1
|
Zhou M, Zhou R, Jiang P, Liang H, Zhou Y, Chen H, Wang B, Chen S, Tu W, Yang Y. Preparation of a novel clay loaded with Fe (VI) for degradation of cefazolin: performance, pathway, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:46259-46272. [PMID: 35167022 DOI: 10.1007/s11356-022-18636-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 01/08/2022] [Indexed: 06/14/2023]
Abstract
Cephalosporin antibiotics, a group of widely prescribed antibiotics, are frequently detected in wastewater effluent and in the natural aquatic environment. Materials have been sought to effectively degrade the antibiotics. In this study, a novel high-iron clay was prepared with potassium ferrate and montmorillonite via a strong alkaline in situ synthesis method. Degradation of cefazolin sodium (CFZ) by this novel Fe (VI)-clay was investigated. The optimal conditions for the degradation of CFZ were determined using a single factor experiment and response surface optimization method. We found that 89.84% removal efficiency was obtained in 137 min when pH value was 5.16 and Fe (VI)-clay dosage was 0.79 g. The CFZ degradation mechanism was studied by computations on the Frontier Electron Density (FED) in combination with spectroscopic and mass spectroscopic analysis. The spectroscopic characteristics of the products at different stages showed that the oxidation decomposition reaction occurred during the degradation of CFZ by Fe (VI)-clay. Furthermore, FED calculation combined with GC-MS results showed that the degradation pathways of CFZ by the Fe (VI)-clay was mainly the cleavage of β-lactam, thiadiazole, tetrazole, and dihydrothiazine rings.
Collapse
Affiliation(s)
- Mingluo Zhou
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- College of Resource and Environmental Engineering, Yibin University, Yibin, Sichuan, 644007, People's Republic of China
| | - Riyu Zhou
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- College of Resource and Environmental Engineering, Yibin University, Yibin, Sichuan, 644007, People's Republic of China
| | - Peng Jiang
- International Department, Chengdu Shude High School, Chengdu, Sichuan, 610066, People's Republic of China
| | - Huili Liang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- Low-Cost Wastewater Treatment Technology International Sci-Tech Cooperation Base, Sichuan Province, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
| | - Yi Zhou
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- Low-Cost Wastewater Treatment Technology International Sci-Tech Cooperation Base, Sichuan Province, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
| | - Haiyan Chen
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
| | - Bin Wang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China.
- Low-Cost Wastewater Treatment Technology International Sci-Tech Cooperation Base, Sichuan Province, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China.
| | - Shu Chen
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- Low-Cost Wastewater Treatment Technology International Sci-Tech Cooperation Base, Sichuan Province, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
| | - Weiguo Tu
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- Sichuan Provincial Academy of Natural Resource Sciences, Chengdu, Sichuan, 610015, People's Republic of China
| | - Yuankun Yang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
- Low-Cost Wastewater Treatment Technology International Sci-Tech Cooperation Base, Sichuan Province, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, People's Republic of China
| |
Collapse
|
2
|
Lou W, Zou K, Yu Z, Qin S, Wang K, Che B. Cefazolin sodium pentahydrate combined with vacuum sealing drainage in the treatment of open fracture complicated with soft tissue injury. Rev Assoc Med Bras (1992) 2020; 66:430-436. [PMID: 32578775 DOI: 10.1590/1806-9282.66.4.430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 11/26/2019] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE To investigate the clinical efficacy of cefazolin sodium pentahydrate combined with vacuum sealing drainage (VSD) in the treatment of open fracture complicated with soft tissue injury. METHODS Sixty-three patients with open fracture complicated with soft tissue injury were divided into observation (n = 33) and control (n = 30) groups. After surgical reduction, fixation, and repair of the fractures, the control group was treated with VSD for 10 days, and the observation group was treated with cefazolin sodium pentahydrate based on VSD for 10 days. The infection control time was recorded. After treatment, the pain of patients was evaluated. Before and after treatment, the serum levels of C-reactive protein (CRP), interleukin (IL)-6, IL-8, tumor necrosis factor α (TNF-α), cortisol, epinephrine, norepinephrine, and glucose were detected. After 6 months of treatment, the total effective rate of the treatment was evaluated. RESULTS The infection control time and Visual Analogue Scale score after treatment in the observation group were significantly lower than in the control group, respectively (P < 0.05). After the treatment, the serum levels of CRP, IL-6, IL-8, TNF-α, cortisol, epinephrine, norepinephrine, and glucose in each group were significantly lower than before the treatment (P < 0.05), and each index in observation was significantly lower than in the control group (P < 0.05). CONCLUSIONS In the treatment of open fractures complicated with soft tissue injury, cefazolin sodium pentahydrate combined with VSD can effectively reduce inflammation and stress, thus improving the treatment efficacy.
