Academic literature on the topic 'Houttuynia'

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Journal articles on the topic "Houttuynia"

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Wu, Xing-Pan, Tian-Shun Wang, Zi-Xin Yuan, Yan-Fang Yang, and He-Zhen Wu. "Mechanism of Compound Houttuynia Mixture as an Anti-COVID-19 Drug Based on Network Pharmacology and Molecular Docking." Natural Product Communications 16, no. 5 (May 2021): 1934578X2110167. http://dx.doi.org/10.1177/1934578x211016727.

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Objective To explore the anti-COVID-19 active components and mechanism of Compound Houttuynia mixture by using network pharmacology and molecular docking. Methods First, the main chemical components of Compound Houttuynia mixture were obtained by using the TCMSP database and referring to relevant chemical composition literature. The components were screened for OB ≥30% and DL ≥0.18 as the threshold values. Then Swiss Target Prediction database was used to predict the target of the active components and map the targets of COVID-19 obtained through GeneCards database to obtain the gene pool of the potential target of COVID-19 resistance of the active components of Compound Houttuynia mixture. Next, DAVID database was used for GO enrichment and KEGG pathway annotation of targets function. Cytoscape 3.8.0 software was used to construct a “components-targets-pathways” network. Then String database was used to construct a “protein-protein interaction” network. Finally, the core targets, SARS-COV-2 3 Cl, ACE2 and the core active components of Compound Houttuyna Mixture were imported into the Discovery Studio 2016 Client database for molecular docking verification. Results Eighty-two active compounds, including Xylostosidine, Arctiin, ZINC12153652 and ZINC338038, were screened from Compound Houttuyniae mixture. The key targets involved 128 targets, including MAPK1, MAPK3, MAPK8, MAPK14, TP53, TNF, and IL6. The HIF-1 signaling, VEGF signaling, TNF signaling and another 127 signaling pathways associated with COVID-19 were affected ( P < 0.05). From the results of molecular docking, the binding ability between the selected active components and the core targets was strong. Conclusion Through the combination of network pharmacology and molecular docking technology, this study revealed that the therapeutic effect of Compound Houttuynia mixture on COVID-19 was realized through multiple components, multiple targets and multiple pathways, which provided a certain scientific basis of the clinical application of Compound Houttuynia mixture.
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Xia, Ting, Qi Dan Chen, Jian Kang Wang, Jing Zeng, and Jing Yan Guo. "The Preparation and Detection of Quality Standard about Houttuynia Spray." Advanced Materials Research 989-994 (July 2014): 723–26. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.723.

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To explore of houttuyniae cordata quercetin best extraction solution and detection of quality standard about houttuynia spray. The study extracted quercetin from houttuyniae cordata using alcohol water extraction, ultrasonic extraction and supercritical CO2 extraction respectively, and then choosed the best solution to prepare sprays of houttuynia cordata. To conform the state pharmaceutical quality standards, quality standards were detected from four aspects in spray volume of each press, particle size, injection experiment and installation. The method of oultrasonic extraction was the best extraction method, and the concentrations of 70% ethanol was the most efficient extraction of quercetin.The technology of spray preparation is fast and feasible, and the method of content detection is reliable.These results showed houttuyniae cordata could develop spray and conform the state pharmaceutical quality standards.
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Wang, Zhen, Xiao Han, and Xiao-Yue Hong. "Three new species of Leipothrix Keifer (Acari: Eriophyidae) from China." Systematic and Applied Acarology 22, no. 12 (November 14, 2017): 2023. http://dx.doi.org/10.11158/saa.22.12.1.

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In this paper, three new species of the genus Leipothrix from China are described and illustrated: Leipothrix houttuyniae sp. nov. on Houttuynia cordata Thunb. (Saururaceae), Leipothrix rubicordis sp. nov. on Rubia cordifolia L. (Rubiaceae), Leipothrix sambucus sp. nov. on Sambucus javanica Blume (Adoxaceae). All are vagrants causing no apparent damage to their host plants. A key to species of Leipothrix in China are provided.
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Li, Jiao-Jiao, Guo-Dong Chen, Hong-Xia Fan, Dan Hu, Zheng-Qun Zhou, Kang-Hua Lan, Hui-Ping Zhang, Hideaki Maeda, Xin-Sheng Yao, and Hao Gao. "Houttuynoid M, an Anti-HSV Active Houttuynoid from Houttuynia cordata Featuring a Bis-houttuynin Chain Tethered to a Flavonoid Core." Journal of Natural Products 80, no. 11 (November 3, 2017): 3010–13. http://dx.doi.org/10.1021/acs.jnatprod.7b00620.

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HE, YU-KE, RUVISHIKA S. JAYAWARDENA, PATTANA KAKUMYAN, and YONG WANG. "Taxonomy and phylogeny of Fusarium houttuyniae and F. liriopes spp. nov. (Hypocreales, Nectriaceae) from China." Phytotaxa 603, no. 3 (July 20, 2023): 260–70. http://dx.doi.org/10.11646/phytotaxa.603.3.5.

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Moniliaceous hyphomycetes were collected from leaves of Houttuynia cordata and Liriope platyphylla in Guang Xi Medicinal Botanical Garden, Guangxi Province, China. Morphological characteristics and multi-gene phylogenetic analyses of the calmodulin (cmdA), RNA polymerase II second largest subunit (rpb2), translation elongation factor 1-alpha (tef1), and β-tubulin (tub2), showed that four Fusarium strains represent two novel species viz. Fusarium houttuyniae and F. liriopes spp. nov and are introduced with full descriptions, illustrations, and notes herein.
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Kokoška, L., and V. Rada. "Antibacterial activity of houttuynin sodium bisulphate (HSB)." Czech Journal of Food Sciences 19, No. 1 (February 7, 2013): 37–40. http://dx.doi.org/10.17221/6572-cjfs.

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Houttuynin sodium bisulphate (HSB), a-hydroxyl-capryl-ethyl-sodium-sulphonate, is a product formed by reacting sodium bisulphate with houttuynin, which is obtained from a medicinal herb Houttuynia cordata Thunb. The antibacterial activity of HSB was measured by optical density. Minimum inhibitory concentrations at 50% and 90% inhibition level (MIC50&nbsp;and MIC90) for Escherichia coli varied from 0.5 to 0.6 mg/ml and from 2.6 to 2.7 mg/ml, respectively. For Staphylococcus aureus MIC50&nbsp;and MIC90&nbsp;varied from 0.2 to 0.3 mg/ml and from 0.4 to 0.5 mg/ml, respectively. In comparison with MIC of antibiotics currently used for treatment of disorders caused by S. aureus or by E. coli were MICs of HSB relatively high and general antibacterial activity very weak.
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Wu, Yingxue, Jing Liu, Shuai Kang, Zhong Dai, and Shuangcheng Ma. "Rapid Analysis of Aristolochic Acids and Aristolactams in Houttuyniae Herba by LC–MS/MS." Molecules 27, no. 24 (December 16, 2022): 8969. http://dx.doi.org/10.3390/molecules27248969.

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Houttuyniae herba, the Saururaceae plant Houttuynia cordata Thunb., has multiple therapeutic effects, including clearing heat, eliminating toxins, reducing swelling, discharging pus, and relieving stagnation. It has a long history as an edible and medicinal plant in China. Phytochemical studies show that the main constituents include volatile oil, flavonoids, and alkaloids. Aristolactam is a major alkaloid with a structure similar to toxic aristolochic acids. However, there has been no systematic study on aristolochic acids and alkaloids in Houttuyniae herba. Therefore, in this study, an LC–MS/MS method was developed to simultaneously detect seven alkaloids and five aristolochic acids in Houttuyniae herba from different origins. Six alkaloids (O-demethyl nornucifrine, N-nornucifrine, aristololactam AII, aristololactam FI, aristololactam BII, cepharadione B) were found and quantitatively determined in 75 batches of samples. Meanwhile, no aristolochic acids or aristololactams were found in Houttuyniae herba at a limit of detection (LOD) of ≤4 ng/mL. The method developed was fully validated in terms of LOD, limit of quantification (LOQ), linearity, precision, accuracy, and stability. These data clarify the content of the above safety-related components in Houttuyniae herba and provide a reference for further research into its safety.
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Chen, Shao-Dan, Ting Li, Hao Gao, Qin-Chang Zhu, Chuan-Jian Lu, Hong-Ling Wu, Tao Peng, and Xin-Sheng Yao. "Anti HSV-1 Flavonoid Derivatives Tethered with Houttuynin from Houttuynia cordata." Planta Medica 79, no. 18 (November 28, 2013): 1742–48. http://dx.doi.org/10.1055/s-0033-1351051.

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Schneider, Edward L., and Sherwin Carlquist. "SEM STUDIES ON VESSEL ELEMENTS OF SAURURACEAE." IAWA Journal 22, no. 2 (2001): 183–93. http://dx.doi.org/10.1163/22941932-90000277.

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Vessel elements in Anemopsis have simple perforation plates and alternate (sometimes scalariform) lateral wall pitting; Anemopsis has tracheids with large, densely placed pits. These conditions are in contrast with tracheary element features of Gymnotheca, Houttuynia, and Saururus, in which perforation plates are scalariform (many with notably slender bars) and with scalariform lateral wall pitting. Porose pit membrane remnants, which cannot be seen with light microscopy, are newly reported in Houttuynia and Saururus. These porose pit membranes underline the primitive nature of vessels in Gymnotheca, Houttuynia, and Saururus. The highly specialized vessels of Anemopsis may relate to entry into seasonally dry habitats, whereas Gymnotheca, Houttuynia, and Saururus may have experienced unbroken occupancy of mesic habitats.
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Liu, Zhaolin, Ming Jin, Ying Li, Jun Liu, Xianghua Xiao, Hongsheng Bi, Zhiqiang Pan, et al. "Efficacy and Safety of Houttuynia Eye Drops Atomization Treatment for Meibomian Gland Dysfunction-Related Dry Eye Disease: A Randomized, Double-Blinded, Placebo-Controlled Clinical Trial." Journal of Clinical Medicine 9, no. 12 (December 12, 2020): 4022. http://dx.doi.org/10.3390/jcm9124022.

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Purpose: To evaluate the efficacy and safety of Houttuynia eye drops (a Chinese traditional medicine) atomization treatment in meibomian gland dysfunction (MGD)-related dry eye disease (DED) patients. Methods: A total of 240 eligible patients diagnosed with MGD-related DED were assigned either Houttuynia eye drops or placebo for atomization once daily for four weeks in a multi-center, randomized, double-blind, placebo-controlled clinical study. Primary outcome evaluations used included eye symptom score (using the Chinese Dry Eye Questionnaire), meibum quality, and tear break-up time (TBUT), while safety evaluations included adverse events (AEs), visual acuity, and intraocular pressure monitoring. Indicators were measured at baseline as well as one week, two weeks, and four weeks after treatment. Results: Primary outcome measures of the Houttuynia group were improved compared with their placebo counterparts following four-week treatment. Eye symptom scores were significantly reduced relative to the baseline in the Houttuynia group (mean ± standard error of the mean, 9.00 ± 0.61) compared with the placebo group (6.29 ± 0.55; p = 0.0018). Reduction in meibum quality score in the Houttuynia group (0.91 ± 0.10) was also significantly higher compared with the placebo group (0.57 ± 0.10; p = 0.0091), while TBUT in the treatment group (6.30 ± 0.22) was also longer than in the latter (5.60 ± 0.24; p = 0.0192). No medication-related adverse events were observed. Conclusions: Atomization treatment with Houttuynia eye drops is both clinically and statistically effective for the treatment of mild to moderate MGD-related DED patients. This approach is generally safe and was tolerated well by patients.
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Dissertations / Theses on the topic "Houttuynia"

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Barahona, Padilla Sergio Paolo. "Utilización de loci microsatélites y ADN mitocondrial para evaluar la estructuración genético-poblacional de la caballa (Scomber japonicus Houttuyn, 1782) en el mar peruano." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/3767.

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La caballa Scomber japonicus (Perciformes: Scombridae) es una especie pelágica de gran importancia económica en el Perú y en varios países alrededor del mundo. A pesar de su importancia, no se han reportado estudios concernientes a la genética de poblaciones en esta especie en el Perú. Por este motivo, el objetivo de la presente tesis fue evaluar la estructuración genética de caballa en el mar peruano. Se utilizó la Región Hipervariable I (Dominio ETAS) de la Región Control Mitocondrial junto a cinco marcadores microsatélites. El análisis del marcador mitocondrial evidenció una escasa diferenciación genética entre las poblaciones estudiadas y que el recurso atravesó un proceso de expansión poblacional en el pasado. De los marcadores microsatélites solamente el locus SJT18 fue útil para el análisis genético-poblacional debido a que los cuatro marcadores restantes tuvieron serios problemas de efecto stuttering (bandas tartamudas). Este locus, al igual que el marcador mitocondrial, sugirió una escasa diferenciación entre las poblaciones. Se concluye que la caballa peruana comprende una sola unidad panmíctica lo cual refuerza la hipótesis de un único stock pesquero.
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Taşpınar, Ömer [Verfasser]. "Synthesis of Marine Steroids with Unusual Ring Systems: Eurysterol A and DELTA24-Dihydro-6-epi-Monanchosterol A and Total Synthesis of Houttuynoid B-Derivatives as Potential Antiviral Agents / Ömer Taşpınar." München : Verlag Dr. Hut, 2021. http://d-nb.info/1232847011/34.

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Chou, Shu-Chen, and 周書正. "The constituents of the Houttuynia cordata Thumb." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/39327887388110183355.

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碩士
國立成功大學
化學系碩博士班
94
Forty-four compounds were isolated from the whole plant of Houttuynia cordata Thunb. Of these, forty compounds were characterized by comprehensive analyses of their 1D and 2D NMR and mass spectra. Among them, houttuynamide A and houttuynoside A were found be new compounds. The thirty-eight known compounds were identified as aristolactam BⅡ, aristolactam AⅡ, piperolactam A, 3,4-dimethoxy-N-methyl aristolactam, lysicamine, splendidine, cepharadione B, norcepharadione B, noraristolodione, N-(1-hydroxymethyl-2-phenylethyl)benzamide, N-(4-hydroxyphenylethyl)benzamide, benzamide, 4-hydroxy benzamide, 4-hydroxy-3-methoxybenzamide, 6,7-dimethyl- 1-ribitol-1-yl-1,4- dihydroquinoxaline-2,3-dione, (1H)- quinolinone, indole-3- carboxylic acid, vomifoliol, dehydrovomifoliol, reseoside, 7-(3,5,6-trihydroxy- 2,6,6-trimethyl- cyclohexyl)but-3-en-2-one, 6-(9-hydroxy-but-7-enyl)-1,1,5- trimethylcyclohexane- 3,5,6-triol, quercitrin、quercetin-3-O-β-D-galactopyranoside, afzelin, vanillic acid, methyl vanillate, vanillin, protocatechuic acid, 4-hydroxybenzoic acid, methylparaben, p-hydroxybenzaldehyde, cis and trans-methyl ferulate,β- sitosteryl glucoside,β- sitosterol and cycloart-25-ene-3b,24-diol by comparison of their physical and spectral data with those reported in the literature. Furthermore, some of the isolated compounds were evaluated for their anti- tyrosinase and anti-oxidant activities. Cepharadione B showed the storng inhibition activity against tyrosinase. Quercitrin, quercetin-3-O-β-D-galactopyranoside, vanillic acid, protocatechuic acid showed 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical- scavenging activity of which quercitrin and quercetin-3-O-β-D- galactopyranoside have the stronger scavenging activity than Vit E.
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Liu, Yi-Chun, and 劉怡君. "Anti-Enterovirus 71 activity of Houttuynia cordata." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/49728336653053798492.

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碩士
長庚大學
基礎醫學研究所
94
Enterovirus 71 (EV71) is a positive-stranded RNA virus in the genus Enterovirus of the family Picornaviridae. EV71 infection can cause hand, foot, and mouth disease (HFMD), herpangina and associated with fatal pulmonary edema as well as severe neurological complications, including encephalitis, meningitis, and a poliomyelitis-like syndrome in children. Several major outbreaks of EV71 have occurred in recent years in Taiwan. In this study we screened 22 Chinese medicine extracts for anti-EV71 activity. We found Houttuynia cordata Thunb. can neutralize the EV71-induced cytopathic effect (CPE) in Vero cells. The 50% inhibitory concentration of H. cordata on EV71 was approximately 125.92±27.837 g/mL. A plaque reduction assay showed that H. cordata can reduce the plaque formation. H. cordata was able to reduce viral protein synthesis and also abate the apoptotic process in enterovirus 71-infected Vero cells. We concluded that H. cordata possesses antiviral activity and has a potential for development as an anti-enterovirus 71 agent.
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Kuo, Chin-Min, and 郭志敏. "Studies on the Bacteriostatic Agents of Houttuynia cordate." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/08511548179730316061.

