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Khan D, Badhan R, Kirby DJ, Bryson S, Shah M, Mohammed AR. Virtual Clinical Trials Guided Design of an Age-Appropriate Formulation and Dosing Strategy of Nifedipine for Paediatric Use. Pharmaceutics 2023; 15:pharmaceutics15020556. [PMID: 36839878 PMCID: PMC9961156 DOI: 10.3390/pharmaceutics15020556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/13/2023] [Accepted: 01/28/2023] [Indexed: 02/11/2023] Open
Abstract
The rapid onset of action of nifedipine causes a precipitous reduction in blood pressure leading to adverse effects associated with reflex sympathetic nervous system (SNS) activation, including tachycardia and worsening myocardial and cerebrovascular ischemia. As a result, short acting nifedipine preparations are not recommended. However, importantly, there are no modified release preparations of nifedipine authorised for paediatric use, and hence a paucity of clinical studies reporting pharmacokinetics data in paediatrics. Pharmacokinetic parameters may differ significantly between children and adults due to anatomical and physiological differences, often resulting in sub therapeutic and/or toxic plasma concentrations of medication. However, in the field of paediatric pharmacokinetics, the use of pharmacokinetic modelling, particularly physiological-based pharmacokinetics (PBPK), has revolutionised the ability to extrapolate drug pharmacokinetics across age groups, allowing for pragmatic determination of paediatric plasma concentrations to support drug licensing and clinical dosing. In order to pragmatically assess the translation of resultant dissolution profiles to the paediatric populations, virtual clinical trials simulations were conducted. In the context of formulation development, the use of PBPK modelling allowed the determination of optimised formulations that achieved plasma concentrations within the target therapeutic window throughout the dosing strategy. A 5 mg sustained release mini-tablet was successfully developed with the duration of release extending over 24 h and an informed optimised dosing strategy of 450 µg/kg twice daily. The resulting formulation provides flexible dosing opportunities, improves patient adherence by reducing frequent administration burden and enhances patient safety profiles by maintaining efficacious levels of consistent drug plasma levels over a sustained period of time.
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Affiliation(s)
- Dilawar Khan
- Aston Pharmacy School, College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK
| | - Raj Badhan
- Aston Pharmacy School, College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK
| | - Daniel J. Kirby
- Aston Pharmacy School, College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK
| | - Simon Bryson
- Proveca Ltd., No. 1 Spinningfields, Quay Street, Manchester M3 3JE, UK
| | - Maryam Shah
- Proveca Ltd., No. 1 Spinningfields, Quay Street, Manchester M3 3JE, UK
| | - Afzal Rahman Mohammed
- Aston Pharmacy School, College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK
- Correspondence:
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2
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Souza de Araujo GR, Mendonça da Cruz Macieira G, Xavier de Oliveira D, Santos Matos S, Nery Dos Santos Q, Otubo L, Antunes de Souza Araújo A, Cavalcante Duarte M, Moreira Lira AA, de Souza Nunes R, Vitorino Sarmento VH. Microemulsions formed by PPG-5-CETETH-20 at low concentrations for transdermal delivery of nifedipine: Structural and in vitro study. Colloids Surf B Biointerfaces 2022; 214:112474. [PMID: 35338963 DOI: 10.1016/j.colsurfb.2022.112474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/13/2022] [Accepted: 03/19/2022] [Indexed: 12/26/2022]
Abstract
Nifedipine is a potent anti-hypertensive, which is poorly orally bioavailable on account of first-pass metabolism, short half-life, and low water solubility. This study aimed to develop a microemulsified system with low surfactant concentration and to evaluate the influence of microemulsion (ME) phase behavior on skin permeation of nifedipine, as drug model. Thereafter, MEs were obtained using PPG-5-CETETH-20, oleic acid, and phosphate buffer at pH 5.0. The selected MEs were isotropic, with droplet diameters less than 10 nm, polydispersity index < 0.25, and pH between 5.0 and 5.2. MEs presented low viscosity and Newtonian behavior. SAXS results confirmed bicontinuous and oil-in-water (o/w) MEs formation. The presence of the drug promoted only very slight modifications in the ME structure. The MEs presented ability to deliver nifedipine via the transdermal route when in comparison with the control. Nevertheless, the skin permeated and retained amounts from the o/w and bicontinuous formulations did not differ significantly. The ATR-FTIR demonstrated that both formulations promoted fluidization and disorganization of lipids and increased the drug diffusion and partition coefficients in the skin. In conclusion, PPG-5-CETETH-20 MEs obtained proved to be effective skin permeation enhancers, acting by rising the coefficients of partition and diffusion of the nifedipine in the skin.
