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Paraquat poisoning

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https://www.readbyqxmd.com/read/28640126/prolonged-methylprednisolone-therapy-after-the-pulse-treatment-for-patients-with-moderate-to-severe-paraquat-poisoning-a-retrospective-analysis
#1
Jie Gao, ShunYi Feng, Jian Wang, SiYuan Yang, Yong Li
This retrospective study aims to evaluate the effect of prolonged methylprednisolone (MP) therapy on the mortality of patients with moderate-to-severe paraquat (PQ) poisoning after the pulse treatment.We performed a retrospective analysis of patients with acute moderate-to-severe PQ poisoning that were admitted to the emergency department from May 2012 to August 2016. Out of 138 patients, 60 were treated with pulse treatment (15 mg kg day MP for 3 days) and 78 were treated with prolonged MP therapy after pulse treatment (15 mg kg day MP for 3 days; afterward, the dosage was reduced in half every 2 days, and the MP therapy was terminated until 0...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28627340/-experimental-study-on-formation-of-neutrophil-extracellular-traps-in-human-peripheral-blood-induced-by-paraquat-in-vitro
#2
Wei Jin, Jian Lu, Hui Xie, Yiqun Jiang, Xiaoxiao Meng, Yong Zhu, Ruilan Wang
OBJECTIVE: To explore whether paraquat (PQ) can induce the formation of neutrophil extracellular traps (NETs) in human peripheral blood. METHODS: Neutrophils were isolated from healthy human peripheral blood, and the cells were identified by hematoxylin-eosin (HE) strain. The cells were treated with different concentrations of PQ [0 (as control), 200, 400, 600, 800, 1 000 and 1 200 μmol/L], and the cell viability was measured by cell proliferation and CCK-8 cytotoxicity detection kit, and the median lethal concentration of PQ was selected...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28627339/-evaluation-of-adsorption-effect-of-activated-charcoal-on-oral-paraquat-poisoning-an-experimental-study-on-large-animal
#3
Baisheng Sun, Yuezhong He, Yuhao Pei, Cong Zhang, Xigang Zhang, Zhan Yang
OBJECTIVE: To study the adsorption effect of activated charcoal suspension on paraquat (PQ) in gastrointestinal tract of beagles exposed to PQ. METHODS: Twenty healthy male beagles were randomly divided into experimental group and control group, with 6 beagles in each group. 20% PQ solution (a dose of 30 mg/kg) was prescribed through stomach for beagles in both groups. After exposure to PQ for 30 minutes, the beagles in experimental group were given activated charcoal suspension (1...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624451/rapamycin-protects-against-paraquat-induced-pulmonary-fibrosis-activation-of-nrf2-signaling-pathway
#4
Yiheng Xu, Wenlin Tai, Xiaoyuan Qu, Wenjuan Wu, ZhenKun Li, Shuhao Deng, Chanthasone Vongphouttha, Zhaoxing Dong
Paraquat (PQ) is a widely used herbicide indeveloping countries worldwide, and pulmonary fibrosis is one of the most typical features of PQ poisoning. The molecular mechanism of PQ toxicity especially how to treat PQ-induced pulmonary fibrosis is still largely unknown. In animal model of pulmonary fibrosis, we used HE staining, western blotting assay and Real-time PCR assay to analyze the effects of rapamycin on the PQ-induced epithelial mesenchymal transition (EMT). We found that PQ induced the pulmonary fibrosis using HE staining and Masson's staining, and up-regulated the activity of HYP and the mRNA expressions of Collagen I and III (COL-1and COL-3) in pulmonary tissues...
June 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28614921/-the-study-of-using-cordyceps-astragalus-salvia-miltiorrhiza-to-treat-acute-lung-injury-induced-by-paraquat-poisoning-in-rats
#5
Q L Li, J L Liu, J R Wang, X D Jian, B T Kan, Z C Zhang
Objective: To study the therapy of cordyceps-astragalus-salvia miltiorrhiza in treating acute lung injury and pulmonary interstitial fibrosis induced by paraquat poisoning. Methods: All 120 adult Wister male rats were randomly assigned to three groups, the paraquat poisoning group (rats were intragastric administration paraquat 50 mg/kg body weight once at the beginning) , the cordyceps-astragalus-salvia miltiorrhiza therapy group (rats were given cordyceps-astragalus-salvia miltiorrhiza 90 mg/kg body weight intragastric administration half an hour after paraquat was given, then the same dose was given once a day) ; control group (rats were intragastric administration with physiological saline) ...
