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Nonsynonymous amino acid changes in the α-chain of complement component 5 influence longitudinal susceptibility to Plasmodium falciparum infections and severe malarial anemia in kenyan children

Raballah, Evans; Wilding, Kristen; Anyona, Samuel B.; Munde, Elly O.; Hurwitz, Ivy; Onyango, Clinton O.; Ayieko, Cyrus; Lambert, Christophe G.; Schneider, Kristan A.; Seidenberg, Philip D.; Ouma, Collins; McMahon, Benjamin H.; Cheng, Qiuying; Perkins, Douglas J. (Frontier in genetics, 2022-08-14)

Background: Severe malarial anemia (SMA; Hb < 5.0 g/dl) is a leading cause of childhood morbidity and mortality in holoendemic Plasmodium falciparum transmission regions such as western Kenya. Methods: We investigated ...

Entire Expressed Peripheral Blood Transcriptome in Pediatric Severe Malarial Anemia

Anyona, Samuel; Cheng, Qiuying; Guo, Yan; Raballah, Evans; Hurwitz, Ivy; Onyango, Clinton; Seidenberg, Philip; Schneider, Kristan; Lambert, Christophe; McMahon, Benjamin; Ouma, Collins; Perkins, Douglas (Research Square, 2023-06-19)

This study on severe malarial anemia (SMA: Hb < 6.0 g/dL), a leading global cause of childhood morbidity and mortality, analyzed the entire expressed transcriptome in whole blood from children with non-SMA (Hb ≥ 6.0 g/dL, ...

Complement component 3 mutations alter the longitudinal risk of pediatric malaria and severe malarial anemia

Raballah, Evans; Anyona, Samuel B; Cheng, Qiuying; Munde, Elly O; Hurwitz, Ivy-Foo; Onyango, Clinton; Ndege, Caroline; Hengartner, Nicolas W; Pacheco, Maria Andreína; Escalante, Ananias A; Lambert, Christophe G; Ouma, Collins; Obama, Henri C Jr T; Schneider, Kristan A; Seidenberg, Philip D; McMahon, Benjamin H; Perkins, Douglas J (Experimental Biology and Medicine, 2021-11-19)

Severe malarial anemia (SMA) is a leading cause of childhood morbidity and mortality in holoendemic Plasmodium falciparum transmission regions. To gain enhanced understanding of predisposing factors for SMA, we explored ...

Genome Sequence of a Staphylococcus xylosus Clinical Isolate, Strain SMA0341-04 (UGA5), from Siaya County Referral Hospital in Siaya, Kenya

Cheng, Qiuying; Xie, Gary; Daligault, Hajnalka; Davenport, Karen; Gleasner, Cheryl; Jacobs, Lindsey; Kubicek-Sutherland, Jessica; LeCuyer, Tessa; Otieno, Vincent; Raballah, Evans; Doggett, Norman; McMahon, Benjamin; Perkins, Douglas J.; Mukundan, Harshini (ASM Journals, 2019-04-18)

We report here the genome sequence of a Staphylococcus xylosus clinical isolate, strain SMA0341-04 (UGA5), which contains one chromosome and at least one plasmid. Notably, strain SMA0341-04 (UGA5) contains the tetracycline ...

Direct detection of bacteremia by exploiting host-pathogen interactions of lipoteichoic acid and lipopolysaccharide

Kubicek-Sutherland, Jessica Z.; Vu, Dung M.; Aneesa, Noormohamed; Mendez, Heather M.; Stromberg, Loreen R.; Pedersen, Christine A.; Hengartner, Astrid C.; Klosterman, Katja E.; Haley, A. Bridgewater; Otieno, Vincent; Cheng, Qiuying; Anyona, Samuel B.; Ouma, Collins; Raballah, Evans; Perkins, Douglas J.; McMahon, Benjamin H.; Mukundan, Harshini (Scientific Reports, 2019-04-17)

Bacteremia is a leading cause of death in sub-Saharan Africa where childhood mortality rates are the highest in the world. The early diagnosis of bacteremia and initiation of treatment saves lives, especially in high-disease ...

