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Articles 1 - 10 of 10
Full-Text Articles in Molecular and Cellular Neuroscience
Characterization Of The Circadian Properties Of Runt-Related Transcription Factor 2 (Runx2) And Its Role In The Suprachiasmatic Nucleus, Meghan E. Reale
Characterization Of The Circadian Properties Of Runt-Related Transcription Factor 2 (Runx2) And Its Role In The Suprachiasmatic Nucleus, Meghan E. Reale
Electronic Thesis and Dissertation Repository
Circadian rhythms orchestrate physiological, behavioral and cognitive processes in order to anticipate and adapt organisms to key environmental cues. These endogenously driven oscillations are generated by a network of interlocked auto-regulatory transcriptional-translational feedback loops driven forward by the Bmal1/Clock heterodimer transcription factor. Given the ubiquitous and dynamic quality of circadian rhythms, the identification of factors involved in the coordination and regulation of the endogenous oscillations is central in broadening our understanding of biological timing systems. In an examination of gene expression in the mammalian central circadian pacemaker, the hypothalamic suprachiasmatic nucleus (SCN), revealed a previously unreported rhythmic expression of runt-related …
Sexual Reward And Depression, Andrea R. Di Sebastiano
Sexual Reward And Depression, Andrea R. Di Sebastiano
Electronic Thesis and Dissertation Repository
Sexual behavior in male rats is a complex rewarding behavior and many neurotransmitters and neuropeptides play an important role in mediation of sexual performance, motivation and reward. The hypothalamic neuropeptide orexin has been shown play a key role in reward associated with food and drugs of abuse, but the role of this neuropeptide in control of sexual performance, motivation and reward is currently unclear. First, it was shown that orexin neurons in the hypothalamus are activated during sexual performance and reward. Next, using cell specific lesions of orexin neurons it was demonstrated that orexin is involved in arousal and anxiety, …
The Characterization Of The Fibroblast Growth Factor Receptor Substrate 3 And Its Role In Regulating Microtubule Dynamics And Molecular Transport In The Brain, Sarah J. Gamble
Electronic Thesis and Dissertation Repository
The neuronal cytoskeleton is responsible for governing dynamics such as neurite extension and cortex development. In particular, microtubules (MTs) and their associated proteins, and molecular motors, have been shown to be critical in many neuronal processes such as intracellular molecular transport and neuron differentiation. The fibroblast growth factors (FGFs) act as powerful morphogens that have been shown to play a role in regulating cortical development. FGFs activate receptor tyrosine kinases, of which fibroblast growth factor receptor substrate 3(FRS3) has been shown to interact with, to mediate downstream signaling cascades (regulating cell proliferation and differentiation). In addition to FRS3’s role in …
Identification Of A Molecular Opiate-Addiction Memory Switch In The Basolateral Amygdala, Danika C.A. Lyons
Identification Of A Molecular Opiate-Addiction Memory Switch In The Basolateral Amygdala, Danika C.A. Lyons
Electronic Thesis and Dissertation Repository
The molecular mechanisms involved in acquiring opiate-related associative memories are largely unknown. One neural region implicated in the formation of opiate-related memories is the basolateral nucleus of the amygdala (BLA). Transmission through dopamine (DA) receptors within the BLA controls the formation of opiate-related reward memories (Lintas et al., 2011; Lintas et al., 2012). Specifically, transmission through DA D1 receptors controls opiate reward memory formation in animals that are previously naïve to opiate exposure. However, once opiate dependence and withdrawal are present, intra-BLA DA-mediated control of opiate reward memory processing switches to a DA D2 receptor substrate. These findings demonstrate a …
Structural Analysis Of The Drosophila Innexin Shakb: Role Of The N-Terminus In Rectifying Electrical Synapses, William Marks
Structural Analysis Of The Drosophila Innexin Shakb: Role Of The N-Terminus In Rectifying Electrical Synapses, William Marks
Biology Theses
Gap junction channels mediate direct intercellular communication in all multicellular animals. They are comprised of the connexin family of proteins in vertebrates and the innexin family in prechordates. Connexins and innexins share many functional and structural similarities as orthologous proteins. Both types are capable of forming electrical synapses. Rectifying junctions are specialized electrical synapses found in neural systems that control escape responses. It has been shown that heterotypic gap junction channels mediate asymmetric properties of rectifying junctions. Shaking B N+16 and Shaking B lethal are variants of the ShakB locus in Drosophila and the organization of these innexins into heterotypic …
Effects Of Maternal Low Protein Diet On Expression Of Drug Transporters In The Blood-Brain Barrier Of Adult Offspring, Bonnie L. Hastings
Effects Of Maternal Low Protein Diet On Expression Of Drug Transporters In The Blood-Brain Barrier Of Adult Offspring, Bonnie L. Hastings
Senior Theses
Adverse uterine environment, manifested as low birth weight (LBW), has been shown to predispose individuals to hypertension, diabetes, and obesity by mechanisms that are just beginning to be understood. One of the mechanisms is the dysregulation of the expression or function of drug transport proteins, such as the organic anion transporter (OAT) family, which are crucial for the transport of various endogenous and exogenous compounds into and out of all organs, especially the brain. Hence, we examined the status of select drug transporters in the blood-brain barrier (BBB), using a LBW rat model. Maternal low protein diet (LPD) during gestation …
Detection Of Sk2 Channels On Hippocampal Neurons, Jamie L. Maciaszek
Detection Of Sk2 Channels On Hippocampal Neurons, Jamie L. Maciaszek
Master's Theses
Calcium-activated small conductance potassium channels (SK) are crucial for synaptic plasticity, sleep, and learning and memory (Hammond, Bond et al. 2006; Cueni, Canepari et al. 2008; Lin, Lujan et al. 2008). Despite the recent progress on SK channel physiology, the precise spatial organization of SK channels in neurons has remained unknown. Such knowledge is critical as the subcellular distribution of SK channels is an important determinant of neuronal excitability. Currently, there are no techniques to image ion channel distribution quantitatively at the nanometer scale in living cells. Here, it is demonstrated that integration of natural toxins with single molecule atomic …
The Cellular Nucleic Acid Binding Protein Regulates The Alzheimer’S Disease Β-Secretase Protein Bace1, Christopher J. Holler
The Cellular Nucleic Acid Binding Protein Regulates The Alzheimer’S Disease Β-Secretase Protein Bace1, Christopher J. Holler
Theses and Dissertations--Molecular and Cellular Biochemistry
Alzheimer’s disease (AD) is the most common neurodegenerative disease affecting the elderly population and is believed to be caused by the overproduction and accumulation of the toxic amyloid beta (Aβ) peptide in the brain. Aβ is produced by two separate enzymatic cleavage events of the larger membrane bound amyloid precursor protein, APP. The first, and rate-limiting, cleavage event is made by beta-secretase, or BACE1, and is thus an attractive therapeutic target. Our lab, as well as many others, has shown that BACE1 protein and activity are increased in late-stage sporadic AD. We have extended these findings to show that BACE1 …
A Proposal To Test The Effects Of Factor Ecat1 On Pluripotency, From Reprogramming To Differentiation Of Human Somatic Cells, Vritti R. Goel
A Proposal To Test The Effects Of Factor Ecat1 On Pluripotency, From Reprogramming To Differentiation Of Human Somatic Cells, Vritti R. Goel
CMC Senior Theses
The field of stem cell research has been growing more because of the interest in using stem cells to cure diseases and heal injuries. Human embryonic stem cells, because of the controversy surrounding them—and subsequently the difficulties in acquiring samples of the existing aging cell lines—can only be used in limited capacities. While the development of induced pluripotent stem cells in the last decade has allowed the field to progress closer to medical treatments, the low efficiency of reprogramming a somatic cell to a pluripotent state, and the vast molecular and genomic differences between human embryonic stem cells and human …
Investigating The Role Of Prion Protein Polymorphisms On Prion Pathogenesis, Eri Saijo
Investigating The Role Of Prion Protein Polymorphisms On Prion Pathogenesis, Eri Saijo
Theses and Dissertations--Microbiology, Immunology, and Molecular Genetics
Transmissible spongiform encephalopathies (TSEs), also known as prion diseases, are lethal and infectious neurodegenerative diseases of humans and animals. The misfolding of the normal, or cellular isoform of the prion protein (PrPC) into the abnormal disease-associated isoform of PrP (PrPSc) could change the properties of PrP, consequently, PrPSc has lethal infectivity to transmit diseases. The proteinaceous infectious particle consisting mainly of PrPSc is called prion. Transmissibility of prions is strongly influenced by multiple factors including PrP polymorphisms, species barriers (PrP sequence specificity) and prion strains (conformational specificity) by unknown mechanisms. Even though the ability …