1
|
Clematis D, Skolotneva E, Cademartori D, Panizza M. Impact of catalyst, chelating agent and light irradiation on electro-Fenton performance under not optimal conditions. Chemosphere 2023; 344:140408. [PMID: 37827461 DOI: 10.1016/j.chemosphere.2023.140408] [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: 06/30/2023] [Revised: 09/09/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
Electro-Fenton is a promising game-changer for distributed wastewater treatments for the removal of recalcitrant compounds that it is possible to find in industrial effluent and looking for a water reuse approach. This electrochemical advanced oxidation process (EAOPs) is able to provide fast removal of organic compounds, like dyes, due to the in-situ H2O2 production and its reaction with Fe2+ to form hydroxyl radicals. The literature clearly reports that this reaction reaches its optimum in acid conditions (pH = 3) and low catalyst concentrations [Fe2+<0.5 mM]. This paper wants to investigate the effects of the shifting from optimal conditions on the removal of reactive black 5 (RB5), treating solutions which contain a higher amount of catalyst and a less acid pH. Textile effluents usually contain also other metals able to act as catalyst for Fenton reaction, like copper. Here its activity has been investigated as well as the possible synergistic effect with Fe2+. The results confirm that copper can enhance RB5 removal, especially in those conditions critical for ferrous cation. In the second part, possible process modifications to overcome the issues introduced by unfavourable operating conditions (pH > 3 and Fe2+ > 0.5 mM) are considered, such as the usage of a chelating agent (EDTA) and the application of a light source. The results show the positive impact of these two system modifications highlighting the possibility to enlarge the application window of electro-Fenton systems.
Collapse
Affiliation(s)
- Davide Clematis
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy
| | - Ekaterina Skolotneva
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy
| | - Davide Cademartori
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy
| | - Marco Panizza
- University of Genoa, Department of Civil, Chemical and Environmental Engineering, Via All'Opera Pia 15, 16145, Genova, Italy.
| |
Collapse
|
2
|
De Silva YSK, Rajagopalan UM, Kadono H, Li D. The synergy of microplastics with the heavy metal zinc has resulted in reducing the toxic effects of zinc on lentil ( Lens culinaris) seed germination and seedling growth. Heliyon 2023; 9:e21464. [PMID: 38034784 PMCID: PMC10685156 DOI: 10.1016/j.heliyon.2023.e21464] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 10/14/2023] [Accepted: 10/21/2023] [Indexed: 12/02/2023] Open
Abstract
There is growing recognition of the impact of the rising presence of microplastics (MPs) on terrestrial plant growth and, in general, the terrestrial ecosystem. Simultaneously, there is growing heavy metal accumulation in agricultural lands at an astonishing rate owing to the overwhelming use of chemical fertilizers, herbicides, and weedicides. Thus, there is a need to investigate the synergetic effect of MPs along with heavy metals on the inducing combined toxicity. This study investigates effects at smaller exposure periods of a few hours using a novel optical imaging technique, Biospeckle Coherence Tomography. Biospeckle Optical Coherence Tomography (bOCT) is a novel optical imaging technique that we successfully demonstrated earlier in visualizing the internal activity of plants. Previous studies of authors using the bOCT technique have demonstrated its potential in the independent application of polyethylene microplastic (PEMPs) as well as zinc within 6 h after their treatments. The strong inhibitory effect of 100 mg L-1, Zn, and PEMPs alone on the germination of Lens culinaris could be visualized with bOCT. The current study demonstrated that against expectation, combined effects of Zn toxicity were reduced when combined with MPs. This is suggested due to the significant reduction of Zn uptake by the seedlings through the interaction of Zn and MPs in an aqueous solution. Mass-spectrometry results also indicate a reduced intake of Zn. Our findings suggest that PEMPs could be able to reduce the over-availability of Zn, thus mitigating the Zn toxicity on lentils.
Collapse
Affiliation(s)
- Y. Sanath K. De Silva
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama-shi, Saitama, 338-8570, Japan
- Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, University of Ruhuna, Hapugala, Galle, 80000, Sri Lanka
| | - Uma Maheswari Rajagopalan
- Department of Mechanical Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto City, Tokyo, 135-8548, Japan
| | - Hirofumi Kadono
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama-shi, Saitama, 338-8570, Japan
| | - Danyang Li
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama-shi, Saitama, 338-8570, Japan
| |
Collapse
|
3
|
Yoon YS, Hwang HJ, Kim JM, Chung KS, Jang SY, Heo SW, Lee SY, Kim SY, Song HA, Hong SJ, An HJ, Park SW, Im JJ, Oh DH, Lee AR, Lee KT. Antinociceptive and anti-inflammatory activity of DW-1021, the ionic complex of pelubiprofen and tramadol, in rodents. Biomed Pharmacother 2023; 163:114708. [PMID: 37121153 DOI: 10.1016/j.biopha.2023.114708] [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: 02/22/2023] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 05/02/2023] Open
Abstract
Although drugs such as acetaminophen, opioids, and nonsteroidal anti-inflammatory drugs (NSAIDs), are commonly used for pain management, the side effects of these drugs such as hepatotoxicity, nephrotoxicity, nausea, and vomiting, can not be neglected. Therefore, combinations of analgesics with different mechanisms raise the possibility of developing novel analgesics. Therefore, the aim of the present study was to evaluate whether DW-1021, the ionic complex of pelubiprofen (NSAID) and tramadol (opioid), has synergic antinociceptive and anti-inflammatory effects in nociceptive as well as inflammation-induced nociceptive models compared to pelubiprofen- or tramadol-only administration. Strong synergistic antinociceptive efficacy of DW-1021 was observed in the mouse writhing test and von Frey paw withdrawal threshold test in the carrageenan-induced rats. The hot plate test in mice and the Randall-Selitto mechanical paw pressure test in carrageenan-induced rats revealed that DW-1021 had a preferable effect on relieving pain to pelubiprofen, but not as much as tramadol. In the carrageenan-induced rats, DW-1021 had a more potent effect on reducing paw inflammation (paw volume, width, and thickness) via the suppression of PGE2 production than tramadol, but less than that of pelubiprofen. Taken together, our results suggest that the administration of DW-1021, a combination of pelubiprofen and tramadol, exerted a potent effect and can be used as a potential therapeutic agent for relieving pain and inflammation.
Collapse
Affiliation(s)
- Young-Seo Yoon
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Han-Jun Hwang
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jae-Min Kim
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Sook Chung
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seo-Yun Jang
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - So-Won Heo
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Su-Yeon Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Soo-Yeon Kim
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyeon-A Song
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seung-Jae Hong
- Department of Rheumatology, Kyung Hee University College of Medicine, Kyung Hee University Hospital, Seoul, Republic of Korea
| | - Hyo-Jin An
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sang-Wook Park
- Daewon Pharm. Co., Ltd., 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Republic of Korea
| | - Jhong-Jae Im
- Daewon Pharm. Co., Ltd., 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Republic of Korea
| | - Dong-Ho Oh
- Daewon Pharm. Co., Ltd., 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Republic of Korea
| | - Ah-Ram Lee
- Daewon Pharm. Co., Ltd., 520 Cheonhodae-ro, Gwangjin-gu, Seoul 04994, Republic of Korea
| | - Kyung-Tae Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea.
