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https://www.readbyqxmd.com/read/29897530/metabolism-and-toxicity-of-trichloroethylene-and-tetrachloroethylene-in-cytochrome-p450-2e1-knockout-and-humanized-transgenic-mice
#1
Yu-Syuan Luo, Shinji Furuya, Valerie Y Soldatov, Oksana Kosyk, Hong Sik Yoo, Hisataka Fukushima, Lauren Lewis, Yasuhiro Iwata, Ivan Rusyn
Trichloroethylene (TCE) and tetrachloroethylene (PCE) are structurally similar olefins that can cause liver and kidney toxicity. Adverse effects of these chemicals are associated with metabolism to oxidative and glutathione conjugation moieties. It is thought that CYP2E1 is crucial to the oxidative metabolism of TCE and PCE, and may also play a role in formation of nephrotoxic metabolites; however, inter-species and inter-individual differences in contribution of CYP2E1 to metabolism and toxicity are not well understood...
April 20, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29579546/role-of-selective-blocking-of-bradykinin-b1-receptor-in-attenuating-immune-liver-injury-in-trichloroethylene-sensitized-mice
#2
Jiaxiang Zhang, Na Li, Ling Yang, Dandan Zang, Peng Yang, Hui Wang, Tong Shen, Qi-Xing Zhu
Trichloroethylene (TCE) is able to induce trichloroethylene hypersensitivity syndrome (THS) with multi-system immune injuries. In our previous study, we found kallikrein-kinin system (KKS) activation, including the bradykinin B1 receptor (B1R), which contributed to immune organ injury in TCE sensitized mice. However, the mechanism of B1R mediating immune dysfunction is not clarified. The present study initiates to investigate the potential mechanism of B1R on liver injury. We establish a TCE sensitized BALB/c mouse model to explore the mechanism with or without a B1R inhibitor R715...
August 2018: Cytokine
https://www.readbyqxmd.com/read/29534626/nf-%C3%AE%C2%BAb-signaling-pathway-enhanced-complement-activation-mediates-renal-injury-in-trichloroethylene-sensitized-mice
#3
Min Liu, Hui Wang, Jiaxiang Zhang, Xiaodong Yang, Bodong Li, Changhao Wu, Qixing Zhu
Both NF-κB pathway and complement activation appear to be involved in kidney damage induced by trichloroethylene (TCE). However, any relationship between these two systems has not yet been established. The present study aimed to clarify the role of NF-κB in complement activation and renal injury in TCE-sensitized BALB/c mice. Mice were sensitized by an initial subcutaneous injection and repeated focal applications of TCE to dorsal skin at specified timepoints. NF-κB inhibitor pyrrolidine dithiocarbamate (PDTC) was injected (intraperitoneal) before the final two focal TCE challenges...
December 2018: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/29510304/viral-mimic-polyinosine-polycytidylic-acid-potentiates-liver-injury-in-trichloroethylene-sensitized-mice-viral-chemical-interaction-as-a-novel-mechanism
#4
Cheng Zhang, Yun Yu, Jun-Feng Yu, Bo-Dong Li, Cheng-Fan Zhou, Xiao-Dong Yang, Xian Wang, Changhao Wu, Tong Shen, Qi-Xing Zhu
Occupational trichloroethylene (TCE) exposure can induce hypersensitivity dermatitis and severe liver injury. Recently, several clinical investigations indicate that viral infection, such as human herpesvirus-6, is associated with hepatic dysfunction in patients with TCE-related generalized skin disorders. However, whether viral infection potentiates TCE-induced liver injury remains unknown. This study aimed to explore the contribution of viral infection to the development of TCE-sensitization-induced liver injury in BALB/c mice...
July 15, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29415653/xanthine-oxidase-inhibitors-for-prevention-of-cardiovascular-events-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#5
REVIEW
Markus Bredemeier, Lediane Moreira Lopes, Matheus Augusto Eisenreich, Sheila Hickmann, Guilherme Kopik Bongiorno, Rui d'Avila, André Luis Bittencourt Morsch, Fernando da Silva Stein, Guilherme Gomes Dias Campos
BACKGROUND: Xanthine oxidase inhibitors (XOI), classified as purine-like (allopurinol and oxypurinol) and non-purine (febuxostat and topiroxostat) XOI, present antioxidant properties by reducing the production of reactive oxygen species derived from purine metabolism. Oxidative stress is an important factor related to endothelial dysfunction and ischemia-reperfusion injury, and may be implicated in the pathogenesis of heart failure, hypertension, and ischemic heart disease. However, there is contradictory evidence regarding the possible cardiovascular (CV) protective effect exerted by XOI...
February 7, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29020883/the-immune-response-in-trichloroethylene-hypersensitivity-syndrome-a-review
#6
Jia-Xiang Zhang, Na Li, Hui Wang, Tong Shen, Qi-Xing Zhu
Trichloroethylene (TCE) has been used for a variety of industrial and consumer cleaning purposes because of its ability to dissolve organic substances. The multisystem injuries include those of skin, liver, and kidney, which are defined as TCE hypersensitivity syndrome (THS). THS is a serious occupational health issue. However, the mechanism of immune dysfunction leading to organ injury is poorly understood. Many studies reveal that skin lesions and organ injury caused by TCE are consistent with type IV hypersensitivity, also called delayed hypersensitivity, mediated by T cells...
November 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28975097/ameliorative-effect-of-vitamin-e-on-trichloroethylene-induced-nephrotoxicity-in-rats
#7
Mojgan Heydari, Massumeh Ahmadizadeh, Kambiz Ahmadi Angali
BACKGROUND: 1,1,2-Trichloroethylene (TCE) is an important organic solvent which is widespread in the environment. Work place exposure to TCE has been associated adverse effects in many organs including kidney. Vitamin E is an antioxidant that can overcome oxidative stress. OBJECTIVES: The aim of the present study is to examine the role of vitamin E against destructive effects of TCE on rat kidney. MATERIALS AND METHODS: A total of 35 male Wistar rats were randomly divided into seven groups of equal number in each...
July 2017: Journal of Nephropathology
https://www.readbyqxmd.com/read/28867961/potential-immunotoxic-effects-of-trichloroethylene-induced-iv-allergic-reaction-in-renal-impairment
#8
Jun-Feng Yu, Yan-Yan Feng, Xiao-Feng Shen
Trichloroethylene (TCE) is known to induce allergic contact dermatitis and subsequent occupational medicamentosa-like dermatitis (OMLD) with multi-system injuries, including liver, kidney, and skin injuries. However, the mechanisms underlying immune system dysfunction that result in organ injury have not yet been clearly elucidated. In the present study, we measured the levels of secreted cytokines by effect or T cells in TCE-treated guinea pigs to better understand the contribution of allergic disorders in renal injuries...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/28614920/-role-of-complement-regulatory-protein-cd55-in-the-liver-immune-injury-of-trichloroethylene-sensitized-mice
#9
X Wang, C Zhang, X D Yang, B D Li, D D Zang, P Yang, J X Zhang, Q X Zhu
Objective: To explore the expression of CD55 in liver tissue of trichloroethylene-sensitized mice and discuss the role of CD55 in the liver immune injury of trichloroethylene-sensitized mice. Methods: 6-8 weeks specific pathogen free female BALB/c were randomly divided into blank control group, solvent control group and TCE treatment group to establish BALB/c mice sensitized model. According to mouse skin sensitization reaction score, TCE treatment mice were divided into sensitized and non-sensitized group at 24 h after the last challenge...
April 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28511297/-the-effect-of-complement-c3a-receptor-antagonist-in-the-kidney-immune-injury-in-trichloroethylene-sensitized-mice
#10
P Yang, D D Zang, X D Yang, B D Li, X Wang, J X Zhang, Q X Zhu
Objective: To explore the effect of complement C3 a-C3a receptor in the kidney immune inju-ry in trichloroethylene-sensitized mice by using C3a receptor specific antagonist C3aRA and discuss the patho-genesis of kidney injury in occupational dermatitis medicamentosa-like of trichloroethylene (ODMLT) . Methods: 42 female 6~8 weeks old BALB/c mice of specific pathogen free were randomly divided into blank control group (5) , solvent control group (5) , TCE treatment group (16) and TCE+C3aRA treatment group (16) ...
March 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28182522/the-effects-of-tarantula-cubensis-venom-on-open-wound-healing-in-rats
#11
N Y Gul Satar, I T Cangul, A Topal, H Kurt, V Ipek, G I Onel
OBJECTIVE: The aim of this study was to evaluate the clinical and histopathological effects of two different dosages of alcohol extract of Tarantula cubensis (Theranekron) on open wounds. METHOD: A total of 24 Sprague-Dawley rats were randomly divided into Tarantula cubensis extract (TCE1, n=8) 1/10 diluted, TCE (TCE2, n=8), and (3) vehicle-control (0.2 ml of 96 % ethanol, n=8) groups. Experimental full-thickness 1 x 1cm wounds were created on dorsum skin. TCE or vehicle were given systemically by subcutaneous injections on postoperative days 1 and 4...
February 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28115651/trichloroethylene-exposure-reduces-liver-injury-in-a-mouse-model-of-primary-biliary-cholangitis
#12
Jessica L Ray, Anna K Kopec, Nikita Joshi, Holly Cline-Fedewa, Lawrence H Lash, Kurt J Williams, Patrick S Leung, M Eric Gershwin, James P Luyendyk
Trichloroethylene (TCE) is a persistent environmental contaminant proposed to contribute to autoimmune disease. Experimental studies in lupus-prone MRL+/+ mice have suggested that TCE exposure can trigger autoimmune hepatitis. The vast majority of studies examining the connection between TCE and autoimmunity utilize this model, and the impact of TCE exposure in other established models of autoimmune liver disease is not known. We tested the hypothesis that TCE exposure exacerbates experimental hepatic autoimmunity in dominant negative transforming growth factor beta receptor type II (dnTGFBRII) mice, which develop serological and histological features resembling human primary biliary cholangitis...
April 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28063905/trichloroethylene-induced-formic-aciduria-in-the-male-c-57-bl-6-mouse
#13
Edward A Lock, Paul Keane, Philip H Rowe, John R Foster, Daniel Antoine, Christopher M Morris
1, 1, 2-Trichloroethylene (TCE) is of environmental concern, due to evaporation while handling, chemical processing and leakage from chemical waste sites, leading to its contamination of ground water and air. For several decades there has been issues about possible long term health effects of TCE but recently the International Agency for Research on Cancer (IARC) and the US Environmental Protection Agency classified TCE as a human carcinogen. Links having been established between occupational exposures and kidney cancer and possible links to non-Hodgkin lymphoma and liver cancer, but there is more still more to learn...
March 1, 2017: Toxicology
https://www.readbyqxmd.com/read/27800299/cellular-and-molecular-etiology-of-hepatocyte-injury-in-a-murine-model-of-environmentally-induced-liver-abnormality
#14
M A Al-Griw, R O Alghazeer, S A Al-Azreg, E M Bennour
Exposures to a wide variety of environmental substances are negatively associated with many biological cell systems both in humans and rodents. Trichloroethane (TCE), a ubiquitous environmental toxicant, is used in large quantities as a dissolvent, metal degreaser, chemical intermediate, and component of consumer products. This increases the likelihood of human exposure to these compounds through dermal, inhalation and oral routes. The present in vivo study was aimed to investigate the possible cellular and molecular etiology of liver abnormality induced by early exposure to TCE using a murine model...
2016: Open Veterinary Journal
https://www.readbyqxmd.com/read/27220437/-role-of-kallikrein-kinin-system-activation-in-kidney-injury-induced-by-trichloroethylene-sensitized-mice
#15
M Liu, C Zhang, P Yang, J Huang, D D Zang, J X Zhang, Q X Zhu
OBJECTIVE: Through testing the expression of complement C3 fragment C3b and iC3b, C5b-9 as well as indexes of KKS before and after using kallikrein-kinin system inhibitor PKSI-527, observing the relevant between KKS and complement system, we preliminary study on the mechanism how KKS works on the renal injury of sensitized mice model induced by trichloroethylene. METHODS: Female BALB/c mice (6~8 weeks) were randomly divided into blank control group (5), TCE treated group (15), PKSI-527+TCE treated group (15)...
