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Difference between revisions of "Hand 1988 Science"

From Bioblast
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|abstract=Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular ''p''H (''p''Hi) in this metabolic switching. Artificially elevating the depressed ''p''Hi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence.
|abstract=Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular ''p''H (''p''Hi) in this metabolic switching. Artificially elevating the depressed ''p''Hi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence.
|keywords=Twin-Flow
|keywords=Twin-Flow
|mipnetlab=AT_Innsbruck_Gnaiger E, US LA Baton Rouge Hand SC, AT Innsbruck MitoCom
|mipnetlab=AT_Innsbruck_Gnaiger E, US LA Baton Rouge Hand SC
}}
}}
{{Labeling
{{Labeling

Revision as of 18:17, 15 August 2013

Publications in the MiPMap
Hand SC, Gnaiger E (1988) Anaerobic dormancy quantified in Artemia embryos: A calorimetric test of the control mechanism. Science 239: 1425-1427.

Β» PMID: 17769739

Hand SC, Gnaiger E (1988) Science

Abstract: Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular pH (pHi) in this metabolic switching. Artificially elevating the depressed pHi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence. β€’ Keywords: Twin-Flow

β€’ O2k-Network Lab: AT_Innsbruck_Gnaiger E, US LA Baton Rouge Hand SC


Labels: MiParea: Respiration, Comparative MiP;environmental MiP, Developmental biology 

Stress:Hypoxia  Organism: Artemia 

Preparation: Intact Organism"Intact Organism" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property. 

Regulation: ADP, ATP, pH  Coupling state: ROUTINE 


CaloRespirometry, Twin-Flow