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Helicobacter Pylori-Induced Inhibition Of Vascular Endothelial Cell Functions: A Role For Vaca-Dependent Nitric Oxide Reduction, Nicholas P. Toblin, Gary Henehan, Ronan P. Murphy, John P. Atherton, Anthony F. Guinan, Steven W. Kerrigan, Dermot Cox, Paul A. Cahill, Philip M. Cummins
Helicobacter Pylori-Induced Inhibition Of Vascular Endothelial Cell Functions: A Role For Vaca-Dependent Nitric Oxide Reduction, Nicholas P. Toblin, Gary Henehan, Ronan P. Murphy, John P. Atherton, Anthony F. Guinan, Steven W. Kerrigan, Dermot Cox, Paul A. Cahill, Philip M. Cummins
Articles
Epidemiological and clinical studies provide compelling support for a causal relationship between Helicobacter pylori infection and endothelial dysfunction, leading to vascular diseases. However, clear biochemical evidence for this association is limited. In the present study, we have conducted a comprehensive investigation of endothelial injury in bovine aortic endothelial cells (BAECs) induced by H. pylori-conditioned medium (HPCM) prepared from H. pylori 60190 [vacuolating cytotoxin A (Vac(+))]. BAECs were treated with either unconditioned media, HPCM (0-25% vol/vol), or Escherichia coli-conditioned media for 24 h, and cell functions were monitored. Vac(+) HPCM significantly decreased BAEC proliferation, tube formation, and migration (by up to …
Β-Funaltrexamine Inhibits Inducible Nitric-Oxide Synthase Expression In Human Astroglial Cells, Randall L. Davis, Daniel J. Buck, Neda Saffarian, Shekhar Mohan, Udaya Desilva, Samodha C. Fernando, Craig W. Stevens
Β-Funaltrexamine Inhibits Inducible Nitric-Oxide Synthase Expression In Human Astroglial Cells, Randall L. Davis, Daniel J. Buck, Neda Saffarian, Shekhar Mohan, Udaya Desilva, Samodha C. Fernando, Craig W. Stevens
Samodha C. Fernando Publications
The inducible isoform of nitric-oxide synthase (iNOS) is involved in neuropathogenesis associated with infection and disease in the brain. Hence, there is considerable interest in the identification of therapeutic interventions to prevent iNOS-mediated pathology. Astroglia are a major site of iNOS expression during neuropathogenesis. To mimic a key component of neuroinflammation, human A172 astroglial cells were exposed in vitro to a cytokine mixture containing interferon γ, tumor necrosis factor α, and interleukin-1β, resulting in significant iNOS expression. Next, we assessed the effects of the mu opioid receptor antagonist, β-funaltrexamine (β-FNA), on cytokine induced iNOS expression in human astroglia. β-FNA dose-dependently …
Use Of Sildenafil To Facilitate Weaning From Inhaled Nitric Oxide In Children With Pulmonary Hypertension Following Surgery For Congenital Heart Disease, Jaclyn E. Lee, Simon C. Hillier, Chad A. Knoderer
Use Of Sildenafil To Facilitate Weaning From Inhaled Nitric Oxide In Children With Pulmonary Hypertension Following Surgery For Congenital Heart Disease, Jaclyn E. Lee, Simon C. Hillier, Chad A. Knoderer
Scholarship and Professional Work – COPHS
Pulmonary hypertension frequently complicates the postoperative management of patients after congenital cardiac surgery. Inhaled nitric oxide is an effective treatment option, but rebound pulmonary hypertension can occur upon its withdrawal. Sildenafil may facilitate its withdrawal by restoring cyclic guanosine monophosphate availability via phosphodiesterase-5 inhibition. The purpose of this study was to evaluate the use of sildenafil in facilitating weaning from inhaled nitric oxide after congenital cardiac surgery in patients who had previously failed weaning, and to compare the effects of sildenafil on pulmonary and systemic hemodynamics. Children who received sildenafil after cardiovascular surgery during a 23-month period at Riley Hospital …
The Effect Of Alcohol On Total Antioxidant Activity And Nitric Oxide Levels In The Sera And Brains Of Rats, Sevi̇l Kurban, İdri̇s Mehmetoğlu
The Effect Of Alcohol On Total Antioxidant Activity And Nitric Oxide Levels In The Sera And Brains Of Rats, Sevi̇l Kurban, İdri̇s Mehmetoğlu
Turkish Journal of Medical Sciences
Background: The present study investigated the effect of alcohol consumption on total antioxidant activity (AOA) and nitric oxide (NO) levels in the sera and brains of rats. Materials and methods: The study included 24 rats that were divided into 2 groups: the control group (n = 12) and the alcohol group (n = 12). Both groups were fed regular laboratory chow and tap water for a period of 2 months; however, the alcohol group received 15% (v/v) ethanol in their drinking water. Then, the rats were decapitated, and serum and brain AOA and NO levels were measured. Results: Both serum …