Read by QxMD icon Read

Severe malaria anemia

Kawsar R Talaat, Ruth D Ellis, Janet Hurd, Autumn Hentrich, Erin Gabriel, Noreen A Hynes, Kelly M Rausch, Daming Zhu, Olga Muratova, Raul Herrera, Charles Anderson, David Jones, Joan Aebig, Sarah Brockley, Nicholas J MacDonald, Xiaowei Wang, Michael P Fay, Sara A Healy, Anna P Durbin, David L Narum, Yimin Wu, Patrick E Duffy
Transmission-blocking vaccines (TBVs) that target sexual stage parasite development could be an integral part of measures for malaria elimination. Pfs25 is a leading TBV candidate, and previous studies conducted in animals demonstrated an improvement of its functional immunogenicity after conjugation to EPA, a recombinant, detoxified ExoProtein A from Pseudomonas aeruginosa. In this report, we describe results of an open-label, dose-escalating Phase 1 trial to assess the safety and immunogenicity of Pfs25-EPA conjugates formulated with Alhydrogel®...
2016: PloS One
Krzysztof Mikołajczyk, Radosław Kaczmarek, Marcin Czerwiński
Transcription factor EKLF (Erythroid Krüppel-Like Factor) belongs to the group of Krüppellike factors, which regulate proliferation, differentiation, development and apoptosis of mammalian cells. EKLF factor is present in erythroid cells, where it participates in regulation of hematopoiesis, expression of genes encoding transmembrane proteins (including blood group antigens), and heme biosynthesis enzymes. It is also a key factor in downregulation of γ-globins and activation of β-globin gene expression...
October 6, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
Nathan R Brand, Robert O Opoka, Karen E S Hamre, Chandy C John
Lactic acidosis (LA) is a marker for mortality in severe malaria, but the mechanisms that lead to LA in the different types of severe malaria and the extent to which LA-associated mortality differs by type of severe malaria are not well described. We assessed the frequency of LA in children admitted to Mulago Hospital, Kampala, Uganda with cerebral malaria (CM, n = 193) or severe malarial anemia (SMA, n = 216). LA was compared to mortality and measures of parasite biomass and sequestration (P. falciparum histidine-rich protein-2 (PfHRP2) concentration, platelet count), and to a measure of systemic tissue oxygen delivery (hemoglobin level)...
2016: PloS One
Chloé Latour, Myriam F Wlodarczyk, Grace Jung, Aurélie Gineste, Nicolas Blanchard, Tomas Ganz, Marie-Paule Roth, Hélène Coppin, Léon Kautz
Malaria, a major global health challenge worldwide, is accompanied by a severe anemia secondary to hemolysis and increased erythrophagocytosis. Iron is an essential functional component of erythrocyte hemoglobin and its availability is controlled by the liver-derived hormone hepcidin. We examined the regulation of hepcidin during malarial infection in mice using the rodent parasite Plasmodium berghei K173 (PbK). Mice infected with PbK develop a severe anemia and die after 18 to 22 days without cerebral malaria...
September 22, 2016: Haematologica
Prakasha Kempaiah, Karol Dokladny, Zachary Karim, Evans Raballah, John M Ong'echa, Pope L Moseley, Douglas J Perkins
Severe malarial anemia [SMA, hemoglobin (Hb) <5.0 g/dL] is a leading cause of global morbidity and mortality among children residing in Plasmodium falciparum transmission regions. Exploration of molecular pathways through global gene expression profiling revealed that SMA was characterized by decreased HSPA1A, a heat shock protein (Hsp) 70 coding gene. Hsp70 is a ubiquitous chaperone that regulates Nuclear Factor-kappa B (NF-κB) signaling and production of pro-inflammatory cytokines known to be important in malaria pathogenesis (e...
August 30, 2016: Molecular Medicine
Rama Prakasha Saya, Ganesh Kumar Saya, Goswami Debabrata
BACKGROUND: The recent focus is on the increase in the burden of falciparum cases with a varied spectrum of presentation and outcome, especially in developing countries like India. This study was undertaken to analyze the trend and manifestations of falciparum malaria in a tertiary care hospital. MATERIALS AND METHODS: This descriptive study was carried out at the Gauhati Government Medical College and Hospital from June 2006 to May 2007. The data were collected on demographic and time characteristics, clinical and laboratory findings, the outcome of disease and expressed in proportion or percentages...
2016: Advanced Biomedical Research
Yohannes Demissie, Tsige Ketema
BACKGROUND: Malaria is still a major health problem in some parts of the world. Plasmodium falciparum is the common pathogenic parasite and is responsible for majority of malaria associated deaths. Recently the other benign parasite, P. vivax, is reported to cause life threatening severe malaria complications. Thus, this study was aimed to assess incidence of severe malaria symptoms caused by P. vivax parasite in some malaria endemic areas of Ethiopia. MATERIALS AND METHODS: Presumptive malaria patients (all age groups) seeking medication at the selected health facilities in Mendi town, Northwest Ethiopia, were recruited for the study...
