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Miyazaki M, Arisaka C, Nakagawara A, Sasaki N, Takahashi H, Takagi T, Amii H, Sonoyama M. Thermodynamic study on hydrated bilayers of ether-linked phosphatidylcholines with terminal perfluorobutyl group. Biochim Biophys Acta Biomembr 2024; 1866:184261. [PMID: 38101595 DOI: 10.1016/j.bbamem.2023.184261] [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: 07/24/2023] [Revised: 11/01/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Novel terminally perfluorobutyl group-containing ether-linked phosphatidylcholines with different alkyl chain lengths (di-O-F4-Cn-PCs, n = 14,16 and 18) were developed as possible materials for stable liposomes aiming at applications of structural and functional analyses of membrane proteins. Differential scanning calorimetric investigations of the thermotropic transition of hydrated di-O-F4-Cn-PC bilayers demonstrated that the transition temperature of every di-O-F4-Cn-PC decreases by ~20 °C compared to their corresponding non-fluorinated PCs, di-O-Cn-PCs. With the elongation of the hydrophobic chain, on the other hand, the transition enthalpy (ΔH) and entropy (ΔS) increased in a linear manner. Comparison of ΔH and ΔS values against the net hydrocarbon chain length between di-O-F4-Cn-PCs and di-O-Cn-PCs strongly suggests that in the thermotropic transition of the di-O-F4-Cn-PC membrane, the perfluorobutyl segments undergo very limited structural changes; therefore, the hydrocarbon segments are mainly responsible for the phase transition.
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Affiliation(s)
- Masaya Miyazaki
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Chika Arisaka
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Ai Nakagawara
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Nanako Sasaki
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Hiroshi Takahashi
- Division of Pure and Applied Science, Graduate School of Science and Technology, Gunma University, Maebashi, Gunma 371-8510, Japan.
| | - Toshiyuki Takagi
- Cellular and Molecular Biotechnology Research Institute, AIST, Tsukuba, Ibaraki 305-8565, Japan.
| | - Hideki Amii
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan; Gunma University Initiative for Advanced Research (GIAR), Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Masashi Sonoyama
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan; Gunma University Initiative for Advanced Research (GIAR), Gunma University, Kiryu, Gunma 376-8515, Japan; Gunma University Center for Food Science and Wellness (GUCFW), Gunma University, Kiryu, Gunma 376-8515, Japan.
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52
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Ding X, Wei C, Wei Y, Liu P, Wang D, Wang Q, Chen X, Song X. Field test of thermally activated persulfate for remediation of PFASs co-contaminated with chlorinated aliphatic hydrocarbons in groundwater. Water Res 2024; 249:120993. [PMID: 38086203 DOI: 10.1016/j.watres.2023.120993] [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: 05/10/2023] [Revised: 11/19/2023] [Accepted: 12/07/2023] [Indexed: 01/03/2024]
Abstract
The co-occurrence of per- and polyfluoroalkyl substances (PFASs) and chlorinated aliphatic hydrocarbons (CAHs) in groundwater has drawn increased attention in recent years. No studies have been conducted concerning the oxidative degradation of PFASs and/or CAHs by in situ thermally activated persulfate (TAP) in groundwater, primarily due to the difficulty in cost-effectively achieving the desired temperature in the field. In this study, the effects and mechanisms of PFASs degradation by in situ TAP at a site with PFASs and CAHs co-contaminants were investigated. The target temperature of 40.0-70.0 °C was achieved in groundwater, and persulfate was effectively distributed in the demonstration area - the combination of which ensured the degradation of PFASs and CAHs co-contaminants by in situ TAP. It was demonstrated that the reductions of perfluoroalkyl carboxylic acids (PFCAs) concentration in all monitoring wells were in the range of 43.7 %-66.0 % by in situ TAP compared to those maximum rebound values in groundwater, whereas no effective perfluoroalkane sulfonic acids (PFSAs) degradation was observed. The conversion of perfluoroalkyl acids (PFAAs) precursors was one of the main factors leading to the increase in PFCAs concentrations in groundwater during in situ TAP. CAHs were effectively degraded in most monitoring wells, and furthermore, no inhibitory effects of CAHs and Cl- on the degradation of PFASs were observed due to the presence of sufficient persulfate. Additionally, there were significant increases in SO42- concentrations and reductions of pH values in groundwater due to in situ TAP, warranting their long-term monitoring in groundwater. The integrated field and laboratory investigations demonstrated that the reductions in PFCAs and CAHs concentrations can be achieved by the oxidative degradation of in situ TAP.
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Affiliation(s)
- Xiaoyan Ding
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
| | - Changlong Wei
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yunxiao Wei
- BCEG Environmental Remediation Co., Ltd., Beijing 210093, China
| | - Peng Liu
- BCEG Environmental Remediation Co., Ltd., Beijing 210093, China
| | - Dixiang Wang
- BCEG Environmental Remediation Co., Ltd., Beijing 210093, China
| | - Qing Wang
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xing Chen
- China Construction Eighth Engineering Division Corp., Ltd, Shanghai 200122, China
| | - Xin Song
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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53
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Hatzianestis I, Parinos C, Chourdaki S, Plakidi E, Abualnaja Y, Hoteit I, Churchill J, Papageorgiou D, Papadopoulos VP, Alshehri Y, Pavlidou A. Organic contaminants levels, distribution and risk assessment in Jeddah marine coastal zone sediments. Mar Pollut Bull 2024; 199:115926. [PMID: 38128252 DOI: 10.1016/j.marpolbul.2023.115926] [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: 09/13/2023] [Revised: 12/07/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023]
Abstract
Herein, various organic contaminants were determined in surface sediments collected from the Jeddah coastal zone, Saudi Arabia, to assess their levels, origin and probable toxic effects on marine organisms. High hydrocarbons concentrations, indicative of an enhanced pollutant burden, were recorded in the Jeddah Lagoon (mean value 4100 mg/kg for total aliphatic hydrocarbons (∑AHC) and 5800 μg/kg for total polycyclic aromatic hydrocarbons (∑PAH)), whereas mean values in Mena Jeddah were 258 mg/kg for ∑AHC and 615 μg/kg for ∑PAH. By using molecular diagnostic ratios/indices and applying Positive Matrix Factorization, petroleum related pollution seems to predominate in Jeddah lagoons, whereas carcinogenic contaminants of pyrolytic origin were dominant in Mena Jedda. Additionally, municipal wastewaters were identified as a major source of pollution in Jeddah lagoons. Comparison of the concentrations of individual PAHs and polychlorinated biphenyls with sediment quality guidelines indicates that, despite their high total values, adverse biological effects are unlikely to occur.
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Affiliation(s)
- I Hatzianestis
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece.
| | - C Parinos
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - S Chourdaki
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - E Plakidi
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - Y Abualnaja
- Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal, Jeddah 23955-6900, Saudi Arabia.
| | - I Hoteit
- Climate Change Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - J Churchill
- Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
| | - D Papageorgiou
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - V P Papadopoulos
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
| | - Y Alshehri
- National Center for Environmental Compliance, Riyadh 13241-3000, Saudi Arabia
| | - A Pavlidou
- Institute of Oceanography, Hellenic Centre for Marine Research (H.C.M.R.), 46.7 Km Athens-Sounio av., Mavro Lithari, 19013 Anavyssos, Attiki, Greece
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Gao L, Zhang W, Zhang L, Gromova B, Chen G, Csizmadia E, Cagle C, Nastasio S, Ma Y, Bonder A, Patwardhan V, Robson SC, Jiang S, Longhi MS. Silencing of aryl hydrocarbon receptor repressor restrains Th17 cell immunity in autoimmune hepatitis. J Autoimmun 2024; 143:103162. [PMID: 38142533 PMCID: PMC10981568 DOI: 10.1016/j.jaut.2023.103162] [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] [Received: 09/28/2023] [Revised: 11/20/2023] [Accepted: 12/12/2023] [Indexed: 12/26/2023]
Abstract
Th17-cells play a key role in the pathogenesis of autoimmune hepatitis (AIH). Dysregulation of Th17-cells in AIH is linked to defective response to aryl-hydrocarbon-receptor (AhR) activation. AhR modulates adaptive immunity and is regulated by aryl-hydrocarbon-receptor-repressor (AHRR), which inhibits AhR transcriptional activity. In this study, we investigated whether defective Th17-cell response to AhR derives from aberrant AHRR regulation in AIH. Th17-cells, obtained from the peripheral blood of AIH patients (n = 30) and healthy controls (n = 30) were exposed to AhR endogenous ligands, and their response assessed in the absence or presence of AHRR silencing. Therapeutic effects of AHRR blockade were tested in a model of Concanavalin-A (Con-A)-induced liver injury in humanized mice. AHRR was markedly upregulated in AIH Th17-cells, following exposure to l-kynurenine, an AhR endogenous ligand. In patients, silencing of AHRR boosted Th17-cell response to l-kynurenine, as reflected by increased levels of CYP1A1, the main gene controlled by AhR; and decreased IL17A expression. Blockade of AHRR limited the differentiation of naïve CD4-cells into Th17 lymphocytes; and modulated Th17-cell metabolic profile by increasing the levels of uridine via ATP depletion or pyrimidine salvage. Treatment with 2'-deoxy-2'-fluoro-d-arabinonucleic acid (FANA) oligonucleotides to silence human AHRR in vivo, reduced ALT levels, attenuated lymphocyte infiltration on histology, and heightened frequencies of regulatory immune subsets in NOD/scid/gamma mice, reconstituted with human CD4 cells, and exposed to Con-A. In conclusion, blockade of AHRR in AIH restores Th17-cell response to AHR, and limits Th17-cell differentiation through generation of uridine. In vivo, silencing of AHRR attenuates liver damage in NOD/scid/gamma mice. Blockade of AHRR might therefore represent a novel therapeutic strategy to modulate effector Th17-cell immunity and restore homeostasis in AIH.
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Affiliation(s)
- Li Gao
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China.
| | - Wei Zhang
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China.
| | - Lina Zhang
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; School of Arts and Sciences, Tufts University, Medford, MA, USA.
| | - Barbora Gromova
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia.
| | - Guanqing Chen
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Eva Csizmadia
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Cortney Cagle
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Silvia Nastasio
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA, USA.
| | - Yun Ma
- Institute of Liver Studies, School of Immunology & Microbial Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK.
| | - Alan Bonder
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Vilas Patwardhan
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Simon C Robson
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Sizun Jiang
- Center for Virology and Vaccine Research, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Maria Serena Longhi
- Department of Anesthesia, Critical Care & Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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55
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Salam LB. Diverse hydrocarbon degradation genes, heavy metal resistome, and microbiome of a fluorene-enriched animal-charcoal polluted soil. Folia Microbiol (Praha) 2024; 69:59-80. [PMID: 37450270 DOI: 10.1007/s12223-023-01077-5] [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: 05/13/2023] [Accepted: 07/09/2023] [Indexed: 07/18/2023]
Abstract
Environmental compartments polluted with animal charcoal from the skin and hide cottage industries are rich in toxic heavy metals and diverse hydrocarbon classes, some of which are carcinogenic, mutagenic, and genotoxic, and thus require a bio-based eco-benign decommission strategies. A shotgun metagenomic approach was used to decipher the microbiome, hydrocarbon degradation genes, and heavy metal resistome of a microbial consortium (FN8) from an animal-charcoal polluted site enriched with fluorene. Structurally, the FN8 microbial consortium consists of 26 phyla, 53 classes, 119 orders, 245 families, 620 genera, and 1021 species. The dominant phylum, class, order, family, genus, and species in the consortium are Proteobacteria (51.37%), Gammaproteobacteria (39.01%), Bacillales (18.09%), Microbulbiferaceae (11.65%), Microbulbifer (12.21%), and Microbulbifer sp. A4B17 (19.65%), respectively. The microbial consortium degraded 57.56% (28.78 mg/L) and 87.14% (43.57 mg/L) of the initial fluorene concentration in 14 and 21 days. Functional annotation of the protein sequences (ORFs) of the FN8 metagenome using the KEGG GhostKOALA, KofamKOALA, NCBI's conserved domain database, and BacMet revealed the detection of hydrocarbon degradation genes for benzoate, aminobenzoate, polycyclic aromatic hydrocarbons (PAHs), chlorocyclohexane/chlorobenzene, chloroalkane/chloroalkene, toluene, xylene, styrene, naphthalene, nitrotoluene, and several others. The annotation also revealed putative genes for the transport, uptake, efflux, and regulation of heavy metals such as arsenic, cadmium, chromium, mercury, nickel, copper, zinc, and several others. Findings from this study have established that members of the FN8 consortium are well-adapted and imbued with requisite gene sets and could be a potential bioresource for on-site depuration of animal charcoal polluted sites.
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Affiliation(s)
- Lateef Babatunde Salam
- Department of Biological Sciences, Microbiology unit, Elizade University, Ilara-Mokin, Ondo State, Nigeria.
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56
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Santos GKN, Navarro DMDAF, Maia ACD. Cuticular lipid profiles of selected species of cyclocephaline beetles (Melolonthidae, Cyclocephalini). Bull Entomol Res 2024; 114:124-133. [PMID: 38268108 DOI: 10.1017/s0007485323000664] [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] [Indexed: 01/26/2024]
Abstract
Neotropical cyclocephaline beetles, a diverse group of flower-loving insects, significantly impact natural and agricultural ecosystems. In particular, the genus Cyclocephala, with over 350 species, displays polymorphism and cryptic complexes. Lacking a comprehensive DNA barcoding framework, accessible tools for species differentiation are needed for research in taxonomy, ecology, and crop management. Moreover, cuticular hydrocarbons are believed to be involved in sexual recognition mechanisms in these beetles. In the present study we examined the cuticular chemical profiles of six species from the genus Cyclocephala and two populations of Erioscelis emarginata and assessed their efficiency in population, species, and sex differentiation. Overall we identified 74 compounds in cuticular extracts of the selected taxa. Linear alkanes and unsaturated hydrocarbons were prominent, with ten compounds between them explaining 85.6% of species dissimilarity. Although the cuticular chemical profiles efficiently differentiated all investigated taxa, only C. ohausiana showed significant cuticular profile differences between sexes. Our analysis also revealed two E. emarginata clades within a larger group of 'Cyclocephala' species, but they were not aligned with the two studied populations. Our research underscores the significance of cuticular lipid profiles in distinguishing selected cyclocephaline beetle species and contemplates their potential impact as contact pheromones on sexual segregation and speciation.
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Affiliation(s)
- Geanne Karla N Santos
- Secretaria Executiva de Meio Ambiente de Paulista (SEMA), Prefeitura Municipal do Paulista, Paulista, 53401-441, Brazil
- Department of Fundamental Chemistry, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, Recife, 50740-560, Brazil
| | - Daniela Maria do Amaral F Navarro
- Department of Fundamental Chemistry, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, Recife, 50740-560, Brazil
| | - Artur Campos D Maia
- Department of Zoology, Centro de Biociências, Universidade Federal de Pernambuco, Recife PE, 50670-901, Brazil
- Laboratory of Sciences for the Environment, University of Corsica, UMR 6134 SPE, Ajaccio, France
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58
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Chen X, Mu S, Luo Y. Removal of total petroleum hydrocarbons from oil-based drilling cuttings by a heat activation persulfate-based process. Environ Technol 2024; 45:835-844. [PMID: 36152295 DOI: 10.1080/09593330.2022.2128894] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 07/16/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Oil-based drilling cuttings (OBDC) are typical hazardous wastes generated during shale gas extraction. In this study, two persulfate-based advanced oxidation processes (AOPs), heat/PMS and heat/PDS, have been used to treat OBDC. The results showed that for the heat/PMS process, within a certain range, the oxidant dosage, temperature, and reaction time were significantly positively correlated with the degree of total petroleum hydrocarbon (TPH) removal. When these parameters were increased from their initial values to 3.57 mmol/g, 70°C, and 80 min, respectively, TPH removal rates increased significantly, by 20.95%, 18.68%, and 16.41%, respectively. However, further increases in these parameters had little effect on the TPH removal rate. Similar observations were made for the heat/PDS process. There are other differences between the two processes, including that the heat/PDS process required less oxidant to reach an effective activation state than the heat/PMS process, but required a higher temperature and a longer reaction time. Fourier-transform infrared spectrometry and gas chromatography-mass spectrometry have shown that both processes could effectively remove the light components of linear paraffins contained in OBDC. The heat/PMS process performed significantly better than the heat/PDS process in removing aromatic hydrocarbons and long-chain alkanes. Scanning electron microscopy, energy-dispersive spectrometry, and X-ray diffraction analysis implied that the elemental and mineral compositions of OBDC were not significantly modified by reaction in the heat/PMS and heat/PDS processes. This study may provide theoretical support for the technological development of heat activation and persulfate-based AOPs to remove TPH from OBDC.
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Affiliation(s)
- Xinglong Chen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Shiqi Mu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Yuanfeng Luo
- Sichuan Academy of Environmental Policy and Planning, Department of Ecology and Environment of Sichuan Province, Chengdu, People's Republic of China
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59
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Chen Y, Hu K, Chen Y, Zhang T, Zhang W. Preparation and modification mechanism study of microwave-treated crumb rubber and waste engine oil-modified asphalt. Environ Sci Pollut Res Int 2024; 31:12483-12498. [PMID: 38231330 DOI: 10.1007/s11356-023-31144-w] [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] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/16/2023] [Indexed: 01/18/2024]
Abstract
The objective of this study was to characterize the performance of waste engine oil (WEO) and microwave-treated crumb rubber (CR)-modified asphalt (WEO-MCRA) and analyze the modification mechanism. The viscosity and dynamic shear rheological (DSR) tests were carried out to evaluate the viscoelasticity property of WEO-MCRA. The storage stability and fluorescence microscope (FM) tests were used to characterize the compatibility of the components. The Fourier transform infrared spectroscopy (FTIR) and molecular dynamic simulation were introduced to analyze the change of function groups and modification mechanism. The results demonstrated that introducing Wt.20% CR treated with microwave and Wt.6% WEO obtained a lower viscosity, excellent storage stability, and satisfactory elasticity properties of asphalt. The morphology of modifiers presented a thread-like structure microscopic with the range of WEO content Wt.3%-Wt.6%. Molecular dynamic simulations revealed that the aromatic may be intensively absorbed by CR and increase the likelihood of phase separation. WEO reduced the binding energy of CR to aromatic from 178.0 to 151.5 kcal/mol, which will contribute to the disaggregation of CR clusters. The diffusion coefficient shows a more obvious decrease with the addition of WEO and microwave treatment, which will benefit the stability of the asphalt. This study can provide a reference for the recycling of CR and WEO.
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Affiliation(s)
- Yan Chen
- College of Civil Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Kui Hu
- College of Civil Engineering, Henan University of Technology, Zhengzhou, 450001, China.
| | - Yujing Chen
- College of Civil Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Taoli Zhang
- College of Civil Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Wengang Zhang
- School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo, 255000, China
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60
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Nisar J, Mir MS, Vivek. Exploring the potential of waste plastic-modified asphalt: a systematic review of blending ratios, mixing conditions, and rheological properties. Environ Sci Pollut Res Int 2024; 31:11507-11528. [PMID: 38206466 DOI: 10.1007/s11356-023-31806-9] [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: 07/05/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024]
Abstract
In the present study, a systematic literature review (SLR) is conducted to collect, compile, and summarize the findings of previous studies in a meaningful and systematic way. This review focuses on the ideal blending ratios, mixing parameters, and the physical, thermal, and rheological performance of waste plastic-modified asphalt. It highlights the most significant research results about the challenges like phase separation, low-temperature performance, and workability for waste plastic-modified asphalt and progress in this domain. The results point out that the use of chemical and physical additives can help in the reduction of phase separation. Furthermore, this paper debates the aging characteristics and it was seen that the integration of waste plastic in asphalt has shown to slow down the aging process of the binder. The review article put forward details of various field projects across the globe utilizing waste plastic. The review concludes by presenting key findings, identifying research gaps, and suggesting future directions to advance the knowledge and to fully comprehend the possible application of waste plastic-modified bitumen in sustainable road construction.
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Affiliation(s)
- Jasim Nisar
- Department of Civil Engineering, National Institute of Technology Srinagar, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India.
| | - Mohammad Shafi Mir
- Department of Civil Engineering, National Institute of Technology Srinagar, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| | - Vivek
- Department of Civil Engineering, National Institute of Technology Srinagar, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
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Barraza F, Javed MB, Noernberg T, Schultz J, Shotyk W. Spatial variation and chemical reactivity of dusts from open-pit bitumen mining using trace elements in snow. Chemosphere 2024; 350:141081. [PMID: 38160952 DOI: 10.1016/j.chemosphere.2023.141081] [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: 06/27/2023] [Revised: 12/13/2023] [Accepted: 12/28/2023] [Indexed: 01/03/2024]
Abstract
The chemical reactivity of trace elements (TEs) in dusts from bitumen mining, upgrading and related industrial activities in the Athabasca Bituminous Sands region (ABS), Alberta, Canada, was evaluated using the acid-soluble fraction of snow. Samples were collected at 14 sites along the Athabasca River (AR) and its tributaries, and at 3 remote locations. Following metal-free, ultra-clean procedures for processing and analysis, samples were leached with nitric acid (pH < 1), filtered (<0.45 μm), and analyzed using ICP-MS. Insoluble particles (>0.45 μm) were examined using SEM-EDS. Along the river, acid-soluble concentrations of TEs varied by 6 orders of magnitude, from 1 mg/L (Al) to less than 1 ng/L (Tl). Conservative (Al, Y, La, Th) and mobile (Li, Be, Cs, Sr) lithophile elements, those enriched in bitumen (V, Ni, Mo), and potentially toxic chalcophile elements (As, Cd, Pb, Sb, Tl) showed considerable spatial variation. Normalizing the concentrations of TEs in samples collected near industry to the corresponding concentrations in snow from the reference site (UTK), resulted in enrichments of V and most of the lithophile elements. Dust reactivity, quantified as the ratio of acid-soluble to total concentrations, was less than 50% suggesting limited bioaccessibility. The large differences in behaviour between Cd and Pb versus Ni and V could be due to the occurrence of the former pair in carbonate or sulfide minerals, versus acid-insoluble petcoke particles for the latter couple. Spatial variations in the reactivity of TEs most likely reflect the range in diversity and chemical stability of dust particles, and variations in their abundance in primary source areas. The leaching conditions employed here are extreme (pH < 1) and intended to identify an upper limit of chemical reactivity, with far less dust dissolution expected when these dusts encounter natural waters of the area which range in pH from 4 to 8.
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Affiliation(s)
- Fiorella Barraza
- Department of Renewable Resources, University of Alberta. Edmonton, AB, Canada
| | - Muhammad Babar Javed
- Department of Renewable Resources, University of Alberta. Edmonton, AB, Canada; Hatfield Consultants. Fort McMurray, AB, Canada
| | - Tommy Noernberg
- Department of Renewable Resources, University of Alberta. Edmonton, AB, Canada
| | - Judy Schultz
- Department of Renewable Resources, University of Alberta. Edmonton, AB, Canada
| | - William Shotyk
- Department of Renewable Resources, University of Alberta. Edmonton, AB, Canada.
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Ali MH, Muzaffar A, Khan MI, Farooq Q, Tanvir MA, Dawood M, Hussain MI. Microbes-assisted phytoremediation of lead and petroleum hydrocarbons contaminated water by water hyacinth. Int J Phytoremediation 2024; 26:405-415. [PMID: 37578104 DOI: 10.1080/15226514.2023.2245905] [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] [Indexed: 08/15/2023]
Abstract
An experiment was carried out to explore the impact of petroleum hydrocarbons (PHs)-degrading microbial consortium (MC) on phytoremediation ability and growth of water hyacinth (WH) plants in water contaminated with lead (Pb) and PHs. Buckets (12-L capacity) were filled with water and WH plants, PHs (2,400 mg L-1) and Pb (10 mg L-1) in respective buckets. Plants were harvested after 30 days of transplanting and results showed that PHs and Pb substantially reduced the agronomic (up to 62%) and physiological (up to 49%) attributes of WH plants. However, the application of MC resulted in a substantial increase in growth (38%) and physiology (22%) of WH plants over uninoculated contaminated control. The WH + MC were able to accumulate 93% Pb and degrade/accumulate 72% of PHs as compared to initial concentration. Furthermore, combined use of WH plants and MC in co-contamination of PHs and Pb, reduced Pb and PHs contents in water by 74% and 68%, respectively, than that of initially applied concentration. Our findings suggest that the WH in combination with PHs-degrading MC could be a suitable nature-based water remediation technology for organic and inorganic contaminants and in future it can be used for decontamination of mix pollutants from water bodies.
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Affiliation(s)
- Muhammad Hayder Ali
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Amna Muzaffar
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Imran Khan
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Qammar Farooq
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Ayyoub Tanvir
- Department of Forestry and Range Management, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Dawood
- Department of Environmental Sciences, Bahauddin Zakariya University, Multan, Pakistan
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Dahal H, Roy S, Dey J, Bose Dasgupta S. Impact of the Hydrocarbon Chain Length of Biodegradable Ester-Bonded Cationic Gemini Surfactants on Self-Assembly, In Vitro Gene Transfection, Cytotoxicity, and Antimicrobial Activity. Langmuir 2024; 40:2242-2253. [PMID: 38221732 DOI: 10.1021/acs.langmuir.3c03290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Gemini surfactants, due to their unique structural features and enhanced properties compared to conventional surfactants, are becoming more popular in the domain of colloid and interface science, drug delivery, and gene delivery science. This distinct class of surfactants forms a wide range of self-assembled aggregates depending on their chemical structure and environmental conditions. The present work aims to develop Gemini with three distinct chain lengths linked through the ester group and quaternary nitrogen head groups that can bind DNA molecules and ultimately serve as vectors for DNA transfection. Thus, we synthesized three distinct cationic Gemini with 12, 14, and 16 carbons in their tails and studied the effect of the hydrocarbon chain length on their physicochemical properties and biological applications. The self-assembly of these Geminis in aqueous solution was investigated by a number of techniques, including surface tension, electrical conductivity, fluorescence probe, calorimetry, dynamic light scattering, and atomic force microscopy. All three Gemini were extremely surface active and self-assembled above a very low critical micelle concentration. Calorimetric studies suggested the formation of thermodynamically favorable aggregates in an aqueous medium. Chain length dependence was observed in the size as well as the morphology of the aggregates. These Gemini ions were found to bind DNA strongly, as indicated by the high binding constant values. In vitro gene transfection studies using the RAW 264.7 cell line suggested that all three cationic Gemini had transfection efficiencies comparable to that of commercial standard turbofectamine. MTT assay was also performed for concentration selection while using these Gemini as transfection vectors. Overall, it was observed that Gemini had very little cytotoxicity within the investigated concentration range, highlighting the significance of the ester link within the structure. When compared with known antimicrobials such as kanamycin and ampicillin, all three Gemini furnished excellent antimicrobial activity in both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) microorganisms.
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Affiliation(s)
- Homen Dahal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sadhana Roy
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Joykrishna Dey
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Somdeb Bose Dasgupta
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Chen CF, Lin YT, Lin JY. Field temperature performances of in-use permeable sidewalks and asphalt vehicle roads and the potential impacts on apparent temperature and land surface temperature. Environ Monit Assess 2024; 196:205. [PMID: 38279028 DOI: 10.1007/s10661-024-12383-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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 01/20/2024] [Indexed: 01/28/2024]
Abstract
Permeable pavements help reduce surface temperatures and have been widely implemented in urban areas. This study utilized an in-use permeable pavement sidewalk in front of a mass rapid transit station in the Taipei city center of Taiwan to determine the actual pavement surface temperature performance. A neighboring asphalt road and impervious pavement were also monitored. With a full year of continuous monitoring, the results showed that the temperature of permeable pavement was 3.7 °C lower than that of impervious pavement and 4.5 °C lower than that of asphalt pavement in the hot season. The frequent rainfall in spring resulted in the smallest temperature differences between the different pavement types. The cooling effects of permeable pavement differed at the different air temperatures. At air temperatures lower than 15 °C, the differences among pavement surface temperatures were noticeable. However, when the air temperature was higher than 35 °C, the surface temperature of permeable pavement was not different from that of impervious pavement and was greater than 55 °C. Field observations were carried out to determine the effects on the apparent temperature and the future surface temperature of climate change scenarios. The results showed that permeable pavement could reduce the average apparent temperature to near the air temperature, and asphalt pavement could increase the apparent temperature by 1.2 °C, assuming that the pavement temperature completely affects the air temperature. With the good prediction ability of the machine learning approach and 15 environmental factors, the preliminary prediction showed the projected surface temperature change in Taipei city in 2033. In the worst-case scenario, the average impervious pavement temperature is as high as 39.12 °C, whereas the average permeable pavement temperature is 32.50 °C.
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Affiliation(s)
- Chi-Feng Chen
- Department of Civil Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - You-Ting Lin
- Department of Civil Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Jen-Yang Lin
- Department of Civil Engineering, National Taipei University of Technology, Taipei, Taiwan.
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Huang D, Shi J, Ouyang Z. Effect of epoxy value on the rheological properties and microcosmic mechanism of WER emulsified asphalt. PLoS One 2024; 19:e0296202. [PMID: 38277357 PMCID: PMC10817193 DOI: 10.1371/journal.pone.0296202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 12/07/2023] [Indexed: 01/28/2024] Open
Abstract
Waterborne epoxy resin (WER), a cleaning material with exceptional high-temperature resistance, has attracted much attention to modify emulsified asphalt in the pavement material field. Epoxy value is the critical characteristic index of WER. In this research, three WER with the epoxy values of 0.20 eq/100g, 0.44 eq/100g, and 0.51 eq/100g were utilized as asphalt modifiers. The influence of epoxy value on WER-EA was investigated by comparing the rheological properties of three kinds of WER emulsified asphalt (WER-EA). The modification mechanism of WER-EA has been analyzed using FTIR and SEM. The results demonstrate that different WER-EA resulted in significantly different rheological properties. WER-EA with the epoxy value of 0.20 eq/100g (E20) performed best at high temperatures, with a maximum increase of 17477% in G*/sinδ compared to the neat asphalt and a maximum increase of 66.3% in G*/sinδ compared to the other two WER-EA. WER-EA with 0.44 eq/100g epoxy value (E44) performed best at low temperatures, with a maximum increase in m value of 39.4% and a maximum decrease in S value of 33.3% compared to the other two WER-EA. In addition, the interpenetrating polymer network (IPN) in E20 was observed to be more solid and stable, and IPN in E44 was more uniform. To summarize, lower epoxy value led to a higher degree of WER reaction and higher content of rigid groups, which is more conducive to optimizing the high-temperature property of WER-EA. WER with moderate epoxy value resulted in a low content of polar bonds and thus high content of flexible segments, which helps emulsified asphalt to form a more uniform IPN.
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Affiliation(s)
- Dongqing Huang
- Guangzhou City Center Transportation Project Management Center, Guangzhou, China
| | - Junyi Shi
- College of Transportation Engineering, Tongji University, Shanghai, China
- The Key Laboratory of Road and Traffic Engineering, Ministry of Education, College of Transportation Engineering, Tongji University, Shanghai, China
| | - Zongyan Ouyang
- Southwest Jiaotong University and Leeds Joint School, Sichuan, China
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Heeb NV, Muñoz M, Haag R, Wyss S, Schönenberger D, Durdina L, Elser M, Siegerist F, Mohn J, Brem BT. Corelease of Genotoxic Polycyclic Aromatic Hydrocarbons and Nanoparticles from a Commercial Aircraft Jet Engine - Dependence on Fuel and Thrust. Environ Sci Technol 2024; 58:1615-1624. [PMID: 38206005 PMCID: PMC10809754 DOI: 10.1021/acs.est.3c08152] [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] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024]
Abstract
Jet engines are important contributors to global CO2 emissions and release enormous numbers of ultrafine particles into different layers of the atmosphere. As a result, aviation emissions are affecting atmospheric chemistry and promote contrail and cloud formation with impacts on earth's radiative balance and climate. Furthermore, the corelease of nanoparticles together with carcinogenic polycyclic aromatic hydrocarbons (PAHs) affects air quality at airports. We studied exhausts of a widely used turbofan engine (CFM56-7B26) operated at five static thrust levels (idle, 7, 30, 65, and 85%) with conventional Jet A-1 fuel and a biofuel blend composed of hydro-processed esters and fatty acids (HEFA). The particles released, the chemical composition of condensable material, and the genotoxic potential of these exhausts were studied. At ground operation, particle number emissions of 3.5 and 0.5 × 1014 particles/kg fuel were observed with highest genotoxic potentials of 41300 and 8800 ng toxicity equivalents (TEQ)/kg fuel at idle and 7% thrust, respectively. Blending jet fuel with HEFA lowered PAH and particle emissions by 7-34% and 65-67% at idle and 7% thrust, respectively, indicating that the use of paraffin-rich biofuels is an effective measure to reduce the exposure of airport personnel to nanoparticles coated with genotoxic PAHs (Trojan horse effect).
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Affiliation(s)
- Norbert V. Heeb
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Maria Muñoz
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Regula Haag
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Simon Wyss
- Empa, Swiss Federal
Laboratories for Materials Science and Technology, Laboratory for Air Pollution/Environmental Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - David Schönenberger
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Empa, Swiss Federal
Laboratories for Materials Science and Technology, Laboratory for Air Pollution/Environmental Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Lukas Durdina
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Miriam Elser
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Empa, Swiss Federal
Laboratories for Materials Science and Technology, Automotive Powertrain Technologies Laboratory, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | | | - Joachim Mohn
- Empa, Swiss Federal
Laboratories for Materials Science and Technology, Laboratory for Air Pollution/Environmental Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Benjamin T. Brem
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
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Vigneron A, Guyoneaud R, Goñi-Urriza M. Genome-Centric Metatranscriptomics Reveals Multiple Co-occurring Routes for Hydrocarbon Degradation in Chronically Contaminated Marine Microbial Mats. Environ Sci Technol 2024; 58:1551-1562. [PMID: 38197744 DOI: 10.1021/acs.est.3c08386] [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] [Indexed: 01/11/2024]
Abstract
Long-term hydrocarbon pollution is a devious threat to aquatic and marine ecosystems. However, microbial responses to chronic pollution remain poorly understood. Combining genome-centric metagenomic and metatranscriptomic analyses of microbial mat samples that experienced chronic hydrocarbon pollution for more than 80 years, we analyzed the transcriptomic activity of alkane and aromatic hydrocarbon degradation pathways at the population level. Consistent with the fluctuating and stratified redox conditions of the habitat, both aerobic and anaerobic hydrocarbon degradation pathways were expressed by taxonomically and metabolically contrasted lineages including members of Bacteroidiales, Desulfobacteraceae, Pseudomonadales; Alcanivoraceae and Halieaceae populations with (photo)-heterotrophic, sulfur- and organohalide-based metabolisms, providing evidence for the co-occurrence and activity of aerobic and anaerobic hydrocarbon degradation pathways in shallow marine microbial mats. In addition, our results suggest that aerobic alkane degradation in long-term pollution involved bacterial families that are naturally widely distributed in marine habitats, but hydrocarbon concentration and composition were found to be a strong structuring factor of their intrafamily diversity and transcriptomic activities.
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Affiliation(s)
- Adrien Vigneron
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau 64053, France
| | - Rémy Guyoneaud
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau 64053, France
| | - Marisol Goñi-Urriza
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau 64053, France
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68
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Lei J, Zhao F, Wang Y, Su H. Optimization design of fiber rubber asphalt gravel sealing layer based on fatigue crack resistance test. PLoS One 2024; 19:e0297090. [PMID: 38252653 PMCID: PMC10802954 DOI: 10.1371/journal.pone.0297090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024] Open
Abstract
Crack is one of the main diseases of pavement structure. In order to improve the anti-reflective crack ability of pavement, fiber rubber gravel sealing layer is proposed as the stress absorbing layer. In view of the shortcoming that Mcleod design method can not be associated with road performance, a sealing layer optimization design method based on fatigue crack test is proposed. Firstly, the reinforcement effect of fiber on rubber asphalt was studied through force ductility testing. Secondly, the optimum dosage of fiber, asphalt and gravel was optimized through fatigue cracking resistance test. Finally, the cracking resistance of fiber rubber gravel seal was verified through fracture energy test. The results show that fibers can significantly increase the maximum tensile force and strain yield energy of rubber asphalt, and basalt fiber has the best reinforcement effect. The most obvious effect on cracking resistance performance in the sealing layer is the amount of fiber, followed by the amount of asphalt, and finally the amount of gravel. The optimized material combination with the best crack resistance is 120g/m2 fiber, 14kg/m2 gravel and 2.4kg/m2 rubber asphalt, and the fatigue resistance times can reach 19532 times. The fracture energy of the composite pavement treated by the optimized sealing layer is nearly double that of the non-treated pavement structure, and it has a good anti-crack effect.
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Affiliation(s)
- Jun’an Lei
- School of Civil Engineering and Architecture, Hubei University of Arts and Science, Xiangyang, Hubei, China
| | - Fujing Zhao
- School of Education, Hubei University of Arts and Science, Xiangyang, Hubei, China
| | - Yuanyuan Wang
- School of Civil Engineering and Architecture, Hubei University of Arts and Science, Xiangyang, Hubei, China
| | - Haicheng Su
- Xiangyang Road and Bridge Construction Group Co., Ltd., Xiangyang, Hubei, China
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69
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Mooney ED, Maho T, Philp RP, Bevitt JJ, Reisz RR. Paleozoic cave system preserves oldest-known evidence of amniote skin. Curr Biol 2024; 34:417-426.e4. [PMID: 38215745 DOI: 10.1016/j.cub.2023.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/29/2023] [Accepted: 12/05/2023] [Indexed: 01/14/2024]
Abstract
The richest and most diverse assemblage of early terrestrial tetrapods is preserved within the infilled cave system of Richards Spur, Oklahoma (289-286 Mya1). Some of the oldest-known terrestrial amniotes2,3 are exquisitely preserved here because of early impregnation and encasement of organic material by oil-seep hydrocarbons within rapidly deposited clay-rich cave sediments under toxic anoxic conditions.4 This phenomenon has also afforded the preservation of exceedingly rare integumentary soft tissues, reported here, providing critical first evidence into the anatomical changes marking the transition from the aquatic and semiaquatic lifestyles of anamniotes to the fully terrestrial lifestyles of early amniotes. This is the first record of a skin-cast fossil (3D carbonization of the skin proper) from the Paleozoic Era and the earliest known occurrence of epidermal integumentary structures. We also report on several compression fossils (carbonized skin impressions), all demonstrating similar external morphologies to extant crocodiles. A variety of previously unknown ossifications, as well as what are likely palpebral ossifications of the deeper dermis layer of the skin, are also documented. These fossils also serve as invaluable references for paleontological reconstructions. Chromatographic analysis of extractable hydrocarbons from bone and cave samples indicates that the source rock is the Devonian age Woodford Shale. Hydrocarbons derived from ancient marine organisms interacting with geologically younger terrestrial vertebrates have therefore resulted in the oldest-known preservation of amniote skin proper.
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Affiliation(s)
- Ethan D Mooney
- Dinosaur Evolution Research Center, International Center of Future Science, Jilin University, 2699 Qianjin Str., Changchun, Jilin Province 130012, China; Department of Biology, University of Toronto Mississauga, 3359 Mississauga Rd., Mississauga L5L1C6, Ontario, Canada.
| | - Tea Maho
- Dinosaur Evolution Research Center, International Center of Future Science, Jilin University, 2699 Qianjin Str., Changchun, Jilin Province 130012, China; Department of Biology, University of Toronto Mississauga, 3359 Mississauga Rd., Mississauga L5L1C6, Ontario, Canada.
| | - R Paul Philp
- School of Geosciences, University of Oklahoma, 1000 Asp Avenue, Norman 73019, Oklahoma, USA
| | - Joseph J Bevitt
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, New Illawarra Rd., Lucas Heights 2234, New South Wales, Australia
| | - Robert R Reisz
- Dinosaur Evolution Research Center, International Center of Future Science, Jilin University, 2699 Qianjin Str., Changchun, Jilin Province 130012, China; Department of Biology, University of Toronto Mississauga, 3359 Mississauga Rd., Mississauga L5L1C6, Ontario, Canada.
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70
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Zhang Y, Zheng M, Wang Z, Liu Z, Chen S, Li X, Shi Y, Hu H. Discovery of novel antibacterial agent for the infected wound treatment: all-hydrocarbon stapling optimization of LL-37. Theranostics 2024; 14:1181-1194. [PMID: 38323312 PMCID: PMC10845205 DOI: 10.7150/thno.87916] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 12/28/2023] [Indexed: 02/08/2024] Open
Abstract
Rationale: Antimicrobial peptide LL-37 has been recognized as a favorable alternative to antibiotics due to its broad antibacterial spectrum, low resistance development and diverse biological activities. However, its high manufactory cost, poor proteolytic stability, and unpredictable cytotoxicity seriously hindered its medical translation. Methods: To push the frontiers of its clinical application, all-hydrocarbon stapling strategy was exploited here for the structural modification of KR-12, the core and minimal fragment of LL-37. Results: Based on a library of KR-12 derivatives that designed and synthesized to be stapled at positions of either i, i+4 or i, i+7, structure to activity relationship was investigated. Among them, KR-12(Q5, D9) with the glutamine and aspartic acid residues stapled displayed increased helical content and positive charge. The reinforced α-helical conformation not only protected it from proteolytic hydrolysis but also improved its antibacterial efficacy via effective membrane perturbation and anti-inflammatory efficacy via compact LPS binding. Besides, the increased positive charge endowed it with an enhanced therapeutic index. On infected wound mouse model, it was demonstrated to eliminate bacteria and promote wound closure and regeneration effectively. Conclusion: Overall, the all-hydrocarbon stapling was proven to lay the foundation for the future development of antibacterial agents. KR-12(Q5, D9) could serve as a lead compound for the clinical treatment of bacterial infections.
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Affiliation(s)
- Yanan Zhang
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Mengjun Zheng
- School of Pharmacy, Naval Medical University, Shanghai 200433, China
| | - Zhe Wang
- Institute of Bioengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhinan Liu
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Sumeng Chen
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Xiang Li
- School of Pharmacy, Naval Medical University, Shanghai 200433, China
| | - Yejiao Shi
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Honggang Hu
- School of Medicine, Shanghai University, Shanghai 200444, China
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71
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Magam SM, Masood N, Alkhadher SAA, Alanazi TYA, Zakaria MP, Sidek LM, Suratman S, Alrabie NA. Seasonal variations in the distribution of aliphatic hydrocarbons in surface sediments from the Selangor River, Peninsular Malaysia's West Coast. Environ Geochem Health 2024; 46:38. [PMID: 38227164 DOI: 10.1007/s10653-023-01828-w] [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: 02/21/2023] [Accepted: 12/05/2023] [Indexed: 01/17/2024]
Abstract
The seasonal variation of petroleum pollution including n-alkanes in surface sediments of the Selangor River in Malaysia during all four climatic seasons was investigated using GC-MS. The concentrations of n-alkanes in the sediment samples did not significantly correlate with TOC (r = 0.34, p > 0.05). The concentrations of the 29 n-alkanes in the Selangor River ranged from 967 to 3711 µg g-1 dw, with higher concentrations detected during the dry season. The overall mean per cent of grain-sized particles in the Selangor River was 85.9 ± 2.85% sand, 13.5 ± 2.8% clay, and 0.59 ± 0.34% gravel, respectively. n-alkanes are derived from a variety of sources, including fresh oil, terrestrial plants, and heavy/degraded oil in estuaries. The results of this study highlight concerns and serve as a warning that hydrocarbon contamination is affecting human health. As a result, constant monitoring and assessment of aliphatic hydrocarbons in coastal and riverine environments are needed.
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Affiliation(s)
- Sami M Magam
- Basic Science Department, Preparatory Year, University of Ha'il, 1560, Hail City, Kingdom of Saudi Arabia
- Department of Marine Chemistry and Pollution, Faculty of Marine Science and Environment, Hodeidah University, Al Hudaydah, Yemen
| | - Najat Masood
- Department of Chemistry, College of Science, University of Ha'il, Ha'il City, Saudi Arabia.
- Department of Marine Chemistry and Pollution, Faculty of Marine Science and Environment, Hodeidah University, Al Hudaydah, Yemen.
| | - Sadeq A A Alkhadher
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), Putrajaya Campus, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
- Yemen Standardization, Metrology and Quality Control Organization (YSMQ), Sana'a, Yemen
| | - Tahani Y A Alanazi
- Department of Chemistry, College of Science, University of Ha'il, Ha'il City, Saudi Arabia
| | - Mohamad Pauzi Zakaria
- Associate Member, Institute of Ocean and Earth Sciences (IOES), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Lariyah Mohd Sidek
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), Putrajaya Campus, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
| | - Suhaimi Suratman
- Institute of Oceanography and Environment, Universi, Universiti Malaysia Terengganu, Kuala Nerus , 21030, Terengganu, Malaysia
| | - Nabeel Abdullah Alrabie
- Environmental Forensics Laboratory, Faculty of Environmental Studies, Universiti Putra Malaysia UPM, 43400, Serdang, Selangor, Malaysia
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72
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Sun L, Zhong W, Xiao Z, Qi H. Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt. PLoS One 2024; 19:e0284813. [PMID: 38206936 PMCID: PMC10783774 DOI: 10.1371/journal.pone.0284813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/08/2023] [Indexed: 01/13/2024] Open
Abstract
This research was based on a nano-AAT (American Advanced Technology)-modified asphalt to which CRP (crumb rubber powder), a rubber waste, was introduced to explore the influence of CRP on AAT performance. The changes in the performance of AAT-modified asphalt after the addition of CRP were analyzed. The rubber powder with the raw material of waste tire was added to the asphalt instead of SBS modifier. While achieving waste recycling, the asphalt material has good performance. Physical analysis methods, rheological performance tests, rolling thin-film oven tests and Fourier transform infrared spectroscopy tests were used to investigate the performance of the composite-modified asphalt. The rheological properties of the composite-modified asphalt were analyzed by means of DSR, BBR and MSCR tests, and the microscopic mechanism of the modified asphalt was investigated by means of FTIR tests. The optimal nano-AAT-composite-modified formulation A3C3 (AAT-3.5%SBS-3%CRP) was selected by evaluating the overall performance. Additionally, the performances of the AAT/CRP-composite-modified asphalt and SBS-modified asphalt were compared using physical indicators, the rutting factor, creep flexibility and the stiffness modulus. The results show that the A3C3-modified asphalt had better stiffness, high-temperature (HT) performance and aging resistance than the SBS-modified asphalt, but it was less effective at low temperatures (LTs). According to FTIR, the absorption curves of A3C3 and SBS are essentially equal, with A3C3 only having a variation at 1104 cm-1.
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Affiliation(s)
- Lu Sun
- Department of Civil Engineering Technology, Rochester Institute of Technology, Environmental Management and Safety, Rochester, NY, United States of America
| | - Wenqing Zhong
- College of Architectural Science and Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Ziwei Xiao
- College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Hui Qi
- School of Qilu Transportation, Shandong University, Jinan, 250002, China
- Shandong High-Speed Group, Co. Ltd., Jinan, 250101, China
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73
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Sultana N, Roddick FA, Pramanik BK. Fat, oil and grease wastewater and dishwashers: Uncovering the link to FOG deposition. Sci Total Environ 2024; 907:168032. [PMID: 37898191 DOI: 10.1016/j.scitotenv.2023.168032] [Citation(s) in RCA: 1] [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: 07/08/2023] [Revised: 10/17/2023] [Accepted: 10/20/2023] [Indexed: 10/30/2023]
Abstract
Fats, oils, and grease (FOG) in wastewater generated by commercial food establishments can cause severe environmental damage if not adequately treated. Grease interceptors (GIs) are an effective solution to limit FOG disposal into the sewer, but their efficiency greatly depends on the wastewater's characteristics. This laboratory study examined the physical and chemical properties of synthetic FOG wastewater from handwashing sinks and dishwashers using cooked animal fats and oils, some food solids and the same amount of detergent to explore the impact of dishwashers on key FOG components that contribute to FOG depositions. Results showed that dishwasher-generated wastewater had a significant influence on fatty acid (FA) transformations, particularly in producing very long chain saturated FAs. Relative proportions of FAs revealed a considerable proportion of very long chain FAs, such as palmitoleic (C16:1), linoleic (C18:2), α-linolenic (C18:3), arachidic (C20:0), paullinic (C20:1), behenic (C22:0), erucic (C22:1), lignoceric (C24:0) and nervonic (C24:1), among which most were not highlighted in the real field FOG wastewater. These FAs may play a significant role in FOG solidification if not sufficiently removed before disposal to sewer. The study also found that dishwashers were able to break down FOG particles, creating smaller particles (75 % being ≤68.8 μm and 50 % being ≤7 μm), while handwashing sinks produced larger particles (50 % being ≤118 μm and 10 % being ≤7 μm and). Samples containing cooked animal fats were more likely to be fragmented into smaller sizes than cooking oils due to the impact of the dishwasher. Confocal microscopy analysis results were consistent with the particle sizes measured by laser diffraction. These distinct properties could serve as criteria for updating GI designs, limiting the amount of FOG and FAs disposed of in the sewer system and controlling solidification and blockages, which pose significant threats to the environment.
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Affiliation(s)
- Nilufa Sultana
- School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
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74
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Ying D, Shen X, Wang S, Chen J, Wu Z, Chen W, Wang F, Min J, Yu Y. Discovery of 4-hydroxyl pyrazole derivatives as potent ferroptosis inhibitors. Eur J Med Chem 2024; 263:115913. [PMID: 37950965 DOI: 10.1016/j.ejmech.2023.115913] [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: 09/04/2023] [Revised: 10/11/2023] [Accepted: 10/24/2023] [Indexed: 11/13/2023]
Abstract
Ferroptosis, an iron-dependent form of regulated cell death, has been well recognized as a pathogenic mechanism in driving many diseases, such as neurodegenerative disorders, ischemia-reperfusion (I/R) injury. Blocking ferroptosis has been emerging as a feasible therapeutic strategy for the prevention and treatment of these diseases. However, novel potent ferroptosis inhibitors remain to be developed for further clinical applications. In this study, we screened our in-house compound libraries by phenotypic assays and identified a 4-hydroxyl pyrazole derivative HW-3 with good ferroptosis inhibitory activity (EC50 = 120.1 ± 3.5 nM). Based on the structure of HW-3, a series of 4-hydroxyl pyrazole derivatives were further designed and synthesized. Among these compounds, compound 25 could significantly inhibit RSL3-induced ferroptosis with an EC50 value of 8.6 ± 2.2 nM in HT-1080 cells, which was 3-fold more potent than the classical ferroptosis inhibitor ferrostatin-1 (Fer-1) (EC50 = 23.4 ± 1.3 nM). The potent ferroptosis inhibitory activity of compound 25 was further validated in multiple additional cell lines. Our mechanistic study revealed that compound 25 inhibited ferroptosis via intrinsic radical-trapping antioxidative capacity. Taken together, the findings of our study demonstrate 4-hydroxyl pyrazole derivative 25 is a potent ferroptosis inhibitor, which holds a great therapeutic potential for further development.
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Affiliation(s)
- Danzhi Ying
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xin Shen
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Shuqi Wang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Junyi Chen
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Zhenying Wu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wenteng Chen
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Fudi Wang
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Junxia Min
- The First Affiliated Hospital, The Second Affiliated Hospital, Institute of Translational Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - Yongping Yu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
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75
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Wigren MA, Johnson TA, Griffitt RJ, Hay AG, Knott JA, Sepúlveda MS. Limited impact of weathered residues from the Deepwater Horizon oil spill on the gut-microbiome and foraging behavior of sheepshead minnows ( Cyprinodon variegatus). J Toxicol Environ Health A 2024; 87:1-21. [PMID: 37830742 DOI: 10.1080/15287394.2023.2265413] [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] [Indexed: 10/14/2023]
Abstract
The Deepwater Horizon disaster of April 2010 was the largest oil spill in U.S. history and exerted catastrophic effects on several ecologically important fish species in the Gulf of Mexico (GoM). Within fish, the microbiome plays a key symbiotic role in maintaining host health and aids in acquiring nutrients, supporting immune function, and modulating behavior. The aim of this study was to examine if exposure to weathered oil might produce significant shifts in fish gut-associated microbial communities as determined from taxa and genes known for hydrocarbon degradation, and whether foraging behavior was affected. The gut microbiome (16S rRNA and shotgun metagenomics) of sheepshead minnow (Cyprinodon variegatus) was characterized after fish were exposed to oil in High Energy Water Accommodated Fractions (HEWAF; tPAH = 81.1 ± 12.4 µg/L) for 7 days. A foraging behavioral assay was used to determine feeding efficiency before and after oil exposure. The fish gut microbiome was not significantly altered in alpha or beta diversity. None of the most abundant taxa produced any significant shifts as a result of oil exposure, with only rare taxa showing significant shifts in abundance between treatments. However, several bioindicator taxa known for hydrocarbon degradation were detected in the oil treatment, primarily Sphingomonas and Acinetobacter. Notably, the genus Stenotrophomonas was detected in high abundance in 16S data, which previously was not described as a core member of fish gut microbiomes. Data also demonstrated that behavior was not significantly affected by oil exposure. Potential low bioavailability of the oil may have been a factor in our observation of minor shifts in taxa and no behavioral effects. This study lays a foundation for understanding the microbiome of captive sheepshead minnows and indicates the need for further research to elucidate the responses of the fish gut-microbiome under oil spill conditions.
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Affiliation(s)
- Maggie A Wigren
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
| | - Timothy A Johnson
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Robert J Griffitt
- Division of Coastal Sciences, School of Ocean Science and Engineering, University of Southern Mississippi, Ocean Springs, MS, USA
| | - Anthony G Hay
- Department of Microbiology, Cornell University, Ithaca, NY, USA
| | - Jonathan A Knott
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
| | - Maria S Sepúlveda
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
- Faculty of Life Sciences, Universidad Andres Bello, Santiago, Chile
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76
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Affiliation(s)
- Jeremy H Mills
- School of Molecular Sciences and The Biodesign Institute of Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, USA.
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77
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Khabir M, Izadi H, Mahdian K. Impact of diapause on the cuticular hydrocarbons and physiological status of Hippodamia variegata. J Insect Sci 2024; 24:11. [PMID: 38387433 PMCID: PMC10883706 DOI: 10.1093/jisesa/ieae005] [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] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 12/19/2023] [Accepted: 01/17/2024] [Indexed: 02/24/2024]
Abstract
The spotted amber ladybird, Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae), is known to be a potent predator of aphids, psyllids, whiteflies, mealybugs, and some butterfly species. This ladybeetle overwinters in the diapausing adult stage. The current study aimed to evaluate the impact of diapause on the energy resources and cuticular hydrocarbons (CHCs) of the female ladybeetle, specifically comparing the changes in glycogen, lipid, and protein contents, and CHCs profile of diapausing and non-diapausing adults. In this study, gas chromatography-mass was used to analyze whole-body extracts of the beetles. Results showed no significant differences between the amount of glycogen, lipid, and protein contents of diapausing and non-diapausing ladybeetle. The CHCs profile of H. variegata consisted of 24 hydrocarbons categorized into 2 groups: linear aliphatic hydrocarbons (n-alkanes) and methyl-branched hydrocarbons (17 molecules), as well as unsaturated cyclic compounds (7 molecules). The n-alkanes, with 14 compounds, were identified as the primary constituents of the CHCs of the ladybeetle. Six molecules were common to non-diapausing and diapausing beetles, 5 were exclusive to non-diapausing beetles, and 13 were exclusive to diapausing beetles. Moreover, we noted a significant difference in the quantity and quality of CHCs between diapausing and non-diapausing beetles, with diapausing beetles synthesizing more CHCs with longer chains. This disparity in CHC profiles was concluded to be an adaptation of H. variegata to survive harsh environmental conditions during diapause.
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Affiliation(s)
- Mahsa Khabir
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Hamzeh Izadi
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Kamran Mahdian
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
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78
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Prasad US, Mishra RS, Das RK. Study of vapor compression refrigeration system with suspended nanoparticles in the low GWP refrigerant. Environ Sci Pollut Res Int 2024; 31:1-26. [PMID: 38012498 DOI: 10.1007/s11356-023-30596-4] [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] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 10/18/2023] [Indexed: 11/29/2023]
Abstract
The rising global temperatures, attributed to the high global warming potential (GWP) of conventional refrigerants, necessitate the adoption of low-GWP alternatives in HVAC systems. However, these low-GWP refrigerants often exhibit high toxicity and flammability, limiting their usage. To address these challenges, compact heat exchangers incorporating blended refrigerants have been introduced to enhance HVAC system performance. Researchers have also made significant strides in improving HVAC system efficiency by introducing the concept of suspending nanolubricants and nanorefrigerants within the system. This review paper seeks to comprehensively assess the potential of alternative refrigerants containing suspended nanoparticles, commonly referred to as nanorefrigerants. The paper reviews various mechanisms and potential combinations of different nanorefrigerants employed to enhance refrigeration system effectiveness and efficiency. A detailed examination of key heat transfer parameters and the performance predictions of low-GWP refrigerants, including those from the hydrofluoroolefin (HFO) and hydrocarbon (HC) classes, is conducted through energy and exergy analyses. Commercial refrigerants like R-134a, R-290, R-600, R-600a, R-123, R-125, R-22, R-141b, R-152, R-11, R-113, R-404a, R-407c, R-502, R-600a, R-507a, R-1234yf, R-1234ze, 1336mzz(Z), and R-410a are evaluated in conjunction with suspended nanoparticles, considering their specific properties. The findings indicate that the utilization of nanorefrigerants leads to notable improvements in overall system performance, characterized by reduced compressor workloads and increased heat transfer rates. Consequently, the integration of blended nanoparticles into refrigerants holds significant promise for advancing the HVAC field.
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79
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Tan SW, Yoon BK, Jackman JA. Membrane-Disruptive Effects of Fatty Acid and Monoglyceride Mitigants on E. coli Bacteria-Derived Tethered Lipid Bilayers. Molecules 2024; 29:237. [PMID: 38202820 PMCID: PMC10780109 DOI: 10.3390/molecules29010237] [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] [Received: 12/12/2023] [Revised: 12/23/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
We report electrochemical impedance spectroscopy measurements to characterize the membrane-disruptive properties of medium-chain fatty acid and monoglyceride mitigants interacting with tethered bilayer lipid membrane (tBLM) platforms composed of E. coli bacterial lipid extracts. The tested mitigants included capric acid (CA) and monocaprin (MC) with 10-carbon long hydrocarbon chains, and lauric acid (LA) and glycerol monolaurate (GML) with 12-carbon long hydrocarbon chains. All four mitigants disrupted E. coli tBLM platforms above their respective critical micelle concentration (CMC) values; however, there were marked differences in the extent of membrane disruption. In general, CA and MC caused larger changes in ionic permeability and structural damage, whereas the membrane-disruptive effects of LA and GML were appreciably smaller. Importantly, the distinct magnitudes of permeability changes agreed well with the known antibacterial activity levels of the different mitigants against E. coli, whereby CA and MC are inhibitory and LA and GML are non-inhibitory. Mechanistic insights obtained from the EIS data help to rationalize why CA and MC are more effective than LA and GML at disrupting E. coli membranes, and these measurement capabilities support the potential of utilizing bacterial lipid-derived tethered lipid bilayers for predictive assessment of antibacterial drug candidates and mitigants.
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Affiliation(s)
- Sue Woon Tan
- School of Chemical Engineering and Translational Nanobioscience Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Bo Kyeong Yoon
- School of Healthcare and Biomedical Engineering, Chonnam National University, Yeosu 59626, Republic of Korea
| | - Joshua A. Jackman
- School of Chemical Engineering and Translational Nanobioscience Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
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80
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Smrzka D, Zwicker J, Schulz-Vogt H, Little CTS, Rieder M, Meister P, Gier S, Peckmann J. Fossilized giant sulfide-oxidizing bacteria from the Devonian Hollard Mound seep deposit, Morocco. Geobiology 2024; 22:e12581. [PMID: 38059419 DOI: 10.1111/gbi.12581] [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: 01/27/2023] [Revised: 10/22/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
The giant sulfide-oxidizing bacteria are particularly prone to preservation in the rock record, and their fossils have been identified in ancient phosphorites, cherts, and carbonates. This study reports putative spherical fossils preserved in the Devonian Hollard Mound hydrocarbon-seep deposit. Based on petrographical, mineralogical, and geochemical evidence the putative microfossils are interpreted as sulfide-oxidizing bacteria similar to the present-day genus Thiomargarita, which is also found at modern hydrocarbon seeps. The morphology, distribution, size, and occurrence of the fossilized cells show a large degree of similarity to their modern counterparts. Some of the spherical fossils adhere to worm tubes analogous to the occurrence of modern Thiomargarita on the tubes of seep-dwelling siboglinid worms. Fluorapatite crystals were identified within the fossilized cell walls, suggesting the intercellular storage of phosphorus analogous to modern Thiomargarita cells. The preservation of large sulfide-oxidizing bacteria was probably linked to changing biogeochemical processes at the Hollard Mound seep or, alternatively, may have been favored by the sulfide-oxidizing bacteria performing nitrate-dependent sulfide oxidation-a process known to induce carbonate precipitation. The presence of sulfide-oxidizing bacteria at a Devonian hydrocarbon seep highlights the similarities of past and present chemosynthesis-based ecosystems and provides valuable insight into the antiquity of biogeochemical processes and element cycling at Phanerozoic seeps.
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Affiliation(s)
- Daniel Smrzka
- Faculty of Geosciences, Universität Bremen, Bremen, Germany
- MARUM Center for Marine and Environmental Sciences, Bremen, Germany
| | - Jennifer Zwicker
- Institute for Mineralogy und Crystallography, Universität Wien, Wien, Austria
| | - Heide Schulz-Vogt
- Leibniz Institute for Baltic Sea Research Warnemünde (IOW), Rostock, Germany
| | - Crispin T S Little
- School of Earth and Environment, University of Leeds, Leeds, UK
- Life Sciences Department, Natural History Museum, London, UK
| | | | | | - Susanne Gier
- Department of Geology, Universität Wien, Wien, Austria
| | - Jörn Peckmann
- Institute for Geology, Center for Earth System Research and Sustainability, Universität Hamburg, Hamburg, Germany
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81
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Rodriguez MN, Campetella DM, Carmona NB, Ponce JJ, Parada MN. Microbial mats and their palaeoenvironmental analysis in offshore - shelf facies of the Los Molles Formation (Toarcian - Lower Callovian) in the Chacay Melehue area, Neuquén Basin, Argentina. Geobiology 2024; 22:e12580. [PMID: 37990865 DOI: 10.1111/gbi.12580] [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] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 08/11/2023] [Accepted: 11/10/2023] [Indexed: 11/23/2023]
Abstract
This contribution presents the first study focused on the analysis of microbial mats in the Los Molles Formation (Toarcian - Early Callovian), Neuquén Basin, Argentina. This unit mainly represents offshore-to-shelf environments affected by storms and density currents. The Los Molles Formation is one of the oldest source rocks in the Neuquén Basin and constitutes an unconventional shale gas reservoir of great economic importance. The aim of this work was to identify the microbial activity from the description and interpretation of microbially induced sedimentary structures (MISS), to determine the paleoenvironmental and paleoecological conditions under which they formed, and to establish a possible relationship between these structures and the trace fossil Trichichnus. Samples from the levels with MISS were analyzed and described from macroscopic and binocular observations, petrographic microscope thin sections, and SEM samples with EDS analyses. The results showed several levels of microbial mats presenting diverse MISS, including biolaminations and Kinneyia-like wrinkles structures that were described at the macroscopic level. In thin sections, biolaminations, filament-like microstructures with different degrees of development, oriented grains and pyrite were observed. SEM images and EDS analyses showed different types of filaments, coccoids and EPS with high concentrations of carbon. These results revealed that the studied levels fulfill the established biogenicity criteria, guaranteeing that they have a bacterial origin. The abundance of the trace fossil Trichichnus sp. throughout the section and the proximity to some Kinneyia-like wrinkle structures levels suggests that the same organisms may have generated them. Furthermore, they revealed that the Los Molles Formation, at the time of its deposition, experienced paleoecological and paleoenvironmental conditions appropriate for the establishment and development of microbial mats. The extensive levels of microbial mats in the study area suggest that they may have been a source of organic matter for the generation of hydrocarbons from the Los Molles Formation.
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Affiliation(s)
- Maximiliano Nicolás Rodriguez
- Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
| | - Débora Mical Campetella
- Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
| | - Noelia Beatriz Carmona
- Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
| | - Juan José Ponce
- Universidad Nacional de Río Negro (UNRN), Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Río Negro, Argentina
- Servicio Geológico Minero Argentino (SEGEMAR), Centro General Roca, Río Negro, Argentina
| | - Martín Nazareno Parada
- Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina
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82
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Garrison CE, Pachiadaki MG, Soliman S, Helfrich A, Taylor GT. Microbes and microplastics: Community shifts along an urban coastal contaminant gradient. Environ Microbiol 2024; 26:e16563. [PMID: 38151777 DOI: 10.1111/1462-2920.16563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/11/2023] [Indexed: 12/29/2023]
Abstract
Plastic substrates introduced to the environment during the Anthropocene have introduced new pathways for microbial selection and dispersal. Some plastic-colonising microorganisms have adapted phenotypes for plastic degradation (selection), while the spatial transport (dispersal) potential of plastic colonisers remains controlled by polymer-specific density, hydrography and currents. Plastic-degrading enzyme abundances have recently been correlated with concentrations of plastic debris in open ocean environments, making it critical to better understand colonisation of hydrocarbon degraders with plastic degradation potential in urbanised watersheds where plastic pollution often originates. We found that microbial colonisation by reputed hydrocarbon degraders on microplastics (MPs) correlated with a spatial contaminant gradient (New York City/Long Island waterways), polymer types, temporal scales, microbial domains and putative cell activity (DNA vs. RNA). Hydrocarbon-degrading taxa enriched on polyethylene and polyvinyl chloride substrates relative to other polymers and were more commonly recovered in samples proximal to New York City. These differences in MP colonisation could indicate phenotypic adaptation processes resulting from increased exposure to urban plastic runoff as well as differences in carbon bioavailability across polymer types. Shifts in MP community potential across urban coastal contaminant gradients and polymer types improve our understanding of environmental plastic discharge impacts toward biogeochemical cycling across the global ocean.
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Affiliation(s)
- Cody E Garrison
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
| | | | | | - Anthony Helfrich
- School of Professional Development, Stony Brook University, Stony Brook, New York, USA
| | - Gordon T Taylor
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, USA
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83
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Wakchaure VN, DeSnoo W, Laconsay CJ, Leutzsch M, Tsuji N, Tantillo DJ, List B. Catalytic asymmetric cationic shifts of aliphatic hydrocarbons. Nature 2024; 625:287-292. [PMID: 38200298 PMCID: PMC10781632 DOI: 10.1038/s41586-023-06826-7] [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: 07/07/2023] [Accepted: 11/02/2023] [Indexed: 01/12/2024]
Abstract
Asymmetric catalysis is an advanced area of chemical synthesis, but the handling of abundantly available, purely aliphatic hydrocarbons has proven to be challenging. Typically, heteroatoms or aromatic substructures are required in the substrates and reagents to facilitate an efficient interaction with the chiral catalyst. Confined acids have recently been introduced as tools for homogenous asymmetric catalysis, specifically to enable the processing of small unbiased substrates1. However, asymmetric reactions in which both substrate and product are purely aliphatic hydrocarbons have not previously been catalysed by such super strong and confined acids. We describe here an imidodiphosphorimidate-catalysed asymmetric Wagner-Meerwein shift of aliphatic alkenyl cycloalkanes to cycloalkenes with excellent regio- and enantioselectivity. Despite their long history and high relevance for chemical synthesis and biosynthesis, Wagner-Meerwein reactions utilizing purely aliphatic hydrocarbons, such as those originally reported by Wagner and Meerwein, had previously eluded asymmetric catalysis.
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Affiliation(s)
- Vijay N Wakchaure
- Max Planck Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - William DeSnoo
- Department of Chemistry, University of California, Davis, Davis, CA, USA
| | - Croix J Laconsay
- Department of Chemistry, University of California, Davis, Davis, CA, USA
| | - Markus Leutzsch
- Max Planck Institut für Kohlenforschung, Mülheim an der Ruhr, Germany
| | - Nobuya Tsuji
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis, Davis, CA, USA.
| | - Benjamin List
- Max Planck Institut für Kohlenforschung, Mülheim an der Ruhr, Germany.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan.
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84
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Berrigan D, Freedman ND. Invited Perspective: Polyaromatic Hydrocarbons in Alcohol-An Unappreciated Carcinogenic Mechanism? Environ Health Perspect 2024; 132:11302. [PMID: 38241190 PMCID: PMC10798426 DOI: 10.1289/ehp14255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/05/2023] [Accepted: 12/19/2023] [Indexed: 01/21/2024]
Affiliation(s)
- David Berrigan
- Division of Cancer Control and Population Sciences, Behavioral Research Program, Health Behaviors Research Branch, National Cancer Institute, Rockville, Maryland, USA
| | - Neal D. Freedman
- Division of Cancer Control and Population Sciences, Behavioral Research Program, Tobacco Control Research Branch, National Cancer Institute, Rockville, Maryland, USA
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85
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Yuan L, Wang K, Zhao Q, Yang L, Wang G, Jiang M, Li L. An overview of in situ remediation for groundwater co-contaminated with heavy metals and petroleum hydrocarbons. J Environ Manage 2024; 349:119342. [PMID: 37890298 DOI: 10.1016/j.jenvman.2023.119342] [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: 06/20/2023] [Revised: 10/11/2023] [Accepted: 10/14/2023] [Indexed: 10/29/2023]
Abstract
Groundwater is an important component of water resources. Mixed pollutants comprising heavy metals (HMs) and petroleum hydrocarbons (PHs) from industrial activities can contaminate groundwater through such processes as rainfall infiltration, runoff and discharge, which pose direct threats to human health through the food chain or drinking water. In situ remediation of contaminated groundwater is an important way to improve the quality of a water environment, develop water resources and ensure the safety of drinking water. Bioremediation and permeable reactive barriers (PRBs) were discussed in this paper as they were effective and affordable for in situ remediation of complex contaminated groundwater. In addition, media types, technology combinations and factors for the PRBs were highlighted. Finally, insights and outlooks were presented for in situ remediation technologies for complex groundwater contaminated with HMs and PHs. The selection of an in situ remediation technology should be site specific. The remediation of complex contaminated groundwater can be approached from various perspectives, including the development of economical materials, the production of slow-release and encapsulated materials, and a combination of multiple technologies. This review is expected to provide technical guidance and assistance for in situ remediation of complex contaminated groundwater.
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Affiliation(s)
- Luzi Yuan
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Kun Wang
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Qingliang Zhao
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Guangzhi Wang
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Miao Jiang
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Lili Li
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, China
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86
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Brzeszcz J, Steliga T, Ryszka P, Kaszycki P, Kapusta P. Bacteria degrading both n-alkanes and aromatic hydrocarbons are prevalent in soils. Environ Sci Pollut Res Int 2024; 31:5668-5683. [PMID: 38127231 PMCID: PMC10799122 DOI: 10.1007/s11356-023-31405-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/03/2023] [Indexed: 12/23/2023]
Abstract
This study was undertaken to determine the distribution of soil bacteria capable of utilizing both n-alkanes and aromatic hydrocarbons. These microorganisms have not been comprehensively investigated so far. Ten contaminated (4046-43,861 mg of total petroleum hydrocarbons (TPH) kg-1 of dry weight of soil) and five unpolluted (320-2754 mg TPH kg-1 of dry weight of soil) soil samples from temperate, arid, and Alpine soils were subjected to isolation of degraders with extended preferences and shotgun metagenomic sequencing (selected samples). The applied approach allowed to reveal that (a) these bacteria can be isolated from pristine and polluted soils, and (b) the distribution of alkane monooxygenase (alkB) and aromatic ring hydroxylating dioxygenases (ARHDs) encoding genes is not associated with the contamination presence. Some alkB and ARHD genes shared the same taxonomic affiliation; they were most often linked with the Rhodococcus, Pseudomonas, and Mycolicibacterium genera. Moreover, these taxa together with the Paeniglutamicibacter genus constituted the most numerous groups among 132 culturable strains growing in the presence of both n-alkanes and aromatic hydrocarbons. All those results indicate (a) the prevalence of the hydrocarbon degraders with extended preferences and (b) the potential of uncontaminated soil as a source of hydrocarbon degraders applied for bioremediation purposes.
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Affiliation(s)
- Joanna Brzeszcz
- Department of Microbiology, Oil and Gas Institute - National Research Institute, ul. Lubicz 25A, 31-503, Kraków, Poland.
| | - Teresa Steliga
- Department of Production Technology of Reservoir Fluids, Oil and Gas Institute - National Research Institute, ul. Lubicz 25A, 31-503, Kraków, Poland
| | - Przemysław Ryszka
- Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University in Kraków, ul. Gronostajowa 7, 30-387, Kraków, Poland
| | - Paweł Kaszycki
- Department of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Al. Mickiewicza 21, 31-425, Kraków, Poland
| | - Piotr Kapusta
- Department of Microbiology, Oil and Gas Institute - National Research Institute, ul. Lubicz 25A, 31-503, Kraków, Poland
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Costa DB, de Medeiros Melo Neto O, Luz PMSG, de Figueiredo Lopes Lucena LC, de Figueiredo Lopes Lucena AE. Influence of aging, RAP content, and recycling agent on the performance of asphalt mixtures. Environ Sci Pollut Res Int 2024; 31:1419-1441. [PMID: 38040884 DOI: 10.1007/s11356-023-31263-4] [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] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
A great complexity limits its use as the degree of aging of the asphalt binder of the RAP is a determinant for the interaction with the new binder and recycling agents to design asphalt mixtures with reclaimed asphalt pavement (RAP). One of the ways to analyze the level of interaction between the aged binder and the recycling agent is through the analysis of the performance of the mixtures after the accelerated aging of the samples in the laboratory. Thus, this paper evaluated the mechanical performance of asphalt mixtures with high contents of RAP (50%, 75%, and 100%) and organic type recycling agents (residual engine oil) and surfactant (ADCAP WM), submitted to aging protocols short and long term. The data obtained verified the feasibility of adding up to 75% of RAP in the recycled mixtures. However, detailed monitoring of its execution and performance throughout its useful life is necessary. Fatigue and flexural fracture data were highly altered by aging conditioning, evidencing the reduction in the performance of the compositions of the recycled mixtures. The statistical test showed significance for the parameters RAP content and type/content of the recycling agent used. In addition, there was an increase in the deformation capacity and better resistance to aging and cracking with the incorporation of the surfactant recycling agent.
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Affiliation(s)
- Daniel Beserra Costa
- Department of Civil Engineering, Federal University of Campina Grande, Aprígio Veloso 882, Campina Grande, 58428-830, Brazil
| | - Osires de Medeiros Melo Neto
- Department of Civil Engineering, Federal University of Campina Grande, Aprígio Veloso 882, Campina Grande, 58428-830, Brazil
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88
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Murayama K, Ohtsuki T. A simple method for the preparation of single cells and regeneration of colonies of Botryococcus braunii NIES836. J Microbiol Methods 2024; 216:106859. [PMID: 37995829 DOI: 10.1016/j.mimet.2023.106859] [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: 10/26/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023]
Abstract
Botryococcus braunii, a colonial alga, is known for notably slow growth; however, the growth rate and hydrocarbon productivity are expected to be improved using genetic modification techniques. Nevertheless, B. braunii has a hydrocarbon-rich extracellular matrix (ECM), and the ECM is a major barrier to DNA transformation. To analyse and utilize genetically modified B. braunii, it is essential to regenerate genetically homogeneous colonies derived from single cells. In this study, we developed a novel, simple method for harvesting viable single cells of B. braunii by centrifugation of the culture and subsequent filtration alone. The harvest of single cells was made possible by culturing B. braunii colonies in AF6 medium until the depletion of nitrogen and phosphorus sources and then releasing the single cells in colonies into the medium. Twenty-day culture of single cells in a 96-well plate resulted in 96% regeneration of colonies, and the regeneration of colonies was also confirmed on agar medium. This is the first report of colony regeneration from single cells of B. braunii. We believe that our method developed in this study will contribute greatly to the advancement of genetic modification techniques for B. braunii.
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Affiliation(s)
- Kengo Murayama
- Department of Integrated Applied Life Science, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Takashi Ohtsuki
- Department of Integrated Applied Life Science, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan.
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89
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Liu Y, Zhao X, Wang X, Ding A, Zhang D. Application of whole-cell bioreporters for ecological risk assessment and bioremediation potential evaluation after a benzene exceedance accident in groundwater in Lanzhou, China. Sci Total Environ 2024; 906:167846. [PMID: 37844638 DOI: 10.1016/j.scitotenv.2023.167846] [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: 07/14/2023] [Revised: 10/12/2023] [Accepted: 10/12/2023] [Indexed: 10/18/2023]
Abstract
Oil spill events challenge human health and ecosystem safety, which are priority concerned issues for sustainable development. There is then an increasing demand of tools for ecological risks assessment at contaminated sites. In this study, we introduced two whole-cell bioreporters, ADPWH_alk and ADPWH_recA, to measure the available n-alkanes and the genotoxicities of total petroleum hydrocarbons in soils and groundwater which were contaminated by the Benzene Exceedance Accident in Lanzhou, China. Comparing to traditional chemical analysis methods, the whole-cell bioreporter method could provide risk assessment on cell level within a shorter time and a less cost, which is economical and environment friendly. The highest contents of available alkanes in soil and groundwater were 18,737 mg/kg and 308.4 mg/L, respectively. In addition, the available n-alkanes significantly (p < 0.01) correlated to chemical analysis of total n-alkanes. The highest genotoxicity level was found in soil and groundwater samples with lower TPHs concentration (4338.0 mg/kg and 1.4 mg/L Mitomycin C equivalent), suggesting the significant impacts of geochemical variables and alkane availability on the ecological risks of petroleum contamination. Combining chemical analysis and whole-cell bioreporter results, bioremediation strategies were suggested for groundwater and soils with higher n-alkane availability and lower ecological risks, whereas chemical oxidation were suggested for other contaminated sites. For the first time, we mapped the distribution of available n-alkanes and petroleum toxicities in a large scale soil-groundwater system using whole-cell bioreporters, showing their huge potential for rapid contaminant detection and fast risk assessment.
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Affiliation(s)
- Yueqiao Liu
- Experiment and Practice Innovation Education Center, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing Normal University, Beijing 100875, PR China
| | - Xiaohui Zhao
- China Institute of Water Resources and Hydropower Research, Beijing 100038, PR China
| | - Xinzi Wang
- School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Aizhong Ding
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
| | - Dayi Zhang
- College of New Energy and Environment, Jilin University, Changchun 130021, PR China; Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun 130021, PR China.
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90
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Onwujekwe EC, Ogbonna JC, Eze CN. Remediation of spent engine oil-contaminated soil through biostimulation and bioaugmentation with sodium dodecyl sulphate (SDS) and indigenous hydrocarbonoclastic bacterial isolates. World J Microbiol Biotechnol 2023; 40:50. [PMID: 38145436 DOI: 10.1007/s11274-023-03864-1] [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: 07/04/2023] [Accepted: 11/30/2023] [Indexed: 12/26/2023]
Abstract
Pollution caused by spent engine oil has become a major global ecological concern as it constitutes a big threat to plants, animals, microorganisms and the soil ecosystem. This study was undertaken to examine the remediation of spent engine oil-contaminated soil through biostimulation and bioaugmentation with sodium dodecyl sulphate and indigenous hydrocarbonoclastic bacterial isolates. Twelve mesocosms were organized into four groups designated G1, G2, G3 and G4 and each filled with 2.5 kg of soil samples. Each group was composed of three mesocosms to produce a triplicate setup. G1 contained pristine soil which served as a positive control. G2 contained a total petroleum hydrocarbon (TPH) of 913.333 mg/kg in the untreated oil-polluted soil which served as a negative control. G3 contained a TPH of 913.333 mg/kg in the polluted soil inoculated with indigenous hydrocarbonoclastic bacterial isolates. G4 contained a TPH of 913.333 mg/kg in the polluted soil mixed with bacterial consortium and sodium dodecyl sulphate. The level of pollution was 36.5% in the triplicate setup G2, G3 and G4. Fourier Transform Infrared spectroscopy was used to determine the degree of hydrocarbon degradation. The initial TPH value of 913.33 mg/kg was reduced by 84.44% (142 mg/kg) in soil inoculated with indigenous hydrocarbonoclastic bacterial isolates and by 88.28% (106.66 mg/kg) in biostimulated soil. Result of this study show that soil stimulation involving bacterial consortium and sodium dodecyl sulphate was more efficient than bioaugmentation strategy alone used in the remediation of spent engine oil-polluted soil.
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Affiliation(s)
- Emmanuel Chijioke Onwujekwe
- Department of Microbiology, University of Nigeria Nsukka, Enugu, Nigeria.
- Department of Biological Sciences, Coal City University Enugu, Enugu, Nigeria.
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91
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Landskroner EA, Tsai CSJ. Occupational exposures and cancer risk in commercial laundry and dry cleaning industries: a scoping review. BMC Public Health 2023; 23:2561. [PMID: 38129859 PMCID: PMC10740271 DOI: 10.1186/s12889-023-17306-y] [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] [Received: 08/09/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND The laundry and dry cleaning industries are critical for maintaining cleanliness and hygiene in our daily lives. However, they have also been identified as sources of hazardous chemical exposure for workers, leading to potentially severe health implications. Despite mounting evidence that solvents like perchloroethylene and trichloroethylene are carcinogenic, they remain commonly used in the industry. Additionally, while alternative solvents are increasingly being utilized in response to indications of adverse health and environmental effects, there remains a significant gap in our understanding of the potential risks associated with exposure to these new agents. METHODS This study aims to identify gaps in the literature concerning worker exposure to contemporary toxic chemicals in the laundry and dry cleaning industry and their associated carcinogenic risks. A scoping review of peer-reviewed publications from 2012 to 2022 was conducted to achieve this objective, focusing on studies that detailed chemical exposures, sampling methods, and workers within the laundry and dry cleaning sector. RESULTS In this scoping review, 12 relevant papers were assessed. A majority (66%) examined perchloroethylene exposure, with one notable finding revealing that biomarkers from dry cleaners had significant micronuclei frequency and DNA damage, even when exposed to PCE at levels below occupational exposure limits. Similarly, another study supported these results, finding an increase in early DNA damage among exposed workers. Separate studies on TCE and benzene presented varied exposure levels and health risks, raising concern due to their IARC Group 1 carcinogen classification. Information on alternative solvents was limited, highlighting gaps in health outcome data, exposure guidelines, and carcinogenic classifications. CONCLUSION Research on health outcomes, specifically carcinogenicity from solvent exposure in dry cleaning, is limited, with 66% of studies not monitoring health implications, particularly for emerging solvents. Further, findings indicated potential DNA damage from perchloroethylene, even below set occupational limits, emphasizing the need to reevaluate safety limits. As alternative solvents like butylal and high-flashpoint hydrocarbons become more prevalent, investigations into the effects of their exposure are necessary to safeguard workers' health. This scoping review is registered with the Open Science Framework, registration DOI: https://doi.org/10.17605/OSF.IO/Q8FR3 .
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Affiliation(s)
- Emma Ann Landskroner
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California, 650 Charles E. Young Drive S., MC 177220, 90095-1735, 90095-1735, Los Angeles, California, United States
| | - Candace Su-Jung Tsai
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California, 650 Charles E. Young Drive S., MC 177220, 90095-1735, 90095-1735, Los Angeles, California, United States.
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92
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Groves JT, Feng L, Austin RN. Structure and Function of Alkane Monooxygenase (AlkB). Acc Chem Res 2023; 56:3665-3675. [PMID: 38032826 DOI: 10.1021/acs.accounts.3c00590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
ConspectusEvery year, perhaps as much as 800 million tons of hydrocarbons enters the environment; alkanes make up a large percentage of it. Most are transformed by organisms that utilize these molecules as sources of energy and carbon. Both aerobic and anaerobic alkane transformation chemistries exist, capitalizing on the presence of alkanes in both oxic and anoxic environments. Over the past 40 years, tremendous progress has been made in understanding the structure and mechanism of enzymes that catalyze the transformation of methane. By contrast, progress involving enzymes that transform liquid alkanes has been slower with the first structures of AlkB, the predominant aerobic alkane hydroxylase in the environment, appearing in 2023. Because of the fundamental importance of C-H bond activation chemistries, interest in understanding how biology activates and transforms alkanes is high.In this Account, we focus on steps we have taken to understand the mechanism and structure of alkane monooxygenase (AlkB), the metalloenzyme that dominates the transformation of liquid alkanes in the environment (not to be confused with another AlkB that is an α-ketogluturate-dependent enzyme involved in DNA repair). First, we briefly describe what is known about the prevalence of AlkB in the environment and its role in the carbon cycle. Then we review the key findings from our recent high-resolution cryoEM structure of AlkB and highlight important similarities and differences in the structures of members of class III diiron enzymes. Functional studies, which we summarize, from a number of single residue variants enable us to say a great deal about how the structure of AlkB facilitates its function. Next, we overview work from our laboratories using mechanistically diagnostic radical clock substrates to characterize the mechanism of AlkB and contextualize the results we have obtained on AlkB with results we have obtained on other alkane-oxidizing enzymes and explain these results in light of the enzyme's structure. Finally, we integrate recent work in our laboratories with information from prior studies of AlkB, and relevant model systems, to create a holistic picture of the enzyme. We end by pointing to critical questions that still need to be answered, questions about the electronic structure of the active site of the enzyme throughout the reaction cycle and about whether and to what extent the enzyme plays functional roles in biology beyond simply initiating the degradation of alkanes.
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Affiliation(s)
- John T Groves
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Liang Feng
- Department of Molecular and Cellular Physiology, Stanford University, Stanford, California 94305, United States
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Ahmad N, Asif MF, Ahmad N, Ahmed U, Abdul Jameel AG. Innovative parallel synthesis of 5-nonanone and furfural from lignocellulosic biomass accompanied by deep economic analysis. J Environ Manage 2023; 348:119251. [PMID: 37820435 DOI: 10.1016/j.jenvman.2023.119251] [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: 03/22/2023] [Revised: 09/18/2023] [Accepted: 10/02/2023] [Indexed: 10/13/2023]
Abstract
An integrated strategy is developed to utilize all three primary components (cellulose, hemicellulose, and lignin) of lignocellulosic biomass for the coproduction of hydrocarbon fuel (5-nonanone) and bio-chemicals (furfural and high purity lignin). After biomass fractionation, (1) 5-nonanone is produced with high yield of 89% using cellulose-derived γ-valerolactone (GVL), which can potentially serve as a platform molecule for the production of liquid hydrocarbon fuels for the transportation sector; (2) furfural, a valuable platform chemical, is produced using hemicellulose; and (3) production of high-purity lignin, which can be used to produce carbon foams or battery anodes. Separation subsystems are designed to effectively recover the solvents for reuse in the conversion processes, which ultimately improves the economic feasibility of the integrated process, resulting in achieving lower minimum selling price (MSP) of $5.47 GGE-1 for 5-nonanone compared to market price. Heat pump is introduced to perform heat integration, which reduces utility requirements more than 85%. Finally, a wide range of techno-economic analysis is performed to highlight the major cost and technological drivers of the integrated process.
