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Modified forearm ischemic test in hypouricemic patients
I. Sebesta, D. Miyamoto, B. Stiburkova, S. Blahova, N. Sato, K. Nagata, K. Okamoto, S. Tsuruoka, K. Ichida
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články
- MeSH
- dospělí MeSH
- hypoxanthin krev MeSH
- ischemie komplikace patofyziologie MeSH
- kyselina mléčná krev MeSH
- kyselina močová krev MeSH
- lidé středního věku MeSH
- lidé MeSH
- močové kameny komplikace MeSH
- předloktí krevní zásobení patofyziologie MeSH
- vrozené poruchy tubulárního transportu komplikace MeSH
- zátěžový test * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Renal hypouricemia sometimes leads to exercise-induced acute kidney injury (EIAKI) of unknown pathogenesis. In order to elucidate the various pathological conditions associated with hypouricemia, we analyzed the effects of low uric acid level on energy metabolism. We have modified semi-ischemic forearm exercise test and performed this test in one Japanese healthy volunteer, three patients with hereditary renal hypouricemia and one patient with hereditary xanthinuria of Czech origin. Forearm exercise was performed by squeezing a hand dynamometer with the sphygmomanometer cuff pressure kept at the mean arterial pressure. Venous blood was drawn five times (before exercise, 3, 10, 30, 45 minutes after the start of exercise) in each tests. The mean plasma lactate concentration increased from a baseline of 1.3 (range 0.7-1.8 mmol/L) to 4.0 (range 2.0-5.5 mmol/L) at 3 minutes after the start of exercise. The plasma hypoxanthine concentrations were quite low before exercise (0-2.9 μmol/L), but increased markedly to a range of 13.6-28.8 μmol/L after 10 minute forearm ischemia. Our protocol allowed us to conclude that the load was sufficient for observing metabolic changes in temporally hypoxia and in following recovery phase. The test was well tolerated and safe, we did not observe any adverse reactions including EIAKI.
Citace poskytuje Crossref.org
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- $a Sebesta, Ivan $u Department of Pediatrics and Adolescent Medicine, Institute of Medical Biochemistry and Laboratory Diagnostics, Charles University First Faculty of Medicine, Prague, Czech Republic
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- $a Renal hypouricemia sometimes leads to exercise-induced acute kidney injury (EIAKI) of unknown pathogenesis. In order to elucidate the various pathological conditions associated with hypouricemia, we analyzed the effects of low uric acid level on energy metabolism. We have modified semi-ischemic forearm exercise test and performed this test in one Japanese healthy volunteer, three patients with hereditary renal hypouricemia and one patient with hereditary xanthinuria of Czech origin. Forearm exercise was performed by squeezing a hand dynamometer with the sphygmomanometer cuff pressure kept at the mean arterial pressure. Venous blood was drawn five times (before exercise, 3, 10, 30, 45 minutes after the start of exercise) in each tests. The mean plasma lactate concentration increased from a baseline of 1.3 (range 0.7-1.8 mmol/L) to 4.0 (range 2.0-5.5 mmol/L) at 3 minutes after the start of exercise. The plasma hypoxanthine concentrations were quite low before exercise (0-2.9 μmol/L), but increased markedly to a range of 13.6-28.8 μmol/L after 10 minute forearm ischemia. Our protocol allowed us to conclude that the load was sufficient for observing metabolic changes in temporally hypoxia and in following recovery phase. The test was well tolerated and safe, we did not observe any adverse reactions including EIAKI.
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- $a Miyamoto, Daisuke $u Department of Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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- $a Ichida, Kimiyoshi $u Division of Kidney and Hypertension, Department of Pathophysiology, Jikei University School of Medicine, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
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