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Pillararene-based supramolecular systems for theranostics and bioapplications

Science China Chemistry 2021年第5期64卷 688-700页

作者： Huangtianzhi Zhu Qi Li Laila E.Khalil-Cruz niveen m.khashab Guocan Yu Feihe Huang State Key Laboratory of Chemical Engineering Key Laboratory of Excited-State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhou 310027China Smart Hybrid materials Laboratory(SHms) Advanced Membranes and Porous Materials CenterKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001China

As an emerging type of important macrocycles for supramolecular chemistry,pillararenes and their derivatives have been widely studied and applied in numerous fields,which intensively promotes the development of chemistry,materials science and ***-based theranostic systems are of special interest in the biological and medical areas as they have shown very promising *** to easy preparation,reliable guest affinity,good biocompatibility and stability,pillararenes are frequently used to construct functional *** one hand,pillararenes can either be used individually or form diversiform self-assemblies such as micelles,nanoparticles and vesicles to increase water solubility and biocompatibility of *** the other hand,it is promising to modify solid materials like framework materials,silica nanoparticles and graphene oxides with pillararene derivatives to enhance their functions and *** this review,we summarize recent endeavors of pillararene-based supramolecular systems with theranostics and other biological applications comprising drug delivery/chemotherapy,photodynamic/photothermal therapy,antimicrobials,bioimaging,*** introducing several typical examples,the design principles,preparation strategies,identifications and bio-applications of these pillararene-based supramolecular systems are *** challenges and directions of this field are also outlined.

关键词： pillararenes self-assembly theranostics drug delivery supra-amphiphiles

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Flexible and biocompatible high-performance solid-state micro-battery for implantable orthodontic system

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npj Flexible Electronics 2017年第1期1卷 70-77页

作者： Arwa T.Kutbee Rabab R.Bahabry Kholod O.Alamoudi mohamed T.Ghoneim marlon D.Cordero Amani S.Almuslem Abdurrahman Gumus Elhadj m.Diallo Joanna m.Nassar Aftab m.Hussain niveen m.khashab muhammad m.Hussain Integrated Nanotechnology Lab and Integrated Disruptive Electronic Applications(IDEA)Lab Material Science and EngineeringPhysical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia khashab Research Group Chemical SciencePhysical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Integrated Nanotechnology Lab and Integrated Disruptive Electronic Applications(IDEA)Lab Electrical EngineeringComputer Electrical and Mathematical Sciences and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Integrated Nanotechnology Lab and Integrated Disruptive Electronic Applications(IDEA)Lab Mechanical EngineeringPhysical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia KAUST Nanofabrication Core Lab King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

To augment the quality of our life,fully compliant personalized advanced health-care electronic system is *** of the major requirements to implement such systems is a physically flexible high-performance biocompatible energy storage(battery).However,the status-quo options do not match all of these attributes simultaneously and we also lack in an effective integration strategy to integrate them in complex architecture such as orthodontic domain in human *** we show,a physically complaint lithium-ion micro-battery(236μg)with an unprecedented volumetric energy(the ratio of energy to device geometrical size)of 200 mWh/cm^(3) after 120 cycles of continuous *** results of 90%viability test confirmed the battery’s *** also show seamless integration of the developed battery in an optoelectronic system embedded in a threedimensional printed smart dental *** foresee the resultant orthodontic system as a personalized advanced health-care application,which could serve in faster bone regeneration and enhanced enamel health-care protection and subsequently reducing the overall health-care cost.

关键词： battery system performance

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Ligation-assisted endoscopic mucosal resection of gastric heterotopic pancreas

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World Journal of Gastroenterology 2009年第22期15卷 2805-2808页

作者： mouen A khashab Oscar W Cummings John m DeWitt Division of Gastroenterology and Hepatology Department of MedicineIndiana University School of Medicine Department of Pathology Indiana University School of Medicine

Heterotopic pancreas is a congenital anomaly characterized by ectopic pancreatic *** of heterotopic pancreas may include expectant observation,endoscopic resection or *** aim of this report was to describe the technique of ligation-assisted endoscopic mucosal resection(EmR) for resection of heterotopic pancreas of the *** patients(both female,mean age 32 years) were referred for management of gastric subepithelial *** ultrasound in both disclosed small hypoechoic masses in the mucosa and *** ligation-assisted EmR was performed in both cases without *** from the resected tumors revealed heterotopic pancreas arising from the *** were free of pancreatic ***-assisted EmR is technically feasible and may be considered for the endoscopic management of heterotopic pancreas.

关键词： Endoscopic mucosal resection Endoscopic ultrasound Heterotopic pancreas

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Kinetic spectrophotometric method for determination of amlodipine besylate in its pharmaceutical tablets

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Journal of Pharmaceutical Analysis 2012年第5期2卷 334-341页

作者： Ashraf m.mahmoud Hanaa m.Abdel-Wadood niveen A.mohamed Department of Pharmaceutical Analytical Chemistry Faculty of PharmacyAssiut UniversityAssiut 71526Egypt

A simple and sensitive kinetic spectrophotometric method has been developed and validated for determination of amlodipine besylate （AmL）. The method was based on the condensation reaction of AmL with 7-chloro-4-nitro-2,1,3-benzoxadiazole in an alkaline buffer （pH 8.6） producing a highly colored product. The color development was monitored spectrophometrically at the maximum absorption λmax 470 nm. The factors affecting the reaction were studied and the conditions were optimized. The stoichiometry of the reaction was determined, and the reaction pathway was postulated. moreover, both the activation energy and the specific rate constant （at 70 ℃） of the reaction were found to be 6.74 kcal mole-1 and 3.58 s -1, respectively. The initial rate and fixed time methods were utilized for constructing the calibration graphs lbr the determination of AmL concentration. Under the optimum reaction conditions, the limits of detection and quantification were 0.35 and 1.05 ug/mL, respectively. The precision of the method was satisfactory; the relative standard deviations were 0.85-1.76%. The proposed method was successfully applied to the analysis of AmL in its pure form and tablets with good accuracy; the recovery percentages ranged from 99.55 ± 1.69% to 100.65 ±1.48%. The results were compared with that of the reported method.

关键词： Amlodepine besylate 7-chloro-4-nitro-2,1,3-benzoxadiazole Kinetic analysis Spectrophotometry

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Spectrofluorimetric method for determination of some angiotensin II receptor antagonists

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Journal of Pharmaceutical Analysis 2012年第1期2卷 12-18页

作者： Salwa R. El-Shaboury Samiha A. Hussein niveen A. mohamed mohamed m. El-Sutohy Department of Pharmaceutical Analytical Chemistry Faculty of Pharmacy Assiut University Department of Pharmaceutical Analytical Chemistry Faculty of Pharmacy Al-Azhar University

A simple, rapid, accurate and highly sensitive spectrofluorimetric method has been developed for determination of some angiotensin II receptor antagonists (AIIRA’s), namely Losartan potassium (Los-K), Irbesartan (Irb), Valsartan (Val) and Candesartan cilexetil (Cand) in pure forms as well as in their pharmaceutical dosage forms. All the variables affecting the relative fluorescence intensity (RFI) were studied and optimized. Under the optimum conditions, linear relationships with good correlation coefflcients (0.9982–0.9991) were obtained over the concentration range from 0.006 mg/mL to 1.7 mg/mL. Good accuracy and precision were successfully obtained for the analysis of tablets containing each drug alone or combined with hydrochlorothiazide (HCTZ) without interferences from the co-formulated HCTZ or the additives commonly present in tablets.

关键词： Angiotensin II receptor antagonists Spectrofluorimetry Determination

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