Navigation Links
Going with the flow
Date:8/28/2011

ward the spindle," says Yi. When he treated the oocytes with jasplakinolide, an actin filament-stabilizing drug, actin flow in the cells' interior almost immediately ceased.

"The actin flow drives cytoplasmic streaming away from the cortical cap region along the cell periphery. When it arrives at the opposite pole of the oocyte, it circulates back in a pattern similar to that of the actin flow toward the spindle," says Li. A theoretical analysis by physicist and co-author Boris Rubinstein, Ph.D., a research advisor at the Stowers Institute, found that the observed cytoplasmic streaming generates pressure on the spindle and pushes it towards the cortex.

In many vertebrate species including mammals, oocytes may arrest in meiosis II for hours or even days awaiting fertilization. "During this time the asymmetric spindle position must be stably maintained," explains Li. "Maintaining spindle position under an active force could prevent slow and random drift of spindle position or orientation if the meiotic arrest is prolonged."

Loss of asymmetric positioning of the meiosis II spindle is a known cause of impaired reproductive potential in aging females and spindle position is used as a clinical index to evaluate the quality of oocytes arrested in meiosis II for in-vitro fertilization.


'/>"/>

Contact: Gina Kirchweger
gxk@stowers.org
816-806-1036
Stowers Institute for Medical Research
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. How mirror neurons allow us to learn and socialize by going through the motions in the head
2. New infant feeding and obesity research adds insight to ongoing issue
3. Lobster traps going high tech
4. Going bananas for sustainable research -- scientists create fuel from African crop waste
5. A heart healthy diet and ongoing, moderate physical activity may protect against cognitive decline
6. WPI receives $1.3 million in federal awards for ongoing research in the life sciences
7. Going green on hold: Man-made activities can affect blue haze, worlds weather
8. Ongoing human evolution could explain recent rise in certain disorders
9. Keystone Symposia awarded $1.37 million, 5-year NIH grant to fund ongoing diversity efforts
10. Going out on a (redwood tree) limb
11. Going green: New program provides vital support for plant scientists
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Going with the flow
(Date:10/22/2014)... Oct. 20, 2014 The Nano-Bio Manufacturing Consortium ... Force Research Laboratory (AFRL), has chosen a project proposed ... the University of Arizona College of Medicine – ... AzCIM project,s goal is to assess different sweat collection ... volumes of sweat under a variety of human-body conditions, ...
(Date:10/18/2014)... 19th October 2014 Psychological stress and stress-related psychiatric ... aging-related diseases, but the molecular mechanisms underlying ... may contribute to the development of targeted ... for these devastating diseases. This work is ... congress in Berlin., Now an international group ...
(Date:10/17/2014)... German . Why ... order to reproduce? And why are there two sexes anyway? ... issue of the research journal Molecular Human Reproduction ... from Bielefeld University Bielefeld has compiled this special issue on ... female to copulate with several males in quick succession – ...
Breaking Biology News(10 mins):Nano-Bio Manufacturing Consortium Selects Project Proposed by Arizona Center for Integrative Medicine to Optimize Human Performance Monitoring Techniques 2Nano-Bio Manufacturing Consortium Selects Project Proposed by Arizona Center for Integrative Medicine to Optimize Human Performance Monitoring Techniques 3Researchers find why depression and aging linked to increased disease risk 2Sperm wars 2
... free of charge for all holders of a valid ... access to the onsite press facilities, including a working ... will also be able to assist you in organising ... can register for free online at: http://www.eular.org/congress_press_registration.cfm ...
... researchers at North Carolina State University have found that ... intestinal birth defects may also inhibit the growth and ... chemical compounds created by NC State chemist Dr. Alex ... particular interest to her research: a compound that induced ...
... Indonesia has promised to become a world leader ... committed to a 26% reduction in greenhouse gas emissions ... 14% would have to come from reducing emissions from ... and other bodies are expected to raise total emission ...
Cached Biology News:Compound useful for studying birth defects may also have anti-tumor properties 2Hotspots of carbon confusion in Indonesia threaten to warm the world more quickly 2Hotspots of carbon confusion in Indonesia threaten to warm the world more quickly 3Hotspots of carbon confusion in Indonesia threaten to warm the world more quickly 4Hotspots of carbon confusion in Indonesia threaten to warm the world more quickly 5
(Date:10/19/2014)... OCTOBER 20-22, 2014: The 9th Annual ... take place at the Congress Center Basel, ... now available at http://www.abim.ch . ... from all over the globe will exchange ... products and developments on the world market. ...
(Date:10/19/2014)... 19, 2014 The Asia-Pacific Bromine ... in Asia-Pacific with analysis and forecast of revenue. ... Pacific Bromine Market report, to get an idea ... a glimpse of the segmentation in the Asia-Pacific ... and figures. , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The Asia-Pacific ... Analytics market in Asia-Pacific with analysis and forecast of ... million in 2014 to $208 million by 2019, at ... 2014 to 2019. , Browse through the TOC of ... idea of the in-depth analysis provided. It also provides ...
(Date:10/19/2014)... The Asian Orthopedic braces and support systems ... analysis and forecast of revenue. The Orthopedic braces and support ... $416.5 million by 2018, at a developing CAGR of 4.4% ... the Asian Orthopedic braces and support systems market, to get ... a glimpse of the segmentation of orthopedic braces and support ...
Breaking Biology Technology:The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 4
... is smaller in diameter than a pencil. The DISMISS® instrument ... Invasive Spine Stabilization System and will be unveiled at the Congress ... 2009. , ... Winston-Salem, NC (PRWEB) March 3, 2009 ...
... March 3 Bio-Matrix Scientific Group, Inc. (OTC ... research and development biotechnology company focused on the ... commercial cryogenic stem cell bank and processing facility ... about trends in adult stem cells published this ...
... Infectious Diseases Company Featured on March 9th ... France , and March ... ROCKVILLE, Md., March 3 Sequella, ... diseases of epidemic potential has announced that Alan Klein, Sequella Executive ...
Cached Biology Technology:VGI Announces the Launch of DISMISS Instruments for the VerteLoc™ Minimally Invasive Spine Stabilization System 2Bio-Matrix Scientific Group, Inc. Highlighted in LifeSciencesWorld.com Special Report; Stem Cell Market Projected to Exceed $8 Billion Worldwide by 2016 2Infectious Diseases Company, Sequella, to Present at Upcoming European Conferences 2
... is an evolutionarily conserved form of cell ... The central component of this process ... caspases. These enzymes participate in a ... response to pro-apoptotic signals and result in ...
... is manufactured for DNA purification from agarose ... UV light. The Purification of DNA from ... DNA-cloning work. The conventional method of visualizing ... UV light damages DNA and significantly decreases ...
...
CleanBox DNA workstation with two 254nm UV lambs & 12-hr timer, 90cm (36-inch)width, single door, 115V (w/crating)...
Biology Products: