Дисертації з теми "Allergen microarrays"
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Martinroche, Guillaume. "Quantification et caractérisation des maladies auto-immunes et allergiques à l'aide de méthodes d'apprentissage profond." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0154.
Повний текст джерелаDiagnostic tools based on artificial intelligence (AI) and capable of integrating several types of data, will be crucial in the next coming years in helping practitioners provide more personalized, precision medicine for patients. Autoimmune and allergic diseases are perfect examples of complex, multi-parametric diagnostics that could benefit from such tools. Antinuclear antibodies (ANA) on human epithelial cells (HEp-2) are important biomarkers for the screening and diagnosis of autoimmune diseases. For harmonization of biological practices and clinical management, automatic reading and classification of ANA immunofluorescence patterns for HEp-2 images according to the nomenclature recommended by the International Consensus on Antinuclear Antibody Patterns (ICAP) seems to be a growing requirement. In our study, an automatic classification system for Indirect Immunofluorescence (IIF) patterns of HEp-2 cells images was developed using a supervised learning methodology, based on a complete collection of HEp-2 cell images from Bordeaux University Hospital labelled accordingly to ICAP recommendations and local practices. The system consists of a classifier for nucleus patterns only (16 patterns and allowing recognition of up to two aspects per image) and a second classifier for cytoplasm aspects only. With this contribution to the automation of ANA in medical biology laboratories, it will enable reflex quantitative tests targeted on a few autoantibodies, ultimately facilitating efficient and accurate diagnosis of autoimmune diseases. Allergen microarrays, enable the simultaneous detection of up to 300 specific IgE antibodies and are part of a bottom-up diagnostic approach in which, on the basis of the broadest possible analysis, we then seek to determine which allergen(s) is (are) likely to explain the patient's symptoms. However, the mass of data produced by this single analysis is beyond the analytical capacity of the average user and the large number of results obtained simultaneously can mask those that are truly clinically relevant. A database of 4271 patients (Société Française d'Allergologie) was created, including allergen microarrays data and twenty-five demographic and clinical data. This database allowed the development of the first models capable of predicting patients' allergic profiles thanks to an international data challenge. The best F1-scores were around 80%. A more comprehensive tool adapted to daily practice is currently under development. Based essentially on microarrays data and a very few clinical and demographic data, it will be able to provide clinicians with a probability of molecular allergy by protein family, thus limiting diagnostic delays and the need for oral provocation tests. Diagnostic tools using so-called AI technologies are helping to improve the efficiency of current techniques, leveraging locks for repetitive, low-value-added tasks. These tools are generally poorly perceived by practitioners, who feel that they are losing their expertise, and even that they are being replaced by algorithms. This impression is particularly strong in Medical Biology, where this improvement directly affects the function of the Medical Biologist. In an attempt to better understand this, we took a closer look at the relationship of trust, if there can be one, between the practitioner and the diagnostic tool. The concepts of reliability and veracity were discussed. Thanks to a survey of medical biologists working on the analysis of aspects of HEp-2 cells, a certain reticence can be highlighted, with reasons linked to performance scores and unfamiliarity with the systems. The deployment and commitment to similar strategies in the field of biological hematology shows real interest once performance has been established. The development of two diagnostic tools for autoimmune and allergic diseases is laying the foundations for improved results and lasting integration into a more personalized, precision medicine
Ardizzoni, Andrea. "Allergome microarray for the detection of total repertoire of allergen-specific IgE human serum." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427750.
Повний текст джерелаHamed, Aljali. "Development of IgE microarray assays for classification of allergic individuals." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/37431/.
Повний текст джерелаErkers, Julia. "Towards automatic smartphone analysis for point-of-care microarray assays." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-280663.
Повний текст джерелаBosco, Anthony. "Identification of novel genes associated with allergen-driven T cell activation in human atopics." University of Western Australia. School of Paediatrics and Child Health, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0023.
