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Profiles of the Headspace Volatile Organic and Essential Oil Compounds from the Tunisian Cardaria draba (L.) Desv. and Its Leaf and Stem Epidermal Micromorphology

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 725-744页

作者： Wissal Saadellaoui Samiha Kahlaoui Kheiria Hcini Abir Haddada Noomene Sleimi Roberta Ascrizzi Guido Flamini fethia Harzallah-Skhiri Sondes Stambouli-Essassi Laboratory of Biodiversity Biotechnology and Climate Change(LR11-ES09)Faculty of Sciences of TunisUniversity of Tunis El ManarTunis1060Tunisia Laboratory RME-Resources Materials and EcosystemsFaculty of Sciences of BizerteUniversity of CarthageJarzounaBizerte7021Tunisia Dipartimento di Farmacia Universitàdi PisaVia Bonanno 33Pisa56126Italy Laboratory of Bioresources:Integrative Biology and Valorization(LR14-ES06) High Institute of Biotechnology of MonastirUniversity of MonastirMonastir5000Tunisia

In this work, we investigated aroma volatiles emanated by dry roots, stems, leaves, flowers, and fruits of Cardariadraba (L.) Desv. growing wild in Tunisia and its aerial part essential oils (EOs) composition. A total of 37 volatileorganic compounds (96.7%–98.9%) were identified;4 esters, 4 alcohols, 7 hydrocarbons, 12 aldehydes, 5 ketones,1 lactone, 1 organosulfur compound, 2 organonitrogen compounds, and 1 acid. The hydrocarbons form the maingroup, representing 49.5%–84.6% of the total detected volatiles. The main constituent was 2,2,4,6,6-pentamethylheptane(44.5%–76.2%) reaching the highest relative percentages. Forty-two compounds were determined in thetwo fractions of EOs, representing 98.8% and 97.2% of the total oil composition, respectively. The principal componentswere hexadecanoic acid (34.6%), 6-methyl-5-hepten-2-one (18.3%), decanal (15.0%), 6,10,14-trimethyl-2-pentadecanone (13.2%), and n-pentacosane (13%). Micromorphological details of the leaf and stem epidermisusing light microscopy revealed polygonal cells with sinuous walls in the adaxial and abaxial leaf surfaces andnearly rectangular and long ones with linear and thick walls for the stem epidermis. The stomata complexes wereanisocytic in the leaf epidermis and mainly anisocytic and rarely paracytic in the stem epidermis. Non-glandulartrichomes were unbranched and long with an acute apex or short with a convex apex. The glandular ones wereidentified for the first time in this species. They were short-stalked with a large secretory head. The highest stomatalindex (17.02%) was recorded in the abaxial leaf surface. The identification of headspace volatiles and essentialoil compounds can be used to characterize this species, and the various epidermis micromorphologicalfeatures are very useful for biosystematics taxonomic studies within Brassicaceae.

关键词： Cardaria draba aroma profile essential oils epidermis trichomes

Antioxidant and ɑ-glucosidase activities and phytochemical constituents of Chrysanthoglossum trifurcatum(Desf.)

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Asian Pacific Journal of Tropical Medicine 2018年第4期11卷 285-291页

作者： Ahlem Ben Sassi Sana Amroussi Malek Besbes Mahjoub Aouni fethia Skhiri Laboratory of Transmissible Diseases and Biologically Active Substances Department of Microbiology Faculty of Pharmacy University of Monastir Laboratory of Genetics Biodiversity and Valorisation of Bioresources Higher Institute of Biotechnology University of Monastir

