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1188732684/34.

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32

Comtet-Marre, Sophie. "Evolution structurale et fonctionnelle des communautés microbiennes digestives sous l'influence de facteurs biotiques et abiotiques. Développement d'une biopuce ADN ciblant les gènes impliqués dans la dégradation des glucides complexes alimentaires." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22467/document.

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La dégradation des fibres alimentaires est une fonction essentielle des écosystèmes digestifs microbiens. Chez le ruminant, elle est assurée par des bactéries, champignons et protozoaires capables de produire de nombreuses enzymes nécessaires à l’hydrolyse des polysaccharides de paroi végétale. Parmi les facteurs susceptibles d’influencer l’efficacité de dégradation des fibres, qui est une composante importante de la productivité et de la santé animales, des additifs tels que des levures probiotiques apparaissent comme un levier intéressant. Afin d’approfondir les connaissances sur les facteur

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Crole, Martina Rachel. "Comparative morphology and functional significance of mechanical and sensory structures in the upper digestive tract of the ostrich (Struthio camelus) and emu (Dromaius novaehollandiae)." Thesis, University of Pretoria, 2013. http://hdl.handle.net/2263/40274.

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This study describes, on a comparative basis, the morphology of mechanical (the linguo-laryngeal apparatus) and sensory (Herbst corpuscles and taste buds) specialisations in the upper digestive tract (bill and oropharynx) of the ostrich and emu, with a view to a better understanding of the functional significance of these structures. The ostrich and emu are commercial entities that constitute important niche industries and are farmed intensively throughout South Africa. A lack of information on the mechanical and sensory specialisations of the upper digestive tract in these two birds hampers a

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Crawford, Allison Clare. "Evolution and function of cellulase genes in Australian freshwater crayfish." Thesis, Queensland University of Technology, 2006. https://eprints.qut.edu.au/16274/1/Allison_Crawford_Thesis.pdf.

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The most abundant organic compound produced by plants is cellulose, however it has long been accepted that animals do not secrete the hydrolytic enzymes required for its degradation, but rely instead on cellulases produced by symbiotic microbes. The recent discovery of an endogenous cDNA transcript encoding a putative GHF9 endoglucanase in the parastacid crayfish Cherax quadricarinatus (Byrne et al., 1999) suggests that similar cellulase genes may have been inherited by a range of crustacean taxa. In this study, the evolutionary history of the C. quadricarinatus endoglucanase gene and the pr

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Crawford, Allison Clare. "Evolution and function of cellulase genes in Australian freshwater crayfish." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16274/.

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The most abundant organic compound produced by plants is cellulose, however it has long been accepted that animals do not secrete the hydrolytic enzymes required for its degradation, but rely instead on cellulases produced by symbiotic microbes. The recent discovery of an endogenous cDNA transcript encoding a putative GHF9 endoglucanase in the parastacid crayfish Cherax quadricarinatus (Byrne et al., 1999) suggests that similar cellulase genes may have been inherited by a range of crustacean taxa. In this study, the evolutionary history of the C. quadricarinatus endoglucanase gene and the pr

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Li, Siquan. "Pulsed electric field processing of functional foods." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1054144961.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 207 p.; also includes graphics (some col.) Includes bibliographical references (p. 182-193). Available online via OhioLINK's ETD Center

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Smith, Jordan L. "Reversing Cancer Cell Fate: Driving Therapeutic Differentiation of Hepatoblastoma to Functional Hepatocyte-Like Cells." eScholarship@UMMS, 2020. https://escholarship.umassmed.edu/gsbs_diss/1067.

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Background & Aims: Despite advances in surgical care and chemotherapeutic regimens, the five-year survival rate for Stage IV Hepatoblastoma (HB), the predominant pediatric liver tumor, remains at 27%. YAP1 and β-Catenin co-activation occurs in 80% of children’s HB; however, a lack of conditional genetic models precludes exploration of tumor maintenance and therapeutic targets. Thus, the clinical need for a targeted therapy remains unmet. Given the predominance of YAP1 and β-catenin activation in children’s tumors, I sought to evaluate YAP1 as a therapeutic target in HB. Approach & Results: Her

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Mat, Damien. "Cinétiques d’hydrolyse des protéines et des lipides lors de digestions in vitro d’aliments modèles : influence des paramètres de structure des matrices." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLA007.

