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Kevin J McHugh, Lihong Jing, Adam M Behrens, Surangi Jayawardena, Wen Tang, Mingyuan Gao, Robert Langer, Ana Jaklenec
Approximately 1.7 million new cases of cancer will be diagnosed this year in the United States leading to 600 000 deaths. Patient survival rates are highly correlated with the stage of cancer diagnosis, with localized and regional remission rates that are much higher than for metastatic cancer. The current standard of care for many solid tumors includes imaging and biopsy with histological assessment. In many cases, after tomographical imaging modalities have identified abnormal morphology consistent with cancer, surgery is performed to remove the primary tumor and evaluate the surrounding lymph nodes...
February 22, 2018: Advanced Materials
Anoop Kumar, Ishita Chatterjee, Arivarasu N Anbazhagan, Dulari Jayawardena, Shubha Priyamvada, Waddah A Alrefai, Jun Sun, Alip Borthakur, Pradeep K Dudeja
Infection with the protozoan parasite Cryptosporidium parvum (CP) causes cryptosporidiosis, a widespread diarrheal disease. Impaired intestinal epithelial barrier function and increased permeability are most commonly associated with diarrheal diseases caused by enteric infections. However, studies on barrier disruption and underlying mechanisms in cryptosporidiosis are extremely limited. Epithelial tight junctions (TJ) and adherens junctions (AJ) are important in maintaining barrier integrity. Therefore, we examined the effects of CP infection on paracellular permeability and on the expression of the major TJ and AJ proteins utilizing in vitro, ex vivo, and in vivo models...
February 14, 2018: Cellular Microbiology
Priyesh N Patel, Asitha D L Jayawardena, Rachel L Walden, Edward B Penn, David O Francis
Objective To identify and clarify current evidence supporting and disputing the effectiveness of perioperative antibiotic use for common otolaryngology procedures. Data Sources PubMed, Embase (OVID), and CINAHL (EBSCO). Review Methods English-language, original research (systematic reviews/meta-analyses, randomized control trials, prospective or retrospective cohort studies, case-control studies, or case series) studies that evaluated the role of perioperative antibiotic use in common otolaryngology surgeries were systematically extracted using standardized search criteria by 2 investigators independently...
January 1, 2018: Otolaryngology—Head and Neck Surgery
Nisansala Swarnamali Bopage, G M Kamal Bandara Gunaherath, Kithsiri Hector Jayawardena, Sushila Chandrani Wijeyaratne, Ajita Mahendra Abeysekera, Seneviratne Somaratne
BACKGROUND: Different parts including the latex of Ficus racemosa L. has been used as a medicine for wound healing in the Ayurveda and in the indigenous system of medicine in Sri Lanka. This plant has been evaluated for its wound healing potential using animal models. The aim of this study was to obtain an insight into the wound healing process and identify the potential wound healing active substance/s present in F. racemosa L. bark using scratch wound assay (SWA) as the in-vitro assay method...
January 25, 2018: BMC Complementary and Alternative Medicine
Steven F Weinstein, Rohit Katial, Shyamalie Jayawardena, Gianluca Pirozzi, Heribert Staudinger, Laurent Eckert, Vijay N Joish, Nikhil Amin, Jaman Maroni, Paul Rowe, Neil M H Graham, Ariel Teper
BACKGROUND: Dupilumab, an anti-IL-4Rα monoclonal antibody, inhibits IL-4/IL-13 signaling, key drivers of type 2/Th2 immune diseases (e.g. atopic/allergic disease). In a pivotal, phase 2b study (NCT01854047), dupilumab reduced severe exacerbations, improved lung function and quality of life, and was generally well tolerated in patients with uncontrolled persistent asthma despite using medium-to-high-dose inhaled corticosteroids plus long-acting β2-agonists. OBJECTIVE: To examine dupilumab's effect on the 22-item Sino-Nasal Outcome Test (SNOT-22) total score and its allergic rhinitis (AR)-associated items in asthma patients with comorbid perennial allergic rhinitis (PAR)...
