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Evaluation of Some Secondary Metabolites and Determination of the Antioxidant Potential of Different Extracts from the Plant of <i>Pteridium aquilinum</i>

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American Journal of Analytical Chemistry 2021年第12期12卷 506-519页

作者： Arnaud W. G. Tamba Sompila Aimé B. Madiélé Mabika Nadia P. G. Pambou-Tobi Tsiba Gouollaly jacques E. Moussounga Gl.r.a l. l. Bissombolo N’simba roniche Nguie louis Matos National Institute for research in Engineering Sciences Innovation and Technology Scientific City Brazzaville Congo laboratory of Food and Medical Bioprocesses National Polytechnic School Marien Ngouabi University Brazzaville Congo National Polytechnic School Marien Ngouabi University Brazzaville Congo Plant and life Chemistry Unit Faculty of Science and Technology Marien Ngouabi University Brazzaville Congo National Institute for research in Health Sciences Scientific City Brazzaville Congo Pole of Excellence in Food and Nutrition Faculty of Science and Technology Marien Ngouabi University Brazzaville Congo

The present study aims to make an evaluation of some secondary metabolites and determination of the antioxidant potential of P. aquilinum plant extracts obtained by means of a simple and rapid TlC method. The latter revealed the presence of terpenes, sterols, steroids, flavonoids, polyphenols, saponins, sugars and amino acids. The evaluation of the potential antioxidant was assessed on phenolic and flavonoid compounds. These compounds’ dosages revealed different levels, but the highest antioxidant activity was found in the hydro-ethanol extract followed by the aqueous extract. Among the two families of evaluated antioxidants, phenolic compounds were found to be higher in the hydro-ethanolic extract (75.18 mgEAG/gMS), followed by the aqueous extract (66.78 mgEAG/gMS) and lower in the ethanolic extract (12.39 mgEAG/gMS). Whereas flavonoids, less significantly elevated, showed values of 2.58 mgECa/gMS for the hydro-ethanolic extract, 2.24 mgECa/gMS for the aqueous extract and 1.58 mgECa/gMS for the ethanolic extract. However, the antiradical activity was also evaluated. Contrary to the antioxidant activity, the most important antiradical activity was observed on the hydroethanolic extract with a rate of 3.61 mg/ml, then a weak activity on the aqueous and ethanolic extracts respectively 6.18 mg/ml and 15.81 mg/ml, then less important on the aqueous and hydro-ethanolic extracts respectively at levels of 6.18 mg/ml and 3.61 mg/ml.

关键词： Evaluation Extracts Secondary Metabolites Potential Antioxidant Pteridium aquilinum

Chronic pancreatitis:A surgical disease?role of the Frey procedure

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World Journal of Gastrointestinal Surgery 2014年第7期6卷 129-135页

作者： Alexra roch Jérome Teyssedou Didier Mutter jacques Marescaux Patrick Pessaux Digestive and Endocrine Surgery Nouvel Hopital CivilUniversity of Strasbourg67000 StrabourgFrance Institut de recherche en cancéro-logie de l’appareil digestif(IrCAD) 67000 StrasbourgFrance IHU-Strasbourg Minimally-Inva-sive Image-Guided Surgical InstituteUniversity of Strasbourg67000 StrabourgFrance

Although medical treatment and endoscopic interven-tions are primarily offered to patients with chronic pancreatitis, approximately 40% to 75% will ultimately require surgery during the course of their disease. Al-though pancreaticoduodenectomy has been considered the standard surgical procedure because of its favorable results on pain control, its high postoperative complica-tion and pancreatic exocrine or/and endocrine dysfunc-tion rates have led to a growing enthusiasm for duodenal preserving pancreatic head resection. The aim of this review is to better understand the rationale underlying of the Frey procedure in chronic pancreatitis and to ana-lyze its outcome. Because of its hybrid nature, combin-ing both resection and drainage, the Frey procedure has been conceptualized based on the pathophysiology of chronic pancreatitis. The short and long-term outcome, especially pain relief and quality of life, are better after the Frey procedure than after any other surgical proce-dure performed for chronic pancreatitis.

