keyword
MENU ▼
Read by QxMD icon Read
search

Antimalarial drug

keyword
https://www.readbyqxmd.com/read/28421999/use-and-withdrawal-of-immunosuppressors-in-primary-sj%C3%A3-gren-s-syndrome
#1
Jiram Torres-Ruiz, David Faz-Muñoz, Nora Hernández-Díaz, Gabriela Hernandez-Molina
OBJECTIVES: To assess the use and causes of withdrawal of glucocorticoids and immunosuppressors among patients with primary Sjögren's syndrome (pSS) in the clinical setting. METHODS: We retrospectively reviewed the medical records of 155 pSS patients and registered demographics, glandular/extraglandular features, serological data, cumulative ESSDAI and SSDDI. A single rheumatologist attributed the indication and cause of withdrawal of glucocorticoids and immunosuppressors...
April 18, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28400951/contribution-of-community-health-workers-to-improving-access-to-timely-and-appropriate-case-management-of-childhood-fever-in-mozambique
#2
Tanya Guenther, Salim Sadruddin, Karen Finnegan, Erica Wetzler, Fatima Ibo, Paulo Rapaz, Jeanne Koepsell, Ibad Ul Haque Khan, Agbessi Amouzou
BACKGROUND: Large scale evaluations in several settings have demonstrated that lay community health workers can be trained to provide quality case management of childhood illnesses. In 2010, Mozambique introduced the integrated community case management (iCCM) strategy to reach children in remote areas with care provided through Agentes Polivalentes Elementares (APEs). We assessed the contribution of the program to improved care-seeking and appropriate treatment of childhood febrile illness in Nampula Province...
June 2017: Journal of Global Health
https://www.readbyqxmd.com/read/28400771/signaling-strategies-of-malaria-parasite-for-its-survival-proliferation-and-infection-during-erythrocytic-stage
#3
REVIEW
Rani Soni, Drista Sharma, Praveen Rai, Bhaskar Sharma, Tarun K Bhatt
Irrespective of various efforts, malaria persist the most debilitating effect in terms of morbidity and mortality. Moreover, the existing drugs are also vulnerable to the emergence of drug resistance. To explore the potential targets for designing the most effective antimalarial therapies, it is required to focus on the facts of biochemical mechanism underlying the process of parasite survival and disease pathogenesis. This review is intended to bring out the existing knowledge about the functions and components of the major signaling pathways such as kinase signaling, calcium signaling, and cyclic nucleotide-based signaling, serving the various aspects of the parasitic asexual stage and highlighted the Toll-like receptors, glycosylphosphatidylinositol-mediated signaling, and molecular events in cytoadhesion, which elicit the host immune response...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28390397/modelling-the-therapeutic-dose-range-of-single-low-dose-primaquine-to-reduce-malaria-transmission-through-age-based-dosing
#4
Daniel Joseph Hayes, Clifford George Banda, Alexandra Chipasula-Teleka, Dianne Janette Terlouw
BACKGROUND: Low-dose primaquine is a key candidate for use in malaria transmission reduction and elimination campaigns such as mass drug administration (MDA). Uncertainty about the therapeutic dose range (TDR) required for general and paediatric populations challenge the implementation of the World Health Organisation's recommendation to add 0.25 mg/kg to current standard antimalarial treatment in such settings. Modelling work shows that for low-dose primaquine to have an impact, high efficacy and extensive population coverage are needed...
April 8, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28384505/the-vivax-surveyor-online-mapping-database-for-plasmodium-vivax-clinical-trials
#5
REVIEW
R J Commons, K Thriemer, G Humphreys, I Suay, C H Sibley, P J Guerin, R N Price
INTRODUCTION: Recurrent P. vivax infections are associated with significant morbidity and mortality. Although radical cure can reduce recurrent infection, it is confounded by antimalarial resistance and the lack of safe and effective hypnozoitocidal treatment. This study documents the available literature of published clinical trials of P. vivax, providing an up to date, online, open access tool to view and download available information. METHODS: A systematic review was conducted according to PRISMA guidelines to identify prospective P...
