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Bates JN, Baby SM, Getsy PM, Coffee GA, Hsieh YH, Knauss ZT, Dahan A, Bubier JA, MacFarlane PM, Mueller D, Lewis SJ. L-NAC and L-NAC methyl ester prevent and overcome physical dependence to fentanyl in male rats. Sci Rep 2024; 14:9091. [PMID: 38643270 PMCID: PMC11032344 DOI: 10.1038/s41598-024-59551-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 04/11/2024] [Indexed: 04/22/2024] Open
Abstract
N-acetyl-L-cysteine (L-NAC) is a proposed therapeutic for opioid use disorder. This study determined whether co-injections of L-NAC (500 μmol/kg, IV) or its highly cell-penetrant analogue, L-NAC methyl ester (L-NACme, 500 μmol/kg, IV), prevent acquisition of acute physical dependence induced by twice-daily injections of fentanyl (125 μg/kg, IV), and overcome acquired dependence to these injections in freely-moving male Sprague Dawley rats. The injection of the opioid receptor antagonist, naloxone HCl (NLX; 1.5 mg/kg, IV), elicited a series of withdrawal phenomena (i.e. behavioral and cardiorespiratory responses, hypothermia and body weight loss) in rats that received 5 or 10 injections of fentanyl and similar numbers of vehicle co-injections. With respect to the development of dependence, the NLX-precipitated withdrawal phenomena were reduced in rats that received had co-injections of L-NAC, and more greatly reduced in rats that received co-injections of L-NACme. In regard to overcoming established dependence, the NLX-precipitated withdrawal phenomena in rats that had received 10 injections of fentanyl (125 μg/kg, IV) were reduced in rats that had received co-injections of L-NAC, and more greatly reduced in rats that received co-injections of L-NACme beginning with injection 6 of fentanyl. This study provides compelling evidence that co-injections of L-NAC and L-NACme prevent the acquisition of physical dependence and overcome acquired dependence to fentanyl in male rats. The higher efficacy of L-NACme is likely due to its greater cell penetrability in brain regions mediating dependence to fentanyl and interaction with intracellular signaling cascades, including redox-dependent processes, responsible for the acquisition of physical dependence to fentanyl.
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Affiliation(s)
- James N Bates
- Department of Anesthesiology, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
- Atelerix Life Sciences Inc., 300 East Main Street, Suite 202, Charlottesville, VA, USA
| | - Santhosh M Baby
- Section of Biology, Galleon Pharmaceuticals, Inc, Horsham, PA, USA
- Translational Sciences Treatment Discovery, Galvani Bioelectronics, Inc, 1250 S Collegeville Rd, Collegeville, PA, USA
| | - Paulina M Getsy
- Department of Pediatrics, Division of Pulmonology, Allergy, and Immunology, Case Western Reserve University, Cleveland, OH, USA
| | - Gregory A Coffee
- Department of Pediatrics, Division of Pulmonology, Allergy, and Immunology, Case Western Reserve University, Cleveland, OH, USA
| | - Yee-Hsee Hsieh
- Division of Pulmonary, Critical Care and Sleep Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Zackery T Knauss
- Department of Biological Sciences, Kent State University, Kent, OH, USA
| | - Albert Dahan
- Department of Anesthesiology, Leiden University Medical Center, Leiden, Netherlands
| | | | - Peter M MacFarlane
- Department of Pediatrics, Division of Pulmonology, Allergy, and Immunology, Case Western Reserve University, Cleveland, OH, USA
| | - Devin Mueller
- Department of Biological Sciences, Kent State University, Kent, OH, USA
| | - Stephen J Lewis
- Department of Pediatrics, Division of Pulmonology, Allergy, and Immunology, Case Western Reserve University, Cleveland, OH, USA.
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH, USA.
- Functional Electrical Stimulation Center, Case Western Reserve University, Cleveland, OH, USA.
- Department of Pediatrics, Division of Pulmonology, Allergy and Immunology, School of Medicine,, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, USA.
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2
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Pazi MB, Belan DV, Komarova EY, Ekimova IV. Intranasal Administration of GRP78 Protein (HSPA5) Confers Neuroprotection in a Lactacystin-Induced Rat Model of Parkinson's Disease. Int J Mol Sci 2024; 25:3951. [PMID: 38612761 PMCID: PMC11011682 DOI: 10.3390/ijms25073951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/23/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
The accumulation of misfolded and aggregated α-synuclein can trigger endoplasmic reticulum (ER) stress and the unfolded protein response (UPR), leading to apoptotic cell death in patients with Parkinson's disease (PD). As the major ER chaperone, glucose-regulated protein 78 (GRP78/BiP/HSPA5) plays a key role in UPR regulation. GRP78 overexpression can modulate the UPR, block apoptosis, and promote the survival of nigral dopamine neurons in a rat model of α-synuclein pathology. Here, we explore the therapeutic potential of intranasal exogenous GRP78 for preventing or slowing PD-like neurodegeneration in a lactacystin-induced rat model. We show that intranasally-administered GRP78 rapidly enters the substantia nigra pars compacta (SNpc) and other afflicted brain regions. It is then internalized by neurons and microglia, preventing the development of the neurodegenerative process in the nigrostriatal system. Lactacystin-induced disturbances, such as the abnormal accumulation of phosphorylated pS129-α-synuclein and activation of the pro-apoptotic GRP78/PERK/eIF2α/CHOP/caspase-3,9 signaling pathway of the UPR, are substantially reversed upon GRP78 administration. Moreover, exogenous GRP78 inhibits both microglia activation and the production of proinflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), via the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling pathway in model animals. The neuroprotective and anti-inflammatory potential of exogenous GRP78 may inform the development of effective therapeutic agents for PD and other synucleinopathies.
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Affiliation(s)
- Maria B. Pazi
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 44 Thorez pr., St. Petersburg 194223, Russia;
| | - Daria V. Belan
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 44 Thorez pr., St. Petersburg 194223, Russia;
| | - Elena Y. Komarova
- Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky pr., St. Petersburg 194064, Russia;
| | - Irina V. Ekimova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 44 Thorez pr., St. Petersburg 194223, Russia;
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Wang F, Ye L, Jiang X, Zhang R, Chen S, Chen L, Yu H, Zeng X, Li D, Xing X, Xiao Y, Chen W. Specific CpG sites methylation is associated with hematotoxicity in low-dose benzene-exposed workers. Environ Int 2024; 186:108645. [PMID: 38615541 DOI: 10.1016/j.envint.2024.108645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/10/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Benzene is a broadly used industrial chemicals which causes various hematologic abnormalities in human. Altered DNA methylation has been proposed as epigenetic biomarkers in health risk evaluation of benzene exposure, yet the role of methylation at specific CpG sites in predicting hematological effects remains unclear. In this study, we recruited 120 low-level benzene-exposed and 101 control male workers from a petrochemical factory in Maoming City, Guangdong Province, China. Urinary S-phenylmercapturic acid (SPMA) in benzene-exposed workers was 3.40-fold higher than that in control workers (P < 0.001). Benzene-induced hematotoxicity was characterized by reduced white blood cells counts and nuclear division index (NDI), along with an increased DNA damage and urinary 8-hydroxy-2'-deoxyguanosine (all P < 0.05). Methylation levels of TRIM36, MGMT and RASSF1a genes in peripheral blood lymphocytes (PBLCs) were quantified by pyrosequencing. CpG site 6 of TRIM36, CpG site 2, 4, 6 of RASSF1a and CpG site 1, 3 of MGMT methylation were recognized as hot CpG sites due to a strong correlation with both internal exposure and hematological effects. Notably, integrating hot CpG sites methylation of multiple genes reveal a higher efficiency in prediction of integrative damage compared to individual genes at hot CpG sites. The negative dose-response relationship between the combined methylation of hot CpG sites in three genes and integrative damage enabled the classification of benzene-exposed individuals into high-risk or low-risk groups using the median cut-off value of the integrative index. Subsequently, a prediction model for integrative damage in benzene-exposed populations was built based on the methylation status of the identified hot CpG sites in the three genes. Taken together, these findings provide a novel insight into application prospect of specific CpG site methylation as epi-biomarkers for health risk assessment of environmental pollutants.
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Affiliation(s)
- Feier Wang
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Lizhu Ye
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China; Boji Drug Evaluation Center, Boji Medical Technology Co., Ltd, Guangzhou, China
| | - Xinhang Jiang
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Rui Zhang
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shen Chen
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Liping Chen
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Hongyao Yu
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiaowen Zeng
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Daochuan Li
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiumei Xing
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yongmei Xiao
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
| | - Wen Chen
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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Simko F, Stanko P, Repova K, Baka T, Krajcirovicova K, Aziriova S, Domenig O, Zorad S, Adamcova M, Paulis L. Effect of sacubitril/valsartan on the hypertensive heart in continuous light-induced and lactacystin-induced pre-hypertension: Interactions with the renin-angiotensin-aldosterone system. Biomed Pharmacother 2024; 173:116391. [PMID: 38461685 DOI: 10.1016/j.biopha.2024.116391] [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: 12/11/2023] [Revised: 02/22/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024] Open
Abstract
This study investigated whether sacubitril/valsartan or valsartan are able to prevent left ventricular (LV) fibrotic remodelling and dysfunction in two experimental models of pre-hypertension induced by continuous light (24 hours/day) exposure or by chronic lactacystin treatment, and how this potential protection interferes with the renin-angiotensin-aldosterone system (RAAS). Nine groups of three-month-old male Wistar rats were treated for six weeks as follows: untreated controls (C), sacubitril/valsartan (ARNI), valsartan (Val), continuous light (24), continuous light plus sacubitril/valsartan (24+ARNI) or valsartan (24+Val), lactacystin (Lact), lactacystin plus sacubitil/valsartan (Lact+ARNI) or plus valsartan (Lact+Val). Both the 24 and Lact groups developed a mild but significant systolic blood pressure (SBP) increase, LV hypertrophy and fibrosis, as well as LV systolic and diastolic dysfunction. Yet, no changes in serum renin-angiotensin were observed either in the 24 or Lact groups, though aldosterone was increased in the Lact group compared to the controls. In both models, sacubitril/valsartan and valsartan reduced elevated SBP, LV hypertrophy and fibrosis and attenuated LV systolic and diastolic dysfunction. Sacubitril/valsartan and valsartan increased the serum levels of angiotensin (Ang) II, Ang III, Ang IV, Ang 1-5, Ang 1-7 in the 24 and Lact groups and reduced aldosterone in the Lact group. We conclude that both continuous light exposure and lactacystin treatment induced normal-to-low serum renin-angiotensin models of pre-hypertension, whereas aldosterone was increased in lactacystin-induced pre-hypertension. The protection by ARNI or valsartan in the hypertensive heart in either model was related to the Ang II blockade and the protective Ang 1-7, while in lactacystin-induced pre-hypertension this protection seems to be additionally related to the reduced aldosterone level.
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Affiliation(s)
- Fedor Simko
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic; 3rd Department of Internal Medicine, Faculty of Medicine, Comenius University, Bratislava 83305, Slovak Republic; Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava 84505, Slovak Republic.
| | - Peter Stanko
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic; Department of Pneumology, Phthisiology and Functional Diagnostics, Slovak Medical University and Bratislava University Hospital, Bratislava, Slovak Republic
| | - Kristina Repova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic
| | - Tomas Baka
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic
| | - Kristina Krajcirovicova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic
| | - Silvia Aziriova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic
| | | | - Stefan Zorad
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava 84505, Slovak Republic
| | - Michaela Adamcova
- Department of Physiology, Charles University, Faculty of Medicine in Hradec Kralove, Hradec Kralove 50003, Czech Republic
| | - Ludovit Paulis
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava 81108, Slovak Republic; Centre of Experimental Medicine SAS, Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Bratislava 813 71, Slovak Republic
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Andrade BF, Guimarães AS, do Carmo LR, Tanaka MS, Fontes PR, Ramos ADLS, Ramos EM. S-nitrosothiols as nitrite alternatives: Effects on residual nitrite, lipid oxidation, volatile profile, and cured color of restructured cooked ham. Meat Sci 2024; 209:109397. [PMID: 38043329 DOI: 10.1016/j.meatsci.2023.109397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/05/2023]
Abstract
This study evaluated the use of the S-nitrosothiols, S-nitroso-N-acetylcysteine (NAC-SNO) and S-nitroso-N-acetylcysteine ethyl ester (NACET-SNO), at different concentrations (25-300 mg nitrite equivalent - NEq/kg) as sodium nitrite substitutes in restructured cooked hams. The pH value and instrumental cured color were not affected by the type or amount of curing agent used. Products with 25 and 50 mg/kg ingoing nitrite had lower thiobarbituric acid-reactive substance values than those with equimolar amounts of S-nitrosothiols. Products with >150 mg NEq/kg of S-nitrosothiols had residual nitrite similar to 50 mg/kg nitrite, and this resulted in the same volatile compound profile as nitrite added in equimolar amounts. A 300 mg NEq/kg of S-nitrosothiols was required to obtain a similar and minimally stable cured pink color perception as sliced samples with 50-150 mg/kg added nitrite. The results obtained reinforce the great potential of both alternative curing agents in the complete replacement of nitrite by equimolar amounts in restructured cooked products; however, differences in cured color stability should be considered.
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Affiliation(s)
- Bruna Fernandes Andrade
- Departamento de Ciência dos Alimentos, Escola de Ciências Agrárias de Lavras, Universidade Federal de Lavras, 37200-900 Lavras, Minas Gerais, Brazil
| | - Angélica Souza Guimarães
- Departamento de Ciência dos Alimentos, Escola de Ciências Agrárias de Lavras, Universidade Federal de Lavras, 37200-900 Lavras, Minas Gerais, Brazil
| | - Lorrany Ramos do Carmo
- Departamento de Ciência dos Alimentos, Escola de Ciências Agrárias de Lavras, Universidade Federal de Lavras, 37200-900 Lavras, Minas Gerais, Brazil
| | - Marcelo Stefanini Tanaka
- Departamento de Ciência dos Alimentos, Escola de Ciências Agrárias de Lavras, Universidade Federal de Lavras, 37200-900 Lavras, Minas Gerais, Brazil
| | - Paulo Rogério Fontes
- Departamento de Tecnologia dos Alimentos, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Alcinéia de Lemos Souza Ramos
- Departamento de Ciência dos Alimentos, Escola de Ciências Agrárias de Lavras, Universidade Federal de Lavras, 37200-900 Lavras, Minas Gerais, Brazil
| | - Eduardo Mendes Ramos
- Departamento de Ciência dos Alimentos, Escola de Ciências Agrárias de Lavras, Universidade Federal de Lavras, 37200-900 Lavras, Minas Gerais, Brazil.
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Monien BH, Abraham K. Levels of 2,3-dihydroxypropyl mercapturic acid (DHPMA) in human urine do not reflect the exposure to 3-chloro-1,2-propanediol (3-MCPD) or glycidol. Environ Res 2022; 211:112977. [PMID: 35248561 DOI: 10.1016/j.envres.2022.112977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Bernhard H Monien
- German Federal Institute for Risk Assessment (BfR), Department of Food Safety, 10589, Berlin, Germany.
| | - Klaus Abraham
- German Federal Institute for Risk Assessment (BfR), Department of Food Safety, 10589, Berlin, Germany
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Wan X, Jia W, Zhuang P, Wu F, Zhang Y, Shen X, Liu X, Zheng W, Jiao J, Zhang Y. Associations of 3-monochloropropane-1,2-diol and glycidol with prevalence of metabolic syndrome: Findings from Lanxi Nutrition and Safety Study. Environ Res 2022; 209:112746. [PMID: 35063427 DOI: 10.1016/j.envres.2022.112746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
In this study, we investigated the association of 2,3-dihydroxypropyl mercapturic acid (DHPMA), a urinary biomarker of environmental and dietary exposure to 3-monochloropropane-1,2-diol and glycidol, with prevalent MetS in a Chinese middle-aged and elderly population. The urinary DHPMA concentrations were determined by ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) analysis and further calibrated by the urinary creatinine content. MetS cases were defined by the Adult Treatment Panel III criteria for Asian-Americans of National Cholesterol Education Program (NCEP/ATPIII). Multivariate-adjusted modified Poisson regression models were used to analyze the associations between the urinary DHPMA concentrations and MetS prevalence. Of the 1613 participants aged 45-75 years, we documented 552 (34.2%) MetS cases. After adjustment for potential risk factors, the relative risks (95% confidence intervals) of MetS prevalence across the increasing quartiles of DHPMA concentrations were 1.14 (0.93-1.39), 1.29 (1.06-1.56), and 1.50 (1.25-1.80), respectively, compared with the lowest quartile. We also observed strong positive association between urinary DHPMA concentrations and hypertriglyceridemia prevalence (P < 0.001 for trend). These positive associations remained unchanged in the subgroups stratified by general demographic, dietary and behavioral risk factors. These results suggested that urinary DHPMA was associated with higher prevalence of MetS among Chinese elderly people.
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Affiliation(s)
- Xuzhi Wan
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Wei Jia
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Pan Zhuang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Fei Wu
- Department of Nutrition, School of Public Health, Department of Clinical Nutrition of Affiliated Second Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, China
| | - Yiju Zhang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Xinyi Shen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Xiaohui Liu
- Department of Nutrition, School of Public Health, Department of Clinical Nutrition of Affiliated Second Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, China
| | - Weifang Zheng
- Lanxi Red Cross Hospital, Jinhua, 321000, Zhejiang, China
| | - Jingjing Jiao
- Department of Nutrition, School of Public Health, Department of Clinical Nutrition of Affiliated Second Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, China
| | - Yu Zhang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Zhejiang University, Hangzhou, 310058, Zhejiang, China; Ningbo Research Institute, Zhejiang University, Ningbo, 315100, Zhejiang, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China.
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8
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Guo X, Zhang L, Wang J, Zhang W, Ren J, Chen Y, Zhang Y, Gao A. Plasma metabolomics study reveals the critical metabolic signatures for benzene-induced hematotoxicity. JCI Insight 2022; 7:154999. [PMID: 35076025 PMCID: PMC8855792 DOI: 10.1172/jci.insight.154999] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/23/2021] [Indexed: 12/11/2022] Open
Affiliation(s)
- Xiaoli Guo
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Lei Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Jingyu Wang
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Wei Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Jing Ren
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Yujiao Chen
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Yanlin Zhang
- Research Center of Occupational Medicine, Peking University Third Hospital, Haidian District, Beijing, China
| | - Ai Gao
- Department of Occupational Health and Environmental Health, School of Public Health, and
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
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Atlas D. Emerging therapeutic opportunities of novel thiol-amides, NAC-amide (AD4/NACA) and thioredoxin mimetics (TXM-Peptides) for neurodegenerative-related disorders. Free Radic Biol Med 2021; 176:120-141. [PMID: 34481041 DOI: 10.1016/j.freeradbiomed.2021.08.239] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/17/2021] [Accepted: 08/29/2021] [Indexed: 12/23/2022]
Abstract
Understanding neurodegenerative diseases have challenged scientists for decades. It has become apparent that a decrease in life span is often correlated with the development of neurodegenerative disorders. Oxidative stress and the subsequent inflammatory damages appear to contribute to the different molecular and biochemical mechanisms associated with neurodegeneration. In this review, I examine the protective properties of novel amino acid based compounds, comprising the AD series (AD1-AD7) in particular N-acetylcysteine amide, AD4, also called NACA, and the series of thioredoxin mimetic (TXM) peptides, TXM-CB3-TXM-CB16. Designed to cross the blood-brain-barrier (BBB) and permeate the cell membrane, these antioxidant/anti-inflammatory compounds may enable effective treatment of neurodegenerative related disorders. The review addresses the molecular mechanism of cellular protection exhibited by these new reagents, focusing on the reversal of oxidative stress, mitochondrial stress, inflammatory damages, and prevention of premature cell death. In addition, it will cover the outlook of the clinical prospects of AD4/NACA and the thioredoxin-mimetic peptides, which are currently in development.
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Affiliation(s)
- Daphne Atlas
- Professor of Neurochemistry, Dept. of Biological Chemistry, Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.
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10
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Kenwood BM, McLoughlin C, Zhang L, Zhu W, Bhandari D, De Jesús VR, Blount BC. Characterization of the association between cigarette smoking intensity and urinary concentrations of 2-hydroxyethyl mercapturic acid among exclusive cigarette smokers in the National Health and Nutrition Examination Survey (NHANES) 2011-2016. Biomarkers 2021; 26:656-664. [PMID: 34409911 PMCID: PMC8517914 DOI: 10.1080/1354750x.2021.1970809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/15/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND 2-Hydroxyethyl mercapturic acid (2HEMA, N-acetyl-S-(2-hydroxyethyl)-L-cysteine) is a urinary metabolite of several volatile organic compounds including acrylonitrile and ethylene oxide, which are found in cigarette smoke. METHODS We measured 2HEMA concentrations in urine specimens collected during the National Health and Nutrition Examination Survey (2011-2016) from eligible participants aged >12 years (N = 7,416). We developed two multiple linear regression models to characterize the association between cigarette smoking and 2HEMA concentrations wherein the dependent variable was 2HEMA concentrations among participants who exclusively smoked cigarettes at the time of specimen collection and the independent variables included sex, age, race/ethnicity, creatinine, diet, and either cigarettes smoked per day (CPD) or serum cotinine. RESULTS We detected 2HEMA in 85% of samples tested among exclusive cigarette smokers, and only 40% of specimens from non-smokers. When compared to exclusive cigarette smokers who smoked 1-9 CPD, smoking 10-19 CPD was associated with 36% higher 2HEMA (p < 0.0001) and smoking >19 CPD was associated with 61% higher 2HEMA (p < 0.0001). Additionally, 2HEMA was positively associated with serum cotinine. CONCLUSIONS This study demonstrates that cigarette smoking intensity is associated with higher urinary 2HEMA concentrations and is likely a major source of acrylonitrile and/or ethylene oxide exposure.
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Affiliation(s)
- Brandon M Kenwood
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Caitlyn McLoughlin
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Luyu Zhang
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Wanzhe Zhu
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Deepak Bhandari
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Víctor R De Jesús
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Benjamin C Blount
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
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11
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Jin L, Lorkiewicz P, Xie Z, Bhatnagar A, Srivastava S, Conklin DJ. Acrolein but not its metabolite, 3-Hydroxypropylmercapturic acid (3HPMA), activates vascular transient receptor potential Ankyrin-1 (TRPA1): Physiological to toxicological implications. Toxicol Appl Pharmacol 2021; 426:115647. [PMID: 34271065 PMCID: PMC8343963 DOI: 10.1016/j.taap.2021.115647] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 11/17/2022]
Abstract
Acrolein, an electrophilic α,β-unsaturated aldehyde, is present in foods and beverages, and is a product of incomplete combustion, and thus, reaches high ppm levels in tobacco smoke and structural fires. Exposure to acrolein is linked with cardiopulmonary toxicity and cardiovascular disease risk. The hypothesis of this study is the direct effects of acrolein in isolated murine blood vessels (aorta and superior mesenteric artery, SMA) are transient receptor potential ankyrin-1 (TRPA1) dependent. Using isometric myography, isolated aorta and SMA were exposed to increasing levels of acrolein. Acrolein inhibited phenylephrine (PE)-induced contractions (approximately 90%) in aorta and SMA of male and female mice in a concentration-dependent (0.01-100 μM) manner. The major metabolite of acrolein, 3-hydroxypropylmercapturic acid (3HPMA), also relaxed PE-precontracted SMA. As the SMA was 20× more sensitive to acrolein than aorta (SMA EC50 0.8 ± 0.2 μM; aorta EC50 > 29.4 ± 4.4 μM), the mechanisms of acrolein-induced relaxation were studied in SMA. The potency of acrolein-induced relaxation was inhibited significantly by: 1) mechanically-impaired endothelium; 2) Nω-Nitro-L-arginine methyl ester hydrochloride (L-NAME); 3) guanylyl cyclase (GC) inhibitor (ODQ); and, 4) a TRPA1 antagonist (A967079). TRPA1 positive immunofluorescence was present in the endothelium. Compared with other known TRPA1 agonists, including allyl isothiocyanate (AITC), cinnamaldehyde, crotonaldehyde, and formaldehyde, acrolein stimulated a more potent TRPA1-dependent relaxation. Acrolein, at high concentration [100 μM], induced tension oscillations (spasms) independent of TRPA1 in precontracted SMA but not in aorta. In conclusion, acrolein is vasorelaxant at low levels (physiological) yet vasotoxic at high levels (toxicological).
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Affiliation(s)
- L Jin
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY, USA
| | - P Lorkiewicz
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY, USA
| | - Z Xie
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA
| | - A Bhatnagar
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY, USA; Superfund Research Center, University of Louisville, Louisville, KY, USA
| | - S Srivastava
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY, USA; Superfund Research Center, University of Louisville, Louisville, KY, USA
| | - D J Conklin
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY, USA; Superfund Research Center, University of Louisville, Louisville, KY, USA.
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12
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Matthiesen I, Voulgaris D, Nikolakopoulou P, Winkler TE, Herland A. Continuous Monitoring Reveals Protective Effects of N-Acetylcysteine Amide on an Isogenic Microphysiological Model of the Neurovascular Unit. Small 2021; 17:e2101785. [PMID: 34174140 DOI: 10.1002/smll.202101785] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/21/2021] [Indexed: 05/20/2023]
Abstract
Microphysiological systems mimic the in vivo cellular ensemble and microenvironment with the goal of providing more human-like models for biopharmaceutical research. In this study, the first such model of the blood-brain barrier (BBB-on-chip) featuring both isogenic human induced pluripotent stem cell (hiPSC)-derived cells and continuous barrier integrity monitoring with <2 min temporal resolution is reported. Its capabilities are showcased in the first microphysiological study of nitrosative stress and antioxidant prophylaxis. Relying on off-stoichiometry thiol-ene-epoxy (OSTE+) for fabrication greatly facilitates assembly and sensor integration compared to the prevalent polydimethylsiloxane devices. The integrated cell-substrate endothelial resistance monitoring allows for capturing the formation and breakdown of the BBB model, which consists of cocultured hiPSC-derived endothelial-like and astrocyte-like cells. Clear cellular disruption is observed when exposing the BBB-on-chip to the nitrosative stressor linsidomine, and the barrier permeability and barrier-protective effects of the antioxidant N-acetylcysteine amide are reported. Using metabolomic network analysis reveals further drug-induced changes consistent with prior literature regarding, e.g., cysteine and glutathione involvement. A model like this opens new possibilities for drug screening studies and personalized medicine, relying solely on isogenic human-derived cells and providing high-resolution temporal readouts that can help in pharmacodynamic studies.
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Affiliation(s)
- Isabelle Matthiesen
- Division of Micro- and Nanosystems, KTH Royal Institute of Technology, Malvinas Väg 10 pl 5, Stockholm, 100 44, Sweden
| | - Dimitrios Voulgaris
- Division of Micro- and Nanosystems, KTH Royal Institute of Technology, Malvinas Väg 10 pl 5, Stockholm, 100 44, Sweden
- AIMES, Center for Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Solnavägen 9/B8, Solna, 171 65, Sweden
| | - Polyxeni Nikolakopoulou
- AIMES, Center for Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Solnavägen 9/B8, Solna, 171 65, Sweden
| | - Thomas E Winkler
- Division of Micro- and Nanosystems, KTH Royal Institute of Technology, Malvinas Väg 10 pl 5, Stockholm, 100 44, Sweden
| | - Anna Herland
- Division of Micro- and Nanosystems, KTH Royal Institute of Technology, Malvinas Väg 10 pl 5, Stockholm, 100 44, Sweden
- AIMES, Center for Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Solnavägen 9/B8, Solna, 171 65, Sweden
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13
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Zheng D, Wang J, Li G, Sun Y, Deng Q, Li M, Song K, Zhao Z. Preliminary therapeutic and mechanistic evaluation of S-allylmercapto-N-acetylcysteine in the treatment of pulmonary emphysema. Int Immunopharmacol 2021; 98:107913. [PMID: 34218218 DOI: 10.1016/j.intimp.2021.107913] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/10/2021] [Accepted: 06/20/2021] [Indexed: 12/24/2022]
Abstract
The objective of this work was to study the effects and mechanisms of S-allylmercapto-N-acetylcysteine (ASSNAC) in the treatment of pulmonary emphysema based on network pharmacology analysis and other techniques. Firstly, the potential targets associated with ASSNAC and COPD were integrated using public databases. Then, a protein-protein interaction network was constructed using String database and Cytoscape software. The Gene Ontology analysis and Kyoto Encyclopedia of Genes and Genomes pathway analysis were performed on DAVID platform. The molecular docking of ASSNAC with some key disease targets was implemented on the SwissDock platform. To verify the results of the network pharmacology, a pulmonary emphysema mice model was established and treated with ASSNAC. Besides, the expressions of the predicted targets were detected by immunohistochemistry, Western blot analysis or enzyme-linked immunosorbent assay. Results showed that 33 overlapping targets are achieved, including CXCL8, ICAM1, MAP2K1, PTGS2, ACE and so on. The critical pathways of ASSNAC against COPD involved arachidonic acid metabolism, chemokine pathway, MAPK pathway, renin-angiotensin system, and others. Pharmacodynamic experiments demonstrated that ASSNAC decreased the pulmonary emphysema and inflammation in the pulmonary emphysema mice. Therefore, these results confirm the perspective of network pharmacology in the target verification, and indicate the treatment potential of ASSNAC against COPD.
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Affiliation(s)
- Dandan Zheng
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Jinglong Wang
- College of Food Sciences and Pharmaceutical Engineering, Zaozhuang University, Zaozhuang 277160, PR China
| | - Genju Li
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Yueyue Sun
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Qi Deng
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Muhan Li
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Kaili Song
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Zhongxi Zhao
- Department of Pharmaceutics, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China; Key University Laboratory of Pharmaceutics & Drug Delivery Systems of Shandong Province, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, PR China; Pediatric Pharmaceutical Engineering Laboratory of Shandong Province, Shandong Dyne Marine Biopharmaceutical Company Limited, Rongcheng, Shandong 264300, PR China; Chemical Immunopharmaceutical Engineering Laboratory of Shandong Province, Shandong Xili Pharmaceutical Company Limited, Heze, Shandong 274300, PR China.
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14
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Zhang S, Fan Q, Moktefi A, Ory V, Audard V, Pawlak A, Ollero M, Sahali D, Henique C. CMIP interacts with WT1 and targets it on the proteasome degradation pathway. Clin Transl Med 2021; 11:e460. [PMID: 34323419 PMCID: PMC8299046 DOI: 10.1002/ctm2.460] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/29/2021] [Accepted: 05/25/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The Wilms tumor 1 suppressor gene, WT1, is expressed throughout life in podocytes and is essential for their function. Downregulation of WT1 has been reported in podocyte diseases but the underlying mechanisms remain unclear. Podocyte injury is the hallmark of idiopathic nephrotic syndrome (INS), the most frequent glomerular disease in children and young adults. An increase in the abundance of Cmaf-inducing protein (CMIP) has been found to alter podocyte function, but it is not known whether CMIP affects WT1 expression. METHODS Transcriptional and post-transcriptional regulation of WT1in the presence of CMIP was studied using transient transfection, mouse models, and siRNA handling. RESULTS We showed that overproduction of CMIP in the podocyte was consistently associated with a downregulation of WT1 according to two mechanisms. We found that CMIP prevented the NF-kB-mediated transcriptional activation of WT1. We demonstrated that CMIP interacts directly with WT1 through its leucine-rich repeat domain. Overexpression of CMIP in the M15 cell line induced a downregulation of WT1, which was prevented by lactacystin, a potent proteasome inhibitor. We showed that CMIP exhibits an E3 ligase activity and targets WT1 to proteasome degradation. Intravenous injection of Cmip-siRNA specifically prevented the repression of Wt1 in lipopolysaccharides-induced proteinuria in mice. CONCLUSIONS These data suggest that CMIP is a repressor of WT1 and might be a critical player in the pathophysiology of some podocyte diseases. Because WT1 is required for podocyte integrity, CMIP could be considered a therapeutic target in podocyte diseases.
