Дисертації з теми "Muc expression"
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BORTESI, Laura. "Muc expression and their prognostic value in cholangiocarcinoma." Doctoral thesis, Università degli Studi di Verona, 2009. http://hdl.handle.net/11562/337443.
Повний текст джерелаCholangiocarcinoma (CC) is a malignant tumour composed of cells resembling those of the bile ducts and the second most common primary hepatic tumor after hepatocellular carcinoma, comprising 5-10% of primary liver neoplasms. Worldwide, cholangiocarcinoma accounts for 3% of all gastrointestinal cancers. Several studies have shown that the incidence and mortality rates of intrahepatic CC (IHCC) are rising, and those of extrahepatic cholangiocarcinoma (EHCC) are declining worldwide. To date, radical surgery is the only therapy offering a potential cure for CC patients, whose prognosis is generally poor with survival limited to few months. At present, the lack of a sensitive and specific early diagnostic marker is one of the reasons why CC has a fairly late presentation. Our aim was to find out a sensitive and specific marker which could be detected in patient serum and be correlated with tumor type and tumor burden since the potential survival benefit from early detection is shown by 70-80% survival for patients with early cholangiocarcinoma that was discovered incidentally on transplantation for primary sclerosing cholangitis. Mucins are heavily glycosylated glycoproteins and play a protective role in cells, in part serving as a barrier to the epithelial surface and to tumor cells. Boonla C. et al. recently showed that MUC5AC mucin is present in significant concentrations in serum from patients with CC. In a recent report, MUC5AC significantly correlated with neural invasion and advanced CC stage. Only a few studies have been carried out about mucins expression, in particular the gastric type and their relationship with CC morphology and prognosis. We stained all tissue for MUC1, MUC2, MUC6 and MUC5AC. The only interesting results were with MUC5AC. Recently the Liver Cancer Study Group of Japan divided IHCC into three morphological types: mass-forming (MF), periductal infiltrating (PI) and intraductal growth (IG). MF type is characterized by the presence of a spherical mass with a distinct border in the liver parenchyma, PI type presents tumor infiltration along the bile duct, occasionally involving the surrounding blood vessels and/or hepatic parenchyma, IG is characterized by papillary and/or granular growth into the bile duct lumen. PI type of CC present a significantly higher frequency of perineural invasion, lymph node metastasis and extrahepatic recurrence than MF type. The 5-year survival rates of patients with IG tumors or MF tumors is significantly better than those of patients with MF plus PI tumors or PI type alone. There is increasing evidence that intrahepatic cholangiocarcinoma should be divided in peripheral CC and perihilar CC based on etiopathogenesis, biological behaviour and clinical features. Perihilar CC may evolve from the lining epithelia of the major branches of the right and left hepatic bile duct and also from peribiliary glands around them and histologically is an adenocarcinoma resembling many of the features of hilar or extrahepatic CC. Peripheral CC presumably develop from small bile duct, ductules or canals of Hering. Hepatic progenitor cell may be involved in the tumorigenesis of peripheral CC. Distinguishing perihilar from hilar CC is often difficult, especially in advanced cases. In this study together with the surgeons we propose a different classification: peripheral CC for tumors that growth inside the liver parenchima, perihilar for tumors located in the liver but involving the hilum and for Klatskin tumors and extrahepatic for tumors of the distal biliary tract. This classification correlates well with morphology. Most (30/35) peripheral CC are of the MF type with only 5 cases MF+PI. Perihilar CC and EHCC are mostly PI or MF+PI reflecting a different growth pattern between the two. Beside a different growth pattern there is a statistical difference between the tumor types when comparing MUC5AC expression. 30 out of 35 (85,7%) peripheral CC were MUC5AC negative. 26 out of 39 (66,6%) perihilar CC were MUC5AC positive with different intensities but positive. 13 cases were negative. Of these 13 cases in 8 cases there were same positive cells but not enough to reach 5% of the total (our cut-off value), we don’t know if this positivity is of any significance, but it is something different compared to the true negativity that we see in MF. In our study MUC5AC seems to be a good immunohistochemical marker that can distinguish peripheral from perihilar CC, that correlates well with morphology and has a prognostic significance as well. This marker can be measured in the serum and can be used in the panel of tumor markers to search for in CC and could be useful in the follow-up.