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Affiliation(s)
| | - Givalda Mendonça da Cruz Macieira
- Department of Chemistry, Federal University of Sergipe, Av. Vereador Olimpio Grande, Sítio Porto, Itabaiana, s/n 49506-036 SE, Brazil
| | - Dayane Xavier de Oliveira
- Department of Chemistry, Federal University of Sergipe, Av. Vereador Olimpio Grande, Sítio Porto, Itabaiana, s/n 49506-036 SE, Brazil
| | - Saulo Santos Matos
- Department of Pharmacy, Federal University of Sergipe, Av. Marechal Rondon, Jd. Rosa Elze, São Cristóvão, s/n 49100-000 SE, Brazil
| | - Quesia Nery Dos Santos
- Department of Pharmacy, Federal University of Sergipe, Av. Marechal Rondon, Jd. Rosa Elze, São Cristóvão, s/n 49100-000 SE, Brazil
| | - Larissa Otubo
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN, Cidade Universitária, Av. Prof. Lineu Prestes, 2242, São Paulo, CEP 05508-000 SP, Brazil
| | - Adriano Antunes de Souza Araújo
- Department of Pharmacy, Federal University of Sergipe, Av. Marechal Rondon, Jd. Rosa Elze, São Cristóvão, s/n 49100-000 SE, Brazil
| | - Marcelo Cavalcante Duarte
- Department of Pharmacy, Federal University of Sergipe, Av. Marechal Rondon, Jd. Rosa Elze, São Cristóvão, s/n 49100-000 SE, Brazil
| | - Ana Amélia Moreira Lira
- Department of Pharmacy, Federal University of Sergipe, Av. Marechal Rondon, Jd. Rosa Elze, São Cristóvão, s/n 49100-000 SE, Brazil
| | - Rogéria de Souza Nunes
- Department of Pharmacy, Federal University of Sergipe, Av. Marechal Rondon, Jd. Rosa Elze, São Cristóvão, s/n 49100-000 SE, Brazil
| | - Victor Hugo Vitorino Sarmento
- Department of Chemistry, Federal University of Sergipe, Av. Vereador Olimpio Grande, Sítio Porto, Itabaiana, s/n 49506-036 SE, Brazil.
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I2/PhI(OAc)2-assisted oxidative C-H amination protocols toward metal-free pragmatic synthesis of pyrrolo[2,3-b]indoles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Stress degradation study on entrectinib and characterization of its degradation products using HRMS and NMR. J Pharm Biomed Anal 2022; 208:114459. [PMID: 34768159 DOI: 10.1016/j.jpba.2021.114459] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 12/31/2022]
Abstract
Entrectinib is a potent inhibitor of receptor tyrosine kinases and anaplastic lymphoma kinase. It is designated as an orphan drug. There exists no report of comprehensive degradation profiling of the drug in the literature. Therefore, the present study focused on establishment of its stress degradation chemistry under hydrolytic (acidic, alkaline, neutral), oxidative (H2O2), photolytic and thermal conditions. For the purpose, the stressed solutions were subjected to HPLC studies on a C8 column by employing a gradient elution method, in which acetonitrile and 10 mM ammonium acetate were used as the mobile phase components. The results showed that entrectinib was labile to alkaline, H2O2, and photoneutral conditions in the solution state. The drug proved to be stable under acidic, solid-state photolytic, and thermal conditions. A total of sixteen degradation products were formed, which were characterized with the help of high resolution mass spectrometry, and in one case additional help was taken of 1D and -2D NMR data. The knowledge of the structures of the degradation products helped in establishment of degradation pathway of the drug and the involved mechanisms. Also, the toxicity profile of the drug and its degradation products was predicted using ADMET Predictor™ software, which indicated mutagenic potential of atleast five degradation products.
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5
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Dong W, Yang C, Zhang L, Su Q, Zou X, Xu W, Gao X, Xie K, Wang W. Highly efficient UV/H2O2 technology for the removal of nifedipine antibiotics: Kinetics, co-existing anions and degradation pathways. PLoS One 2021; 16:e0258483. [PMID: 34710109 PMCID: PMC8553136 DOI: 10.1371/journal.pone.0258483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022] Open
Abstract
This study investigates the degradation of nifedipine (NIF) by using a novel and highly efficient ultraviolet light combined with hydrogen peroxide (UV/H2O2). The degradation rate and degradation kinetics of NIF first increased and then remained constant as the H2O2 dose increased, and the quasi-percolation threshold was an H2O2 dose of 0.378 mmol/L. An increase in the initial pH and divalent anions (SO42- and CO32-) resulted in a linear decrease of NIF (the R2 of the initial pH, SO42- and CO32- was 0.6884, 0.9939 and 0.8589, respectively). The effect of monovalent anions was complex; Cl- and NO3- had opposite effects: low Cl- or high NO3- promoted degradation, and high Cl- or low NO3- inhibited the degradation of NIF. The degradation rate and kinetics constant of NIF via UV/H2O2 were 99.94% and 1.45569 min-1, respectively, and the NIF concentration = 5 mg/L, pH = 7, the H2O2 dose = 0.52 mmol/L, T = 20 ℃ and the reaction time = 5 min. The ·OH was the primary key reactive oxygen species (ROS) and ·O2- was the secondary key ROS. There were 11 intermediate products (P345, P329, P329-2, P315, P301, P274, P271, P241, P200, P181 and P158) and 2 degradation pathways (dehydrogenation of NIF → P345 → P274 and dehydration of NIF → P329 → P315).
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Affiliation(s)
- Wenping Dong
- Shandong Academy of Environmental Science Co., Ltd., Jinan, China
- Shandong Huankeyuan Environmental Engineering Co., Ltd., Jinan, China
| | - Chuanxi Yang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, China
| | - Lingli Zhang
- Hi-tech Science Park Branch of Weihai Municipal Bureau of Ecological Environment, Weihai, China
| | - Qiang Su
- Shandong Academy of Environmental Science Co., Ltd., Jinan, China
- Shandong Huankeyuan Environmental Engineering Co., Ltd., Jinan, China
| | - Xiaofeng Zou
- Shandong Academy of Environmental Science Co., Ltd., Jinan, China
- Shandong Huankeyuan Environmental Engineering Co., Ltd., Jinan, China
| | - Wenfeng Xu
- Shandong Think-eee Environmental Technology Co., Ltd., Jinan, China
| | - Xingang Gao
- Qingdao Jiaming Measurement and Control Technology Co., Ltd., Qingdao, China
| | - Kang Xie
- School of Civil Engineering and Architecture, University of Jinan, Jinan, China
| | - Weiliang Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, China
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6
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Ladumor MK, Paudel A, Modhave D, Sharma S, Balhara A, Singh DK, Ramalingam M, Shah R, Pavankumarraju S, Kurmi M, Mariappan TT, Bhutani H, Prasad B. A Tribute to Professor Saranjit Singh - A Critical Thinker, Innovator, Mentor, and Educator. J Pharm Sci 2021; 111:1224-1231. [PMID: 34699842 DOI: 10.1016/j.xphs.2021.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 11/26/2022]
Abstract
This commentary presents contributions and accomplishments of Professor Saranjit Singh, National Institute of Pharmaceutical Education and Research (NIPER), SAS Nagar, India, to pharmaceutical research and education. Prof. Singh completed his successful tenure in October 2021. Over his 40+ years of illustrious academic career, he trained 147 Masters and 15 PhD students in the fields of drug stability testing, degradation chemistry, impurity and metabolite characterization, and advanced analytical technologies. He has published ∼250 research articles, reviews, editorials, patent, book, and book chapters, and received numerous awards, including the Professor M.L. Khorana Memorial Lecture Award from the Indian Pharmaceutical Association (IPA) and the Outstanding Analyst and Eminent Analyst awards from the Indian Drug Manufacturers' Association (IDMA). This commentary highlights Prof. Singh's inspiring personal and renowned professional journey, including early life, education, career, accomplishments, as well as his services to academia, industry, and regulatory. By sharing the contributions and accomplishments of Prof. Singh, we strongly believe that his story will inspire the next generation of scientists to continue his legacy to advance the field.
