piper/zhubný nádor

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Effect of Piper chaba Hunter, Piper sarmentosum Roxb. and Piper interruptum Opiz. on natural killer cell activity and lymphocyte proliferation.

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BACKGROUND Immune system is the most important system ofhuman body. Thaifolk doctors have used some medicinal plants as an adaptogenic drug or immunomodulatory agent. Piper chaba Hunter, Piper sarmentosum Roxb. and Piper interruptum Opiz. are used by folk doctors to activate immune response in

Four new chemical constituents from Piper pleiocarpum.

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Two new polyoxygenated cyclohexenes (1-2), one new benzoate derivative (3), and one new dineolignan (4) together with one known neolignan (5) were isolated from whole plants of Piper pleiocarpum. The structures of these compounds were determined by extensive spectroscopic methods including 1D, 2D

Anticancer principles from medicinal piper ( hú jiāo) plants.

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The ethnomedical uses of Piper ( Hú Jiāo) plants as anticancer agents, in vitro cytotoxic activity of both extracts and compounds from Piper plants, and in vivo antitumor activity and mechanism of action of selected compounds are reviewed in the present paper. The genus Piper (Piperaceae) contains

Antioxidant, antitubercular and cytotoxic activities of Piper imperiale.

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Phenolic compounds are widely distributed in Nature and act as pharmacologically active constituents in many herbal medicines. They have multiple biological properties, most notably antioxidant, antibacterial and cytotoxic activities. In the present study an attempt to correlate the phenolic

A new furofuran lignan from Piper terminaliflorum Tseng.

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The chemical investigation of whole plants Piper terminaliflorum Tseng led to the isolation of one new furofuran lignan, 7-methoxyasarinin (1), along with three known amide alkaloids (2-4) as N-3,5-dimethoxy-4-hydroxycinnamoylpyrrole (2), dihydropipercide (3) and

Methods of a national colorectal cancer cohort study: the PIPER Project.

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OBJECTIVE Colorectal cancer is one of the most common cancers, and second-leading cause of cancer-related death, in New Zealand. The PIPER (Presentations, Investigations, Pathways, Evaluation, Rx [treatment]) project was undertaken to compare presentation, investigations, management and outcomes by

Three new kavalactone dimers from Piper methysticum (kava).

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Three new dimeric kavalactones, designated as diyangonins A-C (1-3), along with two known analogs were isolated from the roots of Piper methysticum. Their structures were elucidated by means of extensive analysis of their 1D, 2D NMR, and mass spectroscopic data. All these dimers possess a skeleton

Chemical constituents from Piper hainanense and their cytotoxicities.

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Two new compounds, (Z,R)-1-phenylethylcinnamate (1) and (1R,2R,3R,6S)-pipoxide (2) were isolated from the aerial part of Piper hainanense, along with 12 known compounds, including nine benzene derivatives (4-11), one isobutylamide (12), and two polyoxygenated cyclohexene derivatives (13-14). Their

Cytotoxic activity of Piper cubeba extract in breast cancer cell lines.

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This study aimed to evaluate the cytotoxicity of a crude extract of Piper cubeba against normal and breast cancer cell lines. To prepare the extract, P. cubeba seeds were ground, soaked in methanol and dichloromethane and isolated by column chromatography. Fractions were tested for cytotoxicity

The tumor promoting effect of lime-piper betel quid in JB6 cells.

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Betel quid chewing is a general behavior in Taiwan, India, southeastern Asian and South Africa. In this study, microculture tetrazolium test (MTT) showed that the extract of lime-piper betel quid (LPB) (1.0-20 mg/ml) was toxic to JB6 cells. Cells exposed of LPB (0.1, 0.5, 1.0 mg/ml) for 7 days

Piper cubeba demonstrates anti-estrogenic and anti-inflammatory properties.

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This present study aims to investigate if P9605, an ethanolic extract of PIPER CUBEBA L, exhibits anti-estrogenic and anti-inflammatory properties. We found that P9605 significantly inhibited growth induced by beta-estradiol in MCF-7, a human breast cancer cell line. It inhibited aromatase activity,

Antifungal activities of compounds isolated from Piper abutiloides Kunth.

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Piperaceae is a family of tropical plants known to have antifungal, antibacterial, tumour-inhibitory, antiviral, antioxidant, molluscicidal and leishmanicidal activities. In this work, extracts and fractions from aerial parts of Piper abutiloides (Piperaceae), a traditional medicinal plant, were

Protective Effect of Piper aduncum Capsule on DMBA-induced Breast Cancer in Rats.

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The possible protective effect of Piper aduncum capsule on DMBA (dimethylbenz[α]anthracene)-induced breast cancer in rats was assessed by monitoring the tumor and lung metastases incidence and recording hematological and biochemical parameters and frequency of micronuclei. Mammary carcinogenesis was

Essential Oils from Neotropical Piper Species and Their Biological Activities.

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The Piper genus is the most representative of the Piperaceae reaching around 2000 species distributed in the pantropical region. In the Neotropics, its species are represented by herbs, shrubs, and lianas, which are used in traditional medicine to prepare teas and infusions. Its essential oils (EOs)

Alkaloids from piper: a review of its phytochemistry and pharmacology.

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OBJECTIVE Piper has been used for long timelike condiment and food, but also in traditional medicine around of the world. This work resumes the available and up to date work done on members of the Piperaceae family and their uses for therapeutic purposes. METHODS Information on Piper genus was

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