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- Yoshiki Tsuchiya, Junichi Hoshino, Tatsuya Suwabe, Keiichi Sumida, Rikako Hiramatsu, Koki Mise, Eiko Hasegawa, Masayuki Yamanouchi, Noriko Hayami, Naoki Sawa, Kenji Arizono, Shigeko Hara, Kenmei Takaichi, Takeshi Fujii, and Yoshifumi Ubara.
- Nephrology Center, Toranomon Hospital , Tokyo , Japan .
- Amyloid. 2013 Dec 1; 20 (4): 272-4.
AbstractWe report a Japanese woman with variegate porphyria accompanied by amyloid A (AA) amyloidosis. Arthropathy involving multiple joints occurred at 35 years old and persisted. C-reactive protein was 4.0 mg/dL, but rheumatoid factor was negative. Radiographs did not reveal any loss or narrowing of the joint spaces. Two years later, blister formation after sun exposure and reddish urine were first noted. At the age of 45 years, she developed abdominal pain, nausea, vomiting and seizures. After administration of phenobarbital, reddish urine was noted and muscular weakness progressed to atonic quadraparesis. Porphyria attack was diagnosed from high urinary levels of ∂ aminolevulinic acid and porphobilinogen. At the age of 47 years, hemodialysis was started. At the age of 49 years, progression of her gastrointestinal event resulted in death. Autopsy showed massive deposits of AA amyloidosis in various organs, including the kidneys and digestive tract. Thus, amyloid deposition may have contributed to both end-stage renal failure and her gastrointestinal symptoms. This is the first report about the coexistence of porphyria and AA amyloidosis. Chronic inflammation related to this patient's seronegative arthropathy, although atypical for porphyria, might have contributed to the development of AA amyloidosis.
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