Bacterial Infections and Mycoses Commons^™

From Tuberculosis Bedside To Bench: Ube2b Splicing As A Potential Biomarker And Its Regulatory Mechanism, Mengyuan Lyu, Jian Zhou, Yanbing Zhou, Weelic Chong, Wei Xu, Hongli Lai, Lu Niu, Yang Hai, Xiaojun Yao, Sheng Gong, Qinglan Wang, Yi Chen, Yili Wang, Liyu Chen, Ganzi People's Hospital, Jiongjiong Zeng, Chengdi Wang, Binwu Ying

Student Papers & Posters

Alternative splicing (AS) is an important approach for pathogens and hosts to remodel transcriptome. However, tuberculosis (TB)-related AS has not been sufficiently explored. Here we presented the first landscape of TB-related AS by long-read sequencing, and screened four AS events (S100A8-intron1-retention intron, RPS20-exon1-alternaitve promoter, KIF13B-exon4-skipping exon (SE) and UBE2B-exon7-SE) as potential biomarkers in an in-house cohort-1. The validations in an in-house cohort-2 (2274 samples) and public datasets (1557 samples) indicated that the latter three AS events are potential promising biomarkers for TB diagnosis, but not for TB progression and prognosis. The excellent performance of classifiers further underscored the diagnostic value …

Sulopenem For The Treatment Of Complicated And Uncomplicated Bacterial Urinary Tract Infection (Uti), Aiyi Chen, Thanh-Liem Vu, Daniel J. Yang, Landon Olsen

Annual Research Symposium

No abstract provided.

Evaluation Of Antifungal Efficacy In The Treatment Of Candida Auris Bloodstream Infections, Monique Busacay, Kaylee Putney, Rebecca Jayakumar

Annual Research Symposium

No abstract provided.

Clinical Effects Of Lactobacillus Reuteri Probiotic In The Treatment Of Chronic Periodontitis: A Systematic Review Of Randomized Controlled Trials, Josephine Ram, Shilpa Bhandi, Kamran H. Awan, Frank Licari, Shankargouda Patil

Annual Research Symposium

No abstract provided.

Performance Of A Sars-Cov-2 Rt-Pcr Assay With Non-Traditional Specimen Types, Subathra Marimuthu, Holly Aliesky, Heather Ness, Daniya Sheikh, Sathya Rashmit, Dawn Balcom, Leslie A. Wolf

The University of Louisville Journal of Respiratory Infections

During the first two years of the coronavirus disease 2019 (COVID-19) pandemic, nasopharyngeal (NP) specimens were the gold standard for clinical diagnostic testing. As information about the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causing the pandemic continued to be shared, it was clear that the virus could be detected in other specimen types during an active infection. The University of Louisville Infectious Diseases Laboratory accepted non-traditional specimen types, most without a paired, positive NP result, for research purposes only to support local epidemiology efforts. A real-time reverse transcription-polymerase chain reaction (RT-PCR) assay originally validated for NP specimens was used …

What? Now A Respiratory Syncytial Virus Epidemic, Aya Allam, Steven B Lippmann

The University of Louisville Journal of Respiratory Infections

No abstract provided.

Chlamydia Trachomatis Subverts Alpha-Actinins To Stabilize Its Inclusion, A. Haines, J. Wesolowski, F. Paumet

Department of Microbiology and Immunology Faculty Papers

Chlamydia trachomatis is the leading cause of sexually transmitted bacterial disease and a global health burden. As an obligate intracellular pathogen, Chlamydia has evolved many strategies to manipulate its host and establish its intracellular niche called the inclusion. C. trachomatis reorganizes the host actin cytoskeleton to form scaffolds around the inclusion and reinforce the growing inclusion membrane. To control the kinetics and formation of actin scaffolds, Chlamydia expresses the effector InaC/CT813, which activates the host GTPase RhoA. Here, we have discovered that InaC stabilizes actin scaffolds through the host actin cross-linking proteins α-actinins 1 and 4. We demonstrate that α-actinins …

Impact Of Enteropathogens On Faltering Growth In A Resource-Limited Setting, Furqan Kabir, Junaid Iqbal, Zehra Jamil, Najeeha Talat Iqbal, Fatima Aziz, Adil Kalam, Sahrish Muneer, Aneeta Hotwani, Sheraz Ahmed, Fayyaz Umrani, Sana Syed, Kamran Sadiq, Syed Asad Ali

Department of Paediatrics and Child Health

Introduction: Environmental enteropathy is an important contributor to childhood malnutrition in the developing world. Chronic exposure to fecal pathogens leads to alteration in intestinal structure and function, resulting in impaired gut immune function, malabsorption, and growth faltering leading to environmental enteropathy.
Methods: A community-based intervention study was carried out on children till 24 months of age in Matiari district, Pakistan. Blood and fecal specimens were collected from the enrolled children aged 3-6 and 9 months. A real-time PCR-based TaqMan array card (TAC) was used to detect enteropathogens.
Results: Giardia, Campylobacter spp., enteroaggregative Escherichia coli (EAEC), Enteropathogenic Escherichia coli (EPEC), …

Clinical Utility Of Neutrophil To Lymphocyte Ratio In Sickle Cell Disease With Vaso-Occlusive Crisis, Satish Maharaj, Simone Chang

Hematology/Oncology and Stem Cell Therapy

Background and objectives: The neutrophil-to-lymphocyte ratio represents a universally accessible value that correlates with inflammation and prognosis in several disease states; however, the role of this biomarker in sickle cell disease remains poorly explored. Hence, the objective of the present study was to determine its potential clinical utility in patients with sickle cell disease.

Patients: Herein, we retrospectively reviewed 143 patients with sickle cell disease who presented to the emergency department with fever and painful vaso-occlusive crisis.

Results: The examined cohort had a prevalence of 11% confirmed bacterial infection, with approximately two-thirds reporting the use of hydroxyurea. The neutrophil-to-lymphocyte ratio …

Does The Cdc Covid-19 Exposure Assessment Criteria For Healthcare Personnel Work In A Healthcare Setting In Pakistan?, Imran Hassan, Unab Khan, Shehreen Ali, Asif Hakim, Asad Ali

Department of Family Medicine

Objective: To evaluate the real-world performance of the CDC's "Interim US guidance for risk assessment and work restriction for healthcare personnel with exposure to COVID-19" at a private healthcare system in Pakistan.
Study design: Retrospective observational study.
Place and duration of study: The Aga khan University Hospital, Karachi, and its associated healthcare facilities in all four provinces of Pakistan, from February to September 2020.
Methodology: Healthcare personnel (HCPs) assessed and tested for exposures to COVID-19 were included in the study. An exposure category was assigned to each HCP presenting with exposure to COVID-19 based on the CDC criteria. Percentage positivity …

Sepsis Inservice And Video At An Urban Hospital In California, Angela T. Ho

Master's Projects and Capstones

The emergency department at an urban hospital in California was performing below institutional goals related to sepsis protocols over the past few months. This intervention was targeted at nurses and was composed of a PowerPoint in-service on compliance to SEP-1 protocols and follow-along video on using the correct sepsis order set and documentation in the electronic health record (EHR). Goals included increased compliance to the SEP-1 protocol and documentation, (2) reduced time between the onset of symptoms, recognition, and intervention, (3) decline in sepsis rates and mortality rates, and (4) lower cost of care. Data was collected from the EHR …

Alternative Precautionary Measures Yielding Lower C. Diff Infection Rates In Healthcare Facilities, Matthew Kramer

Symposium of Student Scholars

Background: An international healthcare concern is the persistent spread of Clostridium difficile, a Gram-positive spore forming bacterium that is responsible for the most common hospital-acquired infection, amongst patients.

Objective: A systematic review was performed to summarize evidence that the interventions utilized in healthcare facilities which indicate a patient’s precautionary status are insufficient, outdated, and commonly lead to infection in neighboring patient rooms. Databases such as PubMed, NCBI, Google Scholar, and APHA’s Medical Care were searched, covering the period from 2017-2022. Studies were included if their focus concentrated on C. diff and the precautionary measures taken by employees at healthcare …

Partial Outpatient Oral Antibiotic Treatment Of Infective Endocarditis Is Non-Inferior To Inpatient Intravenous Antibiotic Therapy, Nicholas J. Murphy

Clinical Research in Practice: The Journal of Team Hippocrates

A clinical decision report using:

Iversen K, Ihlemann N, Gill SU, et al. Partial Oral versus Intravenous Antibiotic Treatment of Endocarditis. N Engl J Med. 2019; 380:415-424. https://doi.org/10.1056/NEJMoa1808312

for a patient with infective endocarditis and intravenous drug use with desire to leave the hospital.

