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Bayındır S, Aydoğan C, Denizli A. Preparation of chiral monoliths with new modulation of the monolith surface chemistry for the enantioseparation of chiral drugs by nano-liquid chromatography. J Chromatogr A 2024; 1713:464573. [PMID: 38101302 DOI: 10.1016/j.chroma.2023.464573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
Here, we report the preparation and application of two new chiral monoliths for the enantioseparation of chiral drugs in nano-LC. Using 3‑chloro-2-hydroxypropylmethacrylate (HPMA-Cl, 2) as a precursor monomer, two different chiral monomers namely, Nα-Boc-Lys-HPMA (3A) and Nα-Fmoc-Lys-HPMA (3B) were synthesized and used for the preparation of chiral polymer monoliths. The first monolithic column (referred to as monolith I) was prepared by an in-situ polymerization of Nα-Boc-Lys-HPMA as the chiral monomer and ethylene dimethacrylate while the second monolithic column (referred to as monolith II) was prepared by an in-situ polymerization of Nα-Fmoc-Lys-HPMA as the chiral monomer and ethylene dimethacrylate as the crosslinker. Methanol and 1-propanol were used as the porogenic solvents. The prepared chiral monoliths were investigated for the enantioseparation of chiral drugs, including β-blockers (e.g., atenolol, propranolol, metoprolol) and anti-inflammatory drugs (e.g., ketoprofen, ibuprofen, flurbiprofen, naproxen, etodolac). The enantioseparation could be achieved via the formation of π-π interactions on the aromate-rich and aromate-poor chiral molecules while enantioseparation mechanism of chiral drugs included mostly π-π interactions and hydrogen bonding. Monolith II showed better enantioselectivity than Monolith I and the resolution values up to 2.12 were successfully achieved.
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Affiliation(s)
- Sinan Bayındır
- Department of Chemistry, Bingöl University, Bingöl, Türkiye
| | - Cemil Aydoğan
- Department of Chemistry, Bingöl University, Bingöl, Türkiye; Food Analysis and Research Laboratory, Bingöl University, Bingöl, Türkiye; Department of Food Engineering, Bingöl University, Bingöl, Türkiye.
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Türkiye
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2
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Fouad A, Adly FG, Soltan MK, Ghanem A. Lipase as a Chiral Selector Immobilised on Carboxylated Single-Walled Carbon Nanotubes and Encapsulated in the Organic Polymer Monolithic Capillary for Nano-High Performance Liquid Chromatography Enantioseparation of Racemic Pharmaceuticals. Molecules 2023; 28:6663. [PMID: 37764439 PMCID: PMC10534468 DOI: 10.3390/molecules28186663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Herein, we report the preparation of lipase immobilised on single-walled carbon nanotubes (SWCNTs) as an enantioselector for capillary monolithic columns and their application in the chiral separation of racemic pharmaceuticals. The columns were prepared through the encapsulation of functionalised SWCNTs (c-SWCNTs) within an organic monolithic polymer, followed by the immobilisation of lipase over the obtained monolith, over a three-day (L1) and five-day (L2) period. The prepared columns were tested for the enantioselective nano-HPLC separation of 50 racemic drugs. A suitable resolution was achieved for 25 drugs using nano-RP-HPLC conditions for both the L1 and L2 capillaries, while no specific resolution was detected under normal-phase HPLC conditions. The developed c-SWCNT-lipase-based polymeric monolithic capillaries are a promising expansion for separating pharmaceutical enantiomers' using nano-HPLC.
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Affiliation(s)
- Ali Fouad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Assiut 71524, Egypt;
| | - Frady G. Adly
- Complementary & Over the Counter Medicines Branch, Medicines Regulation Division, Therapeutic Goods Administration, Australian Department of Health and Aged Care, Canberra, ACT 2609, Australia;
| | - Moustafa K. Soltan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
- Oman College of Health Sciences, Ministry of Health, Muscat 132, Oman
| | - Ashraf Ghanem
- Chirality Program, Faculty of Science and Technology, University of Canberra, Canberra, ACT 2601, Australia
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3
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Daneshvar Tarigh G. Enantioseparation/Recognition based on nano techniques/materials. J Sep Sci 2023:e2201065. [PMID: 37043692 DOI: 10.1002/jssc.202201065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/15/2023] [Accepted: 03/18/2023] [Indexed: 04/14/2023]
Abstract
Enantiomers show different behaviors in interaction with the chiral environment. Due to their identical chemical structure and their wide application in various industries, such as agriculture, medicine, pesticide, food, and so forth, their separation is of great importance. Today, the term "nano" is frequently encountered in all fields. Technology and measuring devices are moving towards miniaturization, and the usage of nanomaterials in all sectors is expanding substantially. Given that scientists have recently attempted to apply miniaturized techniques known as nano-liquid chromatography/capillary-liquid chromatography, which were originally accomplished in 1988, as well as the widespread usage of nanomaterials for chiral resolution (back in 1989), this comprehensive study was developed. Searching the terms "nano" and "enantiomer separation" on scientific websites such as Scopus, Google Scholar, and Web of Science yields articles that either use miniaturized instruments or apply nanomaterials as chiral selectors with a variety of chemical and electrochemical detection techniques, which are discussed in this article.