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Affiliation(s)
- Shao‐Yu Zhang
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
| | - Qingfeng Fan
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
| | - Anissa Moktefi
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
- AP‐HPGroupe hospitalier Henri Mondor‐Albert ChenevierDépartement de pathologieCreteilFrance
| | - Virginie Ory
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
| | - Vincent Audard
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
- AP‐HPGroupe Henri‐Mondor Albert‐ChenevierService de NéphrologieCreteilFrance
| | - Andre Pawlak
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
| | - Mario Ollero
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
| | - Dil Sahali
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
- AP‐HPGroupe Henri‐Mondor Albert‐ChenevierService de NéphrologieCreteilFrance
| | - Carole Henique
- INSERMCreteilFrance
- Faculté de santéUniversité Paris Est CreteilCreteilFrance
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15
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Kumar R, Massoumi H, Chug MK, Brisbois EJ. S-Nitroso- N-acetyl-l-cysteine Ethyl Ester (SNACET) Catheter Lock Solution to Reduce Catheter-Associated Infections. ACS Appl Mater Interfaces 2021; 13:25813-25824. [PMID: 34029456 PMCID: PMC8735666 DOI: 10.1021/acsami.1c06427] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 05/04/2023]
Abstract
Antimicrobial-lock therapy is an economically viable strategy to prevent/reduce the catheter-related bloodstream infections (CRBSI) that are associated with central venous catheters (CVCs). Herein, we report the synthesis and characterization of the S-nitroso-N-acetyl-l-cysteine ethyl ester (SNACET), a nitric oxide (NO)-releasing molecule, and for the first time its application as a catheter lock solution to combat issues of bacterial infection associated with indwelling catheters. Nitric oxide is an endogenous gasotransmitter that exhibits a wide range of biological properties, including broad-spectrum antimicrobial activity. The storage stability of the SNACET and the NO release behavior of the prepared lock solution were analyzed. SNACET lock solutions with varying concentrations exhibited tuneable NO release at physiological levels for >18 h, as measured using chemiluminescence. The SNACET lock solutions were examined for their efficacy in reducing microbial adhesion after 18 h of exposure toStaphylococcus aureus (Gram-positive bacteria) andEscherichia coli (Gram-negative bacteria). SNACET lock solutions with 50 and 75 mM concentrations were found to reduce >99% (ca. 3-log) of the adhered S. aureus and E. coli adhesion to the catheter surface after 18 h. The SNACET lock solutions were evaluated in a more challenging in vitro model to evaluate the efficacy against an established microbial infection on catheter surfaces using the same bacteria strains. A >90% reduction in viable bacteria on the catheter surfaces was observed after instilling the 75 mM SNACET lock solution within the lumen of the infected catheter for only 2 h. These findings propound that SNACET lock solution is a promising biocidal agent and demonstrate the initiation of a new platform technology for NO-releasing lock solution therapy for the inhibition and treatment of catheter-related infections.
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Affiliation(s)
- Rajnish Kumar
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Hamed Massoumi
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Manjyot Kaur Chug
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Elizabeth J Brisbois
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
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16
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Kindilien S, Goldberg E. Household tobacco smoke exposure and acrylonitrile metabolite levels in a US pediatric sample. Environ Toxicol Pharmacol 2021; 84:103616. [PMID: 33609751 DOI: 10.1016/j.etap.2021.103616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
This study seeks to determine if members of a pediatric (<18 years) sample who have high levels of the urinary volatile organic compound (VOC) metabolite of acrylonitrile, N-Acetyl-S-(2-cyanoethyl)-l-cysteine (CYMA), are significantly more likely to be living in a household with indoor tobacco smoke exposure. A weighted logistic regression was used to compare pediatric participants in the highest quartile of CYMA levels (≥ 4.56 ng/mL) with those whose CYMA levels were not in the highest quartile. 411 pediatric participants were identified in the NHANES data for analysis. Those in the highest quartile of recorded CYMA values were more likely to be living with active indoor smokers (69.35 %) than those who were not in the highest quartile (32.72 %). Having one indoor smoker (adjusted-OR: 2.53, 95 % CI: 1.01-6.34) or 2+ indoor smokers (adjusted-OR: 4.25, 95 % CI: 1.84-9.81) were both associated with a pediatric participant having a CYMA value in the highest quartile.
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Affiliation(s)
- Shannon Kindilien
- College of Pharmacy, University of New Mexico, 2502 Marble Ave, Albuquerque, NM, 87106, United States.
| | - Elle Goldberg
- Quality Outcomes, Outcomes Research Team, The University of New Mexico Hospital, 933 Bradbury Dr SE, Albuquerque, NM, 87106, United States.
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Tosi GM, Giustarini D, Franci L, Minetti A, Imperatore F, Caldi E, Fiorenzani P, Aloisi AM, Sparatore A, Rossi R, Chiariello M, Orlandini M, Galvagni F. Superior Properties of N-Acetylcysteine Ethyl Ester over N-Acetyl Cysteine to Prevent Retinal Pigment Epithelial Cells Oxidative Damage. Int J Mol Sci 2021; 22:E600. [PMID: 33435325 PMCID: PMC7827200 DOI: 10.3390/ijms22020600] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/28/2020] [Accepted: 01/06/2021] [Indexed: 12/20/2022] Open
Abstract
Oxidative stress plays a key role in the pathophysiology of retinal diseases, including age-related macular degeneration (AMD) and diabetic retinopathy, which are the major causes of irreversible blindness in developed countries. An excess of reactive oxygen species (ROS) can directly cause functional and morphological impairments in retinal pigment epithelium (RPE), endothelial cells, and retinal ganglion cells. Antioxidants may represent a preventive/therapeutic strategy and reduce the risk of progression of AMD. Among antioxidants, N-acetyl-L-cysteine (NAC) is widely studied and has been proposed to have therapeutic benefit in treating AMD by mitigating oxidative damage in RPE. Here, we demonstrate that N-acetyl-L-cysteine ethyl ester (NACET), a lipophilic cell-permeable cysteine derivative, increases the viability in oxidative stressed RPE cells more efficiently than NAC by reacting directly and more rapidly with oxidizing agents, and that NACET, but not NAC, pretreatment predisposes RPE cells to oxidative stress resistance and increases the intracellular reduced glutathione (GSH) pool available to act as natural antioxidant defense. Moreover, we demonstrate the ability of NACET to increase GSH levels in rats' eyes after oral administration. In conclusion, even if experiments in AMD animal models are still needed, our data suggest that NACET may play an important role in preventing and treating retinal diseases associated with oxidative stress, and may represent a valid and more efficient alternative to NAC in therapeutic protocols in which NAC has already shown promising results.
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Affiliation(s)
- Gian Marco Tosi
- Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy;
| | - Daniela Giustarini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (D.G.); (A.M.); (E.C.); (R.R.)
| | - Lorenzo Franci
- Core Research Laboratory, Istituto per lo Studio, la Prevenzione e la Rete Oncologica (ISPRO), 53100 Siena, Italy; (L.F.); (F.I.); (M.C.)
- Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche, 53100 Siena, Italy
| | - Alberto Minetti
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (D.G.); (A.M.); (E.C.); (R.R.)
| | - Francesco Imperatore
- Core Research Laboratory, Istituto per lo Studio, la Prevenzione e la Rete Oncologica (ISPRO), 53100 Siena, Italy; (L.F.); (F.I.); (M.C.)
- Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche, 53100 Siena, Italy
| | - Elena Caldi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (D.G.); (A.M.); (E.C.); (R.R.)
| | - Paolo Fiorenzani
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (P.F.); (A.M.A.)
| | - Anna Maria Aloisi
- Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (P.F.); (A.M.A.)
| | - Anna Sparatore
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy;
| | - Ranieri Rossi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (D.G.); (A.M.); (E.C.); (R.R.)
| | - Mario Chiariello
- Core Research Laboratory, Istituto per lo Studio, la Prevenzione e la Rete Oncologica (ISPRO), 53100 Siena, Italy; (L.F.); (F.I.); (M.C.)
- Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche, 53100 Siena, Italy
| | - Maurizio Orlandini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (D.G.); (A.M.); (E.C.); (R.R.)
| | - Federico Galvagni
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy; (D.G.); (A.M.); (E.C.); (R.R.)
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18
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Linhart I, Hanzlíková I, Mráz J, Dušková Š, Tvrdíková M, Vachová H. Novel aminoarylcysteine adducts in globin of rats dosed with naphthylamine and nitronaphthalene isomers. Arch Toxicol 2021; 95:79-89. [PMID: 33156369 DOI: 10.1007/s00204-020-02907-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 09/10/2020] [Indexed: 11/28/2022]
Abstract
Novel aminonaphthylcysteine (ANC) adducts, formed via naphthylnitrenium ions and/or their metabolic precursors in the biotransformation of naphthylamines (NA) and nitronaphthalenes (NN), were identified and quantified in globin of rats dosed intraperitoneally with 0.16 mmol/kg b.w. of 1-NA, 1-NN, 2-NA and 2-NN. Using HPLC-ESI-MS2 analysis of the globin hydrolysates, S-(1-amino-2-naphthyl)cysteine (1A2NC) together with S-(4-amino-1-naphthyl)cysteine (4A1NC) were found in rats given 1-NA or 1-NN, and S-(2-amino-1-naphthyl)cysteine (2A1NC) in those given 2-NA or 2-NN. The highest level of ANC was produced by the most mutagenic and carcinogenic isomer 2-NA (35.8 ± 5.4 nmol/g globin). The ratio of ANC adduct levels for 1-NA, 1-NN, 2-NA and 2-NN was 1:2:100:3, respectively. Notably, the ratio of 1A2NC:4A1NC in globin of rats dosed with 1-NA and 1-NN differed significantly (2:98 versus 16:84 respectively), indicating differences in mechanism of the adduct formation. Moreover, aminonaphthylmercapturic acids, formed via conjugation of naphthylnitrenium ions and/or their metabolic precursors with glutathione, were identified in the rat urine. Their amounts excreted after dosing rats with 1-NA, 1-NN, 2-NA and 2-NN were in the ratio 1:100:40:2, respectively. For all four compounds tested, haemoglobin binding index for ANC was several-fold higher than that for the sulphinamide adducts, generated via nitrosoarene metabolites. Due to involvement of electrophilic intermediates in their formation, ANC adducts in globin may become toxicologically more relevant biomarkers of cumulative exposure to carcinogenic or non-carcinogenic arylamines and nitroarenes than the currently used sulphinamide adducts.
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Affiliation(s)
- Igor Linhart
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic.
| | - Iveta Hanzlíková
- National Institute of Public Health, Prague, Šrobárova 48, 100 42, Prague, Czech Republic
| | - Jaroslav Mráz
- National Institute of Public Health, Prague, Šrobárova 48, 100 42, Prague, Czech Republic
| | - Šárka Dušková
- National Institute of Public Health, Prague, Šrobárova 48, 100 42, Prague, Czech Republic
| | - Monika Tvrdíková
- National Institute of Public Health, Prague, Šrobárova 48, 100 42, Prague, Czech Republic
| | - Hana Vachová
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic
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Wang J, Guo X, Chen Y, Zhang W, Ren J, Gao A. Association between benzene exposure, serum levels of cytokines and hematological measures in Chinese workers: A cross-sectional study. Ecotoxicol Environ Saf 2021; 207:111562. [PMID: 33254416 DOI: 10.1016/j.ecoenv.2020.111562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/17/2020] [Accepted: 10/22/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Low benzene exposure leads to hematotoxicity, but we still lack sensitive early monitoring and early warning markers. Benzene is associated with inflammation, which is mainly mediated by cytokines network. However, until now few studies have conducted high-throughput detection of multi-cytokines to get a global view of cytokine changes and screen for markers of benzene-induced toxicity. We hypothesized that cytokine profiles mediate benzene-induced hematotoxicity. METHODS 228 subjects consisting of 114 low benzene exposed workers and 114 healthy controls were recruited at Research Center of Occupational Medicine, Peking University Third Hospital, Beijing. The serum concentrations of 27 cytokines were detected by cytokinomics array, urinary benzene series metabolites were measured by UPLC-MS/MS, and peripheral blood cell counts were observed by basic blood test. RESULTS Among 27 cytokines, IL-9 and MIP1-α were significantly lower, but IL-4, IL-10, IL-15, MCP-1, TNF-α and VEGF were significantly higher in benzene exposure group than controls. Urinary benzene metabolite S-phenylmercapturic acid (S-PMA) was significantly higher in benzene exposure group and had a negative linear relationship with WBC count. S-PMA was only significantly associated with IL-9, meanwhile IL-9, IL-15 and VEGF had a positive linear relationship with WBC count. The bootstrapping mediation models showed that the effect of S-PMA on WBC count was partially explained by IL-9 for 10.11%. CONCLUSION This study suggests that exposure to benzene was associated with alternation of blood cell count and cytokine profiles in workers exposed to low levels of benzene, especially decreases of WBC count and IL-9. We also found IL-9 partially mediated the effect of low benzene exposure on WBC count, which may be a potential and promising early monitoring and early warning marker of benzene hematotoxicity.
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Affiliation(s)
- Jingyu Wang
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Xiaoli Guo
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Yujiao Chen
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Wei Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Jing Ren
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Ai Gao
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China.
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20
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He R, Zheng W, Ginman T, Ottosson H, Norgren S, Zhao Y, Hassan M. Pharmacokinetic profile of N-acetylcysteine amide and its main metabolite in mice using new analytical method. Eur J Pharm Sci 2019; 143:105158. [PMID: 31740394 DOI: 10.1016/j.ejps.2019.105158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/03/2019] [Accepted: 11/15/2019] [Indexed: 02/06/2023]
Abstract
N-acetylcysteine amide (NACA) is the amide derivative of N-acetylcysteine (NAC) that is rapidly converted to NAC after systemic administration. It has emerged as a promising thiol antioxidant for multiple indications; however, the pharmacokinetic property is yet unclear due to lack of an accurate quantification method. The present investigation aimed to develop an analytical method for simultaneous quantification of NACA and NAC in plasma. A new reagent (2-(methylsulfonyl)-5-phenyl-1,3,4-oxadiazole, MPOZ) was introduced for thiol stabilization during sample processing and storage. Further, we utilized tris (2-carboxyethyl) phosphine (TCEP) to reduce the oxidized forms of NACA and NAC. After derivatization, NACA-MPOZ and NAC-MPOZ were quantified using liquid chromatography-mass spectrometry (LC-MS). The new method was validated and found to have high specificity, linearity, accuracy, precision, and recovery for the quantification of NACA and NAC in plasma. Furthermore, the formed derivatives of NACA and NAC were stable for 48 h under different conditions. The method was utilized in pharmacokinetic study which showed that the bioavailability of NACA is significantly higher than NAC (67% and 15%, respectively). The pharmacokinetic of NACA obeyed a two-compartment open model. The glutathione (GSH)-replenishing capacity was found to be three to four-fold higher after the administration of NACA compared to that observed after the administration of NAC. In conclusion, the present method is simple, robust and reproducible, and can be utilized in both experimental and clinical studies. NACA might be considered as a prodrug for NAC. Furthermore, this is the first report describing the pharmacokinetics and bioavailability of NACA in mouse.
