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Severe malaria anemia

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https://www.readbyqxmd.com/read/29754902/host-energy-source-is-important-for-disease-tolerance-to-malaria
#1
Katherine Cumnock, Avni S Gupta, Michelle Lissner, Victoria Chevee, Nicole M Davis, David S Schneider
Pathologic infections are accompanied by a collection of short-term behavioral perturbations collectively termed sickness behaviors [1, 2]. These include changes in body temperature, reduced eating and drinking, and lethargy and mimic behaviors of animals in torpor and hibernation [1, 3-6]. Sickness behaviors are important, pathogen-specific components of the host response to infection [1, 3, 7-9]. In particular, host anorexia has been shown to be beneficial or detrimental depending on the infection [7, 8]...
May 4, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29692310/gametocyte-development-and-carriage-in-ghanaian-individuals-with-uncomplicated-plasmodium-falciparum-malaria
#2
Bismarck Dinko, Felix Ansah, Comfort Agyare-Kwabi, Senyo Tagboto, Linda Eva Amoah, Britta C Urban, Colin J Sutherland, Gordon A Awandare, Kim C Williamson, Fred N Binka, Kirk W Deitsch
Plasmodium falciparum gametocytes develop over 9-12 days while sequestered in deep tissues. On emergence into the bloodstream, they circulate for varied amounts of time during which certain host factors might influence their further development. We aimed to evaluate the potential association of patient clinical parameters with gametocyte development and carriage via in vivo methods. Seventy-two patients were enrolled from three hospitals in the Volta region of Ghana in 2016. Clinical parameters were documented for all patients, and gametocyte prevalence by microscopy was estimated at 12...
April 23, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29692306/risk-factors-for-mortality-in-children-hospitalized-with-severe-malaria-in-northern-zambia-a-retrospective-case-control-study
#3
Matthew M Ippolito, Luc K Kamavu, Jean-Bertin Kabuya, Catherine Tente, Edward Chileshe, McBerth Wapachole, Philip E Thuma, Mbanga Muleba, Mike Chaponda, Modest Mulenga, William J Moss, For The Southern And Central Africa International Centers Of Excellence For Malaria Research
Malaria remains a public health crisis in areas where it has resisted control efforts. In Nchelenge District, a high- transmission area in northern Zambia, malaria accounts for more than one-third of pediatric hospitalizations and nearly one-half of hospital deaths in children. To identify risk factors for death due to malaria, we conducted a retrospective, time-matched case-control study of 126 children hospitalized with malaria who died (cases) and 126 children who survived (controls). There were no differences in age, gender, hemoglobin concentration, or prevalence of severe anemia between cases and controls...
April 23, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29609623/cross-sectional-study-on-prevalence-of-sickle-cell-alleles-s-and-c-among-patients-with-mild-malaria-in-ivory-coast
#4
Stephane Koui Tossea, Eric Gbessi Adji, Baba Coulibaly, Berenger Ako Ako, David Ngolo Coulibaly, Philippe Joly, Serge-Brice Assi, Andre Toure, Ronan Jambou
OBJECTIVES: Sickle cell anemia is due to a mutations on the betaglobin gene, inducing abnormal hemoglobin. In West Africa the main mutations lead to S or C types of hemoglobin. Patients with homozygote mutations seem protected against severe malaria, but not against mild disease. The prevalence of abnormal hemoglobin among patients attending dispensaries for mild malaria is thus unknown. A retrospective study was conducted to update data on the prevalence of S and C hemoglobin among patients attending dispensaries with mild malaria...
April 2, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29599243/erythrocytic-ferroportin-reduces-intracellular-iron-accumulation-hemolysis-and-malaria-risk
#5
De-Liang Zhang, Jian Wu, Binal N Shah, Katja C Greutélaers, Manik C Ghosh, Hayden Ollivierre, Xin-Zhuan Su, Philip E Thuma, George Bedu-Addo, Frank P Mockenhaupt, Victor R Gordeuk, Tracey A Rouault
Malaria parasites invade red blood cells (RBCs), consume copious amounts of hemoglobin, and severely disrupt iron regulation in humans. Anemia often accompanies malaria disease; however, iron supplementation therapy inexplicably exacerbates malarial infections. Here we found that the iron exporter ferroportin (FPN) was highly abundant in RBCs, and iron supplementation suppressed its activity. Conditional deletion of the Fpn gene in erythroid cells resulted in accumulation of excess intracellular iron, cellular damage, hemolysis, and increased fatality in malaria-infected mice...
March 30, 2018: Science
https://www.readbyqxmd.com/read/29573075/plasmodium-falciparum-infection-transmitted-by-transfusion-a-cause-of-hemophagocytic-syndrome-after-bone-marrow-tranplantation-in-a-non-endemic-country
#6
Saloua Ladeb, Nour Ben Abdejlil, Najla Fakhfakh, Amel Lakhal, Dorra Belloumi, Leila Ben Hamed, Aicha Kallel, Lamia Torjman, Rym El Fatimi, Slama Hmida, Kalthoum Kallel, Tarek Ben Othman
A 27-year-old man with severe aplastic anemia underwent bone marrow transplantation from his HLA identical brother in July 2016. Conditioning included ATGAM 30 mg/kg for 3 days and Cyclophosphamide 50 mg/kg for 4 days. The patient received several platelet and red blood cell transfusions before and after the conditioning. The patient received broad spectrum antibiotics and caspofungin because persistant febrile neutropenia without bacteriological or mycological documentation. Hemophagocytic syndrome was diagnosed on day +12...
March 23, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29515528/examining-the-reticulocyte-preference-of-two-plasmodium-berghei-strains-during-blood-stage-malaria-infection
#7
Neha Thakre, Priyanka Fernandes, Ann-Kristin Mueller, Frederik Graw
The blood-stage of the Plasmodium parasite is one of the key phases within its life cycle that influences disease progression during a malaria infection. The efficiency of the parasite in infecting red blood cells (RBC) determines parasite load and parasite-induced hemolysis that is responsible for the development of anemia and potentially drives severe disease progression. However, the molecular factors defining the infectivity of Plasmodium parasites have not been completely identified so far. Using the Plasmodium berghei mouse model for malaria, we characterized and compared the blood-stage infection dynamics of Pb ANKA WT and a mutant parasite strain lacking a novel Plasmodium antigen, Pb maLS_05, that is well conserved in both human and animal Plasmodium parasite strains...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29487058/reduced-red-blood-cell-deformability-in-plasmodium-knowlesi-malaria
#8
Bridget E Barber, Bruce Russell, Matthew J Grigg, Rou Zhang, Timothy William, Amirah Amir, Yee Ling Lau, Mark D Chatfield, Arjen M Dondorp, Nicholas M Anstey, Tsin W Yeo
The simian parasite Plasmodium knowlesi can cause severe and fatal human malaria. However, little is known about the pathogenesis of this disease. In falciparum malaria, reduced red blood cell deformability (RBC-D) contributes to microvascular obstruction and impaired organ perfusion. In P knowlesi infection, impaired microcirculatory flow has been observed in Macaca mulatta (rhesus macaques), unnatural hosts who develop severe and fatal disease. However, RBC-D has not been measured in human infection or in the natural host M fascicularis (long-tailed macaques)...
February 27, 2018: Blood Advances
https://www.readbyqxmd.com/read/29454051/retrospective-observational-study-of-the-use-of-artemether-lumefantrine-in-the-treatment-of-malaria-in-japan
#9
Fukumi Nakamura-Uchiyama, Yuichi Katanami, Tadashi Kikuchi, Saho Takaya, Satoshi Kutsuna, Taiichiro Kobayashi, Yasutaka Mizuno, Tetsuo Hasegawa, Michiko Koga, Yukihiro Yoshimura, Chihiro Hasegawa, Yasuyuki Kato, Mikio Kimura, Haruhiko Maruyama
BACKGROUND: The Research Group on Chemotherapy of Tropical Diseases, Japan, introduced artemether-lumefantrine (AL) in late 2002, mainly for treating uncomplicated Plasmodium falciparum malaria. Because AL was on the market in Japan in March 2017, the effectiveness and safety of AL were analyzed to help medical personnel use AL optimally. METHODS: Case report forms submitted by the attending physicians were analyzed. When necessary, direct contact with the attending physicians was made to obtain detailed information...
March 2018: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29350415/diagnoses-and-ordering-practices-driving-blood-demand-for-treatment-of-anemia-in-tanzania
#10
Ibironke W Apata, Bakary Drammeh, Anindya K De, Adam Bjork, Sonal Pathak, Magdalena Lyimo, Abdu Juma, Regina Kutaga, Mwanakheir Mahmoud, Efesper Nkya, Matthew Kuehnert, Anthony Marfin
BACKGROUND: Resource-limited countries in Africa experience blood shortages. Understanding clinical drivers of blood demand can inform strategies to increase blood availability. STUDY DESIGN AND METHODS: From a national representative sample of 42 hospitals in Tanzania, patient records and requests for whole blood (WB) and red blood cells (RBCs) to treat anemia were analyzed using data collected prospectively from June through September 2013. Abstracted data included cause of anemia, number of requested units, clinical signs, and pretransfusion hemoglobin (Hb) levels...
February 2018: Transfusion
https://www.readbyqxmd.com/read/29324864/safety-of-single-low-dose-primaquine-in-glucose-6-phosphate-dehydrogenase-deficient-falciparum-infected-african-males-two-open-label-randomized-safety-trials
#11
RANDOMIZED CONTROLLED TRIAL
Guido J H Bastiaens, Alfred B Tiono, Joseph Okebe, Helmi E Pett, Sam A Coulibaly, Bronner P Gonçalves, Muna Affara, Alphonse Ouédraogo, Edith C Bougouma, Guillaume S Sanou, Issa Nébié, John Bradley, Kjerstin H W Lanke, Mikko Niemi, Sodiomon B Sirima, Umberto d'Alessandro, Teun Bousema, Chris Drakeley
BACKGROUND: Primaquine (PQ) actively clears mature Plasmodium falciparum gametocytes but in glucose-6-phosphate dehydrogenase deficient (G6PDd) individuals can cause hemolysis. We assessed the safety of low-dose PQ in combination with artemether-lumefantrine (AL) or dihydroartemisinin-piperaquine (DP) in G6PDd African males with asymptomatic P. falciparum malaria. METHODS AND FINDINGS: In Burkina Faso, G6PDd adult males were randomized to treatment with AL alone (n = 10) or with PQ at 0...
2018: PloS One
https://www.readbyqxmd.com/read/29313573/p-vivax-malaria-presenting-as-thrombotic-microangiopathy
#12
Dharmendra Bhadauria, Harsh Vardhan, Anupma Kaul, Raj Kumar Sharma, Amit Gupta, Narayan Prasad, Manoj Jain
Introduction: Acute kidney injury (AKI) is reported to occur in patients with falciparum malaria but not uncommon with vivax malaria. AKI, anemia, thrombocytopenia and jaundice is a recurrent finding in severe malaria and can mimic as thrombotic microangiopathy (TMA). Relationship of malaria with TMA is unclear till date however evidences suggest their association. Methods & Material: We reviewed our electronic database to evaluate relationship of malaria with TMA, of cases of malaria, jaundice and AKI...
September 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29313481/case-report-severe-plasmodium-vivax-malaria-mimicking-sepsis-in-a-neonate
#13
Suryadi N N Tatura, Elizabeth Clarissa Wowor, Jose M Mandei, Rocky Wilar, Sarah M Warouw, Johnny Rompis, Priscilla Kalensang, Joseph Tuda
Severe congenital malaria associated with Plasmodium vivax is uncommon. In Indonesia, most congenital malaria cases are due to Plasmodium falciparum infections. Most cases of congenital or neonatal malaria in endemic areas are diagnosed from peripheral smear as part of routine sepsis workup. Differentiating congenital and acquired neonatal malaria is very difficult. The case presented in this study describes severe P. vivax malaria with cholestatic jaundice and sepsis-like signs and symptoms in neonates. The mother was asymptomatic and the neonate was successfully treated with intravenous artesunate...
March 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29280423/anemia-was-an-uncommon-complication-of-severe-malaria-in-a-high-transmission-rural-area-of-western-uganda
#14
Ross Boyce, Raquel Reyes, Corinna Keeler, Michael Matte, Moses Ntaro, Edgar Mulogo, Mark J Siedner
The clinical epidemiology of severe malaria among patients presenting to peripheral health centers has not been well described. We conducted a prospective, observational cohort study to describe the epidemiology and clinical manifestations of severe malaria in a highland area of declining transmission intensity in Western Uganda. Individuals presenting with a history of fever were screened with a malaria rapid diagnostic test (RDT). We prepared blood smears and conducted clinical and laboratory testing for those with a positive RDT...
March 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29276621/developing-a-novel-risk-prediction-model-for-severe-malarial-anemia
#15
E B Brickley, E Kabyemela, J D Kurtis, M Fried, A M Wood, P E Duffy
As a pilot study to investigate whether personalized medicine approaches could have value for the reduction of malaria-related mortality in young children, we evaluated questionnaire and biomarker data collected from the Mother Offspring Malaria Study Project birth cohort (Muheza, Tanzania, 2002-2006) at the time of delivery as potential prognostic markers for pediatric severe malarial anemia. Severe malarial anemia, defined here as a Plasmodium falciparum infection accompanied by hemoglobin levels below 50 g/L, is a key manifestation of life-threatening malaria in high transmission regions...
