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Full-Text Articles in Organisms

Characterizing The Cutaneous Microbiome Of Eurycea Lucifuga As A Potential Defense Against Chytridiomycosis, Madeline Key Dec 2022

Characterizing The Cutaneous Microbiome Of Eurycea Lucifuga As A Potential Defense Against Chytridiomycosis, Madeline Key

Senior Honors Theses

Chytridiomycosis is an emerging infectious disease that is significantly reducing global amphibian populations. The disease is caused by Batrachochytrium dendrobatidis (Bd), a fungus that lethally modifies amphibian skin. Recent research has suggested that the cutaneous microbiome of individual amphibians may play a role in susceptibility to the pathogen. In this study, twelve cave salamanders (Eurycea lucifuga) were collected. Cutaneous bacteria from each salamander were isolated and identified using Sanger Sequencing. Additionally, a Bd-challenge assay was performed to determine each isolate’s antifungal activity. Results indicated many microbial isolates possessed inhibitory capabilities against Bd, which may …


Frequency Of Bystander Exposure To Antibiotics For Enteropathogenic Bacteria Among Young Children In Low-Resource Settings, Elizabeth T. Rogawski Mcquade, Stephanie A. Brennhofer, Sarah E. Elwood, Timothy L. Mcmurry, Joseph A. Lewnard, Estomih R. Mduma, Sanjaya Shrestha, Najeeha Talat Iqbal, Pascal O. Bessong, Gagandeep Kang Sep 2022

Frequency Of Bystander Exposure To Antibiotics For Enteropathogenic Bacteria Among Young Children In Low-Resource Settings, Elizabeth T. Rogawski Mcquade, Stephanie A. Brennhofer, Sarah E. Elwood, Timothy L. Mcmurry, Joseph A. Lewnard, Estomih R. Mduma, Sanjaya Shrestha, Najeeha Talat Iqbal, Pascal O. Bessong, Gagandeep Kang

Department of Paediatrics and Child Health

Children in low-resource settings carry enteric pathogens asymptomatically and are frequently treated with antibiotics, resulting in opportunities for pathogens to be exposed to antibiotics when not the target of treatment (i.e., bystander exposure). We quantified the frequency of bystander antibiotic exposures for enteric pathogens and estimated associations with resistance among children in eight low-resource settings. We analyzed 15,697 antibiotic courses from 1,715 children aged 0 to 2 y from the MAL-ED birth cohort. We calculated the incidence of bystander exposures and attributed exposures to respiratory and diarrheal illnesses. We associated bystander exposure with phenotypic susceptibility of E. coli isolates in …


Behavioural Support And Nicotine Replacement Therapy For Smokeless Tobacco Cessation: Protocol For A Pilot Randomised-Controlled Multi-Country Trial, Faraz Siddiqui, Linda Bauld, Ray Croucher, Cath Jackson, Ian Kellar, Mona Kanaan, Subhash Pokhrel, Rumana Huque, Romaina Iqbal, Javaid Ahmed Khan Aug 2022

Behavioural Support And Nicotine Replacement Therapy For Smokeless Tobacco Cessation: Protocol For A Pilot Randomised-Controlled Multi-Country Trial, Faraz Siddiqui, Linda Bauld, Ray Croucher, Cath Jackson, Ian Kellar, Mona Kanaan, Subhash Pokhrel, Rumana Huque, Romaina Iqbal, Javaid Ahmed Khan

Community Health Sciences

Background: Smokeless tobacco (ST) is consumed globally by more than 350 million people, with approximately 85% of all users based in South and Southeast Asia. In this region, ST products are cheap and easily accessible. Evidence-based interventions to people quit ST use are lacking. This study aims to test the feasibility of conducting a future definitive trial of ST cessation, using a culturally adapted behavioural intervention, and/or nicotine replacement therapy (NRT) in three South Asian countries.
Methods: We will conduct a factorial design, randomised-controlled pilot trial in Bangladesh, India and Pakistan. Daily ST users will be recruited from primary health …


The Sars-Cov-2 Differential Genomic Adaptation In Response To Varying Uvindex Reveals Potential Genomic Resources For Better Covid-19 Diagnosis And Prevention, Naveed Iqbal, Muhammad Rafiq, Masooma Ali, Sanaullah Tareen, Maqsood Ahmad, Faheem Nawaz, Sumair Khan, Rida Riaz, Ting Yang, Ambrin Fatima Aug 2022

The Sars-Cov-2 Differential Genomic Adaptation In Response To Varying Uvindex Reveals Potential Genomic Resources For Better Covid-19 Diagnosis And Prevention, Naveed Iqbal, Muhammad Rafiq, Masooma Ali, Sanaullah Tareen, Maqsood Ahmad, Faheem Nawaz, Sumair Khan, Rida Riaz, Ting Yang, Ambrin Fatima

Department of Biological & Biomedical Sciences

Coronavirus disease 2019 (COVID-19) has been a pandemic disease reported in almost every country and causes life-threatening, severe respiratory symptoms. Recent studies showed that various environmental selection pressures challenge the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infectivity and, in response, the virus engenders new mutations, leading to the emergence of more virulent strains of WHO concern. Advance prediction of the forthcoming virulent SARS-CoV-2 strains in response to the principal environmental selection pressures like temperature and solar UV radiation is indispensable to overcome COVID-19. To discover the UV-solar radiation-driven genomic adaption of SARS-CoV-2, a curated dataset of 2,500 full-grade genomes from …


Microplastics In Freshly Fallen Snow: How May It Adversely Impact Human Health And Exacerbate The Covid-19 Crisis?, Ayesha Liaquat, Aleena Kashif, Sushma Rathi, Alishba Raza Aug 2022

Microplastics In Freshly Fallen Snow: How May It Adversely Impact Human Health And Exacerbate The Covid-19 Crisis?, Ayesha Liaquat, Aleena Kashif, Sushma Rathi, Alishba Raza

Medical College Documents

No abstract provided.


Resolving The Repression Pathway Of Virulence Gene Hila In Salmonella, Alexandra King, Lon Chubiz Phd, Brenda Pratte, Lauren Daugherty Jun 2022

Resolving The Repression Pathway Of Virulence Gene Hila In Salmonella, Alexandra King, Lon Chubiz Phd, Brenda Pratte, Lauren Daugherty

Undergraduate Research Symposium

Salmonella is a relatively abundant, virulent species of bacteria that is most known for spreading gastrointestinal diseases through food. These illnesses result in approximately 1.35 million infections, including over 25,000 hospitalizations each year, in the U.S. alone (CDC.gov). As antibiotic resistance becomes an increasingly urgent public health problem, the importance of developing alternative treatment methods is only becoming more crucial. One of the genes responsible for this virulence is known as hilA. HilA is the main transcriptional regulator of Salmonella Pathogenicity Island-1 gene (UniProt). SPI-1 plays an important role in the invasion of Salmonella into epithelial cells. The proteins encoded …


Predominantly Methicillin-Susceptible S. Aureus Bacteria Found In Csp Students’ S. Aureus Strains, Roma Ambo Apr 2022

Predominantly Methicillin-Susceptible S. Aureus Bacteria Found In Csp Students’ S. Aureus Strains, Roma Ambo

Research and Scholarship Symposium Posters

Positive Staphylococcus aureus strains from CSP students were tested for methicillin resistance (MRSA) using the Kirby-bauer assay. Kirby-bauer assay technique was used to determine the sensitivity of staphylococcus aureus bacteria against oxacillin. MRSA infection is the result of a bacteria that has built resistance against the antibiotics used to treat staph infections. The results of this experiment concludes that majority of the strains tested are methicillin-susceptible S. aureus (MSSA).


Distribution Of Serotypes And Antibiotic Resistance Of Invasive Pseudomonas Aeruginosa In A Multi-Country Collection, Shamima Nasrin, Nicolas Hegerle, Shaichi Sen, Joseph Nkeze, Sunil Sen, Jasnehta Permala-Booth, Myeongjin Choi, James Sinclair, Milagritos D. Tapia, Sadia Shakoor Jan 2022

Distribution Of Serotypes And Antibiotic Resistance Of Invasive Pseudomonas Aeruginosa In A Multi-Country Collection, Shamima Nasrin, Nicolas Hegerle, Shaichi Sen, Joseph Nkeze, Sunil Sen, Jasnehta Permala-Booth, Myeongjin Choi, James Sinclair, Milagritos D. Tapia, Sadia Shakoor

Department of Pathology and Laboratory Medicine

Background: Pseudomonas aeruginosa is an opportunistic pathogen that causes a wide range of acute and chronic infections and is frequently associated with healthcare-associated infections. Because of its ability to rapidly acquire resistance to antibiotics, P. aeruginosa infections are difficult to treat. Alternative strategies, such as a vaccine, are needed to prevent infections. We collected a total of 413 P. aeruginosa isolates from the blood and cerebrospinal fluid of patients from 10 countries located on 4 continents during 2005-2017 and characterized these isolates to inform vaccine development efforts. We determined the diversity and distribution of O antigen and flagellin types and …