Showing posts with label blood clots. Show all posts
Showing posts with label blood clots. Show all posts

Sunday, May 20, 2012

Behcet's Disease Awareness Day --  May 20th

If you don't know about Behcet's, consider yourself lucky!

Learn more here:



The major BD symptoms include:  ulcers in the mouth, ulcers/lesions on the genitals, eye inflammation, arthritis, skin rash/acne.  

Other symptoms may include: skin lesions, bowel/intestinal inflammation and lesions, fatigue, meningitis, and cranial nerve palsies.  


Imagine waking up one morning with a small spot inside your mouth that feels a bit tingly (not the pleasurable sensation).  From the tingle an ulcer emerges.  It grows from a small dot to the size of a dime.  And the sore is painful when touched by food, a tooth, etc.  Often when one ulcer erupts, another is also in process.  The tongue, inside the cheeks, lower and upper lips, and gums are all favorite places for these pesky and painful sores.  Along with the sores, the inside of the mouth often becomes inflamed.  These are different from canker sores, which typically occur on the lips or outside the mouth.  


Whether there is one ulcer or a mouthful, the experience is quite painful.  It is painful to talk, chew, and lay your head down on a pillow.  Without treatment (typically the steroid prednisone), the ulcers grow and linger for three to four weeks.   I've gone through several tubes of Ora-jel and lots of "magic mouthwash"to numb the sores.  

   

But wait... it gets better:  imagine the same tingle or itch in the genital area.  The ulcers are particularly painful for women and men.  Sitting, walking, and urinating are painful when Behcet's erupts "down there."  Orajel helps numb these sores, and lidocaine/prilocaine work much better.   


During a flare, it is important to drink a lot of water and remain properly hydrated.  The natural tendency is to reduce drinking to reduce the need to eliminate (which is quite painful).


Many Behcet's patients also experience uveitis (inflammation in the eye).   I am grateful that my eyes have not been affected.  

Why Haven't You Heard of BD?
Behcet's (pronounced "beh-chet'") Disease is a rare, chronic inflammatory disorder.  The disease was named after the Turkish doctor who identified this illness, Dr. Hulusi Behcet.

Behcet's is relatively rare in the United States and Europe.  It's prevalence is 0.3 - 6.6 cases per 100,000 population.    It is estimated that there are approximately 15,000 people in the US living with Behcet's.

It is most prevalent in the Mediterranean region, the Middle East, and Far East (China and Japan).  It occurs there in approximately 1 in 10,000 people. Behcet's Disease is often called the "Silk Road Disease."

Considered an auto-immune disease, there are no clear answers as to what causes the body to attack itself in this way.  While it is associated with HLA-B51 allele, genetic testing has not progressed sufficiently to be conclusive.

Why is it difficult to diagnose? 
Several of the symptoms are seen in other diseases.  Other causes must be excluded, such as virus, bacterial, or sexually transmitted infections. There is not yet any identified protein, gene mutation, or other element that can easily confirm the diagnosis.

In addition, because there are so few cases in the US, most rheumatologists and other specialists do not have much experience with Behcet's.

The first rheumatologist I saw said he doubted I had Behcet's Disease because in his 25 years of practice he had only 5 patients with Behcet's Disease.  He knew that I also have Polycythemia Vera (a Myeloproliferative Neoplasm) which is also rare.  "It's highly unlikely one person would have such a constellation of rare diseases."  I decided that I needed a doctor with more experience treating the disease.


I am very fortunate to have found Dr. Andres Salazar with Kaiser Permanente in Georgia.  He did his Rheumatology Fellowship at Emory University Hospital & Emory Clinic under Dr. Jonathan Waltuck.  Dr. Waltuck has Behcet's patients and Dr. Salazar became familiar with this rare disease and various treatments.

The Behcet's ulcers made their presence known in me in the Fall of 2009.  In December, 2009 the ulcers were so plentiful and debilitatingly painful that I stayed home while my family went on a much-anticipated ski vacation.  While the family enjoyed the slopes, I got to meet an infectious disease doctor.
After ruling out all types of infections, he believed that I had Behcet's and referred me to a rheumatologist.
I was treated with prednisone, a corticosteroid, to hasten the healing.

For one year I took prednisone daily, varying the dosage to minimize the ulcer flares and shorten the duration when a flare occurred.  The side effects, however, were absolutely terrible.  Not only did I gain 40 pounds, I had insomnia, became sleep deprived, was very cranky, and forgot many important things.  All this combined made it impossible for me to work reliably.  I didn't like myself nor anyone else.

In January, 2011 I tapered off the prednisone and begged my doctors to let us try something else.

Now I get Remicade infusions every six weeks and take prednisone at the first sign of a BD flare.
Remicade (infliximib) is an immuno-suppresant drug used to treat rheumatoid and psoriatic arthritis and Crohn's disease.  While it can lose its effectiveness on some patients, I'm hopeful this will provide relief for as long as possible.  Some of the other treatment options are not available to me because of the polycythemia vera (my bone marrow over-produces red blood cells).

So far, so good.


Tuesday, November 15, 2011

The Traffic Jam Within: A Primer on Blood Clots and Thrombosis


The 6th Annual International MPN Patient Symposium began with Dr. Babette Weksler giving us a fascinating overview on the invisible threat to people living with Polycythemia Vera (PV) and Essential Thrombocythemia (ET):  thrombosis.

Dr. Weksler is with the Weill Cornell Medical College and Center.  She has studied and treated patients with thrombosis for over 35 years.  Dr. Weksler focuses on diseases of platelets, bleeding and thrombotic disorders, sickle cell anemia, and immunologically mediated blood disorders.  She is a teacher, researcher, and clinician.

This article includes some blood basics along with the specialized information provided by Dr. Weksler.

We all have arteries, which flow blood from the heart to the rest of the body and veins, which return blood from various organs and parts of the body back to the heart.

There are “major” (large) and “minor” (smaller) veins and arteries throughout the body system.  There are also capillaries (very small passageways) for blood to move through the system.

Remember, the blood clotting function is necessary for us to heal wounds and prevent excessive bleeding.  Thrombosis is when the blood clotting function works against the body’s interest (also called “dis-regulated clotting”).   A thrombosis can fill a vein or artery and prevent blood from flowing to its intended destination.  This causes blood to back up, organs to suffer, and often end life as we know it.  This happened to me;  the cascade of problems from three blocked veins is now legendary in my family.

Sometimes a clot gets pushed from where it formed to an organ; this is called an “embolism.”  An “embolism” is an obstruction of a blood vessel (typically a blood clot) that travels through the bloodstream and lodges, resulting in loss of blood flow.  The embolus could be a blood clot, fat mass, air bubble, or other mass.  The most common is a blood clot in the leg gets pushed up into a lung and causes trauma or
death.

So... clots are good;  thromboses are bad.

An “aneurism” is when the wall of a blood vessel (vein or artery) bulges out and weakens.

Anatomy of a Blood Clot:
The clotting function produces fibrin strands, creating a mesh;  then platelets contribute to clot initiation and firmness of the mesh.  Red blood cells get trapped in the mesh and give the clot bulk.

Dr. Weksler explained that the clots in MPN patients are different from blood-healthy patients.  People with MPNs experience thrombosis due to their blood composition and abnormal functioning of the blood, endothelium, and platelets.

Hemostasis is limited clotting that preserves the integrity of blood vessels and maintains normal blood circulation.  It is important to maintain the vascular integrity (healthy blood vessels) and normal blood flow despite continual minor injuries.

High hemoglobin (Hb) in Polycythemia Vera leads to high blood viscosity (thickness), which slows blood flow and leads to thrombosis.  Think about a milkshake going through a straw compared to water).  If the milkshake contains small bits of fruit, it can get clogged in the straw.

The abnormal vessel wall favors thrombosis and blocks clot dissolution.  If the vascular integrity is compromised (blood vessels are weak or damaged) the risk for clots and thrombosis is increased.

Blood clots and thrombosis are frequent in Polycythemia Vera (PV) and Essential Thrombocythemia (ET).
They occur in both veins and arteries, and in large and small vessels.  Clots and thrombosis are major contributors to morbidity (death) for MPN patients.

Interesting note:   Both clots and excessive bleeding may occur in the same person at the same time or different times.

The Why:  Pathophysiology of Thrombosis in MPNs
It is generally understood that when blood stops moving, it clots.  For example, in Polycythemia Vera, a high red blood cell count (seen in high hematocrit) can block small vessels and slow blood flow.  Did you know there are other causes?  I didn’t.