| |
Collapse
|
4
|
Gordobil O, Blažević N, Simonič M, Sandak A. Potential of lignin multifunctionality for a sustainable skincare: Impact of emulsification process parameters and oil-phase on the characteristics of O/W Pickering emulsions. Int J Biol Macromol 2023; 233:123561. [PMID: 36758754 DOI: 10.1016/j.ijbiomac.2023.123561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/23/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023]
Abstract
Colloidal lignin particles (CLPs) from softwood kraft lignin were evaluated as a multifunctional ingredient to prepare bio-based oil-in-water (O/W) Pickering emulsions. After a preliminary screening, three Pickering emulsions systems were formulated using orange, coconut, and paraffin oils, at varying concentration of CLPs, oil/water ratio, and by applying two-step homogenisation processes (rotor-stator homogenisation followed by ultrasonication). Ultrasonication as a second homogenisation step considerably enhanced the emulsification efficiency, generating emulsions with smaller droplet size and less polydisperse distribution. Furthermore, the effect of ultrasonication on the characteristics of emulsions and the stability of the systems was evaluated over time. The oil content and type, the concentration of CLPs, and the homogenisation methods significantly influenced the characteristics of the emulsions and drop size. Higher concentrations of oil and CLPs favoured the formation of the emulsion and contributed to higher physical stability after 120 days of monitoring. The in vitro Sun Protection Factor (SPF) results demonstrated that the incorporation of natural oils containing phenolic compounds in Pickering formulations improves the SPF value of emulsions, showing an interesting synergic effect between lignin particles and vegetable oils, which was not observed in the case of paraffin oil. Furthermore, the broad-spectrum sun blocker of Pickering emulsions was confirmed by the values of UVA/UVB between 0.74 and 0.90 and Cλ > 380.
Collapse
|
5
|
Wang G, Yu G, Chi T, Li Y, Zhang Y, Wang J, Li P, Liu J, Yu Z, Wang Q, Wang M, Sun S. Insights into the enhanced effect of biochar on cadmium removal in vertical flow constructed wetlands. J Hazard Mater 2023; 443:130148. [PMID: 36265377 DOI: 10.1016/j.jhazmat.2022.130148] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 07/11/2022] [Revised: 10/02/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Biochar has been increasingly applied in constructed wetlands (CWs) to remediate heavy metal (HM)-polluted water. Nevertheless, only few studies have elucidated the enhanced mechanism and potential synergies related to the HM removal from biochar-based CWs (BC-CWs) for HMs removal. This study used cadmium (Cd) as the target HM and added biochar into CWs to monitor physicochemical parameters, plant' physiological responses, substrate accumulation, and microbial metabolites and taxa. In comparison with the biochar-free CW (as CWC), a maximum Cd2+ removal of 99.7% was achieved in the BC-CWs, associated with stable physicochemical parameters. Biochar preferentially adsorbed the available Cd2+ and significantly accumulated Fe/Mn oxides-bond and the exchangeable Cd fraction. Moreover, biochar alleviated the lipid peroxidation (decreased by 36.4%) of plants, resulting in improved growth. In addition, extracellular polymeric substances were increased by 376.9-396.8 mg/L in BC-CWs than compared to CWC, and N and C cycling was enhanced through interspecific positive connectivity. In summary, this study explored comprehensively the performance and mechanism of BC-CWs in the treatment of Cd2+-polluted water, suggesting a promising approach to promote the plant-microbe-substrate synergies under HM toxicity.
Collapse
Affiliation(s)
- Guoliang Wang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Guanlong Yu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China.
| | - Tianying Chi
- CCCC-TDC Environmental Engineering Co., Ltd., Tianjin 300461, PR China
| | - Yifu Li
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Yameng Zhang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Jianwu Wang
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Peiyuan Li
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Jiaxin Liu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Zhi Yu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Qi Wang
- CCCC-TDC Environmental Engineering Co., Ltd., Tianjin 300461, PR China
| | - Miaomiao Wang
- CCCC-TDC Environmental Engineering Co., Ltd., Tianjin 300461, PR China
| | - Shiquan Sun
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| |
Collapse
|
6
|
Wang JL, Chen YC, Deng JJ, Mo ZQ, Zhang MS, Yang ZD, Zhang JR, Li YW, Dan XM, Luo XC. Synergic chitin degradation by Streptomyces sp. SCUT-3 chitinases and their applications in chitinous waste recycling and pathogenic fungi biocontrol. Int J Biol Macromol 2023; 225:987-96. [PMID: 36403764 DOI: 10.1016/j.ijbiomac.2022.11.161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/02/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022]
Abstract
The genus Streptomyces comprises the most important chitin decomposers in soil and revealing their chitinolytic machinery is beneficial for the conversion of chitinous wastes. Streptomyces sp. SCUT-3, a chitin-hydrolyzing and a robust feather-degrading bacterium, was isolated previously. The potential chitin-degrading enzymes produced by SCUT-3 were analyzed in the present study. Among these enzymes, three chitinases were successfully expressed in Pichia pastoris at comparatively high yields of 4.8 U/mL (SsExoChi18A), 11.2 U/mL (SsExoChi18B), and 17.8 U/mL (SsEndoChi19). Conserved motifs and constructive 3D structures of these three exo- and endochitinases were also analyzed. These chitinases hydrolyzed colloidal chitin to chitin oligomers. SsExoChi18A showed apparent synergic effects with SsEndoChi19 in colloidal chitin and shrimp shell hydrolysis, with an improvement of 29.3 % and 124.9 %, respectively. Compared with SsExoChi18B and SsEndoChi19, SsExoChi18A exhibited the strongest antifungal effects against four plant pathogens by inhibiting mycelial growth and spore germination. This study provided good candidates for chitinous waste-processing enzymes and antifungal biocontrol agents. These synergic chitin-degrading enzymes of SCUT-3 are good targets for its further genetical modification to construct super chitinous waste-degrading bacteria with strong abilities to hydrolyze both protein and chitin, thereby providing a direction for the future path of the chitinous waste recycling industry.
Collapse
|
7
|
Liu YQ, Guo ZY, Qiu ZY, Wang WW, Lin H, Zhao X, Dang JS. Defective hBN-Supported Fe 2N Single Cluster Catalyst for Active and Selective Electro-Reduction of Multiple CO to Propane: Theoretical Elucidation of Metal-Nonmetal Synergic Effects. ACS Appl Mater Interfaces 2022; 14:46657-46664. [PMID: 36194561 DOI: 10.1021/acsami.2c13154] [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] [Indexed: 06/16/2023]
Abstract
The present work introduces the multiple CO reduction toward C3 products promoted by a newly designed single cluster catalyst consisting of defective hBN and embedded dimerized Fe, by means of density functional theory calculations. We find the strong metal-support interactions give rise to the local strain and electron accumulation of the N coordinated with two metals and resultantly form a Fe2N active center. The metal-nonmetal synergic effect facilitates the coadsorption and C-C coupling of triple CO molecules and finally generates propane in a highly active and selective way.
Collapse
Affiliation(s)
- Yi-Qing Liu
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Zi-Yi Guo
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Zi-Yang Qiu
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Wei-Wei Wang
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
| | - Haiping Lin
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
| | - Xiang Zhao
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jing-Shuang Dang
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| |
Collapse
|
8
|
Huang Y, Zheng H, Hu X, Wu Y, Tang X, He Q, Peng S. Enhanced selective adsorption of lead(II) from complex wastewater by DTPA functionalized chitosan-coated magnetic silica nanoparticles based on anion-synergism. J Hazard Mater 2022; 422:126856. [PMID: 34399211 DOI: 10.1016/j.jhazmat.2021.126856] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [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: 04/16/2021] [Revised: 08/05/2021] [Accepted: 08/05/2021] [Indexed: 05/09/2023]
Abstract
Simultaneously removing heavy metal and dye from complex wastewater is of great significance to industrial wastewater treatment. Herein, a novel magnetic adsorbent, DTPA-modified chitosan-coated magnetic silica nanoparticle (FFO@Sil@Chi-DTPA), was successfully prepared and used to enhance the Pb(II) selective adsorption from multi-metal wastewater based on anion-synergism. In the competitive experiment conducted in a multi-ion solution, the type of selective adsorption of metals was changed by the adsorbents before and after amidation, in which FFO@Sil@Chi-DTPA exhibited an excellent selectively for capturing Pb(II), while FFO@Sil@Chi demonstrated highly selective adsorption of silver. More importantly, the selective adsorption of Pb(II)S by FFO@Sil@Chi-DTPA was enhanced from 111.71 to 268.01 mg g-1 when the coexisting MB concentrations ranged from 0 to 100 mg L-1 at pH 6.0. In the Pb(II)-MB binary system, Pb(II) and MB exhibited a synergistic effect, in which the presence of MB strengthened the adsorption effect of Pb(II) due to the sulfonic acid groups in MB molecules that create new specific sites for Pb(II) adsorption, while MB adsorption was also enhanced by the presence of Pb(II). This work provides a new strategy for exploring novel adsorbents that can enhance the selective removal of heavy metal in complex wastewater based on anion-synergism.
Collapse
Affiliation(s)
- Yaoyao Huang
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Huaili Zheng
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China.
| | - Xuebin Hu
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Yuyang Wu
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Xiaohui Tang
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Qiang He
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Shangyu Peng
- College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| |
Collapse
|
9
|
Upreti S, Pandey SC, Bisht I, Samant M. Evaluation of the target-specific therapeutic potential of herbal compounds for the treatment of cancer. Mol Divers 2021; 26:1823-1835. [PMID: 34240331 DOI: 10.1007/s11030-021-10271-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 04/17/2021] [Accepted: 07/02/2021] [Indexed: 11/25/2022]
Abstract
Cancer is among one of the most fatal diseases leading to millions of death around the globe. Chemotherapy is the most popular conventional approach for the treatment of cancer. However, this is usually associated with various side effects and puts the patients under extreme physical and mental stress. Besides, there are increasing concerns about drug resistance. Thus, to surmount these limitations, there is a need to explore some alternative treatments. Studies related to plant-derived compounds are crucial in the search for safer and more efficient treatments. Plants and their associated secondary metabolites have been a revolutionary approach in the field of cancer treatment, as they give answers to almost all the constraints faced by synthetic drugs. Various plants and associated secondary metabolites display a great prospective as cytotoxic anticancer agents due to their specific interference with validated drug targets, such as inhibitors of mitosis, topoisomerase I and II inhibitor, DNA interactive agent, protein kinase inhibitors, inhibitors of DNA synthesis. In this review, the therapeutic potential of various natural compounds and their derivatives are presented based on their molecular targets. These herbal compounds and their derivatives could provide a rich resource for novel anticancer drug development.
Collapse
Affiliation(s)
- Shobha Upreti
- Cell and Molecular Biology Laboratory, Department Of Zoology, Kumaun University, SSJ Campus, Almora, Uttarakhand, India
| | - Satish Chandra Pandey
- Cell and Molecular Biology Laboratory, Department Of Zoology, Kumaun University, SSJ Campus, Almora, Uttarakhand, India
| | - Ila Bisht
- Cell and Molecular Biology Laboratory, Department Of Zoology, Kumaun University, SSJ Campus, Almora, Uttarakhand, India
| | - Mukesh Samant
- Cell and Molecular Biology Laboratory, Department Of Zoology, Kumaun University, SSJ Campus, Almora, Uttarakhand, India.
| |
Collapse
|
10
|
Nizer WSDC, Ferraz AC, Moraes TDFS, Lima WG, Santos JPD, Duarte LP, Ferreira JMS, de Brito Magalhães CL, Vieira-Filho SA, Andrade ACDSP, Rodrigues RAL, Abrahão JS, Magalhães JCD. Pristimerin isolated from Salacia crassifolia (Mart. Ex. Schult.) G. Don. (Celastraceae) roots as a potential antibacterial agent against Staphylococcus aureus. J Ethnopharmacol 2021; 266:113423. [PMID: 33007390 DOI: 10.1016/j.jep.2020.113423] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 08/11/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pristimerin is a triterpenoid considered the main component of Salacia crassifolia extracts. This terpene has shown promising antitumor, anti-inflammatory, and antimicrobial effects. Likewise, S. crassifolia has been used in traditional medicine to treat cancer and as an antimicrobial and anti-inflammatory agent. AIM OF THE STUDY This study aimed to evaluate the antibacterial activity of the hexane extract of Salacia crassifolia roots (HER) and its isolate, pristimerin, against pathogenic bacteria. MATERIALS AND METHODS First, we evaluated the spectrum of action of HER and pristimerin by the determination of the minimum inhibitory concentration (MIC) and the minimal bactericidal concentration (MBC). Subsequently, we analyzed the time-kill curve of these plant-derived compounds against Staphylococcus aureus. Then, we examined their mode of action by three different assays: the crystal violet methodology, the release of intracellular material, and transmission electron microscopy methods (TEM). Finally, we evaluated the effect of HER and pristimerin on the pre-formed biofilm of S. aureus by the crystal violet assay, the synergistic effect by the checkerboard method, the cytotoxicity against Vero cells, and the in silico activity using the online software PASS. RESULTS HER and pristimerin presented a narrow spectrum of action against Gram-positive bacteria (MIC 0.195-25 μg/mL), and their primary mode of action is the alteration of membrane permeability of S. aureus. Our results show that the compounds disrupted the pre-formed biofilm of S. aureus in a dose-dependent manner. Furthermore, HER and pristimerin presented a significant synergic effect after the combination with well-known antibiotics, which was associated with the ability of these phytomedicines to change membrane permeability. Regarding the cytotoxic effect, the selective index (SI) of HER ranged from 0.37 to 11.86, and the SI of pristimerin varied from 0.24 to 30.87, according to the bacteria tested. CONCLUSIONS Overall, HER and pristimerin showed a promising antibacterial effect in vitro through the alteration of membrane permeability of S. aureus.
Collapse
Affiliation(s)
- Waleska Stephanie da Cruz Nizer
- Department of Chemistry, Biotechnology, and Bioprocess Engineering, Universidade Federal de São João del-Rei, Ouro Branco, MG, Brazil; Carleton University, Ottawa, ON, Canada.
| | - Ariane Coelho Ferraz
- Institute of Exact and Biological Sciences, Biological Science Research Nucleus, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.
| | | | - William Gustavo Lima
- Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, MG, Brazil.
| | | | - Lucienir Pains Duarte
- Department of Chemistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Jaqueline Maria Siqueira Ferreira
- Laboratory of Medical Microbiology, Campus Centro Oeste Dona Lindu, Universidade Federal de São João del-Rei, Divinópolis, MG, Brazil.
| | - Cintia Lopes de Brito Magalhães
- Institute of Exact and Biological Sciences, Biological Science Research Nucleus, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.
| | | | | | - Rodrigo Araújo Lima Rodrigues
- Institute of Exact and Biological Sciences, Biological Science Research Nucleus, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Department of Microbiology, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Jonatas Santos Abrahão
- Department of Microbiology, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - José Carlos de Magalhães
- Department of Chemistry, Biotechnology, and Bioprocess Engineering, Universidade Federal de São João del-Rei, Ouro Branco, MG, Brazil.