Bedei, Ivonne. "Untersuchung zur MUC-18-Expression des metastasierenden malignen Melanoms mittels der RT-PCR-Methode." Ulm : Universität Ulm, Medizinische Fakultät, 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9818607.
Повний текст джерелаBrandenburg, Anna Klara. "Untersuchungen zur Expression der MUC1/Y und MUC/Z-Spleissvarianten des Tumorantigens MUC1 in Normalgeweben und Karzinomen des Magens sowie des ösophagogastrischen Überganges /." Köln, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000253343.
Повний текст джерелаBedei, Ivonne [Verfasser]. "Untersuchung zur MUC-18-Expression des metastasierenden malignen Melanoms mittels der RT-PCR-Methode / Ivonne Bedei." Ulm : Universität Ulm. Medizinische Fakultät, 2002. http://d-nb.info/1015323618/34.
Повний текст джерелаLlupi, Matilda, and Rabije Qoku. "Expression of mucins in normal salivary glands and mucoepidermoid carcinoma of salivary glands." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19760.
Повний текст джерелаMucoepidermoid carcinomas (MECs) are malignant epithelial mucin-producing tumours encountered in both major and minor salivary glands. The aim of this study was to investigate the histological characteristics of the expression of mucins (MUC1, MUC4, MUC5AC, MUC5B, MUC6) in MECs in search for a possible correlation between qualitative mucin expression and tumour grade. Twelve low-grade, five high-grade MECs and nine normal salivary glands adjacent to tumour tissue were investigated for these mucins by immunohistochemistry. The samples were evaluated with respect to staining pattern and positivity of specific cell types. Normal acinar cells mainly expressed the cytoplasmic mucin MUC5B. MUC1 and MUC4 were expressed in normal ductal cells in approximately half of the samples whereas MUC5AC expression was rare in normal salivary glands. MECs expressed MUC1, MUC4, MUC5AC and MUC5B. The apical membrane of mucous cells lining the cystic cavities showed the strongest staining for MUC1 and MUC4. The expression of MUC4 in mucous cells decreased with increasing histological grade. Expression of salivary mucin MUC5B in mucous cells in low-grade MECs was less intense compared to the expression of MUC5AC in the same cells. In high-grade tumours, a higher expression of MUC5B compared to MUC5AC was noted. In conclusion, MECs express different mucin quantity compared to normal salivary glands. MUC5AC expression in salivary tumour tissue seems to be a metaplastic feature and MUC4 appears to be related to tumour differentiation grade. The relationship between MUC5AC and MUC5B expression could be a useful tool in the diagnosis and estimation of prognosis of MECs.
Vogel, Teresa Maria [Verfasser]. "Die Expression von MHC Klasse I verwandten Genen (MIC) bei Psoriasis vulgaris / Teresa Maria Vogel." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1156264642/34.
Повний текст джерелаCarminati, Patricia de Oliveira. "Respostas celulares aos danos causados pelo antitumoral cisplatina em linhagens de fibroblastos humanos normais (MRC-5) e astrocítica (U343 MG-a)." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/17/17135/tde-21082007-103139/.
