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20 records – page 2 of 1.

X-chromosome inactivation and FMR1 CGG repeat and AGG interspersion number in female newborns conceived by assisted reproductive technologies (ARTs)

https://cwslc.andornot.com/en/permalink/catalog113945
Wu, Elizabeth Xianshi. [Vancouver, BC?]: University of British Columbia , 2012.
Website
http://hdl.handle.net/2429/42609
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Pregnancies derived from in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) are associated with increased rates of chromosome abnormalities, congenital malformations, low birth weight, pre-term births, multiple gestations, and imprinting disorders. Assisted reproductive techno…
Website
http://hdl.handle.net/2429/42609
Author
Wu, Elizabeth Xianshi
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2012
Subject
Faculty of Medicine
Theses
Abstract
Pregnancies derived from in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) are associated with increased rates of chromosome abnormalities, congenital malformations, low birth weight, pre-term births, multiple gestations, and imprinting disorders. Assisted reproductive technologies (ARTs) enable sub-fertile individuals to circumvent the natural selective pressures involved in human reproduction. The risks of ARTs may be due to the underlying causes of subfertility in these individuals or to the artificial processes used to achieve pregnancy. X-chromosome inactivation (XCI) may be at risk to perturbations in ARTs as it is thought to occur during the blastocyst stage when in vitro culturing would be taking place. We examined the XCI status in females conceived by ICSI (n=70), IVF (n=68), and naturally (NC, n=42).
Language
English
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Investigation of methylation and gene expression in placenta of pregnancies conceived by assisted reproductive technology (ART)

https://cwslc.andornot.com/en/permalink/catalog113947
Sakian, Sina. [Vancouver, BC?]: University of British Columbia , 2011.
Website
http://hdl.handle.net/2429/31191
Material Type
Thesis
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With the increasing use of assisted reproductive techniques (ART) every year, concerns have been raised regarding the possible effect these procedures have on the health of the children procured by them. Although patients born via ART are usually healthy, studies have associated these procedures wi…
Website
http://hdl.handle.net/2429/31191
Author
Sakian, Sina
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2011
Subject
Faculty of Medicine
Theses
Abstract
With the increasing use of assisted reproductive techniques (ART) every year, concerns have been raised regarding the possible effect these procedures have on the health of the children procured by them. Although patients born via ART are usually healthy, studies have associated these procedures with increased incidence of low birth weight (LBW), chromosomal abnormalities, birth defects and imprinting disorders. No study has proposed a single defined cause for any of these defects in ART infants, however it is believed that they may be due to both the invasiveness of ART and to genetic defects that are at the root of the infertility in the parents. In this study, changes in the methylation of the H19 and IGF2 imprinting control region 1 (ICR1) were investigated for both ART (n=92) and naturally conceived controls (n=19) using pyrosequencing.
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English
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DNA methylation at imprinted and non-imprinted genes in the sperm of men affected by severe male factor infertility

https://cwslc.andornot.com/en/permalink/catalog113950
Minor, Agata. [Vancouver, BC?]: University of British Columbia , 2010.
Website
http://hdl.handle.net/2429/29282
Material Type
Thesis
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Abnormal DNA methylation at imprinted and non-imprinted genes has been associated with spermatogenesis failure. However, little information is available regarding DNA methylation at those genes in men affected by severe male factor infertility. We hypothesized a higher incidence of aberrant DNA met…
Website
http://hdl.handle.net/2429/29282
Author
Minor, Agata
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2010
Subject
Faculty of Medicine
Theses
Abstract
Abnormal DNA methylation at imprinted and non-imprinted genes has been associated with spermatogenesis failure. However, little information is available regarding DNA methylation at those genes in men affected by severe male factor infertility. We hypothesized a higher incidence of aberrant DNA methylation would be present in the ejaculate and testicular sperm of men affected by severe male factor infertility compared to that in fertile control men. Furthermore, we hypothesized abnormal DNA methylation would also affect non-imprinted genes in the sperm of men affected by severe oligozoospermia.
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English
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Ligand-independent activation of steroid hormone receptors by gonadotropin-releasing hormone

