Search Results
Results 501 - 550 of 1256
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Zanenga C A - - 2011
Two experiments were conducted to compare conception rates following embryo transfer (ET) of bovine embryos held and transported in Syngro(®) holding medium (Bioniche, Belleville, Ontario, Canada) with other 2 holding media: Emcare(®) (ICPbio, Auckland, New Zealand) for in vivo-derived embryos and HEPES-buffered synthetic oviduct fluid (H-SOF) for IVF-derived embryos. The ...
Showell Marian G - - 2011
Between 30% to 80% of male subfertility cases are considered to be due to the damaging effects of oxidative stress on sperm. Oral supplementation with antioxidants may improve sperm quality by reducing oxidative stress.   This Cochrane review aimed to evaluate the effect of oral supplementation with antioxidants for male ...
Fenech Michael - - 2011
The micronucleus (MN) assay is increasingly being used to study the association between DNA damage and infertility or pregnancy complications in humans. This review provides a brief overview of the studies published to date. The results of these studies appear to support the plausibility of the following hypotheses: (i) MN ...
Parraguez Víctor H - - 2011
The present study evaluated the hypothesis that the effects of hypoxia on sheep pregnancies at high altitude (HA) are mediated by oxidative stress and that antioxidant vitamins may prevent these effects. Both HA native and newcomer ewes were maintained at an altitude of 3589m during mating and pregnancy. Control low ...
Greene Jonathan M - - 2011
Vascular endothelial growth factor receptor-2 (VEGFR2) plays a pivotal role in angiogenesis by eliciting vascular endothelial cell growth when bound to VEGF, a powerful pro-angiogenic ligand. While Vegf and Vegfr2 are expressed throughout gestation, the latter third of gestation in mice is characterized by a marked increase in fetoplacental angiogenesis. ...
Warne David W - - 2011
This retrospective analysis of combined data (one Phase II and three Phase III clinical trials) of patients with oligo- or anovulatory infertility aimed to evaluate the association between pregnancy and midluteal serum progesterone (P4) level following ovulation induction and hence the indicative value of P4 for ovulation and pregnancy achievement. ...
Mansouri-Attia N - - 2011
During the bovine peri-implantation period, immune cells are exposed to endocrine and paracrine signals, which support feto-placental development. Recent studies in cattle have shown that the antiviral factor Mx2, known to be up-regulated by conceptus-derived interferon-τ in pregnancy, is detected in peripheral blood mononuclear cells (PBMC) and can be used ...
Rodrigues P G - - 2011
The aim was to evaluate whether pregnancy rates could be improved by randomly injecting recipient mares with flunixin meglumine (FM; Banamine(®), Schering-Plough, São Paulo, Brazil) on the day of embryo transfer combined or not with long-acting progesterone (P(4)) in commercial embryo transfer programs. One hundred sixty-five Mangalarga Marchador recipient mares ...
Mahomed Kassam - - 2011
Vitamin D deficiency can occur in people whose diet is relatively low in the vitamin and those who are not exposed to much sunlight. The objective of this review was to assess the effects of vitamin D supplementation on pregnancy outcome. We searched the Cochrane Pregnancy and Childbirth Group trials ...
Sartori R - - 2011
The aim of this study was to evaluate conception rates of fresh or frozen embryos in the morula and blastocyst stages of development when transferred to lactating Holstein cows. During a 365-day period, 213 Day-7 embryos were produced by superovulation in lactating Holstein cows or nulliparous Holstein heifers and transferred ...
González Félix H D - - 2011
The present work aimed to study the behavior of acute phase proteins (haptoglobin, serum amyloid A, acid soluble glycoprotein, fibrinogen, and albumin) in fasting-induced pregnancy toxemia in goats and their relationship with classical indicators of this disorder such as beta-hydroxybutyrate and nonesterified fatty acids in the blood and decreased urine ...
Ahmadi Firoozeh F Department of Reproductive Imaging, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, - - 2011
Structural pathologies in the uterine cavity such as müllerian duct anomalies (MDAs) and intrauterine lesions (fibroids, polyps, synechiae) may have important roles in subinfertility, implantation failure and pregnancy outcome. Various imaging modalities such as hysterosalpingography (HSG), sonography, laparoscopy and hysteroscopy are used in the evaluation of MDAs and intrauterine lesions. ...
