35 research outputs found
Pharmacovigilance of the Covid19 therapeutic protocol: Experience of the Hassan II University Hospital of Fez, Morocco and analysis of national and international data
No full textFaced with the pandemic related to the dissemination of the new Coronavirus and the health emergency, Morocco decided to treat patients with Covid-19 with Hydroxychloroquine (HCQ) or Chloroquine (CQ), associated with Azithromycin (AZM) according to a standardized therapeutic scheme, an off-label indication that required pharmacovigilance monitoring to ensure the safety of treated patients. Objective. To present the experience of the Hassan II University Hospital of Fez concerning the management of adverse events of the Covid19 therapeutic protocol. A notification form was made available to the nursing staff to be filled in for any adverse reaction (ADR) observed after the treatment was taken. A daily collection and in-depth analysis was performed. We present the results of the analysis of the data collected in our training between April 21 and August 22, 2020, discussing them with data from national and international databases. 102 ADR cases were collected out of 915 patients hospitalized at the UHC for Covid19 during this period with a prevalence of 11%. 23 patients had underlying defects. The incriminating protocol contained CQ in 55.8% and HCQ in 44.2%. The mean age of the patients was 40.83±17.1 years (18 to 86 years) with a M/F sex ratio of 0.92. The mean time to onset was 3 days (range 1-6 days). The most noted ADRs were digestive, cardiac and neurological. 14 cases were severe (one QT prolongation), 6 of which required transfer to an intensive care unit. The course of action adopted was the restoration of corrective treatment with 12 cases of treatment discontinuation and 8 cases of switching to 2nd line treatment
Aphicidal and Antimicrobial Activities of "Salvia rosmarinus" Essential Oil and Its Major Compound, 1,8-Cineole
No full textInternational audienceThis work uses GC-MS to analyze the bioactive compounds of Salvia rosmarinus essential oils (SREO) and evaluates their antibacterial, antifungal, and insecticidal effects, as well as the major component, 1,8-cineole. Chemical analysis identified 16 compounds accounting for 99.19% of the oil's total content, with 1,8-cineole (33.17%), camphor (16.53%), alpha-pinene (14.46%), and camphene (8.14%) as the major constituents. Antimicrobial activities were assessed against pathogenic strains using minimal inhibit concentration (MIC) and minimum bactericidal concentration (MBC) assays. SREO exhibited a minimum MIC of 0.128% against P. aeruginosa, while 1,8-cineole showed a minimum MIC of 2.06% against the same strain, highlighting the higher efficacy of the complete oil compared to the isolated compound. Conversely, for antifungal activity, 1,8-cineole displayed a lower MIC (2.06%) against A. niger and P. digitatum compared to SREO (4.125% against A. niger). Regarding aphicidal activity, results demonstrated the lethal effects of SREO on M. persicae, with an even more pronounced impact observed for 1,8-cineole. At one dose of 40 1.1L/L air, SREO and 1,8cineole resulted in 100% insect mortality within 24 h of exposure. After 12 h of exposure to SREO at concentrations of 5, 10, 20, and 40 1.1L/L air, the mortality rates were 20%, 36.67%, 70%, and 93.33%. 1,8-cineole showed maximum efficacy, achieving complete (100%) mortality within 12 h at 40 1.1L/L air
Ethnobotanical survey of medicinal plants used in north-central Morocco as natural analgesic and anti-inflammatory agents
No full textFor centuries, the Moroccan population has relied on herbs as medicine to treat a variety of diseases, especially inflammation and pain-related ones. To the best of our knowledge, no survey had ever been conducted to address this subject in the Fez-Meknes region of Morocco. Thus, a survey was conducted of 544 interviewees, using a semi-structured ethnopharmacological survey designed with “Why-How” questions about plants used, their vernacular names, parts used, mode of preparation, and mode of administration. Fidelity level (FL), relative frequency of citation (RFC), frequency of citation (FC), informant consensus factor (ICF), and family importance value (FIV) were calculated. A total of 104 plant species belonging to 49 families used for inflammatory and pain treatment were documented. Lamiaceae (16 species) was the most used family and Curcuma longa L. (RFC=0.069) was the most frequently prescribed by local traditional healers and herbalists. Leaves were the most used part for herbal remedies, appearing in 30.8 % of preparations. Decoctions and infusions were the most popular preparation methods with percentages of 38.3 % and 19.2 %, respectively. Inflammations and pain in the digestive system had the largest widespread affections (IFC= 0.729) in the Fez-Meknes region. The findings of this study uncovered a reliable and original source of ethnomedicinal data pertaining to plants used to treat inflammation and inflammatory pain in the Fez-Meknes region, which could serve as a credible source of knowledge to determine new-based phytomedicines
Insecticidal Potential of Essential Oils from <i>Ammi visnaga</i> L. and <i>Trachyspermum ammi</i> L. against <i>Sitophilus oryzae</i> (L.) and In Silico Study of Their Major Constituents
No full textThere is a high interest in utilizing natural bioactive products derived from plants as a substitute for synthetic chemicals in the industry. This research focuses on the phytochemical composition of essential oils (EOs) of Ammi visnaga L. and Trachyspermum ammi L and their insecticidal activity against Sitophilus oryzae (L.), a common pest found in stored cereals. The EOs were extracted through steam distillation and analyzed using gas chromatography coupled with mass spectrometry (GC-MS). The EOs of A. visnaga consisted of twenty-four components, with Abietadiene (41.23%) being the most abundant, followed by linalool (25.54%) and limonene (19.04%). On the other hand, the EOs of T. ammi consisted of twenty-eight main components, with isothymol being the most abundant (51.88%). The results revealed that the EOs of T. Ammi (DL50 = 0.1 µL EOs/L of air) were more toxic than A. visnaga (0.38 µL EOs/L of air), with the toxicity varying based on doses and exposure periods. To further understand the molecular mechanisms underlying this activity, molecular docking and dynamic simulations were performed using the major chemical constituents of the oils. The simulation results indicated that the major compounds, Abietadiene and isothymol, interact with the catalytic sites of the target proteins, inhibiting acetylcholinesterase and chitin synthase. These interactions form energetically favorable systems that remain stable throughout the molecular dynamic period. This research provides valuable insights into the potential of these EOs as natural insecticides and highlights the importance of molecular modeling in understanding the biological activities of plant-derived compounds
A Study of the Bioactive Compounds, Antioxidant Capabilities, Antibacterial Effectiveness, and Cytotoxic Effects on Breast Cancer Cell Lines Using an Ethanolic Extract from the Aerial Parts of the Indigenous Plant Anabasis aretioïdes Coss. & Moq.
No full textAnabasis aretioïdes contain numerous bioactive compounds that provide several advantages, including antioxidant, antibacterial, anticancer, neuroprotective, anti-inflammatory, and antidiabetic characteristics. This study aimed to make a hydroethanolic extract from the aerial part of the plant, analyze its biochemical compounds, and test its biological activities. From HPLC-DAD analysis, cinnamic acid, sinapic acid, and vanillin bioactives were found to be the main compounds in the extract. The spectrometric tests revealed that the extract was rich in flavonoids (8.52 ± 0.32 mg RE/100 g DW), polyphenols (159.32 ± 0.63 mg GAE/100 g DW), and condensed tannins (8.73 ± 0.23 mg CE/100 g DW). The extract showed significant antioxidant activity. There were strong correlations between the amount of flavonoid or polyphenol and the antioxidant assays, including ABTS, DPPH, β-carotene, and TAC. The extract also showed highly effective results against Gram-positive bacteria Staphylococcus aureus and Enterococcus faecalis as well as against Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa, and showed promising cytotoxicity against breast cancer cell lines MCF-7 and MDA-MB-231. The