Henry Ford Researchers Search for Answers for the Chronically Sleep-Deprived
by Carey Chesney
Sleep is something most of us take for granted. We turn
out the lights each night and not long after we drift away to unconsciousness.
We dream a bit, our body refuels and we wake up in the morning armed with new
energy to seize the day, or at least get through it.
Flint resident Amer Iqbal was eager to participate in a research study
to help gain insight into his sleep problems.
But for Amer Iqbal, 31, of Flint, sleep is never as easy
as just turning out the lights.
“I have trouble falling asleep, staying asleep and getting back to sleep when
I wake up in the middle of the night,” says Iqbal.
Iqbal’s struggles with sleep have had an impact on his physical and mental
health. He can’t work out and play basketball as much as he used to (two of his
favorite activities) and he often struggles to get through the most basic tasks
of the day.
“Sometimes when I’m driving to work, I find myself dozing off at the wheel,”
he says. “I drive all the way from Flint to downtown Detroit to work every day
and that’s quite a long trip when you’ve only had a couple of hours of sleep
after tossing and turning all night. When I started falling asleep at the wheel,
I knew I had to do something, not just for me, but also for my wife and
kids.”
So Iqbal went online and searched for sleep studies he could participate in.
He wanted to gain some insight into his own problems while at the same time
helping support research in the field
“I came across a study being conducted at the Sleep Research Center at Henry
Ford Hospital and was immediately interested,” He says. “They were looking for
volunteers, so I signed up.”
Here a sleep technician charts Iqbal’s sleep rhythms to help determine
what causes the signs and symptoms experienced by those with
insomnia.
Conducted by Gary Richardson, M.D., a senior research scientist for the sleep
center, the study Amer enrolled in was part of a series of studies conducted to
test the theory, first proposed at Henry Ford, that insomnia is a result of
hyperactivity of the brain’s stress response system. In particular, insomnia may
be a consequence of increased levels of a specific brain protein called
corticotrophin releasing hormone (CRH).
“Increased secretions of CRH create a state of physiological hyper-arousal,
including increased metabolic activity, increased levels of stress hormones like
cortisol and epinephrine, as well as sleep disruption. This is a profile
that is very similar to what we see in patients with insomnia,” says the Henry
Ford researcher.
In the study, participants are given a drug called dexamethasone, a steroid
that results in transient increases in brain CRH levels, producing changes in
brain EEG activity that can be measured in the laboratory. An exaggerated
response to dexamethasone in patients with insomnia, compared to normal
sleepers, would support the theory that CRH is elevated in this condition.
“If we can show that CRH is indeed involved in producing the signs and
symptoms of insomnia, then we would have an important new focus for future
efforts toward treatment, or even prevention,” says Dr. Richardson.
All the studies conducted at Henry Ford Hospital’s Sleep Research Center
share that same goal: to analyze the causes of sleep disorders with the hope of
eventually finding a cure and a way to prevent them.
Research like this is important for people who suffer
from sleep disorders because most of the treatment options available right now
offer a short-term solution to a long-term problem.
Henry Ford research scientist Christopher Drake, Ph.D., seeks a cure
for insomnia.
“Many of the treatments for insomnia that are available
today are effective, but may not be addressing the underlying pathology of the
disorder,” says Christopher Drake, Ph.D., a Henry Ford senior research scientist
who has led a number of studies geared toward determining possible causes of
insomnia. “Unfortunately, that leaves the potential for more side effects and is
not likely to correct the problem without continued treatment.”
The limitations of these treatments, as well as the adverse side effects that
can accompany them, serve as proof that sound research in the field of sleep
disorders is the only hope for finding a long-term cure, exactly the type of
research going on at Henry Ford Hospital’s Sleep Research Center.
Dr. Drake and others at the center recently finished a study designed to
determine if there are characteristics in people that make them predisposed to
insomnia.
They wanted to know whether it is possible to identify “at-risk” insomniacs
before the disorder takes over their lives. This will help identify the
physiological and psychological aspects underlying the disorder rather than
those that are a consequence of the sleep disturbance itself.
“This study has reinforced the widely-held theory that some individuals have
inherent traits that make them more vulnerable to insomnia. If we can identify
who is at risk, we can search for specific genetic differences in these people
that may eventually lead to determining the causes of insomnia and, hopefully, a
cure,” he says.
“We hope we will eventually be able to treat insomnia early enough that we
can prevent it from becoming a chronic problem. For the 10 to 15 percent of the
population that suffers from chronic insomnia, early prevention could
dramatically improve the quality of their lives.”