https://cwslc.andornot.com/en/permalink/catalog113952
Chen, Junling. [Vancouver, BC?]: University of British Columbia , 2010.
Website
http://hdl.handle.net/2429/34980
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Thesis
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Thesis Shelf
Nuclear receptors including estrogen receptors (ERs) and progesterone receptors (PRs) are activated by their ligands as well as by signaling pathways in response to peptide hormones and growth factors. In gonadotrophs, gonadotropin releasing hormones (GnRHs) act via the GnRH receptor (GnRHR). Both …
Website
http://hdl.handle.net/2429/34980
Author
Chen, Junling
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2010
Subject
Faculty of Medicine
Theses
Abstract
Nuclear receptors including estrogen receptors (ERs) and progesterone receptors (PRs) are activated by their ligands as well as by signaling pathways in response to peptide hormones and growth factors. In gonadotrophs, gonadotropin releasing hormones (GnRHs) act via the GnRH receptor (GnRHR). Both GnRH-I and GnRH-II activate an estrogen response element (ERE)-driven luciferase reporter gene in LβT2 mouse pituitary cells, and GnRH-I is more potent in this regard.
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English
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Chromosome segregation and meiotic defects in carriers of chromosomal abnormalities

https://cwslc.andornot.com/en/permalink/catalog113956
Kirkpatrick, Gordon. [Vancouver, BC?]: University of British Columbia , 2009.
Website
http://hdl.handle.net/2429/9705
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Thesis
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Male carriers of chromosomal abnormalities (CA) are more frequent in the infertile population. These men have higher levels of sperm aneuploidy due to the aberrant segregation of the chromosomes involved in the abnormality. The presence of a CA may also influence the segregation of other chromosome…
Website
http://hdl.handle.net/2429/9705
Author
Kirkpatrick, Gordon
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2009
Subject
Faculty of Medicine
Theses
Abstract
Male carriers of chromosomal abnormalities (CA) are more frequent in the infertile population. These men have higher levels of sperm aneuploidy due to the aberrant segregation of the chromosomes involved in the abnormality. The presence of a CA may also influence the segregation of other chromosomes, in a process known as in interchromosomal effect (ICE). The behaviour of the CA during meiosis may account for the infertility observed in this population. We studied chromosome segregation, ICE and meiotic defects in a variety of CA. In carriers of CA, we determined the segregation patterns of chromosomes involved in the abnormality.
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English
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Aneuploidy and DNA fragmentation in morphologically abnormal sperm

https://cwslc.andornot.com/en/permalink/catalog113959
Tang, Steven Siu Yan. [Vancouver, BC?]: University of British Columbia , 2008.
Website
http://hdl.handle.net/2429/945
Material Type
Thesis
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Intracytoplasmic sperm injection (ICSI) has been a successful assisted reproductive technique for men with severe male-factor infertility. However, ICSI requires the subjective selection of normal looking sperm, which does not preclude the transmission of genetically abnormal sperm. Correlation bet…
Website
http://hdl.handle.net/2429/945
Author
Tang, Steven Siu Yan
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2008
Subject
Faculty of Medicine
Theses
Abstract
Intracytoplasmic sperm injection (ICSI) has been a successful assisted reproductive technique for men with severe male-factor infertility. However, ICSI requires the subjective selection of normal looking sperm, which does not preclude the transmission of genetically abnormal sperm. Correlation between abnormal sperm morphology and chromosomal abnormalities has been suggested but not been conclusive and less is known about the connection between sperm morphology and DNA integrity. Sperm morphology will be evaluated on its ability to identify the level of chromosomal abnormalities or fragmented DNA in sperm. To further focus this investigation on sperm morphology, men with infertility isolated to abnormal sperm morphology (isolated teratozoopsermia) are examined.
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English
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Meiotic defects in infertile men

https://cwslc.andornot.com/en/permalink/catalog113960
Ferguson, Kyle Akira. [Vancouver, BC?]: University of British Columbia , 2008.
Website
http://hdl.handle.net/2429/1228
Material Type
Thesis
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While the introduction of intracytoplasmic sperm injection (ICSI) has revolutionized the treatment of male infertility, concerns have been raised regarding the risk of chromosomal abnormalities in pregnancies derived from ICSI. Studies on sperm from infertile men have suggested that this population…
Website
http://hdl.handle.net/2429/1228
Author
Ferguson, Kyle Akira
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2008
Subject
Faculty of Medicine
Theses
Abstract
While the introduction of intracytoplasmic sperm injection (ICSI) has revolutionized the treatment of male infertility, concerns have been raised regarding the risk of chromosomal abnormalities in pregnancies derived from ICSI. Studies on sperm from infertile men have suggested that this population may produce higher rates of aneuploid sperm. Thus, we hypothesized that defects in early meiotic events may contribute to both male infertility and the production of aneuploid sperm.
Language
English
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Roles of Confined Placental Mosaicism (CPM) and H19/IGF2 imprinting in pregnancies derived from intracytoplasmic sperm injection (ICSI)

https://cwslc.andornot.com/en/permalink/catalog113961
Hatakeyama, Chiho. [Vancouver, BC?]: University of British Columbia , 2007.
Website
http://hdl.handle.net/2429/32719
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Thesis
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In contrast to the success of ICSI in treating male infertility, concerns have been raised about the health outcomes of the children conceived through this procedure. Cohort studies have shown that the ICSI population has an increase in low birth weight (LBW), birth defects, chromosomal abnormaliti…
Website
http://hdl.handle.net/2429/32719
Author
Hatakeyama, Chiho
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2007
Subject
Faculty of Medicine
Theses
Abstract
In contrast to the success of ICSI in treating male infertility, concerns have been raised about the health outcomes of the children conceived through this procedure. Cohort studies have shown that the ICSI population has an increase in low birth weight (LBW), birth defects, chromosomal abnormalities, and imprinting disorders. However, the underlying causes remain unknown.
Language
English
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Expression and function of HOXA genes in the normal ovary and ovarian carcinoma

https://cwslc.andornot.com/en/permalink/catalog113963
Ota, Takayo. [Vancouver, BC?]: University of British Columbia , 2006.
Website
http://hdl.handle.net/2429/30974
Material Type
Thesis
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Homeobox genes, which code for families of transcription factors, act at the top of genetic hierarchies. HOX genes specify positional identity during development, and in adult tissues, regulate differentiation and proliferation. Most ovarian carcinomas are derived from the ovarian surface epitheliu…
Website
http://hdl.handle.net/2429/30974
Author
Ota, Takayo
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2006
Subject
Faculty of Medicine
Theses
Abstract
Homeobox genes, which code for families of transcription factors, act at the top of genetic hierarchies. HOX genes specify positional identity during development, and in adult tissues, regulate differentiation and proliferation. Most ovarian carcinomas are derived from the ovarian surface epithelium (OSE). In contrast to other carcinomas, OSE differentiates further with neoplastic progression and acquires Mtillerian duct-derived epithelial properties. I tested the hypothesis that growth and differentiation in ovarian carcinogenesis are regulated by HOX genes.
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English
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Implications of BRCA-loss phenotype in epithelial ovarian carcinoma

https://cwslc.andornot.com/en/permalink/catalog113964
Press, Joshua Zephyr. [Vancouver, BC?]: University of British Columbia , 2006.
Website
http://hdl.handle.net/2429/32234
Material Type
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Loss of BRCA1/BRCA2 function through genetic or epigenetic mechanisms is common in epithelial ovarian carcinomas (EOC), but because there are multiple potential mechanisms of loss, the overall frequency is unknown. We characterized loss of BRCA1/BRCA2 at the DNA, RNA and protein level from an unsel…
Website
http://hdl.handle.net/2429/32234
Author
Press, Joshua Zephyr
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2006
Subject
Faculty of Medicine
Theses
Abstract
Loss of BRCA1/BRCA2 function through genetic or epigenetic mechanisms is common in epithelial ovarian carcinomas (EOC), but because there are multiple potential mechanisms of loss, the overall frequency is unknown. We characterized loss of BRCA1/BRCA2 at the DNA, RNA and protein level from an unselected, consecutive series 49 non-mucinous, invasive EOC. BRCAl-loss was found in 21/49 tumors (43%).
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English
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The prediction of adverse maternal outcomes in pre-eclampsia