April 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28609698/clinical-screening-of-paraquat-in-plasma-samples-using-capillary-electrophoresis-with-contactless-conductivity-detection-towards-rapid-diagnosis-and-therapeutic-treatment-of-acute-paraquat-poisoning-in-vietnam
#6
Anh Phuong Vu, Thi Ngan Nguyen, Thi Trang Do, Thu Ha Doan, Tran Hung Ha, Thi Thao Ta, Hung Long Nguyen, Peter C Hauser, Thi Anh Huong Nguyen, Thanh Duc Mai
The employment of a purpose-made capillary electrophoresis (CE) instrument with capacitively coupled contactless conductivity detection (C(4)D) as a simple and cost-effective solution for clinical screening of paraquat in plasma samples for early-stage diagnosis of acute herbicide poisoning is reported. Paraquat was determined using an electrolyte composed of 10mM histidine adjusted to pH 4 with acetic acid. A detection limit of 0.5mg/L was achieved. Good agreement between results from CE-C(4)D and the confirmation method (HPLC-UV) was obtained, with relative errors for the two pairs of data better than 20% for 31 samples taken from paraquat-intoxicated patients...
June 10, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28591706/predictors-of-acute-kidney-injury-after-paraquat-intoxication
#7
Cheng-Hao Weng, Hui-Hsiang Chen, Ching-Chih Hu, Wen-Hung Huang, Ching-Wei Hsu, Jen-Fen Fu, Wey-Ran Lin, I-Kwan Wang, Tzung-Hai Yen
Paraquat intoxication is characterized by multi-organ failure, causing substantial mortality and morbidity. Many paraquat patients experience acute kidney injury (AKI), sometimes requiring hemodialysis. We observed 222 paraquat-intoxicated patients between 2000 and 2012, and divided them into AKI (n = 103) and non-AKI (n = 119) groups. The mortality rate was higher for AKI than non-AKI patients (70.1% vs. 40.0%, P < 0.001). Patients with AKI had a longer time to hospital arrival (P = 0.003), lower PaO2 (P = 0...
May 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28541002/effects-of-paraquat-ban-on-herbicide-poisoning-related-mortality
#8
Dong Ryul Ko, Sung Phil Chung, Je Sung You, Soohyung Cho, Yongjin Park, Byeongjo Chun, Jeongmi Moon, Hyun Kim, Yong Hwan Kim, Hyun Jin Kim, Kyung Woo Lee, SangChun Choi, Junseok Park, Jung Soo Park, Seung Whan Kim, Jeong Yeol Seo, Ha Young Park, Su Jin Kim, Hyunggoo Kang, Dae Young Hong, Jung Hwa Hong
PURPOSE: In Korea, registration of paraquat-containing herbicides was canceled in November 2011, and sales thereof were completely banned in November 2012. We evaluated the effect of the paraquat ban on the epidemiology and mortality of herbicide-induced poisoning. MATERIALS AND METHODS: This retrospective study analyzed patients treated for herbicide poisoning at 17 emergency departments in South Korea between January 2010 and December 2014. The overall and paraquat mortality rates were compared pre- and post-ban...
