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Dhammika Nanayakkara

Research Profile

Chemicals & Drugs

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TOP 3
Yan-Hong Wang; Jianping Zhao; Bharathi Avula; N P Dhammika Nanayakkara; Ikhlas A Khan
Cassia cinnamon as a source of coumarin in cinnamon-flavored food and food supplements in the United States.
Marcela de Souza Santos; Maria Perpétua Freire de Morais Del Lama; Willian Jonis Andrioli; Jairo Kenupp Bastos; N P Dhammika Nanayakkara; Rose Mary Zumstein Georgetto Naal
In vitro anti-allergic activity of the fungal metabolite pyridovericin.
Daniel K Owens; N P Dhammika Nanayakkara; Franck E Dayan
In planta mechanism of action of leptospermone: impact of its physico-chemical properties on uptake, translocation, and metabolism.

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All Publications

2013: Yan-Hong Wang; Jianping Zhao; Bharathi Avula; N P Dhammika Nanayakkara; Ikhlas A Khan
Cassia cinnamon as a source of coumarin in cinnamon-flavored food and food supplements in the United States.
Journal of agricultural and food chemistry 2013;61(18):4470-6.
2013: Marcela de Souza Santos; Maria Perpétua Freire de Morais Del Lama; Willian Jonis Andrioli; Jairo Kenupp Bastos; N P Dhammika Nanayakkara; Rose Mary Zumstein Georgetto Naal
In vitro anti-allergic activity of the fungal metabolite pyridovericin.
International immunopharmacology 2013;15(3):532-8.
2013: Daniel K Owens; N P Dhammika Nanayakkara; Franck E Dayan
In planta mechanism of action of leptospermone: impact of its physico-chemical properties on uptake, translocation, and metabolism.
Journal of chemical ecology 2013;39(2):262-70.
2012: Mallika Kumarihamy; Babu L Tekwani; Stephen O Duke; Daneel Ferreira; Melissa Jacob; Shabana I Khan; N P Dhammika Nanayakkara
Antiprotozoal and antimicrobial compounds from the plant pathogen Septoria pistaciarum.
Journal of natural products 2012;75(5):883-9.
2012: Narayan D Chaurasiya; Luiza R S Dias; Shobana Ganesan; N P Dhammika Nanayakkara; Larry A Walker; Babu L Tekwani
Inhibition of human monoamine oxidase A and B by 5-phenoxy 8-aminoquinoline analogs.
Bioorganic & medicinal chemistry letters 2012;22(4):1701-4.
2011: Ana C Pereira; V Rodrigues; Jairo Kenupp Bastos; Wilson R Cunha; P M da Matta Guedes; Ademar A da Silva Filho; U O Gonçalves; P P Luz; L G Magalhães; A C G Moraes; N P Dhammika Nanayakkara; M L A e Silva
Schistosomicidal and trypanocidal structure-activity relationships for (±)-licarin A and its (-)- and (+)-enantiomers.
Phytochemistry 2011;72(11-12):1424-30.
2011: Haining Liu; Larry Walker; N P Dhammika Nanayakkara; Robert J Doerksen
Methemoglobinemia caused by 8-aminoquinoline drugs: DFT calculations suggest an analogy to H4B's role in nitric oxide synthase.
Journal of the American Chemical Society 2011;133(5):1172-5.
2010: Mallika Kumarihamy; Frank R Fronczek; Daneel Ferreira; Melissa Jacob; Shabana I Khan; N P Dhammika Nanayakkara
Bioactive 1,4-dihydroxy-5-phenyl-2-pyridinone alkaloids from Septoria pistaciarum.
Journal of natural products 2010;73(7):1250-3.
2010: Daniel Cook; Agnes M Rimando; Thomas E Clemente; Joachim Schröder; Franck E Dayan; N P Dhammika Nanayakkara; Zhiqiang Pan; Brice P Noonan; Mark Fishbein; Ikuro Abe; Stephen O Duke; Scott R Baerson
Alkylresorcinol synthases expressed in Sorghum bicolor root hairs play an essential role in the biosynthesis of the allelopathic benzoquinone sorgoleone.
The Plant cell 2010;22(3):867-87.
2009: H M T Bandara Herath; Wimal Herath; Paulo Carvalho; Shabana I Khan; Babu L Tekwani; Stephen O Duke; Maria Tomaso-Peterson; N P Dhammika Nanayakkara
