Browsing Gold Collection by Author "Ouma, Collins"
Now showing items 21-32 of 32
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HIV-1 protease inhibitor drug resistance in Kenyan antiretroviral treatment-naive and -experienced injection drug users and non-drug users
Budambula, Valentine; Musumba, Francis O.; Webale, Mark K.; Kahiga, Titus M.; Owuor, Francisca Ongecha; Kiarie, James N.; Sowayi, George A.; Ahmed, Aabid A.; Ouma, Collins; Were, Tom (AIDS Research and Therapy, 2015-08-15)Background Although injection drug use drives antiretroviral drug resistance, the prevalence of protease inhibitor (PI) resistance among Kenyan IDUs remains undetermined. We, therefore, explored PI resistance mutations ... -
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 ... -
Human NCR3 gene variants rs2736191 and rs11575837 alter longitudinal risk for development of pediatric malaria episodes and severe malarial anemia
Olewe, Perez K.; Awandu, Shehu Shagari; Munde, Elly O.; Anyona, Samuel B.; Raballah, Evans; Amolo, Asito S.; Ogola, Sidney; Ndenga, Erick; Onyango, Clinton O.; Rochford, Rosemary; Perkins, Douglas J.; Ouma, Collins (BMC Cancer, 2023-06-20)Background Epstein Barr virus (EBV)-associated endemic Burkitt’s Lymphoma pediatric cancer is associated with morbidity and mortality among children resident in holoendemic Plasmodium falciparum regions in western Kenya. ... -
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 ... -
Interleukin (IL)-13 promoter polymorphisms (-7402 T/G and -4729G/A) condition susceptibility to pediatric severe malarial anemia but not circulating IL-13 levels
Okeyo, Winnie A; Munde, Elly O; Okumu, Wilson; Raballah, Evans; Anyona, Samuel B; Vulule, John M; Ong’echa, John M; Perkins, Douglas J; Ouma, Collins (BMC Immunology, 2013-03-25)In holoendemic Plasmodium falciparum transmission areas such as western Kenya, severe malarial anemia [SMA, hemoglobin (Hb) < 6.0 g/dL, with any density parasitemia] is the most common clinical manifestation of severe ... -
Interleukin (IL)-13 promoter polymorphisms (-7402 T/G and -4729G/A) condition susceptibility to pediatric severe malarial anemia but not circulating IL-13 levels
Okeyo, Winnie A; Munde, Elly O; Okumu, Wilson; Raballah, Evans; Anyona, Samuel B; Vulule, John M; Ong’echa, John M; Perkins, Douglas J; Ouma, Collins (BMC Imunology, 2013-03-25)n holoendemic Plasmodium falciparum transmission areas such as western Kenya, severe malarial anemia [SMA, hemoglobin (Hb) < 6.0 g/dL, with any density parasitemia] is the most common clinical manifestation of severe malaria ... -
Interleukin (IL)-13 promoter polymorphisms (-7402 T/G and -4729G/A) condition susceptibility to pediatric severe malarial anemia but not circulating IL-13 levels.
Okeyo, Winnie A; Munde, Elly O; Okumu, Wilson; Raballah, Evans; Anyona, Samuel B; Vulule, John M; Ong’echa, John M; Perkins, Douglas J; Ouma, Collins (BMC Immunology, 2013-03-13)In holoendemic Plasmodium falciparum transmission areas such as western Kenya, severe malarial anemia [SMA, hemoglobin (Hb) < 6.0 g/dL, with any density parasitemia] is the most common clinical manifestation of severe ... -
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 ... -
Polymorphisms in the Fc Gamma Receptor IIIA and Toll-Like Receptor 9 Are Associated with Protection against Severe Malarial Anemia and Changes in Circulating Gamma Interferon Levels
Munde, Elly O.; Okeyo, Winnie A.; Anyona, Samwel B.; Raballah, Evans; Konah, Stephen; Okumu, Wilson; Ogonda, Lilian; Vulule, John; Ouma, Collins (ASM Journals, 2012-11-12)An understanding of the immunogenetic basis of naturally acquired immunity to Plasmodium falciparum infection would aid in the designing of a rationally based malaria vaccine. Variants within the Fc gamma receptors (FcγRs) ... -
The role of mycobacterium tuberculosis antigen specific cytokines in determination of acid fast bacilli culture status in pulmonary tuberculosis patients co-infected with human immunodeficiency virus
Kisuya, Job; Chemtai, Alex; Raballah, Evans; Okumu, Wilson; Keter, Alfred; Ouma, Collins (The Pan African Medical Journal, 2018-11-08)Introduction: the interaction between Mycobacterium tuberculosis and HIV leads to rapid progression of tuberculosis (TB) and human immunodeficiency virus (HIV)-induced immunosuppression. Diagnosis of TB in these patients ... -
Self-reported Provision of Preconception Care and Associated Factors
Morema, Everlyne N; Ouma, Collins; Egessa, Robert; Nyachiro, Lydia; Shisanya, Morris (The East African Health Research Journal (EAHRJ), 2024-03-28)Background: Preconception care (PCC) is the provision of health interventions to women and couples before conception occurs and is valuable in promoting healthy maternal, birth, and neonatal health outcomes. In Africa, ...