RC51 Forums banner
21 - 40 of 72 Posts

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #22 ·
^^^
I like your thought process!!!
I will post a video of my dyno run on my facebook to have her play it for him!!!
Obviously need to do it again with the Satos, but he'll get the point.
So you guys aren't left in the dark...
 

·
Premium Member
Joined
·
4,672 Posts
Great news Adam! Our prayers work. I look forward to someday soon hearing from Erik himself here, or some words he passes onto you, our friend. :)

I hope his family is holding up OK. I can only imagine the anguish and suffering his wife & 2 daughters must have been through since 12th October. Never lose hope.

[EDIT] - Bugger, I didn't see the Paypal address at the top and so paid 4.5% extra via card instead of sending as a gift via Paypal. Well, I guess it helps the website exist, so that's OK..
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #24 · (Edited)
Thank you guys so much..

Okay Jackie just tagged me in a video and I'm ecstatic right now!!!! I will try to get a link to the video.
Here's an update from just a little while ago
BIG DAY TODAY!!!!!!


God is completely answering our prayers right before our very eyes! Erik Brown who I have asked you all to pray for has actually woken up today out of his coma. He has started to move, follow commands, he is breathing more and more on his own (still with 20% oxygen). He was blowing kisses to his wife today on command. He was able to accurately look at pictures of his daughters by name when asked. He was able to tolerate a sitting position for 2 hours today. All glory to God for the great things HE has done and is continuing to do. Prayer is working! Keep them coming! Here is a picture of Erik and his beautiful wife, Jackie Brown. If you can specifically pray for his placement in a facility that can provide neurostimulation and the financial support needed to fund this facility. There is a possibility that he could get a grant for it. Please pray that God makes this possible for him. His doctors were very excited to see his progress today! He has two little girls ages 5 and 7 too.
 

Attachments

·
Premium Member
Joined
·
4,672 Posts
Great news! Thanks for keeping us posted, Adam. Sounds as if Erik has much that he loves in this world to leave - he's back! :D :D :D
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #26 ·
Yes it does!
Unfortunately, I am unable to share the video.
Anyone that wants to watch it, if you are not my friend on Facebook, just find me.
Adam Evans in Seattle Washington
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #27 ·
Thursday morning bump!
I'd like a big number to give from us all, and I know this site is the most caring forum on the planet with the best people!
Show them what you're made o of!
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #28 · (Edited)
Update from Jackie's Sister (24 October):

A HUGE THANKS TO EVERYONE WHO HAS HELPED US OUT DURING THIS DIFFICULT TIME!!! THE VIDEO OF MY SIS GETTING A KISS FROM ERIK HAS BEEN VIEWED ALMOST 4,000 TIMES AND THE PICTURE WHERE HE FIRST SAT UP AFTER THIS HORRIFIC ACCIDENT HAS BEEN SEEN BY ABOUT 7,000 PEOPLE.... NOW CAN YOU IMAGINE IF JUST 75% OF THOSE PEOPLE HAD EACH DONATED JUST $10 ERIK WOULD HAVE HALF OF THE FUNDS NEEDED TO GET HIM INTO THE NEUROLOGICAL STIMULATION FACILITY HE DESPERATELY NEEDS TO BE IN TO RECOVER FULLY FROM ALL OF THIS!! PLEASE TAKE A SECOND AND DONATE JUST A FEW BUCKS AND SHARE THE LINK THIS SHARE COULD MEAN A MAN REGAINING EVERYTHING BACK WITH THE RIGHT CARE!!! I APPRECIATE EVERY PENNY DONATED AND SO DO THEY!!! **MUCH LOVE** KEEP THE PRAYERS COMING!!!!!!!!





It's Friday and pay day for some of you...
Let's get a good showing for RC51forums!
 

Attachments

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #31 ·
Agreed!!!!
Every day continues.
They docs are still saying he is in a coma.
But he is still fighting!
Today he cleaned his eye!

I think I will give it one more week for donations.
We need a good show for the forum!!!
 

Attachments

·
Registered
Joined
·
51 Posts
Just sent a small contribution to your paypal; please continue to keep us posted on this rider's progress. Let's get him back on the road, I can't imagine being on the bike and then waking up to be told I'll never ride again. I wouldn't wish that on anyone.
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #36 ·
OH MY GOSH!!!!
I just checked my PayPal!!! :eek:
Thanks guys!
Keep it going!!!
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #37 · (Edited)
Post from October 26:

"EVERYONE DESERVES A SECOND CHANCE"
PLEASE READ, I NEED YOUR ADVICE, I NEED YOUR HELP, I NEED YOUR GUIDANCE, I NEED YOUR PRAYERS...
2 WEEKS AGO TODAY OUR BROTHER ERIK BROWN SUFFERED A HORRIFIC MOTORCYCLE ACCIDENT AND HE WAS THROWN OFF FROM HIS MOTORCYCLE MORE THAN 100 FEET BY A CAR THAT RAN A STOP SIGN...
NO INSURANCE COMPANY IS WILLING TO COVER OR TO HELP OUR BROTHER ERIK BROWN AND NO ONE IS GIVING OUT ANY GRANTS...
OUR BROTHER ERIK BROWN IS A CANDIDATE FOR A NEUROLOGICAL STIMULATION FACILITY IN ATLANTA AND THIS MEANS THAT HE WOULD HAVE TO BE TRANSPORTED FROM FORT LAUDERDALE FLORIDA TO ATLANTA...PLEASE HELP OUR BROTHER ERIK BROWN GET THE TREATMENT HE SO DESPERATELY NEEDS SO THAT HE CAN GO BACK TO HIS PRECIOUS WIFE & CHILDREN, JACKIE, GRACIE & MADISSON...
SINCE OCTOBER 12TH ERIK BROWN IS STILL IN A COMA AND FIGHTING FOR HIS LIFE...
 

Attachments

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #38 ·
Update this morning October 27:

Erik is considered medically stable now and has been moved out of ICU to the Neuro step down unit Room 819. He will have less care in there and Eriks mom has left town. I am really, really sick today so I will not be able to see him. If anyone can visit and spend some time with him morning, noon or night, let me know please!
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #39 · (Edited)
From Jackie, just now (October 27):
"My husband has suffered a diffuse axonal injury. Please Google it and learn more about it."


(taken from http://en.wikipedia.org/wiki/Diffuse_axonal_injury)
Diffuse Axonal Injury
Diffuse axonal injury (DAI) is a brain injury in which damage in the form of extensive lesions in white matter tracts occurs over a widespread area. DAI is one of the most common and devastating types of traumatic brain injury, and is a major cause of unconsciousness and persistent vegetative state after head trauma. It occurs in about half of all cases of severe head trauma.

The outcome is frequently coma, with over 90% of patients with severe DAI never regaining consciousness. Those who do wake up often remain significantly impaired.

DAI can occur in every degree of severity from very mild or moderate to very severe. Concussion may be a milder type of diffuse axonal injury.



Mechanism
Unlike brain trauma that occurs due to direct impact and deformation of the brain, DAI is the result of traumatic shearing forces that occur when the head is rapidly accelerated or decelerated, as may occur in auto accidents, falls, and assaults. It usually results from rotational forces or severe deceleration. Vehicle accidents are the most frequent cause of DAI; it can also occur as the result of child abuse such as in shaken baby syndrome.

The major cause of damage in DAI is the disruption of axons, the neural processes that allow one neuron to communicate with another. Tracts of axons, which appear white due to myelination, are referred to as white matter. Acceleration causes shearing injury, which refers to damage inflicted as tissue slides over other tissue. When the brain is accelerated, parts of differing densities and distances from the axis of rotation slide over one another, stretching axons that traverse junctions between areas of different density, especially at junctions between white and grey matter. Two thirds of DAI lesions occur in areas where grey and white matter meet.

