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Risk of breast cancer in relation to the use of rauwolfia alkaloids.

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In a case-control study of 1881 women with breast cancer and 1523 controls with benign conditions, 65 cases (3.5%) and 64 controls (4.2%) reported having used a drug that contained rauwolfia, giving a rate ratio estimate of 0.8 (95% confidence interval, 0.5-1.1). Use that ended more than a year

The indole alkaloid meleagrin, from the olive tree endophytic fungus Penicillium chrysogenum, as a novel lead for the control of c-Met-dependent breast cancer proliferation, migration and invasion.

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Fungi of the genus Penicillium produce unique and chemically diverse biologically active secondary metabolites, including indole alkaloids. The role of dysregulated hepatocyte growth factor (HGF) and its receptor, c-Met, in the development and progression of breast carcinoma is documented. The goal

Modulation of interaction of mutant TP53 and wild type BRCA1 by alkaloids: a computational approach towards targeting protein-protein interaction as a futuristic therapeutic intervention strategy for breast cancer impediment.

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Protein-protein interactions (PPI) are a new emerging class of novel therapeutic targets. In order to probe these interactions, computational tools provide a convenient and quick method towards the development of therapeutics. Keeping this in view the present study was initiated to analyse

Alkaloids from Pachysandra terminalis inhibit breast cancer invasion and have potential for development as antimetastasis therapeutic agents.

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The aim of the present study was to identify potentially useful natural compounds for the development of novel therapeutic agents to inhibit metastasis. A phytochemical investigation of Pachysandra terminalis resulted in the isolation of seven new pregnane alkaloids, terminamines A-G (1-7), and

Reversal effect of isotetrandrine, an isoquinoline alkaloid extracted from Caulis Mahoniae, on P-glycoprotein-mediated doxorubicin-resistance in human breast cancer (MCF-7/DOX) cells.

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This study investigated the reversal effect of isotetrandrine, an isoquinoline alkaloid extracted from Caulis mahoniae, on P-glycoprotein-mediated multidrug resistance in human breast cancer doxorubicin-resistant (MCF-7/DOX) cells. RT-PCR assay and immunity histochemistry assay were used to

Yuehchukene, a bis-indole alkaloid, and cyclophosphamide are active in breast cancer in vitro.

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Yuehchukene (YCK) is a novel bis-indole alkaloid with weak estrogenic activity. Biochemical studies showed that YCK could attenuate estrogenic action. In this study, the response of MCF-7, an estrogen-receptor-positive breast cancer cell line, under different combinations of estradiol,

Telomere shortening in breast cancer cells (MCF7) under treatment with low doses of the benzylisoquinoline alkaloid chelidonine.

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Telomeres, the specialized dynamic structures at chromosome ends, regularly shrink with every replication. Thus, they function as an internal molecular clock counting down the number of cell divisions. However, most cancer cells escape this limitation by activating telomerase, which can maintain

Neurotoxicity and efficacy of combined vinca alkaloids in breast cancer.

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We treated 17 patients with metastatic breast cancer with the four-drug combination of vincristine (0.5-1.0 mg), vinblastine (4 mg/m2), doxorubicin (40 mg/m2), and cyclophosphamide (400 mg/m2). The two vinca alkaloids appeared to be synergistic in causing acute, reversible neurotoxicity, manifested

Cytotoxic Effect and Constituent Profile of Alkaloid Fractions from Ethanolic Extract of Ficus septica Burm. f. Leaves on T47D Breast Cancer Cells.

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The study aimed to investigate the profile of alkaloids in two ethyl acetate soluble fractions, namely fractions A and B from an ethanolic extract of Ficus septica leaves and cytotoxic effect on T47D breast cancer cells. Preparation of both fractions involved maceration of leaves with 70% (v/v)

Steroidal alkaloids efficient aromatase inhibitors with potential for the treatment of post-menopausal breast cancer.

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Plant derived natural products are of great interest due to their diversity in modern drug discovery. Sarcococca saligna has been used for the treatment of different diseases. The present study was aimed at isolating phytochemical constituents including Alkaloid-C (1), Dictyophlebine (2),

Screening antiproliferative drug for breast cancer from bisbenzylisoquinoline alkaloid tetrandrine and fangchinoline derivatives by targeting BLM helicase.

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BACKGROUND

The high expression of BLM (Bloom syndrome) helicase in tumors involves its strong association with cell expansion. Bisbenzylisoquinoline alkaloids own an antitumor property and have developed as candidates for anticancer drugs. This paper aimed to screen potential

New 3-alkylpyridine marine alkaloid analogues as promising antitumor agents against the CD44+/high /CD24-/low subset of triple-negative breast cancer cell line.

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Triple-negative breast cancer (TNBC) is one of the most aggressive cancers in women. Additionally, presence of residual cancer stem cells (CSC) in TNBC has challenged the efficacy of chemotherapy. Thus, the development of new molecules with potential action against CSC is fundamental. In this study,

Cytotoxic effect of the pentacyclic oxindole alkaloid mitraphylline isolated from Uncaria tomentosa bark on human Ewing's sarcoma and breast cancer cell lines.

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Preparations from Uncaria tomentosa, a South American Rubiaceae, have been used in the Peruvian traditional medicine for the treatment of infective, inflammatory and tumoral processes. In this study, the pentacyclic oxindole alkaloid mitraphylline was isolated from the dried inner bark of this plant

Phase II study of a new vinca alkaloid derivative, S12363, in advanced breast cancer.

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Vinca alkaloids are widely used in the medical treatment of breast cancer. Our study aimed to evaluate the therapeutic activity of a new vinca alkaloid derivative, S12363 (vinfosiltine), which is 36 and 72 times more cytotoxic in vitro than vincristine and vinblastine, respectively. Because phase I

[Total alkaloids of Coptidis Rhizoma combined with exercise inhibits tumor growth of orthotopically transplanted 4T1 breast cancer mice by blocking cell cycle G_1/S transformation].

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Breast cancer is one of the leading causes for cancer-related death among women worldwide. Coptidis Rhizoma has antibacterial,anti-inflammatory,anti-tumor and other pharmacological activities,but whether exercise could synergistically promote the role of RC in the treatment of breast cancer has not

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