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2021

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Articles 2221 - 2250 of 4713

Full-Text Articles in Medical Specialties

The Dietary Management Of Potassium In Children With Ckd Stages 2-5 And On Dialysis-Clinical Practice Recommendations From The Pediatric Renal Nutrition Taskforce., An Desloovere, José Renken-Terhaerdt, Jetta Tuokkola, Vanessa Shaw, Larry A. Greenbaum, Dieter Haffner, Caroline Anderson, Christina L. Nelms, Michiel J S Oosterveld, Fabio Paglialonga, Nonnie Polderman, Leila Qizalbash, Bradley A. Warady, Rukshana Shroff, Johan Vande Walle Jun 2021

The Dietary Management Of Potassium In Children With Ckd Stages 2-5 And On Dialysis-Clinical Practice Recommendations From The Pediatric Renal Nutrition Taskforce., An Desloovere, José Renken-Terhaerdt, Jetta Tuokkola, Vanessa Shaw, Larry A. Greenbaum, Dieter Haffner, Caroline Anderson, Christina L. Nelms, Michiel J S Oosterveld, Fabio Paglialonga, Nonnie Polderman, Leila Qizalbash, Bradley A. Warady, Rukshana Shroff, Johan Vande Walle

Manuscripts, Articles, Book Chapters and Other Papers

Dyskalemias are often seen in children with chronic kidney disease (CKD). While hyperkalemia is common, with an increasing prevalence as glomerular filtration rate declines, hypokalemia may also occur, particularly in children with renal tubular disorders and those on intensive dialysis regimens. Dietary assessment and adjustment of potassium intake is critically important in children with CKD as hyperkalemia can be life-threatening. Manipulation of dietary potassium can be challenging as it may affect the intake of other nutrients and reduce palatability. The Pediatric Renal Nutrition Taskforce (PRNT), an international team of pediatric renal dietitians and pediatric nephrologists, has developed clinical practice recommendations …


Covid-19 In Children-Not Just Little Adults., Jennifer E. Schuster, Annabelle De St Maurice Jun 2021

Covid-19 In Children-Not Just Little Adults., Jennifer E. Schuster, Annabelle De St Maurice

Manuscripts, Articles, Book Chapters and Other Papers

Comment on


Active Implantable Cardioverter-Defibrillators In Continuous-Flow Left Ventricular Assist Device Recipients, Kuldeep Shah, Rahul Chaudhary, Mohit K. Turagam, Mahek Shah, Brijesh Patel, Gregg Lanier, Dhanunjaya Lakkireddy, Jalaj Garg Jun 2021

Active Implantable Cardioverter-Defibrillators In Continuous-Flow Left Ventricular Assist Device Recipients, Kuldeep Shah, Rahul Chaudhary, Mohit K. Turagam, Mahek Shah, Brijesh Patel, Gregg Lanier, Dhanunjaya Lakkireddy, Jalaj Garg

Division of Cardiology Faculty Papers

Introduction

Implantable cardioverter-defibrillator (ICD) in patients with heart failure with reduced ejection fraction reduces mortality secondary to malignant arrhythmias. Whether end-stage heart failure (HF) with continuous-flow left ventricular assist device (cf-LVAD) derive similar benefits remains controversial.

Methods

We performed a systematic literature review and meta-analysis of all published studies that examined the association between active ICDs and survival in advanced HF patients with cfLVAD. We searched PubMed, Medline, Embase, Ovid, and Cochrane for studies reporting the association between ICD and all-cause mortality in advanced HF patients with cfLVAD. Mantel-Haenszel risk ratio (RR) random-effects model was used to summarize data.

Results …


Next-Generation Sequencing In The Diagnosis Of Rare Pediatric Sinonasal Tumors., Atif A. Ahmed, Divya Vundamati, Midhat Farooqi, Elena Repnikova, Timothy Zinkus, Maxine Hetherington, Lorien Paulson Jun 2021

Next-Generation Sequencing In The Diagnosis Of Rare Pediatric Sinonasal Tumors., Atif A. Ahmed, Divya Vundamati, Midhat Farooqi, Elena Repnikova, Timothy Zinkus, Maxine Hetherington, Lorien Paulson

Manuscripts, Articles, Book Chapters and Other Papers

The diagnosis of desmoid fibromatosis or other spindle cell tumors in the sinonasal region is very rare in children and needs to be thoroughly confirmed with immunohistochemical and/or molecular tests. We report 2 patients with such rare tumors and describe the use of next-generation sequencing in their evaluation. A 3-year-old female had a 4.4-cm midline nasal cavity mass involving the bony septum and extending into the base of the skull bilaterally. The moderate cellular fibroblastic proliferation revealed areas of thick keloid-like collagen bands and other areas with myxoid edematous stroma. Deep targeted sequencing identified a novel G34V mutation in the


Changes In Student Behaviors And Policy Opinion Regarding E-Cigarettes At A Kentucky University From 2014 To 2018, Jason W. Marion, Alina Strand, Elliott Baldridge Jun 2021

Changes In Student Behaviors And Policy Opinion Regarding E-Cigarettes At A Kentucky University From 2014 To 2018, Jason W. Marion, Alina Strand, Elliott Baldridge

