Amyloidosis, Beta2M (Dialysis-Related) Treatment & Management
- Author: Anita Basu, MD; Chief Editor: Vecihi Batuman, MD, FACP, FASN more...
Medical Care
At present, no adequate treatment of beta-2-microglobulin amyloidosis exists. Medical therapy is limited to symptomatic approaches in ameliorating joint pain and inflammation.
- The treatment of joint pain includes nonsteroidal anti-inflammatory drugs, intra-articular injections of prednisolone, 10% hydrocortisone cream, and low-dose oral prednisone in severe cases.
- Conservative treatment includes physical and occupational therapy. Wrist splints, cervical collars, lumbar corsets, knee braces, and immobilization for spondyloarthropathies often are helpful.
- Improvement of dialysis membranes: High-flux biocompatible polyacrylonitrile and polysulfone membranes have increased middle molecule removal and thereby enhance beta-2-microglobulin removal during HD and hemofiltration.
- Online hemodiafiltration: This has been associated with the maximal removal of beta-2-microglobulin.[13]
- Dialysate preparations: Use of ultrapure, sterile, and apyrogenic dialysate may aid in decreasing stimulation and in releasing cytokines. It also may decrease plasma levels of acute phase proteins.[14]
- Direct hemoperfusion-type adsorption column (Lixelle): This was developed to selectively eliminate beta-2-microglobulin from the circulating blood of patients with DRA. Lixelle treatments reduce the circulating levels of beta-2-microglobulin and inflammatory cytokines, thereby improving the symptoms of patients with DRA. While these treatments have been used and studied in Japan, they are not currently used in the United States.[15, 16]
- Studies in Japan have been done to destroy amyloid fibrils of a beta2-microglobulin fragment by laser beam irradiation; this has implications in both preventing the deposition of amyloid fibrils and for destroying preformed amyloid deposits.[17]
Surgical Care
Surgical intervention, including carpal tunnel release with surgical decompression of the median nerve or release of the transverse carpal ligaments under endoscopic visualization, flexor tenosynovectomy or percutaneous first annular pulley release, spinal stabilization or laminectomy, or total joint replacement, may be effective in alleviating pain and restoring function. Unfortunately, orthopedic interventions have high failure rates in DRA compared with the general population. If during the course of a surgery, beta-2-microglobulin amyloidosis is suspected, then a biopsy should be performed at that time.
- Renal transplantation
- Renal transplantation is the treatment of choice for beta-2-microglobulin amyloidosis. It lowers the blood concentration of beta-2-microglobulin to the reference range, halting the progression of the disease.
- Osteoarticular symptoms, such as joint pain, swelling, and stiffness, disappear within the first week after transplantation. Cystic lesions usually remain unchanged, and regression of amyloid deposits probably does not occur.
- Transplantation is not an option for all patients. Renal transplantation has already failed in some patients on long-term dialysis when they develop beta-2-microglobulin amyloidosis, and others may not be suitable candidates.
Consultations
- A rheumatology specialist may be needed.
- Initiate early consideration for renal transplantation.
Diet
- No known diet directly affects beta-2-microglobulin.
- Patients with renal failure should receive the appropriate dietary management for that condition.
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