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Lin HYH, Liang CJ, Yang MY, Chen PL, Wang TM, Chen YH, Shih YH, Liu W, Chiu CC, Chiang CK, Lin CS, Lin HC. Critical roles of tubular mitochondrial ATP synthase dysfunction in maleic acid-induced acute kidney injury. Apoptosis 2024; 29:620-634. [PMID: 38281282 PMCID: PMC11055741 DOI: 10.1007/s10495-023-01897-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2023] [Indexed: 01/30/2024]
Abstract
Maleic acid (MA) induces renal tubular cell dysfunction directed to acute kidney injury (AKI). AKI is an increasing global health burden due to its association with mortality and morbidity. However, targeted therapy for AKI is lacking. Previously, we determined mitochondrial-associated proteins are MA-induced AKI affinity proteins. We hypothesized that mitochondrial dysfunction in tubular epithelial cells plays a critical role in AKI. In vivo and in vitro systems have been used to test this hypothesis. For the in vivo model, C57BL/6 mice were intraperitoneally injected with 400 mg/kg body weight MA. For the in vitro model, HK-2 human proximal tubular epithelial cells were treated with 2 mM or 5 mM MA for 24 h. AKI can be induced by administration of MA. In the mice injected with MA, the levels of blood urea nitrogen (BUN) and creatinine in the sera were significantly increased (p < 0.005). From the pathological analysis, MA-induced AKI aggravated renal tubular injuries, increased kidney injury molecule-1 (KIM-1) expression and caused renal tubular cell apoptosis. At the cellular level, mitochondrial dysfunction was found with increasing mitochondrial reactive oxygen species (ROS) (p < 0.001), uncoupled mitochondrial respiration with decreasing electron transfer system activity (p < 0.001), and decreasing ATP production (p < 0.05). Under transmission electron microscope (TEM) examination, the cristae formation of mitochondria was defective in MA-induced AKI. To unveil the potential target in mitochondria, gene expression analysis revealed a significantly lower level of ATPase6 (p < 0.001). Renal mitochondrial protein levels of ATP subunits 5A1 and 5C1 (p < 0.05) were significantly decreased, as confirmed by protein analysis. Our study demonstrated that dysfunction of mitochondria resulting from altered expression of ATP synthase in renal tubular cells is associated with MA-induced AKI. This finding provides a potential novel target to develop new strategies for better prevention and treatment of MA-induced AKI.
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Affiliation(s)
- Hugo Y-H Lin
- Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan.
| | - Chan-Jung Liang
- Department of Oral Hygiene, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
- Grander Pharmacy, Kaohsiung, Taiwan
| | - Ming-Yu Yang
- College of Medicine, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Phang-Lang Chen
- Department of Biological Chemistry, University of California, Irvine, USA
| | - Tzu-Ming Wang
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Yen-Hua Chen
- School of Medicine, Doctoral Program of Clinical and Experimental Medicine, Institute of Biomedical Sciences, College of Medicine, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Yao-Hsiang Shih
- Department of Anatomy, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan
| | - Wangta Liu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chih-Kang Chiang
- Graduate Institute of Toxicology, National Taiwan University, Taipei, Taiwan
| | - Chang-Shen Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan.
| | - Han-Chen Lin
- Department of Anatomy, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 80756, Taiwan.
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2
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Dash PP, Mohanty P, Behura R, Behera S, Naik S, Mishra M, Sahoo H, Barick AK, Mohapatra P, Sahoo SK, Jali BR. Rapid Colorimetric and Fluorometric Discrimination of Maleic Acid vs. Fumaric Acid and Detection of Maleic Acid in Food Additives. J Fluoresc 2024; 34:1015-1024. [PMID: 37439921 DOI: 10.1007/s10895-023-03330-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 06/27/2023] [Indexed: 07/14/2023]
Abstract
An anthracene thiazole based Schiff base L was synthesized and employed for fluorescence switch-on detection of maleic acid in aqueous DMSO. The non-fluorescent L (10-5 M) showed an instantaneous and selective fluorescence enhancement at 506 nm upon interaction with maleic acid (10-5 M). Other potential carboxylic acids (10-5 M), such as malic acid, citric acid, acetic acid, cinnamic acid, tartaric acid, succinic acid, fumaric acid, oxalic acid and malonic acid failed to alter the chromo-fluorogenic properties of L. Probe L can be employed to detect maleic acid down to 2.74 × 10-6 M. The probe L showed good linearity from 2.97 to 6.87 µM. Analytical utility of L was examined by detecting maleic acid in various food additives and drosophila larvae.
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Affiliation(s)
- Pragyan P Dash
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India
| | - P Mohanty
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India
| | - R Behura
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India
| | - S Behera
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India
| | - S Naik
- Department of Life Science, National Institute of Technology, 769008, Rourkela, India
| | - M Mishra
- Department of Life Science, National Institute of Technology, 769008, Rourkela, India
| | - H Sahoo
- Department of Chemistry, National Institute of Technology, 769008, Rourkela, India
| | - Aruna K Barick
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India
| | - P Mohapatra
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India
| | - Suban K Sahoo
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, 395007, Surat, Gujarat, India
| | - Bigyan R Jali
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur-768018, Odisha, India.
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Fei YC, Cheng Q, Zhang H, Han C, Wang X, Li YF, Li SQ, Zhao XH. Maleic acid and malonic acid reduced the pathogenicity of Sclerotinia sclerotiorum by inhibiting mycelial growth, sclerotia formation and virulence factors. Stress Biol 2023; 3:45. [PMID: 37955738 PMCID: PMC10643788 DOI: 10.1007/s44154-023-00122-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 09/07/2023] [Indexed: 11/14/2023]
Abstract
Sclerotinia sclerotiorum is a necrotrophic plant pathogenic fungus with broad distribution and host range. Bioactive compounds derived from plant extracts have been proven to be effective in controlling S. sclerotiorum. In this study, the mycelial growth of S. sclerotiorum was effectively inhibited by maleic acid, malonic acid, and their combination at a concentration of 2 mg/mL, with respective inhibition rates of 32.5%, 9.98%, and 67.6%. The treatment of detached leaves with the two acids resulted in a decrease in lesion diameters. Interestingly, maleic acid and malonic acid decreased the number of sclerotia while simultaneously increasing their weight. The two acids also disrupted the cell structure of sclerotia, leading to sheet-like electron-thin regions. On a molecular level, maleic acid reduced oxalic acid secretion, upregulated the expression of Ss-Odc2 and downregulated CWDE10, Ss-Bi1 and Ss-Ggt1. Differently, malonic acid downregulated CWDE2 and Ss-Odc1. These findings verified that maleic acid and malonic acid could effectively inhibit S. sclerotiorum, providing promising evidence for the development of an environmentally friendly biocontrol agent.
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Affiliation(s)
- Yu-Chen Fei
- State Key Laboratory of Agricultural Microbiology / College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
- Fujian Universities and Colleges Engineering Research Center of Modern Facility Agriculture, Fuqing, 350300, China
| | - Qin Cheng
- State Key Laboratory of Agricultural Microbiology / College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Huan Zhang
- State Key Laboratory of Agricultural Microbiology / College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chuang Han
- State Key Laboratory of Agricultural Microbiology / College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xu Wang
- Institute of Quality Standard and Monitoring Technology for Agro-Products of Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Yan-Feng Li
- State Key Laboratory of Agricultural Microbiology / College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shi-Qian Li
- Fujian Universities and Colleges Engineering Research Center of Modern Facility Agriculture, Fuqing, 350300, China.
| | - Xiao-Hu Zhao
- State Key Laboratory of Agricultural Microbiology / College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
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Du J, Tian L, Qi M, Zhang C, Di H, Zhi X, Zhu J. Revealing maleic acid role in the preparation of α-hemihydrate gypsum from titanium gypsum through experiments and DFT calculations. Sci Total Environ 2023; 897:166405. [PMID: 37597561 DOI: 10.1016/j.scitotenv.2023.166405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/04/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
Titanium gypsum (TG) is rarely used to produce α-hemihydrate gypsum (α-HH) because of its poor crystallinity and high impurity and moisture contents. Here, a method is proposed to prepare α - HH by adjusting the reaction temperature, CaCl2 solution concentration and maleic acid dosage based on acid leaching and heat-treated TG as raw material. The effect of maleic acid and Fe3+ ions on the preparation of α-HH were systematically analyzed using density functional theory (DFT) and typical materials characterization methods, X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). Under the optimal conditions (CaCl2 concentration of 23 % and reaction temperature of 95 °C), the maleic acid is chemically adsorbed on the crystal surfaces of α-HH, the strongest adsorption is in the (111) surface. Increasing the maleic acid concentration from 0 to 0.15 % decreased the aspect ratio of the α-HH crystals from 8.26 to 0.96, respectively, where the optimal dosage was 0.1 %. The theoretical results proved that the substitution energy of Fe3+ was greater than that of Ca2+, and Fe3+ ions can spontaneously enter the α-HH lattice to replace Ca2+ ions. Furthermore, the adsorption energy of maleic acid on the (111) surface increased after the substitution of Fe3+ to generate a synergistic effect that hinders α-HH growth along the c-axis, resulting in the preferred morphology. The results of this study provide a new method for using waste TG to produce a high-value-added product.
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Affiliation(s)
- Jingwei Du
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Lin Tian
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Manfu Qi
- LB Group Co., Ltd, Jiaozuo 45411, Henan, China
| | - Chen Zhang
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Hongfeng Di
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China
| | - Xiao Zhi
- China National Building Material Group Co., Ltd, Beijing 10000, China.
| | - Jianping Zhu
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, Henan, China.
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Yang JY, Yu QF, Li MF. Freeze-thaw assisted maleic acid pretreatment of eucalyptus to prepare cellulose nanocrystals and degraded lignin. Bioresour Technol 2023:129365. [PMID: 37343804 DOI: 10.1016/j.biortech.2023.129365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/16/2023] [Accepted: 06/17/2023] [Indexed: 06/23/2023]
Abstract
A green and effective method is proposed for the pretreatment of eucalyptus by freeze-thaw assisted maleic acid tactic, wherein the effects of freeze-thaw, maleic acid concentration, reaction time, and temperature on the fractionation were examined. Results showed that under optimal conditions (60% maleic acid, 120 °C, and 2 h), a remarkable removal of 74.5% lignin and 95.2% hemicellulose was achieved after freeze-thaw treatment. The resulting cellulose-rich solid residues were further processed with maleic acid to prepare cellulose nanocrystals, which displayed uniform sized rod-like structures and high crystallinity (62.51%). Moreover, maleic acid pretreatment resulted in lignin with low molecular weight (2110-2530) and excellent homogeneity (PDI ≤ 1.86), while maintaining a relatively intact structure. The lignin had high β-O-4 aryl ether bond contents (≥77.5%) and abundant phenolic hydroxyl contents (2.33-3.63 mmol/g). Overall, the process exhibits notable benefits in effectively separating lignocellulose for high valorization.
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Affiliation(s)
- Jia-Yu Yang
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Qiong-Fen Yu
- Yunnan Provincial Rural Energy Engineering Key Laboratory, Yunnan 650550, China
| | - Ming-Fei Li
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China; Yunnan Provincial Rural Energy Engineering Key Laboratory, Yunnan 650550, China; Engineering Research Center of Forestry Biomass Materials and Energy, Ministry of Education, Beijing Forestry University, Beijing 100083, China.
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6
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Risanto L, Adi DTN, Fajriutami T, Teramura H, Fatriasari W, Hermiati E, Kahar P, Kondo A, Ogino C. Pretreatment with dilute maleic acid enhances the enzymatic digestibility of sugarcane bagasse and oil palm empty fruit bunch fiber. Bioresour Technol 2023; 369:128382. [PMID: 36423754 DOI: 10.1016/j.biortech.2022.128382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/15/2022] [Accepted: 11/19/2022] [Indexed: 06/16/2023]
Abstract
Lignocellulose is resistant to degradation and requires pretreatment before hydrolytic enzymes can release fermentable sugars. Sulfuric acid has been widely used for biomass pretreatment, but high amount of degradation products usually occurred when using this method. To enhance accessibility to cellulose, we studied the performances of several dilute organic acid pretreatments of sugarcane bagasse and oil palm empty fruit bunch fiber. The results revealed that pretreatment with maleic acid yields the highest xylose and glucose release among other organic acids. The effects of concentration, duration of heating and heating temperature were further studied. Dilute maleic acid 1 % (w/w) pretreatment at 180 °C was the key to its viability as a substitute for sulfuric acid. Moreover, maleic acid did not seem to highly promote the formation of either furfural or 5-HMF in the liquid hydrolysate after pretreatment.
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Affiliation(s)
- Lucky Risanto
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jalan Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia; Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Deddy Triyono Nugroho Adi
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jalan Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia; Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Triyani Fajriutami
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jalan Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
| | - Hiroshi Teramura
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Widya Fatriasari
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jalan Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
| | - Euis Hermiati
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jalan Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
| | - Prihardi Kahar
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Akihiko Kondo
- Graduate School of Science, Technology and Innovation, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - Chiaki Ogino
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan.
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Topbaş C, Çınar Ş, Altan B, Şirin DA, Fildişi MA. The effects of different root canal irrigation protocols and artificial aging procedures on the bond strength between dentin and hybrid ceramic posts. BMC Oral Health 2022; 22:590. [PMID: 36494809 PMCID: PMC9733272 DOI: 10.1186/s12903-022-02571-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/08/2022] [Indexed: 12/13/2022] Open
Abstract
The purpose of this study is to investigate the effects of different root canal irrigation protocols applied to the dentin and artificial aging procedures on the micro pushout bond strength (mPBS) between dentin and hybrid ceramic posts. Seventy-five single-rooted mandibular premolar teeth were divided into 5 groups (Gr1-5). 50 of the teeth were used for the mPBS tests (n = 10), whereas 25 were used for the smear layer examinations (n = 5). Post space were prepared and irrigated with different irrigation-protocols in each group. (Gr1:[SS], Gr2:[NaOCl] + SS, Gr3:[EDTA] + NaOCl + SS, Gr4:[MA] + NaOCl + SS, Gr5:[Ch] + NaOCl + SS). Post and core pattern were fabricated with pattern resin and a fiber post, after scanning, the posts were milled with Vita Enamic resin ceramic block, and cemented. After 7 days the roots were sliced at thicknesses of 1 mm; half of them were subjected to mPBS test, while the other half were tested after undergoing mechanical cycling for artificial aging. For data analysis, the Shapiro-Wilk test was utilized to test normal distributions, 3-way analysis of variance was used to compare mPBS, and Tukey's HSD test was conducted for multiple comparisons. SEM analysis was performed for examination of failure modes and smear layer removal. Different root canal irrigation protocols affected mPBS significantly. While Gr4 had the highest mPBS, Gr1 had the lowest. Regarding to different zones, the highest mPBS was in coronal zone, and the lowest one was in the apical zone. The aging procedure also led to a statistically-significant decrease in mPBS. Most frequent failure modes were cohesive failure in dentin and mixed failure. Irrigation with 7%MA (Gr4) showed better performance than 17% EDTA (Gr3) in smear layer removal, especially at the apical zone of the tooth. This is critical for the success of root canal treatment and increased the mPBS to a higher extent in all zones of the tooth.
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Affiliation(s)
- Celalettin Topbaş
- grid.488643.50000 0004 5894 3909Department of Endodontics, Faculty of Dentistry, University of Health Sciences, +905055993249 Uskudar, Istanbul, Turkey
| | - Şevki Çınar
- grid.488643.50000 0004 5894 3909Department of Prosthodontics, Faculty of Dentistry, University of Health Sciences, Istanbul, Turkey
| | - Bike Altan
- grid.488643.50000 0004 5894 3909Department of Prosthodontics, Faculty of Dentistry, University of Health Sciences, Istanbul, Turkey
| | - Dursun Ali Şirin
- grid.488643.50000 0004 5894 3909Department of Endodontics, Faculty of Dentistry, University of Health Sciences, Istanbul, Turkey
| | - Mehmet Ali Fildişi
- grid.411781.a0000 0004 0471 9346Department of Restorative Dentistry, Faculty of Dentistry, Medipol University, Istanbul, Turkey
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Ma S, Chen B, Zeng A, Li Z, Tang X, Sun Y, Lin L, Zeng X. Chemical structure change of lignin extracted from bamboo biomass by maleic acid. Int J Biol Macromol 2022; 221:986-993. [PMID: 36075310 DOI: 10.1016/j.ijbiomac.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 11/18/2022]
Abstract
Maleic acid (MA) is an effective solvent for lignin extraction from raw biomass under mild conditions through acidolysis and hydrophobic interaction. To improve the valorization of lignin, the lignin extracted with MA was subjected to successive organic solvent fractionation to make the narrow Mw and Mn distribution and the homogeneity structure of lignin fragments. After successive organic solvent fractionation, the dispersity index (Đ) of lignin reduced from 2.86 to 1.25, and the purity and homogeneity were greatly improved. The phenolic hydroxyl content of lignin extracted by ethyl acetate was the highest (2.45 mmol/g), and the aliphatic-OH concentration was the lowest (0.65 mmol/g). While the βO4 bonds were partially cleaved, more hydrophobic substrates with CC linkages were recovered by ethyl acetate. Lignin fragments with a variety of main structures and functional groups were obtained effectively with successive fractionation. This method supplied broad prospects for the preparation of lignin and its applications in epoxy resin, rubber, thermoplastic additives and polymer raw materials.
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Affiliation(s)
- Sen Ma
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China
| | - Binglin Chen
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China
| | - Anqi Zeng
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China
| | - Zheng Li
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China.
| | - Xing Tang
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China
| | - Yong Sun
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China
| | - Lu Lin
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China
| | - Xianhai Zeng
- College of Energy, Xiamen University, Xiamen 361102, PR China; Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass, Xiamen Key Laboratory of Clean and High-valued Applications of Biomass, Xiamen University, Xiamen 361102, PR China.
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Roginski AC, Zemniaçak ÂB, Marschner RA, Wajner SM, Ribeiro RT, Wajner M, Amaral AU. Disruption of mitochondrial functions involving mitochondrial permeability transition pore opening caused by maleic acid in rat kidney. J Bioenerg Biomembr 2022; 54:203-213. [PMID: 35902433 DOI: 10.1007/s10863-022-09945-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 07/23/2022] [Indexed: 11/26/2022]
Abstract
Propionic acid (PA) predominantly accumulates in tissues and biological fluids of patients affected by propionic acidemia that may manifest chronic renal failure along development. High urinary excretion of maleic acid (MA) has also been described. Considering that the underlying mechanisms of renal dysfunction in this disorder are poorly known, the present work investigated the effects of PA and MA (1-5 mM) on mitochondrial functions and cellular viability in rat kidney and cultured human embryonic kidney (HEK-293) cells. Mitochondrial membrane potential (∆ψm), NAD(P)H content, swelling and ATP production were measured in rat kidney mitochondrial preparations supported by glutamate or glutamate plus malate, in the presence or absence of Ca2+. MTT reduction and propidium iodide (PI) incorporation were also determined in intact renal cells pre-incubated with MA or PA for 24 h. MA decreased Δψm and NAD(P)H content and induced swelling in Ca2+-loaded mitochondria either respiring with glutamate or glutamate plus malate. Noteworthy, these alterations were fully prevented by cyclosporin A plus ADP, suggesting the involvement of mitochondrial permeability transition (mPT). MA also markedly inhibited ATP synthesis in kidney mitochondria using the same substrates, implying a strong bioenergetics impairment. In contrast, PA only caused milder changes in these parameters. Finally, MA decreased MTT reduction and increased PI incorporation in intact HEK-293 cells, indicating a possible association between mitochondrial dysfunction and cell death in an intact cell system. It is therefore presumed that the MA-induced disruption of mitochondrial functions involving mPT pore opening may be involved in the chronic renal failure occurring in propionic acidemia.