Objective: To investigate the antioxidant and ɑ-glucosidase properties and phytochemical constituents of roots, stems, leaves and flowers extracts and aerial parts oil of Chrysanthoglossum trifurcatum(Desf.)(C. trifurcatum). Methods: For extraction from roots, stems, leaves and flowers of C. trifurcatum, methanol, ethyl acetate and petroleum ether solvents were used. Phenols, flavonoids, flavonols and tannins contents were evaluated. More, C. trifurcatum aerial parts oil composition was determined using chromatography/mass spectrometry. The antioxidant effect was estimated by DPPH, ABTS and reducing power test systems. The ɑ-glucosidase inhibition was determined by colorimetric assay using the enzyme from Aspergillus niger and the p-nitrophenyl glucopyranoside(pNPG) as substrate. Results: The highest amounts of polyphenols, flavonoids, flavonols and tannins were shown by the methanolic extract of leaves. The main components of the aerial parts oil were limonene(29.21%), γ-terpinene(12.96%), 4-terpenyl acetate(12.18%) and ɑ-pinene(5.76%). The activity evaluated by DPPH, ABTS and reducing power tests was important for stems(IC_(50)=0.68 mg/mL) and flowers(IC_(50)=0.67 mg/mL) methanolic extracts and essential oil(IC_(50)=0.72 mg/mL). Findings of ɑ-glucosidase activity revealed that petroleum ether extracts of leaves and roots together with aerial parts oil showed a highest activity with IC_(50) of 0.044, 0.045 and 0.049 mg/m L, respectively. Conclusions: Observed antioxidant and ɑ-glucosidase activities of oil and extracts are attributed to the presence of the active phytochemicals in C. trifurcatum organs. Thus, the C. trifurcatum can be used as a source of antioxidant compounds and dietary supplement to treat patients with type 2 diabetes.

关键词： Antioxidant ɑ-glucosidase Phenolic content Oil Chrysanthoglossum trifurcatum

Three siblings with gyrate atrophy of the choroid and retina:a case report

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International Journal of Ophthalmology(English edition) 2023年第12期16卷 2133-2135页

作者： maamouri Rym Ferchichi Molka Ben Chehida Amel Hadj-Taieb Sameh Cheour Monia Department of Ophthalmology Habib Thameur HospitalTunis 1069Tunisia Department of Pediatrics Rabta HospitalTunis 1007Tunisia Laboratory of Biochemistry Rabta HospitalTunis 1007Tunisia University of Tunis El Manar Faculty of Medicine of Tunis 1068Tunisia

Dear Editor,We report the cases of three siblings with gyrate atrophy(GA)of the choroid and retina with foveoschisis,anterior subcapsular cataracts,and capsular bag *** is a rare autosomal recessive degenerative disorder of the choroid and *** one-third of all reported cases are from Finland where the incidence is estimated to be around 1:50000 whereas the theoretical global incidence is only 1:1500000[1].

关键词： atrophy cases cataract

Comparative Study of the DTC-IM Speed Controller Based on Artificial Intelligence

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Computer Technology and Application 2012年第5期3卷 347-352页

作者： fethia Hamidia Abdelakader Larabi Mohamed Seghir Boucherit Electrical Engineering Department Ecole National Polytechnique ENP El-harrach 16200 Algiers Algeria Electrical Engineering Department USTHB University Bab-ezzouar 16111 Algiers Algeria

Recently, artificial intelligence technique is increasingly receiving attention in solving complex and practical problem and they are widely applying in electrical machine domain. The authors consider also the direct torque control （DTC） as an alternative to conventional methods of control by pulse width modulation （PWM） and by Field oriented control （FOC）, so the application of the DTC based on artificial intelligence can show more advantages and simplified control algorithms with high performance. For this reason, the objectives of this paper can be divided into two parts, the first part is to apply neural networks and fuzzy logic techniques to the DTC control in the presence of a loop speed control comparing to the conventional regulators （as PI） to show the feasibility of these approaches, the second part is to further improve the performance of the neural network by using a neural-fuzzy regulator which combine the advantages of two techniques. Simulation results confirm the validity of the proposed techniques.

关键词： Direct torque control induction motor neural network fuzzy PI.

含庚型肝炎病毒E2基因片段质粒DNA能诱发相当强烈的体液免疫应答(英文)

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生物工程学报 2004年第5期20卷 683-688页

作者： fethia Ben Yebdri Abderrahmane AAZAZ 叶凯马辉文童立恒武汉大学药学院武汉430072 武汉生物技术研究开发中心武汉430030

研究了庚型肝炎病毒E2 (HGVE2 )基因片段作为DNA疫苗的可行性。将来自于质粒pThioHis E2编码HGVE2的基因片段 (5 5 9bp)亚克隆到质粒pCMV S中 ,使之和HBsAg基因位于同一阅读框 ,形成重组质粒pCMV S E2。用纯化的质粒pCMV S E2DNA注射到... 详细信息

