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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Human relaxin, prolactin and placental lactogen in human intrauterine tissues

Sakbun, Vannara January 1991 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 1991. / Includes bibliographical references (leaves 142-162) / Microfiche. / xv, 162 leaves, bound ill. (some col.) 29 cm
2

The role of the relaxin receptor RXFP1 in brain cancer

Kunanuvat, Usakorn 07 January 2013 (has links)
Relaxin (RLN2) promotes cell migration/invasion, cell growth, and neoangiogenesis through binding to the relaxin receptor RXFP1 in many types of cancers. However, there have been no studies to determine the role of this system in brain tumors, especially in Glioblastoma Multiforme (GB), the most lethal primary brain tumor in adults. GB is a systemic brain disease and aggressively invades brain tissue. In this study, we have identified RXFP1 receptor, but not RLN2, in GB cell lines and primary GB cells from patients. RLN2 treatment resulted in a significant increase in migration of GB cell line and primary GB cells. To determine molecular mechanisms that facilitate RXFP1-mediated migration in GB cells, we employed a pseudopodia assay and 2D LC-MS/MS to investigate the protein composition at cell protrusions (pseudopodia) during GB cell migration. We also observed the expression of known mediators promoting tissue invasion upon RLN2 treatment. We identified PGRMC1, a candidate protein from 2D LC-MS/MS as a novel relaxin target protein in RXFP1-expressing brain tumor cells. RLN2 treatment also caused an increase in cathepsin (cath)-B and -L and enhanced production of as the small Rho-GTPases Rac1 and Cdc42 in GB cells. Collectively, these findings indicate that RXFP1-induced cell migration is mediated by the upregulation and intracellular actions of Rac1, Cdc42 and by cath-B and cath–L who serve as matrix modulating factors to facilitate brain tumor cells migration. PGRMC1 also contributes to RXFP1-mediated cell migration through an as yet unknown mechanism. RLN2 is not present in the brain. We determined the role of a peptide ligand of RXFP1, the newly discovered C1q/TNF related peptide (CTRP)8-derived P74 peptide, in promoting migration in GB cells. Similar to relaxin, P74 was found to have pro-migratory effects on GB cells. The biological activity of this peptide was also similar to relaxin and caused the upregulation of cath-B, cath-D and cath-L in the primary GB cells, thus, indicating that P74 might serve as a novel RXFP1 activating peptide ligand. We conclude that RXFP1 receptor signaling plays a key role in brain tumors cell migration and invasion.
3

The role of the relaxin receptor RXFP1 in brain cancer

Kunanuvat, Usakorn 07 January 2013 (has links)
Relaxin (RLN2) promotes cell migration/invasion, cell growth, and neoangiogenesis through binding to the relaxin receptor RXFP1 in many types of cancers. However, there have been no studies to determine the role of this system in brain tumors, especially in Glioblastoma Multiforme (GB), the most lethal primary brain tumor in adults. GB is a systemic brain disease and aggressively invades brain tissue. In this study, we have identified RXFP1 receptor, but not RLN2, in GB cell lines and primary GB cells from patients. RLN2 treatment resulted in a significant increase in migration of GB cell line and primary GB cells. To determine molecular mechanisms that facilitate RXFP1-mediated migration in GB cells, we employed a pseudopodia assay and 2D LC-MS/MS to investigate the protein composition at cell protrusions (pseudopodia) during GB cell migration. We also observed the expression of known mediators promoting tissue invasion upon RLN2 treatment. We identified PGRMC1, a candidate protein from 2D LC-MS/MS as a novel relaxin target protein in RXFP1-expressing brain tumor cells. RLN2 treatment also caused an increase in cathepsin (cath)-B and -L and enhanced production of as the small Rho-GTPases Rac1 and Cdc42 in GB cells. Collectively, these findings indicate that RXFP1-induced cell migration is mediated by the upregulation and intracellular actions of Rac1, Cdc42 and by cath-B and cath–L who serve as matrix modulating factors to facilitate brain tumor cells migration. PGRMC1 also contributes to RXFP1-mediated cell migration through an as yet unknown mechanism. RLN2 is not present in the brain. We determined the role of a peptide ligand of RXFP1, the newly discovered C1q/TNF related peptide (CTRP)8-derived P74 peptide, in promoting migration in GB cells. Similar to relaxin, P74 was found to have pro-migratory effects on GB cells. The biological activity of this peptide was also similar to relaxin and caused the upregulation of cath-B, cath-D and cath-L in the primary GB cells, thus, indicating that P74 might serve as a novel RXFP1 activating peptide ligand. We conclude that RXFP1 receptor signaling plays a key role in brain tumors cell migration and invasion.
4

Birth in the rat : a central role for relaxin

Jones, S. A. January 1986 (has links)
No description available.
5

The effect of the hormone relaxin on the periodontal tissues

Rice, Bruce H. January 1960 (has links)
No description available.
6

Die Relaxin-Plasmakonzentration als prognostischer Marker bei Hündinnen mit Mammatumoren