Human NCR3 gene variants rs2736191 and rs11575837 alter longitudinal risk for development of pediatric malaria episodes and severe malarial anemia

Olewe, Perez K.; Cheng, Qiuying; Munde, Elly O.; Raballah, Evans; Anyona, Samuel B.; McMahon, Benjamin H.; Lambert, Christophe G.; Onyango, Patrick O.; Schneider, Kristan A.; Perkins, Douglas J.; Ouma, Collins (Springer Link, 2023-09-13)

Background Plasmodium falciparum malaria is a leading cause of pediatric morbidity and mortality in holoendemic transmission areas. Severe malarial anemia [SMA, hemoglobin (Hb) < 5.0 g/dL in children] is the most common ...

Cyclooxygenase-2 haplotypes influence the longitudinal risk of malaria and severe malarial anemia in Kenyan children from a holoendemic transmission region.

Anyona, Samuel B; Hengartner, Nicolas W; Raballah, Evans; Ong'echa, John Michael; Lauve, Nick; Cheng, Qiuying; Fenimore, Paul W; Ouma, Collins; Lambert, Christophe G; McMahon, Benjamin H; Perkins, Douglas J (Journal of Human Genetics, 2019-10-29)

Cyclooxygenase-2 [(COX-2) or prostaglandin endoperoxide H2 synthase-2 (PTGS-2)] induces the production of prostaglandins as part of the host-immune response to infections. Although a number of studies have demonstrated the ...

Comparative genomic and phenotypic characterization of invasive non-typhoidal Salmonella isolates from Siaya, Kenya

Kubicek-Sutherland, Jessica Z.; Xie, Gary; Shakya, Migun; Dighe, Priya K.; Jacobs, Lindsey L.; Daligault, Hajnalka; Davenport, Karen; Stromberg, Loreen R.; Stromberg, Zachary R.; Cheng, Qiuying; Kempaiah, Prakasha; Ong’echa, John Michael; Otieno, Vincent; Raballah, Evans; Anyona, Samuel; Ouma, Collins; Chain, Patrick S. G.; Perkins, Douglas J.; Mukundan, Harshini; McMahon, Benjamin H.; Doggett, Norman A. (PLOS ONE, 2021-01-01)

Non-typhoidal Salmonella (NTS) is a major global health concern that often causes bloodstream infections in areas of the world affected by malnutrition and comorbidities such as HIV and malaria. Developing a strategy to ...

Draft Genome Sequences of Two Staphylococcus warneri Clinical Isolates, Strains SMA0023-04 (UGA3) and SMA0670-05 (UGA28), from Siaya County Referral Hospital, Siaya, Kenya.

Xie, Gary; Cheng, Qiuying; Daligault, Hajnalka; Davenport, Karen; Gleasner, Cheryl; Jacobs, Lindsey; Kubicek-Sutherland, Jessica; LeCuyer, Tessa; Otieno, Vincent; Raballah, Evans; Doggett, Norman; Mukundan, Harshini; Perkins, Douglas J.; McMahon, Benjamin (ASM Journals, 2019-04-11)

We report the complete draft genome sequences of two Staphylococcus warneri clinical isolates, strains SMA0023-04 (UGA3) and SMA0670-05 (UGA28), each of which contains one chromosome and at least one plasmid. Isolate ...

Changes in the frequencies of Plasmodium falciparum dhps and dhfr drug-resistant mutations in children from Western Kenya from 2005 to 2018: the rise of Pfdhps S436H

Pacheco, M. Andreína; Schneider, Kristan A.; Cheng, Qiuying; Munde, Elly O.; Ndege, Caroline; Onyango, Clinton; Raballah, Evans; Anyona, Samuel B.; Ouma, Collins; Perkins, Douglas J.; Escalante, Ananias A. (Malaria Journal, 2020-10-22)

Background Sulfadoxine-pyrimethamine (SP) is the only anti-malarial drug formulation approved for intermittent preventive treatment in pregnancy (IPTp). However, mutations in the Plasmodium falciparum dhfr (Pfdhfr) and ...