January 17, 2018: Journal of Allergy and Clinical Immunology
Asitha D L Jayawardena, Rakesh Chandra
"Sinus headache" is a common chief complaint that often leads patients to an otolaryngologist's office. Because facial pain may or may not be sinogenic in origin, the otolaryngologist should be equipped to evaluate and treat or to appropriately refer these patients. Analysis of current data indicates that the majority of patients who present with sinus headaches actually have migraines. Furthermore, the downstream effect of the cytokine cascade initiated in migraine physiology can cause rhinologic symptoms, including rhinorrhea, congestion, and lacrimation, which may also confound diagnosis...
January 1, 2018: American Journal of Rhinology & Allergy
Priyanga Ranasinghe, Ranil Jayawardena, Shehani Pigera, Wasundara Sevwandi Wathurapatha, Hasitha Dhananjaya Weeratunga, G A Sirimal Premakumara, Prasad Katulanda, Godwin Roger Constantine, Priyadarshani Galappaththy
BACKGROUND: Cinnamon is considered as a treatment for many ailments in native medicine. Evidence suggests that Cinnamomum zeylanicum (CZ) has anti-microbial, anti-parasitic, anti-oxidant, blood glucose lowering properties and beneficial cardiovascular effects. The present study aims to evaluate Pharmacodynamic properties and safety of CZ in healthy adults using a Phase I Clinical Trial. METHODS: This phase I clinical trial was conducted at the Department of Pharmacology, Faculty of Medicine, University of Colombo, Sri Lanka...
December 28, 2017: BMC Complementary and Alternative Medicine
Evandro Castaldelli, K D G Imalka Jayawardena, David C Cox, Guy J Clarkson, Richard I Walton, Long Le-Quang, Jerôme Chauvin, S Ravi P Silva, Grégoire Jean-François Demets
Metal-organic frameworks (MOFs) have emerged as an exciting class of porous materials that can be structurally designed by choosing particular components according to desired applications. Despite the wide interest in and many potential applications of MOFs, such as in gas storage, catalysis, sensing and drug delivery, electrical semiconductivity and its control is still rare. The use and fabrication of electronic devices with MOF-based components has not been widely explored, despite significant progress of these components made in recent years...
December 15, 2017: Nature Communications
Meriem Amarouche, Jonathan J Neville, Simon Deacon, Nida Kalyal, Nikita Adams, Beverly Cheserem, Daniel Curley, Ruth-Mary DeSouza, Fehmi Hafiz, Tanya Jayawardena, Nishi Khetani, Diana Matthews, Sophie Mustoe, Sabrina Okafor, Olivia Padfield, Ishani Rao, Reem Samir, Hyder Tahir, Benjamin Varghese, Christos Michael Tolias
OBJECTIVES: There is an increased reliance on online referral systems (ORS) within neurosurgical departments across the UK. Opinions of neurosurgeons on ORS are extensively reported but those of referrers have hardly been sought. Our study aims at ascertaining our referring colleagues' views on our ORS and its impact on patient care, their opinions on neurosurgeons and how to improve our referral process. SETTING: 14 district general hospitals and one teaching hospital...
November 26, 2017: BMJ Open
Dianne Tania Dayanthi Warnakulasuriya, Pattiya Pathirennahalage Uddika Chamila Peries, Yaddehi Arachchillage Chaminda Rathnasekara, KaluArachchige Thushari Madurika Jayawardena, Angappulige Upasena, Anada Rajitha Wickremasinghe
BACKGROUND: Liver, spleen and kidney dimensions on ultrasonography vary with the age, weight and ethnicity. Reference standards of these parameters for normal Sri Lankan children are not available. Our aim was to establish normative data for longitudinal length of liver, spleen and kidneys in healthy children. METHOD: Three hundred fifty-seven children, 5-13 years of age were selected from two randomly selected schools in the Gampaha district in the western province of Sri Lanka...
November 16, 2017: BMC Pediatrics
Sudam Pathirana, Shyamalie Jayawardena, Suzanne Meeves, Gary A Thompson
Two pediatric studies characterized brompheniramine and chlorpheniramine pharmacokinetics in a total of 72 subjects, aged 2 to 17 years. A single age-/weight-based oral dose, ranging from 1 to 4 mg, was administered with 2 to 6 oz of water at least 2 hours after a light breakfast. Plasma samples were obtained before and for 72 hours after dosing and analyzed using high-pressure liquid chromatography-tandem mass spectrometry. Pharmacokinetic parameters were estimated using noncompartmental methods; relationships with age were assessed using linear regression...
