catharanthus/kemoterapi

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Biosynthesis and regulation of terpenoid indole alkaloids in Catharanthus roseus.

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Catharanthus roseus produces a wide range of terpenoid indole alkaloids (TIA). Many of them, such as vinblastine and vincristine, have significant bioactivity. They are valuable chemotherapy drugs used in combination with other drugs to treat lymphoma and leukemia. The TIA biosynthetic pathway has

Molecular cloning and characterization of a vacuolar class III peroxidase involved in the metabolism of anticancer alkaloids in Catharanthus roseus.

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Catharanthus roseus produces low levels of two dimeric terpenoid indole alkaloids, vinblastine and vincristine, which are widely used in cancer chemotherapy. The dimerization reaction leading to alpha-3',4'-anhydrovinblastine is a key regulatory step for the production of the anticancer alkaloids in

Next Generation Antineoplastic Agents: A Review on Structurally Modified Vinblastine (VBL) Analogues.

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BACKGROUND Throughout the history of human civilizations, cancer has been a major health problem. Despite the advancements made by modern medical sciences, complete treatment or removal of cancerous cells is still a challenging task. Vinblastine, an alkaloid obtained from Catharanthus roseus (L.) G.

[Acute bronchospasm due to periwinkle alkaloid and mitomycin association].

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We report six cases in which patients presented with acute dyspnoea following injections of either vindesine or vinorelbin. These patients were receiving chemotherapy in association with cisplatin, mitomycin, and vindesine or vinorelbin, for inoperable bronchial cancer. Three of the patients had

Cytotoxic Effect of Erythroxylum suberosum Combined with Radiotherapy in Head and Neck Cancer Cell Lines.

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The mouth and oropharynx cancer is the 6th most common type of cancer in the world. The treatment may involve surgery, chemotherapy and radiotherapy. More than 50% of drugs against cancer were isolated from natural sources, such as Catharanthus roseus and epipodophyllotoxin, isolated from

Vincristine induces cell cycle arrest and apoptosis in SH-SY5Y human neuroblastoma cells.

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Neuroblastoma is a common childhood tumor. Vincristine (VCR), an alkaloid extracted from Catharanthus roseus, is commonly used in combination chemotherapy. However, the mechanisms of VCR-induced neuroblastoma cell death are not clear. The aim of this study was to investigate the impact of VCR on

QM and QM/MD simulations of the Vinca alkaloids docked to tubulin.

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The Vinca alkaloids are a class of pharmaceutically relevant binary indole-indoline alkaloids based on and including natural extracts of the periwinkle plant, Catharanthus rosea. Two natural products, vinblastine and vincristine, have been in clinical use as important chemotherapy agents for over

Importance of producing economic compounds to combat cancer.

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The manuscript published by Microb Biotechnol, volume 10, highlights the relevance of the fungus Nigrospora sphaerica, an endophyte isolated from Catharanthus roseus, as an alternative source to obtain vinblastine, a compound used in chemotherapy schemes to treat several types of cancer. Authors

The Suzuki-Miyaura reaction in the chemical transformations of vindoline.

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Vindoline and its analogues are important constituents of the Madagascan periwinkle Catharanthus roseus, and some of them are valuable chemotherapy drugs used in treatment for some types of cancer, including leukaemia, lymphoma, breast and lung cancer. The search for semi-synthetic congeners of

Completion of the seven-step pathway from tabersonine to the anticancer drug precursor vindoline and its assembly in yeast.

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Antitumor substances related to vinblastine and vincristine are exclusively found in the Catharanthus roseus (Madagascar periwinkle), a member of the Apocynaceae plant family, and continue to be extensively used in cancer chemotherapy. Although in high demand, these valuable compounds only

Emerging trends in research on spatial and temporal organization of terpenoid indole alkaloid pathway in Catharanthus roseus: a literature update.

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Catharanthus roseus (The Madagaskar Periwinkle) plant is commercially valued for harbouring more than 130 bioactive terpenoid indole alkaloids (TIAs). Amongst these, two of the leaf-derived bisindole alkaloids-vinblastine and vincristine-are widely used in several anticancer chemotherapies. The

[New antitumor derivatives of vinblastine].

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The alkaloids of Catharanthus roseus vincristine 1 and vinblastine 2 are widely used in the chemotherapy of cancer. Their nitro-derivatives have also antitumour activity [2]. The dinitro-derivatives 4, 6-9 were prepared for pharmacological investigation. Some new hydroxymethyl derivatives 12-14,

Vinca drug components accumulate exclusively in leaf exudates of Madagascar periwinkle.

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The monoterpenoid indole alkaloids (MIAs) of Madagascar periwinkle (Catharanthus roseus) continue to be the most important source of natural drugs in chemotherapy treatments for a range of human cancers. These anticancer drugs are derived from the coupling of catharanthine and vindoline to yield

ATP-binding cassette transporter controls leaf surface secretion of anticancer drug components in Catharanthus roseus.

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The Madagascar periwinkle (Catharanthus roseus) is highly specialized for the biosynthesis of many different monoterpenoid indole alkaloids (MIAs), many of which have powerful biological activities. Such MIAs include the commercially important chemotherapy drugs vinblastine, vincristine, and other

Vacuolar transport of the medicinal alkaloids from Catharanthus roseus is mediated by a proton-driven antiport.

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Catharanthus roseus is one of the most studied medicinal plants due to the interest in their dimeric terpenoid indole alkaloids (TIAs) vinblastine and vincristine, which are used in cancer chemotherapy. These TIAs are produced in very low levels in the leaves of the plant from the monomeric

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