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Articles 1651 - 1680 of 2140

Full-Text Articles in Biological Phenomena, Cell Phenomena, and Immunity

Lack Of Cd8+ T-Cell Co-Localization With Kaposi’S Sarcoma- Associated Herpesvirus Infected Cells In Kaposi’S Sarcoma Tumors, Salum J. Lidenge, For Yue Tso, Owen Ngalamika, Jaydeep Kolape, John R. Ngowi, Julius Mwaiselage, Charles Wood, John T. West Jan 2020

Lack Of Cd8+ T-Cell Co-Localization With Kaposi’S Sarcoma- Associated Herpesvirus Infected Cells In Kaposi’S Sarcoma Tumors, Salum J. Lidenge, For Yue Tso, Owen Ngalamika, Jaydeep Kolape, John R. Ngowi, Julius Mwaiselage, Charles Wood, John T. West

Nebraska Center for Virology: Faculty Publications

Despite the close association between Kaposi’s sarcoma (KS) and immune dysfunction, it remains unclear whether tumor infiltrating immune cells (TIIC), by their absence, presence, or dysfunction, are mechanistically correlated with KS pathogenesis. Therefore, their potential capacity to serve as prognostic biomarkers of KS disease progression or control is unclear. Because epidemic-KS (EpKS) occurs with HIV-1 co-infection, it is particularly important to compare TIIC between EpKS and HIV-negative African endemic-KS (EnKS) to dissect the roles of HIV-1 and Kaposi Sarcoma-associated herpesvirus (KSHV) in KS pathogenesis. This cross-sectional study of 13 advanced KS (4 EnKS, 9 EpKS) patients and 3 healthy controls …


Prevalence Of Kaposi's Sarcoma-Associated Herpesvirus And Transfusion-Transmissible Infections In Tanzanian Blood Donors, Salum J. Lidenge, Tara Tran, For Yue Tso, John R. Ngowi, Danielle M. Shea, Julius Mwaiselage, Charles Wood, John T. West Jan 2020

Prevalence Of Kaposi's Sarcoma-Associated Herpesvirus And Transfusion-Transmissible Infections In Tanzanian Blood Donors, Salum J. Lidenge, Tara Tran, For Yue Tso, John R. Ngowi, Danielle M. Shea, Julius Mwaiselage, Charles Wood, John T. West

Nebraska Center for Virology: Faculty Publications

Objective: Kaposi's sarcoma-associated herpesvirus (KSHV) is the causative agent for Kaposi's sarcoma (KS), one of the most common cancers in Tanzania. We have investigated KSHV prevalence and factors associated with KSHV infection in Tanzania.

Methods: This is a cross-sectional study of voluntary blood-donors from Dar es Salaam, Tanzania. Plasma was screened for KSHV, HIV-1, HBV, HCV and Treponema pallidum (syphilis). Associations between KSHV sero-status and risk factors were analyzed. Odds ratios (OR) and 95% confidence intervals (CI) are reported to evaluate risk factors of KSHV infection. All tests were 2-tailed, and P-values <0.05 were considered statistically significant.

Results: The overall KSHV seroprevalence was 56.9%. Significantly …


Incidence Of The Covid-19 In Iraq – Implications For Travellers, Maysaa Kadhim Al-Malkey, Maitham Ahmed Al-Sammak Jan 2020

Incidence Of The Covid-19 In Iraq – Implications For Travellers, Maysaa Kadhim Al-Malkey, Maitham Ahmed Al-Sammak

Nebraska Center for Virology: Faculty Publications

The first emerged Coronavirus Disease 2019 (COVID-19) was in Wuhan, Hubei Province, China at the end of 2019, then spread to the rest of China [1], followed by the spread of the COVID-19 epidemics into the world caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) [2]. Many epidemiological assessments in different countries from Asia, Europe, and North America have been published [3]. Nevertheless, there are countries in the Middle East like Iraq, with a rapid increase in cases and a high number of deaths, with a lack of studies. It is worth noting that the Iraqi Foreign Ministry was …


Epstein Barr Virus-Immortalizedblymphocytes Exacerbate Experimental Autoimmune Encephalomyelitis In Xenograft Mice, Pascal Polepole, Alison Bartenslager, Yutong Liu, Thomas M. Petro, Samodha C. Fernando, Luwen Zhang Jan 2020

Epstein Barr Virus-Immortalizedblymphocytes Exacerbate Experimental Autoimmune Encephalomyelitis In Xenograft Mice, Pascal Polepole, Alison Bartenslager, Yutong Liu, Thomas M. Petro, Samodha C. Fernando, Luwen Zhang

Nebraska Center for Virology: Faculty Publications

Multiple sclerosis (MS) is the most common autoimmune disorder affecting the central nervous system. Epstein-Barr virus (EBV) is a causative agent for infectious mononucleosis (IM) that is associated with MS pathogenesis. However, the exact mechanism by which EBV, specifically in IM, increases the risk for MS remains unknown. EBV immortalizes primary B lymphocytes in vitro and causes excessive B lymphocyte proliferation in IM in vivo. In asymptomatic carriers, EBV-infected B lymphocytes still proliferate to certain degrees, the process of which is tightly controlled by the host immune systems. Experimental autoimmune encephalomyelitis (EAE) mimics key features of MS in humans and …


Cervico-Vaginal Inflammatory Cytokine And Chemokine Responses To Two Different Siv Immunogens, Nikki P.L. Toledo, Hongzhao Li, Robert W. Omange, Tamara G. Dacoba, Jose Crecente-Campo, Dane Schalk, Mohammad A. Kashem, Eva Rakasz, Nancy Schultz-Darken, Qingsheng Li, James B. Whitney, Maria J. Alonso, Francis A. Plummer, Ma Luo Jan 2020

Cervico-Vaginal Inflammatory Cytokine And Chemokine Responses To Two Different Siv Immunogens, Nikki P.L. Toledo, Hongzhao Li, Robert W. Omange, Tamara G. Dacoba, Jose Crecente-Campo, Dane Schalk, Mohammad A. Kashem, Eva Rakasz, Nancy Schultz-Darken, Qingsheng Li, James B. Whitney, Maria J. Alonso, Francis A. Plummer, Ma Luo

Nebraska Center for Virology: Faculty Publications

Studies have shown that vaccine vectors and route of immunization can differentially activate different arms of the immune system. However, the effects of different HIV vaccine immunogens on mucosal inflammation have not yet been studied. Because mucosal sites are the primary route of HIV infection, we evaluated the cervico-vaginal inflammatory cytokine and chemokine levels of Mauritian cynomolgus macaques following immunization and boost using two different SIV vaccine immunogens. The PCS vaccine delivers 12 20-amino acid peptides overlapping the 12 protease cleavage sites, and the Gag/Env vaccine delivers the full Gag and full Env proteins of simian immunodeficiency virus. We showed …


Genetic Diversity Of Potassium Ion Channel Proteins Encoded By Chloroviruses That Infect Chlorella Heliozoae, Carter Murry, Irina V. Agarkova, Jayadri S. Ghosh, Fiona C. Fitzgerald, Roger M. Carlson, Brigitte Hertel, Kerri Kukovetz, Oliver Rauh, Gerhard Thiel, James L. Van Etten Jan 2020

Genetic Diversity Of Potassium Ion Channel Proteins Encoded By Chloroviruses That Infect Chlorella Heliozoae, Carter Murry, Irina V. Agarkova, Jayadri S. Ghosh, Fiona C. Fitzgerald, Roger M. Carlson, Brigitte Hertel, Kerri Kukovetz, Oliver Rauh, Gerhard Thiel, James L. Van Etten

Nebraska Center for Virology: Faculty Publications

Chloroviruses are large, plaque-forming, dsDNA viruses that infect chlorella-like green algae that live in a symbiotic relationship with protists. Chloroviruses have genomes from 290 to 370 kb, and they encode as many as 400 proteins. One interesting feature of chloroviruses is that they encode a potassium ion (K+) channel protein named Kcv. The Kcv protein encoded by SAG chlorovirus ATCV-1 is one of the smallest known functional K+ channel proteins consisting of 82 amino acids. The KcvATCV-1 protein has similarities to the family of two transmembrane domain K+ channel proteins; it consists of two transmembrane -helixes with a pore region …


Viral And Immunological Analytes Are Poor Predictors Of The Clinical Treatment Response In Kaposi’S Sarcoma Patients, Salum J. Lidenge, For Yue Tso, Yasaman Mortazavi, John R. Ngowi, Danielle M. Shea, Julius Mwaiselage, Charles Wood, John T. West Jan 2020

Viral And Immunological Analytes Are Poor Predictors Of The Clinical Treatment Response In Kaposi’S Sarcoma Patients, Salum J. Lidenge, For Yue Tso, Yasaman Mortazavi, John R. Ngowi, Danielle M. Shea, Julius Mwaiselage, Charles Wood, John T. West

Nebraska Center for Virology: Faculty Publications

Kaposi’s sarcoma-associated herpes virus (KSHV) is the etiologic agent for Kaposi’s sarcoma (KS). The prognostic utility of KSHV and HIV-1 (human immunodeficiency virus) viremia as well as immunological parameters in clinical management of participants with KS is unclear. The objective of this study was to investigate viral and immunological parameters as predictors of KS treatment responses in participants with KS from sub-Saharan Africa (SSA). Plasma KSHV-DNA, HIV-1 viral load, total anti-KSHV antibody, KSHV-neutralizing antibody (nAb), cytokine/chemokine levels, and T-cell differentiation subsets were quantified before and after KS treatment in 13 participants with KS and in 13 KSHV-infected asymptomatic control individuals. …


A Decade In Review: A Systematic Review Of Universal Influenza Vaccines In Clinical Trials During The 2010 Decade, Brigette N. Corder, Brianna L. Bullard, Gregory Poland, Eric A. Weaver Jan 2020

A Decade In Review: A Systematic Review Of Universal Influenza Vaccines In Clinical Trials During The 2010 Decade, Brigette N. Corder, Brianna L. Bullard, Gregory Poland, Eric A. Weaver

Nebraska Center for Virology: Faculty Publications

On average, there are 3–5 million severe cases of influenza virus infections globally each year. Seasonal influenza vaccines provide limited protection against divergent influenza strains. Therefore, the development of a universal influenza vaccine is a top priority for the NIH. Here, we report a comprehensive summary of all universal influenza vaccines that were tested in clinical trials during the 2010–2019 decade. Of the 1597 studies found, 69 eligible clinical trials, which investigated 27 vaccines, were included in this review. Information from each trial was compiled for vaccine target, vaccine platform, adjuvant inclusion, clinical trial phase, and results. As we look …


Non-Naturally Occurring Porcine Reproduction And Respiratory Syndrome Virus (Prrsv) And Methods Of Using, Hiep Lai Xuan Vu, Fernando Osorio, William W. Laegreid, Asit K. Pattnaik, Fangrui Ma Jan 2020

Non-Naturally Occurring Porcine Reproduction And Respiratory Syndrome Virus (Prrsv) And Methods Of Using, Hiep Lai Xuan Vu, Fernando Osorio, William W. Laegreid, Asit K. Pattnaik, Fangrui Ma

Nebraska Center for Virology: Faculty Publications

A non-naturally occuring porcine reproductive and respiratory syndrome virus (PRRSV) is provided herein, and methods of making and using the non-naturally occurring PRRSV also are provided.


Recommendations For Measuring Hiv Reservoir Size In Cure- Directed Clinical Trials., Luis J. Montaner, Qingsheng Li Jan 2020

Recommendations For Measuring Hiv Reservoir Size In Cure- Directed Clinical Trials., Luis J. Montaner, Qingsheng Li

Nebraska Center for Virology: Faculty Publications

Therapeutic strategies are being clinically tested either to eradicate the latent HIV reservoir or to achieve virologic control in the absence of antiretroviral therapy (ART). Attaining this goal will require a consensus on how best to measure the levels of persistently-infected cells with the potential to cause viral rebound upon ART cessation to assess the results of cure-directed strategies in vivo. Current measurements assess different aspects of the HIV provirus and its functionality, and produce divergent results. Here, we provide the collective insight and position from the BEAT-HIV Martin Delaney Collaboratory on which viral measurements to prioritize in HIV cure-directed …


Diversity Of Trna Clusters In The Chloroviruses, Garry A. Duncan, David D. Dunigan Ph. D., James L. Van Etten Jan 2020

Diversity Of Trna Clusters In The Chloroviruses, Garry A. Duncan, David D. Dunigan Ph. D., James L. Van Etten