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Affiliation(s)
- Mayur K Ladumor
- Department of Pharmaceutics, University of Washington, Seattle, WA
| | - Amrit Paudel
- Institute of Process and Particle Engineering, Graz University of Technology, Inffeldgasse 13, 8010 Graz, Austria
| | | | - Sheena Sharma
- Department of Pharmaceutical Sciences, Washington State University, Spokane, WA
| | - Ankit Balhara
- Department of Pharmaceutics, University of Washington, Seattle, WA
| | - Dilip K Singh
- Sandoz Development Center, Hyderabad, Telangana, India
| | | | - Ravi Shah
- National Institute of Pharmaceutical Education and Research, Ahmedabad, Gujarat, India
| | | | - Moolchand Kurmi
- Biocon Bristol Myers Squibb R&D Centre (BBRC), Synegene International Limited, Bangalore 560099, India
| | - T Thanga Mariappan
- Biocon Bristol Myers Squibb R&D Centre (BBRC), Synegene International Limited, Bangalore 560099, India; Bristol Myers Squibb (BMS), Bangalore, India.
| | - Hemant Bhutani
- Novartis Healthcare Private Limited, Hyderabad, Telangana, India.
| | - Bhagwat Prasad
- Department of Pharmaceutical Sciences, Washington State University, Spokane, WA.
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7
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Thakkar R, Davis DA, Williams RO, Maniruzzaman M. Selective Laser Sintering of a Photosensitive Drug: Impact of Processing and Formulation Parameters on Degradation, Solid State, and Quality of 3D-Printed Dosage Forms. Mol Pharm 2021; 18:3894-3908. [PMID: 34529431 DOI: 10.1021/acs.molpharmaceut.1c00557] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This research study utilized a light-sensitive drug, nifedipine (NFD), to understand the impact of processing parameters and formulation composition on drug degradation, crystallinity, and quality attributes (dimensions, hardness, disintegration time) of selective laser sintering (SLS)-based three-dimensional (3D)-printed dosage forms. Visible lasers with a wavelength around 455 nm are one of the laser sources used for selective laser sintering (SLS) processes, and some drugs such as nifedipine tend to absorb radiation at varying intensities around this wavelength. This phenomenon may lead to chemical degradation and solid-state transformation, which was assessed for nifedipine in formulations with varying amounts of vinyl pyrrolidone-vinyl acetate copolymer (Kollidon VA 64) and potassium aluminum silicate-based pearlescent pigment (Candurin) processed under different SLS conditions in the presented work. After preliminary screening, Candurin, surface temperature (ST), and laser speed (LS) were identified as the significant independent variables. Further, using the identified independent variables, a 17-run, randomized, Box-Behnken design was developed to understand the correlation trends and quantify the impact on degradation (%), crystallinity, and quality attributes (dimensions, hardness, disintegration time) employing qualitative and quantitative analytical tools. The design of experiments (DoEs) and statistical analysis observed that LS and Candurin (wt %) had a strong negative correlation on drug degradation, hardness, and weight, whereas ST had a strong positive correlation with drug degradation, amorphous conversion, and hardness of the 3D-printed dosage form. From this study, it can be concluded that formulation and processing parameters have a critical impact on stability and performance; hence, these parameters should be evaluated and optimized before exposing light-sensitive drugs to the SLS processes.