研究了庚型肝炎病毒E2 (HGVE2 )基因片段作为DNA疫苗的可行性。将来自于质粒pThioHis E2编码HGVE2的基因片段 (5 5 9bp)亚克隆到质粒pCMV S中 ,使之和HBsAg基因位于同一阅读框 ,形成重组质粒pCMV S E2。用纯化的质粒pCMV S E2DNA注射到昆明小鼠后腿四头肌中来免疫小鼠 ,同时用pCMV S作为对照。间隔 14天再加强一次免疫。在加强免疫后的第 8天眼眶取血。用E2 GST融合蛋白作为固定化抗原 ,通过ELISA检测受试小鼠的体液免疫应答。结果表明 ,用质粒pCMV S

关键词： DNA疫苗庚型肝炎病毒 E2 基因片段质粒DNA 体液免疫

Extranodal Tuberculosis of Head and Neck: A Series of 29 Cases

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Journal of Tuberculosis Research 2019年第3期7卷 148-158页

作者： Sameh Mezri Ghassen Chebbi Manel Chebbi Sabrine maamouri Rania Ben Mhamed Khemaies Akkari ENT Department Military Hospital of Tunis Tunis Tunisia

Background: Despite a re-increase in the incidence of tuberculosis, extranodal location on head and neck remains rare. Clinical symptomatology is non-specific and even data from paraclinical explorations often pose the problem of differential diagnosis with tumor pathology. Methods: We report a series of 29 cases of extranodal tuberculosis collected over a period of 32 years [1986-2018] in ENT department of the military hospital of Tunis. Results: Rhinosinusopharyngeal involvement was predominant (45%) followed by glandular involvement (14%). Diagnosis was histopathological in most cases. Concomitant pulmonary tuberculosis was detected in two cases and spinal lumbar in one case. Treatment was medical in all cases. Conclusion: Clinical presentation of extranodal tuberculosis is various and non-specific. Neoplastic pathology is the main differential diagnosis. However, diagnosis should be systematically raised in endemic countries. Treatment is essentially medical.

关键词： Tuberculosis ENT Extranodal

Total phenolic compounds,antioxidant potential and α-glucosidase inhibition by Tunisian Euphorbia paralias L.

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Journal of Coastal Life Medicine 2016年第8期4卷 628-633页

作者： Malek Besbes Hlila Kaouther Majouli fethia Harzallah Skhiri Hichem Ben Jannet Mahjoub Aouni Maha Mastouri Boulbaba Selmi Laboratory of Transmissible Diseases and Biological Active Substances Faculty of PharmacyUniversity of MonastirAvenue Avicenne5000 MonastirTunisia Biochemistry Laboratory:Cell Signaling and Pathologies Research Unit:UR 12ES08Faculty of Medicine of MonastirTunisia Laboratory of Genetic Biodiversity and Valorisation of BioresourcesLR11ES41Higher Institute of Biotechnology of MonastirUniversity of MonastirMonastir 5000Tunisia Laboratory of Heterocyclic Chemistry Natural Products and ReactivityTeam:Medicinal Chemistry and Natural ProductsFaculty of Sciences of MonastirUniversity of MonastirMonastirTunisia Laboratory of Bioresources:Integrative Biology and exploiting Higher Institute of Biotechnology of MonastirMonastirTunisia

Objective:To examine the potential antioxidant and anti-α-glucosidase inhibitory activities of Tunisian Euphorbia paralias *** and stems extracts and their composition of total polyphenol and ***:The different samples were tested for their antiradical activities by using 2,2’-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS)and 1,1-diphenyl-2-picrylhydrazyl(DPPH)***α-glucosidase activity,α-glucosidase(0.3 IU/mL)and substrate,2500μmol/L p-nitrophenylα-D-glucopyranoside were used;absorbance was registered at 405 ***:The leaves acetonic extract exhibited the strongestα-glucosidase inhibition[IC_(50)=(0.0035±0.001)μg/mL],which was 20-fold more active than the standard product(acarbose)[IC_(50)=(0.07±0.01)μg/mL].Acetonic extract of the leaves exhibited the highest quantity of total phenolic[(95.54±0.04)μg gallic acid equivalent/mg]and flavonoid[(55.16±0.25)μg quercetin equivalent/mg].The obtained findings presented also that this extract was detected with best antioxidant capacity[IC_(50)=(0.015±0.01)μg/mL]against DPPH and a value of IC_(50)equal to(0.02±0.01)μg/mL against *** relationship between polyphenolic content of the tested Euphorbia paralias *** and stems extracts and its antioxidant activity(DPPH and ABTS)was *** positive linear correlation was got between ABTS and total phenolic(R^(2)=0.751).Conclusions:The findings clearly demonstrate that the use of a polar solvent enables extraction of significant quantities of phenol compounds and flavonoids.

