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Sequencing the Unborn

OSU ChemE Re:What about genomic testing before marriage/mati (146 comments)

They took the blood from the mother after she was pregnant, when there was fetal DNA in her bloodstream and are essentially doing a 'process of elimination' among the fetus, mother, and father. So while you could do a pre-conception screen, and it may indicate probabilities for genetic disorders or diseases with a genetic component, it wouldn't be the same thing as in TFA.

more than 2 years ago

Exercise and Caffeine May Activate Metabolic Genes

OSU ChemE Re:Lamark was right after all (148 comments)

Guess I underplayed it too much. Personally, I'd say Lamarckianism is complete trash but, as you said, he happened to throw a dart and hit something that bore a vague resemblance to reality.

more than 2 years ago

Exercise and Caffeine May Activate Metabolic Genes

OSU ChemE Re:Lamark was right after all (148 comments)

That would be a stretch. More like he wasn't completely wrong, in that epigenetics and methylation can be passed along to offspring. But even then, this article has nothing to do with that, considering changes in the methylation of genes in leg muscles would have no effect on the genes in zygotes.

more than 2 years ago

Exercise and Caffeine May Activate Metabolic Genes

OSU ChemE Re:OK, but.... (148 comments)

IANAB (biochemist) but based on the article, methylation of a gene generally reduces its activity. In this case, exercising, forcing contractions in cultured cells, or near lethal does of caffeine in cell cultures resulted in less methylation on some genes involved in energy metabolism, presumably increasing how much they are expressed. The article does note that these genes may still be expressed when methylated.

Or if that's still unreadable, exercise changes how much some genes are active in muscle cells.

more than 2 years ago

Making Fuel With Newspapers and Bacteria

OSU ChemE Re:Huh? (185 comments)

Yes, cellulose is a polymer of simple sugars. However most organisms lack the enzymes to break the chain up into its individual units. Ruminants and termites have symbiotic bacteria that digest it for them, and some species of fungus can break down cellulose (think mushrooms on a fallen tree) but as it stands, using cellulosic feedstocks require breaking up the chain via enzymes (expensive) or acids (nasty) so that bacteria can utilize it. And yes, newspaper does burn quite well, but I'd like to see you stuff it in your gas tank.

about 3 years ago

National Satiety Alert System should be set at ...

OSU ChemE You got me (272 comments)

And apparently quite a few others as well. Even the poll questions are TL;DR on /.

more than 4 years ago

Best kind of engineering:

OSU ChemE Chemical (491 comments)

Of course. Who do you think makes the food, drugs, and booze?

more than 5 years ago


OSU ChemE hasn't submitted any stories.




OSU ChemE OSU ChemE writes  |  more than 7 years ago I finally took the extra step to post and moderate and such on /. after mostly just lurking for several years. Unfortunately, I only post when I have something to add to the discussion, and that's usually only on science related posts, so we'll see how active I really am.

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