Biologically active tetranorditerpenoids from the fungus Sclerotinia homoeocarpa causal agent of dollar spot in turfgrass.
Journal of natural products 2009;72(12):2091-7.
2009: A A da Silva Filho; D O Resende; M J Fukui; F F Santos; P M Pauletti; Wilson R Cunha; M L A Silva; L E Gregório; Jairo Kenupp Bastos; N P Dhammika Nanayakkara
In vitro antileishmanial, antiplasmodial and cytotoxic activities of phenolics and triterpenoids from Baccharis dracunculifolia D. C. (Asteraceae).
Fitoterapia 2009;80(8):478-82.
2009: Donna C Sullivan; Heather Flowers; Robin W Rockhold; H M T Bandara Herath; N P Dhammika Nanayakkara
Antibacterial activity of synthetic fire ant venom: the solenopsins and isosolenopsins.
The American journal of the medical sciences 2009;338(4):287-91.
2008: Ademar A da Silva Filho; Eveline S Costa; Wilson R Cunha; M L A e Silva; N P Dhammika Nanayakkara; Jairo Kenupp Bastos
In vitro antileishmanial and antimalarial activities of tetrahydrofuran lignans isolated from Nectandra megapotamica (Lauraceae).
Phytotherapy research : PTR 2008;22(10):1307-10.
2008: Karina Pontin; Ademar A da Silva Filho; Fransérgio Francisco Santos; M L A Silva; Wilson Roberto Cunha; N P Dhammika Nanayakkara; Jairo Kenupp Bastos; Sérgio de Albuquerque
In vitro and in vivo antileishmanial activities of a Brazilian green propolis extract.
Parasitology research 2008;103(3):487-92.
2008: Sérgio F Andrade; Ademar A da Silva Filho; Dimas de O Resende; Márcio L A Silva; Wilson R Cunha; N P Dhammika Nanayakkara; Jairo Kenupp Bastos
Antileishmanial, antimalarial and antimicrobial activities of the extract and isolated compounds from Austroplenckia populnea (Celastraceae).
Zeitschrift für Naturforschung. C, Journal of biosciences 2008;63(7-8):497-502.
2008: N P Dhammika Nanayakkara; Arba Ager; Marilyn S Bartlett; Vanessa Yardley; Simon L Croft; Ikhlas A Khan; JD McChesney; Larry Walker
Antiparasitic activities and toxicities of individual enantiomers of the 8-aminoquinoline 8-[(4-amino-1-methylbutyl)amino]-6-methoxy-4-methyl-5-[3,4-dichlorophenoxy]quinoline succinate.
Antimicrobial agents and chemotherapy 2008;52(6):2130-7.
2008: N P Dhammika Nanayakkara; Kevin K Schrader
Synthesis of water-soluble 9,10-anthraquinone analogues with potent cyanobactericidal activity toward the musty-odor cyanobacterium Oscillatoria perornata.
Journal of agricultural and food chemistry 2008;56(3):1002-7.
2008: Scott R Baerson; Franck E Dayan; Agnes M Rimando; N P Dhammika Nanayakkara; Chang-Jun Liu; Joachim Schröder; Mark Fishbein; Zhiqiang Pan; Isabelle A Kagan; Lee H Pratt; Marie-Michèle Cordonnier-Pratt; Stephen O Duke
A functional genomics investigation of allelochemical biosynthesis in Sorghum bicolor root hairs.
The Journal of biological chemistry 2008;283(6):3231-47.
2008: Ademar A da Silva Filho; Joo P B de Sousa; Sandra Soares; Niege A J C Furtado; Márcio L Andrade e Silva; Wilson R Cunha; Luís E Gregório; N P Dhammika Nanayakkara; Jairo Kenupp Bastos
Antimicrobial activity of the extract and isolated compounds from Baccharis dracunculifolia D. C. (Asteraceae).
Zeitschrift für Naturforschung. C, Journal of biosciences 2008;63(1-2):40-6.
2007: Franck E Dayan; Susan B Watson; N P Dhammika Nanayakkara
Biosynthesis of lipid resorcinols and benzoquinones in isolated secretory plant root hairs.
Journal of experimental botany 2007;58(12):3263-72.
2006: Lalith Jayasinghe; Hamed K Abbas; Melissa R Jacob; Wimal Herath; N P Dhammika Nanayakkara
N-Methyl-4-hydroxy-2-pyridinone analogues from Fusarium oxysporum.
Journal of natural products 2006;69(3):439-42.