Повний текст джерелаA variety of antitumoral agents is capable of inducing DNA damage and eliciting cell cycle arrest, DNA repair or apoptotic responses. The initial response is a cell cycle arrest in an attempt to repair the DNA damage, but under conditions of extensive DNA lesions and high drug cytotoxicity, a signaling cascade triggers alternative mechanisms that inhibit cell proliferation and activate cell death pathways. Astrocytomas are the most common neoplasm of the central nervous system, comprising more than 60% of primary brain tumors. The standard treatment for theses tumors are radiotherapy followed by chemotherapy, however, the prognostic for these patients is still very discouraging. Cisplatin is an efficient DNA-damaging antitumor agent employed for the treatment of various human cancers, including gliomas. This drug binds to DNA, producing diverse types of adducts, which can block replication, transcription, and lead to apoptosis induction. In the present work, we analyzed cellular responses to treatments with the anticancer agent cisplatin in MRC-5 (normal human fibroblasts SV40 transformed) and U343 MG-a (glioma cell line). The responses were evaluated in terms of cell survival, apoptosis induction and profiles of gene expression by the cDNA microarrays method (only for U343 cell line). Cisplatin treatment resulted in a pronounced reduction in MRC-5 cell survival (~ 1%) and U343 (< 1%) after five days of treatment (cell survival test) with several concentrations of cisplatin, ranging from 12.5 to 300 ?M. Following 24h of treatment under similar cisplatin concentrations the survival was reduced at about 20-80% (cytotoxicity test). Both cell lines underwent apoptosis after treatment with different concentrations of cisplatin (12.5; 25 and 50 ?M), but U343 cells presented a maximal frequency of 20.4% apoptosis (25 ?M cisplatin treatment for 72h), while MRC-5 cells presented 11.0% (50 ?M cisplatin treatment for 48h). Analysis of gene expression performed for U343 cells treated with 25 ?M cisplatin for 48h showed several genes that were found significantly (p ? 0,05) down-regulated, most of them related with cytoskeleton alterations (TBCD, RHOA, LIMK2 and MARK1), apoptosis or cell survival (BCL2-XL, ING1, RHOA, VDP, TIMP2, DYRK3 and NFKBIE), cell invasion or metastasis (LIMK2, TIMP2 and CALU), DNA repair (SMC1L1), and cell metabolism (DYRK3, MARK1, TBCD, LIMK2, VDP and P4HB), among others. As a whole, these data demonstrate a serious commitment of the cell machinery after cisplatin-induced cellular damage. About 20% of the cell death corresponds to apoptosis, as was showed by the present assays. However, most of the cells are eliminated by the action of the drug in various levels of the metabolism and maintenance of cell integrity, due to the elevated degree of cisplatin citotoxicity, as demonstrated in cell survival tests.
Berggren, Bremdal Karin. "Evolution of MHC Genes and MHC Gene Expression." Doctoral thesis, Uppsala universitet, Evolutionsbiologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122011.
Повний текст джерелаSandoval, Evandra Strazza Rodrigues. "Avaliação do efeito imunomodulador das células mesenquimais estromais humanas em linfócitos T infectados pelo HTLV-1." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/60/60135/tde-18122014-163958/.
Повний текст джерелаThe characteristics of human multipotent mesenchymal stromal cells (MSC) can be influenced by the inflammatory microenvironment. However, the activity of the MSC against viral infections and the exact contribution of the infection to MSC dysfunction remain to be elucidated. We evaluated the immunosuppressive effect of MSC on HTLV-1 infected T lymphocytes and the susceptibility of MSC for this retroviral infection. Assays using co-culture of MSC and HTLV-1+ T lymphocyte lineages resulted in a decrease of tax gene expression and HTLV-1 p19 antigen. The reduction of the tax gene expression and the HTLV-1 p19 were associated with increased IL-6 secretion and higher PGE2, IDO and VCAM-1 gene expression. To confirm if MSC immunoregulation can influence the proliferation of HTLV-1 infected T lymphocytes, we compared the proliferation of HTLV-1+ individuals and healthy individuals cultured in the presence of MSC. It was observed that the lymphoproliferative inhibition by MSC in infected lymphocytes was similar to the control cells, and this effect was mediated by the expression of IDO and PGE2 genes. Furthermore, the pol gene and the HTLV-1 p19 protein were less expressed after co-culture assay with MSC, suggesting that the immunoregulation by MSC is effective in HTLV-1 infected T cells. In order to investigate the changes caused by HTLV-1 in MSC, we