关键词： Chronic pancreatitis Frey procedure Surgery Complication Outcome

Ambient Vibration recording for Single-Station, Array and Building Studies Made Simple: CityShark Ⅱ

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International Journal of Geosciences 2012年第6期3卷 1168-1175页

作者： Jean-luc Chatelain Bertrand Guillier Philippe Gueguen Julien Frechet jacques Sarrault Institut de recherche pour le Developpement GrenobleFrance Institut Francais des Sciences et Technologies des Transports de l’Amenagement et des reseaux GrenobleFrance Ecole et Observatoire des Sciences de la Terre StrasbourgFrance laboratoire d’Electronique Angelidis Sarrault Saint IsmierFrance

This article describes an improved data acquisition system from a previous system dedicated to one-sensor site studies, aimed at recording ambient vibrations (microtremors). A multi-channel and/or remote triggering system is proposed. The system was conceived by IrD-leas, France, and used at ISTerre, France, for research activities. The size, weight of this high quality system and its autonomy (no need to be connected to a laptop) make it a real portable device. The system acquires data with 24-bit delta-sigma ADCs in the 10 - 1000 sps range at 10 - 20 bit resolution on up to 18 channels in the multi-channel version. The input stage dynamics is available at ±2.5 V or ±5 V. The dynamic range varies, for example, from 108 dB at 100 sps to 90 dB at 250 sps. Gain is selectable from 1 (0 dB) to 8192 (78 dB) by powers of two (6 dB). Its very low level of internal noise allows recording of very low tension signals without missing code. Continuous recording and GPS may also be implemented in the system. While primarily dedicated to ambient vibration recordings, this system can be connected to any type of device delivering an output tension in the ±5 V range.

关键词： CityShark Ambient Vibrations H/V Building Array Earthquakes Portable recorder Earthquakes

rapid HPlC Method for Determination of Parachl.r.aniline in Chl.r.exidine Antiseptic Agent in Mouthrinses, Ophthalmic and Skin Solution

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American Journal of Analytical Chemistry 2011年第4期2卷 422-428页

作者： Alain Nicolay Estelle Wolff Marie-France Vergnes jacques Kaloustian Henri Portugal 不详

We described a simple and rapid method to quantify simultaneously chl.r.exidine (CHD) and its major metabolite, para Chl.r.aniline (pCA) by HPlC with UV detection without the additional need of mobile-phase amine modifiers or ion-pairing reagents, with good resolution between pCA and CHD, symmetry peak of the compound and short run time. HPlC-UV analyses were performed using a Dionex? Summit liquid chromatograph (Dionex Corp, Sunnyvale, CA, USA). Chromatographic separations were carried out on a luna? 150 mm×3 mm i.d. column packed with 3 μm CN (cyano) particles (Phenomenex?), guarded by an on-line filter. Mobile phase consist of methanol:water with sodium chl.r.de with 0.02% of formic acid (55:45). Wavelengths for pCA and for CHD are 238 and 255 nm respectively. Influence of methanol and of sodium chl.r.de content in the eluant has been studied. linearity of CHD is very good, from 0.5 up to 21.2 μg/l while linearity of pCA is in the range of 0.05 to 10 μg/l with correlation coefficients above 0.999. resolution between the components is above 4, asymmetry is about 1.3 and 1.7 for pCA and CHD respectively and the run time is less than 5 minutes. This method has been applied to CHD solution of different medical devices. No interference has been reported, and the analysis of direct injection of solution, without any treatment is achieved in less than five *** conclusion, we present a validated method for dosage of CHD and its major impurity pCA, known to be carcinogen, available into medical products or medicinal device for in-vitro diagnostic.

关键词： Chl.r.exidine Chl.r.aniline HPlC

Comparison of Molecul.r.Properties (Stabilities, reactivity and Interaction) of Manzamenones and Two Antimal.r.al Drugs (Quinine and Artemisinin) Using Mixed Method Calculations (ONIOM) and DFT (B3lYP)

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Computational Chemistry 2022年第1期10卷 1-18页

作者： Atse Adepo jacques Kone Soleymane Diomande Sékou Bamba El-Hadji Sawaliho laboratoire de Constitution et de réaction de la matière de l’UFr SSMT Université Félix Houphouë t Boigny C&#244 te d’Ivoire UFr Agriculture Ressources Halieutiques et Agro-industrie Université de San Pedro C&#244 te d’Ivoire