March 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/27027470/plasma-kallikrein-kinin-system-mediates-immune-mediated-renal-injury-in-trichloroethylene-sensitized-mice
#16
Hui Wang, Jia-Xiang Zhang, Liang-Ping Ye, Shu-Long Li, Feng Wang, Wan-Sheng Zha, Tong Shen, Changhao Wu, Qi-Xing Zhu
Trichloroethylene (TCE) is a major environmental pollutant. An immunological response is a newly-recognized mechanism for TCE-induced kidney damage. However, the role of the plasma kallikrein-kinin system (KKS) in immune-mediated kidney injury has never been examined. This study aimed to explore the role of the key components of the KKS, i.e. plasma kallikrein (PK), bradykinin (BK) and its receptors B1R and B2R, in TCE-induced kidney injury. A mouse model of skin sensitization was used to explore the mechanism of injury with or without a PK inhibitor PKSI...
July 2016: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/26878291/significance-of-multimodal-intraoperative-monitoring-for-the-posterior-cervical-spine-surgery
#17
Ho Jin Lee, Il Sup Kim, Jae Hoon Sung, Sang Won Lee, Jae Taek Hong
OBJECTIVE: The aim of this study was to evaluate the efficacy of multimodal neurophysiologic intra-operative monitoring (IOM) in a cohort of patients who underwent posterior cervical surgery. MATERIAL AND METHODS: A total 182 patients were included in this study. Multi-modal intraoperative monitoring (MIOM, somatosensory-evoked potentials: SSEP/transcranial motor-evoked potentials: TCe-MEP/spontaneous-electromyography: S-EMG) was performed in a consecutive series of 129 patients and the other 53 patients (control group) did not...
April 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/26745549/mitochondrial-dysfunction-disruption-of-f-actin-polymerization-and-transcriptomic-alterations-in-zebrafish-larvae-exposed-to-trichloroethylene
#18
Sara E Wirbisky, Nur P Damayanti, Cecon T Mahapatra, Maria S Sepúlveda, Joseph Irudayaraj, Jennifer L Freeman
Trichloroethylene (TCE) is primarily used as an industrial degreasing agent and has been in use since the 1940s. TCE is released into the soil, surface, and groundwater. From an environmental and regulatory standpoint, more than half of Superfund hazardous waste sites on the National Priority List are contaminated with TCE. Occupational exposure to TCE occurs primarily via inhalation, while environmental TCE exposure also occurs through ingestion of contaminated drinking water. Current literature links TCE exposure to various adverse health effects including cardiovascular toxicity...
February 15, 2016: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/26653642/-study-on-the-expression-of-bradykinin-and-its-receptors-b1r-and-b2r-in-the-kidney-immune-injury-in-trichloroethylene-sensitized-mouse
#19
Hui Wang, Jiaxiang Zhang, Shulong Li, Wansheng Zha, Feng Wang, Qixing Zhu
OBJECTIVE: To study the expression of bradykinin and its receptors B1R and B2R in the kidney immune injury in trichloroethylene-sensitized mouse and discuss the pathogenesis of Dermatitis Medicamentosa-like of TCE (ODMLT). METHODS: On the first days, intradermal injection by 50% TCE and the amount of FCA mixture 100 µl for initial sensitization; on 4, 7, 10 days, painted abdominal skin by 100 µl 50% TCE for three sensitization, on 17, 19 days, painted on the back skin by 100 µl 30% TCE for initial excitation and the last challenge; 24 h before each challenge, PKSI-527+TCE group received intraperitoneal injection by inhibitor PKSI-527 (50 mg/kg); solvent control group treat without TCE and sensitization and excitation reagent the same proportion of olive oil and acetone mixture, blank control group without any treatment...
July 2015: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/26095957/complement-c5a-c5ar-interaction-enhances-mapk-signaling-pathway-activities-to-mediate-renal-injury-in-trichloroethylene-sensitized-balb-c-mice
#20
Jia-xiang Zhang, Wan-sheng Zha, Liang-ping Ye, Feng Wang, Hui Wang, Tong Shen, Chang-hao Wu, Qi-xing Zhu
We have previously shown complement activation as a possible mechanism for trichloroethylene (TCE) sensitization, leading to multi-organ damage including the kidneys. In particular, excessive deposition of C5 and C5b-9-the membrane attack complex, which can generate significant tissue damage, was observed in the kidney tissue after TCE sensitization. The present study tested the hypothesis that anaphylatoxin C5a binding to its receptor C5aR mediates renal injury in TCE-sensitized BALB/c mice. BALB/c mice were sensitized through skin challenge with TCE, with or without pretreatment by the C5aR antagonist W54011...
February 2016: Journal of Applied Toxicology: JAT
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