Malaria News Today 2020-10-22

The search for adjunctive therapy to aid in recovery from cerebral malaria is explored in Malaria Journal. A faster acting crystalline form of an insecticide is studied. In Nigeria the National Malaria Elimination Program advocates for equal footing with COVID-19 action. Links to full stories and abstracts are found below.

Dimethyl fumarate reduces TNF and Plasmodium falciparum induced brain endothelium activation in vitro

Neida K. Mita-Mendoza, and colleagues studied Cerebral malaria (CM) which is associated with morbidity and mortality despite the use of potent anti-malarial agents. Brain endothelial cell activation and dysfunction from oxidative and inflammatory host responses and products released by Plasmodium falciparum-infected erythrocytes (IE), are likely the major contributors to the encephalopathy, seizures, and brain swelling that are associated with CM. The development of adjunctive therapy to reduce the pathological consequences of host response pathways could improve outcomes.

To accurately reflect clinically relevant parasite biology a unique panel of parasite isolates derived from patients with stringently defined CM was developed. The effect of TNF and these parasite lines on primary human brain microvascular endothelial cell (HBMVEC) activation in an in vitro co-culture model was tested. HBMVEC activation was measured by cellular release of IL6 and nuclear translocation of NF?B. The transcriptional and functional effects of dimethyl fumarate (DMF), an FDA approved drug which induces the NRF2 pathway, on host and parasite induced HBMVEC activation was characterized. In addition, the effect of DMF on parasite binding to TNF stimulated HBMVEC in a semi-static binding assay was examined.

The findings provide evidence that targeting the nuclear factor E2-related factor 2 ( NRF2) pathway in tumour necrosis factor (TNF) and parasite activated human brain microvascular endothelial cell (HBMVEC) mediates multiple protective pathways and may represent a novel adjunctive therapy to improve infection outcomes in CM.

Fast-acting insecticide polymorph could boost malaria-control efforts

Chemistry World reports on a faster-acting version of a common insecticide could boost malaria control efforts. The new crystalline form of deltamethrin is absorbed by mosquitoes 12 times faster than commercial forms and could help to limit malaria transmission despite growing rates of insecticide resistance.

Microcystals of contact insecticides like deltamethrin are crucial ingredients in indoor sprays and treated bed nets used to combat malaria-spreading mosquitoes. But many mosquito populations are developing resistance to these compounds, which is harming efforts to control the disease.

Treat Malaria as National Health Emergency, NEMP tells Federal Government

The Coordinator of National Malaria Elimination Programme (NEMP), has asked the federal government to tackle malaria as a national health emergency in the same manner COVID-19 pandemic is being handled. Against the background of increasing poverty in the country, Civil Society in Malaria Control, Immunisation and Nutrition (ACOMIN) has said there is a direct linkage between malaria scourge and the level of poverty in communities.

Speaking at a meeting with the civil society group involved in anti malaria advocacy, Coordinator of NEMP, said the current level of funding of the health sector by government is unacceptably low.

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