Saturday, January 28, 2017

MORE FUN FACTS ABOUT BIOLOGY


Linda and Amanda
About 25 years ago


A while back I posted a blog called “Fun Facts about Biology”.  Here it is:


The idea was to alert all you avid biology fans of articles I had stumbled upon which didn’t really merit a blog entry of their own but were too interesting to simply delete.  For a time this worked (I got lots of hits – I can tell!), but lately, not so much.  Therefore I have resolved to stir the pot with a new blog: new name, same purpose.  I begin with an article from the NYTimes which I consider fascinating.

If you think about it in a deeply twisted way you will realize that there is a lot of similarity between a human being and an ant hill.  Humans consist of a large number of “individuals” (cells), doing a lot of specialized things for the benefit of the “tribe” (an individual person).  Same goes for ants; fewer individuals, fewer specific functions, but a similar cooperation for the good of the “tribe”.  Termite mounds and bee hives also qualify.  Thus, the main difference between you and a termite mound is that your cells don’t wander about eating wood.  Ponder that for a while.

Well, it transpires that this guy in NYC is using a species of ant to study – not humans, but the origin of societies.  Not just insect societies it seems, but societies in general, from termites to the TEA party and “Babes for Bernie", if such exists.  He and his minions have just published a flurry of scholarly papers on the subject which, needless to say, I have not read.  Hence the NYTimes article, below.

The principal scientist here is named Daniel Kronauer.  Dr. Kronauer works for Rockefeller University and runs what appears to be an unusually well-funded lab.  In keeping with the time-honored tradition of NYTimes essayists of tossing in irrelevant human-interest information we are informed that Dr. Kronauer was born and raised in Germany, is 40, tall, sandy-haired, and is married to a dentist.  Important stuff:  I can hear their bedtime conversation. He: "Oh God, what a day - I stumbled and squashed one of my most important ants!".  She: "Well, that's too bad.  I didn't want to tell you, but today I yanked the wrong molar out of a patient, who happens to be a trial lawyer."

The subject of this experiment is an ant, Cerapachus birosi, described as a “weedy clonal raider”.  “Weedy” apparently indicates that C. birosi, like a garden weed, can thrive in disparate environments.  “Raider” clearly indicates that they raid other ant colonies for food.  The really interesting adjective here is “clonal”.  All these scurrying little nasty's are clones; that is to say, the all have identical DNA.  And – I am truly astonished – this comes about because they are born parthenogenetically!  No sperm involved!  No males AT ALL!  Every single individual ant is female!  (Don’t let this get out, for God’s sake.)

Well, so far what the Rockefeller folks have been doing is to mess around with the DNA of individual ants to see how behavior is affected.  Some very interesting results have been obtained, and I will leave you with the pleasure of reading about them for yourself.  There is a lot more of interest in this article; I urge you to read it.

One last fun thing:  It is an old essayist’s trick to start with some unusual statement and then loop back to it at the end; I do it myself, when I can figure out how.  The first paragraph refers to Dr. Kronauer’s lifelong penchant for flipping over rocks to see what’s crawling around underneath.  The last sentence reads “When the ant police come knocking, there’s no rock big enough to hide you”


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The incidence of colorectal cancer in young people  is increasing at a brisk pace, and nobody knows why, or what to do about it.  This isn’t exactly a “fun fact”, but it’s interesting

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Here is an interesting article on “regenerative medicine”.  Crudely, what is meant by RM is the process of growing tissue in the lab, to be injected or grafted (or something) into or onto a patient, to replace something he/she lacks.  The example used here is AMD, short for age-related macular degeneration (a topic of some interest to my fellow geezers and I).  Short story shorter: it shows promise, but has problems.

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 Why do people demand vitamin D supplements?  Beats me.
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How long you live depends on where you live.

https://directorsblog.nih.gov/2017/05/16/widening-gap-in-u-s-life-expectancy/
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This one is really interesting: how cowbirds learn to be cowbirds

http://www.audubon.org/news/scientists-pinpoint-secret-password-unlocks-cowbirds-self-identity
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My brain was free-wheeling along just now through the early annals of this blog, when it ran smack on into the following Atlantic article.  You really should make time to read it.



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My daughter Karen reports this very interesting article in epigenetics

https://www.sciencealert.com/scientists-have-observed-epigenetic-memories-passed-down-for-14-generations

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Now here is something especially revolting: An ovarian tumor with teeth!

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Interesting new perspective on autism:

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Good introduction to how bio-geeks determine structure in tiny organic molecules.  New technology.

https://directorsblog.nih.gov/2018/10/30/cryo-em-method-from-powder-to-structure-in-under-a-half-hour/
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Some of this stuff is getting downright creepy!  A beating human heart, in a dish?