Mal.r.a is a real public health problem. It’s one of the pathologies that mobilize the scientific community. resistance to existing treatments is the basis for the search for new treatments. Some molecules such as Manzamenones have shown important antimal.r.al properties. These molecules belong to the family of atypical fatty acid derivatives. This work presents the relative stabilities, some reactivity properties and the privileged sites of interaction by hydrogen bond of fourteen Manzamenones and two antimal.r.al drugs: quinine and Artemisinin. These analyses were performed using quantum chemical calculations. We employed the two-layer ONIOM calculation method;namely ONIOM (B3lYP/6-311++G (d, p): AM1) for the fourteen Manzamenones. The geometries of the two antimal.r.als are calculated at B3lYP/6-311++G (d, p). The electrostatic potential (ESP) calculation of all molecules is done at the B3lYP/6-31++G (d, p) level. The formation processes of the molecules are discussed from the thermodynamic quantities we have calculated. The relative stabilities, the energies of the frontier orbitals, the energy gaps, the dipole moment, etc., are evaluated and discussed. The electrostatic potential at the molecul.r.surface has been used to identify the sites favorable to the formation of hydrogen bonds.

关键词： Manzamenone Antimal.r.al Drug Quantum Chemistry reactivity Electrostatic Potential

Which method of distal pancreatectomy is cost-effective among open,laparoscopic,or robotic surgery?

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Hepatobiliary Surgery and Nutrition 2018年第5期7卷 345-352页

作者： Maylis rodriguez riccardo Memeo Piera leon Fabrizio Panaro Stylianos Tzedakis Ornella Perotto Sharmini Varatharajah Nicola de’Angelis Pietro riva Didier Mutter Francis Navarro jacques Marescaux Patrick Pessaux General Digestiveand Endocrine SurgeryNouvel Hopital CivilStrasbourgFrance Institut de recherche Contre les Cancers de l’Appareil Digestif(IrCAD)/research Institute against Digestive Cancer StrasbourgFrance Institut Hospitalo-Universitaire(IHU) Institute for Minimally Invasive Hybrid Image-Guided SurgeryUniversite de StrasbourgStrasbourgFrance Department of Digestive Surgery Hopital Saint-EloiMontpellierFrance

Background: The aim of this study was to analyze the clinical and economic impact of robotic distal pancreatectomy, laparoscopic distal pancreatectomy, and open distal pancreatectomy. Methods: All consecutive patients who underwent distal pancreatic resection for benign and malignant diseases between January 2012 and December 2015 were prospectively included. Cost analysis was performed;all charges from patient admission to discharge were considered. results: There were 21 robotic (rDP), 25 laparoscopic (lDP), and 43 open (ODP) procedures. Operative time was longer in the rDP group (rDP =345 minutes, lDP =306 min, ODP =251 min, P=0.01). Blood loss was higher in the ODP group (rDP =192 ml, lDP =356 ml, ODP =573 ml, P=0.0002). Spleen preservation was more frequent in the rDP group (rDP =66.6%, lDP =61.9%, ODP =9.3%, P=0.001). The rate of patients with Clavien-Dindo > grade III was higher in the ODP group (rDP =0%, lDP =12%, ODP =23%, P=0.01), especially for non-surgical complications, which were more frequent in the ODP group (rDP =9.5%, lDP =24%, ODP =41.8%, P=0.02). length of hospital stay was increased in the ODP group (ODP =19 days, lDP =13 days, rDP =11 days, P=0.007). The total cost of the procedure, including the surgical procedure and postoperative course was higher in the ODP group (ODP =30,929 Euros, lDP=22,150 Euros, rDP =21,219 Euros, P=0.02). Conclusions: Cost-effective results of rDP seem to be simil.r.to lDP with some better short-term outcomes.

关键词： robotic distal pancreatectomy cost-effective laparoscopic

Space and Temporal Distribution Analysis of Interictal Spike in Epilepsy

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Journal of life Sciences 2012年第8期6卷 840-847页

作者： Mamadou lamine Ndiaye Jean-jacques Montois Abel Kinie Papa Alioune Sarr Ndiaye laboratoire Traitement du Signal et de l 'Image INSERM U 642 Rennes 35000 France Centre International de Formation et de recherche en Energie Solaire CIFRES ESP-UCAD BP 5085 Dakar Senegal