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L’aliment est une source structurée de nutriments. Les différents éléments qui le composent sont arrangés et associés à plusieurs échelles et lui confèrent des propriétés organoleptiques et rhéologiques. Cette structure va être déconstruite par les différents étages de l’appareil digestif et prise en charge par l’organisme et son microbiote. La réponse qualitative et cinétique du système digestif à une structure particulière doit donc être prise en compte pour compléter notre compréhension des attributs nutritionnels de l’aliment et aller vers des formulations à visée de bien-être et de santé.

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Mkaouar, Héla. "Rôle des serpines, inhibiteurs de protéases à serine, du microbiote digestif humain dans les maladies inflammatoires de l'intestin." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS108.

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Les inhibiteurs des protéases à sérine (Serpins) constituent une classe d'enzymes très peu étudiée chez les bactéries. Dans ce travail de thèse nous nous sommes intéressés à l'étude des serpins provenant du microbiote intestinal et l'investigation de leur potentiel anti-inflammatoire pour le traitement des maladies inflammatoires chroniques de l'intestin (MICI) chez l'homme. Pour cela nous avons identifié les serpins provenant du microbiote intestinal humain et analysé leur diversité ainsi que leur distribution entre les individus malades et sains. Ces données nous ont permis d'isoler les serp

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Dobrijevic, Dragana. "Functional analysis of the predicted surface proteome of Gram-positive bacteria from the human gastrointestinal tract. A high-throughput approach to identification of immune modulators." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112182.

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Il est maintenant bien établi que le microbiote du tractus digestif humain joue un rôle important dans la santé humaine. Pourtant, nous commençons à peine à comprendre les mécanismes moléculaires par lesquels les bactéries agissent sur les cellules hôtes, des connaissances qui pourraient fournir des nouvelles orientations dans le traitement et la prévention de maladies. Cette dernière décennie a vu un développement rapide des études du microbiote intestinal, et à présent des quantités importantes de données métagénomiques ainsi que des centaines de séquences génomiques de bactéries commensales

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Barriga, de Vicente Francisco Martín 1983. "Identification and functional analysis of intestinal stem cell genes in homeostasis and cancer." Doctoral thesis, Universitat Pompeu Fabra, 2013. http://hdl.handle.net/10803/292365.

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The first chapter of this thesis describes the study of intestinal stem cells (ISCs) and their relationship to colon cancer. We describe the transcriptional landscape of intestinal epithelial populations through the use of the surface marker EphB2 which allowed us to build an ISC-specific gene signature. Elevated levels of this signature characterize CRC patients with high risk of disease relapse after therapy. Furthermore, our studies led us to discover that colon cancers are organized according to a hierarchical structure similar to that present in the normal colonic epithelium. EphB2-

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Pioche, Mathieu. "Optimisation de la technique de dissection sous muqueuse à l’aide d’un bistouri à jet d’eau haute-pression pulsée pour le traitement endoscopique des tumeurs superficielles du tube digestif." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10166/document.

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Dans cette thèse, nous avons travaillé sur les différents versants de la technique de dissection sous-muqueuse et les problèmes que pose ce geste quasi chirurgical dans des unités d'endoscopie initialement médicales. Tout d'abord, nous avons travaillé sur la formation à la technique en développant un modèle d'apprentissage sur colon de bovin plus adapté à la situation européenne où les lésions colo-rectales sont les plus fréquentes. Ce modèle de rectum de bovin, simple à trouver et à préparer permet une formation dans des conditions plus proches de la paroi colique humaine que celles offertes

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Pioche, Mathieu. "Optimisation de la technique de dissection sous muqueuse à l’aide d’un bistouri à jet d’eau haute-pression pulsée pour le traitement endoscopique des tumeurs superficielles du tube digestif." Electronic Thesis or Diss., Lyon 1, 2015. http://n2t.net/ark:/47881/m6cr5rtg.