2017: Global health, epidemiology and genomics
https://www.readbyqxmd.com/read/29260654/impact-evaluation-of-seasonal-malaria-chemoprevention-under-routine-program-implementation-a-quasi-experimental-study-in-burkina-faso
#16
Thomas Druetz, Nicolas Corneau-Tremblay, Tieba Millogo, Seni Kouanda, Antarou Ly, Abel Bicaba, Slim Haddad
Seasonal malaria chemoprevention (SMC) for children < 5 is a strategy that is gaining popularity in West African countries. Although its efficacy to reduce malaria incidence has been demonstrated in trials, the effects of SMC implemented in routine program conditions, outside of experimental contexts, are unknown. In 2014 and 2015, a survey was conducted in 1,311 households located in Kaya District (Burkina Faso) where SMC had been recently introduced. All children < 72 months were tested for malaria and anemia...
February 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29244176/parvovirus-b19-is-associated-with-a-significant-decrease-in-hemoglobin-level-among-children-5-years-of-age-with-anemia-in-northwestern-tanzania
#17
Yustina A Tizeba, Mariam M Mirambo, Neema Kayange, Tumaini Mhada, Emmanuela E Ambrose, Luke R Smart, Stephen E Mshana
Parvovirus B19 (B19) can cause transient aplastic crisis and lead to acute severe anemia. This study investigated the relationship between B19 and anemia among children <5 years old in the city of Mwanza, Tanzania. An enzyme immunoassay was used to detect B19 IgM- and IgG-specific antibodies among children with various categories of anemia according to the World Health Organization (WHO) guidelines. A total of 265 children with median age of 28.5 months (interquartile range 18-39.5) were investigated. Eighty-six children (32...
December 13, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29206991/clinical-predictors-of-malaria-acute-bacterial-meningitis-and-treatment-outcomes-among-febrile-children-admitted-with-altered-mental-status-in-northwestern-tanzania
#18
Shakilu Jumanne, John Meda, Adolfine Hokororo, Kelvin Leshabari
Background: Malaria and acute bacterial meningitis (ABM) are the leading infectious causes of febrile encephalopathy in malaria endemic settings. The clinical distinction of the two conditions is complicated by overlap in clinical features. Objective: To determine the clinical predictors for malaria, ABM and treatment outcome in febrile children aged 2 months to 12 years with altered mentation at two tertiary hospitals in Northwestern Tanzania. Methods: Prospective study of 103 children to document demographic data and physical examination findings, such as level of consciousness and meningeal irritations...
November 30, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29206727/assessment-of-myocardial-function-and-injury-by-echocardiography-and-cardiac-biomarkers-in-african-children-with-severe-plasmodium-falciparum-malaria
#19
Simon Kotlyar, Peter Olupot-Olupot, Julius Nteziyaremye, Samuel O Akech, Sophie Uyoga, Rita Muhindo, Christopher L Moore, Kathryn Maitland
OBJECTIVES: Perturbed hemodynamic function complicates severe malaria. The Fluid Expansion as Supportive Therapy trial demonstrated that fluid resuscitation, involving children with severe malaria, was associated with increased mortality, primarily due to cardiovascular collapse, suggesting that myocardial dysfunction may have a role. The aim of this study was to characterize cardiac function in children with severe malaria. DESIGN: A prospective observational study with clinical, laboratory, and echocardiographic data collected at presentation (T0) and 24 hours (T1) in children with severe malaria...
March 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29169341/prevalence-genetic-variants-and-clinical-implications-of-g-6-pd-deficiency-in-burkina-faso-a-systematic-review
#20
REVIEW
Abdoul Karim Ouattara, Pouiré Yameogo, Lassina Traore, Birama Diarra, Maléki Assih, Tegwindé Rébéca Compaore, Dorcas Obiri-Yeboah, Serge Théophile Soubeiga, Florencia Wendkuuni Djigma, Jacques Simpore
BACKGROUND: It is now well-known that some antimalarials such as primaquine may induce severe hemolytic anemia in people with G-6-PD deficiency. Antimalarial drug prescriptions must, therefore take into account the patient's G-6-PD status in malaria endemic areas such as Burkina Faso, where the prevalence of this genetic abnormality is relatively high. Although great clinical heterogeneity is observed depending on the molecular nature of the deficiency and the residual enzyme activity in the red blood cell, there is very poor data on the prevalence of G-6-PD deficiency and the distribution of involved genetic variants in Burkina Faso...
November 23, 2017: BMC Medical Genetics
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