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Oocyte in Medical News

Reduced ovarian reserve associated with increased risk of trisomic pregnancy

...man's ovarian reserve is most likely to be mainly determined by her genes: the number of oocytes a woman is born with and the rate of depletion of her oocyte pool is believed to be heritable. This is reflected in the similar ages at menopause of mothers and daughters. However, exactly which genes are involv...

New Approach to Progesterone Supplementation in ART Revealed in Recently Published White Paper

...progesterone. (1) Key Findings from the Roundtable Luteal phase support should be initiated on the evening of or the day after oocyte retrieval. It is critical for the first two weeks and should continue for six to eight weeks after a positive pregnancy test is obtained. ...

Research Identifies Predictors for Successful IVF

...levels (ng/ml) in patients who used ENDOMETRIN were significantly higher than levels achieved in women who used IM-PIO. At more than 26 days following oocyte retrieval, ng/ml for ENDOMETRIN was 110 and IM-PIO, 87 (p=.04). Another study compared results in 145 women receiving ENDOMETRIN and 399 taking IM-P...

Fertility experts present the latest research at reproductive medicine meeting

... Ovidrel Administration Do Not Reflect Compromised oocyte Maturation in Donor oocyte IVF Cycles," by Drs. Nataki C. Douglas, Bo Yu, Jef...rionic gonadotropin (hCG) is used to promote final oocyte (egg cell) maturation for IVF. For ease of adminis...

Scientists Turn Skin Cells Into Motor Neurons in ALS Patients

...ar transfer (SCNT), or "therapeutic cloning," to try to accomplish this feat. That process involves removing the genetic material from a donated human oocyte and replacing it with genetic material from the skin cells of patients. The approach has been hindered by political, ethical and other obstacles. I...

New ovarian stimulation technique offers more cancer patients the chance to preserve their fertility

...metrium is inadequately developed and a fertilised oocyte would be unable to implant successfully." The r...timulation in the proliferative phase. However the oocyte quality was the same in both groups. This pilot st...d Hodgkin lymphoma to have ovarian stimulation and oocyte collection. Waiting for two weeks before they star...

SLCH Brings Infertility Specialist to Region

... Klein's areas of expertise include treatment of infertility, IVF, egg donation, endometriosis, polycystic ovarian syndrome, recurrent pregnancy loss, oocyte cryopreservation, and reproductive surgery. Health care research and information company, Castle Connolly, selected Dr. Klein as one of America's Top ...

Pacific Fertility Center Announces Breakthrough in Egg Freezing Technology

...d to deliver in 2008. PFC has been developing an oocyte vitrification program for the past two years. This... vitrification technology has been used at PFC for oocyte preservation. Vitrification works by using higher ...rification technology and not the oocytes." Five oocyte donors in their twenties were recruited and all of...

Study Spots Gene That Plays Role in Infertility

...versity, in Sweden. The report is published in the Feb. 1 issue of Science . A woman's ovaries are made up of follicles, each of which contains an oocyte (the germ cell which will eventually give rise to an egg). Over time, the majority of follicles remain dormant, acting as holding pens for immature...

MUHC in the spotlight at the 14th World Congress on In Vitro Fertilization

...7, 2007 at 8:30 a.m.) on Fertility preservation by oocyte freezing and later that same day (Monday, Sept. 17...: - Hugh Clarke - Monday 17.09.2007 at 4:00pm oocyte growth in the ovary - Asangla Ao - Monday 17.09...9.2007 at 5:00pm Epigenetic modification during oocyte growth and maturation Ultrasound technolog...
Oocyte in Medical Technology

Schering-Plough Announces Phase III Data for Sustained Follicle Stimulant

...tarting on stimulation day 5, all patients were scheduled to receive 0.25mg gonadotropin-releasing hormone (GnRH) antagonist until triggering of final oocyte maturation by a urinary human chorionic gonadotropin (hCG). The primary endpoint was ongoing pregnancy rate assessed at 10 weeks or more after embryo ...

Embryo Viability Studies Support Utility of Novel, Metabolomic Profiling Technology

...cantly greater than that achieved by morphology. oocyte Profiling Predicts Embryo Viability In a second study, "Metabolomic profile of human oocyte is predictive to embryo development and viability,...tabolomic profiling from spent culture media of an oocyte is able to predict embryo development at Day 3 and...

