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Zou Q, Wu Y, Zhang S, Li S, Li S, Su Y, Zhang L, Li Q, Zou H, Zhang X, Wang T, Liang S, Yang J, Li C. Escherichia coli and HPV16 coinfection may contribute to the development of cervical cancer. Virulence 2024; 15:2319962. [PMID: 38380669 PMCID: PMC10883084 DOI: 10.1080/21505594.2024.2319962] [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: 08/07/2023] [Accepted: 02/09/2024] [Indexed: 02/22/2024] Open
Abstract
Persistent human papillomavirus HPV infection is a necessary but insufficient condition for cervical cancer. Microorganisms are crucial environmental factors in cancers susceptibility and progression, recently attracting considerable attention. This study aimed to determine the infection status and relationship between high-risk HPV (HR-HPV) and lower genital tract infectious pathogens in cervical cancer and its precursors. From a retrospective and a prospective cohort analysis, Escherichia coli (E. coli) dominated the pathogens isolated from cervical discharges, and an isolation rate uptrend has been shown recently. HPV16 and E. coli's coinfection rate gradually increased with the severity of cervical intraepithelial neoplasia. The adhesion and invasion abilities of the isolated E. coli to HPV16-positive SiHa cells were evaluated in vitro. The TCGA database and cervical tissues samples analysis showed that IL-10 was upregulated in cervical cancer. IL-10 expression levels increased in tissue samples with the severity of cervical cancer and its precursors with HPV16 and E. coli coinfection. Although no significant changes in IL-10 production were observed in the co-culture supernatant, we hypothesized that Treg immune cells in the tumour microenvironment might be responsible for the local IL-10 upregulation, according to our data showing Foxp3 upregulation and an upward trend with the cervical intraepithelial neoplasia grading to cancer and tumours with E. coli and HPV16 coinfection. Our data provide insights into the possible role of E. coli in cervical cancer progression and suggest that the application of HPV and E. coli screening programs may be an effective strategy to relieve the burden of cervical cancer and its precursor lesions.
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Affiliation(s)
- Qin Zou
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Yingying Wu
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - ShuaiShuai Zhang
- Department of Clinical Laboratory, Chongqing University Three Gorges Hospital, Chongqing, China
| | - Shu Li
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Siyue Li
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Yan Su
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Lei Zhang
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Qian Li
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Hua Zou
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Xinyuan Zhang
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Teng Wang
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shuang Liang
- Department of Pathology, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Jun Yang
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
| | - Chunli Li
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing Health Center for Women and Children, Chongqing, China
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2
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Clark R, Park SY, Bradley EW, Mansky K, Tasca A. Mouse mandibular-derived osteoclast progenitors have differences in intrinsic properties compared with femoral-derived progenitors. JBMR Plus 2024; 8:ziae029. [PMID: 38606149 PMCID: PMC11008737 DOI: 10.1093/jbmrpl/ziae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 04/13/2024] Open
Abstract
Craniofacial osteoclasts are essential for site-specific processes such as alveolar bone resorption, tooth eruption, and orthodontic tooth movement. Much of the current understanding of osteoclast development and function comes from studies using long bone-derived cells. Minimal investigation has been done to explore skeletal site differences. The overall goal of this study was to determine if mandibular- and femoral-derived osteoclasts represent distinct populations. To test this hypothesis, bone marrow cells were initially analyzed from the mandible and femur of 2-month-old mice. It was shown that mandibular-derived osteoclasts have enhanced size (mm2) compared with femoral-derived osteoclasts. Since bone marrow macrophages are a heterogenous population, we additionally selected for monocytes and demonstrated that mandibular-derived monocytes also form osteoclasts with increased size compared with femoral-derived monocytes. Osteoclast precursor populations from both skeletal sites were analyzed by flow cytometry. A newly described Ly6CHigh+ population as well as the Ly6Cint population was increased in the mandibular-derived cells. The difference in differentiation potential between monocyte cultures suggests that the increase in the Ly6CHigh+ population may explain the enhanced differentiation potential in mandibular-derived cells. Monocyte genes such as Pu.1, C/ebp-a, and Prdm1 are increased in expression in mandibular-derived monocytes compared with femoral-derived monocytes. As expected with enhanced differentiation, osteoclast genes including Nfatc1, Dc-stamp, Ctsk, and Rank are upregulated in mandibular-derived osteoclast precursors. Future studies will determine how changes in the environment of the mandible lead to changes in percentages of osteoclast progenitors and their differentiation potential.
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Affiliation(s)
- Rachel Clark
- Department of Developmental and Surgical Sciences, Oral Biology Graduate Program, University of Minnesota School of Dentistry, Minneapolis, MN 55455, United States
| | - Soo Y Park
- School of Dentistry, University of Minnesota, Minneapolis, MN 55455, United States
| | - Elizabeth W Bradley
- Department of Orthopedic Surgery, University of Minnesota, Minneapolis, MN 55455, United States
| | - Kim Mansky
- Division of Orthodontics, Department of Developmental and Surgical Sciences, University of Minnesota School of Dentistry Minneapolis, Minneapolis, MN 55455, United States
| | - Amy Tasca
- Division of Orthodontics, Department of Developmental and Surgical Sciences, University of Minnesota School of Dentistry Minneapolis, Minneapolis, MN 55455, United States
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Pickard HM, Haque F, Sunderland EM. Bioaccumulation of Perfluoroalkyl Sulfonamides (FASA). Environ Sci Technol Lett 2024; 11:350-356. [PMID: 38645703 PMCID: PMC11027762 DOI: 10.1021/acs.estlett.4c00143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Hundreds of sites across the United States have high concentrations of perfluoroalkyl sulfonamides (FASA), but little is known about their propensity to accumulate in fish. FASA are precursors to terminal per- and polyfluoroalkyl substances (PFAS) that are abundant in diverse consumer products and aqueous film-forming foams manufactured using electrochemical fluorination (ECF AFFF). In this study, FASA with C3-C8 carbon chain lengths were detected in all fish samples from surface waters up to 8 km downstream of source zones with ECF AFFF contamination. Short-chain FASA ≤ C6 have rarely been included in routine screening for PFAS, but availability of new standards makes such analyses more feasible. Bioaccumulation factors (BAF) for FASA were between 1 and 3 orders of magnitude greater than their terminal perfluoroalkyl sulfonates. Across fish species, BAF for FASA were greater than for perfluorooctanesulfonate (PFOS), which is presently the focus of national advisory programs. Similar concentrations of the C6 FASA (<0.36-175 ng g-1) and PFOS (0.65-222 ng g-1) were detected in all fish species. No safety thresholds have been established for FASA. However, high concentrations in fish next to contaminated sites and preliminary findings on toxicity suggest an urgent need for consideration by fish advisory programs.
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Affiliation(s)
- Heidi M Pickard
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Faiz Haque
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Elsie M Sunderland
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts 02115, United States
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Soderholm A, Mansfield D, Groshkova T, Sedefov R, Griffiths P. Commentary on Pardo et al.: Whatever the past situation, drug precursor chemicals may in future represent an important source for synthetic drug production in Afghanistan and surrounding countries. Addiction 2024. [PMID: 38570899 DOI: 10.1111/add.16496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 04/05/2024]
Affiliation(s)
- Alexander Soderholm
- European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Lisbon, Portugal
| | | | - Teodora Groshkova
- European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Lisbon, Portugal
| | - Roumen Sedefov
- European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Lisbon, Portugal
| | - Paul Griffiths
- European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Lisbon, Portugal
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Kim J, Lee D, Bae J, Lee T, Jeon H. Atomic layer deposition of SnS 2film on a precursor pre-treated substrate. Nanotechnology 2024; 35:205705. [PMID: 38306693 DOI: 10.1088/1361-6528/ad2573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
Two-dimensional (2D) materials are attracting attention because of their outstanding physical, chemical, and electrical properties for applications of various future devices such as back-end-of-line field effect transistor (BEOL FET). Among many 2D materials, tin disulfide (SnS2) material is advantageous for low temperature process due to low melting point that can be used for flexible devices and back-end-of-line (BEOL) devices that require low processing temperature. However, low temperature synthesis method has a poor crystallinity for applying to various semiconductor industries. Hence, many studies of improving crystallinity of tin disulfide film are studied for enhancing the quality of film. In this work, we propose a precursor multi-dosing method before deposition of SnS2. This precursor pre-treatment was conducted by atomic layer deposition cycles for more adsorption of precursors to the substrate before deposition. The film quality was analyzed by x-ray diffraction, Raman, transmission electron microscopy, atomic force microscopy and x-ray photoelectron spectroscopy. As a result, more adsorbates by precursor pre-treatment induce higher growth rate and better crystallinity of film.
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Affiliation(s)
- Jungtae Kim
- Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul, 04673, Republic of Korea
| | - Dowwook Lee
- Division of Materials Science and Engineering, Hanyang University, Seoul, 04673, Republic of Korea
| | - Jangho Bae
- Division of Materials Science and Engineering, Hanyang University, Seoul, 04673, Republic of Korea
| | - Taeyoon Lee
- Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul, 04673, Republic of Korea
| | - Hyeongtag Jeon
- Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul, 04673, Republic of Korea
- Division of Materials Science and Engineering, Hanyang University, Seoul, 04673, Republic of Korea
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Sun X, Li J, Yan S. Study on the non-enzymatic browning of lotus rhizome juice during sterilization mediated by 1,2-dicarboxyl and heterocyclic compounds. J Sci Food Agric 2024; 104:362-372. [PMID: 37598410 DOI: 10.1002/jsfa.12931] [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: 05/16/2023] [Revised: 08/11/2023] [Accepted: 08/21/2023] [Indexed: 08/22/2023]
Abstract
BACKGROUND Lotus rhizome juice (LRJ) is susceptible to the Maillard reaction (MR) and caramelization, which tend to cause a reduction in quality and lower consumer acceptance of the product. 1,2-Dicarbonyl compounds (DCs) and heterocyclic compounds have attracted increasing attention as key intermediates responsible for the formation of brown pigments during MR and caramelization. However, little is known about the effects of these two types of compounds on brown pigments in LRJ during sterilization. This study quantified the changes in brown intensity (A420), DCs, and heterocyclic compounds before and after spiking, and identified the precursors and intermediates for brown pigment formation as well as the formation pathways of the intermediates. RESULTS The spiking experiments suggested that spiking with fructose resulted in more 3-deoxyglucosone (3-DG) and 2,3-dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one (DDMP), while that with lysine led to more glucosone (GS) and 2,3-butanedione (2,3-BD) in LRJ. The addition of glucose, asparagine, and glutamine promoted the formation of 5-hydroxymethylfurfural (HMF) significantly, whereas the addition of glucose, lysine, and asparagine resulted in more norfuraneol. Spiking with reducing sugars and amino acids promoted both glyoxal (GO) and methylglyoxal (MGO), and the effect of glucose on GO was particularly significant. Correlation analysis showed that A420 had the highest correlation with 3-DG in the fructose- and lysine-spiked group, and with HMF in the glucose-, asparagine-, and glutamine-spiked groups. CONCLUSION This study revealed that fructose, glucose, asparagine, glutamine, and lysine were essential precursors of MR and caramelization in LRJ during sterilization. 3-Deoxyglucosone and DDMP were mainly produced by caramelization with fructose as the primary precursor, whereas GS and 2,3-BD were primarily formed via MR with lysine catalysis. The MR and caramelization were the main formation pathways of HMF (catalyzed by asparagine and glutamine) and norfuraneol (catalyzed by lysine and asparagine), with glucose as the critical precursor. Methylglyoxal was mainly produced by MR or caramelization, and caramelization was the main formation pathway of GO, with glucose as the precursor. Dor brown pigment formation from fructose and lysine, 3-DG was identified as the most crucial intermediate, while for that from glucose, asparagine, and glutamine, HMF was found to be the most important intermediate. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xianxian Sun
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jie Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
- Department of Science and Technology of Hubei Province, Aquatic Vegetable Preservation & Processing Technology Engineering Center of Hubei Province, Wuhan, Hubei, China
- Engineering Research Center of the Ministry of Education, Engineering Research Center of Ministry of Education for Green Development of Aquatic Biological Industry in Yangtze River Economic Belt, Wuhan, Hubei, China
| | - Shoulei Yan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
- Department of Science and Technology of Hubei Province, Aquatic Vegetable Preservation & Processing Technology Engineering Center of Hubei Province, Wuhan, Hubei, China
- Engineering Research Center of the Ministry of Education, Engineering Research Center of Ministry of Education for Green Development of Aquatic Biological Industry in Yangtze River Economic Belt, Wuhan, Hubei, China
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7
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Sommerfeldt B, Skårderud F, Kvalem IL, Gulliksen K, Holte A. Trajectories of severe eating disorders through pregnancy and early motherhood. Front Psychiatry 2024; 14:1323779. [PMID: 38250265 PMCID: PMC10797066 DOI: 10.3389/fpsyt.2023.1323779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/14/2023] [Indexed: 01/23/2024] Open
Abstract
Background During pregnancy and early motherhood, risks of relapse and worsening are high for women with a history of eating disorders (EDs), as are adverse sequelae for their babies. However, systematic descriptions of the processes that these women undergo through pregnancy, birth, and early motherhood are lacking, as are good descriptions of the various trajectories these women follow through pregnancy and early motherhood. This study addresses both these knowledge gaps. Methods We used a longitudinal research interview design, recruiting a non-clinical sample of 24 women with a history of severe EDs from routine pregnancy controls in five public, local, family health care centers in Norway. The participants were interviewed twice, first during pregnancy and then 4-6 months after delivery. Data were analyzed according to grounded theory. The focus was on modeling the trajectories of EDs through pregnancy, birth, and early motherhood. All the participants were diagnosed (DSM-5) using the Eating Disorder Examination and then completed the Eating Disorder Examination Questionnaire. Results Five perceived trajectories through pregnancy and early motherhood were identified: "The mastering mother," in which an ED pathology seems to be absent through pregnancy and early motherhood; "The inadequate mother," in which the ED pathology worsens before pregnancy, through pregnancy, and early motherhood; "The overwhelmed mother," in which the ED worsens during pregnancy and early motherhood; "The depressed mother," in which the ED is put on hold during pregnancy, but worsens in early motherhood; and "The succeeding mother," in which the ED worsens during pregnancy, but reduces in early motherhood. Discussion ED trajectories through pregnancy and early motherhood vary greatly among women with a history of EDs. This may indicate different psychological dynamics through these phases. A model with five trajectories captures a large degree of the variation. The model may help clinicians' preparedness when dealing with these patients.