in silico modeling of the bioactive compounds contained in the extract illustrated their interaction mode with the active sites of particular target proteins, and it showed that rutin had the strongest effect on stopping NADPH oxidase enzyme, with a glide score of −6.889 Kcal/mol. Sinapic acid inhibited E. coli beta-ketoacyl-[acyl carrier protein] synthase (−7.517 kcal/mol), and apigenin showed high binding affinity to S. aureus nucleoside di-phosphate kinase, with −8.656 kcal/mol. Succinic acid has the strongest anticancer effect for caspase-3, with a glide score of −8.102 kcal/mol. These bioactive components may be beneficial as antioxidant and antibacterial applications in medicine, foods, natural cosmetics, and breast cancer prevention in the future. As a result, the use of this indigenous plant must be considered to maximize its value and preservation
Antifungal, Insecticidal, and Repellent Activities of Rosmarinus officinalis Essential Oil and Molecular Docking of Its Constituents against Acetylcholinesterase and β-Tubulin
No full textThe aim of this study was to determine the phytochemical composition and evaluate the antifungal and insecticidal properties of Rosmarinus officinalis essential oil (EO). GC-MS was employed to analyze the phytochemical profile of the EO. The antifungal activity of the EO was assessed by calculating growth inhibition rates for Alternaria alternata, Fusarium oxysporum, and Botrytis cinerea. Repellent capacity and toxicity were evaluated through inhalation and contact tests on Callosobruchus maculatus. Molecular docking techniques were utilized to test the insecticidal and antifungal activities of rosemary EO. The analysis revealed a total of sixteen components in R. officinalis EO, with 1,8-cineole (40.80%) being the major constituent, followed by α-pinene (26.18%) and camphor (19.53%). Antifungal evaluation demonstrated a significant inhibitory impact on the mycelial growth of the tested fungi, with complete inhibition observed against B. cinerea. In terms of insecticidal capacity, the EO induced complete mortality of C. maculatus adults at a concentration of 1 μL/L air, with an inhalation test LC50 value of 0.62 μL/L air. Concentration-dependent reductions were observed in the number of both laid eggs and emerged insects, reaching a 99.36% reduction. The EO also exhibited a moderate effectiveness in repelling insects, with an average repellency rate of 50.83%. In silico analysis identified borneol as the most active molecule against insect acetylcholinesterase (PDB: 6ARY) with a Glide score of −7.254 kcal/mol. α-Caryophyllene showed the highest activity against B. cinerea β-tubulin (PDB: 3N2G) with a Glide score of −7.025 kcal/mol. These findings suggest that the EO derived from Moroccan Rosmarinus officinalis has potential as an effective natural agent against pathogenic fungi and could serve as a sustainable and environmentally friendly alternative as a bioinsecticide
Antioxidant potential, antimicrobial activity, polyphenol profile analysis, and cytotoxicity against breast cancer cell lines of hydro-ethanolic extracts of leaves of (Ficus carica L.) from Eastern Morocco
No full textIntroductionMany beneficial compounds found in fig leaves can be used in tea and medicine. These compounds aid with digestion, reduce inflammation, and treat diabetes and bronchitis. Chetoui, Malha, Ghoudane, and Onk Hmam fig leaf hydro-ethanol extracts from Eastern Morocco were analyzed for metabolites and biological activities.Methods, results, and discussion:HPLC-UV examination revealed that the leaf extract included mainly caffeine, rutin, and ferrulic acid. Spectrophometric results show that Malha leaf is rich in polyphenols (62.6 ± 1.3 mg GAE/g) and flavonoids (26.2 ± 0.1 mg QE/g). Chetoui leaf contains the highest vitamin C content (8.2 ± 0.1 mg Asc A/100 g DW), while Onk Hmam leaf has the highest condensed tannin (4.9 ± 0.1 mg CatE/g). The investigations found that all leaf extracts were antioxidant-rich, with strong Pearson bivariate correlation between bioactive polyphenol levels and antioxidant tests for DPPH, β-carotene, ABTS, and TAC (values of −0.93, −0.94, −0.85, and 0.98, respectively). The coefficients for flavonoid content were −0.89, −0.89, −0.97, and 