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碩士
國立中興大學
生命科學院碩士在職專班
101
The study aimed to evaluate the effect of bacteriostasis on Staphylococcus aureus, Escherichia coli, Streptococcus pneumoniae, Hemophilus influenzae and Pseudomonas aeruginosa by four cultivars of water extracts of medicinal Houttuynia cordate. In addition, effective elements including quercetin, decanoyl acetaldehyde, and methly-n-nonylketone would be compared for the effect of bacteriostasis. Among four cultivars of water extracts of Houttuynia cordate, only had quercetin been detected. quercetin has the most amont of HC2 and HC3, HC4 the second, and HC1 the fewest. While HC2 and HC3 demonstrated the best effect of bacteriostasis, HC1 showed the worst. The result displayed that the amount of quercetin was positively correlated with the effect of bacteriostasis. In addition, different species of water extracts of Houttuynia cordate had better bacteriostasis effect on Staphylococcus aureus and Streptococcus pneumoniae than on Escherichia coli and Pseudomonas aeruginosa. In sum, the experiment had confirmed the effect of bacteriostasis of Houttuynia cordate. In addition to bacteriostasis, Houttuynia cordate could function as antioxidant, antiviral, diuretic, cough suppressant etc. The researcher has assumed that more uses of Houttuynia cordate will be discovered if deeper research regarding the mechanism of pharmacological effects of Houttuynia cordate can be undertaken.
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Liou, Guan-Ting, and 劉冠廷. "Evaluation of biological effects of various Houttuynia cordata extracts." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/h6m823.

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碩士
元培醫事科技大學
生物科技暨製藥技術系碩士班
105
Houttuynia cordata, a Saururaceae herbaceous plant, has been applied as a traditional medicine to improve immune responses and to exert anti-viral, anti-bacterial and anti-inflammatory effects.Phytochemicals in Houttuyniacordata can be divided into essential oils, polyphenols, flavonoids, alkaloids and other substances.It is known that Houttuyniacordatacontains numerous major active ingredients, such asdeCanoy acetaldehyde, lauric aldehyde, α-pinene, linlool, etc. However, different extraction methods would lead to the significant variation inactive ingredients within the product development. Using different extraction methods, the objective of this study was to compare biological activities of various Houttuynia cordata extracts.Stems and leaves of dried plants were finely ground, and then extracted with water at room temperature, 50 ºC or 70 ºC, or with 70% ethanol, ethyl acetate or chloroform at room temperature for 24h.The extracts were filtrated, vacuum-concentrated, lyophilized and stored at -20ºC.Results showed that the amount (1.58 g) of water extract from 10g ofHouttuyniacordata powder was highest, followed by those ofalcohol extract (1.27 g), chloroform extract (0.28 g) and ethyl acetate extract (0.27 g).Furthermore, the weight of the water extract isincreased as the temperature increases.Among various Houttuyniacordata extracts,the ethanol extract contained the highest amount of total polyphenols (1155 uggallic acid equivalent/g),however, the ethyl acetate extract contained the least (358 uggallic acid equivalent/g). The amounts of total flavonoidsextracted from organic solvents(813~1142 ug catechin equivalent/g) were higher than thosefrom three water extracts(~250 ug catechin equivalent/g), and the chloroform extract was the most (1142 ug catechin equivalent/g).When fatty acid compositions of the Houttuyniacordata sample were analyzed, it contained palmitic acid (C16: 0) (30.1%), α-Linolenic acid (C18: 3n-3) (21%), Oleic acid (C18: 1n-9) (15.6%), Linoleic acid (C18: 2n-6) (14.8%), Stearic acid (C18: 0) (9.3%) and others.When examined antioxidant properties, the ethanol extractexerted the strongest DPPH scavenging activity(80%) and the reduction capacity. However, the chloroform extract had the least abilities to scavenge DPPH free radicals (40%) and perform the reduction capacity.No anti-bacterial effect of Houttuyniacordataextracts was observed when using methods of disk diffusion method and minimal inhibition concentration.Since the addition of Houttuyniacordataextract at concentrations above 100 ug/ml resulted incytotoxic effect on murine RAW264.7 macrophages, a fixed concentration (50 μg/ml)of various extract was used to determine nitric oxide (NO), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in following cell culture studies.Among various extracts, the ethanol extract inhibited the production ofNO (by 28 %), TNF-a(by 27 %) and IL-6 (by 72 %).Our results showed that Houttuyniacordata extracts exerted the anti-inflammatory properties by inhibiting the production of NO, TNF-α and IL-6.In summary, active polyphenols, flavonoids and other substancesextracted from Houttuyniacordataexert antioxidant and anti-inflammatory properties, and these active compounds can be used as the development of future biopharmaceutical products.
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Lai, Wei-Hsin, and 賴暐昕. "Factors affecting functional ingredient contents in Houttuynia cordata Thumb." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7qd584.

