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22 results on '"Molyneux M"'

1. Genome-wide and fine-resolution association analysis of malaria in West Africa

Author

Muminatou, Jallow, Yik Ying Teo, Small, Kerrin S., Rockett, Kirk A., Panos, Deloukas, Clark, Taane G., Katja, Kivinen, Bojang, Kalifa A., Conway, David J., Margaret, Pinder, Giorgio, Sirugo, Fatou Sisay Joof, Stanley, Usen, Sarah, Auburn, Bumpstead, Suzannah J., Susana, Campino, Alison, Coffey, Andrew, Dunham, Fry, Andrew E., Angela, Green, Rhian, Gwilliam, Hunt, Sarah E., Michael, Inouye, Jeffreys, Anna E., Alieu, Mendy, Aarno, Palotie, Simon, Potter, Jiannis, Ragoussis, Jane, Rogers, Kate, Rowlands, Elilan, Somaskantharajah, Pamela, Whittaker, Claire, Widden, Peter, Donnelly, Bryan, Howie, Jonathan, Marchini, Andrew, Morris, Miguel, Sanjoaquin, Eric Akum Achidi, Tsiri, Agbenyega, Angela, Allen, Olukemi, Amodu, Patrick, Corran, Abdoulaye, Djimde, Amagana, Dolo, Doumbo, Ogobara K., Chris, Drakeley, Sarah, Dunstan, Jennifer, Evans, Jeremy, Farrar, Hien Tt, Fernando D., Horstmann, R. D., Ibrahim, M., Karunaweera, N., Kokwaro, G., Koram, K. A., Lemnge, M., Makani, J., Marsh, K., Michon, P., David, Modiano, Molyneux, M. E., Mueller, I., Parker, M., Peshu, N., Plowe, C. V., Puijalon, O., Reeder, J., Reyburn, H., Riley, E. M., Sakuntabhai, A., Singhasivanon, P., Sirima, S., Tall, A., Taylor, T. E., Thera, M., Troye Blomberg, M., Williams, T. N., Wilson, M., Wellcome Trust Case Control Consortium Kwiatkowski, D. P., Epidemiology Network: Achidi, Malaria Genomic E. A., Agbenyega, T., Ahmad, T., Alcock, D., Allen, S., Amenga Etego, L., Amodu, O., Apinjoh, T. O., Attwood, A. P., Auburn, S., Ball, S. G., Balmforth, A. J., Ban, M., Barbour, J., Barnwell, D., Barrett, J. C., Barrett, J. H., Barton, A., Bentley, D., Bishop, D. T., Bojang, K., Boorman, J. P., Bougouma, E., Bradbury, L. A., Braga Marcano, C. A., Braund, P. S., Bredin, F., Breen, G., Brown, M. A., Brown, M. J., Bruce, I. N., Bryan, C., Bull, S., Bumpstead, S. J., Burke, B., Burton, P. R., Caesar, S., Campino, S., Cant, B., Cardin, N. J., Cardon, L. R., Carucci, D., Caulfield, M., Chaney, A., Clark, T., Clayton, D. G., Collier, D. A., Compston, A., Compston, D. A., Connell, J., Conway, D., Cook, K., Corran, P., Craddock, N., Cummings, F. R., Davison, D., Deloukas, P., Devries, J., Dewasurendra, R., Diakite, M., Dixon, R. J., Djimde, A., Dobson, R., Dolo, A., Dominiczak, A., Donnelly, P., Donovan, H., Doumbo, O., Downes, K., Doyle, A., Drakeley, C., Drummond, H., Duffy, P., Duncanson, A., Dunger, D. B., Dunstan, S., Duombo, O., Easton, D., Elkin, A., Elliott, K. S., Elzein, A., Enimil, A., Evans, D., Evans, J., Everson, U., Eyre, S., Farmer, A., Farrall, M., Farrar, C., Farrar, J., Fernando, D., Ferreira, T., Ferrier, I. N., Fisher, S. A., Fitzpatrick, K., Forbes, A., Franklyn, J. A., Fraser, C., Frayling, T. M., Freathy, R. M., Ghansah, A., Ghori, J., Gilbert, P. D., Gordon