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- 1Alles, Sascha R
- 1Chen, Yishen
- 1Dimopoulos, Ioannis
- 1Gawad Gad,Sandra Sabry
- 1Hamilton, Trevor
- 1Hussein, Shaimaa A
This thesis examines the cellular basis of the acute (<1 hour) anti-allodynic actions of the clinically-approved neuropathic pain drug gabapentin (GBP) in rats at the level of the spinal dorsal horn and primary somatosensory cortex. Although the clinical effectiveness of the alpha-2-delta (α2δ)...
Antagonistic modulation of spontaneous neural network activities in isolated newborn rat brainstem preparations by opioids and methylxanthinesDownload
Apnea of prematurity is a common problem among the infants born before term pregnancy. Administration of respiratory stimulating drugs methylxanthines is the most frequent therapy, often in combination with the use of intubation. Opioids are used to reduce the pain associated with intubation,...
An individual’s body weight is tightly regulated by balancing food intake with energy expenditure. This is accomplished in part by secretion of the hormone leptin by adipocytes, an excess of which signals to reduce appetite and increase activity through action in the hypothalamic region of the...
Neuropathic pain afflicts 1.5-3% of the general population. It can be initiated by traumatic nerve injuries or diseases such as diabetic or post-herpetic neuropathy. Neuropathic pain is often initiated by abnormal spontaneous activity in sensory neurons and this provokes increased excitability of...
Electrophysiological and Genetic Aspects of Age-Related Macular Degeneration (AMD): Treatment ImplicationsDownload
Age-related macular degeneration (AMD) is considered a heterogeneous group of disorders. Although many genes influence susceptibility to disease, none has shown to be the primary contributor. To identify genetic contributors, distinct AMD phenotypes need to be established. We relied on...
Polycystic kidney disease (PKD) protein 2 Like 1 (PKD2L1), also called transient receptor potential polycystin-3 (TRPP3), regulates Ca2+-dependent hedgehog signalling in primary cilia, intestinal development and sour tasting but with an unclear mechanism. PKD2L1 is a Ca2+-permeable cation channel...
Influence of lipids (arachidonic acid and cholesterol) on calcium signalling in rodent pancreatic beta cellsDownload
Ca2+ is an important mediator of stimulus-secretion coupling in beta cells of the pancreatic islets, which secrete insulin in response to elevation in plasma glucose concentration. I studied the actions of two lipids, arachidonic acid (AA) and cholesterol, on enzymatically-dissociated single...
The computational ability of principal neurons and interneurons in the brain and their ability to work together in concert are thought to underlie higher order cognitive processes such as learning, memory, and attention. Dendrites play a very important role in neuronal information processing...
Glomus cells of the carotid body are peripheral chemoreceptors that detect changes in arterial oxygen levels. Hypoxia suppresses oxygen-sensitive K+ channels in glomus cells, resulting in cytosolic [Ca2+] ([Ca2+]i) elevation in glomus cells via the activation of voltage-gated Ca2+ channels. The...
Regulation of Cardiac Gap Junctional Communication: Metabolic regulation of Cx40 and Cx43 via phosphorylationDownload
Alterations in myocardial metabolism and cardiac electrophysiology associated with structural heart disease generate lethal arrhythmias. Differential levels of energy (ATP) supply and demand are generated with structural heart disease that is expected to activate 5’-amp activated protein kinase...