What you said about cancer cells & oxygen (H2o2) has me interested, since one of the treatments for candida is to drink or take H2o2 intravenously... Would this tend to promote cancer, or are we candida sufferers so deficient in O2 (which is the theory) that we would not create enough of an excess to promote cancer?
Any thoughts? Sheila -----Original Message----- From: Tai-Pan [mailto:[email protected]] Sent: Tuesday, July 27, 1999 1:35 AM To: [email protected] Subject: CS>Cell biology 101, Pt3,Re: CS>Cell biology 101 Ivan Anderson wrote: > > Bob, > > I believe plant cells live in an oxygen free environment. Cancer cells > are said by some to resemble plant cells in this and in other > respects. > Thoughts? > > Regards - Ivan Hi Ivan and Listers, Thousands of diverse chemical reactions are going on constantly in every active living cell. These chemical reactions involve energy conversions. Some activities, photo-synthesis, assimilation, and the synthesis of complex foodstuffs and other materials from simpler substances, build up new compounds and therefore are constructive. Other reactions such as respiration and digestion, in which complex food materials are broken down into simpler compounds are destructive. Constructive and destructive processes commonly go on at the same time. The term *metabolism* has long been applied to the sum total of the activities in the cell. *Anabolism* is the term used for the constructive, and *catabolism* for the destructive processes. Plant and animal cells use energy in the metabolism of their cells. This energy is obtained by the oxidation of organic compounds. Rapid oxidation is called burning and would be much to fast for cells and destroy them. Plant and animal cells have a slow oxidation rate called *respiration*. Because of its slow rate the respiration of the cell allows most of the energy to be stored as ATP that can be used by the cell as it needs it. Respiration must occur in every active, living cell if life is to be maintained. Not only plants but also animals respire. In addition some animals also *breathe*, and the distinction between respiration and breathing must be clearly understood--particularly as respiration is used incorrectly as synonymous with breathing. The more highly developed animals have a breathing mechanism, including lungs, by which air (with oxygen) is passed over a large membrane surface where oxygen and carbon dioxide are exchanged. The blood carries the oxygen to the cells for use in respiration. Plants respire and some animals both breathe and respire. During the day plants receive their energy from the sun by photosynthesis by reducing hydrogen and at night they receive their energy by respiration by reducing oxygen. Without oxygen plant and animal cells would die. We know that during photosynthesis (during daylight) carbon dioxide is taken in and water and oxygen are released, and during respiration (night hours) oxygen is taken in and carbon dioxide is released. Animal cells only respire, all the time, and take in oxygen and release carbon dioxide. We know that during photosynthesis and the releasing of oxygen that some of the oxygen is retained by the plant cell for its own use and the excess is released to the atmosphere. During the day with adequate illumination the photosynthesis rate is rapid enough to produce up to ten times the oxygen that is needed for respiration, the excess being released into the atmosphere. The slow dropping of light levels will cause the photosynthesis to decrease until the *compensation point* is reached, usually at about 2% of full sunlight, and the plant cells depend on respiration only. Cancer cells require much oxygen, more than a cell under control. Excess oxygen in the body has been pointed out as a cause of promoting cancer development. The excess oxygen is usually in the form of oxygen radicals such as O3 and H2O2, both of which have been identified as *promoters* of cancers. Cancer cells even turn on genes that cause extra blood capillaries to develop and supply them, the cancer cells, with more oxygen. Cancer cell physiology is very interesting and surprising. Any interest? Bless you Bob Lee -- oozing on the muggy shore of the gulf coast [email protected] -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]> -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]>
