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Has any Type 1 out there experienced an antibody attack against insulin you're injecting/pumping? Just curious if this has occurred with anyone (I've researched that it's rare). If it is/has occurred, how did you reverse this destructive situation? I appreciate any information - thanks!
Most of us have been tested for this.
If you have IgG and IgM antibodies against insulin, your body reacts as if the insulin is foreign. This may make insulin less effective, or not effective at all.
The antibodies can also change the amount of time it takes insulin to work, putting you at risk for low blood sugar. This means that the insulin cannot move glucose from the bloodstream into the cells. As a result, increased levels of insulin are needed to have the same effect, which is called insulin resistance.
If the test shows high levels of IgE antibody against insulin, your body has developed an allergic response to the medication. This could put you at risk for skin reactions, or more severe reactions. Other medications, such as antihistamines or low-dose injectable steroids, may help to lessen the reaction. If reactions have been severe, an in-hospital procedure called desensitization may be necessary.
There was some concern about the new RDNA insulin's because they had no C-peptide
like the old pork and beef insulin but it has not been a big problem.
If you had a reaction to insulin like that, It would be the end.
How could you survive with it? There is nothing else to switch to.
I think it is rare to begin with, but then anyone who has it would be dead, making it more rare.
I'm sure there are people with resistance and develop antibodies , but a full on allergic reaction is something I wont even worry about.
Well there are some people who have developed reactions. During the era of animal insulin use, a fair number of people developed allergic reaction to the animal insulin's. It seems pretty common in the literature. Then, as JohnG notes, recombinant DNA was employed to produce produce "bio-identical" human insulin (R and NPH from Lilly was granted FDA approval in 1982). Since the insulin in these formulation has exactly the same molecule as our natural insulin, allergic reactions are extremely (and I mean extremely) rare.
That being said, in about 1996 the first insulin analogs were developed and approved. These insulin formulations have slightly modified insulin molecules and as such, you can develop an allergic reaction to these foreign insulins. The rate of these allergic reaction is very low, and most people think it is quite rare and as JohnG notes, there is an anti-insulin antibody test. While the test won't tell you which insulin's you have a reaction to, it will tell you that you are having a reaction.
The body is highly selective, so if you develop a reaction to Lantus, it doesn't mean you will have a reaction to Levemir. So you can try other insulin formulation. Some people never get tested for a reaction and simply find that some insulin formulation lose potency and don't work well. Even if you reject all insulin analogs you can still revert to R and NPH. And there is even a loophole, that if you reject all of those, one can still get animal insulin preparations.
I was allergic to Lantus and it had horrible side effects but it still lowered my BG it caused huge lumps about the size of big marbles up to golf ball size along with a rash that looked kind of like poison ivy.
I used Levemir when it came on the market and it had zero side effects not even a burn when injecting.
Well, it is also true that you can be allergic to the additives and preservatives in the insulin preparation but not allergic to the insulin itself. Did you have anti-insulin antibody tests done to see if you were actually having an immune response to the Lantus?
Not When I was using Lantus but I'm negative now and my Endo runs the anti-insulin antibody tests on a regular bases, probably because he feels like I have some insulin resistance. When I used Lantus I suffered with the symptoms for years and just thought it was one more thing I would have tho live with. Things have changed allot in the last 10 years, most doctors today are more liberal when it comes to running tests.