Browsing by Author "Cheng, Qiuying"
Now showing items 1-17 of 17
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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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Differential Gene Expression in Host Ubiquitination Processes in Childhood Malarial Anemia
Anyona, Samuel B.; Raballah, Evans; Cheng, Qiuying; Hurwitz, Ivy; Ndege, Caroline; Munde, Elly; Otieno, Walter; Seidenberg, Philip D.; Schneider, Kristan A.; Lambert, Christophe G.; McMahon, Benjamin H.; Ouma, Collins; Perkins, Douglas J. (Frontiers in Genetics, 2021-11-22)Background: Malaria remains one of the leading global causes of childhood morbidity and mortality. In holoendemic Plasmodium falciparum transmission regions, such as western Kenya, severe malarial anemia [SMA, hemoglobin ... -
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 ... -
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 ... -
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, ... -
Genetic variation in CSF2 (5q31.1) is associated with longitudinal susceptibility to pediatric malaria, severe malarial anemia, and all-cause mortality in a high-burden malaria and HIV region of Kenya
Kisia, Lily E.; Cheng, Qiuying; Raballah, Evans; Munde, Elly O.; McMahon, Benjamin H.; Hengartner, Nick W.; Ong’echa, John M.; Chelimo, Kiprotich; Lambert, Christophe G.; Ouma, Collins; Kempaiah, Prakasha; Perkins, Douglas J.; Schneider, Kristan A.; Anyona, Samuel B. (Tropical Medicine and Health, 2022-06-25)Plasmodium falciparum infections remain among the leading causes of morbidity and mortality in holoendemic transmission areas. Located within region 5q31.1, the colony-stimulating factor 2 gene (CSF2) encodes granulocyte ... -
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 ... -
Genome Sequence of Staphylococcus pettenkoferi Strain SMA0010-04 (UGA20), a Clinical Isolate from Siaya County Referral Hospital in Siaya, Kenya
Otieno, Vincent; Xie, Gary; Cheng, Qiuying; Daligault, Hajnalka; Davenport, Karen; Gleasner, Cheryl; Jacobs, Lindsey; Kubicek-Sutherland, Jessica; LeCuyer, Tessa; Raballah, Evans; Doggett, Norman; Mukundan, Harshini; McMahon, Benjamin; Perkins, Douglas J (Microbiology Resource Announcements, 2019-04-25)Here, we report the sequence of a Staphylococcus pettenkoferi clinical isolate, strain SMA0010-04 (UGA20), which contains the PC1 beta-lactamase (blaZ) gene. -
Genome Sequences of a Staphylococcus aureus Clinical Isolate, Strain SMA0034-04 (UGA22), from Siaya County Referral Hospital in Siaya, Kenya
Xie, Gary; Cheng, Qiuying; Daligault, Hajnalka; Davenport, Karen; Gleasner, Cheryl; Jacobs, Lindsey; Sutherland, Jessica Kubicek; LeCuyer, Tessa; Otieno, Vincent; Raballah, Evans; Mukundan, Harshini; Perkins, Douglas J; McMahon, Benjamin; Doggett, Norman (ASM Journals, 2019-04-25)Here, we report the genome sequences of a Staphylococcus aureus clinical isolate, strain SMA0034-04 (UGA22), which contains one chromosome and one plasmid. We also reveal that isolate SMA0034-04 (UGA22) contains loci in ... -
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 ... -
Ingestion of hemozoin by peripheral blood mononuclear cells alters temporal gene expression of ubiquitination processes
Anyona, Samuel B.; Cheng, Qiuying; Raballah, Evans; Hurwitz, Ivy; Lambert, Christophe G.; McMahon, Benjamin H.; Ouma, Collins; Perkins, Douglas J. (Biochemistry and Biophysics Reports, 2022-01-11)Plasmodium falciparum (Pf) malaria is among the leading causes of childhood morbidity and mortality worldwide. During a natural infection, ingestion of the malarial parasite product, hemozoin (PfHz), by circulating phagocytic ... -
Integrated OMICS platforms identify LAIR1 genetic variants as novel predictors of cross-sectional and longitudinal susceptibility to severe malaria and all-cause mortality in Kenyan children
Achieng, Angela O.; Hengartner, Nicolas W.; Raballah, Evans; Cheng, Qiuying; Anyona, Samuel B.; Lauve, Nick; Guyah, Bernard; Foo-Hurwitz, Ivy; Ong'echa, John M.; McMahon, Benjamin H.; Ouma, Collins; Lambert, Christophe G.; Perkinsa, Douglas J. (EBioMedicine, 2019-07-02)Background Severe malarial anaemia (SMA) is a leading cause of childhood mortality in holoendemic Plasmodium falciparum regions. Methods To gain an improved understanding of SMA pathogenesis, whole genome and transcriptome ... -
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 ...