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Full-Text Articles in Physical Sciences and Mathematics
Striatal Dopamine Dynamics Upon Manganese Accumulation, Madiha Khalid
Striatal Dopamine Dynamics Upon Manganese Accumulation, Madiha Khalid
Wayne State University Dissertations
STRIATAL DOPAMINE DYNAMICS UPON MANGANESE ACCUMULATION
by MADIHA KHALID
August 2013
Advisor: Dr. Tiffany Mathews
Major: Chemistry (Analytical)
Degree: Doctor of Philosophy
Although manganese (Mn) is fundamental for many biological processes, exposure to excess amounts leads to a neurological disorder termed manganism. Due to its symptomatic similarity to Parkinson's disease, as well its preferential accumulation in dopamine rich brain regions, alterations in the dopamine system are implicated in the onset of manganism. In my research, Mn overexposure is mimicked via subcutaneous administration of manganese chloride to C57BL/6 mice over the course of seven days using a protocol that has been …
Development Of Matrix Assisted Ionization Methods For Characterization Of Soluble And Insoluble Proteins From Native Environments By Mass Spectrometry, Ellen Dela Victoria Inutan
Development Of Matrix Assisted Ionization Methods For Characterization Of Soluble And Insoluble Proteins From Native Environments By Mass Spectrometry, Ellen Dela Victoria Inutan
Wayne State University Dissertations
Matrix-assisted laser/desorption ionization (MALDI) and electrospray ionization (ESI) have made a huge impact in the analysis of biological materials. ESI has gained its popularity involving liquid based analysis, efficient fragmentation, chromatographic and electrophoretic separations but has a limitation for solubility restricted materials and surface analysis. MALDI is applicable to large biomolecule analysis and for surface methods useful for tissue imaging but is limited for structural characterization due to poor fragmentation and is ill suited for liquid based separation methods. The research presented here relates to new ionization methods that encompass the benefits of ESI and MALDI. These novel ionization methods …
Synthesis And Application Of Atp Analogs For Phosphorylation-Dependent Kinase-Substrate Crosslinking, Satish Kumar Garre Venkata Raghavendra
Synthesis And Application Of Atp Analogs For Phosphorylation-Dependent Kinase-Substrate Crosslinking, Satish Kumar Garre Venkata Raghavendra
Wayne State University Dissertations
Phosphorylation is an important post-translational modification that plays a key role in a variety of signaling cascades and cellular functions. Kinases phosphorylate protein substrates in a highly regulated manner and are promiscuous. Understanding kinase-substrate specificity has been challenging and there is a need for new chemical tools. To this end we developed -phosphate modified ATP photocrosslinking analogs ATP-ArN3 and ATP-BP, that crosslink substrate and kinase in a phosphorylation dependent manner. We have successfully demonstrated that ATP-ArN3 and ATP-BP can be used with natural kinase and substrates using cell lysates in vitro. We used our approach to identify novel kinases of …
Single-Stranded Dna Scanning And Deamination With Single-Molecule Resolution, Padhuk Gamarala Senavirathne
Single-Stranded Dna Scanning And Deamination With Single-Molecule Resolution, Padhuk Gamarala Senavirathne
Wayne State University Dissertations
SINGLE-STRANDED DNA SCANNING AND DEAMINATION WITH SINGLE-MOLECULE RESOLUTION
by
GAYAN SENAVIRATHNE
December 2013
Advisor: Dr. David Rueda & Dr.Ashok Bhagwat
Major: Chemistry (Analytical)
Degree: Doctor of Philosophy
APOBEC3G (Apo3G) and Activation-Induced cytidine Deaminase (AID) are the most notable members of APOBEC enzymes, a family of cytidine (C) deaminases with crucial functions in the immune system. In T cells, Apo3G deaminates C in viral cDNA to halt the replication of HIV 1 strains lacking viral infectivity factor (vif). In B cells, AID is required for the diversification of antibodies through initiation of somatic hypermutation (SHM), and class switch recombination (CSR), by …
Investigation Of Dopamine Dynamics In Bdnf+/- Mice Using In Vivo Microdialysis And Electrochemical Analysis Of Purine And Monoamine Molecules Using A Boron-Doped Diamond Electrode, Johnna A. Birbeck
Wayne State University Dissertations
The goal of the first study was to determine if a reduction in brain-derived neurotrophic factor (BDNF) levels in female mice lead to a dysregulation in their dopaminergic system. Through a series of in vivo microdialysis and slice voltammetry experiments, we have discerned that female BDNF+/- mice are hyperdopaminergic similar to their male BDNF+/- counterparts. The in vivo microdialysis method zero-net flux highlighted that female BDNF+/- mice had increased extracellular dopamine (DA) levels, while stimulated regional release by high potassium potentiated DA release from vesicular mediated depolarization. Using the complementary technique of fast scan cyclic voltammetry, electrical …