Smith, K., Goris, A., Gottlieb, M., Gough, S. C., Green, A., Green, E. K., Groves, C. J., Grozeva, D., Gungadoo, J., Gwilliam, R., Hall, A. S., Hallgrimsdóttir, I. B., Hamshere, M. L., Hart, L., Hattersley, A. T., Heward, J. M., Hider, S. L., Tran Tinh Hien, Hill, A. V., Hilton, E., Hinks, A. M., Hitman, G. A., Holmans, P. A., Horstmann, Rolf D., Howie, B. N., Hubbart, C., Hughes, C., Hunt, S. E., Hussein, A., Hussey, J. M., Muntaser, Ibrahim, Iles, M. M., Inouye, M., Ishengoma, D., Jallow, M., Jeffreys, A. E., Jewell, D. P., John, Sl, Jolley, J. D., Jones, I. R., Jones, L., Jones, R. W., Nadira, Karunaweera, Keniry, A., King, E., Kirov, G., Kivinen, K., Knight, A. S., Koch, K., Gilbert, Kokwaro, Koram, Kwadwo A., Lango, H., Lathrop, G. M., Lee, K. L., Lees, C. W., Martha, Lemnge, Leung, H. T., Lewis, C. M., Lin, E., Lindgren, C. M., Ly, A., Macinnis, B., Julie, Makani, Mangano, Valentina, Mangino, M., Manjurano, A., Manning, L., Mansfield, J. C., Manske, M., Maqbool, A., Marchini, J. L., Kevin, Marsh, Maslen, G., Mathew, C. G., Mcardle, W. L., Mccarthy, M. I., Mccreight, M., Mcginnis, R., Mcguffin, P., Meech, E., Mendy, A., Pascal, Michon, Mohiuddin, M. K., Molyneux, Malcolm E., Morris, A. P., Moskvina, V., Moyes, C., Ivo, Mueller, Munroe, P. B., Mutabingwa, T., Ndila, C. M., Newhouse, S. J., Newport, M., Nikolov, I., Nimmo, E. R., Nutland, S., Nyirongo, V., O'Donovan, M. C., Oluoch, T., Onipinla, A., Onnie, C. M., Ouwehand, W. H., Owen, M. J., Michael, Parker, Parkes, M., Pembrey, M., Pereira Gale, J., Perry, J. R., Norbert, Peshu, Plowe, Christopher V., Pointon, J. J., Potter, C., Potter, S., Prescott, N. J., Prowse, C. V., Odile, Puijalon, Quyen, N. T., Ragoussis, J., Rahman, N., Ravindrarajah, R., Rayner, N. W., John, Reeder, Hugh, Reyburn, Riley, Eleanor M., Ring, S. M., Risley, P., Rockett, K. A., Rogers, J., Rowlands, K., Anavaj, Sakuntabhai, Samani, N. J., Sanderson, J., Sanjoaquin, M., Satsangi, J., Sawcer, S. J., Seal, S., Shields, B. M., Silman, A. J., Simmonds, M. J., Pratap, Singhasivanon, Sodiomon, Sirima, Sirugo, G., Small, K. S., Somaskantharajah, E., Spencer, C. C., St Clair, D., Stevens, H. E., Stevens, M., Stevens, S., Strachan, D. P., Stratton, M. R., Su, Z., Suriyaphol, P., Symmons, D. P., Adama, Tall, Taylor, N. C., Taylor, Terrie E., Teo, Y., Teo, Y. Y., Mahamadou, Thera, Thompson, J. R., Thomson, W., Timpson, N. J., Tobin, M. D., Todd, J. A., Todhunter, C. E., Toure, O., Tremelling, M., Marita Troye Blomberg, Vanderwal, A., Vukcevic, D., Walker, M., Walker, N. M., Wallace, C., Walters, G. R., Walton, R., Watkins, N. A., Watson, R., Webster, J., Weedon, M. N., Whittaker, P., Widmer, B., Williams, Thomas N., Williamson, R., Michael, Wilson, Winzer, T., Withers, D., Wordsworth, P., Worthington, J., Wrigley, R., Xue, M., Young, A. H., Yuldasheva, N., and Zeggini, E.