performed morphological and ultrastructural analysis of MSC exposed to HTLV-1 in vitro. The contact with HTLV-1 induced an increase of the intracellular vesicles, in addition the MSC cell surface molecules VCAM-1, ICAM-1 and HLA-DR were upregulated. The expression levels of VCAM-1 and HLA-DR molecules were increased in MSC cultured in the presence of PBMC isolated from HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP) individuals. The MSC differentiation process into osteocytes and adipocytes was not impaired by HTLV-1. In addition, MSCs were efficiently infected by HTLV-1 in vitro due to the direct contact with the HTLV-1-infected cells. However, cell-free virus particles were not capable of causing productive infection. Finally, to ensure the biological function of MSC in HTLV-1 infected patients, we investigated bone marrow (BM) cells from HTLV-1 asymptomatic carriers (HAC) and HAM/TSP individuals. Initially, we observed an infiltration of CD4+ T-cell lymphocytes in BM from HTLV-1 infected individuals and the detection of provirus revealed HTLV-1 integration. The number of colonies of fibroblast progenitor cells (CFU-F) was lower in HTLV-1 infected individuals compared to control. HTLV-1 MSC isolated showed surface molecules expression and differentiation into adipogenic and osteogenic cells similar to control MSC. Proviral DNA and HTLV-1 p19 protein were detected in MSC from HTLV-1 patients. The comparison of global gene expression profiles between MSC isolated from HAM/TSP and HAC individuals revealed that cathepsin B and ribosomal protein L10 were differentially expressed. In conclusion, this study suggests the importance of MSC immunomodulation on HTLV-1 infected T lymphocytes and describe that HTLV-1 infects and alters the biological characteristics of MSC.
Loh, Andrew Xiong Wan. "Cis-acting polymprophism of MIC game expression." Thesis, University College London (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497874.
Повний текст джерелаEllis, Shirley A. "MHC class I expression on human trophoblast." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280703.
Повний текст джерелаChitadze, Guranda [Verfasser]. "Expression and shedding of MHC class I-related chain (MIC) A and B molecules in human carcinoma cell lines / Guranda Chitadze." Kiel : Universitätsbibliothek Kiel, 2014. http://d-nb.info/1046312669/34.
Повний текст джерелаTheodore, George. "Regulation of SMC/MUC4 Expression in the Airway." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/364.
Повний текст джерелаMitchell, Erin Kimberley. "Downregulation of MHC class II expression by Salmonella." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614881.
Повний текст джерелаJohansson, Maria H. "Natural killer cell tolerance : influence of the MHC class I expression in the host /." Stockholm, 1999. http://diss.kib.ki.se/1999/91-628-3849-0/.
Повний текст джерелаWebber, David George. "Studies of keratinocyte MHC expression in cutaneous hypersensitivity responses." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294576.
Повний текст джерелаWang, Li. "MUC1 expression and molecular interactions in the oral cavity." Thesis, Boston University, 2004. https://hdl.handle.net/2144/31302.
Повний текст джерелаIncludes bibliography (leaves 165-186).
Mucins play an important protective and lubricative function in the oral cavity. They protect hard and soft tissues from desiccation, mechanical abrasion and exogenous insults. These functions are related to the structural properties of the mucin glycoproteins. The major high molecular weight mucin in salivary secretions has been identified as the MUC5B gene product, which is a large secreted gel-forming mucin. The major low molecular weight mucin in salivary secretions has been identified as the MUC7 gene product, which is a small secreted mucin. Another class of mucin molecules, the membrane-bound mucins, is structurally and functionally distinct from MUC5B and MUC7. Two of the membrane-bound mucins, MUC1 and MUC4, are expressed in all major human salivary glands as well as in buccal epithelial cells. The secreted forms of these mucins are also found at low levels in saliva. The aims of this study were: 1) to confirm the expression of membrane-bound mucin MUC1 in oral epithelial cells, 2) to determine whether the membrane-bound mucin MUC1 can form complexes with the secreted mucin MUC5B and to localize the MUC1 binding sites on the MUC5B polypeptide backbone and 3) to identify other proteins from a salivary protein pool which can form heterotypic complexes with MUC1. [TRUNCATED]
Bull, Camilla Louise. "Localisation and expression of epididymal apical protein I." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319142.