EKU Faculty and Staff Scholarship

The behaviors and opinions regarding e-cigarette use and campus policies prohibiting vaping vary greatly among college students nationally. Kentucky is one of the four U.S. states with the highest tobacco use prevalence, and characterizing e-cigarette use, trends and policy opinions among Kentucky undergraduates may inform interventions. To characterize population-level differences in e-cigarette-related behaviors and policy opinions among undergraduates from 2014 to 2018, results from two cross-sectional surveys (2014 and 2018) from a public regional university in south-central Kentucky were analyzed. Students from randomly selected undergraduate general studies courses completed a 5-minute in-class survey. Data were obtained from 514 and 519 …


Timing Of Surgery Following Sars-Cov-2 Infection: An International Prospective Cohort Study, Covidsurg Collaborative, Globalsurg Collaborative Jun 2021

Timing Of Surgery Following Sars-Cov-2 Infection: An International Prospective Cohort Study, Covidsurg Collaborative, Globalsurg Collaborative

Faculty, Staff and Student Publications

Peri-operative SARS-CoV-2 infection increases postoperative mortality. The aim of this study was to determine the optimal duration of planned delay before surgery in patients who have had SARS-CoV-2 infection. This international, multicentre, prospective cohort study included patients undergoing elective or emergency surgery during October 2020. Surgical patients with pre-operative SARS-CoV-2 infection were compared with those without previous SARS-CoV-2 infection. The primary outcome measure was 30-day postoperative mortality. Logistic regression models were used to calculate adjusted 30-day mortality rates stratified by time from diagnosis of SARS-CoV-2 infection to surgery. Among 140,231 patients (116 countries), 3127 patients (2.2%) had a pre-operative SARS-CoV-2 …


Assess The Interplay Effect Based On The Cyclotron Accelerator Proton Therapy System Machine-Specific Delivery Sequence Model, Lewei Zhao, Gang Liu, J Shen, A Lee, Di Yan, Rohan Deraniyagala, Craig Stevens, Weili Zheng, Xiaoqiang Li, S Tang, Xuanfeng Ding Jun 2021

Assess The Interplay Effect Based On The Cyclotron Accelerator Proton Therapy System Machine-Specific Delivery Sequence Model, Lewei Zhao, Gang Liu, J Shen, A Lee, Di Yan, Rohan Deraniyagala, Craig Stevens, Weili Zheng, Xiaoqiang Li, S Tang, Xuanfeng Ding

Conference Presentation Abstracts

No abstract provided.


Narrative Review Of Socioeconomic And Racial Disparities In The Treatment Of Early Stage Lung Cancer, Nathaniel R. Evans Iii, Tyler Grenda, Nkosi H. Alvarez, Olugbenga Okusanya Jun 2021

Narrative Review Of Socioeconomic And Racial Disparities In The Treatment Of Early Stage Lung Cancer, Nathaniel R. Evans Iii, Tyler Grenda, Nkosi H. Alvarez, Olugbenga Okusanya

Department of Surgery Faculty Papers

Background: To review and discuss the current literature regarding socio-economic and racial disparities in the treatment of early-stage non-small cell lung cancer (NSCLC). Background: Lung cancer is the most lethal solid organ malignancy in the United States, with the second-highest incidence of new malignances for both men and women. While overall survival for lung cancer is improving, significant socioeconomic and racial disparities in outcomes for lung cancer persist. Methods: Narrative review of peer reviewed literature synthesizing findings retrieved from searches of computerized databases, primary article reference lists, authoritative texts and expert options. Results: The current incidence of lung cancer appears …


The Contribution Of Dysphagia To Acute Stroke Morbidity And Mortality In Nigeria: A Prospective Study, O O. Olajide, Philip Adebayo, F T. Taiwo, M O. Owolabi, A Ogunniyi Jun 2021

The Contribution Of Dysphagia To Acute Stroke Morbidity And Mortality In Nigeria: A Prospective Study, O O. Olajide, Philip Adebayo, F T. Taiwo, M O. Owolabi, A Ogunniyi

Internal Medicine, East Africa

Background: The assessment of time-trend morbidity and mortality in acute stroke is critical to clinical policy decisions and resource allocation.

Objectives: To determine the prevalence of dysphagia in acute stroke and the impact of dysphagia on short term stroke outcome (30 days post-stroke).

Methods: This was a prospective longitudinal study. Bedside screening for dysphagia modified Rankin score (MRS) and Barthel Index (BI) were performed on acute stroke patients on day 1, day 7, day 14 and day 30 after stroke to determine the frequency of dysphagia. Patients with dysphagia were then compared with age- and gender-matched controls (stroke patients without …


Estimation Of Excess Mortality Rates Among Us Assisted Living Residents During The Covid-19 Pandemic., Kali S. Thomas, Wenhan Zhang, David M. Dosa, Paula Carder, Philip Sloane, Sheryl Zimmerman Jun 2021

Estimation Of Excess Mortality Rates Among Us Assisted Living Residents During The Covid-19 Pandemic., Kali S. Thomas, Wenhan Zhang, David M. Dosa, Paula Carder, Philip Sloane, Sheryl Zimmerman

Institute on Aging Publications

The devastating effects of COVID-19 among older adults residing in long-term care settings have been well documented.1 Although much attention has been paid to COVID-19–associated mortality in nursing homes,2 less is understood about its effects on assisted living residents. Most assisted living residents are aged 80 years or older and many have multiple chronic illnesses, making them highly susceptible to poor outcomes of COVID-19.3 This study examines the excess mortality among a US cohort of assisted living residents during the COVID-19 pandemic.