Virant-Klun Irma - - 2011
The clinical results of in vitro fertilization of slowly frozen-thawed oocytes are known to be significantly worse than those obtained by fresh oocytes. Little is known about the factors affecting the clinical outcome of frozen-thawed oocytes. The aim of this retrospective study was to explore the role of oocyte cryopreservation ...
Malekar-Raikar S - - 2011
Objective. To report a case of primary hyperparathyroidism in a pregnant patient, report the obstetric and neonatal outcomes, and review the relevant literature. Results. A 29-year-old primigravida was successfully treated for PHP with minimally invasive resection of a parathyroid adenoma in the second trimester of pregnancy. A healthy baby girl ...
Beta Jarek - - 2011
Progesterone-induced blocking factor (PIBF) may be the mediator of the pregnancy maintenance effects of progesterone. The aim of this study is to investigate the potential value of measuring the maternal serum concentration of PIBF at 11-13 weeks' gestation in the prediction of spontaneous early preterm delivery. The maternal serum concentration ...
Tessanne K - - 2011
The development of transgenic technology has enormous potential for livestock improvement. Several methods have been employed for generating transgenic livestock to date, the most popular being pronuclear injection or somatic cell nuclear transfer using genetically modified cells. However, the high cost and relatively low efficiencies seen with these methods have ...
Johnston-MacAnanny Erika B - - 2011
The objective of this study was to compare outcome parameters in patients anticipated to have a good response to stimulation based upon baseline characteristics using either a gonadotropin releasing hormone (GnRH) agonist or antagonist protocol in their first in vitro fertilization (IVF) cycle. A retrospective chart review of all first-time ...
Pope C E - - 2011
For successful application of sperm sorting technology to a particular species, the various assisted reproductive techniques required for in vivo or in vitro embryo production must be established. Previously, we have demonstrated the in vivo developmental competence of cat embryos derived by IVF 1) with presumptive X-chromosome bearing sperm and ...
Baca Castex C - - 2011
Cryopreservation of equine embryos is still not a routine procedure. Pregnancies have been obtained after transfer of vitrified embryos of less than 300μm (Eldridge-Panuska et al. 2005). The aim of this study was to use the cryotop method (Kuwayama, 2007) to obtain pregnancies after transfer of vitrified thawed cooled and ...
Martí-Carvajal Arturo J - - 2011
Disseminated intravascular coagulation (DIC) is an acquired syndrome characterised by systemic intravascular activation of coagulation. There are several obstetric causes of DIC during pregnancy and postpartum. To assess the clinical effectiveness and safety of haematological interventions such as heparins (low molecular weight heparin (LMWH) and unfractionated heparin (UFH), danaparoid sodium, ...
Bollendorf A - - 2011
To compare the efficacy of two treatments for sperm with low hypoosmotic swelling (HOS) test scores - intrauterine insemination (IUI) with sperm pretreated with the protein digestive enzyme chymotrypsin versus in vitro fertilization (IVF) with intracytoplasmic sperm injection (ICSI). The choice of patient therapy was optional. The pregnancy rates following ...
Gleicher Norbert - - 2011
The FMR1 gene, mapping to an area of the X chromosome closely associated with autoimmunity also affects ovarian reserve, with specific genotypes associated with distinct ovarian aging patterns. They, therefore, could also be associated with differences of in vitro fertilization (IVF) outcomes, reported between races/ethnicities. We analyzed 339 consecutive IVF ...
Rodríguez-Dennen Fernando - - 2011
Pregnancy is accompanied by several hemodynamic, biochemical and hematological changes which revert to normal values after labor. The mean values of these parameters have been reported for developed countries, but not for Mexican women. Furthermore, labor constitutes a stress situation, in which these factors may be altered. It is known ...
Conrad Kirk P - - 2011
Relaxin is an approximately 6-kilodalton peptide hormone secreted by the corpus luteum, and circulates in the maternal blood during pregnancy. Relaxin administration to awake, chronically instrumented, nonpregnant rats mimics the vasodilatory phenomena of pregnancy. Furthermore, immunoneutralization of relaxin or its elimination from the circulation during midterm pregnancy in awake rats ...
Núñez R - - 2011
An important proportion of embryonic deaths in cattle occur during the critical period of embryo development and maternal recognition of pregnancy. High serum progesterone concentrations during this period are associated to higher embryo survival, and the use of eCG could enhance luteal activity. Two experiments were carried out to evaluate ...