Stereo-electroencephalography （SEEG） is the main investigation method for pre-surgical evaluation of patients suffering from drug-resistant partial epilepsy. SEEG signals reflect two types of paroxysmal activity： ictal activity and interictal activity or interictal spikes （IS）. The relationship between IS and ictal activity is an essential and recurrent question in epiletology. In this paper, we present a distributed and parallel architecture for space and temporal distribution analysis of IS, based on a distributed and collaborative methodology. The proposed approach exploits the SEEG data using vector analysis of the corresponding signals among multi-agents system. The objective is to present a new method to analyze and classify IS during wakefulness （W）, light sleep （lS） and deep sleep （DS） stages. Temporal and spatial.r.lationships between IS and seizure onset zone are compared during wakefulness, light sleep and deep sleep. results show that space and temporal distribution for real data are not random but correlated.

关键词： Epilepsy sleep stage stereo-electroencephalography (SEEG) interictal spike signal processing multi-agent system.

Editorial note for the geodesy and geodynamics journal special issue contemporary research in geodynamics and earth tides-Selection from the 19th international symposium on geodynamics and earth tides,2021,Wuhan,China

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Geodesy and Geodynamics 2023年第1期14卷 1-3页

作者： Heping Sun Carla Braitenberg Wei Feng Jean-Paul Boy S everine rosat Chengli Huang Olivier Francis Cheinway Hwang jacques Hinderer State Key laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyCASWuhan 430077PR China University of Trieste Department of Mathematics and GeosciencesVia Weiss 1Trieste 34100Italy School of Geospatial Engineering and Science Sun Yat-sen UniversityZhuhai 519082PR China Institut de Physique du Globe de Strasbourg UMR 7516Universitede Strasbourg/EOSTCNRS5 rue DescartesStrasbourg 67084France Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030PR China University of luxembourg(Ul) L-1359Luxembourg National Chiao Tung University Taiwan 86PR China

This volume aims at providing a platform for sharing valuable topics discussed at the 19th International Symposium on Geodynamics and Earth Tides,23-26 June 2021,Wuhan,*** complete overview of all nineteen Symposia is... 详细信息

关键词： China tides Earth

Urine versus brushed samples in human papillomavirus screening： study in both genders

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Asian Journal of Andrology 2007年第5期9卷 705-710页

作者： Kathleen D＇Hauwers Christophe Depuydt John-Paul Bogers Michel Stalpaert Annie Vereecken Jean-jacques Wyndaele Wiebren Tjalma Departments of Urology University Hospital Antwerp Wilrijkstraat 10 Antwerp B-2650 Belgium Department of Urology University Medical Centre Nijmegen St Radboud Geert Grooteplein 10 Internal Route 6596500 HB Nijmegen the Netherlands AMl Algemeen Medisch Labo Desguinlei 88 2018 Antwerpen Belgium Departments of Pathology University Hospital Antwerp Wilrijkstraat 10 Antwerp B-2650 Belgium Departments of Gynecology University Hospital Antwerp Wilrijkstraat 10 Antwerp B-2650 Belgium

Aim： To investigate whether urine is a good medium for screening and whether there is a correlation between the amount of extracted DNA and human papillomavirus （HPV）-positivity. Methods： In the present study, 30 first-voided urine （FVU） specimens and 20 urethroglandul.r.swabs using cervex-brushes from male partners of HPV-positive patients, and 31 FVU specimens and 100 liquid-based cervix cytology leftovers sampled with cervix-brushes from HPV-positive women were examined for the presence of β-globin. Oncogenic HPV were detected using type-specific PCr. results： β-globin was found in all the brushed samples, whereas it was found in only 68.9% of the FVU specimens. HPV-PCr was positive in 60.0% of the male brushes, in 29% of the female brushes and in 0% of the male FVU specimens. DNA concentration was, respectively, 0.9998 ng/μl, 37.0598 ng/μl and 0.0207 ng/μl. Conclusion： Urine is not a good tool for HPV detection, probably because the low DNA concentration reflects a low amount of collected cells. β-globin is measurable in FVU by real time quantitative PCr, but the DNA concentration is lower compared to brush sampling for both genders. β-globin-positivity of urethral and cervical swabs is 100%, showing a higher mean concentration of DNA, leading to a higher detection rate of HPV. This is the first article linking DNA- concentration to the presence of HPV.

关键词： DNA human papillomavirus men polymerase chain reaction screening urine