July 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28540206/acute-kidney-injury-from-different-poisonous-substances
#9
Rubina Naqvi
AIM: To report our experience of acute kidney injury (AKI) developed after exposure to poisonous substance. METHODS: Retrospective study where data was collected from case records of patients coming to this institute during January 1990 to May 2016. This institution is a tertiary care center for renal care in the metropolitan city of Karachi, Pakistan. History of ingested substance, symptoms on presentation, basic laboratory tests on arrival, mode of treatment and outcome were recorded from all patients and are presented here...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28533543/time-dependent-haemoperfusion-after-acute-paraquat-poisoning
#10
Hao-Ru Wang, Jian Pan, An-Dong Shang, Yuan-Qiang Lu
Early haemoperfusion (HP) therapy has been found to be very effective in acute paraquat (PQ) poisoning, but the effective rescue window is still uncertain. Demographic data and the type of therapies administered of 621 patients were included as confounding factors in this retrospective study. After receiver operating characteristic curve analysis and intra-group/subgroup analysis, the initiation of glucocorticoid therapy within 3 hrs of exposure with a second treatment given <21 hrs after exposure, HP initiated within 4 hrs of exposure with a second treatment given <20 hrs after exposure, the appearance of pulmonary lesions ≤8 days after exposure and six other variables were used in a multiple analysis...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28514303/continuous-venovenous-hemofiltration-in-the-management-of-paraquat-poisoning-a-meta-analysis-of-randomized-controlled-trials
#11
REVIEW
Guodong Lin, Jianhai Long, Yuan Luo, Yongan Wang, Qiu Zewu
BACKGROUND: Paraquat (PQ) poisoning is a widespread occurrence, especially in underdeveloped areas. The treatment of PQ poisoning has always been difficult, and there is currently no definite effective treatment. Continuous venovenous hemofiltration (CVVH) treatment for PQ poisoning has been widely used in clinical practice; however, its effect remains uncertain. Accordingly, the purpose of this meta-analysis was to evaluate the efficacy of CVVH in the treatment of PQ poisoning. METHODS: We searched for relevant trials using PubMed, Embase, the Cochrane Library, and 3 Chinese databases, the Chinese BioMedical Literature Database, National Knowledge Infrastructure Database, and Wanfang Database...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28508189/the-contribution-of-superoxide-radical-to-cadmium-toxicity-in-e-coli
#12
Milini Thomas, Ludmil Benov
Numerous reports suggest the involvement of oxidative stress in cadmium toxicity, but the nature of the reactive species and the mechanism of Cd-induced oxidative damage are not clear. In this study, E. coli mutants were used to investigate mechanisms of Cd toxicity. Effects of Cd on metabolic activity, production of superoxide radical by the respiratory chain, and induction of enzymes controlled by the soxRS regulon were investigated. In E. coli, the soxRS regulon controls defense against O2·(-)and univalent oxidants...
May 15, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28501785/experimental-study-of-sucralfate-intervention-for-paraquat-poisoning-in-rats
#13
Zhu Junbo, Yu Yongtao, Li Hongbo, Zheng Fenshuang, Lin Ruyun, Yang Chun'ai
OBJECTIVE: This study explored the effects of sucralfate intervention as a novel treatment for paraquat (PQ) poisoning in Sprague-Dawley (SD) rats. METHODS: After PQ poisoning, the SD rats were randomly divided into the PQ control group (treated with normal saline), the sodium bicarbonate (SB) treatment group, and the sucralfate (LTL) treatment group. Then, the rats were administered normal saline, sodium bicarbonate solution, or sucralfate suspension as an intervention by gastric lavage...
April 26, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28492119/paraquat-poisoning-acute-lung-injury-a-missed-diagnosis
#14
Sipho D Ntshalintshali, Thandekile C Manzini
Paraquat is a herbicide of great toxicological importance because it is associated with high mortality rates, mainly due to respiratory failure. We report the case of a 28-year-old man admitted to the casualty department at Ngwelezana Hospital, Empangeni, KwaZulu-Natal, South Africa, with a history of vomiting and abdominal pain after ingestion of ~100 mL of an unknown substance, later identified as paraquat, together with an unknown amount of alcohol, in a suicide attempt. He developed respiratory distress associated with lung parenchymal infiltrates that required ventilatory support and later a spontaneous pneumothorax, and died in the intensive care unit...
April 25, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28480221/liver-x-receptor-agonist-to901317-attenuates-paraquat-induced-acute-lung-injury-through-inhibition-of-nf-%C3%AE%C2%BAb-and-jnk-p38-mapk-signal-pathways
#15
Xiao Hu, Haitao Shen, Yu Wang, Min Zhao
Paraquat (PQ) is a widely used herbicide with extremely high poisoning mortality mostly from acute lung injury (ALI) or progressive pulmonary fibrosis. Toxicity mechanisms remain unclear, but a redox cycling process that generates reactive oxygen species (ROS) is involved, as are inflammation and cell apoptosis. We established an ALI mouse model by intraperitoneal injection of PQ (28 mg/kg) and then investigated the effects of a potent liver X receptor (LXR) agonist, TO901317 (5 or 20 mg/kg), injected intraperitoneally 30 min after PQ administration...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28480199/a-rare-case-of-epilepsy-and-acute-pancreatitis-induced-by-severe-paraquat-poisoning
#16
Hongxia Dong, Xiaobo Peng, Zewu Qiu
Paraquat can lead to injury of multiple organs. As there is no specific treatment for paraquat poisoning, it represents a serious clinical problem. Antioxidants are required to treat oxidative stress in paraquat poisoning and paraquat-induced injury. In this study, we report on successful treatment of a rare case of epilepsy and acute pancreatitis caused by paraquat poisoning. A 29-year-old woman at our hospital presented with a 13-day history of nausea and vomiting after ingesting 20 mL of paraquat (20% W/V)...
