• Mycobiology
• /
• 제39권1호
• /
• pp.7-11
• /
• 2011

Shimizuomyces paradoxus showed no inhibitory effect against plant pathogen fungi, such as Fusarium oxysporum f. sp. lycopersici and Alternaria solani. The S. paradoxus culture filtrate showed higher seed germination and seedling growth rates in canola than distilled water and potato-dextrose broth. A conidial suspension of $1.0{\times}10^4/mL$ resulted in the highest growth stimulating effects on total plant length, and fresh and dry weight of shoots and roots in cucumber, when compared to the highest suspension concentration. Total plant length and shoot weight increased with the foliar spray treatment, and root length and root weight increased by simultaneous treatments of soil drenching and foliar spray in cucumber. Lower concentrations of the S. paradoxus conidial suspension increased the harvest of tomato fruit.

• 한국미생물·생명공학회지
• /
• 제18권4호
• /
• pp.327-330
• /
• 1990

Thalictrum rugosum 세포배양에서 여러 가지 식물생장 조절물질이 세포증식 및 berberine 생산에 미치는 영향을 조사하였다. 조사된 식물생장 조절물질들 중에서 indole-3-acetic acid(IAA)가 berberine 생산에 가장 적합함을 알 수 있었고 그 최적농도는 1$\mu \textrm m$ 이었다. 비교 기준인 2,4-D의 사용결과에 비할 때 60이상의 생산량 상승효과가 있었으며, cytokinin인 6-benzylaminopurine(BA)를 동시에 사용하는 것보다 IAA만을 단독으로 사용하는 것이 더 효과적이다.

• 한국식품영양과학회지
• /
• 제38권7호
• /
• pp.832-838
• /
• 2009

저온 진공 공정으로 건조된 비트를 유기용매로 추출하여 이들 비트 추출물 및 분획물들에 의한 인체 결장암 및 위암세포에 대한 증식 및 세포 내 활성산소종 억제 효과에 대해 검토하였다. 인체 결장암세포(HT-29)의 경우, A+M 추출물은 0.5 mg/mL 첨가농도에서 65%의 암세포 증식 억제효과를 나타내었고(p<0.05), MeOH 추출물은 A+M 추출물과 비교하였을 때 전반적으로 낮은 활성을 나타내었음을 관찰하였다. 건조 비트 추출물을 hexane, 85% aq. MeOH, BuOH, water로 다시 추출하여 얻어진 각각의 분획물들을 농도별로 처리하였을 때 특히 hexane 및 85% aq. MeOH 분획물은 낮은 농도에서부터 활성을 나타내어 0.5 mg/mL 농도에서 76% 이상의 높은 암세포 증식 억제효과(p<0.05)를 나타내었다. 인체 위암세포(AGS)에 대한 결과에서 A+M 추출물은 인체 결장암세포(HT-29)의 결과와 비교했을 때 암세포증식 억제효과가 높았고, MeOH 추출물은 A+M 추출물에 비해 낮은 활성을 나타내었으나 앞서 인체 결장암세포(HT-29)에 비해 다소 높은 암세포 성장 억제효과를 보였다. 건조 비트 추출물의 분획물들을 농도별로 인체 위암세포(AGS)에 처리했을 때 hexane과 85% aq. MeOH 분획물은 앞서의 인체 결장암세포(HT-29)의 결과와 유사하게 낮은 농도에서부터 활성이 나타나 0.25 mg/mL 이상의 농도에서 77% 이상의 억제효과가 나타났다. 인체 섬유육종세포(HT1080) 내 활성산소종 억제 실험에서 건조 비트 A+M 및 MeOH 추출물은 농도 의존적으로 측정시간 120분 동안 $500{\mu}M$ $H_2O_2$만을 처리한 control군에 비해 세포 내 활성산소종을 크게 억제시켰다. 건조 비트 분획물들을 인체 섬유육종세포(HT1080)에 처리했을 때 첨가농도 0.1 mg/mL로 처리하였을 때 BuOH 분획물을 제외한 기타 분획물들의 경우 control군보다는 낮은 수치를 나타내어 우수한 항산화 활성을 보였다. 첨가농도 0.25 mg/mL에서 85% aq. MeOH 분획물은 세포 내 활성산소종을 감소시키는데 우수한 능력을 나타내었고 hexane과 BuOH 분획물은 $500{\mu}M$ $H_2O_2$만을 처리한 control군에 비해서는 활성산소종을 감소시켰으나 blank 군보다는 높았다. 따라서 세포 내 활성산소종 감소에 의한 항산화 활성은 85% aq. MeOH 분획물에서 높았고 water 분획물의 효과가 가장 낮았음을 살펴 볼 수가 있었다.

• 한국식품조리과학회지
• /
• 제20권4호
• /
• pp.365-370
• /
• 2004

The study was carried out to evaluate the radical scavenging activity, and antimutagenic and anticancer effects in Korean soybean paste(doenjang) added with various mushrooms. Ganoderma lucidum doenjang(Gl-TD) showed significant inhibitory activity against the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, with an IC$\sub$50/ value of 245$\mu\textrm{g}$/$m\ell$. In contrast, the other doenjang varieties appeared to have weaker antioxidant activity. Four kinds of doenjang didn't have any antimutagenic activity against N-methyl-N'-nitro-N-nitrosoguanidine(MNNG) by adding of 5mg/plate, but exhibited a strong inhibitory effect(55∼70%) against aflatoxin B$_1$(AFB$_1$). Especially Phellinus linteus doenjang(Pl-TD) inhibited more than 70% of the mutagenicity induced by AFB$_1$ in Salmonella typhimurium TA100. On the other hand, the mushroom doenjang varieties showed relatively weak activity toward MNNG in SOS chromotest, their inhibitory rate ranging from 23% to 33%. Methanol extracts of Gl-TD and Pl-TD inhibited by 91∼92% the growth of AGS gastric cancer cells in a concentration of 100$\mu\textrm{g}$/$m\ell$.

• 한국식품저장유통학회지
• /
• 제21권6호
• /
• pp.878-884
• /
• 2014

본 연구에서 고추장 제조시 발효가 항돌연변이 효과와 in vitro 항암효과에 미치는 영향을 확인하기 위하여 고추장 제조 재료인 원료 밀, 1차발효밀, 2차발효밀, 최종발효밀, 고춧가루와 최종발효밀로 제조된 고추장의 Sal. Typhimurium TA100을 이용한 Ames test를 실시하여 MNNG에 대한 항돌연변이 효과를 살펴보았으며, HT-29 인체 대장암세포와 AGS 인체 위암세포의 성장 억제효과를 살펴보았다. 실험한 결과 원료 밀보다 1차발효밀, 2차발효밀보다 최종발효밀이 발효진행에 따라 점차 증진된 항돌연변이 효과와 in vitro 항암효과가 나타났으며 최종발효밀과 고춧가루로 제조된 고추장이 가장 높았다. 15, 30일 발효시킨 고추장이 발효되지 않은 고추장보다 더 높은 항암효과가 나타났다. 따라서 발효과정(기간)이 고추장의 항돌연변이 효과와 항암효과에 중요하게 관련되어 있다고 할 수 있으며 고추장의 주재료인 고춧가루의 capsaicin, 비타민C와 ${\beta}$-carotene 등의 작용만이 아닌 밀에서 온 발효 숙성 중에 많이 증식된 미생물 그리고 발효에 의한 생성된 다른 활성물질이 항돌연변이와 항암 효과에 관련되어 있다고 하겠다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제14권4호
• /
• pp.2607-2610
• /
• 2013

Malignant glioma, also known as brain cancer, is the most common intracranial tumor, having an extremely high mortality and recurrence rate. The survival rate of the affected patients is very low and treatment is difficult. Hence, growth inhibition of glioma has become a hot topic in the study of brain cancer treatment. Among the various isothiocyanate compounds, it has been confirmed that benzyl isothiocyanate (BITC) can inhibit the growth of a variety of tumors, including leukemia, glioma and lung cancer, both inside and outside the body. This study explored inhibitory effects of BITC on human glioma U87MG cells, as well as potential mechanisms. It was found that BITC could inhibit proliferation, induce apoptosis and arrest cell cycling of U87MG cells. In addition, it inhibited the expression of SOD and GSH, and caused oxidative stress to tumor cells. Therefore, it is believed that BITC can inhibit the growth of U87MG cells outside the body. Its mechanism may be related to the fact that BITC can cause oxidative stress to tumor cells.

