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Medicine and Health Sciences Commons

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All ETDs from UAB

Theses/Dissertations

2017

Mitochondria

Articles 1 - 4 of 4

Full-Text Articles in Medicine and Health Sciences

Activation Of Ampk To Diminish Sepsis-Induced Lung Injury, Nathaniel Bone Jan 2017

Activation Of Ampk To Diminish Sepsis-Induced Lung Injury, Nathaniel Bone

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Sepsis is the most frequent cause of death of hospitalized patients in modern ICUs. Severe infection, trauma, hemorrhage, burns, and surgery are significant causes of multi-organ injury and immune dysfunction that in turn primes for a high risk of secondary lung infections. In addition to detrimental inflammation, sepsis is linked to loss of metabolic plasticity due to mitochondrial dysfunction in immune cells and lung tissue. In particular, mitochondrial failure in lungs of critically ill septic patients is correlated with high mortality rates. We proposed that AMP-activated protein kinase (AMPK) activation, a major bioenergetic sensor and metabolic regulator, is a plausible …


The Impact Of Mitochondrial Genetic Background On Development Of Complex Multifactorial Diseases, Alexander Wendell Bray Jan 2017

The Impact Of Mitochondrial Genetic Background On Development Of Complex Multifactorial Diseases, Alexander Wendell Bray

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Complex multifactorial diseases such as cardiovascular disease (CVD) and cancer are a pervasive and inescapable component of modern society. However, the genetic elements that modulate individual susceptibility to these diseases remain poorly defined. Excessive mitochondrial oxidant production has been implicated in the initiation and progression of both CVD and cancer. Moreover, polymorphisms inherited on the mitochondria genome appear to influence mammalian mitochondrial function and oxidant generation. In the present study, mitochondrial-nuclear-eXchange (MNX) mice were used to directly assess the contribution of mitochondrial DNA (mtDNA) polymorphisms to atherosclerosis in the apoE deficient (apoE-/-) mouse model of hypercholesterolemia induced atherogenesis. ApoE-/- mice …


Autophagy In Mitochondrial Quality Control And Proteotoxicity In Neurons, Matthew Redmann Jan 2017

Autophagy In Mitochondrial Quality Control And Proteotoxicity In Neurons, Matthew Redmann

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Parkinson’s disease (PD) is the 2nd most common neurodegenerative disorder with aging as a significant risk factor. Sharing with aging brains, postmortem PD brains exhibit cellular deficits including autophagic dysfunction, mitochondrial dysfunction, and intracellular protein aggregates of alpha-synuclein. This dissertation will focus on the interplay between these key disease features. To that end, we coupled primary cortical neuronal cultures from either rats or mice with Seahorse extracellular flux, metabolomics and biochemical techniques. Autophagy is an important cell recycling program responsible for the clearance of damaged proteins and organelles. Bafilomycin A1 and chloroquine are compounds that inhibit autophagy by targeting the …


Acute And Chronic Regulation Of Skeletal Muscle Mitochondrial Function, Jonathan Lund Warren Jan 2017

Acute And Chronic Regulation Of Skeletal Muscle Mitochondrial Function, Jonathan Lund Warren

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Obesity and type 2 diabetes (T2D) represent a growing global burden on healthcare and financial resources. One hypothesis for the onset and exacerbation of these diseases is related to the role of mitochondria as the end users of products of the metabolism of the nutrients we consume and in mediating the oxidative state of the body through the production of reactive oxygen species (ROS). In order to meet the demands of a metabolic challenge and prevent excessive ROS production, there appear to be adaptations to mitochondrial physiology and morphology that can occur and we hypothesize that the ability of the …