Subjects
Linkage disequilibrium, Hemoglobin, Sickle, Population, Genome-wide association study, Locus (genetics), Biology, Population stratification, Polymorphism, Single Nucleotide, Severity of Illness Index, Linkage Disequilibrium, Article, Gene mapping, Reference Values, Ethnicity, Genetics, Humans, education, Genetic association, education.field_of_study, Polymorphism, Genetic, Chromosome Mapping, Genetic Variation, Malaria, Gambia, Imputation (genetics), Genome-Wide Association Study
Abstract

We report a genome-wide association (GWA) study of severe malaria in The Gambia. The initial GWA scan included 2,500 children genotyped on the Affymetrix 500K GeneChip, and a replication study included 3,400 children. We used this to examine the performance of GWA methods in Africa. We found considerable population stratification, and also that signals of association at known malaria resistance loci were greatly attenuated owing to weak linkage disequilibrium (LD). To investigate possible solutions to the problem of low LD, we focused on the HbS locus, sequencing this region of the genome in 62 Gambian individuals and then using these data to conduct multipoint imputation in the GWA samples. This increased the signal of association, from P = 4 × 10(-7) to P = 4 × 10(-14), with the peak of the signal located precisely at the HbS causal variant. Our findings provide proof of principle that fine-resolution multipoint imputation, based on population-specific sequencing data, can substantially boost authentic GWA signals and enable fine mapping of causal variants in African populations.

Published
2009
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2. Laboratory evidence of disseminated intravascular coagulation is associated with a fatal outcome in children with cerebral malaria despite an absence of clinically evident thrombosis or bleeding

Author

Moxon, C.A., Chisala, N.V., Mzikamanda, R., MacCormick, I., Harding, S., Downey, C., Molyneux, M., Seydel, K.B., Taylor, T.E., Heyderman, R.S., and Toh, C.-H.

Subjects
Blood Glucose, Male, Malawi, Fever, Thrombomodulin, Malaria, Cerebral, endothelial cell protein C receptor, Parasitemia, blood coagulation, Risk Factors, Humans, Prospective Studies, Coma, Malaria, Falciparum, Child, Fibrin, Hematologic Tests, Infant, Retinal Hemorrhage, CLINICAL HAEMOSTASIS AND THROMBOSIS, Original Articles, Disseminated Intravascular Coagulation, Child, Preschool, Lactates, Original Article, Female, Erratum, Biomarkers
Abstract

Background: \ud A procoagulant state is implicated in cerebral malaria (CM) pathogenesis, but whether disseminated intravascular coagulation (DIC) is present or associated with a fatal outcome is unclear.\ud \ud Objectives: \ud To determine the frequency of overt DIC, according to ISTH criteria, in children with fatal and non‐fatal CM.\ud \ud Methods/patients: \ud Malawian children were recruited into a prospective cohort study in the following diagnostic groups: retinopathy‐positive CM (n = 140), retinopathy‐negative CM (n = 36), non‐malarial coma (n = 14), uncomplicated malaria (UM), (n = 91), mild non‐malarial febrile illness (n = 85), and healthy controls (n = 36). Assays in the ISTH DIC criteria were performed, and three fibrin‐related markers, i.e. protein C, antithrombin, and soluble thrombomodulin, were measured.\ud \ud Results and conclusions: \ud Data enabling assignment of the presence or absence of ‘overt DIC’ were available for 98 of 140 children with retinopathy‐positive CM. Overt DIC was present in 19 (19%), and was associated with a fatal outcome (odds ratio [OR] 3.068; 95% confidence interval [CI] 1.085–8.609; P = 0.035]. The levels of the three fibrin‐related markers and soluble thrombomodulin were higher in CM patients than in UM patients (all P < 0.001). The mean fibrin degradation product level was higher in fatal CM patients (71.3 μg mL−1 [95% CI 49.0–93.6]) than in non‐fatal CM patients (48.0 μg mL−1 [95% CI 37.7–58.2]; P = 0.032), but, in multivariate logistic regression, thrombomodulin was the only coagulation‐related marker that was independently associated with a fatal outcome (OR 1.084 for each ng mL−1 increase [95% CI 1.017–1.156]; P = 0.014). Despite these laboratory derangements, no child in the study had clinically evident bleeding or thrombosis. An overt DIC score and high thrombomodulin levels are associated with a fatal outcome in CM, but infrequently indicate a consumptive coagulopathy.

