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Articles 3511 - 3540 of 3724

Full-Text Articles in Obstetrics and Gynecology

Medicalization Of Female Genital Cutting Among The Abagusii In Nyanza Province, Kenya, Carolyne Njue, Ian Askew Jan 2004

Medicalization Of Female Genital Cutting Among The Abagusii In Nyanza Province, Kenya, Carolyne Njue, Ian Askew

Reproductive Health

This study sought to understand the role that health providers play in the medicalization of female genital cutting (FGC) among the Abagusii community in western Kenya, among whom the practice continues to be almost universal. Interviews with service providers and their clients revealed an overwhelming belief that FGC fulfills a traditional cultural obligation among the Abagusii, and that it limits a woman’s sexual desire and confers respect on girls. New approaches are needed within this community to present FGC as violating human rights and national laws, as well as threatening girls’ and women’s health. The study recommends measures such as …


Encuestas De Voluntad De Pago Para Fijar Precios De Productos Y Servicios De Salud Reproductiva: Manual De Usuarios, Karen G. Fleischman Foreit, James R. Foreit Jan 2004

Encuestas De Voluntad De Pago Para Fijar Precios De Productos Y Servicios De Salud Reproductiva: Manual De Usuarios, Karen G. Fleischman Foreit, James R. Foreit

Reproductive Health

Social programs need to balance volume (coverage) and income (sustainability). The law of supply and demand states that we can not obtain coverage and support at the same time, because when prices rise, demand decreases. This manual presents willingness-to-pay (WTP) surveys that allow program managers to simulate changes in demand related to price, without actually changing prices. The Population Council, with The Futures Group International, developed these surveys that can be used for existing and new products and services, collect responses from clients with no formal education with sensitivity to their individual characteristics, and provide conservative estimates that accurately predict …


Female Circumcision In Indonesia. Extent, Implications And Possible Interventions To Uphold Women's Health Rights, Meiwita P. Budiharsana, Lila Amaliah, Budi Utomo Jan 2004

Female Circumcision In Indonesia. Extent, Implications And Possible Interventions To Uphold Women's Health Rights, Meiwita P. Budiharsana, Lila Amaliah, Budi Utomo

Reproductive Health

In Indonesia, the practice of female circumcision (FC) has long existed, but information concerning where and how it is carried out has been limited. The specific aims of the study conducted by the Population Council Jakarta were to provide research-based information on FC customary practices and their socio-cultural determinants, and if possible, to assess any long-term physical and psychological consequences. Study findings indicate that in general Muslim communities support the continuation of FC practice, because they perceive it as both a societal custom and a religious duty. The report strongly recommends that key donor agencies pressure the Ministry of Health …


Congenital Duodenal Diaphragm In Eight Children, Akhtar Nawaz, Hilal Matta, Alic Jacobsz, Omar Trad, Ahmed H. Al Salem Jan 2004

Congenital Duodenal Diaphragm In Eight Children, Akhtar Nawaz, Hilal Matta, Alic Jacobsz, Omar Trad, Ahmed H. Al Salem

Department of Obstetrics & Gynaecology

Background: Congenital duodenal obstruction (CDO) is a common and usually easy to diagnose cause of intestinal obstruction in the newborn, except when the cause of the obstruction is a duodenal diaphragm. We describe our experience with eight children who had intrinsic duodenal obstruction secondary to a duodenal diaphragm.
Methods: The medical records of 22 children with the diagnosis of congenital intrinsic duodenal obstruction were reviewed for age at diagnosis, sex, gestation, birth weight, clinical features, associated anomalies, method of diagnosis, treatment and outcome. Operative findings and procedures were obtained from the operative notes.
Results: Eight of the 22 children (36.4%) …


Analysis Of Cervical Smears In A Muslim Population, Shahnaz Wasti, Waleed Ahmed, Abbas Jafri, Behram Khan, Rizwan Sohail, Sheema Hassan Jan 2004

Analysis Of Cervical Smears In A Muslim Population, Shahnaz Wasti, Waleed Ahmed, Abbas Jafri, Behram Khan, Rizwan Sohail, Sheema Hassan