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Affiliation(s)
- Rishi Thakkar
- Division of Molecular Pharmaceutics and Drug Delivery, Department of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Daniel A Davis
- Division of Molecular Pharmaceutics and Drug Delivery, Department of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Robert O Williams
- Division of Molecular Pharmaceutics and Drug Delivery, Department of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Mohammed Maniruzzaman
- Division of Molecular Pharmaceutics and Drug Delivery, Department of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
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8
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Dhiman V, Balhara A, Singh S, Tiwari S, Gananadhamu S, Talluri MVNK. Characterization of stress degradation products of nintedanib by UPLC, UHPLC-Q-TOF/MS/MS and NMR: Evidence of a degradation product with a structure alert for mutagenicity. J Pharm Biomed Anal 2021; 199:114037. [PMID: 33836462 DOI: 10.1016/j.jpba.2021.114037] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 12/17/2022]
Abstract
Nintedanib is an anti-cancer drug used for the treatment of idiopathic pulmonary fibrosis and non-small cell lung cancer. The purpose of this study was to explore its degradation chemistry under various stress conditions recommended in ICH guidelines Q1A R(2). The drug was subjected to hydrolytic, photolytic, thermal and oxidative (H2O2, AIBN, FeCl3 and FeSO4) stress conditions. The degradation products formed in stressed solutions were successfully separated on an ACQUITY UPLC CSH C18 (2.1 × 100 mm, 1.7 μm) column, using a gradient UPLC-PDA method, developed with acetonitrile:methanol (90:10) and 0.1 % formic acid (pH 3.0) as the mobile phase. The drug proved to be labile to acidic, neutral and alkaline hydrolytic, and H2O2/AIBN oxidative conditions. It was stable to photolytic and thermal stress conditions, and even in oxidative reaction solutions containing FeCl3 or FeSO4. Additionally, the drug exhibited instability when its powder with added sodium bicarbonate was stored at 40 °C/75 % RH for 3 months. In total, nine degradation products (DPs 1-9) were formed. To characterize them, a comprehensive mass fragmentation pathway of the drug was first established using UHPLC-Q-TOF/MS/MS data. Similarly, the mass studies were then carried out on the stressed samples using the developed UPLC method. All the degradation products were primarily characterized through comparison of their mass fragmentation profiles with that of the drug. To confirm the structure in one case (DP 3), additional nuclear magnetic resonance (NMR) studies were carried out on the isolated product. Subsequently, mechanisms for their formation were laid down. A significant finding was the formation of a degradation product upon acid hydrolysis having a free aromatic amine moiety, which is considered as a structural alert for mutagenicity. Furthermore, the physicochemical and ADMET properties of the drug and its degradation products were predicted using ADMET predictor™ software.
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Affiliation(s)
- Vivek Dhiman
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), IDPL R&D Campus, Balanagar, Hyderabad, 500037, Telangana, India
| | - Ankit Balhara
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar, 160062, Punjab, India
| | - Saranjit Singh
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar, 160062, Punjab, India
| | - Shristy Tiwari
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), IDPL R&D Campus, Balanagar, Hyderabad, 500037, Telangana, India
| | - Samanthula Gananadhamu
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), IDPL R&D Campus, Balanagar, Hyderabad, 500037, Telangana, India
| | - M V N Kumar Talluri
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), IDPL R&D Campus, Balanagar, Hyderabad, 500037, Telangana, India.
