Here is an interesting breakdown of baby boomers and their economic/technological positions (courtesy SeniorHomes.net):

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Thank you!
Vielen dank!
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Mom has been pretty much without language for five years now. Three years ago she would occasionally call out “Ken!” (Dad’s name) once or twice a week, but other than that, her speech was a non-stop running chatter of “geri geri geri fica fica fica mao mao” and the like. Mostly two syllable experiments in sound. Ah. Also, occasionally–and as far back as 2 1/2 years ago, she would respond to the declaration “I love you” with “too too too too.” We wrapped ourselves in that response–a definite sign of comprehension and reciprocity.
Today we don’t even get the “too too too.” But we do get eye contact and a nod, which is just as good as sign of comprehension.
For all the times I’ve felt a thrill at the connection still possible with Mom via language, I didn’t have a picture of how thrilling it was for her to know that she knew something until one day–about 18 months ago–when I took her to the bathroom. We’d been having a very hard time getting Mom to urinate. She’d hold it for eight, twelve,  eighteen hours. We massaged her, waited in the bathroom with her, gave her tons of liquid in hopes of getting her to release the contents of her bladder–to no avail.
One day I sat her down and begged her to go. “Mom, go potty. Let it out. Just let it out, ok?” She leaned over and made a shooing motion with her hand and repeated, “out?” I said, “yes, let it out.” She looked at the door, repeated the shooing motion (toward the door) and said “out” with the most excitement I’d seen from her in a long time. She was ecstatic at the small bit of comprehension she possessed at that moment. She knew the word “out!” She knew the word–it’s meaning–and it gave her significance.
I suppose it was akin to the feeling Helen Keller had at the comprehension of the word “water.” It opened up the world around her; gave her instant availability to connection with other human beings; empowered her to have a “self.”
I ache for Mom and her loss of language and all that has gone with it. But thanks to her, I am richer now that I know the power I possess with a vocabulary. Comprehension via language is such a huge gift (sorry to disagree, post-modernists)!
Now, if I can just stall the loss I already feel creeping in…

Today a nice physical therapist came to assess a treatment program for Dad—to help him regain his balance and mobility and in so doing help him milk the summer ahead of us.

A couple hours later, while sitting at the table Dad asked me in an unusually clear voice, "What's the agenda?"

I looked up from the computer, slid my glasses down, and asked back, "Agenda for your physical therapy?"

"No."

"Agenda for life?" (I thought I’d go for the gusto).

"Yes." He smiled.

"Ah. Well. The agenda for life is to live more fully. You are going to get back to being more fully you. We are going to visit the local museum, go see the natural wonders around us, go to the big city to check out the OMSI exhibit."

He smiled more broadly. We're on the right track.

Shoot, this Parkinson's is going to be a nuisance, but we are going to live one shaky bite, one shuffling step, one tough lesson, one adventurous ride, one grateful day at a time.

In my research on Alzheimer’s and glucose metabolism, I ran across a fascinating article about the brain’s default system–that part of the brain that is affected in Alzheimer’s Disease; that part of the brain that hogs glucose like no other part of the brain.

In The Secret Life of the Brain, Douglas Fox brings together research on the default network beginning with Dr. Sokoloff who, in his attempt to find out why the brain uses so much glucose (20% of the body’s supply), discovered that the brain uses as much energy while “at rest” as it does while performing tasks.

Later, a neuroscientist named Marcus Reichle discovered a kind of “brain within the brain” that works its butt off when it’s supposedly in “idle mode.”

Raichle and Shulman published a paper in 2001 suggesting that they had stumbled onto a previously unrecognised “default mode” – a sort of internal game of solitaire which the brain turns to when unoccupied and sets aside when called on to do something else. This brain activity occurred largely in a cluster of regions arching through the midline of the brain, from front to back, which Raichle and Shulman dubbed the default network (Proceedings of the National Academy of Sciences, vol 98, p 676).

