Effectiveness of Acidic Oxidative Potential Water in Preventing Bacterial Infection in Islet Transplantation

Masaaki Miyamoto, Kazutomo Inoue, Yuanjun Gu, Masanori Hoki, Seiji Haji, Harumasa Ohyanagi

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DOI: 10.1177/096368979900800410 DOI is the universal ID for this study.

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At a number of points in the current procedures of islet isolation and islet culture after the harvesting of donor pancreata, microorganisms could potentially infect the islet preparation. Furthermore, the use of islets from multiple donors can compound the risks of contamination of individual recipients. Acidic oxidative potential water (also termed electrolyzed strong acid solution, function water, or acqua oxidation water), which was developed in Japan, is a strong acid formed on the anode in the electrolysis of water containing a small amount of sodium chloride. It has these physical properties: pH, from 2.3 to 2.7; oxidative-reduction potential, from 1,000 to 1,100 mV; dissolved chlorine, from 30 to 40 ppm; and dissolved oxygen, from 10 to 30 ppm. Because of these properties, acidic oxidative potential water has strong bactericidal effects on all bacteria including methicillin-resistant Staphylococcus aureus (MRSA), viruses including HIV, HBV, HCV, CMV, and fungi as a result of the action of the active oxygen and active chlorine that it contains. We conducted this study to evaluate the effect of acidic oxidative potential water irrigation on bacterial contamination on the harvesting of porcine pancreata from slaughterhouses for islet xenotransplantation by counting the number of pancreatic surface bacteria using the Dip-slide method, and on the results of islet culture; and to evaluate the direct effect on isolated islets when it is used to prevent bacterial contamination by the static incubation test and by morphological examination. Direct irrigation of the pancreas by acidic oxidative potential water was found to be very effective in preventing bacterial contamination, but direct irrigation of isolated islets slightly decreased their viability and function.

Publish Year 1999
Country Japan
Rank Positive
Journal Cell Transplantation
Primary Topic Pancreas
Secondary Topic Surgery/Transplantation
Model Pig
Tertiary Topic Transplantation/Graft Injury
Vehicle Water (Electrolysis)
pH Acidic
Application Irrigation