title: Exercise-induced changes in blood zinc and related proteins in humans.
abstract: Effects of cycle ergometer exercise (approximately 75% maximum ventilatory O2 consumption for 30 min) on the concentrations of zinc and related proteins in erythrocytes and/or plasma were studied on 11 sedentary male students. Lower concentrations of total zinc and of zinc derived from carbonic anhydrase I type (CA-I) in erythrocytes were observed immediately after exercise, but they disappeared after 30 min of rest. The change in total zinc concentration in erythrocytes correlated well with that in CA-I concentration immediately after exercise, as well as after rest. The concentration of carbonic anhydrase II type (CA-II)-derived zinc did not vary substantially at any time. On the other hand, there were significant increases in the plasma concentrations of total zinc and of alpha 2-macroglobulin (alpha 2-MG)-bound zinc immediately after exercise, whereas no such effect was noted in albumin-bound zinc. A positive correlation was found between total zinc and alpha 2-MG concentrations in plasma immediately after exercise. In addition, the change in the activity of alkaline phosphatase, a zinc metalloenzyme, correlated well with that in the total zinc concentration in plasma. These results suggest that a brief physical exercise induces the movement of zinc into plasma.
authors.forename: H
authors.initials: H
authors.lastname: Ohno
authors.forename: K
authors.initials: K
authors.lastname: Yamashita
authors.forename: R
authors.initials: R
authors.lastname: Doi
authors.forename: K
authors.initials: K
authors.lastname: Yamamura
authors.forename: T
authors.initials: T
authors.lastname: Kondo
authors.forename: N
authors.initials: N
authors.lastname: Taniguchi
mesh_terms: D000328:Adult; D001798:Blood Proteins / Q000378:metabolism*; D002256:Carbonic Anhydrases / Q000097:blood; D004912:Erythrocytes / Q000378:metabolism*; D006801:Humans; D008297:Male; D005082:Physical Exertion; D010953:Plasma Volume; D015032:Zinc / Q000097:blood*; D000511:alpha-Macroglobulins / Q000378:metabolism
chemical_list: D001798:Blood Proteins; D000511:alpha-Macroglobulins; D002256:Carbonic Anhydrases; D015032:Zinc