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https://www.readbyqxmd.com/read/29147042/insecticide-treated-nets-and-malaria-prevalence-papua-new-guinea-2008-2014
#1
Manuel W Hetzel, Justin Pulford, Yangta Ura, Sharon Jamea-Maiasa, Anthony Tandrapah, Nandao Tarongka, Lina Lorry, Leanne J Robinson, Ken Lilley, Leo Makita, Peter M Siba, Ivo Mueller
Objective: To investigate changes in malaria prevalence in Papua New Guinea after the distribution of long-lasting Insecticide-treated nets, starting in 2004, and the introduction of artemisinin-based combination therapy in 2011. Methods: Two malaria surveys were conducted in 2010-2011 and 2013-2014. They included 77 and 92 randomly selected villages, respectively. In each village, all members of 30 randomly selected households gave blood samples and were assessed for malaria infection by light microscopy...
October 1, 2017: Bulletin of the World Health Organization
https://www.readbyqxmd.com/read/29141762/efficacy-of-artemether-lumefantrine-for-uncomplicated-plasmodium-falciparum-malaria-in-cruzeiro-do-sul-brazil-2016
#2
Megumi Itoh, Suiane Negreiros do Valle, Sâmela Farias, Thayna Maria Holanda de Souza, Giselle Maria Rachid Viana, Naomi Lucchi, Stella Chenet, Paola Marchesini, Marinete Póvoa, Ana Carolina Faria E Silva Santelli, Alexandre Macedo de Oliveira
We evaluated the therapeutic efficacy of artemether-lumefantrine (AL) fixed-dose combination to treat uncomplicated Plasmodium falciparum malaria in Cruzeiro do Sul, Acre State, in the Amazon region of Brazil. Between December 2015 and May 2016, we enrolled 79 patients, 5-79 years old with fever or history of fever in the previous 48 hours and P. falciparum monoinfection confirmed by microscopy. Attempts were made to provide direct observation or phone reminders for all six doses of AL, and patients were followed-up for 28 days...
November 6, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141758/in-vitro-sensitivity-of-pyronaridine-in-thai-isolates-of-plasmodium-falciparum
#3
Kittiya Mahotorn, Peerapan Tan-Ariya, Thunyapit Thita, Toon Ruang-Areerate, Naruemon Sittichot, Nantana Suwandittakul, Mathirut Mungthin
Pyronaridine, a Mannich base antimalarial agent with a high activity against chloroquine-resistant Plasmodium falciparum, has been combined with artesunate as a new artemisinin derivative-based combination therapy (ACT). Pyronaridine-artesunate combination could be one of the choices for the treatment of uncomplicated falciparum malaria in multidrug-resistant areas including Thailand. The aim of this study was to determine in vitro sensitivity and cross-resistance pattern of pyronaridine in Thai isolates of P...
October 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29137631/synthetic-oleanane-triterpenoids-enhance-blood-brain-barrier-integrity-and-improve-survival-in-experimental-cerebral-malaria
#4
Valerie M Crowley, Kodjo Ayi, Ziyue Lu, Karen T Liby, Michael Sporn, Kevin C Kain
BACKGROUND: Cerebral malaria (CM) is a severe complication of Plasmodium falciparum infection associated with high mortality and neurocognitive impairment in survivors. New anti-malarials and host-based adjunctive therapy may improve clinical outcome in CM. Synthetic oleanane triterpenoid (SO) compounds have shown efficacy in the treatment of diseases where inflammation and oxidative stress contribute to pathogenesis. METHODS: A derivative of the SO 2-cyano-3,12-dioxooleana-1,9-dien-28-oic acid (CDDO), CDDO-ethyl amide (CDDO-EA) was investigated for the treatment of severe malaria in a pre-clinical model...
November 14, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29136115/estradiol-levels-are-altered-in-human-immunodeficiency-virus-infected-pregnant-women-randomized-to-efavirenz-versus-lopinavir-ritonavir-based-antiretroviral-therapy
#5
Chloe R McDonald, Andrea L Conroy, Joel L Gamble, Eszter Papp, Michael Hawkes, Peter Olwoch, Paul Natureeba, Moses Kamya, Michael Silverman, Deborah Cohan, Catherine A Koss, Grant Dorsey, Kevin C Kain, Lena Serghides
Background: Combination antiretroviral therapy (cART) use in pregnancy has been associated with hormonal dysregulation. We performed a secondary retrospective analysis of longitudinal progesterone and estradiol levels in pregnancy using specimens from the Protease Inhibitors to Reduce Malaria Morbidity in HIV-infected Pregnant Women study, which randomized Ugandan human immunodeficiency virus (HIV)-infected ART-naive women to initiate either lopinavir/ritonavir (LPV/r)-based or efavirenz (EFV)-based cART...
