1996 Fiscal Year Final Research Report Summary
Study on the cooperative bactericidal activities between neutrophis and antibiotics, electrolyzed-oxidizing water in serious infection disease
| Project/Area Number |
07457482
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Surgical dentistry
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| Research Institution | HIROSAKI UNIVERSITY |
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Principal Investigator |
KIMURA Hiroto Hirosaki University School of Medicine, Professor, 医学部, 教授 (90142851)
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| Project Period (FY) |
1995 – 1996
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| Keywords | infectious disese / MRSA / neutrophil / antibiotic / electrolyzed-oxidizing water / cooperative bactericidal activity / active oxygen production / flow cytometry |
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| Research Abstract |
O_2^<・->production abnormalities of neutrophils in peripheral blood with severely infectious disease in maxillofacial region were investigated by CLA dependent chemiluminescence method. The effect of antibiotics on O_2^<・->production of neutrophils was also studied. Furthermore, bactericidal effects of electrolyzed-oxidizing water on Stapylococcus aureus (S.aureus) were investigated by O_2^<・->production of neutrophils and expression of integrin molecules.Results were as follows.
1. O_2^<・->production of neutrophils obtained from 12 patients with oral cancer and 6 patients with mandublar osteomyelitis showed lower values than heal thy volunteers. Six of 12 patients with oral cancer were suffered from postoperative infection by MRSA.
2. Four antibiotics (ASPC,NTL,ISP,FLRX) increased O_2^<・->production of neutrophils to show cooperative bactericidal activities. And three of them (ASPC,NTL,FLRX) increased the expression of C3b recepter on the suface of neutrophil membrane.13EA04 : 3. O_2^<・->production of neutrophils accompanying with phagocytesis of S.aureaus (1*10^8/ml) , which were pretreated by electrolyzed-oxidizing water, showed 50% of bacteria was injured by this treatment. The expression of integrin molecules' (CD11b and CD18) on the surface of neutrophil membrane with phagocytosing S.aureus revealed that 70-80% of bacteria lost their biological activities by the treatment with electrolyzed-oxidizing water.
4. Surgical wound infected by MRSA was remarkably improved by washing with electrolyzed-oxidizing water. In treating MRSA infection patients, optimal dosage of Vancomycin^<<encircledR>>was determined by monitoring its concentration in peripheral blood.
These results suggested that it was useful to choose antibiotics based on the cooperative activity which increased O_2^<・->production of neutrophils. Electrolyzed-oxidizing water showed fatal effects on peccant bacteria, therefore, its clinical use was more recommended.
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