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Capecitabine
|
Capecitabine is an orally-administered chemotherapeutic agent used in the treatment of metastatic breast and colorectal cancers. Capecitabine is a prodrug, that is enzymatically converted to 5-fluorouracil in the tumor, where it inhibits DNA synthesis and slows growth of tumor tissue. Pharmacology: Capecitabine is a fluoropyrimidine carbamate with antineoplastic activity indicated for the treatment of patients with metastatic breast cancer. It is an orally administered systemic prodrug of 5'-deoxy-5-fluorouridine (5'-DFUR) which is converted to 5-fluorouracil. Mechanism of action: Capecitabine is a prodrug that is selectively tumour-activated to its cytotoxic moiety, fluorouracil, by thymidine phosphorylase. Fluorouracil is further metabolized to two active metabolites, 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP), within normal and tumour cells. FdUMP inhibits DNA synthesis by reducing normal thymidine production, while FUTP inhibits RNA and protein synthesis by competing with uridine triphosphate.3 The active moiety of capecitabine, fluorouracil, is cell cycle phase-specific (Sphase). Both normal and tumor cells metabolize 5-FU to 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP). These metabolites cause cell injury by two different mechanisms. First, FdUMP and the folate cofactor, N5-10-methylenetetrahydrofolate, bind to thymidylate synthase (TS) to form a covalently bound ternary complex. This binding inhibits the formation of thymidylate from 2'-deaxyuridylate. Thymidylate is the necessary precursor of thymidine triphosphate, which is essential for the synthesis of DNA, so that a deficiency of this compound can inhibit cell division. Second nuclear transcriptional enzymes can mistakenly incorporate FUTP in place of uridine triphosphate (UTP) during the synthesis of RNA. This metabolic error can interfere with RNA processing and protein synthesis. Drug type: Approved. Investigational. Small Molecule. Drug category: Antimetabolites. Antimetabolites, Antineoplastic. Antineoplastic Agents. Prodrugs
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ILX:0101636
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5
|
scicrunch
|
08/24/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
troy sincomb |
|
Capgras Syndrome
|
|
ILX:0101637
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Capillary
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Any of the smallest blood vessels connecting arterioles with venules.
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ILX:0101638
|
9
|
scicrunch
|
06/23/2020
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Capillary Endothelial Cell
|
|
ILX:0101639
|
4
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Capra
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Even toed ungulates
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ILX:0101640
|
11
|
scicrunch
|
09/23/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
troy sincomb |
|
Capreomycin
|
Cyclic peptide antibiotic similar to viomycin. It is produced by Streptomyces capreolus. (PubChem) Pharmacology: Capreomycin is a member of the aminoglycoside family of antibiotics. These antibiotics have the ability to kill a wide variety of bacteria, including bacteria responsible for causing tuberculosis (TB). Mechanism of action: Little is known about capreomycin's exact mechanism of action, but it is thought to inhibit protein synthesis by binding to the 70S ribosomal unit. Capreomycin also binds to components in the bacterial cell which result in the production of abnormal proteins. These proteins are necessary for the bacteria's survival. Therefore the production of these abnormal proteins is ultimately fatal to the bacteria. Drug type: Approved. Small Molecule. Drug category: Anti-Bacterial Agents. Antibiotics, Antitubercular
|
ILX:0101641
|
5
|
scicrunch
|
08/24/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
troy sincomb |
|
Caprinae
|
|
ILX:0101642
|
4
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Capromab
|
Murine IgG1 monoclonal antibody 7E11-C5.3 antibody conjugated to linker chelator peptide group for indium attachment Pharmacology: Binds to the prostate-specific membrane antigen, which is a cell surface protein generally overexpressed in prostate tissues and prostate cancers. The radioactive Indium 111, which is covalently attached to the antibody, allows radiodiagnostic detection of PSMA expressing cells and tumors Mechanism of action: Binds selectively to cell-surface prostate-specific membrane antigen (PSMA) expressed on prostate tissues and tumors. Drug type: Approved. Biotech. Drug category: Imaging Agents
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ILX:0101643
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Capsule of medial geniculate body
|
|
ILX:0101644
|
9
|
scicrunch
|
06/23/2020
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Capsule of red nucleus
|
|
ILX:0101645
|
11
|
scicrunch
|
11/30/2020
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Captopril
|