0.80, respectively. Disk diffusion and MIC results show that the hydro-ethanol fig leaf extracts eliminate fungi and bacteria. In addition, these fig leaf extracts showed promise cytotoxicity against the breast cancer cell lines MCF-7, MDA-MB-231, and MDA-MB-436 and an interesting selectivity index. In silico leaf bioactive component analysis revealed that myricitin inhibited NADPH oxidase the greatest (gscore −6.59 Kcal/mol). Trans-ferulic acid inhibits Escherichia coli beta-ketoacyl-[acyl carrier protein] synthase (−6.55 kcal/mol), whereas quercetin inhibits Staphylococcus aureus nucleoside diphosphate kinase (−8.99). CYP51 from Candida albicans is best treated with kaempferol and myricitin. Both had a glide gscore of −7.84 kcal/mol. Rutin has the most potent Sespace 3 anticancer activity, with a glide gscore of −7.09 kcal/mol.ConclusionThis research indicates that fig leaf extracts from the region can be used in medicine, food, natural cosmetics, and breast cancer prevention. To maximize the value of these leaves, their use must be carefully studied. Naturally, this fortunate tree’s diversity must be preserved and enhanced
Genetic Characterization and Chemical Identification of Moroccan <i>Cannabis sativa</i> (L.) Seeds: Extraction, and <i>In Vitro</i> and <i>In Silico</i> Biological Evaluation
No full textThis study investigated the molecular, phytochemical, and biological aspects of ten local Moroccan traditional landrace Cannabis seeds. Genetic polymorphisms were analyzed using DNA barcode determination, revealing two distinct molecular profiles: “Cannabis, species sativa, subspecies indica” and “Cannabis, species sativa, subspecies sativa”. Furthermore, a new sequence was identified by sequencing of the THCA synthase coding gene. Chemical profiling via HPLC-ESI-FULL-MS and GC-MS-MS of AMSD1 maceration extracts revealed 13 non-volatile chemicals, including 3 inactive cannabinoids and 3 polyphenols, and 24 intriguing volatile compounds, including 7 previously unreported in Cannabis seed extracts. Moreover, the in vitro/in silico analysis provision of biological activities through their antioxidant power, antimicrobial effect, and cytotoxicity potency, as well as antiviral activity, were realized. These results contribute to a thorough comprehension of Moroccan Cannabis seeds, illuminating their molecular, phytochemical, and biological features. Furthermore, they highlight the seeds as a potential source of nutritious components with antioxidant properties, offering valuable insights for future research
A Comparative Study of the Phytochemical Composition, Antioxidant Properties, and In Vitro Anti-Diabetic Efficacy of Different Extracts of Caulerpa prolifera
No full textInternational audienceThe Moroccan coastline has been the focus of attention for researchers studying the national algal flora, with the aim of preserving these invaluable natural resources. Since the year 2000, these resources have stimulated great interest in the creation of new drugs, as well as their integration into food supplements and foods. Therefore, this study aims to explore the phytochemistry of a series of extracts derived from Caulerpa prolifera. To ensure better extraction of the various metabolites present, two extraction methods, namely maceration and the Soxhlet method, were employed using solvents of varying polarity (hexane, ethyl acetate, methanol, and water). The chemical composition of the extracts was analyzed using GC-MS for fatty acids and HPLC-DAD for phenolic compounds. Antioxidant activity was evaluated using DPPH and β-carotene bleaching assays, while antidiabetic potential was assessed by in vitro inhibition of α-amylase and α-glucosidase. In addition, Molecular docking models were employed to assess the interaction between the bioactive molecules and the human pancreatic α-amylase and α-glucosidase enzymes. Vanillin, p-coumaric acid, sinapic acid, 7,3′,4′-flavon-3-ol, and kaempferol were the most abundant phenolic compounds. Anti-diabetic and antioxidant effects were highly significant
Study of the Phytochemical Composition, Antioxidant Properties, and In Vitro Anti-Diabetic Efficacy of Gracilaria bursa-pastoris Extracts
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