A Cloning-Free Recyclable System For Crispr-Cas9 Mediated Mutant And Reversion Construction In Candida Albicans Clinical Isolates, Amanda K. Vogel

Theses and Dissertations (ETD)

Candida albicans is a ubiquitous opportunistic fungal pathogen and one of the most prevalent causes of fungal diseases worldwide. The reference isolate SC5314 is one of the most widely used strains for both experimental and genetic studies, but it is becoming increasingly evident that genetic diversity in clinical isolates plays an important role in antifungal resistance, virulence, and pathogenicity. These recent discoveries highlight the need for genetic tools that are capable of investigating genes in multiple strain backgrounds. Here we build on the SAT1-flipper method and combine it with CRISPR-Cas9 technology to achieve cloning-free homozygous deletion in a single transformation …

Computer-Aided Drug Discovery For Helicobacter Pylori, Nicole Ann Vita

Theses and Dissertations (ETD)

Helicobacter pylori is a high-priority drug-resistant pathogen and is currently the only bacteria considered to be a class I carcinogen and there is a critical need to identify novel chemical matter to treat H. pylori infections. Hp is responsible for greater than 60% of gastric cancer related deaths and 89% of all gastric cancer morbidities. In a previous study, our lab identified novel Hp thienopyrmidine inhibitors that target respiratory complex I, an essential enzyme in respiration. Respiratory complex I is a large asymmetric multidomain and membrane bound enzyme and due to these innate features, it is not practical for biophysical …

Highly Adherent Antimicrobial Coatings For Orthopedic Implants, Mikhail Bredikhin

All Dissertations

Fracture-related infections (FRIs) are the most devasting sort of complications associated with fracture fixation devices, as they lead to patients’ morbidity, prolonged hospitalization, amputations, and even death.External fixators additionally suffer from pin site infections (PSIs), which initiate at the skin entry points of the skin-metallic pin interface present in the external fixation of the damaged bones, often causing deep tissue infection and osteomyelitis. Small percutaneous pins, commonly known as Kirschner wires (K-wires), are used to treat complex fractures and deformities.They are drilled inside the diseased bone for the healing period and are left protruding outside the skin for fixation adjustments …

Drug-Resistant Bacterial Infections: We Need Urgent Action And Investment That Focus On The Weakest Link, Christiane Dolecek, Sadia Shakoor, Buddha Basnyat, Tochi Okwor, Benn Sartorius

Department of Pathology and Laboratory Medicine

Despite high mortality and morbidity, drug-resistant bacterial infections remain the forgotten pandemic. We argue for strengthening of diagnostics, WASH (water, sanitation, and hygiene) and infection prevention and control to reduce drug-resistant infections, as an integral part of sustainable high-quality health services, particularly in low- and middle-income countries.

Screening For Social Determinants Of Health To Improve Care In Pediatric Patients With Recurrent Urinary Tract Infections: A Scoping Review, Emily Gray Msn, Fnp-C, Michelle Rickard Dnp, Cpnp-Ac

Doctor of Nursing Practice Projects

Purpose: To describe what is known about how SDoH screening impacts adherence to treatment in pediatric patients with recurrent UTIs.

Exploring Stakeholders' Experiences And Perceptions Regarding Barriers To Effective Surveillance Of Communicable Diseases In A Rural District Of Pakistan: A Qualitative Study, Imran Naeem Abbasi, Sameen Siddiqi, Mmna Rehana Sididiqui, Rumina Hasan

Community Health Sciences

Objective: To explore the experiences and perceptions of health system stakeholders of a rural district of Sindh, Pakistan regarding the barriers to effective surveillance of communicable diseases.
Design: This qualitative descriptive exploratory design comprised in-depth interviews. Both inductive and deductive thematic analysis was applied to identify key themes from the data.
Settings: The study was conducted in public sector healthcare facilities and the district health office of the rural district of Thatta, in Sindh province, Pakistan.
Participants: Fifteen healthcare managers and healthcare providers working in the eight public sector primary and secondary healthcare facilities were interviewed using an open-ended in-depth …

Follow-Up Blood Cultures In Gram-Negative Bacteremia: How Do They Impact Outcomes?, Azza Elamin, Faisal Khan, Rajasekhar Jagarlamudi

Journal of Community Hospital Internal Medicine Perspectives

Introduction: Several studies have questioned the utility of obtaining follow-up blood cultures in Gram-negative bacteremia, but the impact of this practice on clinical outcomes is not fully understood. Methods: A retrospective cohort study of adult patients admitted with Gram-negative bacteremia over a two year period, to compare outcomes in those with and without follow-up blood cultures obtained. Data collected included demographics, comorbidities and presumed source of bacteremia. White blood cell count and presence of fever or hemodynamic compromise on the day of follow-up blood culture were recorded. The primary objective was to compare 30-day mortality between the two groups. Secondary …