Mailing List Archive

Mailing List: techdiver

Banner Advert

Message Display

Date: Sun, 12 Nov 1995 23:53:17 -1000
From: Anthony Montgomery <amontgom@ha*.ed*>
To: "A.Appleyard" <A.APPLEYARD@fs*.mt*.um*.ac*.uk*>
cc: techdiver@terra.net
Subject: Re: O2 toxicity (biochemistry)
To whom is interested,

	We have established, thanks to A. Appleyard, that it is possible 
for the Superoxide anion to be forced off by other O2 molecules with a high 
ppO2 in the body.  The reactions contolling this process are designed to 
not let this happen under normal conditions, but it is concievable for 
this to happen under high ppO2 conditions.  
	Now, I have also found out that the Superoxide anion is normally 
produced in small concentrations during the oxidation of iron(Fe2+ to 
Fe+3) in heme (the O2 carrier for hemeoglobin).  As mentioned before, 
again thanks to A. Appleyard,there are enzymes to rid the body of these 
destructive compounds.  But we know if there is an overwhelming amount 
of anions to be then there will be an accumulation of them; therefore, 
possibly causing O2 toxicity.  Now the question here is, does the root of 
this condition really happen from the electron transport chain or from the 
oxidation of iron for heme?  Also are there any other reactions that 
could contribute to this condition?  My guess is that the condition is an 
accumulation of multiple aspects which were described earlier and even 
other things not discussed!  


Aloha
Tony

		ANTHONY MONTGOMERY
Marine Option Program		Waikiki Aquarium
1000 Pope Road  MSB #203	2777 Kalakaua Ave
Honolulu, Hawaii  96822		Honolulu, Hawaii   96815
Fax: (808) 956-2417		Fax: (808) 923-1771
Phone:  (808) 956-6000		Phone: (808) 923-9741




Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]