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Affiliation(s)
- Ana Cristina Roginski
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Ângela Beatris Zemniaçak
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Rafael Aguiar Marschner
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Simone Magagnin Wajner
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Rafael Teixeira Ribeiro
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Alexandre Umpierrez Amaral
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, RS, Brazil.
- Departamento de Ciências Biológicas, Universidade Regional Integrada Do Alto Uruguai E das Missões, Avenida Sete de Setembro, 1621, Erechim, RS, CEP 99709-910, Brazil.
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10
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Lian Z, Zhang Q, Xu Y, Zhou X, Jiang K. Biorefinery Cascade Processing for Converting Corncob to Xylooligosaccharides and Glucose by Maleic Acid Pretreatment. Appl Biochem Biotechnol 2022; 194:4946-4958. [PMID: 35674923 DOI: 10.1007/s12010-022-03985-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2022] [Indexed: 01/07/2023]
Abstract
Corncob as an abundant and low-cost waste resource has received increasing attention to produce value-added chemicals, it is rich in xylan and regarded as the most preferable feedstock for preparing high value added xylooligosaccharides. The use of xylooligosaccharides as core products can cut costs and improve the economic efficiency in biorefinery. In this study, maleic acid, as a non-toxic and edible acidic catalyst, was employed to pretreat corncob and produce xylooligosaccharides. Firstly, the response surface methodology experimental procedure was employed to maximize the yield of the xylooligosaccharides; a yield of 52.9% (w/v) was achieved with 0.5% maleic acid (w/v) at 155 °C for 26 min. In addition, maleic acid pretreatment was also beneficial to enhance the enzymatic hydrolysis efficiency, resulting in an enzymatic glucose yield of 85.4% (w/v) with a total of 10% solids loading. Finally, a total of 160 g of xylooligosaccharides and 275 g glucose could be produced from 1000 g corncob starting from the maleic acid pretreatment. Overall, a cascade processing for converting corncob to xylooligosaccharides and glucose by sequential maleic acid pretreatment and enzymatic hydrolysis was successfully designed for the corncob wastes utilization.
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Affiliation(s)
- Zhina Lian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, 210037, Nanjing, People's Republic of China
| | - Qibo Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, 210037, Nanjing, People's Republic of China
| | - Yong Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, 210037, Nanjing, People's Republic of China
| | - Xin Zhou
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, 210037, Nanjing, People's Republic of China.
| | - Kankan Jiang
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, 310053, Hangzhou, People's Republic of China
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11
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Peng L, Lu Z, Zhong L, Jian J, Rong Y, Yang R, Xu Y, Jin C. Enhanced ionic conductivity and interface compatibility of PVDF-LLZTO composite solid electrolytes by interfacial maleic acid modification. J Colloid Interface Sci 2022; 613:368-375. [PMID: 35042034 DOI: 10.1016/j.jcis.2022.01.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/03/2022] [Accepted: 01/05/2022] [Indexed: 10/19/2022]
Abstract
Improving conductivity and optimizing interface contact are two primary targets to promote the development of solid-state electrolytes. Herein, maleic acid (MA) is introduced into normal PVDF-LLZTO(Li6.75La3Zr1.75Ta0.25O12) based composite polymer-ceramic electrolytes (CPEs). Benefiting the self-polymerization of MA, a core-shell structure is spontaneously formed with LLZTO as core and MA nano-film as shell, the MA shell builds a bridge to link LLZTO and PVDF. In addition, carboxyl groups in MA provide extra channels for Li+ transmission. As a proof, the optimized 25MA-75PVDF-LLZTO CPEs demonstrates an enhanced conductivity as high as 1.15 × 10-3 S cm-1 at 30 °C, an extended electrochemical window up to < 5.0 V, a raised Li+ transfer number of 0.596, and an improved compatibility with Li metal anode. The as-prepared Li‖25MA-75PVDF-LLZTO CPEs‖LiFePO4 full cell delivers an initial specific discharge capacity of 170.5 mAh g-1 at 0.2C, a high rate capability up to 1.0C with 138 mAh g-1 and an excellent long-term cycling stability of over 180cycles without capacity attenuation. The work provides a new strategy to optimize solid state lithium batteries by introducing unsaturated small organic molecules.
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Affiliation(s)
- Lin Peng
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Zhengyi Lu
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Lin Zhong
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China; Overseas Chinese Academy of Chiway Suzhou, Suzhou 215000, China
| | - Jiejie Jian
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Yi Rong
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Ruizhi Yang
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
| | - Yadong Xu
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Chao Jin
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
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12
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Sutiawan J, Hadi YS, Nawawi DS, Abdillah IB, Zulfiana D, Lubis MAR, Nugroho S, Astuti D, Zhao Z, Handayani M, Lisak G, Kusumah SS, Hermawan D. The properties of particleboard composites made from three sorghum (Sorghum bicolor) accessions using maleic acid adhesive. Chemosphere 2022; 290:133163. [PMID: 34871617 DOI: 10.1016/j.chemosphere.2021.133163] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/23/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
It is very important to develop green composite materials owing to increasing global environmental issues. One of the alternative raw materials for the production of green composites is biomass. Bagasse sorghum is a promising alternative raw material for the manufacturing of particleboard composites. The influence of sorghum accessions on the performance of particleboard composites was analyzed in this study. In addition, the particleboard quality was made using maleic acid (MA) adhesive and compared with citric acid (CA) and phenol-formaldehyde (PF) adhesives. Three accessions of sorghum, 4183A, super 1, and Pahat, were used as raw materials in particleboard manufacturing. The 20 wt% MA adhesive was applied in particleboard manufacturing. The board dimensions and density targets were 30 × 30 × 0.9 cm3 and 0.8 g/cm3, respectively. The particle mat was pressed 200 °C for 10 min with a maximum of 6.5 MPa. For reference, the JIS A 5908-2003 was used to evaluate physical and mechanical properties, SNI 7207-2014 was used for the resistance against termites, and JIS K 1571-2004 for evaluated the particleboard against decay. The results showed that the sorghum accession in this research did not affect the quality of the particleboard. The thickness swelling (TS), internal bond (IB), modulus of elasticity (MOE), and modulus of rupture (MOR) of particleboard satisfied JIS A 5908-2003 type 8. The particleboard using MA was comparable with those bonded with CA and had better durability against termites and decay than PF adhesives. The ester linkages were formed due to the reaction between MA (carboxyl groups) and the sorghum bagasse (hydroxyl groups) after being analyzed using Fourier transform infrared (FTIR). Therefore, particleboard in this study has good quality.
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Affiliation(s)
- Jajang Sutiawan
- Forest Products Department, Faculty of Forestry and Environment, IPB University, Bogor, Indonesia; Forest Product Department, Faculty of Forestry, Universitas Sumatera Utara, Medan, Indonesia
| | - Yusuf Sudo Hadi
- Forest Products Department, Faculty of Forestry and Environment, IPB University, Bogor, Indonesia
| | - Deded Sarip Nawawi
- Forest Products Department, Faculty of Forestry and Environment, IPB University, Bogor, Indonesia
| | - Imam Busyra Abdillah
- Forest Products Department, Faculty of Forestry and Environment, IPB University, Bogor, Indonesia
| | - Deni Zulfiana
- Research Center for Biomaterials, National Research and Innovation Agency, Cibinong Science Center, Cibinong, Indonesia
| | - Muhammad Adly Rahandi Lubis
- Research Center for Biomaterials, National Research and Innovation Agency, Cibinong Science Center, Cibinong, Indonesia
| | - Satya Nugroho
- Research Center for Biotechnology, National Research and Innovation Agency, Cibinong Science Center, Cibinong, Indonesia
| | - Dwi Astuti
- Research Center for Biotechnology, National Research and Innovation Agency, Cibinong Science Center, Cibinong, Indonesia
| | - Zhongyuan Zhao
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, China
| | - Murni Handayani
- Research Center for Metallurgy and Materials, National Research and Innovation Agency, Cibinong Science Center, Cibinong, Indonesia
| | - Grzegorz Lisak
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Residues and Resource Reclamation Centre (R3C), Nanyang Environment and Water Research Institute (NEWRI), 1 Cleantech Loop, 637141, Singapore
| | - Sukma Surya Kusumah
- Research Center for Biomaterials, National Research and Innovation Agency, Cibinong Science Center, Cibinong, Indonesia.
| | - Dede Hermawan
- Forest Products Department, Faculty of Forestry and Environment, IPB University, Bogor, Indonesia.
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13
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Uwai Y, Nabekura T. Effect of Experimental Fanconi Syndrome on Tubular Reabsorption of Lithium in Rats. Pharmacology 2021; 106:446-450. [PMID: 33979799 DOI: 10.1159/000515934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/13/2021] [Indexed: 11/19/2022]
Abstract
Lithium, administered to patients of bipolar disorders, is mainly excreted into urine, and tubular reabsorption at the proximal tubule is involved in the renal handling of lithium. In this study, we examined the renal excretion of lithium in rats with Fanconi syndrome, characterized by defects of transports of various compounds at the proximal tubules, induced by maleic acid. After maleic acid was intravenously injected, mannitol and lithium chloride were infused in turn. Using samples of plasma and bladder urine during the mannitol infusion, renal parameters were determined. Pharmacokinetic parameters of lithium were obtained using samples during the lithium chloride infusion. Maleic acid decreased creatinine clearance and increased the fractional excretion of glucose and phosphate, suggesting the induction of Fanconi syndrome. In rats with Fanconi syndrome, plasma concentration of lithium was increased, and its renal clearance was decreased. No effect on the fractional excretion of lithium was exhibited. This study represents that the tubular reabsorption of lithium was impaired to the same degree with glomerular filtration in rats with experimental Fanconi syndrome and that the dysfunction of the tubular reabsorption of glucose and phosphate was more severe. It is possible that Fanconi syndrome inhibited the reabsorption of lithium at the proximal tubule and facilitated the reabsorption of lithium from the loop of Henle to the collecting duct.