2005: Fábio Ferreira Perazzo; G H B Souza; Walter Lopes; L G V Cardoso; J C T Carvalho; N P Dhammika Nanayakkara; Jairo Kenupp Bastos
Anti-inflammatory and analgesic properties of water-ethanolic extract from Pothomorphe umbellata (Piperaceae) aerial parts.
Journal of ethnopharmacology 2005;99(2):215-20.
2005: George Howell; Jordan Butler; Richard D deShazo; Jerry M Farley; Hui-Ling Liu; N P Dhammika Nanayakkara; Anne Yates; Gene B Yi; Robin W Rockhold
Cardiodepressant and neurologic actions of Solenopsis invicta (imported fire ant) venom alkaloids.
Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology 2005;94(3):380-6.
2003: Kevin K Schrader; N P Dhammika Nanayakkara; Craig S Tucker; Agnes M Rimando; Markus Ganzera; Brian T Schaneberg
Novel derivatives of 9,10-anthraquinone are selective algicides against the musty-odor cyanobacterium Oscillatoria perornata.
Applied and environmental microbiology 2003;69(9):5319-27.
2003: Matthew W Feltenstein; L Corinne Lambdin; Markus Ganzera; H Ranjith; W Dharmaratne; N P Dhammika Nanayakkara; Ikhlas A Khan; Kenneth J Sufka
Anxiolytic properties of Piper methysticum extract samples and fractions in the chick social-separation-stress procedure.
Phytotherapy research : PTR 2003;17(3):210-6.
2003: Markus Ganzera; H R W Dharmaratne; N P Dhammika Nanayakkara; Ikhlas A Khan
Determination of saponins and alkaloids in Caulophyllum thalictroides (blue cohosh) by high-performance liquid chromatography and evaporative light scattering detection.
Phytochemical analysis : PCA 2003;14(1):1-7.
2002: H R W Dharmaratne; N P Dhammika Nanayakkara; Ikhlas A Khan
(-)-3 beta,4 beta-epoxyvalerenic acid from Valeriana officinalis.
Planta medica 2002;68(7):661-2.
2002: N P Dhammika Nanayakkara; Charles L Burandt; Melissa R Jacob
Flavonoids with activity against methicillin-resistant Staphylococcus aureus from Dalea scandens var. paucifolia.
Planta medica 2002;68(6):519-22.
2002: H R W Dharmaratne; N P Dhammika Nanayakkara; Ikhlas A Khan
Kavalactones from Piper methysticum, and their 13C NMR spectroscopic analyses.
Phytochemistry 2002;59(4):429-33.
2001: Anjan Nan; N P Dhammika Nanayakkara; Larry Walker; V Yardley; S L Croft; Hamidreza Ghandehari
N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers for targeted delivery of 8-aminoquinoline antileishmanial drugs.
Journal of controlled release : official journal of the Controlled Release Society 2001;77(3):233-43.
2001: K K Smith; H R W Dharmaratne; Matthew W Feltenstein; SL Broom; J Todd Roach; N P Dhammika Nanayakkara; Ikhlas A Khan; Kenneth J Sufka
Anxiolytic effects of kava extract and kavalactones in the chick social separation-stress paradigm.
Psychopharmacology 2001;155(1):86-90.
2000: Joanne G Romagni; Giovanni Meazza; N P Dhammika Nanayakkara; Franck E Dayan
The phytotoxic lichen metabolite, usnic acid, is a potent inhibitor of plant p-hydroxyphenylpyruvate dioxygenase.
FEBS letters 2000;480(2-3):301-5.
1998: RM Moraes-Cerdeira; Charles L Burandt; Jairo Kenupp Bastos; N P Dhammika Nanayakkara; JD McChesney
In vitro propagation of Podophyllum peltatum.
Planta medica 1998;64(1):42-5.
1997: RM Moraes-Cerdeira; Jairo Kenupp Bastos; Charles L Burandt; N P Dhammika Nanayakkara; Julie Rakel Mikell; JD McChesney
Alkaloid content of different bulb parts of Narcissus cv. Ice Follies.
Planta medica 1997;63(1):92-3.
1990: J K Baker; R H Yarber; N P Dhammika Nanayakkara; JD McChesney; F Homo; I Landau
Effect of aliphatic side-chain substituents on the antimalarial activity and on the metabolism of primaquine studied using mitochondria and microsome preparations.
Pharmaceutical research 1990;7(1):91-5.