Nebraska Center for Virology: Faculty Publications

Viruses rely on their host’s translation machinery for the synthesis of their own proteins. Problems belie viral translation when the host has a codon usage bias (CUB) that is different from an infecting virus due to differences in the GC content between the host and virus genomes. Here, we examine the hypothesis that chloroviruses adapted to host CUB by acquisition and selection of tRNAs that at least partially favor their own CUB. The genomes of 41 chloroviruses comprising three clades, each infecting a different algal host, have been sequenced, assembled and annotated. All 41 viruses not only encode tRNAs, but …


The Effect Of The Senolytic Abt-263 On Androgen Deprivation-Induced Senescent Prostate Tumor Cells, So Min Lee Jan 2020

The Effect Of The Senolytic Abt-263 On Androgen Deprivation-Induced Senescent Prostate Tumor Cells, So Min Lee

Theses and Dissertations

Prostate cancer (PCa) is one of the leading causes of cancer-related deaths in men. Although standard treatments such as androgen deprivation therapies (ADT) and antiandrogens have increased survival for many patients, most men placed on these therapies will develop castration-resistant disease (CRPC). Previous studies have shown that these treatments have limited cytotoxicity and instead promote cell growth arrest. Our current work demonstrates that prostate tumor cells grown in the absence of androgens by using charcoal-stripped serum undergo senescence-mediated or senescent-like growth arrest, based on the cellular expression of senescence-associated-beta-galactosidase (SA-β-Gal). Our studies further suggest that this senescence is transient and …


The Role Of Interleukin-18 In Myocardial Ischemia/Reperfusion, Yogesh Dhakal Jan 2020

The Role Of Interleukin-18 In Myocardial Ischemia/Reperfusion, Yogesh Dhakal

Theses and Dissertations

Acute Myocardial Infarction (AMI) is one of the leading causes of morbidity for cardiovascular diseases (CVDs) in the western world. While mortality rates for AMI has reduced in the last 20 years due to advancements in clinical interventions, patients who have an AMI are significantly more likely to develop heart failure (HF) in the following years. Reperfusion of the ischemic tissue is a necessary procedure to restore blood delivery to cardiomyocytes, minimize myocardial dysfunction, and reduce infarct size. Still, the step of reperfusion itself induces myocardial damage in a phenomenon known as reperfusion injury. Considering that the degree of myocardial …


A Chronic Strain Of The Cystic Fibrosis Pathogen Pandoraeapulmonicola Expresses A Heterogenous Hypo-Acylated Lipid A, Molly D. Pither, Siobhan Mcclean, Alba Silipo, Antonio Molinaro, Flaviana Di Lorenzo Jan 2020

A Chronic Strain Of The Cystic Fibrosis Pathogen Pandoraeapulmonicola Expresses A Heterogenous Hypo-Acylated Lipid A, Molly D. Pither, Siobhan Mcclean, Alba Silipo, Antonio Molinaro, Flaviana Di Lorenzo

Articles

Pandoraeasp. is an emerging Gram-negative pathogen in cystic fibrosis causing severe and persistent inflammation and damageof the lungs. The molecular mechanisms underlying the high pathogenicity ofPandoraeaspecies are still largely unknown. AsGram-negatives,Pandoraeasp. express lipopolysaccharides (LPS) whose recognition by the host immune system triggers aninflammatory response aimed at the bacterial eradication from the infected tissues. The degree of the inflammatory responsestrongly relies on the fine structure of the LPS and, in particular, of its glycolipid moiety, i.e. the lipid A. Here we report thestructure of the lipid A isolated from the LPS of a chronic strain ofP. pulmonicola(RL 8228), one of the …


A Short Remark On Multipurpose Laser Therapy “Helios” In Ukraine And Its Potential Application For Treatment Of Neurology Disorders, Florentin Smarandache, Volodymyr Krasnoholovets, Victor Christianto, Rizha Vitania, The Houw Liong Jan 2020

A Short Remark On Multipurpose Laser Therapy “Helios” In Ukraine And Its Potential Application For Treatment Of Neurology Disorders, Florentin Smarandache, Volodymyr Krasnoholovets, Victor Christianto, Rizha Vitania, The Houw Liong

Branch Mathematics and Statistics Faculty and Staff Publications

However, a truly multipurpose laser therapy method is very rarely available. Here we introduce a multipurpose laser therapy device in Ukraine, which is capable to take care a multitude of diseases. It is called “Helios”, by one of us (VK). We also give a case where a patient who suffered from Covid-19 has been treated successfully until he is recovered to healthy condition. In the last section we also discuss potential future application of Helios for other fields; i.e. neurology disorders.


