Weiner66,
I'm glad you have found this website. As mentioned, this tiny group is a powerful resource. Several times I have found treatment options here that my doctors did not know about or consider.
There are a few things I would recommend:
1. Find out what type/form of Antisynthetase you have. This might help you and your docs guide treatments and deal with symptoms. For instance, I have the OJ-auto antibody of AS. It's about 6-8% of AS, tends to only attack the lungs and is seen in absence of myositis and other autoimmune disorders. I was diagnosed in July 2009 after rapidly losing 70% of my lung capacity over 6-8 weeks and was put on a treatment course of high dose prednisone, Imuran, NAC and Bactrim. It took me 18 months but I did manage to clear out my lungs and get back to 75% lung efficiency and get off the supplemental oxygen. I went off all the meds after 22 months, had a relapse and am now on a new treatment mix and working on regaining lung function again.
2. The high dose prednisone has a huge list of side effects and there's some good strategies for dealing with them. If they didn't already tell you, take the prednisone in the morning. It will be less disruptive to sleep (though frankly I never could sleep more than a few hours at that dose, even with Ambien, but a few hours is better than nothing!) You may also get acne rashes, a whirly brain unable to filter out stimuli, lots of muscle weakness, mood swings from manic, talkative states to being easily irritated and dark moods. This will decrease gradually as you taper the dose. Which brings me to the next thing I wish I had known - when they tell you to drop down to a lower level of prednisone, say from 80 to 60, and then 60 to 50mg, etc. do so gradually otherwise your body experiences withdrawals (symptoms are extreme exhaustion, body and muscle aches, dark moods, etc.) You'll have to tinker with what works best for your body, whether it's tapering 2 mg per week or 5 or 1.
3. There are some articles out there with overviews of AS but we are a rare group of patients, so the information is sparse. I often do searches on pubmed.gov (http://www.ncbi.nlm.nih.gov/pubmed/21455765) and read as many abstracts as I can. My docs are also consulting with the Myositis Clinic at John Hopkins Hospital in Baltimore, MD. This clinic seems to be on the leading edge and has seen more patients with AS than most.
http://www.hopkinsmedicine.org/myositis/
It's tricky to find things just on AS, so I often do searches on the disorders it is most often seen with and find information that way.
4. When you get more stable, I highly recommend a referral to Pulmonary Rehab. They will help you learn to manage your energy levels, rebuild some strength and be more mobile with your oxygen.
Good luck and best wishes to you. Kelly