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Affiliation(s)
- Ghazale Daneshvar Tarigh
- Department of Analytical Chemistry, University College of Science, University of Tehran, Tehran, Iran
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Chiral Monolithic Silica-Based HPLC Columns for Enantiomeric Separation and Determination: Functionalization of Chiral Selector and Recognition of Selector-Selectand Interaction. Molecules 2021; 26:molecules26175241. [PMID: 34500675 PMCID: PMC8434329 DOI: 10.3390/molecules26175241] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/25/2022] Open
Abstract
This review draws attention to the use of chiral monolithic silica HPLC columns for the enantiomeric separation and determination of chiral compounds. Properties and advantages of monolithic silica HPLC columns are also highlighted in comparison to conventional particle-packed, fused-core, and sub-2-µm HPLC columns. Nano-LC capillary monolithic silica columns as well as polymeric-based and hybrid-based monolithic columns are also demonstrated to show good enantioresolution abilities. Methods for introducing the chiral selector into the monolithic silica column in the form of mobile phase additive, by encapsulation and surface coating, or by covalent functionalization are described. The application of molecular modeling methods to elucidate the selector–selectand interaction is discussed. An application for enantiomeric impurity determination is also considered.
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5
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Li Z, Li Q, Fu Y, Hu C, Liu Y, Li W, Chen Z. A lipase-based chiral stationary phase for direct chiral separation in capillary electrochromatography. Talanta 2021; 233:122488. [PMID: 34215110 DOI: 10.1016/j.talanta.2021.122488] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/28/2022]
Abstract
Candida antarctica lipase B (CALB) is a natural biocatalyst with an intrinsically strong chiral environment and a high degree of enantio-selectivity, which is widely used in the separation of racemates. Here, a facile and efficient covalent immobilization approach was utilized to immobilize CALB onto the capillary inner wall as a novel chiral stationary phase to explore and broaden its application in the direct chiral separation by electrochromatography. The obtained CALB immobilized capillary column was characterized by scanning electron microscopy (SEM), fluorescence imaging and Fourier transform infrared spectroscopy (FT-IR). The enantioseparation property of the CALB immobilized capillary column was confirmed by direct chiral separation of several pairs of monoamine neurotransmitter enantiomers in OT-CEC mode. Outstanding enantioseparation performance for three types of monoamine neurotransmitter enantiomers including epinephrine, norepinephrine and phenylephrine was obtained by the CALB immobilized column. Thanks to the effectiveness of covalent bonding method and the intrinsic stability of CALB, the prepared CALB immobilized capillary columns were quite steady and reproducible. The relative standard deviations for retention times of the enantiomers were as follows: for intra-day (n = 5) runs (≤0.25%), inter-day (n = 3) runs (≤0.72%) and between-columns (n = 3) (≤2.42%). After 90 consecutive runs in CEC mode, the CALB immobilized column still exhibited desirable enantionseparation performance.
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Affiliation(s)
- Zhentao Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Qiaoyan Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Yuanyuan Fu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Changjun Hu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Yikun Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Wen Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing, 100080, China.
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Enantiomeric determination of econazole and sulconazole by electrokinetic chromatography using hydroxypropyl-β-cyclodextrin combined with ionic liquids based on L-lysine and L-glutamic acid. J Chromatogr A 2020; 1621:461085. [PMID: 32376018 DOI: 10.1016/j.chroma.2020.461085] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 12/18/2022]
Abstract
Two analytical methodologies based on the combined use of hydroxypropyl-β-cyclodextrin and two different amino acid-based chiral ionic liquids (tetrabutylammonium-L-lysine or tetrabutylammonium-L-glutamic acid) in electrokinetic chromatography were developed in this work to perform the enantioselective determination of econazole and sulconazole in pharmaceutical formulations. The influence of different experimental variables such as buffer concentration, applied voltage, nature and concentration of the ionic liquid, temperature and injection time, on the enantiomeric separation was investigated. The combination of hydroxypropyl-β-cyclodextrin and tetrabutylammonium-L-lysine under the optimized conditions enabled to achieve the enantiomeric determination of both drugs with high enantiomeric resolution (3.5 for econazole and 2.4 for sulconazole). The analytical characteristics of the developed methodologies were evaluated in terms of linearity, precision, LOD, LOQ and recovery showing good performance for the determination of both drugs which were successfully quantitated in pharmaceutical formulations. This work reports the first analytical methodology enabling the enantiomeric determination of sulconazole in pharmaceutical formulations.
