Thursday, 20 October 2016

Biotransformation Glossary

1. AbioticNot associated with living organisms.

2. Absolute lethal concentration (LC100)Lowest concentration of a substance in an environmental medium which kills 100 % of test organisms or species under defined conditions.


3. Absolute lethal dose (LD100) - Lowest amount of a substance which kills 100 % of test animals under defined conditions.


4. Active ingredientComponent of a mixture responsible for the biological effects of the mixture.


5. Active transport Movement of a substance across a cell membrane against an electrochemical gradient, in the direction opposite to normal diffusion and requiring the expenditure of energy.


6. CardiotoxicChemically harmful to the cells of the heart.


7. CatabolismReactions involving the oxidation of organic substrates to provide chemically available energy (for example ATP) and to generate metabolic intermediates.


8. Critical doseDose of a substance at and above which adverse functional changes, reversible or irreversible, occur in a cell or an organ.


9. Drug Diposition - Refers to all processes involved in the absorption, distribution metabolism and excretion of drugs in a living organism.


10. FertilityAbility to conceive and to produce offspring: for litter-bearing species the number of offspring per litter is used as a measure of fertility.


11. GlutathioneMaster antioxidant, a tripeptide consisting of glutamic acid, cysteine, and glycine: important in biological oxidations and the activation of some enzymes.


12. Glucuronic acidThe uronic acid of glucose in which C-6 is oxidized to a carboxyl group; the D-isomer detoxicates or inactivates various substances (for example, benzoic acid, phenol, camphor, and the female sex hormones) undergoing conjugation with such substances in the liver, the glucuronides so formed being excreted in the urine.


13. GlycineThe simplest amino acid; a major component of gelatin and silk fibroin; used as a nutrient and dietary supplement, and in solution for irrigation; used in the treatment of isovaleric acidemia.


14. Gastrointestinal tractof, relating to, or affecting the stomach and intestines.


15. Hydroxylationthe introduction of hydroxyl into an ion or radical usually by the replacement of hydrogen


16. Hydrolysisa chemical process in which a molecule is cleaved into two parts by the addition of a molecule of water. One fragment of the parent molecule gains a hydrogen ion (H + ) from the additional water molecule. The other group collects the remaining hydroxyl group (OH − ).


17. Hippuric acidan acyl glycine produced by the conjugation of benzoic acid and glycine, found as a normal component in urine as a metabolite of aromatic compounds from food. Increased urine hippuric acid content may have antibacterial effects.


18. Hydrophilicitythe tendency of a surface to become wet or to absorb water.


20. Kylationa particular alkylation of isobutane with olefins. For upgrading of petroleum, alkylation produces synthetic C7–C8[further explanation needed] alkylate, which is a premium blending stock for gasoline.


21. Kidneytwo organs located in your midsection on either side of your spine in the middle of your back, just above the waist. 


22. Lungpart of the respiratory system, a group of organs and tissues that work together to help you breathe. 


23. Liverthe body’s largest gland. It is a vital organ that supports nearly every other organ in the body in some facet.  Without a healthy liver, a person cannot survive.


24. Lipophilicitythe ability of a chemical compound to dissolve in fats, oils, lipids, and non-polar solvents such as hexane or toluene.


25. MethylationDenotes the addition of a methyl group on a substrate, or the substitution of an atom (or group) by a methyl group.


26. Mineralisation - The process through which an organic substance becomes impregnated by inorganic substances


27. Oxidative stressAdverse effects occurring when the generation of reactive oxygen species (ROS) in a system exceeds the system’s ability to neutralize and eliminate them; excess ROS can damage a cell’s lipids, protein or DNA.


28. Pharmacokinetics - A branch of pharmacology dedicated to determining the fate of substances administered to a living organism


29. PosologyPharmacological study of the choice of appropriate dose of a drug in relation to the physiological factors, such as age, that may influence its effect.