https://cwslc.andornot.com/en/permalink/catalog113966
Devarakonda, Rajashree M. [Vancouver, BC?]: University of British Columbia , 2005.
Website
http://hdl.handle.net/2429/16403
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Thesis
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Pre-eclampsia (PET) continues to contribute to maternal and perinatal morbidity and mortality. Management decisions include an evaluation of maternal risk, which is assisted by expert opinion-based guidelines, while not accounting for gestational age (GA) at diagnosis. We evaluated the feasibility …
Website
http://hdl.handle.net/2429/16403
Author
Devarakonda, Rajashree M.
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2005
Subject
Faculty of Medicine
Theses
Abstract
Pre-eclampsia (PET) continues to contribute to maternal and perinatal morbidity and mortality. Management decisions include an evaluation of maternal risk, which is assisted by expert opinion-based guidelines, while not accounting for gestational age (GA) at diagnosis. We evaluated the feasibility of developing a severity score that can predict adverse maternal outcome.
Language
English
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Physical and functional interaction of p53 and p110a and implications in ovarian carcinogenesis

https://cwslc.andornot.com/en/permalink/catalog113967
Astanehe, Arezoo. [Vancouver, BC?]: University of British Columbia , 2005.
Website
http://hdl.handle.net/2429/16421
Material Type
Thesis
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n approximately 40% of ovarian cancers, PIK3CA, which encodes the p110α catalytic subunit of phosphatidylinositol 3-kinase (PI3K) is amplified. This amplification correlates with increased PIK3CA transcription, p110α protein expression, and PI3K activity. Moreover, PIK3CA is implicated as…
Website
http://hdl.handle.net/2429/16421
Author
Astanehe, Arezoo
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2005
Subject
Faculty of Medicine
Theses
Abstract
n approximately 40% of ovarian cancers, PIK3CA, which encodes the p110α catalytic subunit of phosphatidylinositol 3-kinase (PI3K) is amplified. This amplification correlates with increased PIK3CA transcription, p110α protein expression, and PI3K activity. Moreover, PIK3CA is implicated as an oncogene in ovarian cancers. Another common mutation in ovarian cancer leads to loss of p53 function. Alterations to p53 are known to be involved in tumour development and progression.
Language
English
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The maternal predisposition to the syndrome of pre-eclampsia

https://cwslc.andornot.com/en/permalink/catalog113968
Alasaly, Kadria A. [Vancouver, BC?]: University of British Columbia , 2004.
Website
http://hdl.handle.net/2429/15429
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Pre-eclampsia, which is characterized by maternal hypertension, proteinuria, hypoperfusion of end organs and a systemic maternal innate inflammatory response, is a leading cause of maternal mortality and morbidity world-wide. When of early-onset, pre-eclampsia is associated with fetal intrauterine …
Website
http://hdl.handle.net/2429/15429
Author
Alasaly, Kadria A.
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2004
Subject
Faculty of Medicine
Theses
Abstract
Pre-eclampsia, which is characterized by maternal hypertension, proteinuria, hypoperfusion of end organs and a systemic maternal innate inflammatory response, is a leading cause of maternal mortality and morbidity world-wide. When of early-onset, pre-eclampsia is associated with fetal intrauterine growth restriction (IUGR). IUGR can occur in isolation, so-called normotensive IUGR. What is poorly understood is that some women develop the maternal syndrome of pre-eclampsia whilst others have only the fetal syndrome (normotensive IUGR), despite the fact that the initiating event in both is believed to be reduced uteroplacental perfusion.
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English
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Fish analysis of chromosomal aneuploidies in spermatozoa from severely infertile men undergoing intracytoplasmic sperm injection (ICSI)

https://cwslc.andornot.com/en/permalink/catalog113969
Gao, Haijun. [Vancouver, BC?]: University of British Columbia , 2004.
Website
http://hdl.handle.net/2429/16195
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Thesis
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The association between subsets of male infertility, oligoasthenoteratozoospermia (OAT), obstructive azoospermic (OA), non-obstructive azoospermia (NOA), and increased risk of having chromosomal abnormalities in the sperm has not been investigated. Chromosomal aneuploidy in sperm will be systematic…
Website
http://hdl.handle.net/2429/16195
Author
Gao, Haijun
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2004
Subject
Faculty of Medicine
Theses
Abstract
The association between subsets of male infertility, oligoasthenoteratozoospermia (OAT), obstructive azoospermic (OA), non-obstructive azoospermia (NOA), and increased risk of having chromosomal abnormalities in the sperm has not been investigated. Chromosomal aneuploidy in sperm will be systematically investigated by standard methods with large sample sizes required to present significance.
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English
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Maternal leukocyte CD markers, apoptosis and band forms in preeclampsia