关键词： Euphorbia paralias L. Polyphenolic compounds Antioxidant activity Anti-α-glucosidase activity

Isolation of bioactive antioxidant compounds from the aerial parts of Allium roseum *** *** Regel.

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Journal of Coastal Life Medicine 2016年第4期4卷 305-309页

作者： Lamia Sakka Rouis-Soussi Asma El Ayeb Saoussen Ben Salem Hichem Ben Jannet fethia Harzallah-Skhiri Laboratory of Genetic Biodiversity and Valorisation of BioresourcesLR11ES41Higher Institute of Biotechnology of MonastirUniversity of MonastirMonastir 5000Tunisia Laboratory of Heterocyclic Chemistry Natural Products and ReactivityLR11SE39Team:Medicinal Chemistry and Natural ProductsFaculty of Science of MonastirUniversity of MonastirMonastir 5000Tunisia

Objective:To assess the antioxidant activity of aerial parts of Allium roseum *** *** Regel.(*** *** *** Regel.)for the first time,as well as to isolate the main bioactive ***:The chloroformic extract of Allium roseum(***)and their fractions obtained by subjection to a chromatographic study were tested for their antioxidant activities by using 2,2-diphenyl-2-picrylhydrazyl and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)*** activity-guided purification was conducted to isolate five compounds in pure form where their structures were identified by means of nuclear magnetic resonance analyses,including 1D and 2D nuclear magnetic resonance ***:The evaluation of the antioxidant activity of chloroformic extract and their fractions from *** *** *** *** interesting *** active chloroformic extract afforded five isolated compounds where their structures were identified as β-sitosterol(1),chrysoeriol(2),luteolin(3),apigenin(4),andβ-sitosterol 3-O-β-D-glucoside(5).All the compounds were isolated for the first time from the *** *** *** *** three flavonoids(2–4)exhibited the highest antioxidant activity with IC_(50) values of 62.28,21.26 and 513.42μg/mL,respectively(2,2-diphenyl-2-picrylhydrazyl assay)and 218.00,73.50 and 877.66μg/mL,respectively[2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)assay].An important value of trolox equivalent antioxidant capacity(2.10 mmol/L)was reported for luteolin(3).Conclusions:These results may suggest that the *** *** *** *** great potential as a source of a natural preservative ingredient in beneficial for natural health products.

关键词： Allium roseum var.grandiflorum subvar.typicum Regel. Bio-guided isolation Antioxidant activity Flavonoids

Unusual presentation of severely disseminated and rapidly progressive hydatic cyst: Malignant hydatidosis

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World Journal of Hepatology 2015年第3期7卷 633-637页

作者： Aya Hammami Olfa Hellara Walid Mnari Chaouki Loussaief fethia Bedioui Leila Safer Mondher Golli Mohamed Chakroun Hammouda Saffar Department of Gastroenterology and Hepatology University Hospital Fattouma Bourguiba Department of Radiology and Medical Imaging University Hospital Fattouma Bourguiba Department of Infectiology University Hospital Fattouma Bourguiba

The infection caused by the tapeworm Echinococcus granulosus leads to the development of hydatic disease. It is the most frequent mediterranean parasitic infection that commonly affects the liver and rarely involves multiple organs. Herein, we report an exceptional and confusing presentation of hepatopulmonary and splenic hydatidosis due to Echinococcus granulosus that caused diagnostic problems occuring in a 70-year-old man, treated with chemotherapy, with favorable outcome. This was a very unusual case of disseminated hydatid cyst highlighting the interest of keeping a high level of clinical suspicion of this diagnosis every time we have a cystic lesion of the liver.

关键词： Hydatid cyst Echinococcus granulosus Disseminated echinococcosis Albendazole