Collapse
Affiliation(s)
- Wenjie Lou
- . Department of Orthopedics, General Hospital of the Yangtze River Shipping and Wuhan Brain Hospital, Wuhan 430010, China
| | - Kai Zou
- . Department of Orthopedics, General Hospital of the Yangtze River Shipping and Wuhan Brain Hospital, Wuhan 430010, China
| | - Zhongbin Yu
- . Department of Orthopedics, General Hospital of the Yangtze River Shipping and Wuhan Brain Hospital, Wuhan 430010, China
| | - Song Qin
- . Department of Orthopedics, General Hospital of the Yangtze River Shipping and Wuhan Brain Hospital, Wuhan 430010, China
| | - Kai Wang
- . Department of Orthopedics, General Hospital of the Yangtze River Shipping and Wuhan Brain Hospital, Wuhan 430010, China
| | - Biao Che
- . Department of Orthopedics, General Hospital of the Yangtze River Shipping and Wuhan Brain Hospital, Wuhan 430010, China
| |
Collapse
|
3
|
Qi SY, Tian Y, Zou WB, Hu CQ. Characterization of Solid-State Drug Polymorphs and Real-Time Evaluation of Crystallization Process Consistency by Near-Infrared Spectroscopy. Front Chem 2018; 6:506. [PMID: 30406084 PMCID: PMC6204365 DOI: 10.3389/fchem.2018.00506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/03/2018] [Indexed: 11/13/2022] Open
Abstract
Herein, we aimed to develop a strategy for evaluating the consistency of pharmaceutically important crystallization processes in real time, focusing on two typical cases of polymorphism. Theoretical analysis using a combination of 13C solid-state nuclear magnetic resonance spectroscopy with other polymorphism analysis techniques identified a number of marker signals, the changes of which revealed the presence of two or more structural orientations (lattices and/or molecular conformations) in both cefazolin sodium pentahydrate (α-CEZ-Na) and cephathiamidine (CETD). The proportions of these forms were shown to be batch-dependent and were defined as critical quality attributes (CQAs) to evaluate process consistency. Subsequently, real-time analysis by chemometrics-assisted near-infrared spectroscopy (NIR) was used to obtain useful information corresponding to CQAs. The pretreated spectra of representative samples were transformed by first derivative and vector normalization methods and used to calculate standard deviations at each wavelength and thus detect significant differences. As a result, vibrational responses of H2O, CH3, and CH2 moieties (at 5,280, 4,431, and 4,339 cm-1, respectively) were shown to be sensitive to the CQAs of α-CEZ-Na, which allowed us to establish a highly accurate discrimination model. Moreover, signals of H2O, CONH, and COOH moieties (at 5,211, 5,284, and 5,369 cm-1, respectively) played the same role in the case of CETD, as confirmed by theoretical results. Thus, we established a technique for the rapid evaluation of crystallization process consistency and deepened our understanding of crystallization behavior by using NIR in combination with polymorphism analysis techniques.
Collapse
Affiliation(s)
- Shu-Ye Qi
- National Institutes for Food and Drug Control, Beijing, China.,State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Ye Tian
- National Institutes for Food and Drug Control, Beijing, China
| | - Wen-Bo Zou
- National Institutes for Food and Drug Control, Beijing, China
| | - Chang-Qin Hu
- National Institutes for Food and Drug Control, Beijing, China
| |
Collapse
|