https://cwslc.andornot.com/en/permalink/catalog113970
Fuchisawa, Akiko. [Vancouver, BC?]: University of British Columbia , 2003.
Website
http://hdl.handle.net/2429/14664
Material Type
Thesis
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Preeclampsia is a pregnancy-specific condition, and it still remains one of the most common causes of maternal mortality in the developed world. Although the exact cause of preeclampsia has not been identified, it is most widely accepted that preeclampsia results from incomplete placentation. Inter…
Website
http://hdl.handle.net/2429/14664
Author
Fuchisawa, Akiko
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2003
Subject
Faculty of Medicine
Theses
Abstract
Preeclampsia is a pregnancy-specific condition, and it still remains one of the most common causes of maternal mortality in the developed world. Although the exact cause of preeclampsia has not been identified, it is most widely accepted that preeclampsia results from incomplete placentation. Interestingly, normotensive intrauterine growth restriction also shows the same defect of placentation. In preeclampsia, the maternal syndrome develops from a number of alternative pathways leading to uteroplacental mismatch and, consequently, the release of endothelium-activating factors. This research is focused on neutrophil activation and the hypothesis for this research was that maternal neutrophils and monocytes are inappropriately activated in preeclampsia but not in normotensive intrauterine growth restriction.
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English
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A Biological role for GnRH I and GnRH II at the maternal-fetal interface

https://cwslc.andornot.com/en/permalink/catalog113971
Zhou, Junshan. [Vancouver, BC?]: University of British Columbia , 2003.
Website
http://hdl.handle.net/2429/14957
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Remodeling of the endometrial extracellular matrix, which occurs during the early stages of pregnancy in the human, is mediated by the temporal expression of urokinase-type plasminogen activator (uPA) and matrix metalloproteinases (MMP) in both the maternal and fetal compartments and counterbalance…
Website
http://hdl.handle.net/2429/14957
Author
Zhou, Junshan
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2003
Subject
Faculty of Medicine
Theses
Abstract
Remodeling of the endometrial extracellular matrix, which occurs during the early stages of pregnancy in the human, is mediated by the temporal expression of urokinase-type plasminogen activator (uPA) and matrix metalloproteinases (MMP) in both the maternal and fetal compartments and counterbalanced by their respective endogenous inhibitors, plasminogen activator inhibitor (PAI-1) and tissue inhibitors of metalloproteinases (TIMPs) in both an autocrine and paracrine manner. To date, the factors capable of regulating the expression of uPA and MMP proteolytic systems at the maternal-fetal interface remain poorly characterized.
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English
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Influences of endocrine and autocrine factors in normal and neoplastic ovarian surface epithelium

https://cwslc.andornot.com/en/permalink/catalog113974
Choi, Kyung-Chul. [Vancouver, BC?]: University of British Columbia , 2001.
Website
http://hdl.handle.net/2429/13688
Material Type
Thesis
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The common epithelial ovarian tumors appear to arise from the ovarian surface epithelium (OSE), which is a simple squamous-to-cuboidal meso^helium covering the ovary. The exact mechanism of ovarian tumorigenesis is not well known even though this disease is the most frequent cause of cancer death i…
Website
http://hdl.handle.net/2429/13688
Author
Choi, Kyung-Chul
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
2001
Subject
Faculty of Medicine
Theses
Abstract
The common epithelial ovarian tumors appear to arise from the ovarian surface epithelium (OSE), which is a simple squamous-to-cuboidal meso^helium covering the ovary. The exact mechanism of ovarian tumorigenesis is not well known even though this disease is the most frequent cause of cancer death in gynecological malignancies. Repeated ovulation contributes to neoplastic transformation of OSE, indicating that the process of healing ruptured OSE may contribute to the disease. Therefore, it has been hypothesized that endocrine and autocrine factors may influence the occurrence of ovarian tumors in women.
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English
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The role for insulin-like growth factor-I in preimplantation embryonic development and decidualization following superovulation in the rat