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8
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Recent advances in preparation and applications of monolithic chiral stationary phases. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115774] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Zhou ZL, Jia XB, Sun MF, Zhu YL, Qiao CM, Zhang BP, Zhao LP, Yang Q, Cui C, Chen X, Shen YQ. Neuroprotection of Fasting Mimicking Diet on MPTP-Induced Parkinson's Disease Mice via Gut Microbiota and Metabolites. Neurotherapeutics 2019; 16:741-760. [PMID: 30815845 PMCID: PMC6694382 DOI: 10.1007/s13311-019-00719-2] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Parkinson's disease (PD) is strongly associated with life style, especially dietary habits, which have gained attention as disease modifiers. Here, we report a fasting mimicking diet (FMD), fasting 3 days followed by 4 days of refeeding for three 1-week cycles, which accelerated the retention of motor function and attenuated the loss of dopaminergic neurons in the substantia nigra in 1-methyl-4-phenyl-1,2,3,6-tetrathydropyridine (MPTP)-induced PD mice. Levels of brain-derived neurotrophic factor (BDNF), known to promote the survival of dopaminergic neurons, were increased in PD mice after FMD, suggesting an involvement of BDNF in FMD-mediated neuroprotection. Furthermore, FMD decreased the number of glial cells as well as the release of TNF-α and IL-1β in PD mice, showing that FMD also inhibited neuro-inflammation. 16S and 18S rRNA sequencing of fecal microbiota showed that FMD treatment modulated the shifts in gut microbiota composition, including higher abundance of Firmicutes, Tenericutes, and Opisthokonta and lower abundance of Proteobacteria at the phylum level in PD mice. Gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry revealed that FMD modulated the MPTP-induced lower propionic acid and isobutyric acid, and higher butyric acid and valeric acid and other metabolites. Transplantation of fecal microbiota, from normal mice with FMD treatment to antibiotic-pretreated PD mice increased dopamine levels in the recipient PD mice, suggesting that gut microbiota contributed to the neuroprotection of FMD for PD. These findings demonstrate that FMD can be a new means of preventing and treating PD through promoting a favorable gut microbiota composition and metabolites.
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Affiliation(s)
- Zhi-Lan Zhou
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Xue-Bing Jia
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Meng-Fei Sun
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Ying-Li Zhu
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Chen-Meng Qiao
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Bo-Ping Zhang
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Li-Ping Zhao
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Qin Yang
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Chun Cui
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Xue Chen
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China
| | - Yan-Qin Shen
- Public Health Research Center at Jiangnan University, Wuxi Medical School, Jiangnan University, Wuxi, 214122, China.
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10
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Fouad A, Ibrahim D, Adly FG, Ghanem A. An insight into chiral monolithic stationary phases for enantioselective high-performance liquid chromatography applications. J Sep Sci 2019; 42:2303-2340. [PMID: 31050176 DOI: 10.1002/jssc.201900159] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/17/2019] [Accepted: 04/17/2019] [Indexed: 02/02/2023]
Abstract
In this review, three main classes of chiral monolithic stationary phases, namely silica-, organic polymer-, and hybrid-based monolithic stationary phases, are covered. Their preparations, applications, and advantages compared with the conventional-packed and open-tubular capillary columns are discussed. A detailed description of the different types and techniques used for the introduction of chiral selectors into the monolithic matrices such as immobilization, functionalization, coating, encapsulation, and bonding. Special emphasis is given to the recent developments of chiral selectors in HPLC monolithic stationary phases during the past 18 years.
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Affiliation(s)
- Ali Fouad
- Chirality Program, School of Science, Faculty of Science and Technology, University of Canberra, ACT, Australia.,Pharmaceutical Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Diana Ibrahim
- Chirality Program, School of Science, Faculty of Science and Technology, University of Canberra, ACT, Australia
| | - Frady G Adly
- Chirality Program, School of Science, Faculty of Science and Technology, University of Canberra, ACT, Australia
| | - Ashraf Ghanem
- Chirality Program, School of Science, Faculty of Science and Technology, University of Canberra, ACT, Australia
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11
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Chen C, Liu W, Hong T. Novel approaches for biomolecule immobilization in microscale systems. Analyst 2019; 144:3912-3924. [DOI: 10.1039/c9an00212j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This manuscript reviews novel approaches applied for biomolecule immobilization in microscale systems.