• Journal of Microbiology and Biotechnology
• /
• 제13권5호
• /
• pp.706-709
• /
• 2003

Ginsenosides and polysaccharides were isolated from Panax ginseng C.A. Meyer (Family Araliaceae) by treating at low ($60^{\circ}C$, LT), mild ($100^{\circ}C$, MT), and high ($120^{\circ}C$, HT) temperatures, and their inhibitory effects on growth, infection, and VacA vacuolation of Helicobacter pylori (HP) were investigated. The molecular weights of polysaccharides decreased as the processing temperature increased. Ginseng polysaccharides inhibited the HP infection into KATO III cells, but did not inhibit growth of HP and VacA vacuolation of HeLa cells. HT polysaccharides showed the most potent inhibition with $IC_50$ value of 6.8 mg/ml. Ginseng saponins did not inhibit the infection of HP into KATO cells. However, 20(s)-protopanaxadiol showed the most potent inhibition of HP growth and vacuolation of HeLa by VacA toxin with $IC_50$ values of 0.05 and 0.067 mg/ml, respectively.

• 한국약용작물학회지
• /
• 제15권5호
• /
• pp.311-314
• /
• 2007

Vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) are the most important angiogenic molecules associated with tumor-induced neovascularization. This study was carried out to investigate inhibitory effect of extracts from root of Rehmannia glutinosa LIBOSCHITZ (Rehmannia Radix and Rehmannia Radix Preparata) on endothelial cell proliferation. The methanol extracts from the medicinal herb were fractionated into n-hexane, ethyl acetate, n-butanol and aqueous fractions. Among the four fractions, the n-butanol fraction from R. Radix on exhibited highly effective inhibition (${\approx}79%$ inhibition) on the binding of KDR/Flk-1-Fc to immobilized $VEGF_{165}$ and then ethyl acetate fraction from R. Radix (${\approx}45%$ inhibition) at the concentration of $100\;{\mu}g/ml$. The n-butanol fraction efficiently blocked the VEGF- and bFGF-induced HUVEC proliferation in a dose-dependent manner, but did not affect the growth of HT1080 human fibrosarcoma cells. The n-butanol fraction more efficiently blocked the binding of KDR/Flk-1-Fc to immobilized $VEGF_{165}$ and VEGF- and bFGF-induced human umbilical vein endothelial cell proliferation than the fraction from R. Radix Preparata. Our results suggest that Rehmannia Radix may be used as a candidate for developing anti-angiogenic agent.

• 약학회지
• /
• 제34권6호
• /
• pp.439-446
• /
• 1990

The general pharmacological actions of recombinant human growth hormone (rHGH) were investigated. It had hypothermic action but neither sedative nor analgesic action. No pharmacological effects were observed in isolated guinea pig ileum and tracheal muscle and rat fundus and uterus. Slight hypotensive action with no effect on respiration was revealed at a dose of 20 IU/kg i.v. of rHGH in rabbits. The rHGH exhibited a weak inhibitory action of glucose tolerance in normal rats, significantly lowered the blood glucose contents in adrenalectomized rats 20 min after i.v. administration (80IU/kg), and produced a significant inhibitory effect on in vitro glycerol release in epinephrine-stimulated epididymal fat pad segments of rats.

• Natural Product Sciences
• /
• 제13권2호
• /
• pp.128-131
• /
• 2007

Tumor angiogenesis is a critical step f3r the growth and metastasis of solid tumors. Vascular endothelial growth factor (VEGF) is the most important angiogenic molecule associated with tumor-induced neovascularization. VEGF exerts its activity through binding to its receptor tyrosine kinase, KDR/Flk-1, expressed on the surface of endothelial cells. This study was carried out to investigate inhibitory effect of extracts from root cortex of Paeonia suffruticosa Andrews on VEGF binding to VEGF receptor. The MeOH extract from P. suffrutiocosa Andr. inhibited the binding of KDR/Flk-1-Fc to immobilized VEGF$_{165}$ more than 45% at the concentration of 100 ${\mu}$g/mL. The MeOH extract was further fractionated into n-hexane, ethyl acetate, n-BuOH, and aqueous fractions. Among the four fractions, the ethyl acetate fraction from the root cortex of P. suffruticosa Andr. exhibited highly effective inhibition (${\approx}$ 79% inhibition) and then n-BuOH fraction (${\approx}$ 45% inhibition) on the binding of KDR/Flk-1-Fc to immobilized VEGF$_{165}$ at the concentration of 100 ${\mu}$g/mL. The ethyl acetate fraction from the root cortex of P. suffruticosa Andr. more efficiently blocked VEGF-induced human umbilical vein endothelial cell proliferation, than the growth of HT1080 human fibrosarcoma. Our results suggest that P. suffruticosa Andr. may be used as a candidate fur developing anti-angiogenic agent.