Hiv-1 Subtypes And Drug Resistance Mutations Among Female Sex Workers Varied In Different Cities And Regions Of The Democratic Republic Of Congo, Eun Hee Kwon, Godefroid M. A. Musema, Jessica Boelter, Sydney Townsend, Desire Tshala-Katumbay, Patrick K. Kayembe, John T. West, Charles Wood Jan 2020

Hiv-1 Subtypes And Drug Resistance Mutations Among Female Sex Workers Varied In Different Cities And Regions Of The Democratic Republic Of Congo, Eun Hee Kwon, Godefroid M. A. Musema, Jessica Boelter, Sydney Townsend, Desire Tshala-Katumbay, Patrick K. Kayembe, John T. West, Charles Wood

Nebraska Center for Virology: Faculty Publications

Background Complex mosaic structures of HIV-1 were found in the Democratic Republic of Congo (DRC). Currently, there is limited information on the circulating HIV-1 strains, the distribution of these strains and antiretroviral (ART) resistant viruses in different regions of the country, and the HIV-1 strains harbored by the high-risk groups like female sex workers (FSW) reported to be the source of recombinant and ART resistant viruses.

Methods Dried Blood Spots (DBS), collected from 325 infected FSWs in ten cities from 2012 DRC HIV/STI Integrated Biological and Behavioral Surveillance Survey, were tested for HIV-1 genotypes and antiretroviral resistance mutations. Regional segregation …


Host Transcriptional Response To Persistent Infection With A Live-Attenuated Porcine Reproductive And Respiratory Syndrome Virus Strain, Jayeshbhai Chaudhari, Chia-Sin Liew, Aspen M. Workman, Jean-Jack Riethoven, David J. Steffen, Sarah Vitosh-Sillman, Hiep Vu Jan 2020

Host Transcriptional Response To Persistent Infection With A Live-Attenuated Porcine Reproductive And Respiratory Syndrome Virus Strain, Jayeshbhai Chaudhari, Chia-Sin Liew, Aspen M. Workman, Jean-Jack Riethoven, David J. Steffen, Sarah Vitosh-Sillman, Hiep Vu

Nebraska Center for Virology: Faculty Publications

Both virulent and live-attenuated porcine reproductive and respiratory syndrome virus (PRRSV) strains can establish persistent infection in lymphoid tissues of pigs. To investigate the mechanisms of PRRSV persistence, we performed a transcriptional analysis of inguinal lymphoid tissue collected from pigs experimentally infected with an attenuated PRRSV strain at 46 days post infection. A total of 6404 differentially expressed genes (DEGs) were detected of which 3960 DEGs were upregulated and 2444 DEGs were downregulated. Specifically, genes involved in innate immune responses and chemokines and receptors associated with T-cell homing to lymphoid tissues were down regulated. As a result, homing of virus-specific …


Species D Adenoviruses As Oncolytic Viral Vectors, Brianna L. Bullard, Brigette N. Corder, Eric A. Weaver Jan 2020

Species D Adenoviruses As Oncolytic Viral Vectors, Brianna L. Bullard, Brigette N. Corder, Eric A. Weaver

Nebraska Center for Virology: Faculty Publications

Oncolytic adenoviruses (Ad) have shown promising results in the therapeutic treatment of cancer. Ad type 5 (Ad5) is the most extensively utilized Ad type. However, several limitations exist to using Ad5 as an oncolytic virus, including high levels of anti-Ad5 neutralizing antibodies in the population, binding of the Ad5 hexon to blood coagulation factor X leading to liver sequestration and toxicity, and reduced expression of the primary receptor CAR on many tumors. Here, we use in vitro methods to explore the oncolytic potential of four alternative Ad types (Ad26, 28, 45, and 48) belonging to the species D Ad subgroup …


Determining The Role Of Satellite Cells During Skeletal Muscle Adaptation, Davis A. Englund Jan 2020

Determining The Role Of Satellite Cells During Skeletal Muscle Adaptation, Davis A. Englund

