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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Biochem J. 2015 Apr 1;467(1):115–126. doi: 10.1042/BJ20141018

Figure 4. High glucose depresses Complex II-dependent State 3 and 4o respiration.

Figure 4

NRCMs were treated for 48 h with 5 or 33 mM glucose or an osmotic control. During XF analysis, NRCMs were permeabilized and provided with succinate (to support Complex II-dependent respiration) as well as Rot (to inhibit Complex I activity). (A) XF assay of Complex II-dependent respiration: following three baseline OCR measurements in MAS buffer, the permeabilization agent, saponin, and succinate + Rot were injected. After two measurements, oligomycin (Oligo), then AA + Rot (AA–Rot) were injected sequentially, with measurements recorded after each injection. (B) State 3 OCR: The AA + Rot rate was subtracted from the succinate-stimulated rate to determine the State 3 rates. (C) State 4o OCR: The AA + Rot rate was subtracted from the oligomycin rate to obtain State 4o rates. (D) RCR: State 3/State 4o. As indicated in bars, n = 6 independent experiments; *P < 0.05, compared with 5 mM glucose.