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M Tashani, M Alfelali, O Barasheed, A S Alqahtani, L Heron, M Wong, H Rashid, H Findlow, R Borrow, R Booy
Hajj pilgrims are susceptible to several serious infections and are required to receive multiple vaccinations. Polysaccharide-protein conjugate vaccines contain carrier proteins such as tetanus toxoid (TT), diphtheria toxoid or a mutant of diphtheria toxoid (CRM197). These carrier proteins may interact with other conjugate or combination vaccines containing tetanus or diphtheria on concurrent or sequential administration. We examined the immune interaction of separate and concomitant administration of a tetanus/diphtheria/acellular pertussis (Tdap) vaccine with a TT-conjugated quadrivalent meningococcal vaccine (MCV4) (coadministered with 13-valent pneumococcal CRM197-conjugate vaccine [PCV13]) in adult Australian pilgrims before attending Hajj in 2015...
June 4, 2018: Vaccine
Qanta A Ahmed, Ziad A Memish
Human behavior has long engaged in collective behavior assembling in crowds. The Christian pilgrimage to the Holy Land which has been recorded since the 4th century while the Hajj, Islam's great pilgrimage, has existed for fourteen centuries of which a body of literature devoted to the travelogues of the Hajj has existed for over ten centuries. Football, a sport played worldwide by more than 1.5 million teams and in 300,000 clubs. Most people however play outside of the officially organized sphere. More than 4 percent of the global population plays football, including 270 million amateur players...
June 4, 2018: Travel Medicine and Infectious Disease
Abdul El Chafic, Ihab I El Hajj, John DeWitt, Christian M Schmidt, Ali Siddiqui, Stuart Sherman, Ashish Aggarwal, Mohammad Al-Haddad
BACKGROUND: Cyst growth of BD-IPMNs on follow-up imaging remains a concerning sign. AIMS: To describe cyst size changes over time in BD-IPMNs, and determine whether cyst growth rate is associated with increased risk of malignancy. METHODS: This is a retrospective study performed at two high volume tertiary centers. Mean cyst size at baseline (MCSB) and mean growth rate percentage (MGRP) were calculated. Rapid cyst growth was defined as MGRP ≥30%/year...
April 27, 2018: Digestive and Liver Disease
Doudou Sow, Fabiola Dogue, Sophie Edouard, Tassadit Drali, Ségolène Prades, Emilie Battery, Saber Yezli, Badriah Alotaibi, Cheikh Sokhna, Didier Raoult, Philippe Parola, Philippe Gautret
BACKGROUND: Diarrhea can be frequent among Hajj pilgrims; however, data on its etiology are very limited. PATIENTS AND METHODS: A prospective cohort study was conducted among Hajj pilgrims in 2016. Medical follow-up and systematic rectal swabing were performed before leaving France and before leaving Saudi Arabia. Potential pathogens were identified using the BioFire FilmArray® Gastrointestinal multiplex qualitative PCR panel. RESULTS: 117 pilgrims were included and 13...
May 30, 2018: Travel Medicine and Infectious Disease
Van K Ninh, Elia Ec El Hajj, Alan J Mouton, Milad C El Hajj, Nicholas W Gilpin, Jason D Gardner
BACKGROUND: Alcohol is among the most commonly abused drugs worldwide and affects many organ systems, including the heart. Alcoholic cardiomyopathy is characterized by a dilated cardiac phenotype with extensive hypertrophy and extracellular matrix (ECM) remodeling. We have previously shown that chronic ethanol administration accelerates the progression to heart failure in a rat model of volume overload. However, the mechanism by which this decompensation occurs is unknown. For this study, we hypothesized that chronic ethanol administration would prevent compensatory hypertrophy and cardiac remodeling in a rodent model of pressure overload (PO)...
May 30, 2018: Alcoholism, Clinical and Experimental Research
Kevin Byram, Rula A Hajj-Ali, Leonard Calabrese
PURPOSE OF REVIEW: The goal of this review is to provide an up-to-date approach to diagnosis and management of patients with central nervous system (CNS) vasculitis. RECENT FINDINGS: Challenges in diagnosis of CNS vasculitis still exist due to the broad differential diagnosis and generally nonspecific initial clinical manifestations. Differentiation between primary angiitis of the CNS (PACNS) and secondary causes is important in guiding management. Recent longitudinal cohort studies have improved our understanding of PACNS...
May 30, 2018: Current Rheumatology Reports
Ihab I El Hajj, John DeWitt, Stuart Sherman, Thomas F Imperiale, Julia K LeBlanc, Lee McHenry, Gregory A Cote, Cynthia S Johnson, Mohammad Al-Haddad
BACKGROUND: Treatment and prognosis of patients with rectal adenocarcinoma (RAC) are dependent on accurate locoregional staging. OBJECTIVES: The aim of this study was to measure the performance characteristics of rectal endoscopic ultrasound (EUS) compared with surgical pathology, and to assess the interobserver variation of rectal EUS in the staging of RAC. PATIENTS AND METHODS: Patients referred for rectal EUS staging of a recently diagnosed RAC were prospectively enrolled between 2012 and 2016...
May 24, 2018: European Journal of Gastroenterology & Hepatology
Anwarul Hasan, Sherif Soliman, Fatima El Hajj, Yuan-Tsan Tseng, Huseyin C Yalcin, Hany Elsayed Marei
Heart valve diseases are among the leading causes of cardiac failure around the globe. Nearly 90,000 heart valve replacements occur in the USA annually. Currently, available options for heart valve replacement include bioprosthetic and mechanical valves, both of which have severe limitations. Bioprosthetic valves can last for only 10-20 years while patients with mechanical valves always require blood-thinning medications throughout the remainder of the patient's life. Tissue engineering has emerged as a promising solution for the development of a viable, biocompatible and durable heart valve; however, a human implantable tissue engineered heart valve is yet to be achieved...
May 29, 2018: Scientific Reports
Kyle John Wilby, Maguy S El Hajj, Marwa El-Bashir, Fatima Mraiche
PROBLEM DESCRIPTION: Written assessments are essential components of higher education practices. However, faculty members encounter common pitfalls when designing questions intended to evaluate student-learning outcomes. The objective of this project was to determine the impact of a mandatory examination peer review process on question accuracy, alignment with learning objectives, use of best practices in question design, and language/grammar. QUALITY IMPROVEMENT METHODS: A mandatory peer review process was implemented for all midterm (before phase) and final (after phase) examinations...
April 2018: Currents in Pharmacy Teaching & Learning
Yangyang Li, Tengteng Zhu, Huan Yang, Sulayman Dib-Hajj, Stephen Waxman, Ye Yu, Tian-Le Xu, Xiaoyang Cheng
Voltage-gated sodium channel Nav1.7 is a key molecule in nociception, and its dysfunction has been associated with various pain disorders. Here, we investigated the regulation of Nav1.7 biophysical properties by Fyn, a Src family tyrosine kinase. Nav1.7 was coexpressed with either constitutively active (FynCA) or dominant negative (FynDN) variants of Fyn kinase. FynCA elevated protein expression and tyrosine phosphorylation of Nav1.7 channels. Site-directed mutagenesis analysis identified two tyrosine residues (Y1470 and Y1471) located within the Nav1...
January 1, 2018: Molecular Pain
Hassan Al Hajj, Mathieu Lamard, Pierre-Henri Conze, Béatrice Cochener, Gwenolé Quellec
This paper investigates the automatic monitoring of tool usage during a surgery, with potential applications in report generation, surgical training and real-time decision support. Two surgeries are considered: cataract surgery, the most common surgical procedure, and cholecystectomy, one of the most common digestive surgeries. Tool usage is monitored in videos recorded either through a microscope (cataract surgery) or an endoscope (cholecystectomy). Following state-of-the-art video analysis solutions, each frame of the video is analyzed by convolutional neural networks (CNNs) whose outputs are fed to recurrent neural networks (RNNs) in order to take temporal relationships between events into account...
May 9, 2018: Medical Image Analysis
Elia C El Hajj, Milad C El Hajj, Van K Ninh, Jason D Gardner
The cardiac extracellular matrix is a complex architectural network that serves many functions including providing structural and biochemical support to surrounding cells, and regulating intercellular signaling pathways. Cardiac function is directly affected by extracellular matrix (ECM) composition, and alterations of the ECM contribute to progression of heart failure. Initially, collagen deposition is an adaptive response that aims to preserve tissue integrity and maintain normal ventricular function. However, the synergistic effects of the pro-inflammatory and pro-fibrotic responses induce a vicious cycle which causes excess activation of myofibroblasts, significantly increasing collagen deposition and accumulation in the matrix...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
Ihab I El Hajj, Mohammad Al-Haddad
No abstract text is available yet for this article.
June 2018: Gastrointestinal Endoscopy
Saber Yezli
The Hajj and Umrah mass gatherings represent many of the risk factors for meningococcal disease and have historically been associated with both local and international outbreaks of the disease. The implementation of strict preventative measures including mandatory meningococcal vaccination with the quadrivalent (A,C,Y,W) vaccine has prevented pilgrimage-associated meningococcal outbreaks and significantly reduced the incidence of the disease at these events. However, meningococcal disease remains an important public health threat at the Hajj and Umrah due in part to the evolving nature of the disease, characterized with diverse and varying geographic trends, fluctuations in incidence and shifts in serogroups and genotypes...
May 8, 2018: Travel Medicine and Infectious Disease
Ihab I El Hajj, Marshall McCabe, DuyKhanh P Ceppa, Jonathan A Fridell, Stuart Sherman
Tension gastrothorax is a rare condition, which poses a diagnostic dilemma and can be mistaken for a tension pneumothorax. Awareness of the risk factors, clinical presentation, and radiology findings of tension gastrothorax can help with the prompt identification and successful management of this life-threatening condition.
May 2018: Clinical Case Reports
Abdullah M Assiri, Sari I Asiri, Talib Banassir, Mustafa J Baljoon, Hani Jokhdar
[No Abstract Available].
May 2018: Saudi Medical Journal
Aaron B Simmons, Colin A Bretz, Haibo Wang, Eric Kunz, Kassem Hajj, Carson Kennedy, Zhihong Yang, Thipparat Suwanmanee, Tal Kafri, M Elizabeth Hartnett
Inhibition of vascular endothelial growth factor (VEGF) in retinopathy of prematurity (ROP) raises concerns for premature infants because VEGF is essential for retinovascular development as well as neuronal and glial health. This study tested the hypothesis that endothelial cell-specific knockdown of VEGF receptor 2 (VEGFR2), or downstream STAT3, would inhibit VEGF-induced retinopathy without delaying physiologic retinal vascular development. We developed an endothelial cell-specific lentiviral vector that delivered shRNAs to VEGFR2 or STAT3 and a green fluorescent protein reporter under control of the VE-cadherin promoter...
May 5, 2018: Angiogenesis
Michael R Wilson, Brian D O'Donovan, Jeffrey M Gelfand, Hannah A Sample, Felicia C Chow, John P Betjemann, Maulik P Shah, Megan B Richie, Mark P Gorman, Rula A Hajj-Ali, Leonard H Calabrese, Kelsey C Zorn, Eric D Chow, John E Greenlee, Jonathan H Blum, Gary Green, Lillian M Khan, Debarko Banerji, Charles Langelier, Chloe Bryson-Cahn, Whitney Harrington, Jairam R Lingappa, Niraj M Shanbhag, Ari J Green, Bruce J Brew, Ariane Soldatos, Luke Strnad, Sarah B Doernberg, Cheryl A Jay, Vanja Douglas, S Andrew Josephson, Joseph L DeRisi
Importance: Identifying infectious causes of subacute or chronic meningitis can be challenging. Enhanced, unbiased diagnostic approaches are needed. Objective: To present a case series of patients with diagnostically challenging subacute or chronic meningitis using metagenomic next-generation sequencing (mNGS) of cerebrospinal fluid (CSF) supported by a statistical framework generated from mNGS of control samples from the environment and from patients who were noninfectious...
April 16, 2018: JAMA Neurology
Carla Hajj, Nakhle Ayoub
No abstract text is available yet for this article.
June 1, 2018: JAMA Dermatology
Wissam Georges El Hajj Moussa, Rebecca Georges Farhat, Joseph Claud Nehme, Marwan Antoun Sahyoun, Alexandre Raymond Schakal, Alexandre Edmond Jalkh, Mariana Pierre Abi Karam, Georges Georges Azar
Aim: The purpose of this study is to evaluate and compare the efficacy of 4 prostaglandin analogues (PGAs) and to determine the incidence of ocular surface disease in newly diagnosed, primary open-angle glaucoma (POAG) patients started on one of those 4 PGAs: bimatoprost (benzalkonium chloride, BAK, 0.3 mg/mL), latanoprost (BAK 0.2 mg/mL), travoprost (polyquad), and tafluprost (BAK-free). Patients and Methods: In this single-center, open-label trial, 32 patients newly diagnosed with POAG were randomly started on one of the four PGAs...
2018: Journal of Ophthalmology
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