• Biomolecules & Therapeutics
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• 제18권4호
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• pp.433-441
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• 2010

Chenopodium album Linne (CAL) is a fast-growing weedy annual plant. The leaves and young shoots may be eaten as a leafy vegetable. In oriental medicine, CAL has been used for treatment of skin disease, fever, stomach ache, toothache, and paralysis. After a preliminary screening of CAL ethanol extract and its fractions obtained from CAL leaves for anti-gastritic and anti-Helicobacter pylori (H. pylori) activity, the butanol (BuOH) fraction was found to have the most significant effect. We also examined antioxidative properties of the total CAL extract and its fractions, and also betaine as an ingredient of the BuOH fraction. To investigate the antioxidant effects of CAL on gastritis, the reducing power, free radical scavenging activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH), and lipid peroxidation effects were determined. Additionally, the BuOH fraction reduced cell viability in a concentration dependent manner in human gastric cancer cell lines. The results of this study revealed that CAL has excellent antioxidant activity, and may be useful in treating gastritis and gastric cancer.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2005년도 생물공학의 동향(XVI)
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• pp.532-534
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• 2005

6종 한약재의 70% 에탄올 추출물의 Helicobacter pylori의 위내 서식을 도와주는 것으로 알려진 urease의 활성억제능은 오매(Mume Fructus)의 에탄올(70%) 추출물에서 가장 높았으며, 소목 및 연교의 추출물도 높았다. 특히, 오매의 경우 한약재 추출물을 넣지 않은 대조군과 비교하여 90% 이상의 urease 활성억제 효과를 나타내었다.

• Archives of Pharmacal Research
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• 제24권4호
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• pp.297-299
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• 2001

This study investigated the effect that some polyacetylenes and protopanaxatriol, which were isolated from heated ginseng (family Araliaceae), have on inhibiting Helicobacter pylori (HP) growth. Among the compounds tested, panaxytriol was quite effective in inhibiting HP growth with an MIC of 50 ${\mu}g/ml$. Cinsenoside Rhl and protopanaxatriol weakly inhibited $H^{+}/K^{+}$-ATPase from a rat stomach.

• 생명과학회지
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• 제13권1호
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• pp.67-72
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• 2003

위염, 위궤양 및 위암의 원인 균인 Helicobacter pylori 가균체 표면에 다량 함유하며 주된 생존 인자이며 병원성 인자인 urease를 대장균에서 발현시키고 이 효소에 대한 항체 또는 기질과의 특이 상호 작용을 이용하여 두 단계의 간편한 방법에 의하여 정제하였다. 우선 anti-H. pylori Urease IgG-Sepharose column과 urea-Sepharose column을 각각 제조하고 DEAE-Sepharose 음이온 교환수지를 통하여 1차 정제한 시료를 각각 적용하고 제반 조건에서 용출시켰다. Anti-H. pylori urease IgG-Sepharose column의 경우에는 urease 시료가 너무 강력하게 결합함으로써 극단적인 pH조건에서만 용출이 가능함이 관찰되었으므로, 100 mM 탄산 완충액(pH 10.5)으로 최종 용출하였을 때 비교적 순수한 효소를 얻었으나, 비활성이 다소 감소된 것으로 나타났다. 한편, urea-Sepharose에 적용시킨 시료는 100 mM urea-HEB 완충액(pH 7.5)으로 비교적 용이하게 용출되어 비교적 높은 순도와 비활성의 urease 효소를 얻을 수 있었으나 이 경우에는 urease의 smaller subunit인 UreA peptide band의 강도가 다소 감소한 것이 관찰되었다.

• Journal of Applied Biological Chemistry
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• 제59권1호
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• pp.19-23
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• 2016

A phenol substance was extracted from Pinus koraiensis Siebold et Zucc leaf extracts and its biological efficacy was measured. The highest content of the phenol substance contained in Pinus koraiensis Siebold et Zucc leaves was 13.5 mg/g, which was obtained when it was extracted with 80% ethanol. At a concentration of 200 mg/mL, the phenolic substances extracted with 80% ethanol and water showed antimicrobial activities against Helicobacter pylori, producing clear zones of 10 and 12 mm diameter, respectively. Pinus koraiensis Siebold et Zucc. leaf extracts were separated using a Sephadex LH-20 column and 4 fractions were obtained (fractions A-D). Fractions C and D showed the greatest inhibitory activity against Helicobacter pylori producing 10.1 and 12.3 mm clear zones, respectively. These two fractions were purified using a Sephadex LH-20 and MCI-gel column ($H_2O{\rightarrow}100%$ ethanol). Purified compounds A and B were identified as syringic acid and compound C was identified as p-coumaric acid based on $^1H$-nuclear magnetic resonance (NMR), $^{13}C$-NMR, and fast atom bombardment mass spectrometry spectra. When two or more purified compounds were mixed, a synergistic effect of anti-Helicobacter pylori activity was evident. This result indicates that extracts of Pinus koraiensis Siebold et Zucc leaves could be considered a functional food because of their high antimicrobial properties.

