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Latest Mitochondrial genetics Stories

2010-12-02 21:48:27

Austrian researchers have uncovered mutations throughout the mitochondrial genome that are associated with prostate cancer. An exciting aspect of the study, published by Cell Press on December 2 in the American Journal of Human Genetics, is the association of tRNA mutations with elevated levels of prostate-specific antigen (PSA) in Austrian men diagnosed with various stages of prostate cancer. Prostate cancer is among the most prevalent cancers diagnosed in the United States and Europe. The...

2010-10-28 12:38:00

--Studying the Cells' Power Plants, a Major Factor in Life Functions-- PHILADELPHIA, Oct. 28 /PRNewswire-USNewswire/ -- Douglas C. Wallace, Ph.D., a pioneer and internationally prominent scientist in the field of human mitochondrial genetics, has joined The Children's Hospital of Philadelphia to continue his investigations into the role of mitochondrial energy in health and disease. In establishing the Center of Mitochondrial and Epigenomic Medicine (CMEM) at Children's Hospital, Wallace...

2010-10-21 00:44:49

The evolution of complex life is strictly dependent on mitochondria, the tiny power stations found in all complex cells, according to a new study by Dr Nick Lane, from UCL (University College London), and Dr William Martin, from the University of Dusseldorf. "The underlying principles are universal. Energy is vital, even in the realm of evolutionary inventions," said Dr Lane, UCL Department of Genetics, Evolution and Environment. "Even aliens will need mitochondria." For 70 years scientists...

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2010-08-17 15:25:00

Rice statisticians confirm date of 'mitochondrial Eve' with new method The most robust statistical examination to date of our species' genetic links to "mitochondrial Eve" -- the maternal ancestor of all living humans -- confirms that she lived about 200,000 years ago. The Rice University study was based on a side-by-side comparison of 10 human genetic models that each aim to determine when Eve lived using a very different set of assumptions about the way humans migrated, expanded and spread...

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2010-08-08 21:01:18

Researchers at UCLA's Jonsson Comprehensive Cancer Center and the departments of Chemistry and Biochemistry and Pathology and Laboratory Medicine have uncovered a role for an essential cell protein in shuttling RNA into the mitochondria, the energy-producing "power plant" of the cell.The import of nucleus-encoded small RNAs into mitochondria is essential for the replication, transcription and translation of the mitochondrial genome, but the mechanisms that deliver RNA into mitochondria remain...

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2010-08-06 09:15:00

Why do we grow old and what can we do to stop it? This is the question asked by many, but it appears that we are now closer to an answer thanks to new research published by Monash University researcher Dr Damian Dowling. According to the research published in the August edition of the prestigious journal, The American Naturalist, a small set of genes in mitochondria (a membrane-enclosed organelle found in most eukaryotic cells), passed only from mothers to offspring, plays a more dynamic role...

2010-06-30 12:30:33

The initial peopling of North America from Asia occurred approximately 15,000-18,000 years ago, however estimations of the genetic diversity of the first settlers have remained inaccurate. In a report published June 29 in Genome Research, researchers have found that the diversity of the first Americans has been significantly underestimated, underscoring the importance of comprehensive sampling for accurate analysis of human migrations. Substantial evidence suggests that humans first crossed...

2010-06-07 14:07:55

A lesson from flashy Central American warblers Modern evolutionary systematists often use molecular methods, such like mitochondrial DNA analysis, to differentiate between species and subspecies. These molecular methods are a flashy symbol of modern science cleverly exploited by media to draw interest of public and by laboratory scientists to draw attention of government funding agencies. However, current research indicates that the picture painted by these methods may be false, and only a...

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2010-04-16 08:22:16

Finds that cells without mitochondrial fusion have less mtDNA, more mutations in their mtDNA, and less ability to tolerate those mutations A typical human cell contains hundreds of mitochondria"”energy-producing organelles"”that continually fuse and divide. Relatively little is known, however, about why mitochondria undergo this behavior. In a paper published in the April 16 issue of the journal Cell, a team of researchers"”led by scientists at the California Institute of...

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2010-02-18 07:45:00

Ancient European aurochs that have been extinct since the 17th century are having their DNA analyzed by scientists, after bone samples were found in a cave in England, BBC News reported. Mitochondrial DNA, passed down from a mother to her offspring, was confirmed in the DNA analysis of the wild cattle's bone samples. It was the first mitochondrial genome sequence found in an ancient specimen. The analysis took place at the University College Dublin's Animal Genomics Laboratory and Conway...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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