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碩士
國立臺灣大學
園藝暨景觀學系
106
Houttuynia cordata Thunb. is rich in nutrient and functional constituents, and it’s valuable for industrial application. In order to improve the quality and yield of pig thigh, the antioxidant activity in different tissues and leaf position were studied and followed by the effect of light quality, nitrogen concentration and exogenous salicylic acid and methyl jasmonate application on growth and endogenous compounds of pig thigh. First of all, in the part of different tissues and leaf position, the samples were divided to five parts, upper leaves, middle leaves, lower leaves, stem and root. Results showed that the DPPH scavenging activity and the total phenolic compounds were highest for lower leaves and lowest for root. Chlorogenic acid was highest in leaves. To sum up, lower leaves contained more functional constituents and less for root. Secondly, in the part of light quality, results showed that there was no significant difference for the plant growth and biomass for all treatments. Blue light increased total phenolic compounds and chlorogenic acid for 30% compared to other treatments. Blue light is suggested to be the light source for indoor cultivation and supplement light for greenhouse to improve functional constituents. Thirdly, in the part of nitrogen concentration, results showed that there was no effect on plant growth without nitrogen fertilization. The antioxidant indices were higher due to the stress of nutrient deficiency. There was no significant difference for growth and antioxidant indices for treatments of different nitrogen concentration applications because the period of treatment maybe was too short. The antioxidants were highest for 10 and 15 mM treatments which were similar with normal fertilization formula. Furthermore, the antioxidants were decreased for higher nitrogen concentration applications. To sum up, the nitrogen concentration fertilization without adjustment for other elements in formula (6 mM phosphate, 4 mM potassium, trace element added) is suggested to be 10 to 15 mM to improve functional constituents. The last part of this study is about the effects of exogenous salicylic acid and methyl jasmonate application on growth and endogenous compounds. In the salicylic acid experiment(0、0.25、0.5、1 and 2 mM), there was no significant difference for plant fresh weight, dry weight, SPAD, NDVI, and Fv/Fm value. The development of leaves was retarded for 1 mM and higher concentration. The total phenolic compounds were most for 0.5 mM treatment. There was no significant difference between foliar application and drench. In methyl jasmonate experiment(0、0.25、0.5、1 and 2 mM), there was no significant difference for application concentration and method in plant growth indece. The total phenolic compounds were most for 2.0 mM treatment with drench. The results suggest that the optimum exogenous application of salicylic acid is 0.5 mM for drench and methyl jasmonate 2.0 mM for drench. The functional constituents were affected by the different tissues and leaf position. Moreover, the growth and the functional constituents of pig thigh were also affected by light quality, nitrogen concentration and exogenous salicylic acid and methyl jasmonate application. This study established the optimum cultivation conditions for pig thigh cultivation and elevated the overall benefit of medical industry.
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Chang, Wei-Chung, and 張韋琮. "Studies on genetic variation of Houttuynia cordata Thunb. in Taiwan." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/44942611852314416788.

