• 한국균학회지
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• 제44권4호
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• pp.314-317
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• 2016

To develop a new anti-dementia acetylcholinesterase (AChE) inhibitor from edible mushrooms, AChE inhibitory activities were determined on water and ethanol extracts of various edible mushrooms from oriental medicine markets and agriculture markets. As a result, the 70% ethanol extract from Pholiota adiposa fruiting body had the highest AChE inhibitory activity of 30.6, and its water extract also had an AChE inhibitory activity of 23.8%. Therefore, we finally selected P. adiposa as a potent anti-dementia AChE inhibitor-containing mushroom. The AChE inhibitor of P. adiposa was maximally extracted when its fruiting body was treated with water for 3hr at $70^{\circ}C$ and 70% ethanol for 12 hr at $70^{\circ}C$, respectively.

• Journal of Ginseng Research
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• 제47권4호
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• pp.506-514
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• 2023

Dementia has become one of the most important diseases threatening human health. Alzheimer's disease (AD) and vascular dementia (VaD) have the highest incidence rates among the types of dementia, but until now, therapeutic methods have been limited. Panax ginseng has been used in China for thousands of years to treat dementia, and modern medical studies have found that it contains multiple active components, such as ginsenosides, polysaccharides, amino acids, volatile oils and polyacetylenes, many of which have therapeutic effects in treating AD and VaD. Studies have found that ginsenosides have multitarget therapeutic effects in treating dementia, such as regulation of synaptic plasticity and the cholinergic system, inhibition of Aβ aggravation and tau hyperphosphorylation, anti-neuroinflammation, anti-oxidation effects and anti-apoptosis effects. Other active components of Panax ginseng, such as gintonin, oligosaccharides, polysaccharides and ginseng proteins, also have therapeutic effects on AD and VaD. The effectiveness of ginseng-containing Chinese medicine compounds has also been confirmed by clinical and basic investigations in treating AD and VaD. In this review, we summarized the potential therapeutic effects and related mechanisms of Panax ginseng in treating AD and VaD to provide some examples for further studies.

• 한국수산과학회지
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• 제56권4호
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• pp.526-531
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• 2023

This study investigated the ingredients, anti-aging and anti-dementia activities of the Korean marine algae Silvetia siliquosa. The S. siliquosa solvent extracts were prepared with 70% ethanol, 80% methanol, and distilled water. The extraction yield range of various solvent extracts was 15.82-49.98%. The ethanol and methanol extracts had higher tyrosinase and collagenase inhibitory activities than those of the water extract. Meanwhile, all extracts exhibited high elastase inhibitory activity. Conversely, the methanol and water extracts exhibited the highest acetylcholinesterase inhibitory activity (IC₅₀, 0.40 mg/mL) and β-secretase inhibitory activity (IC₅₀, 0.81 ㎍/mL), respectively. These results indicate that S. siliquosa may be useful in food and pharmaceutical materials as a cosmetic and functional.

• 한국균학회지
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• 제46권4호
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• pp.447-457
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• 2018

In this paper, the screening of potent acetylcholinesterase (AChE) inhibitor - producing yeasts from wild yeasts and the condition for the production of anti-dementia AChE inhibitors are described. Among one hundred and seven non-pathogenic wild yeast strains from the waters and soils of three main rivers in Daejeon metropolitan city and midstream of Yeongsangang river in Sangju, sporogenous Saccharomyces cerevisiae WJSL0113 and asporogenous Wickerhamomyces anomalus JSF0128 were selected as useful strains for the production of potent AChE inhibitors. The AChE inhibitors of S. cerevisiae WJSL0113 and W. anomalus JSF0128 had a maximum yield when they were incubated in yeast extract-peptone-dextrose media (pH 6.0 in S. cerevisiae WJSL0113 and pH 5.0 in W. anomalus JSF0128) for 18 hr at $30^{\circ}C$, respectively.

• 대한치매학회지
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• 제22권2호
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• pp.78-80
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• 2023

• 대한의사협회지
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• 제61권12호
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• pp.758-764
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• 2018

Dementia is a clinical syndrome characterized by a cluster of symptoms and signs that manifest as difficulties in cognitive functions such as memory, psychological and psychiatric changes, and impairments in activities of daily living. As a result of worldwide trends of population aging, dementia has had a huge impact on public health in almost all countries. Disease modification therapies for dementia have not yet been developed. However, pharmacotherapy is essential in patients with dementia to combat delays in their cognitive and functional decline. In this article, we review the current pharmacotherapy for dementia. Three acetylcholinesterase inhibitors-donepezil, rivastigmine, galantamine-and memantine are the only medications that have been approved for the treatment of dementia. We present the indications, dose recommendations, side effects, and criteria for National Health Insurance coverage in Korea of these medications for dementia treatment. Although the Ministry of Food and Drug Safety in Korea has not approved any medications for managing the behavioral and psychological symptoms of dementia, some antipsychotics and antidepressants have been studied and used clinically for those purposes. Clinicians may consider vitamin E, Ginkgo biloba extract, choline alfoscerate, or omega-3 fatty acids as additional treatment options. Non-steroid anti-inflammatory drugs, estrogen hormone therapy, and statins are not generally recommended for dementia treatment. We believe that our findings will aid clinicians in the treatment of patients with cognitive decline.

