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  1. Fulltext In vitro antimicrobial and cytotoxic potential against colorectal cancer cell lines using ethanolic leaf extract of Sansevieria trifasciata (Agavaceae)
    Afzal S, Wu YS, Manap ASA, Attiq A, Albokhadaim I, Appalaraju V, et al.
    Indian J Pharmacol, 2024 Sep 01;56(5):329-334.
    PMID: 39687956 DOI: 10.4103/ijp.ijp_564_24
    BACKGROUND: Sansevieria trifasciata, common name, mother-in-law's tongue, is a member of the Agavaceae family. We undertook this study to evaluate the cytotoxicity of S. trifasciata leaf extract against two cancer cell lines as well as its antibacterial activities against six bacterial strains.

    MATERIALS AND METHODS: The investigated cell lines include primary colon epithelial (PCE) cells and human colorectal cancer cells; the studied bacterial strains are Staphylococcus aureus, Proteus vulgaris, Bacillus subtilis, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Escherichia coli. Using the agar well-diffusion method, various doses (5, 10, and 20 mg/mL) of plant extracts (ethanol and petroleum ether) were evaluated against each kind of bacterial strain. The minimal inhibitory doses were found using the two-fold serial dilution approach, with a range of 0.156-5 mg/mL.

    RESULTS: Comparing extracts of S. trifasciata leaves to tetracycline (0.05 mg/mL), a common antibiotic, revealed a wide range of antibacterial activity. P. vulgaris and S. aureus were the most sensitive bacterial strains to ethanol and petroleum ether extracts, respectively. The MTT test was employed to ascertain the viable cell count of PCE cells and HCT-116. When various ethanol extract concentrations (7.8, 15.63, 31.25, 62.5, 125, 250, 500, and 1000 μg/mL) were tested against the cell lines, HCT-116's IC50, values were lower as compared to PCE. The IC50 values for HCT-116 and PCE cells ranged from 10.0 to 14.07 μg/mL and 92.9-216.9 μg/mL, respectively.

    CONCLUSIONS: Ethanolic extract of S. trifasciata showed promising antibacterial and anticancer properties.

  2. Fulltext Alterations of haemodynamic parameters in spontaneously hypertensive rats by Aristolochia ringens Vahl. (Aristolochiaceae)
    Aigbe FR, Munavvar ASZ, Rathore H, Eseyin O, Pei YP, Akhtar S, et al.
    J Tradit Complement Med, 2018 Jan;8(1):72-80.
    PMID: 29321992 DOI: 10.1016/j.jtcme.2017.02.006
    Aristolochia ringens Vahl. (Aristolochiaceae (AR); mǎ dōu líng) is used traditionally in Nigeria for the management of various disorders including oedema. Preliminary investigation revealed its modulatory effect on the cardiovascular system. This study was aimed at investigating the effect of the aqueous root extract of A. ringens (AR) on haemodynamic parameters of spontaneously hypertensive rats (SHRs). The effect of oral subacute (21 days) and intravenous acute exposure of SHRs to the extract were assessed using tail cuff and carotid artery canulation methods respectively. In the latter, the effect of chloroform, butanol and aqueous fractions of AR were also evaluated. The extract significantly reduced systolic and diastolic blood pressures in SHRs, with peak reductions of 20.3% and 26.7% respectively at 50 mg/kg by the 21st day of oral subacute exposure. Upon intravenous exposure, AR (50 mg/kg) reduced systolic and diastolic blood pressure by as much as 53.4 ± 2.2 and 49.2 ± 2.8 mmHg respectively. A dose-dependent reduction in heart rate, significant at 25 and 50 mg/kg was also observed. Hexamethonium (20 mg/kg) and atropine (1 mg/kg) inhibited the extract's reduction of systolic blood pressure, diastolic blood pressure and heart rate significantly. The extract's butanol fraction produced the greatest systolic and diastolic blood pressures reduction of 67.0 ± 3.8 and 68.4 mmHg respectively at 25 mg/kg and heart rate reduction of 40 ± 7 beats per minute at 50 mg/kg. HPLC analysis revealed the presence of 4-hydroxybenzoic acid and quercetin in AR. The extract's alterations of haemodynamic parameters in this study show that it has hypotensive effect on spontaneously hypertensive rats.
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