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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.
111

Windows to the Womb: Visualization, Metaphor and Reproduction in the Early Eighteenth Century and Today

Wagner, Darren N. 11 August 2009 (has links)
My thesis is a historical and cultural study of how the womb was visualized in Britain circa 1660-1775 as well as during the twenty-first century. Prior to the late seventeenth century, the womb was frequently explained as an occult phenomenon, which is to say, as an enigmatic object with inexplicable powers. Because of the social significance and personal investment involved with reproduction, the womb was continually the subject of speculation and conjecture. Additionally, the womb was considered as crucially influencing female well-being, psychology, and sexuality. Following the prerogative of late seventeenth and early eighteenth-century empiricism and human science, the womb was increasingly the subject of inquiry, especially as it had been long perceived an occluded phenomenon that had been rarely examined or described visually. The progression of the visualization of the womb during the late seventeenth and eighteenth century incorporated and instituted certain features in the visual illustrations that continue to act as precedents for medical scientific uterine imaging today.<p> Having traced the dissolution and influence of earlier occultist beliefs about the womb, I found that a regular set of metaphors were used in explaining the womb during the eighteenth century. These metaphors provided conceptual themes for the anatomical illustrations of the womb that were contemporaneously produced. One such metaphorical understanding was the brain-womb, wherein the brain and the womb were commonly analogized through both literary tropes and medical pathologies. An overarching concept that directed how the womb was understood was the perception that the womb was an autonomous entity within the female body. This precept allowed that the womb could perform various, often malignant, activities that vitally altered the female constitution. The visual images created for anatomical and medical treatises responded to these metaphors and conceptualizations, responses which markedly altered how the womb, reproduction, and the female body were understood. My final consideration relates these metaphorical and conceptual features of eighteenth-century visualizations of the womb to modern-day uterine imaging. Although optical technology has vastly changed between these two eras, many features and conceptualizations have carried forward, crucially informing how we now perceive the uterus.
112

Analysis of some novel uterine extracellular matrix proteins and a growth factor

Al Ramadan, Saeed Yaseen 15 May 2009 (has links)
This dissertation focused on two classes of molecules implicated in processes of implantation and placentation in sheep and pigs. Study one examined the temporal/spatial distribution of several Small Integrin-Binding Ligand, N-Linked Glycoprotein (SIBLING) family members in cyclic and pregnant ovine uterus. Studies two and three evaluated the relationships between progesterone (P4) and estrogen (E2) and their receptors (PGR and ESR1, respectively) on FGF7 mRNA expression within the endometrium and placenta of pigs. Study one showed that dentin sialophosphoprotein (DSPP) was first detected in luminal epithelium (LE) of Day 15 cyclic and pregnant sheep. Stromal expression of DSPP was first detected on Day 20 of pregnancy in stratum compactum and remained prominent in stroma through Day 120. Stromal DSPP protein was positively influenced by the conceptus based upon analysis of a unilaterally pregnant ewe model system. Immunoreactive dentin matrix protein 1 (DMP1), matrix extracellular phospoglycoprotein (MEPE) were localized to the stroma of cyclic and pregnant sheep, however, these proteins appeared to be constitutively expressed. BSP was not detected in ovine endometrium. Study two determined the effects of E2, P4, P4+E2, P4+the PGR antagonist (ZK137, 316), and P4+E2+ZK on FGF7 mRNA expression in uterine LE of ovariectomized pigs. Results indicate that P4 is permissive to FGF7 mRNA expression by down-regulating PGR in LE; P4 stimulates PGR-positive uterine stromal cells to release an as yet unidentified progestamedin that induces FGF7 mRNA expression by LE; E2 and P4 can induce FGF7 mRNA in the absence of PGR rendered nonfunctional by ZK. Study three showed the expression of ESR1, PGR and FGF7 in the uterine and placental tissue of pregnant pigs from Day 20 through 85. Results reveal a positive correlation between stromal cell expression of PGR and FGF7 mRNA which suggests that P4 is permissive to FGF7 mRNA expression by down-regulating PGR in LE. FGF7 mRNA in later pregnancy is maintained by the release of progestamedin from PGR-positive stromal cells. A novel finding was the presence of ESR1 in porcine placenta on Days 20 through Day 85 of pregnancy suggesting that E2 may play important roles in the placental biology of the pig.
113

The roles of estradiol-17 beta and prolactin in uterine gland development in the neonatal ewe