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Affiliation(s)
- Bente Sommerfeldt
- Institute for Eating Disorders, Oslo, Norway
- Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo, Norway
| | - Finn Skårderud
- Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
- Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway
| | - Ingela Lundin Kvalem
- Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo, Norway
| | | | - Arne Holte
- Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo, Norway
- Norwegian Institute of Public Health, Oslo, Norway
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Skryabin VY, Shevtsova Y, Novoselova EA. Consequences of 1,4-Butanediol Misuse: A Review. Psychopharmacol Bull 2023; 53:48-53. [PMID: 38076667 PMCID: PMC10698855] [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] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Gamma-hydroxybutyrate (GHB), along with its precursors, 1,4-butanediol (1,4-BD) and gamma-butyrolactone (GBL), are potent central depressant agents widely illicitly used for their euphoric and relaxant effects. The article presents a review of the literature on the 1,4-BD misuse, the clinical picture of intoxication, development of addiction and delirium. The available evidence shows that 1,4-BD is a substance with its own psychoactive effects, a high addiction potential and potentially severe withdrawal symptoms.
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Affiliation(s)
- VYu Skryabin
- Skryabin, MD, PhD, associate professor of addiction psychiatry department, Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation, Moscow, Russian Federation
| | - YuB Shevtsova
- Shevtsova, MD, PhD, leading researcher, Moscow Research and Practical Centre on Addictions of the Moscow Department of Healthcare, Moscow, Russia
| | - E A Novoselova
- Novoselova, MD, PhD, leading researcher, Ministry of Health of the Russian Federation, Moscow, Russia
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9
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Ruyle BJ, Schultes L, Akob DM, Harris CR, Lorah MM, Vojta S, Becanova J, McCann S, Pickard HM, Pearson A, Lohmann R, Vecitis CD, Sunderland EM. Nitrifying Microorganisms Linked to Biotransformation of Perfluoroalkyl Sulfonamido Precursors from Legacy Aqueous Film-Forming Foams. Environ Sci Technol 2023; 57:5592-5602. [PMID: 36972708 PMCID: PMC10100541 DOI: 10.1021/acs.est.2c07178] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 10/03/2022] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 05/28/2023]
Abstract
Drinking water supplies across the United States have been contaminated by firefighting and fire-training activities that use aqueous film-forming foams (AFFF) containing per- and polyfluoroalkyl substances (PFAS). Much of the AFFF is manufactured using electrochemical fluorination by 3M. Precursors with six perfluorinated carbons (C6) and non-fluorinated amine substituents make up approximately one-third of the PFAS in 3M AFFF. C6 precursors can be transformed through nitrification (microbial oxidation) of amine moieties into perfluorohexane sulfonate (PFHxS), a compound of regulatory concern. Here, we report biotransformation of the most abundant C6 sulfonamido precursors in 3M AFFF with available commercial standards (FHxSA, PFHxSAm, and PFHxSAmS) in microcosms representative of the groundwater/surface water boundary. Results show rapid (<1 day) biosorption to living cells by precursors but slow biotransformation into PFHxS (1-100 pM day-1). The transformation pathway includes one or two nitrification steps and is supported by the detection of key intermediates using high-resolution mass spectrometry. Increasing nitrate concentrations and total abundance of nitrifying taxa occur in parallel with precursor biotransformation. Together, these data provide multiple lines of evidence supporting microbially limited biotransformation of C6 sulfonamido precursors involving ammonia-oxidizing archaea (Nitrososphaeria) and nitrite-oxidizing bacteria (Nitrospina). Further elucidation of interrelationships between precursor biotransformation and nitrogen cycling in ecosystems would help inform site remediation efforts.
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Affiliation(s)
- Bridger J. Ruyle
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts 02134, United States
| | - Lara Schultes
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts 02134, United States
| | - Denise M. Akob
- U.S.
Geological Survey, Geology, Energy and Minerals
Science Center, Reston, Virginia 20192, United
States
| | - Cassandra R. Harris
- U.S.
Geological Survey, Geology, Energy and Minerals
Science Center, Reston, Virginia 20192, United
States
| | - Michelle M. Lorah
- U.S.
Geological Survey, Maryland-Delaware-DC
Water Science Center, Baltimore, Maryland 21228, United States
| | - Simon Vojta
- Graduate
School of Oceanography, University of Rhode
Island, Narragansett, Rhode Island 02882, United States
| | - Jitka Becanova
- Graduate
School of Oceanography, University of Rhode
Island, Narragansett, Rhode Island 02882, United States
| | - Shelley McCann
- Department
of Earth and Planetary Sciences, Harvard
University, Cambridge, Massachusetts 02138, United States
| | - Heidi M. Pickard
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts 02134, United States
| | - Ann Pearson
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts 02134, United States
- Department
of Earth and Planetary Sciences, Harvard
University, Cambridge, Massachusetts 02138, United States
| | - Rainer Lohmann
- Graduate
School of Oceanography, University of Rhode
Island, Narragansett, Rhode Island 02882, United States
| | - Chad D. Vecitis
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts 02134, United States
| | - Elsie M. Sunderland
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, Massachusetts 02134, United States
- Department
of Earth and Planetary Sciences, Harvard
University, Cambridge, Massachusetts 02138, United States
- Department
of Environmental Health, Harvard T.H. Chan
School of Public Health, Boston, Massachusetts 02115, United States
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Li Q, Cai Q, Li X, Han E, Sun Y, Lu Y, Cai Z, Yu H. Effects of Palladium Precursors on the Activity of Palladium Nanocatalysts for the Oxidation of Volatile Organic Components. Nanomaterials (Basel) 2023; 13:1189. [PMID: 37049282 PMCID: PMC10097109 DOI: 10.3390/nano13071189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/18/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
To screen a suitable precursor, the effects of palladium salts on performance of Pd nanocatalysts for the oxidation of volatile organic components (VOCs) were investigated. A series of catalysts was prepared by impregnating Pd(NO3)2, PdCl2 and Pd(NH3)4Cl2 on alumina-coated cordierites. These catalysts were characterized by XRF, ICP-OES, XRD, N2 adsorption-desorption, TEM, EDS, Raman spectroscopy, pulse-CO chemisorption, H2-TPR, NH3-TPD, and XPS. Pulse-CO chemisorption and TEM showed that Pd species formed by Pd(NO3)2 have the highest metal dispersion (17.7%), while the other two were aggregating. For the same Pd loading, the higher the metal dispersion, the more the number of PdO species, so the number of PdO particles in the catalyst prepared from Pd (NO3) 2 is the largest. The catalytic oxidation activities of these catalysts were evaluated by ethane and propane. Based on a 99% conversion in the oxidation of ethane and propane at 598 K and 583 K, respectively, the catalyst prepared from Pd(NO3)2 was considered to be the best performing catalyst. The chloride species in precursors can promote the aggregation of Pd species and poison the catalysts. The results show that Pd(NO3)2 is more suitable as the precursor of VOC oxidation catalyst than PdCl2 and Pd(NH3)4Cl2.
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Affiliation(s)
- Qingtao Li
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China;
| | - Qi Cai
- CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China; (Q.C.); (X.L.); (Y.S.); (Y.L.); (Z.C.)
| | - Xiaoyun Li
- CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China; (Q.C.); (X.L.); (Y.S.); (Y.L.); (Z.C.)
| | - Enshan Han
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China;
| | - Yanmin Sun
- CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China; (Q.C.); (X.L.); (Y.S.); (Y.L.); (Z.C.)
| | - Yanfei Lu
- CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China; (Q.C.); (X.L.); (Y.S.); (Y.L.); (Z.C.)
| | - Zhe Cai
- CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China; (Q.C.); (X.L.); (Y.S.); (Y.L.); (Z.C.)
| | - Haibin Yu
- CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China; (Q.C.); (X.L.); (Y.S.); (Y.L.); (Z.C.)
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Onnivello S, Schworer EK, Daunhauer LA, Fidler DJ. Acquisition of cognitive and communication milestones in infants with Down syndrome. J Intellect Disabil Res 2023; 67:239-253. [PMID: 34761472 DOI: 10.1111/jir.12893] [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: 07/30/2020] [Revised: 06/28/2021] [Accepted: 09/22/2021] [Indexed: 05/27/2023]
Abstract
BACKGROUND Understanding the timing of developmental milestones in typical and clinical populations facilitates intervention planning and the early detection of risk for co-occurring conditions. Normative timing of developmental milestone achievement has been established for typically developing children. However, there is little information regarding the timing of cognitive and communication skill acquisition in young children with Down syndrome (DS). The objectives of this study are to (1) provide foundational information regarding the timing of cognitive and communication skill acquisition in infants with DS and (2) facilitate the early identification of infants with risk for co-occurring conditions. METHOD Seventy-four infants with DS (age range: 4-18 months) completed the Bayley Scales of Infant Development-III (Bayley 2006). Individual items from the cognitive and communication scales were selected for analysis. Parents provided information regarding their infant's developmental and family history. RESULTS The percentage of infants who attained each skill was calculated within 2-month age bands. For infants who did not show skill acquisition within each age band, the rates of prematurity, heart defects, corrective heart surgery and significant illness were calculated as well. CONCLUSIONS This study provides foundational information that can contribute to the formulation of a developmental schedule for cognitive and language milestone acquisition in infants with DS.
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Affiliation(s)
- S Onnivello
- Department of Developmental Psychology and Socialization, University of Padova, Padova, Italy
| | - E K Schworer
- Division of Developmental and Behavioral Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - L A Daunhauer
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - D J Fidler
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
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12
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Kruppke I, Sherif F, Richter M, Cherif C. Development of Porous-Polyacrylonitrile-Based Fibers Using Nanocellulose Additives as Precursor for Carbon Fiber Manufacturing. Polymers (Basel) 2023; 15. [PMID: 36771866 DOI: 10.3390/polym15030565] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/12/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Cellulose is a renewable and environmentally friendly raw material that has an important economic and technical impact in several applications. Recently, nanocellulose (NC) presented a promising road to support the manufacturing of functional carbon fibers (CFs), which are considered superior materials for several applications because of their outstanding properties. However, the smooth and limited effective surface areas make CFs virtually useless in some applications, such as energy storage. Therefore, strategies to increase the porosity of CFs are highly desirable to realize their potential. Within this article, we present an approach that focuses on the designing of porous CF precursors using polyacrilonitrile (PAN) and NC additives using a wet spinning method. To enhance the porosity, two jet stretching (50% and 100%) and four NC additive amounts (0 wt.%, 0.1 wt.%, 0.4 wt.% and 0.8 wt.%) have been applied and investigated. In comparison with the reference PAN fibers (without NC additives and stretching), the results showed an increase in specific surface area from 10.45 m2/g to 138.53 m2/g and in total pore volume from 0.03 cm3/g to 0.49 cm3/g. On the other hand, mechanical properties have been affected negatively by NC additives and the stretching process. Stabilization and carbonization processes could be applied in a future study to support the production of multifunctional porous CF.
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13
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Balgooyen S, Remucal CK. Impacts of Environmental and Engineered Processes on the PFAS Fingerprint of Fluorotelomer-Based AFFF. Environ Sci Technol 2023; 57:244-254. [PMID: 36573898 DOI: 10.1021/acs.est.2c06600] [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: 06/17/2023]
Abstract
Forensic analysis can potentially be used to determine per- and polyfluoroalkyl substance (PFAS) sources at contaminated sites. However, fluorotelomer aqueous film-forming foam (AFFF) sources are difficult to identify because the polyfluorinated active ingredients do not have authentic standards and because the parent compounds can undergo transformation and differential transport, resulting in alteration of the PFAS distribution or fingerprint. In this study, we investigate changes in the PFAS fingerprint of fluorotelomer-derived AFFF due to environmental and engineered processes, including groundwater transport, surface water flow, and land application of contaminated biosolids. Fingerprint analysis supplemented by quantification of precursors and identification of suspected active ingredients shows a clear correlation between a fluorotelomer AFFF manufacturer and surface water of nearby Lake Michigan, demonstrating contamination (>100 ng/L PFOA) of the lake due to migration of an AFFF-impacted groundwater plume. In contrast, extensive processing during wastewater treatment and environmental transport results in large changes to the AFFF fingerprint near agricultural fields where contaminated biosolids were spread. At biosolids-impacted sites, the presence of active ingredients confirms contamination by fluorotelomer AFFF. While sediments can retain longer-chain PFAS, this study demonstrates that aqueous samples are most relevant for PFAS fingerprinting in complex sites, particularly where shorter-chain compounds have been used.
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Affiliation(s)
- Sarah Balgooyen
- Department of Civil and Environmental Engineering, University of Wisconsin - Madison, 660 N. Park Street, Madison, Wisconsin 53706, United States
| | - Christina K Remucal
- Department of Civil and Environmental Engineering, University of Wisconsin - Madison, 660 N. Park Street, Madison, Wisconsin 53706, United States
- Environmental Chemistry and Technology Program, University of Wisconsin - Madison, 660 N. Park Street, Madison, Wisconsin 53706, United States
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14
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Douglas SP, Faria EN, Mrig S, Zhou Y, Santoni L, Clancy AJ, Knapp CE. Tris(β-ketoiminate) Aluminium(III) Compounds as Aluminium Oxide Precursors. Chempluschem 2023; 88:e202200411. [PMID: 36646521 DOI: 10.1002/cplu.202200411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/22/2022] [Indexed: 12/24/2022]
Abstract
Precursor design is the crucial step in tailoring the deposition profile towards a multitude of functional materials. Most commercially available aluminium oxide precursors require high processing temperatures (>500 °C). Herein, we report the tuning of the decomposition profile (200-350 °C) of a range of octahedrally coordinated tris(β-ketoiminate) aluminium complexes of the type [Al(MeCN(R)CHC=OMe)3 ], by varying the R substituents in the ligands. The complexes are derived from the reaction of trimethylamine alane (TMAA) and a series of N-substituted β-ketoiminate ligands (R-acnacH, R=Me, Et, i Pr, Ph) with varying R-substituents sizes. When the more sterically encumbered ligand (R=Mes) was used, the Al atom became five-coordinate, therefore representing the threshold to octahedral coordination around the metal in these type of compounds, which, consequently, lead to a change of decomposition profile. The resulting compounds have been characterised by NMR spectroscopy, mass spectrometry, elemental analysis and single crystal X-ray diffraction. [Al(MeCN(Me)CHC=OMe)3 ] has been used as a single source precursor for the deposition of Al2 O3 . Thin films were deposited via aerosol assisted chemical vapour deposition (AACVD), with toluene as the solvent, and were analysed using SEM, EDX and XPS.
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Affiliation(s)
- Samuel P Douglas
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Erica N Faria
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Shreya Mrig
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Ye Zhou
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Leonardo Santoni
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Adam J Clancy
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
| | - Caroline E Knapp
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ, London, UK
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15
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Gatou MA, Lagopati N, Vagena IA, Gazouli M, Pavlatou EA. ZnO Nanoparticles from Different Precursors and Their Photocatalytic Potential for Biomedical Use. Nanomaterials (Basel) 2022; 13:nano13010122. [PMID: 36616030 PMCID: PMC9823729 DOI: 10.3390/nano13010122] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 05/26/2023]
Abstract
Semiconductor photocatalysts, particularly ZnO nanoparticles, were synthesized via the precipitation method using four different precursors (zinc acetate/zinc nitrate/zinc sulfate/zinc chloride) and compared, according to their optical, structural, photocatalytic, and anticancer properties. The materials were characterized via X-ray Diffraction method (XRD), micro-Raman, Fourier Transform Infrared Spectroscopy (FT-IR), Brunauer-Emmett-Teller (BET), Dynamic Light Scattering (DLS), and Field Emission Scanning Electron Microscope (FESEM) analysis. Photocatalysis was conducted under UV and visible light irradiation, using Rhodamine B as the organic pollutant. It was observed that the highest photocatalysis efficiency was obtained by the nanoparticles synthesized from the zinc acetate used as precursor material. A cell-dependent anticancer efficiency of the tested ZnO nanoparticles was also observed, that was also attributed to the different precursors and the synthesis method, revealing that the nanoparticles that were synthesized from zinc acetate were more bioactive among the four tested precursors. Overall, the data revealed that both the enhanced photocatalytic and biological activity of ZnO nanoparticles derived from zinc acetate precursor could be attributed to the reduced crystalline size, increased surface area, as well as the observed hexagonal crystalline morphology.
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Affiliation(s)
- Maria-Anna Gatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
| | - Nefeli Lagopati
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ioanna-Aglaia Vagena
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- School of Science and Technology, Hellenic Open University, 26335 Patra, Greece
| | - Evangelia A. Pavlatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
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16
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Gasmi A, Nasreen A, Menzel A, Gasmi Benahmed A, Pivina L, Noor S, Peana M, Chirumbolo S, Bjørklund G. Neurotransmitters Regulation and Food Intake: The Role of Dietary Sources in Neurotransmission. Molecules 2022; 28:molecules28010210. [PMID: 36615404 PMCID: PMC9822089 DOI: 10.3390/molecules28010210] [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] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022]
Abstract
Neurotransmitters (NTs) are biologically active chemicals, which mediate the electrochemical transmission between neurons. NTs control numerous organic functions particularly crucial for life, including movement, emotional responses, and the physical ability to feel pleasure and pain. These molecules are synthesized from simple, very common precursors. Many types of NTs have both excitatory and inhibitory effects. Neurotransmitters' imbalance can cause many diseases and disorders, such as Parkinson's disease, depression, insomnia, increased anxiety, memory loss, etc. Natural food sources containing NTs and/or their precursors would be a potential option to help maintain the balance of NTs to prevent brain and psychiatric disorders. The level of NTs could be influenced, therefore, by targeting dietary habits and nutritional regimens. The progressive implementation of nutritional approaches in clinical practice has made it necessary to infer more about some of the nutritional NTs in neuropsychiatry. However, the importance of the intake of nutritional NTs requires further understanding, since there are no prior significant studies about their bioavailability, clinical significance, and effects on nerve cells. Interventional strategies supported by evidence should be encouraged.
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Affiliation(s)
- Amin Gasmi
- Société Francophone de Nutrithérapie et de Nutrigénétique Appliquée, 69100 Villeurbanne, France
| | - Aniqa Nasreen
- Department of Physiology, King Edward Medical University, Lahore 54000, Pakistan
| | - Alain Menzel
- Laboratoires Réunis, 38, Rue Hiehl, L-6131 Junglinster, Luxembourg
| | - Asma Gasmi Benahmed
- Académie Internationale de Médecine Dentaire Intégrative, 75000 Paris, France
| | - Lyudmila Pivina
- Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, 071400 Semey, Kazakhstan
- CONEM Kazakhstan Environmental Health and Safety Research Group, Semey Medical University, 071400 Semey, Kazakhstan
| | - Sàdaf Noor
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Massimiliano Peana
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, 37134 Verona, Italy
- CONEM Scientific Secretary, Strada Le Grazie 9, 37134 Verona, Italy
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Toften 24, 8610 Mo i Rana, Norway
- Correspondence:
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17
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Gao GR, Hou ZJ, Ding MZ, Bai S, Wei SY, Qiao B, Xu QM, Cheng JS, Yuan YJ. Improved Production of Fengycin in Bacillus subtilis by Integrated Strain Engineering Strategy. ACS Synth Biol 2022; 11:4065-4076. [PMID: 36379006 DOI: 10.1021/acssynbio.2c00380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fengycin is a lipopeptide with broad-spectrum antifungal activity. However, its low yield limits its commercial application. Therefore, we iteratively edited multiple target genes associated with fengycin synthesis by combinatorial metabolic engineering. The ability of Bacillus subtilis 168 to manufacture lipopeptides was restored, and the fengycin titer was 1.81 mg/L. Fengycin production was further increased to 174.63 mg/L after knocking out pathways associated with surfactin and bacillaene synthesis and replacing the native promoter (PppsA) with the Pveg promoter. Subsequently, fengycin levels were elevated to 258.52 mg/L by upregulating the expression of relevant genes involved in the fatty acid pathway. After blocking spore and biofilm formation, fengycin production reached 302.51 mg/L. Finally, fengycin production was increased to approximately 885.37 mg/L after adding threonine in the optimized culture medium, which was 488-fold higher compared with that of the initial strain. Integrated strain engineering provides a strategy to construct a system for improving fengycin production.
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Affiliation(s)
- Geng-Rong Gao
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Zheng-Jie Hou
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Ming-Zhu Ding
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Song Bai
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Si-Yu Wei
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Bin Qiao
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Qiu-Man Xu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Binshuixi Road 393, Xiqing District, Tianjin 300387, PR China
| | - Jing-Sheng Cheng
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
| | - Ying-Jin Yuan
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China.,Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Jinnan District, Tianjin 300350, PR China
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18
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Boysen N, Wree JL, Zanders D, Rogalla D, Öhl D, Schuhmann W, Devi A. High-Performance Iridium Thin Films for Water Splitting by CVD Using New Ir(I) Precursors. ACS Appl Mater Interfaces 2022; 14:52149-52162. [PMID: 36351209 DOI: 10.1021/acsami.2c13865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Thin films of iridium can be utilized in a wide range of applications and are particularly interesting for catalytic transformations. For the scalable deposition of functional Ir thin films, metalorganic chemical vapor deposition (MOCVD) is the method of choice, for which organometallic precursors that embody a high volatility and thermal stability need to be specifically tailored. Herein, we report the synthesis, analysis, and evaluation of new volatile Ir(I)-1,5-cyclooctadiene complexes bearing all-nitrogen coordinating guanidinate (N,N'-diisopropyl-2-dimethylamido-guanidinate (DPDMG)), amidinate (N,N'-diisopropyl-amidinate (DPAMD)), and formamidinate (N,N'-diisopropyl-formamidinate (DPfAMD)) ligands. The amidinate-based Ir complex [Ir(COD)(DPAMD)] together with O2 was implemented in MOCVD experiments resulting in highly crystalline, dense, and conductive Ir films on a variety of substrate materials. The Ir deposits achieved outstanding electrochemical performance with overpotentials in the range of 50 mV at -10 mA·cm-2 for catalytic hydrogen evolution reaction (HER) in acidic solution. The ability to deposit Ir layers via MOCVD exhibiting promising functional properties is a significant step toward large-scale applications.
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Affiliation(s)
- Nils Boysen
- Inorganic Materials Chemistry (IMC), Ruhr University Bochum, 44801 Bochum, Germany
| | - Jan-Lucas Wree
- Inorganic Materials Chemistry (IMC), Ruhr University Bochum, 44801 Bochum, Germany
| | - David Zanders
- Inorganic Materials Chemistry (IMC), Ruhr University Bochum, 44801 Bochum, Germany
| | | | - Denis Öhl
- Analytical Chemistry─Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry─Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | - Anjana Devi
- Inorganic Materials Chemistry (IMC), Ruhr University Bochum, 44801 Bochum, Germany
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19
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Abstract
To unravel the complexity of per- and polyfluoroalkyl substances (PFAS) in products and environmental samples, sum parameters that provide relevant information on chemical characteristics are necessary since not all PFAS can be captured by target analysis in case of missing reference standards or if they are not extractable or amenable to the analytical method. Therefore, we evaluated photocatalysis (UV/TiO2) as a further total oxidizable precursor approach (PhotoTOP) to characterize perfluoroalkyl acid precursors via their conversion to perfluoroalkyl carboxylic acids (PFCAs). Photocatalysis has the advantage that no salts are needed, allowing direct injection with liquid chromatography-mass spectrometry without time-consuming and potentially discriminating sample cleanup. OH radicals were monitored with OH probes to determine the reactivity. For eight different precursors (diPAPs, FTSAs, FTCAs, N-EtFOSAA, PFOSA), mass balance was achieved within 4 h of oxidation, and also, in the presence of matrix, complete conversion was possible. The PhotoTOP was able to predict the precursor chain length of known and here newly identified precursors qualitatively when applied to two PFAS-coated paper samples and technical PFAS mixtures. The length of the perfluorinated carbon chain (n) was mostly conserved in the form of PFCAs (n-1) with only minor fractions of shorter-chain PFCAs. Finally, an unknown fabric sample and a polymer mixture (no PFAS detectable in extracts) were oxidized, and the generated PFCAs indicated the occurrence of side-chain fluorinated polymers.
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Affiliation(s)
- Jonathan Zweigle
- Environmental Analytical Chemistry, Center for Applied Geoscience, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany
| | - Boris Bugsel
- Environmental Analytical Chemistry, Center for Applied Geoscience, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany
| | - Catharina Capitain
- Environmental Analytical Chemistry, Center for Applied Geoscience, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany
| | - Christian Zwiener
- Environmental Analytical Chemistry, Center for Applied Geoscience, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany
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20
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Hu Y, Xiao N, Ye Y, Shi W. Fish proteins as potential precursors of taste-active compounds: an in silico study. J Sci Food Agric 2022; 102:6404-6413. [PMID: 35562847 DOI: 10.1002/jsfa.12006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/08/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Fish protein is a good source of amino acids and peptides with sensory properties. Theoretically, the type of protein affects the taste quality of the protein hydrolysates. To better use fish protein in the food ingredients industry, an in silico approach was adopted to evaluate the potential of fish protein to release taste-active compounds. RESULTS Six types of protein from seven commercial fishes were screened from the Uniprot knowledge base. The results showed that a remarkable number of umami fragments presented in myosin and parvalbumin (PB), such as glutamic acid (Glu), aspartic acid (Asp), and Asp- and Glu- containing peptides, whereas sweet amino acids and bitter peptides (e.g., Pro- and Gly- containing peptides) were mainly found in collagen (CGI) in all fish samples. After the in silico proteolysis by papain, a difference in the profile of taste-active fragments was observed among the six types of proteins. Amino acids were the main hydrolysis products of these proteins, especially umami, sweet, and bitter amino acids, significantly contributing to the taste formation of protein hydrolysates. Besides, the myosin and CGI hydrolysates were abundant in taste active peptides both in types and quantities. CONCLUSION Myosin is a promising protein source for producing umami fragments, and CGI seems to be a good precursor of sweet and bitter fragments. Different types of protein have an essential effect on the taste of protein hydrolysates. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yun Hu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Naiyong Xiao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Yiting Ye
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Wenzheng Shi
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai, China
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21
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Tenorio R, Maizel AC, Schaefer CE, Higgins CP, Strathmann TJ. Application of High-Resolution Mass Spectrometry to Evaluate UV-Sulfite-Induced Transformations of Per- and Polyfluoroalkyl Substances (PFASs) in Aqueous Film-Forming Foam (AFFF). Environ Sci Technol 2022; 56:14774-14787. [PMID: 36162863 DOI: 10.1021/acs.est.2c03228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
UV-sulfite has been shown to effectively degrade per- and polyfluoroalkyl substances (PFASs) in single-solute experiments. We recently reported treatment of 15 PFASs, including perfluoroalkyl sulfonic acids (PFSAs), perfluoroalkyl carboxylic acids (PFCAs), and fluorotelomer sulfonic acids (FTSs), detected in aqueous film-forming foam (AFFF) using high-resolution liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) targeted analysis. Here, we extend the analysis within those original reaction solutions to include the wider set of PFASs in AFFF for which reactivity is largely unknown by applying recently established LC-QTOF-MS suspect screening and semiquantitative analysis protocols. Sixty-eight additional PFASs were detected (15 targeted + 68 suspect screening = 83 PFASs) with semiquantitative analysis, and their behavior was binned on the basis of (1) detection in untreated AFFF, (2) PFAS photogeneration, and (3) reactivity. These 68 structures account for an additional 20% of the total fluorine content in the AFFF (targeted + suspect screening = 57% of total fluorine content). Structure-reactivity trends were also revealed. During treatment, transformations of highly reactive structures containing sulfonamide (-SO2N-) and reduced sulfur groups (e.g., -S- and -SO-) adjacent to the perfluoroalkyl [F(CF2)n-] or fluorotelomer [F(CF2)n(CH2)2-] chain are likely sources of PFCA, PFSA, and FTS generation previously reported during the early stages of reactions. The results also show the character of headgroup moieties adjacent to the F(CF2)n-/F(CF2)n(CH2)2- chain (e.g., sulfur oxidation state, sulfonamide type, and carboxylic acids) and substitution along the F(CF2)n- chain (e.g., H-, ketone, and ether) together may determine chain length-dependent reactivity trends. The results highlight the importance of monitoring PFASs outside conventional targeted analytical methodologies.
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Affiliation(s)
- Raul Tenorio
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 205 North Mathews Avenue, Urbana, Illinois 61801, United States
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Andrew C Maizel
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
- Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington, D.C. 20057, United States
| | - Charles E Schaefer
- CDM Smith, 110 Fieldcrest Avenue, Edison, New Jersey 08837, United States
| | - Christopher P Higgins
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Timothy J Strathmann
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
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22
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Abstract
The view put forward here is that visual bodily signals play a core role in human communication and the coordination of minds. Critically, this role goes far beyond referential and propositional meaning. The human communication system that we consider to be the explanandum in the evolution of language thus is not spoken language. It is, instead, a deeply multimodal, multilayered, multifunctional system that developed-and survived-owing to the extraordinary flexibility and adaptability that it endows us with. Beyond their undisputed iconic power, visual bodily signals (manual and head gestures, facial expressions, gaze, torso movements) fundamentally contribute to key pragmatic processes in modern human communication. This contribution becomes particularly evident with a focus that includes non-iconic manual signals, non-manual signals and signal combinations. Such a focus also needs to consider meaning encoded not just via iconic mappings, since kinematic modulations and interaction-bound meaning are additional properties equipping the body with striking pragmatic capacities. Some of these capacities, or its precursors, may have already been present in the last common ancestor we share with the great apes and may qualify as early versions of the components constituting the hypothesized interaction engine. This article is part of the theme issue 'Revisiting the human 'interaction engine': comparative approaches to social action coordination'.
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Affiliation(s)
- Judith Holler
- Max-Planck-Institut für Psycholinguistik, Nijmegen, The Netherlands
- Donders Centre for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
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23
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Tobarra‐Sanchez E, Riglin L, Agha SS, Stergiakouli E, Thapar A, Langley K. Preschool development, temperament and genetic liability as early markers of childhood ADHD: A cohort study. JCPP Adv 2022; 2:e12099. [PMID: 36478889 PMCID: PMC9716640 DOI: 10.1002/jcv2.12099] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 08/01/2022] [Indexed: 11/08/2022] Open
Abstract
Background ADHD is associated with multiple adverse outcomes and early identification is important. The present study sets out to identify early markers and developmental characteristics during the first 30 months of life that are associated with ADHD 6 years later. Methods 9201 participants from the prospective Avon Longitudinal Study of Parents and Children (ALSPAC) birth cohort were included. Outcome measures were parent-rated ADHD symptom scores (Strengths and Difficulties Questionnaire, SDQ) and ADHD diagnosis (Development and Wellbeing Assessment, DAWBA) at age 7. Seventeen putative markers were identified from previous literature and included: pre- and peri-natal risk factors, genetic liability (ADHD polygenic risk scores, PRS), early development, temperament scores and regulatory problems. Associations were examined using regression analysis. Results Univariable regression analysis showed that multiple early life factors were associated with future ADHD outcomes, even after controlling for sex and socio-economic status. In a multivariable linear regression model; temperament activity scores (B = 0.107, CI = 0.083-0.132), vocabulary delay (B = 0.605, CI = 0.211-0.988), fine motor delay (B = 0.693, CI = 0.360-1.025) and ADHD PRS (B = 0.184, CI = 0.074-0.294) were associated with future symptoms (R 2 = 10.7%). In a multivariable logistic regression model, ADHD PRS (OR = 1.39, CI = 1.10-1.77) and temperament activity scores (OR = 1.09, CI = 1.04-1.16) showed association with ADHD diagnosis. Conclusion As well as male sex and lower socio-economic status, high temperament activity levels and motor and speech delays in the first 30 months of life, are associated with childhood ADHD. Intriguingly, given that genetic risk scores are known to explain little of the variance of ADHD outcomes, we found that ADHD PRS added useful predictive information. Future research needs to test whether predictive models incorporating aspects of early development and genetic risk scores are useful for predicting ADHD in clinical practice.
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Affiliation(s)
- Esther Tobarra‐Sanchez
- Child and Adolescent Psychiatry SectionDivision of Psychological Medicine and Clinical Neurosciences and MRC Centre for Neuropsychiatric Genetics and GenomicsSchool of MedicineCardiff UniversityCardiffUK,Cwm Taf Morgannwg University Health BoardCardiffUK
| | - Lucy Riglin
- Child and Adolescent Psychiatry SectionDivision of Psychological Medicine and Clinical Neurosciences and MRC Centre for Neuropsychiatric Genetics and GenomicsSchool of MedicineCardiff UniversityCardiffUK
| | - Sharifah S. Agha
- Child and Adolescent Psychiatry SectionDivision of Psychological Medicine and Clinical Neurosciences and MRC Centre for Neuropsychiatric Genetics and GenomicsSchool of MedicineCardiff UniversityCardiffUK,Cwm Taf Morgannwg University Health BoardCardiffUK
| | - Evie Stergiakouli
- MRC Integrative Epidemiology UnitUniversity of BristolBristolUK,Population Health SciencesBristol Medical SchoolUniversity of BristolBristolUK
| | - Anita Thapar
- Child and Adolescent Psychiatry SectionDivision of Psychological Medicine and Clinical Neurosciences and MRC Centre for Neuropsychiatric Genetics and GenomicsSchool of MedicineCardiff UniversityCardiffUK
| | - Kate Langley
- Child and Adolescent Psychiatry SectionDivision of Psychological Medicine and Clinical Neurosciences and MRC Centre for Neuropsychiatric Genetics and GenomicsSchool of MedicineCardiff UniversityCardiffUK,School of PsychologyCardiff UniversityCardiffUK
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24
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He Y, Lin Z, Wang J, Zhang K, Xu X, Li Y, Huang X, Ma T, Xiao S, Yang S. A Heat-Liquefiable Solid Precursor for Ambient Growth of Perovskites with High Tunability, Performance and Stability. Small Methods 2022; 6:e2200384. [PMID: 35676226 DOI: 10.1002/smtd.202200384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Halide perovskites are intensively studied for applications in optoelectronic devices because of their outstanding properties and relatively low cost. However, the common precursor solutions for perovskite fabrication are rather unstable in the presence of moisture and oxygen, limiting the large-scale low-cost production of perovskite. Herein, water is used counterintuitively to formulate an ambient stable perovskite precursor, which is peculiar in that it is solid at room temperature but becomes a liquid at 75 °C. The non-fluidity of the precursor stemmed from the water-assisted intermediate fiber assembly, conferring high damp air stability. Yet the heat-liquefiability made the precursor highly processible for perovskite growth, and when guided by polyvinyl pyrrolidone coordination with Pb2+ , the perovskite can preferentially grow along the [200] direction, significantly improving the film quality. To demonstrate the utility of the precursor, it has been used to fabricate self-driven halide perovskite photodetectors, which exhibited a low noise current of 2.0 × 10-14 A Hz-1/2 , a high specific detectivity up to 1.4 × 1013 Jones, and high stability of 20 days of operation with only < 5% external quantum efficiency decay. This type of solid-liquid convertible precursor opens up new opportunities for wider applications of perovskites.
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Affiliation(s)
- Yi He
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, 808-0135, Japan
| | - Zedong Lin
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, 518107, P. R. China
| | - Jian Wang
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, 518107, P. R. China
| | - Kai Zhang
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Xiuwen Xu
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Yu Li
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Xianzhen Huang
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Tingli Ma
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, 808-0135, Japan
| | - Shuang Xiao
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Shihe Yang
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, 518107, P. R. China
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25
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Jiao C, Wei M, Fan H, Song C, Wang Z, Cai Y, Jin Q. Transcriptomic analysis of genes related to alkaloid biosynthesis and the regulation mechanism under precursor and methyl jasmonate treatment in Dendrobium officinale. Front Plant Sci 2022; 13:941231. [PMID: 35937364 PMCID: PMC9355482 DOI: 10.3389/fpls.2022.941231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Dendrobium officinale is both a traditional herbal medicine and a plant of high ornamental and medicinal value. Alkaloids, especially terpenoid indole alkaloids (TIAs), with pharmacological activities are present in the tissues of D. officinale. A number of genes involved in alkaloid biosynthetic pathways have been identified. However, the regulatory mechanisms underlying the precursor and methyl jasmonate (MeJA)-induced accumulation of alkaloids in D. officinale are poorly understood. In this study, we collected D. officinale protocorm-like bodies (PLBs) and treated them with TIA precursors (tryptophan and secologanin) and MeJA for 0 (T0), 4 (T4) and 24 h (T24); we also established control samples (C4 and C24). Then, we measured the total alkaloid content of the PLBs and performed transcriptome sequencing using the Illumina HiSeq 2,500 system. The total alkaloid content increased significantly after 4 h of treatment. Go and KEGG analysis suggested that genes from the TIA, isoquinoline alkaloid, tropane alkaloid and jasmonate (JA) biosynthetic pathways were significantly enriched. Weighted gene coexpression network analysis (WGCNA) uncovered brown module related to alkaloid content. Six and seven genes related to alkaloid and JA bisosynthetic pathways, respectively, might encode the key enzymes involved in alkaloid biosynthesis of D. officinale. Moreover, 13 transcription factors (TFs), which mostly belong to AP2/ERF, WRKY, and MYB gene families, were predicted to regulate alkaloid biosynthesis. Our data provide insight for studying the regulatory mechanism underlying TIA precursor and MeJA-induced accumulation of three types of alkaloids in D. officinale.
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Affiliation(s)
- Chunyan Jiao
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- College of Life Sciences, Hefei Normal University, Hefei, China
| | - Mengke Wei
- College of Life Sciences, Hefei Normal University, Hefei, China
| | - Honghong Fan
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Cheng Song
- College of Biological and Pharmaceutical Engineering, West Anhui University, Luan, China
| | - Zhanjun Wang
- College of Life Sciences, Hefei Normal University, Hefei, China
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Qing Jin
- School of Life Sciences, Anhui Agricultural University, Hefei, China
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26
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Zhang T, Li C, Wang F, Noori A, Mousavi MF, Xia X, Zhang Y. Recent Advances in Carbon Anodes for Sodium-Ion Batteries. CHEM REC 2022; 22:e202200083. [PMID: 35670500 DOI: 10.1002/tcr.202200083] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 01/05/2023]
Abstract
Sodium-ion batteries (SIBs) have gained tremendous attention for large-scale energy storage applications due to the natural abundance, low cost, and even geographic distribution of sodium resources as well as a similar working mechanism to lithium-ion batteries (LIBs). One of the critical bottlenecks, however, is the design of high-performance and low-cost anode materials. Graphite anode that has dominated the market share of LIBs does not properly intercalate sodium ions. However, other carbonaceous materials are still considered as one of the most promising anode materials for SIBs in virtue of their high electronic conductivity, abundant active sites, hierarchical porosity, and excellent mechanical stability. In this review, we have tried to summarize the latest progresses made on the development of carbon-based negative electrodes (including hard carbons, soft carbons, and synthetic carbon allotropes) for SIBs. We also have provided a comprehensive understanding of their physical properties, the sodium ions storage mechanisms, and the improvement measures to cope with the current challenges. In addition, we have proposed future research directions for SIBs that will provide important insights into further development of carbon-based materials for SIBs.
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Affiliation(s)
- Tengfei Zhang
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313002, China.,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Chen Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Fan Wang
- Key Laboratory of Engineering Dielectric and Applications (Ministry of Education), School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
| | - Abolhassan Noori
- Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, 14117-13116, Iran
| | - Mir F Mousavi
- Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, 14117-13116, Iran
| | - Xinhui Xia
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313002, China.,State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yongqi Zhang
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313002, China.,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
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27
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Jiang Y, Jiang Q, Fan D, Wang M, Zhao Y. Effect of Acrolein, a Lipid Oxidation Product, on the Formation of the Heterocyclic Aromatic Amine 2-Amino-3,8-dimethylimidazo[4,5- f]quinoxaline (MeIQx) in Model Systems and Roast Salmon Patties. J Agric Food Chem 2022; 70:5887-5895. [PMID: 35504016 DOI: 10.1021/acs.jafc.2c00970] [Citation(s) in RCA: 2] [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] [Indexed: 06/14/2023]
Abstract
The effect of acrolein, a lipid oxidation product, on the formation of the heterocyclic aromatic amine 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) was investigated in a chemical model containing glycine, creatinine, and glucose. Acrolein addition at 0.02-0.2 mmol increased MeIQx formation, while high levels of acrolein (>0.2 mmol) did not further increase MeIQx formation. Moreover, acrolein addition decreased the residue of glycine and creatinine but increased the residue of glucose; it also increased the formation of volatile intermediates in the MeIQx-producing chemical model. Further analysis indicated that acrolein can react with glycine, creatinine, and MeIQx to eliminate them. These results revealed that acrolein was able to contribute to MeIQx formation as a consequence of the comprehensive ability of acrolein to facilitate Strecker degradation of glycine, increase the formation of volatile intermediates, and react with glycine, creatinine, and MeIQx. In addition, the oxidation of minced salmon increased the content of MeIQx in the roasted salmon patties, further supporting the potential contribution role of lipid oxidation products in the formation of MeIQx.
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Affiliation(s)
- Ya Jiang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China
| | - Qingqing Jiang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China
| | - Daming Fan
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Mingfu Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Yueliang Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China
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28
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Rodgers K, Swartz CH, Occhialini J, Bassignani P, McCurdy M, Schaider LA. How Well Do Product Labels Indicate the Presence of PFAS in Consumer Items Used by Children and Adolescents? Environ Sci Technol 2022; 56:6294-6304. [PMID: 35506608 PMCID: PMC9118540 DOI: 10.1021/acs.est.1c05175] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [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] [Indexed: 05/06/2023]
Abstract
PFAS are persistent and toxic chemicals used in many commercial and industrial applications that are often added to consumer products, including those used by children and adolescents, to impart water and stain resistance. Since product labels rarely list chemical additives, including PFAS, we evaluated whether other information on product labels can be used by consumers to select products without PFAS. We selected 93 items marketed to or often used by children and adolescents across three product types (furnishings, apparel, bedding) and five labeling groups representing different combinations of water and/or stain resistance and "green" (including "nontoxic") assurances. We screened all products for total fluorine (F) and analyzed solvent extracts from a subset (n = 61) for 36 targeted PFAS and from a smaller subset (n = 30) for perfluoroalkyl acids (PFAAs) generated by precursor oxidation using the total oxidizable precursor (TOP) assay. Products advertised as water- and/or stain-resistant had more frequent detections and higher concentrations of total F than those without such claims, and targeted PFAS were detected only in products labeled as water- and/or stain-resistant. Concentrations of PFAAs generated by precursor oxidation using the TOP assay often exceeded pre-oxidation concentrations, suggesting that PFAA precursors contribute to solvent-extractable PFAS from products. Among products advertised as water- and/or stain-resistant, detection frequencies and concentrations of targeted PFAS were similar regardless of green assurances. This study illustrates many nonessential uses of PFAS in products used by children and adolescents and suggests that while water- and stain-resistant assurances can identify products likely to contain PFAS, current green assurances do not consistently indicate the absence of PFAS.
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Affiliation(s)
- Kathryn
M. Rodgers
- Silent
Spring Institute, 320 Nevada Street, Suite 302, Newton, Massachusetts 02460, United States
| | - Christopher H. Swartz
- Silent
Spring Institute, 320 Nevada Street, Suite 302, Newton, Massachusetts 02460, United States
| | - James Occhialini
- Alpha
Analytical Laboratories, 320 Forbes Blvd, Mansfield, Massachusetts 02048, United States
| | - Philip Bassignani
- Alpha
Analytical Laboratories, 320 Forbes Blvd, Mansfield, Massachusetts 02048, United States
| | - Michelle McCurdy
- Galbraith
Laboratories, Inc., 2323 Sycamore Drive, Knoxville, Tennessee 37921, United States
| | - Laurel A. Schaider
- Silent
Spring Institute, 320 Nevada Street, Suite 302, Newton, Massachusetts 02460, United States
- . Phone: 617-332-4288 ext 224
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29
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Loginova M, Sobachkin A, Sitnikov A, Yakovlev V, Myasnikov A, Sharafutdinov M, Tolochko B, Golovina T. In situ phase formation during high-temperature synthesis in clad mechanocomposites based on the Ti-Al system. J Synchrotron Radiat 2022; 29:698-710. [PMID: 35511003 PMCID: PMC9070719 DOI: 10.1107/s1600577522002004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Abstract
An in situ synchrotron experimental study of phase formation dynamics in clad mechanocomposites of Ti-Al systems during high-temperature synthesis was performed. Cladding of the obtained mechanocomposites was carried out with an SiO2 target, with a deposition time of 40 min. The high-temperature synthesis was performed using the thermal explosion method based on a microwave induction heater in the in situ mode on an experimental setup adapted to synchrotron radiation time-resolved diffractometry. The influence of the cladding on the macrokinetic parameters of synthesis in situ was investigated experimentally. It was found that for an ignition temperature Tig = 650 ± 10°C, the maximum synthesis temperatures were in the range Tmax = 1380-1465°C. The characteristic heating speed was 525 K min-1. The sequence and temperature-time interval of phase formation are determined. The formation of the TiAl, TiAl3 and Ti3Al compounds begins at T = 661°C. At Tmax = 1465.6°C, the synthesis product is multiphase, the structures of the formed TiAl3 (content about 70%) and TiAl (content about 25%) have a nonequilibrium state. At the stage of system annealing with T = 1384.9°C, the reaction of the components occurs with the formation of almost monophase TiAl (content of more than 90%); Ti occupies the rest.
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Affiliation(s)
- Marina Loginova
- Polzunov Altai State Technical University, Lenina Avenue, Barnaul, Altai Region 656038, Russian Federation
| | - Alexey Sobachkin
- Polzunov Altai State Technical University, Lenina Avenue, Barnaul, Altai Region 656038, Russian Federation
| | - Alexander Sitnikov
- Polzunov Altai State Technical University, Lenina Avenue, Barnaul, Altai Region 656038, Russian Federation
| | - Vladimir Yakovlev
- Polzunov Altai State Technical University, Lenina Avenue, Barnaul, Altai Region 656038, Russian Federation
| | - Andrey Myasnikov
- Polzunov Altai State Technical University, Lenina Avenue, Barnaul, Altai Region 656038, Russian Federation
- Institute of Solid State Chemistry and Mechanochemistry of Siberian Branch Russian Academy of Sciences, Kutateladze, Novosibirsk 630128, Russian Federation
| | - Marat Sharafutdinov
- Institute of Solid State Chemistry and Mechanochemistry of Siberian Branch Russian Academy of Sciences, Kutateladze, Novosibirsk 630128, Russian Federation
| | - Boris Tolochko
- Institute of Solid State Chemistry and Mechanochemistry of Siberian Branch Russian Academy of Sciences, Kutateladze, Novosibirsk 630128, Russian Federation
| | - Tatiana Golovina
- Polzunov Altai State Technical University, Lenina Avenue, Barnaul, Altai Region 656038, Russian Federation
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30
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Huang B, Cheng L, Li X, Zhao Z, Yang J, Li Y, Pang Y, Cao G. Layered Cathode Materials: Precursors, Synthesis, Microstructure, Electrochemical Properties, and Battery Performance. Small 2022; 18:e2107697. [PMID: 35218307 DOI: 10.1002/smll.202107697] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/05/2022] [Indexed: 06/14/2023]
Abstract
The exploitation of clean energy promotes the exploration of next-generation lithium-ion batteries (LIBs) with high energy-density, long life, high safety, and low cost. Ni-rich layered cathode materials are one of the most promising candidates for next-generation LIBs. Numerous studies focusing on the synthesis and modifications of the layered cathode materials are published every year. Many physical features of precursors, such as density, morphology, size distribution, and microstructure of primary particles pass to the resulting cathode materials, thus significantly affecting their electrochemical properties and battery performance. This review focuses on the recent advances in the controlled synthesis of hydroxide precursors and the growth of particles. The essential parameters in controlled coprecipitation are discussed in detail. Some innovative technologies for precursor modifications and for the synthesis of novel precursors are highlighted. In addition, future perspectives of the development of hydroxide precursors are presented.
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Affiliation(s)
- Bin Huang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
| | - Lei Cheng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xinze Li
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
| | - Zaowen Zhao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jianwen Yang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
| | - Yanwei Li
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
| | - Youyong Pang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
| | - Guozhong Cao
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA
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31
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Ren X, Li M, Wang W, Niu X, Xu Q, Zhang R. Inhibitory Effect of Tamarix ramosissima Extract on the Formation of Heterocyclic Amines in Roast Lamb Patties by Retarding the Consumption of Precursors and Preventing Free Radicals. Foods 2022; 11. [PMID: 35407089 DOI: 10.3390/foods11071000] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 11/23/2022] Open
Abstract
Tamarix ramosissima has been widely used as barbecue skewers for the good taste and unique flavor it gives to the meat, but the effects of T. ramosissima on heterocyclic amine (HA) formation in roast lamb are unknown. The influence of T. ramosissima extract (TRE) on HA formation, precursors’ consumption, and free radicals’ generation in roast lamb patties were elucidated by UPLC-MS, HPLC, and electron spin resonance (ESR) analysis, respectively. Six HAs were identified and compared with the control group; the total and polar HAs decreased by 30.51% and 56.92% with TRE addition at 0.30 g/kg. The highest inhibitory effect was found against 2-amino-1-methyl-6-phenylimidazo[4,5-f]pyridine (PhIP) formation (70.83%) at 0.45 g/kg. The addition of TRE retarded the consumption of HA precursors, resulting in fewer HAs formed. The typical signal intensity of free radicals in roast lamb patties significantly decreased with TRE addition versus the control group (p < 0.05), and the higher the levels of the TRE, the greater the decrease in signal intensity. We propose that the inhibitory effects of TRE on HA formation, especially on polar HAs, were probably achieved by retarding the consumption of precursors and preventing free radicals from being generated in roast lamb patties. These findings provide valuable information concerning TRE’s effectiveness in preventing HA formation through both the precursor consumption and free radical scavenging mechanisms.
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32
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Fu CB, Xu WS, Dan L, Tong JH. [Temporal and Spatial Variations in Ozone and Its Causes over Hainan Province from 2015 to 2020]. Huan Jing Ke Xue 2022; 43:675-685. [PMID: 35075841 DOI: 10.13227/j.hjkx.202105103] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study investigated temporal and spatial variations in O3-8h (defined as the maximum 8 h average result) in Hainan Province from 2015 to 2020 and further analyzed its relationships with precursors and meteorological factors based on a dataset of observations from 32 environmental monitoring stations in Hainan. Basic statistical methods, including the empirical orthogonal function (EOF), climatic tendency rate, and climatic trend coefficient analysis, were used here. The results showed that ρ(O3-8h) was higher in northern and western Hainan than that in other regions, with the maximum value occurring in Dongfang City (91.5 μg·m-3). Twelve cities and counties experienced a downward trend from 2015 to 2020, and six cities and counties reached a 95% confidence level. The variation in ρ(O3-8h) in Hainan Province demonstrated remarkable seasonal changes, which were the largest in the autumn, spring, and winter followed by the smallest in the summer, exhibiting a clear declining trend in all seasons except autumn. In addition, the cumulative variance of the first two eigenvector fields decomposed by EOF was 72.58%, which could well describe the distributed characteristics of ρ(O3-8h) in Hainan Province. The first mode reflected the consistency of ρ(O3-8h) variation, and the second mode reflected regional differences. Meanwhile, the change in ρ(O3-8h) had a good correlation with the precursors and meteorological factors. Among them, the correlation coefficients between ρ(O3-8h) and ρ(NO2), precipitation, sunshine duration, average temperature, average wind speed, atmospheric pressure, and total radiation passed the 99% confidence test. The results of multiple linear regression showed that the variation in regressed ρ(O3-8h) was consistent with the observed ρ(O3-8h), and the correlation coefficient between them was 0.853, which passed the 99.9% confidence test. The regression value explained 0.72 variance of the observed value.
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Affiliation(s)
- Chuan-Bo Fu
- Hainan Institute of Meteorological Science, Haikou 570203, China
- Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
- Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China
| | - Wen-Shuai Xu
- Hainan Research Academy of Environmental Sciences, Haikou 571126, China
| | - Li Dan
- Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - Jin-He Tong
- Hainan Institute of Meteorological Science, Haikou 570203, China
- Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China
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Björnsdotter MK, Yeung LWY, Kärrman A, Jogsten IE. Mass Balance of Perfluoroalkyl Acids, Including Trifluoroacetic Acid, in a Freshwater Lake. Environ Sci Technol 2022; 56:251-259. [PMID: 34927432 PMCID: PMC8733927 DOI: 10.1021/acs.est.1c04472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/05/2021] [Revised: 11/28/2021] [Accepted: 12/05/2021] [Indexed: 06/02/2023]
Abstract
Perfluoroalkyl acids (PFAAs) are highly persistent chemicals that are ubiquitously found in the environment. The atmospheric degradation of precursor compounds has been identified as a source of PFAAs and might be an important pathway for contamination. Lake Vättern is one of Sweden's largest lakes and is an important source for drinking water. In addition to contamination via atmospheric deposition, the lake is subject to several potential contamination sources via surface water inflow. The relevance of different sources is not well understood. A mass balance of selected PFAAs was assembled based on measured concentrations in atmospheric deposition, surface water from streams that constitute the main inflow and outflow, and surface water in the lake. The largest input was seen for trifluoroacetic acid (150 kg/year), perfluoropropanoic acid (1.6 kg/year), perfluorobutanoic acid (4.0 kg/year), and perfluoro-octanoic acid (1.5 kg/year). Both atmospheric deposition and surface water inflow was found to be important input pathways. There was a positive correlation between the input of most perfluoroalkyl carboxylic acids via atmospheric deposition and global radiation and between the input via surface water inflow and catchment area. These findings highlight the importance of atmospheric oxidation of volatile precursor compounds for contamination in surface waters.
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Göckener B, Fliedner A, Rüdel H, Badry A, Koschorreck J. Long-Term Trends of Per- and Polyfluoroalkyl Substances (PFAS) in Suspended Particular Matter from German Rivers Using the Direct Total Oxidizable Precursor (dTOP) Assay. Environ Sci Technol 2022; 56:208-217. [PMID: 34910874 DOI: 10.1021/acs.est.1c04165] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [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: 06/14/2023]
Abstract
Suspended particulate matter (SPM) from 13 riverine sampling sites of the German Environmental Specimen Bank collected between 2005 and 2019 was retrospectively investigated for per- and polyfluoroalkyl substances (PFAS). The samples were analyzed both by target analysis for 41 PFAS and by a modified total oxidizable precursor (dTOP) assay to capture also unknown precursors. Temporal trends and spatial differences were investigated by generalized linear modeling (GLM). Time trend analysis across all rivers showed decreasing trends for ∑PFCA and ∑PFSA concentrations in SPM. Trends based on target analysis (∑PFCAtarget: -10.0%, ∑PFSAtarget: -8.2%) were more pronounced than in the dTOP analysis (∑PFCAdTOP: -4.2%; ∑PFSAdTOP: -5.3%), suggesting that conventional target analysis overestimated actual decreases as precursors are not considered. ∑PFAS concentrations determined by dTOP assay were 1.3-145 times higher as compared to target analysis, indicating substantial amounts of unknown precursors in the samples. The ∑PFASdTOP/∑PFAStarget ratio increased at all sites between 2005 and 2019. Contamination was highest in SPM from the Elbe tributary Mulde downstream of a large industrial park. The results underscore the need to go beyond conventional target analysis and include precursors when assessing PFAS contamination in the environment. The dTOP assay is a suitable tool for this purpose.
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Affiliation(s)
- Bernd Göckener
- Fraunhofer Institute for Molecular Biology and Applied Ecology (Fraunhofer IME), 57392 Schmallenberg, Germany
| | - Annette Fliedner
- Fraunhofer Institute for Molecular Biology and Applied Ecology (Fraunhofer IME), 57392 Schmallenberg, Germany
| | - Heinz Rüdel
- Fraunhofer Institute for Molecular Biology and Applied Ecology (Fraunhofer IME), 57392 Schmallenberg, Germany
| | - Alexander Badry
- German Environment Agency (Umweltbundesamt), 06813 Dessau-Rosslau, Germany
| | - Jan Koschorreck
- German Environment Agency (Umweltbundesamt), 06813 Dessau-Rosslau, Germany
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35
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Guo L, Ding S, Liu Y, Gao C, Hu G, Song W, Liu J, Chen X, Liu L. Enhancing tryptophan production by balancing precursors in Escherichia coli. Biotechnol Bioeng 2021; 119:983-993. [PMID: 34936092 DOI: 10.1002/bit.28019] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/20/2021] [Accepted: 11/27/2021] [Indexed: 11/11/2022]
Abstract
Tryptophan, an essential aromatic amino acid, is widely used in animal feed, food additives, and pharmaceuticals. Although sustainable and environmentally friendly, microbial tryptophan production from renewable feedstocks is limited by low biosynthesis and transport rates. Here, an Escherichia coli strain capable of efficient tryptophan production was generated by improving and balancing the supply of precursors and by engineering membrane transporters. Tryptophan biosynthesis was increased by eliminating negative regulatory factors, blocking competing pathways, and preventing tryptophan degradation. Promoter engineering balanced the supply of the precursors erythrose-4-phosphate and phosphoenolpyruvate, as well as the availability of serine. Finally, the engineering of tryptophan transporters prevented feedback inhibition and growth toxicity. Fed-batch fermentation of the final strain (TRP12) in a 5 L bioreactor produced 52.1 g·L-1 of tryptophan, with a yield of 0.171 g·g-1 glucose and productivity of 1.45 g·L-1 ·h-1 . The metabolic engineering strategy described here paves the way for high-performance microbial cell factories aimed at the production of tryptophan as well as other valuable chemicals.
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Affiliation(s)
- Liang Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Shuang Ding
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Yadi Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Cong Gao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Guipeng Hu
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Wei Song
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Jia Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Xiulai Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Liming Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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Liu H, Guo J, Aryee AA, Hua L, Sun Y, Li Z, Liu J, Tang W. Lighting up Individual Organelles With Fluorescent Carbon Dots. Front Chem 2021; 9:784851. [PMID: 34900943 PMCID: PMC8660688 DOI: 10.3389/fchem.2021.784851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 10/29/2021] [Indexed: 11/13/2022] Open
Abstract
Cell organelles play crucial roles in the normal functioning of an organism, therefore the disruption of their operation is associated with diseases and in some cases death. Thus, the detection and monitoring of the activities within these organelles are of great importance. Several probes based on graphene oxide, small molecules, and other nanomaterials have been developed for targeting specific organelles. Among these materials, organelle-targeted fluorescent probes based on carbon dots have attracted substantial attention in recent years owing to their superior characteristics, which include facile synthesis, good photostability, low cytotoxicity, and high selectivity. The ability of these probes to target specific organelles enables researchers to obtain valuable information for understanding the processes involved in their functions and/or malfunctions and may also aid in effective targeted drug delivery. This review highlights recently reported organelle-specific fluorescent probes based on carbon dots. The precursors of these carbon dots are also discussed because studies have shown that many of the intrinsic properties of these probes originate from the precursor used. An overview of the functions of the discussed organelles, the types of probes used, and their advantages and limitations are also provided. Organelles such as the mitochondria, nucleus, lysosomes, and endoplasmic reticulum have been the central focus of research to date, whereas the Golgi body, centrosome, vesicles, and others have received comparatively little attention. It is therefore the hope of the authors that further studies will be conducted in an effort to design probes with the ability to localize within these less studied organelles so as to fully elucidate the mechanisms underlying their function.
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Affiliation(s)
- Haifang Liu
- Precision Medicine Center of the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiancheng Guo
- Precision Medicine Center of the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | | | - Linlin Hua
- Precision Medicine Center of the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuanqiang Sun
- College of Chemistry of Zhengzhou University, Zhengzhou, China
| | - Zhaohui Li
- College of Chemistry of Zhengzhou University, Zhengzhou, China
| | - Jianbo Liu
- Precision Medicine Center of the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenxue Tang
- Precision Medicine Center of the Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Björnsdotter MK, Hartz WF, Kallenborn R, Ericson Jogsten I, Humby JD, Kärrman A, Yeung LWY. Levels and Seasonal Trends of C 1-C 4 Perfluoroalkyl Acids and the Discovery of Trifluoromethane Sulfonic Acid in Surface Snow in the Arctic. Environ Sci Technol 2021; 55:15853-15861. [PMID: 34779623 PMCID: PMC8655978 DOI: 10.1021/acs.est.1c04776] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 07/16/2021] [Revised: 10/23/2021] [Accepted: 11/07/2021] [Indexed: 05/31/2023]
Abstract
C1-C4 perfluoroalkyl acids (PFAAs) are highly persistent chemicals that have been found in the environment. To date, much uncertainty still exists about their sources and fate. The importance of the atmospheric degradation of volatile precursors to C1-C4 PFAAs were investigated by studying their distribution and seasonal variation in remote Arctic locations. C1-C4 PFAAs were measured in surface snow on the island of Spitsbergen in the Norwegian Arctic during January-August 2019. Trifluoroacetic acid (TFA), perfluoropropanoic acid (PFPrA), perfluorobutanoic acid (PFBA), and trifluoromethane sulfonic acid (TFMS) were detected in most samples, including samples collected at locations presumably receiving PFAA input solely from long-range processes. The flux of TFA, PFPrA, PFBA, and TFMS per precipitation event was in the ranges of 22-1800, 0.79-16, 0.19-170, and 1.5-57 ng/m2, respectively. A positive correlation between the flux of TFA, PFPrA, and PFBA with downward short-wave solar radiation was observed. No correlation was observed between the flux of TFMS and solar radiation. These findings suggest that atmospheric transport of volatile precursors and their subsequent degradation plays a major role in the global distribution of C2-C4 perfluoroalkyl carboxylic acids and their consequential deposition in Arctic environments. The discovery of TFMS in surface snow at these remote Arctic locations suggests that TFMS is globally distributed. However, the transport mechanism to the Arctic environment remains unknown.
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Affiliation(s)
- Maria K. Björnsdotter
- Man-Technology-Environment
Research Centre (MTM), Örebro University, Örebro SE-701 82, Sweden
| | - William F. Hartz
- Department
of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, United Kingdom
- Department
of Arctic Geology, University Centre in
Svalbard (UNIS), Longyearbyen, Svalbard NO-9171, Norway
| | - Roland Kallenborn
- Faculty
of Chemistry, Biotechnology and Food Sciences (KBM), Norwegian University of Life Sciences (NMBU), Ås NO-1432, Norway
- Department
of Arctic Technology, University Centre
in Svalbard (UNIS), Longyearbyen, Svalbard NO-9171, Norway
| | - Ingrid Ericson Jogsten
- Man-Technology-Environment
Research Centre (MTM), Örebro University, Örebro SE-701 82, Sweden
| | - Jack D. Humby
- Ice Dynamics
and Paleoclimate, British Antarctic Survey, High Cross, Cambridge CB3 0ET, United
Kingdom
| | - Anna Kärrman
- Man-Technology-Environment
Research Centre (MTM), Örebro University, Örebro SE-701 82, Sweden
| | - Leo W. Y. Yeung
- Man-Technology-Environment
Research Centre (MTM), Örebro University, Örebro SE-701 82, Sweden
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Nickerson A, Maizel AC, Olivares CI, Schaefer CE, Higgins CP. Simulating Impacts of Biosparging on Release and Transformation of Poly- and Perfluorinated Alkyl Substances from Aqueous Film-Forming Foam-Impacted Soil. Environ Sci Technol 2021; 55:15744-15753. [PMID: 34748313 DOI: 10.1021/acs.est.1c03448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Poly- and perfluorinated alkyl substances (PFASs) frequently co-occur with fuel-derived contaminants because of the use of aqueous film-forming foam (AFFF). Biosparging is a common remediation technology that injects oxygen into the saturated zone to encourage aerobic biodegradation, thereby altering aquifer redox conditions and potentially facilitating the biotransformation of polyfluorinated substances. Between 136 and 280 pore volumes of nitrogen-sparged or oxygen-sparged artificial groundwater amended with toluene were pumped through four saturated, AFFF-impacted soil columns to assess impacts on PFAS release and transformation. Column effluents and soils were analyzed for PFASs by high-resolution mass spectrometry. Significantly higher concentrations of five PFASs eluted from O2-sparged columns compared to N2-sparged columns shortly after sparging was initiated. The mass fractions eluted of many zwitterionic, sulfonamide-based PFASs were higher in both sets of columns than unaltered, non-biostimulated columns. Mass balance calculations suggested the transformation of sulfonamide-based precursors to perfluorinated sulfonamides (i.e., perfluorohexanesulfonamide) in oxygen- and nitrogen-sparged columns: recoveries of perfluorinated sulfonamides were 158-235% for C3-C6 homologs but recoveries of several prominent sulfonamide-based zwitterions were low. For example, the recovery of n-carboxyethyldimethyl-ammoniopropyl perfluorohexanesulfonamide was 9-13%. These results suggest biosparging can enhance the transformation and release of PFASs in saturated soils, which has important implications for site characterization and remediation.