A potent and specific inhibitor of peptidyl-dipeptidase A. It blocks the conversion of angiotensin I to angiotensin II, a vasoconstrictor and important regulator of arterial blood pressure. Captopril acts to suppress the renin-angiotensin system and inhibits pressure responses to exogenous angiotensin. (PubChem) Pharmacology: Captopril, an angiotensin-converting enzyme (ACE) inhibitor, is used to treat hypertension, congestive heart failure, and renal syndromes such as diabetic nephropathy and scleroderma. The adverse effect and pharmacokinetic limitations of captopril stimulated the development enalapril and subsequent ACE inhibitors. Mechanism of action: Captopril competes with angiotensin I for binding at the angiotensin-converting enzyme, blocking the conversion of angiotensin I to angiotensin II. As angiotensin II is a vasoconstrictor and a negative feedback mediator for renin activity, lower angiotensin II levels results in a decrease in blood pressure, an increase in renin activity, and stimulation of baroreceptor reflex mechanisms. Kininase II, an enzyme which degrades the vasodilator bradykinin, is identical to ACE and may also be inhibited. Drug type: Approved. Small Molecule. Drug category: Angiotensin-converting Enzyme Inhibitors. Antihypertensive Agents
|
ILX:0101646
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Carbachol
|
A slowly hydrolyzed cholinergic agonist that acts at both muscarinic and nicotinic receptors. (PubChem) Pharmacology: Carbachol is a potent cholinergic (parasympathomimetic) agent which produces constriction of the iris and ciliary body resulting in reduction in intraocular pressure. The exact mechanism by which carbachol lowers intraocular pressure is not precisely known. In the cat and rat, carbachol is well-known for its ability to induce rapid eye movement (REM) sleep when microinjected into the pontine reticular formation. Carbachol elicits this REM sleep-like state via activation of postsynaptic muscarinic cholinergic receptors (mAChRs). Mechanism of action: Carbachol is a parasympathomimetic that stimulates both muscarinic and nicotinic receptors. In topical ocular and intraocular administration its principal effects are miosis and increased aqueous humour outflow. Drug type: Approved. Small Molecule. Drug category: Analgesics, Non-Narcotic. Cardiotonic Agents. Cholinergic Agonists. Miotics
|
ILX:0101647
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Carbamazepine
|
An anticonvulsant used to control grand mal and psychomotor or focal seizures. Its mode of action is not fully understood, but some of its actions resemble those of phenytoin; although there is little chemical resemblance between the two compounds, their three-dimensional structure is similar. (PubChem) Pharmacology: Carbamazepine, an anticonvulsant structurally similar to tricyclic antidepressants, is used to treat partial seizures, tonic-clonic seizures, pain of neurologic origin such as trigeminal neuralgia, and psychiatric disorders including manic-depressive illness and aggression due to dementia. Mechanism of action: Carbamazepine inhibits sustained repetitive firing by blocking use-dependent sodium channels. Pain relief is believed to be associated with blockade of synaptic transmission in the trigeminal nucleus and seizure control with reduction of post-tetanic potentiation of synaptic transmission in the spinal cord. Carbamazepine also possesses anticholinergic, central antidiuretic, antiarrhythmic, muscle relaxant, antidepressant (possibly through blockade of norepinephrine release), sedative, and neuromuscular-blocking properties. Drug type: Approved. Investigational. Small Molecule. Drug category: Analgesics. Analgesics, Non-Narcotic. Anticonvulsants. Antimanic Agents
|
ILX:0101648
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Carbenicillin
|
Broad-spectrum semisynthetic penicillin derivative used parenterally. It is susceptible to gastric juice and penicillinase and may damage platelet function. (PubChem) Pharmacology: Carbenicillin is a semisynthetic penicillin. Though carbenicillin provides substantial in vitro activity against a variety of both gram-positive and gram-negative microorganisms, the most important aspect of its profile is in its antipseudomonal and antiproteal activity. Because of the high urine levels obtained following administration, carbenicillin has demonstrated clinical efficacy in urinary infections due to susceptible strains of: Escherichia coli, Proteus mirabilis, Proteus vulgaris, Morganella morganii, Pseudomonas species, Providencia rettgeri, Enterobacter species, and Enterococci (S. faecalis). Mechanism of action: Free carbenicillin is the predominant pharmacologically active fraction of the salt. Carbenicillin exerts its antibacterial activity by interference with final cell wall synthesis of susceptible bacteria. Penicillins acylate the penicillin-sensitive transpeptidase C-terminal domain by opening the lactam ring. This inactivation of the enzyme prevents the formation of a cross-link of two linear peptidoglycan strands, inhibiting the third and last stage of bacterial cell wall synthesis. Cell lysis is then mediated by bacterial cell wall autolytic enzymes such as autolysins; it is possible that carbenicillin interferes with an autolysin inhibitor. Drug type: Approved. Small Molecule. Drug category: Anti-Bacterial Agents. Penicillins
|
ILX:0101649
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Carbetocin
|
Carbetocin is a drug used to control postpartum hemorrhage, bleeding after giving birth. It is an analogue of oxytocin, and its action is similar to that of oxytocin -- it causes contraction of the uterus. Pharmacology: Carbetocin is a drug used to control postpartum hemorrhage, bleeding after giving birth. It is sold under the trade name Duratocin. It is an analogue of oxytocin, and its action is similar to that of oxytocin; it causes contraction of the uterus. Mechanism of action: Carbetocin binds to oxytocin receptors present on the smooth musculature of the uterus, resulting in rhythmic contractions of the uterus, increased frequency of existing contractions, and increased uterine tone. The oxytocin receptor content of the uterus is very low in the non-pregnant state, and increases during pregnancy, reaching a peak at the time of delivery. Drug type: Approved. Small Molecule. Drug category: Anti-tocolytic Agents. Labor Induction Agents
|
ILX:0101650
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Carbidopa
|
An inhibitor of DOPA decarboxylase, preventing conversion of levodopa to dopamine. It is used in parkinson disease to reduce peripheral adverse effects of levodopa. It has no antiparkinson actions by itself. (PubChem) Pharmacology: Carbidopa, a noncompetitive decarboxylase inhibitor, is used in combination with levodopa for the treatment of Parkinson's disease. Mechanism of action: When mixed with levodopa, carbidopa inhibits the peripheral conversion of levodopa to dopamine and the decarboxylation of oxitriptan to serotonin by aromatic L-amino acid decarboxylase. This results in increased amount of levodopa and oxitriptan available for transport to the CNS. Carbidopa also inhibits the metabolism of levodopa in the GI tract, thus, increasing the bioavailability of levodopa. Drug type: Approved. Small Molecule. Drug category: Antidyskinetics. Antiparkinson Agents. Dopamine Agents. Enzyme Inhibitors
|
ILX:0101651
|
5
|
scicrunch
|
08/24/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
troy sincomb |
|
Carbimazole
|
An imidazole antithyroid agent. Carbimazole is metabolized to methimazole, which is responsible for the antithyroid activity. (PubChem) Pharmacology: Carbimazole is a carbethoxy derivative of methimazole. Its antithyroid action is due to its conversion to methimazole after absorption. It is used to treat hyperthyroidism and thyrotoxicosis. Mechanism of action: Carbimazole is an aitithyroid agent that decreases the uptake and concentration of inorganic iodine by thyroid, it also reduces the formation of di-iodotyrosine and thyroxine. Drug type: Approved. Small Molecule. Drug category: Antithyroid Agents
|
ILX:0101652
|
3
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |
|
Carbinoxamine
|
Carbinoxamine competes with free histamine for binding at HA-receptor sites. This antagonizes the effects of histamine on HA-receptors, leading to a reduction of the negative symptoms brought on by histamine HA-receptor binding. In addition to the usual allergic symptoms, the drug also treats irritant cough and nausea, vomiting, and vertigo associated with motion sickness. Carbinoxamine's anticholinergic action appears to be due to a central antimuscarinic effect, which also may be responsible for its antiemetic effects, although the exact mechanism is unknown. It also is used commonly to treat drug-induced extrapyramidal symptoms as well as to treat mild cases of Parkinson's disease. Pharmacology: Carbinoxamine is an antihistamine of the ethanolamine class. Ethanolamine antihistamines have significant antimuscarinic activity and produce marked sedation in most patients. In addition to the usual allergic symptoms, the drug also treats irritant cough and nausea, vomiting, and vertigo associated with motion sickness. It also is used commonly to treat drug-induced extrapyramidal symptoms as well as to treat mild cases of Parkinson's disease. Rather than preventing the release of histamine, as do cromolyn and nedocromil, carbinoxamine competes with free histamine for binding at HA-receptor sites. Carbinoxamine competitively antagonizes the effects of histamine on HA-receptors in the GI tract, uterus, large blood vessels, and bronchial muscle. Ethanolamine derivatives have greater anticholinergic activity than do other antihistamines, which probably accounts for the antidyskinetic action of carbinoxamine. Mechanism of action: Carbinoxamine competes with free histamine for binding at HA-receptor sites. This antagonizes the effects of histamine on HA-receptors, leading to a reduction of the negative symptoms brought on by histamine HA-receptor binding. Carbinoxamine's anticholinergic action appears to be due to a central antimuscarinic effect, which also may be responsible for its antiemetic effects, although the exact mechanism is unknown. Drug type: Approved. Small Molecule. Drug category: Antihistamines
|
ILX:0101653
|
5
|
scicrunch
|
08/24/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
troy sincomb |
|
Carbocyanine dye
|
Family of cyanine dyes that have a bridge of three methine groups joining the two rings; inrelated cyanine, dicarbocyanine, and tricarbocyanine dyes,this bridge contains 1, 5, and 7 methine groups, respectively. Related dyes can have minor alterations in their ring structure with either an oxygen (cliO") or a sulfur ("diS") instead of an isopropyl group ((which yields an indole ring and hence the abbreviation "diI')."
|
ILX:0101654
|
5
|
scicrunch
|
08/24/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
troy sincomb |
|
Carbohydrate
|
The largest class of organic compounds, including starches, glycogens, cellulose, gums, and simple sugars. Carbohydrates are composed of carbon, hydrogen, and oxygen in a ratio of Cn(H2O)n (MSH).
|
ILX:0101655
|
4
|
scicrunch
|
06/18/2018
|
scicrunch |
term |
12/08/2016 |
0 |
NeuroLex |
NeuroLex |