Повний текст джерелаPröls, Elma. "Einfluss des PHLDA1 Proteins auf die MHC Klasse I Expression." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-123376.
Повний текст джерелаMcLaren, Fiona Henderson. "A characterisation of MHC expression by rat neural stem cells." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621899.
Повний текст джерелаCresswell, Joanne. "HIV modulation of MHC class II biosynthesis and surface expression." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/14742.
Повний текст джерелаBallingall, Keith Thomson. "The characterisation and expression of ovine MHC class-II genes." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/14847.
Повний текст джерелаWang, Peng. "MUC1 expression in human uterine epithelial cell lines glycoform relationships and PPARgamma regulation of gene expression /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 158 p, 2010. http://proquest.umi.com/pqdweb?did=1997523961&sid=9&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаNollet, Séverine. "Étude du gène d'apomucine humaine MUC4 : cartographie, clonage, polymorphisme et organisation de la région 5'." Lille 1, 1999. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1999/50376-1999-111.pdf.
Повний текст джерелаIl est apparu que le domaine répétitif est de grande taille, homogène et codé par un seul exon inhabituellement grand. Il présente un polymorphisme complexe de type VNTR (Variable Number of Tandem Repeats), mais également un polymorphisme de restriction ; - identifié un deuxième domaine répétitif situé en aval de l'exon central dans un intron. Ce domaine présente également un polymorphisme de type VNTR. Il contient de nombreux sites potentiels de fixation de facteurs de transcription ; - caractérisé la totalité de la séquence amino-terminale située en amont du domaine répétitif central de MUC4 ; - établi l'organisation génomique de la partie 5 de MUC4 ; - confirmé le rôle potentiel du peptide signal trouve dans la séquence N-terminale de MUC4, ce peptide signal présentant une très forte similarité de séquence avec celui de la sialomucine de rat ASGP-1 ; - caractérisé et analyse la région contenant le promoteur et les séquences régulatrices du gène MUC4
Barrera-Robledo, Luis Fernando. "Phenotypic expression of Bcg gene in macrophages : regulation of MHC class II expression and nitric oxide production." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28986.
Повний текст джерелаIn this thesis, macrophage cell lines derived from the bone marrow of B10.A (B10S macrophages) and B10A.$Bcg sp{r}$ (B10R macrophages) were used to study functional parameters associated with Bcg gene activity. We have discovered that there is a significant difference in the production of NO$ sb2 sp-$ of B10S as compared with B10R macrophages in response to IFN-$ gamma.$ The bacteriostatic activity against M. bovis BCG was higher in B10R macrophages compared to B10S macrophages. The bacteriostatic activity of B10R and B10S macrophages correlated with the amount of nitric oxide produced by the macrophages. The antimycobacterial activity was inhibited by N$ rm sp{g}$MMLA, a specific inhibitor of nitrite and nitrate synthesis from L-arginine. Addition of L-arginine to IFN-$ gamma$-stimulated macrophages in the presence of N$ rm sp{g}$MMLA restored nitrite production and bacteriostatic activity of macrophages. Northern blot analysis of macrophage nitric oxide synthase (iNOS) revealed that the difference in NO$ sb2 sp-$ production by IFN-$ gamma$ treated B10S and B10R lines was reflective of the difference in iNOS mRNA expression.
The Bcg gene differentially affects the ability of BCG-resistant and -susceptible strains of mice to express important macrophage genes including Major Histocompatibility Complex (MHC) class II genes. We have found that differences at the level of I-A$ sb beta$ gene transcription, and I-A$ sb beta$ and I-A$ sb alpha$ mRNA stability may be responsible for observed differences between steady-state levels of I-A$ sb beta$ mRNA in B10R and B10S macrophages and consequently in the Ia surface protein expression. Differences observed in protein binding to the X box may explain the difference in transcription activation of the I-A$ sb beta$ gene. In addition, we found that B10R macrophages transfected with an Nramp-1 antisense cDNA containing a ribozyme construct expressed lower amounts of Ia antigen compared to mock-transfected macrophages in response to IFN-$ gamma.$ Overall, these findings strongly suggest involvement of the Nramp-1/Bcg gene in the control of Ia antigen expression in macrophages.
