UROLITHIASIS COMPOSED OF 2, 8-DIHYDROXYADENINE DUE TO PARTIAL DEFICIENCY OF ADENINE PHOSPHORIBOSYLTRANSFERASE

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  • Adenine phosphoribosyltransferase 部分欠損症による尿路結石の1例
  • Adenine phosphoribosyltransferase ブブン ケ
  • Report of a Case

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A 38-year-old male who had urolithiasis due to partial deficiency of adenine phosphoribosyltrans-ferase was presented.<br>The patient who had a past history of urolithiasis was admitted with complaints of left flank pain in January 1978. Plain X-ray films revealed no calcific shadow. Intravenous pyelography and retrograde pyelography showed radiolucent stones in the left upper urinary tract.<br>On January 18, 1978, left ureterolithotomy was performed. Stone analysis with the infrared spectrum, the ultraviolet spectrum, the mass spectrum and the X-ray diffraction spectrum showed that these stones were composed of 2, 8-dihydroxyadenine. Erythrocyte hemolysate activity of adenine phosphoribosyltransferase in the patient was about 30% of normal. Our case seemed to be a heterozygote for adenine phosphoribosyltransferase deficiency.<br>In literature three cases of 2, 8-dihydroxyadenine stone accompanied with complete deficiency of adenine phosphoribosyltransferase have been reported. No case of 2, 8-dihydroxyadenine stone accompanied with partial deficiency of adenine phosphoribosyltransferase has been reported.<br>It is said that deficiency of adenine phosphoribosyltransferase was inherited as an autosomal trait. Erythrocyte hemolysate activities of adenine phosphoribosyltransferase in the patient's family are under investigtaion.<br>The patient is maintained under administration of allopurinol 300mg per day. There is no recurrence of urolithiasis a year after operation.

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