Department of Obstetrics & Gynaecology

Background: Screening for cancer of the cervix remains a neglected health care issue in Pakistan. To provide baseline data for future efforts to improve screening, we conducted a retrospective analysis of cervical smears taken in the obstetrics and gynaecological clinics of the Aga Khan University Hospital, Karachi, Pakistan.
Method: We collected data on cervical smear cytology for cervical smears taken from January 1, 1990 to December 31,1996. We assessed risk factors for dysplasia, including age, age at first marriage, and number of pregnancies.
Results: The overall prevalence of abnormal smears in our study was 0.5%. Of 20,995 cervical smears, 12,451 …


A Null Mutation For Tissue Inhibitor Of Metalloproteinases-3 (Timp-3) Impairs Murine Bronchiole Branching Morphogenesis., Sean E Gill, M Cynthia Pape, Rama Khokha, Andrew J Watson, Kevin J Leco Sep 2003

A Null Mutation For Tissue Inhibitor Of Metalloproteinases-3 (Timp-3) Impairs Murine Bronchiole Branching Morphogenesis., Sean E Gill, M Cynthia Pape, Rama Khokha, Andrew J Watson, Kevin J Leco

Obstetrics & Gynaecology Publications

Tissue inhibitors of metalloproteinases (TIMPs) regulate extracellular matrix (ECM) degradation by matrix metalloproteinases (MMPs). We have examined the role of TIMP-3 on ECM homeostasis and bronchiole branching morphogenesis during murine embryogenesis. Employing an in vitro organ culture system, we found decreased bronchiolar branching in null lungs when compared with wild type (WT) counterparts after 2 days in culture. When a synthetic inhibitor of MMPs at low dose was added to the culture system, branching was augmented regardless of genotype. Gelatin and in situ zymography revealed that null lungs exhibited enhanced activation of MMPs throughout lung development. We analysed the impact …


What Is Wrong With Medical Audit?, J H. Rizvi Aug 2003

What Is Wrong With Medical Audit?, J H. Rizvi

Department of Obstetrics & Gynaecology

No abstract provided.


Psychosocial Stress And Cervical Neoplasia Risk, Ann L. Coker, Sharon M. Bond, Margaret M. Madeleine, Kathryn J. Luchok, Lucia Pirisi Jul 2003

Psychosocial Stress And Cervical Neoplasia Risk, Ann L. Coker, Sharon M. Bond, Margaret M. Madeleine, Kathryn J. Luchok, Lucia Pirisi

CRVAW Faculty Journal Articles

OBJECTIVE: We assessed the association between psychosocial stress and preinvasive cervical neoplasia development controlling for HR-HPV infection.

METHODS: This case-control study enrolled low-income women receiving family planning services at health department clinics. There were 59 cases with biopsy confirmed HSIL and 163 with low-grade SIL and 160 controls with normal cervical cytology. A modified SLE scale was used to measure stressful events and the perceived impact of the event in the prior 5 years. Unconditional logistic regression was used to assess SIL risk and stressful events scores and by subscales.

RESULTS: After adjusting for age, HR-HPV infection, and lifetime number …


Aquaporin Proteins In Murine Trophectoderm Mediate Transepithelial Water Movements During Cavitation., Lisa C Barcroft, Hanne Offenberg, Preben Thomsen, Andrew J Watson Apr 2003

Aquaporin Proteins In Murine Trophectoderm Mediate Transepithelial Water Movements During Cavitation., Lisa C Barcroft, Hanne Offenberg, Preben Thomsen, Andrew J Watson

Obstetrics & Gynaecology Publications

Mammalian blastocyst formation is dependent on establishment of trophectoderm (TE) ion and fluid transport mechanisms. We have examined the expression and function of aquaporin (AQP) water channels during murine preimplantation development. AQP 3, 8, and 9 proteins demonstrated cell margin-associated staining starting at the 8-cell (AQP 9) or compacted morula (AQP 3 and 8) stages. In blastocysts, AQP 3 and 8 were detected in the basolateral membrane domains of the trophectoderm, while AQP3 was also observed in cell margins of all inner cell mass (ICM) cells. In contrast, AQP 9 was predominantly observed within the apical membrane domains of the …