Finally, I have developed a new PCR-based method that allow an assessment of the mycobacterial content of infected macrophages. This method allows an assessment of the level of M. bovis BCG infection from a variety of sources, including peritoneal macrophages and macrophage lines, within a few hours, making it an assay of choice for rapid determination of the level of mycobacterial growth in infected cells, in experimental models of mycobacterial infection. (Abstract shortened by UMI.)
Müller, Silvia. "Untersuchungen über den Einfluss des Equiden Herpesvirus 1 auf die MHC I- und MHC II-Expression equiner Zellen." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-91599.
Повний текст джерелаMüller, Silvia. "Untersuchungen über den Einfluss des Equiden Herpesvirus 1 auf die MHC I- und MHC II-Expression equiner Zellen." kostenfrei, 2008. http://edoc.ub.uni-muenchen.de/9159/.
Повний текст джерелаSimpson, Stephen James. "The immunological status of transgenic mice displaying modified class I MHC expression." Thesis, University College London (University of London), 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293313.
Повний текст джерелаTennant, Laura. "The regulation of porcine classical and non-classical MHC class I expression." Thesis, University of Surrey, 2005. http://epubs.surrey.ac.uk/844085/.
Повний текст джерелаAxtner, Jan. "Immune gene expression and diversity in relation to gastrointestinal parasite burden in small mammals." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2013/6563/.
Повний текст джерелаDie Hauptaufgabe von MHC-kodierten Proteinen ist die Erkennung von körperfremden Molekülen sowie das Einleiten einer adäquaten Immunantwort, womit sie eine Schlüsselrolle im Immunsystem der Wirbeltiere einnehmen. Man nimmt an, dass ihre außergewöhnliche Vielfalt eine Antwort auf die sich ständig anpassenden Parasiten und Krankheitserreger ist, durch adaptive Selektion erhalten wird und dass die individuelle Allelausstattung einen Großteil der Parasitenbelastung erklärt, wofür bereits zahlreiche MHC-Studien Hinweise gefunden haben. Trotzdem ist unser Verständnis über die wirkenden Mechanismen teilweise noch lückenhaft. Ein stark vernachlässigter Aspekt hierbei sind z.B. eventuelle Unterschiede in der Genexpression der MHC-Allele und eine geringere Expression wäre gleichbedeutend mit einer geringeren Aktivierung des Immunsystems. Ich habe hierzu zwei frei lebende Kleinsäugerarten (Delomys sublineatus, Apodemus flavicollis) unter natürlichen Selektionsbedingungen untersucht. Dabei habe ich neben der genotypischen Diversität von MHC-Genen auch deren Expression, sowie die Genexpression immunregulativer Zytokine mit in Betracht gezogen und in Relation zur individuellen Belastung mit gastrointestinalen Helminthen gesetzt. Anhand von Leber und Milzproben beider Arten habe ich die Methode der ‚real-time PCR‘ zur relativen Quantifizierung von mRNA im Labor etabliert. Bereits für die Labormaus etablierte PCR-Primersysteme wurden an beiden Arten getestet und so konnten stabile Referenzgene gefunden werden, die Grundvoraussetzung für zuverlässige Genexpressionsmessungen. Für D. sublineatus konnte gezeigt werden, dass Helminthenbefall eine typische Th2 Immunantwort induziert, und dass der Zytokin Il4 Gehalt mit Befallsintensität strongyler Nematoden zunimmt. Es wurde für D. sublineatus kein signifikanter Zusammenhang zwischen MHC Expression oder anderen Zytokinen mit Helminthenbefall gefunden. In A. flavicollis wurde ein negativer Zusammenhang zwischen haptischer MHC-Expression und dem parasitären Nematoden Heligmosomoides polygyrus festgestellt, was auf eine Immunvermeidungsstrategie des Nematoden hindeutet. Ich fand typische positive und negative Assoziationen zwischen MHC-Allelen und anderen Helminthenarten, sowie Zeichen eines positiven Selektionsdruckes auf den MHC-Sequenzen, was sich durch eine erhöhte Rate aminosäureverändernder Mutationen zeigte. Diese nicht-synonymen Veränderungen waren auf Positionen innerhalb des zweiten Exons des DRB-Genes beschränkt, wohingegen die untersuchten Bereiche des ersten und dritten Exons stark konserviert vorlagen. Diese variablen Positionen kodieren Schlüsselstellen im Bereich der Antigenbindungsstelle im MHC Molekül. Zusammenfassend zeigt diese Arbeit, dass Genexpressionsstudien auch an Wildtieren durchgeführt und verlässliche Daten erzeugt werden können. Zusätzlich zur strukturellen Vielfalt sollten zukünftig auch mögliche Genexpressionsunterschiede bei MHC-Studien berücksichtigt werden, um ein kompletteres Bild der koevolutiven Wirt-Parasiten-Beziehungen zeichnen zu können. Dies ist vor allem dann von evolutiver Bedeutung, wenn die Parasiten in der Lage sind die MHC Expression aktiv zu beeinflussen. Die Studien konnten nicht die exakte Bedeutung von MHC-Genexpression in der antagonistischen Koevolution definieren, aber sie konnten zeigen dass diese Bedeutung stark von den jeweils beteiligten Partnern abzuhängen vermag.