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碩士
國立中興大學
農藝學系
90
Studies on genetic variation of Houttuynia cordata in Taiwan. Summary This studies on genetics variation of populations and cultured lines of Houttuynia cordata Thunb. in different zones of Taiwan was preserve of germplasms and development and application of products for reference. From July to December in 2000, wild populations and cultured lines were collected in each zone of Taiwan, and then preceded a gamogenesis in the greenhouse of National Chung Hsing University. 150 days later, plant characters of each populations and lines were investigated. Moreover, applying RAPD to analysis polymorphisms of populations and lines can realize variation of genomes. The results were as follows: 1.Of the populations of H. cordata Thunb., in different zones of Taiwan, the means of plant characters, relationship among characters, and statistics of Hotelling’s T2 all showed the significant difference of ecology among populations. 3 clusters were be classified in ten populations according to analysis of principal component analysis and cluster analysis: The cluster Ⅰ including Chilung, Fuhsing, Shengan, Renai, Lukang, Meinung and Hengchun, the cluster Ⅱ including Yangmin and Taitung, and the cluster Ⅲ including Suao. 2.Utilizing 40 primers proceed to RAPD for 10 populations of H. cordata Thunb. of Taiwan, 14 primers could showed polymorphisms, and all 101 bands appear, and 72 bands would be regarded as the markers. The similarity coefficient of populations, from 0.341 to 0.988, showed populations have greater genetic variation. 3 clusters were be classified according to cluster analysis : the cluster Ⅰ including Chilung, Yangmin, Meinung, Shengan, and Renai, the cluster Ⅱ including Fuhsing, Taitung and Hengchun, and cluster Ⅲ including Suao. 3.Using plant characters of 24 H. cordata Thunb. cultured lines to proceed with ANOVA found significant difference among lines. 4.Utilizing 14 primers proceed with RAPD for 24 cultured lines of H. cordata Thunb. of Taiwan, only 8 primers could showed polymorphisms, and all 23 bands appear, and 18 bands would be regarded as the markers. The similarity coefficient of lines, from 0.281 to 1.000, also showed populations have great genetic variation. 2 clusters were be classified according to cluster analysis: the cluster Ⅰ, 21 lines, inclusive of Taitung 1, Yunlin, Luodong, Hualian, Chishang, Changbin 1, Donghe, Taimali, Taitung 2, Changbin 2, Chenggong, Yuanli 1, Kouhu, Caotun, Xinshe, Fengyuan, Cuoxing, Taipei, Tamsui, Longtan, Fangyuan, and the cluster Ⅱ , 3 lines, inclusive of Pitou, Yuanli 2, Yongjing.
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HSU, YUNG-SHENG, and 許永聖. "Study on the Optimization of Water Extraction from Houttuynia cordata." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/638hbb.

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Abstract:
碩士
大葉大學
生物科技碩士在職學位學程
104
This study aimed at finding the optimum extraction conditions of Houttuynia cordata over the boiling water method. In this study, we applied the L9 (3³) orthogonal test to explore optimum extraction parameters to assess the relationship between antibacterial activity total polysaccharides content, antibacterial activity and total flavonoids content. The results showed that the best Houttuynia cordata total flavonoids extraction conditions were:the solid-liquid ratio of 9g/90ml, temperature of 80℃ and time of 45 minutes. The best total Polysaccharides extraction conditions were:the solid-liquid ratio of 9g/90ml, temperature of 100℃ and time of 45 minutes. The optimal Staphylococcus aureus antibacterial effect conditions were:the solid-liquid ratio of 4.5g/90ml, temperature of 90℃ and time of 30 minutes. The antibacterial effect was 93.4 percent. The optimal Escherichia coli antibacterial effect conditions were:the solid-liquid ratio of 9g/90ml, temperature of 80℃ and time of 45 minutes. The antibacterial effect was 71.5 percent. The antibacterial effect of Houttuynia cordata water extract is greater on Staphylococcus aureus than on Escherichia coli. Under the extraction conditions, the temperature shouldn’t be high and the time shouldn’t be long. But such antibacterial effect of either total flavonoids or the total polysaccharides content is not proportional.
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Chen, Wei-Ting, and 陳維婷. "Protective effects of Houttuynia cordata against acetaminophen induced hepatotoxicity in mice." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/72806918158110941344.