Critical Appraisal Of Endometriosis Management For Pain And Subfertility, N F. Zuberi, J H. Rizvi Apr 2003

Critical Appraisal Of Endometriosis Management For Pain And Subfertility, N F. Zuberi, J H. Rizvi

Department of Obstetrics & Gynaecology

Objective: To critically appraise current best available management of pain and subfertility ascribable to endometriosis.
Methods: Medline and specialist computer databases were searched along with reference lists of known reviews and primary articles to identify cited articles not captured by electronic searches. We included all studies pertaining to treatment of pain and subfertility ascribable to endometriosis.
Discussion: Medical and surgical management options for pain and subfertility are presented as Evidence-based inquiries for critically appraised topics. Each problem is presented as an answerable question followed by assessment of literature search for level of evidence. This is followed by critical appraisal of …


Breast Diseases: A Histopathological Analysis Of 3279 Cases At A Tertiary Care Center In Pakistan, M. S. Siddiqui, Naila Kayani, Shahid Pervez, S. A. Aziz, S. Muzaffar, Z. Setna, M. Israr, S. H. Hasan, M. S. Gill Mar 2003

Breast Diseases: A Histopathological Analysis Of 3279 Cases At A Tertiary Care Center In Pakistan, M. S. Siddiqui, Naila Kayani, Shahid Pervez, S. A. Aziz, S. Muzaffar, Z. Setna, M. Israr, S. H. Hasan, M. S. Gill

Department of Pathology and Laboratory Medicine

Objective: To know the frequency of breast diseases in Pakistani females.

Methods: A retrospective analysis of 3279 breast specimens received over a period of 4 years (1 993-1996) at the department of pathology, the Aga Khan University Hospital.

Results: Out of a total of 3279 breast specimens, common breast lesions included infiltrating duct carcinoma 37%, followed by fibro adenoma 16.95%, fibrocystic change13.96%, mastitis 6.83% and duct ectasia 5.33%. Majority of the cases of infiltrating duct carcinoma were encountered in the 5th and 6th decades of life. Tumour size was 2 or >2 cms. in 93% of cases and 40% of …


Responsiveness Of Bovine Cumulus-Oocyte-Complexes (Coc) To Porcine And Recombinant Human Fsh, And The Effect Of Coc Quality On Gonadotropin Receptor And Cx43 Marker Gene Mrnas During Maturation In Vitro., Michele D Calder, Anita N Caveney, Lawrence C Smith, Andrew J Watson Feb 2003

Responsiveness Of Bovine Cumulus-Oocyte-Complexes (Coc) To Porcine And Recombinant Human Fsh, And The Effect Of Coc Quality On Gonadotropin Receptor And Cx43 Marker Gene Mrnas During Maturation In Vitro., Michele D Calder, Anita N Caveney, Lawrence C Smith, Andrew J Watson

Obstetrics & Gynaecology Publications

Substantially less development to the blastocyst stage occurs in vitro than in vivo and this may be due to deficiencies in oocyte competence. Although a large proportion of bovine oocytes undergo spontaneous nuclear maturation, less is known about requirements for proper cytoplasmic maturation. Commonly, supraphysiological concentrations of FSH and LH are added to maturation media to improve cumulus expansion, fertilization and embryonic development. Therefore, various concentrations of porcine FSH (pFSH) and recombinant human FSH (rhFSH) were investigated for their effect on bovine cumulus expansion in vitro. Expression of FSHr, LHr and Cx43 mRNAs was determined in cumulus-oocyte complexes to determine …


Quality Improvement: Physician Providers, And The Women Health Connection Program, In The Provision Of Breast And Cervical Cancer Screening Services In Nevada., Salome K. Kapella Jan 2003

Quality Improvement: Physician Providers, And The Women Health Connection Program, In The Provision Of Breast And Cervical Cancer Screening Services In Nevada., Salome K. Kapella