March 24, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28382048/phylogeny-predicts-the-quantity-of-antimalarial-alkaloids-within-the-iconic-yellow-cinchona-bark-rubiaceae-cinchona-calisaya
#6
Carla Maldonado, Christopher J Barnes, Claus Cornett, Else Holmfred, Steen H Hansen, Claes Persson, Alexandre Antonelli, Nina Rønsted
Considerable inter- and intraspecific variation with respect to the quantity and composition of plant natural products exists. The processes that drive this variation remain largely unknown. Understanding which factors determine chemical diversity has the potential to shed light on plant defenses against herbivores and diseases and accelerate drug discovery. For centuries, Cinchona alkaloids were the primary treatment of malaria. Using Cinchona calisaya as a model, we generated genetic profiles of leaf samples from four plastid (trnL-F, matK, rps16, and ndhF) and one nuclear (ITS) DNA regions from twenty-two C...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28377317/dehydroascorbate-derivatized-chitosan-particles-for-targeting-antimalarial-agents-to-infected-erythrocytes
#7
Hasham Shafi, D V Siva Reddy, Tabassum Khan, Rajeev Ranjan, Ashish Srivastava, Suniti Vaishya, Tanuj Sharma, Mohammad Imran Siddiqui, Saman Habib, Amit Misra
The mammalian glucose transporter GLUT-1 and Plasmodium falciparum hexose transporter PfHT1 are overexpressed on human RBC infected with the parasite (iRBC), presumably for enhanced glucose uptake. Dehydroascorbic acid (DHA) competes out glucose in GLUT-1 binding. We prepared particles containing chloroquine phosphate using novel derivatives of chitosan (CSN). CSN was either pre-derivatized with DHA (PRE) or particles made of CSN were derivatized by surface-grafting DHA (POST). The optimized formulations were analyzed for size (170-200nm) drug content (about 40%) entrapment efficiency (50-57%), in vitro drug release (80% in 72h, Higuchi's model), hemolysis on exposure to whole blood or RBC at 5% hematocrit, cytotoxicity towards cultured HEK 293T (kidney) and HepG2 (hepatic) cells, targeting iRBC and in vitro efficacy against P...
April 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28376874/genetic-polymorphisms-in-plasmodium-falciparum-chloroquine-resistance-genes-pfcrt-and-pfmdr1-in-north-sulawesi-indonesia
#8
Patrick Reteng, Visia Vrisca, Inka Sukarno, Ilham Habib Djarkoni, Jane Angela Kalangi, George Eduardo Jacobs, Lucky Ronald Runtuwene, Yuki Eshita, Ryuichiro Maeda, Yutaka Suzuki, Arthur Elia Mongan, Sarah Maria Warouw, Junya Yamagishi, Josef Tuda
BACKGROUND: Malaria still poses one of the major threats to human health. Development of effective antimalarial drugs has decreased this threat; however, the emergence of drug-resistant Plasmodium falciparum, a cause of Malaria, is disconcerting. The antimalarial drug chloroquine has been effectively used, but resistant parasites have spread worldwide. Interestingly, the withdrawal of the drug reportedly leads to an increased population of susceptible parasites in some cases. We examined the prevalence of genomic polymorphisms in a malaria parasite P...
April 4, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28376349/genetic-diversity-of-next-generation-antimalarial-targets-a-baseline-for-drug-resistance-surveillance-programmes
#9
Ana Rita Gomes, Matt Ravenhall, Ernest Diez Benavente, Arthur Talman, Colin Sutherland, Cally Roper, Taane G Clark, Susana Campino
Drug resistance is a recurrent problem in the fight against malaria. Genetic and epidemiological surveillance of antimalarial resistant parasite alleles is crucial to guide drug therapies and clinical management. New antimalarial compounds are currently at various stages of clinical trials and regulatory evaluation. Using ∼2000 Plasmodium falciparum genome sequences, we investigated the genetic diversity of eleven gene-targets of promising antimalarial compounds and assessed their potential efficiency across malaria endemic regions...
March 9, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28374446/superbanone-a-new-2-aryl-3-benzofuranone-and-other-bioactive-constituents-from-the-tube-roots-of-butea-superba
#10
Jutatip Boonsombat, Vilailak Prachyawarakorn, Acharavadee Pansanit, Chulabhorn Mahidol, Somsak Ruchirawat, Sanit Thongnest
Phytochemical investigation from the tube roots of Butea superba, led to the isolation and identification of a new 2-aryl-3-benzofuranone named superbanone (1), one benzoin, 2-hydroxyl-1-(2-hydroxy-4-methoxyphenyl)-2-(4-methoxy-phenyl)ethanone (2), eight pterocarpans (3-10), and eleven isoflavonoids (11-21). Compound 2 was identified for the first time as a natural product. The structure of the isolated compounds was elucidated using spectroscopic methods, mainly 1D and 2D NMR. The isolated compounds and their derivatives were evaluated for α-glucosidase inhibitory and antimalarial activities...
