Scientific and Educational Reports of the Faculty
of Science and Technology, Kochi University
Vol. 2 (2019), No. 10

Life-prolonging effect of deep sea drinking water in the hypotrichous ciliated protozoan Euplotes woodruffi

Mikihiko Arikawa and Tatsuomi Matsuoka

Department of Biological Sciences, Faculty of Science and Technology, Kochi University, Kochi 780-8520, Japan


Deep sea drinking water (DSDW), which is produced by processes of desalination and mineralization of deep sea water, contains various minerals and is drunk to replenish the balance of minerals, particularly Mg. Although the effect of DSDW on living organisms has been well studied, few studies investigating the effect of DSDW on cell lifespan have so far been reported. Therefore, to evaluate the life-prolonging properties of DSDW at a cellular level, we cultured ciliated protozoan Euplotes woodruffi in natural mineral water (NMW) and DSDW, and compared the number of cells surviving during the experimental period. Results showed that cells cultured in DSDW lived longer than those cultured in NMW—possibly by consuming a substance richly available in DSDW. To isolate this key element in DSDW, we investigated the effect of various ions on the cell lifespan and found that only cells in the Mg-containing culture water survived as long as cells in DSDW. Judging from the results obtained in the study, we concluded that DSDW can prolong the cell lifespan and that Mg plays a key role in the life-prolonging effect of DSDW.


Received: August 21, 2019
Reviewed by anonymous referee(s), and accepted: September 28, 2019
Published: November 29, 2019

発行者:高知大学理工学部 〒780-8520 高知県高知市曙町二丁目5-1
Faculty of Science and Technology, Kochi University, Kochi, 780-8520 Japan
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