A novel nor-megastigmane, normegastigmane-5,9-epoxy-3,8-diol (), together with 10 known compounds of diverse classes including megastigmanes, sesquiterpenoids, and triterpenoids were isolated from the leaves of . The structure of was established by 1D and 2D NMR and HRESIMS data analysis. The known compounds were identified as 5,11-epoxy-3,9-megastigmanediol (), 7-megastigmene-3,6,9-triol (), 1,3-dihydroxypropan-2-yl stearate (), (1,5)-1,5-dimethyl-8-(propan-2-ylidene)cyclodeca-1,5-diene germacrene () 3,5-dihyroxy-6,7-megastigmadien-9-one (), squalene (), -amyrin (), -amyrone (), -amyrin eicosanoate (), and -sitosterol ().
View Article and Find Full Text PDFBackground: Type 2 diabetes mellitus (T2DM) is a disease of public health importance globally with an increasing burden of undiagnosed pre-diabetes and diabetes in low- and middle-income countries, Nigeria in particular. Pre-diabetes and diabetes are established risk factors for cardiovascular complications. However, data are scanty on the current prevalence of these conditions in Nigeria, based on haemoglobin A1c (HbA1c) diagnosis as recommended by the WHO in 2009.
View Article and Find Full Text PDFCoronavirus disease 2019 (COVID-19) is an infection caused by a newly discovered coronavirus which was identified in Wuhan, China. The race is on globally to repurpose drugs for COVID-19 and develop a safe and effective vaccine against the disease. There is an urgent need to search for effective remedies against COVID-19 from the rich and extensive flora of Africa and the world.
View Article and Find Full Text PDFIntroduction: Limited research exists describing young people's knowledge and risk perception of e-cigarettes and hookah in Nigeria. This qualitative study explored the knowledge and risk perception of e-cigarettes and hookah amongst young people in Lagos, Nigeria.
Methods: Participants (n = 20), aged 15-24 years who had used e-cigarettes or hookah at least once in the past 12 months, participated in three focus group (FG) discussions in January 2020.
Phytochemical investigation of the leaves and bark of has led to the isolation of six new iridoids, subcordatanols I-V (- and ) and 1--methylcrescentin I (), along with two known analogues ( and ). Among them, subcordatanol I () is the first example of a 3,8-monoepoxy-iridoid featuring a caged 2-oxa-bicyclo[3.2.
View Article and Find Full Text PDFContext: Plants harbor endophytes with potential bioactivity. Markhamia tomentosa (Benth) K. Schum ex.
View Article and Find Full Text PDFBackground: The Nigerian Report card on Physical Activity (PA) in Children and Youth was first developed in 2013 to inform practice and policy on healthy living and prevention of noncommunicable diseases among Nigerian children and youth. This article summarizes the results of the 2016 report card and provides updated evidence on the current situation in Nigeria.
Methods: A comprehensive review of literature was undertaken by the Report Card Working Group.
Ethnopharmacological Relevance: Markhamia tomentosa (Benth.) K. Schum Ex Engl.
View Article and Find Full Text PDFNatural product compounds obtained from medicinal plants have been great contributions in the discovery of numerous clinically useful drugs. Markhamia species have been reportedly used by many cultures in human and veterinary traditional medicines. The five identified species of Markhamia, that is, Markhamia lutea, Markhamia obtusifolia, Markhamia stipulata, Markhamia tomentosa, and Markhamia zanzibarica have been the subject of chemical investigations that have led to the characterization of their secondary metabolites.
View Article and Find Full Text PDFDioscorea species is a very important food and drug plant. The tubers of the plant are extensively used in food and drug purposes owing to the presence of steroidal constituent's diosgenin in the tubers. In the present study, we report for the first time that the leaves of Dioscorea composita and Dioscorea floribunda grown under the field conditions exhibited the presence of multicellular oil glands on the epidermal layers of the plants using stereomicroscopy (SM) and scanning electron microscopy (SEM).
View Article and Find Full Text PDFEthnopharmacological Relevance: Markhamia tomentosa (Benth) K. Schum ex. Engl.
View Article and Find Full Text PDFThis study investigates the antioxidant and antibacterial activities of aqueous and methanolic extracts from Hymenocardia acida Tul. (Hymenocardiaceae). The inhibition values of the extracts and quercetin were found to be very close, with no significant differences at a concentration of 0.
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