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:1/22/2015)... Inc. , a market leader of iris-based identity authentication solutions, ... the new role of Senior Vice President of Mobile and ... platforms and wearable solutions for EyeLock,s technologies. Gerber brings more ... industry to his role at EyeLock, with expertise in human ...
(Date:12/22/2014)... Dec. 22, 2014  The 2014 Holiday Season may be ... Market Intelligence reports that the long anticipated floodgates for ... intensifying demand for smart phones, tablets, and wearable mobile ... of 2.5 billion users with nearly 4.8 billion biometric ...
(Date:12/17/2014)... 2014 Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ) ... S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis" ... http://photos.prnewswire.com/prnh/20130307/600769 Based on a totally ... for the first time a fingerprint sensor in its ...
Breaking Biology News(10 mins):EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 2First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... in molecular targeting, translational cancer research and cancer ... 17,000 scientists from around the world gather at ... the 2008 Annual Meeting of the American Association ... the meeting will include late-breaking clinical trial findings ...
... plant withers unproductively or thrives in salty conditions may ... mechanism that controls salt tolerance has been found in ... collaborating with an international team. Complex-N-glycan, a ... previously thought to have no helpful function for plant ...
... A. Strobel, Professor of Molecular Biophysics and Biochemistry, ... Award. The award is given by American ... outstanding scientific contributions made by young researchers early ... award lecture, titled Three Views of RNA Catalysis: ...
Cached Biology News:AACR annual meeting showcases developments in understanding and targeting cancers 2AACR annual meeting showcases developments in understanding and targeting cancers 3Salt-tolerant gene found in simple plant nothing to sneeze at 2Yale University's Strobel recognized for work on RNA 2
(Date:1/22/2015)... January 22, 2015 Pipette.com has added ... to their comprehensive portfolio of Eppendorf products. , The ... purchase a Centrifuge 5424/5424 R and receive the following:, ... Eppendorf Research plus or Eppendorf Reference 2 , ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Selexis SA, ... mammalian Research Cell Banks (RCBs) used for drug discovery ... Cell Banks will include Next-Generation Sequencing (NGS) ... architecture de-risks biologic manufacturing by ensuring the integrity of ...
(Date:1/22/2015)... Jan. 22. 2015  Varian Medical Systems (NYSE: VAR ... honored for its commitment to sustainability with inclusion on a ... the highest ranked healthcare equipment company among the Corporate Knights ... World Economic Forum at Davos, Switzerland . ...
(Date:12/24/2014)... 2014  United Therapeutics Corporation (NASDAQ: UTHR ) ... ) has submitted a pre-market approval application to the ... of Medtronic,s SynchroMed ® II implantable drug infusion ... United Therapeutics, Remodulin ® (treprostinil) Injection delivered intravenously ...
Breaking Biology Technology:Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2Varian Honored Among World's 100 Most Sustainable Corporations 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4
... AKRON, Ohio , June 16 On Wednesday, June 23 ... promises to inspire renewed hope for new jobs in Ohio . ... will share their insight on innovation, global commerce and the new skills needed ... www.ohio.com/jobgrowth . , , , ...
... and SAN DIEGO , June 16 ... Biosciences, Inc. (Nasdaq: NBIX ) today announced that ... and commercialize elagolix for the treatment of endometriosis-related pain. ... antagonist, which has recently completed a phase IIb study ...
... ... in a new denture retention system procedure that can add 20% profit to a dental practice. ... (PRWEB) June 16, 2010 -- The ... new denture retention system procedure that can add 20% profit to a dental practice the ...
Cached Biology Technology:Free Web Cast On Fueling Ohio's New Job Growth 2Abbott and Neurocrine Announce Global Agreement to Develop and Commercialize Elagolix for the Treatment of Endometriosis 2Abbott and Neurocrine Announce Global Agreement to Develop and Commercialize Elagolix for the Treatment of Endometriosis 3Abbott and Neurocrine Announce Global Agreement to Develop and Commercialize Elagolix for the Treatment of Endometriosis 4Abbott and Neurocrine Announce Global Agreement to Develop and Commercialize Elagolix for the Treatment of Endometriosis 5Summit Dental Institute Offers A Hands-On One-Day Imtec MDI Mini Dental Implant Certification Course For Dentists 2Summit Dental Institute Offers A Hands-On One-Day Imtec MDI Mini Dental Implant Certification Course For Dentists 3Summit Dental Institute Offers A Hands-On One-Day Imtec MDI Mini Dental Implant Certification Course For Dentists 4
... This special concentrated jetSI 10 nM is ... into mouse brain as described in: Z. ... C. Giovannangeli, J.-P. Behr, and B.-A. Demeneix. ... expression in the mouse brain at picomolar ...
... jetSI-ENDO-FluoF is a ... nm; emission at 520 nm), ... These reagents are used to ... investigate the intracellular delivery and ...
... R&D Systems Cell and Tissue Staining ... in a broad range of histological and ... with primary IgG antibodies manufactured by either ... detection is based on the formation of ...
... covers a wide range of hands-on techniques ... researchers in all areas of protein chemistry ... books preface illustrates just how valuable this ... The chapters introduce the theoretical background of ...
Biology Products: