Poor genes, poor health – but not poor me!

I’m approaching the 2nd anniversary of my diagnosis with ITP. I feel stronger and happier than I did this time last year, but it’s been a strange journey, and along the way there have been far more questions than answers!

Every three weeks I have a blood test, and my GP and I analyse the data and come up with a new or extended hypothesis of the underlying causes of my low platelet count and my prognosis over the next few weeks. As well as the all-important platelet count, we have a cycle of other markers we monitor – cortisol, haemoglobin, red cells, white cells, lymphocytes, monocytes, basophils, eosinophils, calcium, vitamin D and vitamin B12, plus a string of blood chemicals and hormones identified only by initials – most of which I only have the very vaguest understanding of what they do.

No simple answer for thrombocytopenia

Two years on and the one thing that is clear is that there is no simple, straightforward answer as to why I have thrombocytopenia. Why my platelets bounce up and down, and struggle to reach 100. Why 50 or 60 is an OK level for me, though it would be a tremendous psychological boost if they would sit on 100 for while.

On 50, or better still, 60, I function pretty well most days, with maybe one dodgy day a week or 10 days. By ‘dodgy’ I mean slow moving in the morning, or shaky for the first couple of hours, so my bad days are nowhere near as horrible and debilitating as they have been, and are, currently, less frequent.

Over the months, we’ve looked at various possible causes or contributing factors, such as H pylori ,gut parasites, and low-grade Lyme disease. Plus we have identified some of my genetic deficiencies – being gluten-intolerant and also unable to metabolise folate from food. Now we have another one – low level hypothyroidism.

Hypothyroidism a possible villain?

In the latest blood test, we checked my Vitamin B12 level, something we do every three months, together with homocysteine. As usual, the B12 was lowish – still within the very broad range of 145-637, but this time right at the bottom. And the homocysteine was way up, almost double what it should be. Both the high homocysteine levels and the inability to metabolise folate are linked to the MFTHR gene and can occur together with low levels of thyroid hormones, and could indicate very borderline hypothyroidism.

That my presumed hypothyroidism is very marginal is shown by the fact that I exhibit none of its most noticeable symptoms: tendency to gain weight and inability to lose it; slow thinking; thin hair and hair loss; puffy eyes; oily skin; and other more delicate comparisons – such as constipation vs irritable bowel.

What it appears I have is ‘secondary hypothyroidism’, thanks to the last year’s adrenal fatigue and my ongoing adrenal insufficiency. So possibly the borderline hypothyroidism is not so much a cause as what the medicos call a co-morbidity – connected, but not necessarily cause and effect.

Chronic condition from long-term problems

To sum it up, here’s my equation:
a lifetime of less than optimal health (as a result of choosing my parents badly), compounded by environmental factors* + an unknown viral or environmental stress in 2009 = ITP.

Not a clear cause and effect, or diagnosis and cure, but good enough to be going on with, now that what was life-threatening two years ago is pretty much under control.

Reasons to be cheerful

• My weight is pretty steady at an appropriate weight for height and build: 60kg to my 160cms and thin bones;
• I have good energy (most days)
• I enjoy going to the gym 2 or 3 times a week
• I have enough freelance work that I can manage
• I love doing coffee or going to a play, concert, discussion group or art gallery with family and friends
• I have time to write my short stories
• The jacarandas are flowering
• I feel good!

* Tasmania, my home state, has very low iodine levels in the soil, causing many people to develop gross hypothyroidism and goitres. This connection was not recognised until I was about 10, so I would not have had an optimal iodine intake during my early growing years.

ITP: a work in progress

It’s over a month since I last updated this blog, and that’s because I’ve had a shocker of a time. Half the month was taken up by being laid low with a nasty gastric virus. Something that would normally take someone four or five days to recover from took me a fortnight. Diarrhoea, vomiting, shivers, and a lot of sleeping. I was not ill enough to go to hospital, but not far off, and certainly ill enough to frighten my friends and family.

An interesting result from the viral infection was the way my platelets responded. I had assumed they would drop even lower than their current level of around 45, and just prayed they wouldn’t drop below 20 – the level at which my doctor and I have agreed I’ll go back to hospital. Instead, they received a huge bounce – to 233, the highest they’ve been in the 11 months since I was diagnosed with ITP.

This anomaly is explained as my immune system being so busy fighting the virus that it left my platelets alone. This shows my spleen is producing thrombocytes in the right numbers, something we hadn’t been sure about before. Now we just have to find a way to stop the immune system munching them all up when it doesn’t have something more threatening to deal with.

Because the platelets are so high, I have been able to drop the steroid dose by 0.5mg and will take off another 0.5mg again next week. Down to 5.5mg prednisone – a little closer to getting off it altogether!

Possible link with Lyme disease

Each time I have a blood test, as well as the usual full blood count, my doctor looks for clues as to what might be causing the ITP. We’ve eliminated H.pylori and gut parasites, and we’re still treating the toxic overload. Now we’re following up on a possibility of an underlying infection of Lyme disease.

For years, medical authorities in Australia have insisted that Lyme disease doesn’t exist here, because none of the 68 species of ticks have been found to carry any of the three species of Borrelia bacteria responsible for Lyme disease. However, my doctor, among a handful of others across the country, claims that patients do have Lyme, and perhaps the spirochaete bacteria is carried by other insects, particularly spiders, mites, and perhaps also leeches.

In common with some of her other suspected Lyme sufferers, I have low levels of a marker called CD57, which the very latest research says is a definite marker for Lyme disease. Because the spirochaete can drill its way into any of the organs of the body, Lyme presents with any of a combination of at least 200 different symptoms, so people with the infection can appear to have different diseases.

At this stage, we're not going to do anything about it, as it's not definite I have the disease, and the specific test is very expensive and not always accurate, but my CD57 count and low folate and Vitamin B12 levels suggest I may have contracted Lyme some time in the past, perhaps when bushwalking in Tasmania over several years, and could still have a low-grade infection of it.

Exploring the complexity of ITP

Each fortnight, when I visit my doctor and study my blood test results with her, I learn something new. This time it was the CD57 count and what that could mean. Other times, we have had genetic test results and I’ve learned a little more about my genetic makeup and how the gene expression – for instance the MTHFR gene preventing me from metabolising folate – can create conditions which cause my immune system to struggle.

I’m fortunate that, as a medical and science journalist, I can not only understand this technical information, but that I also find it intellectually stimulating to learn new facts or theories. I imagine for some ITP sufferers, or sufferers of any serious or chronic illness, this information load could be rather daunting and maybe, depressing.

On the bright side

The cholestyramine ‘glug’ that I’ve been drinking for three weeks (with a break during the gastric episode) is having the desired effect. As well as lowering my cholesterol very satisfyingly, it is pulling out the toxins from the Staph aureus. At last my daily – and often day-long – headaches have stopped! Not only do I feel brighter, but I’m actually itching to get back to writing my short stories.

And another reason to be cheerful: I no longer have the steroid pumpkin face and look almost normal again!

Reality Check

One month on and my platelets have been up and down, and my emotional and physical health with them. I had a high – a record 101 three weeks ago, with ensuing confidence, happiness and denial of how serious the condition is. Thank goodness I have my psych to bring me back to some sort of reality once a fortnight!

Because of, course, as soon as we reduced the prednisone by the tiny 0.5mg, the platelets took a dive, and kept on diving for 3 weeks in a row. Down went my strength and resilience, up went the incidence of headaches and shakiness

The platelets have stopped diving, and crept up a whole two points, but at least my doctor and I are starting to recognise my immune system’s pattern. It takes three weeks or so for my cortisol levels to get up to the artificial level of the steroids, so there’s a gap when it’s below what it should be. So the platelets start dropping and keep dropping. Then, it catches up, & they turn around, & rise for 3 weeks until we do the next reduction.

H Pylori and Gut Parasites

During this month I’ve had a series of extra tests, as we cover all the angles. Following last month’s research findings on H pylori, we checked my blood for antibodies. Thankfully we found none, as I really didn’t want to add antibiotics to my pharmaceutical diet. Next, we’ve tested my faeces for signs of gut parasites that might be causing the regular bouts of diarrhoea that afflict me, and reduce my absorption of nutrients from my food. The results aren’t all back, but it seems probable that I’m clear. Which points the finger at food intolerances.

Testing for Food Intolerances

I’m already aware that I’m gluten intolerant, thanks to the presence of one gene for coeliac disease. So, I’ve - reluctantly - adopted a strict gluten-free diet, and started making my own bread – so much better flavoured (and cheaper) than the commercial stuff. Even more reluctantly, I gave up my morning serve of porridge, as even I had to admit that I could no longer digest oats. The 1/8th Scottish blood in me was sorely tried by giving up porridge, and replacing it with the less tasty and certainly less filling millet ‘porridge’.

Now, it seems my Scottish and Welsh heritage (also only 1/8th) might be to blame for some other form of food intolerance. It turns out that people of Celtic background are more prone to food problems than non-Celts. The poor Irish have the highest incidence of food intolerances in the world. So now we’re checking to see if I have the somewhat rude-sounding MTHRFR gene, and if I do, it will be off to see the food intolerance expert at Sydney Uni.

More Depressing Results Of Long-Term Steroid Use

Also during this month of tests, I had a bone mineral density check up, and yes, my bones are thinner by 5%, pushing me ever closer to osteoporosis. It seems the prednisone is drawing calcium from my bones into my blood stream, and, according to my doctor, taking a calcium supplement would simply put more calcium in blood, not back into my bones, until we can majorly reduce, or even stop, the steroids for a while.

Equally bad is the news that I now have metabolic syndrome(‘pre-diabetes’). While I knew the steroids had raised my triglycerides and total cholesterol to quite high levels, my blood pressure is well controlled, and remains perfectly normal, so I’d hoped I would escape the treat of diabetes. Well, no, I’ve developed insulin resistance. So, another change of diet, to minimise it. Now I must drop my carbohydrate load and eat even more protein – ie– at all three meals a day, and up my fat consumption to replace the energy I won't be getting from carbs. Eight months ago I was on a low fat, low protein (100 grams a meal), high carbohydrate diet that suited my lifestyle and kept me around my normal weight of 65 kilograms. Now it’s completely reversed! Thanks, steroids – thanks a bunch!!

Also this month I had a date with my optometrist, who confirmed my eyesight was worse than this time last year – by a large amount, but reassured me that it might not be permanent.

On the Bright Side

It’s winter in Sydney, which means it’s not cold by most people’s definition, the sun shines most days, and I’m enjoying rediscovering meat dishes and relearning how to cook tasty warming meals the slow cook way. And my doctor says I should eat more bacon – in moderation, of course!

More Thoughts on ITP

ITP has a new name, or at least a more efficient attempt at nomenclature. New research on the condition was reported in the March edition of the American journal, Hematologist. The very first news was the name change, according to Professor of Pediatrics at New York Presbyterian Hospital, Weill Cornell Medical College, Dr James Bussel.

“There is now a standard nomenclature. ITP is now immune thrombocytopenia; the “i” is no longer “idiopathic” and “purpura” is no longer part of the name,” he reported.

Well, so now the medicos no longer confess in the condition’s name that they don’t know the cause. It is now officially an auto-immune disease and perhaps they have some better idea as the original cause of the condition.

New Hypotheses on the Pathology of ITP

Dr Bussel reported that understanding the underlying pathology of ITP has changed. The old idea was that thrombocytopenia resulted from antibody-mediated platelet destruction.

Now there are two new concepts. The most developed hypothesis is that the same antibodies that mediate platelet destruction also impair platelet production by damaging the megakaryocytes (the bone marrow cells responsible for the production of thrombocytes) and/or blocking their ability to release proto-platelets.

That's one idea. Here's another: “An exciting but to-be-explored area involves the role of platelet reactive cytotoxic CD8+ cells. These cells clearly exist, but their clinical relevance is not known,” Dr Bussel reported.

Another area of intensive investigation involves T-regulatory cells, which have been reported to be deficient in ITP in several studies, but as yet there are no results.

Eradicating H pylori Infection Lifts Platelet Numbers

Some researchers have suggested than an infection with Helicobacter pylori, the bacteria responsible for causing stomach ulcers, may have a limiting effect on the numbers of platelets in people already suffering from ITP.

An article in the journal Blood in February 2009, reported on a systematic review of all the studies published dealing with H pylori infection in patients with ITP. The researchers wanted to test “whether the eradication of H. pylori infection can increase the platelet count in patients with immune thrombocytopenic purpura”, which they said was “still a controversial issue”.

They looked at 25 studies including 1555 patients, and saw a 42.7 percent increase in patients’ platelet counts from around 30 to 100, and a 53 per cent increase in patients’ doubling of platelets from around 30 after treatment to eradicate H. pylori infection.

The researchers said responses were better in countries with a high background infection of H. pylori, but concluded that “the detection and eradication of H. pylori infection should be considered in the work-up of patients with seemingly typical ITP”.

I’ll certainly be discussing a test for H. pylori with my GP!

On the Way Up, I Think

For the past two or three weeks I’ve been feeling stronger and healthier, which is a great improvement. For three weeks in a row my platelet count sat at 46, so my doctor and I reduced my steroid dose by a whisker – 0.5 mg – to 7mg a day.

The following week the count dropped to 32. I thought this was a disaster, but my doctor was much calmer. All my other blood chemistry was good – haemoglobin back to normal, non-anaemic levels, kidney and liver functions good, and the cytotoxic leucocytes – the white blood cells eating up my platelets like Pac-Man in my bloodstream – were back down to a normal level. She tweaked my Chinese herbs some more and cautioned calm.

This week, the platelets have crept back to 36, and my physical energy and brain power are both at about 70 percent of what they used to be. I feel scarily normal, and will have to work hard at not working hard – that is, pacing myself to take lots of rests, do as much exercise as I can without tiring, and enjoy time with friends. Although I feel capable of working, I must be aware that I’m not 100 percent.

Meditation and Staying in the Now

In the past couple of weeks I’ve started seeing a psychologist to help me with depression – a normal side-effect of a chronic health condition, which is apparently exacerbated by the steroids. After a couple of sessions discussing the meaning of life (the old ‘why me?’ cry, when struck by crisis like diagnosis with a potentially life-threatening illness), we decided that what I needed was help with focus. Staying in the now.

So I have a cd with meditation exercises, and as well as going for a walk every day, I must now sit down quietly for at least 10 minutes and try to still my anxious, chattering mind. I know from reading about meditation that it can help lower blood pressure. I wonder if there’s any study done into the beneficial effects of meditation on platelet counts?