Dr. Weksler offered the clearest explanation I’ve heard of the many ways MPNers experience clots.
There are four different causes of Blood Clots:

1. Endothelial Activation
The endothelial cells line the veins and arteries.  They issue commands to the blood elements and certain organs.  With MPNers, the endothelial cells may shift from non-reactive/anti-thrombotic to pro-thrombotic surface properties.

2. Platelet Activation
Sometimes platelets are activated for enhanced adhesion, aggregation, secretion.  The platelets then gather together and form a clot mesh that catches RBCs that try to flow through the vessel.

3. Blood Coagulation
The blood can initiate the clot when its viscosity (thickness) is increased and thereby slows the flow.  The thick blood can also cause increased thrombin generation and fibrin formation, causing clot formation.
Blood coagulation can also cause decreased fibrinolysis (the body's natural way to break down clots).

4. Red Blood Cells
The RBCs also sometimes push platelets to sides of blood vessels where platelets can interact with vascular endothelial cells.  The RBCs trigger the response by the platelets and endothelial cells.   This can cause microscopic clotting of the platelets.

Dr. Weksler also discussed several differences between Arterial and Venous thrombosis:

Arterial (arteries – taking clean blood from the heart to the body) thrombosis:
Arteries are the fast flow system.
Endothelial injury key
Platelets initiate when activated
“White clots”
Primary preventive treatment:  Antiplatelet therapy (e.g., aspirin)

When the platelet count is over 1 million or 1.5 million, it promotes bleeding:
Acquired von Willebrand (vWD)
These platelets absorb von Willebrand factor, an important clotting factor, resulting in mucosal bleeds.

Venous (veins – taking “used” blood from the body to the heart) thrombosis:
Veins are a slow flow system
Venous stasis key
Fibrin formation mainly;  platelets less involved
“Red clots”
Primary preventive treatment:  Anticoagulant therapy mainstay  (e.g., warfarin)

What are the chances I’ll experience thrombosis?
If you meet any of the following criteria, you are at higher risk for a thrombosis than the general population:
Advanced age (>65 years of age)
Control of MPN anti thrombosis with medication
Prior Thrombosis
JAK2 mutation burden *
Acquired risk factors:  hypertension, high cholesterol, smoking, diabetes, CV disease
Inherited thrombophilia

Persons with Polycythemia Vera have a 33% risk of a major thrombotic event.
Persons with Essential Thrombocythemia have a 17% risk of a major thrombotic event.

*  The JAK2 mutation burden affects thrombosis in MPN patients due to:
1. More immature and activated platelets
2. Higher numbers of activated WBC
3. More RBC precursors capable of epo-independent growth

Interesting Note: In Essential Thrombocythemia (ET), the presence of JAK2 mutation increases the risk of arterial thrombosis.

Platelet-Leukocyte aggregates and micro-particles promote thrombosis.  The different kinds of cells can act together to promote thrombosis.

To reduce the risk of a thrombotic event, MPN patients should lower the hematocrit (HCT) to normal (men <45%, women 42%).  This decreases blood viscosity.
Note:  If one only lowers platelet count, thrombosis may still be a risk.  

Role of Various Drugs with Thrombosis (clots):
Hydrea inhibits Tissue Factor expression, decreases platelet-leukocyte aggregates, and decreases the immature platelets
Aspirin relieves erythromelalgia (excessive dilation of blood vessels of feet or hands)
Interferon preferentially decreases JAK2+clones
To date, JAK2 inhibitors have not decreased thrombosis

For those of us taking warfarin (Coumadin), Dr. Weksler said that the newer anti-coagulants are “not there yet”.  Some patients have tried Pradaxa and gone back to warfarin.  Pradaxa must be taken twice a day consistently and this is problematic for many patients.  She believes that we’ll have a better alternative in a few years.

Here are my take-aways:
  1. There are several different ways our blood may clot and then thrombose (sounds grandiose, doesn't it?!).
  2. Aspirin reduces one kind of risk (arterial clots). 
  3. Warfarin/Coumadin reduces another kind of risk (venous clots).
  4. Hydrea reduces yet another kind of risk (platelet-leukocyte aggregates).
  5. All the preventive treatments must be closely monitored by your physician.  If the blood levels get out of whack (CBC and for those on warfarin, the INR), thrombosis can occur.  
  6. It is possible to suffer from a thrombosis AND internal bleeding at the same time.
  7. PVers and ETers have different blood thrombosis challenges.
  8. Women's hematocrit should be at or below 42%.
  9. Men's hematocrit should be at or below 45%.
  10. Endothelial cells can influence the blood that flows through the blood vessels.  This is a leading edge in study.
I am grateful for those with healthy blood who donate regularly.  Our MPN blood, when taken out by phlebotomy/venesection, can not be shared with others;  thanks to Dr. Weksler, I understand why.