UNLV Theses, Dissertations, Professional Papers, and Capstones

Quality Improvement is one of the best solutions to the performance of healthcare services. The purpose of this study is to identify areas that need to be improved in relationship between physician providers and the Women Health Connection Program (WHC) in the provision of breast and cervical cancer screening services in Nevada. An assessment of how physicians view the program, their cooperation with the WHC program, an analysis of areas for improvement and the value of services to WHC clients have been discussed in order to improve the quality of breast and cervical cancer in the state. Comparisons have been …


All In Due Time: Perspectives On Childbirth From Deaf Parents, Rsa Region V Project Jan 2003

All In Due Time: Perspectives On Childbirth From Deaf Parents, Rsa Region V Project

Course Materials

Six Deaf couples discuss their experiences of giving birth. The stories they share represent a variety of factors and complications that occurred before, during, and after the births of their children.


Increased Risk Of Cervical Canal Infections With Intracervical Foley Catheter, S Siddiqui, Nf Zuberi, Afia Zafar, Rn Qureshi Jan 2003

Increased Risk Of Cervical Canal Infections With Intracervical Foley Catheter, S Siddiqui, Nf Zuberi, Afia Zafar, Rn Qureshi

Department of Obstetrics & Gynaecology

OBJECTIVE: To evaluate the effect of intracervical Foley catheter insertion, for the induction of labor, on cervical canal infection.
DESIGN: A prospective interventional study with paired analysis.
PLACE AND DURATION OF STUDY: The study was conducted in the department of Obstetrics and Gynecology at the Aga Khan University, Karachi, between June 1 and August 31, 2002.
SUBJECTS AND METHODS: In 45 women undergoing cervical ripening with intracervical Foley catheter for the induction of labour at term, cervical swabs were taken for culture and sensitivity before its insertion and again after its spontaneous expulsion or removal.
RESULTS: Intracervical …


Clarifying The Lower Incidence Of Birth Defects In The Midwest Of Western Australia : A Study Using Capture Re-Capture Methodology, Donna Baker Jan 2003

Clarifying The Lower Incidence Of Birth Defects In The Midwest Of Western Australia : A Study Using Capture Re-Capture Methodology, Donna Baker

Theses: Doctorates and Masters

In April 2000 the Western Australian Birth Defects Registry held its 20th Anniversary Scientific Symposium to signify the first 20 years of the Birth Defects Registry in Western Australia. At the Symposium, significant trends and occurrences in birth defects within Western Australia over the past 20 years were addressed. One factor highlighted in the Registry's 1980-1999 report was that birth defects were reported less frequently in rural regions compared with metropolitan areas. Data collected from the metropolitan area is considered by the Birth Defects Registry to be the most accurate. Therefore, incidence rates of birth defects in this area arc …


Embryo And Gamete Development Upon Exposure To Cca Components: Cro3, Cuo, And As2o5, Nerbana Talaat-Elsebaei Mahmoud Jan 2003

Embryo And Gamete Development Upon Exposure To Cca Components: Cro3, Cuo, And As2o5, Nerbana Talaat-Elsebaei Mahmoud

Theses and Dissertations in Biomedical Sciences

Production of functional gametes and healthy embryos is essential for proliferation of all vertebrates, especially humans. Many compounds have toxic effects on developing gametes and embryos among which are chromium trioxide (CrO3), cupric oxide (CuO) and arsenic pentaoxide (As2O5) as a mixture (CCA) or individually. Controversy surrounding the safety of CCA-treated wood centers primarily on the toxicity of its components and the potential for these metals to be released from the wood.