Bay Area Women Sought for Egg Freezing Study

... nine months for the resulting pregnancy follow-up). There is no cost to any enrolled patients for their treatment in the course of this study. Human oocyte cryopreservation or egg freezing has been investigated since the 1980's and has been used experimentally in certain IVF populations, in women who are ...

Ferring Reports on ENDOMETRIN Presentations at Pacific Coast Reproductive Society Annual Meeting

...was done for approximately one third of the patients (n=777). On the day of oocyte retrieval, patients were randomized to ENDOMETRIN 100 mg twice daily, ENDOM... the mucous membrane lining the uterus. The corpus luteum, formed after the oocyte is released, secretes progesterone to induce secretory transformation of th...
Oocyte in Medical Products

Progesterone EIA Test

Description:... uterine endometrium into secretory endometrium [3]. These functions include preparation of the uterine endometrium for implantation of the fertilized oocyte and maintenance of the endometrium during pregnancy. Progesterone has multiple other actions in female reproductive physiology, including participatio...
Company:Diagnostic Systems Laboratories, Inc.

Progesterone RIA Test

Description:... uterine endometrium into secretory endometrium [3]. These functions include preparation of the uterine endometrium for implantation of the fertilized oocyte and maintenance of the endometrium during pregnancy. Progesterone has multiple other actions in female reproductive physiology, including participatio...
Company:Diagnostic Systems Laboratories, Inc.
Oocyte in Biological News

Ovarian transplantation: New technique gives greatly improved results in this delicate operation

... St. Louis Infertility Centre, St. Louis, Missouri, USA, said that freezing tissue by the vitrification method, which avoids ice formation, meant that oocyte (egg) viability was almost identical with that seen in fresh oocytes. Dr. Silber and colleagues used standard viability testing with fluorescent mi...

Who goes abroad for fertility treatment and why?

...rmation already gathered by patient support groups and reported in the media. For example, Spain and the Czech Republic are popular destinations for oocyte donation; Swedes travel to Denmark for insemination, and French to Belgium. "It has also enabled us to have concrete proof of the large numbers...

ESHRE launches international study of polar body screening

...can be completed within a time period that allows for fresh transfer, as well as to ensure the reliable identification of the chromosomal status of an oocyte in at least 90% of polar body biopsy attempts." The two centres chosen for the pilot study have considerable experience in the field of polar body b...

Universitat Autonoma de Barcelona researchers first to clone mice in Spain

...rs seem to contribute to an increase in levels of gene expression, which would favour the reprogramming of the somatic cell nucleus transferred to the oocyte cytoplasm. Its use in nuclear transfer processes however is very recent. It was first used two years ago and research until now has focused on trichos...

Animal eggs not suitable substitutes to produce stem cells

...ferentiated to become any type of somatic cell and used for cell or tissue repair or placement therapy. This extensive reprogramming requires that the oocyte turn on, or up-regulate a large number of genes in the donor nucleus. Although previous reports have documented the formation of cloned embryos u...

December 2008 highlights from Biology of Reproduction

...ollicles. If follicles fail to form, the result is oocyte demise, yet oocytes are also essential for follicu...t. Several factors key to follicular formation and oocyte survival have been discovered recently, such as FI...actor 2) is crucial for follicular development and oocyte survival. Although some primordial follicles appea...

Rong Li Lab probes mechanism of asymmetry in meiotic cell division

...a protein called formin-2. This protein allows the oocyte to retain the majority of the cytoplasm a require...birth defects are often related to problems during oocyte meiotic cell divisions," said Rong Li, Ph.D., Inve...ure in the chromosome movement will lead to failed oocyte maturation and infertility. These findings provide...

IVF does not increase risk of developmental disorders in children

...ovaries are stimulated with hormones to produce multiple oocytes (egg cells)) and 57 singletons born following IVF/ICSI in a modified natural cycle of oocyte production, where the one egg cell which develops naturally is utilised. In this latter method, the need for hormonal medication is much reduced, alth...

Stowers Institute's Hawley Lab identifies factors responsible for restart of meiotic cycle

...g-dormant egg, allowing for production of a mature oocyte ready for fertilization. The findings appear in th... by the Hawley Lab in this work. In the fruit fly, oocyte development is arrested for 3-4 days at exactly th...se it raises the question of just how the sleeping oocyte is reawakened. The Hawley Lab addressed this quest...

