@article {911, title = {Evaluation of Antispasmodic Effect of Arcapillin on Smooth Muscles of Rats}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {July 2019}, pages = {712-717}, type = {Original Article}, chapter = {712}, abstract = {

Background: Arcapillin, 2{\textquoteright},4{\textquoteright},5-trihydroxy-5{\textquoteright},6,7{\textendash}trimethoxyflavone, is a flavone aglycone isolated from several Artemisia species, though, it was first identified from A. capillaris. The Artemisia species are used in folk medicine as a remedy for gastrointestinal and liver illnesses, hypertension, fever and inflammation. Studies indicated a potential role of arcapillin to relieve symptoms of liver disorders; however, there is no report yet in the literature of its effect on smooth muscles. Objective: Our study aims to evaluate the effect of arcapillin, isolated from A. monosperma, on the contractile activity of rat smooth muscles. Materials and Methods: Increased concentrations of arcapillin were tested on isolated rat ileum, pulmonary artery, trachea, and urinary bladder. The muscle contraction was recorded upon addition of arcapillin in eight cumulative concentrations of half log units in the range of [10-7 M -3{\texttimes}10-4 M]. Depending on the organ-containing muscles, the preparations were treated with arcapillin either at basal tonus or after pre-stimulated via a contractile agent; 10-3 M O-acetylcholine on ileum and 10-5 M L-phenylephrine on pulmonary artery rings. Control tissues were treated with sodium hydroxide in an equivalent concentration to that used to dissolve the flavone. Results: Arcapillin caused a dose-dependent relaxation on ileum preparation and pulmonary artery. The inhibition of the contractile activity of ileum was reversible within 60 seconds after washing off the flavone. The urinary bladder showed a slight increase in contraction at the highest concentrations starting at [10-4 M] of arcapillin. There was no observed effect on the contraction of tracheal smooth muscles by all tested concentrations of arcapillin. Conclusion: The antispasmodic activity of arcapillin may contribute to the pharmaceutical importance of A. monosperma in particularly to treat gastrointestinal disorders.

}, keywords = {Antispasmodic, Arcapillin, Artemisia monosperma, Flavone, Smooth Muscles}, doi = {10.5530/pj.2019.11.113}, author = {Lubna F. Abu-Niaaj and Ibrahim Katampe and Shtaywy S. Abdalla} } @article {708, title = {Isolation and Characterization of Flavones from Artemisia monosperma}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {1018-1023}, type = {Original Article}, chapter = {1018}, abstract = {

Background: Artemisia monosperma (Delile) is a green aromatic shrub that grows widely in the deserts of Middle East, Africa and China. This plant is commonly used in folk medicine as a remedy of a wide range of illness including gastrointestinal disorders, inflammation, diabetes and microbial infection. The different categories of the secondary metabolites identified from Artemisia species are recognized for their biological activities as antioxidants, anti-inflammatory and antimicrobial compounds. Objective: This study aims to isolate new flavonoids from A. monosperma that might have potential biological activities thus be translated into pharmaceutical uses. Materials and Methods: Air-dried A. monosperma extraction was done using different organic solvents. The methanolic extract was selected for isolation of flavonoids using column chromatography and thin layer chromatography. The chemical structures of the isolated flavones determined based on spectroscopic analysis of ultraviolet, mass and nuclear magnetic resonance spectra. Results: Nine flavone aglycones were isolated and identified from the methanolic extract; four of which are reported for the first time from A. monosperma. These include: 5-Hydroxy-3{\textquoteright},4{\textquoteright}, 6,7-tetramethoxyflavone; 3{\textquoteright},5-dihydroxy-4{\textquoteright},6,7-trimethoxyflavone (eupatorin); 5,6-dihydroxy-4{\textquoteright},7-dimethoxyflavone(ladanein); and 2{\textquoteright},4{\textquoteright},5-trihydroxy-5{\textquoteright},6,7\– trimethoxyflavone (arcapillin). The remaining five flavones were previously identified from this plant as : 4{\textquoteright},5-Dihydroxy-3{\textquoteright},6,7-tri-methoxyflavone(cirsilineol);5,7-dihydroxy-3{\textquoteright},4{\textquoteright},6-trimethoxyflavone (eupatilin);4{\textquoteright},5,7-trihydroxy-3{\textquoteright},6-dimethoxyflavone(jaceosidin);4{\textquoteright},5-dihydroxy-6,7-dimethoxy- flavone (circimaritin) and 4{\textquoteright},5,7-trihydroxy-6-methoxyflavone (hispidulin). In addition, two acetophenone derivatives were isolated from fractions yielded selected flavones and these were identified as 4-hydroxyacetophenone and 3-(2-hydroxymethyl-2-buten-4-yl)-4-hydroxyaceto- phenone. Conclusion: This successful isolation of these natural flavonoids from A. monosperma can contribute further to the evaluation of bioactive compounds against disorders including but not limited to inflammatory associated disorders and microbial infections.

