METHOD FOR DETERMINING SUPEROXIDE ANION RADICALS GENERATION IN BIOLOGICAL MATERIAL BY USING PHAGOCYTES Russian patent published in 1996 - IPC

Abstract RU 2064680 C1

FIELD: medicine. SUBSTANCE: method involves taking samples of microbioptates from human individual or animal in performing endoscopic examination of cavitary organs (stomach, intestine, bronchi e.t.c.) or taking pieces of noncavitary organs (liver, kidney e.t.c.) by means of biopsy needle, washing the samples with a pH 7.35 buffer mixture, drying with filtering paper, performing high precision (up to 10-5 g) bioptates weighing, comminuting with eye surgery scissors, thermostating with 0.2% water alcohol solution of triton X-100. Then the so produced comminuted bioptates are washed from triton traces and thermostated with superoxide transmutase for experimental subset and with albumin for control subset. The experimental and control comminuted bioptates are thermostated with fourth group blood plasma zymosane and nitro blue tetrazole opsonized with fourth group blood plasma at 36.7-37.0 C during 40-60 min. The reaction is stopped by adding 5M hydrochloric acid. Next to it, centrifuging is carried out and the precipitate is extracted with a mixture of dimethyl sulfoxide and chloroform taken in 2:1 proportion at 55.0-59.0 C with following spectrophotometric determination of superoxide anion radical based on reaction product in extracted matter. The obtained spectrophotometric data of optical density are recalculated for 1 mg of bioptate. The difference between the experimental and control sample values shows the superoxide anion radical concentration based on optical density of formazanes being the extracted reaction products due to superoxide anion radical and nitro blue tetrazole interaction expressed in optical density units. The prototype is not usable for the purposes of determining superoxide anion radical generation using visceral tissues phagocytes. EFFECT: enhanced effectiveness of method.

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RU 2 064 680 C1

Authors

Kogan A.Kh.

Khapugina I.V.

Rasulov M.I.

Rapoport S.I.

Pogromov A.P.

Dates

1996-07-27Published

1994-07-15Filed