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Affiliation(s)
- Yuichi Uwai
- Department of Pharmaceutics, School of Pharmacy, Aichi Gakuin University, Nagoya, Japan
| | - Tomohiro Nabekura
- Department of Pharmaceutics, School of Pharmacy, Aichi Gakuin University, Nagoya, Japan
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14
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Fontanals N, Zohar J, Borrull F, Ronka S, Marcé RM. Development of a maleic acid-based material to selectively solid-phase extract basic compounds from environmental samples. J Chromatogr A 2021; 1647:462165. [PMID: 33945931 DOI: 10.1016/j.chroma.2021.462165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 10/21/2022]
Abstract
This study presents a novel mixed-mode weak cation-exchange (WCX) material. This material was prepared by means of the functionalization of a mesoporous divinylbenzene (DVB) resin with maleic acid (maleic acid-DVB), which yielded a high carboxylic moiety content resulting in WCX interactions as well as suitable specific surface area for reversed-phase interactions. After the optimization of the solid-phase extraction (SPE) protocol to enhance the selectivity of the sorbent, this material was evaluated as a novel WCX sorbent in the SPE of a group of drugs from environmental water samples. The method is based on SPE followed by liquid chromatography (LC) coupled to high resolution mass spectrometry (HRMS) with an Orbitrap analyzer, and was validated and applied for the determination of basic drugs in river, effluent and influent wastewater samples. Maleic acid-DVB sorbent yielded suitable recovery rates (57% to 89%) and an acceptable matrix effect (<32%) thanks to the effective washing step included when these environmental waters were loaded through the novel resin. The method was applied to different environmental water samples and some basic drugs were suitably quantified in these environmental samples.
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Affiliation(s)
- N Fontanals
- Department of Analytical Chemistry and Organic Chemistry, Universitat Rovira i Virgili, Marcel•lí Domingo, 1, Campus Sescelades, 43007 Tarragona, Spain.
| | - J Zohar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - F Borrull
- Department of Analytical Chemistry and Organic Chemistry, Universitat Rovira i Virgili, Marcel•lí Domingo, 1, Campus Sescelades, 43007 Tarragona, Spain
| | - S Ronka
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże, Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - R M Marcé
- Department of Analytical Chemistry and Organic Chemistry, Universitat Rovira i Virgili, Marcel•lí Domingo, 1, Campus Sescelades, 43007 Tarragona, Spain
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15
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Liu Z, Shi E, Ma F, Jiang K. An integrated biorefinery process for co-production of xylose and glucose using maleic acid as efficient catalyst. Bioresour Technol 2021; 325:124698. [PMID: 33465645 DOI: 10.1016/j.biortech.2021.124698] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
This study aims to valorize wheat straw for xylose and glucose recovery using maleic acid in the pretreatment. The process conditions of maleic acid hydrolysis of wheat straw for xylose recovery were optimized by response surface methodology, through which the maximum xylose recovery of 77.12% versus minimum furfural yield of 1.61% were achieved using 70 g/L solid-to-liquid ratio and 0.1 mol/L maleic acid for 40 min at 150 °C. Moreover, 88.58% cellulose conversion was achieved by enzymatic hydrolysis of maleic acid-pretreated wheat straw. Results showed that maleic acid was an effective pretreatment solvent for sugars recovery: 19.88 g xylose and 30.89 g glucose were respectively obtained from 100 g wheat straw due to acidic and enzymatic hydrolysis, with only 0.37 g furfural produced. This study provides a strategy for hydrolyzing wheat straw to produce fermentable sugars with low amount of degradation product.
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Affiliation(s)
- Zhenghui Liu
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou 310053, People's Republic of China
| | - Enze Shi
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou 310053, People's Republic of China
| | - Feng Ma
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou 310053, People's Republic of China
| | - Kankan Jiang
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou 310053, People's Republic of China.
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16
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Lyu Q, Chen X, Zhang Y, Yu H, Han L, Xiao W. One-pot fractionation of corn stover with peracetic acid and maleic acid. Bioresour Technol 2021; 320:124306. [PMID: 33157440 DOI: 10.1016/j.biortech.2020.124306] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/18/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
Lignocellulose fractionation is a primary treatment to enhance cellulose accessibility and multi-component use. Herein, the development of a one-step fractionation is reported for cellulose enrichment from corn stover using a low concentration of peracetic acid combined with maleic acid (PAM). The effects of pretreatment parameters on the contents of cellulose, hemicellulose, and lignin were investigated. After cooking for 1 h at 130 °C with 1.5 wt% peracetic acid and 3 wt% maleic acid, 86.83% of corn stover cellulose remained in the solid residue while 88.21% of hemicellulose and 87.77% of lignin dissolved into the aqueous liquid. Hemicellulose was primarily hydrolyzed into xylose with 84.58% recovered during the PAM process. The cellulose-rich residue was enzymatically hydrolyzed with a glucose yield of 89.65%, which was two to three times that of untreated substrate. Generally, the proposed process offers a promising approach for efficient fractionation of lignocellulose under mild and environmental-friendly conditions.
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Affiliation(s)
- Qian Lyu
- College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Xueli Chen
- College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Yuxuan Zhang
- College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Haitao Yu
- College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Lujia Han
- College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Weihua Xiao
- College of Engineering, China Agricultural University, Box 191, Beijing 100083, China.
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17
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Gokturk H, Ozkocak I, Aydin U, Serefli ED. Effect of different chelating agents and their surface tension on the amount of apically extruded debris. J Dent Sci 2020; 16:195-200. [PMID: 33384797 PMCID: PMC7770288 DOI: 10.1016/j.jds.2020.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/14/2020] [Indexed: 12/01/2022] Open
Abstract
Background/purpose During root canal preparation apical extrusion is an undesirable situation that can cause postoperative complications. The aim of the present study is to evaluate the effect of the presence of different chelators in root canals during preparation on the amount of apically extruded debris and to investigate the effect of surface tension of irrigant on the apical extrusion. Materials and methods Ninety extracted mandibular incisor teeth were included. Prior to canal preparation, the teeth were mounted to Eppendorf tubes. Root canals of the samples were prepared with Reciproc instruments in the presence of different chelating agents (17% EDTA-liquid, 17% EDTA-gel, 7% maleic acid, 2.25% peracetic acid, 10% citric acid) and 5% NaOCl. Apically extruded debris was collected in Eppendorf tubes and weighted with an electronic balance. The surface tension of solutions was calculated with the ring method using a du Noüy ring digital tensiometer. The statistical analysis was performed with Tamhane's T2 test for apical extrusion and the Tukey for surface tension. The correlation between apical extrusion and surface tension was compared using Pearson's coefficient. Results The least amount of apically extruded debris was with EDTA-gel, peracetic acid and citric acid which were similar to each other. NaOCl had the highest surface tension whereas peracetic acid and EDTA-liquid had the lowest. There was no significant correlation exists between apical extrusion and surface tension. Conclusion The presence of EDTA-gel, citric acid and peracetic acid in root canals during preparation decreased the amount of apically extruded debris compared to other solutions. The investigated irrigation solutions have no significant effect on the amount of apical debris extrusion.
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Affiliation(s)
- Hakan Gokturk
- Department of Endodontics, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Ismail Ozkocak
- Department of Endodontics, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Ugur Aydin
- Department of Endodontics, Gaziantep University, Gaziantep, Turkey
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18
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Briones-Herrera A, Ramírez-Camacho I, Zazueta C, Tapia E, Pedraza-Chaverri J. Altered proximal tubule fatty acid utilization, mitophagy, fission and supercomplexes arrangement in experimental Fanconi syndrome are ameliorated by sulforaphane-induced mitochondrial biogenesis. Free Radic Biol Med 2020; 153:54-70. [PMID: 32315768 DOI: 10.1016/j.freeradbiomed.2020.04.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/31/2020] [Accepted: 04/09/2020] [Indexed: 12/27/2022]
Abstract
The kidney proximal tubule function relies on oxidative phosphorylation (OXPHOS), thus mitochondrial dysfunction is characteristic of acute kidney injury (AKI). Maleic acid (MA) can induce an experimental model of Fanconi syndrome that is associated to oxidative stress and decreased oxygen consumption. Sulforaphane (SF) is an antioxidant known to protect against MA-induced AKI. The molecular basis by which SF maintains the bioenergetics in MA-induced AKI is not fully understood. To achieve it, rats were submitted to a protective scheme: SF (1 mg/kg/day i.p.) for four days and, at the fourth day, they received a single dose of MA (400 mg/kg i.p.), getting four main experimental groups: (1) control (CT), (2) MA-nephropathy (MA), (3) SF-protected and (4) SF-control (SF). Additionally, a similar protective schema was tested in cultured NRK-52E cells with different concentrations of SF and MA. In the animal model, SF prevented the MA-induced alterations: decrease in fatty acid-related oxygen consumption rate, OXPHOS capacity, mitochondrial membrane potential (Ψmt), and the activity of complex I (CI) as its monomeric and supercomplexes forms; the antioxidant also increased the activity of cytochrome c oxidase as well as mitochondrial biogenesis markers. Thus, SF prevented the MA-induced increase in fission, mitophagy and autophagy markers. In NRK-52E cells, we found that SF prevented the MA-induced cell death, increased mitochondrial mass and ameliorated the loss of Ψmt. We concluded that SF-induced biogenesis protects against mitochondrial dysfunction maintaining Ψmt, activities of mitochondrial complexes and supercomplexes, and prevents the extensive fission and mitophagy.
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Affiliation(s)
- Alfredo Briones-Herrera
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
| | - Ixchel Ramírez-Camacho
- Department of Cardiovascular Medicine, National Institute of Cardiology "Ignacio Chávez", Mexico City, 14080, Mexico
| | - Cecilia Zazueta
- Department of Cardiovascular Medicine, National Institute of Cardiology "Ignacio Chávez", Mexico City, 14080, Mexico
| | - Edilia Tapia
- Department of Cardio-Renal Pathophysiology, National Institute of Cardiology "Ignacio Chávez", Mexico City, 14080, Mexico
| | - José Pedraza-Chaverri
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico.
