Chemical structure of benzo-[a]-pyrene

Benzopyrene is a five-ring polycyclic aromatic hydrocarbon that is crystalline and yellow color as part of its physical properties. Is highly carcinogenic. It is a product of incomplete combustion at temperatures between 300 and 600 °C. Is found in coal tar, in smoke, and in charbroiled food. Latest studies revealed increased levels of Benzopyrene in burnt toast. Chemical structure of benzopyrene Selfmade by cacycle File links The following pages link to this file: Benzopyrene Categories: GFDL images ... Polycyclic aromatic hydrocarbons, also known as PAH, are chemical compounds that consist of fused aromatic rings and that do not contain heteroatoms and that do not carry substituents. ... In pathology, a carcinogen is any substance or agent that promotes cancer. ... Combustion or burning is an exothermic reaction between a substance (the fuel) and a gas (the oxidizer) to release heat. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... link title Headline text Bold textItalic textItalic textInsert non-formatted text hereInsert non-formatted text hereInsert non-formatted text hereInsert non-formatted text hereInsert non-formatted text here--220. ... Coal tar is the liquid by-product of the distillation of coal to make coke. ... Smoke is a suspension in air of small particles resulting from incomplete combustion of a fuel. ... To charbroil is a means of cooking by placing a piece of meat, fish, or vegetables on a flat , horizontally-lined surface. ... For other meanings, see Toast (disambiguation). ...

Consequences of Benzopyrene

A recent research in Kansas State University made a discovery that link between vitamin A and emphysema in smokers. Benzopyrene, a common carcinogen found in cigarettes, is the link to the deficiency, When fed to rats, benzopyrene induces vitamin A deficiency. Kansas State University (sometimes referred to as K-State) is an institution of higher learning located in Manhattan, Kansas. ... Retinol, the dietary form of vitamin A, is a fat-soluble, antioxidant vitamin important in vision and bone growth. ... This word has other meanings: see smoker. ... A cigarette will burn to ash on one end. ...

In October 18, 1996, a study provided the first true molecular evidence conclusively linking components in tobacco smoking to lung cancer. A chemical found in tobacco smoking, benzopyrene, causes genetic damage in lung cells that is identical to the damage observed in the DNA of most malignant tumors of the lungs. October 18 is the 291st day of the year (292nd in Leap years). ... 1996 is a leap year starting on Monday of the Gregorian calendar, and was designated the International Year for the Eradication of Poverty. ... Species N. acuminata N. clevelandii N. forgetiana N. glauca N. knightiana N. langsdorffii N. longiflora N. obtusifolia N. paniculata N. plumbagifolia N. quadrivalvis N. rustica N. × sanderae N. suaveolens N. sylvestris N. tabacum Ref: ITIS 30562 as of 2002-08-28 Tobacco () is a broad-leafed plant of the nightshade... Lung cancer is a malignant tumour of the lungs. ... The heart and lungs (from an older edition of Grays Anatomy) The lung is an organ belonging to the respiratory system and interfacing to the circulatory system of air-breathing vertebrates. ...

A 2001 National Cancer Institute study found levels of benzo(a)pyrene, to be significantly higher in foods cooked well-done on the barbecue, particularly steaks, chicken with skin, and hamburger. Japanese scientists showed cooked beef contained mutagens chemicals that change the genetic structure of DNA. 2001 is a common year starting on Monday of the Gregorian calendar. ... The National Cancer Institute (NCI) is the United States Federal Governments principal agency for cancer research and training. ...

Interaction with DNA

Benzopyrene diol epoxide binds to DNA, it disrupts the normal process of copying DNA and thus introduces errors into the cells. Eventually, such mutations can cause cells to grow faster than normal, pile up on each other, and form cancerous tumors. A diol is a chemical compound containing two hydroxyl groups. ... An epoxide is an ether in which the oxygen atom is part of a ring of three atoms. ... Space-filling model of a section of DNA molecule Deoxyribose nucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and many viruses). ... A cell is a single unit or compartment, enclosed by a border or wall. ...

References

• "Benzopyrene and Vitamin A deficiency (http://www.tobacco.org/news/171229.html)." Researcher links cigarettes, vitamin A and emphysema. Accessed on March 5, 2005.
• "Benzopyrene in Barbeque (http://www.newhousenews.com/archive/seeman052004.html)." Newhouse A1. Accessed on March 5, 2005.
• "Lung cancer as consecuence by Benzopyrene in smokers (http://www.sarnia.com/groups/antidrug/mjmeds/mjcancr.html)." Lung Cancer. Accessed on March 5, 2005.
• "Levels of Benzopyrene in Burnt toasts (http://www.guardian.co.uk/chemicalworld/story/0,14534,1219603,00.html)." Guardian Unlimited. Accessed on March 5, 2005.
• "DNA interaction with Benzopyrene (http://www.mybiology.com/chime/dna_benzopyrene/dna_benzopyrene_text.htm)." DNA. Accessed on March 5, 2005.

March 5 is the 64th day of the year in the Gregorian Calendar (65th in leap years). ... 2005 is a common year starting on Saturday of the Gregorian calendar. ... March 5 is the 64th day of the year in the Gregorian Calendar (65th in leap years). ... 2005 is a common year starting on Saturday of the Gregorian calendar. ... Smoke is a suspension in air of small particles resulting from incomplete combustion of a fuel. ... March 5 is the 64th day of the year in the Gregorian Calendar (65th in leap years). ... 2005 is a common year starting on Saturday of the Gregorian calendar. ... March 5 is the 64th day of the year in the Gregorian Calendar (65th in leap years). ... 2005 is a common year starting on Saturday of the Gregorian calendar. ... March 5 is the 64th day of the year in the Gregorian Calendar (65th in leap years). ... 2005 is a common year starting on Saturday of the Gregorian calendar. ...

See also

• Pyrene, a four-ring analog.
• Polycyclic aromatic hydrocarbon