Diaz A - - 2011
Alpacas are a domestic species of South American camelids with a great importance to highland people because of their high-quality fibre production. However, their reproductive performance has been reported to be poor, with a birth rate of 50% under the Andean community's conditions. Two experiments were designed to evaluate the ...
El-Gayar M - - 2011
Two separate studies were conducted in the course of which goat embryos were cryopreserved either by the open pulled straw (OPS) procedure of (Vajta et al. 1998 Mol. Reprod. Dev. 51, 53-58) or by conventional slow freezing. Embryos of each doe were assigned to both methods. A total of 94 ...
Laskarin Gordana - - 2011
Tumor-associated glycoprotein-72 (TAG-72) is physiologically present in secretory phase endometrium, but its presence and possible immunological role in early normal human pregnancy decidua has not received attention. The double labeling of paraffin-embedded early pregnancy decidua sections using B-72.4 anti-TAG-72 mAb and MNF 116 anti-cytokeratin mAb revealed the absence of TAG-72 ...
Ranasinghe R M S B K - - 2011
A database of milk progesterone profiles consisting 497 lactations in 3 dairy herds from northern and western regions of Japan was used to identify the characteristics and associated risk factors for prolonged luteal phase (PLP) and its effects on subsequent reproductive performance in high-producing Holstein cows. Milk samples were collected ...
El Hajj N - - 2011
Stochastic, environmentally and/or genetically induced disturbances in the genome-wide epigenetic reprogramming processes during male germ-cell development may contribute to male infertility. To test this hypothesis, we have studied the methylation levels of 2 paternally (H19 and GTL2) and 5 maternally methylated (LIT1, MEST, NESPAS, PEG3, and SNRPN) imprinted genes, as ...
Stoop Dominic - - 2011
Single blastocyst transfer has the advantage of maximizing the fresh single pregnancy rate. However, in patients with a low number of good quality embryos on day 3, it remains unclear whether immediate embryo transfer or further embryo culture with blastocyst transfer is the most preferable option. A retrospective cohort study ...
KÄ…tnik-Prastowska Iwona - - 2011
The present paper describes concisely the expression and role of α(1,2)-linked fucose on some glycoconjugates as well as the detection, distribution and potential role of that glycotope on human soluble plasma and cellular fibronectins in addition to the expression on both normal and pathological amniotic fluid and seminal plasma fibronectins. ...
Park Y S - - 2011
In conventional in vitro embryo production, oocytes are obtained from various ovaries, and donor characteristics, such as pedigree type, meat quality, or meat quantity, are not considered. The aim of this study was to examine the effects of pedigree type and meat quality and quantity of slaughterhouse donor cows on ...
Yong H - - 2011
In December 2009, 8 female Himalayan tahrs (Hemitragus jemlahicus) were synchronized by inserting CIDR devices for 13 or 15 days. One day before removal of the CIDRs, a combination of pregnant mare serum gonadotropin (PMSG) 400 IU and hCG 200 IU (PG600(®), Intervet, Boxmeer, the Netherlands) was intramuscularly injected into ...
Kimura K - - 2011
In cattle, a low pregnancy rate directly affects calf and milk production and brings about economic loss to livestock producers. The number of repeat breeder cows in herds decreases the overall pregnancy rate. Therefore, many studies have focused on improving the cows' reproductive performance. On the other hand, it has ...
Sánchez-Rodríguez Elly N - - 2011
Natural Killer (NK) cells are the most abundant lymphocytes in the decidua during early gestation. The interactions of NK cells with the extravillous cytotrophoblast have been associated with a normal spiral artery remodeling process, an essential event for a successful pregnancy. Recent data indicate that alterations in the amount of ...
Reimers Arne - - 2011
The placenta contains a large variety of metabolizing enzymes, among them UDP-glucuronosyltransferase (UGT). Several UGT2B isozymes have so far been detected in human placenta, but little is known on placental expression of UGT1A isozymes. The antiepileptic drug lamotrigine (LTG) is a UGT1A4-substrate, and its serum concentration falls by over 50% ...
Hansen Anette Tarp - - 2010
Abstract Background. Pregnancy is a hypercoagulable state with a 5- to 10- fold higher risk of venous thromboembolism. Existing reference intervals for fibrin D-dimer (D-dimer), functional fibrinogen (fibrinogen) and protein S, free antigen (protein S) are based on non-pregnant patients and reference intervals for pregnant patients are warranted. Objectives. The ...
