camptotheca yunnanensis/pretsēnīšu

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Bcmfs1, a novel major facilitator superfamily transporter from Botrytis cinerea, provides tolerance towards the natural toxic compounds camptothecin and cercosporin and towards fungicides.

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Ielogoties Reģistrēties

Bcmfs1, a novel major facilitator superfamily gene from Botrytis cinerea, was cloned, and replacement and overexpression mutants were constructed to study its function. Replacement mutants showed increased sensitivity to the natural toxic compounds camptothecin and cercosporin, produced by the plant

Antifungal activity of camptothecin, trifolin, and hyperoside isolated from Camptotheca acuminata.

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Ielogoties Reģistrēties

Leaf spots and root rots are major fungal diseases in Camptotheca acuminata that limit cultivation of the plant for camptothecin (CPT), a promising anticancer and antiviral alkaloid. Bioassays showed that pure CPT and flavonoids (trifolin and hyperoside) isolated from Camptotheca effectively control

Therapeutic applications of medicinal plants in the treatment of breast cancer: a review of their pharmacology, efficacy and tolerability.

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Ielogoties Reģistrēties

Various active compounds (or their semi-synthetic derivatives) derived from medicinal plants have been assessed for their efficacy and tolerability in the treatment of breast cancer. Some of these plant species, including Taxus baccata (paclitaxel, docetaxel), Podophyllum peltatum (etoposide),

Camptothecin: therapeutic potential and biotechnology.

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Ielogoties Reģistrēties

Camptothecin (CPT) and its derivatives have been received considerable attention recently. Two semi-synthetic derivatives, topotecan and irinotecan, are currently prescribed as anticancer drugs. Several more are now in clinical trial. CPT is produced in many plants belonging to unrelated orders of

Development of transcriptomic resources for interrogating the biosynthesis of monoterpene indole alkaloids in medicinal plant species.

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Ielogoties Reģistrēties

The natural diversity of plant metabolism has long been a source for human medicines. One group of plant-derived compounds, the monoterpene indole alkaloids (MIAs), includes well-documented therapeutic agents used in the treatment of cancer (vinblastine, vincristine, camptothecin), hypertension

Evaluation of antimicrobial activity of endophytic fungi from Camptotheca acuminata (Nyssaceae).

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Ielogoties Reģistrēties

Agricultural research of plant-derived endophytic fungi has grown in recent decades. We isolated 26 endophytic fungi from the leaves, stems and fruits of "the tree of life", Camptotheca acuminata, and tested them for antimicrobial activities based on growth inhibition measurements in a modified agar

Irinotecan

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Ielogoties Reģistrēties

Irinotecan is a DNA topoisomerase I inhibitor that received approval for use in the United States in 1996.[1] It is derived from the Chinese tree, Camptotheca acuminata, and is used as a chemotherapy agent against a variety of solid tumors, such as colorectal, pancreatic, ovarian, and lung

Current treatment and future directions in neuroblastoma.

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Ielogoties Reģistrēties

OBJECTIVE The International Neuroblastoma Staging System (INSS) and Pathology Classification (INPC) were applied to analyze the results of treatment of 644 patients with neuroblastoma treated in Japan during the years from 1995 to 1999, and it was found that the pathology classification (INPC)

The emerging role of irinotecan (CPT-11) in the treatment of malignant glioma in brain tumors.

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Ielogoties Reģistrēties

Irinotecan is a water-soluble derivative of camptothecin, an alkylator originally extracted from the Chinese tree Camptotheca acuminata. Laboratory studies have demonstrated the activity of irinotecan in a broad panel of pediatric and adult central nervous system tumor xenografts in athymic nude

Ultrasonic/microwave-assisted extraction of polysaccharides from Camptotheca acuminata fruits and its antitumor activity.

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Ielogoties Reģistrēties

In the present study, an efficient ultrasonic/microwave-assisted extraction (UMAE) procedure for the polysaccharides from the fruit of Camptotheca acuminata (CAFP) was investigated and optimized. Under the optimum conditions (ratio of liquid to raw material 30 mL/g, microwave irradiation time of 20

Stimulation of interleukin-1beta-converting enzyme activity during growth inhibition by CPT-11 in the human myeloid leukemia cell line K562.

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Ielogoties Reģistrēties

Camptothecin (CPT) was first extracted from Camptotheca acuminata and has a strong antitumor effect. Its water-soluble derivative, CPT-11, has higher therapeutic efficacy and less toxicity than CPT. Recently, CPT-treated cells have been shown to undergo apoptosis. However, the mechanism of induction

Effects of camptothecin on the rice blast fungus Magnaporthe oryzae.

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Ielogoties Reģistrēties

Rice blast caused by Magnaporthe oryzae B. Couch is one of the most devastating diseases on rice. Camptothecin (CPT), which was primarily isolated from Camptotheca acuminata, is well-known for its anti-tumor activities, and is also developed as a potential biological pesticide. We previously

10-Hydroxycamptothecin induces apoptosis in human neuroblastoma SMS-KCNR cells through p53, cytochrome c and caspase 3 pathways.

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Ielogoties Reģistrēties

Neuroblastoma (NB), the most common extracranial solid tumor in childhood, remains one of the most challenging types of cancer to treat. Therefore, the search for novel effective drugs for its treatment is essential. The present study used 10-hydroxycamptothecin (HCPT), which is a naturally

Preclinical pharmacology of the natural product anticancer agent 10-hydroxycamptothecin, an inhibitor of topoisomerase I.

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Ielogoties Reģistrēties

OBJECTIVE 10-Hydroxycamptothecin (HCPT) is an indole alkaloid isolated from a Chinese tree, Camptotheca acuminata, and has a wide spectrum of anticancer activity in vitro and in vivo mainly through inhibitory effects on topoisomerase I. HCPT has been shown to be more potent and less toxic than

Rubitecan: 9-NC, 9-Nitro-20(S)-camptothecin, 9-nitro-camptothecin, 9-nitrocamptothecin, RFS 2000, RFS2000.

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Ielogoties Reģistrēties

Rubitecan [Orathecin, 9-nitrocamptothecin, 9NC, RFS 2000] is a topoisomerase I inhibitor extracted from the bark and leaves of the Camptotheca acuminata tree, which is native to China. Rubitecan is an oral compound being developed for the treatment of pancreatic cancer and other solid tumours by

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