Zobrazeno 1 - 10
of 304
pro vyhledávání: '"Alexander I, Gray"'
Autor:
Samya S. Alenezi, Manal J. Natto, John O. Igoli, Alexander I. Gray, James Fearnley, Hugo Fearnley, Harry P. de Koning, David G. Watson
Publikováno v:
International Journal for Parasitology: Drugs and Drug Resistance, Vol 14, Iss , Pp 201-207 (2020)
A bioassay-guided phytochemical investigation of propolis samples from Tanzania and Zambia that screened for activity against Trypanosoma brucei has led to the isolation of two novel flavanones with promising antitrypanosomal activity. The compounds
Externí odkaz:
https://doaj.org/article/7fdd93600ced42479704d0c14f4e3b2a
Autor:
Samya S. Alenezi, Naif D. Alenezi, Godwin U. Ebiloma, Manal J. Natto, Marzuq A. Ungogo, John O. Igoli, Valerie A. Ferro, Alexander I. Gray, James Fearnley, Harry P. de Koning, David G. Watson
Publikováno v:
Molecules, Vol 28, Iss 2, p 622 (2023)
Propolis is a resin that is gathered by bees from exudates produced by various plants. Its exact chemical composition depends on the plants available near the hive. Bees use propolis to coat the surfaces of the hive, where it acts as an anti-infectiv
Externí odkaz:
https://doaj.org/article/4e50d5735c9a4b678a2025f635e82c59
Publikováno v:
International Journal for Parasitology: Drugs and Drug Resistance, Vol 9, Iss , Pp 54-58 (2019)
The four components present in the trypanocidal treatment Samorin, the commercially available formulation of isometamidium, were separated and purified by column chromatography. These compounds as well as the Samorin mixture and the other phenanthrid
Externí odkaz:
https://doaj.org/article/0d2e39fcb4c6402a91bba21a31244e4b
Autor:
John V. Anyam, Priscilla E. Daikwo, Marzuq A. Ungogo, Nwakaego E. Nweze, Ngozichukwuka P. Igoli, Alexander I. Gray, Harry P. De Koning, John O. Igoli
Publikováno v:
Frontiers in Chemistry, Vol 9 (2021)
The powdered roots of the medicinal plant Acacia nilotica were extracted with hexane and ethyl acetate, and the extracts were subjected to column chromatography for the isolation of potentially bioactive compounds and their screening against kinetopl
Externí odkaz:
https://doaj.org/article/51a6d047a8324de680e843bc78838c3e
Autor:
John B. Nvau, Samya Alenezi, Marzuq A. Ungogo, Ibrahim A. M. Alfayez, Manal J. Natto, Alexander I. Gray, Valerie A. Ferro, Dave G. Watson, Harry P. de Koning, John O. Igoli
Publikováno v:
Frontiers in Chemistry, Vol 8 (2020)
Calliandra portoricensis is a medicinal plant growing freely in Nigeria. It is used traditionally to treat tuberculosis, as an anthelmintic and an abortifacient. Phytochemical fractionation and screening of its root extracts has yielded a novel (5-hy
Externí odkaz:
https://doaj.org/article/5e0178d1cf3243b9a6a36bf3df7a7774
Autor:
Samya S. Alenezi, Naif D. Alenezi, Godwin U. Ebiloma, Manal J. Natto, Marzuq A. Ungogo, John O. Igoli, Valerie A. Ferro, Alexander I. Gray, James Fearnley, Harry P. de Koning, David G. Watson
Publikováno v:
Molecules, Vol 27, Iss 5, p 1622 (2022)
Profiling a propolis sample from Papua New Guinea (PNG) using high-resolution mass spectrometry indicated that it contained several triterpenoids. Further fractionation by column chromatography and medium-pressure liquid chromatography (MPLC) followe
Externí odkaz:
https://doaj.org/article/975c2535760043c686171cdcfa35f366
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 9, Pp 1368-1371 (2017)
The biologically active title compounds have been isolated from Hibiscus sabdariffa plants, hibiscus acid as a dimethyl sulfoxide monosolvate [systematic name: (2S,3R)-3-hydroxy-5-oxo-2,3,4,5-tetrahydrofuran-2,3-dicarboxylic acid dimethyl sulfoxide m
Externí odkaz:
https://doaj.org/article/e51fa123dc374b57b2fd5ae2819e4a5b
Autor:
Ruwida Omar, John O. Igoli, Tong Zhang, Alexander I. Gray, Godwin U. Ebiloma, Carol J. Clements, James Fearnley, RuAngeli Edrada Ebel, Tim Paget, Harry P. de Koning, David G. Watson
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
Abstract Profiling of extracts from twelve propolis samples collected from eight regions in Nigeria was carried out using high performance liquid chromatography (LC) coupled with evaporative light scattering (ELSD), ultraviolet detection (UV) and mas
Externí odkaz:
https://doaj.org/article/75bad0eb60ca4dda904e608ea8efed11
Autor:
Ahmed M. Zheoat, Samya Alenezi, Ehab Kotb Elmahallawy, Marzuq A. Ungogo, Ali H. Alghamdi, David G. Watson, John O. Igoli, Alexander I. Gray, Harry P. de Koning, Valerie A. Ferro
Publikováno v:
Pathogens, Vol 10, Iss 2, p 175 (2021)
Trypanosomiasis and leishmaniasis are a group of neglected parasitic diseases caused by several species of parasites belonging to the family Trypansomatida. The present study investigated the antitrypanosomal and antileishmanial activity of chalcones
Externí odkaz:
https://doaj.org/article/594bc45a3a2c40958cf6f6d5defc12b5
Autor:
Yanna C. F. Teles, Carolina Campolina Rebello Horta, Maria de Fátima Agra, Weam Siheri, Marie Boyd, John O. Igoli, Alexander I. Gray, Maria de Fátima Vanderlei de Souza
Publikováno v:
Molecules, Vol 20, Iss 11, Pp 20161-20172 (2015)
Wissadula periplocifolia (L.) C. Presl (Malvaceae) is commonly used in Brazil to treat bee stings and as an antiseptic. The antioxidant properties of its extracts have been previously demonstrated, thus justifying a phytochemical investigation for it
Externí odkaz:
https://doaj.org/article/8df5c6e823e94fb9b85aa4af2db7b93f