Coccidiosis is caused by infection of Eimeria species and an significant parasitic disease in poultry. Various kinds of natural products have been studied to find alternative treatments for coccidiosis in chickens, but the effect of Houttuynia cordata on Eimeria infection has not been investigated. The aim of this study is to study the anticoccidial effect of H. cordata extract (HCE) in chickens after oral infection by Eimeria tenella. Anticoccidial effects of the HCE was evaluated in chickens after oral infection with E. tenella. This study was performed on threeday- old chicks (n = 30). These animals were divided into 3 groups; HCE 0.2% treated/infected (n = 10), HCE untreated/infected (n = 10) and non-infected control (n = 10). The effect of HCE on E. tenella infection was assessed by two parameters; fecal oocysts shedding and body weights gain. the chicks fed HCE significantly reduced fecal oocysts when compared to the E. tenella-infected group fed standard diets (p<0.05). Furthermore, the HCE-based diet improved weight loss due to E. tenella infection. Our data shows that HCE had significant antiprotozoal activity against E. tenella. These findings may have implications for the development of anticoccidial drugs.

Anti-microbiological effects of xanthorrhizol, ie., extract from curcuma xanthorrhiza and extract from houttuynia cordata Thunb. against influenza virus and E. coli O157 were tested. From the influenza experiments, the effects were shown above 93 % in case of houttuynia cordata Thunb. extract, however, the effects was not shown in case of xanthorrhizol. The effects were sustained in mixtures of houttuynia cordata Thunb. and curcuma xanthorrhiza extracts. We also tested the anti-microbiological effects of hand sanitizer containing houttuynia cordata Thunb. and xanthorrhizol. The effect of hand sanitizer containing 2,000 ppm of xanthorrhizol and 500 ppm of houttuynia cordata Thunb. extract was better than that of commercialized foreign product.

Background: Hair loss related syndromes are increasing due to environmental pollution and stress. Hair care products are mainly prepared by mixing chemicals and natural extracts, such as those obtained from medicinal plants. The purpose of this study was to investigate the effects of 70% ethanol extracts from the flowers of Calendula officinalis, fruit body of Phellinus linteus, and the whole plant of Houttuynia cordata on the growth of CCD-986 cells, hair follicle dermal papilla cells (HFDPC), and 3T3-L1 cells. Methods and Results: All sample extracts at all concentrations, except for that from P. linteus fruit body at 500㎍/㎖, were cytotoxic to CCD-986 cells. However, none of the sample extracts were cytotoxic to HFDPC. The lipid differentiation of 3T3-L1 cells regulates hair regeneration via secretion of platelet derived growth factor. The 70% ethanol extract of H. cordata whole plant promoted hair growth. Adipogenesis rate significantly increased in a treatment concentration-dependent manner. Conclusions: These results suggest that 70% ethanol extracts of C. officinalis flower, P. linteus fruit body and H. cordata could be used for the development of hair care products.

Background : Recently, hair loss, which has been regarded as a mere means of middle-aged men due to stress and environmental pollution. The market for hair loss in Korea is about four trillion won and it is growing continuously. It is mainly made by mixing natural extracts such as medicinal plant. The purpose of this study was to investigate the effects of ethanol extracts of Houttuynia cordata Thunb. whole plant and Calendula officinalis L. flower extracts on the growth of fibroblasts, dermal papilla cells and lipid precursors, I want to try to make a materialization. Methods and Results : The cytotoxicity of each sample extracts treated with 50%, 100%, and 500 μg to fibroblasts, cell-viability were 107.3%, 109.6%, and 128.2%, respectively. The cytotoxicity of each sample to the dermal papilla cells was not observed. And the lipid differentiation of the lipogenic precursor cells which regulates the hairegeneration by secretion of the platelet derived growth factor. The 70% ethanol extracts of H. cordata whole plant and C. officinalis flower were showed promotes the hair growth activity. The lipolysis rate was significantly increased with increasing treatment concentration Conclusion : As a result of this study, in-vitro hair growth activity of herbal medicines for hair treatment material development was not shown to be toxic to each cell. And 70% ethanol extract of H. cordata whole plant stimulated lipid precursor cells inducing differentiation. As a result, the 70% ethanol extracts of H. cordata whole plant and C. officinalis flower have potential to developing hair-related product.

본 연구에서는 항산화 기능을 가진 자소엽, 어성초 그리고 녹차 추출물들과 이들 추출물의 혼합물을 사용하여 항산화, 미백, 세포독성실험을 진행하였다. 자소엽, 어성초와 녹차의 추출물을 동일 양으로 혼합하였을 때 처리농도가 증가함에 따라 농도 의존적으로 DPPH와 ABTS 라디칼 소거활성이 높아졌으며, 추출물을 혼합한 경우 낮은 농도인 10 μg/mL에서도 80.2%, 98.0%의 DPPH와 ABTS 라디칼을 소거시키는 우수한 항산화 효과를 나타내었다. 미백효과의 정도를 조사하기 위하여 tyrosinase 저해효과를 조사한 결과 자소엽과 녹차추출물 그리고 각 추출물의 혼합물이 농도 의존적으로 tyrosinase 저해효과가 증가되었다. HaCaT 세포를 사용한 세포독성실험의 경우 자소엽, 어성초 추출물의 경우 세포생존율이 무처리 대조군과 같거나 높게 나타났으며 특히 어성초추출물의 경우 100 μg/mL에서 무처리 대조군 보다 10% 이상의 높은 생존율을 보였다. 녹차와 각 식물 추출물 혼합물의 경우 500 μg/mL 이상에서는 무처리 대조군에 비하여 세포생존율이 감소하였다. 그러므로 세 가지 식물의 추출물 혼합물이 100 μg/mL 농도일 때 세포에 안전하며 높은 항산화 활성과 함께 tyrosinase 저해 효과가 있었다.

본 연구에서는 예비실험결과 높은 총 페놀 화합물 함량(17.71 mg/g)을 나타낸 어성초 60% 메탄올 추출물의 항산화 효과 및 신경세포 보호효과를 알아보기 위해 다양한 연구를 진행하였다. 어성초의 DPPH와 ABTS radical 소거 활성 및 FRAP assay결과 농도 의존적인 경향이 나타났으며, 높은 항산화 활성을 보여주었다. MTT, LDH assay를 통한 신경세포 보호효과를 측정한 결과 MTT 실험에서는 어성초 60% 메탄올 추출물