Patterns of inflammatory responses and parasite tolerance vary with malaria transmission intensity.

Abstract:

BACKGROUND:In individuals living in malaria-endemic regions, parasitaemia thresholds for the onset of clinical symptoms vary with transmission intensity. The mechanisms that mediate this relationship are however, unclear. Since inflammatory responses to parasite infection contribute to the clinical manifestation of malaria, this study investigated inflammatory cytokine responses in children with malaria from areas of different transmission intensities (ranging from low to high). METHODS:Blood samples were obtained from children confirmed with malaria at community hospitals in three areas with differing transmission intensities. Cytokine levels were assessed using the Luminex®-based magnetic bead array system, and levels were compared across sites using appropriate statistical tests. The relative contributions of age, gender, parasitaemia and transmission intensity on cytokine levels were investigated using multivariate regression analysis. RESULTS:Parasite density increased with increasing transmission intensity in children presenting to hospital with symptomatic malaria, indicating that the parasitaemia threshold for clinical malaria increases with increasing transmission intensity. Furthermore, levels of pro-inflammatory cytokines, including tumour necrosis factor alpha (TNF-α), interferon-gamma (IFN-γ), interleukin (IL)-1β, IL-2, IL-6, IL-8, and IL-12, decreased with increasing transmission intensity, and correlated significantly with parasitaemia levels in the low transmission area but not in high transmission areas. Similarly, levels of anti-inflammatory cytokines, including IL-4, IL-7, IL-10 and IL-13, decreased with increasing transmission intensity, with IL-10 showing strong correlation with parasitaemia levels in the low transmission area. Multiple linear regression analyses revealed that transmission intensity was a stronger predictor of cytokine levels than age, gender and parasitaemia. CONCLUSION:Taken together, the data demonstrate a strong relationship between the prevailing transmission intensity, parasitaemia levels and the magnitude of inflammatory responses induced during clinical malaria.

journal_name

Malar J

journal_title

Malaria journal

authors

Ademolue TW,Aniweh Y,Kusi KA,Awandare GA

doi

10.1186/s12936-017-1796-x

subject

Has Abstract

pub_date

2017-04-11 00:00:00

pages

145

issue

1

issn

1475-2875

pii

10.1186/s12936-017-1796-x

journal_volume

16

pub_type

杂志文章
  • A new class of insecticide for malaria vector control: evaluation of mosquito nets treated singly with indoxacarb (oxadiazine) or with a pyrethroid mixture against Anopheles gambiae and Culex quinquefasciatus.

    abstract:BACKGROUND:Universal coverage with long-lasting insecticidal mosquito nets (LLIN) or indoor residual spraying (IRS) of houses remain the primary strategies for the control of mosquito vectors of malaria. Pyrethroid resistant malaria vectors are widespread throughout sub-Saharan Africa and new insecticides with differen...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-015-0890-1

    authors: Oxborough RM,N'Guessan R,Kitau J,Tungu PK,Malone D,Mosha FW,Rowland MW

    更新日期:2015-09-17 00:00:00

  • Validation of oral fluid samples to monitor serological changes to Plasmodium falciparum: an observational study in southern Zambia.

    abstract:BACKGROUND:In formerly endemic areas where malaria transmission has declined, levels of population immunity to Plasmodium falciparum provide information on continued malaria transmission and potentially susceptible populations. Traditional techniques for measuring serological responses to P. falciparum antigens use pla...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-10-162

    authors: Chidi AP,Chishimba S,Kobayashi T,Hamapumbu H,Mharakurwa S,Thuma PE,Moss WJ

    更新日期:2011-06-10 00:00:00

  • Spatio-temporal prevalence of malaria and anaemia in relation to agro-ecosystems in Mvomero district, Tanzania.

    abstract:BACKGROUND:Agro-ecological systems have been associated with increased malaria intensity. This study determined association between different agro-ecological systems, prevalence of malaria parasitaemia and anaemia in Mvomero district, Tanzania. METHODS:The study was carried out in three agro-ecosystems namely, savanna...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-019-2859-y

    authors: Rumisha SF,Shayo EH,Mboera LEG

    更新日期:2019-07-09 00:00:00

  • Rapid evolution of pyrethroid resistance prevalence in Anopheles gambiae populations from the cities of Douala and Yaoundé (Cameroon).

    abstract:BACKGROUND:The adaptation of malaria vectors to urban areas is becoming a serious challenge for malaria control. The study presents the evolution of pyrethroid resistance in mosquito populations from the cities of Douala and Yaoundé between 2010 and 2013. METHODS:Susceptibility tests to permethrin and deltamethrin wer...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-015-0675-6

    authors: Antonio-Nkondjio C,Tene Fossog B,Kopya E,Poumachu Y,Menze Djantio B,Ndo C,Tchuinkam T,Awono-Ambene P,Wondji CS

    更新日期:2015-04-14 00:00:00

  • Using the entomological inoculation rate to assess the impact of vector control on malaria parasite transmission and elimination.

    abstract:BACKGROUND:Prior studies have shown that annual entomological inoculation rates (EIRs) must be reduced to less than one to substantially reduce the prevalence of malaria infection. In this study, EIR values were used to quantify the impact of insecticide-treated bed nets (ITNs), indoor residual spraying (IRS), and sour...

    journal_title:Malaria journal

    pub_type: 杂志文章,评审

    doi:10.1186/1475-2875-9-122

    authors: Shaukat AM,Breman JG,McKenzie FE

    更新日期:2010-05-12 00:00:00

  • Plate-based transfection and culturing technique for genetic manipulation of Plasmodium falciparum.

    abstract::Genetic manipulation of malaria parasites remains an inefficient, time-consuming and resource-intensive process. Presented here is a set of methods for 96-well plate-based transfection and culture that improve the efficiency of genetic manipulation of Plasmodium falciparum. Compared to standard protocols plate-based t...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-11-22

    authors: Caro F,Miller MG,DeRisi JL

    更新日期:2012-01-18 00:00:00

  • The persistence of naturally acquired antibodies and memory B cells specific to rhoptry proteins of Plasmodium vivax in patients from areas of low malaria transmission.

    abstract:BACKGROUND:Rhoptries are the large, paired, secretory organelles located at the apical tip of the malaria merozoite that are considered important for parasite invasion processes. Plasmodium vivax rhoptry proteins have been shown to induce humoral immunity during natural infections. Therefore, these proteins may be pote...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-019-3009-2

    authors: Kochayoo P,Changrob S,Wangriatisak K,Lee SK,Chootong P,Han ET

    更新日期:2019-11-29 00:00:00

  • Monitoring and evaluation of malaria in pregnancy - developing a rational basis for control.

    abstract::Monitoring and evaluation of malaria control in pregnancy is essential for assessing the efficacy and effectiveness of health interventions aimed at reducing the major burden of this disease on women living in endemic areas. Yet there is no currently integrated strategic approach on how this should be achieved. Malari...

    journal_title:Malaria journal

    pub_type: 杂志文章,评审

    doi:10.1186/1475-2875-7-S1-S6

    authors: Brabin BJ,Warsame M,Uddenfeldt-Wort U,Dellicour S,Hill J,Gies S

    更新日期:2008-12-11 00:00:00

  • Artesunate-amodiaquine fixed dose combination for the treatment of Plasmodium falciparum malaria in India.

    abstract:BACKGROUND:Artemisinin-based combination therapy (ACT) has been recommended for the treatment of falciparum malaria by the World Health Organization. Though India has already switched to ACT for treating falciparum malaria, there is need to have multiple options of alternative forms of ACT. A randomized trial was condu...

    journal_title:Malaria journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/1475-2875-11-97

    authors: Anvikar AR,Sharma B,Shahi BH,Tyagi PK,Bose TK,Sharma SK,Srivastava P,Srivastava B,Kiechel JR,Dash AP,Valecha N

    更新日期:2012-03-30 00:00:00

  • Quantifying primaquine effectiveness and improving adherence: a round table discussion of the APMEN Vivax Working Group.

    abstract::The goal to eliminate malaria from the Asia-Pacific by 2030 will require the safe and widespread delivery of effective radical cure of malaria. In October 2017, the Asia Pacific Malaria Elimination Network Vivax Working Group met to discuss the impediments to primaquine (PQ) radical cure, how these can be overcome and...

    journal_title:Malaria journal

    pub_type:

    doi:10.1186/s12936-018-2380-8

    authors: Thriemer K,Bobogare A,Ley B,Gudo CS,Alam MS,Anstey NM,Ashley E,Baird JK,Gryseels C,Jambert E,Lacerda M,Laihad F,Marfurt J,Pasaribu AP,Poespoprodjo JR,Sutanto I,Taylor WR,van den Boogaard C,Battle KE,Dysoley L,Ghim

    更新日期:2018-06-20 00:00:00

  • Transcript and protein expression profile of PF11_0394, a Plasmodium falciparum protein expressed in salivary gland sporozoites.

    abstract:BACKGROUND:Plasmodium falciparum malaria is a significant problem around the world today, thus there is still a need for new control methods to be developed. Because the sporozoite displays dual infectivity for both the mosquito salivary glands and vertebrate host tissue, it is a good target for vaccine development. M...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-11-80

    authors: Schlarman MS,Roberts RN,Kariuki MM,LaCrue AN,Ou R,Beerntsen BT

    更新日期:2012-03-23 00:00:00

  • Effect of nutrient supplementation on the acquisition of humoral immunity to Plasmodium falciparum in young Malawian children.

    abstract:BACKGROUND:There is evidence that suggests that undernutrition has a detrimental effect on malarial immunity in children. The aim of the study was to discover whether nutrient supplementation improved development of malarial antibody immunity in children up to 18 months of age. METHODS:The study was conducted with a s...

    journal_title:Malaria journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/s12936-018-2224-6

    authors: Barua P,Chandrasiri UP,Beeson JG,Dewey KG,Maleta K,Ashorn P,Rogerson SJ

    更新日期:2018-02-07 00:00:00

  • High-resolution metabolomics to discover potential parasite-specific biomarkers in a Plasmodium falciparum erythrocytic stage culture system.

    abstract:BACKGROUND:Current available malaria diagnostic methods each have some limitations to meet the need for real-time and large-scale screening of asymptomatic and low density malaria infection at community level. It was proposed that malaria parasite-specific low molecular-weight metabolites could be used as biomarkers fo...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-015-0651-1

    authors: Park YH,Shi YP,Liang B,Medriano CA,Jeon YH,Torres E,Uppal K,Slutsker L,Jones DP

    更新日期:2015-03-24 00:00:00

  • A long-term follow-up study on otoacoustic emissions testing in paediatric patients with severe malaria in Gabon.

    abstract:BACKGROUND:In a previous study, severe and cerebral malaria have been connected with acute cochlear malfunction in children, demonstrated by a decrease of transitory evoked otoacoustic emissions (TEOAEs) reproducibility. This study aims to determine whether cochlear malfunction persists for 4 years after recovery from ...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-019-2840-9

    authors: Reiterer E,Reider S,Lackner P,Fischer N,Dejaco D,Riechelmann H,Zorowka P,Kremsner PG,Adegnika AA,Schmutzhard E,Schmutzhard J

    更新日期:2019-06-24 00:00:00

  • Estimation of insecticide persistence, biological activity and mosquito resistance to PermaNet® 2 long-lasting insecticidal nets over three to 32 months of use in Ethiopia.

    abstract:BACKGROUND:Information is needed on the expected durability of insecticidal nets under operational conditions. The persistence of insecticidal efficacy is important to estimate the median serviceable life of nets under field conditions and to plan for net replacement. METHODS:Deltamethrin residue levels were evaluated...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-80

    authors: Anshebo GY,Graves PM,Smith SC,Wills AB,Damte M,Endeshaw T,Shargie EB,Gebre T,Mosher AW,Patterson AE,Emerson PM

    更新日期:2014-03-06 00:00:00

  • Characterizing the effect of temperature fluctuation on the incidence of malaria: an epidemiological study in south-west China using the varying coefficient distributed lag non-linear model.

    abstract:BACKGROUND:Malaria transmission is strongly determined by the environmental temperature and the environment is rarely constant. Therefore, mosquitoes and parasites are not only exposed to the mean temperature, but also to daily temperature variation. Recently, both theoretical and laboratory work has shown, in addition...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-192

    authors: Zhao X,Chen F,Feng Z,Li X,Zhou XH

    更新日期:2014-05-27 00:00:00

  • Open-source satellite enumeration to map households: planning and targeting indoor residual spraying for malaria.

    abstract:BACKGROUND:Defining the number and location of sprayable structures (houses) is foundational to plan and monitor indoor residual spray (IRS) implementation, a primary intervention used to control the transmission of malaria. Only by mapping the location and type of all sprayable structures can IRS operations be planned...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-015-0831-z

    authors: Kamanga A,Renn S,Pollard D,Bridges DJ,Chirwa B,Pinchoff J,Larsen DA,Winters AM

    更新日期:2015-09-17 00:00:00

  • Efficacy of an insecticide paint against malaria vectors and nuisance in West Africa--part 2: field evaluation.

    abstract:BACKGROUND:Widespread resistance of the main malaria vector Anopheles gambiae to pyrethroids reported in many African countries and operational drawbacks to current IRS methods suggest the convenience of exploring new products and approaches for vector control. Insecticide paint Inesfly 5A IGR™, containing two organoph...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-341

    authors: Mosqueira B,Chabi J,Chandre F,Akogbeto M,Hougard JM,Carnevale P,Mas-Coma S

    更新日期:2010-11-25 00:00:00

  • Model variations in predicting incidence of Plasmodium falciparum malaria using 1998-2007 morbidity and meteorological data from south Ethiopia.

    abstract:BACKGROUND:Malaria transmission is complex and is believed to be associated with local climate changes. However, simple attempts to extrapolate malaria incidence rates from averaged regional meteorological conditions have proven unsuccessful. Therefore, the objective of this study was to determine if variations in spec...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-166

    authors: Loha E,Lindtjørn B

    更新日期:2010-06-16 00:00:00

  • The complexities of simple technologies: re-imagining the role of rapid diagnostic tests in malaria control efforts.

    abstract:BACKGROUND:Malaria rapid diagnostic tests (RDTs) are assumed to be simple-to-use and mobile technologies that have the capacity to standardize parasitological diagnosis for malaria across a variety of clinical settings. In order to evaluate these tests, it is important to consider how such assumptions play out in pract...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-016-1083-2

    authors: Beisel U,Umlauf R,Hutchinson E,Chandler CI

    更新日期:2016-02-05 00:00:00

  • PET-PCR method for the molecular detection of malaria parasites in a national malaria surveillance study in Haiti, 2011.

    abstract:BACKGROUND:Recently, a real-time PCR assay known as photo-induced electron transfer (PET)-PCR which relies on self-quenching primers for the detection of Plasmodium spp. and Plasmodium falciparum was described. PET-PCR assay was found to be robust, and easier to use when compared to currently available real-time PCR me...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-462

    authors: Lucchi NW,Karell MA,Journel I,Rogier E,Goldman I,Ljolje D,Huber C,Mace KE,Jean SE,Akom EE,Oscar R,Buteau J,Boncy J,Barnwell JW,Udhayakumar V

    更新日期:2014-11-26 00:00:00

  • Acceptance of a malaria vaccine by caregivers of sick children in Kenya.

    abstract:BACKGROUND:Several malaria vaccines are currently in clinical trials and are expected to provide an improved strategy for malaria control. Prior to introduction of a new vaccine, policymakers must consider the socio cultural environment of the region to ensure widespread community approval. This study investigated the ...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-172

    authors: Ojakaa DI,Jarvis JD,Matilu MI,Thiam S

    更新日期:2014-05-05 00:00:00

  • Prevalence of pfmdr1 alleles associated with artemether-lumefantrine tolerance/resistance in Maputo before and after the implementation of artemisinin-based combination therapy.

    abstract:BACKGROUND:Mozambique implemented artemisinin-based combinations therapy (ACT) using artemether-lumefantrine (AL) as the first-line treatment for uncomplicated malaria in 2009. AL remains highly efficacious, but widespread use may soon facilitate emergence of artemisinin tolerance/resistance. The prevalence of pfmdr1 d...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-300

    authors: Lobo E,de Sousa B,Rosa S,Figueiredo P,Lobo L,Pateira S,Fernandes N,Nogueira F

    更新日期:2014-08-06 00:00:00

  • Computational analysis of binding between malarial dihydrofolate reductases and anti-folates.

    abstract:BACKGROUND:Plasmodium falciparum readily develops resistance to the anti-folates pyrimethamine and proguanil via a characteristic set of mutations in the dihydrofolate reductase (PfDHFR) gene that leads to reduced competitive drug binding at the enzyme's active site. Analogous mutations can be found in the DHFR gene in...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-65

    authors: Choowongkomon K,Theppabutr S,Songtawee N,Day NP,White NJ,Woodrow CJ,Imwong M

    更新日期:2010-03-02 00:00:00

  • Assessment of parasite clearance following treatment of severe malaria with intravenous artesunate in Ugandan children enrolled in a randomized controlled clinical trial.

    abstract:BACKGROUND:Malaria control largely depends on availability of highly efficacious drugs, however, over the years, has been threatened by emergence of drug resistance. It is, therefore, important to monitor the impact of recurrent anti-malarial treatment on the long-term efficacy of anti-malarial regimens, especially in ...

    journal_title:Malaria journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/s12936-018-2552-6

    authors: Byakika-Kibwika P,Nyakato P,Lamorde M,Kiragga AN

    更新日期:2018-10-30 00:00:00

  • Factors contributing to delay in parasite clearance in uncomplicated falciparum malaria in children.

    abstract:BACKGROUND:Drug resistance in Plasmodium falciparum is common in many endemic and other settings but there is no clear recommendation on when to change therapy when there is delay in parasite clearance after initiation of therapy in African children. METHODS:The factors contributing to delay in parasite clearance, def...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-53

    authors: Sowunmi A,Adewoye EO,Gbotsho GO,Happi CT,Sijuade A,Folarin OA,Okuboyejo TM,Michael OS

    更新日期:2010-02-15 00:00:00

  • Intradermal immunization of mice with radiation-attenuated sporozoites of Plasmodium yoelii induces effective protective immunity.

    abstract:BACKGROUND:Intravenous injection of mice with attenuated Plasmodium berghei sporozoites induces sterile immunity to challenge with viable sporozoites. Non-intravenous routes have been reported to yield poor immunity. Because intravenous immunization has been considered to be unacceptable for large scale vaccination of ...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-362

    authors: Voza T,Kebaier C,Vanderberg JP

    更新日期:2010-12-15 00:00:00

  • Beneficial effect of aurothiomalate on murine malaria.

    abstract:BACKGROUND:Premature death of Plasmodium-infected erythrocytes is considered to favourably influence the clinical course of malaria. Aurothiomalate has previously been shown to trigger erythrocyte death or eryptosis, which is characterized by cell membrane scrambling leading to phosphatidylserine exposure at the cell s...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-118

    authors: Alesutan I,Bobbala D,Qadri SM,Estremera A,Föller M,Lang F

    更新日期:2010-05-07 00:00:00

  • A study of malaria vector surveillance as part of the Malaria Elimination Demonstration Project in Mandla, Madhya Pradesh.

    abstract:BACKGROUND:Understanding of malaria vector density, distribution, insecticide resistance, vector incrimination, infection status, and identification of sibling species are some of the essential components of vector control measures for achieving malaria elimination goals. METHODS:As part of the malaria elimination dem...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-020-03517-w

    authors: Mishra AK,Bharti PK,Vishwakarma A,Nisar S,Rajvanshi H,Sharma RK,Saha KB,Shukla MM,Jayswar H,Das A,Kaur H,Wattal SL,Lal AA

    更新日期:2020-12-02 00:00:00

  • Towards malaria elimination in the MOSASWA (Mozambique, South Africa and Swaziland) region.

    abstract::The substantial impact of cross-border collaborative control efforts on the burden of malaria in southern Africa has previously been demonstrated through the successes of the Lubombo Spatial Development Initiative. Increases in malaria cases recorded in the three partner countries (Mozambique, South Africa, Swaziland)...

    journal_title:Malaria journal

    pub_type: 社论

    doi:10.1186/s12936-016-1470-8

    authors: Moonasar D,Maharaj R,Kunene S,Candrinho B,Saute F,Ntshalintshali N,Morris N

    更新日期:2016-08-18 00:00:00