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Articles 1 - 22 of 22
Full-Text Articles in Life Sciences
Teaching Natural And Artificial Selection In Production Agriculture, Madhav P. Nepal, Clayton W. Scott
Teaching Natural And Artificial Selection In Production Agriculture, Madhav P. Nepal, Clayton W. Scott
iLEARN Teaching Resources
In this lesson, students will learn how natural selection and artificial selection impact both production agriculture and biological sciences. A natural selection is a mechanism that favors heritable traits that increase species survival and reproduction. Artificial selection is a selective breeding, where humans select for desirable traits in agricultural products.
Antidepressant Effects On Rem Sleep, Mitchel Adams
Antidepressant Effects On Rem Sleep, Mitchel Adams
Biology and Microbiology Graduate Students Plan B Research Projects
Individuals who deal with depression are typically prescribed antidepressants in order to alleviate the depressive symptoms that they may be having. Polysomnographic sleep research has revealed that depression is associated with altered sleep architecture and distorted REM sleep quality.2 Specifically, increased REM sleep duration and density have proved to be markers that predict recurrence and relapse for depressed individuals. REM sleep serves to stimulate regions of the brain that are important with learning and memory consolidation. However, an increased duration of REM sleep in depressed individuals proves to be unfavorable. Antidepressants drugs aim to weaken sleep quality, which is …
Freestanding Emergency Departments: A Possible Solution To Rural Hospital Closure, Emily Steadman
Freestanding Emergency Departments: A Possible Solution To Rural Hospital Closure, Emily Steadman
Biology and Microbiology Graduate Students Plan B Research Projects
Freestanding emergency departments have become more and more common over the years and have started to pop up in many states across the country. A freestanding emergency department is a facility that provides healthcare in the form of emergency services separate from those at a hospital. FEDs can be seen as independent structures that are distinct from hospital-based emergency rooms and urgent facilities. Just as freestanding emergency departments have spread across the country in a bit of a frenzy, another prevalent issue has been sweeping the country, the closure of rural hospitals. Over the last decade rural hospitals have struggled …
How Exercise Impacts The Brain And Cognition, Cody Larson
How Exercise Impacts The Brain And Cognition, Cody Larson
Biology and Microbiology Graduate Students Plan B Research Projects
Physical exercise has been shown to impact the brains composition and functionality. The changes that arise in the structure of brain, as result of engaging in physical exercise, give rise to cognitive changes. Structural changes are observed most notably in the prefrontal cortex and hippocampus. These changes are preceded by elevations in cerebral blood flow, and growth factors, resulting increased neuroplasticity and neurogenesis. Frequency, duration, intensity, and type of physical exercise can have differing effects on the brain. Moderate intensity aerobic exercise presents the most profound improvements in memory, and inhibitory control over time.
Epigenetic Modifications Due To Maternal Diet, Amanda Thaler
Epigenetic Modifications Due To Maternal Diet, Amanda Thaler
Biology and Microbiology Graduate Students Plan B Research Projects
Obesity is a growing exponentially to be a health issue globally. Worldwide the rate of obesity has nearly doubled since 1980, with approximately 200 million adult men and 300 million adult women now being considered obese. We are also seeing growing percentages of woman of reproductive age being considered obese (BMI>30). Maternal obesity is known to increase the likelihood of developing complications during the pregnancy such as gestational diabetes and pre-eclampsia. These conditions create the environment for the growing fetus that are more difficult than that of a healthy pregnancy. The Developmental programming hypotheses links the environment of development …
Role Of Adiponectin In Neuroinflammation & Neuroprotection, Nathan Stadem
Role Of Adiponectin In Neuroinflammation & Neuroprotection, Nathan Stadem
Biology and Microbiology Graduate Students Plan B Research Projects
