Mitochondrial cristae morphology reflecting metabolism, superoxide formation, redox homeostasis, and pathology

P Ježek, M Jabůrek, B Holendová… - Antioxidants & Redox …, 2023‏ - liebertpub.com
Significance: Mitochondrial (mt) reticulum network in the cell possesses amazing
ultramorphology of parallel lamellar cristae, formed by the invaginated inner mitochondrial …

Riding the tiger–physiological and pathological effects of superoxide and hydrogen peroxide generated in the mitochondrial matrix

MD Brand - Critical reviews in biochemistry and molecular biology, 2020‏ - Taylor & Francis
Elevated mitochondrial matrix superoxide and/or hydrogen peroxide concentrations drive a
wide range of physiological responses and pathologies. Concentrations of superoxide and …

Understanding coenzyme Q

Y Wang, N Lilienfeldt, S Hekimi - Physiological Reviews, 2024‏ - journals.physiology.org
Coenzyme Q (CoQ), also known as ubiquinone, comprises a benzoquinone head group and
a long isoprenoid side chain. It is thus extremely hydrophobic and resides in membranes. It …

[HTML][HTML] Hydrogen peroxide effects on natural-sourced polysacchrides: free radical formation/production, degradation process, and reaction mechanism—a critical …

CE Ofoedu, L You, CM Osuji, JO Iwouno, NO Kabuo… - Foods, 2021‏ - mdpi.com
Numerous reactive oxygen species (ROS) entities exist, and hydrogen peroxide (H2O2) is
very key among them as it is well known to possess a stable but poor reactivity capable of …

Fatty acid oxidation drives mitochondrial hydrogen peroxide production by α-ketoglutarate dehydrogenase

C Grayson, B Faerman, O Koufos, RJ Mailloux - Journal of Biological …, 2024‏ - jbc.org
In the present study, we examined the mitochondrial hydrogen peroxide (mH 2 O 2)
generating capacity of α-ketoglutarate dehydrogenase (KGDH) and compared it to …

Redox activation of mitochondrial DAMPs and the metabolic consequences for development of autoimmunity

A Koenig, IA Buskiewicz-Koenig - Antioxidants & redox signaling, 2022‏ - liebertpub.com
Significance: Reactive oxygen species (ROS) are well known to promote innate immune
responses during and in the absence of microbial infections. However, excessive or …

[HTML][HTML] NADH/NAD+ Redox Imbalance and Diabetic Kidney Disease

LJ Yan - Biomolecules, 2021‏ - mdpi.com
Diabetic kidney disease (DKD) is a common and severe complication of diabetes mellitus. If
left untreated, DKD can advance to end stage renal disease that requires either dialysis or …

Reactive oxygen species generation by reverse electron transfer at mitochondrial complex I under simulated early reperfusion conditions

CT Fukushima, IS Dancil, H Clary, N Shah… - Redox Biology, 2024‏ - Elsevier
Ischemic tissues accumulate succinate, which is rapidly oxidized upon reperfusion, driving a
burst of mitochondrial reactive oxygen species (ROS) generation that triggers cell death. In …

Site IQ in mitochondrial complex I generates S1QEL-sensitive superoxide/hydrogen peroxide in both the reverse and forward reactions

ET Gibbs, CA Lerner, MA Watson, HS Wong… - Biochemical …, 2023‏ - portlandpress.com
Superoxide/hydrogen peroxide production by site IQ in complex I of the electron transport
chain is conventionally assayed during reverse electron transport (RET) from ubiquinol to …

How the disruption of mitochondrial redox signalling contributes to ageing

B Castejon-Vega, MD Cordero, A Sanz - Antioxidants, 2023‏ - mdpi.com
In the past, mitochondrial reactive oxygen species (mtROS) were considered a byproduct of
cellular metabolism. Due to the capacity of mtROS to cause oxidative damage, they were …