95 Publications (Page 3 of 4)
2013
Determination of antiplasmodial activity and binding affinity of selected natural products towards PfTrxR and PfGR.
Munigunti, Ranjith⋅Becker, Katja⋅Brun, Reto and Calderon, Angela I
Natural product communications, vol. 8, (no. 8), pp. 1135-6, 2013/Aug. | Journal Article
 
LC-DAD-MS-based metabolite profiling of three species of Justicia (Acanthaceae).
Calderon, Angela I⋅Hodel, Adam⋅Wolfender, Jean-Luc⋅Gupta, Mahabir P⋅Correa, Mireya and Hostettmann, Kurt
Natural product research, vol. 27, (no. 15), pp. 1335-42, 2013/Aug. | Journal Article
 
Lycopodiaceae from Panama: a new source of acetylcholinesterase inhibitors.
Calderon, Angela I⋅Simithy-Williams, Johayra⋅Sanchez, Rocío⋅Espinosa, Alex⋅Valdespino, Iván and Gupta, Mahabir P
Natural product research, vol. 27, (no. 4-5), pp. 500-5, 2013/Mar. | Journal Article
 
1H-NMR quantification of major saccharides in a?aí raw materials: A comparison of the internal standard methodology with the absolute intensity qNMR method
Sterling, C.⋅Crouch, R.⋅Russell, D.J. and Calderõn, A.I.
Phytochemical Analysis, vol. 24, pp. 631-637. | Journal Article
 
Triterpenes and fatty acids from discophora guianensis identified by gc-ms
Calderón, A.I.⋅Hodel, A.⋅Craig, E. and Gupta, M.P.
Biochemical Systematics and Ecology, vol. 50, pp. 16-18. | Journal Article
2012
Antimalarial natural products drug discovery in Panama.
Calderon, Angela I⋅Simithy-Williams, Johayra and Gupta, Mahabir P
Pharmaceutical biology, vol. 50, (no. 1), pp. 61-71, 2012/Jan. | Journal Article
 
Development of liquid chromatography/mass spectrometry based screening assay for PfTrxR inhibitors using relative quantitation of intact thioredoxin.
Munigunti, Ranjith and Calderon, Angela I
Rapid communications in mass spectrometry : RCM, vol. 26, (no. 17), pp. 2051-6, 2012/Sep/15. | Journal Article
 
Liquid chromatography/mass spectrometry based fingerprinting analysis and mass profiling of Euterpe oleracea (açaí) dietary supplement raw materials.
Mulabagal, Vanisree and Calderon, Angela I
Food chemistry, vol. 134, (no. 2), pp. 1156-64, 2012/Sep/15. | Journal Article
 
Quantitative analysis of anthocyanins in Euterpe oleracea (a?aí) dietary supplement raw materials and capsules by Q-TOF liquid chromatography/mass spectrometry
Mulabagal, Vanisree⋅Mulabagal, V.⋅Keller, William J⋅Keller, W.J.⋅Calderón, Angela I and Calderón, A.I.
Pharmaceutical Biology, vol. 50, pp. 1289-1296. | Journal Article
2011
Identification of oleamide in Guatteria recurvisepala by LC/MS-based Plasmodium falciparum thioredoxin reductase ligand binding method.
Munigunti, Ranjith⋅Munigunti, Ranjith⋅Nelson, Nicholas⋅Nelson, Nicholas⋅Mulabagal, Vanisree⋅Mulabagal, Vanisree⋅Gupta, Mahabir P⋅Gupta, Mahabir⋅Brun, Reto⋅Brun, Reto⋅Calderon, Angela I and Calderón, Angela
Planta medica, vol. 77, (no. 15), pp. 1749-53, 2011/Oct. | Journal Article
 
Screening of natural compounds for ligands to PfTrxR by ultrafiltration and LC-MS based binding assay.
Munigunti, Ranjith⋅Munigunti, Ranjith⋅Mulabagal, Vanisree⋅Mulabagal, Vanisree⋅Calderón, Angela I and Calderon, Angela I
Journal of pharmaceutical and biomedical analysis, vol. 55, (no. 2), pp. 265-71, 2011/May/15. | Journal Article
2010
Development of an ultrafiltration-liquid chromatography/mass spectrometry (UF-LC/MS) based ligand-binding assay and an LC/MS based functional assay for Mycobacterium tuberculosis shikimate kinase.
Mulabagal, Vanisree⋅Mulabagal, Vanisree⋅Calderon, Angela I and Calderón, Angela I
Analytical chemistry, vol. 82, (no. 9), pp. 3616-21, 2010/May/1. | Journal Article
 
Development of binding assays to screen ligands for Plasmodium falciparum thioredoxin and glutathione reductases by ultrafiltration and liquid chromatography/mass spectrometry.
Mulabagal, Vanisree and Calderon, Angela I
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, vol. 878, (no. 13-14), pp. 987-93, 2010/Apr/15. | Journal Article
 
Screening of Latin American plants for antiparasitic activities against malaria, Chagas disease, and leishmaniasis.
Calderon, Angela I⋅Romero, Luz I⋅Ortega-Barría, Eduardo⋅Solís, Pablo N⋅Zacchino, Susana⋅Gimenez, Alberto⋅Pinzón, Roberto⋅Cáceres, Armando⋅Tamayo, Giselle⋅Guerra, Carlos⋅Espinosa, Alex⋅Correa A., Mireya D and Gupta, Mahabir P
Pharmaceutical biology, vol. 48, (no. 5), pp. 545-53, 2010/May. | Journal Article
 
Screening of plants of Amaryllidaceae and related families from Panama as sources of acetylcholinesterase inhibitors.
Calderon, Angela I⋅Cubilla, Milagros⋅Espinosa, Alex and Gupta, Mahabir P
Pharmaceutical biology, vol. 48, (no. 9), pp. 988-93, 2010/Sep. | Journal Article
2009
Ecdysteroids from Dichorisandra hexandra (Commelinaceae)
Calderon, Angela I⋅Chung, Komanova S and Gupta, Mahabir P
Biochemical Systematics and Ecology, vol. 37, (no. 5), pp. 693-695, 2009. | Journal Article
 
Screening antioxidants using LC-MS: case study with cocoa.
Calderon, Angela I⋅Calderón, Angela I⋅Wright, Brian J⋅Hurst, W J⋅Van Breemen, Richard B and van Breemen, Richard B
Journal of agricultural and food chemistry, vol. 57, (no. 13), pp. 5693-9, 2009/Jul/8. | Journal Article
 
Triterpenes from Warszewiczia coccinea (rubiaceae) as inhibitors of acetylcholinesterase
Calderón, A.I.⋅Simithy, J.⋅Quaggio, G.⋅Espinosa, A.⋅López-Pérez, J.L. and Gupta, M.P.
Natural Product Communications, vol. 4, pp. 1323-1326. | Journal Article
 
Triterpenes from Warszewiczia coccinea (Rubiaceae) as inhibitors of acetylcholinesterase.
Calderon, Angela I⋅Simithy, Johayra⋅Quaggio, Giuliana⋅Espinosa, Alex⋅López-Pérez, Jose L and Gupta, Mahabir P
Natural product communications, vol. 4, (no. 10), pp. 1323-6, 2009/Oct. | Journal Article
2007
LC-MS-MS determination of antioxidant activity of catechins in cocoa powder
Calderon, Angela I⋅Hurst, W. J and Van Breemen, Richard B
55th ASMS Conference Proceedings, 2007. | Journal Article
2006
3-Farnesyl-2-hydroxybenzoic acid is a new anti-Helicobacter pylori compound from Piper multiplinervium
Rüegg, T.⋅Rüegg, T⋅Calderón, a I⋅Calderón, A.I.⋅Queiroz, E F⋅Queiroz, E.F.⋅Solís, P N⋅Solís, P.N.⋅Marston, a⋅Marston, A.⋅Rivas, F⋅Rivas, F.⋅Ortega-Barría, E⋅Ortega-Barría, E.⋅Hostettmann, K⋅Hostettmann, K.⋅Gupta, M.P. and Gupta, M P
Journal of Ethnopharmacology, vol. 103, pp. 461-467. | Journal Article
 
3-Farnesyl-2-hydroxybenzoic acid is a new anti-Helicobacter pylori compound from Piper multiplinervium.
Rüegg, T⋅Calderon, Angela I⋅Queiroz, E F⋅Solís, P N⋅Marston, Andrew⋅Rivas, F⋅Ortega-Barría, E⋅Hostettmann, Kurt and Gupta, M P
Journal of ethnopharmacology, vol. 103, (no. 3), pp. 461-7, 2006/Feb/20. | Journal Article
 
Evaluation of larvicidal and in vitro antiparasitic activities of plants in a biodiversity plot in the Altos de Campana National Park, Panama
Calderón, ?.I.⋅Romero, L.I.⋅Ortega-Barría, E.⋅Brun, R.⋅Correa A., M.D. and Gupta, M.P.
Pharmaceutical Biology, vol. 44, pp. 487-498. | Journal Article
 
Screening of Latin American plants for cytotoxic activity
Calderón, ?.I.⋅Vázquez, Y.⋅Solís, P.N.⋅Caballero-George, C.⋅Zacchino, S.⋅Gimenez, A.⋅Pinzón, R.⋅Cáceres, A.⋅Tamayo, G.⋅Correa, M. and Gupta, M.P.
Pharmaceutical Biology, vol. 44, pp. 130-140. | Journal Article
 
Screening of Latin American plants for cytotoxic activity.
Calderon, Angela I⋅Vazquez, Y.⋅Solis, P.N.⋅Caballero-George, C.⋅Zacchino, S.⋅Gimenez, A.⋅Pinzon, R.⋅Caceres, A.⋅Tamayo, G. and Correa, M.
Pharmaceutical biology., vol. 44, (no. 2), pp. 130-140, 2006. | Journal Article