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Affiliation(s)
- Rui He
- Experimental Cancer Medicine, Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden; Clinical Research Center, Karolinska University Hospital, Huddinge, 14186 Stockholm, Sweden
| | - Wenyi Zheng
- Experimental Cancer Medicine, Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden; Clinical Research Center, Karolinska University Hospital, Huddinge, 14186 Stockholm, Sweden
| | - Tobias Ginman
- Sprint Bioscience, Huddinge, 14186 Stockholm, Sweden
| | - Håkan Ottosson
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden
| | - Svante Norgren
- Children´s and Women´s Health Theme, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Ying Zhao
- Experimental Cancer Medicine, Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden; Clinical Research Center, Karolinska University Hospital, Huddinge, 14186 Stockholm, Sweden
| | - Moustapha Hassan
- Experimental Cancer Medicine, Clinical Research Center, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden; Clinical Research Center, Karolinska University Hospital, Huddinge, 14186 Stockholm, Sweden.
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21
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Bonet-Costa V, Sun PY, Davies KJA. Measuring redox effects on the activities of intracellular proteases such as the 20S Proteasome and the Immuno-Proteasome with fluorogenic peptides. Free Radic Biol Med 2019; 143:16-24. [PMID: 31351175 PMCID: PMC6848766 DOI: 10.1016/j.freeradbiomed.2019.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/18/2019] [Accepted: 07/19/2019] [Indexed: 01/08/2023]
Abstract
Proteolytic enzymes are often strongly affected by redox reactions, free radicals, oxidation, or oxidative stress. The 20S Proteasome and the Immuno-Proteasome are examples of major intracellular proteases whose concentration, transcription, translation, and proteolytic activity are all subject to redox regulation. Proteasomes are essential in maintaining overall protein homeostasis (or proteostasis), and their dysregulation results in detrimental phenotypes associated with various pathologies, including several common age-related diseases. Many studies have used Western blots to assess redox changes in Proteasome protein levels or RT-PCR to study RNA transcript levels, but actual measurements of proteolytic activity are far less common. Since each intact protein substrate exhibits a different proteolytic profile when incubated with proteasome or Immuno-Proteasome [± activators such as 19S or 11S (also called PA28)] and these proteolytic profiles are drastically altered if the protein substrate is denatured, for example by oxidation, heat, acetylation, or methylation. In an attempt to standardize proteasomal activity measurements small fluorogenic protein/peptide substrates were developed to test the three proteolytically active sites of the Proteasome and Immuno-Proteasome: trypsin-like, chymotrypsin-like, and caspase-like activities. Despite extensive use of fluorogenic peptide substrates to measure proteasome activity, there is an absence of a standardized set of best practices. In this study we analyze different parameters, such as sample concentration, AMC conjugated substrate concentration, duration of assay, and frequency of measurements, and examine how they impact the determination of Proteasome and Immuno-Proteasome activities using fluorogenic peptide substrates.
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Affiliation(s)
- Vicent Bonet-Costa
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, USA
| | - Patrick Y Sun
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, USA; Division of Molecular & Computational Biology, Department of Biological Sciences, Dornsife College of Letters, Arts & Sciences, USA
| | - Kelvin J A Davies
- Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center, USA; Division of Molecular & Computational Biology, Department of Biological Sciences, Dornsife College of Letters, Arts & Sciences, USA; Department of Biochemistry & Molecular Medicine, Keck School of Medicine of USC: All at the University of Southern California, Los Angeles, CA, 90089, USA.
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22
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Kanner J, Shpaizer A, Nelgas L, Tirosh O. S-Nitroso- N-acetylcysteine (NAC-SNO) as an Antioxidant in Cured Meat and Stomach Medium. J Agric Food Chem 2019; 67:10930-10936. [PMID: 31496247 DOI: 10.1021/acs.jafc.9b03741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 06/10/2023]
Abstract
The stability of lipids in meat products depends on the initial concentration of hydroperoxides, the catalytic involvement of metal ions and myoglobin, endogenous antioxidants, and biological and technological factors. Ground meat was treated with additives, sealed in vacuum bags, heated to 75 °C, and stored opened to air at 4 °C. S-Nitroso-N-acetylcysteine (NAC-SNO) at concentration like nitrite used by the industry prevents lipid peroxidation in the product, even after storage for 1 month at 4 °C. The same simulated treatments at different concentrations of both compounds show that NAC-SNO acts as an antioxidant ∼4-fold better than nitrite at pH 6.2 or 3.0. Ascorbic acid significantly improves nitrite antioxidant effect. NAC-SNO was found to prevent, much better than nitrite, accumulation of reactive aldehydes and hydroxynonenal protein modification. In condition like those used by the industry for meat products processing, NAC-SNO acts better than nitrite to provide antioxidant protection without the side effect of N-nitrosation, oxidation, and the loss of nutrient generated by nitrite.
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Affiliation(s)
- Joseph Kanner
- Department of Food Science , ARO Volcani Center , Bet Dagan 50250 , Israel
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture Food and Environment , The Hebrew University of Jerusalem , Rehovot 76100 , Israel
| | - Adi Shpaizer
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture Food and Environment , The Hebrew University of Jerusalem , Rehovot 76100 , Israel
| | - Liron Nelgas
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture Food and Environment , The Hebrew University of Jerusalem , Rehovot 76100 , Israel
| | - Oren Tirosh
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture Food and Environment , The Hebrew University of Jerusalem , Rehovot 76100 , Israel
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23
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Jia W, Wu D, Chen X, Mao L, Miao H, Chen D, Ren Y, Zhang Y. Metabolomics-based biomarker analysis of dihydroxypropyl mercapturic acid isomers from 3-monochloropropane-1,2-diol and glycidol for evaluation of toxicokinetics in rats and daily internal exposure in humans. Talanta 2019; 204:329-336. [PMID: 31357301 DOI: 10.1016/j.talanta.2019.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 03/15/2019] [Revised: 05/22/2019] [Accepted: 06/03/2019] [Indexed: 11/18/2022]
Abstract
3-Monochloropropane-1,2-diol (3-MCPD), glycidol, and their esters are some major sources of risk factors during food processing. Here we showed the biomarker analysis of 2,3-dihydroxypropyl mercapturic acid (DHPMA) isomers which derived from the metabolism of 3-MCPD, glycidol, and their esters in urine of rats and humans. Iso-DHPMA, a novel urinary metabolite, was discovered and detected in urine of rats, which were orally administered with glycidol but not 3-MCPD. Using the quadrupole-orbitrap high-resolution mass spectrometry, we confirmed that iso-DHPMA appeared a specific biomarker which derived from glycidol. The limit of quantification (signal-to-noise ratio, 10:1) of the analytes in urine of rats and humans were 1.33 ng/mL and 1.56 ng/mL, respectively. Acceptable within-laboratory reproducibility (RSD<9.0%) and spiking recovery (94.7%-100.1%) substantially supported the use of current method for robust biomarker analysis, which was successfully applied to the toxicokinetic study of DHPMA in rats and short-term internal exposure to 3-MCPD and glycidol in humans.
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Affiliation(s)
- Wei Jia
- Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Di Wu
- Yangtze Delta Region Institute of Tsinghua University, Jiaxing, 314006, Zhejiang, China
| | - Xinyu Chen
- Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Lei Mao
- Department of Nutrition, School of Public Health, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, China
| | - Hong Miao
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Dawei Chen
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Yiping Ren
- Yangtze Delta Region Institute of Tsinghua University, Jiaxing, 314006, Zhejiang, China
| | - Yu Zhang
- Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China.
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24
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Johnson JM, Naeher LP, Yu X, Sosnoff C, Wang L, Rathbun SL, De Jesús VR, Xia B, Holder C, Muilenburg JL, Wang JS. A biomonitoring assessment of secondhand exposures to electronic cigarette emissions. Int J Hyg Environ Health 2019; 222:816-823. [PMID: 31085112 PMCID: PMC6938228 DOI: 10.1016/j.ijheh.2019.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/26/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND Electronic cigarette (e-cigarette) conventions regularly bring together thousands of users around the world. In these environments, secondhand exposures to high concentrations of e-cigarette emissions are prevalent. Some biomarkers for tobacco smoke exposure may be used to characterize secondhand e-cigarette exposures in such an environment. METHODS Participants who did not use any tobacco product attended four separate e-cigarette events for approximately six hours. Urine and saliva samples were collected from participants prior to the event, immediately after the event, 4-h after the event, and the next morning (first void). Urine samples from 34 participants were analyzed for cotinine, trans-3'-hydroxycotinine, S-(3-hydroxypropyl)-N-acetylcysteine (3-HPMA), S-carboxyethyl-N-acetylcysteine (CEMA), select tobacco-specific nitrosamines (TSNAs), and 8-isoprostane. Saliva samples were analyzed for cotinine and trans-3'-hydroxycotinine. RESULTS Data from 28 of 34 participants were used in the data analysis. Creatinine-adjusted urinary cotinine concentrations increased up to 13-fold and peaked 4-h after completed exposure (range of adjusted geometric means [AGMs] = 0.352-2.31 μg/g creatinine). Salivary cotinine concentrations were also the highest 4-h after completed exposure (range of AGMs = 0.0373-0.167 ng/mL). Salivary cotinine and creatinine-corrected concentrations of urinary cotinine, trans-3'-hydroxycotinine, CEMA, and 3-HPMA varied significantly across sampling times. Urinary and salivary cotinine, urinary trans-3'-hydroxycotinine, and urinary 3-HPMA concentrations also varied significantly across events. CONCLUSION Secondhand e-cigarette exposures lasting six hours resulted in significant changes in exposure biomarker concentrations of both nicotine and acrolein but did not change exposure to tobacco-specific nitrosamines. Additional research is needed to understand the relationship between biomarker concentrations and environmental concentrations of toxicants in e-cigarette emissions.
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Affiliation(s)
- Jona M Johnson
- Environmental Health Science Department, College of Public Health, University of Georgia, 206 Environmental Health Science Building, Athens, GA, 30602, USA.
| | - Luke P Naeher
- Environmental Health Science Department, College of Public Health, University of Georgia, 206 Environmental Health Science Building, Athens, GA, 30602, USA
| | - Xiaozhong Yu
- Environmental Health Science Department, College of Public Health, University of Georgia, 206 Environmental Health Science Building, Athens, GA, 30602, USA
| | - Connie Sosnoff
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, 30341, USA
| | - Lanqing Wang
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, 30341, USA
| | - Stephen L Rathbun
- Epidemiology and Biostatistics Department, College of Public Health, University of Georgia, 206 Miller Hall, Health Sciences Campus, Athens, GA, 30602, USA
| | - Víctor R De Jesús
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, 30341, USA
| | - Baoyun Xia
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, 30341, USA
| | - Cory Holder
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, 30341, USA; Oak Ridge Institute for Science and Education, Oak Ridge, TN, 37831, USA
| | - Jessica L Muilenburg
- Health Promotion and Behavior Department, College of Public Health, University of Georgia, 233 Wright Hall, Health Sciences Campus, Athens, GA, 30602, USA
| | - Jia-Sheng Wang
- Environmental Health Science Department, College of Public Health, University of Georgia, 206 Environmental Health Science Building, Athens, GA, 30602, USA.
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25
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Llamas-González YY, Campos D, Pascale JM, Arbiza J, González-Santamaría J. A Functional Ubiquitin-Proteasome System is Required for Efficient Replication of New World Mayaro and Una Alphaviruses. Viruses 2019; 11:v11040370. [PMID: 31018496 PMCID: PMC6520948 DOI: 10.3390/v11040370] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 03/26/2019] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 12/20/2022] Open
Abstract
Mayaro (MAYV) and Una (UNAV) are emerging arboviruses belonging to the Alphavirus genus of the Togaviridae family. These viruses can produce febrile disease with symptoms such as fever, headache, myalgia, skin rash and incapacitating poly-arthralgia. Serological studies indicate that both viruses are circulating in different countries in Latin America. Viruses need the host cell machinery and resources to replicate effectively. One strategy to find new antivirals consists of identifying key cellular pathways or factors that are essential for virus replication. In this study, we analyzed the role of the ubiquitin-proteasome system (UPS) in MAYV and UNAV replication. Vero-E6 or HeLa cells were treated with the proteasome inhibitors MG132 or Lactacystin, and viral progeny production was quantified using a plaque assay method. In addition, the synthesis of viral proteins was analyzed by Western blot and confocal microscopy. Our results indicate that treatment with proteasome inhibitors decreases MAYV and UNAV protein synthesis, and also causes a significant dose-dependent decrease in MAYV and UNAV replication. Proteasome activity seems to be important at the early stages of MAYV replication. These findings suggest that the ubiquitin-proteasome system is a possible pharmacological target to inhibit these neglected alphaviruses.
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Affiliation(s)
- Yessica Y Llamas-González
- Grupo de Biología Celular y Molecular de Arbovirus, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá 0816-02593, Panama.
- Programa de Doctorado en Ciencias Biologicas, Universidad de la República, Montevideo 11200, Uruguay.
| | - Dalkiria Campos
- Grupo de Biología Celular y Molecular de Arbovirus, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá 0816-02593, Panama.
| | - Juan M Pascale
- Dirección de Investigación y Desarrollo Tecnológico, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá 0816-02593, Panama.
- Escuela de Medicina, Universidad de Panamá, Panamá, Panama.
| | - Juan Arbiza
- Seccción de Virología, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay.
| | - José González-Santamaría
- Grupo de Biología Celular y Molecular de Arbovirus, Instituto Conmemorativo Gorgas de Estudios de la Salud, Panamá 0816-02593, Panama.
- Dirección de Investigación, Universidad Interamericana de Panamá, Panamá 9865, Panama.
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de Souza GFP, Denadai JP, Picheth GF, de Oliveira MG. Long-term decomposition of aqueous S-nitrosoglutathione and S-nitroso-N-acetylcysteine: Influence of concentration, temperature, pH and light. Nitric Oxide 2019; 84:30-37. [PMID: 30630056 DOI: 10.1016/j.niox.2019.01.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 11/17/2018] [Accepted: 01/04/2019] [Indexed: 02/03/2023]
Abstract
Primary S-nitrosothiols (RSNOs) have received significant attention for their ability to modulate NO signaling in many physiological and pathophysiological processes. Such actions and their potential pharmaceutical uses demand a better knowledge of their stability in aqueous solutions. Herein, we investigated the effects of concentration, temperature, pH, room light and metal ions on the long-term kinetic behavior of two representative primary RSNOs, S-nitrosoglutathione (GSNO) and S-nitroso-N-acetylcysteine (SNAC). The thermal decomposition of GSNO and SNAC were shown to be affected by the auto-catalytic action of the thiyl radicals. At 25 °C in the dark and protected from the catalytic action of metal ions, GSNO and SNAC solutions 1 mM showed half-lives of 49 and 76 days, and apparent activation energies of 84 ± 14 and 90 ± 6 kJ mol-1, respectively. Both GSNO and SNAC exhibited increased stability in the pH range 5-7. At high pH the decomposition pathway of GSNO involves the formation of an intermediate (GS-NO22-), which decomposes generating GSH and nitrite. GSNO solutions displayed lower sensitivity to the catalytic action of metal ions than SNAC and the exposure to room light led to a 5-fold increase in the initial rates of decomposition of both RSNOs. In all comparisons, SNAC solutions showed higher stability than GSNO solutions. These findings provide strategic information about the stability of GSNO and SNAC and may open new perspectives for their use as experimental or therapeutic NO donors.
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Affiliation(s)
| | | | - Guilherme F Picheth
- Institute of Chemistry, University of Campinas, UNICAMP, Campinas, SP, Brazil
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Chen M, Carmella SG, Sipe C, Jensen J, Luo X, Le CT, Murphy SE, Benowitz NL, McClernon FJ, Vandrey R, Allen SS, Denlinger-Apte R, Cinciripini PM, Strasser AA, al’Absi M, Robinson JD, Donny EC, Hatsukami D, Hecht SS. Longitudinal stability in cigarette smokers of urinary biomarkers of exposure to the toxicants acrylonitrile and acrolein. PLoS One 2019; 14:e0210104. [PMID: 30608961 PMCID: PMC6319718 DOI: 10.1371/journal.pone.0210104] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 12/17/2018] [Indexed: 01/07/2023] Open
Abstract
The urinary metabolites cyanoethyl mercapturic acid (CEMA) and 3-hydroxypropyl mercapturic acid (3-HPMA) have been widely used as biomarkers of exposure to acrylonitrile and acrolein, respectively, but there are no published data on their consistency over time in the urine of cigarette smokers. We provided, free of charge over a 20 week period, Spectrum NRC600/601 research cigarettes to cigarette smokers in the control arm of a randomized clinical trial of the reduced nicotine cigarette. Urine samples were collected at weeks 4, 8, 12, 16, and 20 and analyzed for CEMA and 3-HPMA, and total nicotine equivalents (TNE) using validated methods. Creatinine-corrected intra-class correlation coefficients for CEMA, 3-HPMA, and TNE were 0.67, 0.46, and 0.68, respectively, indicating good longitudinal consistency for CEMA, while that of 3-HPMA was fair. A strong correlation between CEMA and TNE values was observed. These data support the use of CEMA as a reliable biomarker of tobacco smoke exposure. This is the first report of the longitudinal stability of the biomarkers of acrylonitrile and acrolein exposure in smokers. The data indicate that CEMA, the biomarker of acrylonitrile exposure, is consistent over time in cigarette smokers, supporting its use. While 3-HPMA levels were less stable over time, this biomarker is nevertheless a useful monitor of human acrolein exposure because of its specificity to this toxicant.
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Affiliation(s)
- Menglan Chen
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Steven G. Carmella
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Chistopher Sipe
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Joni Jensen
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Xianghua Luo
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Chap T. Le
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Sharon E. Murphy
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Neal L. Benowitz
- Department of Medicine, University of California, San Francisco, California, United States of America
| | - F. Joseph McClernon
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina, United States of America
| | - Ryan Vandrey
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Sharon S. Allen
- Department of Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Rachel Denlinger-Apte
- Department of Behavioral and Social Sciences, Brown University, Providence, Rhode Island, United States of America
| | - Paul M. Cinciripini
- Department of Behavioral Science, University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Andrew A. Strasser
- Department of Psychiatry, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Mustafa al’Absi
- Behavioral Medicine Laboratories, University of Minnesota Medical School, Duluth, Minnesota, United States of America
| | - Jason D. Robinson
- Department of Behavioral Science, University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Eric C. Donny
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Dorothy Hatsukami
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Stephen S. Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
- * E-mail:
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Li X, Wu J, Zhang X, Chen W. Glutathione reductase-mediated thiol oxidative stress suppresses metastasis of murine melanoma cells. Free Radic Biol Med 2018; 129:256-267. [PMID: 30086340 DOI: 10.1016/j.freeradbiomed.2018.07.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/30/2018] [Accepted: 07/31/2018] [Indexed: 02/06/2023]
Abstract
Malignant melanoma is a highly metastatic and life-threatening cancer. Reactive oxygen species (ROS) play important roles in cancer initiation and progression including metastasis. It has been reported that the oxidative stress spontaneously generated in circulating melanoma cells was able to suppress distant metastasis in vivo. However, little is known regarding the effects and mechanism of glutathione reductase (GR) inhibition-induced oxidative stress in regulation of melanoma metastasis. Here, we demonstrate that GR inhibition generates oxidative stress and suppresses lung metastasis and subcutaneous growth of melanoma in vivo. In addition, inhibitory effects by GR activity reduction were observed on cell proliferation, colony formation, cell adhesion, migration and invasion in melanoma cells in vitro. GR inhibition-induced oxidative stress was also found to block epithelial-to-mesenchymal transition (EMT) by decreasing the expression of Vimentin, ERK1/2, transcription factor Snail and increasing the expression of E-cadherin. In addition, actin rearrangement, a key element involved in cell motility, was also affected by GR-mediated oxidative stress possibly through protein S-glutathionylation on actin. In conclusion, this study identifies GR as an effective regulator of oxidative stress that affects the multistep processes of metastasis in melanoma cells, and it becomes a potential target for melanoma therapy.
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Affiliation(s)
- Xia Li
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province 310022, China; Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province 310022, China
| | - Junzhou Wu
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province 310022, China
| | - Xiaoying Zhang
- ACEA Bio CO., Ltd., Hangzhou, Zhejiang Province 310030, China
| | - Wei Chen
- Zhejiang Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province 310022, China; Zhejiang Key Laboratory of Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province 310022, China.
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Shpaizer A, Nussinovich A, Kanner J, Tirosh O. S-Nitroso-N-acetylcysteine Generates Less Carcinogenic N-Nitrosamines in Meat Products than Nitrite. J Agric Food Chem 2018; 66:11459-11467. [PMID: 30281301 DOI: 10.1021/acs.jafc.8b04549] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 06/08/2023]
Abstract
Nitrite reacts with secondary amines to form N-nitrosamines (N-NA), which lead to gastrointestinal cancers. The aim of this study was to compare nitrite with S-nitrosocysteine (Cys-SNO) and S-nitroso-N-acetylcysteine (NAC-SNO) with respect to N-NA formation, which was evaluated by determining the conversion of N-methylaniline to N-nitrosomethylaniline. Under neutral and acidic pH conditions, N-NA formation rate was nitrite > Cys-SNO > NAC-SNO. In the presence of copper or nucleophiles, NAC-SNO generated much less N-NA than Cys-SNO. Nitrite and Cys-SNO produced higher amounts of N-NA in the presence of oxygen, whereas NAC-SNO was almost oxygen insensitive. In meat in the stomach medium, NAC-SNO produced much lower amounts of N-NA than other additives. In heated meat, Cys-SNO and NAC-SNO generated the nitrosyl-hemochrome pink pigment, better than nitrite. In conclusion, NAC-SNO was much less reactive for N-NA formation than nitrite and Cys-SNO in conditions relevant to meat production and stomach digestion.
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Affiliation(s)
- Adi Shpaizer
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture, Food and Environment , The Hebrew University of Jerusalem , Rehovot 7610001 , Israel
| | - Amos Nussinovich
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture, Food and Environment , The Hebrew University of Jerusalem , Rehovot 7610001 , Israel
| | - Joseph Kanner
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture, Food and Environment , The Hebrew University of Jerusalem , Rehovot 7610001 , Israel
| | - Oren Tirosh
- Institute of Biochemistry, Food Science and Nutrition, Faculty of Agriculture, Food and Environment , The Hebrew University of Jerusalem , Rehovot 7610001 , Israel
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Wang XF, Song SD, Li YJ, Hu ZQ, Zhang ZW, Yan CG, Li ZG, Tang HF. Protective Effect of Quercetin in LPS-Induced Murine Acute Lung Injury Mediated by cAMP-Epac Pathway. Inflammation 2018; 41:1093-1103. [PMID: 29569077 DOI: 10.1007/s10753-018-0761-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Quercetin (Que) as an abundant flavonol element possesses potent antioxidative properties and has protective effect in lipopolysaccharide (LPS)-induced acute lung injury (ALI), but the specific mechanism is still unclear, so we investigated the effect of Que from in vivo and in vitro studies and the related mechanism of cAMP-PKA/Epac pathway. The results in mice suggested that Que can inhibit the release of inflammatory cytokine, block neutrophil recruitment, and decrease the albumin leakage in dose-dependent manners. At the same time, Que can increase the cAMP content of lung tissue, and Epac content, except PKA. The results in epithelial cell (MLE-12) suggested that Que also can inhibit the inflammatory mediators keratinocyte-derived chemokines release after LPS stimulation; Epac inhibitor ESI-09 functionally antagonizes the inhibitory effect of Que; meanwhile, PKA inhibitor H89 functionally enhances the inhibitory effect of Que. Overexpression of Epac1 in MLE-12 suggested that Epac1 enhance the effect of Que. All those results suggested that the protective effect of quercetin in ALI is involved in cAMP-Epac pathway.
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Affiliation(s)
- Xue-Feng Wang
- Second Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, 310005, China
| | - Shun-de Song
- Zhejiang Respiratory Drugs Research Laboratory, School of Basic Medical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ya-Jun Li
- Zhejiang Respiratory Drugs Research Laboratory, School of Basic Medical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zheng Qiang Hu
- Zhejiang Respiratory Drugs Research Laboratory, School of Basic Medical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhe-Wen Zhang
- Zhejiang Respiratory Drugs Research Laboratory, School of Basic Medical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chun-Guang Yan
- Department of Pathogenic Biology and Immunology, Southeast University School of Medicine, Nanjing, 210009, China
| | - Zi-Gang Li
- Department of Anesthesiology, Women's Hospital,School of Medicine, Zhejiang University , Hangzhou, 310006, China
| | - Hui-Fang Tang
- Zhejiang Respiratory Drugs Research Laboratory, School of Basic Medical Sciences, Zhejiang University, Hangzhou, 310058, China.
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Dawkins L, Cox S, Goniewicz M, McRobbie H, Kimber C, Doig M, Kośmider L. 'Real-world' compensatory behaviour with low nicotine concentration e-liquid: subjective effects and nicotine, acrolein and formaldehyde exposure. Addiction 2018; 113:1874-1882. [PMID: 29882257 PMCID: PMC6150437 DOI: 10.1111/add.14271] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 01/09/2018] [Accepted: 05/15/2018] [Indexed: 02/04/2023]
Abstract
AIMS To compare the effects of (i) high versus low nicotine concentration e-liquid, (ii) fixed versus adjustable power and (iii) the interaction between the two on: (a) vaping behaviour, (b) subjective effects, (c) nicotine intake and (d) exposure to acrolein and formaldehyde in e-cigarette users vaping in their everyday setting. DESIGN Counterbalanced, repeated measures with four conditions: (i) low nicotine (6 mg/ml)/fixed power; (ii) low nicotine/adjustable power; (iii) high nicotine (18 mg/ml)/fixed power; and (iv) high nicotine/adjustable power. SETTING London and the South East, England. PARTICIPANTS Twenty experienced e-cigarette users (recruited between September 2016 and February 2017) vaped ad libitum using an eVic Supreme™ with a 'Nautilus Aspire' tank over 4 weeks (1 week per condition). MEASUREMENTS Puffing patterns [daily puff number (PN), puff duration (PD), interpuff interval (IPI)], ml of e-liquid consumed, changes to power (where permitted) and subjective effects (urge to vape, nicotine withdrawal symptoms) were measured in each condition. Nicotine intake was measured via salivary cotinine. 3-Hydroxypropylmercapturic acid (3-HPMA), a metabolite of the toxicant acrolein, and formate, a metabolite of the carcinogen formaldehyde, were measured in urine. FINDINGS There was a significant nicotine concentration × power interaction for PD (P < 0.01). PD was longer with low nicotine/fixed power compared with (i) high nicotine/fixed power (P < 0.001) and (ii) low nicotine/adjustable power (P < 0.01). PN and liquid consumed were higher in the low versus high nicotine condition (main effect of nicotine, P < 0.05). Urge to vape and withdrawal symptoms were lower, and nicotine intake was higher, in the high nicotine condition (main effects of nicotine: P < 0.01). While acrolein levels did not differ, there was a significant nicotine × power interaction for formaldehyde (P < 0.05). CONCLUSIONS Use of a lower nicotine concentration e-liquid may be associated with compensatory behaviour (e.g. higher number and duration of puffs) and increases in negative affect, urge to vape and formaldehyde exposure.
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Affiliation(s)
- Lynne Dawkins
- Centre for Addictive Behaviours Research, School of Applied SciencesLondon South Bank UniversityLondonUK
| | - Sharon Cox
- Centre for Addictive Behaviours Research, School of Applied SciencesLondon South Bank UniversityLondonUK
| | - Maciej Goniewicz
- Department of Health BehaviorRoswell Park Cancer InstituteBuffaloNYUSA
| | - Hayden McRobbie
- Barts and The London School of Medicine and DentistryQueen Mary University of London, Wolfson Institute of Preventive MedicineLondonUK
| | - Catherine Kimber
- School of Psychology, College of Applied Health and CommunitiesUniversity of East LondonLondonUK
| | - Mira Doig
- ABS Laboratories Ltd, BioParkWelwyn Garden CityUK
| | - Leon Kośmider
- Department of Pharmaceutics, School of Pharmacy, affiliated with the Center for the Study of Tobacco ProductsVirginia Commonwealth UniversityRichmondVAUSA
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Hatsukami DK, Luo X, Jensen JA, al'Absi M, Allen SS, Carmella SG, Chen M, Cinciripini PM, Denlinger-Apte R, Drobes DJ, Koopmeiners JS, Lane T, Le CT, Leischow S, Luo K, McClernon FJ, Murphy SE, Paiano V, Robinson JD, Severson H, Sipe C, Strasser AA, Strayer LG, Tang MK, Vandrey R, Hecht SS, Benowitz NL, Donny EC. Effect of Immediate vs Gradual Reduction in Nicotine Content of Cigarettes on Biomarkers of Smoke Exposure: A Randomized Clinical Trial. JAMA 2018; 320:880-891. [PMID: 30193275 PMCID: PMC6372240 DOI: 10.1001/jama.2018.11473] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Importance The optimal temporal approach for reducing nicotine to minimally or nonaddictive levels in all cigarettes sold in the United States has not been determined. Objectives To determine the effects of immediate vs gradual reduction in nicotine content to very low levels and as compared with usual nicotine level cigarettes on biomarkers of toxicant exposure. Design, Setting, and Participants A double-blind, randomized, parallel-design study with 2 weeks of baseline smoking and 20 weeks of intervention was conducted at 10 US sites. A volunteer sample of daily smokers with no intention to quit within 30 days was recruited between July 2014 and September 2016, with the last follow-up completed in March 2017. Interventions (1) Immediate reduction to 0.4 mg of nicotine per gram of tobacco cigarettes; (2) gradual reduction from 15.5 mg to 0.4 mg of nicotine per gram of tobacco cigarettes with 5 monthly dose changes; or (3) maintenance on 15.5 mg of nicotine per gram of tobacco cigarettes. Main Outcomes and Measures Between-group differences in 3 co-primary biomarkers of smoke toxicant exposure: breath carbon monoxide (CO), urine 3-hydroxypropylmercapturic acid (3-HPMA, metabolite of acrolein), and urine phenanthrene tetraol (PheT, indicator of polycyclic aromatic hydrocarbons) calculated as area under the concentration-time curve over the 20 weeks of intervention. Results Among 1250 randomized participants (mean age, 45 years; 549 women [44%]; 958 [77%] completed the trial), significantly lower levels of exposure were observed in the immediate vs gradual reduction group for CO (mean difference, -4.06 parts per million [ppm] [95% CI, -4.89 to -3.23]; P < .0055), 3-HPMA (ratio of geometric means, 0.83 [95% CI, 0.77 to 0.88]; P < .0055), and PheT (ratio of geometric means, 0.88 [95% CI, 0.83 to 0.93]; P < .0055). Significantly lower levels of exposure were observed in the immediate reduction vs control group for CO (mean difference, -3.38 [95% CI, -4.40 to -2.36]; P < .0055), 3-HPMA (ratio of geometric means, 0.81 [95% CI, 0.75 to 0.88]; P < .0055), and PheT (ratio of geometric means, 0.86 [95% CI, 0.81 to 0.92]; P < .0055). No significant differences were observed between the gradual reduction vs control groups for CO (mean difference, 0.68 [95% CI, -0.31 to 1.67]; P = .18), 3-HPMA (ratio of geometric means, 0.98 [95% CI, 0.91 to 1.06]; P = .64), and PheT (ratio of geometric means, 0.98 [95% CI, 0.92 to 1.04]; P = .52). Conclusions and Relevance Among smokers, immediate reduction of nicotine in cigarettes led to significantly greater decreases in biomarkers of smoke exposure across time compared with gradual reduction or a control group, with no significant differences between gradual reduction and control. Trial Registration clinicaltrials.gov Identifier: NCT02139930.
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Affiliation(s)
| | - Xianghua Luo
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Joni A Jensen
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Mustafa al'Absi
- Behavioral Medicine Laboratories, University of Minnesota Medical School, Duluth
| | - Sharon S Allen
- Family Medicine and Community Health, University of Minnesota Medical School, Minneapolis
| | | | - Menglan Chen
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Paul M Cinciripini
- Department of Behavioral Science, University of Texas MD Anderson Cancer Center, Houston
| | - Rachel Denlinger-Apte
- Department of Behavioral and Social Sciences, Brown University, Providence, Rhode Island
| | - David J Drobes
- Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, Florida
| | | | - Tonya Lane
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Chap T Le
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Scott Leischow
- Health Sciences Research, Mayo Clinic, Scottsdale, Arizona
| | - Kai Luo
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - F Joseph McClernon
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina
| | | | - Viviana Paiano
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Jason D Robinson
- Department of Behavioral Science, University of Texas MD Anderson Cancer Center, Houston
| | | | | | | | - Lori G Strayer
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Mei Kuen Tang
- Masonic Cancer Center, University of Minnesota, Minneapolis
| | - Ryan Vandrey
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, Baltimore, Maryland
| | | | - Neal L Benowitz
- Department of Medicine, University of California, San Francisco
| | - Eric C Donny
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Lin CY, Lee HL, Sung FC, Su TC. Investigating the association between urinary levels of acrylonitrile metabolite N-acetyl-S-(2-cyanoethyl)-L-cysteine and the oxidative stress product 8-hydroxydeoxyguanosine in adolescents and young adults. Environ Pollut 2018; 239:493-498. [PMID: 29684876 DOI: 10.1016/j.envpol.2018.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/01/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
Acrylonitrile is a colorless volatile liquid mostly present in tobacco smoke. Acrylonitrile exposure has shown to increase oxidative stress in animal studies; however, there was no previous research in human epidemiology. In this study, 853 subjects were recruited from a cohort of Taiwanese adolescents and young adults to investigate the association between urinary concentrations of the acrylonitrile metabolite N-acetyl-S-(2-cyanoethyl)-L-cysteine (CEMA), the oxidative stress product 8-hydroxydeoxyguanosine (8-OHdG) and cardiovascular disease (CVD) risk factors. The geometric mean (SD) of CEMA and 8-OHdG concentrations were 4.67 (8.61) μg/L and 2.97 (2.14) μg/L, respectively. 10% elevated in CEMA (μg/L) was positively correlated with the change of 8-OHdG levels (μg/L) (β = 0.325, SE = 0.105, P = 0.002) in multiple linear regression analyses. The urinary CEMA was not related to other CVD risk factors. In subpopulation analyses, the association between CEMA and 8-OHdG was evident in all genders, adolescents, homeostasis model assessment of insulin resistance score ≥0.89, and environmental tobacco smokers. In this study, we observed that higher levels of CEMA levels were correlated with increased levels of 8-OHdG in this cohort. Future research on exposure to acrylonitrile and oxidative stress was warranted.
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Affiliation(s)
- Chien-Yu Lin
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City, 237, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, 242, Taiwan
| | - Hui-Ling Lee
- Department of Chemistry, Fu Jen Catholic University, New Taipei City, 242, Taiwan
| | - Fung-Chang Sung
- Department of Health Services Administration, College of Public Health, China Medical University, Taichung, 404, Taiwan
| | - Ta-Chen Su
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, 10002, Taiwan; Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University College of Public Health, Taipei, Taiwan.
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Glazier AA, Hafeez N, Mellacheruvu D, Basrur V, Nesvizhskii AI, Lee LM, Shao H, Tang V, Yob JM, Gestwicki JE, Helms AS, Day SM. HSC70 is a chaperone for wild-type and mutant cardiac myosin binding protein C. JCI Insight 2018; 3:99319. [PMID: 29875314 PMCID: PMC6124431 DOI: 10.1172/jci.insight.99319] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 05/01/2018] [Indexed: 11/17/2022] Open
Abstract
Cardiac myosin binding protein C (MYBPC3) is the most commonly mutated gene associated with hypertrophic cardiomyopathy (HCM). Haploinsufficiency of full-length MYBPC3 and disruption of proteostasis have both been proposed as central to HCM disease pathogenesis. Discriminating the relative contributions of these 2 mechanisms requires fundamental knowledge of how turnover of WT and mutant MYBPC3 proteins is regulated. We expressed several disease-causing mutations in MYBPC3 in primary neonatal rat ventricular cardiomyocytes. In contrast to WT MYBPC3, mutant proteins showed reduced expression and failed to localize to the sarcomere. In an unbiased coimmunoprecipitation/mass spectrometry screen, we identified HSP70-family chaperones as interactors of both WT and mutant MYBPC3. Heat shock cognate 70 kDa (HSC70) was the most abundant chaperone interactor. Knockdown of HSC70 significantly slowed degradation of both WT and mutant MYBPC3, while pharmacologic activation of HSC70 and HSP70 accelerated degradation. HSC70 was expressed in discrete striations in the sarcomere. Expression of mutant MYBPC3 did not affect HSC70 localization, nor did it induce a protein folding stress response or ubiquitin proteasome dysfunction. Together these data suggest that WT and mutant MYBPC3 proteins are clients for HSC70, and that the HSC70 chaperone system plays a major role in regulating MYBPC3 protein turnover.
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Affiliation(s)
| | | | | | | | | | - Lap Man Lee
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Hao Shao
- Institute for Neurodegenerative Diseases, UCSF, San Francisco, California, USA
| | - Vi Tang
- Department of Molecular and Integrative Physiology
| | | | - Jason E. Gestwicki
- Institute for Neurodegenerative Diseases, UCSF, San Francisco, California, USA
| | | | - Sharlene M. Day
- Department of Molecular and Integrative Physiology
- Department of Internal Medicine
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35
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Rota F, Conti A, Campo L, Favero C, Cantone L, Motta V, Polledri E, Mercadante R, Dieci G, Bollati V, Fustinoni S. Epigenetic and Transcriptional Modifications in Repetitive Elements in Petrol Station Workers Exposed to Benzene and MTBE. Int J Environ Res Public Health 2018; 15:E735. [PMID: 29649143 PMCID: PMC5923777 DOI: 10.3390/ijerph15040735] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/30/2018] [Accepted: 04/08/2018] [Indexed: 12/19/2022]
Abstract
Benzene, a known human carcinogen, and methyl tert-butyl ether (MTBE), not classifiable as to its carcinogenicity, are fuel-related pollutants. This study investigated the effect of these chemicals on epigenetic and transcriptional alterations in DNA repetitive elements. In 89 petrol station workers and 90 non-occupationally exposed subjects the transcriptional activity of retrotransposons (LINE-1, Alu), the methylation on repeated-element DNA, and of H3K9 histone, were investigated in peripheral blood lymphocytes. Median work shift exposure to benzene and MTBE was 59 and 408 µg/m³ in petrol station workers, and 4 and 3.5 µg/m³, in controls. Urinary benzene (BEN-U), S-phenylmercapturic acid, and MTBE were significantly higher in workers than in controls, while trans,trans-muconic acid (tt-MA) was comparable between the two groups. Increased BEN-U was associated with increased Alu-Y and Alu-J expression; moreover, increased tt-MA was associated with increased Alu-Y and Alu-J and LINE-1 (L1)-5'UTR expression. Among repetitive element methylation, only L1-Pa5 was hypomethylated in petrol station workers compared to controls. While L1-Ta and Alu-YD6 methylation was not associated with benzene exposure, a negative association with urinary MTBE was observed. The methylation status of histone H3K9 was not associated with either benzene or MTBE exposure. Overall, these findings only partially support previous observations linking benzene exposure with global DNA hypomethylation.
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Affiliation(s)
- Federica Rota
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
| | - Anastasia Conti
- Department of Life Sciences, University of Parma, 43124 Parma, Italy.
- Present address: San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), 20132 Milan, Italy.
| | - Laura Campo
- Occupational Medicine Unit, Fondazione Cà Granda, IRCCS Ospedale Maggiore Policlinico, 20122 Milan, Italy.
| | - Chiara Favero
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
| | - Laura Cantone
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
| | - Valeria Motta
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
| | - Elisa Polledri
- Occupational Medicine Unit, Fondazione Cà Granda, IRCCS Ospedale Maggiore Policlinico, 20122 Milan, Italy.
| | - Rosa Mercadante
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
| | - Giorgio Dieci
- Department of Life Sciences, University of Parma, 43124 Parma, Italy.
| | - Valentina Bollati
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
- Occupational Medicine Unit, Fondazione Cà Granda, IRCCS Ospedale Maggiore Policlinico, 20122 Milan, Italy.
| | - Silvia Fustinoni
- EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, Università Degli Studi di Milano, via San Barnaba 8, 20122 Milan, Italy.
- Occupational Medicine Unit, Fondazione Cà Granda, IRCCS Ospedale Maggiore Policlinico, 20122 Milan, Italy.
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Robichaux WG, Cheng X. Intracellular cAMP Sensor EPAC: Physiology, Pathophysiology, and Therapeutics Development. Physiol Rev 2018; 98:919-1053. [PMID: 29537337 PMCID: PMC6050347 DOI: 10.1152/physrev.00025.2017] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/05/2017] [Accepted: 09/06/2017] [Indexed: 12/13/2022] Open
Abstract
This review focuses on one family of the known cAMP receptors, the exchange proteins directly activated by cAMP (EPACs), also known as the cAMP-regulated guanine nucleotide exchange factors (cAMP-GEFs). Although EPAC proteins are fairly new additions to the growing list of cAMP effectors, and relatively "young" in the cAMP discovery timeline, the significance of an EPAC presence in different cell systems is extraordinary. The study of EPACs has considerably expanded the diversity and adaptive nature of cAMP signaling associated with numerous physiological and pathophysiological responses. This review comprehensively covers EPAC protein functions at the molecular, cellular, physiological, and pathophysiological levels; and in turn, the applications of employing EPAC-based biosensors as detection tools for dissecting cAMP signaling and the implications for targeting EPAC proteins for therapeutic development are also discussed.
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Affiliation(s)
- William G Robichaux
- Department of Integrative Biology and Pharmacology, Texas Therapeutics Institute, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center , Houston, Texas
| | - Xiaodong Cheng
- Department of Integrative Biology and Pharmacology, Texas Therapeutics Institute, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center , Houston, Texas
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Savion N, Levine A, Kotev-Emeth S, Bening Abu-Shach U, Broday L. S-allylmercapto-N-acetylcysteine protects against oxidative stress and extends lifespan in Caenorhabditis elegans. PLoS One 2018; 13:e0194780. [PMID: 29579097 PMCID: PMC5868827 DOI: 10.1371/journal.pone.0194780] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 03/11/2018] [Indexed: 01/04/2023] Open
Abstract
S-allylmercapto-N-acetylcysteine (ASSNAC) was shown in our previous study to activate Nrf2-mediated processes and increase glutathione level and resistance to oxidative stress in cultured endothelial cells. In this study, we explored the antioxidant protective effect of ASSNAC in Caenorhabditis elegans (C. elegans). Treatment of gst-4 reporter strain (CL2166) with increasing concentrations of ASSNAC (0.2 to 20 mM) for 24 hours and with ASSNAC (10 mM) for various time periods demonstrated a significant concentration- and time-dependent increase in Glutathione S-transferase (GST) gene expression (up to 60-fold at 20 mM after 24 hours). In addition, ASSNAC (2 mM; 24 hours) treatment of C. elegans strains N2 (wild type strain), gst-4 reporter (CL2166) and temperature sensitive sterile strain (CF512) significantly increased GST enzyme activity by 1.9-, 1.5- and 1.8-fold, respectively. ASSNAC (2.0 mM; 24 hours) increased the reduced glutathione content in N2 and CF512 strains by 5.9- and 4.9-fold, respectively. Exposure of C. elegans (N2 strain) to a lethal concentration of H2O2 (3.5 mM; 120 min) resulted in death of 88% of the nematodes while pretreatment with ASSNAC (24 hours) reduced nematodes death in a concentration-dependent manner down to 8% at 2.0 mM. C. elegans nematodes (strain CF512) cultured on agar plates containing ASSNAC (0.5 to 5.0 mM) demonstrated a significant increase in lifespan compared to control (mean lifespan 26.45 ± 0.64 versus 22.90 ± 0.59 days; log-rank p ≤ 0.001 at 2.0 mM) with a maximal lifespan of 40 versus 36 days. In conclusion, ASSNAC up-regulates the GST gene expression and enzyme activity as well as the glutathione content in C. elegans nematodes and thereby increases their resistance to oxidative stress and extends their lifespan.
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Affiliation(s)
- Naphtali Savion
- Department of Human Molecular Genetics and Biochemistry and Goldschleger Eye Research Institute, Tel Aviv University, Tel-Aviv, Israel
- * E-mail:
| | - Amir Levine
- Department of Human Molecular Genetics and Biochemistry and Goldschleger Eye Research Institute, Tel Aviv University, Tel-Aviv, Israel
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Shlomo Kotev-Emeth
- Department of Human Molecular Genetics and Biochemistry and Goldschleger Eye Research Institute, Tel Aviv University, Tel-Aviv, Israel
| | - Ulrike Bening Abu-Shach
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Limor Broday
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
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Kassem NOF, Kassem NO, Liles S, Zarth AT, Jackson SR, Daffa RM, Chatfield DA, Carmella SG, Hecht SS, Hovell MF. Acrolein Exposure in Hookah Smokers and Non-Smokers Exposed to Hookah Tobacco Secondhand Smoke: Implications for Regulating Hookah Tobacco Products. Nicotine Tob Res 2018; 20:492-501. [PMID: 28591850 PMCID: PMC5896480 DOI: 10.1093/ntr/ntx133] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 06/05/2017] [Indexed: 12/31/2022]
Abstract
Introduction Acrolein is a highly ciliatoxic agent, a toxic respiratory irritant, a cardiotoxicant, and a possible carcinogen present in tobacco smoke including hookah tobacco. Methods 105 hookah smokers and 103 non-smokers attended exclusively hookah smoking social events at either a hookah lounge or private home, and provided urine samples the morning of and the morning after the event. Samples were analyzed for 3-hydroxypropylmercapturic acid (3-HPMA), a metabolite of acrolein. Results Geometric mean (GM) urinary 3-HPMA levels in hookah smokers and non-smokers exposed to secondhand smoke (SHS) increased significantly, 1.41 times, 95% CI = 1.15 to 1.74 and 1.39 times, 95% CI = 1.16 to 1.67, respectively, following a hookah social event. The highest increase (1.68 times, 95% CI = 1.15 to 2.45; p = 0.007) in 3-HPMA post a hookah social event was among daily hookah smokers (GM, from 1991 pmol/mg to 3348 pmol/mg). Pre-to-post event change in urinary 3-HPMA was significantly positively correlated with pre-to-post event change in urinary cotinine among hookah smokers at either location of hookah event, (ρ = 0.359, p = 0.001), and among non-smokers in hookah lounges (ρ = 0.369, p = 0.012). Conclusions Hookah tobacco smoke is a source of acrolein exposure. Findings support regulating hookah tobacco products including reducing humectants and sugar additives, which are precursors of acrolein under certain pyrolysis conditions. We suggest posting health warning signs for indoor smoking in hookah lounges, and encouraging voluntary bans of smoking hookah tobacco in private homes. Implications Our study is the first to quantify the increase in acrolein exposure in hookah smokers and non-smokers exposed to exclusively hookah tobacco SHS at hookah social events in homes or hookah lounges. Our findings provide additional support for regulating hookah tobacco product content, protecting non-smokers' health by posting health warning signs for indoor smoking in hookah lounges, and encouraging home bans on hookah tobacco smoking to safeguard vulnerable residents.
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Affiliation(s)
- Nada O F Kassem
- Center for Behavioral Epidemiology and Community Health (CBEACH), Graduate School of Public Health, Division of Health Promotion, San Diego State University, San Diego, CA, USA
| | - Noura O Kassem
- Center for Behavioral Epidemiology and Community Health (CBEACH), Graduate School of Public Health, Division of Health Promotion, San Diego State University, San Diego, CA, USA
| | - Sandy Liles
- Center for Behavioral Epidemiology and Community Health (CBEACH), Graduate School of Public Health, Division of Health Promotion, San Diego State University, San Diego, CA, USA
| | - Adam T Zarth
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Sheila R Jackson
- Center for Behavioral Epidemiology and Community Health (CBEACH), Graduate School of Public Health, Division of Health Promotion, San Diego State University, San Diego, CA, USA
| | - Reem M Daffa
- Center for Behavioral Epidemiology and Community Health (CBEACH), Graduate School of Public Health, Division of Health Promotion, San Diego State University, San Diego, CA, USA
| | - Dale A Chatfield
- San Diego State University Department of Chemistry, San Diego, CA, USA
| | - Steven G Carmella
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Stephen S Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Melbourne F Hovell
- Center for Behavioral Epidemiology and Community Health (CBEACH), Graduate School of Public Health, Division of Health Promotion, San Diego State University, San Diego, CA, USA
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Li J, Xing X, Zhang X, Liang B, He Z, Gao C, Wang S, Wang F, Zhang H, Zeng S, Fan J, Chen L, Zhang Z, Zhang B, Liu C, Wang Q, Lin W, Dong G, Tang H, Chen W, Xiao Y, Li D. Enhanced H3K4me3 modifications are involved in the transactivation of DNA damage responsive genes in workers exposed to low-level benzene. Environ Pollut 2018; 234:127-135. [PMID: 29175474 DOI: 10.1016/j.envpol.2017.11.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/03/2017] [Accepted: 11/09/2017] [Indexed: 05/18/2023]
Abstract
In this study, we explore whether altered global histone modifications respond to low-level benzene exposure as well as their association with the hematotoxicity. We recruited 147 low-level benzene-exposed workers and 122 control workers from a petrochemical factory in Maoming City, Guangdong Province, China. The internal exposure marker level, urinary S-phenylmercapturic acid (SPMA), in benzene-exposed workers was 1.81-fold higher than that of the controls (P < 0.001). ELISA method was established to examine the specific histone modifications in human peripheral blood lymphocytes (PBLCs) of workers. A decrease in the counts of white blood cells (WBC), neutrophils, lymphocytes, and monocytes appeared in the benzene-exposed group (all P < 0.05) compared to the control group. Global trimethylated histone 3 lysine 4 (H3K4me3) modification was enhanced in the benzene-exposed group (P < 0.05) and was positively associated with the concentration of urinary SPMA (β = 0.103, P = 0.045) and the extent of DNA damage (% Tail DNA: β = 0.181, P = 0.022), but was negatively associated with the leukocyte count (WBC: β = -0.038, P = 0.023). The in vitro study revealed that H3K4me3 mark was enriched in the promoters of several DNA damage responsive (DDR) genes including CRY1, ERCC2, and TP53 in primary human lymphocytes treated with hydroquinone. Particularly, H3K4me3 modification was positively correlated with the expression of CRY1 in the PBLCs of benzene-exposed workers. These observations indicate that H3K4me3 modification might mediate the transcriptional regulation of DDR genes in response to low-dose benzene exposure.
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Affiliation(s)
- Jie Li
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiumei Xing
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xinjie Zhang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Boxuan Liang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zhini He
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Chen Gao
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shan Wang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Fangping Wang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Haiyan Zhang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shan Zeng
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Junling Fan
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Liping Chen
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zhengbao Zhang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Bo Zhang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Caixia Liu
- Shantou Medical College, Shantou University, Guangdong, China
| | - Qing Wang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Weiwei Lin
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Guanghui Dong
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Huanwen Tang
- Department of Toxicology, School of Public Health, Guangdong Medical University, Guangdong, China
| | - Wen Chen
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yongmei Xiao
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Daochuan Li
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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Luo YS, Furuya S, Chiu W, Rusyn I. Characterization of inter-tissue and inter-strain variability of TCE glutathione conjugation metabolites DCVG, DCVC, and NAcDCVC in the mouse. J Toxicol Environ Health A 2017; 81:37-52. [PMID: 29190187 PMCID: PMC6088749 DOI: 10.1080/15287394.2017.1408512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/20/2017] [Indexed: 05/24/2023]
Abstract
Trichloroethylene (TCE) is a ubiquitous environmental toxicant that is a liver and kidney carcinogen. Conjugation of TCE with glutathione (GSH) leads to formation of nepthrotoxic and mutagenic metabolites postulated to be critical for kidney cancerdevelopment; however, relatively little is known regarding their tissue levels as previous analytical methods for their detection lacked sensitivity. Here, an LC-MS/MS-based method for simultaneous detection of S-(1,2-dichlorovinyl)-glutathione (DCVG), S-(1,2-dichlorovinyl)-L-cysteine (DCVC), and N-acetyl-S-(1,2-dichlorovinyl)-L-cysteine (NAcDCVC) in multiple mouse tissues was developed. This analytical method is rapid, sensitive (limits of detection (LOD) 3-30 fmol across metabolites and tissues), and robust to quantify all three metabolites in liver, kidneys, and serum. The method was used to characterize inter-tissue and inter-strain variability in formation of conjugative metabolites of TCE. Single oral dose of TCE (24, 240 or 800 mg/kg) was administered to male mice from 20 inbred strains of Collaborative Cross. Inter-strain variability in the levels of DCVG, DCVC, and NAcDCVC (GSD = 1.6-2.9) was observed. Whereas NAcDCVC was distributed equally among analyzed tissues, highest levels of DCVG were detected in liver and DCVC in kidneys. Evidence indicated that inter-strain variability in conjugative metabolite formation of TCE might affect susceptibility to adverse health effects and that this method might aid in filling data gaps in human health assessment of TCE.
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Affiliation(s)
| | | | | | - Ivan Rusyn
- Corresponding author: Ivan Rusyn, Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843; ; (979)-458-9866
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Kavlie A, Wiiger MT, Husbyn M, Stormorken H, Prydz H. A novel gene mutation in the 60s loop of human coagulation factor VII – inhibition of interdomain crosstalk. Thromb Haemost 2017; 91:28-37. [PMID: 14691565 DOI: 10.1160/th03-05-0258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
SummaryA novel mutation in the factor VII gene resulting in procoagulant activity of 7.5% and antigen levels of 23% is presented. Single-stranded conformational polymorphism and DNA sequencing analysis revealed heterozygous shifts, and mutations were detected in exons 5, 7 and 8. The mutant L204P in exon 7 was novel, while the common polymorphisms, H115H and R353Q, were located in exons 5 and 8, respectively.The molecular effect of the L204P mutation was characterized using recombinant mammalian expression in Chinese hamster ovary cells. Low levels (4 ng/ml) of secreted mutant protein were found in transiently transfected cells compared to wild-type factor VII (83 ng/ml). Metabolic labeling demonstrated that the rate of mutant protein synthesis was similar to that of wild-type FVII, and the mutant protein accumulated intracellularly with no signs of increased degradation during a four-hour chase. No interaction between secreted P204 protein and immobilized soluble tissue factor was detected using surface plasmon resonance. The activation rate of recombinant mutant FVII protein was strongly reduced compared to wild-type FVII. A 9-fold reduction in the rate of FX activation was detected whereas Km was nearly the same for wild-type and the mutant. This slow rate was caused by a correspondingly lowered rate of P204 activation. A synthetic peptide sequence comprising amino acids 177−206 blocked binding of FVIIa to the TF-chip, and the subsequent factor X activation with an IC50 value of 0.5 μM in a chromogenic factor Xa assay. Additionally, evaluation of the peptide by surface plasmon resonance analysis resulted in inhibition of complex formation with an apparent Ki of 7 μM.
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Affiliation(s)
- Anita Kavlie
- Biotechnology Centre of Oslo, University of Oslo, Oslo, Norway
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Rosati MV, Sancini A, Tomei F, Sacco C, Traversini V, De Vita A, De Cesare DP, Giammichele G, De Marco F, Pagliara F, Massoni F, Ricci L, Tomei G, Ricci S. Correlation between benzene and testosterone in workers exposed to urban pollution. Clin Ter 2017; 168:e380-e387. [PMID: 29209688 DOI: 10.7417/t.2017.2038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
AIM Many studies have examined the effects of benzene on testosterone. The purpose of this study was to evaluate the possible correlation between the blood levels of benzene and the levels of testosterone. MATERIALS AND METHODS The study involved a group of 148 subjects. For every worker have been made out a blood sample for the evaluation of benzene and testosterone levels and an urine analysis for the evaluation of the levels of trans, trans-muconic acid and S-phenylmercapturic acid. We estimated the Pearson correlation coefficient between the variables in the sample and the urinary metabolites, age, length of service, gender, BMI. For the analysis of the major confounding factors it was performed a multiple linear regression. RESULTS The Pearson correlation coefficiet showed: 1. a significant inverse correlation between the S-phenyl mercapturic acid and free testosterone; 2. a significant direct correlation between trans-trans muconic acid and BMI. After dividing the sample according to the median of blood benzene (161.0 ng / L), Pearson correlation coefficient showed a significant inverse correlation between the S-phenyl mercapturic acid and free testosterone in the group with values below this median. CONCLUSIONS Our results, to be considered preliminary, suggest that occupational exposure to low levels of benzene, present in urban pollution, affect the blood levels of testosterone. These results need to be confirmed in future studies, with the eventual possibility of including more specific fertility tests.
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Affiliation(s)
- M V Rosati
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - A Sancini
- Spin off of University of Rome "Sapienza" "Sipro", Rome
| | - F Tomei
- Spin off of University of Rome "Sapienza" "Sipro", Rome
| | - C Sacco
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - V Traversini
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - A De Vita
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - D P De Cesare
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - G Giammichele
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - F De Marco
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - F Pagliara
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome
| | - F Massoni
- Department of Anatomy, Histology, Legal Medicine and Orthopaedics, Sapienza University of Rome, Rome
| | - L Ricci
- Department of Anatomy, Histology, Legal Medicine and Orthopaedics, Sapienza University of Rome, Rome
| | - G Tomei
- Department of Psychiatric and Psychological Science, University of Rome " Sapienza", Rome, Italy
| | - S Ricci
- Department of Anatomy, Histology, Medical-Legal and the Orthopedics, Specialty School of Occupational Medicine, Unit of Occupational Medicine, University of Rome "Sapienza", Rome - Department of Anatomy, Histology, Legal Medicine and Orthopaedics, Sapienza University of Rome, Rome
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Heldin J, O'Callaghan P, Hernández Vera R, Fuchs PF, Gerwins P, Kreuger J. FGD5 sustains vascular endothelial growth factor A (VEGFA) signaling through inhibition of proteasome-mediated VEGF receptor 2 degradation. Cell Signal 2017; 40:125-132. [PMID: 28927665 DOI: 10.1016/j.cellsig.2017.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/02/2017] [Accepted: 09/14/2017] [Indexed: 11/17/2022]
Abstract
The complete repertoire of endothelial functions elicited by FGD5, a guanine nucleotide exchange factor activating the Rho GTPase Cdc42, has yet to be elucidated. Here we explore FGD5's importance during vascular endothelial growth factor A (VEGFA) signaling via VEGF receptor 2 (VEGFR2) in human endothelial cells. In microvascular endothelial cells, FGD5 is located at the inner surface of the cell membrane as well as at the outer surface of EEA1-positive endosomes carrying VEGFR2. The latter finding prompted us to explore if FGD5 regulates VEGFR2 dynamics. We found that depletion of FGD5 in microvascular cells inhibited their migration towards a stable VEGFA gradient. Furthermore, depletion of FGD5 resulted in accelerated VEGFR2 degradation, which was reverted by lactacystin-mediated proteasomal inhibition. Our results thus suggest a mechanism whereby FGD5 sustains VEGFA signaling and endothelial cell chemotaxis via inhibition of proteasome-dependent VEGFR2 degradation.
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Affiliation(s)
- Johan Heldin
- Dept. of Pharmaceutical Biosciences, Pharmaceutical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Paul O'Callaghan
- Dept. of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | | | | | - Pär Gerwins
- Dept. of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Johan Kreuger
- Dept. of Medical Cell Biology, Uppsala University, Uppsala, Sweden.
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Farizatto KLG, Ikonne US, Almeida MF, Ferrari MFR, Bahr BA. Aβ42-mediated proteasome inhibition and associated tau pathology in hippocampus are governed by a lysosomal response involving cathepsin B: Evidence for protective crosstalk between protein clearance pathways. PLoS One 2017; 12:e0182895. [PMID: 28797057 PMCID: PMC5552263 DOI: 10.1371/journal.pone.0182895] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 07/26/2017] [Indexed: 12/12/2022] Open
Abstract
Impaired protein clearance likely increases the risk of protein accumulation disorders including Alzheimer’s disease (AD). Protein degradation through the proteasome pathway decreases with age and in AD brains, and the Aβ42 peptide has been shown to impair proteasome function in cultured cells and in a cell-free model. Here, Aβ42 was studied in brain tissue to measure changes in protein clearance pathways and related secondary pathology. Oligomerized Aβ42 (0.5–1.5 μM) reduced proteasome activity by 62% in hippocampal slice cultures over a 4-6-day period, corresponding with increased tau phosphorylation and reduced synaptophysin levels. Interestingly, the decrease in proteasome activity was associated with a delayed inverse effect, >2-fold increase, regarding lysosomal cathepsin B (CatB) activity. The CatB enhancement did not correspond with the Aβ42-mediated phospho-tau alterations since the latter occurred prior to the CatB response. Hippocampal slices treated with the proteasome inhibitor lactacystin also exhibited an inverse effect on CatB activity with respect to diminished proteasome function. Lactacystin caused earlier CatB enhancement than Aβ42, and no correspondence was evident between up-regulated CatB levels and the delayed synaptic pathology indicated by the loss of pre- and postsynaptic markers. Contrasting the inverse effects on the proteasomal and lysosomal pathways by Aβ42 and lactacystin, such were not found when CatB activity was up-regulated two-fold with Z-Phe-Ala-diazomethylketone (PADK). Instead of an inverse decline, proteasome function was increased marginally in PADK-treated hippocampal slices. Unexpectedly, the proteasomal augmentation was significantly pronounced in Aβ42-compromised slices, while absent in lactacystin-treated tissue, resulting in >2-fold improvement for nearly complete recovery of proteasome function by the CatB-enhancing compound. The PADK treatment also reduced Aβ42-mediated tau phosphorylation and synaptic marker declines, corresponding with the positive modulation of both proteasome activity and the lysosomal CatB enzyme. These findings indicate that proteasomal stress contributes to AD-type pathogenesis and that governing such pathology occurs through crosstalk between the two protein clearance pathways.
