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Difference between revisions of "Kosowski 1998 Biochim Biophys Acta"

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{{Labeling
{{Labeling
|instruments=Oxygraph-2k
|organism=Rat
|organism=Rat
|tissues=Islet Cell; Pancreas; Thymus
|tissues=Islet Cell; Pancreas; Thymus
|preparations=Intact Cell; Cultured; Primary
|preparations=Intact cells
|instruments=Oxygraph-2k
|discipline=Mitochondrial Physiology, Biomedicine
|discipline=Mitochondrial Physiology, Biomedicine
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Revision as of 07:39, 8 August 2013

Publications in the MiPMap
Kosowski H, Schild L, Kunz D, Halangk W (1998) Energy metabolism in rat pancreatic acinar cells during anoxia and reoxygenation. Biochim Biophys Acta 1367: 118-126.

Β» PMID: 9784620

Kosowski H, Schild L, Kunz D, Halangk W (1998) Biochim Biophys Acta

Abstract: Mitochondrial energy metabolism was studied in isolated pancreatic acinar cells during anoxia up to 90 min and reoxygenation for 60 min. To identify critical alterations leading to the known postanoxic impairments in structure and function of acinar cells, adenine nucleotide levels and the rates of phosphorylating and non-phosphorylating respiration were determined. ATP levels and the total amount of adenine nucleotides strongly decreased as early as after 30 min of anoxia. The cells partially restored ATP and the total adenine nucleotides within 60 min of reoxygenation. Long-term anoxia caused an increase in the oligomycin-insensitive part of oxygen consumption. The respiratory capacity measured as uncoupled respiration progressively declined to 40% of controls after 90 min of anoxia. Fluorescence measurements showed that flavoproteins and mitochondrial pyridine nucleotides in reoxygenated cells after short-term anoxia were in a more reduced state than in aerobic controls, and were not fully oxidizable by uncoupling. It is concluded that long-term anoxia produces an irreversible loss of respiratory capacity leading to a limited ATP production. This functional impairment and the progressive damage to acinar cells may be relevant for pancreatic injuries such as acute pancreatitis or post-transplantation pancreatitis. β€’ Keywords: Acinar cell, Anoxia, Respiration, Reoxygenation, Adenosine triphosphate, (Pancreas)


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Organism: Rat  Tissue;cell: Islet Cell; Pancreas; Thymus"Islet Cell; Pancreas; Thymus" is not in the list (Heart, Skeletal muscle, Nervous system, Liver, Kidney, Lung;gill, Islet cell;pancreas;thymus, Endothelial;epithelial;mesothelial cell, Blood cells, Fat, ...) of allowed values for the "Tissue and cell" property.  Preparation: Intact cells 



HRR: Oxygraph-2k