November 10, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29132373/understanding-malaria-treatment-seeking-preferences-within-the-public-sector-amongst-mobile-migrant-workers-in-a-malaria-elimination-scenario-a-mixed-methods-study
#6
Aung Ye Naung Win, Thae Maung Maung, Khin Thet Wai, Tin Oo, Aung Thi, Rungrawee Tipmontree, Ngamphol Soonthornworasiri, Mondha Kengganpanich, Jaranit Kaewkungwal
BACKGROUND: Migration flows and the emerging resistance to artemisinin-based combination therapy in the Greater Mekong Sub-region (GMS) create programmatic challenges to meeting the AD 2030 malaria elimination target in Myanmar. The National Malaria Control Programme (NMCP) targeted migrant workers based mainly on the stability of their worksites (categories 1: permanent work-setting; categories 2 and 3: less stable work-settings). This study aims to assess the migration patterns, malaria treatment-seeking preferences, and challenges encountered by mobile/migrant workers at remote sites in a malaria-elimination setting...
November 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29132370/expanding-malaria-diagnosis-and-treatment-in-lao-pdr-lessons-learned-from-a-public-private-mix-initiative
#7
Nouannipha Simmalavong, Sengkham Phommixay, Phoudaliphone Kongmanivong, Odai Sichanthongthip, Bouasy Hongvangthong, Deyer Gopinath, David M Sintasath
BACKGROUND: As in other countries of the Greater Mekong Sub-region (GMS), the private health sector constitutes a significant avenue where malaria services are provided and presents a unique opportunity for public-private collaboration. In September 2008, a public-private mix (PPM) strategy was launched initially in four northern and southern provinces in Lao PDR to increase access to rapid diagnostic tests (RDTs) and artemisinin-based combination therapy (ACT), improve quality of care, and collect routine malaria data from the private sector...
November 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29127615/fungal-and-parasitic-cns-infections
#8
Pratibha Singhi, Arushi Gahlot Saini
Central nervous system fungal infections can be broadly divided into those that infect a healthy host such as Cryptococcus, Coccidioides, Histoplasma, Blastomyces, Sporothrix spp., and those that cause opportunistic infections in an immunocompromised host such as Candida, Aspergillus, Zygomycetes, Trichosporon spp. The clinical manifestations of central nervous system fungal infections commonly seen in children in clinical practice include a chronic meningitis or meningoencephalitis syndrome, brain abscess, rhino-cerebral syndrome and rarely, a fungal ventriculitis...
November 11, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29127021/severe-delayed-haemolytic-anaemia-associated-with-artemether-lumefantrine-treatment-of-malaria-in-a-japanese-traveller
#9
Chihiro Hasegawa, Masaharu Kudo, Haruhiko Maruyama, Mikio Kimura
Delayed haemolytic anaemia has been reported in association with intravenous artesunate treatment in patients with severe Plasmodium falciparum malaria, and furthermore, oral artemisinin-based combination therapies including artemether-lumefantrine (AL) have also been incriminated. However, definite cases of delayed haemolytic anaemia associated with AL appear to be scarce, as reported cases were often treated concomitantly with other anti-malarials. In this study, we report a severe case of delayed haemolytic anaemia following AL alone in a Japanese traveller with severe parasitaemia caused by numerous P...
November 7, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29122736/enhanced-antimalalarial-activity-of-a-prolonged-release-in-situ-gel-of-arteether-lumefantrine-in-a-murine-model
#10
Shilpa Dawre, Sulabha Pathak, Shobhona Sharma, Padma V Devarajan
The World Health Organization (WHO) recommends artemisinin-based combination therapy (ACT) for treatment of falciparum malaria. Arteether (ART), an artemisinin derivative, is effective against Plasmodium falciparum, but it is available only as painful oily intramuscular (i.m.) injections. We formulated lyotropic liquid crystalline preconcentrates of ART and Lumefantrine (LUM) ACT with and without biodegradable polymer for antimalarial therapy. Following i.m. injection, both formed intact gels in situ due to rapid transition into liquid crystalline phase (LCP) which was confirmed by small angle neutron scattering (SANS), x-ray diffraction (XRD), polarization optical microscopy (POM) and rheological changes...
November 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29121917/a-single-rapamycin-dose-protects-against-late-stage-experimental-cerebral-malaria-via-modulation-of-host-immunity-endothelial-activation-and-parasite-sequestration
#11
Pedro Mejia, J Humberto Treviño-Villarreal, Justin S Reynolds, Mariana De Niz, Andrew Thompson, Matthias Marti, James R Mitchell
BACKGROUND: Maladaptive immune responses during cerebral malaria (CM) result in high mortality despite opportune anti-malarial chemotherapy. Rapamycin, an FDA-approved immunomodulator, protects against experimental cerebral malaria (ECM) in mice through effects on the host. However, the potential for reduced adaptive immunity with chronic use, combined with an incomplete understanding of mechanisms underlying protection, limit translational potential as an adjunctive therapy in CM. RESULTS: The results presented herein demonstrate that a single dose of rapamycin, provided as late as day 4 or 5 post-infection, protected mice from ECM neuropathology and death through modulation of distinct host responses to infection...
November 9, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29121061/a-randomized-double-blind-active-control-trial-to-evaluate-the-efficacy-and-safety-of-a-three-day-course-of-tafenoquine-monotherapy-for-the-treatment-of-plasmodium-vivax-malaria
#12
Mark M Fukuda, Srivicha Krudsood, Khadeeja Mohamed, Justin A Green, Sukhuma Warrasak, Harald Noedl, Ataya Euswas, Mali Ittiverakul, Nillawan Buathong, Sabaithip Sriwichai, R Scott Miller, Colin Ohrt
BACKGROUND: Tafenoquine is an investigational 8-aminoquinoline for the prevention of Plasmodium vivax relapse. Tafenoquine has a long half-life and the potential for more convenient dosing, compared with the currently recommended 14-day primaquine regimen. METHODS: This randomized, active-control, double-blind trial was conducted in Bangkok, Thailand. Seventy patients with microscopically confirmed P. vivax were randomized (2:1) to tafenoquine 400 mg once daily for 3 days or 2500 mg total dose chloroquine phosphate (1500 mg chloroquine base) given over 3 days plus primaquine 15 mg daily for 14 days...
2017: PloS One
https://www.readbyqxmd.com/read/29119937/use-of-human-dihydroorotate-dehydrogenase-hdhodh-inhibitors-in-autoimmune-diseases-and-new-perspectives-in-cancer-therapy
#13
Marco L Lolli, Stefano Sainas, Agnese C Pippione, Marta Giorgis, Donatella Boschi, Franco Dosio
BACKGROUND: Human dihydroorotate dehydrogenase (hDHODH, EC 1.3.5.2), a flavin-dependent mitochondrial enzyme involved in de novo pyrimidine biosynthesis, is a validated therapeutic target for the treatment of autoimmune diseases, such as rheumatoid arthritis and multiple sclerosis. However, human DHODH inhibitors have also been investigated as treatment for cancer, parasite infections (i.e. malaria) and viruses as well as in the agrochemicals industry. OBJECTIVE: An overview of current knowledge of hDHODH inhibitors and their potential uses in diseases where hDHODH is involved...
November 8, 2017: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/29113928/cerebral-malaria-causes-enduring-behavioral-and-molecular-changes-in-mice-brain-without-causing-gross-histopathological-damage
#14
Thaíze Lopes de Souza, Ana Claudia Beck Grauncke, Leandro Rodrigo Ribeiro, Fernanda Kulinski Mello, Sara Marchesan Oliveira, Fátima Brant, Fabiana S Machado, Mauro Schneider Oliveira
Malaria, parasitic disease considered a major health public problem, is caused by Plasmodium protozoan genus and transmitted by the bite of infected female Anopheles mosquito genus. Cerebral malaria (CM) is the most severe presentation of malaria, caused by P. falciparum and responsible for high mortality and enduring development of cognitive deficits which may persist even after cure and cessation of therapy. In the present study we evaluated selected behavioral, neurochemical and neuropathologic parameters after rescue from experimental cerebral malaria caused by P...
November 4, 2017: Neuroscience
https://www.readbyqxmd.com/read/29110722/molecular-markers-for-artemisinin-and-partner-drug-resistance-in-natural-plasmodium-falciparum-populations-following-increased-insecticide-treated-net-coverage-along-the-slope-of-mount-cameroon-cross-sectional-study
#15
Tobias O Apinjoh, Regina N Mugri, Olivo Miotto, Hanesh F Chi, Rolland B Tata, Judith K Anchang-Kimbi, Eleanor M Fon, Delphine A Tangoh, Robert V Nyingchu, Christopher Jacob, Roberto Amato, Abdoulaye Djimde, Dominic Kwiatkowski, Eric A Achidi, Alfred Amambua-Ngwa
BACKGROUND: Drug resistance is one of the greatest challenges of malaria control programmes, with the monitoring of parasite resistance to artemisinins or to Artemisinin Combination Therapy (ACT) partner drugs critical to elimination efforts. Markers of resistance to a wide panel of antimalarials were assessed in natural parasite populations from southwestern Cameroon. METHODS: Individuals with asymptomatic parasitaemia or uncomplicated malaria were enrolled through cross-sectional surveys from May 2013 to March 2014 along the slope of mount Cameroon...
November 6, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29107705/amp-activated-protein-kinase-ampk-is-decreased-in-the-mouse-brain-during-experimental-cerebral-malaria
#16
Thittayil Suresh Apoorv, Chintanuri Karthik, Phanithi Prakash Babu
Cerebral malaria (CM) is a severe form of malaria caused by Plasmodium falciparum and P.vivax. CM affects the brain leading to coma and is the leading cause of death in malaria patients. The enzyme, adenosine 5'-monophosphate-activated protein kinase (AMPK), is an important metabolic sensor that helps in maintaining energy homeostasis during normal physiological as well as pathological conditions. In the present study, we studied the status of AMPK in the mouse model of CM. The C57BL/6 mice infected by rodent-specific P...
October 28, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29089636/ly6c-hi-inflammatory-monocytes-promote-susceptibility-to-leishmania-donovani-infection
#17
Cesar Terrazas, Sanjay Varikuti, Steve Oghumu, Heidi M Steinkamp, Nurittin Ardic, Jennifer Kimble, Hira Nakhasi, Abhay R Satoskar
Ly6C(hi) inflammatory monocytes (iMO) are critical for host defense against toxoplasmosis and malaria but their role in leishmaniasis is unclear. In this study, we report a detrimental role of Ly6C(hi) iMOs in visceral leishmaniasis (VL) caused by Leishmania donovani. We demonstrate that Ly6C(hi) iMOs are continuously recruited into the spleen and liver during L. donovani infection and they are preferential targets for the parasite. Using microarray-based gene expression profiling, we show that Ly6C(hi) iMOs isolated from the infected liver and spleen have distinct phenotypic and activation profiles...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29082016/randomised-controlled-trial-of-two-sequential-artemisinin-based-combination-therapy-regimens-to-treat-uncomplicated-falciparum-malaria-in-african-children-a-protocol-to-investigate-safety-efficacy-and-adherence
#18
Henk Dfh Schallig, Halidou Tinto, Patrick Sawa, Harparkash Kaur, Stephan Duparc, Deus S Ishengoma, Pascal Magnussen, Michael Alifrangis, Colin J Sutherland
BACKGROUND: Management of uncomplicated Plasmodium falciparum malaria relies on artemisinin-based combination therapies (ACTs). These highly effective regimens have contributed to reductions in malaria morbidity and mortality. However, artemisinin resistance in Asia and changing parasite susceptibility to ACT in Africa have now been well documented. Strategies that retain current ACT as efficacious treatments are urgently needed. METHODS: We present an open-label, randomised three-arm clinical trial protocol in three African settings representative of varying malaria epidemiology to investigate whether prolonged ACT-based regimens using currently available formulations can eliminate potentially resistant parasites...
2017: BMJ Global Health
https://www.readbyqxmd.com/read/29079720/a-global-survey-of-atpase-activity-in-plasmodium-falciparum-asexual-blood-stages-and-gametocytes
#19
Corrie Ortega, Andrew Frando, Bobbie-Jo Webb-Robertson, Lindsey N Anderson, Neil D Fleck, Erika L Flannery, Matthew Fishbaugher, Taylor A Murphree, Joshua R Hansen, Richard D Smith, Stefan Hi Kappe, Aaron Wright, Christoph Grundner
Effective malaria control and elimination in hyperendemic areas of the world will require treatment of the Plasmodium falciparum (Pf) blood stage that causes disease as well as the gametocyte stage that is required for transmission from humans to the mosquito vector. Most currently used therapies do not kill gametocytes, a highly specialized, non-replicating sexual parasite stage. Further confounding next generation drug development against Pf is the unknown metabolic state of the gametocyte and the lack of known biochemical activity for most parasite gene products in general...
October 27, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29070076/social-and-cultural-complexities-of-anti-malarial-drug-circulation-an-ethnographic-investigation-in-three-rural-remote-communes-of-cambodia
#20
Phasy Res
BACKGROUND: Anti-malarial medicine has a central role in malaria case management in Cambodia. It is, therefore, essential to study how anti-malarial drugs are distributed and consumed. This study aims to understand the socio-cultural complexity of anti-malarial drugs provision and usage practices. METHODS: Semi-structured interviews and observation were conducted in Cambodia at the communal, provincial, and national levels from January 2014 to January 2015. Health ministers, non-governmental officers, anti-malarial medicines distributors, village malaria volunteers and malaria patients were interviewed...
October 25, 2017: Malaria Journal
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