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19
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Bayuseno AP, Perwitasari DS, Muryanto S, Tauviqirrahman M, Jamari J. Kinetics and morphological characteristics of struvite (MgNH 4PO 4.6H 2O) under the influence of maleic acid. Heliyon 2020; 6:e03533. [PMID: 32215325 PMCID: PMC7090354 DOI: 10.1016/j.heliyon.2020.e03533] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/22/2020] [Accepted: 03/02/2020] [Indexed: 11/29/2022] Open
Abstract
This work reports a stirred-batch lab crystallization to examine the influence of maleic acid (HO2CCHCHCO2H), and temperatures (30 and 40 °C) on crystallization kinetics and morphology of struvite. The crystallization was followed by measuring the pH change up to 70 min. The pH decreased drastically for the first 5 min of the run, then started to tail off. It was found that the crystallization rate constants range from 1.608 to 6.534 per hour, which agrees with the most published value. Higher maleic acid concentrations resulted in greater growth retardation; the highest retardation was 74.21%, which was achieved for 30 °C with 20.00 ppm maleic acid. SEM imaging of the obtained precipitates showed irregular prismatic morphology, and the associated EDX confirmed that the precipitates were struvite (MgNH4PO4⋅6H2O). As checked through XRD, the crystalline nature of the struvite was further confirmed, and that co-precipitation of struvite with struvite-K was observed. The co-precipitation was the result of K+ adsorption onto the crystal surface. Temperatures had less influence on struvite crystallization. At 40oC and 20.00 ppm the rate constant was 1.332 per hour; whereas at 30oC and 0.00 ppm) the corresponding was 1.776 per hour, indicating the retardation of about 25%. Thus, the temperature effect is only 1/3 of the maleic acid effect. The current findings suggest that the presence of maleic acid can be used to elucidate the mechanism of crystallization as well as the crystalline phase transformation of struvite. In practical terms, maleic acid could be potential as a scale inhibitor.
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Affiliation(s)
| | - Dyah Suci Perwitasari
- Department of Chemical Engineering, Universitas Pembangunan National "Veteran" Jawa Timur, Surabaya 60294 Indonesia
| | - Stefanus Muryanto
- Department of Chemical Engineering, UNTAG University in Semarang, Bendhan Dhuwur Campus, Semarang 50233, Indonesia
| | - Mohammad Tauviqirrahman
- Department of Mechanical Engineering, Diponegoro University, Tembalang Campus, Semarang 50275, Indonesia
| | - Jamari Jamari
- Department of Mechanical Engineering, Diponegoro University, Tembalang Campus, Semarang 50275, Indonesia
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20
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Roginski AC, Wajner A, Cecatto C, Wajner SM, Castilho RF, Wajner M, Amaral AU. Disturbance of bioenergetics and calcium homeostasis provoked by metabolites accumulating in propionic acidemia in heart mitochondria of developing rats. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165682. [PMID: 31931102 DOI: 10.1016/j.bbadis.2020.165682] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 12/14/2022]
Abstract
Propionic acidemia is caused by lack of propionyl-CoA carboxylase activity. It is biochemically characterized by accumulation of propionic (PA) and 3-hydroxypropionic (3OHPA) acids and clinically by severe encephalopathy and cardiomyopathy. High urinary excretion of maleic acid (MA) and 2-methylcitric acid (2MCA) is also found in the affected patients. Considering that the underlying mechanisms of cardiac disease in propionic acidemia are practically unknown, we investigated the effects of PA, 3OHPA, MA and 2MCA (0.05-5 mM) on important mitochondrial functions in isolated rat heart mitochondria, as well as in crude heart homogenates and cultured cardiomyocytes. MA markedly inhibited state 3 (ADP-stimulated), state 4 (non-phosphorylating) and uncoupled (CCCP-stimulated) respiration in mitochondria supported by pyruvate plus malate or α-ketoglutarate associated with reduced ATP production, whereas PA and 3OHPA provoked less intense inhibitory effects and 2MCA no alterations at all. MA-induced impaired respiration was attenuated by coenzyme A supplementation. In addition, MA significantly inhibited α-ketoglutarate dehydrogenase activity. Similar data were obtained in heart crude homogenates and permeabilized cardiomyocytes. MA, and PA to a lesser degree, also decreased mitochondrial membrane potential (ΔΨm), NAD(P)H content and Ca2+ retention capacity, and caused swelling in Ca2+-loaded mitochondria. Noteworthy, ΔΨm collapse and mitochondrial swelling were fully prevented or attenuated by cyclosporin A and ADP, indicating the involvement of mitochondrial permeability transition. It is therefore proposed that disturbance of mitochondrial energy and calcium homeostasis caused by MA, as well as by PA and 3OHPA to a lesser extent, may be involved in the cardiomyopathy commonly affecting propionic acidemic patients.
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Affiliation(s)
- Ana Cristina Roginski
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Alessandro Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Cristiane Cecatto
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Simone Magagnin Wajner
- Departamento de Medicina Interna, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Roger Frigério Castilho
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Alexandre Umpierrez Amaral
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Ciências Biológicas, Universidade Regional Integrada do Alto Uruguai e das Missões, Erechim, RS, Brazil.
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Amarasekara AS, Wiredu B, Lawrence YM. Hydrolysis and interactions of d-cellobiose with polycarboxylic acids. Carbohydr Res 2019; 475:34-38. [PMID: 30782551 DOI: 10.1016/j.carres.2019.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 01/30/2019] [Accepted: 02/07/2019] [Indexed: 12/25/2022]
Abstract
The hydrolysis of cellulose model compound d-cellobiose was studied with a series of eight common polycarboxylic acids and two monocarboxylic acids in aqueous medium using 0.500 mmol -COOH/L at 170 °C. The maleic acid showed the highest catalytic activity with turnover frequency (TOF) of 29.5 h-1. The interaction of carboxylic acids with d-cellobiose in DMSO‑d6 was studied by determination of the pseudo first-order rate constant kH of anomeric -OH exchange rate in cellobiose using 1H NMR spectroscopy. The maleic, oxalic and citric acids showed infinitely large kH values indicating very strong interactions with d-cellobiose. The next highest interactions were found with phthalic acid (kH = 248.8 Hz). The FT-IR studies showed significant carboxylic acid C=O stretching frequency shifts (ΔνC=O) of 12, 13 and 10 cm-1 for maleic, oxalic and acetic acids respectively in mixtures with d-cellobiose.
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Affiliation(s)
- Ananda S Amarasekara
- Department of Chemistry, Prairie View A&M University, Prairie View, TX, 77446, USA.
| | - Bernard Wiredu
- Department of Chemistry, Prairie View A&M University, Prairie View, TX, 77446, USA
| | - Yen Maroney Lawrence
- Department of Chemistry, Prairie View A&M University, Prairie View, TX, 77446, USA
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Mohammadi Z, Shalavi S, Yaripour S, Kinoshita JI, Manabe A, Kobayashi M, Giardino L, Palazzi F, Sharifi F, Jafarzadeh H. Smear Layer Removing Ability of Root Canal Irrigation Solutions: A Review. J Contemp Dent Pract 2019; 20:395-402. [PMID: 31204334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
AIM The purpose of this review is to address the smear layer removing the ability of root different canal irrigants including ethylenediaminetetraacetic acid (EDTA), a mixture of tetracycline, acid and detergent (MTAD), tetraclean, citric acid, Q-Mix, maleic acid, and smear clear. BACKGROUND Smear layer is a layer which is produced during instrumentation. It contains both organic and inorganic materials. It may also contain bacteria and their byproduct considering the root canal situation. This layer may prevent the penetration of the healing material introduced to the canal to the interior of the dentinal tubules. In addition, it can affect the adaptation of sealing materials to the root canal walls. REVIEW RESULTS The smear layer removal ability of MTAD is superior and faster than EDTA. Tetraclean is similarly composed of an acid, an antibiotic, and a detergent. The presence of doxycycline is believed to help the smear layer removal ability of these irrigants. Antibiotics such as tetracycline had similar smear layer removal ability as even citric acid. EDTA is an amino acid with a chelating ability that sequestrates metal ions. Some believed EDTA smear layer removing ability is better than MTAD, tetraclean, SmearClear, and 20% citric acid which is controversial in case of comparison between MTAD and EDTA. Phosphoric acid is efficient enough to be comparable to EDTA in removing the smear layer. Maleic acid is an organic compound with acid etching smear layer removal. Its ability seems to be similar or even better than EDTA. Citric acid as another organic acid is believed to be used as smear removing agent. HEBP is another chelating agent that can be used in combination with NaOCl; however, HEBP is a weak decalcifying agent compared to EDTA and hence cannot be applied as a mere final rinse. QMiX is a combination of CHX, EDTA, and detergent and should be used at final rinse. It is believed that QMiX is as efficient as EDTA. Smear clear is a 17% EDTA solution including an anionic and cationic (cetrimide) surfactant. The ability of QMiX is similar to EDTA. CONCLUSION There are different canal irrigation solutions with various smear layer removal ability that some should be used as a mere final rinse and some should not. CLINICAL SIGNIFICANCE The usage of canal irrigation solutions depends on the clinical situation and preference of the dentists. This study provides a good guide for clinician of the field.