Published
2015

4. Reconstruction of three-dimensional ozone fields using POAM III during SOLVE

Author

Randall, Cora Einterz, Lumpe, J. D., Bevilacqua, Richard M., Hoppel, K. W., Fromm, M. D., Salawitch, R. J., Swartz, W. H., Lloyd, S. A., Kyrö, Esko, Gathen, Peter von der, Claude, H., Davies, Jonathan, Backer, Hugo de, Dier, Horst, Molyneux, M. J., and Sancho Ávila, Juan Manuel

Subjects
Stratospheric ozone, Aerosol measurement, Polar ozone
Abstract

In this paper we demonstrate the utility of the Polar Ozone and Aerosol Measurement (POAM) III data for providing semiglobal three-dimensional ozone fields during the Stratospheric Aerosol and Gas Experiment (SAGE) III Ozone Loss and Validation Experiment (SOLVE) winter. As a solar occultation instrument, POAM III measurements were limited to latitudes of 63°N to 68°N during the SOLVE campaign but covered a wide range of potential vorticity. Using established mapping techniques, we have used the relation between potential vorticity and ozone measured by POAM III to calculate three-dimensional ozone mixing ratio fields throughout the Northern Hemisphere on a daily basis during the 1999/2000 winter. To validate the results, we have extensively compared profiles obtained from ozonesondes and the Halogen Occultation Experiment to the proxy O3 interpolated horizontally and vertically to the correlative measurement locations. On average, the proxy O3 agrees with the correlative observations to better than ∼5%, at potential temperatures below about 900 K and latitudes above about 30°N, demonstrating the reliability of the reconstructed O3 fields in these regions. We discuss the application of the POAM proxy ozone profiles for calculating photolysis rates along the ER-2 and DC-8 flight tracks during the SOLVE campaign, and we present a qualitative picture of the evolution of polar stratospheric ozone throughout the winter.

Published
2002

10. Severe falciparum malaria

Author

Beales, P. F., Brabin, B., Dorman, E., Gilles, H. M., Loutain, L., Marsh, K., Molyneux, M. E., Olliaro, P., Schapira, A., Touze, J. -E, Hien, T. T., Warrell, D. A., and Nicholas White

12. Co-trimoxazole in HIV-1 infection (multiple letters) [1]

Author

Hudson, C. P., Roach, T., Brindle, R., Boeree, M. J., Harries, A. D., Zijlstra, E. E., Taylor, T. E., Molyneux, M. E., Badri, M., Gary Maartens, Wood, R., Ehrlich, R., Anglaret, X., Attia, A., Gourvellec, G., Ouassa, T., and Chene, G.

18. Are Plasmodium falciparum parasites present in peripheral blood genetically the same as those sequestered in the tissues?

Author

Dembo, E. G., Phiri, H. T., Montgomery, J., Molyneux, M. E., and Stephen Rogerson

Subjects
qx_650, qx_135, parasitic diseases, wc_750
Abstract

Since quinine does not inhibit the growth of Plasmodium falciparum ring stages or mature schizonts, parasites may continue to emerge from sequestration sites after starting treatment. We used polymerase chain reaction amplification of P. falciparum merozoite surface protein 1 (MSP-1) and MSP-2 alleles to distinguish genotypes infecting 58 children with severe malaria. To examine changes in parasite populations in peripheral blood over time, we compared changes in number and spectrum of genotypes in samples on admission to a hospital to those obtained up to 24 hours later. Thirty-four children lost genotypes, 21 retained genotypes, and 3 gained an extra P. falciparum genotype at one locus but not the other. The lack of novel genotypes emerging suggests that among children with severe malaria the dominant clones sequestered in deep organs are usually the same as those in peripheral circulation.

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