Schweizer, Stephan 24 June 2010 (has links) (PDF)
In der vorliegenden prospektiven Studie wurde der postoperative Krankheitsverlauf von 93 Hündinnen mit Mammatumoren untersucht. Ziel der Studie war es, eine präoperative Einschätzung der Dignität der Tumoren und der Prognose für die Hündin anhand der Relaxin-Plasmakonzentration zu gewinnen. In einer humanmedizinischen Studie konnte gezeigt werden, dass an Brustkrebs erkrankte Frauen mit einer hohen Relaxin-Plasmakonzentration häufiger an einem malignen Tumor erkrankt sind, der Tumor häufiger bereits metastasiert hatte und die Frauen früher starben. Der Kastrationsstatus (p = 0,132), eine hormonelle Läufigkeitsunterdrückung (p = 0,960), vorausgegangene Graviditäten (p = 0,780) und das Auftreten von Pseudograviditäten (p = 0,138) bei den an Mammatumoren erkrankten Hündinnen hatten keinen Einfluss auf die präoperativ bestimmte Relaxin-Plasmakonzentration. An Mammatumoren erkrankte Hündinnen und gesunde Kontrolltiere hatten keine unterschiedlichen Relaxin-Plasmakonzentrationen (p = 0,813). Die Relaxin-Plasma-konzentrationen von Hündinnen mit einer Herzerkrankung aus der Patientengruppe waren identisch mit denen der herzgesunden Hündinnen aus der Kontrollgruppe (p = 0,328). Innerhalb der Patientengruppe war es hinsichtlich der gemessenen Relaxin-Plasmakonzentration unerheblich, ob die Hündinnen einerseits an einem solitären oder an multiplen Mammatumoren erkrankt waren (p = 0,470), oder ob andererseits bei ihnen einseitig oder beidseitig Mammatumoren feststellbar waren (p = 0,371). Weder die Tumorgröße (p = 0,518) noch eine Ulzeration (p = 0,746) wirkten sich auf die Relaxin-Plasmakonzentration aus. Das Vorliegen von Nahmetastasen (p = 0,131) oder eines malignen Mammatumors (p = 0,240) führte zu keiner erhöhten Relaxin-Plasmakonzentration. Entsprechend war auch das Stadium der Erkrankung ohne Einfluss auf das gemessene Relaxin (p = 0,829). Im Rahmen der Verlaufsuntersuchung gab es keinen Unterschied zwischen den präoperativ und den sechs Monate postoperativ bestimmten Relaxin-Plasmakonzentrationen (p = 0,983). Weder eine Rezidivierung des Mammatumors (p = 0,084) noch eine Metastasierung des Tumors in die Lunge sechs Monate postoperativ (p = 0,200) waren anhand der präoperativ bestimmten Relaxin-Plasmakonzentrationen vorhersehbar. Auch lieferte Relaxin keinen Hinweis auf einen Tod infolge der Mammatumoren (p = 0,205). In dieser Arbeit konnte nach Auswertung der vorliegenden Daten kein Hinweis auf die Verwendbarkeit der Relaxin-Plasmakonzentration als prognostischer Marker für an Mammatumoren erkrankte Hündinnen gefunden werden. Es konnte, wie in vorherigen Studien, bestätigt werden, dass Hündinnen mit Tumoren kleiner 3 cm (p = 0,001) und Hündinnen im Stadium I der Erkrankung (p = 0,009, p = 0,022) eine signifikant niedrigere Wahrscheinlichkeit haben innerhalb des ersten Jahres postoperativ an den Folgen des Mammatumors zu versterben als Hündinnen mit größeren Tumoren oder in einem höheren Stadium der Erkrankung. Hündinnen, die an einem ulzerierenden Mammatumor erkrankt waren (p = 0,002) oder bei denen histopathologisch nachweisbare Metastasen in den regionären Lymphknoten vorlagen (p = 0,001), hatten eine signifikant niedrigere Wahrscheinlichkeit das erste postoperative Jahr zu überleben. Die Tiere, bei denen sechs Monate postoperativ Metastasen in der Lunge festgestellt werden konnten (p = 0,001) oder bei denen es zu einer Rezidivierung des Mammatumors kam (p = 0,001), hatten eine sehr hohe Wahrscheinlichkeit innerhalb des ersten postoperativen Jahres zu versterben.
7

A study of the guinea pig relaxin gene(s)

Yee, Lee January 1991 (has links)
Thesis (Ph.D.)--University of Hawaii at Manoa, 1991. / Includes bibliographical references (leaves 169-179) / Microfiche. / xviii, 179 leaves, bound ill. 29 cm
8

Evidence for the existence of a prohormone for relaxin

Kwok, Simon C. M January 1978 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1978. / Bibliography: leaves 138-148. / Microfiche. / xiii, 148 leaves ill
9

Evolutionary analysis of the insulin-relaxin gene family from the perspective of gene and genome duplication events /

Olinski, Robert Piotr, January 2007 (has links)
Diss. (sammanfattning) Uppsala : Uppsala universitet, 2007. / Härtill 3 uppsatser.
10

Quantifying the Relative Abundance of the Relaxin Receptor in Cardiac Tissue from Pre-Menopausal and Post-Menopausal Rat Models

Clark, Emily 28 April 2020 (has links)
No description available.

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