• 동의생리병리학회지
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• 제22권1호
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• pp.108-114
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• 2008

Present study was carried out for development of a new herb product with gastroprotective effect. Natural herbs mentioned that have gastrointenstial protective property in Donggeuibogam and reports were evaluated anti-bacterial activity against Helicobacter pylori, then Ulmus davidiana var. japonica Nakai (YGP) were selected. The material used for the test were water extract of Ulmus davidiana var. japonica Nakai. They were tested individually on HCl ethanol-induced gastric lesion in rats showed the most significant effectiveness, respectively. Then YGP was made, and tested on HCl ethanol, indomethacin-induced gastric lesion, shay ulcer and gastric secretion. Conclusions : YGP showed significant effect on HCl ethanol, indomethacin-induced gastric lesion, and Shay ulcer. It can be regarded that the antigastritic and anti-ulcerative effects of YGP is originated from reduction of total acid output identified by gastric secretion test.

• 한국식품영양과학회:학술대회논문집
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• 한국식품영양과학회 2001년도 International Symposium on Food,Nutrition and Health for 21st Century
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• pp.161-169
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• 2001

Lactic acid producing bacteria were isolated from baby feces and characterized to be used as a probiotic with anti Helicobacter pylori functions. The selected bacteria had inhibition activity on the adherance and growth of H. pylori. These bacteria had additional beneficial characteristics for the probiotic such as antibacterial activity, antitumor activity, immunostimulation activity, resistance to antibiotic and bile salt, ability to bind to the intestinal cells, and safe for the human use.

• 생약학회지
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• 제37권4호
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• pp.266-271
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• 2006

Sophorae Radix, the dried roots of Sophora flavescens Aiton (Leguminosae), has been used in oriental traditional medicine for treatment of skin and mucosal ulcers, sores, gastrointestinal hemorrhage, diarrhea, inflammation and arrhythmia. Present study was carried out for the gastroprotective effect of trifolirhizin from Sophora flavescens. This reports were evaluated antibacterial activity against Helicobacter pylori and HCl ethanol-induced gastric lesion in rats and showed the significant effectiveness. In pylorus ligated rats, the treatments of trifolirhizin showed decrease in the volume of gastric secretion and acid output. Also we evaluated the antibacterial activity against H. pylori treated with methanol extract and trifolirhizin from Sophora flavescens had a equivalent antibacterial activity with ampicillin against H. pylori at the dose of $100{\mu}g/mL$. It may be regarded that the antigastritic effects and antibacterial activity of trifolirhizin from Sophora flavescens are originated from reduction of total acid output identified by gastric secretion reduce, free radical scavenging effects and the antibacterial activity against H. pylori.

• Biomolecules & Therapeutics
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• 제17권2호
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• pp.199-204
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• 2009

In this study we investigated the protective effects of rutin, a natural plant flavonoid, on HCl/ethanol-induced gastric lesions in rats. Rutin showed the antioxidant activities, the acid-neutralizing capacities, and the inhibitory effects on the growth of Helicobacter pylori (H. pylori.), which are equivalent to control compounds. In addition, rutin significantly inhibited HCl/ethanol-induced gastric lesions. Antigastritic action of rutin may be associated with the antioxidant activities, acid-neutralizing capacities, anti-H. pylori action, and the stimulation of mucus secretion. From these results, we could suggest that rutin may be useful for the treatment and/or protection of gastritis.

• 생약학회지
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• 제35권4호통권139호
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• pp.350-356
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• 2004

In a preliminary screening of plant extracts for the antigastritic and anti- Helicobacter pylori (H. pylori) actions in rats, the ethanol extract of Amomi Semen (AS) showed positive activity in HCl Ethanol-induced gastric lesions and H. pylori. Among the systematic fractions of hexane, chloroform, butanol and water, the most potent butanol fraction significantly reduced HCl, Ethanol-induced gastric lesions at the oral dose of 350 mg/kg. Also butanol fraction has an inhibitory effect on the growth of H. pylori $(MIC=1.43\;{\mu}g/mL)$. In pylorus ligated rats, butanol fraction showed decrease in the volume of gastric secretion and acid output, of which effects were stronger in other fractions. We isolated 6 subfractions by column chromatography. The protective effects of 6 subfractions of Amomi Semen were also significant in the HCl, Ethanol induced gastric lesion model. These results might suggest that they had inhibitory action in gastric lesion through inhibition of gastric acid secretion. Butanol fraction of AS can be applied as treatment of H. pylori. Butano fractions and ethanol extract of AS was carried out or the development of a new gastroprotective supplementary product.