Wednesday, November 02, 2011

A Few Quick Thoughts from the MPN Patient Symposium


I just got back home from the whirlwind trip to New York City for the 6th International Patient MPN Symposium sponsored by the MPN Research Foundation and the Cancer Research & Treatment Fund.  The day was filled with fascinating speakers (several of whom were new to me) and each of them taught me something new.

I'll organize the 25 pages of notes later, but I thought I'd tempt you with these nuggets. :)

Cool Terms I Picked up at the MPN Patient Symposium

Somatic mutation:  a change in a gene that occurs after birth (you aren’t born that way)

Molecular mimicry:  some genes mimic others

Epigenome:  the new area for research

We are all entitled to our own opinions, but not our own facts.

JAK2 and Exon 12 and TET2 – a few of many mutations under exploration

Genomic Instability:  affects the micro environment and what happens with MPNs

Specialized Niche Cell:  cells that are highly specialized (example:  Endothelial cells)

Endothelial cells:   lining of blood vessels;  they also instruct other cells and broadcast directions throughout the body.  They also instruct organ regeneration (eg, liver and lungs). 

Inductive angiogenesis:   uh, i forgot already!

Proliferative angiogenesis:   forgot this one, too!

Role of vascular niche cells in self-renewal of stem and tumor cells:
The micro environment that are created by the mutations have huge impact on what happens. 

Angiocrine Factors                

Niche cell:  activate endothelial cells

Leukemic initiating cells – they expand the vasculature in the bone marrow.


Factoids and A-Ha’s! 
  • Platelet-Leukocyte aggregates and micro-particles promote thrombosis.  The different kinds of cells can act together to promote thrombosis. 
  • We need drugs that target the endothelial cells.   Endothelial cells expand hematopoietic stem and progenitor cells by angiocrine expression of Notch ligands.
  • The first hematopoiesis occurs with the endothelium. 
  • The leukemia from MPNs is completely different from the normal leukemias.  We need different treatments because the biology is different.
  • The Chronic Myeloid Leukemia is triggered by the Philadelphia chromosome, so it is regarded as a different disease process from MPNs.
  • JAK2 is not a “switch” that can be flipped on or off; it has at least 10 different mutations, which cause different disease results in patients.

JAK2:  The One Mutation, Three Diseases problem.
Why do patients develop ET, PV, or PMF?
Level of JAK2 allele burden determine ET, PV or PMF – more so in men than women
How much is the disease versus the host predisposition to develop an MPN?
Are there other cooperating somatic mutations?
  • Despite all the advances, we still have a long way to go – do not be misled by where we are.

  • For those of us taking warfarin (Coumadin), Dr. Weksler said that the newer anti-coagulants are “not there yet”.  Some patients have tried Pradaxa and gone back to warfarin.  Pradaxa must be taken twice a day consistently and this is problematic for many patients.  She believes that we’ll have a better alternative in a few years.
  • Much of the knowledge gained and progress made has occurred because patients before us and among us have shared their tissue samples, DNA, and whole selves for testing and clinical trials.

There was so much more covered.  I hope this tempts you to watch the video when it is available online at the MPN Research Foundation

Stay tuned!
peace,
Marina

Friday, October 14, 2011

4th Anniversary of my Second Chance

October 14, 2007 -- a day as important as my birthday!
Four years ago today, Dr. Darryl Tookes quite literally saved my life with his expert emergency surgery.
October 14th or 15th could very well have been the date after the dash on my tombstone (if I had one).

Dr. Tookes discovered clots in the portal, mesentary, and splenic veins in my gut.  These clots caused part of my intestine to rot and triggered peritonitis which put vital organs in distress.  During my two week stay at the hospital, the doctors searched for the cause of these clots.  I detailed the experience in posts in the Winter of 2007 and early 2009, so I won't digress today.

It wasn't until October 2009 that we learned that I have Polycythemia Vera.  The hematocrit rose to over 69 and I had symptoms that put me at high risk of a stroke.  A bone marrow biopsy confirmed that I am JAK-2 positive;  the protein/gene malfunctioned.

I have not regained the energy, stamina, and mental acuity to return to a 40+ hour career.  I want the old "me" back!  I still dream of making significant contributions to our world.  I want to be back in the compensated career track.  I am continually frustrated by the unreliable and inconsistent "good days" that chronic illness offers.

Shifting focus from frustration to gratitude is part of my daily spiritual practice.  I am aware that my life is much easier than millions of people in this country and the world.  I have a loving and supportive family, excellent affordable health care (which is expensive for chronic illnesses), great friends and community -- both local and on-line, clean water & electricity on demand, plenty of food, a safe and comfortable home...
I don't take my gifts lightly.

With great gifts come great responsibility.  That belief is ingrained in my soul.  Perhaps that is where the frustration is fueled.  There is so much I want to do to act on my gratitude and help others.  I derive intense joy from helping others, easing another's burden.  When I cannot DO, I must focus on BEING... and today I am grateful.

So today, I exclaim a heartfelt THANK YOU to Dr. Tookes and all the great Kaiser Permanente docs and staff who saved my life and keep me going.

May you share gratitude and love to someone who has been there for you.  Trust me, it feels great!

Sunday, April 17, 2011

Tired of the Rat Poison? Alternatives to Warfarin (Coumadin) are "Available"

Friday afternoon I received a phone call from Andrea, my Anti-coagulation Pharmacist at Kaiser.  She wanted to know how I'm feeling and what's been going on with me.  It wasn't a personal call;  I had my blood drawn earlier in the day and the results came back:  my Prothrombin Time PT/INR was 5.7.  This is WAY higher than where it's supposed to be (in the 2.0 - 3.0 range).

The INR (International Normalized Ratio) measures how "thin" the blood is.  In truth, the blood doesn't get thinner;  the platelets get slipperier and don't form clots as easily.   People take anti-coagulants (aka "blood thinners") to avoid blood clots and strokes.

Warfarin (brand name: Coumadin) is the old standby drug.  It is affectionately called "rat poison" because it is, indeed, the poison in rat bait.  The rats eat the bait and go back home and die of internal bleeding.  Those of us who have a history of blood clots (I had the clot trifecta in 2007 that almost killed me) must stay on anti-coagulants forever.  There is no amount of exercise or dietary change that will alter the deficiencies in my blood that cause it's propensity to clot.

Back to Andrea's call and questions:
Any bruises, she asked.  I did a quick scan and noticed 2 bruises on one calf and a bruise on 1 arm and a big toe.  And I have no idea from whence they came (sorry -- no wild activities lately!)
Any changes in your medicines?   No.  
Any changes in your alcohol in-take?  Hmmm... (be honest!)  Yes -- I haven't had any all week.  
Any changes in your diet?   Well, I've got 2 Behcet's ulcers in my mouth so I haven't been able to chew all week.  Soup or broth each day.
BINGO!  When you take the same dosage of warfarin but your diet changes significantly, it can throw the blood level off.
She told me to stop taking the warfarin for the weekend and come back on Monday for another PT/INR test.  She will call me with the results and advise me on the next dosage.
Until then, she said, be careful!  If you have any accidents or falls, go straight to the hospital and tell them you're on warfarin and your INR is high.  (I know that I am highly susceptible to internal bleeding when the INR is this high).

I've become accustomed to this in the last 3.5 years, but I tell you that I do not enjoy getting "stuck" every 3-6 weeks.  Since I have been trying different medications for other chronic illnesses (sounds much more dignified than "experimenting with drugs" doesn't it?!), my body is constantly re-calibrating.

There were rumors for years about more stable alternatives to warfarin.  Anti-coagulants that are more patient-friendly would not be sensitive to how much spinach salad we eat this week (vitamin K), would not require frequent blood testing, and could be administered in a consistent dosage.

Guess what!  Such a drug exists.  It's used in Europe and Canada.  It's been approved by the FDA, but is expected to be cost-prohibitive for most of us "regular" users.  And if the insurance companies and medicare won't cover it, we won't get it.   Here's a few links to information about Dabigatran (brand name:  Pradaxa).
NOTE:  I am not recommending or endorsing Dabigatran.  


I really like MedScape website.  It has lots of helpful information:
Dabigatran -- A Good New Replacement for Warfarin

Here's the pharmaceutical company's website for Pradaxa:  Pradaxa website

If you hear more info or get to try the new med, let me know.
Peace,
Marina