Theses and Dissertations--Rehabilitation Sciences

Physical inactivity, advancing age, limb immobilization, degenerative diseases and various systemic diseases (many cancers, sepsis, HIV, COPD, kidney disease) all lead to skeletal muscle wasting. The loss of muscle mass is of major clinical importance because it leads to an increased risk for morbidity, disability, and the loss of independence; collectively contributing to a substantive increase in healthcare utilization and cost. The prevalence of cachexia (disease-induced muscle wasting) can reach as high as 80% in certain patient populations and the average cost per hospital stay is $4,641 more than in non-cachectic patients. Direct healthcare costs attributable to sarcopenia were estimated …


The Antibacterial And Anti-Biofilm Activity Of Metal Complexes Incorporating 3,6,9- Trioxaundecanedioate And 1,10-Phenanthroline Ligands In Clinical Isolates Of Pseudomonas Aeruginosa From Irish Cystic Fibrosis Patients, Megan O'Shaughnessy, Pauraic Mccarron, Livia Viganor, Malachy Mccann, Michael Devereux, Orla L. Howe Jan 2020

The Antibacterial And Anti-Biofilm Activity Of Metal Complexes Incorporating 3,6,9- Trioxaundecanedioate And 1,10-Phenanthroline Ligands In Clinical Isolates Of Pseudomonas Aeruginosa From Irish Cystic Fibrosis Patients, Megan O'Shaughnessy, Pauraic Mccarron, Livia Viganor, Malachy Mccann, Michael Devereux, Orla L. Howe

Articles

Chronic infections of Pseudomonas aeruginosa in the lungs of cystic fibrosis (CF) patients are problematic in Ireland where inherited CF is prevalent. The bacteria's capacity to form a biofilm in its pathogenesis is highly virulent and leads to decreased susceptibility to most antibiotic treatments. Herein, we present the activity profiles of the Cu(II), Mn(II) and Ag(I) tdda-phen chelate complexes {[Cu(3,6,9-tdda)(phen)2].3H2O.EtOH}n (Cu-tdda-phen), {[Mn(3,6,9-tdda)(phen)2].3H2O.EtOH}n (Mn-tdda-phen) and [Ag2(3,6,9-tdda)(phen)4].EtOH (Ag-tdda-phen) (tddaH2 = 3,6,9-trioxaundecanedioic acid; phen = 1,10-phenanthroline) towards clinical isolates of P. aeruginosa derived from Irish CF patients in comparison to two reference laboratory strains (ATCC 27853 and PAO1). The effects of the metal-tdda-phen …


Oral Contraceptives As Possible Acl Injury Prevention Method, Haley Schweizer Jan 2020

Oral Contraceptives As Possible Acl Injury Prevention Method, Haley Schweizer

Capstone Showcase

ABSTRACT

Introduction: Anterior Cruciate Ligament (ACL) injuries are an upsetting setback for many athletes that require a long and costly recovery process. The injury rates are four times greater in women than men. Preventative measures that help to prevent ACL injuries are limited to stretching and strengthening. Therefore, this review aims to investigate if oral contraceptive [I] usage provides a possible new avenue for prevention of ACL injury [O] in young female athletes (ages 18-30) [P] compared to those that do not take oral contraceptives [C].

Methods: A literature review was performed though PubMed, Google Scholar, SCOPUS Database, and ClinicalKey …


Assessing Morphology Of Iprgcs After Traumatic Brain Injury, Brian Foresi, Matt Smith Jan 2020

Assessing Morphology Of Iprgcs After Traumatic Brain Injury, Brian Foresi, Matt Smith

Williams Honors College, Honors Research Projects

ipRGCs are retinal ganglion cells that project to visual processing centers of the brain for nonimage forming visual functions. The relation of ipRGCs to tramatic brain injury (TBI) is emerging as data has been published describing ipRGC functional changes in TBI affected military veterans. Major symptomologies of concussions, a mild form of TBI, also overlap with the function governed by sites in the brain with major ipRGC projection percentages. Assesing if a morphological change is occuring in the ipRGCs after a TBI could support the idea of a pathological mechanism of the injury. This study could also indicate further relevance …