Повний текст джерелаWang, Xiaowei. "Development of a detection system towards a basophil-microarray for the diagnosis of allergies." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14187/.
Повний текст джерелаMallmann, Stefanie [Verfasser], and Ralf S. [Akademischer Betreuer] Müller. "Untersuchung der Testreaktionen in Allergen-Microarray und Intradermaltest von Hunden mit atopischer Dermatitis unter Berücksichtigung der allergisch bedingten Juckreizsymptomatik / Stefanie Mallmann ; Betreuer: Ralf S. Müller." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2017. http://d-nb.info/1216827230/34.
Повний текст джерелаPascal, i. Capdevila Mariona. "Allergenic protein and epitope recognition in food allergy: a new perspective for the molecular and clinical characterization of shellfish and lipid transfer protein allergy / Reconeixement de proteïnes i epítops al•lergènics en al•lèrgia alimentaria: una nova perspectiva per a la caracterització clínica i molecular de l’al•lèrgia al marisc i a les proteïnes de transferència de lípids." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/84070.
Повний текст джерелаActualment els mètodes diagnòstics de l'al•lèrgia alimentària no són capaços de predir la reactivitat clínica dels pacients sensibilitzats (els que tenen IgE específica davant un determinat al•lergen). Tradicionalment les proves diagnòstiques de l'al•lèrgia han utilitzat extractes complets de fonts al•lergèniques que contenen múltiples molècules, algunes al•lergèniques i altres no. Això limita enormement la precisió en el diagnòstic i la possibilitat d'identificar reaccions al•lèrgiques a diferents aliments per l'existència de reactivitats creuades. Gràcies a la caracterització dels al•lèrgens a nivell molecular, s'ha desenvolupat el concepte del Diagnòstic Basat en Components que es basa en el raonament de detectar la presència d'IgE específica per a la proteïna realment responsable de la resposta al•lèrgica i no per una mescla de molècules. Addicionalment, l'estudi del reconeixement IgE i IgG4 a nivell d'epítops amb microarrays de pèptids sintètics pot ser una eina útil per al diagnòstic, pronòstic i desenvolupament d'una teràpia per l'al•lèrgia alimentària. La hipòtesi d'aquesta tesi és que aquestes noves metodologies poden millorar el diagnòstic de l'al•lèrgia al marisc i a les proteïnes de transferència de lípids (LTP), presents en múltiples aliments vegetals. L'objectiu és doncs caracteritzar clínicament i a nivell molecular aquests dos tipus d'al lèrgies alimentàries, utilitzant aquestes noves metodologies. Respecte a l'al•lèrgia al marisc, els al lèrgens tropomiosina, proteïna sarcoplàsmica d'unió de calci i la cadena lleugera de miosina s'associen amb la reactivitat clínica a la gamba. D'altra banda, els al•lèrgens arginina quinasa i hemocianina estarien més implicats en fenòmens de reactivitat creuada amb altres artròpodes. Addicionalment, amb el microarray de pèptids sintètics s'ha pogut identificar un reconeixement diferencial d'epítops IgE i IgG4 entre pacients al•lèrgics i tolerants. Respecte a l'al•lèrgia a les LTP, els pacients pateixen reaccions amb un ampli ventall d'aliments vegetals, sent el préssec el més freqüent, amb una gran diversitat de símptomes clínics, que poden atribuir-se a al•lèrgens de diferents famílies. El diagnòstic basat en components en el format d'un microarray que inclou proteïnes al•lergèniques de diferents famílies és útil per al diagnòstic d'aquests pacients, ja que permet identificar que les úniques proteïnes responsables els símptomes clínics són les LTP, encara que els símptomes siguin molt variats i en algunes ocasions s'assemblin més als provocats per altres al•lèrgens com les profilines o els homòlegs de Bet v 1. En aquests pacients són freqüents els casos d'anafilàxia en què està involucrat un cofactor, com els antiinflamatoris no esteroïdals. La presència del fàrmac amb l'al•lergen alimentari desencadena reaccions al•lèrgiques que sense el fàrmac no es donarien o serien de menor severitat. Hem desenvolupat un model preliminar in vitro basat en el test d'activació de basòfils que ens ha permès observar in vitro l'efecte observat in vivo. En conclusió, el diagnòstic basat en components i el mapatge d'epítops són eines útils per a la caracterització de l'al•lèrgia alimentària al marisc i a les proteïnes LTP, i s'han de considerar per millorar l'eficiència del diagnòstic d'aquests dos tipus d'al•lèrgies alimentàries.