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Affiliation(s)
- Anastasia Nickerson
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St, Golden, Colorado 80401, United States
| | - Andrew C Maizel
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St, Golden, Colorado 80401, United States
| | - Christopher I Olivares
- Department of Civil and Environmental Engineering, University of California Berkeley, Berkeley, California 94720, United States
| | | | - Christopher P Higgins
- Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St, Golden, Colorado 80401, United States
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Hu H, Shi A, Liu H, Liu L, Fauconnier ML, Wang Q. Study on Key Aroma Compounds and Its Precursors of Peanut Oil Prepared with Normal- and High-Oleic Peanuts. Foods 2021; 10:3036. [PMID: 34945587 DOI: 10.3390/foods10123036] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 11/30/2021] [Accepted: 12/04/2021] [Indexed: 01/19/2023] Open
Abstract
High-oleic acid peanut oil has developed rapidly in China in recent years due to its high oxidative stability and nutritional properties. However, consumer feedback showed that the aroma of high-oleic peanut oil was not as good as the oil obtained from normal-oleic peanut variety. The aim of this study was to investigate the key volatile compounds and precursors of peanut oil prepared with normal- and high-oleic peanuts. The peanut raw materials and oil processing samples used in the present study were collected from a company in China. Sensory evaluation results indicated that normal-oleic peanut oil showed stronger characteristic flavor than high-oleic peanut oil. The compounds methylpyrazine, 2,5-dimethylpyrazine, 2-ethyl-5-methylpyrazine and benzaldehyde were considered as key volatiles which contribute to dark roast, roast peanutty and sweet aroma of peanut oil. The initial concentration of volatile precursors (arginine, tyrosine, lysine and glucose) in normal-oleic peanut was higher than in high-oleic peanut, which led to more characteristic volatiles forming during process and provided a stronger oil aroma of. The present research will provide data support for raw material screening and sensory quality improvement during high-oleic acid peanut oil industrial production.
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Yu J, Liu Y, Han S, Tan Q, Liu L, Li J. Unveiling Sodium Ion Pollution in Spray-Dried Precursors and Its Implications for the Green Upcycling of Spent Lithium-Ion Batteries. Environ Sci Technol 2021; 55:14897-14905. [PMID: 34664935 DOI: 10.1021/acs.est.1c05511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Unclear impurity pollution is one of the key scientific problems that limit the large-scale production of new lithium-ion batteries (LIBs) from spent LIBs. This work is the first to report the pollution path, pollution degree, and solution method of sodium ions in the recycling process of spent LIBs in the real world. The results show that sodium ions can intrude into the precursor particles to form crystalline salts with the anion of the leaching acid that cover the transition metal elements, thereby resulting in a failed precursor. Specifically, the intrusion of sodium ions will produce a variety of pollutants containing metal oxide bonds, such as Na-O, NaO2, and Na+-O2, on the precursor surface. These active lattice oxygen will further adsorb or react to form organic oxygen, chemical oxygen, and free oxygen, which will highly deteriorate the surface cleanliness. Strictly controlling the consumption of sodium salt in each step and using ammonia instead of NaOH for pH regulation can effectively solve sodium ion pollution to prepare high-quality battery precursors. It reveals that for the green upcycling of spent LIBs, we should strengthen the design of the recycling process to reduce the consumption of chemical reagents, which will produce unexpected secondary pollution.
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Affiliation(s)
- Jiadong Yu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yanjun Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Shiping Han
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Quanyin Tan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Lili Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jinhui Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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Lin Z, Zhang W, Cai Q, Xu X, Dong H, Mu C, Zhang J. Precursor Engineering of the Electron Transport Layer for Application in High-Performance Perovskite Solar Cells. Adv Sci (Weinh) 2021; 8:e2102845. [PMID: 34633769 PMCID: PMC8596138 DOI: 10.1002/advs.202102845] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/02/2021] [Indexed: 06/13/2023]
Abstract
The electron transport layer (ETL) is a key component of regular perovskite solar cells to promote the overall charge extraction efficiency and tune the crystallinity of the perovskite layer for better device performance. The authors present a novel protocol of ETL engineering by incorporating a composition of the perovskite precursor, methylammonium chloride (MACl), or formamidine chloride (FACl), into SnO2 layers, which are then converted into the crystal nuclei of perovskites by reaction with PbI2 . The SnO2 -embedded nuclei remarkably improve the morphology and crystallinity of the optically active perovskite layers. The improved ETL-to-perovskite electrical contact and dense packing of large-grained perovskites enhance the carrier mobility and suppress charge recombination. The power conversion efficiency increases from 20.12% (blank device) to 21.87% (21.72%) for devices with MACl (FACl) as an ETL dopant. Moreover, all the precursor-engineered cells exhibit a record-high fill factor (82%).
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Affiliation(s)
- Zhichao Lin
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Wenqi Zhang
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Qingbin Cai
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Xiangning Xu
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Hongye Dong
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Cheng Mu
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Jian‐Ping Zhang
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
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Fang C, Yang X, Ding S, Luan X, Xiao R, Du Z, Wang P, An W, Chu W. Characterization of Dissolved Organic Matter and Its Derived Disinfection Byproduct Formation along the Yangtze River. Environ Sci Technol 2021; 55:12326-12336. [PMID: 34297564 DOI: 10.1021/acs.est.1c02378] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The Yangtze River basin covers one-fifth of China's land area and serves as a water source for one-third of China's population. During long-distance water transport from upstream to downstream, various sources of dissolved organic matter (DOM) lead to considerable variation in DOM properties, significantly impacting water treatability and disinfection byproduct (DBP) formation after chlorination. Using size-exclusion chromatography and fluorescence spectroscopy, the spatial variation in DOM characteristics was comprehensively investigated on a basin scale. The formation of 36 DBPs and speciated total organic halogen in chlorinated samples was determined. Overall, the Yangtze River waters featured a high proportion of terrestrially derived humic substances that served as important precursors for trihalomethanes and haloacetic acids, which was responsible for the increase in total DBP formation along the Yangtze River. The downstream waters were characterized by high levels of microbially derived protein-like biopolymers, which significantly contributed to the formation of haloacetaldehydes and haloacetonitriles that dominated DBP-associated mammalian cell cytotoxicity. Moreover, the precursors of haloacetaldehydes and haloacetonitriles in downstream waters were highly hydrophilic, posing a challenge for water treatment. This study presents an extensive basin-scale study, providing insights into DOM variations along the Yangtze River, illustrating the impact of DOM properties on drinking water from a DBP perspective.
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Affiliation(s)
- Chao Fang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Xu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Shunke Ding
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Xinmiao Luan
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Rong Xiao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Zhenqi Du
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Pin Wang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
| | - Wei An
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenhai Chu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Yangpu District, Shanghai 200092, China
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Shojaei M, Kumar N, Chaobol S, Wu K, Crimi M, Guelfo J. Enhanced Recovery of Per- and Polyfluoroalkyl Substances (PFASs) from Impacted Soils Using Heat Activated Persulfate. Environ Sci Technol 2021; 55:9805-9816. [PMID: 34228927 DOI: 10.1021/acs.est.0c08069] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Varying transport potential of cationic, zwitterionic, and anionic per- and polyfluoroalkyl substances (PFASs) may pose challenges for remediation of aqueous film forming foam (AFFF) impacted sites, particularly during groundwater extraction. Slow desorption of stronger sorbing, zwitterionic, and cationic PFASs may cause extended remediation times and rebound in aqueous PFAS concentrations. Persulfate oxidation has the potential to convert a complex mixture of PFASs into a simpler and more recoverable mixture of perfluoroalkyl acids (PFAAs). AFFF-impacted soils were treated with heat-activated persulfate in batch reactors and subjected to 7-day leaching experiments. Soil and water were analyzed using a combination of targeted and high resolution liquid chromatography mass spectrometry techniques as well as the total oxidizable precursors assay. Following oxidation, total PFAS composition showed the expected shift to a higher fraction of PFAAs, and this led to higher total PFAS leaching in pretreated reactors (108-110%) vs control reactors (62-90%). In both pretreated and control soils, precursors that remained following leaching experiments were 61-100% cationic and zwitterionic. Results suggest that persulfate pretreatment of soils has promise as an enhanced recovery technique for remediation of total PFASs in impacted soils. They also demonstrate that PFAS distribution may have been altered at sites where in situ chemical oxidation was applied to treat co-occurring contaminants of concern.
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Affiliation(s)
- Marzieh Shojaei
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Box 41023, Lubbock, Texas 79409, United States
| | - Naveen Kumar
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Box 41023, Lubbock, Texas 79409, United States
| | - Suparada Chaobol
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Box 41023, Lubbock, Texas 79409, United States
| | - Ke Wu
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Box 41023, Lubbock, Texas 79409, United States
| | - Michelle Crimi
- Engineering and Management, Clarkson University, Potsdam, New York 13699, United States
| | - Jennifer Guelfo
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Box 41023, Lubbock, Texas 79409, United States
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Verochkina EA, Vchislo NV, Rozentsveig IB. α-Functionally Substituted α,β-Unsaturated Aldehydes as Fine Chemicals Reagents: Synthesis and Application. Molecules 2021; 26:4297. [PMID: 34299572 DOI: 10.3390/molecules26144297] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/12/2021] [Accepted: 07/14/2021] [Indexed: 11/16/2022] Open
Abstract
α-Functionalized α,β-unsaturated aldehydes is an important class of compounds, which are widely used in fine organic synthesis, biology, medicine and pharmacology, chemical industry, and agriculture. Some of the 2-substituted 2-alkenals are found to be the key metabolites in plant and animal cells. Therefore, the development of efficient methods for their synthesis attracts the attention of organic chemists. This review focusses on the recent advances in the synthesis of 2-functionally substituted 2-alkenals. The approaches to the preparation of α-alkyl α,β-unsaturated aldehydes are not included in this review.
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Sarcognato S, Sacchi D, Fassan M, Fabris L, Cadamuro M, Zanus G, Cataldo I, Covelli C, Capelli P, Furlanetto A, Guido M. Benign biliary neoplasms and biliary tumor precursors. Pathologica 2021; 113:147-157. [PMID: 34294933 PMCID: PMC8299320 DOI: 10.32074/1591-951x-251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/04/2021] [Indexed: 12/21/2022] Open
Abstract
Benign biliary tumor are common lesions that are often an incidental finding in subjects who undergo medical imaging tests for other conditions. Most are true neoplasms while few result from reactive or malformative proliferation. Benign tumors have no clinical consequences, although the premalignant nature or potential for malignant transformation is of concern in some cases. The main practical problem for pathologists is the need to differentiate them from malignant biliary tumours, which is not always straightforward. Premalignant lesions of the bile duct have been described, although their incidence has been poorly characterized. These lesions include biliary mucinous cystic neoplasms, intraductal papillary neoplasms of the bile duct, and biliary intraepithelial neoplasia. In this article, histopathology of benign biliary tumors and biliary tumor precursors is discussed, with a focus on the main diagnostic criteria.