2016: BMC Infectious Diseases
Bao Quoc Lam, Nhi My Dang, Nguyen Tien Huy, Shinjiro Hamano, Kenji Hirayama
Tacrolimus and mycophenolate mofetil are immuno-suppressants frequently used in human organ transplantation. Tacrolimus is also reported to inhibit Plasmodium falciparum growth in vitro. Here, we report that tacrolimus prevented P. berghei ANKA infected C57BL/6J mice death from cerebral malaria, but not the death from malaria due to the high parasitaemia and severe anemia. The mycophenolate mofetil-treated mice showed higher mortality form cerebral malaria and succumbed to malaria earlier than tacrolimus-treated littermates...
August 22, 2016: Immunology
Anju Kochar, Paavan Kalra, Vijeth Sb, Vinayak Ukirade, Anita Chahar, Dhanpat Kumar Kochar, Sanjay Kumar Kochar
Malarial retinopathy is a set of retinal signs in severe malaria due to falciparum malaria. With increased recognition of severe manifestations of vivax malaria, a systematic study to evaluate retinal changes in vivax malaria could elaborate our knowledge about this neglected entity. This observational study included retinal examination of 104 adult patients (>14 years) with varying severity of vivax malaria admitted to a tertiary care center during peak seasons of 2012 and 2013. Thirty-eight percent of severe cases had a retinal sign as compared to 6% of non-severe cases (p < 0...
June 2016: Pathogens and Global Health
Aggrey Dhabangi, Brenda Ainomugisha, Christine Cserti-Gazdewich, Henry Ddungu, Dorothy Kyeyune, Ezra Musisi, Robert Opoka, Christopher P Stowell, Walter H Dzik
Importance: Severe anemia, defined as a hemoglobin level of less than 5.0 g/dL, affects millions of children worldwide. The brain has a high basal demand for oxygen and is especially vulnerable to hypoxemia. Previous studies have documented neurocognitive impairment in children with severe anemia. Data on cerebral tissue oxygenation in children with severe anemia and their response to blood transfusion are limited. Objective: To measure hemoglobin saturation in cerebral tissue (cerebral tissue oxygen saturation [tSo2]) before, during, and after blood transfusion in a cohort of children presenting to hospital with severe anemia...
October 1, 2016: JAMA Pediatrics
Robyn E Elphinstone, Andrea L Conroy, Michael Hawkes, Laura Hermann, Sophie Namasopo, H Shaw Warren, Chandy C John, W Conrad Liles, Kevin C Kain
BACKGROUND: Malaria remains a major cause of global mortality. Extracellular heme, released during malaria-induced hemolysis, mediates a number of pathogenic processes associated with vascular and organ injury. Hemopexin (hpx) facilitates the degradation of extracellular heme. In this study, we explore the hypothesis that dysregulation of the heme-hpx axis is associated with disease severity, acute kidney injury (AKI), and outcome. METHODS: Plasma levels of hemin and hpx (at admission, day 3, and day 14) were assessed in children with severe malaria in Jinja, Uganda...
October 15, 2016: Journal of Infectious Diseases
Sawsan Amireh, Hamid Shaaban, Gunwant Guron
Malaria-related hemophagocytic lymphohistiocytosis is a rare, potentially fatal, hyperinflammatory disease entity which can be challenging to diagnose and treat. It is usually associated with Plasmodium falciparum infection. It is less frequently associated with Plasmodium vivax. Here we report an unusual case of a 23-year-old healthy Nigerian man who presented with fever, microangiopathic hemolytic anemia, acute renal failure, and confusion, and was diagnosed as having cerebral malaria-related hemophagocytic lymphohistiocytosis caused by P...
August 6, 2016: Hematology/oncology and Stem Cell Therapy
Iee Ho Choi, Pyoung Han Hwang, Sam Im Choi, Dae Yeol Lee, Min Sun Kim
Prompt malaria diagnosis is crucial so antimalarial drugs and supportive care can then be rapidly initiated. A 15-year-old boy who had traveled to Africa (South Africa, Kenya, and Nigeria between January 3 and 25, 2011) presented with fever persisting over 5 days, headache, diarrhea, and dysuria, approximately 17 days after his return from the journey. Urinalysis showed pyuria and hematuria. Blood examination showed hemolytic anemia, thrombocytopenia, disseminated intravascular coagulation, and hyperbilirubinemia...