ARASI, STEFANIA. "Reliable mite-specific microarray for testing IgE antibodies in nasal secretions." Doctoral thesis, 2017. http://hdl.handle.net/11570/3121575.
Повний текст джерелаPereira, Cátia Liliana Morais. "Characterization of allergens from several tree nuts and their role in plant food allergy." Master's thesis, 2013. http://hdl.handle.net/10451/11516.
Повний текст джерелаFood allergies are a common issue in western countries. In the last decade, these diseases has increased significantly, and nowadays it is estimated that affects 2-8% of the population. Within the food allergies, plant food is the most frequent in adult population and the most part of the plant food allergens belong to protein families with defense or storage functions. Among plant food allergies there is a special interest in tree nut allergy. In the course of history, nuts have been part of the diet around the world. Tree nuts have a high nutritional value and they are very important in the human diet. However, in the developed world, the allergic reactions caused by tree nuts represent one of the first causes of food allergies in children and the first in adults. Understanding the mechanism by which a harmless protein to the organism is capable of inducing an allergic response is the basis to prevent and treat this type of disease. Until now, in food allergy, the only possible treatment is avoiding the consumption of the culprit food. Although, the existence of cross-reactivity between allergens and the specific sensitization profiles of each patient, makes it difficult to know which foods are related and which ones the patient should avoid. In order to develop safe and effective immunotherapy, it is necessary to characterize the allergens involved both at molecular and immunological level. The major allergens described in tree nuts are 7S vicilins, 11S legumins, 2S albumins, lipid transfer proteins (LTPs) and thaumatin-like proteins (TLPs). In this thesis, the allergenic molecular basis of these proteins was studied in order to try to understand the possible mechanisms that are mediating sensitization and cross-reactivity and the prevalence of these proteins in a Spanish population, with the use of protein microarrays.
As alergias alimentares são um problema comum nos países ocidentais. Na última década, estas doenças têm aumentado significativamente e actualmente é estimado que afectem 2-8% da população. Nas alergias alimentares, a alergia a alimentos vegetais é a mais frequente na população adulta e a maioria dos alergenos de alimentos vegetais pertencem a famílias de proteínas com funções de defesa e armazenamento. Entre as alergias a alimentos vegetais, há um interesse especial na alergia a frutos secos. No decurso da história, os frutos secos têm feito parte da dieta em todo o mundo. Os frutos secos têm um elevado valor nutricional e são muito importantes na dieta humana. Contudo, no mundo desenvolvido, as reacções alérgicas causadas pelos frutos secos, representam uma das primeiras causas de alergia alimentar em crianças e a primeira em adultos. Conhecer o mecanismo pelo qual uma proteína inofensiva ao organismo é capaz de induzir uma resposta alérgica, é a base para prevenir e tratar este tipo de doença. Até agora, na alergia alimentar, o único tratamento possível é evitar o consumo do alimento culpado pela alergia. Todavia, a existência de reactividade-cruzada entre alergenos e os perfis especifícos de sensibilização dos patientes, torna difícil saber que alimentos estão relacionados e quais os alimentos que o paciente deve evitar. De modo a desenvolver imunoterapia segura e eficaz é necessário caracterizar os alergenos envolvidos, tanto a nível molecular como a nível imunológico. Os alergenos maioritários descritos nos frutos secos são vicilinas 7S, leguminas 11S, albuminas 2S, proteínas de transferência de lípidos (LTPs) e proteínas similares a taumatinas (TLPs). Nesta tese, a base molecular alergénica destas proteínas foi estudada de modo a perceber os possíveis mecanismos que medeiam a sensibilização e a reactividade-cruzada e a prevalência destas proteínas numa população Espanhola, com a utilização de microarrays de proteínas
Chou, Shan-Ying, and 周珊霙. "An integrated microfluidic system for automating multiplex allergy microarrays." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/jhbrg6.