April 4, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28374255/qsar-modeling-and-chemical-space-analysis-of-antimalarial-compounds
#11
Pavel Sidorov, Birgit Viira, Elisabeth Davioud-Charvet, Uko Maran, Gilles Marcou, Dragos Horvath, Alexandre Varnek
Generative topographic mapping (GTM) has been used to visualize and analyze the chemical space of antimalarial compounds as well as to build predictive models linking structure of molecules with their antimalarial activity. For this, a database, including ~3000 molecules tested in one or several of 17 anti-Plasmodium activity assessment protocols, has been compiled by assembling experimental data from in-house and ChEMBL databases. GTM classification models built on subsets corresponding to individual bioassays perform similarly to the earlier reported SVM models...
April 3, 2017: Journal of Computer-aided Molecular Design
https://www.readbyqxmd.com/read/28373036/efficacy-and-safety-of-artemether-lumefantrine-for-the-treatment-of-uncomplicated-falciparum-malaria-at-sentinel-sites-in-mozambique-2015
#12
Crizolgo Salvador, Bernardete Rafael, Francisco Matsinhe, Baltazar Candrinho, Rosália Muthemba, Eva De Carvalho, Eva Naueia, Jahit Sacarlal, Josephine Namboze, Armindo Tiago, Marian Warsame, Sónia Enosse
The resistance of Plasmodium falciparum to anti-malarial drugs continues to challenge malaria control. We assessed the therapeutic efficacy and safety of artemether-lumefantrine (AL), the first-line treatment of uncomplicated P. falciparum malaria, in children under five years of age in Mozambique. We conducted a prospective one-arm study to evaluate the clinical and parasitological efficacy of AL over 28days at four sentinel sites, using the WHO protocol for assessing the efficacy of antimalarial treatment...
April 1, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28369083/h2o2-dynamics-in-the-malaria-parasite-plasmodium-falciparum
#13
Mahsa Rahbari, Stefan Rahlfs, Esther Jortzik, Ivan Bogeski, Katja Becker
Hydrogen peroxide is an important antimicrobial agent but is also crucially involved in redox signaling and pathogen-host cell interactions. As a basis for systematically investigating intracellular H2O2 dynamics and regulation in living malaria parasites, we established the genetically encoded fluorescent H2O2 sensors roGFP2-Orp1 and HyPer-3 in Plasmodium falciparum. Both ratiometric redox probes as well as the pH control SypHer were expressed in the cytosol of blood-stage parasites. Both redox sensors showed reproducible sensitivity towards H2O2 in the lower micromolar range in vitro and in the parasites...
2017: PloS One
https://www.readbyqxmd.com/read/28363638/investment-in-antimalarial-drug-development-is-bearing-fruit
#14
Elizabeth Ashley
No abstract text is available yet for this article.
March 28, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28363637/dsm265-for-plasmodium-falciparum-chemoprophylaxis-a-randomised-double-blinded-phase-1-trial-with-controlled-human-malaria-infection
#15
Mihály Sulyok, Thomas Rückle, Alexandra Roth, Raymund E Mürbeth, Stephan Chalon, Nicola Kerr, Sonia Schnieper Samec, Nathalie Gobeau, Carlos Lamsfus Calle, Javier Ibáñez, Zita Sulyok, Jana Held, Tamirat Gebru, Patricia Granados, Sina Brückner, Christian Nguetse, Juliana Mengue, Albert Lalremruata, Kim Lee Sim, Stephen L Hoffman, Jörg J Möhrle, Peter G Kremsner, Benjamin Mordmüller
BACKGROUND: A drug for causal (ie, pre-erythrocytic) prophylaxis of Plasmodium falciparum malaria with prolonged activity would substantially advance malaria control. DSM265 is an experimental antimalarial that selectively inhibits the parasite dihydroorotate dehydrogenase. DSM265 shows in vitro activity against liver and blood stages of P falciparum. We assessed the prophylactic activity of DSM265 against controlled human malaria infection (CHMI). METHODS: At the Institute of Tropical Medicine, Eberhard Karls University (Tübingen, Germany), healthy, malaria-naive adults were allocated to receive 400 mg DSM265 or placebo either 1 day (cohort 1A) or 7 days (cohort 2) before CHMI by direct venous inoculation (DVI) of 3200 aseptic, purified, cryopreserved P falciparum sporozoites (PfSPZ Challenge; Sanaria Inc, Rockville, MD, USA)...
March 28, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28363636/safety-tolerability-pharmacokinetics-and-activity-of-the-novel-long-acting-antimalarial-dsm265-a-two-part-first-in-human-phase-1a-1b-randomised-study
#16
James S McCarthy, Julie Lotharius, Thomas Rückle, Stephan Chalon, Margaret A Phillips, Suzanne Elliott, Silvana Sekuloski, Paul Griffin, Caroline L Ng, David A Fidock, Louise Marquart, Noelle S Williams, Nathalie Gobeau, Lidiya Bebrevska, Maria Rosario, Kennan Marsh, Jörg J Möhrle
BACKGROUND: DSM265 is a novel antimalarial that inhibits plasmodial dihydroorotate dehydrogenase, an enzyme essential for pyrimidine biosynthesis. We investigated the safety, tolerability, and pharmacokinetics of DSM265, and tested its antimalarial activity. METHODS: Healthy participants aged 18-55 years were enrolled in a two-part study: part 1, a single ascending dose (25-1200 mg), double-blind, randomised, placebo-controlled study, and part 2, an open-label, randomised, active-comparator controlled study, in which participants were inoculated with Plasmodium falciparum induced blood-stage malaria (IBSM) and treated with DSM265 (150 mg) or mefloquine (10 mg/kg)...
March 28, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28362910/treatment-of-chronic-asymptomatic-plasmodium-falciparum-infection-does-not-increase-the-risk-of-clinical-malaria-upon-reinfection
#17
Silvia Portugal, Tuan M Tran, Aissata Ongoiba, Aboudramane Bathily, Shanping Li, Safiatou Doumbo, Jeff Skinner, Didier Doumtabe, Younoussou Kone, Jules Sangala, Aarti Jain, D Huw Davies, Christopher Hung, Li Liang, Stacy Ricklefs, Manijeh Vafa Homann, Philip L Felgner, Stephen F Porcella, Anna Färnert, Ogobara K Doumbo, Kassoum Kayentao, Brian M Greenwood, Boubacar Traore, Peter D Crompton
Background: Chronic asymptomatic Plasmodium falciparum infections are common in endemic areas and are thought to contribute to the maintenance of malaria immunity. Whether treatment of these infections increases the subsequent risk of clinical episodes of malaria is unclear. Methods: In a 3-year study in Mali, asymptomatic individuals with or without P. falciparum infection at the end of the 6-month dry season were identified by polymerase chain reaction (PCR), and clinical malaria risk was compared during the ensuing 6-month malaria transmission season...
March 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28361906/herbicidal-properties-of-antimalarial-drugs
#18
Maxime G Corral, Julie Leroux, Keith A Stubbs, Joshua S Mylne
The evolutionary relationship between plants and the malarial parasite Plasmodium falciparum is well established and underscored by the P. falciparum apicoplast, an essential chloroplast-like organelle. As a result of this relationship, studies have demonstrated that herbicides active against plants are also active against P. falciparum and thus could act as antimalarial drug leads. Here we show the converse is also true; many antimalarial compounds developed for human use are highly herbicidal. We found that human antimalarial drugs (e...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28360437/introducing-new-antimalarial-analogues-of-chloroquine-and-amodiaquine-a-narrative-review
#19
REVIEW
Arezoo Rafiee Parhizgar, Azar Tahghighi
Antimalarial drugs with the 4-aminoquinoline scaffold such as the important drugs, chloroquine (CQ) and amodiaquine (AQ), have been used to prevent and treat malaria for many years. The importance of these drugs is related to their simple usage, high efficacy, affordability, and cost-effectiveness of their synthesis. In recent years, with the spread of parasite resistance to CQ and cross-resistance to its other analogues have decreased their consumption in many geographical areas. On the other hand, AQ is an effective antimalarial drug which its usage has been restricted due to hepatic and hematological toxicities...
March 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28358871/post-licensure-safety-evaluation-of-dihydroartemisinin-piperaquine-in-the-three-major-ecological-zones-across-ghana
#20
Abraham R Oduro, Seth Owusu-Agyei, Margaret Gyapong, Isaac Osei, Alex Adjei, Abena Yawson, Edward Sobe, Rita Baiden, Martin Adjuik, Fred Binka
BACKGROUND: Uncommon and rare adverse events (AEs), with delayed onset may not be detected before new drugs are licensed and deployed. The present study examined the post licensure safety of dihydroartemisinin-piperaquine (DHP) as an additional treatment for malaria in Ghana. The relationship between the incidence of AEs, treatment completion rate, participant characteristics and concomitant medications are reported. METHODS: A study conducted from September 2013 to June 2014 in Navrongo, Kintampo and Dodowa health research centres in Ghana is presented...
2017: PloS One
keyword
keyword
33027
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"