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9
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Wirzal MDH, Sathishkumar P, Alshahrani LA, Yusoff ARM, Gu FL, Qureshi MS, Khalid M, Khokhar FM. Nifedipine degradation by an electro-oxidation process using titanium-based RuO2–IrO2–TiO2 mixed metal oxide electrode. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01243-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Shelke M, Deshpande SS, Sharma S. Quinquennial Review of Progress in Degradation Studies and Impurity Profiling: An Instrumental Perspective Statistics. Crit Rev Anal Chem 2019; 50:226-253. [DOI: 10.1080/10408347.2019.1615863] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Madhav Shelke
- School of Pharmacy & Technology Management, SVKM's NMIMS, Shirpur, Maharashtra, India
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11
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Zhou N, Li T, Ai L, Guo C, Zhang J, Fu S, Wang Q. Identification of forced degradation products of lacosamide by LC-QQLIT-MS and LC-IT/TOF-MS. ACTA CHROMATOGR 2019. [DOI: 10.1556/1326.2018.00279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Na Zhou
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Tao Li
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, P. R. China
- Department of Pharmacy, Hebei eye hospital, Xingtai, 054000, P. R. China
| | - Lianfeng Ai
- Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang, 050051, P. R. China
| | - Chunhai Guo
- Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang, 050051, P. R. China
| | - Juan Zhang
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Shan Fu
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Qiao Wang
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, P. R. China
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12
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Sun H, Liu S, Gao X, Xiong Z, He Z, Zhao L. Study on degradation kinetics of epalrestat in aqueous solutions and characterization of its major degradation products under stress degradation conditions by UHPLC-PDA-MS/MS. J Pharm Anal 2018; 9:423-430. [PMID: 31890342 PMCID: PMC6931074 DOI: 10.1016/j.jpha.2018.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 07/23/2018] [Accepted: 08/09/2018] [Indexed: 02/05/2023] Open
Abstract
Drug stability is closely related to drug safety and needs to be considered in the process of drug production, package and storage. To investigate the stability of epalrestat, a carboxylic acid derivative, a reversed-phase high-performance liquid chromatography (RP-HPLC) method was developed in this study and applied to analyzing the degradation kinetics of epalrestat in aqueous solutions in various conditions, such as different pH, temperatures, ionic strengths, oxidation and irradiation. The calibration curve was A = 1.6 × 105 C-1.3 × 103 (r = 0.999) with the liner range of 0.5-24 μg/mL, the intra-day and inter-day precision was less than 2.0%, as was the repeatibility. The average accuracy for different concentrations was more than 98.5%, indicating that perfect recoveries were achieved. Degradation kinetic parameters such as degradation rate constants (k), activation energy (Ea) and shelf life (t 0.9 ) under different conditions were calculated and discussed. The results indicated that the degradation behavior of epalrestat was pH-dependent and the stability of epalrestat decreased with the rised irradiation and ionic strength; however, it was more stable in neutral and alkaline conditions as well as lower temperatures. The results showed that the degradation kinetics of epalrestat followed first-order reaction kinetics. Furthermore, the degradation products of epalrestat under stress conditions were identified by UHPLC-PDA-MS/MS, with seven degradation products being detected and four of them being tentatively identified.
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Affiliation(s)
- Hong Sun
- Shanxi Biosample Analysis Center, Shanxi Health Vocational College, No. 100, Wenjin Street, Yuci District, Jinzhong 030619, PR China
| | - Suyan Liu
- School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, PR China
| | - Xun Gao
- School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, PR China
| | - Zhili Xiong
- School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, PR China
| | - Zhonggui He
- School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, PR China
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, PR China
- Corresponding author.