| |
Collapse
|
11
|
Cordeiro AP, Feuser PE, Figueiredo PG, Cunha ESD, Martinez GR, Machado-de-Ávila RA, Rocha MEM, Araújo PHHD, Sayer C. In vitro synergic activity of diethyldithiocarbamate and 4-nitrochalcone loaded in beeswax nanoparticles against melanoma (B16F10) cells. Mater Sci Eng C Mater Biol Appl 2020; 120:111651. [PMID: 33545819 DOI: 10.1016/j.msec.2020.111651] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/03/2020] [Accepted: 10/13/2020] [Indexed: 11/27/2022]
Abstract
The use of nanoparticles as drug delivery systems to simultaneously carry several therapeutic agents is an attractive idea to create new synergic treatments and to develop the next generation of cancer therapies. Therefore, the goal of this study was the simultaneous encapsulation of a hydrophilic drug, sodium diethyldithiocarbamate (DETC), and a hydrophobic drug, 4-nitrochalcone (4NC), in beeswax nanoparticles (BNs) to evaluate the in vitro synergic activity of this combination against melanoma (B16F10) cells. BNs were prepared by water/oil/water double emulsion in the absence of organic solvents. Transmission electron microscopy imaging and dynamic light scattering analyses indicated the formation of BNs with a semispherical shape, average diameter below 250 nm, relatively narrow distributions, and negative zeta potential. The double emulsion technique proved to be effective for the simultaneous encapsulation of DETC and 4NC with efficiencies of 86.2% and 98.7%, respectively, and this encapsulation did not affect the physicochemical properties of the BNs. DETC and 4NC loaded in BNs exhibited a higher cytotoxicity toward B16F10 cells than free 4NC and DETC. This simultaneous encapsulation led to a synergic effect of DETC and 4NC on B16F10 cells, decreasing the cell viability from 46% (DETC BNs) and 54% (4NC BNs) to 64% (DETC+4NC BNs). Therefore, the IC50 of DETC+4NC was also lower than that of either when individually encapsulated, and that of free DETC or 4NC. Therefore, DETC and 4NC were efficiently simultaneously encapsulated in BNs and this drug combination was able to generate an in vitro synergic therapeutic effect on B16F10 cells.
Collapse
Affiliation(s)
- Arthur Poester Cordeiro
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, SC, Brazil
| | - Paulo Emílio Feuser
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, SC, Brazil
| | | | | | | | | | | | | | - Claudia Sayer
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, SC, Brazil.
| |
Collapse
|
12
|
Tang Y, Zhou W, Sun S, Du X, Han Y, Shi W, Liu G. Immunotoxicity and neurotoxicity of bisphenol A and microplastics alone or in combination to a bivalve species, Tegillarca granosa. Environ Pollut 2020; 265:115115. [PMID: 32806413 DOI: 10.1016/j.envpol.2020.115115] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [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: 02/29/2020] [Revised: 06/16/2020] [Accepted: 06/25/2020] [Indexed: 05/24/2023]
Abstract
Though invertebrates are one of the largest groups of animal species in the sea and exhibit robust immune and neural responses that are crucial for their health and survival, the potential immunotoxicity and neurotoxicity of the most produced chemical bisphenol A (BPA), especially in conjunction with microplastics (MPs), still remain poorly understood in marine invertebrate species. Therefore, the impacts of exposure to BPA and MPs alone or in combination on a series of immune and neural biomarkers were investigated in the invertebrate bivalve species blood clam (Tegillarca granosa). Evident immunotoxicity as indicated by alterations in hematic indexes was observed after two weeks of exposure to BPA and MPs at environmentally realistic concentrations. The expression of four immune-related genes from the NFκB signaling pathway was also found to be significantly suppressed by the BPA and MP treatment. In addition, exposure to BPA and MPs led to an increase in the in vivo contents of three key neurotransmitters (GABA, DA, and ACh) but a decrease in the expression of genes encoding modulatory enzymes and receptors for these neurotransmitters, implying the evident neurotoxicity of BPA and MPs to blood clam. Furthermore, the results demonstrated that the toxic impacts exerted by BPA were significantly aggravated by the co-presence of MPs, which may be due to interactions between BPA and MPs as well as those between MPs and clam individuals.
Collapse
Affiliation(s)
- Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Shuge Sun
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Xueying Du
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
| |
Collapse
|
13
|
Sasaki K, Hayashi Y, Nakamura T, Guo B, Tian Q. Stabilization of borate by hot isostatic pressing after co-precipitation with hydroxyapatite using MAP. Chemosphere 2020; 254:126860. [PMID: 32957280 DOI: 10.1016/j.chemosphere.2020.126860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 09/29/2019] [Revised: 04/11/2020] [Accepted: 04/19/2020] [Indexed: 06/11/2023]
Abstract
Boric acid is one of the most mobile inorganic contaminant species in nature due to its pKa of 9.23. Co-precipitation of borate with hydroxyapatite (HAp: Ca5(PO4)3OH) facilitates the simultaneous removal of borate with co-existing oxoanions in natural waters. The cost of phosphate is an impediment to industrialize the co-precipitation of borate with HAp for treatment of geothermal waters. In the present work, an inexpensive industrial by-product of magnesium ammonium phosphate (MAP) derived from sewage sludge, was examined as a phosphate source. MAP includes 89% pure magnesium ammonium phosphate, resulting in better performance than the pure chemical form of NH4H2PO4, because Mg2+ and Al3+ (trace elements in MAP product) play roles in enhancing the removal rate of borate and lowering the equilibrium borate concentration. These ions have a good affinity with phosphate to nucleate crystal seeds independently of powdery Ca sources. To reduce the bulky volume of solid residues, hot isostatic pressing (HIP) was applied. There is structural water in HAp; therefore, the greatest volume reduction was achieved with 78.3 ± 2.0% (n = 3). Additionally, a synergic effect to suppress the released borate, greater than the sequential combination of calcination and cold isostatic pressing was accomplished in the toxicity contents leaching procedure (TCLP) test. This is not due to larger crystal sizes alone, but it is derived from boron stabilization in HAp at an atomic level by the synergic effect of heating and pressing simultaneously.
Collapse
Affiliation(s)
- Keiko Sasaki
- Department of Earth Resource Engineering, Kyushu University, Fukuoka, 819-0395, Japan.
| | - Yoshikazu Hayashi
- Department of Earth Resource Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | | | - Binglin Guo
- Department of Earth Resource Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Quanzhi Tian
- Department of Earth Resource Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| |
Collapse
|
14
|
Chen J, Dai S, Liu L, Maitz MF, Liao Y, Cui J, Zhao A, Yang P, Huang N, Wang Y. Photo-functionalized TiO 2 nanotubes decorated with multifunctional Ag nanoparticles for enhanced vascular biocompatibility. Bioact Mater 2020; 6:45-54. [PMID: 32817912 PMCID: PMC7417617 DOI: 10.1016/j.bioactmat.2020.07.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 06/27/2020] [Revised: 07/13/2020] [Accepted: 07/17/2020] [Indexed: 11/30/2022] Open
Abstract
Titanium dioxide (TiO2) has a long history of application in blood contact materials, but it often suffers from insufficient anticoagulant properties. Recently, we have revealed the photocatalytic effect of TiO2 also induces anticoagulant properties. However, for long-term vascular implant devices such as vascular stents, besides anticoagulation, also anti-inflammatory, anti-hyperplastic properties, and the ability to support endothelial repair, are desired. To meet these requirements, here, we immobilized silver nanoparticles (AgNPs) on the surface of TiO2 nanotubes (TiO2-NTs) to obtain a composite material with enhanced photo-induced anticoagulant property and improvement of the other requested properties. The photo-functionalized TiO2-NTs showed protein-fouling resistance, causing the anticoagulant property and the ability to suppress cell adhesion. The immobilized AgNPs increased the photocatalytic activity of TiO2-NTs to enhances its photo-induced anticoagulant property. The AgNP density was optimized to endow the TiO2-NTs with anti-inflammatory property, a strong inhibitory effect on smooth muscle cells (SMCs), and low toxicity to endothelial cells (ECs). The in vivo test indicated that the photofunctionalized composite material achieved outstanding biocompatibility in vasculature via the synergy of photo-functionalized TiO2-NTs and the multifunctional AgNPs, and therefore has enormous potential in the field of cardiovascular implant devices. Our research could be a useful reference for further designing of multifunctional TiO2 materials with high vascular biocompatibility. Photo-functionalized TiO2NTs@Ag composites showed excellent vascular compatibility. UV irradiation greatly improved the anticoagulant properties of the composites. Moderately loaded AgNPs strongly inhibited SMCs and MAs, but weakly inhibited ECs.