The aim of this research is to test the hypothesis that CCA components have deleterious effects on embryo development, oocyte maturation and …


Rac-1 And Iqgap Are Potential Regulators Of E-Cadherin-Catenin Interactions During Murine Preimplantation Development., David R Natale, Andrew J Watson Dec 2002

Rac-1 And Iqgap Are Potential Regulators Of E-Cadherin-Catenin Interactions During Murine Preimplantation Development., David R Natale, Andrew J Watson

Obstetrics & Gynaecology Publications

Adherens junction formation is fundamental for compaction and trophectoderm differentiation during mammalian preimplantation development. We recently isolated an IQGAP-2 cDNA from a differential display-polymerase chain reaction screen of bovine preimplantation developmental stages. IQGAP-1 and -2 proteins mediate E-cadherin-based cell-to-cell adhesion through interactions with beta-catenin and the Rho GTPases, rac1 and cdc42. Our study demonstrates IQGAP-1,-2, rac-1 and cdc42 mRNAs are present throughout murine preimplantation development. IQGAP-1 and rac-1 protein distribution changes from predominantly plasma membrane associated to predominantly cytoplasmic as the embryo progresses through cleavage divisions and compaction to the blastocyst stage.


The Gamma-Subunit Of The Na-K-Atpase As A Potential Regulator Of Apical And Basolateral Na+-Pump Isozymes During Development Of Bovine Pre-Attachment Embryos., L C Barcroft, S E Gill, A J Watson Sep 2002

The Gamma-Subunit Of The Na-K-Atpase As A Potential Regulator Of Apical And Basolateral Na+-Pump Isozymes During Development Of Bovine Pre-Attachment Embryos., L C Barcroft, S E Gill, A J Watson

Obstetrics & Gynaecology Publications

Expression and activity of the Na-K-ATPase within the basolateral membrane domains of the trophectoderm epithelium provide the driving force for accumulation of Na(+) and Cl(-) across the nascent epithelium, mediating fluid movement into the forming blastocoel. Within the trophectoderm of the bovine blastocyst, multiple isozymes of the Na-K-ATPase are expressed. Immunolocalization has demonstrated that the alpha1-isozyme localizes within the basolateral membrane, whereas the alpha 3-isozyme localizes to the apical cell margins. Gene-specific RT-PCR and wholemount indirect immunofluorescence confocal laser scanning microscopy were used to examine expression of the Na-K-ATPase gamma-subunit (a regulatory subunit of the Na-K-ATPase) throughout development of bovine …


Comparative Study--Efficacy, Safety And Compliance Of Intravenous Iron Sucrose And Intramuscular Iron Sorbitol In Iron Deficiency Anemia Of Pregnancy, A Wali, A Mushtaq, Nilofer Sep 2002

Comparative Study--Efficacy, Safety And Compliance Of Intravenous Iron Sucrose And Intramuscular Iron Sorbitol In Iron Deficiency Anemia Of Pregnancy, A Wali, A Mushtaq, Nilofer

Department of Obstetrics & Gynaecology

Objective: (1) To determine an alternative iron supplementation with better efficacy, compliance & safety in treatment of iron deficiency anemia during pregnancy, (2) to reduce blood transfusion during pregnancy, labor and puerperium.
Material and Method: A prospective comparative study. A total number of 60 pregnant women with the gestational age of 12 - 34 weeks were included in the study who were suffering from iron deficiency anemia. They were divided in 3 groups (A, B and C). Group A (n15) received intravenous iron sucrose according to recommended dose containing 500 mg of iron sucrose for storage, in group B (n=20) …


Histiocytosis X Of The Vulva, R M. Rizvi, C Nasreen, N Jafri Sep 2002

Histiocytosis X Of The Vulva, R M. Rizvi, C Nasreen, N Jafri

Department of Obstetrics & Gynaecology

No abstract provided.


Epidermal Growth Factor Receptor (Egfr) As A Prognostic Marker: An Immunohistochemical Study On 315 Consecutive Breast Carcinoma Patients, S. A. Aziz, Shahid Pervez, N. Kayani, M. H. Rahbar, S. Khan Mar 2002

Epidermal Growth Factor Receptor (Egfr) As A Prognostic Marker: An Immunohistochemical Study On 315 Consecutive Breast Carcinoma Patients, S. A. Aziz, Shahid Pervez, N. Kayani, M. H. Rahbar, S. Khan

Department of Pathology and Laboratory Medicine

Objective: To assess the independent and interdependent prognostic value of epidermal growth factor receptor (EGFR) in carcinoma of breast in female population. The Type I family of growth factor receptors includes epidermal growth factor receptor (EGFR also known as EGFRI).