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13
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Yang M, Zhang F, Hou Y, Su Y, Guo Y. Screening of illegally adulterated 1,4-dihydropyridine calcium antagonists in traditional Chinese medicines by a high-performance liquid chromatography electrospray ionization in-source collision-induced dissociation triple quadrupole mass spectrometric method. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:672-676. [PMID: 29420846 DOI: 10.1002/rcm.8076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/29/2018] [Accepted: 01/29/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Minghua Yang
- Center for Chinese Medicine Therapy and Systems Biology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Shanghai Pudong Institute for Food and Drug Control, Shanghai, 201203, China
| | - Fang Zhang
- National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yuting Hou
- Guanghua Integrative Medicine Hospital, Shanghai, 200052, China
| | - Yue Su
- Center for Chinese Medicine Therapy and Systems Biology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yinlong Guo
- National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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Critical review of reports on impurity and degradation product profiling in the last decade. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.09.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Shen WB, Sun Q, Li L, Liu X, Zhou B, Yan JZ, Lu X, Ye LW. Divergent synthesis of N-heterocycles via controllable cyclization of azido-diynes catalyzed by copper and gold. Nat Commun 2017; 8:1748. [PMID: 29170497 PMCID: PMC5701061 DOI: 10.1038/s41467-017-01853-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 10/19/2017] [Indexed: 12/01/2022] Open
Abstract
Gold-catalyzed intermolecular alkyne oxidation by an N–O bond oxidant has proven to be a powerful method in organic synthesis during the past decade, because this approach would enable readily available alkynes as precursors in generating α-oxo gold carbenes. Among those, gold-catalyzed oxidative cyclization of dialkynes has received particular attention as this chemistry offers great potential to build structurally complex cyclic molecules. However, these alkyne oxidations have been mostly limited to noble metal catalysts, and, to our knowledge, non-noble metal-catalyzed reactions such as diyne oxidations have not been reported. Herein, we disclose a copper-catalyzed oxidative diyne cyclization, allowing the facile synthesis of a wide range of valuable pyrrolo[3,4-c]quinolin-1-ones. Interestingly, by employing the same starting materials, the gold-catalyzed cascade cyclization leads to the divergent formation of synthetically useful pyrrolo[2,3-b]indoles. Furthermore, the proposed mechanistic rationale for these cascade reactions is strongly supported by both control experiments and theoretical calculations. Fused N-heterocycles are structural motifs observed in natural products and bioactive compounds. Here, the authors developed divergent copper- and gold-catalyzed oxidative cyclizations of diynes to two types of tricyclic N-heterocycles and rationalized the product selectivity by theoretical calculations.
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Affiliation(s)
- Wen-Bo Shen
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Qing Sun
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Long Li
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Liu
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Bo Zhou
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Juan-Zhu Yan
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Lu
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Long-Wu Ye
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China.
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Handa T, Jhajra S, Bhagat S, Bharatam P, Chakraborti AK, Singh S. Molecular insight into atypical instability behavior of fixed-dose combination containing amlodipine besylate and losartan potassium. J Pharm Biomed Anal 2017; 136:66-80. [DOI: 10.1016/j.jpba.2016.12.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/20/2016] [Accepted: 12/24/2016] [Indexed: 10/20/2022]
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17
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Liu S, Zong J, Wei Z, Zhang H, Bai L, Liu H, Yan H. Determination of trace macrolide antibiotics in milk with online solid-phase extraction with an ionic-liquid-based monolithic column. J Appl Polym Sci 2016. [DOI: 10.1002/app.43943] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Sha Liu
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
| | - Jianxin Zong
- Yiling Pharmaceutical Company, Limited; Shijiazhuang China
| | - Zhen Wei
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
| | - Hang Zhang
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
| | - Ligai Bai
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - Haiyan Liu
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
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Liu S, Wang C, He S, Bai L, Liu H. On-line SPE Using Ionic Liquid-Based Monolithic Column for the Determination of Antihypertensives in Human Plasma. Chromatographia 2016. [DOI: 10.1007/s10337-016-3045-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Advanced progress of microencapsulation technologies: In vivo and in vitro models for studying oral and transdermal drug deliveries. J Control Release 2014; 178:25-45. [DOI: 10.1016/j.jconrel.2013.12.028] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 12/10/2013] [Accepted: 12/17/2013] [Indexed: 11/20/2022]
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