https://cwslc.andornot.com/en/permalink/catalog113980
Katagiri, Seiji. [Vancouver, BC?]: University of British Columbia , 1996.
Website
http://hdl.handle.net/2429/4814
Material Type
Thesis
Call Number
Thesis Shelf
Superovulation causes detrimental effects, including embryonic loss and implantation failure. This study determined potential roles for insulin-like growth factor (IGF-I) in uterine environment regulation and preimplantation development, in conjunction with the detrimental effects of superovulation…
Website
http://hdl.handle.net/2429/4814
Author
Katagiri, Seiji
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
1996
Subject
Faculty of Medicine
Theses
Abstract
Superovulation causes detrimental effects, including embryonic loss and implantation failure. This study determined potential roles for insulin-like growth factor (IGF-I) in uterine environment regulation and preimplantation development, in conjunction with the detrimental effects of superovulation in the rat. IGF-I may be beneficial to preimplantation embryonic development. IGF-I stimulated embryonic development and metabolism in vitro and increased the rate of implantation and fetal development when the blastocysts were transferred into a receptive uterus.
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English
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Maternal progesterone and fetal cortisol responses to hypoxemia in pregnant sheep

https://cwslc.andornot.com/en/permalink/catalog113981
Wu, Li-Hua. [Vancouver, BC?]: University of British Columbia , 1996.
Website
http://hdl.handle.net/2429/4269
Material Type
Thesis
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The placenta is an important endocrine organ producing large amounts of steroid and protein hormones which are released into the maternal and fetal circulations. Moreover, it has a very high metabolic rate and consumes a significant proportion of the oxygen and glucose delivered to the uterus and i…
Website
http://hdl.handle.net/2429/4269
Author
Wu, Li-Hua
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
1996
Subject
Faculty of Medicine
Theses
Abstract
The placenta is an important endocrine organ producing large amounts of steroid and protein hormones which are released into the maternal and fetal circulations. Moreover, it has a very high metabolic rate and consumes a significant proportion of the oxygen and glucose delivered to the uterus and its contents. However, while there have been many studies on the effects of hypoxemia on fetal cardiovascular, metabolic and endocrine functions, there are limited data on the effects of reduced oxygenation on placental endocrine activities. In the present study, we examined the effects of acute (2-h) moderate (maternal Pao₂ lowered by 27-35%, n=5) and severe (maternal Pao₂ lowered by 41-58%, n=4) hypoxemia on placental progesterone output into the maternal circulation in 7 chronically instrumented pregnant sheep (125 to 136 d). Hypoxemia was achieved by lowering maternal inspired O₂ concentration and the hypoxemia period was preceded and followed by 2 h pre-hypoxia and recovery periods, respectively. Control experiments (n=4), involving 6 h periods of normoxia were also carried out.
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English
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Superovulation and chromosomal aberrations

https://cwslc.andornot.com/en/permalink/catalog113983
Ma, Sai. [Vancouver, BC?]: University of British Columbia , 1995.
Website
http://hdl.handle.net/2429/7516
Material Type
Thesis
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Thesis Shelf
In vitro fertilization (IVF) has been achieved in several mammalian species, including humans. Using the technique of IVF and embryo transfer, pregnancies can now be established in infertile women and thousands of live births have occurred. However, many of the embryos transferred to the uterus fai…
Website
http://hdl.handle.net/2429/7516
Author
Ma, Sai
Place of Publication
[Vancouver, BC?]
Publisher
University of British Columbia
Publication Date
1995
Subject
Faculty of Medicine
Theses
Abstract
In vitro fertilization (IVF) has been achieved in several mammalian species, including humans. Using the technique of IVF and embryo transfer, pregnancies can now be established in infertile women and thousands of live births have occurred. However, many of the embryos transferred to the uterus fail to achieve or sustain implantation. The failure of implantation has raised questions about the possible detrimental effect of superovulation on chromosomal complements. In this study, the hypothesis that chromosomal aberrations exist in mouse preimplantation embryos and human unfertilized oocytes after superovulation, was tested. The incidence of aneuploidy in spontaneously ovulated group (5.6%) was similar to that reported by others.
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English
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20 records – page 2 of 1.