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| Content Provider | PubMed Central |
|---|---|
| Author | Folkers, Karl Ellis, John Watanabe, Tatsuo Saji, Seisuke Kaji, Masahiro |
| Abstract | In a patient with severe carpal tunnel syndrome and a significant deficiency of vitamin B6, the evidence for the deficiency was an extraordinarily low basal specific activity of the glutamic-oxaloacetic transminase of the erythrocytes (EGOT). This enzyme was also deficient in pyridoxal phosphate. The patient was treated with the recommended dietary allowance of pyridoxine, 2 mg/day, for 11 weeks, then 100 mg/day for 12 weeks, a placebo for 9 weeks, and again pyridoxine at 100 mg/day for 11 weeks. Sixty-one monitorial assays of EGOT over 48 weeks supported the following interpretations. (i) His diet permitted the development of a debilitating carpal tunnel syndrome. (ii) Treatment with pyridoxine at 2 mg/day reduced the deficiency of EGOT activity from about 70% to 50%, maintained a deficiency of pyridoxal phosphate, and relieved but allowed a marginal syndrome. (iii) Treatment at 100 mg/day for 12 weeks nearly achieved a “ceiling” level of EGOT and eliminated the deficiency of pyridoxal phosphate. (iv) After placebo for 7 weeks, the deficiencies of EGOT activity and pyridoxal phosphate reappeared, and clinical symptoms become worse. (v) Retreatment at 100 mg/day reestablished a “ceiling” EGOT, with no deficiency of pyridoxal phosphate, and the patient was asymptomatic. These data also support the concept that a deficiency of vitamin B6 is significant in the etiology of the carpal tunnel syndrome. Mechanistically, a state of deficiency of the coenzyme seems to lower the level of the apoenzyme; a state of no deficiency of the coenzyme regulates a ceiling level of the transaminase. The latter state is presumably desired for health. |
| Starting Page | 3410 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 7 |
| Volume Number | 75 |
| Language | English |
| Publisher Date | 1978-07-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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