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Song J, Wang Y, Niu Y, Hui B, Wu H. Synthesis and characterization of pH-responsive sodium alginate/humic acid composite hydrogels for sustained drug release of l-ascorbic acid. Int J Biol Macromol 2024; 280:135777. [PMID: 39304043 DOI: 10.1016/j.ijbiomac.2024.135777] [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: 03/24/2024] [Revised: 09/08/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
Addressing the challenges of poor biocompatibility and degradability of artificial drug carriers and poor stability of natural monomer gels in the current pharmaceutical market, this study utilized green natural sodium alginate (SA) and humic acid (HA) as raw materials. SA/HA-Ca2+ hydrogel spheres were prepared using Ca2+ as a crosslinking agent and loaded with l-ascorbic acid (L-AA), and the drug-retardation study was conducted using the droplet method. Various analysis techniques confirmed the formation of a three-dimensional network structure through coordination between HA, SA, and Ca2+, resulting in hydrogel spheres with good thermal stability. Meanwhile, the drug-loading rate, swelling, and in vitro drug release of SA/HA-Ca2+ gel spheres were investigated. Results showed that the hydrogel spheres exhibited strong pH responsiveness and satisfactory pore structure favorable for the loading of L-AA. The solubility of the SA/HA-Ca2+ hydrogel in buffer solutions at pH = 1.4 and 7.4 was 1.7315 and 5.1235 g/g, respectively, while the swelling kinetics followed a second-order swelling kinetic equation; the maximum release of L-AA was 23.67 % and 82.64 %. The release profiles of L-AA from different drug-loaded gels conformed to Langmuir's quasi-primary and quasi-secondary kinetic models. In conclusion, this study provides a theoretical basis for achieving slow drug release using SA/HA-Ca2+.
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Affiliation(s)
- Jie Song
- Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Youqian Wang
- Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Yuhua Niu
- Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Baoli Hui
- Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Haodi Wu
- Shaanxi University of Science & Technology, Xi'an 710021, China
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Alam MT, Mujtaba MA, Hussain A, Ali A, Imran M, Barkat MA, Abdel-Gawad SA. Solid-Phase Extraction (SPE) Technique to Quantify Cefdinir in Human Plasma Using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS). J Chromatogr Sci 2022; 61:366-374. [PMID: 35817401 DOI: 10.1093/chromsci/bmac054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 05/06/2022] [Accepted: 06/10/2022] [Indexed: 11/14/2022]
Abstract
A biosensitive analysis method development and validation was performed for accurate and rapid quantification of cefdinir (CDR) in human plasma by a liquid chromatography-tandem mass spectrometry technique coupled with electrospray ionization. Analysis was carried out using a C18 column with a flow rate of 1.0 mL/min and operating temperature of 30.0 ± 1°C. The drug was eluted by optimizing the m/z ratios of 396.20 → 227.20 and 428.17 → 241.10, for cefdinir and IS (internal standard), respectively. The intraday precision (%CV) for Cefdinir ranged from 2.8% and 6.7% as lower limit of quantification of quality control (LLOQ QC) and higher level of quantification of quality control (HQC QC), respectively, whereas these value were found to be as 3.0% and 5.6% for LLOQ and HQC, respectively after interday precision. Moreover, accuracy ranged from 107.70% (HQC QC) to 95.5% (LLOQ QC). The extraction mean recovery was found to be 83.91 ± 6.0% for cefdinir and 76.7 ± 6.23% for IS. The drug was stable throughout the analysis period. It was possible to analyze several plasma samples every day since each sample took <2.5 min to run. The method demonstrated successful quantification of CDR in human plasma, followed by pharmacokinetic profiles that were simple, accurate, sensitive and cost-effective.
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Affiliation(s)
- Md Tauquir Alam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha 91911, Saudi Arabia
| | - Md Ali Mujtaba
- Department of Pharmaceutics, Faculty of Pharmacy, Northern Border University, Rafha 91911, Saudi Arabia
| | - Afzal Hussain
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abuzer Ali
- Department of Pharmacognosy, College of Pharmacy, Taif University, P. O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohd Imran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha 91911, Saudi Arabia
| | - Md Abul Barkat
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha 91911, Saudi Arabia.,Department of Pharmaceutics, College of Pharmacy, University of Hafr Al-Batin, Al Jamiah, Hafr Al Batin 39524, Saudi Arabia
| | - Sherif A Abdel-Gawad
- Pharmaceutical Chemistry Department, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia.,Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo ET-11562, Egypt
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Martínez-Ortega A, Herrera A, Salmerón-García A, Cabeza J, Cuadros-Rodríguez L, Navas N. Validated reverse phase HPLC diode array method for the quantification of intact bevacizumab, infliximab and trastuzumab for long-term stability study. Int J Biol Macromol 2018; 116:993-1003. [DOI: 10.1016/j.ijbiomac.2018.05.142] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 05/15/2018] [Accepted: 05/21/2018] [Indexed: 10/16/2022]
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