Scientists capture images of antibodies working together against malaria

(Scripps Research Institute) Scientists investigating how the human immune system defends against malaria have uncovered a rare phenomenon: antibodies working together to bind to a vulnerable spot on the parasite.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news

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(Barcelona Institute for Global Health (ISGlobal)) Extracellular vesicles (EVs) play a role in the pathogenesis of malaria vivax, according to a study led by researchers from the Barcelona Institute for Global Health (ISGlobal) and the Germans Trias i Pujol Health Science Research Institute (IGTP). The findings, published in Nature Communications, indicate that EVs from P. vivax patients communicate with spleen fibroblasts promoting the adhesion of parasite-infected red blood cells. These data provide important insights into the pathology of vivax malaria.
Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news
Abstract Helminths, including cestodes, nematodes and trematodes, are a huge global health burden, infecting hundreds of millions of people. In many cases, existing drugs such as benzimidazoles, diethylcarbamazine, ivermectin and praziquantel are insufficiently efficacious, contraindicated in some populations, or at risk of the development of resistance, thereby impeding progress towards World Health Organization goals to control or eliminate these neglected tropical diseases. However, there has been limited recent progress in developing new drugs for these diseases due to lack of commercial attractiveness, leading to the ...
Source: Beilstein Journal of Organic Chemistry - Category: Chemistry Authors: Tags: anthelmintic antiparasitic cestode nematode trematode Review Source Type: research
This study shows that the magnitude of the host transcriptional response can differ markedly from related parasites with different virulence, and it enables a better understanding of the molecular interactions taking place between hosts and parasites. PMID: 32469658 [PubMed - as supplied by publisher]
Source: The American Naturalist - Category: Biology Authors: Tags: Am Nat Source Type: research
(Ehime University) An international collaborative team from PROS Ehime University and CellFee Science, Japan; the Walter and Eliza Hall Institute, Australia; Pasteur Institute, France; and Foundation for Innovative New Diagnostics, Switzerland developed a new diagnostic blood test which detects recent exposure to 'vivax' malaria. The new test can also identify people who may harbor dormant liver-stage malaria parasites, which can cause illness. This new diagnostic approach has the potential to enhance malaria surveillance and accelerate elimination.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
Plasmodium falciparum is causative agent of human malaria. Sixty percent of mRNAs from its extremely AT-rich (81%) genome harbor long polyadenosine (polyA) runs within their ORFs, distinguishing the parasite from its hosts and other sequenced organisms. Recent studies indicate polyA runs cause ribosome stalling and frameshifting, triggering mRNA surveillance pathways and attenuating protein synthesis. Here, we show that theP. falciparum is an exception to this rule. We demonstrate that both endogenous genes and reporter sequences containing long polyA runs are efficiently and accurately translated inP. falciparum cells. We...
Source: eLife - Category: Biomedical Science Tags: Biochemistry and Chemical Biology Cell Biology Source Type: research
Rapid diagnostic tests (RDTs) have become the most common diagnostic tool for detection of Plasmodium falciparum malaria, in particular in remote areas. RDT blood spots provide a source of parasite DNA for molecu...
Source: Malaria Journal - Category: Infectious Diseases Authors: Tags: Methodology Source Type: research
In this study, 10-(4,5-dihydrothiazol-2-yl)thio)decan-1-ol) (thiazoline), a synthetic analog of 3-alkylpiridine marine alkaloid, and a potent antimalarial substance, was incorporated into O/W nanoemulsion. This formulation was prepared by a 23 factorial design. It was characterized by globule diameter, polydispersity index, zeta potential, encapsulation efficiency, in vitro thiazoline release at pH 2 and 6.86, and accelerated stability. In vitro and in vivo antimalarial activity was determined against P. falciparum and P. berghei, respectively. Thiazoline nanoemulsion showed 248.8 nm of globule diameter, 0.236 of polydispe...
Source: European Journal of Pharmaceutical Sciences - Category: Drugs & Pharmacology Authors: Tags: Eur J Pharm Sci Source Type: research
Over the last decade, artemisinin-based combination therapy (ACT) has contributed substantially to the decrease in malaria-related morbidity and mortality. The emergence of Plasmodium falciparum parasites resista...
Source: Malaria Journal - Category: Infectious Diseases Authors: Tags: Research Source Type: research
We describe the IgG antibody response in individuals living in an unstable malaria transmission area in Pará state, Amazon region, Brazil, where an epidemic of P. vivax malaria was recorded and monitored over time. As indicated by epidemiological data, the number of P. vivax-caused malaria cases decreased by approximately 90% after three years and the prevalence of IgG positive to PvMSP1-19 decreased significantly over time, in 2010 (93.4 %), 2012 (78.3%), and 2013 (85.1%). Acquisition and decay of the IgG antibody against P. vivax MSP1-19 showed variability among individuals living in areas with recent circulating ...
Source: Acta Tropica - Category: Infectious Diseases Authors: Tags: Acta Trop Source Type: research
In the largest observational study thus far investigating the drug hydroxychloroquine as a treatment for COVID-19, researchers found little evidence that it helps, and worrying evidence that the medication may cause harm. In a study published May 22 in the journal Lancet, scientists in the U.S. and Switzerland report on an analysis of more than 96,000 people hospitalized with confirmed COVID-19 in 671 hospitals on six continents. Nearly 15,000 patients were treated with one of the following: chloroquine (which is an older version of hydroxychloroquine), hydroxychloroquine, or either of those drugs in combination with an an...
Source: TIME: Science - Category: Science Authors: Tags: Uncategorized COVID-19 UnitedWeRise20Disaster Source Type: news
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