Collapse
Affiliation(s)
- Jiang Chen
- National Engineering Research Center for Biomaterials, Sichuan University, No.29 of Wangjiang Road, Wuhou District, Chengdu, Sichuan, 610064, China.,Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Sheng Dai
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Luying Liu
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Manfred F Maitz
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China.,Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, Dresden, 01069, Germany
| | - Yuzhen Liao
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Jiawei Cui
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Ansha Zhao
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Ping Yang
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Nan Huang
- Institute of Biomaterials and Surface Engineering, Key Lab. for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, NO.111 of the North 1st Section of Second Ring Road, Chengdu, 610031, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, No.29 of Wangjiang Road, Wuhou District, Chengdu, Sichuan, 610064, China
| |
Collapse
|
15
|
He Z, Weng W. Synergic effects in the assessment of multi-hazard coupling disasters: Fires, explosions, and toxicant leaks. J Hazard Mater 2020; 388:121813. [PMID: 31843413 DOI: 10.1016/j.jhazmat.2019.121813] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
The study of multi-hazard coupling disasters involves various challenges. One of the toughest challenges is analyzing the interactions between incidents, known as "synergic effects." As its research object, this paper takes multi-hazard coupling disasters involving fire, explosions, and toxicant leaks in hazardous chemicals scenarios. It aims to quantitatively analyze the synergic effects in such environments, taking into account the amplification of the severity of the incidents and the delay in the fire brigade intervention. A method based on Monte Carlo simulation and damage analysis was applied to assess the hazard of multi-hazard coupling disasters and demonstrate the impacts of synergic effects. The Monte Carlo simulations presented the cumulative distribution functions of the severities of incidents. To examine the effectiveness of the assessment method, a case study was conducted of the severe fire and explosion that occurred in a chemical plant in Yancheng, China, in 2019. The results show that the currently suggested safety distance from the chemical plant is insufficient due to the failure to take into account the synergic effects of multi-hazard coupling disasters. The influence radius of incidents involving hazardous chemicals may be further than 1500 m, instead of the 500 m safety distance required by the current regulations. The description of synergic effects in this paper may provide guidance in dealing with other multi-hazard coupling disasters.
Collapse
Affiliation(s)
- Zhichao He
- Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, China; Beijing Key Laboratory of Comprehensive Emergency Response Science, Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing, 10084, China.
| | - Wenguo Weng
- Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, China; Beijing Key Laboratory of Comprehensive Emergency Response Science, Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing, 10084, China.
| |
Collapse
|
16
|
Karuppiah A, Rajan R, Ramanathan M, Nagarajan A. Cytotoxicity and Synergistic Effect of Biogenically Synthesized Ternary Therapeutic Nano Conjugates Comprising Plant Active Principle, Silver and Anticancer Drug on MDA-MB-453 Breast Cancer Cell Line. Asian Pac J Cancer Prev 2020; 21:195-204. [PMID: 31983184 PMCID: PMC7294018 DOI: 10.31557/apjcp.2020.21.1.195] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Indexed: 01/11/2023] Open
Abstract
Drug delivery through biogenically synthesized silver nanoparticles (AgNPs) in cancer treatment is exerted by smaller size entailing high surface area and synergistic effects of embedded biomolecules. In this study, prepared ternary conjugates of silver with plant active compound and anticancer drug towards reducing the dose through synergy, rendered by Electrostatic Attraction (EA) of functionalized drug on to the surface of biogenically synthesized AgNPs. The biogenic synthesis resulted in particles of nanometer range as well as serving reducing and capping agents. The cytotoxicity and synergistic effect of ternary therapeutic nano conjugates evaluated using MDA-MB-453 breast cancer cells were found to be superior than Doxorubicin (Dox). Quantitative HPTLC analysis showed 57.22 % inhibition by Dox-AP-AgNPs at a concentration of 2.5 µg/mL of Andrographolide and 0.95 µg/mL of Dox validating synergistic effect of the ternary conjugate.
Collapse
Affiliation(s)
- Arjunan Karuppiah
- Department of Pharmaceutics, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| | - Ravikumar Rajan
- Department of Pharmacology, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| | - Muthiah Ramanathan
- Department of Pharmacology, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| | - Arumugam Nagarajan
- Department of Pharmacognosy, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| |
Collapse
|
17
|
Vinesh V, Shaheer ARM, Neppolian B. Reduced graphene oxide (rGO) supported electron deficient B-doped TiO 2 (Au/B-TiO 2/rGO) nanocomposite: An efficient visible light sonophotocatalyst for the degradation of Tetracycline (TC). Ultrason Sonochem 2019; 50:302-310. [PMID: 30270008 DOI: 10.1016/j.ultsonch.2018.09.030] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/15/2018] [Accepted: 09/21/2018] [Indexed: 05/19/2023]
Abstract
Incorporation of electron deficient boron atoms along with Au doped TiO2 in the presence of rGO support was synthesized by hydrothermal method and demonstrated for the sonophotocatalytic degradation of TC under visible light illumination. The successful incorporation of electron deficient boron atoms and Au on TiO2 was considerably enhanced the optical absorption towards visible region due to the formation acceptor energy levels below to the conduction band of TiO2 by boron doping and surface plasmonic effect of Au. Moreover, formation of acceptor energy levels and introduction of reduced graphene oxide (rGO) support significantly improved the electron-hole pair separation and transportation which were supported by UV-vis-DRS, photo-current and photoluminescence measurements. The individual effect of photocatalysis and ultrasound for the TC degradation was found to be 45% and 12%, respectively. Importantly, a complete degradation (100%) of TC was achieved with 1.3 folds synergistic effect when ultrasound coupled with photocatalysis in 1 h. The enhanced degradation activity was mainly attributed to combined effect of rapid electron-hole pair separation facilitated by electron deficient B-atoms and rGO support and physical forces of ultrasound as well. In addition, ∼74% of Total Organic Carbon (TOC) removal was achieved within 1 h which further confirmed the effective demineralization of TC by the Au/B-TiO2/rGO composite.