Повний текст джерела國立清華大學
生物醫學工程研究所
105
This study reports an integrated automatic microfluidic system for detection of allergy in a microarray platform. Nowadays, allergy is very common in the world. It is a response of the human immune system to antigens in the surroundings. However, detection for allergy requires tedious manual operation, well-trained technicians and a relatively labor-intensive process. In the study, an integrated microfluidic system has been developed by combining several microfluidic techniques and microarray chips. Our previous experiments showed that a microfluidic system for allergy-diagnosis on microarray chips could be realized. It was demonstrated that after mass fabrication, the use of optimized conditions could obtain the similar fluorescence signals to the ones from manual processes and it only took only 20 minutes for the single reaction zone. In order to cut down costs and simplify the process, a new microfluidic system capable of simultaneous multiplex allergy-diagnosis was developed in this work. Experimental results demonstrated that multiplex reaction zones showed similar signals. Not only could it obtain the signals comparable to the on-bench experiments, but it also could increase the applicability of the integrated microfluidic system for automating multiplex detection on allergy microarray chips.
Tumes, Damon John. "Factors associated with mouse strain-dependent susceptibility to pathology in models of allergic asthma." Thesis, 2009. http://hdl.handle.net/2440/56533.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Molecular and Biomedical Science, 2009
Tumes, Damon John. "Factors associated with mouse strain-dependent susceptibility to pathology in models of allergic asthma." 2009. http://hdl.handle.net/2440/56533.
Повний текст джерелаhttp://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1366239
Thesis (Ph.D.) -- University of Adelaide, School of Molecular and Biomedical Science, 2009
Jin, Saihong. "Specific IgE profiling of 52 allergens in sensitized individuals using a new protein microarray technology." 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014914880&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Повний текст джерелаPaul, Jasmin. "A New Reclassification Method for Highly Uncertain Microarray Data in Allergy Gene Prediction." Thesis, 2012. http://hdl.handle.net/10214/3486.
Повний текст джерелаShiue, Horng-Sheng, and 薛宏昇. "DNA Microarray Analysis of the Effect in Patients Treated with Acupuncture for Allergic Rhinitis." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/36965802441145142529.