A unique arrangement for egg cell division

...sion of its progenitor cell, the oocyte. Unlike other cells in the body, an oocyte does not divide equally to produce two identical daughter cells. Instead, i...h themselves to the chromosomes, separate them and pull one half out of the oocyte into a small polar body that is later discarded. Microtubule spindles are ...
Oocyte in Biological Technology

Irvine Scientific Announced Today a New Distribution Partnership With Prodimed

...ed in Neuilly en Thelle, France. Effective immediately, Irvine Scientific will be distributing Prodimed's extensive line of embryo transfer catheters, oocyte retrieval needles, and intra-uterine insemination cannulas within the U.S.A. Prodimed has a long history of developing superior products and...

Schering-Plough Announces Phase II and III Data for Corifollitropin Alfa

...n of 150 mcg corifollitropin alfa achieved similar oocyte and embryo quality compared to a daily dose of 200...ormone (GnRH) antagonist until triggering of final oocyte maturation by human chorionic gonadotropin (hCG). ...hormone (GnRH) antagonist until induction of final oocyte maturation by hCG. About 34-36 hours after inducti...

Animal Eggs Not Suitable Substitutes to Produce Stem Cells

...ferentiated to become any type of somatic cell and used for cell or tissue repair or placement therapy. This extensive reprogramming requires that the oocyte turn on, or up-regulate a large number of genes in the donor nucleus. Although previous reports have documented the formation of cloned embryos ...

EMD Serono Launches Landmark Patient Registry for Egg Freezing

...ndertaken to evaluate the safety and efficacy of oocyte cryopreservation (egg freezing) techniques ROCKL...procedures used to freeze, thaw and fertilize each oocyte and produce the transferable embryos. Additionally... Lindsay Nohr Beck is a cancer survivor who used oocyte cryopreservation before starting chemotherapy. She...

Ferring Research Infertility and Gynaecology GrAnt (FRIGGA) 2008 Winners Announced

...ty Medical Center Utrecht, The Netherlands. Research title: Assessment of oocyte quality by embryo aneuploidy rates and cumulus cell gene expression: effect...anism behind different ovarian stimulation protocols and how they influence oocyte quality. It is an honour for the value of our research to be recognised." D...

Stemagen First to Create Cloned Human Embryos From Adult Cells

...NA in the blastocyst, while one was further confirmed to be a clone by an additional mitochondrial DNA (mtDNA) analysis which revealed the presence of oocyte donor mtDNA without any oocyte donor nuclear DNA. For technical reasons, the genetic material in the remaining two blastocysts did not amplify to the ...

UW-Madison scientists guide human skin cells to embryonic state

...eators of Dolly. "These are embryonic stem cell-specific genes which we identified through a combinatorial screen," Thomson says. "Getting rid of the oocyte means that any lab with standard molecular biology can do reprogramming without difficulty to obtain oocytes." Although Thomson is encouraged that th...

National Survey Shows Most Women Are Not Satisfied With Their Progesterone Treatment

...nvenient, patient-friendly treatment, ENDOMETRIN tablets are vaginally inserted with a disposable applicator two or three times daily, from the day of oocyte retrieval to about 10 weeks of pregnancy. Results of the largest IVF trial in the world, conducted at 25 U.S. centers in 1,211 women, showed that ENDO...

Public Hearing Held for controversial anti-cloning bills

...ss of manipulating the genetic material of a human oocyte without introducing into the oocyte the genetic material from any other cell, in a way that causes the oocyte to become a human embryo). It also prohibits trans...

Your Data: Detection of Oocyte-specific Gene Expression Using Ambion's Cells-to-cDNA Kit

... Cells-to-cDNA protocol for this application. One fertilized oocyte (in 1 l of culture medium) was added to 5 l of Cell Lysis Bu... Figure 1. Gene-specific RT-PCR on a Single Mouse oocyte Using the Cells-to-cDNA Kit. 10 l of each PCR was electrophor...
Oocyte in Biological Products

11(R)-HETE from Cayman Chemical

Description:...ynthesized by the 11(R)-LOs of the sea urchin, S. purpuratus, and the fresh water hydra, H. vulgaris. The biological activity of 11(R)-HETE relates to oocyte maturation and tentacle regeneration, respectively, in these two species.11(R)-HETE is also produced when aspirin-treated recombinant COX-2 is incubat...
Company:Cayman Chemical

Nanoject II, 220 VOLT from Drummond Scientific Company

Description:...esign. Drummond developed a positive displacement motorized unit which was capable of repetitively dispensing precisely 46 nL., a volume optimized for oocyte injection. This was to be the first Nanoject. The next model offered the scientist a variable volume, ranging from 4.6 nL. to 73.6 nL. Hence, the Na...
Company:Drummond Scientific Company
Oocyte in Biological Definition

Capacitation

... spermatozoa and is required to render them competent to fertilize an oocyte . This step is a biochemical event; the sperm move normally and look mature...matozoa do not require this capacitation step and are ready to fertilize an oocyte immediately after release from the male. Historically, the term "capacita...