Hilburger, Mary Elizabeth. "Persistent MHC class II glycoprotein expression by macrophages from Bcg-resistant mice: analysis of antigen presentation and membrane expression /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487848891515262.
Повний текст джерелаHeldt, Christian. "Differentielle Expression von HLA-DRB-Genen." Doctoral thesis, [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964994917.
Повний текст джерелаHansson, Lena. "Analysis of genomic Regions of IncreaseD Gene Expression (RIDGE)s in immune activation." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3928.
Повний текст джерелаGratchev, Alexei. "Regulation of expression of the intestinal MUC2 gene in vitro and in vivo." [S.l.] : [s.n.], 2001. http://www.diss.fu-berlin.de/2001/213/index.html.
Повний текст джерелаMadjid, Zahra. "Expression of complement regulatory proteins and MHC class 1 molecules on breast carcinomas." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415624.
Повний текст джерелаBrimpari, Minodora. "Regulation of MHC class I and II expression in mouse Epiblast stem cells." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609719.
Повний текст джерелаRussell, Ratanasuda Roslin. "The Major Histocompatibility Complex (MHC) gene expression in health and disease : the application of different technologies for gene expression profiling." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615647.
Повний текст джерелаCoquery, Nicolas [Verfasser]. "Intrahippocampal transplantation of MSC and MSC-expressing BDNF in Rat Models of Depression-like Behaviour / Nicolas Coquery." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2009. http://d-nb.info/1023665360/34.
Повний текст джерелаLefort, Sébastien. ""How much is 'about'?" modélisation computationnelle de l'interprétation cognitive des expressions numériques approximatives." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066421/document.
Повний текст джерелаApproximate Numerical Expressions (ANE) are imprecise linguistic expressions implying numerical values, illustrated by "about 100". We first focus on ANE interpretation, both in its human and computational aspects. After defining original arithmetical and cognitive dimensions allowing to characterize ANEs, we conducted an empirical study to collect the intervals of values denoted by ANEs. We show that the proposed dimensions are involved in ANE interpretation. In a second step, we proposed two interpretation models, based on the same principle of a compromise between the cognitive salience of the endpoints and their distance to the ANE reference value, formalized by Pareto frontiers. The first model estimates the denoted interval, the second one generates a fuzzy interval representing the associated imprecision. The experimental validation of the models, based on real data, show that they offer better performances than existing models. We also show the relevance of the fuzzy model by implementing it in the framework of flexible database queries. We then show, by the mean of an empirical study, that the semantic context has little effect on the collected intervals. Finally, we focus on the additions and products of ANE, for instance to assess the area of a room whose walls are "about 10" and "about 20 meters" long. We conducted an empirical study whose results indicate that the imprecisions associated with the operands are not taken into account during the calculations
Wilson, Caitlin Persin. "The Expression of Major Histocompatibility Class I and Major Histocompatibility Class II on Macrophages in the Presence of Aryl Hydrocarbon Antagonist (CH-223191)." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472429222.
