Life Sciences Commons^™

How Will Climate Change-Induced Increases In Wildfire Frequency Affect Soil Microbial Communities?, Bahar Saadaie Jahromi

Waldo Library Student Exhibits

As climate change progresses, wildfires will become more common, increasing their impact on soil microbial ecosystems. This research examines how increased fire frequency affects soil microbial communities and whether effects differ for communities associated with different tree species. Soil samples were collected from under five individuals of four tree species within each of four 1-ha plots that had experienced fire from 24 to 111 years ago. Samples were analyzed for microbial DNA using next generation sequencing techniques in order to explore the influence of fire return interval and tree species on microbial diversity and community structure. Correlations were also examined …

Incorporating Worksheets To Enhance Active Learning In A Laboratory Course, Zakiya S. Kelley

STEM Instructional Graduate Teaching Assistant Posters

Study Goals:

To create worksheets that would aid the students in properly completing the required experiments and challenge them to do more than just follow the instructions. Each week there were often multiple experiments to be completed and pre-made samples to be observed within the class period. By providing the worksheet, I ensured the students completed all tasks and comprehended the covered material before class ended.

Objectives:

• To improve student participation and information retention when completing laboratory experiments in the classroom
• To emphasize key points of the topic being explored

Characterization Of A Neuroprotective Retinal Synapse After Inducing Glaucoma In Long Evans Rats, Cynthia A. Cooley-Themm

Research and Creative Activities Poster Day

Glaucoma is a group of degenerative retinal diseases characterized by progressive loss of retinal ganglion cells (RGCs) and their axons leading to irreversible loss of vision. Neuroprotection has been defined as any intervention that prevents optic nerve damage or RGC death. The neurotransmitter, acetycholine (ACh), has been linked to neuroprotection against excitotoxic cell death and neurodegenerative diseases of the central nervous system (CNS). Results from our lab have demonstrated that ACh provides neuroprotection against glutamate-induced excitotoxicity in isolated pig and rat RGCs in vitro. Additional studies using an in vivo rat model of glaucoma have shown that intravitreal injections or …

Parallel Integration Of Visual Inputs Evoking Discrete Motor Patterns Leading To Coordinated Avoidance Behaviors, John Jellies

Faculty Research and Creative Activities Award (FRACAA)

Each moment nervous systems are sampling inputs from many sensory sources in parallel and making decisions on what actions, if any, to take. Indeed, it is a universal feature of animal behavior to obtain information from multiple and varied external and intimal sensory systems simultaneously and these in ways that result in adaptive behavioral responses. Visual stimuli are important across all Phyla. The medicinal leech, Hirudo has an intricate visual system with 5 pairs of pigmented cephalic eyes at the anterior margin of the anterior sucker and a set of 7 pairs of simple sensilla including photoreceptors arranged dorsal to …

To What Extent Is The Established Conceptual Framework Of Animal Behaviour Portrayed In Textbooks?, Andrea M. K. Bierema, Renee S. Schwartz

Research and Creative Activities Poster Day

In 1963, Tinbergen revolutionized the study of animal behaviour by revamping the conceptual framework of the discipline. His framework suggests an integration of four questions: causation, ontogeny, survival value, and evolution. The National Research Council Committee on Undergraduate Biology Education to Prepare Research Scientists for the 21st Century (2003) suggests alignment between current research and undergraduate education. The purpose of this study, therefore, is to determine if the conceptual framework used by animal behaviour scientists, as presented in current primary literature, aligns with what students are exposed to in undergraduate biology education. After determining the most commonly listed textbooks from …

Gdnf's Expression In Slow- And Fast-Twitch Muscle Fibers Are Dependent On Exercise Intensity, Amy Morrison Gyorkos

Research and Creative Activities Poster Day

No abstract provided.

Purkinje Cell Association With Microglia/Macrophages In Degenerating Cerebellum Of Multiple System Atrophy Patients, Ashley A. Mckinney

Research and Creative Activities Poster Day

Multiple system atrophy (MSA) is a sporadic neurodegenerative disease with unknown etiology, involving Parkinson's disease, Autonomic Failure, and Olivopontocerebellar Atrophy (OPCA). To define a possible relationship between phagocytic immune cells and loss of Purkinje cells in MSA/OPCA, we measured the incidence of microglial/macrophages in close association with Purkinje cells and/or their axons and dendrites. Using immunocytochemistry methods on cerebellar sections from MSA and control brains from the New York Brain Bank at Columbia University, we identified Purkinje cells and their processes using anti-calbindin, and microglia/macrophages using anti-CD68. Calbindin labeled Purkinje cell body, axon, and dendritic profiles were counted in the …

Cholinergic Neurons Regulate And Utilize Gdnf Secreted By C2c12 Skeletal Muscle Cells In Culture, John-Mary Vianney, John Spitsbergen

Biological Sciences Faculty and Graduate Student Research

Glialcell line-derived neurotrophicfactor (GDNF) has been regarded as a potent survival factor for a subpopulation of neurons. It has been shown that GDNF expression is upregulated in skeletal muscle of patients with early stage of neuromuscular diseases such as amyotrophic lateral sclerosis (ALS). Previous results from our laboratory showed that neural cells regulate GDNF secretion by skeletal muscle; non-innervated skeletal muscle appear to secrete more GDNF compared to innervated skeletal muscle. Two aims were examined in the current study. First, to examine whether neural cells inhibit GDNF through acetylcholine release. Second was to examine whether differentiated NG108-15 neural cells secrete …

Changes In Gdnf Protein Content Of Skeletal Muscle Following Involuntary Exercise Are Long Lived, Kyle R. Kinnell, Monica J. Czarnopys, John Spitsbergen

Biological Sciences Faculty and Graduate Student Research

Glial-cell line derived neurotrophic factor (GDNF) is a neurotrophic factor produced by skeletal muscle. GDNF has been shown to be potent survival factor for motor neurons. We have previously shown that GDNF content in skeletal muscle is altered following exercise and GDNF levels 24 hours after the last bout of exercise are significantly different than those measured immediately after exercise. We sought to determine how long after exercise do GDNF protein levels remain altered. We removed extensor digitorum longus (EDL) and Soleus (SOL), 24 hr, 72 hr and 1 week following the last bout of involuntary exercise. Muscles were processed …

Exposure Of Nervous System Cells To Polychlorinated Biphenyls (Pcbs) Results In Significant Alterations In Levels Of Expression Of Neurotrophic Factors, Charles F. Ide, Jay C. Means, Trisha M. Basford, John Spitsbergen

Biological Sciences Faculty and Graduate Student Research

Toxic insult by PCBs results in learning and memory deficits in humans. Alterations in expression of neurotrophic factors and/or their receptors have been linked to changes in cognition. How PCBs affect cognition is not known. We propose that PCBs affect cognition by altering neurotrophic factor expression or effects. We exposed cultured C6 glial cells in medium containing PCB (Aroclor 1254 (10ppm)). Control cells were treated with DMSO or regular medium. Cells were incubated at 37o C for up to 72 hours. Medium samples were taken at 6hr, 24hr, 48hr, and 72hr intervals. Enzyme-linked immunosorbent assays (ELISA) were used to determine …