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Dans cette thèse, nous avons travaillé sur les différents versants de la technique de dissection sous-muqueuse et les problèmes que pose ce geste quasi chirurgical dans des unités d'endoscopie initialement médicales. Tout d'abord, nous avons travaillé sur la formation à la technique en développant un modèle d'apprentissage sur colon de bovin plus adapté à la situation européenne où les lésions colo-rectales sont les plus fréquentes. Ce modèle de rectum de bovin, simple à trouver et à préparer permet une formation dans des conditions plus proches de la paroi colique humaine que celles offertes

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44

Perréard, Marion. "Dévelοppement, caractérisatiοn et utilisatiοn de mοdèles d'οrganοïdes issus de tumeurs VADS pοur la prédictiοn de la répοnse aux traitements et le dévelοppement de stratégies innοvantes". Electronic Thesis or Diss., Normandie, 2025. http://www.theses.fr/2025NORMC405.

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Les carcinomes épidermoïdes (CE) des voies aéro-digestives supérieures (VADS) sont le 5ème cancer en France, et son pronostic est sombre avec une survie à 5 ans tous stades confondus de l’ordre de 40%. Les stratégies thérapeutiques reposent sur des associations des traitements (chirurgie, radiothérapie, chimiothérapie à base de platine) avec une lourde toxicité pour les patients. La résistance aux traitements est également une problématique majeure. Ces éléments soulignent l’importance d’une médecine personnalisée pour améliorer la prise en charge des patients atteints d’un CE des VADS et augm

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45

Fancello, Laura. "A viral metagenomic approach to study taxonomic and functional diversity of viral communities from the environment to humans." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM5046/document.

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Les virus sont les entités biologiques les plus abondantes et diversifiées sur Terre et leur diversité est encore très peu connue. Récemment, la métagénomique virale a facilité l'exploration de cette diversité. Néanmoins, la plupart des viromes environnementaux générés à ce jour proviennent de régions tempérées et la plupart des viromes humains proviennent d’échantillons de selles, sang ou de prélèvements oro-naso-pharyngés. L'objectif de mon travail de thèse était d’apporter de nouvelles connaissances sur les communautés virales d’environnements et d’échantillons humains les moins étudiés en

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Nordell, Erik. "Effekter av Zeoliter i Biogasproduktion." Thesis, Linköping University, Biotechnology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16761.

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<p>Biogas är benämningen för metangas (CH<sub>4</sub>) som är producerad via anaerob (syrefri) rötning av biologiskt material. I Linköping finns en av Sveriges största biogasanläggningar. Anläggningen drivs av Svensk Biogas AB som ägs av Tekniska Verken i Linköping AB (publ.). I anläggningen rötas stora mängder proteinrikt substrat vilket leder till höga halter av ammoniak (NH<sub>3</sub>) och ammonium (NH<sub>4</sub><sup>+</sup>) i rötkammaren. Ammoniak (NH<sub>3</sub>) är toxiskt för de metanbildare som i en välmående process står för den största delen av metangasproduktionen. Höga halter av

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Voinot, Florian. "Axe cerveau-intestin et contrôle de la prise alimentaire : exemple d'altérations chez un modèle animal de schizophrénie." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00790379.

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L'axe cerveau-intestin désigne l'interaction bidirectionnelle entre le cerveau et le tube digestif. Bien que la leptine, hormone produite par le tissu adipeux, participe à la régulation de cet axe, son mode d'action dans le système nerveux entérique a été peu étudié. A l'heure actuelle, une relation étroite entre une perturbation de l'axe cerveau-intestin et la schizophrénie est supposée. Par conséquent, les objectifs de ce travail étaient d'évaluer 1) les effets ex vivo de la leptine dans la neurotransmission entérique chez le rat et 2) les altérations périphériques dans un modèle neurodévelo

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CHEN, CHUN-YI, and 陳俊伊. "Exploring the Effects of Fungal Lectin on the Function of Digestive System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/n2w7ss.

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Kehoe, Sylvia I. "Colostrum components and their impact on digestive function and growth of dairy calves." 2006. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1678/index.html.

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O'Brien, MacDonald Kelly. "Development of foraging and digestive function in Atlantic cod (Gadus morhua) larvae in response to diet /." 2004.

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