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- W1913171210 abstract "유산 균주들을 신생아 및 성인의 분변으로부터 분리하여 그 중에서도 가장 중금속 흡착능이 크고 중금속에 내성이 있다고 사료되는 균주 KP-3를 선별하여 동정한 결과 Lactobacillus sp.으로 밝혀졌다. 동물 실험에서는 생후 4주령의 Sprague dawley male rat에게 선별한 균주 KP-3를 투여하여 혈액 및 장기 내의 중금속 축적 저해효과가 어느 정도인지 조사하였다. 실험군으로는 SD rat 한 마리당 Lactobacillus sp. KP-3와 중금속 10 ppm을 혼합하여 약 100 ml/day씩 7일간 투여하였다. 대조군으로 중금속과 멸균 생리 식염수를 혼합하여 투여한 군과 Lactobacillus sp. KP-3와 멸균 생리 식염수를 혼합하여 투여한 군, 멸균 생리 식염수 만을 투여한 군으로 분리하여 SD rat 한 마리당 약 100 ml/day씩 7일간 투여하였다. 혈액, 간장 및 신장의 시료를 채취하여 카드뮴(Cd), 크롬(Cr), 납(Pb) 등의 중금속 축적량을 측정하였다. 측정 결과 크롬(Cr)은 신장에 주로 축적되었고, 납(Pb)은 간장과 신장에 주로 많은 축적을 보였고, 실험군인 Lactobacillus sp. KP-3와 중금속을 혼합하여 투여한 군에서는 중금속만을 투여한 군보다 중금속 축적량이 낮은 것으로 나타났다. 카드뮴(Cd), 크롬(Cr), 납(Pb)의 평균 중금속 축적 저해율은 각각 41.8%, 33.4% 44.2%로 나타났다. 특히, 혈액에서의 중금속 축적 저해율은 약 70%로 매우 높게 나타났고 혈액에서의 카드뮴 축적 저해율은 100%로 나타났다. 본 실험에서 탐색하여 최적화된 유산균이라고 생각되는 Lactobacillus sp. KP-3균주는 실험 결과에 의하면 중금속 축적 저해에 효과가 있는 것으로 여겨지며, 또한 유산균이 함유된 식품을 지속적으로 섭취함으로써 체내의 중금속의 축적 억제에 도움이 크게 되리라 생각된다. To investigate the effect of lactic acid bacteria on the heavy metal adsorption from internal organs and blood, lactic acid bacteria were isolated from human feces. Some strains resistant to heavy metals were selected by incubation in agar media containing each of chrome and cadmium salts. Among them, a strain named KP-3 was ultimately chosen due to its higher growth rate in selective broth medium containing the heavy metals at the concentration of 0.01%. The strain was identified as Lactobacillus sp. based on its morphological, cultural and physiological characteristics. For evaluating the ability to prevent accumulation of heavy metals by selected Lactobacillus sp. strain in vivo, Sprague Dawley rats were fed with heavy metal salts (cadmium, chrome and lead) with or without cultured whole cells for 7 days. The amounts of heavy metals accumulated in liver, kidney and blood were analyzed. As a result, chrome was accumulated to kidney mostly, and lead was frequently found in liver and kidney. Experimental group (rats fed with lactic acid bacteria) showed less accumulation of heavy metal than control group (rats fed with saline solution). The inhibition rates of heavy metal accumulation were calculated to 41.8% (Cd), 33.4% (Cr) and 44.2% (Pb). Especially, feeding lactic acid bacteria strongly reduced accumulation of cadmium in blood. The results showed that feeding Lactobacillus sp. KP-3 could prevent the bioaccumulation of heavy metals in the living body." @default.
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- W1913171210 date "2015-02-28" @default.
- W1913171210 modified "2023-10-03" @default.
- W1913171210 title "The Inhibitory Effects of Intestine-oriented Lactobacillus sp. KP-3 on the Accumulation of Heavy Metals in Sprague Dawley rats" @default.
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- W1913171210 doi "https://doi.org/10.5352/jls.2015.25.2.164" @default.
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