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I first fell in love with llamas when a big, beautiful buck spit at Linda and me in Cotopaxi Park, Ecuador.  Or was it earlier, when a blind one in the San Francisco Zoo sniffed me to make sure I wasn’t dangerous?  Well, whatever,. . . I love the beasts.

And, by the way, that’s Yah mah, not Lah mah.  Double el is y, man!

It turns out that, in addition to being cute, they are useful to medical science.  It may be that our best protection against the flu virus will turn out to be a mist made from highly-doctored llama snot!  Read all about it here:





Wednesday, January 25, 2017

THE INTERNET

Linda and her big brother, 1967


It seems as though it was just a few years ago that I first realized that there was this thing called the Internet, and that it might be useful.  Well, I investigated, dabbled – and, like an invasive kudzu vine – the Internet has taken over my life.  And here, in Borrego Springs, for the past four days, the Internet has been DOWN!  Oh, the horror.  People have been wandering about like zombies, with blank, glazed eyes, wondering what to do next.  If you lacked 4G you were totally out of luck; you might as well have been in exile in Nebraska.  But now, thanks to a team of intrepid engineers who braved the thick snow cover on Toro Peak, the Internet is back UP!  Unfortunately I have forgotten what I wanted to report.  I know it had to do with diet.  There seems to be some evidence that dark toast and roasted potatoes furnish a chemical that, when stuffed down the gullets of mice in prodigious quantities, increase the probability of getting cancer.  Why?  Who knows?  Official health authority’s reaction seems to be something like “don’t sweat it.”  I won’t; I don’t like to eat dark brown things very much, anyway.  


Thursday, January 19, 2017

AT LAST

Linda and Butch
Early on
Good news!  At long last Fred Hutch has solved its computer problems and has put their Tributes section “up”.  Linda’s tribute was first, probably because I have been riding them cruelly for at least a year.  The problem has been that hackers had been inserting all sorts of inane commercial nonsense where it emphatically didn’t belong.  You would think that people who can insert bug DNA into human beings could swat computer hackers like bloated flies, but apparently not.
Anyway, if you want to see Linda’s new tribute page, click on
And if you want to leave a little money behind, that’s okay.


Friday, January 13, 2017

BLOGGER HIATUS ENDS IN VIOLENT RAINSTORM


Linda and her Schneider cousins
and some cheap zinfandel
Here is an article that is an appropriate comment on several cancer topics: History of the War on Cancer; the Moonshot; Mammography; and, not least, more evidence that Medicos are not Demigods, but rather normal quarrelsome human beings.  It appeared in Slate, which is somewhat given to splenetic journalism, so don’t confuse it with absolute truth.  Here are some main points, either stated explicitly or implied:
Richard Nixon is responsible for the original War on Cancer (not true)
The original War on Cancer was ill conceived (quite true)
The Moonshot, while better conceived than the War on Cancer, is damagingly over-hyped (also true)
Mammography also is over-hyped; mammography applied to younger women does not reduce mortality (unfortunately true)
We should prevent cancer, not wait until it happens and then attempt to cure it.  (Sure, but how?)
Life is complicated.  (Indisputable)

Anyway, I am safely sheltering in Borrego Springs, until April.  To greet my arrival nature threw a rainstorm at the desert.  There was even a Severe Weather Alert.  So far we have had about 0.1 inches of rain, and it appears to be clearing up.
http://www.slate.com/articles/health_and_science/medical_examiner/2017/01/john_bailar_reminded_us_of_the_value_of_evidence.html




Saturday, January 7, 2017

LAYOVER

Nova Scotia
I am at home (Bellingham) temporarily on a sort of layover between trips to Alaska and Borrego Springs.  I will be settled into my BS digs by 1/12, and shortly thereafter my usual hatch of lugubrious cancer blogs will resume.  Also, if the spirit moves me I will add to my other blog – Frivolities – which most of you have neglected shamefully.

So while I’m here I may as well check what’s new, right?  So I did, and almost wished I hadn’t.  Here, for instance is the latest from the NCI on OVCA screening.  The gist: don’t bother, it doesn’t help.


The group I used to try to help at Fred Hutch focused on discovering an early-warning biomarker for OVCA.  We failed.  I hope somebody succeeds, and soon.  Early stage OVCA is highly curable.
    
On another matter, Yahoo News was up-beat: cancer death rates overall have dropped 25% in the past few decades – the rate of decrease is fairly steady, at 1.5% per year.  Of course, much of that is merely the plucking of low-hanging fruit; about half is due to reduction in smoking, for instance.  Curious racial differences persist; for example, black men remain 47% more likely to die of cancer than white men.

As for the cancer type central to this blog, the news is not so encouraging.  OVCA is listed as one of the ten most lethal cancers, by the NCI.  Over the past 2.5 decades deaths from OVCA dropped about 11%.  That’s better than nothing, but not enough.  My beautiful wife was one of those deaths.


https://www.yahoo.com/news/cancer-death-rates-fall-prevention-184300430.html