Collapse
Affiliation(s)
- V Vinesh
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur 603203, Chennai, Tamilnadu, India
| | - A R M Shaheer
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur 603203, Chennai, Tamilnadu, India
| | - B Neppolian
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur 603203, Chennai, Tamilnadu, India.
| |
Collapse
|
18
|
Cunha FA, Cunha MDCSO, da Frota SM, Mallmann EJJ, Freire TM, Costa LS, Paula AJ, Menezes EA, Fechine PBA. Biogenic synthesis of multifunctional silver nanoparticles from Rhodotorula glutinis and Rhodotorula mucilaginosa: antifungal, catalytic and cytotoxicity activities. World J Microbiol Biotechnol 2018; 34:127. [PMID: 30084085 DOI: 10.1007/s11274-018-2514-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/01/2018] [Indexed: 01/14/2023]
Abstract
Silver nanoparticles (AgNPs) have several technological applications and may be synthetized by chemical, physical and biological methods. Biosynthesis using fungi has a wide enzymatic range and it is easy to handle. However, there are few reports of yeasts with biosynthetic ability to produce stable AgNPs. The purpose of this study was to isolate and identify soil yeasts (Rhodotorula glutinis and Rhodotorula mucilaginosa). After this step, the yeasts were used to obtain AgNPs with catalytic and antifungal activity evaluation. Silver Nanoparticles were characterized by UV-Vis, DLS, FTIR, XRD, EDX, SEM, TEM and AFM. The AgNPs produced by R. glutinis and R. mucilaginosa have 15.45 ± 7.94 nm and 13.70 ± 8.21 nm (average ± SD), respectively, when analyzed by TEM. AgNPs showed high catalytic capacity in the degradation of 4-nitrophenol and methylene blue. In addition, AgNPs showed high antifungal activity against Candida parapsilosis and increase the activity of fluconazole (42.2% for R. glutinis and 29.7% for R. mucilaginosa), while the cytotoxicity of AgNPs was only observed at high concentrations. Finally, two yeasts with the ability to produce AgNPs were described and these particles showed multifunctionality and can represent a technological alternative in many different areas with potential applications.
Collapse
Affiliation(s)
- Francisco A Cunha
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil.,Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Maria da C S O Cunha
- Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Sabrina M da Frota
- Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Eduardo J J Mallmann
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil
| | - Tiago M Freire
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil
| | - Luelc S Costa
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa Em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brazil
| | - Amauri J Paula
- Solid-Biological Interface Group (SolBIN), Departamento de Física, Universidade Federal do Ceará, P.O. Box 6030, Fortaleza, CE, 60455-900, Brazil
| | - Everardo A Menezes
- Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Pierre B A Fechine
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil.
| |
Collapse
|
19
|
Ahn S, Song TJ, Park SU, Jeon S, Kim J, Oh JY, Jang J, Hong S, Song MA, Shin HS, Jung YR, Park HJ. Effects of a combination treatment of KD5040 and L-dopa in a mouse model of Parkinson's disease. BMC Complement Altern Med 2017; 17:220. [PMID: 28424060 PMCID: PMC5395961 DOI: 10.1186/s12906-017-1731-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 04/07/2017] [Indexed: 12/31/2022]
Abstract
Background Although the dopamine precursor L-3, 4-dihydroxyphenylalanine (l-dopa) remains the gold standard pharmacological therapy for patients with Parkinson’s disease (PD), long-term treatment with this drug has been known to result in several adverse effects, including l-dopa-induced dyskinesia (LID). Recently, our group reported that KD5040, a modified herbal remedy, had neuroprotective effects in both in vitro and in vivo models of PD. Thus, the present study investigated whether KD5040 would have synergistic effects with l-dopa and antidyskinetic effects caused by l-dopa as well. Methods The effects of KD5040 and l-dopa on motor function, expression levels of substance P (SP) and enkephalin (ENK) in the basal ganglia, and glutamate content in the motor cortex were assessed using behavioral assays, immunohistochemistry, Western blot analyses, and liquid chromatography tandem mass spectrometry in a mouse model of PD induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). In addition, the antidyskinetic effects of KD5040 on pathological movements triggered by l-dopa were investigated by testing abnormal involuntary movements (AIMs) and measuring the activations of FosB, cAMP-dependent phosphor protein of 32 kDa (DARPP-32), extracellular signal-regulated kinases (ERK), and cAMP response element-binding (CREB) protein in the striatum. Results KD5040 synergistically improved the motor function when low-dose l-dopa (LL) was co-administered. In addition, it significantly reversed MPTP-induced lowering of SP, improved ENK levels in the basal ganglia, and ameliorated abnormal reduction in glutamate content in the motor cortex. Furthermore, KD5040 significantly lowered AIMs and controlled abnormal levels of striatal FosB, pDARPP-32, pERK, and pCREB induced by high-dose l-dopa. Conclusions KD5040 lowered the effective dose of l-dopa and alleviated LID. These findings suggest that KD5040 may be used as an adjunct therapy to enhance the efficacy of l-dopa and alleviate its adverse effects in patients with PD.
Collapse
|
20
|
Cerciello A, Del Gaudio P, Granata V, Sala M, Aquino RP, Russo P. Synergistic effect of divalent cations in improving technological properties of cross-linked alginate beads. Int J Biol Macromol 2017; 101:100-106. [PMID: 28322959 DOI: 10.1016/j.ijbiomac.2017.03.077] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 12/19/2016] [Revised: 01/19/2017] [Accepted: 03/14/2017] [Indexed: 01/09/2023]
Abstract
Gelling solution parameters are some of the most important variables in ionotropic gelation and consequently influence the technological characteristics of the product. To date, only a few studies have focused on the simultaneous use of multiple cations as gelling agents. With the aim to deeply explore this possibility, in this research we investigated the effect of two divalent cations (Ca2+ and Zn2+) on alginate beads formation and properties. Alginate beads containing prednisolone (P) as model drug were prepared by prilling technique. The main critical variables of the ionotropic gelation process i.e. composition of the aqueous feed solutions (sodium alginate and prednisolone concentration) and cross-linking conditions (Ca2+, Zn2+ or Ca2++Zn2+), were studied. The obtained beads were characterized and their in vitro release performances were assessed in conditions simulating the gastrointestinal environment. Results evidenced a synergistic effect of the two cations, affecting positively both the encapsulation efficiency and the ability of the alginate polymeric matrix to control the drug release. A Ca2+/Zn2+ ratio of 4:1, in fact, exploited the Ca2+ ability of establish quicker electrostatic interactions with guluronic groups of alginate and the Zn2+ ability to establish covalent-like bonds with carboxylate groups of both guluronic and mannuronic moieties of alginate.
Collapse
Affiliation(s)
- Andrea Cerciello
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, SA, Italy; PhD Program in Drug Discovery and Development, University of Salerno, I-84084 Fisciano, SA, Italy
| | | | - Veronica Granata
- Department of Physics "E.R. Caianiello", University of Salerno, I-84084 Fisciano, SA, Italy
| | - Marina Sala
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, SA, Italy
| | - Rita P Aquino
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, SA, Italy
| | - Paola Russo
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, SA, Italy.
