New Anti-Malarial Drugs: Who Cares?

New Anti-Malarial Drugs: Who Cares? Curr Top Med Chem. 2014 Aug 8; Authors: Picot S, Loiseau PM, Bienvenu AL Abstract Most of the people suffering malaria do not know how complex is that disease and how hard searchers are working to fight against it. Some of these people are dying from malaria while still efficient drug combinations should have save their lives. But these drugs were not available for them when needed, or the diagnosis was wrong, or the drugs were fake, or the doctor was untrained, or the patient had no money. Should this terrible reality preclude the need for continuous research to develop new antimalarial drugs? Should people working in laboratories located in non-endemic countries adapt their project to that reality? Malaria eradication, then elimination was announced and broadcasted in the late sixties (twentieth century!), and later forgotten. From that failure due to chloroquine resistance and after decades of less arrogant work, billions of dollars are on the table again to claim this goal. There were bed nets, drugs, vaccine and communication as starters, let's hope people in endemic countries will be winners. PMID: 25116585 [PubMed - as supplied by publisher]
Source: Current Topics in Medicinal Chemistry - Category: Chemistry Authors: Tags: Curr Top Med Chem Source Type: research

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Abstract Plasmodium vivax, the chronic relapsing human malaria parasite with the most widespread distribution, possesses proteins associated with the merozoite surface that could be targets for host immune responses and potential vaccine candidates. Of these, the merozoite surface protein 3 of P. vivax (PvMSP3) is an attractive vaccine target as well as a genetic marker for epidemiological surveillance. PvMSP3 comprises a group of protein members encoded by a multigene family. Although some protein members, i.e. PvMSP3α and PvMSP3β, have been targets for molecular and immunological investigations, the m...
Source: Infection, Genetics and Evolution - Category: Genetics & Stem Cells Authors: Tags: Infect Genet Evol Source Type: research
In this study, using samples collected from young children in Ghana at multiple time points during a longitudinal study, we adapted a predictive modelling framework which combines feature selection and machine learning techniques to identify an antigen signature of clinical immunity to malaria. Our results show that an individual's immune status can be accurately predicted by measuring antibody responses to a small defined set of 15 target antigens. We further demonstrate that the identified immune signature is highly versatile and capable of providing precise and accurate estimates of clinical protection from malaria in a...
Source: Molecular and Cellular Proteomics : MCP - Category: Molecular Biology Authors: Tags: Mol Cell Proteomics Source Type: research
Conclusions: Naturally acquired sexual stage immunity, as detected by antibodies to Pfs230 and Pfs48/45, was present in most studies analyzed. Significant between-study heterogeneity was seen, and methodological factors were a major contributor to this, and prevented further analysis of epidemiological and biological factors. This demonstrates a need for standardized protocols for conducting and reporting seroepidemiological analyses.
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
In conclusion, the overall results present the molecular characterization of annexin B30, annexin B5a, annexin B7a and annexin B5b from S. mansoni in host-parasite interactions and strongly suggest that the molecules could be useful candidates for vaccine or diagnostic development.
Source: Molecular and Biochemical Parasitology - Category: Parasitology Source Type: research
CONCLUSION: For appropriate vaccination, pre-travel consultation at least 3 weeks before departure is crucial. Travelers should be aware of required vaccination and malaria prophylaxis before visiting South and Central America and Asia. Plans to enhance compliance of the elderly and business travelers should be contrived. PMID: 31436051 [PubMed - in process]
Source: J Korean Med Sci - Category: General Medicine Authors: Tags: J Korean Med Sci Source Type: research
Background: Passively-acquired respiratory syncytial virus (RSV) neutralizing antibody (Ab) can protect against RSV-associated lower respiratory tract illness. Maternal RSV immunization is, therefore, an attractive strategy for protection of very young infants. Vaccines for this purpose are currently being evaluated in clinical trials, but conditions such as preterm birth, placental malaria, maternal hypergammaglobulinemia and HIV infection might threaten this strategy. Each has been shown to impair transplacental Ab transfer for a variety of pathogens, but RSV-specific data are limited. Work in The Gambia demonstrated t...
Source: The Pediatric Infectious Disease Journal - Category: Infectious Diseases Tags: Original Studies Source Type: research
Discussion Dengue is an important arboviral infection that affects about 40% of the world population. It is found mainly in topical and subtropical areas of the world mainly in developing countries but it range is spreading including the United States. A review of common arboviruses can be found here. It is a flaviavirus with 4 distinct serotypes named DENV-1 through DENV-4 and is spread by A. aegypti a day biting mosquito. Infection with one serotype confers immunity to that serotype but not the others. It does offer some protection for cross-infection but this only lasts a few months. Incubation period is 3-14 days with ...
Source: - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
Abstract To overcome the extensive polymorphism found in human Plasmodium antigens and to avoid the lengthy characterization of their 3 dimensional structure and subsequent production of the native proteins we have been concentrated in large unstructured, non-or low-polymorphic fragments present in the blood stage of P. falciparum. Three fragments derived from the 2 family-specific and constant regions of merozoite surface protein (MSP2) and PFF0165c protein were previously selected for evaluation as potential single vaccine candidates. In order to increase and optimize their potential efficacy against P. falcipar...
Source: Vaccine - Category: Allergy & Immunology Authors: Tags: Vaccine Source Type: research
Publication date: Available online 12 June 2019Source: Parasitology InternationalAuthor(s): Vipin Kumar Deo, Yu Inagaki, Elsa Herdiana Murhandarwati, Widya Asmara, Takatsugu Miyazaki, Tatsuya Kato, Enoch Y. ParkAbstractPlasmodium falciparum is a blood protozoan parasite, transmitted by Anopheles mosquitoes vectors, that can cause morbidity and even leads to mortality in tropical countries. Strategies are directed to combat malaria including development of diagnostic tools, serological markers and vaccinations. A target under intensive studies is Merozoite Surface Protein (MSP)-3. The aim of this study is to express and pur...
Source: Parasitology International - Category: Parasitology Source Type: research
How antibodies naturally acquired during Plasmodium falciparum infection provide clinical immunity to blood-stage malaria is unclear. We studied the function of natural killer (NK) cells in people living in a malaria-endemic region of Mali. Multi-parameter flow cytometry revealed a high proportion of adaptive NK cells, which are defined by the loss of transcription factor PLZF and Fc receptor -chain. Adaptive NK cells dominated antibody-dependent cellular cytotoxicity responses, and their frequency within total NK cells correlated with lower parasitemia and resistance to malaria. P. falciparum–infected RBCs induced N...
Source: The Journal of Experimental Medicine - Category: Internal Medicine Authors: Tags: Innate Immunity and Inflammation, Infectious Disease and Host Defense Brief Definitive Reports Source Type: research
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