Microglial cells play a significant role in defense of the brain. However, in certain disease states, their response can lead to inflammation that can be detrimental to the survival of brain cells and have harmful effects on a person’s brain activity. Currently, the treatment options for microglial induced neuroinflammation are relatively limited. Adiponectin has recently appeared as a potential moderator of neuroinflammation as well as a promoter of neuroprotection. Adiponectin is a naturally occurring cytokine that has been shown to play a role in a multitude of processes throughout the body including potential as a microglial induced neuroinflammation. Adiponectin’s role …
A Social Review Of The Opioid Epidemic: The History, Pathophysiology, And Effects On Rural America, Holly J. Goehring
A Social Review Of The Opioid Epidemic: The History, Pathophysiology, And Effects On Rural America, Holly J. Goehring
Biology and Microbiology Graduate Students Plan B Research Projects
One of the more pressing issues in modern day health care is the nationwide heath care crisis known as the opioid epidemic. The beginning of this literature review will focus on the history of opioid use and early prescription rates, as well as the summary and definitions of the drugs involved in the current opioid epidemic. The review then shifts to the pathophysiology of addiction involving the activation of opioid receptors and opioid use disorder. The main focus of this literature review is the societal impacts of the opioid epidemic, making special reference to the economic burden and effects on …
Intermittent Fasting (If) Promotes Longevity Through Alterations Of The Mammalian Target Of Rapamycin (Mtor) And The Epigenome, Tayt Boeckholt
Intermittent Fasting (If) Promotes Longevity Through Alterations Of The Mammalian Target Of Rapamycin (Mtor) And The Epigenome, Tayt Boeckholt
Biology and Microbiology Graduate Students Plan B Research Projects
Many studies with a range of subjects from Nematodes to Homo sapiens have found intermittent fasting (IF) to significantly improve the cardiometabolic health of individuals, but how IF promotes longevity through epigenetic modulations remains a sparse understanding throughout the literature. The process of aging may be characterized by a loss of cellular identity sprouted from a disrupted epigenome rich with information for a cell, while also losing the ability to recycle ineffective cellular components. The nutrient-sensing kinase Mammalian Target of Rapamycin (mTOR) is disrupted during bouts of fasting which allows for the recycling of cellular components through increased autophagy. Furthermore, …
The Oral Microbiome And Its Effects On Human Systemic Diseases, Hee Chang Shin
The Oral Microbiome And Its Effects On Human Systemic Diseases, Hee Chang Shin
Biology and Microbiology Graduate Students Plan B Research Projects
In the past decade, scientists and healthcare professionals have gained interest in the microbiome and its function as part of the human body. The two most diverse microbiome environments are found in the gut and the oral cavity. While the gut microbiome has been investigated more deeply and continues to be a great interest, the oral microbiome is in comparison a more recent subject with fewer reports on the topic. The purpose of this review paper is to highlight the main human systemic diseases associated with the oral microbiome and to discuss how our understanding of the oral microbiome’s effect …
Hiv Vaccine Development: The Importance Of Gp120 Variable Loop 3 For The Survival Of The Human Immunodeficiency Virus And The Potency Of The Neutralizing Antibody To Bind To The Variable Loop 3, Riham Hussien
Biology and Microbiology Graduate Students Plan B Research Projects
The tendency for the Human Immunodeficiency Virus (HIV) to proliferate and mutate it’s trimeric envelop (Env), is one of the reasons why it’s a challenge for an antibody-based vaccine to be developed. Glycoprotein 160 (gp160,) which consists of glycoprotein 120 (gp120) and glycoprotein 41 (gp41), is the main focus for a research vaccine design. Gp120 consists of an outer membrane, inner membrane and bridging sheet. The protein is trimeric, and non-covalently binds to gp41. The outer domain is where the neutralizing antibody bind, such as 2G12, immunoglobulin G1b12, and anti-V3 antibodies. V3 stands for the Variable loop 3, gp120 has …
Parkinson’S Disease: Current Treatment Options, Luke Kovaleski
Parkinson’S Disease: Current Treatment Options, Luke Kovaleski
Biology and Microbiology Graduate Students Plan B Research Projects
Parkinson’s Disease is a neurodegenerative disease that is caused by a lack of dopamine. This lack of dopamine has many effects on a person’s body who has Parkinson’s Disease including loss of motor control, slowed movement (bradykinesia), changes in speech, impaired posture and balance, and muscle rigidity. The object of this paper is to explore some of the many different options for treatment of symptoms of Parkinson’s Disease that are currently available. There is not one over-arching treatment that can alleviate the symptoms that are caused by Parkinson’s Disease. However, if multiple treatments are used together, a patient who is …
Fishes Of The Dakotas, Kathryn Schlafke
Fishes Of The Dakotas, Kathryn Schlafke
Electronic Theses and Dissertations
Biological reference materials play a critical role in studies of species biodiversity, biology, distribution, and historic diversity. Since the publications Fishes of North Dakota (Hankinson, 1929) and Fishes of South Dakota (Bailey and Allum, 1962), no new books have attempted to update the knowledge gained from the past decades of fish surveys and incorporate georeferenced collections at the state level. The last published book with the most complete accounts of fishes from North Dakota and South Dakota is the Distribution of Fishes in North and South Dakota Basins affected by the Garrison Diversion Unit (Owen et al. 1981) which includes …
Crispr/Cas9 Whole Genome Screens Reveal Novel Regulators Of Endocytic Processes In Macrophages, Jared Wollman
Crispr/Cas9 Whole Genome Screens Reveal Novel Regulators Of Endocytic Processes In Macrophages, Jared Wollman
Electronic Theses and Dissertations
Macrophages maintain tissue homeostasis by identifying and eliminating threats within their tissue microenvironment. Pattern recognition receptors allow macrophages to recognize and internalize specific ligands while macropinocytosis allows the internalization of all extracellular solutes from their environment. Without pattern recognition receptors, pathogens may grow unchecked if they cannot be detected, and without macropinocytosis, macrophages struggle to detect and move around their environment. This thesis presents the results of CRISPR/Cas9 whole-genome screens used to identify the regulators of both endocytosis (Chapter 2) and macropinocytosis (Chapter 3). In Chapter 2, we report genes regulating dextran uptake in primary murine macrophages and reveal Mrc1-mediated …
Genetic Study Of Alkane Production And Oxic Nitrogen Fixation In Anabaena Sp. Pcc 7120, Jaimie L. Gibbons
Genetic Study Of Alkane Production And Oxic Nitrogen Fixation In Anabaena Sp. Pcc 7120, Jaimie L. Gibbons
Electronic Theses and Dissertations
Anabaena sp. PCC 7120 is a filamentous, nitrogen-fixing cyanobacterium that uses spatial separation to perform photosynthesis and nitrogen fixation simultaneously. Under fixed nitrogen limiting conditions, Anabaena 7120 forms specialized cells, called heterocysts, to fix nitrogen. In this research, I sought to add to the knowledge surrounding the process of heterocystous nitrogen fixation in Anabaena 7120. Cyanobacteria universally produce alkanes, which have been suggested to play a role in helping the organism adapt to abiotic stress, such as diazotrophic conditions. In my first study, I sought to identify the genes required for production of the hydrocarbon heptadecane (C17H36). Through using a …
Hedgehog Signaling Inhibators And Their Importance For Cancer Treatment, Haileselassie Tefera
Hedgehog Signaling Inhibators And Their Importance For Cancer Treatment, Haileselassie Tefera
Biology and Microbiology Graduate Students Plan B Research Projects
The Hedgehog (Hh) signaling pathway plays a crucial role during embryonic development as well as tissue maintenances in adults. Deregulated Hh signaling has been implicated in different diseases and conditions including cancer. Previously, the mechanisms of Hh signaling pathway and its role in cancer formation have been studied and has led to the development of therapeutic drugs. Among those agents, vismodegib and sonidegib are FDA approved drugs to treat basal cell carcinoma and other cancers. Up to date, several hedgehogs (Hh) signaling inhibitors and drugs have been made and evaluating for cancer treatment. In this review, I will discuss the …
Exploring The Properties Of Chitin For Promoting Tissue Engineering And Repair, M. Jahir Raihan
Exploring The Properties Of Chitin For Promoting Tissue Engineering And Repair, M. Jahir Raihan
Electronic Theses and Dissertations
No abstract provided.
Utilizing Rhizospheric And Bacterial Endophytes For Use As Potential Bio-Fertilizers For Sustainable Agricultural Production, Vincent Peta
Utilizing Rhizospheric And Bacterial Endophytes For Use As Potential Bio-Fertilizers For Sustainable Agricultural Production, Vincent Peta
Electronic Theses and Dissertations
Brassica carinata crop production offers an exciting alternative approach to the energy crisis when looking at novel ways to power our motor vehicles. Bacterial endophytes, while residing in host-plant tissues, offer a wide array of plant growth promotion benefits such as nitrogen fixation to impart nitrogen (N) nutrition, phosphate (P) solubilization to make soil-bound phosphate more mobile in soil for plant uptake, can suppress pathogenic microbes such as fungus and produce plant growth hormones to offset stress incurred by the plant. Previous literature has shown that there is large interest in studying endophytes from economically important crops such as wheat, …
A Natural Antimicrobial From Bacillus Subtilis As A Biosanitizer For Resilient Membrane Biofilms, Pratishtha Verma
A Natural Antimicrobial From Bacillus Subtilis As A Biosanitizer For Resilient Membrane Biofilms, Pratishtha Verma
Electronic Theses and Dissertations
The microbial attachment and colonization on separation membranes lead to biofilm formation. Some selective isolates within the biofilm constitutive microflora acquire resistance and emerge predominant over prolonged use of the membrane. Thus, proving the cleaning and sanitization protocols to be ineffective in adequately removing resilient biofilms. This subsequently leads to selecting microbial resistance within the constitutive microflora to almost all antimicrobial treatments and hence, creates a need to develop novel alternative strategies to control biofilm formation on membrane surfaces. The first research project under this study was designed to understand the microbial interactions and emergence of predominance within biofilm constitutive …
Interaction Of Streptomyces Closely Associated With Bacillus In Nitrogen-Limiting Conditions, Aminya Baniya
Interaction Of Streptomyces Closely Associated With Bacillus In Nitrogen-Limiting Conditions, Aminya Baniya
Electronic Theses and Dissertations
Biological Nitrogen Fixation is the process of conversion of atmospheric dinitrogen into ammonia which is performed by symbiotic as well as free-living diazotrophic bacteria. A previous project to isolate free-living nitrogen fixing bacteria from a natural prairie yielded Streptomyces which grew on nitrogen free medium. Genome sequencing of three isolates revealed the presence of a second 16S rRNA gene sequence aligning with Bacillus, however repeated streaking only yielded Streptomyces colonies. The aim of this research was to characterize the interaction of three Streptomyces isolates that grow under nitrogen-free conditions, and appeared to be associated with Bacillus. The separation of Bacillus …
Development Of Methods To Improve Lactose Recovery From Permeate And Drying Characteristics Of Greek Acid Whey, Venkateswarlu Sunkesula
Development Of Methods To Improve Lactose Recovery From Permeate And Drying Characteristics Of Greek Acid Whey, Venkateswarlu Sunkesula
Electronic Theses and Dissertations
Growth of higher protein dairy products and ingredients such as cheese, Greek yogurt, whey protein concentrates, and milk protein concentrates is limited by the amount of co-product generated and the ability to process them into value added ingredients. Finding value for all the co-products will help dairy industry to meet the growing demand for dairy protein products and ingredients. Commercial scale evaluation of new technologies for improving lactose crystallization and drying ability of Greek yogurt acid whey will help dairy industry to better utilize different dairy co-products. Commercially, lactose is manufactured from concentrated permeate by cooling and separating α-lactose monohydrate …
Analysis Of Two Maize Mutations That Arose After Exposure To Radiation From A Plutonium-Beryllium Source And Developing Molecular Markers For Antimorph Aei1-5180, An Alternative To Aei To Increase Amylose Content In Maize Endosperm, Prameela Awale
Electronic Theses and Dissertations
This thesis consists of two independent projects dealing with two different aspects of maize. The first project is about the maize reproduction, where we try to uncover the candidate genes of two mutations that affect pollen viability and successful fertilization. The second project is about maize endosperm starch, where we developed molecular markers to characterize a mutant allele that knocks a major starch branching enzyme in maize.
Analysis of two maize mutations that arose after exposure to radiation from a plutonium-beryllium source
Maize is a monoecious and diclinous plant. Sexual reproduction takes place by the fusion of haploid male and …
Investigating Links Between Soil Microbial Structure And Function In Three Major Plant Communities Across Temporal Scales Of Arctic Alaska, Kaj Lynoe
Electronic Theses and Dissertations
Arctic microbial systems continue to get attention today as our understanding regarding their structure and function in a changing system is paramount to C feedbacks with warming and changes in precipitation. Plant communities and microbial community processes across the Arctic landscape are central to understanding tundra ecosystem processes because environmental conditions and plant community structure drive microbial cycling of soil organic matter. Here, we want to understand how soil microbial respiration, mineralization, biomass, and community composition are linked to three Alaskan tundra plant communities, namely Shrub, Tussock, and Sedge tundra and the seasonal variability in this system. A total of …