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Full-Text Articles in Organisms

Site Tolerance Of The Rada Intein, Chase Taul, Christopher Lennon Dr Dec 2020

Site Tolerance Of The Rada Intein, Chase Taul, Christopher Lennon Dr

Honors College Theses

Inteins (intervening proteins) invade genes at the DNA level and splice out at the protein level. Once thought of as only a parasitic type of a mobile genetic element, recent work suggests a mutualistic relationship has formed in some cases within bacterial and archaeal hosts. After translation, a precursor protein is formed with the intein between two exteins. The intein is catalytic and can excise itself out through protein splicing. Intein insertion is biased towards the active site of the protein and is thought to cause inactivation of the host protein prior to splicing. Intein splicing is responsive to a …


Uplc-Ms/Ms Analysis Of Cyp1a-Mediated Ethoxyresorufin-O-Deethylation Activity In The Rat Kidney Microsomes, Devaraj Venkatapura Chandrashekar, Reza Mehvar Jul 2020

Uplc-Ms/Ms Analysis Of Cyp1a-Mediated Ethoxyresorufin-O-Deethylation Activity In The Rat Kidney Microsomes, Devaraj Venkatapura Chandrashekar, Reza Mehvar

Pharmacy Faculty Articles and Research

Ethoxyresorufin (ER)-O-deethylation (EROD) activity has been widely used to assess cytochrome P450 1A (CYP1A) activity. The kinetics of CYP1A activity have been well characterized in the liver microsomes. However, studies in kidney microsomes are limited due to the much lower EROD activity in this organ. Here, we developed and validated a sensitive UPLC-MS/MS assay for the characterization of the EROD activity in the rat kidney microsomes. In a 50 µL reaction mixture, rat kidney microsomes (0.25 mg/mL) were incubated with ER (0.1–5 µM) and NADPH (1 mM) for 10 min. Acidic solvents, such as trichloroacetic acid or formic …


The Effect Of Grooming And Therapeutic Riding By Adolescents With Autism Spectrum Disorder On Equine Salivary Cortisol Concentrations, Morgan Shields Apr 2020

The Effect Of Grooming And Therapeutic Riding By Adolescents With Autism Spectrum Disorder On Equine Salivary Cortisol Concentrations, Morgan Shields

Undergraduate Honors Thesis Projects

The use of horses in therapeutic riding programs, especially for adolescents with autism spectrum disorder (ASD), has grown, yet the impact of grooming and riding on equine stress levels remains unknown. The aim of this study was to compare the effects of grooming and therapeutic riding on salivary cortisol concentrations of 10 horses in a therapeutic riding program. Samples were taken pre and post over two control and grooming days and over two series of nine therapeutic riding lessons for adolescents with ASD. On grooming days, each horse was groomed using a set protocol. On riding days, horses were ridden …


The Effect Of Hypoxia On Brain Cell Proliferation In Weakly Electric Fish, Petrocephalus Degeni, Kaitlin Klovdahl Apr 2020

The Effect Of Hypoxia On Brain Cell Proliferation In Weakly Electric Fish, Petrocephalus Degeni, Kaitlin Klovdahl

Senior Theses and Projects

Oxygen levels tend to remain at a steady state concentration in the Earth’s atmosphere, yet in some bodies of water, they can fluctuate and decrease drastically. Many organisms that inhabit the swamps, lakes, streams, and parts of the ocean where this occurs have evolved adaptations to manage this environmental uncertainty and continue normal oxygen consumption. The Lwamunda swamp in Uganda is chronically hypoxic, yet it is home to many species, including the electric fish Petrocephalus degeni. P. degeni are unusual by nature of their immense brain, and the Lwamunda swamp appears ill-suited for maintaining this large, metabolically active organ. To …


Neuroanatomy Of The Blackspotted Rockskipper, Entomacrodus Striatus, Pooja Dayal Jan 2020

Neuroanatomy Of The Blackspotted Rockskipper, Entomacrodus Striatus, Pooja Dayal

Williams Honors College, Honors Research Projects

Here I characterized the central neuroanatomy of the Blackspotted Rockskipper, Entomacrodus striatus, native to French Polynesia. The neuroanatomy of E. striatus has not been studied prior to this paper. I used several histology and antibody staining techniques to accomplish this, including Crystal Violet, immunohistochemistry, immunofluorescence, and Bielschowsky’s Silver Nitrate staining. This paper describes the most successful techniques used, identifies major structures in the species’ neuroanatomy, and also explains why studying E. striatus is important in the future of vertebrate research.