30. PoisonSubstance that, taken into or formed within the organism, impairs the health of the organism and may kill it.


31. PhosphorylationThe process of introducing a phosphate group into an organic molecule.


32. Plumbism Chronic poisoning caused by absorption of lead or lead salts.


33. Rhodanesemitochondrial enzyme that catalyzes the conversion of cyanide to thiocyanate.


34. SaturniaPain in a joint resulting from lead poisoning.


35. SulfationThe enzyme-catalyzed conjugation of a sulfo group (not a  sulfate or sulfuryl group) to another molecule.


36. SynergistSubstance that contributes more than additively to a mutual effect with another substance.


37. SymptomatologyGeneral description of all of the signs and symptoms of exposure to a toxicant.


38. ThioesterProduct of esterification between a carboxylic acid and a thiol.


39. TransesterificationProcess of exchanging the alkoxy group of an ester compound by another alcohol.


40. Tri-ortho-tolyphosphate/ Tri-ortho-cresylphosphateA component of mixed tri-cresyl phosphates that have been used as a plasticizer for chlorinated rubber, vinyl plastics, polystyrene, poluarcylic and polymethacrylic esters; as an adjuvant in milling pigment pastes; as a sol- vent and a binder in various natural resins; as a lubricant in synthetic lubricants and gaso- line; as a hydraulic fluid; and as a fire retardant.


41. Tetracaine (amethocaine)Local anesthetic of the ester anesthetic group.

42. TrypsinA digestive enzyme that breaks down proteins in the small intestine.


43. TiaramideAn anti-inflammatory agents that are not-steroidal in nature.


44. Tegafur A particular drug used to treat cancer.


45. UDP-glucuronosyltransferases A major pathway in the clearance of many endogenous aglycones (such as bilirubin) and xenobiotics (such as drugs)


46. Umbelliferone It is a widespread natural product of the coumarin family that absorbs ultraviolet light strongly at several wavelengths


47. Valpromide A carboxamide derivatives of valproic acid used in the treatment of epilepsy and some affective disorders


48. WarfarinA water-soluble compound with anticoagulant properties, used as a rat poison and in the treatment of thrombosis.


49. Xanthine oxidaseA type of enzyme that generates relative oxygen species.


50. Xenobiotics Substances that are foreign to the body or to an ecological system.




Refferences


American Heritage: Dictionary of the English Language. 2016. Fifth Edition. Houghton Mifflin Harcourt 
         Publishing Company.

Collinsdictionary.com 2016. At: http://www.collinsdictionary.com/dictionary/english/glutathione.
         Accessed on 25 October 2016.

Dictionary.com. 2016. Tetracaine. http://www.dictionary.com/browse/tetracaine. Accessed on 14th October 2016.


Drugs.com. 2016. Labetalol. At: https://www.drugs.com/cdi/drugdiposition.html. Accessed on 22 October 2016.

Gaddum, J. H. 1986.Vasodilator Substances of the Tissues. University Press, Cambridge.

Hormone Health Network, 2016. What is estrogen?  At: http://www.hormone.org/diseases-and
         conditions/womens-health/what-is-estrogen.  Accessed on 22 October 2016.

medicaldictionary.com 2016. At:http://medical-dictionary.thefreedictionary.com/glucuronic+acid.
         Accessed on 25 October 2016.

Merriam-Webster. 2016. Thiazide. At:http://medical-dictionary.thefreedictionary.com/glucuronic+acid. 
          Accessed on 25 October 2016.

NIH (National Institutes of Health). 2016. Tegafur-uracil.
          https://www.cancer.gov/publications/dictionaries/cancer-drug?cdrid=461135. Accessed on 14th
          October 2016.


NJDEP (New Jersey Department of Environment Protection). 2015. Ground Water Quality Standard for 
          Tri-ortho-cresyl phosphate. http://www.nj.gov/dep/wms/bears/docs/Tri-ortho
          cresyl%20phosphate%20fact%20sheet%20draft%20final%20for%20posting.pdf. Accessed on 
          14th October 2016.

Oilgae. 2016. Transesterification- Definition, Glossary, Details - Oilgae.
          http://www.oilgae.com/ref/glos/transesterification.html. Accessed on 14th October 2016. 

Parkinson, A. 2001. Biotransformation of Xenobiotics. http://farmasi.unud.ac.id/ind/wp-content/uploads/Bio
          Transformation-of-Xenobiotics.pdf. Accessed on 14th October 2016.

Wordow.com. 2016. valpromide. http://en.wordow.com/english/dictionary/?t=valpromide. Accessed on 14th
          October 2016.

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