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plasmodium infection

Diagnostic performance of rapid diagnostic test, light microscopy and polymerase chain reaction during mass survey conducted in low and high malaria-endemic areas from two North-Eastern states of India

March 31, 2021 - 14:39 -- Open Access
Author(s): 
Shankar H, Singh MP, Phookan S, Singh K, Mishra N
Reference: 
Parasitol Res (2021)

An early and accurate diagnosis followed by prompt treatment is pre-requisite for the management of any disease. Malaria diagnosis is routinely performed by microscopy and rapid diagnostic tests (RDTs) in the field settings; however, their performance may vary across regions, age and asymptomatic status. Owing to this, we assessed the diagnostic performance of conventional and advanced molecular tools for malaria detection in low and high malaria-endemic settings. We performed mass blood surveys in low and high endemic regions of two North-Eastern districts from the states of Assam and Meghalaya.

Plasmodium infection inhibits triple negative 4T1 breast cancer potentially through induction of CD8(+) T cell-mediated antitumor responses in mice

March 9, 2021 - 15:50 -- Open Access
Author(s): 
Pan J, Ma M, Qin L, Kang Z, Adah D, Tao Z, Li X, Dai L, Zhao S, Chen X, Zhou Q
Reference: 
Biomed Pharmacother. 2021 Mar 3;138:111406

We previously reported that Plasmodium infection promotes antitumor immunity in a murine Lewis lung cancer. In this study, we investigated the effects of Plasmodium infection on the tumor inhibition and antitumor CD8+ T cell responses in a murine triple negative breast cancer (TNBCA) model. The results showed that Plasmodium infection significantly inhibited tumor growth, and increased the survival rate of the tumor-bearing mice. Both effector and memory CD8+ T cells were increased in peripheral blood and tumor-draining lymph node (DLN) in the infected mice.

NOT Open Access | Manipulating niche composition limits damage to haematopoietic stem cells during Plasmodium infection

November 25, 2020 - 13:16 -- NOT Open Access
Author(s): 
Haltalli MLR, Watcham S, Lo Celso C, et al.
Reference: 
Nat Cell Biol. 2020 Nov 23

Severe infections are a major stress on haematopoiesis, where the consequences for haematopoietic stem cells (HSCs) have only recently started to emerge. HSC function critically depends on the integrity of complex bone marrow (BM) niches; however, what role the BM microenvironment plays in mediating the effects of infection on HSCs remains an open question.

Prevalence and Risk Factors of Asymptomatic Plasmodium Infection in Gondar Zuria District, Northwest Ethiopia

November 14, 2020 - 16:38 -- Open Access
Author(s): 
Minwuyelet A, Eshetu T, Milikit D, Aschale Y
Reference: 
Infect Drug Resist. 2020 Nov 4;13:3969-3975

Malaria is one of the major public health problems worldwide. In Ethiopia, an increase in malaria incidence may be attributed to the presence of community-wide asymptomatic Plasmodium infection. This study aims to assess asymptomatic Plasmodium infection and associated factors in Gondar Zuria district, Northwest Ethiopia.

Not Open Access | Flagging performance of Sysmex XN-10 haematology analyser for malaria detection

October 7, 2020 - 16:20 -- NOT Open Access
Author(s): 
Dumas C, Tirard-Collet P, Mestrallet F, Girard S, Jallades L, Picot S, Bienvenu AL.
Reference: 
J Clin Pathol. 2020 Oct;73(10):676-677

The aim was to assess the flagging performance of Sysmex XN-10 haematology analyser for malaria detection through the parasitic red blood cell ('pRBC') alarm.

Melatonin action in Plasmodium infection: Searching for molecules that modulate the asexual cycle as a strategy to impair the parasite cycle

October 7, 2020 - 16:04 -- Open Access
Author(s): 
Pereira PHS, Garcia CRS
Reference: 
J Pineal Res. 2020 Oct 6:e12700

Half of the world's population lives in countries at risk of malaria infection, which results in approximately 450,000 deaths annually. Malaria parasites infect erythrocytes in a coordinated manner, with cycle durations in multiples of 24 hours, which reflects a behavior consistent with the host's circadian cycle. Interference in cycle coordination can help the immune system to naturally fight infection.

A Sweet Galactose Transfer: Metabolic Oligosaccharide Engineering as a Tool To Study Glycans in Plasmodium Infection

September 17, 2020 - 13:49 -- Open Access
Author(s): 
Kitowski A, Bernardes GJL
Reference: 
Chembiochem. 2020 Sep 14;21(18):2696-2700

The introduction of chemical reporter groups into glycan structures through metabolic oligosaccharide engineering (MOE) followed by bio-orthogonal ligation is an important tool to study glycosylation. We show the incorporation of synthetic galactose derivatives that bear terminal alkene groups in hepatic cells, with and without infection by Plasmodium berghei parasites, the causative agent of malaria.

Point prevalence of asymptomatic Plasmodium infection and the comparison of microscopy, rapid diagnostic test and nested PCR for the diagnosis of asymptomatic malaria among children under 5 years in Ghana

July 28, 2020 - 14:06 -- Open Access
Author(s): 
Okyere B, Owusu-Ofori A, Dickerson T, et al.
Reference: 
PLoS ONE 15(7): e0232874

Plasmodium infection among children is a serious public health problem. Asymptomatic malaria infection among humans serves as a significant reservoir for transmitting Plasmodium to uninfected Anopheles mosquitoes, fueling malaria endemicity and asymptomatic malaria may progress to clinical malaria. Therefore, prompt and accurate diagnosis of malaria infection is crucial for the management and control of malaria, especially in endemic areas. This study assessed the point prevalence of asymptomatic malaria infection and evaluated the performance of malaria Rapid Diagnostic Tests (RDT), light microscopy and nested PCR (nPCR) for the diagnosis of asymptomatic malaria infection in a paediatric population in the Atwima Nwabiagya North district, Ghana.

Prediction of malaria transmission drivers in Anopheles mosquitoes using artificial intelligence coupled to MALDI-TOF mass spectrometry

July 13, 2020 - 16:42 -- Open Access
Author(s): 
Nabet C, Chaline A, Franetich JF, Brossas JY, Shahmirian N, Silvie O, Tannier X, Piarroux R
Reference: 
Sci Rep. 2020 Jul 9;10(1):11379

Vector control programmes are a strategic priority in the fight against malaria. However, vector control interventions require rigorous monitoring. Entomological tools for characterizing malaria transmission drivers are limited and are difficult to establish in the field. To predict Anopheles drivers of malaria transmission, such as mosquito age, blood feeding and Plasmodium infection, we evaluated artificial neural networks (ANNs) coupled to matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry (MS) and analysed the impact on the proteome of laboratory-reared Anopheles stephensi mosquitoes.

NOT Open Access | Species Composition of Anopheles (Diptera: Culicidae) in Selected Forested Tourist Areas of Nigeria Endemic for Malaria

June 23, 2020 - 15:22 -- NOT Open Access
Author(s): 
Oduwole OA, Oringanje CM, Oduola AO, Nwachuku NS, Meremikwu MM, Alaribe AAA
Reference: 
J Med Entomol. 2020 Jun 19:tjaa110

The study was carried out to determine relative abundance, species diversity, of Anopheles species (Diptera: Culicidae) in selected forested areas in Cross River State, Nigeria and the prevalence of malaria infection in the specimens. Mosquitoes were collected using pyrethrum spray catch and Centre for Disease Control light traps modified with yeast and sugar to generate carbon dioxide (CO2) and identified using morphological identification keys. We used a multiplex polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) to simultaneously distinguish sibling species of the An. gambiae s.l, including separation of An. gambiae s.s. and An. coluzzii (Diptera: Culicidae).

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