- 行业: Government; Health care
- Number of terms: 6957
- Number of blossaries: 0
- Company Profile:
The National Cancer Institute (NCI) is part of the National Institutes of Health (NIH), which is one of 11 agencies that compose the Department of Health and Human Services (HHS). The NCI, established under the National Cancer Institute Act of 1937, is the Federal Government's principal agency for ...
A naturally occurring, indigestible and non-absorbable oligosaccharide produced by certain plants with prebiotic and potential anticancer activity. Inulin stimulates the growth of beneficial bacteria in the colon, including Bifidobacteria and Lactobacilli, thereby modulating the composition of microflora. This creates an environment that protects against pathogens, toxins and carcinogens, which can cause inflammation and cancer. In addition, fermentation of inulin leads to an increase in short-chain fatty acids and lactic acid production, thereby reducing colonic pH, which may further control pathogenic bacteria growth and may contribute to inulin's cancer protective properties.
Industry:Pharmaceutical
A naturally occurring xanthine derivative with central nervous system (CNS) stimulating activity. Due to the structural similarity to adenosine, caffeine binds to and blocks adenosine receptors, thereby preventing the inhibitory effects of adenosine on nerve cells. This leads to stimulation of medullary, vagal, vasomotor, and respiratory centers in the brain; and the release of epinephrine. Physiologic responses can include bradycardia, tachycardia, vasoconstriction, CNS excitablility, increased respiratory rate, increased blood pressure, increased blood flow to muscles, decreased blood flow to skin and inner organs, and release of glucose by the liver. Due to the interaction between adenosine A2A and dopamine D2 receptors, caffeine can also indirectly increase the levels of dopamine in the brain.
Industry:Pharmaceutical
A naturally occurring organoselenium compound found in many plants, including garlic, onions, and broccoli, with potential antioxidant and chemopreventive activities. Se-Methyl-seleno-L-cysteine (MSC) is an amino acid analogue of cysteine in which a methylselenium moiety replaces the sulphur atom of cysteine. This agent acts as an antioxidant when incorporated into glutathione peroxidase and has been shown to exhibit potent chemopreventive activity in animal models.
Industry:Pharmaceutical
A naturally occurring serine derivative diazo compound with antineoplastic properties, Azaserine functions as a purine antagonist and glutamine analogue (glutamine amidotransferase inhibitor) that competitively inhibits pathways in which glutamine is metabolized. An antibiotic and antitumor agent, Azaserine is used in clinical studies as a potential antineoplastic agent.
Industry:Pharmaceutical
A naturally occurring monoterpene related to limonene with antineoplastic activity. Perillyl alcohol inhibits farnesyl transferase and geranylgeranyl transferase, thereby preventing post-translational protein farnesylation and isoprenylation and activation of oncoproteins such as p21-ras, and arresting tumor cells in the G1 phase of the cell cycle.
Industry:Pharmaceutical
A naturally occurring micronutrient, synthesized in small amounts by plants and animals (including humans), with antioxidant and potential chemopreventive activities. Alpha-lipoic acid acts as a free radical scavenger and assists in repairing oxidative damage and regenerates endogenous antioxidants, including vitamins C and E and glutathione. This agent also promotes glutathione synthesis. In addition, alpha-lipoic acid exerts metal chelating capacities and functions as a cofactor in various mitochondrial enzyme complexes involved in the decarboxylation of alpha-keto acids.
Industry:Pharmaceutical
A naturally occurring enterovirus with potential antitumor activity. Upon intratumoral administration, coxsackievirus A21 targets and binds to intracellular adhesion molecule 1 (ICAM-1) and decay acceleration factor (DAF), both cell surface molecules that are both overexpressed on certain malignant cells. After entering the cells, coxsackievirus A21 replicates in these cancer cells, thereby causing cancer cell lysis. This results in a reduction of tumor cell growth.
Industry:Pharmaceutical
A naturally occurring capsaicin analog found in the latex of the cactus Euphorbia resinifera with analgesic activity. Resiniferatoxin (RTX) binds to and activates the transient receptor potential vanilloid 1 (TRPV1), a non-selective cation channel in the plasma membrane of primary afferent sensory neurons. This increases the permeability to cations, and leads to an influx of calcium and sodium ions. This results in membrane depolarization, causing an irritant effect, followed by desensitization of the sensory neurons thereby inhibiting signal conduction in afferent pain pathways and causing analgesia. TRPV1, a member of the transient receptor potential channel (TRP) superfamily, is a heat- and chemo-sensitive calcium/sodium ion channel that is selectively expressed in a subpopulation of pain-sensing primary afferent neurons.
Industry:Pharmaceutical
A naturally occurring benzoquinone important in electron transport in mitochondrial membranes. Coenzyme-Q functions as an endogenous antioxidant; deficiencies of this enzyme have been observed in patients with many different types of cancer and limited studies have suggested that coenzyme-Q may induce tumor regression in patients with breast cancer. This agent may have immunostimulatory effects.
Industry:Pharmaceutical
A natural toxic furan isolated from a fungus-infected sweet potato (Ipomoea batatas) with potential antineoplastic activity. Ipomeanol is activated by mixed function oxidases in vivo to its epoxide form, an alkylating agent that covalently binds cell macromolecules. This agent causes cell death by a p53-independent mechanism.
Industry:Pharmaceutical
