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https://www.readbyqxmd.com/read/28536383/design-synthesis-and-biochemical-evaluation-of-novel-selective-estrogen-receptor-ligand-conjugates-incorporating-an-endoxifen-combretastatin-hybrid-scaffold
#1
Niall O Keely, Miriam Carr, Bassem Yassin, Gloria Ana, David G Lloyd, Daniela Zisterer, Mary J Meegan
Nuclear-receptors are often overexpressed in tumours and can thereby be used as targets when designing novel selective chemotherapeutic agents. To date, many conjugates incorporating an estrogen receptor (ER) ligand have been synthesised in order to direct chemical agents to tissue sites containing ERs. A series of ER ligand conjugates were synthesised incorporating an antagonistic ER ligand scaffold based on endoxifen, covalently-bound via an amide linkage to a variety of combretastatin-based analogues, which may act as antimitotic agents...
July 20, 2016: Biomedicines
https://www.readbyqxmd.com/read/28469422/seroprevalence-of-asymptomatic-dengue-virus-infection-and-its-antibodies-among-healthy-eligible-saudi-blood-donors-findings-from-holy-makkah-city
#2
Ahmed M Ashshi, Saad Alghamdi, Adel G El-Shemi, Sabir Almdani, Bassem Refaat, Amr M Mohamed, Hani O Ghazi, Esam I Azhar, Faisal A Al-Allaf
BACKGROUND: Threat to blood transfusion-transmitted dengue virus (DENV) and its antibodies has recently emerged worldwide. Dengue fever is an endemic disease in Saudi Arabia, particularly in its Western region. The aim of this study was to estimate the seroprevalence of asymptomatic DENV infection and its antibodies among eligible Saudi blood donors. METHODS: Serum samples from 910 healthy/eligible adult male Saudi blood donors, who reside in Holy Makkah City of Saudi Arabia, were collected between March 2015 and August 2016 and screened for the detection of DENV nonstructural protein 1 (NS1) antigen and anti-DENV IgM and IgG antibodies using commercial enzyme-linked immunosorbent assay kits (Panbio, Brisbane, QLD, Australia)...
2017: Virology: Research and Treatment
https://www.readbyqxmd.com/read/28455802/gastroesophageal-reflux-disease-after-laparoscopic-sleeve-gastrectomy-with-concomitant-hiatal-hernia-repair-an-unresolved-question
#3
Hanaa Dakour Aridi, Mohammad Asali, Tarek Fouani, Ramzi S Alami, Bassem Y Safadi
PURPOSE: The effectiveness of the concomitant repair of hiatal hernia (HHR) during laparoscopic sleeve gastrectomy (LSG) in reducing gastroesophageal reflux disease (GERD) symptoms is still unclear. The aim of this study is to assess the effect of concomitant HHR on postoperative GERD symptoms in our patient population. MATERIALS AND METHODS: A retrospective review of patients who underwent LSG with or without HHR between 2011and 2014 was performed. Pre- and postoperative GERD symptoms were assessed at different time intervals until a maximum of 2 years after the surgery...
April 28, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28442411/evaluation-of-the-bioactive-extract-of-actinomyces-isolated-from-the-egyptian-environment-against-aflatoxin-b1-induce-cytotoxicity-genotoxicity-and-oxidative-stress-in-the-liver-of-rats
#4
Aziza A El-Nekeety, Asmaa S Salman, Amal S Hathout, Bassem A Sabry, Sekena H Abdel-Aziem, Nabila S Hassan, Mosaad A Abdel-Wahhab
This study aimed to determine the bioactive compounds of actinomyces (ACT) isolated from the Egyptian environment (D-EGY) and to evaluate their protective activity against AFB1 in female Sprague-Dawley rats. Six groups of animals were treated orally for 3 weeks included: C, the control group, T1, AFB1-treated group (80 μg/kg b.w), T2 and T3, the groups received ACT extract at low (25 mg/kg b.w) or high (50 mg/kg b.w) doses, T4 and T5, the groups received AFB1 plus the low or high dose of ACT extract. Blood, bone marrow and tissue samples were collected for different analyses and histological examination...
April 23, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28436881/modulating-lateral-geniculate-nucleus-neuronal-firing-for-visual-prostheses-a-kalman-filter-based-strategy
#5
Amr Jawwad, Hossam H Abolfotuh, Bassem Abdullah, Hani M K Mahdi, Seif Eldawlatly
Developing visual prostheses that target inner brain structures along the visual pathway represent a new hope for patients with completely damaged early visual pathway sites. One of the major challenges in the development of subcortical and cortical visual prostheses is tuning electrical stimulation that could optimally induce desired visual percepts. In this paper, we propose a Kalman filter-based strategy that could be used to identify electrical stimulation patterns that mimic a specific visual input for thalamic visual prostheses...
April 17, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28420381/operations-research-in-global-health-a-scoping-review-with-a-focus-on-the-themes-of-health-equity-and-impact
#6
REVIEW
Beverly D Bradley, Tiffany Jung, Ananya Tandon-Verma, Bassem Khoury, Timothy C Y Chan, Yu-Ling Cheng
BACKGROUND: Operations research (OR) is a discipline that uses advanced analytical methods (e.g. simulation, optimisation, decision analysis) to better understand complex systems and aid in decision-making. Herein, we present a scoping review of the use of OR to analyse issues in global health, with an emphasis on health equity and research impact. A systematic search of five databases was designed to identify relevant published literature. A global overview of 1099 studies highlights the geographic distribution of OR and common OR methods used...
April 18, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/28410937/proximal-row-carpectomy-and-4-corner-arthrodesis-in-patients-younger-than-age%C3%A2-45-years
#7
Eric R Wagner, Jean-David Werthel, Bassem T Elhassan, Steven L Moran
PURPOSE: To examine the long-term outcome of patients aged less than 45 years who underwent either proximal row carpectomy (PRC) or 4-corner arthrodesis (4CA) for wrist arthritis. METHODS: We reviewed a retrospective cohort of 89 patients aged less than 45 years who underwent either 4CA (n = 51) or PRC (n = 38) for wrist arthritis. Mean follow-up was 11 years in the 4CA group and 18 years in the PRC group. RESULTS: Overall, there were no differences between groups in the need for revision surgery...
April 12, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28406397/evolutionary-changes-in-transcription-factor-coding-sequence-quantitatively-alter-sensory-organ-development-and-function
#8
Simon Weinberger, Matthew P Topping, Jiekun Yan, Annelies Claeys, Natalie De Geest, Duru Ozbay, Talah Hassan, Xiaoli He, Joerg T Albert, Bassem A Hassan, Ariane Ramaekers
Animals are characterized by a set of highly conserved developmental regulators. Changes in the cis-regulatory elements of these regulators are thought to constitute the major driver of morphological evolution. However, the role of coding sequence evolution remains unresolved. To address this question, we used the Atonal family of proneural transcription factors as a model. Drosophila atonal coding sequence was endogenously replaced with that of atonal homologues (ATHs) at key phylogenetic positions, non-ATH proneural genes, and the closest homologue to ancestral proneural genes...
April 13, 2017: ELife
https://www.readbyqxmd.com/read/28395994/thujone-inhibits-the-function-of-%C3%AE-7-nicotinic-acetylcholine-receptors-and-impairs-nicotine-induced-memory-enhancement-in-one-trial-passive-avoidance-paradigm
#9
Ahmed Sultan, Keun-Hang Susan Yang, Dmitro Isaev, Eslam El Nebrisi, Nurulain Syed, Nadia Khan, Christopher F Howarth, Bassem Sadek, Murat Oz
Effects of thujone, a major ingredient of absinthe, wormwood oil and some herbal medicines, were tested on the function of α7 subunit of the human nicotinic acetylcholine (α7 nACh) receptor expressed in Xenopus oocytes using the two-electrode voltage-clamp technique. Thujone reversibly inhibited ACh (100μM)-induced currents with an IC50 value of 24.7μM. The effect of thujone was not dependent on the membrane potential and did not involve Ca(2+)-dependent Cl(-) channels expressed endogenously in oocytes...
April 7, 2017: Toxicology
https://www.readbyqxmd.com/read/28391740/catastrophic-relapses-following-initiation-of-dimethyl-fumarate-in-two-patients-with-neuromyelitis-optica-spectrum-disorder
#10
Bassem I Yamout, Shawkat Beaini, Maya M Zeineddine, Nabil Akkawi
We report two cases of neuromyelitis optica spectrum disorder (NMOSD) who were misdiagnosed as multiple sclerosis (MS) and developed catastrophic relapses following initiation of dimethyl fumarate. Both patients developed a severe myelitis extending from the cervical cord to the medulla with significant cord swelling, resulting in complete quadriplegia and respiratory difficulties, in addition to severe bilateral visual loss in one patient. It is of note that both catastrophic relapses occurred 2 and 3 months following initiation of dimethyl fumarate...
April 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28389324/comparing-the-incidence-of-bone-tumors-in-rats-chronically-exposed%C3%A2-to-the-selective-pth-type-1-receptor-agonist-abaloparatide%C3%A2-or%C3%A2-pth-1-34
#11
Jacquelin Jolette, Bassem Attalla, Aurore Varela, Gerald G Long, Nacera Mellal, Sabile Trimm, Susan Y Smith, Michael S Ominsky, Gary Hattersley
Prolonged treatment with human parathyroid hormone (hPTH) in rats results in development of bone tumors, though this finding has not been supported by clinical experience. The PTH type 1 receptor agonist abaloparatide, selected for its bone anabolic activity, is under clinical development to treat postmenopausal women with osteoporosis. To determine the carcinogenic potential of abaloparatide, Fischer (F344) rats were administered SC daily abaloparatide at doses of 0, 10, 25, and 50 μg/kg or 30 μg/kg hPTH(1-34) as a positive control for up to 2 years...
April 4, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28387846/improving-diabetes-related-parent-adolescent-communication-with-individualized-feedback
#12
Dana K K May, Deborah A Ellis, Annmarie Cano, Bassem Dekelbab
To pilot a brief individualized feedback intervention to improve the communication skills of parents with an adolescent with type 1 diabetes.  Parent-adolescent dyads ( N  = 79) discussed a diabetes-related problem, while an interventionist rated the parent's communication skills to give feedback to the parents. Parents were then randomized to a brief feedback session to target person-centered communication skills or an educational session. Dyads discussed another diabetes care problem to assess for change in communication skills...
April 6, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/28385727/multicenter-clinical-and-imaging-evaluation-of-targeted-radiofrequency-ablation-t-rfa-and-cement-augmentation-of-neoplastic-vertebral-lesions
#13
Melinda Reyes, Mark Georgy, Lorenzo Brook, Orlando Ortiz, Allan Brook, Vikas Agarwal, Mario Muto, Luigi Manfre, Stefano Marcia, Bassem A Georgy
BACKGROUND: Treatment of spinal metastatic lesions by radiofrequency ablation (RFA) before cementation can potentially help in local tumor control and pain relief. This is often limited by access and tumor location. This study reports multicenter clinical and imaging outcomes following targeted RFA (t-RFA) and cement augmentation in neoplastic lesions of the spine. MATERIAL AND METHODS: A retrospective multicenter study of 49 patients with 72 painful vertebral lesions, evaluated for clinical and imaging outcomes following RFA and cement augmentation of spinal metastatic lesions, was undertaken...
April 6, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28378747/hpv-positive-neuroendocrine-cervical-cancer-cells-are-dependent-on-myc-but-not-e6-e7-viral-oncogenes
#14
Hang Yuan, Ewa Krawczyk, Jan Blancato, Christopher Albanese, Dan Zhou, Naidong Wang, Siddartha Paul, Faris Alkhilaiwi, Nancy Palechor-Ceron, Aleksandra Dakic, Shuang Fang, Sujata Choudhary, Tung-Wei Hou, Yun-Ling Zheng, Bassem R Haddad, Yukari Usuda, Dan Hartmann, David Symer, Maura Gillison, Seema Agarwal, Danny Wangsa, Thomas Ried, Xuefeng Liu, Richard Schlegel
Using conditional cell reprogramming, we generated a stable cell culture of an extremely rare and aggressive neuroendocrine cervical cancer. The cultured cells contained HPV-16, formed colonies in soft agar and rapidly produced tumors in immunodeficient mice. The HPV-16 genome was integrated adjacent to the Myc gene, both of which were amplified 40-fold. Analysis of RNA transcripts detected fusion of the HPV/Myc genes, arising from apparent microhomologous recombination. Spectral karyotyping (SKY) and fluorescent-in-situ hybridization (FISH) demonstrated coordinate localization and translocation of the amplified Myc and HPV genes on chromosomes 8 and 21...
April 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28374837/effect-of-vitamin-d-replacement-on-cognition-in-multiple-sclerosis-patients
#15
Hala Darwish, Ribal Haddad, Sahar Osman, Stephanie Ghassan, Bassem Yamout, Hani Tamim, Samia Khoury
Multiple Sclerosis is associated with deficient serum 25 hydroxyvitamin D (25 (OH)D) level and cognitive impairment. The aim of this study is to evaluate cognitive performance in MS patients with deficient 25 (OH)D (<25 ng/ml) compared to patients with sufficient levels (>35 ng/ml), then to evaluate the change in cognitive performance after 3 months of vitamin D3 oral replacement. Eighty-eight MS patients with relapsing remitting and clinically isolated type of MS, older than 18 years treated with interferon beta were enrolled...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28366741/reduced-lateral-inhibition-impairs-olfactory-computations-and-behaviors-in-a-drosophila-model-of-fragile-x-syndrome
#16
Luis M Franco, Zeynep Okray, Gerit A Linneweber, Bassem A Hassan, Emre Yaksi
Fragile X syndrome (FXS) patients present neuronal alterations that lead to severe intellectual disability, but the underlying neuronal circuit mechanisms are poorly understood. An emerging hypothesis postulates that reduced GABAergic inhibition of excitatory neurons is a key component in the pathophysiology of FXS. Here, we directly test this idea in a FXS Drosophila model. We show that FXS flies exhibit strongly impaired olfactory behaviors. In line with this, olfactory representations are less odor specific due to broader response tuning of excitatory projection neurons...
April 24, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28365401/reverse-shoulder-arthroplasty-in-patients-with-amputation-or-paralysis-of-the-contralateral-upper-extremity-one-arm-patients
#17
Eduard Alentorn-Geli, Nathan R Wanderman, Andrew T Assenmacher, Bassem T Elhassan, Joaquín Sánchez-Sotelo, Robert H Cofield, John W Sperling
BACKGROUND: Theoretically, patients with only one functional arm secondary to contralateral amputation or paralysis will subject their only functional upper extremity to increased loads. This could become an issue after reverse shoulder arthroplasty (RSA). However, there are no reported data on the implant survival or function for patients with a nonfunctional contralateral upper extremity. OBJECTIVE: To report the outcomes of RSA in patients with contralateral upper extremity amputation or paralysis...
March 29, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28363847/ridge-augmentation-with-titanium-mesh-a-case-report
#18
H Jegham, R Masmoudi, H Ouertani, I Blouza, S Turki, M B Khattech
Insufficient bone volume for dental implant placement in the maxillary anterior segment is a constant challenge in oral surgery. Several techniques have been suggested to reconstruct deficient alveolar ridges and to facilitate dental implant placement. These techniques include bone splitting osteotomy, distraction osteogenesis, inlay and onlay bone grafting. Guided bone regeneration (GBR) is also a promising alternative that increases the bone volume by the use of a subperiosteal barrier. AIM: The aim of this case was to demonstrate that the use of rigid titanium occlusive barrier is a reliable alternative to perform a lateral alveolar bone augmentation and treat localized ridge deformities before reaching an ideal implant placement...
March 28, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28359699/the-role-age-plays-in-the-outcomes-and-complications-of-shoulder-arthroplasty
#19
Eric R Wagner, Matthew T Houdek, Cathy Schleck, William S Harmsen, Joaquin Sánchez-Sotelo, Robert Cofield, Bassem T Elhassan, John W Sperling
BACKGROUND: This investigation used age as a continuous variable to estimate implant survival and the risk of complications. METHODS: Prospectively collected data were used to analyze 5494 consecutive shoulder arthroplasties performed from 1970 to 2012. Patients were a mean age of 67 years. The association between the age at the index procedure and the risk for each outcome was assessed using Cox regression and smoothing spline analysis. RESULTS: Older age was associated with a decreased risk of revision surgery, revision for mechanical failure, and reoperation but with a higher risk for thromboembolic events...
March 27, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28347329/incidence-and-burden-of-comorbid-pain-and-depression-in-patients-with-chronic-rhinosinusitis-awaiting-endoscopic-sinus-surgery-in-canada
#20
Bassem M N Hanna, R Trafford Crump, Guiping Liu, Jason M Sutherland, Arif S Janjua
BACKGROUND: This study sheds important light on the association between sino-nasal symptoms and global quality of life in patients with chronic rhinosinusitis waiting for endoscopic sinus surgery. Using patient-reported information collected pre-operatively, the primary objective was to report on patients' pre-surgical sino-nasal symptoms and their association with self-reported pain and depression. The secondary objective was to report on levels of depression and pain among patients in the sample reporting severe sleep problems...
March 27, 2017: Journal of Otolaryngology—Head & Neck Surgery
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