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Affiliation(s)
- Karen L. G. Farizatto
- Biotechnology Research and Training Center, William C. Friday Laboratory, University of North Carolina—Pembroke, Pembroke, North Carolina, United States of America
- Department of Genetics and Evolutionary Biology, Institute for Biosciences, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Uzoma S. Ikonne
- Biotechnology Research and Training Center, William C. Friday Laboratory, University of North Carolina—Pembroke, Pembroke, North Carolina, United States of America
| | - Michael F. Almeida
- Biotechnology Research and Training Center, William C. Friday Laboratory, University of North Carolina—Pembroke, Pembroke, North Carolina, United States of America
| | - Merari F. R. Ferrari
- Department of Genetics and Evolutionary Biology, Institute for Biosciences, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Ben A. Bahr
- Biotechnology Research and Training Center, William C. Friday Laboratory, University of North Carolina—Pembroke, Pembroke, North Carolina, United States of America
- * E-mail:
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Simko F, Pechanova O, Repova K, Aziriova S, Krajcirovicova K, Celec P, Tothova L, Vrankova S, Balazova L, Zorad S, Adamcova M. Lactacystin-Induced Model of Hypertension in Rats: Effects of Melatonin and Captopril. Int J Mol Sci 2017; 18:ijms18081612. [PMID: 28757582 PMCID: PMC5578004 DOI: 10.3390/ijms18081612] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 05/26/2017] [Revised: 07/10/2017] [Accepted: 07/13/2017] [Indexed: 12/15/2022] Open
Abstract
Lactacystin is a proteasome inhibitor that interferes with several factors involved in heart remodelling. The aim of this study was to investigate whether the chronic administration of lactacystin induces hypertension and heart remodelling and whether these changes can be modified by captopril or melatonin. In addition, the lactacystin-model was compared with NG-nitro-l-arginine-methyl ester (L-NAME)- and continuous light-induced hypertension. Six groups of three-month-old male Wistar rats (11 per group) were treated for six weeks as follows: control (vehicle), L-NAME (40 mg/kg/day), continuous light (24 h/day), lactacystin (5 mg/kg/day) alone, and lactacystin with captopril (100 mg/kg/day), or melatonin (10 mg/kg/day). Lactacystin treatment increased systolic blood pressure (SBP) and induced fibrosis of the left ventricle (LV), as observed in L-NAME-hypertension and continuous light-hypertension. LV weight and the cross-sectional area of the aorta were increased only in L-NAME-induced hypertension. The level of oxidative load was preserved or reduced in all three models of hypertension. Nitric oxide synthase (NOS) activity in the LV and kidney was unchanged in the lactacystin group. Nuclear factor-kappa B (NF-κB) protein expression in the LV was increased in all treated groups in the cytoplasm, however, in neither group in the nucleus. Although melatonin had no effect on SBP, only this indolamine (but not captopril) reduced the concentration of insoluble and total collagen in the LV and stimulated the NO-pathway in the lactacystin group. We conclude that chronic administration of lactacystin represents a novel model of hypertension with collagenous rebuilding of the LV, convenient for testing antihypertensive drugs or agents exerting a cardiovascular benefit beyond blood pressure reduction.
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Affiliation(s)
- Fedor Simko
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Sasinkova 4, 81108 Bratislava, Slovakia.
- 3rd Clinic of Internal Medicine, Faculty of Medicine, Comenius University, 83305 Bratislava, Slovakia.
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, 84505 Bratislava, Slovakia.
| | - Olga Pechanova
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, 81371 Bratislava, Slovakia.
| | - Kristina Repova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Sasinkova 4, 81108 Bratislava, Slovakia.
| | - Silvia Aziriova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Sasinkova 4, 81108 Bratislava, Slovakia.
| | - Kristina Krajcirovicova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Sasinkova 4, 81108 Bratislava, Slovakia.
| | - Peter Celec
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Sasinkova 4, 81108 Bratislava, Slovakia.
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia.
| | - Lubomira Tothova
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia.
| | - Stanislava Vrankova
- Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, 81371 Bratislava, Slovakia.
| | - Lucia Balazova
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, 84505 Bratislava, Slovakia.
| | - Stefan Zorad
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, 84505 Bratislava, Slovakia.
| | - Michaela Adamcova
- Department of Physiology, Faculty of Medicine, Charles University, 50003 Hradec Kralove, Czech Republic.
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Boldry EJ, Patel YM, Kotapati S, Esades A, Park SL, Tiirikainen M, Stram DO, Le Marchand L, Tretyakova N. Genetic Determinants of 1,3-Butadiene Metabolism and Detoxification in Three Populations of Smokers with Different Risks of Lung Cancer. Cancer Epidemiol Biomarkers Prev 2017; 26:1034-1042. [PMID: 28292921 PMCID: PMC5500389 DOI: 10.1158/1055-9965.epi-16-0838] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 03/01/2017] [Accepted: 03/01/2017] [Indexed: 12/31/2022] Open
Abstract
Background: 1,3-Butadiene (BD) is an important carcinogen in tobacco smoke that undergoes metabolic activation to DNA-reactive epoxides. These species can be detoxified via glutathione conjugation and excreted in urine as the corresponding N-acetylcysteine conjugates. We hypothesize that single nucleotide polymorphisms (SNPs) in BD-metabolizing genes may change the balance of BD bioactivation and detoxification in White, Japanese American, and African American smokers, potentially contributing to ethnic differences in lung cancer risk.Methods: We measured the levels of BD metabolites, 1- and 2-(N-acetyl-L-cysteine-S-yl)-1-hydroxybut-3-ene (MHBMA) and N-acetyl-S-(3,4-dihydroxybutyl)-L-cysteine (DHBMA), in urine samples from a total of 1,072 White, Japanese American, and African American smokers and adjusted these values for body mass index, age, batch, and total nicotine equivalents. We also conducted a genome-wide association study to identify genetic determinants of BD metabolism.Results: We found that mean urinary MHBMA concentrations differed significantly by ethnicity (P = 4.0 × 10-25). African Americans excreted the highest levels of MHBMA followed by Whites and Japanese Americans. MHBMA levels were affected by GSTT1 gene copy number (P < 0.0001); conditional on GSTT1, no other polymorphisms showed a significant association. Urinary DHBMA levels also differed between ethnic groups (P = 3.3 × 10-4), but were not affected by GSTT1 copy number (P = 0.226).Conclusions:GSTT1 gene deletion has a strong effect on urinary MHBMA levels, and therefore BD metabolism, in smokers.Impact: Our results show that the order of MHBMA levels among ethnic groups is consistent with their respective lung cancer risk and can be partially explained by GSTT1 genotype. Cancer Epidemiol Biomarkers Prev; 26(7); 1034-42. ©2017 AACR.
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Affiliation(s)
- Emily J Boldry
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Yesha M Patel
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Srikanth Kotapati
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Amanda Esades
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Sungshim L Park
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Maarit Tiirikainen
- University of Hawaii Cancer Center, Epidemiology Program, Honolulu, Hawaii
| | - Daniel O Stram
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California.
| | - Loïc Le Marchand
- University of Hawaii Cancer Center, Epidemiology Program, Honolulu, Hawaii.
| | - Natalia Tretyakova
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota.
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Goempel K, Tedsen L, Ruenz M, Bakuradze T, Schipp D, Galan J, Eisenbrand G, Richling E. Biomarker monitoring of controlled dietary acrylamide exposure indicates consistent human endogenous background. Arch Toxicol 2017; 91:3551-3560. [PMID: 28534225 PMCID: PMC5696489 DOI: 10.1007/s00204-017-1990-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/11/2017] [Indexed: 11/30/2022]
Abstract
The aim of the present study was to explore the relation of controlled dietary acrylamide (AA) intake with the excretion of AA-related urinary mercapturic acids (MA), N-acetyl-S-(carbamoylethyl)-l-cysteine (AAMA) and N-acetyl-S-(1-carbamoyl-2-hydroxyethyl)-l-cysteine (GAMA). Excretion kinetics of these short-term exposure biomarkers were monitored under strictly controlled conditions within a duplicate diet human intervention study. One study arm (group A, n = 6) ingested AA via coffee (0.15–0.17 µg/kg bw) on day 6 and in a meal containing an upper exposure level of AA (14.1–15.9 μg/kg bw) on day 10. The other arm (group B) was on AA minimized diet (washout, 0.05–0.06 µg/kg bw) throughout the whole 13-day study period. On day 6, these volunteers ingested 13C3D3-AA (1 μg/kg bw). In both arms, urinary MA excretion was continuously monitored and blood samples were taken to determine hemoglobin adducts. Ingestion of four cups of coffee resulted in a slightly enhanced short-term biomarker response within the background range of group B. At the end of the 13-day washout period, group B excreted an AAMA baseline level of 0.14 ± 0.10 µmol/d although AA intake was only about 0.06 µmol/d. This sustained over-proportional AAMA background suggested an endogenous AA baseline exposure level of 0.3–0.4 µg/kg bw/d. The excretion of 13C3D3-AA was practically complete within 72–96 h which rules out delayed release of AA (or any other MA precursor) from deep body compartments. The results provide compelling support for the hypothesis of a sustained endogenous AA formation in the human body.
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Affiliation(s)
- Katharina Goempel
- Division of Food Chemistry and Toxicology, Department of Chemistry, University of Kaiserslautern, Erwin-Schroedinger-Straße 52, 67663, Kaiserslautern, Germany
| | - Laura Tedsen
- Division of Food Chemistry and Toxicology, Department of Chemistry, University of Kaiserslautern, Erwin-Schroedinger-Straße 52, 67663, Kaiserslautern, Germany
| | - Meike Ruenz
- Division of Food Chemistry and Toxicology, Department of Chemistry, University of Kaiserslautern, Erwin-Schroedinger-Straße 52, 67663, Kaiserslautern, Germany
| | - Tamara Bakuradze
- Division of Food Chemistry and Toxicology, Department of Chemistry, University of Kaiserslautern, Erwin-Schroedinger-Straße 52, 67663, Kaiserslautern, Germany
| | - Dorothea Schipp
- , ds-statistik.de, Pirnaer Straße 1, 01824, Rosenthal-Bielatal, Germany
| | - Jens Galan
- , Hochgewanne 19, 67269, Grünstadt, Germany
| | - Gerhard Eisenbrand
- Division of Food Chemistry and Toxicology, Department of Chemistry, University of Kaiserslautern, Erwin-Schroedinger-Straße 52, 67663, Kaiserslautern, Germany
| | - Elke Richling
- Division of Food Chemistry and Toxicology, Department of Chemistry, University of Kaiserslautern, Erwin-Schroedinger-Straße 52, 67663, Kaiserslautern, Germany.
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48
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Kim J, Choi S, Saxena N, Singh AK, Singh I, Won JS. Regulation of STAT3 and NF-κB activations by S-nitrosylation in multiple myeloma. Free Radic Biol Med 2017; 106:245-253. [PMID: 28232202 PMCID: PMC5826580 DOI: 10.1016/j.freeradbiomed.2017.02.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 02/09/2017] [Accepted: 02/20/2017] [Indexed: 10/20/2022]
Abstract
Numerous reports suggest that aberrant activations of STAT3 and NF-κB promote survival and proliferation of multiple myeloma (MM) cells. In the present report, we demonstrate that a synthetic S-nitrosothiol compound, S-nitroso-N-acetylcysteine (SNAC), inhibits proliferation and survival of multiple MM cells via S-nitrosylation-dependent inhibition of STAT3 and NF-κB. In human MM cells (e.g. U266, H929, and IM-9 cells), SNAC treatment increased S-nitrosylation of STAT3 and NF-κB and inhibited their activities. Consequently, SNAC treatment resulted in MM cell cycle arrest at G1/S check point and inhibited their proliferation. SNAC also decreased the expression of cell survival factors and increased the activities of caspases, thus increased sensitivity of MM cells to melphalan, a chemotherapeutic agent for MM. In U266 xenografted mice, SNAC treatment decreased the activity of STAT3 and reduced the growth of human CD138 positive cells (U266 cells) in the bone marrow and also reduced their production of human IgE into the serum. Taken together, these data document the S-nitrosylation mediated inhibition of MM cell proliferation and cell survival via inhibition of STAT3 and NF-κB pathways and its efficacy in animal model of MM.
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Affiliation(s)
- Jinsu Kim
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Seungho Choi
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Nishant Saxena
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States
| | - Avtar K Singh
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, United States; Pathology and Laboratory Medicine Service, Ralph H. Johnson Veterans Administration Medical Center, Charleston, SC 29401, United States
| | - Inderjit Singh
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, United States.
| | - Je-Seong Won
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, United States.
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Matondo M, Marcellin M, Chaoui K, Bousquet-Dubouch MP, Gonzalez-de-Peredo A, Monsarrat B, Burlet-Schiltz O. Determination of differentially regulated proteins upon proteasome inhibition in AML cell lines by the combination of large-scale and targeted quantitative proteomics. Proteomics 2017; 17:1600089. [PMID: 27709814 PMCID: PMC5396343 DOI: 10.1002/pmic.201600089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 02/10/2016] [Revised: 09/05/2016] [Accepted: 10/14/2016] [Indexed: 01/08/2023]
Abstract
The ubiquitin-proteasome pathway (UPP) plays a critical role in the degradation of proteins implicated in cell cycle control, signal transduction, DNA damage response, apoptosis and immune response. Proteasome inhibitors can inhibit the growth of a broad spectrum of human cancer cells by altering the balance of intracellular proteins. However, the targets of these compounds in acute myeloid leukemia (AML) cells have not been fully characterized. Herein, we combined large-scale quantitative analysis by SILAC-MS and targeted quantitative proteomic analysis in order to identify proteins regulated upon proteasome inhibition in two AML cell lines displaying different stages of maturation: immature KG1a cells and mature U937 cells. In-depth data analysis enabled accurate quantification of more than 7000 proteins in these two cell lines. Several candidates were validated by selected reaction monitoring (SRM) measurements in a large number of samples. Despite the broad range of proteins known to be affected by proteasome inhibition, such as heat shock (HSP) and cell cycle proteins, our analysis identified new differentially regulated proteins, including IL-32, MORF family mortality factors and apoptosis inducing factor SIVA, a target of p53. It could explain why proteasome inhibitors induce stronger apoptotic responses in immature AML cells.
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Affiliation(s)
- Mariette Matondo
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, France
| | - Marlène Marcellin
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, France
| | - Karima Chaoui
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, France
| | | | - Anne Gonzalez-de-Peredo
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, France
| | - Bernard Monsarrat
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, France
| | - Odile Burlet-Schiltz
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, France
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50
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Coppens J, Bentea E, Bayliss JA, Demuyser T, Walrave L, Albertini G, Van Liefferinge J, Deneyer L, Aourz N, Van Eeckhaut A, Portelli J, Andrews ZB, Massie A, De Bundel D, Smolders I. Caloric Restriction Protects against Lactacystin-Induced Degeneration of Dopamine Neurons Independent of the Ghrelin Receptor. Int J Mol Sci 2017; 18:ijms18030558. [PMID: 28273852 PMCID: PMC5372574 DOI: 10.3390/ijms18030558] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 12/21/2016] [Revised: 02/14/2017] [Accepted: 02/20/2017] [Indexed: 02/06/2023] Open
Abstract
Parkinson’s disease (PD) is a neurodegenerative disorder, characterized by a loss of dopamine (DA) neurons in the substantia nigra pars compacta (SNc). Caloric restriction (CR) has been shown to exert ghrelin-dependent neuroprotective effects in the 1-methyl-4-phenyl-1,2,3,6-tetrathydropyridine (MPTP)-based animal model for PD. We here investigated whether CR is neuroprotective in the lactacystin (LAC) mouse model for PD, in which proteasome disruption leads to the destruction of the DA neurons of the SNc, and whether this effect is mediated via the ghrelin receptor. Adult male ghrelin receptor wildtype (WT) and knockout (KO) mice were maintained on an ad libitum (AL) diet or on a 30% CR regimen. After 3 weeks, LAC was injected unilaterally into the SNc, and the degree of DA neuron degeneration was evaluated 1 week later. In AL mice, LAC injection significanty reduced the number of DA neurons and striatal DA concentrations. CR protected against DA neuron degeneration following LAC injection. However, no differences were observed between ghrelin receptor WT and KO mice. These results indicate that CR can protect the nigral DA neurons from toxicity related to proteasome disruption; however, the ghrelin receptor is not involved in this effect.
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Affiliation(s)
- Jessica Coppens
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Eduard Bentea
- Research Group Pharmaceutical Biotechnology and Molecular Biology (MICH), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Jacqueline A Bayliss
- Department of Physiology, School of Biomedical and Psychological Sciences, Monash University, Clayton, Melbourne 3800, Australia.
| | - Thomas Demuyser
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Laura Walrave
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Giulia Albertini
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Joeri Van Liefferinge
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Lauren Deneyer
- Research Group Pharmaceutical Biotechnology and Molecular Biology (MICH), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Najat Aourz
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Ann Van Eeckhaut
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Jeanelle Portelli
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Zane B Andrews
- Department of Physiology, School of Biomedical and Psychological Sciences, Monash University, Clayton, Melbourne 3800, Australia.
| | - Ann Massie
- Research Group Pharmaceutical Biotechnology and Molecular Biology (MICH), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Dimitri De Bundel
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
| | - Ilse Smolders
- Research Group Experimental Pharmacology (EFAR/FASC), Center for Neurosciences (C4N), Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium.
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