• 대한한의학방제학회지
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• 제30권3호
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• pp.137-143
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• 2022

Objectives : Brain-Liver axis is an important target of the chronic human diseases. Hepatic steatosis is one of the most famous disorders in the chronic diseases. This study investigated the moderating effect of beneficial herbs on the fat accumulation, which is mediated by the LXR alpha-SREBP-1c signaling pathway. Methods : In order to confirm the SREBP-1c inhibitory effect, we performed immonoblotting ananlysis using HepG2 cells and Huh 7 cells treated by T0901317, the ligand of LXRα. Results : Forsythiae suspensa water extract (FSE) was not cytotoxicity in cell lines. FSE inhibited SREBP-1c protein expression in HepG2 and Huh7 cells induced by T0901317. In addition, FSE increased the phosphorylation of LKB1, which is associated with LXR-related pathway in HepG2 and Huh 7 cells. Conclusions : These results showed that FSE activated LKB1 to suppress SREBP-1c, which protects the cells against oxidative stress.

• Natural Product Sciences
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• 제17권2호
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• pp.147-159
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• 2011

A high-performance liquid chromatography-electrospray ionization-tandem mass spectrometric method was developed to determine simultaneously eight marker constituents of Forsythiae fructus, and subsequently applied it to classify its two botanical origins. The marker compounds of Forsythia suspensa were phillyrin, pinoresinol, phillygenin, lariciresinol and forsythiaside; those of F.viridissima were arctiin, arctigenin and matairesinol. Separation of the eight analytes was achieved on a phenyl-hexyl column (150${\times}$2.0 mm i.d., 3 ${\mu}M$) using gradient elution with the mobile phase: (A) 10% acetonitrile in 0.5% acetic acid, (B) 40% aqueous acetonitrile. A few fragment ions specific to the types of lignans, among the product ions generated by collisonally induced dissociation (CID) of molecular ion clusters, such as [M-H]$^-$ or [M+OAc]$^-$ were used not only for fingerprinting analysis but for the quantification of each epimer by using multiple-reaction monitoring mode. It was shown good linearity ($r^2{\geq}$ 0.9998) over the wide range of all analytes; intra- and inter-day precisions (RSD, %) were within 9.14% and the accuracy ranged from 84.3 to 115.1%. The analytical results of 40 drug samples, combined with multivariate statistical analyses - principal component analysis (PCA) and hierarchical cluster analysis (HCA) - clearly demonstrated the classification of the test samples according to their botanical origins. This method would provide a practical strategy for assessing the authenticity or quality of the herbal drug.

• KSBB Journal
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• 제19권5호
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• pp.348-351
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• 2004

Ethanol ($70\%$) extract of Caesalpinia sappan L. and Forsythiae suspensa Vahl. showed $84\%$ and $72\%$ of anti-urease activity against Helicobacter pylori, respectively. Among the fraction of Artemisia asiatica Nakai extract using methanol ($80\%$), water, ethyl acetate and butanol ethyl acetate fraction showed $90\%$ of the anti-urease activity.

• 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.

• 대한한의학방제학회지
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• 제32권1호
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• pp.51-61
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• 2024

Objectives : This study induced oxidative stress in HepG2 cells by treating them with AA+iron and investigated the effects of forsythia suspensa extract on this stress, as well as elucidated the molecular mechanisms underlying its hepatoprotective effects. Methods : To confirm the antioxidative effects of FSE, HepG2 cells were induced with AA+iron to induce oxidative stress, followed by MTT assay. Additionally, the effect of FSE in reducing the increased ROS levels and mitochondrial damage induced by AA+iron in HepG2 cells was confirmed using FACS. Furthermore, western blot analysis were conducted to investigate the molecular mechanisms underlying the hepatoprotective effects of FSE. Results : FSE increased the decreased cell viability induced by AA+iron. Additionally, FSE normalized the expression of apoptosis-related proteins induced by AA+iron. The elevated ROS levels in HepG2 cells induced by AA+iron were reduced by FSE, and the increase in Rh123-negative cells induced by AA+iron was attenuated by FSE. Moreover, FSE activated the protein expression of AMPK and its related phosphorylating enzymes, LKB1 and ACC. Furthermore, FSE activated YAP and its upstream phosphorylating enzyme, LATS1. Conclusions : These results demonstrate that FSE has an inhibitory effect on oxidative stress induced by AA+iron and may have potential hepatoprotective effects.

• 대한화장품학회지
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• 제42권4호
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• pp.329-336
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• 2016

진피 상층부 모세혈관은 젊은 사람에 비해 노인에서 그 수와 크기가 감소되어 있어 피부에서 모세혈관이 차지하는 비율이 나이에 따라 급격히 낮아진다. 연교는 물푸레나무과에 속하는 개나리 열매를 건조한 것으로 주로 염증성 또는 항균성 질환에 오랫동안 사용되어져온 약재로서 지금까지 피부 혈관신생과 관련된 효능은 보고되지 않았다. 따라서 본 연구에서는 연교 추출물이 혈관신생과 관련된 인자들에 미치는 영향을 피부 각질형성 세포주를 이용하여 조사하고자 하였다. 우리는 먼저 연교 추출물이 혈관신생과 관련된 인자들의 발현에 어떤 영향을 주는지 알아보고자 각질형성세포에 연교 추출물을 처리하고 혈관신생과 관련된 55개 단백질의 발현을 분석하였다. 발현 변화를 보인 인자들 중 혈관내피세포 성장인자(VEGF, vascular endothelial growth factor)는 강력한 혈관신생 촉진인자로서 연교 추출물에 의해 유의하게 발현이 증가되었다. 따라서 연교 추출물이 VEGF 생성에 미치는 영향에 대해 자세히 알아보고자 연교 추출물을 농도별로 세포에 처리하고 단백질 발현과 mRNA 발현 변화를 조사한 결과, 연교 추출물은 VEGF의 유전자 수준뿐만 아니라 단백질 수준의 발현을 2배이상 농도 의존적으로 증가시켰다. 다음으로 연교 추출물에 의한 VEGF 발현 증가에 관여하는 신호전달 기전을 밝히고자 MAPK 활성을 살펴본 결과, 연교 추출물을 세포에 처리하면 5 min 내 p38 MAPK의 활성이 관찰되었으며, 특이적 억제제 전처리를 통해 p38 MAPK 활성을 억제하면 연교 추출물을 처리하더라도 VEGF의 유전자 및 단백질 발현이 완전히 억제됨을 확인하였다. 이러한 결과로부터 연교는 피부 각질형성세포에 작용하여 p38 MAPK 활성을 통해 VEGF 생성을 유도함을 알 수 있었고, 피부에서 노화에 따른 표피아래 모세혈관 손상을 개선하는데 도움을 줄 수 있는 후보 물질로서 연교의 새로운 효능을 제안한다.