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Affiliation(s)
- Chuanpin Chen
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
| | - Wenfang Liu
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
| | - Tingting Hong
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
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12
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Aydoğan C, Gökaltun A, Denizli A, El Rassi Z. Biochromatographic applications of polymethacrylate monolithic columns used in electro- and liquid phase-separationsΨ. J LIQ CHROMATOGR R T 2018. [DOI: 10.1080/10826076.2018.1462204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Cemil Aydoğan
- Department of Food Engineering, Bingöl University, Bingöl, Turkey
| | - Aslıhan Gökaltun
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Ziad El Rassi
- Department of Chemistry, Oklahoma State University, Stillwater, OK, USA
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13
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Xu S, Wang Y, Tang Y, Ji Y. A protein-based mixed selector chiral monolithic stationary phase in capillary electrochromatography. NEW J CHEM 2018. [DOI: 10.1039/c8nj02309c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed selector CSP combines the enantioselectivities of both individual proteins, thus expanding their application range practically.
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Affiliation(s)
- Shujuan Xu
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yuying Wang
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yixia Tang
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Yibing Ji
- Department of Analytical Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
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14
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Xu YD, Cui C, Sun MF, Zhu YL, Chu M, Shi YW, Lin SL, Yang XS, Shen YQ. Neuroprotective Effects of Loganin on MPTP-Induced Parkinson's Disease Mice: Neurochemistry, Glial Reaction and Autophagy Studies. J Cell Biochem 2017; 118:3495-3510. [PMID: 28338241 DOI: 10.1002/jcb.26010] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 03/22/2017] [Indexed: 02/05/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disease, involving resting tremor and bradykinesia, for which no recognized therapies or drugs are available to halt or slow progression. In recent years, natural botanic products have been considered relatively safe, with limited side effects, and are expected to become an important source for clinical mediation of PD in the future. Our study focuses on the ability of loganin, a compound derived from fruits of cornus, to mediate neuroprotection in a mouse model of PD. Mice were administered 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) with a dosage of 30 mg/kg daily for 5 days to establish a subacute PD model and treated with loganin. Locomotor activity was assessed by a pole test, then mice were euthanized at 1 and 3 days after the last treatment, and brain tissue was prepared for subsequent assays. Loganin rescued decrease of dopamine levels and tyrosine hydroxylase (TH) expression in the striatum, and shortened total locomotor activity (TLA) time of mice. Furthermore, loganin alleviated microglia and astrocyte activation, and suppressed TNF-α and caspase-3 expression through a c-Abl-p38-NFκB pathway. Loganin also downregulated LC3-II and Drp1 expression, and decreased the level of acidic vesicular organelles (AVOs). Loganin exerts neuroprotective effects on MPTP-induced PD mice by decreasing inflammation, autophagy, and apoptosis, suggesting that loganin could serve as a therapeutic drug to ameliorate PD. J. Cell. Biochem. 118: 3495-3510, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Yi-Da Xu
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
| | - Chun Cui
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
| | - Meng-Fei Sun
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
| | - Ying-Li Zhu
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
| | - Min Chu
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
| | - Yun-Wei Shi
- Medical School of Nantong University, Nantong 226019, China
| | - Stanley Li Lin
- Department of Cell Biology, Shantou University Medical College, Shantou 515041, China
| | | | - Yan-Qin Shen
- Wuxi Medical School, Jiangnan University, Wuxi 214122, China
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Fouad A, Ghanem A. Immobilized Chiral Selectors on Monolithic High-Performance Liquid Chromatography Columns. ADVANCES IN CHROMATOGRAPHY 2017. [DOI: 10.1201/9781315116372-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Hemasa AL, Naumovski N, Maher WA, Ghanem A. Application of Carbon Nanotubes in Chiral and Achiral Separations of Pharmaceuticals, Biologics and Chemicals. NANOMATERIALS 2017; 7:nano7070186. [PMID: 28718832 PMCID: PMC5535252 DOI: 10.3390/nano7070186] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/04/2017] [Accepted: 07/06/2017] [Indexed: 12/23/2022]
Abstract
Carbon nanotubes (CNTs) possess unique mechanical, physical, electrical and absorbability properties coupled with their nanometer dimensional scale that renders them extremely valuable for applications in many fields including nanotechnology and chromatographic separation. The aim of this review is to provide an updated overview about the applications of CNTs in chiral and achiral separations of pharmaceuticals, biologics and chemicals. Chiral single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) have been directly applied for the enantioseparation of pharmaceuticals and biologicals by using them as stationary or pseudostationary phases in chromatographic separation techniques such as high-performance liquid chromatography (HPLC), capillary electrophoresis (CE) and gas chromatography (GC). Achiral MWCNTs have been used for achiral separations as efficient sorbent objects in solid-phase extraction techniques of biochemicals and drugs. Achiral SWCNTs have been applied in achiral separation of biological samples. Achiral SWCNTs and MWCNTs have been also successfully used to separate achiral mixtures of pharmaceuticals and chemicals. Collectively, functionalized CNTs have been indirectly applied in separation science by enhancing the enantioseparation of different chiral selectors whereas non-functionalized CNTs have shown efficient capabilities for chiral separations by using techniques such as encapsulation or immobilization in polymer monolithic columns.