}, keywords = {Antimicrobial activity, Antioxidants, Artemisia monosperma, Flavones}, doi = {10.5530/pj.2018.5.173}, author = {Lubna Abu-Niaaj and Ibrahim Katampe} } @article {361, title = {Chemical Profile and Biological Activities of Essential oil of Aerial parts of Artemisia monosperma Del. Growing in Libya}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {May 2017}, pages = {578-586}, type = {Original Article}, chapter = {578}, abstract = {

Background: From the bioactivity stand point Artemisia monosperma Del. is reputed to have antispasmodic and anthelmintic properties. Various types of secondary metabolites were reported in A. monosperma plants from different localities. Objective: The current study was planned aiming to investigate the influence of stage of development on the composition, antimicrobial, antiinflammatory and antioxidant activities of the essential oil derived from the aerial parts of the Libyan plants. Material and Methods: A. monosperma volatiles were hydro-distilled from aerial parts of Libyan plants, collected at different stages of growth: before flowering (A1), and at beginning (A2) and by the end (A3) of flowering stage. Yields ranged from 0.16-0.26 ml/100g fresh material (A3, highest). GC/FID and GC/MS analyses were performed. Results: Among 16-20 identified components (97.63-99.00\% of total composition), 11 were common in all samples. A1 and A2 showed close amounts of hydrocarbons (63.56 and 66.55\%), but lesser than A3 (88.36\%); monoterpenoids were mainly represented by sabinene (13.15-22.85\%), \β-pinene (9.00-24.03\%) and \β-cis-ocimene (3.73-12.92\%); while sesquiterpenoids appeared absent. Among oxygenated components (11.29, 31.08 and 35.44 \% in A3, A2 and A1), bornyl acetate was the major monoterpenoid (8.00-31.00\%, highest in A1); and the sesquiterpenoid, \β-eudesmol (8.01\%) was detected in A2 only. Moreover, A2 demonstrated significant antifungal effect against Aspergillus fumigatus and Geotricum candidum (MIC 0.98 and 0.24 \μg/ml). Conclusion: A3 exerted the highest anti-inflammatory activity as compared to the other volatiles. A1 restored the reduced blood GHS level in diabetic animals almost as efficiently as Vitamin E. The antioxidant activity of the volatiles is decreased during the flowering stage, being the highest before flowering (A1); this could be associated to the decreasing bornyl acetate content of the samples.

}, keywords = {Anti-oxidant, Antiinflammatory, Antimicrobial, Artemisia monosperma, Essential oil composition, GC-MS, Libya.}, doi = {10.5530/pj.2017.4.92}, url = {/files/PJ-9-4/10.5530pj.2017.4.92}, author = {Soheir Mohamed El Zalabani and Soad Hanna Tadros and Abeer Mohamed El Sayed and Areej Almaktouf Daboub and Amany Amen Sleem} }