• 한국미생물·생명공학회지
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• 제36권4호
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• pp.320-325
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• 2008

새로운 고품질의 전통주 개발을 위한 자료를 얻고자 시판 전통주들을 수집하여 이들의 물리화학적 성질과 항치매활성, 심혈관질환활성 및 노화억제활성등을 조사하였다. 수집된 45종의 전통주들의 에탄을 함량은 $7.0%{\sim}52.0%$로 다양하였고 pH는 $3.05{\sim}5.28$이었으며 SBB-ju 전통주가 비교적높은 1.37%의 총산을 함유하고 있었다. 항치매성 $\beta$-secretase 저해활성은 PMR-ju가 42.5%로 제일 높았으나 acetylcholinesterase와 butyrylcholinesterase 저해활성은 없거나 20% 미만의 낮은 활성을 보였다. 항고혈압성 ACE저해활성은 YON-ju가 85.6%로 조사한 모든 생리기능성 중 가장 우수하였으나 혈전용해활성은 없었다. 항노화성 전자공여능은 SBB-ju(A)가 72.2%을 보여 높았으나 SOD 유사활성과 혈전용해활성등은 매우 낮거나 없었다. 최종 항고혈압활성 우수 기능성 주류로 선발된 YON-ju의 주, 부원료 추출물들의 항고혈압 활성을 조사한 결과 인삼의 물과 에탄을 추출물, 멥쌀의 물추출물 및 국화의 에탄올추출물에서 항고혈압활성이 높은것으로 보아 발효중에 이들로부터 항고혈압성 ACE 저해물질이 용출되거나 이들의 분해산물들이 YON-ju의 항고혈압 활성을 상승시킨 것으로 사료 되었다.

• 한국해양바이오학회지
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• 제10권1호
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• pp.1-8
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• 2018

The objective of this study was to purify and characterize the ${\beta}-secretase$ inhibitor from enzymatic hydrolysates of blackfin flounder muscle, for development of a novel anti-dementia agent that may be used in the drug or functional food industries. ${\beta}-secretase$ inhibitory peptide was purified from various enzymatic hydrolysates of blackfin flounder muscle. Among six enzymatic hydrolysates, the Alcalase hydrolysate revealed highest ${\beta}-secretase$ inhibitory activity. Consecutive purification of the blackfin flounder muscle hydrolysate using Sephadex G-25 column chromatography and octadecylsilane C18 reversed phase HPLC techniques were used to isolate a potent ${\beta}-secretase$ inhibitory peptide composed of 5 amino acids, Leu-Thr-Gln-Asp-Trp (MW: 526.7 Da). The $IC_{50}$ value of purified ${\beta}-secretase$ inhibitory peptide was $126.93{\mu}M$. Results of this study suggest that peptides derived from blackfin flounder muscle may be beneficial as anti-dementia compounds in functional foods or as pharmaceuticals.

• 한국균학회지
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• 제49권2호
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• pp.243-248
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• 2021

본 연구에서는 진균류 유래의 새로운 항치매성 BChE저해물질을 생산할 목적으로 대전광역시 하천에서 분리하여 선별한 비병원성 야생효모들의 무세포추출물들을 제조하여 이들의 BChE 저해활성 측정하였다. 비병원성 야생효모들 중 S. cerevisiae WJSL0113의 무세포추출물이 85.2%의 BChE 저해활성을 보여 최종 선발하였다. 선발 균주의 BChE 저해활성은 시판 주류용 S. cerevisiae과 식용 버섯들의 추출물보다 높은 저해활성을 보였고 선발 균주인 S. cerevisiae WJSL0113을 30℃에서 48시간 배양하였을 때 가장 높은 항치매성 BChE 저해활성을 보였다.

• 한국수산과학회지
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• 제57권3호
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• pp.209-215
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• 2024

Ishige foliacea belongs to class Phaeophyceae and family Ishigeaceae. This study investigated the physiological activities of the Korean marine algae I. foliacea. Its solvent extracts were prepared with 70% ethanol, 80% methanol, and distilled water. The ethanol and methanol extracts had higher α-glucosidase (half-maximal inhibitory concentration, IC₅₀: 0.67-0.73 mg/mL), xanthine oxidase (IC₅₀: 0.25-0.28 mg/mL), and angiotensin-converting enzyme (IC₅₀: 25.29-38.28 ㎍/mL) inhibitory activities than those of the water extract. The ethanol and methanol extracts possessed high acetylcholinesterase inhibitory activity (IC₅₀: 0.78c0.97 mg/mL). Conversely, the water extract exhibited the highest β-secretase inhibitory activity (IC₅₀: 0.48 mg/mL). These results indicate that I. foliacea may be useful as a functional substance in food and pharmaceuticals with anti-diabetic, anti-gout, anti-hypertension, and anti-dementia properties.