April 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28474156/jnk-inhibitor-sp600125-attenuates-paraquat-induced-acute-lung-injury-an-in-vivo-and-in-vitro-study
#17
Haitao Shen, Na Wu, Yu Wang, Xinfei Han, Qiang Zheng, Xue Cai, Honglei Zhang, Min Zhao
Acute lung injury (ALI) is a major complication soon after paraquat poisoning and rapidly progresses with high mortality. However, the specific mechanism underlying paraquat-induced ALI is still unclear. In this study, the mechanism underlying the protective effects of SP600125 on paraquat-induced ALI was investigated according to oxidative stress, inflammation, and apoptosis. The rats were randomly assigned into the control group (CON), the paraquat poisoning group (PQ), and the PQ + SP600125 group (SP). A549 cells were divided into the Con group, Pq group, and Sp group...
May 4, 2017: Inflammation
https://www.readbyqxmd.com/read/28424456/paraquat-poisoning-induced-pulmonary-epithelial-mesenchymal-transition-through-notch1-pathway
#18
Tiegang Li, Xiangming Yang, Shiyu Xin, Yan Cao, Nana Wang
Progressive pulmonary fibrosis is the most characteristic feature of subacute PQ poisoning. Epithelial-to-mesenchymal transition (EMT) is reported to be involved in the pulmonary fibrosis after PQ exposure. Recent evidence suggested Notch signaling is required for EMT. In this study, we investigated whether Notch1 and TGF-β1/Smad3 signaling was involved in EMT caused by PQ. It is demonstrated that A549 cells underwent EMT after treated with PQ at dose of 300 μmol/L for 6 days, charactered by increasing expression of mesenchymal marker α-SMA and decreasing expression of epithelial marker E-cadherin...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28384906/golden-hours-in-severe-paraquat-poisoning-the-role-of-early-haemoperfusion-therapy
#19
Raghavendra Rao, Rama Bhat, Swathi Pathadka, Sravan Kumar Chenji, Savio Dsouza
INTRODUCTION: Paraquat is a commonly ingested poison especially in Southern India. There is no antidote for paraquat poison and consumption is often fatal. The usual cause of death is either acute lung injury or multi-organ failure. AIM: To evaluate the role of early haemoperfusion as a therapy in paraquat poisoned patients. MATERIALS AND METHODS: This study was a retrospective analysis of patients admitted to a Tertiary Medical College Hospital between January 2012 and December 2015 with history of paraquat consumption, comparing outcomes in those who received only gastric lavage and symptomatic treatment with those who received haemoperfusion as a therapy...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28377603/hmgb1-tlr4-il23-il17a-axis-promotes-paraquat-induced-acute-lung-injury-by-mediating-neutrophil-infiltration-in-mice
#20
Bailing Yan, Feng Chen, Lijun Xu, Jihong Xing, Xuefu Wang
Paraquat is a poisoning herbicide that primarily targets lung, leading to severe acute lung injury characterized by extensive neutrophil infiltration. However, the mechanisms underlying the neutrophil infiltration is not clear. In this study, we demonstrated the significance of the signaling cascade from high-mobility group box 1 (HMGB1), to Toll-like receptor 4 (TLR4), interleukin-23 (IL-23), and lastly to IL-17A during the paraquat-induced neutrophil infiltration and the subsequent lung injury in mice. Paraquat challenge significantly elevated serum levels of IL-17A and IL-23, the percentage of IL-17A-producing γδT cells in the lung, and the level of HMGB1 in bronchoalveolar lavage fluid...
April 4, 2017: Scientific Reports
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