| |
Collapse
|
21
|
Sarveazad A, Babahajian A, Bakhtiari M, Soleimani M, Behnam B, Yari A, Akbari A, Yousefifard M, Janzadeh A, Amini N, Agah S, Fallah A, Joghataei MT. The combined application of human adipose derived stem cells and Chondroitinase ABC in treatment of a spinal cord injury model. Neuropeptides 2017; 61:39-47. [PMID: 27484347 DOI: 10.1016/j.npep.2016.07.004] [Citation(s) in RCA: 29] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 07/10/2016] [Accepted: 07/10/2016] [Indexed: 01/09/2023]
Abstract
BACKGROUND Although stem cell therapy has become a major focus as a new option for management of spinal cord injury (SCI), its effectiveness should be promoted. In this study, we investigated the effects of co-administrating human adipose-derived stem cells (hADSCs) and Chondroitinase ABC (ChABC) in a rat model of spinal cord injury. MATERIAL AND METHODS hADSCs derived from superficial layer of abdominal adipose tissue were used to treat a contusion-induced SCI. Animals were randomly allocated to five equal groups including sham (only laminectomy), SCI (SCI+vehicle injection), hADSCs (1×10⁶ hADSCs/10μl intra-spinal injection), ChABC (10μl of 100U/ml ChABC intra-spinal injection injection), and hADSCs+ChABC. Basso, Beattie and Bresnahan tests were used to evaluate locomotor function. 8weeks after treatment, cavity size, myelination, cell differentiation (neuron and astrocyte), and chondroitin sulfate amount were analyzed. RESULTS hADSC transplanted animals, ChABC injected animals (P<0.001), and hADSC+ChABC treated rats (P<0.001) displayed significant motor improvement compared to SCI group. Combination therapy of hADSCs and ChABC led to greater locomotor recovery compared to using hADSCs (P<0.001) or ChABC (P<0.01) alone. Spinal cords in the combined and single therapy groups had cavities filled with myelinated areas and less chondroitin sulfate content in comparison with the control group (P<0.001). hADSCs expressed GFAP, B III tubulin and Map2. CONCLUSION Combination therapy with ChABC and hADSCs exhibits more significant functional recovery than single therapy using either. This result may be applicable in selection of the best therapeutic strategy for SCI.
Collapse
Affiliation(s)
- Arash Sarveazad
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran; Cellular and Molecular Research Center, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Asrin Babahajian
- Liver & Digestive Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mehrdad Bakhtiari
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mansoureh Soleimani
- Cellular and Molecular Research Center, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Babak Behnam
- Department of Medical Genetics and Molecular Biology, Iran University of Medical Sciences (IUMS), Tehran, Iran; NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH, Bethesda, Maryland, USA Office of the Clinical Director, NHGRI, National Institutes of Health, Bethesda, MD, USA
| | - Abazar Yari
- Department of Anatomy, Faculty of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Abolfazl Akbari
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mahmoud Yousefifard
- Physiology Research Center and Department of Physiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Atousa Janzadeh
- Physiology Research Center and Department of Physiology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Naser Amini
- Department of Neuroscience, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahram Agah
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Taghi Joghataei
- Cellular and Molecular Research Center, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
22
|
Fang P, He B, Shi M, Zhu Y, Bo P, Zhang Z. Crosstalk between exercise and galanin system alleviates insulin resistance. Neurosci Biobehav Rev 2015; 59:141-6. [PMID: 26542124 DOI: 10.1016/j.neubiorev.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 08/21/2015] [Accepted: 09/07/2015] [Indexed: 02/07/2023]
Abstract
Studies have demonstrated that aerobic exercise can enhance insulin sensitivity, however, the precise mechanism for this outcome is not entirely identified. Emerging evidences point out that exercise can upregulate galanin protein and mRNA expression, resulting in improvement of insulin sensitivity via an increase in translocation of glucose transporter 4 and subsequent glucose uptake in myocytes and adipocytes of healthy and type 2 diabetic rats, which may be blocked by galanin antagonist. In return, galanin can exert the exercise-protective roles to prevent excessive movement of skeletal muscle and to accelerate exercise trauma repair in exercise-relative tissues. Studies also implicated that combination of aerobic exercise and activation of galanin system may make more significant improvement in insulin sensitivity than that of either one did. These suggest that galanin system is essential for physical activity to alleviate insulin resistance, namely, the beneficial effect of physical activity on glucose uptake is at least partly mediated by galanin system. Besides, co-treatment with galanin and exercise is an effective therapeutic strategy for reducing insulin resistance.
Collapse
|
23
|
Osés SM, Pascual-Maté A, Fernández-Muiño MA, López-Díaz TM, Sancho MT. Bioactive properties of honey with propolis. Food Chem 2015; 196:1215-23. [PMID: 26593609 DOI: 10.1016/j.foodchem.2015.10.050] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [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: 08/01/2015] [Revised: 10/07/2015] [Accepted: 10/11/2015] [Indexed: 12/25/2022]
Abstract
Nowadays, propolis is used as an innovative preservative and as a bioactive food supplement. Due to its bitter and astringent flavour, propolis is hardly accepted by consumers. The aim of this study was to obtain a likeable food product made with honey and propolis, whose antimicrobial, antioxidant and anti-inflammatory properties were enhanced in comparison with those of the base honeys used. 0.1%, 0.3% and 0.5% soft propolis extracts were added to honeys and the products that most appealed to the users were subjected to further research. Total phenolics, flavonoids, ABTS free radical and hydroxyl radicals scavenging and anti-inflammatory activities increased in all mixtures. Antimicrobial activity of the combined products showed synergic effects, resulting in higher results than those of the base honeys and propolis extracts. Therefore, honeys enriched with small amounts of propolis extracts are promising functional foods.
Collapse
Affiliation(s)
- S M Osés
- Department of Biotechnology and Food Science, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - A Pascual-Maté
- Department of Biotechnology and Food Science, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - M A Fernández-Muiño
- Department of Biotechnology and Food Science, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - T M López-Díaz
- Department of Food Hygiene and Food Technology, University of León, Campus de Vegazana, s/n, 24071 León, Spain
| | - M T Sancho
- Department of Biotechnology and Food Science, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| |
Collapse
|
24
|
Zhang C, Jiang S, Li K, Wang M, Zhu R, Sun X, Wang Q, Wang S. The triplet state of tanshinone I and its synergic effect on the phototherapy of cancer cells with curcumin. Spectrochim Acta A Mol Biomol Spectrosc 2015; 150:181-186. [PMID: 26046496 DOI: 10.1016/j.saa.2015.05.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 01/10/2015] [Revised: 05/06/2015] [Accepted: 05/09/2015] [Indexed: 06/04/2023]
Abstract
The excited triplet state of tanshinone I (Tan I) extracted from the traditional Chinese medicine Salvia miltiorrhiza Bunge was characterized by laser flash photolysis. The synergic effect of Tan I on the phototherapy of cancer cells with curcumin (Cur) was also investigated by MTT assay because the excited energy transfer from the triplet state of Tan I ((3)Tan I(∗)) to Cur occurred. At the same time, the characteristic absorption spectra of (3)Tan I(∗) were recorded, and its molar absorption coefficient and rate constants for several excited energy transfers were obtained. The photo-therapeutic effect of Cur is enhanced by combination with Tan I.
Collapse
Affiliation(s)
- Chenchen Zhang
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China
| | - Shan Jiang
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China
| | - Kun Li
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China
| | - Mei Wang
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China
| | - Rongrong Zhu
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China; Research Center for Translational Medicine at East Hospital, Tongji University, Shanghai, China
| | - Xiaoyu Sun
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China
| | - Qingxiu Wang
- Research Center for Translational Medicine at East Hospital, Tongji University, Shanghai, China.
| | - ShiLong Wang
- Tenth People's Hospital, School of Life Science and Technology, Tongji University, Shanghai, PR China; Research Center for Translational Medicine at East Hospital, Tongji University, Shanghai, China.
| |
Collapse
|
25
|
Li Z, Cao J, Huang K, Hong Y, Li C, Zhou X, Xie N, Lai F, Shen F, Chen C. Alkaline pretreatment and the synergic effect of water and tetralin enhances the liquefaction efficiency of bagasse. Bioresour Technol 2015; 177:159-168. [PMID: 25485736 DOI: 10.1016/j.biortech.2014.11.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 09/07/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
Bagasse liquefaction (BL) in water, tetralin, and water/tetralin mixed solvents (WTMS) was investigated, and effects of tetralin content in WTMS, temperature, and alkaline pretreatment of bagasse on liquefaction efficiency were studied. At 300°C, bagasse conversion in WTMS with tetralin content higher than 50 wt% was 86-87 wt%, whereas bagasse conversion in water or tetralin was 67 wt% or 84 wt%, respectively. Because the solid conversion from liquefaction in WTMS with tetralin content higher than 50 wt% was always higher than that in water or tetralin at temperatures between 250 and 300°C, a synergic effect between water and tetralin is suggested. Alkaline pretreatment of bagasse resulted in significantly higher conversion and heavy oil yield from BL in water or WTMS. The effect of deoxygenation by the present liquefaction method is demonstrated by lower oxygen contents (16.01-19.59 wt%) and higher heating values (31.9-34.8 MJ/kg) in the produced oils.