Pediatric Immunization Practices In Nephrotic Syndrome: An Assessment Of Provider And Parental Knowledge, Cheryl L Tran, David T Selewski, Gia J Oh, Jonathan P Troost, Susan F Massengill, Samhar I Al-Akash, Shefali Mahesh, Rasheda Amin, Isa F Ashoor, Rahul Chanchlani, Mahmoud Kallash, Robert P Woroniecki, Debbie S Gipson Jan 2020

Pediatric Immunization Practices In Nephrotic Syndrome: An Assessment Of Provider And Parental Knowledge, Cheryl L Tran, David T Selewski, Gia J Oh, Jonathan P Troost, Susan F Massengill, Samhar I Al-Akash, Shefali Mahesh, Rasheda Amin, Isa F Ashoor, Rahul Chanchlani, Mahmoud Kallash, Robert P Woroniecki, Debbie S Gipson

Faculty, Staff and Student Publications

Background: Children with nephrotic syndrome (NS) are at high risk for vaccine-preventable infections due to the immunological effects from the disease and concurrent treatment with immunosuppressive medications. Immunizations in these patients may be deferred due to their immunosuppressive treatment which may increase the risk for vaccine-preventable infections. Immunization practices in children with NS continue to vary among pediatric nephrologists. This raises the question of whether children with NS are receiving the recommended vaccinations at appropriate times. Therefore, it is critical to understand the practices and patient education provided by physicians to patients on the topic of vaccinations.

Methods: After informed …


Perioperative Acute Kidney Injury, Sam D Gumbert, Felix Kork, Maisie L Jackson, Naveen Vanga, Semhar J Ghebremichael, Christy Y Wang, Holger K Eltzschig Jan 2020

Perioperative Acute Kidney Injury, Sam D Gumbert, Felix Kork, Maisie L Jackson, Naveen Vanga, Semhar J Ghebremichael, Christy Y Wang, Holger K Eltzschig

Faculty, Staff and Students Publications

Perioperative organ injury is among the leading causes of morbidity and mortality of surgical patients. Among different types of perioperative organ injury, acute kidney injury occurs particularly frequently and has an exceptionally detrimental effect on surgical outcomes. Currently, acute kidney injury is most commonly diagnosed by assessing increases in serum creatinine concentration or decreased urine output. Recently, novel biomarkers have become a focus of translational research for improving timely detection and prognosis for acute kidney injury. However, specificity and timing of biomarker release continue to present challenges to their integration into existing diagnostic regimens. Despite many clinical trials using various …


Chloroviruses, James L. Van Etten, Irina V. Agarkova, David D. Dunigan Dec 2019

Chloroviruses, James L. Van Etten, Irina V. Agarkova, David D. Dunigan

Nebraska Center for Virology: Faculty Publications

Chloroviruses are large dsDNA, plaque-forming viruses that infect certain chlorella-like green algae; the algae are normally mutualistic endosymbionts of protists and metazoans and are often referred to as zoochlorellae. The viruses are ubiquitous in inland aqueous environments throughout the world and occasionally single types reach titers of thousands of plaque-forming units per ml of native water. The viruses are icosahedral in shape with a spike structure located at one of the vertices. They contain an internal membrane that is required for infectivity. The viral genomes are 290 to 370 kb in size, which encode up to 16 tRNAs and 330 …


Electrochemical Hydrogen Evolution Over Hydrothermally Synthesized Re-Doped Mos2 Flower-Like Microspheres, Juan Aliaga, Pablo Vera, Juan Araya, Luis Ballesteros, Julio Urzúa, Mario Farías, Francisco Paraguay-Delgado, Gabriel Alonso-Núñez, Guillermo González, Eglantina Benavente Dec 2019

Electrochemical Hydrogen Evolution Over Hydrothermally Synthesized Re-Doped Mos2 Flower-Like Microspheres, Juan Aliaga, Pablo Vera, Juan Araya, Luis Ballesteros, Julio Urzúa, Mario Farías, Francisco Paraguay-Delgado, Gabriel Alonso-Núñez, Guillermo González, Eglantina Benavente

Faculty, Staff and Students Publications

In this research, we report a simple hydrothermal synthesis to prepare rhenium (Re)- doped MoS2 flower-like microspheres and the tuning of their structural, electronic, and electrocatalytic properties by modulating the insertion of Re. The obtained compounds were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Structural, morphological, and chemical analyses confirmed the synthesis of poorly crystalline Re-doped MoS2 flower-like microspheres composed of few stacked layers. They exhibit enhanced hydrogen evolution reaction (HER) performance with low overpotential of 210 mV at current density of 10 mA/cm2, with a …


The Use Of Probiotics To Prevent Ventilator-Associated Pneumonia In Adults, Michael Roper, Paige Douthett Dec 2019

The Use Of Probiotics To Prevent Ventilator-Associated Pneumonia In Adults, Michael Roper, Paige Douthett

Physician Assistant Capstones, 2016 to 2019

Objective: To assess the efficacy and safety of preventing the acquisition of ventilator- associated pneumonia with the use of probiotic supplementation, as compared to a placebo, among hospitalized adult men and women receiving more than 24 hours of mechanical ventilation. Design: Systematic Literature Review. Methods: Systematic searches were conducted through PubMed and Scopus using the search terms “ventilator”, “probiotics”, and “prevention”. Records were excluded from the analysis if they were published before 2015, full text was not available, studies other than randomized control trial or cohort studies, and if the study population was less than 18 years old. Results: Of …


Examining Multiple Cellular Pathways At Once Using Multiplex Hextuple Luciferase Assaying, Alejandro Sarrion-Perdigones, Lyra Chang, Yezabel Gonzalez, Tatiana Gallego-Flores, Damian W Young, Koen J T Venken Dec 2019

Examining Multiple Cellular Pathways At Once Using Multiplex Hextuple Luciferase Assaying, Alejandro Sarrion-Perdigones, Lyra Chang, Yezabel Gonzalez, Tatiana Gallego-Flores, Damian W Young, Koen J T Venken

Faculty, Staff and Students Publications

Sensitive simultaneous assessment of multiple signaling pathways within the same cells requires orthogonal reporters that can assay over large dynamic ranges. Luciferases are such genetically encoded candidates due to their sensitivity, versatility, and cost-effectiveness. We expand luciferase multiplexing in post-lysis endpoint luciferase assays from two to six. Light emissions are distinguished by a combination of distinct substrates and emission spectra deconvolution. All six luciferase reporter units are stitched together into one plasmid facilitating delivery of all reporter units through a process we termed solotransfection, minimizing experimental errors. We engineer a multiplex hextuple luciferase assay to probe pathway fluxes through five …


Residues And Residue Pairs Of Evolutionary Importance Differentially Direct Signaling Bias Of D2 Dopamine Receptors, María E Terrón-Díaz, Sara J Wright, Melina A Agosto, Olivier Lichtarge, Theodore G Wensel Dec 2019

Residues And Residue Pairs Of Evolutionary Importance Differentially Direct Signaling Bias Of D2 Dopamine Receptors, María E Terrón-Díaz, Sara J Wright, Melina A Agosto, Olivier Lichtarge, Theodore G Wensel

Faculty, Staff and Students Publications

The D2 dopamine receptor and the serotonin 5-hydroxytryptamine 2A receptor (5-HT2A) are closely-related G-protein–coupled receptors (GPCRs) from the class A bioamine subfamily. Despite structural similarity, they respond to distinct ligands through distinct downstream pathways, whose dysregulation is linked to depression, bipolar disorder, addiction, and psychosis. They are important drug targets, and it is important to understand how their bias toward G-protein versus β-arrestin signaling pathways is regulated. Previously, evolution-based computational approaches, difference Evolutionary Trace and Evolutionary Trace–Mutual information (ET-Mip), revealed residues and residue pairs that, when switched in the D2 receptor to the corresponding residues from 5-HT2A, altered ligand potency …


It's A Hard Nacht Life: Understanding How Nlrp12 Ticks, Abbigale Julia Brown Dec 2019

It's A Hard Nacht Life: Understanding How Nlrp12 Ticks, Abbigale Julia Brown

Graduate Theses/Dissertations

The protein NOD- like receptor pyrin domain containing 12 (NLRP12) comes from a family of protein receptors with a wide range of functions including fertility as well as anti-inflammatory properties. The biological role of NLRP12 is poorly understood: research on the mechanisms behind its function and/or activation remains contradictory between different cell models. Current research suggests its involvement in a multi-protein complex named the inflammasome. The alternative hypothesis that has also been proposed is that NLRP12 is not a part of the inflammasome, rather it negatively regulates a transcription factor known as NF-��B down stream of Toll-like receptors. NLRP12 is …