Search results for " Libano"
showing 10 items of 11 documents
Antiproliferative activity of hexane extract from Tunisian Cistus libanotis, Cistus monspeliensis and Cistus villosus
2013
Abstract Background As a part of our investigation on Tunisian medicinal plants, we have carried out a phytochemical investigation of the hexane extracts from leaves of Cistus libanotis, C. villosus and C. monspeliensis, evualuating also their possible antiproliferative activity in vitro. Results The major compounds of hexane extracts were identified and quantified by GC-MS. The composition of the three species, although belonging to the same genus, is completely different. The antiproliferative activity was evaluated against murine monocyte/macrophages (J774.A1), human melanoma cells (A-375), and human breast cancer cells (MCF-7), showing major activity against the human melanoma cell line…
Chemistry and functional properties in prevention of neurodegenerative disorders of five Cistus species essential oils.
2013
The chemical composition of Cistus creticus, Cistus salvifolius, Cistus libanotis, Cistus monspeliensis and Cistus villosus essential oils has been examined by GC and GC–MS analysis. Height-nine constituents were identified in C. salvifolius oil, sixty in C. creticus, fifty-six in C. libanotis, fifty-four in C. villosus, forty-five in C. monspeliensis. Although the five species belong to the same genus, the composition showed interesting differences. Essential oils were screened also for their potential antioxidant effects (by DPPH, ABTS, FRAP and b-carotene bleaching test) and their acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity, useful for prevention and …
Phytochemical study of Cistus libanotis L.
2015
n continuation of our ongoing study on Mediterranean Flora, we focused the attention on Cistus genus. These plants possess interesting secondary metabolites and are used in many fields, principally in perfumery and more recently as raw material for food supplements (botanicals). n this article, we report the phytochemical analysis of Cistus libanotis L. from Tunisia. Among the diterpenes, labdane compounds resulted absent, in favour of two clerodanes, one of that never reported in Cistus sp. The main representative compounds were found to be several flavonoids with various grades of O-methylation. Other interesting components were two cinnamic esters of borneol, reported here for the first …
Kaurane diterpenoids from three Sideritis species
2005
Some kaurane diterpenoids were isolated from 3 species of the genus Sideritis (Lamiaceae) growing in the Eastern Mediterranean region. Sideritis libanotica subsp. libanotica contained siderol 2 and sideridiol 3. Sideritis erythrantha var. erythrantha yielded sideridiol 3. Sideritis perfoliata gave siderol 2, sideridiol 3 and sideritriol 4. The products are known as they occur in another species of Sideritis growing in Italy and in other species growing also in Turkey. The products are isolated for the first time from these 3 species. The taxonomic significance of these results is discussed.
Antispasmodic Effects and Structure−Activity Relationships of Labdane Diterpenoids from Marrubium globosum ssp. libanoticum
2009
Marrubium globosum ssp. libanoticum is a medicinal plant used in Lebanon to reduce pain and smooth muscle spasms. A chloroform extract obtained from M. globosum aerial parts reduced acetylcholine-induced contractions in the isolated mouse ileum. The purification of this extract identified, among 12 isolated labdane diterpenoids, four new compounds, named 13-epicyllenin A (4), 13,15-diepicyllenin A (5), marrulibacetal (9), and marrulactone (11). Their structures were determined by spectroscopic methods. Compound 9, which exerted antispasmodic activity, is likely the active ingredient of the extract. Preliminary structure-activity relationships for this class of compounds are suggested.
PERCORSI DI ESEGESI CORANICA : per un rinnovamento del pensiero islamico contemporaneo
2019
Muhammad Hussein Fadlallah è stato uno degli intellettuali di punta dello sciismo imamita del XX secolo, e si colloca in quella scuola di pensiero e azione che, a partire da 'Ali Shariati e passando per Baqir al-Sadr e Musa al-Sadr, ha illustrato íl pensiero sciita contemporaneo. La pubblicazione di questa antologia commentata degli scritti di Fadlallah risulta particolarmente opportuna nel quarantennale della rivoluzione iraniana di Khomeini. Convinto della necessità che la scienza si trasformi in abbrivio all'azione, la tesi capitale di Fadlallah è che l'Islam rifiuta il quietismo e incita alla ribellione, poiché è íl Corano stesso che mobilita gli oppressi secondo il principio della pote…
Cytotoxic properties of Marrubium globosum ssp. libanoticum and its bioactive components
2013
Marrubium globosum Montbr. et Auch. ex Benth. ssp. libanoticum Boiss. (Lamiaceae) is a medicinal plant used in Lebanon for the treatment of inflammatory diseases, asthma, coughs and other pulmonary and urinary problems. The goal of our study was to assess the biological activity of M. globosum by testing different extracts of the aerial parts for their antiproliferative activity against human melanoma cells using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The chloroform fraction showed the greatest activity. The compounds isolated from the extracts were also tested: the mixture of (13 S)-9α,13α-epoxylabda-6β(19),16(15)-diol dilactone and (13 R)-9α,13α-epo…
Hezbollah: storia del Partito di Dio
2015
Il libro è pensato come una ricostruzione della storia del Partito di Dio a partire dalla sua nascita (1985) sino ai giorni nostri e più nello specifico sino al 2009, anno di pubblicazione dell’ultimo manifesto ideologico ufficiale ad oggi disponibile. L’opera è immaginata con lo scopo di ripercorrere l’evoluzione di Hezbollah contestualizzando di volta in volta il suo agire ed il suo pensiero, mantenendo come principale punto di riferimento i documenti in arabo pubblicati dagli organi ufficiali del Partito di Dio. The book is conceived as a reconstruction of the history of the Party of God starting from its birth (1985) up to the present day and more specifically up to 2009, the year of pu…
La cooperazione degli organi del Tribunale speciale per il Libano nella tutela dei diritti dei detenuti in attesa di giudizio
2010
Ad un anno dall’inizio del funzionamento del tribunale Speciale per il Libano, questo articolo ne esamina l’operato in materia di diritti dei detenuti in attesa di giudizio. Nonostante si tratti del primo tribunale penale internazionale competente a conoscere crimini perpetrati in un paese dell’area araba, esso si pone pienamente nel solco evolutivo tracciato dai suoi predecessori ed anzi compie alcuni notevoli passi in avanti in tema di tutela dei diritti dei detenuti. All’interno dell’articolo viene esaminato l’operato di tutti i principali organi del Tribunale, mostrando come la tutela dei diritti umani sia stata una costante che ne ha innervato tutta l’attività, sia quella a carattere n…
Antioxidant activity and chemical composition of three Tunisian Cistus: Cistus monspeliensis Cistus villosus and Cistus libanotis
2015
The chemical composition of three rockrose Cistus species, Cistus monspeliensis, Cistus libanotis and Cistus villosus, collected in Tunisia, was studied by HPTLC, focusing on the terpenes and phenols constituents. Diterpenes of Cistus are important as the main constituents of the leaf sticky aromatic resin, known as labdanum, which are highly appreciated in perfumery. Polyphenols in the methanolic extracts of each species were identified, quantified as total and as flavonoids and tannins, and tested for antioxidant activity. Diterpenes were evident in C. libanotis and C. monspeliensis, whereas they were practically absent in C. villosus; C. libanotis had higher phenolic amount, whereas anti…