Characteristics
Lesions typically exist in the white matter of brains injured by DAI; these lesions vary in size from about 1–15 mm and are distributed in a characteristic way. DAI most commonly affects white matter in areas including the brain stem, the corpus callosum, and the cerebral hemispheres. The lobes of the brain most likely to be injured are the frontal and temporal lobes. Other common locations for DAI include the white matter in the cerebral cortex, the superior cerebral peduncles, basal ganglia, thalamus, and deep hemispheric nuclei. These areas may be more easily damaged because of the difference in density between them and the rest of the brain.

Histological characteristics
DAI is characterized by axonal separation, in which the axon is torn at the site of stretch and the part distal to the tear degrades. While it was once thought that the main cause of axonal separation was tearing due to mechanical forces during the trauma, it is now understood that axons are not typically torn upon impact; rather, secondary biochemical cascades, which occur in response to the primary injury (which occurs as the result of mechanical forces at the moment of trauma) and take place hours to days after the initial injury, are largely responsible for the damage to axons.

Though the processes involved in secondary brain injury are still poorly understood, it is now accepted that stretching of axons during injury causes physical disruption to and proteolytic degradation of the cytoskeleton. It also opens sodium channels in the axolemma, which causes voltage-gated calcium channels to open and Ca2+ to flow into the cell. The intracellular presence of Ca2+ unleashes several different pathways, including activating phospholipases and proteolytic enzymes, damaging mitochondria and the cytoskeleton, and activating secondary messengers, which can lead to separation of the axon and death of the cell.
 

·
Premium Member
Joined
·
1,580 Posts
Discussion Starter · #40 ·
(continued)
Cytoskeleton disruption
Immunoreactive axonal profiles are observed as either granular (B,G,H) or more elongated, fusiform (F) swellings in the corpus callosum and the brain stem (H) at 24h post traumatic brain injury. Example of APP immunoreactive neurons (arrow heads) observed in the cortex underneath the impact site (E,G). No APP staining was observed in healthy control animals (D). Axons are normally elastic, but when rapidly stretched they become brittle, and the axonal cytoskeleton can be broken. It is thought that integrins connected to the extracellular matrix outside the cell and to the cytoskeleton within it can transmit forces from the matrix to the cytoskeleton and cause the latter to tear when the axon is stretched.

Misalignment of cytoskeletal elements after stretch injury can lead to tearing of the axon and death of the neuron. Axonal transport continues up to the point of the break in the cytoskeleton, but no further, leading to a buildup of transport products and local swelling at that point. When it becomes large enough, swelling can tear the axon at the site of the break in the cytoskeleton, causing it to draw back toward the cell body and form a bulb. This bulb is called a retraction ball, the hallmark of diffuse axonal injury.

When the axon is transected, Wallerian degeneration, in which the part of the axon distal to the break degrades, takes place within one to two days after injury. The axolemma disintegrates, myelin breaks down and begins to detach from cells in an anterograde direction (from the body of the cell toward the end of the axon), and nearby cells begin phagocytic activity, engulfing debris.

Calcium influx
While sometimes only the cytoskeleton is disturbed, frequently disruption of the axolemma occurs as well, causing the influx of Ca2+ into the cell and unleashing a variety of degrading processes. An increase in Ca2+ and Na+ levels and a drop in K+ levels is found within the axon directly after injury. Possible routes of Ca2+ entry include sodium channels, pores torn in the membrane during stretch, and failure of ATP-dependent transporters due to mechanical blockage or lack of energy. High levels of intracellular Ca2+, the major cause of post-injury cell damage, destroy mitochondria, contribute to the generation of reactive oxygen species and trigger phospholipases and proteolytic enzymes that damage Na+ channels and degrade or alter the cytoskeleton and the axoplasm. Excess Ca2+ can also lead to damage to the blood brain barrier and swelling of the brain.

One of the proteins activated by the presence of calcium in the cell is calpain, a Ca2+-dependent non-lysosomal protease. About 15 minutes to half an hour after the onset of injury, a process called calpain-mediated spectrin proteolysis, or CMSP, begins to occur. Calpain breaks down a molecule called spectrin, which holds the membrane onto the cytoskeleton, causing the formation of blebs and the breakdown of the cytoskeleton and the membrane, and ultimately the death of the cell. Other molecules that can be degraded by calpains are microtubule subunits, microtubule-associated proteins, and neurofilaments.

Generally occurring one to six hours into the process of post-stretch injury, the presence of calcium in the cell initiates the caspase cascade, a process in cell injury that usually leads to apoptosis, or "cell suicide".

Mitochondria, dendrites, and parts of the cytoskeleton damaged in the injury have a limited ability to heal and regenerate, a process which occurs over 2 or more weeks. After the injury, astrocytes can shrink, causing parts of the brain to atrophy.

Diagnosis
Diffuse axonal injury after a motorcycle accident. MRI after 3 days: on T1-weighted images the injury is barely visible. On the FLAIR, DWI and T2* weighted images a small bleed is appreciated.DAI is difficult to detect since it does not show up well on CT scans or with other macroscopic imaging techniques, though it shows up microscopically. However, there are characteristics typical of DAI that may or may not show up on a CT scan. Diffuse injury has more microscopic injury than macroscopic injury and is difficult to detect with CT and MRI, but its presence can be inferred when small bleeds are visible in the corpus callosum or the cerebral cortex. MRI is more useful than CT for detecting characteristics of diffuse axonal injury in the subacute and chronic time frames. Newer studies such as Diffusion Tensor Imaging are able to demonstrate the degree of white matter fiber tract injury even when the standard MRI is negative. Since axonal damage in DAI is largely a result of secondary biochemical cascades, it has a delayed onset, so a person with DAI who initially appears well may deteriorate later. Thus injury is frequently more severe than is realized, and medical professionals should suspect DAI in any patients whose CT scans appear normal but who have symptoms like unconsciousness.

MRI is more sensitive than CT scans, but MRI may also miss DAI, because it identifies the injury using signs of edema, which may not be present.

DAI is classified into grades based on severity of the injury. In Grade I, widespread axonal damage is present but no focal abnormalities are seen. In Grade II, damage found in Grade I is present in addition to focal abnormalities, especially in the corpus callosum. Grade III damage encompasses both Grades I and II plus rostral brain stem injury and often tears in the tissue.

Treatment
DAI currently lacks a specific treatment beyond what is done for any type of head injury, including stabilizing the patient and trying to limit increases in intracranial pressure (ICP).

Potential treatments
Polyethylene glycol acts as a membrane sealant, and may serve to prevent the aforementioned devastating calcium influx. Rats treated with polyethylene glycol immediately following DAI induction showed no cytotoxic edema on diffusion weighted MRI 7 days later unlike controls.

History
The idea of DAI first came about as a result of studies by Sabina Strich on lesions of the white matter of individuals who had suffered head trauma years before. Strich first proposed the idea in 1956, calling it diffuse degeneration of white matter, however the more concise term "Diffuse Axonal Injury" was eventually preferred. Strich was researching the relationship between dementia and head trauma and asserted in 1956 that DAI played an integral role in the eventual development of dementia due to head trauma. The term DAI was introduced in the early 1980s.

Notable examples
Top Gear presenter Richard Hammond suffered a DAI as a result of the Vampire Dragster Crash in 2006
Champ Car World Series driver Roberto Guerrero suffered a DAI as a result of a crash during testing at the Indianapolis Motor Speedway in 1987.
Formula 1 driver Jules Bianchi suffered a DAI as a result of an accident at the 2014 Japanese Grand Prix.
 
21 - 40 of 72 Posts
Top