It was found that some parts of this network devoured 30 per cent more calories, gram for gram, than nearly any other area of the brain. Since part of this default system is in constant communication with the hippocampus (which records every day memories), Reichler speculated that its function was to sort, evaluate, and categorize memories in such a way that would allow the brain to use the past as an “inner rehearsal” for considering future actions and choices.

Brilliant. Just when you think daydreaming is a waste of time, it turns out it’s crucial for living.

Raichle now believes that the default network is involved, selectively storing and updating memories based on their importance from a personal perspective – whether they’re good, threatening, emotionally painful, and so on. To prevent a backlog of unstored memories building up, the network returns to its duties whenever it can.

In support of this idea, Raichle points out that the default network constantly chatters with the hippocampus. It also devours huge amounts of glucose, way out of proportion to the amount of oxygen it uses. Raichle believes that rather than burning this extra glucose for energy it uses it as a raw material for making the amino acids and neurotransmitters it needs to build and maintain synapses, the very stuff of memory. “It’s in those connections where most of the cost of running the brain is,” says Raichle.

Reichler later attented a lecture by an Alzheimer’s specialist and was shown a map of beta amyloid plaques (those clumps found in Alzheimer’s autopsies) in the brain. The picture looked exactly like the default network!

Raichle, Greicius and Buckner have since found that the default network’s pattern of activity is disrupted in patients with Alzheimer’s disease. They have also begun to monitor default network activity in people with mild memory problems to see if they can learn to predict who will go on to develop Alzheimer’s. Half of people with memory problems go on to develop the disease, but which half? “Can we use what we’ve learned to provide insight into who’s at risk for Alzheimer’s?” says Buckner.

That got me thinking…

Maybe one reason we lose memories is that our lifestyle doesn’t allow for much rich idle time like when we would sit on the porch sipping sweet tea on a hot afternoon. So the default network can never do its work of sorting and categorizing memories, and consequently we lose them.

And if this is a problem with the present generation, how much moreso for the upcoming generation. We are consumed with having something to pay attention to all the time. Just look at TV screens these days: not only do you have the main screen, but there’s the pop-up ad for the “next show,” a caption for what’s going on on the screen, and a ticker at the bottom of the screen for what’s happening elsewhere.

Maybe part of the solution for AD is the “quiet space” to be incorporated in school, at work, and at home. Hmm, come to think of it, I offered this very solution in a comment to an article in Time Magazine back in 09 (Turn Off, Tune In, Log Out):

I predict that the twitterification of our society is going to lead to an exponential increase in early-onset Alzheimer’s. We’re increasing the rate of input to our brains and decreasing the time for processing information, and our brains are going to revolt. That, in turn, will lead to the next big industry: de-twitterification rooms where you can sit alone and unconnected, with nothing but a giant aquarium and a beanbag. -Marty

SEE ALSO Language and the Brain’s Default Network in Alzheimer’s

Continued from Does Alzheimer’s Take Guts? The Niacinamide Experiment Part 2

A Compromised Gut and Aging

Suppose we throw out the acetaldehyde-in-the-blood-and-brain hypothesis. Even if the liver can keep up with the load, the process of breaking down acetaldehyde into a harmless acetate itself will upset the NADH/NAD balance.

NAD (nicotinamide adenoid dinucleotide) is the most important co-enzyme in the body. Aldehyde dehydrogenase depends on it to break down toxic aldehydes. SIRT1 depends on it to keep cells from committing suicide. It is the key to glucose metabolism. Etc.

A shortage of NAD is a normal part of aging:

Once pancreatic β cells and neurons start having functional problems due to inadequate NAD biosynthesis, other peripheral tissues/organs would also be affected through insulin secretion and central metabolic regulation so that the metabolic robustness would gradually deteriorate over age at a systemic level. This cascade of robustness breakdown triggered by a decrease in
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Trying to follow Alzheimer’s research sometimes feels like walking through an Escher exhibit: the contradictions can border on the absurd.
Take the new findings on SIRT1 and its relation to Alzheimer’s. Research after research shows that SIRT1 apparently protects against Alzheimer’s:

25 July 2010. The sirtuin protein SIRT1 is emerging as an important player in learning and memory, and may have potential as a therapeutic target in Alzheimer disease. Fresh on the heels of a July 11 Nature paper that demonstrated a crucial role for SIRT1 in memory (see ARF related news story on Gao et al., 2010), two new papers add to the growing body of evidence that SIRT1 helps keep brains healthy. In a paper appearing July 21 in the Journal of Neuroscience, researchers led by Valter Longo at the University of Southern California, Los Angeles, show that a SIRT1 knockout mouse has numerous defects in learning and memory. This finding implies that SIRT1 could have a protective role in AD, and indeed, in a July 23 Cell paper, researchers led by Leonard Guarente at the Massachusetts Institute of Technology, Cambridge, report that overexpression of SIRT1 can decrease Aβ production and the number of amyloid plaques in a mouse model of AD.

You’d think, then, that more SIRT1 is better for Alzheimer’s and less is worse. But:

Michán and colleagues also examined a transgenic mouse that overexpressed SIRT1 16-fold in the brain. On this normal mouse background, the authors found that this massive SIRT1 overexpression conferred no improvements in learning or memory, and that synaptic function was unchanged except for a slight increase in neuronal excitability.

And though less is worse, vitamin B3 in the form of niacinamide has been shown to “cure” Alzheimer’s in mice by decreasing the expression of SIRT1: Nicotinamide Restores Cognition in Alzheimer’s Disease Transgenic Mice via a Mechanism Involving Sirtuin Inhibition and Selective Reduction of Thr231-PhosphotauWe evaluated the efficacy of nicotinamide, a competitive inhibitor of the sirtuins or class III NAD+-dependent HDACs in 3xTg-AD mice, and found that it restored cognitive deficits associated with pathology. Nicotinamide selectively reduces a specific phospho-species of tau (Thr231) that is associated with microtubule depolymerization, in a manner similar to inhibition of SirT1. Nicotinamide also dramatically increased acetylated -tubulin, a primary substrate of SirT2, and MAP2c, both of which are linked to increased microtubule stability. .

When asked about this contradiction, Dr. Greene, one of the researchers on this paper says,

You are correct – there are contradictions between the role of Sirt1 in AD. Regardless of these, nicotinamide has good effects in the preclinical models, and has been shown to now be effective for other neurodegenerative diseases as well. Sirt1 may be beneficial at some stages of the disease, and not others – we cannot [reconcile] these differences at this stage, but our research says that nicotinamide is highly effective in preclinical models and that inhibition of Sirt1 plays a role in these effects.

Say, what?

My mind wants to hyperventilate with the contradictions, but then I remember the story of the three blind men describing an elephant and realize the contradiction exists only because we do not yet fully understand.

And that’s what drives research onward.

RELATED POSTS:

Alzheimer’s and Glucose Metabolism: the Niacinamide Experiment Part 1

Does Alzheimer’s Take Guts? The Niacinamide Experiment Part 2

Does Alzheimer’s Take Guts? (Continuation)

The U.K. recently decided that Aricept and other acetylcholinesterase inhibitor drugs can be prescribed for mild Alzheimer’s cases (in addition to moderate cases. See article U.K. Reverses Stance On Alzheimer’s Drugs NICE is now recommending that three drugs known as acetylcholinesterase inhibitors—Aricept from Pfizer Inc. and Eisai Co.; Reminyl from Shire PLC; and Exelon from Novartis AG—be considered for use in patients with “mild” forms of Alzheimer’s, in addition to the patients with “moderate” forms of Alzheimer’s for whom NICE previously endorsed the drugs.). The more obvious reason is that these drugs should be getting cheaper once their patents expire, and therefore easier on the state’s prescription coverage budget. The less obvious reason is the relative ignorance Brits have regarding the sport of baseball.
I’ll explain:
First, you have to know how neurons and neurotransmitters work. Here is a short animation that shows how neurotransmitters work in the brain:

The cycle is a fantastically efficient one. Neurotransmitters are shocked into action, released into the synapse where they interact with receptors on the other side of the synapse, then swept up to make room for the next wave of neurotransmitters.
In Alzheimer’s, the favorite neurotransmitter tagetted by drug companies is acetylcholine because it is crucial for the formation of new memories. In the Alzheimer’s brain, there is an increasing shortage of acetylcholine, making it harder and harder for the brain to form new memories. The enzyme that recycles acetylcholine is acetylcholinesterase. What Aricept (an acetycholinesterase inhibitor) does is inhibit this recycling process, so the neurotransmitters hang around longer in the synapse and interact more often with memory-forming receptors.

Here is a video of a different neurotransmitter (serotonin) and its recycling inhibitor. It’s a good picture of the process that takes place with acetylcholine and acetycholinesterase inhibitors:

All of this is easier for Americans to grasp, because it can be compared to baseball: in baseball, players are stored in the dugout, called into action on the field, then recycled back into the dugout when their action is no longer called for.

Suppose that a team were to lose all but four of its players. Someone would have to block the dugout so the players wouldn’t sit back on the bench but rather take up the bat once more.

The players are the acetylcholine, the rule that sends them back into the dugout is the acetycholinesterase, and the person blocking the dugout when there is a shortage of players is the acetylcholinesterase inhibitor.

This also, by the way, illustrates why Aricept et al eventually fail: the four players get tired of playing the whole game all season long and quit.

Someone must have finally explained baseball to the Brits.

More on the brain’s default network:

The default network in the brain is considered a “second brain” because it turns on when the rest of the brain is at rest, and turns off when the rest of the brain is at work. Normally, that is. As people age, the default network is less and less capable of shutting down when the mind is concentrating on some difficult cognitive task as it would do in a younger adult’s brain. Since the default network uses 30% more resources than the rest of the brain, you can see how the resources available for cognitively challenging tasks decreases as we age.

In Alzheimer’s, you get the extreme case of this aging effect: the default network doesn’t shut down at all when it’s supposed to (same as in Schizophrenia–which is probably why they use antipsychotic drugs meant for Schizophrenia in Alzheimer’s patients) until that part of the brain eventually dies.

The default network is not very developed in children. It gets more active as we grow into adulthood. That makes me wonder if language is the software that runs the default network. Think about it: the default network is the part of the brain that sorts, categorizes, and edits/deletes memories, and language is the software that sorts, categorizes, and edits/deletes meaning. With language also comes prejudice, and prejudice does not exist in the very young. Also, in Alzheimer’s the default network eventually atrophies, and language ceases (just further argument that the default network is inextricably tied to language).

All of which brings me to the point of this post. Last week there were articles all over the news saying that having more than one language guards you against the worst of Alzheimer’s. Mom spoke four languages and fell prey to Alzheimer’s in her sixties–with no family history of early Alzheimer’s. Dad spoke three
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By now it’s not news that scientists at Case Western have successfully used a cancer drug to clear plaques from the brains of mice that were engineered to have Alzheimer’s, resulting in a reversal of rodent dementia. The hope is that this drug will do the same for humans.

Here is a more in-depth explanation of Bexarotene (“Drug Reverses Alzheimer’s Symptoms in Mice”):

Alzheimer’s disease arises in large part from the body’s inability to clear naturally-occurring amyloid beta from the brain.
In 2008, Case Western Reserve University researcher Gary Landreth, professor of neurosciences at School of Medicine, discovered that the main cholesterol carrier in the brain, Apolipoprotein E (ApoE), facilitated the clearance of the amyloid beta proteins. [...] The elevation of brain ApoE levels, in turn, speeds the clearance of amyloid beta from the brain. Bexarotene acts by stimulating retinoid X receptors, which control how much ApoE is produced. …bexarotene improved memory deficits and behaviour even as it also acted to reverse the pathology of Alzheimer’s disease [and] worked quickly to stimulate the removal of amyloid plaques from the brain.
[T]he drug addresses the amount of both soluble and deposited forms of amyloid beta within the brain and reverses the pathological features of the disease in mice.

Here is my visual explanation gleaned from an article on curealz.org:
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The other day my sister saw a note I had written on a sticky pad. It was a list of things I needed to do, one of them being to order a refill of Mom’s Seroquel. Except my sister read “Mom’s sequel” and thought I had written a book about Mom and was now working on a sequel. Not a far-fetched idea, as I’m always writing some book or other under the covers with a flashlight (so to speak).
Turns out I’m not writing a sequel about Mom.
Unless I’m writing it with my life.
In my last post I expressed fear that I might be following in my mother’s footsteps. Who wants to inherit Alzheimer’s? But the more I think about it, the more I would be proud to be called my mother’s sequel. I’m certain that anyone who knew Mom would give their right arm to be compared positively to her. She was the most selfless person I’ve ever known. The prayingest person I’ve ever known. The best cook, the best artist, the most humble…
I can remember a couple tizzy fits Mom threw right in the middle of menopause. But dang, other than that it’s hard to think of anything bad coming from Mom.
So I have to say that it is with great pride that I would love to be able to say “I am my mother’s sequel.”

How much time is enough time? We know we are mortals and we know life is but a breath. In light of eternity, we calculate that 100 years passes as quickly as twenty. Yet, given anything less than 100, and we say we’ve been “cut off.”

My big, strapping brother-in-law lays in the hospital right now, fighting for each new minute after a two-year battle with brain cancer. He is tired, and he is ready to rest. We would prefer the doctors find a cure and make him bounce back, but we want to let him go.

Throughout this whole battle, Ken’s mind worked around his brain to bring humor and gratitude to his situation. He firmly believes God’s purposes can be worked through the worst tragedies, and it is amazing to hear how his concerns were always for the eternal perspective he could bring to the waiting room, the surgery room, the recovery room.

Ken’s life may be cut short in our view, but it has been a life well-lived, and that’s more than a lot folks can say. Socrates said that an unexamined life is not worth living; an anonymous person added that an unlived life is not worth examining. I can vouch for Ken that he’s had a life worth examining.

April 26, a.m.: Ken had a brain hemorrage last night and is on life support. Awaiting a family gathering to let him go.

April 26, 7 p.m. Goodbye Kenny. From someone who was present at his bedside: ” just wanted to write and let you know that Ken’s passing was beautiful in the midst of family and hymns and Scripture. The more that Daniel read and Ruth recited the easier his respirations…and soon he just passed on.”

We already miss your booming laugh, your exhuberant living, and your unwavering faith. Save us a place at the banquet table, and we’ll see you in the morning.

I found this short documentary film yesterday while browsing another blog about Alzheimer’s. It’s in French with English subtitles and you can watch it for one euro online. Worth the euro and then some (you can click on the picture to go to the website). The film is done by the son of an artist with Alzheimer’s, and the documentary marries his own artistic and filial sensitivity well.
As an artist whose artistic mother also has Alzheimer’s, this movie hit home for me. It was like watching my own mother lose all her nouns, then her knowledge of interpreting nouns on a canvas, and finally her knowledge of self.
In this film, the mother’s sorrow and fear are mitigated by the son’s desire to hang out with her. I only hope his desire lasted beyond the making of the film. For the sake of all those with Alzheimer’s, I hope love lasts beyond the time the disease is an interesting artistic or scientific curiosity. I hope it lasts beyond the time a diseased person has anything at all to offer.

Yesterday I asked my sister—who is visiting from abroad—what signs of Alzheimer’s she sees in herself. She rattled off some memory problems such as forgetting names of acquaintances or not being able to place someone’s face when out of context. Nothing particularly Alzheimersy, just decreased mental sharpness.
She then asked me if I was experiencing any unusual mental hyperabilities and went on to explain how she seems to have gained a fantastic ability to call up words she didn’t even know she knew.
Funny, I told her. I had this post saved as a draft when she asked me the question. The answer is yes, I’m experiencing this very same thing, and am curious to know if there is a name for it.
Is there such a thing as hyperphasia—the flip side of aphasia? The term hyperphasia exists, and it’s defined as an uncontrolled impulse to talk. But that’s not what I’m referring to. I’m referring to the mind’s sudden ability to pull up obscure words when common words won’t present themselves. Words so obscure that we had no idea we knew them.
I’m well acquainted with aphasia—the “tip of the tongue but it just won’t come” nature of language loss. I’m also familiar with another embarrassing result of gradual mental decline: the mind’s tendency to call up words similar in shape, but wholly different in meaning from the one the user wants. Try Googling “fairy schedule” next time you want to cross the Puget Sound to see what I mean.
But what is it called when the mind calls up unknown words that perfectly fit the context they were intended for? Does neurology study mental surfeits as well as deficits?
I told my sister that I’ve had arguments in my head over this new ability. One night, for example, I went to bed, and as I lay my head on the pillow a picture of our living room doorway came to mind, and with it the word “transom.” I immediately questioned myself:
“Transom? What’s that?”
“It’s the big piece that spans the top of the doorway, dummy.”
“How’d you know that?”
“I don’t know. I just know that it is.”
“You’re probably thinking of Hansom. And I think that’s a horse carriage, not a doorway.”
“No, I know hansom is a carriage. Transom is the door thingy.”
With that, I got out of bed and looked the word up in the dictionary: a horizontal crossbar in a window, over a door, or between a door and a window or fanlight above it
“See?”
“OK, you were right.”
My sister laughed and said, yes, that’s exactly what goes through her brain.
So my question is, what is this newly acquired hyper-phasia called? And is it common to everyone as their minds begin to deteriorate?

Now that’s what I mean. You read something about Alzheimer’s, and all of a sudden you see evidence everywhere that you’ve got it and that your life is over.
I’ve avoided reading Still Alice for years precisely because I knew it would send me reeling with the truth of my own undiagnosed early-onset Alzheimer’s. But I did finally pick it up, and, sure enough, suffered a major breakdown right about chapter three. Yikes! I do have it. Just like Alice, I forgot I was supposed to work on Friday, and when my sister called to remind me, I crumbled. Inwardly, of course.
It’s not just that I forgot. It’s that I forgot and didn’t have that nagging feeling telling me that I was forgetting something eating away at me. It was the peaceful forgetting that terrified me.

So is this forgetting normal or something more sinister? Is it stress from caring for Mom and Dad plus a touch of menopause, or am I following in my mother’s footsteps?

The lucky thing for me is that I don’t have medical insurance–which means I can’t go to a doctor for a diagnosis. I say I’m lucky because, as we all know, it’s not so much the disease that hurts people, it’s the diagnosis. And it’s not just any diagnosis. Cancer, people rally around you. Alzheimer’s or any kind of mental illness, and the room empties out.
Shoot, you can have the disease for years, but as soon as you get diagnosed, that’s when the tazing starts. People just automatically take out their stigma-tazers and start shooting. And they think they have it set on stun, but really those stigma-tazers are always set on kill.

So my question is, what do you do when you read or hear about terrifying conditions to keep yourself from assuming yourself into that condition and absorbing the fear that is often marketed with it? How do you “keep your head, when all about are losing theirs”? (Kippling)
And once you’re diagnosed, how do you overcome all that tazing?
Chuck’s blog on early onset Alzheimer’s is, I think, a courageous way of dealing with one such diagnosis.