Collapse
Affiliation(s)
- Zhixia Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China.
| | - Jiangfei Cao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China; State Key Laboratory of Non-Food Biorefinery Enzymolysis, National Engineering Research Center for Non-Food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi 530007, China
| | - Kai Huang
- State Key Laboratory of Non-Food Biorefinery Enzymolysis, National Engineering Research Center for Non-Food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi 530007, China
| | - Yaming Hong
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Cunlong Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Xinxin Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Ning Xie
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Fang Lai
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Fang Shen
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Congjin Chen
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| |
Collapse
|
26
|
Soberón JR, Sgariglia MA, Dip Maderuelo MR, Andina ML, Sampietro DA, Vattuone MA. Antibacterial activities of Ligaria cuneifolia and Jodina rhombifolia leaf extracts against phytopathogenic and clinical bacteria. J Biosci Bioeng 2014; 118:599-605. [PMID: 24894684 DOI: 10.1016/j.jbiosc.2014.04.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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: 08/20/2013] [Revised: 04/22/2014] [Accepted: 04/24/2014] [Indexed: 11/24/2022]
Abstract
Six plant extracts prepared from Ligaria cuneifolia and Jodina rhombifolia were screened for their potential antimicrobial activities against phytopathogens and clinically standard reference bacterial strains. Bioautography and broth microdilution methods were used to study samples antibacterial activities against 7 bacterial strains. The minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of samples were attained. An antibacterial activity guided isolation and identification of active compounds was carried out for L. cuneifolia methanolic extract (LCME). Both methanolic and aqueous extracts from L. cuneifolia showed inhibitory activities against phytopathogenic bacteria, with MICs ranging from 2.5 to 156 μg mL(-1) for LCME and 5 mg mL(-1) for the aqueous extract. None of the three J. rhombifolia extracts showed significant antibacterial activities against phytopathogenic strains (MIC > 5 mg mL(-1)), except for the aqueous extracts against Pseudomonas syringae (MIC = 312 μg mL(-1)). Only LCME showed bactericidal activities against phytopathogenic strains (MBCs = 78 μg mL(-1)). The LCME exhibited significant inhibitory activity against reference clinical strains: Escherichia coli (MIC = 156 μg mL(-1)) and Staphylococcus aureus (MIC = 78 μg mL(-1), MBC = 312 μg mL(-1)). LCME active compounds were identified as flavonol mono and diglycosides, and gallic acid. The antibacterial activity of purified compounds was also evaluated. A synergistic effect against S. aureus was found between gallic acid and a quercetin glycoside. Hence, anti-phytopathogenic bacteria potential compounds isolated from L. cuneifolia could be used as an effective source against bacterial diseases in plants.
Collapse
Affiliation(s)
- José R Soberón
- Laboratorio de Biología de Agentes Bioactivos y Fitopatógenos (LABIFITO), Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Universidad Nacional de Tucumán, Ayacucho 491, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina.
| | - Melina A Sgariglia
- Laboratorio de Biología de Agentes Bioactivos y Fitopatógenos (LABIFITO), Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Universidad Nacional de Tucumán, Ayacucho 491, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| | - María R Dip Maderuelo
- Universidad Nacional de Tucumán, Ayacucho 491, T4000INI San Miguel de Tucumán, Tucumán, Argentina
| | - María L Andina
- Laboratorio de Biología de Agentes Bioactivos y Fitopatógenos (LABIFITO), Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| | - Diego A Sampietro
- Laboratorio de Biología de Agentes Bioactivos y Fitopatógenos (LABIFITO), Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Universidad Nacional de Tucumán, Ayacucho 491, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| | - Marta A Vattuone
- Laboratorio de Biología de Agentes Bioactivos y Fitopatógenos (LABIFITO), Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Universidad Nacional de Tucumán, Ayacucho 491, T4000INI San Miguel de Tucumán, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Ciudad Autónoma de Buenos Aires, Argentina
| |
Collapse
|
27
|
Lee J, Lee D, Choi H, Kim HH, Kim H, Hwang JS, Lee DG, Kim JI. Synthesis and antimicrobial activity of cysteine-free coprisin nonapeptides. Biochem Biophys Res Commun 2014; 443:483-8. [PMID: 24321546 DOI: 10.1016/j.bbrc.2013.11.125] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 11/27/2013] [Indexed: 11/24/2022]
Abstract
Coprisin is a 43-mer defensin-like peptide from the dung beetle, Copris tripartitus. CopA3 (LLCIALRKK-NH₂), a 9-mer peptide containing a single free cysteine residue at position 3 of its sequence, was derived from the α-helical region of coprisin and exhibits potent antibacterial and anti-inflammatory activities. The single cysteine implies a tendency for dimerization; however, it remains unknown whether this cysteine residue is indispensible for CopA3's antimicrobial activity. To address this issue, in the present study we synthesized eight cysteine-substituted monomeric CopA3 analogs and two dimeric analogs, CopA3 (Dimer) and CopIK (Dimer), and evaluated their antimicrobial effects against bacteria and fungi, as well as their hemolytic activity toward human erythrocytes. Under physiological conditions, CopA3 (Mono) exhibits a 6/4 (monomer/dimer) molar ratio in HPLC area percent, indicating that its effects on bacterial strains likely reflect a CopA3 (Mono)/CopA3 (Dimer) mixture. We also report the identification of CopW, a new cysteine-free nonapeptide derived from CopA3 that has potent antimicrobial activity with virtually no hemolytic activity. Apparently, the cysteine residue in CopA3 is not essential for its antimicrobial function. Notably, CopW also exhibited significant synergistic activity with ampicillin and showed more potent antifungal activity than either wild-type coprisin or melittin.
Collapse
|
28
|
Zhao YP, Zhu WW, Wei XY, Fan X, Cao JP, Dou YQ, Zong ZM, Zhao W. Synergic effect of methanol and water on pine liquefaction. Bioresour Technol 2013; 142:504-509. [PMID: 23765001 DOI: 10.1016/j.biortech.2013.05.028] [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: 03/09/2013] [Revised: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 06/02/2023]
Abstract
Pine liquefaction (PL) and re-liquefaction of its liquefaction residues in sub- and supercritical methanol, water or methanol/water mixed solvents (MWMSs) was investigated. The results show that isometric MWMS has the highest synergic effect on PL. Moreover, the total yield of bio-oil (BO) and conversion from pine and its residue both liquefied in the MWMS were obvious higher than those from PL in methanol (water) and re-liquefaction of its residue in water (methanol), suggesting that the interaction between the two solvents is responsible for synergic effect. This approach facilitates understanding the mechanism for biomass liquefaction in mixed solvents and developing efficient utilization process of biomass.
Collapse
Affiliation(s)
- Yun-Peng Zhao
- Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining & Technology, Xuzhou, Jiangsu 221116, China.
| | | | | | | | | | | | | | | |
Collapse
|