Carpenter, Karen Denise 01 November 2005 (has links)
Endometrial glands are required for adult uterine function and develop post-natally in mammalian species. Therefore, studies were conducted using neonatal ewes as a model to determine: 1) the roles of estradiol-17-alpha and estrogen receptor-alpha (ER-beta) in endometrial gland development; 2) the role of ovaries in endometrial gland development; 3) the role of prolactin in endometrial gland development; and 4) factors regulating prolactin receptor expression in endometrial glands. Study one determined the effects of neonatal exposure of ewes to estradiol-17-alpha valerate (EV); EM-800, an ER-beta antagonist; or CGS-20267, an aromatase inhibitor on endometrial gland development. Results indicate E2-17-alpha does not regulate endometrial gland differentiation or development. Additionally, ER-beta does not regulate primary differentiation of glandular epithelium, but does influence coiling and branching morphogenesis of endometrial glands. Study two determined the effects of ovariectomy on endometrial gland morphogenesis. Results suggest that the ovary and, thus, an ovarian-derived factor(s) regulate, in part, the coiling and branching of endometrial glands. Expression of subunits of activin, follistatin, and inhibin in the neonatal ovine ovary in addition to modulation of the components of the activin/follistatin system in the uterus of ovariectomized ewes supports the hypothesis that the ovarian factors that influence endometrial adenogenesis in the neonatal ewe may be activin, follistatin, and/or inhibin. Studies three and four determined the role of prolactin in endometrial adenogenesis in the neonatal ewe. Studies in which either hypoprolactinemia or hyperprolactinemia were induced indicate that prolactin regulates ovine endometrial adenogenesis in the neonatal ewe. The aim of study five was to determine transcription factors that regulate the glandular epithelium specific expression of prolactin receptor. Prolactin receptor exon 2 was cloned and sequenced, but no identifiable exon 1 or promoter was found. Additionally, many bovine contigs containing portions of the prolactin receptor gene were identified suggesting the bovine genome will be a useful tool as it becomes more complete. These results indicate ER-beta, prolactin and prolactin receptor, along with an unidentified ovarian factor(s), influence endometrial gland development in the neonatal ewe; however, exposure of the neonatal ewe to exogenous estradiol-17-alpha prevents differentiation and development of endometrial glands.
114

Matrix metalloproteinase-3 in uterus and endometriosis /

Cox, Kathryn Elizabeth, January 2001 (has links)
Thesis (Ph. D.)--University of Missouri--Columbia, 2001. / "May 2001." Typescript. Vita. Includes bibliographical references (leaves 180-198). Also available on the Internet.
115

Haben Lignane im Weizen- und Leinsamenbrot eine östrogenartige Wirkung auf Uterus und Mamma bei der ovarektomierten Ratte im Vergleich mit 17-β-Östradiol? / Do lignans in wheat- and flaxseed bread have an estrogen-like effect on uterus and mammary gland of the ovariectomized rat compared to 17-β-estradiol?

Kölbel, Jens 10 November 2015 (has links)
No description available.
116

Untersuchungen zum Vorkommen von Chlamydien in Eileiter und Uterus des Schweines und deren mögliche Bedeutung für das Infertilitätsgeschehen

