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2010

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Erbb/Her Receptor Activation And Preclinical Efficacy Of Lapatinib In Vestibular Schwannoma, Sylwia Ammoun, Clare H. Cunliffe, Jeffrey C. Allen, Luis Chiriboga, Filippo G. Giancotti, David Zagzag, C. Oliver Hanemann, Matthias A. Karajannis Jan 2010

Erbb/Her Receptor Activation And Preclinical Efficacy Of Lapatinib In Vestibular Schwannoma, Sylwia Ammoun, Clare H. Cunliffe, Jeffrey C. Allen, Luis Chiriboga, Filippo G. Giancotti, David Zagzag, C. Oliver Hanemann, Matthias A. Karajannis

Peninsula Medical School

Vestibular schwannomas (VS) arising sporadically or in patients with neurofibromatosis type 2 (NF2) consistently lack expression of Merlin, a tumor suppressor. Conventional treatment options include surgery and radiotherapy but there is no validated medical option. Recent evidence suggests that Merlin deficiency may result in abnormal activation of receptor tyrosine kinases (RTKs) and downstream signaling, promoting tumor growth. Although small-molecule RTK inhibitors are widely available for clinical use, no such therapy has been validated in patients with VS. To screen for RTK activation, surgical VS specimens from patients with and without NF2 were analyzed by phospho-RTK profiling arrays. Downstream signaling pathway …


Impact Of Workplace Based Assessment On Doctors' Education And Performance: A Systematic Review., A Miller, J Archer Jan 2010

Impact Of Workplace Based Assessment On Doctors' Education And Performance: A Systematic Review., A Miller, J Archer

Peninsula Medical School

To investigate the literature for evidence that workplace based assessment affects doctors' education and performance.


Bio-Informatics Analysis Of A Gene Co-Expression Module In Adipose Tissue Containing The Diet-Responsive Gene Nnat., X Li.X, Pa Thomason, Dj Withers, J Scott Jan 2010

Bio-Informatics Analysis Of A Gene Co-Expression Module In Adipose Tissue Containing The Diet-Responsive Gene Nnat., X Li.X, Pa Thomason, Dj Withers, J Scott

Peninsula Medical School

Obesity causes insulin resistance in target tissues - skeletal muscle, adipose tissue, liver and the brain. Insulin resistance predisposes to type-2 diabetes (T2D) and cardiovascular disease (CVD). Adipose tissue inflammation is an essential characteristic of obesity and insulin resistance. Neuronatin (Nnat) expression has been found to be altered in a number of conditions related to inflammatory or metabolic disturbance, but its physiological roles and regulatory mechanisms in adipose tissue, brain, pancreatic islets and other tissues are not understood.


Effects Of Hif-1 And Hif2 On Growth And Metabolism Of Clear-Cell Renal Cell Carcinoma 786-0 Xenografts, S Biswas, H Troy, R Leek, Y-L Chung, Et Al Jan 2010

Effects Of Hif-1 And Hif2 On Growth And Metabolism Of Clear-Cell Renal Cell Carcinoma 786-0 Xenografts, S Biswas, H Troy, R Leek, Y-L Chung, Et Al

Peninsula Medical School

In cultured clear-cell renal carcinoma (CCRCC) 786-0 cells transfected with HIF1α (HIF-1+), HIF-2α (HIF-2+), or empty vector (EV), no significant differences were observed in the growth rates in vitro, but when grown in vivo as xenografts HIF-2α significantly increased, and HIF-1α significantly decreased growth rates, compared to EV tumors. Factors associated with proliferation were increased and factors associated with cell death were decreased in HIF-2+ tumors. Metabolite profiles showed higher glucose and lower lactate and alanine levels in the HIF-2+ tumors whilst immunostaining demonstrated higher pyruvate dehydrogenase and lower pyruvate dehydrogenase kinase 1, compared to control tumors. Taken together, these …