November 14, 2017: Journal of Clinical Pharmacology
Priyanga Ranasinghe, Wasundara Sevwandi Wathurapatha, Priyadarshani Galappatthy, Prasad Katulanda, Ranil Jayawardena, Godwin Roger Constantine
BACKGROUND: To evaluate the effects of Zinc supplementation on glycaemic control, other cadio-metabolic/anthropometric parameters and progression of disease in pre-diabetes. METHODS: The clinical trial was conducted as a randomized, double-blind, placebo-controlled Phase II clinical trial for a period of 12 months. The treatment group received Zinc (20mg daily). A total of 200 subjects with pre-diabetes were recruited for the study and randomly assigned into the treatment and control groups (1:1)...
October 26, 2017: Journal of Diabetes
Indre Ceponiene, Rine Nakanishi, Kazuhiro Osawa, Mitsuru Kanisawa, Negin Nezarat, Sina Rahmani, Kendall Kissel, Michael Kim, Eranthi Jayawardena, Alexander Broersen, Pieter Kitslaar, Matthew J Budoff
OBJECTIVES: The aim of this study was to determine whether coronary artery calcium (CAC) progression was associated with coronary plaque progression on coronary computed tomographic angiography. BACKGROUND: CAC progression and coronary plaque characteristics are associated with incident coronary heart disease. However, natural history of coronary atherosclerosis has not been well described to date, and the understanding of the association between CAC progression and coronary plaque subtypes such as noncalcified plaque progression remains unclear...
October 14, 2017: JACC. Cardiovascular Imaging
Ji Ye Yan, Wen Sheng Zhao, Zhen Chen, Qi Kai Xing, Wei Zhang, K W Thilini Chethana, Min Feng Xue, Jian Ping Xu, Alan J L Phillips, Yong Wang, Jian Hua Liu, Mei Liu, Ying Zhou, Ruvishika S Jayawardena, Ishara S Manawasinghe, Jin Bao Huang, Guang Hang Qiao, Chun Yuan Fu, Fei Fei Guo, Asha J Dissanayake, You Liang Peng, Kevin D Hyde, Xing Hong Li
Botryosphaeriaceae are an important fungal family that cause woody plant diseases worldwide. Recent studies have established a correlation between environmental factors and disease expression; however, less is known about factors that trigger these diseases. The current study reports on the 43.3 Mb de novo genome of Lasiodiplodia theobromae and five other genomes of Botryosphaeriaceae pathogens. Botryosphaeriaceous genomes showed an expansion of gene families associated with cell wall degradation, nutrient uptake, secondary metabolism and membrane transport, which contribute to adaptations for wood degradation...
October 3, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
Dulari Jayawardena, Arivarasu N Anbazhagan, Grace Guzman, Pradeep K Dudeja, Hayat Onyuksel
Inflammatory bowel disease (IBD) is a chronic relapsing disorder of the intestine, with increasing incidence worldwide. At present, the management of IBD is an unmet medical need due to the ineffectiveness of currently available drugs in treating all patients, and there is strong demand for novel therapeutics. In this regard, vasoactive intestinal peptide, a potent anti-inflammatory endogenous hormone, has shown promise in managing multiple immune disorders in animal models. However, when administered in the free form, VIP undergoes rapid degradation in vivo, and with continuous infusion, it causes severe dose limiting side effects...
November 6, 2017: Molecular Pharmaceutics
Priyanga Ranasinghe, Priyadarshani Galappaththy, Godwin Roger Constantine, Ranil Jayawardena, Hasitha Dhananjaya Weeratunga, Sirimal Premakumara, Prasad Katulanda
BACKGROUND: Previous studies have explored the anti-diabetic effects of Cinnamomum cassia extract in vivo and in vitro. However, there are no studies at present exploring the effects of the indigenous species of Sri Lankan cinnamon (Cinnamomum zeylanicum) in patients with diabetes mellitus. The present study aims to evaluate the potential effects of Cinnamomum zeylanicum extract as a pharmaceutical agent in patients with type-2 diabetes mellitus. METHODS/DESIGN: The study will be conducted as a randomized, double-blind, placebo-controlled clinical trial for a period of 4 months at the Medical Clinic, University Medical Unit, National Hospital of Sri Lanka...
September 29, 2017: Trials
Devika P Jayawardena, Ilka U Heinemann, Martin J Stillman
Maintenance of the homeostasis of zinc is very important in regulating bodily functions. There are over 300 Zn-dependent enzymes identified where Zn(II) plays a structural or catalytic role. However, an excess of Zn(II) in a cell is toxic and free Zn(II) is tightly controlled. Metallothioneins (MTs) are small cysteine rich proteins that can bind up to seven Zn(II) and act as a Zn(II) reservoir. The MT2a isoform is predominantly found in the liver. This study focused on designing an MT2a construct of recombinant human MT2a to determine the Zn(II) binding profile of MT2a in vitro...
November 4, 2017: Biochemical and Biophysical Research Communications
Rine Nakanishi, Wendy S Post, Kazuhiro Osawa, Eranthi Jayawardena, Michael Kim, Nasim Sheidaee, Negin Nezarat, Sina Rahmani, Nicholas Kim, Nicolai Hathiramani, Shriraj Susarla, Frank Palella, Mallory Witt, Michael J Blaha, Todd T Brown, Lawrence Kingsley, Sabina A Haberlen, Christopher Dailing, Matthew J Budoff
BACKGROUND AND AIM: The association of HIV with coronary atherosclerosis has been established; however, the progression of coronary atherosclerosis over time among participants with HIV is not well known. The Multicenter AIDS Cohort Study Quantitative Coronary Plaque Progression Study is a large prospective multicenter study quantifying progression of coronary plaque assessed by serial coronary computed tomography angiography (CTA). PATIENTS AND METHODS: HIV-infected and uninfected men who were enrolled in the Multicenter AIDS Cohort Study Cardiovascular Substudy were eligible to complete a follow-up contrast coronary CTA 3-6 years after baseline...
January 2018: Coronary Artery Disease
Ranil Jayawardena, Pasindu Fernando, Niroshan Lokunarangoda, Anidu Keerthi Pathirana
BACKGROUND: Cardiovascular disease remains the leading cause of morbidity and mortality worldwide, and there is a rising global burden. The effects of diet on cardiometabolic risk factors have been studied extensively. Healthy eating as a cost-effective approach to risk reduction in post-myocardial infarction patients is proven to be beneficial, and the "plate model" is one of the practical methods to achieve this objective. METHODS/DESIGN: The study will be conducted as a randomized, single-blind, controlled clinical trial for a period of 3 months...
July 10, 2017: Trials
Y Marin-Felix, J Z Groenewald, L Cai, Q Chen, S Marincowitz, I Barnes, K Bensch, U Braun, E Camporesi, U Damm, Z W de Beer, A Dissanayake, J Edwards, A Giraldo, M Hernández-Restrepo, K D Hyde, R S Jayawardena, L Lombard, J Luangsa-Ard, A R McTaggart, A Y Rossman, M Sandoval-Denis, M Shen, R G Shivas, Y P Tan, E J van der Linde, M J Wingfield, A R Wood, J Q Zhang, Y Zhang, P W Crous
Genera of Phytopathogenic Fungi (GOPHY) is introduced as a new series of publications in order to provide a stable platform for the taxonomy of phytopathogenic fungi. This first paper focuses on 21 genera of phytopathogenic fungi: Bipolaris, Boeremia, Calonectria, Ceratocystis, Cladosporium, Colletotrichum, Coniella, Curvularia, Monilinia, Neofabraea, Neofusicoccum, Pilidium, Pleiochaeta, Plenodomus, Protostegia, Pseudopyricularia, Puccinia, Saccharata, Thyrostroma, Venturia and Wilsonomyces. For each genus, a morphological description and information about its pathology, distribution, hosts and disease symptoms are provided...
March 2017: Studies in Mycology
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