Yazar "Campestre, Cristina" seçeneğine göre listele

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    Analysis of imidazoles and triazoles in biological samples after MicroExtraction by packed sorbent
    (TAYLOR & FRANCIS LTD, 2017) Campestre, Cristina; Locatelli, Marcello; Guglielmi, Paolo; De Luca, Elisa; Bellagamba, Giuseppe; Menta, Sergio; Zengin, Gökhan
    This paper reports the MEPS-HPLC-DAD method for the simultaneous determination of 12 azole drugs (bifonazole, butoconazole, clotrimazole, econazole, itraconazole, ketoconazole, miconazole, posaconazole, ravuconazole, terconazole, tioconazole and voriconazole) administered to treat different systemic and topical fungal infections, in biological samples. Azole drugs separation was performed in 36 min. The analytical method was validated in the ranges as follows: 0.02-5 mu g mL(-1) for ravuconazole; 0.2-5 mu g mL(-1) for terconazole; 0.05-5 mu g mL(-1) for the other compounds. Human plasma and urine were used as biological samples during the analysis, while benzyl-4-hydroxybenzoate was used as an internal standard. The precision (RSD%) and trueness (Bias%) values fulfill with International Guidelines requirements. To the best of our knowledge, this is the first HPLC-DAD procedure coupled to MEPS, which provides the simultaneous analysis of 12 azole drugs, available in the market, in human plasma and urine. Moreover, the method was successfully applied for the quantitative determination of two model drugs (itraconazole and miconazole) after oral administration in real samples.
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    A comparative assessment of biological effects and chemical profile of Italian asphodeline lutea extracts
    (MDPI, 2018) Melucci, Dora; Locatelli, Marcello; Locatelli, Clinio; Zappi, Alessandro; De laurentiis, Francesco; Carradori, Simone; Campestre, Cristina; Leporini, Lidia; Zengin, Gökhan; Picot, Carene Marie Nancy; Menghini, Luigi; Mahomoodally, Mohamad Fawzi
    The present study aims to highlight the therapeutic potential of Asphodeline lutea (AL), a wild edible plant of the Mediterranean diet. Roots, aerial parts, and flowers of AL at two different phenological stages were collected from three locations in Italy. The inhibitory activities of extracts on strategic enzymes linked to human diseases were assessed. The antioxidant properties were evaluated in vitro, using six standard bioassays. The phenolic and anthraquinone profiles were also established using HPLC-PDA. Zinc, cadmium, lead, and copper contents were also determined. All the samples inhibited acetylcholinesterase (from 1.51 to 2.20 mg GALAEs/g extract), tyrosinase (from 7.50 to 25.3 mg KAEs/g extract), and alpha-amylase (from 0.37 to 0.51 mmol ACAEs/g extract). Aloe-emodin and physcion were present in all parts, while rhein was not detected. The phenolic profile and the heavy metals composition of specimens gathered from three different regions of Italy were different. It can be argued that samples collected near the street can contain higher concentrations of heavy metals. The experimental data confirm that the A. lutea species could be considered as a potential source of bioactive metabolites, and its consumption could play a positive and safe role in human health maintenance.
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    Phytochemical Analyses and Pharmacological Screening of Neem Oil
    (ELSEVIER, 2019) Cesa, Stefania; Sisto, Francesca; Zengin, Gökhan; Scaccabarozzi, Diletta; Kokolakis, Antonios K.; Scaltrito, Maria Maddalena; Grande, Rossella; Locatelli, Marcello; Cacciagrano, Francesco; Angiolella, Letizia; Campestre, Cristina; Granese, Arianna; Chimenti, Paola; Basilico, Nicoletta
    An Italian certified Neemseed oil was characterized through the color analysis, the HPLC phenolic fingerprint and the preliminary evaluation of the cytotoxicity profile against the human macrophage (THP-1) cell line. Moreover, a wide screening of its enzyme inhibitory profile, antimicrobial activity towards Helicobacter pylori, several Candida spp. and Malassezia furfur strains and antiprotozoal activity against Plasmodium falciparum, Leishmania infantum and Leishmania tropica were performed. Neemseed oil demonstrated low toxicity and a great inhibitory efficacy against tyrosinase and lipase enzymes. Antimalarial and anti-leishmanial activities were also demonstrated, but weak or no activity was evidenced against Helicobacter pylori, Candida and Malassezia strains. Overall, these findings encourage the potential use of this natural product in some disease treatments and justify its use in traditional medicine. (c) 2018 SAAB. Published by Elsevier B.V. All rights reserved.