Methods: The expression of EGFR protein was analysed immunohistochemically on 315 tumour specimens of infiltrating ductal carcinoma of breast. These patients also had axillary lymph nodes sampling.

Results: Overexpression and/or amplification of EGFR was observed in 70 (22.00%) tumours. Eleven (16%) were grade I, 43 (61%) grade II and 16 (23%) grade Ill tumours. Axillary lymph node metastasis had significant …


Jadelle® Levonorgestrel Rod Implants: A Summary Of Scientific Data And Lessons Learned From Programmatic Experience, Irving Sivin, Harold A. Nash, Sandra N. Waldman Jan 2002

Jadelle® Levonorgestrel Rod Implants: A Summary Of Scientific Data And Lessons Learned From Programmatic Experience, Irving Sivin, Harold A. Nash, Sandra N. Waldman

Formulation/Product Development

This scientific monograph provides a comprehensive summary of the clinical characteristics of Jadelle levonorgestrel (LNG) rod implants, as observed during clinical trials conducted by the Population Council. The monograph also reviews lessons learned about how to provide Jadelle, based partly on conclusions gleaned from the extensive experience with Norplant, the earlier implant system, and suggests practical ways in which to introduce Jadelle into family planning programs.


Are You My Parent? Are You My Child? The Role Of Genetics And Race In Defining Relationships After Reproductive Technological Mistakes, 5 Depaul J. Health Care L. 15 (2002), Raizel Liebler Jan 2002

Are You My Parent? Are You My Child? The Role Of Genetics And Race In Defining Relationships After Reproductive Technological Mistakes, 5 Depaul J. Health Care L. 15 (2002), Raizel Liebler

UIC Law Open Access Faculty Scholarship

Imagine that you are a married woman who wants to have a genetically related child with your husband. Your doctor tells you that you are infertile, and therefore you and your husband go to XYZ fertility clinic to receive in vitro treatment. You have your eggs harvested, your husband supplies sperm, and ten embryos are created. Five embryos are implanted in your uterus and five are frozen and kept by the fertility clinic for your later use. You successfully conceive and give birth to twins. You notice that the children you give birth to are of a different race than …


Using Operations Research To Strengthen Programmes For Encouraging Abandonment Of Female Genital Cutting. Report Of A Consultative Meeting On Methodological Issues For Fgc Research, Frontiers In Reproductive Health Jan 2002

Using Operations Research To Strengthen Programmes For Encouraging Abandonment Of Female Genital Cutting. Report Of A Consultative Meeting On Methodological Issues For Fgc Research, Frontiers In Reproductive Health

Reproductive Health

The Population Council’s Frontiers in Reproductive Health program, with funding from USAID, organized a consultative meeting on the practice of female genital cutting (FGC) in Nairobi, Kenya in April 2002. The meeting brought together a small group of researchers and program managers who are actively undertaking operations research and systematic program evaluations to review the state of the art concerning intervention research design and measurement issues. The deliberations at this workshop should stimulate interest both in undertaking operations research more routinely when programming anti-FGC activities and in furthering the development and application of research methods appropriate for this subject. Several …


Practicing What We Preach? A Study Of The Implementation Of Exemplary Midwifery Process In Clinical Education, Ginette Lange Jan 2002

Practicing What We Preach? A Study Of The Implementation Of Exemplary Midwifery Process In Clinical Education, Ginette Lange

Seton Hall University Dissertations and Theses (ETDs)

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Prevalence And Risk Factors For Vaginal Candida Colonization In Women With Type 1 And Type 2 Diabetes, Ella M. De Leon, Scott J. Jacober, Jack D. Sobel, Betsy Foxman Jan 2002

Prevalence And Risk Factors For Vaginal Candida Colonization In Women With Type 1 And Type 2 Diabetes, Ella M. De Leon, Scott J. Jacober, Jack D. Sobel, Betsy Foxman

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Diabetes mellitus increases the rate of vaginal colonization and infection with Candida species

Methods

We surveyed women with diabetes receiving care at either an urban or suburban diabetes clinic to examine the relationship between vaginal Candida colonization, diabetes type and duration, and HbA1c level. 101 participants completed the self-administered questionnaire and self-collected a vaginal swab for Candida culture. Candida colonization was similar by age and race.