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Affiliation(s)
| | - Diana Sacchi
- Department of Pathology, Azienda ULSS2 Marca Trevigiana, Treviso, Italy
| | - Matteo Fassan
- Department of Medicine - DIMED, University of Padova, Padova, Italy
| | - Luca Fabris
- Department of Molecular Medicine - DMM, University of Padova, Padova, Italy
| | | | - Giacomo Zanus
- 4 Surgery Unit, Azienda ULSS2 Marca Trevigiana, Treviso, Italy
- Department of Surgery, Oncology and Gastroenterology - DISCOG, University of Padova, Padova, Italy
| | - Ivana Cataldo
- Department of Pathology, Azienda ULSS2 Marca Trevigiana, Treviso, Italy
| | - Claudia Covelli
- Pathology Unit, Fondazione IRCCS “Casa Sollievo della Sofferenza”, San GiovanniRotondo, Italy
| | - Paola Capelli
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy
| | | | - Maria Guido
- Department of Pathology, Azienda ULSS2 Marca Trevigiana, Treviso, Italy
- Department of Medicine - DIMED, University of Padova, Padova, Italy
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Rudaz D, Vandeleur CL, Gholam M, Castelao E, Strippoli MPF, Marquet P, Aubry JM, Merikangas KR, Preisig M. Psychopathological precursors of the onset of mood disorders in offspring of parents with and without mood disorders: results of a 13-year prospective cohort high-risk study. J Child Psychol Psychiatry 2021; 62:404-413. [PMID: 32841378 DOI: 10.1111/jcpp.13307] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 01/23/2023]
Abstract
BACKGROUND There is still limited evidence from prospective high-risk research on the evolution of specific disorders that may emerge early in the development of mood disorders. Moreover, few studies have examined the specificity of mood disorder subtypes among offspring of parents with both major subtypes of mood disorders and controls based on prospective tracking across the transition from childhood to adulthood. Our specific objectives were to (a) identify differences in patterns of psychopathological precursors among youth with (hypo)mania compared to MDD and (b) examine whether these patterns differ by subtypes of parental mood disorders. METHODS Our data stem from a prospective cohort study of 449 directly interviewed offspring (51% female, mean age 10.1 years at study intake) of 88 patients with BPD, 71 with MDD, 30 with substance use disorders and 60 medical controls. The mean duration of follow-up was 13.2 years with evaluations conducted every three years. RESULTS Within the whole cohort of offspring, MDE (Hazard Ratio = 4.44; 95%CI: 2.19-9.02), CD (HR = 3.31;1.55-7.07) and DUD (HR = 2.54; 1.15-5.59) predicted the onset of (hypo)manic episodes, whereas MDD in offspring was predicted by SAD (HR = 1.53; 1.09-2.15), generalized anxiety (HR = 2.56; 1.05-6.24), and panic disorder (HR = 3.13; 1.06-9.23). The early predictors of (hypo)mania in the whole cohort were also significantly associated with the onset of (hypo)mania among the offspring of parents with BPD. CONCLUSIONS The onset of mood disorders is frequently preceded by identifiable depressive episodes and nonmood disorders. These precursors differed by mood subtype in offspring. High-risk offspring with these precursors should be closely monitored to prevent the further development of MDD or conversion to BPD.
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Affiliation(s)
- Dominique Rudaz
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Caroline L Vandeleur
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Mehdi Gholam
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Enrique Castelao
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Marie-Pierre F Strippoli
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Pierre Marquet
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Institute of Mental Health, Laval University, Québec, QC, Canada
| | - Jean-Michel Aubry
- Department of Psychiatry, University Hospital of Geneva, Geneva, Switzerland
| | - Kathleen R Merikangas
- Genetic Epidemiology Research Branch, Intramural Research Program, National Institute of Mental Health, Bethesda, MD, USA
| | - Martin Preisig
- Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Kaur P, Mai L, Muriqi A, Zanders D, Ghiyasi R, Safdar M, Boysen N, Winter M, Nolan M, Karppinen M, Devi A. Rational Development of Guanidinate and Amidinate Based Cerium and Ytterbium Complexes as Atomic Layer Deposition Precursors: Synthesis, Modeling, and Application. Chemistry 2021; 27:4913-4926. [PMID: 33470473 PMCID: PMC7986905 DOI: 10.1002/chem.202003907] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/02/2020] [Indexed: 11/06/2022]
Abstract
Owing to the limited availability of suitable precursors for vapor phase deposition of rare-earth containing thin-film materials, new or improved precursors are sought after. In this study, we explored new precursors for atomic layer deposition (ALD) of cerium (Ce) and ytterbium (Yb) containing thin films. A series of homoleptic tris-guanidinate and tris-amidinate complexes of cerium (Ce) and ytterbium (Yb) were synthesized and thoroughly characterized. The C-substituents on the N-C-N backbone (Me, NMe2 , NEt2 , where Me=methyl, Et=ethyl) and the N-substituents from symmetrical iso-propyl (iPr) to asymmetrical tertiary-butyl (tBu) and Et were systematically varied to study the influence of the substituents on the physicochemical properties of the resulting compounds. Single crystal structures of [Ce(dpdmg)3 ] 1 and [Yb(dpdmg)3 ] 6 (dpdmg=N,N'-diisopropyl-2-dimethylamido-guanidinate) highlight a monomeric nature in the solid-state with a distorted trigonal prismatic geometry. The thermogravimetric analysis shows that the complexes are volatile and emphasize that increasing asymmetry in the complexes lowers their melting points while reducing their thermal stability. Density functional theory (DFT) was used to study the reactivity of amidinates and guanidinates of Ce and Yb complexes towards oxygen (O2 ) and water (H2 O). Signified by the DFT calculations, the guanidinates show an increased reactivity toward water compared to the amidinate complexes. Furthermore, the Ce complexes are more reactive compared to the Yb complexes, indicating even a reactivity towards oxygen potentially exploitable for ALD purposes. As a representative precursor, the highly reactive [Ce(dpdmg)3 ] 1 was used for proof-of-principle ALD depositions of CeO2 thin films using water as co-reactant. The self-limited ALD growth process could be confirmed at 160 °C with polycrystalline cubic CeO2 films formed on Si(100) substrates. This study confirms that moving towards nitrogen-coordinated rare-earth complexes bearing the guanidinate and amidinate ligands can indeed be very appealing in terms of new precursors for ALD of rare earth based materials.
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Affiliation(s)
- Parmish Kaur
- Inorganic Materials ChemistryRuhr University BochumUniversitätsstraße 15044801BochumGermany
| | - Lukas Mai
- Inorganic Materials ChemistryRuhr University BochumUniversitätsstraße 15044801BochumGermany
| | - Arbresha Muriqi
- Tyndall National InstituteUniversity College CorkLee MaltingsCorkT12 R5CPIreland
| | - David Zanders
- Inorganic Materials ChemistryRuhr University BochumUniversitätsstraße 15044801BochumGermany
| | - Ramin Ghiyasi
- Department of Chemistry and Materials ScienceAalto UniversityKemistintie 100076AaltoEspooFinland
| | - Muhammad Safdar
- Department of Chemistry and Materials ScienceAalto UniversityKemistintie 100076AaltoEspooFinland
| | - Nils Boysen
- Inorganic Materials ChemistryRuhr University BochumUniversitätsstraße 15044801BochumGermany
| | - Manuela Winter
- Inorganic Materials ChemistryRuhr University BochumUniversitätsstraße 15044801BochumGermany
| | - Michael Nolan
- Tyndall National InstituteUniversity College CorkLee MaltingsCorkT12 R5CPIreland
| | - Maarit Karppinen
- Department of Chemistry and Materials ScienceAalto UniversityKemistintie 100076AaltoEspooFinland
| | - Anjana Devi
- Inorganic Materials ChemistryRuhr University BochumUniversitätsstraße 15044801BochumGermany
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Yang DS, Saeedi A, Davtyan A, Fathi M, Sherman MB, Safari MS, Klindziuk A, Barton MC, Varadarajan N, Kolomeisky AB, Vekilov PG. Mesoscopic protein-rich clusters host the nucleation of mutant p53 amyloid fibrils. Proc Natl Acad Sci U S A 2021; 118:e2015618118. [PMID: 33653952 PMCID: PMC7958401 DOI: 10.1073/pnas.2015618118] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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] [Indexed: 12/11/2022] Open
Abstract
The protein p53 is a crucial tumor suppressor, often called "the guardian of the genome"; however, mutations transform p53 into a powerful cancer promoter. The oncogenic capacity of mutant p53 has been ascribed to enhanced propensity to fibrillize and recruit other cancer fighting proteins in the fibrils, yet the pathways of fibril nucleation and growth remain obscure. Here, we combine immunofluorescence three-dimensional confocal microscopy of human breast cancer cells with light scattering and transmission electron microscopy of solutions of the purified protein and molecular simulations to illuminate the mechanisms of phase transformations across multiple length scales, from cellular to molecular. We report that the p53 mutant R248Q (R, arginine; Q, glutamine) forms, both in cancer cells and in solutions, a condensate with unique properties, mesoscopic protein-rich clusters. The clusters dramatically diverge from other protein condensates. The cluster sizes are decoupled from the total cluster population volume and independent of the p53 concentration and the solution concentration at equilibrium with the clusters varies. We demonstrate that the clusters carry out a crucial biological function: they host and facilitate the nucleation of amyloid fibrils. We demonstrate that the p53 clusters are driven by structural destabilization of the core domain and not by interactions of its extensive unstructured region, in contradistinction to the dense liquids typical of disordered and partially disordered proteins. Two-step nucleation of mutant p53 amyloids suggests means to control fibrillization and the associated pathologies through modifying the cluster characteristics. Our findings exemplify interactions between distinct protein phases that activate complex physicochemical mechanisms operating in biological systems.
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Affiliation(s)
- David S Yang
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204
| | - Arash Saeedi
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204
| | - Aram Davtyan
- Department of Chemistry, Rice University, Houston, TX 77251
| | - Mohsen Fathi
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204
| | - Michael B Sherman
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555
- Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, TX 77555
| | - Mohammad S Safari
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544
| | | | - Michelle C Barton
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030
| | - Navin Varadarajan
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204
| | - Anatoly B Kolomeisky
- Department of Chemistry, Rice University, Houston, TX 77251
- Center for Theoretical Biological Physics, Rice University, Houston, TX 77251
| | - Peter G Vekilov
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204;
- Department of Chemistry, University of Houston, Houston, TX 77204
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Wu X, Zhang Z, He Z, Wang Z, Qin F, Zeng M, Chen J. Effect of Freeze-Thaw Cycles on the Oxidation of Protein and Fat and Its Relationship with the Formation of Heterocyclic Aromatic Amines and Advanced Glycation End Products in Raw Meat. Molecules 2021; 26:molecules26051264. [PMID: 33652771 PMCID: PMC7956273 DOI: 10.3390/molecules26051264] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/12/2021] [Accepted: 02/18/2021] [Indexed: 12/30/2022] Open
Abstract
The aim of this research was to investigate the effect of the number of freeze–thaw cycles (0, 1, 3, 5, and 7) on porcine longissimus protein and lipid oxidation, as well as changes in heterocyclic aromatic amines (HAAs) and advanced glycation end products (AGEs) and their precursors. We analyzed the relationship among HAAs, AGEs, oxidation, and precursors and found the following results after seven freeze–thaw cycles. The HAAs, Norharman and Harman, were 20.33% and 16.67% higher, respectively. The AGEs, Nε-carboxyethyllysine (CEL) and Nε-carboxymethyllysine (CML), were 11.81% and 14.02% higher, respectively. Glucose, creatine, and creatinine were reduced by 33.92%, 5.93%, and 1.12%, respectively after seven freeze–thaw cycles. Norharman was significantly correlated with thiobarbituric acid reactive substances (TBARS; r2 = 0.910) and glucose (r2 = −0.914). Harman was significantly correlated to TBARS (r2 = 0.951), carbonyl (r2 = 0.990), and glucose (r2 = −0.920). CEL was correlated to TBARS (r2 = 0.992) and carbonyl (r2 = 0.933). These changes suggest that oxidation and the Maillard reaction during freeze–thaw cycles promote HAA and AGE production in raw pork.
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Affiliation(s)
- Xingge Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.W.); (Z.H.); (Z.W.); (F.Q.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Zhigang Zhang
- State Key Laboratory of Food Safety Technology for Meat Products, Yinxiang Group, Xianmen 361100, China;
| | - Zhiyong He
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.W.); (Z.H.); (Z.W.); (F.Q.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Zhaojun Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.W.); (Z.H.); (Z.W.); (F.Q.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Fang Qin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.W.); (Z.H.); (Z.W.); (F.Q.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Maomao Zeng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.W.); (Z.H.); (Z.W.); (F.Q.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
- Correspondence: (M.Z.); (J.C.); Tel.: +86-510-85919065 (M.Z.)
| | - Jie Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.W.); (Z.H.); (Z.W.); (F.Q.)
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
- Correspondence: (M.Z.); (J.C.); Tel.: +86-510-85919065 (M.Z.)
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Li Z, Mao R, Meng QF, Hu X, Li HX. Exploring Precursors of Construction Accidents in China: A Grounded Theory Approach. Int J Environ Res Public Health 2021; 18:E410. [PMID: 33430202 DOI: 10.3390/ijerph18020410] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 11/16/2022]
Abstract
The implementation of precursor management can improve safety performance of construction projects through effectively managing the correlations between construction accidents and their precursors. However, a system of comprehensive knowledge about what precursors mean within the context of construction safety is still lacking. This study aims to capture the nature of precursors in the construction industry and explore the process of a precursor event evolving into a construction accident to fill this gap. Based on 135 construction accident reports in China, this study adopts grounded theory to identify different types of accident precursors and explore their interactions with the development of the accident. An indicator system of precursors for construction accidents was developed, which included two major categories of precursors: behavioral factors and physical factors and five minor categories of precursors: individual behavior factors, organizational driving factors, objective physical factors, construction environmental factors, mechanical equipment factors. In addition, a precursor management strategy that includes the three stages of identification, response and effectiveness testing was established. The results of the study reveal the correlations between precursors and construction accidents, which can promote construction professionals' better understanding about precursors and improve their capabilities of managing precursors in practice.
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