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Affiliation(s)
- Zahed Mohammadi
- Iranian Center for Endodontic Research (ICER), Research Institute of Dental Sciences, Shaheed Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Sousan Shalavi
- General Dental Practitioner, Hamedan, Islamic Republic of Iran
| | - Shapour Yaripour
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hamedan University of Medical Sciences, Hamedan, Islamic Republic of Iran
| | - Jun-Ichiro Kinoshita
- Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
| | - Atsufumi Manabe
- Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
| | - Mikihiro Kobayashi
- Department of Conservative Dentistry, Showa University Dental Hospital, Tokyo, Japan
| | - Luciano Giardino
- Department of Periodontology, Endodontology, Pharmacology and Microbiology, Dental School, University of Brescia, Italy
| | - Flavio Palazzi
- Department of Odontostomatological and Maxillofacial Sciences, Federico II University of Naples, Italy
| | - Farid Sharifi
- Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
| | - Hamid Jafarzadeh
- Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran, Phone: +98-51-38829501, e-mail: ;
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Güzel Bayülken D, Bostancıoğlu RB, Koparal AT, Ayaz Tüylü B, Dağ A, Benkli K. Assessment of in vitro cytotoxic and genotoxic activities of some trimethoprim conjugates. Cytotechnology 2018; 70:1051-1059. [PMID: 29335807 PMCID: PMC6021285 DOI: 10.1007/s10616-018-0187-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 01/02/2018] [Indexed: 10/18/2022] Open
Abstract
Trimethoprim, a commonly used antibacterial agent, is widely applied in the treatment of variety of infections in human. A few studies have demonstrated an extensive exposure of man to antibiotics, but there is still a lack of data for cytotoxic effects including nephrotoxicity, gastrointestinal toxicity, hematotoxicity, neurotoxicity and ototoxicity. The main purpose behind this study was to determine cytotoxic and genotoxic activities of trimethoprim (1), trimethoprim with maleic acid (2) and trimethoprim in conjugation with oxalic acid dihydrate (3). The cytotoxic effects of these three conjugates were elucidated by employing 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoium bromide (MTT) assay using embryonic rat fibroblast-like cell line (F2408) and H-ras oncogene activated embryonic rat fibroblast-like cancer cell line (5RP7). Additionally, determination of genotoxic activity of these three compounds were studied by using cytokinesis blocked micronucleus assay (CBMN) in human lymphocytes. The results demonstrated that trimethoprim alone and its combination with other compounds are able to induce both cytotoxic and genotoxic damage on cultured cells (F2408, 5RP7, human lymphocytes).
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Affiliation(s)
- Devrim Güzel Bayülken
- Department of Biology, Faculty of Sciences, Anadolu University, 26470 Eskisehir, Turkey
| | | | - A. Tansu Koparal
- Department of Biology, Faculty of Sciences, Anadolu University, 26470 Eskisehir, Turkey
| | - Berrin Ayaz Tüylü
- Department of Biology, Faculty of Sciences, Anadolu University, 26470 Eskisehir, Turkey
| | - Aydan Dağ
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Bezmialem Vakif University, 34093 Istanbul, Turkey
| | - Kadriye Benkli
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Bezmialem Vakif University, 34093 Istanbul, Turkey
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Briones-Herrera A, Avila-Rojas SH, Aparicio-Trejo OE, Cristóbal M, León-Contreras JC, Hernández-Pando R, Pinzón E, Pedraza-Chaverri J, Sánchez-Lozada LG, Tapia E. Sulforaphane prevents maleic acid-induced nephropathy by modulating renal hemodynamics, mitochondrial bioenergetics and oxidative stress. Food Chem Toxicol 2018; 115:185-97. [PMID: 29548851 DOI: 10.1016/j.fct.2018.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/14/2018] [Accepted: 03/12/2018] [Indexed: 12/14/2022]
Abstract
Maleic acid (MA)-induced nephropathy that is characterized by proteinuria, glycosuria, phosphaturia and a deficient urinary acidification and concentration. Sulforaphane (SF) is an indirect antioxidant that shows nephroprotective effects. The aim of the present work was to test the pre-treatment with SF against the MA-induced nephropathy. Wistar rats (230-260 g) were separated in the following groups: control, MA (which received 400 mg/kg of MA), SF + MA (which received MA and 1 mg/kg of SF each day for four days) and SF (which only received SF). MA induced proteinuria, an increase in urinary excretion of N-acetyl-β-d-glucosaminidase, and a decrease in plasma glutathione peroxidase activity, renal blood flow, and oxygenation and perfusion of renal cortex. All these impairments correlated with higher levels of oxidative damage markers and exacerbated superoxide anion production on renal cortex. Moreover, MA impaired mitochondrial bioenergetics associated to complex I, mitochondrial membrane potential and respiratory control index and increased the mitochondrial production of hydrogen peroxide. Further it disrupted mitochondrial morphology. SF prevented all the above-described alterations. In conclusion, the protective effect of SF against MA-induced nephropathy is associated with preservation of mitochondrial bioenergetics, amelioration of oxidative stress and improvement of renal hemodynamics and renal cortex oxygenation.
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Mahmud JA, Hasanuzzaman M, Nahar K, Rahman A, Hossain MS, Fujita M. Maleic acid assisted improvement of metal chelation and antioxidant metabolism confers chromium tolerance in Brassica juncea L. Ecotoxicol Environ Saf 2017; 144:216-226. [PMID: 28624590 DOI: 10.1016/j.ecoenv.2017.06.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 05/19/2017] [Accepted: 06/02/2017] [Indexed: 05/21/2023]
Abstract
Chromium (Cr) is a highly toxic environmental pollutant that negatively affects plant growth and development. Thus, remediating Cr from soil or increasing plant tolerance against Cr stress is urgent. Organic acids are recognized as agents of phytoremediation and as exogenous protectants, but using maleic acid (MA) to attain these results has not yet been studied. Therefore, our study investigated the effects of MA on Cr uptake and mitigation of Cr toxicity. We treated 8-d-old Indian mustard (Brassica juncea L.) seedlings with Cr (0.15mM and 0.3mM K2CrO4, 5 days) alone and in combination with MA (0.25mM) in a semi-hydroponic medium. Under Cr stress, plants accumulated Cr in both the roots and shoots in a dose-dependent manner, where the roots showed higher accumulation. Chromium stress reduced the growth and biomass of the Indian mustard plants by reducing water status and photosynthetic pigments, and increased oxidative damage due to generation of toxic reactive oxygen species (ROS) and methylglyoxal (MG). Chromium stress also interfered with the function of the antioxidant defense and glyoxalase systems. However, using MA in the Cr-stressed plants further increased Cr uptake in the roots, but it slightly reduced the translocation of Cr from the roots to the shoots at a lower dose of Cr and significantly at a higher dose. Moreover, MA also increased the other non-protein thiols (NPTs) containing phytochelatin (PC) content of the seedlings, which reduced Cr toxicity. Supplementing the stressed plants with MA upregulated the non-enzymatic antioxidants (ascorbate, AsA; glutathione, GSH); the activities of the enzymatic antioxidants including ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), glutathione peroxidase (GPX), superoxide dismutase (SOD), and catalase (CAT); and the enzymes of the glyoxalase system including glyoxalase I (Gly I) and glyoxalase II (Gly II); and finally reduced oxidative damage and increased the chlorophyll content and water status as well the growth and biomass of the plants. Our findings suggested two potential uses of MA: first, enhancing phytoremediation, principally phytostabilization and second, working as an exogenous protectant to enhance Cr tolerance.
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Affiliation(s)
- Jubayer Al Mahmud
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan; Department of Agroforestry and Environmental Science, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, Bangladesh
| | - Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, Bangladesh.
| | - Kamrun Nahar
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan; Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, Bangladesh
| | - Anisur Rahman
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan; Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, Bangladesh
| | - Md Shahadat Hossain
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan
| | - Masayuki Fujita
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan.
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Ballal NV, Sona M, Tay FR. Effects of smear layer removal agents on the physical properties and microstructure of mineral trioxide aggregate cement. J Dent 2017; 66:32-6. [PMID: 28867660 DOI: 10.1016/j.jdent.2017.08.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/12/2017] [Accepted: 08/30/2017] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To compare the effect of QMix (Dentsply Sirona), 7% maleic acid (MA), and 17% ethylenediaminetetraacetic acid (EDTA) on the microhardness, flexural strength and microstructure of mineral trioxide aggregate (MTA; ProRoot MTA, Dentsply Sirona). METHODS Forty MTA specimens were divided into four groups: [I] QMix [II] 7% MA [III] 17% EDTA and [IV] distilled water (control). After treatment with 5mL of the respective solution for 1min, the specimens were tested for microhardness using a Knoop hardness tester. Forty additional specimens were similarly treated and evaluated for the flexural strength using a universal testing machine. For microstructure evaluation, MTA specimens were treated in a similar manner and examined by X-ray diffractometry and scanning electron microscopy (SEM). RESULTS For microhardness, there were no differences between distilled water, QMix and EDTA groups. However, MTA exposed to distilled water had higher microhardness than MA. When compared with QMix and EDTA, MA had lower microhardness; there was no difference between EDTA and QMix. For flexural strength, distilled water group had higher flexural strength than the other agents. There were no differences between EDTA vs MA and EDTA vs QMix. Specimens treated with QMix had higher flexural strength than MA. X-ray diffraction indicated that EDTA inhibited hydration of MTA. For SEM, all the tested agents altered the microstructure of MTA when compared to distilled water. CONCLUSION MA had more detrimental effect on the physical properties of MTA and EDTA was more detrimental to the hydration of MTA. CLINICAL SIGNIFICANCE The present study highlights the effect of newer chelating agents on the physical properties and microstructure of MTA. Preventing the deterioration of MTA is important for its long term success in endodontic procedures.
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Abstract
Microorganisms and their by-products play a critical role in pulp and periradicular pathosis. Therefore, one of the main purposes of root canal treatment is disinfection of the entire system of the canal. This aim may be obtained using mechanical preparation, chemical irrigation, and temporary medication of the canal. For this purpose, various irrigation solutions have been advocated. Common root canal irrigants, such as sodium hypochlorite, chlorhexidine, and a mixture of tetracycline, acid, and detergent have been extensively reviewed. The aim of this review was to address the less common newer root canal irrigation solutions, such as citric acid, maleic acid, electrochemically activated water, green tea, ozonated water, and SmearClear.