Повний текст джерела臺北醫學大學
醫學科學研究所
97
Allergic rhinitis affects approximately 30% of adults and up to 40% of children in industrialized societies. Medicines available for relief of allergic rhinitis symptoms include antihistamines, decongestants, leukotriene inhibitors, topical hormones and corticosteroids. However, the negative side effects of anti-allergic medicines cause many allergic rhinitis patients to choose traditional Chinese medical treatments - such as taking Chinese herbs or treatment with acupuncture. Acupuncture therapy corrects the equilibrium deviation using the bi-directional regulative actions in treating syndromes by inserting needles into acupoints. We assessed the therapeutic effect of acupuncture in perennial allergic rhinitis patients. We studied the clinical outcomes and gene expression profiles of allergic rhinitis patients who were treated with acupuncture. The patients were treated with acupuncture eight times over a four week period and peripheral blood of these patients was collected at each visit for analysis of gene expression. Eighteen phadiatopTM positive allergic rhinitis patients were analysised by cDNA microarray, and 13 phadiatopTM positive allergic rhinitis patients with 8 phadiatopTM negative rhinitis patients were analysised by Affymetrix human U133A chips. To estimate the therapeutic effect of acupuncture objectively, patients completed the rhinoconjunctivitis quality of life questionnaire (RQLQ) before and after acupuncture therapy. Based upon patient response to the RQLQ in cDNA microarray study, acupuncture therapy significantly improved allergic rhinitis symptoms, including nasal symptoms, non-hay fever symptoms, sleep and practical problems(daily activities). Additionally, expression of interleukin 1 receptorα(IL1R1) in peripheral blood was significantly decreased at 2 hours, 24 hours and 4 weeks after acupuncture treatment in these patients. In Affymetrix human U133A chips study, The results of the RQLQ and the gene expression profiles were different between the Ph(+) and Ph(-) groups after receiving treatment with acupuncture. Activity, practical problems, and nasal symptoms showed significant improvement in the Ph(+) group versus the Ph(-) group. In addition, genes involved in active immune response, differential of Treg and cell apoptosis, were different in the Ph(+) and Ph(-) groups after acupuncture treatment. To our knowledge, this is the first report of cDNA microarray analysis of differential gene expression in the peripheral blood of allergic rhinitis patients before and after acupuncture treatment. Our data suggest that the balance between T helper 1 (Th1) and T helper 2 (Th2) cell-derived pro-inflammatory versus anti-inflammatory cytokines might be improved by acupuncture treatment. Differential gene expression profiles of Ph(+) and Ph(-) allergic rhinitis patients indicate the distinct physiological responses after receiving acupuncture treatment in these two groups. Our results suggest that personalized medical treatment should be essential for acupuncture treatment in allergic rhinitis patients.
Tsai, Hsuanhui Lydia, and 蔡琁卉. "A retrospective analysis of canine allergens profile in Taiwan: Detection of specific IgE in dog sera using protein chip microarray, and the identification of major proteins in brewer’s yeast." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/21921412511993670109.
Повний текст джерела臺灣大學
獸醫學研究所
98
Allergy has always played an important role in canine skin related diseases. The prevalence of canine allergic dermatitis (CAD) in the canine population was also estimated to be around 3-15%. The purpose of this study is to analyze and understand the type of allergens causing CAD in Taiwan. We analyzed 505 results from Excelsior bio-system’s protein chip microarray 62 item canine allergy test collected from May of 2006 to February of 2008. The result showed 80% of the cases had at least one positive result to the 62 items tested, and 54.06% of the dogs had at least one positive result in the mites group. Our finding shows that mites are the most important group of allergens responsible for CAD in Taiwan. Dermatophagoides pteronyssinus is the top allergen associated with CAD in Taiwan, having a positive rate of 29.50% (149/505), followed by Tyrophagus putrescentiae (24.55%, 124/505)、Aspergillus fumigates (18.02%, 91/505)、Blomia tropicalis (17.82%, 90/505)、and brewer’s yeast (Saccharomyces cerevisiae 17.43%, 88/505). In most countries, Dermatophagoides farinae is more commonly associated with CAD than Dermatophagoides pteronyssinus; however, our protein chip microarray showed that although Dermatophagoides farinae had a high positive rate (17.3%, 86/505), it is still significantly lower than that of Dermatophagoides pteronyssinus (p<0.0001). Other than identifying important allergens causing CAD in Taiwan, we also took brewer’s yeast, the only food allergen that made it to the top five lists further for western blot analysis. Brewer’s yeast is a common food supplement in which it serves rich vitamin B source; its presence is even common in hypoallergenic diets. With western blot analysis, we were able to identify the major proteins responsible for the positive results obtained from protein chip microarray such as triosephosphate isomerase, phosphoglycerate mutase 1, enolase 2, enolase 1 and alpha-glucosidase. Such information may be provided as valuable reference when pet owners choose the right diet for their pets, or manufacturers selecting ingredients for hypoallergenic diets.