Results

Type 1 diabetics were three times as likely as type 2 diabetics to be colonized with any Candida species (OR = 3.4; 95% CI: 1.03, 11.41; p = 0.04); even …


Placental Peroxisome Proliferator-Activated Receptor Gamma And Leptin Receptor In Human Pregnancy, Gwyneth H. Gladstones Jan 2002

Placental Peroxisome Proliferator-Activated Receptor Gamma And Leptin Receptor In Human Pregnancy, Gwyneth H. Gladstones

Theses : Honours

Leptin is a 16kDa peptide hormone that has recently been implicated in human reproductive processes. Like other hormones, leptin exerts its influence through its receptor. Of the three major isoforms of the receptor (OB-Ra, OB-Rb, and 0B-Re), OB-Ra (the dominant short form) has been implicated in transport processes within rat and human placentas, suggesting a role for it in implantation and pregnancy maintenance. The peroxisome proliferator-activated receptors (PPARs) are ligand-dependent transcription factors that are a subfamily of nuclear hormone receptors. PPARs form heterodimers with another nuclear hormone receptor, RXRα, before binding to PPAR response elements (PPREs). Recently PPARϒ/RXRα heterodimers have …


Sensitivity Of Bovine Blastocyst Gene Expression Patterns To Culture Environments Assessed By Differential Display Rt-Pcr., D R Natale, P A De Sousa, M E Westhusin, A J Watson Nov 2001

Sensitivity Of Bovine Blastocyst Gene Expression Patterns To Culture Environments Assessed By Differential Display Rt-Pcr., D R Natale, P A De Sousa, M E Westhusin, A J Watson

Obstetrics & Gynaecology Publications

The use of culture media to support the development of preimplantation embryos to the blastocyst stage is often associated with detrimental effects on normal development. These effects have been uncovered largely by investigating the phenotypic abnormalities displayed by fetuses and newborns derived from cultured preimplantation embryos. Research to understand the impact of culture on the embryonic developmental programme has focused on embryo metabolism, gene expression and genomic imprinting. We have used differential display RT-PCR to examine culture influences on global transcript pools in bovine embryos. Others have examined culture influences on candidate "marker genes" in cultured murine, ovine and bovine …


Cyclooxygenase-2 And Prostaglandin E(2)(Pge(2)) Receptor Messenger Rnas Are Affected By Bovine Oocyte Maturation Time And Cumulus-Oocyte Complex Quality, And Pge(2) Induces Moderate Expansion Of The Bovine Cumulus In Vitro., M D Calder, A N Caveney, M E Westhusin, A J Watson Jul 2001

Cyclooxygenase-2 And Prostaglandin E(2)(Pge(2)) Receptor Messenger Rnas Are Affected By Bovine Oocyte Maturation Time And Cumulus-Oocyte Complex Quality, And Pge(2) Induces Moderate Expansion Of The Bovine Cumulus In Vitro., M D Calder, A N Caveney, M E Westhusin, A J Watson

Obstetrics & Gynaecology Publications

Expression of cyclooxygenase-2 (COX-2) and prostaglandin E(2) (PGE(2)) receptor 2 (EP2) are necessary for rodent cumulus expansion in vivo. Prostaglandin E(2) receptor 3 (EP3) has been detected in bovine preovulatory follicles and corpora lutea. The current experiments examined the effect of PGE(2) on bovine cumulus expansion in vitro and expression of COX-2, EP1, EP2, EP3, and EP4 mRNAs in bovine cumulus-oocyte complexes (COCs) at 0, 6, 12, 18, and 24 h time points during maturation in vitro. Concentrations of PGE(2) above 50 ng/ml resulted in moderate cumulus expansion of bovine COCs, but expansion did not occur in the absence of …