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Affiliation(s)
- Zahed Mohammadi
- Endodontic Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences Tehran, Islamic Republic of Iran; Iran's National Elites Foundation, Tehran, Islamic Republic of Iran
| | - Hamid Jafarzadeh
- Department of Endodontics, Faculty of Dentistry, Dental Research Center, Mashhad University of Medical Sciences Mashhad, Islamic Republic of Iran, Phone: +985138829501, e-mail: ;
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Wang CC, Lin YC, Cheng YH, Tung CW. Profiling transcriptomes of human SH-SY5Y neuroblastoma cells exposed to maleic acid. PeerJ 2017; 5:e3175. [PMID: 28392987 PMCID: PMC5384566 DOI: 10.7717/peerj.3175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 03/13/2017] [Indexed: 01/10/2023] Open
Abstract
Background Maleic acid is a multi-functional chemical widely used in the field of industrial chemistry for producing food additives and food contact materials. As maleic acid may contaminate food by the release from food packages or intentional addition, it raises the concern about the effects of excessive dietary exposure to maleic acid on human health. However, the influence of maleic acid on human health has not been thoroughly studied. In silico toxicogenomics approaches have found the association between maleic acid and nervous system disease in human. The aim of this study is to experimentally explore the effects of maleic acid on human neuronal cells. Methods A microarray-based transcriptome profiling was performed to offer a better understanding of the effects of maleic acid on human health. Gene expression profiles of human neuroblastoma SH-SY5Y cells exposed to three concentrations of maleic acid (10, 50, and 100 μM) for 24 h were analyzed. Genes which were differentially expressed in dose-dependent manners were identified and further analyzed with an enrichment analysis. The expression profile of selected genes related to the inferred functional changes was validated using quantitative polymerase chain reaction (qPCR). Specific fluorescence probes were applied to observe the inferred functional changes in maleic acid-treated neuronal cells. Results A total of 316 differentially expressed genes (141 upregulated and 175 downregulated) were identified in response to the treatment of maleic acid. The enrichment analysis showed that DNA binding and metal ion binding were the significant molecular functions (MFs) of the neuronal cells affected by maleic acid. Maleic acid exposure decreased the expression of genes associated with calcium and thiol levels of the cells in a dose-dependent manner. The levels of intracellular calcium and thiol levels were also affected by maleic acid dose-dependent. Discussion The exposure to maleic acid is found to decrease the cellular calcium and thiol levels in human neuronal cells at both transcriptional and functional levels. This study reported the first transcriptomic profiling of human neuronal cells treated with maleic acid. It is also the first experimental validation of chemical effects predicted by in silico toxicogenomics approaches. The proposed approach may be useful in understanding the potential effects of other poorly characterized chemicals on human health.
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Affiliation(s)
- Chia-Chi Wang
- Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli County, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan; Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung City, Taiwan
| | - Yin-Chi Lin
- Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Yin-Hua Cheng
- Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University , Kaohsiung City , Taiwan
| | - Chun-Wei Tung
- Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan; National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli County, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan; Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan
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Kim D, Ximenes EA, Nichols NN, Cao G, Frazer SE, Ladisch MR. Maleic acid treatment of biologically detoxified corn stover liquor. Bioresour Technol 2016; 216:437-445. [PMID: 27262718 DOI: 10.1016/j.biortech.2016.05.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/20/2016] [Accepted: 05/21/2016] [Indexed: 06/05/2023]
Abstract
Elimination of microbial and enzyme inhibitors from pretreated lignocellulose is critical for effective cellulose conversion and yeast fermentation of liquid hot water (LHW) pretreated corn stover. In this study, xylan oligomers were hydrolyzed using either maleic acid or hemicellulases, and other soluble inhibitors were eliminated by biological detoxification. Corn stover at 20% (w/v) solids was LHW pretreated LHW (severity factor: 4.3). The 20% solids (w/v) pretreated corn stover derived liquor was recovered and biologically detoxified using the fungus Coniochaeta ligniaria NRRL30616. After maleic acid treatment, and using 5 filter paper units of cellulase/g glucan (8.3mg protein/g glucan), 73% higher cellulose conversion from corn stover was obtained for biodetoxified samples compared to undetoxified samples. This corresponded to 87% cellulose to glucose conversion. Ethanol production by yeast of pretreated corn stover solids hydrolysate was 1.4 times higher than undetoxified samples, with a reduction of 3h in the fermentation lag phase.
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Affiliation(s)
- Daehwan Kim
- Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN 47907-2032, United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907-2032, United States
| | - Eduardo A Ximenes
- Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN 47907-2032, United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907-2032, United States
| | - Nancy N Nichols
- Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, 1815 N. University Street, Peoria, IL 61604, United States
| | - Guangli Cao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, China
| | - Sarah E Frazer
- Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, 1815 N. University Street, Peoria, IL 61604, United States
| | - Michael R Ladisch
- Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN 47907-2032, United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907-2032, United States; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907-2032, United States.
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Nayaka GP, Pai KV, Manjanna J, Keny SJ. Use of mild organic acid reagents to recover the Co and Li from spent Li-ion batteries. Waste Manag 2016; 51:234-238. [PMID: 26709049 DOI: 10.1016/j.wasman.2015.12.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 12/11/2015] [Accepted: 12/12/2015] [Indexed: 05/28/2023]
Abstract
New organic acid mixtures have been investigated to recover the valuable metal ions from the cathode material of spent Li-ion batteries. The cathodic active material (LiCoO2) collected from spent Li-ion batteries (LIBs) is dissolved in mild organic acids, iminodiacetic acid (IDA) and maleic acid (MA), to recover the metals. Almost complete dissolution occurred in slightly excess (than the stoichiometric requirement) of IDA or MA at 80°C for 6h, based on the Co and Li released. The reducing agent, ascorbic acid (AA), converts the dissolved Co(III)- to Co(II)-L (L=IDA or MA) thereby selective recovery of Co as Co(II)-oxalate is possible. The formation of Co(III)- and Co(II)-L is evident from the UV-Vis spectra of the dissolved solution as a function of dissolution time. Thus, the reductive-complexing dissolution mechanism is proposed here. These mild organic acids are environmentally benign unlike the mineral acids.
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Affiliation(s)
| | | | - Jayappa Manjanna
- Dept. of Chemistry, Rani Channamma University, Belagavi 591 156, India
| | - Sangita J Keny
- Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India
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Jung YH, Park HM, Kim DH, Park YC, Seo JH, Kim KH. Combination of high solids loading pretreatment and ethanol fermentation of whole slurry of pretreated rice straw to obtain high ethanol titers and yields. Bioresour Technol 2015; 198:861-866. [PMID: 26461793 DOI: 10.1016/j.biortech.2015.09.102] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 09/19/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
In cellulosic ethanol production using lignocellulose, an increase in biomass solids loading during the pretreatment process significantly affects the final ethanol titer and the production cost. In this study, pretreatment using rice straw at high solids loading (20% (w/v)) was evaluated, using maleic acid as a catalyst. After pretreatment at optimal conditions of 190°C, 20 min, and 0.2% or 5% (w/v) maleic acid, the highest enzymatic digestibility obtained was over 80%. Simultaneous saccharification and fermentation (SSF) of the whole slurry of pretreated rice straw in the presence of activated carbon to separate inhibitory compounds generated a high ethanol yield of 62.8%, based on the initial glucan in unpretreated rice straw. These findings suggest that high solids loading pretreatment using maleic acid and SSF of the whole slurry of pretreated rice straw can be combined to improve the process economics of ethanol production.
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Affiliation(s)
- Young Hoon Jung
- Department of Biotechnology, Graduate School, Korea University, Seoul 136-713, Republic of Korea
| | - Hyun Min Park
- Department of Biotechnology, Graduate School, Korea University, Seoul 136-713, Republic of Korea
| | - Dong Hyun Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul 136-713, Republic of Korea
| | - Yong-Cheol Park
- Department of Bio and Fermentation Convergence Technology, Kookmin University, Seoul 136-702, Republic of Korea
| | - Jin-Ho Seo
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea
| | - Kyoung Heon Kim
- Department of Biotechnology, Graduate School, Korea University, Seoul 136-713, Republic of Korea.
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Görduysus M, Küçükkaya S, Bayramgil NP, Görduysus MÖ. Evaluation of the effects of two novel irrigants on intraradicular dentine erosion, debris and smear layer removal. Restor Dent Endod 2015; 40:216-22. [PMID: 26295025 PMCID: PMC4534726 DOI: 10.5395/rde.2015.40.3.216] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 04/08/2015] [Indexed: 11/13/2022] Open
Abstract
Objectives To evaluate the effects of copolymer of acrylic acid and maleic acid (Poly[AA-co-MA]) and calcium hypochlorite (Ca(OCl)2) on root canal dentin using scanning electron microscope (SEM). Materials and Methods Twenty-four single-rooted teeth were instrumented and the apical and coronal thirds of each root were removed, leaving the 5 mm middle thirds, which were then separated into two pieces longitudinally. The specimens were randomly divided into six groups and subjected to each irrigant for 5 min as follows: G1, Ca(OCl)2; G2, Poly(AA-co-MA); G3, Ca(OCl)2 + Poly(AA-co-MA); G4, sodium hypochlorite (NaOCl); G5, ethylenediaminetetraacetic acid (EDTA); G6, NaOCl+EDTA. The specimens were prepared for SEM evaluation. Smear layer, debris and erosion scores were recorded by two blinded examiners. One image from G3 was analyzed with energy dispersive spectroscopy (EDS) on suspicion of precipitate formation. Data were analyzed using the Kruskal-Wallis and Dunn tests. Results G1 and G4 showed the presence of debris and smear layer and they were statistically different from G2, G3, G5 and G6 where debris and smear layer were totally removed (p < 0.05). In G1 and G4, erosion evaluation could not be done because of debris and smear layer. G2, G3 and G5 showed no erosion, and there was no significant difference between them. G6 showed severe erosion and was statistically different from G2, G3 and G5 (p < 0.05). EDS microanalysis showed the presence of Na, P, and Ca elements on the surface. Conclusions Poly(AA-co-MA) is effective in removing the smear layer and debris without causing erosion either alone or with Ca(OCl)2.
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Affiliation(s)
- Melahat Görduysus
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. ; RAK College of Dental Science, RAK Medical and Health Science University, Ras Al Khaimah, UAE
| | - Selen Küçükkaya
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | | | - Mehmet Ömer Görduysus
- Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. ; Department of Endodontics, Sharjah University Dental College, Sharjah, UAE
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Luo YS, Tsai HY, Chen HC, Wu C, Shen LC, Chung WS, Chiang SY, Wu KY. Study of urinary 2-{[2-(acetylamino-2-carboxyethyl]sulfanyl}butanedioic acid, a mercapturic acid of rats treated with maleic acid. Toxicol Lett 2015; 236:131-7. [PMID: 25997398 DOI: 10.1016/j.toxlet.2015.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/09/2015] [Accepted: 05/12/2015] [Indexed: 11/20/2022]
Abstract
Maleic anhydride was reported illegally adulterated into starch to prepare traditional foods for decades in Taiwan. Maleic acid (MA), hydrolyzed from maleic anhydride, could cause kidney damages to animals. The potential health effects due to long-term MA exposures through food consumption have been of great concerns. Assessment of the dietary MA exposures could be very difficult and complicated. One of the alternatives is to analyze an MA-specific biomarker to assess the daily total MA intake. Therefore, this paper aimed to study the mercapturic acid of MA, 2-{[2-(acetylamino)-2-carboxyethyl]sulfanyl}butanedioic acid (MAMA), with our newly-developed isotope-dilution online solid-phase extraction liquid chromatography tandem mass spectrometry (ID-SPE-LC-MS/MS) method. MAMA was first synthesized, purified, and characterized with NMR to reveal two diastereomers and used for developing the analytical method. The method was validated to reveal excellent sensitivity with a LOD at 16.3ng/mL and a LOQ at 20.6ng/mL and used to analyze MAMA in urine samples collected from Sprague-Dawley rats treated with a single dose of 0mg/kg, 6mg/kg, and 60mg/kg (n=5) of MA through gavage. Our results show dose-dependent increases in urinary MAMA contents, and 70% MAMA was excreted within 12h with no gender differences (p>0.05). A half life of urinary MAMA was estimated at 6.8h for rat. The formation of urinary MAMA validates it as a chemically-specific biomarker for current MA exposure. Future study of MA metabolism in vivo will elucidate mechanisms of MAMA formation, and analysis of this marker in epidemiology studies could help to shed light on the causal effects of MA on human.
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Ferrer-Luque CM, González-Castillo S, Ruiz-Linares M, Arias-Moliz MT, Rodríguez-Archilla A, Baca P. Antimicrobial residual effects of irrigation regimens with maleic acid in infected root canals. ACTA ACUST UNITED AC 2015; 22:1. [PMID: 25984506 PMCID: PMC4390086 DOI: 10.1186/s40709-015-0025-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 01/27/2015] [Indexed: 11/22/2022]
Abstract
Background The success of endodontic treatment depends largely on the control of microorganisms present in infected root canals. The aim of this study was to determine the residual antimicrobial activity of several final irrigation protocols with 7% maleic acid (MA) alone and combined with chlorhexidine (CHX), cetrimide (CTR) or both, in root canals infected with Enterococcus faecalis. Biofilms of E. faecalis were grown in uniradicular roots for 4 weeks. A total of 72 specimens were divided into 5 experimental groups according to the final irrigation regime used: Group 1: 2.5% NaOCl; Group 2: 7% MA; Group 3: 7% MA + 0.2% CTR; Group 4: 7% MA + 2% CHX; Group 5: 7% MA + 0.2% CTR + 2% CHX; and Control group: 0.9% saline solution. Twelve roots (2/group) that were instrumented and not infected served as negative or sterility controls. The proportion of ungrown samples over 60 days was evaluated using non-parametric Kaplan-Meier survival analysis. Differences among groups were tested using the log-rank test (p< 0.05). Results The association of MA with CHX and CHX + CTR as final irrigating solutions showed the best results, 5 and 4 samples out of 12, respectively, and without differences between them (p = 0.928), followed by 7% MA + 0.2% CTR with 7 out of 12. The 7% MA (11/12) group showed significant differences with respect to the groups in which MA was combined with CHX (p < 0.005) and CHX + CTR (p < 0.005). Conclusion Final irrigating solutions of 7% MA combined with 2% CHX or 2% CHX + 0.2% CTR were found to effectively improve antimicrobial root canal disinfection.
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Affiliation(s)
- Carmen María Ferrer-Luque
- Department of Dental Pathology and Therapeutics, School of Dentistry, University of Granada, Campus de Cartuja, Colegio Máximo s/n, Granada, Spain
| | | | - Matilde Ruiz-Linares
- Department of Paediatric Dentistry, School of Dentistry, University of Granada, Campus de Cartuja, Colegio Máximo s/n, Granada, Spain
| | | | - Alberto Rodríguez-Archilla
- Department of Oral Medicine, School of Dentistry, University of Granada, Campus de Cartuja, Colegio Máximo s/n, Granada, Spain.), Granada, Spain
| | - Pilar Baca
- Department of Preventive Dentistry, School of Dentistry, University of Granada, Campus de Cartuja, Colegio Máximo s/n, Granada, Spain
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Lin YC, Wang CC, Tung CW. An in silico toxicogenomics approach for inferring potential diseases associated with maleic acid. Chem Biol Interact 2014; 223:38-44. [PMID: 25239558 DOI: 10.1016/j.cbi.2014.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/25/2014] [Accepted: 09/05/2014] [Indexed: 10/24/2022]
Abstract
Maleic acid is a multi-functional chemical widely applied in the manufacturing of polymer products including food packaging. However, the contamination of maleic acid in modified starch has raised the concerns about the effects of chronic exposure to maleic acid on human health. This study proposed a novel toxicogenomics approach for inferring functions, pathways and diseases potentially affected by maleic acid on humans by using known interactions between maleic acid and proteins. Neuronal signal transmission and cell metabolism were identified to be most influenced by maleic acid in this study. The top disease categories inferred to be associated with maleic acid were mental disorder, nervous system diseases, cardiovascular diseases, and cancers. The results from the in silico analysis showed that maleic acid could penetrate the blood-brain barrier to affect the nervous system. Several functions and pathways were further analyzed and identified to give insights into the mechanisms of maleic acid-associated diseases. The toxicogenomics approach may offer both a better understanding of the potential risks of maleic-acid exposure to humans and a direction for future toxicological investigation.
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Affiliation(s)
- Ying-Chi Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan; Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chia-Chi Wang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan; Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan; Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan; National Environmental Health Research Center, National Health Research Institutes, Miaoli County, Taiwan.
| | - Chun-Wei Tung
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan; Ph.D. Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan; National Environmental Health Research Center, National Health Research Institutes, Miaoli County, Taiwan.
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Rehman SU, Islam N, Ahad S, Fatima SZ, Pandith AH. Preparation and characterization of 5-sulphosalicylic acid doped tetraethoxysilane composite ion-exchange material by sol-gel method. J Hazard Mater 2013; 260:313-322. [PMID: 23774782 DOI: 10.1016/j.jhazmat.2013.05.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 05/20/2013] [Accepted: 05/21/2013] [Indexed: 06/02/2023]
Abstract
In this manuscript, we report the preparation and characterization of sulphosalicylic doped tetraethoxysilane (SATEOS), composite material by sol-gel method as a new ion exchanger for the removal of Ni(II) from aqueous solution. The fine granular material was prepared by acid catalyzed condensation polymerization through sol-gel mechanism in the presence of cationic surfactant. The material has an ion exchange capacity of 0.64 mequiv./g(dry) for sodium ions, 0.60 mequiv./g(dry) for potassium ions, 1.84 mequiv./g(dry) for magnesium ions, 1.08 mequiv./g(dry) for calcium ions and 1.36 mequiv./g(dry) for strontium ions. Its X-ray diffraction studies suggest that it is crystalline in nature. The material has been characterized by SEM, IR, TGA and DTG so as to identify the various functional groups and ion exchange sites present in this material. Quantum chemical computations at DFT/B3LYP/6-311G (d,p) level on model systems were performed to substantiate the structural conclusions based ion instrumental techniques. Investigations into the elution behaviour, ion exchange reversibility and distribution capacities of this material towards certain environmentally hazardous metal ions are also performed. The material shows good chemical stability towards acidic conditions and exhibits fast elution of exchangeable H(+) ions under neutral conditions. This material shows remarkable selectivity for Ni(II) and on the basis of its Kd value (4×10(2) in 0.01M HClO4) some binary separations of Ni(II) from other metal ions are performed.
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Affiliation(s)
- Suhail-ul Rehman
- Department of Chemistry, University of Kashmir, Hazratbal, Srinagar 190 006, J&K, India
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Miller AJ, Call JE, Bowles BL. Sporostatic, Sporicidal, and Heat-Sensitizing Action of Maleic Acid against Spores of Proteolytic Clostridium botulinum. J Food Prot 1996; 59:115-120. [PMID: 31159008 DOI: 10.4315/0362-028x-59.2.115] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The antibotulinal potential of maleic acid was investigated in an uncured turkey product and model systems. There was a dose-related delay in neurotoxin detection, with no toxin developing after 40 days at 28°C with 500 or 1,500 Clostridium botulinum spores per g and 2% maleic acid. Anaerobic and aerobic microflora were suppressed by maleic acid, and pH remained constant during the incubation period. Sporicidal and sporostatic concentrations were 19.5 and 2.4 mM, respectively, in broth. The 8-day sporostatic levels were >5 and 2 mM for canned chicken and beef broths, respectively. Dipicolinic acid release was reduced by 50% with 0.25 mM maleic acid. Maleic acid also lowered spore thermal resistance at 80°C. These data indicate that maleic acid inactivates C. botulinum spores, delays spore outgrowth, and reduces thermal resistance.
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Affiliation(s)
- Arthur J Miller
- Eastern Regional Research Center, U.S. Department of Agriculture, Agricultural Research Service, 600 East Mermaid Lane, Philadelphia, Pennsylvania 19118 USA
| | - Jeffrey E Call
- Eastern Regional Research Center, U.S. Department of Agriculture, Agricultural Research Service, 600 East Mermaid Lane, Philadelphia, Pennsylvania 19118 USA
| | - Bobby L Bowles
- Eastern Regional Research Center, U.S. Department of Agriculture, Agricultural Research Service, 600 East Mermaid Lane, Philadelphia, Pennsylvania 19118 USA
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