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:10/31/2014)... synchrotron source that emits over a wide part of ... is currently being built in Lund, Sweden. The MAX ... the team putting together its component parts in a ... circumference of just a few hundred metres. Nevertheless, if ... new class of experiments that require source brightness and ...
(Date:10/31/2014)... steps involved in programmed cell death, offering new targets ... neurodegenerative diseases. , The research teams from the ... the three-dimensional structure of a key cell death protein ... it causes cell death. Their studies were published in ... Proceedings of the National Academy of Sciences . ...
(Date:10/30/2014)... a $1.04 million grant from the U.S. Army ... osteoarthritis using a patient,s own stem cells, spurred ... polymers., Liping Tang, a bioengineering professor and interim ... is primarily focused on helping soldiers who are ... if we inject microscaffolding that we,ve developed into ...
Breaking Biology News(10 mins):A new generation of storage -- ring 2A matter of life and death: Cell death proteins key to fighting disease 2UTA researcher uses microscaffolding injections to mend cartilage, prevent osteoarthritis 2
... available in French . , A new ... University reveals that ghrelin - a stomach hormone, acts on ... food related cues and eating for pleasure. This study, ... critical to advance understanding and treating obesity, a condition affecting ...
... There are two ways in which cooperation is the theme ... Mary Anne Alliegro, scientists at the Marine Biological Laboratorys (MBL) ... the papers acknowledgements, where the Alliegros thank those who helped ... State University (LSU) in New Orleans and their lives ...
... N.Y., May 5 bioMETRX Inc., (OTC,Bulletin Board: ... products, today announced that it has closed an ... group of previous angel,accredited investors., "We have ... team.,The company has demonstrated to us the ability ...
Cached Biology News:Hunger hormone: Makes food more attractive 2The cooperative view: New evidence suggests a symbiogenetic origin for the centrosome 2bioMETRX, Inc. Closes Angel Round of Funding 2
(Date:10/30/2014)... (PRWEB) October 30, 2014 2014 ... HCL Industry” is a professional and in-depth research ... provides basic Naltrexone HCL information, including its definition, ... as industry overview. This research covers the international ... as global industry analysis covering macroeconomic environment & ...
(Date:10/30/2014)... 2014 SoundConnect , an ... Office 365 end users the key to turning ... system by adding voice enablement and hybrid audio ... Online, a communication tool that includes presence, instant ... voice, O365 becomes a comprehensive unified communications solution. ...
(Date:10/30/2014)... (PRWEB) October 30, 2014 James Sherley says ... in adult tissue stem cell technology since his days as ... in Philadelphia in the late 1990’s. Sherley founded the ... The company holds all the intellectual property developed in Sherley’s ... at the Massachusetts Institute of Technology (MIT), and more recently ...
(Date:10/30/2014)... 2014 Whitehouse Laboratories has formally announced ... Testing and Package Test Capacity. Responding to growing demands ... dramatic increase in environmental chamber storage space that will ... aging samples to be securely held on site at ... expenditure has already taken place with the recent completion ...
Breaking Biology Technology:Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 2Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 3SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 2SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 2Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 3
... CRANBURY, N.J., Feb. 18, 2011 Palatin Technologies, Inc. (NYSE ... and webcast on February 24, 2011 at 11:00 a.m. Eastern ... results and plans for its programs under development.   ... Call / Webcast Q2 Fiscal Year 2011 Conference Call-Live ...
... have heard of virtual keyboards controlled by thought, brain-powered ... be downright tiring, a fact that prevents the technology ... among others. Professor Jos del R. Milln and his ... in Switzerland have a solution: engineer the system so ...
... Pharmaceuticals, Inc. (Nasdaq: SVNT ) today announced that ... at the Citi 2011 Global Healthcare Conference on Tuesday, March ... be held at the New York Hilton in New York, ... can be accessed through the investor relations section of the ...
Cached Biology Technology:Taking brain-computer interfaces to the next phase 2
... APAgene kits are designed to rapidly ... using our patented APA Technology. ... at an extraordinarily competitive price. All ... kit. The Locator Kit can be ...
Recommended for supporting the growth of anchorage-dependent cells including human and mouse stromal cells, mesenchymal cells and cell lines....
... This CLS number is a ... easily match Cornings product number. ... please order under the old ... customer service for assistance. ID ...
Extremely high efficiency packaging extracts useful for transfecting our EpiFOS™ or CopyControl™ Fosmids, or any DNA vector with cos sites. A tremendous value when conpared to the competition...
Biology Products: