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Severe malaria anemia

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https://www.readbyqxmd.com/read/28339598/high-postdischarge-morbidity-in-ugandan-children-with-severe-malarial-anemia-or-cerebral-malaria
#1
Robert O Opoka, Karen E S Hamre, Nathan Brand, Paul Bangirana, Richard Idro, Chandy C John
Summary: Postdischarge readmission and outpatient illnesses are frequent in children with severe malarial anemia or cerebral malaria. Trials of postdischarge malaria prophylaxis in children with severe malaria should be considered. Background: Cerebral malaria (CM) and severe malarial anemia (SMA) account for a substantial proportion of malaria-related deaths in sub-Saharan Africa. However, postdischarge morbidity in children with CM or SMA has not been well established...
October 7, 2016: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28337387/pro-and-anti-inflammatory-cytokines-in-children-with-malaria-in-franceville-gabon
#2
Sandrine Lydie Oyegue-Liabagui, Aline Gaëlle Bouopda-Tuedom, Lady Charlène Kouna, Sydney Maghendji-Nzondo, Herman Nzoughe, Nina Tchitoula-Makaya, Irene Pegha-Moukandja, Jean-Bernard Lekana-Douki
Severe Plasmodium falciparum malaria anemia (SMA) is a major cause of mortality in pediatric wards. Variations in inflammatory mediator production play an essential role in disease outcomes. Indeed, several studies have shown the involvement of pro- and anti-inflammatory cytokines such as IFN-γ, IL-6, TNF-α and IL-10 in malaria immunopathology. In other hand the exact role of Th17 cytokines such as IL-17, IL-22 and IL-21 in malaria remains poorly documented. Here, we investigated IFN-γ, TNF-α, IL-6, IL-12, IL-10, IL-4, IL-13, IL-17, IL-22 and IL-21 circulating levels and their association with malaria anemia and parasitemia in Gabonese children...
2017: American Journal of Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28298924/hematological-parameters-and-hemozoin-containing-leukocytes-and-their-association-with-disease-severity-among-malaria-infected-children-a-cross-sectional-study-at-pawe-general-hospital-northwest-ethiopia
#3
Muluken Birhanu, Yaregal Asres, Wondimagegn Adissu, Tilahun Yemane, Endalew Zemene, Lealem Gedefaw
Hematological parameter changes are the most common complications in malaria. We aimed to determine the hematological parameters and hemozoin-containing leukocytes and their association with disease severity in malaria infected children aged between 1 and 15 years. A facility-based cross-sectional study was conducted at Pawe General Hospital from July 31 to December 30, 2014. Demographic and clinical data were collected using structured questionnaire. Blood specimen was collected from each study participant for hematological investigations...
2017: Interdisciplinary Perspectives on Infectious Diseases
https://www.readbyqxmd.com/read/28274886/increased-susceptibility-of-blood-type-o-individuals-to-develop-anemia-in-plasmodium-vivax-infection
#4
Sarah Stela Resende, Vanessa Gonçalves Milagres, Daniel Gonçalves Chaves, Cor Jesus Fernandes Fontes, Luzia Helena Carvalho, Tais Nobrega Sousa, Cristiana Ferreira Alves de Brito
Plasmodium vivax has been reported to cause severe malaria, and one of the main resulting complications is anemia. Considering that P. vivax infects only young erythrocytes, anemia has been associated with the destruction of infected and non-infected erythrocytes. However, few studies have focused on understanding the relationship between the pathogenesis of P. vivax malaria and human genetic polymorphisms. Although ABO groups seem to influence the outcome of Plasmodium falciparum malaria, the association between P...
March 6, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28193740/development-of-delayed-hemolytic-anemia-after-treatment-with-oral-artemether-lumefantrine-in-two-patients-with-severe-falciparum-malaria
#5
Yasuhiro Tsuchido, Fukumi Nakamura-Uchiyama, Kasumi Toyoda, Moritoshi Iwagami, Kentaro Tochitani, Koh Shinohara, Naokuni Hishiya, Taku Ogawa, Kenji Uno, Kei Kasahara, Yukiteru Ouji, Shigeyuki Kano, Keiichi Mikasa, Tsunehiro Shimizu, Masahide Yoshikawa, Haruhiko Maruyama
Recently, reports of delayed hemolytic anemia after treatment with artemisinin and its derivatives have emerged. Here we report two cases of delayed hemolytic anemia in a patient with severe falciparum malaria after treatment with oral artemether-lumefantrine (AL). The first patient, a 20-year-old Japanese male student, was diagnosed with falciparum malaria and was administered AL. As having a high parasitemia rate (20.6%) was the only severe malaria criterion met in this case and his general condition was stable, we continued with AL treatment...
February 13, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28155887/signatures-of-malaria-associated-pathology-revealed-by-high-resolution-whole-blood-transcriptomics-in-a-rodent-model-of-malaria
#6
Jing-Wen Lin, Jan Sodenkamp, Deirdre Cunningham, Katrien Deroost, Tshibuayi Christine Tshitenge, Sarah McLaughlin, Tracey J Lamb, Bradley Spencer-Dene, Caroline Hosking, Jai Ramesar, Chris J Janse, Christine Graham, Anne O'Garra, Jean Langhorne
The influence of parasite genetic factors on immune responses and development of severe pathology of malaria is largely unknown. In this study, we performed genome-wide transcriptomic profiling of mouse whole blood during blood-stage infections of two strains of the rodent malaria parasite Plasmodium chabaudi that differ in virulence. We identified several transcriptomic signatures associated with the virulent infection, including signatures for platelet aggregation, stronger and prolonged anemia and lung inflammation...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28122790/cytokine-profiles-in-malawian-children-presenting-with-uncomplicated-malaria-severe-malarial-anemia-and-cerebral-malaria
#7
Wilson L Mandala, Chisomo L Msefula, Esther N Gondwe, Mark T Drayson, Malcolm E Molyneux, Calman A MacLennan
Pro-inflammatory cytokines are involved in clearance of Plasmodium falciparum, and very high levels of these cytokines have been implicated in the pathogenesis of severe malaria. In order to determine how cytokines vary with disease severity and syndrome, we enrolled Malawian children presenting with cerebral malaria (CM), severe malarial anaemia (SMA) and uncomplicated malaria (UCM), and healthy controls. We analysed serum cytokine concentrations in acute infection, and in convalescence. With the exception of IL-5, cytokine concentrations were highest in acute CM, followed by SMA, and were only mildly elevated in UCM...
January 25, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28034892/how-i-treat-anemia-in-pregnancy-iron-cobalamin-and-folate
#8
REVIEW
Maureen M Achebe, Anat Gafter-Gvili
Anemia of pregnancy, an important risk factor for fetal and maternal morbidity, is considered a global health problem, affecting almost 50% of pregnant women. In this article, diagnosis and management of iron, cobalamin, and folate deficiencies, the most frequent causes of anemia in pregnancy, are discussed. Three clinical cases are considered. Iron deficiency is the most common cause. Laboratory tests defining iron deficiency, the recognition of developmental delays and cognitive abnormalities in iron-deficient neonates, and literature addressing the efficacy and safety of IV iron in pregnancy are reviewed...
February 23, 2017: Blood
https://www.readbyqxmd.com/read/28018860/evidencing-the-role-of-erythrocytic-apoptosis-in-malarial-anemia
#9
REVIEW
Paulo R R Totino, Cláudio T Daniel-Ribeiro, Maria de Fátima Ferreira-da-Cruz
In the last decade it has become clear that, similarly to nucleated cells, enucleated red blood cells (RBCs) are susceptible to programmed apoptotic cell death. Erythrocytic apoptosis seems to play a role in physiological clearance of aged RBCs, but it may also be implicated in anemia of different etiological sources including drug therapy and infectious diseases. In malaria, severe anemia is a common complication leading to death of children and pregnant women living in malaria-endemic regions of Africa. The pathogenesis of malarial anemia is multifactorial and involves both ineffective production of RBCs by the bone marrow and premature elimination of non-parasitized RBCs, phenomena potentially associated with apoptosis...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27980857/comparative-antibody-responses-against-three-antimalarial-vaccine-candidate-antigens-from-urban-and-rural-exposed-individuals-in-gabon
#10
Roméo-Karl Imboumy-Limoukou, Sandrine Lydie Oyegue-Liabagui, Stella Ndidi, Irène Pegha-Moukandja, Charlene Lady Kouna, Francis Galaway, Isabelle Florent, Jean Bernard Lekana-Douki
The analysis of immune responses in diverse malaria endemic regions provides more information to understand the host's immune response to Plasmodium falciparum. Several plasmodial antigens have been reported as targets of human immunity. PfAMA1 is one of most studied vaccine candidates; PfRH5 and Pf113 are new promising vaccine candidates. The aim of this study was to evaluate humoral response against these three antigens among children of Lastourville (rural area) and Franceville (urban area). Malaria was diagnosed using rapid diagnosis tests...
December 1, 2016: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/27940786/long-term-behavioral-problems-in-children-with-severe-malaria
#11
John Mbaziira Ssenkusu, James Steven Hodges, Robert Opika Opoka, Richard Idro, Elsa Shapiro, Chandy Chiramukhathu John, Paul Bangirana
BACKGROUND: Severe malaria in children is associated with long-term neurocognitive impairment, but it is unclear whether it is associated with long-term behavioral problems. METHODS: Children <5 years old with cerebral malaria (CM) or severe malarial anemia (SMA) treated at Mulago Hospital, Kampala, Uganda were assessed for behavioral outcomes at 0, 6, 12, and 24 months using the Child Behavior Checklist. Sample sizes at 0, 12, and 24 months were 122, 100, and 80 in the CM group, 130, 98, and 81 in the SMA group, and 149, 123, and 90 in healthy community control (CC) children, respectively...
November 2016: Pediatrics
https://www.readbyqxmd.com/read/27920394/blood-transfusion-delay-and-outcome-in-county-hospitals-in-kenya
#12
Julius Thomas, Philip Ayieko, Morris Ogero, Susan Gachau, Boniface Makone, Wycliffe Nyachiro, George Mbevi, Mercy Chepkirui, Lucas Malla, Jacquie Oliwa, Grace Irimu, Mike English
Severe anemia is a leading indication for blood transfusion and a major cause of hospital admission and mortality in African children. Failure to initiate blood transfusion rapidly enough contributes to anemia deaths in sub-Saharan Africa. This article examines delays in accessing blood and outcomes in transfused children in Kenyan hospitals. Children admitted with nonsurgical conditions in 10 Kenyan county hospitals participating in the Clinical Information Network who had blood transfusion ordered from September 2013 to March 2016 were studied...
February 8, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27905971/trends-causes-and-risk-factors-of-mortality-among-children-under-5-in-ethiopia-1990-2013-findings-from-the-global-burden-of-disease-study-2013
#13
Amare Deribew, Gizachew Assefa Tessema, Kebede Deribe, Yohannes Adama Melaku, Yihunie Lakew, Azmeraw T Amare, Semaw F Abera, Mesoud Mohammed, Abiy Hiruye, Efrem Teklay, Awoke Misganaw, Nicholas Kassebaum
BACKGROUND: Ethiopia has made remarkable progress in reducing child mortality over the last two decades. However, the under-5 mortality rate in Ethiopia is still higher than the under-5 mortality rates of several low- and middle-income countries (LMIC). On the other hand, the patterns and causes of child mortality have not been well investigated in Ethiopia. The objective of this study was to investigate the mortality trend, causes of death, and risk factors among children under 5 in Ethiopia during 1990-2013...
November 14, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27895843/severe-anemia-in-malawian-children
#14
Job Cj Calis, Kamija S Phiri, E Brian Faragher, Bernard J Brabin, Imelda Bates, Luis E Cuevas, Rob J de Haan, Ajib I Phiri, Pelani Malange, Mirriam Khoka, Paul Jm Hulshof, Lisette van Lieshout, Marcel Ghm Beld, Yik Y Teo, Kirk A Rockett, Anna Richardson, Dominic P Kwiatkowski, Malcolm E Molyneux, Michaël Boele van Hensbroek
BACKGROUND: Severe anemia is a major cause of sickness and death in African children, yet the causes of anemia in this population have been inadequately studied. METHODS: We conducted a case-control study of 381 preschool children with severe anemia (hemoglobin concentration, <5.0 g per deciliter) and 757 preschool children without severe anemia in urban and rural settings in Malawi. Causal factors previously associated with severe anemia were studied. The data were examined by multivariate analysis and structural equation modeling...
September 2016: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/27891065/trends-causes-and-risk-factors-of-mortality-among-children-under-5-in-ethiopia-1990-2013-findings-from-the-global-burden-of-disease-study-2013
#15
Amare Deribew, Gizachew Assefa Tessema, Kebede Deribe, Yohannes Adama Melaku, Yihunie Lakew, Azmeraw T Amare, Semaw F Abera, Mesoud Mohammed, Abiy Hiruye, Efrem Teklay, Awoke Misganaw, Nicholas Kassebaum
BACKGROUND: Ethiopia has made remarkable progress in reducing child mortality over the last two decades. However, the under-5 mortality rate in Ethiopia is still higher than the under-5 mortality rates of several low- and middle-income countries (LMIC). On the other hand, the patterns and causes of child mortality have not been well investigated in Ethiopia. The objective of this study was to investigate the mortality trend, causes of death, and risk factors among children under 5 in Ethiopia during 1990-2013...
2016: Population Health Metrics
https://www.readbyqxmd.com/read/27872735/fetal-hemoglobin-modifies-the-disease-manifestation-of-severe-plasmodium-falciparum-malaria-in-adult-patients-with-sickle-cell-anemia
#16
Prasanta Purohit, Siris Patel, Pradeep Kumar Mohanty, Padmalaya Das, Jogeswar Panigrahi
No abstract text is available yet for this article.
2016: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/27855617/eryptosis-ally-or-enemy
#17
Marilena Briglia, Maria Antonia Rossi, Caterina Faggio
Prior to senescence, erythrocytes may, experience injury which compromises their integrity and thus triggers suicidal erythrocyte death or eryptosis. This mechanism is characterised by cell shrinkage, cell membrane blebbing, and cell membrane phospholipid scrambling after phosphatidylserine exposure on the cell surface that is identified by macrophages which engulf and degrade the eryptotic cells. The term eryptosis also includes typical mechanisms, which contribute to the triggering of this process. Among them: oxidative stress, Ca2+ entry with an increase in cytosolic Ca2+ activity ([Ca ]i) and the activation of p38 kinase, which is a kinase expressed in human erythrocytes and activated after hyperosmotic shock...
November 18, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27852523/anemia-offers-stronger-protection-than-sickle-cell-trait-against-the-erythrocytic-stage-of-falciparum-malaria-and-this-protection-is-reversed-by-iron-supplementation
#18
M M Goheen, R Wegmüller, A Bah, B Darboe, E Danso, M Affara, D Gardner, J C Patel, A M Prentice, C Cerami
BACKGROUND: Iron deficiency causes long-term adverse consequences for children and is the most common nutritional deficiency worldwide. Observational studies suggest that iron deficiency anemia protects against Plasmodium falciparum malaria and several intervention trials have indicated that iron supplementation increases malaria risk through unknown mechanism(s). This poses a major challenge for health policy. We investigated how anemia inhibits blood stage malaria infection and how iron supplementation abrogates this protection...
December 2016: EBioMedicine
https://www.readbyqxmd.com/read/27835682/cytoadhesion-to-gc1qr-through-plasmodium-falciparum-erythrocyte-membrane-protein-1-in-severe-malaria
#19
Ariel Magallón-Tejada, Sónia Machevo, Pau Cisteró, Thomas Lavstsen, Pedro Aide, Mercedes Rubio, Alfons Jiménez, Louise Turner, Aida Valmaseda, Himanshu Gupta, Briegel De Las Salas, Inacio Mandomando, Christian W Wang, Jens E V Petersen, Jose Muñoz, Joaquim Gascón, Eusebio Macete, Pedro L Alonso, Chetan E Chitnis, Quique Bassat, Alfredo Mayor
Cytoadhesion of Plasmodium falciparum infected erythrocytes to gC1qR has been associated with severe malaria, but the parasite ligand involved is currently unknown. To assess if binding to gC1qR is mediated through the P. falciparum erythrocyte membrane protein 1 (PfEMP1) family, we analyzed by static binding assays and qPCR the cytoadhesion and var gene transcriptional profile of 86 P. falciparum isolates from Mozambican children with severe and uncomplicated malaria, as well as of a P. falciparum 3D7 line selected for binding to gC1qR (Pf3D7gC1qR)...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27818359/delayed-haemolysis-secondary-to-treatment-of-severe-malaria-with-intravenous-artesunate-report-on-the-experience-of-a-referral-centre-for-tropical-infections-in-spain
#20
Teresa Aldámiz-Echevarría Lois, Ana López-Polín, Francesca F Norman, Begoña Monge-Maillo, Rogelio López-Vélez, Jose A Perez-Molina
BACKGROUND: Post-artesunate delayed haemolysis is described as hemolytic anemia presenting days after malaria treatment in hyperparasitemic patients. Physiopathological mechanisms and clinical manifestations have not been thoroughly characterised. METHODS: We conducted a retrospective study of hospitalised malaria patients who received artemisinin derivatives from January 1, 2010 to December 31, 2015. RESULTS: 21 patients were included in the study: 11 travellers, 8 travellers visiting friends and relatives and 2 immigrants...
November 3, 2016: Travel Medicine and Infectious Disease
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