Toxoplasma Gondii, Suicidal Behavior, And Intermediate Phenotypes For Suicidal Behavior, Teodor T. Postolache, Abhishek Wadhawan, Dan Rujescu, Andrew J. Hoisington, Aline Dagdag, Enrique Baca-Garcia, Christopher A. Lowry, Olaoluwa O. Okusaga, Lisa A. Brenner Jun 2021

Toxoplasma Gondii, Suicidal Behavior, And Intermediate Phenotypes For Suicidal Behavior, Teodor T. Postolache, Abhishek Wadhawan, Dan Rujescu, Andrew J. Hoisington, Aline Dagdag, Enrique Baca-Garcia, Christopher A. Lowry, Olaoluwa O. Okusaga, Lisa A. Brenner

Faculty Publications

Within the general literature on infections and suicidal behavior, studies on Toxoplasma gondii ( T. gondii ) occupy a central position. This is related to the parasite's neurotropism, high prevalence of chronic infection, as well as specific and non-specific behavioral alterations in rodents that lead to increased risk taking, which are recapitulated in humans by T. gondii's associations with suicidal behavior, as well as trait impulsivity and aggression, mental illness and traffic accidents. This paper is a detailed review of the associations between T. gondii serology and suicidal behavior, a field of study that started 15 years ago with our …


Clinical, Neuroimaging, And Molecular Spectrum Of Tecpr2-Associated Hereditary Sensory And Autonomic Neuropathy With Intellectual Disability, Sonja Neuser, Barbara Brechmann, Gali Heimer, Ines Brösse, Susanna Schubert, Lauren O'Grady, Michael Zech, Siddharth Srivastava, Shahnaz Ibrahim, Fatima Khan Jun 2021

Clinical, Neuroimaging, And Molecular Spectrum Of Tecpr2-Associated Hereditary Sensory And Autonomic Neuropathy With Intellectual Disability, Sonja Neuser, Barbara Brechmann, Gali Heimer, Ines Brösse, Susanna Schubert, Lauren O'Grady, Michael Zech, Siddharth Srivastava, Shahnaz Ibrahim, Fatima Khan

Department of Paediatrics and Child Health

Bi-allelic TECPR2 variants have been associated with a complex syndrome with features of both a neurodevelopmental and neurodegenerative disorder. Here, we provide a comprehensive clinical description and variant interpretation framework for this genetic locus. Through international collaboration, we identified 17 individuals from 15 families with bi-allelic TECPR2-variants. We systemically reviewed clinical and molecular data from this cohort and 11 cases previously reported. Phenotypes were standardized using Human Phenotype Ontology terms. A cross-sectional analysis revealed global developmental delay/intellectual disability, muscular hypotonia, ataxia, hyporeflexia, respiratory infections, and central/nocturnal hypopnea as core manifestations. A review of brain magnetic resonance imaging scans demonstrated a …


Evaluating Motor Performance With The Bruininks-Oseretsky Test Of Motor Proficiency In Impoverished Pakistani Children, Zehra Habib Hasan, Fariha Shaheen, Arjumand Rizvi, Jelena Obradovic, Aisha Khan Yousafzai Jun 2021

Evaluating Motor Performance With The Bruininks-Oseretsky Test Of Motor Proficiency In Impoverished Pakistani Children, Zehra Habib Hasan, Fariha Shaheen, Arjumand Rizvi, Jelena Obradovic, Aisha Khan Yousafzai

Department of Paediatrics and Child Health

Objective: To evaluate the sensitivity of the modified Brief Form of Bruininks Oseretsky Test in identifying motor differences secondary to malnutrition and poverty.
Methods: This longitudinal cohort study was conducted at Nowshero Feroze, Sindh from 2013 to 2014 and comprised data drawn from children who participated in a randomised controlled trial, that assessed responsive stimulation and nutrition interventions in the first two years of life. Outcome measures included motor development assessed using Brief Form of Bruininks Oseretsky Test, child anthropometry and household economic and demographic information. Data was analysed using SPSS 15 and STATA 12.
Results: Of the 1058 children, …


Evaluation Of Serum Magnesium Differences In Hypertensive Crises And Control Patients: A Randomly Matched Case-Control Study, Ifeanyi Chukwu O. Onor, Emily K. Johnston, Nicole G. Little, Lashira M. Hill, Oluwabunmi E. Lawal, Casey J. Payne, Mallory R. Coleman, Carolkim H. Huynh, Sarah E. Bilbe, Ahlam A. Ayyad, Kabrea J. Jones, Jasmine D. Kinnard, Rosanna Dastoori, Devinn K. Rolland, Amanda S. Miller, Robbie A. Beyl, Christopher J. Gillard, John I. Okogbaa, Daniel F. Sarpong, Rim M. Hadgu, Amne Borghol, Samuel C. Okpechi, Mihran V. Naljayan, Shane E. Sanne, Shane G. Guillory Jun 2021

Evaluation Of Serum Magnesium Differences In Hypertensive Crises And Control Patients: A Randomly Matched Case-Control Study, Ifeanyi Chukwu O. Onor, Emily K. Johnston, Nicole G. Little, Lashira M. Hill, Oluwabunmi E. Lawal, Casey J. Payne, Mallory R. Coleman, Carolkim H. Huynh, Sarah E. Bilbe, Ahlam A. Ayyad, Kabrea J. Jones, Jasmine D. Kinnard, Rosanna Dastoori, Devinn K. Rolland, Amanda S. Miller, Robbie A. Beyl, Christopher J. Gillard, John I. Okogbaa, Daniel F. Sarpong, Rim M. Hadgu, Amne Borghol, Samuel C. Okpechi, Mihran V. Naljayan, Shane E. Sanne, Shane G. Guillory

School of Medicine Faculty Publications

Although the role of magnesium in blood pressure has been well studied among hypertensive patients, no study has explored the role of magnesium in hypertensive crises. The primary objective of this study is to evaluate the differences in serum magnesium levels between hypertensive crises patients and matched controls (age-, sex-, race-, and diabetes-matched) in a 1:1 random match. This study is a single-center, retrospective, chart review, case-control study of patients with hypertensive crises (case group) and patients without hypertensive crises (control group). Patients were included in the case group if they were 18 years of age or older with hypertensive …


Advantage Of 16s Rrna Amplicon Sequencing In Helicobacter Pylori Diagnosis, Boldbaatar Gantuya, Hashem B El Serag, Batsaikhan Saruuljavkhlan, Dashdorj Azzaya, Takashi Matsumoto, Tomohisa Uchida, Khasag Oyuntsetseg, Nyamdorj Oyunbileg, Duger Davaadorj, Yoshio Yamaoka Jun 2021

Advantage Of 16s Rrna Amplicon Sequencing In Helicobacter Pylori Diagnosis, Boldbaatar Gantuya, Hashem B El Serag, Batsaikhan Saruuljavkhlan, Dashdorj Azzaya, Takashi Matsumoto, Tomohisa Uchida, Khasag Oyuntsetseg, Nyamdorj Oyunbileg, Duger Davaadorj, Yoshio Yamaoka

Faculty, Staff and Students Publications

BACKGROUND: 16S rRNA amplicon sequencing is an accurate method of detecting microbial infection without culture. It is unclear if sequencing has additional benefits over routine diagnostic methods for Helicobacter pylori testing.

METHODS: We enrolled Mongolian volunteers with dyspepsia. Using routine diagnostic methods, positive H. pylori was defined as positive results on histology/immunohistochemistry, culture, rapid urease test, or serology; negative H. pylori was defined by negative results from all these tests. We performed 16S rRNA sequencing on gastric biopsy specimens and calculated cutoffs for operational taxonomic units (OTUs) and relative abundance (RA) to define positive results using ROC curves.

RESULTS: We …


Psychological Impact Of Genetic And Clinical Screening For Pulmonary Fibrosis On Asymptomatic First-Degree Relatives Of Affected Individuals, Nikkola Carmichael, Jose M Martinez Manzano, Luisa D Quesada-Arias, Sergio De Frías Poli, Maura Alvarez Baumgartner, Maria A Planchart Ferretto, Lisa Digianni, Shannon Gampala-Sagar, Dominick A Leone, Swati Gulati, Souheil Y El-Chemaly, Hilary J Goldberg, Rachel Putman, Hiroto Hatabu, Ivan O Rosas, Gary M Hunninghake, Benjamin A Raby Jun 2021

Psychological Impact Of Genetic And Clinical Screening For Pulmonary Fibrosis On Asymptomatic First-Degree Relatives Of Affected Individuals, Nikkola Carmichael, Jose M Martinez Manzano, Luisa D Quesada-Arias, Sergio De Frías Poli, Maura Alvarez Baumgartner, Maria A Planchart Ferretto, Lisa Digianni, Shannon Gampala-Sagar, Dominick A Leone, Swati Gulati, Souheil Y El-Chemaly, Hilary J Goldberg, Rachel Putman, Hiroto Hatabu, Ivan O Rosas, Gary M Hunninghake, Benjamin A Raby

Faculty, Staff and Students Publications

Screening for pulmonary fibrosis may help to identify early stages of the disease. We assessed the psychological impact of screening undiagnosed first-degree relatives of patients with pulmonary fibrosis by administering two validated measures after participants received their results: the Decisional Regret Scale and the Feelings About genomiC Testing Results Questionnaire. More than 90% of relatives reported either no or mild decisional regret. Increased measures of decisional regret and negative feelings were present in those found to have a low diffusion capacity of carbon monoxide or interstitial lung abnormalities. Results of telomere length and genetic testing did not significantly impact regret.


The Synergy Of Bet Inhibitors With Aurora A Kinase Inhibitors In Mycn-Amplified Neuroblastoma Is Heightened With Functional Tp53, Joanna S Yi, Oscar Sias-Garcia, Nicole Nasholm, Xiaoyu Hu, Amanda Balboni Iniguez, Matthew D Hall, Mindy Davis, Rajarshi Guha, Myrthala Moreno-Smith, Eveline Barbieri, Kevin Duong, Jessica Koach, Jun Qi, James E Bradner, Kimberly Stegmaier, William A Weiss, W Clay Gustafson Jun 2021

The Synergy Of Bet Inhibitors With Aurora A Kinase Inhibitors In Mycn-Amplified Neuroblastoma Is Heightened With Functional Tp53, Joanna S Yi, Oscar Sias-Garcia, Nicole Nasholm, Xiaoyu Hu, Amanda Balboni Iniguez, Matthew D Hall, Mindy Davis, Rajarshi Guha, Myrthala Moreno-Smith, Eveline Barbieri, Kevin Duong, Jessica Koach, Jun Qi, James E Bradner, Kimberly Stegmaier, William A Weiss, W Clay Gustafson

Faculty, Staff and Students Publications

Amplification of MYCN is a poor prognostic feature in neuroblastoma (NBL) indicating aggressive disease. We and others have shown BET bromodomain inhibitors (BETi) target MYCN indirectly by downregulating its transcription. Here we sought to identify agents that synergize with BETi and to identify biomarkers of resistance. We previously performed a viability screen of ∼1,900 oncology-focused compounds combined with BET bromodomain inhibitors against MYCN-amplified NBL cell lines. Reanalysis of our screening results prominently identified inhibitors of aurora kinase A (AURKAi) to be highly synergistic with BETi. We confirmed the anti-proliferative effects of several BETi+AURKAi combinations in MYCN-amplified NBL cell lines. Compared …


A Novel Biomarker Panel For The Early Detection And Risk Assessment Of Hepatocellular Carcinoma In Patients With Cirrhosis, Ilvira M Khan, Donjeta Gjuka, Jingjing Jiao, Xiaoling Song, Ying Wang, Jing Wang, Peng Wei, Hashem B El-Serag, Jorge A Marrero, Laura Beretta Jun 2021

A Novel Biomarker Panel For The Early Detection And Risk Assessment Of Hepatocellular Carcinoma In Patients With Cirrhosis, Ilvira M Khan, Donjeta Gjuka, Jingjing Jiao, Xiaoling Song, Ying Wang, Jing Wang, Peng Wei, Hashem B El-Serag, Jorge A Marrero, Laura Beretta

Faculty, Staff and Students Publications

Novel biomarkers for hepatocellular carcinoma (HCC) surveillance in patients with cirrhosis are urgently needed. We previously identified osteopontin (OPN) as a promising biomarker for the early detection of HCC. This study is to further validate the performance of OPN and identify fatty acids (FA) that could improve OPN's performance in HCC risk assessment in patients with cirrhosis. To that end, we selected 103 patients with cirrhosis under surveillance. Among them, 40 patients developed HCC during follow-up. We investigated in these 103 patients, the association between HCC incidence and prediagnostic serum levels of AFP, OPN, and 46 FAs. OPN performance was …


Understanding The "Social" In "Social Media" An Analysis Of Twitter Engagement Of Pulmonary And Critical Care Fellowship Programs, Sheetal Gandotra, Nancy H Stewart, Dina Khateeb, Puneet Garcha, W Graham Carlos, Christopher L Carroll, Viren Kaul Jun 2021

Understanding The "Social" In "Social Media" An Analysis Of Twitter Engagement Of Pulmonary And Critical Care Fellowship Programs, Sheetal Gandotra, Nancy H Stewart, Dina Khateeb, Puneet Garcha, W Graham Carlos, Christopher L Carroll, Viren Kaul

Faculty, Staff and Students Publications

Background: Social media is ubiquitous as a tool for collaboration, networking, and dissemination. However, little is known about use of social media platforms by pulmonary and critical care medicine fellowship programs.

Objective: We identify and characterize pulmonary and critical care fellowship programs using Twitter and Instagram, as well as the posting behaviors of their social media accounts.

Methods: We identified all adult and pediatric pulmonary, critical care medicine (CCM), and combined pulmonary and critical care medicine (PCCM) programs in the United States using the Electronic Residency Application Service. We searched for Twitter profiles for each program between January 1, 2018, …


Two Mechanisms Of Chromosome Fragility At Replication-Termination Sites In Bacteria, Qian Mei, Devon M Fitzgerald, Jingjing Liu, Jun Xia, John P Pribis, Yin Zhai, Ralf B Nehring, Jacob Paiano, Heyuan Li, Andre Nussenzweig, P J Hastings, Susan M Rosenberg Jun 2021

Two Mechanisms Of Chromosome Fragility At Replication-Termination Sites In Bacteria, Qian Mei, Devon M Fitzgerald, Jingjing Liu, Jun Xia, John P Pribis, Yin Zhai, Ralf B Nehring, Jacob Paiano, Heyuan Li, Andre Nussenzweig, P J Hastings, Susan M Rosenberg

Faculty, Staff and Students Publications

Chromosomal fragile sites are implicated in promoting genome instability, which drives cancers and neurological diseases. Yet, the causes and mechanisms of chromosome fragility remain speculative. Here, we identify three spontaneous fragile sites in the Escherichia coli genome and define their DNA damage and repair intermediates at high resolution. We find that all three sites, all in the region of replication termination, display recurrent four-way DNA or Holliday junctions (HJs) and recurrent DNA breaks. Homology-directed double-strand break repair generates the recurrent HJs at all of these sites; however, distinct mechanisms of DNA breakage are implicated: replication fork collapse at natural replication …


Ube2i Deletion In Adipocytes Causes Lipoatrophy In Mice, Aaron R Cox, Natasha Chernis, Kang Ho Kim, Peter M Masschelin, Pradip K Saha, Shawn M Briley, Robert Sharp, Xin Li, Jessica B Felix, Zheng Sun, David D Moore, Stephanie A Pangas, Sean M Hartig Jun 2021

Ube2i Deletion In Adipocytes Causes Lipoatrophy In Mice, Aaron R Cox, Natasha Chernis, Kang Ho Kim, Peter M Masschelin, Pradip K Saha, Shawn M Briley, Robert Sharp, Xin Li, Jessica B Felix, Zheng Sun, David D Moore, Stephanie A Pangas, Sean M Hartig

Faculty, Staff and Students Publications

OBJECTIVE: White adipose tissue (WAT) expansion regulates energy balance and overall metabolic homeostasis. The absence or loss of WAT occurring through lipodystrophy and lipoatrophy contributes to the development of hepatic steatosis and insulin resistance. We previously demonstrated that sole small ubiquitin-like modifier (SUMO) E2-conjugating enzyme Ube2i represses human adipocyte differentiation. The role of Ube2i during WAT development remains unknown.

METHODS: To determine how Ube2i impacts body composition and energy balance, we generated adipocyte-specific Ube2i knockout mice (Ube2i

RESULTS: Surprisingly, Ube2i

CONCLUSIONS: Our results demonstrate that Ube2i expression in mature adipocytes allows WAT expansion during postnatal growth. Deletion of Ube2i in …


Young Athletes: Preventing Sudden Death By Adopting A Modern Screening Approach? A Critical Review And The Opening Of A Debate, Paolo Angelini, Raja Muthupillai, Alberto Lopez, Benjamin Cheong, Carlo Uribe, Eduardo Hernandez, Stephanie Coulter, Emerson Perin, Silvana Molossi, Federico Gentile, Scott Flamm, Giovanni Lorenz, Flavio D'Ascenzi, Jonathan Tobis, Roberto Sarnari, Antonio Corno, James Furgerson, Amedeo Chiribiri, Adriana D M Villa, Fulvio Orzan, Pedro Brugada, John Jefferies, Pierre Aubry, Jeffrey Towbin, Gaetano Thiene, Robert Tomanek Jun 2021

Young Athletes: Preventing Sudden Death By Adopting A Modern Screening Approach? A Critical Review And The Opening Of A Debate, Paolo Angelini, Raja Muthupillai, Alberto Lopez, Benjamin Cheong, Carlo Uribe, Eduardo Hernandez, Stephanie Coulter, Emerson Perin, Silvana Molossi, Federico Gentile, Scott Flamm, Giovanni Lorenz, Flavio D'Ascenzi, Jonathan Tobis, Roberto Sarnari, Antonio Corno, James Furgerson, Amedeo Chiribiri, Adriana D M Villa, Fulvio Orzan, Pedro Brugada, John Jefferies, Pierre Aubry, Jeffrey Towbin, Gaetano Thiene, Robert Tomanek

Faculty, Staff and Students Publications

Preventing sudden cardiac death (SCD) in athletes is a primary duty of sports cardiologists. Current recommendations for detecting high-risk cardiovascular conditions (hr-CVCs) are history and physical examination (H&P)-based. We discuss the effectiveness of H&P-based screening versus more-modern and accurate methods. In this position paper, we review current authoritative statements and suggest a novel alternative: screening MRI (s-MRI), supported by evidence from a preliminary population-based study (completed in 2018), and a prospective, controlled study in military recruits (in development).

We present: 1. Literature-Based Comparisons (for diagnosing hr-CVCs): Two recent studies using traditional methods to identify hr-CVCs in >3,000 young athletes are …


Evaluation Of Diazepam Nasal Spray In Patients With Epilepsy Concomitantly Using Maintenance Benzodiazepines: An Interim Subgroup Analysis From A Phase 3, Long-Term, Open-Label Safety Study., Eric B Segal, Daniel Tarquinio, Ian Miller, James W Wheless, Dennis Dlugos, Victor Biton, Gregory D Cascino, Jay Desai, R Edward Hogan, Kore Liow, Michael R Sperling, Blanca Vazquez, David F Cook, Adrian L Rabinowicz, Enrique Carrazana Jun 2021

Evaluation Of Diazepam Nasal Spray In Patients With Epilepsy Concomitantly Using Maintenance Benzodiazepines: An Interim Subgroup Analysis From A Phase 3, Long-Term, Open-Label Safety Study., Eric B Segal, Daniel Tarquinio, Ian Miller, James W Wheless, Dennis Dlugos, Victor Biton, Gregory D Cascino, Jay Desai, R Edward Hogan, Kore Liow, Michael R Sperling, Blanca Vazquez, David F Cook, Adrian L Rabinowicz, Enrique Carrazana

Department of Neurology Faculty Papers

OBJECTIVE: Diazepam nasal spray (Valtoco), indicated for acute treatment of frequent seizure activity (seizure clusters) in patients with epilepsy ≥6 years of age, is designed to be a rapid, noninvasive, socially acceptable route of administration. This interim analysis evaluated the safety profile of diazepam nasal spray in patients with and without concomitant use of benzodiazepines, with use of a second dose for a seizure cluster as a proxy for effectiveness.

METHODS: A long-term, phase 3, open-label safety study enrolled patients with epilepsy who had seizures despite a stable antiseizure medication regimen.

RESULTS: Among 175 patients enrolled by October 31, 2019, …


Development Of A Standardized Histopathology Scoring System Using Machine Learning Algorithms For Intervertebral Disc Degeneration In The Mouse Model-An Ors Spine Section Initiative., Itzel Paola Melgoza, Srish S Chenna, Steven Tessier, Yejia Zhang, Simon Y Tang, Takashi Ohnishi, Emanuel José Novais, Geoffrey J Kerr, Sarthak Mohanty, Vivian Tam, Wilson C W Chan, Chao-Ming Zhou, Ying Zhang, Victor Y Leung, Angela K Brice, Cheryle A Séguin, Danny Chan, Nam Vo, Makarand V Risbud, Chitra L Dahia Jun 2021

Development Of A Standardized Histopathology Scoring System Using Machine Learning Algorithms For Intervertebral Disc Degeneration In The Mouse Model-An Ors Spine Section Initiative., Itzel Paola Melgoza, Srish S Chenna, Steven Tessier, Yejia Zhang, Simon Y Tang, Takashi Ohnishi, Emanuel José Novais, Geoffrey J Kerr, Sarthak Mohanty, Vivian Tam, Wilson C W Chan, Chao-Ming Zhou, Ying Zhang, Victor Y Leung, Angela K Brice, Cheryle A Séguin, Danny Chan, Nam Vo, Makarand V Risbud, Chitra L Dahia

Department of Orthopaedic Surgery Faculty Papers

Mice have been increasingly used as preclinical model to elucidate mechanisms and test therapeutics for treating intervertebral disc degeneration (IDD). Several intervertebral disc (IVD) histological scoring systems have been proposed, but none exists that reliably quantitate mouse disc pathologies. Here, we report a new robust quantitative mouse IVD histopathological scoring system developed by building consensus from the spine community analyses of previous scoring systems and features noted on different mouse models of IDD. The new scoring system analyzes 14 key histopathological features from nucleus pulposus (NP), annulus fibrosus (AF), endplate (EP), and AF/NP/EP interface regions. Each feature is categorized and …


Female Mice May Have Exacerbated Catabolic Signalling Response Compared To Male Mice During Development And Progression Of Disuse Atrophy, Megan E. Rosa-Caldwell, Seongkyun Lim, Wesley A. Haynie, Jacob L. Brown, John William Deaver, Francielly Morena Da Silva, Lisa T. Jansen, David E. Lee, Michael P. Wiggs, Tyrone A. Washington, Nicholas P. Greene Jun 2021

Female Mice May Have Exacerbated Catabolic Signalling Response Compared To Male Mice During Development And Progression Of Disuse Atrophy, Megan E. Rosa-Caldwell, Seongkyun Lim, Wesley A. Haynie, Jacob L. Brown, John William Deaver, Francielly Morena Da Silva, Lisa T. Jansen, David E. Lee, Michael P. Wiggs, Tyrone A. Washington, Nicholas P. Greene

Health, Human Performance and Recreation Faculty Publications and Presentations

Background

Muscle atrophy is a common pathology associated with disuse, such as prolonged bed rest or spaceflight, and is associated with detrimental health outcomes. There is emerging evidence that disuse atrophy may differentially affect males and females. Cellular mechanisms contributing to the development and progression of disuse remain elusive, particularly protein turnover cascades. The purpose of this study was to investigate the initial development and progression of disuse muscle atrophy in male and female mice using the well-established model of hindlimb unloading (HU).

Methods

One hundred C57BL/6J mice (50 male and 50 female) were hindlimb suspended for 0 (control), 24, …


Safety And Effectiveness Of Ultrasound Guided Peripheral Nerve Blocks: Audit At Tertiary Care Hospital, Asma Abdus Salam, Riffat Aamir, Robyna Irshad Khan, Aliya Ahmed, Azhar Rehman Jun 2021

Safety And Effectiveness Of Ultrasound Guided Peripheral Nerve Blocks: Audit At Tertiary Care Hospital, Asma Abdus Salam, Riffat Aamir, Robyna Irshad Khan, Aliya Ahmed, Azhar Rehman

Department of Anaesthesia

Objective: To assess the safety and effectiveness of peripheral nerve blocks using ultrasound.
Methods: The retrospective study was conducted at the Aga Khan University Hospital, Karachi, and comprised data of all patients who received peripheral nerve blocks as part of anaesthesia care between January 2015 and January 2017. The data included outcomes of peripheral nerve block effectiveness, complications and limb conditions after the block. Peripheral nerve block effectiveness was assessed by monitoring pain scores at rest and on movement, and the requirement of co-analgesia. Complications, like numbness, motor block, metallic taste, hypotension and respiratory depression, were also assessed. Data was …


Ratio Of Height To Thyromental Distance: A Comparison With Mallampati And Upper Lip Bite Test For Predicting Difficult Intubation In Pakistani Population, Saman Tauheed Ali, Khalid Samad, Syed Amir Raza, Muhammad Qamarul Hoda Jun 2021

Ratio Of Height To Thyromental Distance: A Comparison With Mallampati And Upper Lip Bite Test For Predicting Difficult Intubation In Pakistani Population, Saman Tauheed Ali, Khalid Samad, Syed Amir Raza, Muhammad Qamarul Hoda

Department of Anaesthesia

Objective: To compare the accuracy of three diagnostic tests in predicting difficult laryngoscopy using Cormack and Lehane grade as the gold standard.
Methods: The cross-sectional study was conducted at the Aga Khan University Hospital, Karachi, from August 2014 to August 2015, and comprised patients who required endotracheal intubation for elective surgical procedures. The primary investigator used ratio of height to thyromental distance, upper lip bite test and the modified Mallampati test for assessing the airway correlated with laryngoscopic view based on Cormack and Lehane grading. Data was analysed using SPSS 19.
Results: Of the 383 patients, 59(15.4%) were classified as …


Patient Perceptions And Use Of Non-Statin Lipid Lowering Therapy Among Patients With Or At Risk For Atherosclerotic Cardiovascular Disease: Insights From The Palm Registry, Angela Lowenstern, Shuang Li, Ann Marie Navar, Salim S Virani, Veronique L Roger, Jennifer G Robinson, Anne C Goldberg, Wendy Kampman, Eric D Peterson, Tracy Y Wang Jun 2021

Patient Perceptions And Use Of Non-Statin Lipid Lowering Therapy Among Patients With Or At Risk For Atherosclerotic Cardiovascular Disease: Insights From The Palm Registry, Angela Lowenstern, Shuang Li, Ann Marie Navar, Salim S Virani, Veronique L Roger, Jennifer G Robinson, Anne C Goldberg, Wendy Kampman, Eric D Peterson, Tracy Y Wang

Faculty, Staff and Students Publications

BACKGROUND: Non-statin lipid lowering therapies (LLTs) provide additional treatment options for patients. Use patterns and patient perceptions of non-statin LLT remain incompletely described.

HYPOTHESIS: The guideline-recommended statin intensity remains underutilized in patients treated with and without non-statin LLT.

METHODS: The PALM Registry collected LLT information on patients with or at risk of ASCVD treated at 125 US clinics in 2015. We compared patient perceptions, lipid levels and statin use among patients treated with and without non-statin LLT.

RESULTS: Among 7720 patients, 1930 (25.0%) were treated with a non-statin LLT (1249 fish oil, 417 fibrates, 329 ezetimibe, 196 niacin). Concurrent statin …


Patient-Reported Outcomes Through 1 Year Of An Hiv-1 Clinical Trial Evaluating Long-Acting Cabotegravir And Rilpivirine Administered Every 4 Or 8 Weeks (Atlas-2m), Vasiliki Chounta, Edgar T. Overton, Anthony Mills, Susan Swindells, Paul D. Benn, Simon Vanveggel, Rodica Van Solingen-Ristea, Yuanyuan Wang, Krischan J. Hudson, Mark S. Shaefer, David A. Margolis, Kimberly Y. Smith, William R. Spreen May 2021

Patient-Reported Outcomes Through 1 Year Of An Hiv-1 Clinical Trial Evaluating Long-Acting Cabotegravir And Rilpivirine Administered Every 4 Or 8 Weeks (Atlas-2m), Vasiliki Chounta, Edgar T. Overton, Anthony Mills, Susan Swindells, Paul D. Benn, Simon Vanveggel, Rodica Van Solingen-Ristea, Yuanyuan Wang, Krischan J. Hudson, Mark S. Shaefer, David A. Margolis, Kimberly Y. Smith, William R. Spreen

Journal Articles: Infectious Diseases

BACKGROUND: Advances in HIV-1 therapeutics have led to the development of a range of daily oral treatment regimens, which share similar high efficacy rates. Consequently, more emphasis is being placed upon the individual's experience of treatment and impact on quality of life. The first long-acting injectable antiretroviral therapy for HIV-1 (long-acting cabotegravir + rilpivirine [CAB + RPV LA]) may address challenges associated with oral treatment for HIV-1, such as stigma, pill burden/fatigue, drug-food interactions, and adherence. Patient-reported outcomes (PROs) collected in an HIV-1 clinical trial (ATLAS-2M; NCT03299049) comparing participants' experience with two dosing regimens (every 4 weeks [Q4W] vs. every …


Prevalence Of Tp-53/Rb-1 Co-Mutation In Large Cell Neuroendocrine Carcinoma, Hoda Saghaeiannejad Esfahani, Cory M. Vela, Aman Chauhan May 2021

Prevalence Of Tp-53/Rb-1 Co-Mutation In Large Cell Neuroendocrine Carcinoma, Hoda Saghaeiannejad Esfahani, Cory M. Vela, Aman Chauhan

Internal Medicine Faculty Publications

Introduction: Large cell neuroendocrine carcinoma (LCNEC) is a rare and highly aggressive high-grade neuroendocrine neoplasm, which can arise from anywhere in the body. Due to its rarity there is a lacuna in our understanding of LCNEC’s molecular biology. In 2016, Rekhtman and colleagues presented one of the largest molecular sequencing series of pulmonary LCNEC. They differentiated genomic profiles of LCNEC into two major subsets: small cell lung cancer (SCLC)-like, characterized by TP53 + RB1 co-mutation/loss, and non-small cell lung cancer (NSCLC)-like, characterized by the lack of co-altered TP53 + RB1. This finding is of significance because at present LCNEC patients …