Kim Chung-Hoon - - 2010
OBJECTIVE: To investigate whether levothyroxine (LT4) treatment has beneficial effects on IVF results and pregnancy outcome in infertile patients with subclinical hypothyroidism undergoing IVF/intracytoplasmic sperm injection (ICSI). DESIGN: Prospective, randomized trial. SETTING: University-affiliated infertility clinic. PATIENT(S): A total of 64 infertile patients with subclinical hypothyroidism, defined as an elevated serum ...
Ozdemir Suna - - 2010
OBJECTIVE: The finding that ischemia-modified albumin (IMA) is increased in pre-eclamptic pregnancy suggests a role for IMA as a potential biomarker for abnormal placental development related to miscarriage. This study was undertaken to evaluate IMA levels in women with recurrent pregnancy loss (RPL). STUDY DESIGN: This case-control study was performed ...
Lau S M - - 2010
AIMS/HYPOTHESIS: Diabetes in pregnancy is linked to development of obesity in the offspring, but the mechanisms are not fully understood. Gestational diabetes mellitus (GDM) occurs when beta cells are unable to compensate for the normal insulin resistance of late pregnancy. In this study, we used a murine model of beta ...
Rivera Fernando Acuna - - 2010
Fertility of lactating dairy cows is associated with reduced progesterone concentration (P4) compared with non-lactating animals. The objective of the current study was to determine whether P4 during growth of the first follicular wave affects embryo quality. Lactating Holstein cows at 33 ± 3 d postpartum were allocated to one ...
Santolaria P - - 2010
The antigen-specific IgG subclass response may be a convenient indicator of the underlying nature of T helper cell regulation. The aim of the present study was to identify possible differences in Neospora caninum-specific total plasma IgG, IgG1 and IgG2 antibody levels in purebreed and crossbreed pregnancies throughout gestation in beef ...
Argañaraz Martin Eduardo - - 2010
SummaryIn mammals, fertilization and preimplantation embryo development occurs in the oviduct. Cross-talk between the developing embryos and the maternal reproductive tract has been described in such a way as to show that the embryos modulate the physiology and gene expression of the oviduct. Different studies have indicated that transforming growth ...
Mayor P - - 2010
This study examined anatomical and histological characteristics of genital organs of 38 black agouti females in the wild in different reproductive stages, collected by rural hunters in the North-eastern Peruvian Amazon. Females in the follicular phase of the estrous cycle had greater antral follicle sizes than other females, the largest ...
Heng Yujing J - - 2010
OBJECTIVE:: The purpose of this study was to investigate the temporal changes in immunoreactive cystatin A and the enzymatic activity of cathepsins B, H, L, and S in human cervicovaginal fluid (CVF) in late pregnancy and spontaneous labor. STUDY DESIGN:: CVF was collected weekly (n = 95 women) from 36 ...
Kacerovsky Marian - - 2010
Objective. To determine changes in the amniotic fluid, soluble form of scavenger receptor for hemoglobin (sCD163) concentrations during advancing gestation, and in patients with preterm premature rupture of membranes (PPROM) complicated by histological chorioamnionitis were studied. Methods. One hundred and fifty-two women with singleton pregnancies were enrolled. The concentration of sCD163 in ...
Bora Shabana A - - 2010
Background: Persistent trophoblast is a recognised complication of salpingostomy for the treatment of ectopic pregnancy, with reported rates of 3-20%; hence, women are advised to have serum human chorionic gonadotrophin (hCG) levels monitored post-operatively. Although much less common, there are also reports of disseminated trophoblastic peritoneal implants after laparoscopic salpingectomy. ...
Zini Armand - - 2011
Seminal antisperm antibodies (ASAs) have been associated with male infertility and a reduced probability of achieving a spontaneous pregnancy. However, the impact of ASAs on reproductive outcomes after assisted reproductive technologies (ARTs) remains controversial. We sought to further examine the relationship between ASAs and reproductive outcomes after in vitro fertilization ...
Baston-Buest Dunja M - - 2011
Angiogenesis is required for successful implantation of the invading blastocyst. Vascular endothelial growth factor (VEGF) is an important key player in angiogenesis and vascular remodeling during the implantation process. Besides its well-characterized receptors VEGFR1 and VEGFR2, neuropilin-1 (NRP-1) has been shown to play an additional role in the signaling process ...
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