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Affiliation(s)
- Nauman Ahmad
- Department of Chemical and Biological Engineering, Monash University, Clayton, Australia.
| | - Moied Faizan Asif
- Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan.
| | - Nabeel Ahmad
- Interdisciplinary Research Center for Refining and Advanced Chemicals, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
| | - Usama Ahmed
- Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia; Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
| | - Abdul Gani Abdul Jameel
- Interdisciplinary Research Center for Refining and Advanced Chemicals, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia; Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
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Venkatachalam J, Mohan H, Seralathan KK. Significance of Herbaspirillum sp. in biodegradation and biodetoxification of herbicides, pesticides, hydrocarbons and heavy metals - A review. Environ Res 2023; 239:117367. [PMID: 37827364 DOI: 10.1016/j.envres.2023.117367] [Citation(s) in RCA: 1] [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: 08/15/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
In today's industrialized world, contamination of soil and water with various substances has emerged as a pressing concern. Bioremediation, with its advantages of degradation or detoxification, non-polluting nature, and cost-effectiveness, has become a promising method due to technological advancements. Among the bioremediation agents, bacteria have been highly explored and documented as a productive organism. Recently, few studies have reported on the significance of Herbaspirillum sp., a Gram-negative bacterium, in bioremediating herbicides, pesticides, polycyclic aromatic hydrocarbons, metalloids, and heavy metals, as well as its role in augmenting phytoremediation efforts. Herbaspirillum sp. GW103 leached 66% of Cu from ore materials and significantly enhanced the phytoaccumulation of Pb and Zn in plumule and radical tissues of Zea mays L. plants. Additionally, Herbaspirillum sp. WT00C reduced Se6+ into Se0, resulting in an increased Se0 content in tea plants. Also, Herbaspirillum sp. proved effective in degrading 0.6 mM of 4-chlorophenol, 92.8% of pyrene, 77.4% of fluoranthene, and 16.4% of trifluralin from aqueous solution and soil-water system. Considering these findings, this review underscores the need for further exploration into the pathways of pollutant degradation, the enzymes pivotal in the degradation or detoxification processes, the influence of abiotic factors and pollutants on crucial gene expression, and the potential toxicity of intermediate products generated during the degradation process. This perspective reframes the numerical data to underscore the underutilized potential of Herbaspirillum sp. within the broader context of addressing a significant research gap. This shift in emphasis aligns more closely with the problem-necessity for solution-existing unexplored solution framework.
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Affiliation(s)
- Janaki Venkatachalam
- PG and Research Department of Chemistry, Sri Sarada College for Women, Salem, 636016, Tamil Nadu, India
| | - Harshavardhan Mohan
- Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, South Korea
| | - Kamala-Kannan Seralathan
- Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, 54596, South Korea.
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Tan W, Li X, Zhang P, Yao X, Li J, Jin P, Li K. A fatty acid photodecarboxylase-mimicking photonanozyme with defect-induced enzymatic substrate-binding pockets. J Colloid Interface Sci 2023; 652:1965-1973. [PMID: 37690304 DOI: 10.1016/j.jcis.2023.09.020] [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: 06/12/2023] [Revised: 08/20/2023] [Accepted: 09/04/2023] [Indexed: 09/12/2023]
Abstract
Hydrocarbon synthesis hints at the significance of in-depth investigations and detailed explanations of mimicking fatty acid photodecarboxylase (FAP). Considering the importance of photodecarboxylases in hydrocarbon synthesis, we present the potential of defective semiconductor nanomaterials as a novel type of photonanozymes (PNZs) that mimic enzyme-like performance, serving as alternatives to FAP. Ferrum-doped titanium dioxide (Fe-TiO2) was synthesized to introduce appropriate amounts of surface defects including reduced Ti3+ sites and oxygen vacancies, which reduce the band gap of TiO2 and enhance the visible-light absorption, thereby facilitating efficient charge trapping. Notably, the surface defects of Fe-TiO2 PNZs singularly act as enzymatic substrate-binding pockets that enable efficient carboxylic acid adsorption during the dark process, conversely facilitating the formation of more defects and boosting the FAP-like activity for photocatalytic decarboxylation reactions. This work provides a creative strategy for designing substrate-dependent higher-concentration defects as enzyme-like binding sites on promising PNZs that mimic natural photoenzymes.
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Affiliation(s)
- Wenlong Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China
| | - Xu Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China
| | - Pei Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China
| | - Xuyan Yao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China
| | - Jinzhao Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China
| | - Peng Jin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China
| | - Kun Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, Hunan University, Changsha 410082, PR China.
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96
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Tseng SP, Nelson LJ, Hubble CW, Sutherland AM, Haverty MI, Lee CY. Phylogenetic analyses of Reticulitermes (Blattodea: Rhinotermitidae) from California and other western states: multiple genes confirm undescribed species identified by cuticular hydrocarbons. J Econ Entomol 2023; 116:2135-2145. [PMID: 37797286 DOI: 10.1093/jee/toad182] [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] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/06/2023] [Accepted: 09/16/2023] [Indexed: 10/07/2023]
Abstract
Subterranean termites in the genus Reticulitermes Holmgren 1913 are among the most economically important wood-destroying pests in the western United States. Yet, there remains uncertainty regarding the taxonomy and biology of the species in this genus. The 2 species described as having distributions in this region are the western subterranean termite, Reticulitermes hesperus Banks, and the arid land subterranean termite, Reticulitermes tibialis Banks. Taxonomic studies utilizing cuticular hydrocarbon (CHC) profiles, agonistic behavior, flight phenology, and mitochondrial DNA (mtDNA) suggested that R. hesperus is a species complex comprised of 2 or more sympatric, yet reproductively isolated species. To further delineate these taxa, we examined multiple genes from samples of Reticulitermes collected in the western United States. Alates collected after recent spring and fall mating flights, as well as previously collected workers, were subjected to CHC phenotyping and DNA sequence analyses that targeted mitochondrial cytochrome oxidase subunit II (COII), mitochondrial 16S rRNA, and nuclear Internal Transcribed Spacer 1 and 2 (ITS1 and 2). Phylogenetic analyses conducted also included published sequences of other putative western Reticulitermes species. Results suggest that at least 5 species of Reticulitermes may be present in California and that Reticulitermes in Arizona consistently group into multiple clades, including samples previously identified as R. tibialis in a sister clade. These analyses further support the species status of qualitatively different CHC phenotypes and that alates swarming in spring vs. fall are reproductively isolated species.
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Affiliation(s)
- Shu-Ping Tseng
- Department of Entomology, University of California, 900 University Avenue, Riverside, CA 92521, USA
| | - Lori J Nelson
- USDA Forest Service, Pacific Southwest Research Station, 1731 Research Park Drive, Davis, CA 95618, USA
| | - Casey W Hubble
- University of California Cooperative Extension, 224 W. Winton Ave, Room 134, Hayward, CA 94544, USA
| | - Andrew M Sutherland
- University of California Cooperative Extension, 224 W. Winton Ave, Room 134, Hayward, CA 94544, USA
| | - Michael I Haverty
- USDA Forest Service, Pacific Southwest Research Station, 1731 Research Park Drive, Davis, CA 95618, USA
| | - Chow-Yang Lee
- Department of Entomology, University of California, 900 University Avenue, Riverside, CA 92521, USA
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97
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Abstract
Since the inception of the G-quadruplex (G4), enormous attention has been devoted to designing small molecules which can stabilize the G-quadruplex. In contrast, the knowledge about the molecules and mechanisms involved in the destabilization of G4 is sparse, although it is well recognized that destabilization of G4 is important in neurobiology and age-related genetic issues. In this study, it has been shown that amphiphilic molecules having a long hydrocarbon chain can destabilize G4, regardless of its topology, using various biophysical and molecular dynamics simulation methods. It has been observed that the hydrophobic interaction induced by the long hydrocarbon chain of amphiphilic molecules is the main contributor in triggering the destabilization of G4, although hydrogen bonding by the polar part of the molecules also cooperates in the destabilization process. The experiment and simulation studies suggest that a long hydrocarbon chain containing amphiphilic molecules gets aggregated, and their hydrocarbon chain as well as the polar group intrude in the quartet region from the 5' side and interact with guanine bases as well as nearby loops through hydrophobic and electrostatic interactions, which trigger the destabilization of G4.
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Affiliation(s)
- Asim Bisoi
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Sunipa Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Prashant Chandra Singh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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98
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Humes M, Machesky JE, Kim S, Oladeji OJ, Gentner DR, Donahue NM, Presto AA. Primary and Secondary Organic Aerosol Formation from Asphalt Pavements. Environ Sci Technol 2023; 57:20034-20042. [PMID: 37931038 PMCID: PMC10702534 DOI: 10.1021/acs.est.3c06037] [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] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/08/2023]
Abstract
Asphalt is ubiquitous across cities and a source of organic compounds spanning a wide range of volatility and may be an overlooked source of urban organic aerosols. The emission rate and composition depend strongly on temperature, but emissions have been observed at both application temperatures and surface temperatures during warm sunny days. Here we report primary organic aerosol (POA) emissions and secondary organic aerosol (SOA) production from asphalt. We reheated real-world asphalt samples to application-relevant temperatures (∼130 °C) and typical summertime road-surface temperatures (∼55 °C) and then flushed the emitted vapors into an environmental oxidation chamber containing ammonium sulfate seed particles. SOA was then formed following the photo-oxidation of emissions under high-NOx conditions typical of urban atmospheres. We find that POA only forms at application temperature as it does not require further oxidation, whereas SOA forms under both conditions; with the resulting POA and SOA both being semi-volatile. While total OA formation rates were substantially greater under the limited time spent under application conditions, SOA formation from passive asphalt heating presents a potential long-term source, as heating continues for the lifetime of the road surface. This suggests that persistent asphalt solar heating is likely a considerable and continued source of summertime SOA in urban environments.
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Affiliation(s)
- Mackenzie
B. Humes
- Department
of Chemical Engineering, Carnegie Mellon
University, Pittsburgh, Pennsylvania 15213, United States
| | - Jo E. Machesky
- Department
of Chemical & Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Sunhye Kim
- Department
of Mechanical Engineering, Carnegie Mellon
University, Pittsburgh, Pennsylvania 15213, United States
| | - Oladayo J. Oladeji
- Department
of Mechanical Engineering, Carnegie Mellon
University, Pittsburgh, Pennsylvania 15213, United States
| | - Drew R. Gentner
- Department
of Chemical & Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Neil M. Donahue
- Department
of Chemical Engineering, Carnegie Mellon
University, Pittsburgh, Pennsylvania 15213, United States
- Department
of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Albert A. Presto
- Department
of Mechanical Engineering, Carnegie Mellon
University, Pittsburgh, Pennsylvania 15213, United States
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99
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Mehta D, Saboo N. Performance of bio-asphalts: state of the art review. Environ Sci Pollut Res Int 2023; 30:119772-119795. [PMID: 37973777 DOI: 10.1007/s11356-023-30824-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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 10/29/2023] [Indexed: 11/19/2023]
Abstract
The global population spike, rise in industrialization, and highway infrastructure development induce focus on sustainable development. The ever-increasing consumption of non-renewable crude oil and asphalt levies a heavy toll on economic welfare of future generations. This enormous demand of asphalt is due to its wide applicability in flexible pavements. Therefore, the construction industry is exploring the partial substitution of renewable materials in asphalt with a focus on economical, social, and environmental benefits. The current decade has seen a rampant rise of bio-asphalt as an alternative to asphalt. Hence, it is imperative to explore the performance of bio-asphalt for its sustainable applicability. This review comprehensively summarizes the performance of bio-asphalt obtained from various biomass sources. It deals with elemental composition of bio-oil, preparation procedure, rheological performance, mixture performance, and aging mechanism of bio-asphalt along with modification required to improve the performance. The environmental impacts and field application of the bio-asphalts are also discussed.
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100
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Sheppard TJ, Specht DA, Barstow B. Upper limit efficiency estimates for electromicrobial production of drop-in jet fuels. Bioelectrochemistry 2023; 154:108506. [PMID: 37473694 DOI: 10.1016/j.bioelechem.2023.108506] [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: 10/12/2022] [Revised: 07/07/2023] [Accepted: 07/08/2023] [Indexed: 07/22/2023]
Abstract
Microbes which participate in extracellular electron uptake (EEU) or H2 oxidation have the ability to manufacture organic compounds using electricity as the primary source of metabolic energy. So-called electromicrobial production could be valuable to efficiently synthesize drop-in jet fuels using renewable energy. Here, we calculate the upper limit electrical-to-fuel conversion efficiency for a model jet fuel blend containing 85% straight-chain alkanes and 15% terpenoids. When using the Calvin cycle for carbon-fixation, the energy conversion efficiency is 37.8-4.3+1.8% when using EEU for electron delivery and 40.1-4.6+0.7% when using H2 oxidation. The production efficiency can be raised to 44.2-3.7+0.5% when using the Formolase formate-assimilation pathway, and to 49.2-2.1+0.3% with the Wood-Ljungdahl pathway. This efficiency can be further raised by swapping the well-known Aldehyde Deformolating Oxygenase (ADO) termination pathway with the recently discovered Fatty Acid Photodecarboxylase (FAP) pathway. If these systems were supplied with electricity from a maximally-efficient silicon solar photovoltaic, even the least efficient pathway exceeds the maximum solar-to-fuel efficiency of all known forms of photosynthesis.
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Affiliation(s)
- Timothy J Sheppard
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - David A Specht
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Buz Barstow
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
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