Повний текст джерелаMüller-Hilke, Brigitte. "Die differentielle Expression von MHC-II-Genen als Mechanismus bei der Entstehung von Autoimmunerkrankungen." [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=960832386.
Повний текст джерелаHobbs, Christopher Geoffrey Laurence. "Laryngeal and tonsillar MHC class I expression : implications for human papillomavirus infection and carcinogenesis." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443273.
Повний текст джерелаMüller-Hilke, Brigitte. "Die differentielle Expression von MHC II-Genen als Mechanismus bei der Entstehung von Autoimmunerkrankungen." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2000. http://dx.doi.org/10.18452/13720.
Повний текст джерелаProtective/suppressive MHC class II alleles have been identified in man and mouse where they exert a disease-protective and immunosuppressive effect. As a mode of action we here investigate differential expression of MHC class II genes in different types of antigen-presenting cells impacting on the Type 1-Type 2 balance. We found that the murine I-Ab and I-Ek molecules, both well characterized as protective/suppressive, are expressed at a high level on almost all bone marrow derived macrophages for five to eight days after which expression slowly declines. In contrast, the collagen-induced arthritis (CIA) associated I-Aq-expression is lower, peaks over a shorter period and declines more rapidly. No differential expression could be detected on B cells or dendritic cells (DC). In addition, the differential MHC class II expression found on macrophages skews the cytokine response of T cells as shown by an in vitro restimulation assay. The results indicate that macrophages of the protective/ suppressive haplotypes express MHC class II molecules at a high level and exert Type 1 bias whereas low level expression favors a Type 2 response. We suggest that the extent of expression of the class II gene gates the back-signal from T cells and in this way controls the activity of macrophages. This effect mediated by polymorphic non-exon segments of MHC class II genes may play a role in determining disease susceptibility in mouse and man. Indeed, we also found differential expression of HLA II genes on human antigen presenting cells. However, in humans, differential expression affects both, B cells and monocytes and seems to be restricted to the non-polymorphic DRB4 gene coexpressed with the rheumatoid arthritis (RA) associated DR4 and the neutral DR7. We finally aimed at reverting the Type 1 bias characteristic of RA and CIA. A murine system was developed where polarized Type 2 cells were used to manipulate collagen II-specific type 1 T cells responsible for the development of collagen induced arthritis. The polarized inducer cells indeed exerted their maximum effect when the two T-cell populations were activated within the same cluster, implemented by allowing a single DC to present both their epitopes.
Chrisp, Jacqueline Anne. "Studies on the expression of the IL5 gene in T lymphocytes and the structure and expression of the novel MHC gene G1." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260728.
Повний текст джерелаBrito, Ledamir Risti de. "Expressão da MUC1 nas tubas uterinas de mulheres com gravidez tubária." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/87086.
Повний текст джерелаWesch, Natascha N. "The effects of long-term exercise training on SP72 and MHC-I expression in rats." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq30852.pdf.
Повний текст джерелаHayward, Dana. "Too Much of a Good Thing? Freedom of Expression in the Aftermath of Intractable Conflict." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23329.
Повний текст джерелаJenkinson, Helen Jane. "The expression of MHC class I and CD1D in human placental and extra-placental tissues." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245592.
Повний текст джерелаVenkitaraman, Ashok Ramakrishnan. "The regulation of MHC class 2 gene expression by tumours of the B lymphocyte lineage." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47696.
Повний текст джерелаAldous, Adrienne Light. "Physiological and metabolic influences on V? myosin isozyme expression in the SHHF/Mcc-facp rat /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487842372897344.
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