September 2016: Journal of Korean Medical Science
Sydney Maghendji-Nzondo, Hermann Nzoughe, Guy Joseph Lemamy, Lady Charlene Kouna, Irene Pegha-Moukandja, Faustin Lekoulou, Bertrand Mbatchi, Fousseyni Toure-Ndouo, Jean Bernard Lekana-Douki
Recently, major progress has been made in controlling malaria in Africa. However, in Gabon, little information is available on the role of malaria in childhood febrile syndromes, the use and efficacy of preventive measures, and Plasmodium species distribution. Here, we characterized malaria in febrile children in Franceville, Gabon through a cross-sectional study at the pediatric unit of the Franceville Regional Hospital. We registered 940 febrile children. Their general condition was markedly altered in 11...
2016: Parasite: Journal de la Société Française de Parasitologie
Florian Kurth, Tilman Lingscheid, Florian Steiner, Miriam S Stegemann, Sabine Bélard, Nikolai Menner, Peter Pongratz, Johanna Kim, Horst von Bernuth, Beate Mayer, Georg Damm, Daniel Seehofer, Abdulgabar Salama, Norbert Suttorp, Thomas Zoller
Episodes of delayed hemolysis 2-6 weeks after treatment of severe malaria with intravenous artesunate have been described. We performed a prospective observational study of patients with uncomplicated malaria to investigate whether posttreatment hemolysis also occurs after oral artemisinin-based combination therapy. Eight of 20 patients with uncomplicated malaria who were given oral artemisinin-based combination therapy met the definition of posttreatment hemolysis (low haptoglobin level and increased lactate dehydrogenase level on day 14)...
August 2016: Emerging Infectious Diseases
Gregory C Davenport, James B Hittner, Vincent Otieno, Zachary Karim, Harshini Mukundan, Paul W Fenimore, Nicolas W Hengartner, Benjamin H McMahon, Prakasha Kempaiah, John M Ong'echa, Douglas J Perkins
Bacteremia and malaria coinfection is a common and life-threatening condition in children residing in sub-Saharan Africa. We previously showed that coinfection with Gram negative (G[-]) enteric Bacilli and Plasmodium falciparum (Pf[+]) was associated with reduced high-density parasitemia (HDP, >10,000 parasites/μL), enhanced respiratory distress, and severe anemia. Since inflammatory mediators are largely unexplored in such coinfections, circulating cytokines were determined in four groups of children (n = 206, aged <3 yrs): healthy; Pf[+] alone; G[-] coinfected; and G[+] coinfected...
2016: Mediators of Inflammation
Habib Md Reazaul Karim, Prithwis Bhattacharyya, Sonai Datta Kakati, Tridip Jyoti Borah, Md Yunus
Scrub typhus and malaria can involve multiple organ systems and are notoriously known for varied presentations. However, clinical malaria or scrub typhus is unusual without fever. On the other hand, altered sensorium with or without fever, dehydration, hemorrhage and hemolysis may lead to low blood pressure. Presence of toxic granules and elevated band forms in such patients can even mimic sepsis. When such a patient is in the peripartum period, it creates a strong clinical dilemma for the physician especially in unbooked obstetric cases...
2016: Qatar Medical Journal
Ezekiel O Adekanmbi, Massaro W Ueti, Brady Rinaldi, Carlos E Suarez, Soumya K Srivastava
Babesia species are obligate intraerythrocytic tick-borne protozoan parasites that are the etiologic agents of babesiosis, a potentially life-threatening, malaria-like illness in humans and animals. Babesia-infected people have been known to suffer from complications including liver problems, severe hemolytic anemia, and kidney failure. As reported by the Food and Drug Administration, 38% of mortality cases observed in transfusion recipients were associated with transfusion transmitted diseases of which babesiosis is the chief culprit...
May 2016: Biomicrofluidics
Hatim G Eltahir, Jalal Ali Bilal, Elrazy A Ali, Ishag Adam
BACKGROUND: There are few publications on anemia following artesunate treatment. OBJECTIVE: To investigate the hemoglobin in patients with severe Plasmodium falciparum malaria treated with artesunate or quinine. METHODS: Patients with P. falciparum (in Singa, Sudan) were treated by intravenous artesunate or quinine. Hemoglobin was measured initially, at day 14 and day 28. RESULTS: The mean (SD) of the age was 10.3 (10...
June 30, 2016: Journal of Tropical Pediatrics
Elizabeth B Brickley, Natasha Spottiswoode, Edward Kabyemela, Robert Morrison, Jonathan D Kurtis, Angela M Wood, Hal Drakesmith, Michal Fried, Patrick E Duffy
Hepcidin, the master regulator of bioavailable iron, is a key mediator of anemia and also plays a central role in host defense against infection. We hypothesized that measuring hepcidin levels in cord blood could provide an early indication of interindividual differences in iron regulation with quantifiable implications of anemia, malaria, and mortality-related risk. Hepcidin concentrations were measured in cord plasma from a birth cohort (N = 710), which was followed for up to 4 years in a perennial malaria transmission region in Muheza, Tanzania (2002-2006)...
June 27, 2016: American Journal of Tropical Medicine and Hygiene
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"