Navigation Links
Important fertility mechanism discovered
Date:4/24/2013

stigating. The protease ovastacin is stored in vesicles within the egg cell and when the first sperm penetrates the ovum, the protease is explosively discharged into the gap between the egg cell and the zona pellucida in what is known as the cortical reaction.

However, small amounts of ovastacin continually seep from unfertilized egg cells and this would cause the zona to harden before the first sperm can penetrate. "It is the role of fetuin-B to ensure that these constantly escaping small quantities of ovastacin are inactivated so that oocytes can be fertilized," Stcker added. "However, once a sperm has penetrated an egg cell, the cortical reaction will be unleashed and the amount of ovastacin will overwhelm the inhibition capacity of fetuin-B and initiate the hardening process."

This is the first time that it has been shown that premature hardening of the zona pellucida can be a cause of infertility. It is thus possible that this could represent the basis for the development of future forms of infertility treatment.


'/>"/>

Contact: Dr. Walter Stöcker
stoecker@uni-mainz.de
49-613-139-24273
Johannes Gutenberg Universitaet Mainz
Source:Eurekalert

Page: 1 2

Related biology news :

1. An important discovery in breast cancer by IRCM researchers
2. Environmental enrichment important factor impacting cell transplantation and brain repair
3. Researchers discover gateway in nucleus has a second important job no one noticed before
4. Stem cell source an important factor, impacting ability to treat myocardial infarction
5. Could the timing of when you eat, be just as important as what you eat?
6. 2 new studies show why biodiversity is important for pollination services in California almond
7. Eliminating useless information important to learning, making new memories
8. Joslin researchers identify important factor in fat storage and energy metabolism
9. Bering Sea study finds prey density more important to predators than biomass
10. The first genome sequence of Chinese plum provides important resource for fruit improvement
11. Discovery of Africa moth species important for agriculture, controlling invasive plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2015)... DALLAS , June 25, 2015 ... report "Fingerprint Sensors Market by Type (Swipe & Area), Technology, ... (Mobile, Government, Healthcare, Commercial Security & Others) & ... published by marketsandmarkets, the said market is expected ... CAGR of 17.1%. Browse 76 ...
(Date:6/24/2015)... , June 24, 2015 This report ... over the next six years. It contains an analysis ... industry, along with their impact from the short, medium, ... also discusses the industry, market, and technology trends that ... the need of concerned authorities to efficiently manage the ...
(Date:6/23/2015)... , June 23, 2015   MedNet Solutions ... supports the entire spectrum of clinical research, is ... ™ , the company,s intuitive, flexible and ... a Silver 2015 Stevie® Award by the ... & Services Website category.  The American Business Awards ...
Breaking Biology News(10 mins):Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2
... diverse, densely packed human population, head for New York,s ... people, then Southwestern Florida is your best bet. This ... Strand Preserve State Park not far from the Everglades ... a census led by Robert Lcking, collections manager and ...
... potato salad? Young adults who frequently attend religious activities ... middle age as young adults with no religious involvement, ... first longitudinal study to examine the development of obesity ... "We don,t know why frequent religious participation is associated ...
... Gentel Biosciences, a leader in proteomics tools, and Van ... today the granting of U.S. Patent 7,838,634 for a new ... on the surface of an antibody array slide. Gentel ... 2006. According to Brian H. Haab, Ph.D., head of ...
Cached Biology News:Study finds remarkable diversity of lichen species in Florida state park 2Study finds remarkable diversity of lichen species in Florida state park 3Religious young adults become obese by middle age 2Religious young adults become obese by middle age 3New technology to improve early detection and prognosis of cancer 2
(Date:7/2/2015)... , July 2, 2015 College of ... Eakins are gaining invaluable real-world experiences while serving ... this summer. The students will be working ... Wereszczynski,s research group at IIT. The internship came ... Tom Carter , Physics; Dr. Kathy Finan , ...
(Date:7/1/2015)... CA (PRWEB) , ... July 01, 2015 , ... It ... brain injury (TBI) using single photon emission computed tomography (SPECT) according to ... The study, which examined over 20,000 brain scans and is believed to be the ...
(Date:7/1/2015)... 2015   Neuraltus Pharmaceuticals, Inc. , a privately-held ... drugs to treat neurodegenerative diseases such as amyotrophic ... G. Miller , M.D., Director of the Forbes Norris ... Medical Center in San Francisco, has been awarded a ... to help fund a Phase 2 clinical study ...
(Date:7/1/2015)... ... 2015 , ... Apex Therapeutics announced today that company CEO, David Broecker provided ... , The presentation took place on Tuesday, June 16 and provided an update on ... for the treatment of pancreatic cancer. A copy of the company overview can ...
Breaking Biology Technology:COD Students Participate in Prestigious Summer Internships 2Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 2Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 3Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 4Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 2Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 3Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 4Apex Therapeutics Presented Company Overview at This Year’s BIO International Convention in Philadelphia, PA 2
... 29, 2011 Sundberg , a leading provider of ... and HVAC parts, is kicking off its ... of a new headquarters facility and two state-of-the-art warehouses. ... development of two world-class, logistically centric warehouses: a 110,000-square-foot facility ...
... BELGRADE, Mont., Nov. 28, 2011   Bacterin International Holdings, ... leader in the development of revolutionary bone graft material ... agreement with Jeil Medical Corporation for distribution in the ... The LeForte System is composed of orthopedic implants used ...
... 2011  Candelis announced today that it has reached a ... whereby Candelis, ASTRA cloud-hosted suite of services will provide ... and studies to patients, Microsoft HealthVault accounts upon their ... health application platform that lets consumers gather, store and ...
Cached Biology Technology:Sundberg Kicks Off National Expansion With Openings of New Headquarters, Logistically Centric Mega Warehouses 2Bacterin Signs Distribution Agreement with Jeil for 'LeForte Craniomaxillofacial System' 2Bacterin Signs Distribution Agreement with Jeil for 'LeForte Craniomaxillofacial System' 3Bacterin Signs Distribution Agreement with Jeil for 'LeForte Craniomaxillofacial System' 4Candelis and Microsoft Team Up to Empower Patients 2Candelis and Microsoft Team Up to Empower Patients 3
Fingerprinting II cluster analysis is an optional module that adds dendrogram and phylogenetic tree construction, cluster and group significance, and congruence of techniques functions to the Fingerp...
... Lines ,High Quality, Functionally-Validated, Ion Channel Cell ... for having a critical role in nerve ... key function in pain, CNS and the ... been investigated in therapeutic areas, such as ...
... Ideal for hand-held applications or for use ... with a hand-held eight-port disposable manifold provides ... a multi-channel pipette. The StatMatic II can ... sizes and can completely fill a microplate ...
...
Biology Products: