Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Bacteria (2)
- Amino acids (1)
- BLSS (1)
- C. difficile (1)
- Clindamycin (1)
-
- Clostridioides [Clostridium] difficile (1)
- Diseases (1)
- Evolution (1)
- Extremophilic algae (1)
- Hamster model (1)
- Life on mars (1)
- Low pressure chamber (1)
- Microbiome (1)
- Molds (Fungi) control (1)
- Nevada (1)
- Omptins (1)
- Outer membrane protease IcsP (1)
- Outer membrane proteases (1)
- Primate (1)
- Shigella flexneri (1)
- Shigellosis (1)
- Space biology (1)
- Stachybotrys (1)
- Toxigenic fungi health aspects (1)
- Vancomycin (1)
- Publication
- Publication Type
Articles 1 - 10 of 10
Full-Text Articles in Medicine and Health Sciences
Comparison Of Molecular Methods For Absolute Quantification Of Low-Abundant Bacterial Communities In Milk, Carmina Chavez, Janet E. Williams, Michelle K. Mcguire, Mark A. Mcguire
Comparison Of Molecular Methods For Absolute Quantification Of Low-Abundant Bacterial Communities In Milk, Carmina Chavez, Janet E. Williams, Michelle K. Mcguire, Mark A. Mcguire
Undergraduate Research Symposium Posters
Milk was historically thought to be generally sterile. However, use of culture-dependent and culture-independent methods has provided strong evidence that milk has a microbiome (Figure 1). Culture-independent methods (e.g., high-throughput sequencing) have demonstrated the diversity of microbes in milk but provide relative abundance data. Culture-dependent methods have indicated microbial communities in milk are of low abundance, but it is challenging to measure absolute quantities accurately. Real-time quantitative polymerase chain reaction (RT-qPCR) has been used to quantify bacterial taxa in milk, However, concentrations often fall below the detection limit (Figure 2 & 3). Digital droplet PCR (ddPCR) allows detection of low-abundant …
Electrochemical Inactivation Of Tobacco Mosaic Virus: A Novel Vaccine Method, Angelica Diaz
Electrochemical Inactivation Of Tobacco Mosaic Virus: A Novel Vaccine Method, Angelica Diaz
Undergraduate Research Symposium Posters
We tested the effectiveness of using electrochemistry to irreversibly damage Tobacco Mosaic Virus (TMV). Hypothesis: By utilizing the acidic properties of DNA and RNA, viral genetic material can be irreversibly and selectively damaged using electrochemical methods. Technique could assist in development of highly targeted and effective vaccines.
Poliovirus Detection In Las Vegas Wastewater, Sage Boss, Hayley Baker, Ching-Lan Chang
Poliovirus Detection In Las Vegas Wastewater, Sage Boss, Hayley Baker, Ching-Lan Chang
Undergraduate Research Symposium Posters
Wastewater surveillance for poliovirus is a useful tool for spatial surveillance and evaluation of immunization efficacy. Polio testing in wastewater has been conducted since the 1980s in Finland and Israel, and the virus was recently discovered in New York. With increasing concern regarding the vaccination of children against the virus, there has been worry that polio cases could once again present themselves in the Las Vegas Valley. By testing for the virus in wastewater, we can monitor any new cases or outbreaks that occur and inform authorities as to the location and viral count. The wastewater samples were collected at …
Investigating The Growth Of Algae Under Low Atmospheric Pressures For Potential Food And Oxygen Production On Mars, Leena M. Cycil, Elisabeth M. Hausrath, Douglas W. Ming, Christopher T. Adcock, James Raymond, Daniel Remias, Warren P. Ruemmele
Investigating The Growth Of Algae Under Low Atmospheric Pressures For Potential Food And Oxygen Production On Mars, Leena M. Cycil, Elisabeth M. Hausrath, Douglas W. Ming, Christopher T. Adcock, James Raymond, Daniel Remias, Warren P. Ruemmele
Geoscience Faculty Research
With long-term missions to Mars and beyond that would not allow resupply, a self-sustaining Bioregenerative Life Support System (BLSS) is essential. Algae are promising candidates for BLSS due to their completely edible biomass, fast growth rates and ease of handling. Extremophilic algae such as snow algae and halophilic algae may also be especially suited for a BLSS because of their ability to grow under extreme conditions. However, as indicated from over 50 prior space studies examining algal growth, little is known about the growth of algae at close to Mars-relevant pressures. Here, we explored the potential for five algae species …
Plasticity In The Human Gut Microbiome Defies Evolutionary Constraints, Andres Gomez, Ashok Kumar Sharma, Elizabeth K. Mallott, Klara J. Petrzelkova, Carolyn A. Jost Robinson, Carl J. Yeoman, Franck Carbonero, Barbora Pafco, Jessica M. Rothman, Alexander Ulanov, Klara Vickova, Katherine R. Amato, Stephanie L. Schnorr, Nathaniel J. Dominy, David Modry, Angelique Todd, Manolito Torralba, Karen E. Nelson, Michael B. Burns, Ran Blekhman, Melissa Remis, Rebecca M. Stumpf, Brenda A. Wilson, H. Rex Gaskins, Paul A. Garber, Bryan A. White, Steven R. Leigh
Plasticity In The Human Gut Microbiome Defies Evolutionary Constraints, Andres Gomez, Ashok Kumar Sharma, Elizabeth K. Mallott, Klara J. Petrzelkova, Carolyn A. Jost Robinson, Carl J. Yeoman, Franck Carbonero, Barbora Pafco, Jessica M. Rothman, Alexander Ulanov, Klara Vickova, Katherine R. Amato, Stephanie L. Schnorr, Nathaniel J. Dominy, David Modry, Angelique Todd, Manolito Torralba, Karen E. Nelson, Michael B. Burns, Ran Blekhman, Melissa Remis, Rebecca M. Stumpf, Brenda A. Wilson, H. Rex Gaskins, Paul A. Garber, Bryan A. White, Steven R. Leigh
Anthropology Faculty Research
The gut microbiome of primates, including humans, is reported to closely follow host evolutionary history, with gut microbiome composition being specific to the genetic background of its primate host. However, the comparative models used to date have mainly included a limited set of closely related primates. To further understand the forces that shape the primate gut microbiome, with reference to human populations, we expanded the comparative analysis of variation among gut microbiome compositions and their primate hosts, including 9 different primate species and 4 human groups characterized by a diverse set of subsistence patterns (n = 448 samples). The results …
Author Correction: Fuctional Eubacteria Species Along With Transdomain Gut Inhabitants Favour Dysgenic Diversity In Oxalate Stone Disease, Mangesh V. Suryananshi, Shrikant S. Bhute, Rahul P. Gune, Yogesh S. Shouche
Author Correction: Fuctional Eubacteria Species Along With Transdomain Gut Inhabitants Favour Dysgenic Diversity In Oxalate Stone Disease, Mangesh V. Suryananshi, Shrikant S. Bhute, Rahul P. Gune, Yogesh S. Shouche
Life Sciences Faculty Research
This Article contains an error in the order of the Figures. Figures 2, 3 and 4 were published as Figures 4, 2, and 3 respectively. The correct Figures 2, 3 and 4 appear below as Figs 1, 2 and 3respectively. The Figure legends are correct.
Vancomycin Delays Clindamycin-Induced Fatality In The Hamster Model Of Clostridioides [Clostridium] Difficile Infection, Amelia E. Fox-King, Chrisabelle Mefferd, Jacqueline R. Phan, Nancy O. Nou, Ernesto Abel-Santos, Brian P. Hedlund
Vancomycin Delays Clindamycin-Induced Fatality In The Hamster Model Of Clostridioides [Clostridium] Difficile Infection, Amelia E. Fox-King, Chrisabelle Mefferd, Jacqueline R. Phan, Nancy O. Nou, Ernesto Abel-Santos, Brian P. Hedlund
LSAMP Poster Presentations
Antibiotics can leave the host gut microbiome susceptible to Clostridioides [Clostridium] difficile colonization and lethal toxin production. For instance, clindamycin-induced susceptibility to C. difficile infection (CDI) results in rapid fatality in hamster models, yet vancomycin has been shown to offer increased survival in hamsters challenged with C. difficile. We aim to develop an antibiotic treatment that will facilitate CDI susceptibility without prompt fatality in hamster models. An antibiotic regimen starting with a continuous vancomycin treatment along with a single clindamycin dosage is thought to reduce the major disruption in the indigenous gut microbiome and prevent clindamycin-induced death. …
Characterization Of The Omptin Protease, Ompt, In Escherichia Coli, Amanda Yates, Eun-Hae Kim, Helen Wing
Characterization Of The Omptin Protease, Ompt, In Escherichia Coli, Amanda Yates, Eun-Hae Kim, Helen Wing
Undergraduate Research Opportunities Program (UROP)
Omptins are outer membrane proteases found in gram negative bacteria that cause diseases in humans, such as pathogenic Escherichia coli, Shigella flexneri, Salmonella typhimurium, and Yersinia pestis. Bacterial species that express omptins cause diseases such as highly fatal plague and severe diarrhea and dysentery. The genes that encode these proteases are ompT, icsP, pgtE, and pla, respectively. These proteases are highly related in structure and share approximately 50% sequence identity. In S. flexneri, IcsP has been shown to cleave a key virulence determinant, IcsA (Egile et al., 1997). IcsA recruits host actin and allows for intracellular movement within host cells …
The Effects Of Host Physiological Conditions On The Expression Of Icsp In Shigella Flexneri, Karen Levy, Helen Wing
The Effects Of Host Physiological Conditions On The Expression Of Icsp In Shigella Flexneri, Karen Levy, Helen Wing
Undergraduate Research Opportunities Program (UROP)
Shigella flexneri is a gram-negative bacterium capable of causing diarrhea and dysentery known as shigellosis. It is estimated there are 167.4 million shigellosis episodes throughout the world each year causing 1.1 million deaths. Shigella invades cells in the lower intestine through an induced phagocytosis. Once in the cytoplasm, bacteria move from one cell to another using actin-based motility. The Shigella outer membrane protease IcsP regulates actin-based motility and cell-to-cell spread by cleaving the actin assembly protein IcsA from the bacterial cell surface. We hypothesize that IcsP may serve additional functions during infection. By examining which environmental signals trigger icsP expression, …
Stachybotrys: Is Nevada At Risk?, Terrylynn C. Foley
Stachybotrys: Is Nevada At Risk?, Terrylynn C. Foley
UNLV Theses, Dissertations, Professional Papers, and Capstones
Stachybotrys chartarum (atra) is a toxigenic fungus that is known to adversely impact the health of animals. Until recently, there have only been a few documented clinical reports linking Stachybotrys chartarum to human health effects. Scientists are increasingly convinced that Stachybotrys and its metabolites are responsible for several adverse health effects experienced by people all over the world, although conclusive proof has yet to be established. All the physical requirements needed for indoor Stachybotrys sporulation and growth is provided through water leaks (plumbing, roof or ceiling), flood events, nutrient sources (cellulose and nitrogen), pH, and temperature(23° - 28°C). Stachybotrys has …