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Affiliation(s)
- Ayman L Hemasa
- Chirality Program, Biomedical Science, University of Canberra, Bruce, Australian Capital Territory (ACT) 2617, Australia.
| | - Nenad Naumovski
- Collaborative Research in Bioactives and Biomarkers Group (CRIBB), University of Canberra, Bruce, Australian Capital Territory (ACT) 2617, Australia.
| | - William A Maher
- Ecochemistry Laboratory, Institute for Applied Ecology, University of Canberra, Bruce, Australian Capital Territory (ACT) 2617, Australia.
| | - Ashraf Ghanem
- Chirality Program, Biomedical Science, University of Canberra, Bruce, Australian Capital Territory (ACT) 2617, Australia.
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17
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Hong T, Yang X, Xu Y, Ji Y. Recent advances in the preparation and application of monolithic capillary columns in separation science. Anal Chim Acta 2016; 931:1-24. [DOI: 10.1016/j.aca.2016.05.013] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 05/07/2016] [Accepted: 05/09/2016] [Indexed: 12/12/2022]
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18
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Ghanem A, Adly FG, Sokerik Y, Antwi NY, Shenashen MA, El-Safty SA. Trimethyl-β-cyclodextrin-encapsulated monolithic capillary columns: Preparation, characterization and chiral nano-LC application. Talanta 2016; 169:239-248. [PMID: 28411817 DOI: 10.1016/j.talanta.2016.06.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/13/2016] [Accepted: 06/14/2016] [Indexed: 01/19/2023]
Abstract
Trimethylated-β-cyclodextrin (TM-β-CD) was encapsulated within several polymer monolithic capillary columns for reversed-phase chiral nano-liquid chromatography (nano-LC). The monolithic phases were prepared using the one-pot in situ copolymerization of ethylene glycol dimethacrylate (EDMA), glycidyl methacrylate (GMA) monomers and 1-propanol, 1,4-butanediol as progenic solvents in presence of TM-β-CD solution within fused silica capillaries (150µm I.D.). The obtained chiral monolithic stationery phases were characterized by scanning electron microscopy (SEM), N2 adsorption/desorption isotherms, wide angle x-ray diffraction (WAXRD), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The materials characterization demonstrated that monolithic phases with higher concentration of TM-β-CD have relatively larger surface area, smaller pore size and larger total pore volume compared to those with lower concentration TM-β-CD. The prepared columns were tested for their enantioseparation efficiency of a range of racemic pharmaceuticals. The screening results demonstrated the potential of functionalizing polymer monolithic stationary phases with TM-β-CD using the in situ encapsulation approach.
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Affiliation(s)
- Ashraf Ghanem
- Chirality Program, University of Canberra, ACT 2601, Australia. http://www.chiralitygroup.com
| | - Frady G Adly
- Chirality Program, University of Canberra, ACT 2601, Australia
| | - Yasser Sokerik
- Chirality Program, University of Canberra, ACT 2601, Australia
| | - Nana Yaa Antwi
- Chirality Program, University of Canberra, ACT 2601, Australia
| | - Mohamed A Shenashen
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
| | - Sherif A El-Safty
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
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Ahmed M, Yajadda MMA, Han ZJ, Su D, Wang G, Ostrikov K(K, Ghanem A. Single-walled carbon nanotube-based polymer monoliths for the enantioselective nano-liquid chromatographic separation of racemic pharmaceuticals. J Chromatogr A 2014; 1360:100-9. [DOI: 10.1016/j.chroma.2014.07.052] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 07/07/2014] [Accepted: 07/16/2014] [Indexed: 11/29/2022]
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