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Abstract:
碩士
中國醫藥大學
營養學系碩士班
101
Acetaminophen (APAP), a commonly used antipyretic and analgesic agent, could cause acute liver injury by overdose. Houttuynia cordata Thunb is a medicinal plant used in traditional Chinese medicine. The aim of this study was to examine the hepatoprotective effects of Houttuynia cordata Thunb aqueous extract (HCE) against APAP-induced injury. Male C57BL/6JNarL mice were randomly divided into normal group, control group and HCE group. After 5 weeks supplementation, mice were treated by APAP intraperitoneally, and killed after 24 hours. Blood and organs from each mouse were collected. Results showed that the intake of HCE significantly alleviated APAP-induced aspartate aminotransferase (AST) and alanine aminotransferase (ALT) elevation; retained glutathione (GSH), glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase (CAT) and total antioxidant capacity (TAC) activities or levels; reduced the level of inflammatory related factors such as interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and monocyte chemotactic protein-1 (MCP-1). Furthermore, HCE intake attenuated cytochrome P2E1 (CYP2E1) activity and malondialdehyde (MDA) production. These findings supported that pretreatment of HCE protected mice liver against APAP-induced oxidative and inflammatory injury. Key words:acetaminophen, Houttuynia cordata Thunb, anti-oxidation, anti-inflammation
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Books on the topic "Houttuynia"

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Hernández, José J. Castro. Synopsis of biological data on the Chub Mackerel (Scomber japonicus Houttuyn, 1782). Rome: Food and Agriculture Organization of the United Nations, 2000.

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Book chapters on the topic "Houttuynia"

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Zhang, Qi-wei. "Houttuynia cordata Thunb 鱼腥草 (Yuxingcao, Houttuynia)." In Dietary Chinese Herbs, 623–30. Vienna: Springer Vienna, 2015. http://dx.doi.org/10.1007/978-3-211-99448-1_71.

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Tang, Weici, and Gerhard Eisenbrand. "Houttuynia cordata Thunb." In Chinese Drugs of Plant Origin, 589–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-73739-8_75.

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Bährle-Rapp, Marina. "Houttuynia Cordata Extract." In Springer Lexikon Kosmetik und Körperpflege, 261. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_4814.

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Pramanik, Atreyi, Aashna Sinha, Kundan Kumar Chaubey, and Deen Dayal. "Bioactive Compounds and Pharmaceutical Importance of Houttuynia cordata Rhizome." In Medicinal Roots and Tubers for Pharmaceutical and Commercial Applications, 27–38. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/b22924-3.

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Ramachandran, Somasundaram, and Veeramaneni Alekhya. "Chemical Composition and Biological Properties of Houttuynia Cordata Thunb.: A Review." In Biomolecules and Pharmacology of Medicinal Plants, 221–29. New York: Apple Academic Press, 2023. http://dx.doi.org/10.1201/9781003284468-18.

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Hou, Bi-Yu, Li Zhang, and Guan-Hua Du. "Houttuynin." In Natural Small Molecule Drugs from Plants, 415–19. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8022-7_69.

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Wagner, Hildebert, Rudolf Bauer, Dieter Melchart, Pei-Gen Xiao, and Anton Staudinger. "Herba Houttuyniae cordatae — Yuxingcao." In Chromatographic Fingerprint Analysis of Herbal Medicines, 59–69. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0763-8_6.

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Conference papers on the topic "Houttuynia"

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Wu, Jun, Ya Tang, Xiao-Xia Meng, Hong-Xia Li, and Wei Tang. "Lead Absorption and Accumulation in Houttuynia cordata Thunberg and Hygienic Safety Evaluation." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2009). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5163013.

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Wang, Jinfan, Astrid Sasse, and Helen Sheridan. "A scientific evaluation of Traditional Chinese Medicine (TCM) Houttuynia cordata Thunb (Yu xing cao): a case study." In GA – 69th Annual Meeting 2021, Virtual conference. Georg Thieme Verlag, 2021. http://dx.doi.org/10.1055/s-0041-1736922.

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Chen, Weiwei, Jia Lin, Shangyuan Feng, Hao Huang, Yun Yu, Duo Lin, and Rong Chen. "Surface-enhanced Raman scattering (SERS) spectroscopic analysis of herba houttuyniae decoction (HHD)." In SPIE/COS Photonics Asia, edited by Qingming Luo, Xingde Li, Ying Gu, and Yuguo Tang. SPIE, 2014. http://dx.doi.org/10.1117/12.2070809.

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