Morphogenesis

...s with the construction of asymmetries within the oocyte and proceeds to pattern formation along the embry...enes mRNA distributions A Drosophila oocyte is a polarized cell. The future anterior-posterior...genes that code for these differentially localized oocyte mRNAs are called maternal effect genes . They hav...

Glycoprotein

...ls as part of the adaptive immune response. Other examples of glycoproteins include: components of the zona pellucida , which surrounds the oocyte , and is important for sperm -egg interaction. Soluble glycoproteins often show a high viscosity , for example, in egg white and blood plas...

Morphogenesis

...s with the construction of asymmetries within the oocyte and proceeds to pattern formation along the embry...enes mRNA distributions A Drosophila oocyte is a polarized cell. The future anterior-posterior...genes that code for these differentially localized oocyte mRNAs are called maternal effect genes . They hav...

Zona pellucida

... The zona pellucida is a glycoprotein matrix surrounding the plasma membrane of a mammalian oocyte . This structure binds spermatozoa , and is required to initiate the acrosome reaction . The zona glycoprotein, ZP3 , is responsible for sperm b...
Oocyte in Biological Dictionary

Secondary oocyte

An oocyte , ovocyte, or rarely ocyte, is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is part of the ovary development. The germ cells produce a primordial germ cell (PGC) which becomes an... secondary ...

Primary oocyte

An oocyte , ovocyte, or rarely ocyte, is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is part of the ovary development. The germ cells produce a primordial germ cell (PGC) which becomes an... Oogonium --(Oo...

Zona pellucida

...is an extracellular matrix that ... altered mice lacking a zona pellucida due to loss of ZP3, 2-cell ... The Zona Pellucida . Pick-up of the oocyte Cumulus Complex by the Oviduct ... ZP = zona pellucida , O = oocyte, yellow = granule-filament ... THE ZONA PELLUCIDA : ... Binding of sperm...

Spermatid

... injection (ROSI) ... Since fertilization by round spermatid nucleus was first reported (Ogura and ... Round spermatid (ROS) injection into oocyte using piezo micromanipulator. ... During the transition phase, round spermatids must import these basic proteins into the nucleus. ... 3. In ...

Polytene

...tin ... posted to inversion phylogenetics polytene by cisevol to the group Drosophila ... Polytene Chromosomes of Drosophila ... fruit fly oocyte possess polytene chromosomes, chromosomes that each consist ... Polytene Chromsomes of Drosophila virilis ... Polytene chromosomes are pr...

Polar body

...ntaining little or no cytoplasm but having one of the polar body a small cell containing little cytoplasm that is produced along with the oocyte and later ... What is a polar bears body temperature? Read answer... Polar body cooling vests, MS cooling vests, cooling neck wraps, coolin...

Oviducts

...tte smoke. ... The oviduct's normal func- tion is to pick up the ovulated oocyte cumulus complexes, ... Oviducts - Definition of Oviducts at Dictiona...isruptor; ... The oviduct's normal function is to pick up the ovulated oocyte cumulus ... A) Percentage of embryos in oviducts of females exposed to 0,...

Ootid

... to become an ovum. It can be either an oogonium, oocyte and an ootid . An oocyte, in turn, can be either ...ll that results from the meiotic division of an oocyte and ... number of the ootid and spermatid? How d...differ from a ... It can be either an oogonium, oocyte and an ootid . An oocyte, in turn, can be either ...

Oogonia

... undergo MEIOSIS and give rise ... oogonium n. , pl. -nia or -niums . A cell that arises from a primordial germ cell and differentiates into an oocyte in the ovary ... Oogonia develop by mitosis. ... Development of the gonads The prenatal development of the gonads is a part of the ... Once...

Oogenesis

...ed in oogenesis ... stage 10 of oogenesis , the oocyte occupies ... Definition of oogenesis from the... posted to reproduction ovogenesis oogenesis oocyte invertebrate gigas by altotor ... posted to verteb...it Card Required. ... appearance of the Xenopus oocyte as it progresses through oogenesis . A morph seq...
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