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Targeting Pten For Therapy In Cancer And Ptenopathies, Emily Palumbo Jul 2019

Targeting Pten For Therapy In Cancer And Ptenopathies, Emily Palumbo

USF Tampa Graduate Theses and Dissertations

PTEN, a dual protein and lipid phosphatase, regulates a myriad of cellular functions including PI3K pathway signaling, cell migration, proliferation, invasion and apoptosis. PTEN mutations often lead to multiple malignancies, including prostate, breast, endometrial, skin and brain cancers, associated with hyperactive PI3K signaling. PTEN mutations have also been associated with a variety of other diseases, classified as PTEN Hamartoma Tumor Syndromes (PHTS). In addition, compromised function or reduced expression of PTEN due to non-genomic mechanisms are associated with many types of hyperproliferative diseases, such as restenosis and neoplastic diseases, including melanoma, lung, breast, prostate and colon cancers. Although PI3K pathway …


Roux-En-Y Gastric Bypass Attenuates Obesity-Related Liver Injury, Drew Alan Rideout Jul 2019

Roux-En-Y Gastric Bypass Attenuates Obesity-Related Liver Injury, Drew Alan Rideout

USF Tampa Graduate Theses and Dissertations

Obesity is a growing epidemic in the United States with significant co-morbidities. Non-Alcoholic Fatty Liver Disease (NAFLD) is a prevalent manifestation of obesity that can lead to cirrhosis. Roux-en-Y gastric bypass (RYGB) results in substantial long-term weight loss and resolution of obesity-related metabolic diseases. There appears to be a weight-independent molecular mechanism for the improvement of diabetes mellitus and NAFLD after RYGB, which is poorly understood. Obesity is associated with chronic inflammation that accompanies the hepatic steatosis. Through unknown mechanisms, RYGB in humans increases serum levels of the fat-derived adipocytokine, adiponectin. Adiponectin (an anti-inflammatory cytokine) is known to have a …