Navigation Links
Illinois scientists link dietary DHA to male fertility
Date:1/9/2012

URBANA Who knew that male fertility depends on sperm-cell architecture? A University of Illinois study reports that a certain omega-3 fatty acid is necessary to construct the arch that turns a round, immature sperm cell into a pointy-headed super swimmer with an extra long tail.

"Normal sperm cells contain an arc-like structure called the acrosome that is critical in fertilization because it houses, organizes, and concentrates a variety of enzymes that sperm use to penetrate an egg," said Manabu Nakamura, a U of I associate professor of biochemical and molecular nutrition.

The study shows for the first time that docosahexaenoic acid (DHA) is essential in fusing the building blocks of the acrosome together. "Without DHA, this vital structure doesn't form and sperm cells don't work," said Timothy Abbott, a doctoral student who co-authored the study.

Men concerned about their fertility may wonder what foods contain DHA. Marine fish, such as salmon or tuna, are excellent sources of this omega-3 fatty acid.

The scientists became intrigued with DHA's role in creating healthy sperm when they experimented with "knockout" mice that lack a gene essential to its synthesis. "We looked at sperm count, shape, and motility, and tested the breeding success rate. The male mice that lacked DHA were basically infertile," Nakamura said.

But when DHA was introduced into the mice's diet, fertility was completely restored. "It was very striking. When we fed the mice DHA, all these abnormalities were prevented," he said.

The scientists then used confocal laser scanning (3D) microscopy to look at thin slices of tissue in progressive stages of a sperm cell's development. By labeling enzymes with fluorescence, they could track their location in a cell.

"We could see that the acrosome is constructed when small vesicles containing enzymes fuse together in an arc. But that fusion doesn't happen without DHA," he said.

<
'/>"/>
Contact: Phyllis Picklesimer
p-pickle@illinois.edu
217-244-2827
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert

Page: 1 2

Related biology news :

1. NSF funds new Center for the Physics of Living Cells at Illinois
2. NSF funds research at Illinois on sustainable biofuels infrastructure
3. Human aspects of climate change to be focus of conference at Illinois
4. Illinois Soil Nitrogen Test measures microbial nitrogen
5. Illinois pumpkin fields face cunning opponent
6. Illinois researchers use pyrosequencing to study canine intestinal bacteria
7. Illinois scientists promote soy by currying favor with Indian taste buds
8. Grasses have potential as alternate ethanol crop, Illinois study finds
9. University of Illinois researchers discover potential new virus in switchgrass
10. Illinois study: Ginseng just got better -- not as bitter
11. New book on 100 years of Illinois birds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/10/2014)... 2014 Research and Markets ( ... "Biometrics Market in Japan 2014-2018" report ... http://photos.prnewswire.com/prnh/20130307/600769 The integration of biometrics ... banking and upgradation of the driver,s license is ... market. Besides the aforementioned projects, biometrics is being ...
(Date:12/5/2014)... , Dec. 4, 2014  Tute Genomics, a leader ... million in Series A1 funding led by UK-based Eurovestech. ... participated in the investment round. "We are ... community adopts next-generation sequencing and seeks new approaches for ... Reid Robison , MD MBA, and CEO of Tute ...
(Date:12/3/2014)... Dec. 2, 2014 As part of our ... Technologies is pleased to announce the release of a ... to collect the workforce data that they need. ... been left by existing readers. Many such devices have ... and modern technology. Older models force users to navigate ...
Breaking Biology News(10 mins):Biometrics Market in Japan 2014-2018: Key Vendors are DDS, Fujitsu, Hitachi and NEC 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3Inception Technologies to Release New Biometric Reader 2
... warm due to climate change, water layers will mix less ... of the atmosphere but researchers say it,s still unclear ... it. The forces at work are enormous and the ... to be published Friday in the journal Science . ...
... FLA.Florida Institute of Technology researchers are taking an ... reef-building corals. Led by Robert van Woesik, professor ... events to gain insight into how these corals ... found strong relationships between past regional extinction events ...
... research from Western University, Canada, has demonstrated the ... cases where patients have been resuscitated after Sudden ... arrhythmias (abnormal heartbeat rhythm). Cardiologist Dr. James ... of Medicine & Dentistry, found CMR is a ...
Cached Biology News:Ocean microbe communities changing, but long-term environmental impact is unclear 2Ocean microbe communities changing, but long-term environmental impact is unclear 3Coral survival's past is key to its future 2Cardiac MRI shown to improve diagnosis in patients with life-threatening arrhythmias 2
(Date:12/17/2014)... Houston, TX (PRWEB) December 17, 2014 ... marketing and administration for Stoller Group. In this position, ... Stoller Group, on administrative matters, develop marketing strategy and ... and services. , “Achim has tremendous knowledge and ... president of Stoller Group. “His experience and innovative thinking ...
(Date:12/17/2014)... (PRWEB) December 17, 2014 This ... Global Quartz Tubing industry. For an overview analysis, ... classification, application, industry chain structure, industry overview, policy ... quartz tubing industry has witnessed rapid development ... number of acquisitions. This report mentions quartz tubing ...
(Date:12/17/2014)... CA (PRWEB) December 17, 2014 Audacity, ... activation agency and member of the Huntsworth Health Group, ... to its executive team. In her role, Gonzales will ... , “We are incredibly honored to welcome a talent ... Chief and CEO, Gaëtan Fraikin. “She is a proven ...
(Date:12/17/2014)... -- CASI Pharmaceuticals, Inc. (Nasdaq: CASI ), ... commercialization of innovative therapeutics addressing cancer and other unmet ... commercial focus on China , today ... meeting with the U.S. Food and Drug Administration (FDA) ... 2015.  During this meeting the Company will seek guidance ...
Breaking Biology Technology:Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 22020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2Audacity Welcomes Healthcare Communications Expert Jamie Gonzales as Senior Vice President of Client Services 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 3CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 4CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 5
... of forest industry,stakeholders from Eastern Canada and ... opportunities within the forestry sector across the,region., ... comprised of regional government,industry, federal and regional ... come together to better understand what,opportunities may ...
... BRUNSWICK, N.J., July 7 Senesco,Technologies, Inc. ("Senesco" ... announced,that the Company recently closed on the remaining ... YA Global Investments, LP ("YA,Global") and Stanford Venture ... entire amount of the milestone dependent $10 million,private ...
... Pharmaceuticals,Inc. ("Angiotech") (NASDAQ: ANPI , TSX: ANP), ... announced the commencement,of a cash tender offer of ... amount that will result in an aggregate purchase ... Tender Premiums" listed in the,table below) of $165 ...
Cached Biology Technology:Atlantica BioEnergy Task Force Unveiled 2Senesco Technologies Closes Remaining $3.0 Million of Previously Announced Financing 2Senesco Technologies Closes Remaining $3.0 Million of Previously Announced Financing 3Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 2Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 3Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 4Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 5Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 6Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 7Angiotech To Commence Cash Tender Offer for Senior Floating Rate Notes Due 2013 and 7.75% Senior Subordinated Notes Due 2014 8
...
...
... The newest member of Wyatt Technology's ... fits inside of your high temperature chromatograph ... scattering data from thermoplastic polymers. The HTmD ... any Waters 150C, PL220C or Alliance 2000 ...
...
Biology Products: