Getting Old With a Sense of Humor
Here’s a fascinating animation superimposed over a lecture by psychiatrist and writer Iain McGilchrist on the two hemispheres of the brain. You may have to watch it 15 times to really get it.
In continuation of Alzheimer’s and Glucose Metabolism: The Niacinamide Experiment Part 1
This post is simply me mulling over things I’ve read in light of Mom’s dementia and my own experience with stress and mental short-circuiting, with the conclusion that in some cases of Alzheimer’s, intestinal flora could be greatly to blame. My conclusion also points to the possible way niacinamide could function in correcting one of the malfunctions in the gut-brain axis.
The Gut-Brain Axis
In-depth studies of human intestinal microbes are just now coming into maturity. The Human Microbiome Project is fueled by the increasing belief that the population of bacteria and yeasts that inhabit the human digestive tract is greatly responsible for how the body and mind develop and how they continue to function or malfunction as we tinker with the balance of flora in our gut:
Visionaries are hoping for cures for some forms of obesity and anorexia along with various forms of cancer, asthma, multiple sclerosis, Alzheimer’s, lupus, and most of the major psychiatric diseases. In the future, Blaser [of the infectious-disease research lab at New York University] says, pediatricians could help prevent these diseases by infecting babies with a starter kit of friendly bacteria. “Bottom line, humans and our fellow animals have been colonized by microbes for a very long time, going back a billion years. The microbes that we carry have been selected because they are helpful to us. They participate in human physiology. They are a compartment of the body, like the liver or the heart.” (1)
When the BP oil spill happened in the Gulf of Mexico, we were all
Memory can be wonderful and cruel all at once.
It’s been almost a year since Dad died, and I’ve discovered that it takes a year to fully recover from the exhaustion of caregiving. It takes a year to recover fully enough to crave the chance to do it a second time over—to do it right this time.
Last Thursday was one of those gorgeous days that make your spirit soar. It was just warm enough, just breezy enough, just relaxing enough, just full enough of good plans that I wanted Dad here to enjoy it with us. I was in the middle of a supermarket parking lot when that thought came to me, and it was the beginning of a four-day breakdown.
Why can’t I be given a second chance? I’ve got all my energy back now, and I swear if I’m allowed, I’ll show Daddy all the tenderness that I had no time or energy to give him before. Why did he have to die before I recovered my ability to love him?
It was a catch-22 I battled with all weekend.
That Thursday evening I drove over the mountains to attend the licensing of a young preacher. I took advantage of the lonesome drive to listen to a book on tape my niece lent me. The title was “My Life in the Middle Ages.” It was supposed to be funny. Turns out the first two CDs were all about this guy’s father’s declining months. It was about death; about tying up all those messy loose ends.
Of course I bawled my way through that. When I couldn’t take it anymore—when I thought I’d better get my face in shape for the licensing ceremony—I popped in an Ingrid Michaelson CD. Quirky, upbeat Ingrid. Problem is, I’d never really listened to some of those songs before. About the fifth song on the CD is about the inevitability of death. “We are all snowmen, and we’re going to melt one day.”
The same message is being pounded into me over and over.
We’re all snowmen, and were are going to melt one day. It’s the norm. It’s not a devastating tragedy.
But the point of it? The point of living and dying and leaving others behind to bawls their eyes out?
Here I was, the daughter of a preacher, going to the licensing ceremony of a young, vibrant, new preacher, and I wasn’t getting it.
The point of living and dying, it slowly sunk in, is to pass on the baton. The best thing we can do is to spend ourselves living, then die and offer the lessons of our lives as rich mulch for the next generation.
It made me think of all the lessons I absorbed from Dad’s life. Like:
– Nature is awesome
– Don’t spend what you don’t have
– Prayer changes things
– God is gentle
– Invest in people on the fringe of society; they’re the ones who will remember you
It was a good weekend to mourn and know that there is good in all of this.
From now on, when mourning strikes, I will try to add to the list of lessons learned.
And I will think about how my life will have an impact after I—like all of us will—eventually melt.
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.
Yesterday a social worker came to the house to evaluate Dad for possible in-home care assistance. It was a thoroughly humiliating experience for Dad.
The list of questions issued were designed to find out exactly what Dad can and cannot do for himself. The fact that Dad can’t do much at all for himself is something we try not to throw in his face even as it happens. Every time Dad can’t sit in the chair correctly and a struggle ensues to find the right verbal or physical cue to help him do so, Dad’s self-esteem takes a dive. Every time he can’t find a certain room in the house… can’t tell time… etc. So when a list of questions comes along and lays out each and every one of his deficiencies in one sitting, piling them up in front of him like so much garbage to be hauled around, well, it would be an understatement to say it was humiliating.
The further we got into the questionnaire, the more Dad’s countenance fell. It got to the point that I let Dad tell the social worker that he had no problem doing x or y or z, even though I knew the truth.
We ended up somewhere between the truth and Dad’s dignity, honoring neither.
At the very end, this wise social worker asked a question that was clearly not on the list. She asked, “Do you like to fish?”
You could see the dark cloud lift from over Dad’s beaten-down self! A tiny bit of affirmation in the midst of all that pummeling! Never mind that Dad can’t do it anymore; the question at least allowed him the pleasure of showing a positive side of himself. For once, he got to answer a very truthful “yes!”
And that made me wonder: why can’t we–in the pursuit of scientific correctness–remember the spirit of a man? Why can’t we sprinkle questionnaires with bits of affirmation for the sake of dignity alone? Would it hurt science or government to ask “what’s one of your favorite books?” to a woman applying for food stamps? Or “what superpowers would you most like to have?” to a veteran seeking disability assistance? Shoot, while I’m at it, can we change the the category from “seniors and people with disabilties” to “seniors and people with abilities”? There are always things we can still do; things we still like; things we still dream about.
Just stuff I wonder.
And you? Do you have any beef with questionnaires?
So, the music itself was great. Plus, Greg was a gem of an entertainer, weaving funny little stories throughout his performance, making us laugh and shout out responses. Very audience-attentive.
Which brings me to the point of this post.
See, when Greg first came out on the stage, he sat in front of a rickety old pump organ that was set up next to his keyboard (just two of about sixty eight instruments he played that night). And he told us the story of how he went out to buy a computer that day and ended up buying this antique organ instead. A 1911 organ to be precise.
Now, the whole time he was relating his organ-acquisition saga, I was thinking of Mom, because this was the exact kind of organ that Mom played in church down in Brazil for many years. And I was picturing Sunday afternoons when Mom would fold up the organ (or have one of us kids do it), hoist it into the van and drive it to one of the favelas around town for a Bible club. I pictured snotty little kids running to the van, touching the organ as it was set up, and singing their lungs out at the sound of Mom’s squeaky playing.
At the end of his story, Greg paused, looked at the organ, and said, “I’ll have to name her.”
Well. It didn’t take two seconds for me to think of the perfect name for that organ. So I shouted out “Ruth!”
And it didn’t take Greg two seconds to feel it in his bones that the name fit. He chuckled, muttered something about my timid voice (I thought I’d shouted), and agreed that the organ should be named Ruth.
It made my day. Made my niece’s day, cuz now her Greg Laswell has an organ named after her grandmother (hmm. Is there any good way to reword that sentence?).
But this story means even more to me for the irony in it. You see, Greg sings a lot about trying to forget. Trying to forget a love. Trying to forget the pain of a lost love. And here he is now, lugging around a little pump organ whose namesake–Ruth–wants more than anything else in the world to remember. Too weird. One is cursed by memory, the other by the loss of it.
Anyway. I have to thank Greg for a fun night that will only grow in significance as I retell this story.
And you have to keep an eye out for Greg. In case, you know, he turns out to be somebody. Like Ruth.
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
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
“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?
It’s a very painful fact that I miss Dad and that I wish I had spent more “being time” with him instead of dividing my time between being and being productive. As I’ve mentioned before, in hindsight, all you want is to be near the one you’ve lost just a few more minutes. Nothing else matters but being in the person’s presence and having them know you are there.
I want to do this with Mom, but Alzheimer’s presents a huge problem. Whenever I see Mom sitting alone, it kills me because she looks so terribly alone. So I go sit with her, and on a good day—most days—she is riveted with my presence. But the second I leave her sight—to fling clothes from the washer to the dryer; to use the bathroom; to make a cup of tea—she is completely alone again. And in those moments—from her perspective—she has always been and always will be alone. There is no memory of my having been in her presence all morning other than a few moments of necessary “productive time.”
I hate this disease. There is no sufficient quality time you can give someone with Alzheimer’s. As a caregiver, it feels like there is no neutral status for you as a human being: you are either benevolent or malevolent; sacrificial or selfish; worthy or worthless.
Alzheimer’s isn’t a one-man disease; it does a pretty good job of spreading the pain around.
It's just one doctor after another these days…
We barely got to the clinic and we were both already exhausted: Dad from getting dressed, fed, squeezed into a jacket, compressed into the car, ejected from the car, and hung in a wheelchair. Me from doing all that to him without the cooperation of his muscles. We didn’t even want to go into the clinic. I told Dad that what we should do is write a children's book about aging and how fun it is. Dad laughed. I said we could describe how you get to ride around in a cool scooter—even inside the house. And how you get to have cool leopard print all over your skin without paying a cent for it. And how if you get skin cancer on your ear, you have to have a chunk cut off (like Dad) and then you can fit right in with the folks at Rivendell or Lothlorien.
I really see some potential there.
Might as well take this big old lemon and make lemonade.
(P.S. If you have any more ideas for the book, let me know)
So I re-listened to the Fresh Air segment today, then did some quick digging through articles I’ve seen online on the brain, stirred it all around, let it simmer some more, and here is the reduction I got.
Maybe our addiction to the pursuit of happiness is contributing to brain aging. It’s not an umbrella cause, of course. You would never have been able to say that Mom led a hedonistic lifestyle. And Ronald Reagan pursued a lot more things than happiness. But still… The connection between what Dr. Linden was saying and what I’ve read makes me suspicious.
In David Linden’s Compass of Pleasure, he talks about the pleasure area of the brain as being that part that–in response to certain activities or substances–produces dopamine. Dopamine is the “feel good” neurotransmitter in the brain. It is activated when we engage in certain activities or thought processes, but it is also activated when we injest/inject food, alcohol, narcotics.
Some things that produce dopamine are completely healthy. Like a good run, the enjoyment of friends, reading a stimulating book.
Some things are borderline good. Like food. Everybody needs it. The pleasure of good food produces dopamine. But when pleasure is sought after for pleasure’s sake, “the brain’s dopaminergic circuitry gets blunted. In all cases of producing pleasure in the brain, it takes increasing levels [of a thing] to produce the same level of pleasure” (quoting Dr. L). So with food, you eventually get overweightness if the pleasure of food is pursued beyond the body’s need for it. Obesity is contributing to an epidemic of Diabetes, which is strongly linked to brain aging. By indirect means, then, the pursuit of a happy palate can lead to brain aging.
Then there are things that produce dopamine (or cause its production) that are not healthy. Like alcohol, nicotine, cocaine. This falls in with the acetaldehyde hypothesis I wrote about in Does Alzheimer’s Take Guts. Alcohol, cocaine, and especially cigarette smoke have–at some point in their metabolic breakdown–the toxic aldehyde acetaldehyde. Very destructive to the brain. Dopamine is produced as the end-process of breaking down harmful aldehydes into harmless acids. It’s the brain’s “Yahoo!” after saving the day from the bad guys. That “Yahoo!” may be a good thing, but again, in order to get it a second, third, and nth time, you have to increase the attack on the body. [Interestingly, Disulfiram‘s use to treat alcohol and cocaine addiction works by inhibiting ALDH2 (aldehyde dehydrogenase) which is the enzyme that metabolizes acetaldehyde. It lets the toxin do its full work rather than disabling it by metabolizing it into a harmless acid. So the brain does not get its “yahoo!” And if you get no yahoo, you don’t repeat the action.]
The problem with focusing on happiness above all else is that we may end up using the short-cut and more harmful methods of getting that dopamine high.
Dr. Linden’s solution? “Try to take your pleasures broadly: exercise, meditate, learn, have moderate consumption of alcohol, moderate consumption of food.”
I would add: pursue friendships, do charitable work, tend a garden, read a good book (get more ideas at Changing Aging).
As Captain Kirk once said, “There are a million things you can have and a million things you can’t have. Choose the million you can.”
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.
Here’s a short section of a CNN interview of Michael J Fox done by Sanjay Gupta—about living with Parkinson’s:
“Liberating” is what Michael calls his Parkinson’s! A chance to do something significant with his life! The turning point? The diagnosis. The act of giving a name to his symptoms allowed him to take back control of his life. Wow!
I cried throughout, of course, because Dad’s Parkinson’s was nothing liberating. But the reason it was such a cage, I think, is that it went undiagnosed until the very end. His shaking was written off as “familial tremors” (like his father and brothers who likewise had hand tremors without Parkinson’s) for twenty years, so all his other symptoms—an expressionless face, shuffling gait, forward tilt, drooling, even dementia—weren’t blamed on a disease: Dad had to take the blame himself.
I’m sorry, Daddy. How freeing it would have been to know your body was beyond your control. I think it would have helped your mind to gain control over your brain.
I hope this will convince anyone out there who suspects they may have Parkinson’s to get a thorough neurological examination. Take control of your disease and don’t let it eat up the rest of your life.
Eleanor Cooney’s Death in Slow Motion: a Memoir of a Daughter, Her Mother, and the Beast Called Alzheimer’s is not just one book. This is two tales in one: a memoir of desperate caregiving and a biography. The memoir part follows Eleanor’s hyperventilated, drug and alcohol-sustained trek through the five stages of Alzheimer’s caregiving for her mother, Mary Durant, and the biography chapters relate the story of her mother prior to Alzheimer’s (think Dorothy Parker with abundant sex and alcohol) ending with a very rare love story between Mary Durant and Michael Harwood (her third husband). Having the story weave through these two windows makes the reader feel the compounded tragedy of the beast called Alzheimer’s.
You will laugh, clench, oggle, envy, and cry as you read this literary gem.
As a bonus, Cooney includes a previously unpublished short story written by her mother (in a style I would call Flannery O’Connor cum wicked smirk).
Buy it. Read it. Pass it on.
P.S. People who read this book will probably also buy and read Mary Durant and Michael Harwood’s On the Road with John James Audubon. Mine is already in the mail.
The Alzheimer’s Research Paradigm
If you’ve every studied philosophy of science, you’ll recognize that current research in the field of Alzheimer’s Disease is battling paradigms. The funny thing is, the Alzheimer’s field hasn’t even reached the level of robust theory, yet there is strife in the ranks of researchers fighting over the direction inquiry should take:
“Kill the amyloid plaque!”
“No, viva le beta amyloid!”
“Forget amyloid. It takes tau to tangle.”
“Ha! The biomarker emperor has no clothes!”
“Wait. Isn’t it all about insulin resistance?”
“Nix all the above. Just get quality sleep, and you’ll be fine.”
If you think this is funny, these basic statistics will sober you up:
* As of 2010, there are 5.4 million people in the US with Alzheimer’s
* Almost half the people over 85 have Alzheimer’s
* When the baby boomers come of Alzheimer’s age, the costs of care for this disease alone will cripple Medicare and Medicaid
* Federal funding for research into a cure is dropping fast
* YOU will be paying for either your own care or for that of a loved one if a cure is not found. And YOU will either be grossly neglected when this disease hits you, or you will die the slow death of stress from caregiving for someone else.
Bottom line: research into Alzheimer’s—its cause(s), treatment, and cure—is alarmingly urgent and terribly underfunded.
There are plenty of people out there who believe we shouldn’t put money into research at all, because so far nothing has been found to stay the course of “Alzheimer’s” dementia, and the whole drug industry is just a ploy to line the pockets of the pharmaceutical fat cats. If you’re in that group, you can stop reading this now. If, however, you would really like to see your Mom or Dad or Yourself able to have a meaningful conversation with your loved ones and know whom you’re talking to—hopefully for the rest of your life—read on, because the question isn’t whether or not to research. The question is where do we put our research dollars?
Not a simple answer when you consider that the reigning paradigm for Alzheimer’s research is serious question.
Let me explain with recent findings from my own readings:
A couple weeks ago I attended a Cure Alzheimer’s Fund webinar presented by Dr. Rudy Tanzi (of Massachusetts General’s Institute for Neurodegenerative Disease) on Alzheimer’s research and drug development.
Beta Amyloid: Clues From Our Genes
Dr. Tanzi’s group is in the “clues from our genes” pool (looking at the genes as a starting point rather than, say, looking at diet first). The dominant belief in this pool up until recently is that beta amyloid plaque accumulation in the brain, followed always by tau tangles, are the two main biomarkers for Alzheimer’s Disease. That is, where there is Alzheimer’s, there is an overabundance of beta amyloid plaque and destruction caused by tau in the brain. Also, a higher load of plaque correlates with a higher degree of dementia (see slide from webinar). Plus, as this accumulation progresses and moves to different parts of the brain, there is a parallel manifestation of symptoms.
The connection seems pretty obvious. And Dr. Tanzi certainly has the credentials: back in the 80’s when he was studying Down’s Syndrome, he realized they had isolated the gene responsible for amyloid “plaque” deposits in the brain, and—given that all Down’s Syndrome sufferers end up with Alzheimer’s—thought to make a link between this gene and other cases of Alzheimer’s. From there it was one success after another, with Dr. Tanzi participating in the discovery of three of the four known gene mutations causing early-onset Alzheimer’s (these are the genes that guarantee you will get Alzheimer’s). Granted, early-onset AD accounts for only 5% of Alzheimer’s cases, but it does give weight to the conviction that Alzheimer’s has a genetic link. More recent studies looking at family history suggest that up to 80% of Alzheimer’s cases are genetically influenced (see slide from Tanzi’s presentation).
The presentation is convincing enough until you start reading the commentary in the field and start learning that current direction of research into the causes of Alzheimer’s is highly questioned.
Researchers coming on the scene today, for example, would argue that the plaque theory is circular reasoning. You can’t say that plaque leads to Alzheimer’s if you first define Alzheimer’s as “dementia with plaque.” And when your theory states that plaque accumulation leads to Alzheimer’s, the automatic null hypothesis is that where there is plaque (in copious amounts) you will always find dementia, and when plaque is cleared, dementia will go away.
But this has not born out. It is now known that “roughly one-third of all elderly adults have such plaques in their brains yet function normally.” It has also been proven that the elimination of beta amyloid plaque (achieved by the “Alzheimer’s vaccine”) does not cure dementia.
Thus the paradigm shake-up. Why continue with the biomarker research when the facts don’t bear an airtight connection? Is the “clues from our genes” group too heavily invested financially and psychologically in this line of research (as some suggest) to give it up as dead?
Dr. Tanzi responds to these fears in his recent presentation. He didn’t use the word per se, but nuance was the main come-back. All theories undergo refinement, and this plaque-causes-dementia theory is no exception. Looking at the genes may have lead to wrong conclusions in the past, but there are still some pretty interesting clues to follow going forward.
Here is a crude rendition of the protein-level pathology in Alzheimer’s:
Beta amyloid (Aβ) is cut off from its precursor protein; Aβ links to other ab in small clusters; Aβ kills nerve synapses; Aβ accumulates into plaques
For the past twenty years, research has focused on improving the symptoms of dementia by eliminating the final clusters of beta amyloid (plaques). Looking at the little diagram above, different drugs targeted the beta amyloid at different points on the linear progression toward plaque: Flurizan targeted the process that snipped the Aβ off its precursor protein; Alzemed tried to block the aggregation of Aβ; Dimebon was designed to protect the neurons from Aβ; one drug successfully immunized the brain against Aβ (resulting in clearance of plaque from the brain, inflammation in the brain, and progressive dementia); and finally, drugs were developed (Aricept and Namenda) to act at the symptomatic level.
None has had any significant effect on the brain’s function in memory tests.
Tanzi’s response? Perhaps the reason drug trials fail is that the potency of the drug is off—either too weak or too strong—and funding for a subsequent trial is cut off. Or perhaps researchers need to stare at the diagram a little longer and find out whether beta amyloid needs to be left to do some mission, then cleared before it wreaks havoc on the synapses.
Which is exactly what happened with Dr. Tanzi—a little stroll through the lab, a light-bulb moment, and Tanzi discovers that beta amyloid kills bacteria and yeast like nobody’s business. Beta amyloid is a good guy? The plaques themselves are just “a field of bullets” left over from some major battle?
Definitely worth an investigation. A new direction.
To Fund Or Not to Fund
So it turns out that looking at clues from the genes is not a paralyzing avenue of research after all. Is the paradigm really dead, or just needing refinement? In the new direction of Alzheimer’s research, Dr. Tanzi’s findings have lead to a more recent drug (PBT2) that takes the “antibiotic” role of beta amyloid into account as it tries to clear its toxic leftovers. Do we pull the plug on funding just when the story is getting really interesting?
The competition out there is fierce. You would think from some of the stinging accusations aimed at the “old school” research that funding for groups such as Tanzi’s should be questioned. Yet, as the webinar pointed out, “the vast majority of our knowledge about AD and AD drug discovery has been based on studies of the four known AD genes over the past two decades.” That’s old school success.
On the down side, “about 70% of AD genetics is unexplained by the four known AD genes.” On the further down side, it’s going to take A LOT of funding to find the genetic culprits for the rest of Alzheimer’s cases. And genetics is still only one of several approaches to studying this disease! (Besides, paradigms don’t die until a better one supersedes it, and there is no airtight theory out there yet).
Do we put all our eggs in one basket? What if there aren’t enough eggs to spread around to the different baskets?
Frankly, I don’t know the answer to this question.
There are a couple good reasons I think the Cure Alzheimer’s Fund group is worth supporting, though. One reason is the Cure Alzheimer’s Fund website itself. The Internet has plenty of faults, but it also has the advantage of open criticism. If you look at the comments sections of one of the papers put out by Tanzi’s group on the Alzheimer’s Forum, you’ll see an open debate. It’s free collaboration. It’s crowdsourcing at its best. I think it multiplies the value of your funding dollar.
Another reason is that I’ve suspected my own mother’s caseStay tuned for a post on this topic to be of possible bacterial/fungal origin and am dying to see what this group finds in their new line of research. The only thing I fear is the psychological barrier to this new approach.
A Taboo Research Project?
To be specific: the two agents being considered by Tanzi’s group as possible aggressors in the beta amyloid battle are Chlamydia and Candida Albicans. But looking at Candida Albicans as a possible cause of anything is TABOO in mainstream medicine. Just browse the comments section of a recent article in the New York Times about Candida Albicans, and you’ll see what I mean.
Will Tanzi’s group have the courage to fight all the enemies of research at the same time: tainted motives (the desire for personal glory), psychological entrapment (continuing in a line of research simply because it’s been going on for so long), and mainstream opinion about what is acceptable research (we do not look at X)?
I guess it’s going to take a lot of money to find out. Which brings us back to the basket issue.
Do we have to duplicate Alzheimer’s research at the Federal and State levels? The state of Texas, for example (being one of the top three states that will go broke paying for Alzheimer’s care in the future), is spreading its research egg money into several baskets:
* Prevention and Brain Health
* Disease Management
Why repeat this with every state, plus private groups on the side? Is there a way to get more collaboration between research groups? The well of needed funding is infinitely deep, so why are we digging multiple wells?
I guess part of the answer is that individual motivation for research (even if it is for personal glory) is the strongest kind you can find, and therefore the best engine for finding a cure. And likewise, education plus individual conviction will drive donations. There is certainly enough information available at one’s fingertips to give no one who is interested in a cure an excuse to sit on the sidelines!
So what will you do?
Because where there is a will, there will be a way to end the increasingly long goodbye.
For further reference:
Beta-Amyloid: An Antibiotic? (with a slew of interesting comments)
Alzheimer’s Brain Tangles Offer Clue To Worsening
Alzheimer’s Disease: No End to Dementia
New Potential Cause of Alzheimer’s Disease Detected
Alzheimer’s Scary Link to Diabetes
Follow the Alzheimer’s Breakthrough Ride journal
An video report on several intriguing theories of Alzheimer’s.
- alzheimer's antipsychotics art award body-language book-review cancer caregiving causes coping cues cure death dementia diagnosis diet Dimebon disabilities drugs early-onset ego end-stages fear gadgets gut heredity humor images language lifestyle metabolism movies music parkinson's phenotype prevention progression research seniors slideshow stigma stress symptoms validation violence
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