Hoffmann, Grit 07 November 2007 (has links) (PDF)
Chlamydien haben ein breites Wirtsspektrum und können vielfältige Krankheitssymptome hervorrufen. Obwohl übereinstimmend angenommen wird, dass Chlamydien Fruchtbarkeitsstörungen bei der Sau verursachen, sind zahlreiche Fragen ungeklärt. So ist bisher unbekannt, ob Chlamydien die Eileiter des Schweines besiedeln und krankhafte Veränderungen hervorrufen können. Ziel dieser Arbeit war es deshalb, Eileiter reproduktionsgestörter Sauen auf Chlamydien zu untersuchen und deren mögliche Bedeutung als Infertilitätsursache zu eruieren. Zeitgleich wurden auch Uteri beprobt und diversen differenzialdiagnostisch relevanten Analysen unterzogen. Letztlich sollte durch die Bestimmung von Zearalenon in der Galle das differenzialdiagnostische Spektrum vervollständigt werden. Insgesamt wurden die Genitalorgane von 42 reproduktionsgestörten Sauen (Jungsauen: n=14; Altsauen: n=28; wiederholte Umrausche) aus drei Betrieben auf Chlamydien untersucht. Bei 20 Sauen (Gruppe 1) wurden ein Eileiter und der Uterus, bei weiteren 22 Sauen (Gruppe 2) Ampulle, Isthmus und uterotubale Verbindung beider Eileiter und der Uterus untersucht. Genitalien acht tragender Sauen dienten als Kontrollen. Zum Nachweis von Chlamydien kamen ein kommerzieller IFT (Chlamydia Direct IF Identification) und eine nested PCR (Nachweis des MOMP) mit anschließender Sequenzierung positiver PCR-Produkte zur Anwendung. Eileiter bzw. Eileitersegmente und Uteri wurden histologisch, Uteri fortpflanzungsgestörter Sauen zudem bakteriologisch untersucht. Bei 27 Sauen erfolgte eine Bestimmung von Gesamt-Zearalenon mittels HPLC in der Gallenflüssigkeit. Die IFT- und PCR-Ergebnisse differierten erheblich. Mit dem IFT wurden wesentlich mehr positive Ergebnisse als mit der PCR generiert. Bei 30 (60 %) der insgesamt 50 untersuchten Sauen wurden Chlamydien mittels PCR nachgewiesen. In Gruppe I waren 6 (30 %) der Uteri und 7 (35 %) der Eileiter Chlamydia-positiv, während in der Gruppe II 8 (36,4 %) der Uteri und 12 (54,5 %) der Eileiter als positiv befundet wurden. Tragende Tiere wiesen jeweils 3 (37,5 %) Chlamydia-positive Uteri und Eileiter auf. Nur in einem Fall (12,8 %) konnten Chlamydien ausschließlich im Eileiter detektiert werden. Chlamydien wurden uni- oder bilateral in einem oder mehreren Eileitersegmenten ohne oder mit zeitgleicher Besiedlung des Uterus nachgewiesen. Insgesamt wurden 41 spezifische PCR-Amplifikate aus Eileitersegmenten und Uteri von 26 reproduktionsgestörten Tieren der Gruppen I und II und 4 trächtigen Sauen sequenziert. Am häufigsten wurden Chlamydophila psittaci (n = 24) und Chlamydia suis (n = 10) detektiert. Seltener waren Chlamydophila abortus (n = 4) und Chlamydia trachomatis (n = 3) festzustellen. Insgesamt wiesen 34 (89,5 %) von 38 histologisch untersuchten Uteri entzündliche Veränderungen auf, die zu 94,1 % (n=32) chronisch waren. Entzündliche Infiltrationen mit Immunzellen wurden sowohl in Ampullen (47,9 %) als auch Isthmen (22,9 %) der Eileiter beobachtet. Die Uteri enthielten überwiegend zeitgleich mehrerer Bakterien, die als fakultativ bis obligat pathogen zu beurteilen waren. E. coli dominierte (78,0%). 21 (77,8 %) Sauen wiesen ≥ 50 ng/ml Gesamtzearalenon auf und wurden als positiv bewertet. Es bestanden keine Zusammenhänge zwischen den Chlamydienbefunden und Ergebnissen der übrigen Untersuchungen. Es ist zu schlussfolgern, dass Chlamydien unterschiedlichster Spezies Uterus und Eileiter kolonialisieren. Sie sind in der Schweinepopulation vermutlich weit verbreitet. Da auch tragende Sauen Chlamydien im Genitale enthielten, muss eine Infektion nicht zwangsläufig eine In- bzw. Subfertilität verursachen, noch für zu identifizierende Faktoren vermutlich prädisponierend wirken. Chronische Entzündungen der Uteri sind ähnlich häufig wie entzündlich veränderte Eileiter zu beobachten. Eine direkte Assoziation zwischen genitaler Entzündung und Infektion mit Chlamydien war nicht nachweisbar. Entzündungen von Eileiter und Uterus sind als Sterilitätsursache vermutlich bedeutend. Ob Chlamydien strukturelle und/oder funktionelle Eileiter- und Uterusveränderungen verursachen können, bleibt ebenso wie die Risiken für den Menschen abzuklären, die durch potenziell zoonotische Chlamydien wie Chlamydophila abortus entstehen können.
117

Fetal dönem boyunca uterusun gelişimi /

Coşar, Fatma. Sulak, Osman. January 2004 (has links) (PDF)
Tez (Yüksek Lisans) - Süleyman Demirel Üniversitesi, Sağlık Bilimleri Enstitüsü, Anatomi Anabilim Dalı, 2004. / Bibliyografya var.
118

Reproductive physiology of the female cat : with special reference to cervical patency, sperm distribution and hysterography /

Chatdarong, Kaywalee, January 2003 (has links) (PDF)
Diss. (sammanfattning). Uppsala : Sveriges lantbruksuniv., 2003. / Härtill 4 uppsatser.
119

The uterine proteoglycan expression in pregnancy and labor /

Hjelm Cluff, Ann, January 2004 (has links)
Diss. (sammanfattning) Stockholm : Karol inst., 2004. / Härtill 4 uppsatser.
120

Studies of oestrogen and progesterone receptors in the sow uterus : with special emphasis on the oestrous cycle and early pregnancy /

Sukjumlong, Sayamon, January 2005 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2005. / Härtill 4 uppsatser.

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