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combretum leprosum/cancro
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Synthesis and biological evaluation of new 3-amino-2-azetidinone derivatives as anti-colorectal cancer agents.
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Several synthetic combretastatin A4 (CA-4) derivatives were recently prepared to increase the drug efficacy and stability of the natural product isolated from the South African tree Combretum caffrum. A group of ten 3-amino-2-azetidinone derivatives, as combretastatin A4 analogues, was selected
The biology of the combretastatins as tumour vascular targeting agents.
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The tumour vasculature is an attractive target for therapy. Combretastatin A-4 (CA-4) and A-1 (CA-1) are tubulin binding agents, structurally related to colchicine, which induce vascular-mediated tumour necrosis in animal models. CA-1 and CA-4 were isolated from the African bush willow, Combretum
Integration of medicinal plants into the traditional system of medicine for the treatment of cancer in Sokoto State, Nigeria
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This study was designed to explore and record various medicinal plants integrated into the traditional system of medicine for the treatment of cancer. The traditional system of medicine is a routine practiced among the indigenous ethnic groups of Sokoto state. A semi-structured questionnaire was
Nanoencapsulation of triterpene 3β,6β,16β-trihydroxylup-20(29)-ene from Combretum leprosum as strategy to improve its cytotoxicity against cancer cell lines
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The pentacyclic triterpene 3β,6β,16β-tri-hydroxilup-20(29)-ene is a natural product produced by the Brazilian medicinal plant Combretum leprosum. Its cytotoxicity has been previously reported against breast cancer cell lines. The low water solubility of this natural product, that hampers its
Dynamic bioluminescence and fluorescence imaging of the effects of the antivascular agent Combretastatin-A4P (CA4P) on brain tumor xenografts.
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Combretastatin A-4 (CA4) is a natural product isolated from Combretum caffrum that inhibits tubulin polymerization by binding to the colchicine-binding site. A corresponding water soluble pro-drug (referred to as CA4P), has undergone extensive clinical trials and has been evaluated in pre-clinical
Anti-tumor and anti-vascular effects of the novel tubulin-binding agent combretastatin A-1 phosphate.
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The combretastatins are derived from an African medicinal plant Combretum caffrum (Combretaceae). They have previously been shown to be potent inhibitors of microtubule assembly that cause marked haemorrhagic necrosis in murine subcutaneous tumors. Promising clinical trial results with
Cytotoxic Stilbenes and Derivatives as Promising Antimitotic Leads for Cancer Therapy.
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The growing incidence of cancer, the toxic side-effects associated with conventional chemotherapeutic agents and the development of multidrug resistance (MDR) drive the search for novel and more effective drugs with multi-target activity and selectivity towards cancer cells. Stilbenes are a group of
In vitro antitumor effect of a lignan isolated from Combretum fruticosum, trachelogenin, in HCT-116 human colon cancer cells.
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The use of natural products in therapeutics has been growing over the years. Lignans are compounds with large pharmaceutical use, which has aroused interest in the search for new drugs to treat diseases. The present study evaluated the cytotoxicity of (-)-trachelogenin, a dibenzylbutyrolactone type
Combretastatin A4 phosphate has primary antineoplastic activity against human anaplastic thyroid carcinoma cell lines and xenograft tumors.
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Anaplastic thyroid carcinoma (ATC) is a fatal malignancy the clinical outcome of which is unaltered by current therapeutic modalities. A recent phase 1 clinical trial of combretastatin A4 phosphate (CA4P) produced a long-lasting total remission in a patient with ATC. CA4P is a tubulin-binding agent
Antineoplastic agents. 443. Synthesis of the cancer cell growth inhibitor hydroxyphenstatin and its sodium diphosphate prodrug.
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A structure-activity relationship (SAR) study of the South African willow tree (Combretum caffrum) antineoplastic constituent combretastatin A-4 (3b) led to the discovery of a potent cancer cell growth inhibitor designated phenstatin (5a). This benzophenone derivative of combretastatin A-4 showed
Phytochemistry and pharmacogenomics of natural products derived from traditional Chinese medicine and Chinese materia medica with activity against tumor cells.
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The cure from cancer is still not a reality for all patients, which is mainly due to the limitations of chemotherapy (e.g., drug resistance and toxicity). Apart from the high-throughput screening of synthetic chemical libraries, natural products represent attractive alternatives for drug
Combretastatin CA-4 and combretastatin derivative induce mitotic catastrophe dependent on spindle checkpoint and caspase-3 activation in non-small cell lung cancer cells.
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Combretastatin A-4 (CA-4), a natural stilbenoid isolated from Combretum caffrum, is a new vascular targeting agent (VTA) known for its antitumor activity due to its anti-tubulin properties. We investigated the molecular mechanisms leading to cell death in non-small cell lung cancer H460 cells
Targeting tumour vasculature: the development of combretastatin A4.
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The requirement for neovascularisation to permit the development of solid tumours beyond a threshold size, has focused attention on the therapeutic potential of agents that prevent angiogenesis. The multistep nature of angiogenesis presents several targets for intervention, including the inhibition
The natural triterpene 3β,6β,16β-trihydroxy-lup-20(29)-ene obtained from the flowers of Combretum leprosum induces apoptosis in MCF-7 breast cancer cells.
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BACKGROUND
The 3β, 6β, 16β-trihydroxylup-20(29)-ene (TTHL) is a pentacyclic triterpene obtained from the medicinal plant Combretum leprosum Mart. In folk medicine, this plant is popularly known as mofumbo, cipoaba or mufumbo, and is used to treat several diseases associated with inflammation and
Preliminary antiproliferative effects of some species of Terminalia, Combretum and Pteleopsis collected in Tanzania on some human cancer cell lines.
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Methanolic extracts (25 microug/ml) of species belonging to the genera of Combretum, Terminalia and Pteleopsis, collected during a field expedition in Tanzania in 1999, were screened for their antiproliferative and cytotoxic effects against three human cancer cell lines (HeLa, cervical carcinoma; T
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