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Full-Text Articles in Medical Sciences

Mitochondrial Phenotypes In Purified Human Immune Cell Subtypes And Cell Mixtures, Shannon Rausser, Caroline Trumpff, Marlon A. Mcgill, Alex Junker, Wei Wang, Siu-Hong Ho, Anika Mitchell, Kalpita R. Karan, Catherine Monk, Suzanne C. Segerstrom, Rebecca G. Reed, Martin Picard Oct 2021

Mitochondrial Phenotypes In Purified Human Immune Cell Subtypes And Cell Mixtures, Shannon Rausser, Caroline Trumpff, Marlon A. Mcgill, Alex Junker, Wei Wang, Siu-Hong Ho, Anika Mitchell, Kalpita R. Karan, Catherine Monk, Suzanne C. Segerstrom, Rebecca G. Reed, Martin Picard

Psychology Faculty Publications

Using a high-throughput mitochondrial phenotyping platform to quantify multiple mitochondrial features among molecularly defined immune cell subtypes, we quantify the natural variation in mitochondrial DNA copy number (mtDNAcn), citrate synthase, and respiratory chain enzymatic activities in human neutrophils, monocytes, B cells, and naïve and memory T lymphocyte subtypes. In mixed peripheral blood mononuclear cells (PBMCs) from the same individuals, we show to what extent mitochondrial measures are confounded by both cell type distributions and contaminating platelets. Cell subtype-specific measures among women and men spanning four decades of life indicate potential age- and sex-related differences, including an age-related elevation in mtDNAcn, …


Genetic Approach To Elucidate The Role Of Cyclophilin D In Traumatic Brain Injury Pathology, Ryan D. Readnower, W. Brad Hubbard, Olivia J. Kalimon, James W. Geddes, Patrick G. Sullivan Jan 2021

Genetic Approach To Elucidate The Role Of Cyclophilin D In Traumatic Brain Injury Pathology, Ryan D. Readnower, W. Brad Hubbard, Olivia J. Kalimon, James W. Geddes, Patrick G. Sullivan

Spinal Cord and Brain Injury Research Center Faculty Publications

Cyclophilin D (CypD) has been shown to play a critical role in mitochondrial permeability transition pore (mPTP) opening and the subsequent cell death cascade. Studies consistently demonstrate that mitochondrial dysfunction, including mitochondrial calcium overload and mPTP opening, is essential to the pathobiology of cell death after a traumatic brain injury (TBI). CypD inhibitors, such as cyclosporin A (CsA) or NIM811, administered following TBI, are neuroprotective and quell neurological deficits. However, some pharmacological inhibitors of CypD have multiple biological targets and, as such, do not directly implicate a role for CypD in arbitrating cell death after TBI. Here, we reviewed the …