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Paraquat poisoning

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https://www.readbyqxmd.com/read/29338157/imbalance-of-th17-treg-in-the-pathogenesis-of-mice-with-paraquat-induced-acute-lung-injury
#1
Xia Yang, Jing-Hong Zhang, Jian-Feng Zhang, Hua Lin, Wei Chen, Li Xiang, Chao-Qian Li
Recent studies suggest that imbalances in the ratios of CD4+ T helper cell subsets, T helper-17 (Th17) and regulatory T (Treg) cells play a crucial role in the pathogenesis of acute lung injury (ALI). However, studies of the imbalance of Th17/Treg in paraquat (PQ)-induced ALI have not been reported. Therefore, we investigated whether the ratio of Th17/Treg cells in a mouse model of PQ-induced ALI contributes to pathogenesis of ALI. Male Kunming mice were randomly treated with saline (control group) or PQ (PQ-poisoned (PQP) group); mice were sacrificed at either 12 hours (PQP-12h) or 24 hours (PQP-24h and control) post-treatment...
December 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29294530/-a-case-care-of-paraquat-poisoning-concurrent-epilepsy
#2
(no author information available yet)
No abstract text is available yet for this article.
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29294519/-evaluation-of-the-effect-of-early-goal-directed-therapy-in-patients-with-paraquat-poisoning
#3
(no author information available yet)
No abstract text is available yet for this article.
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29188770/the-hepatoprotective-effects-of-aquatic-extract-of-levisticum-officinale-against-paraquat-hepatocyte-toxicity
#4
Hasan Afarnegan, Ali Shahraki, Jafar Shahraki
Paraquat is extensively used as a strong nitrogen-based herbicide for controlling weeds in agriculture. This herbicide is extremely toxic to humans and induces multiorgan failure due to accumulation in the cells. So far, many instances of fatal poisoning have been reported. Paraquat is metabolized primarily in the liver. Accordingly, the effects of aquatic Levisticum officinale extract on biochemical factors and oxidative status were evaluated in hepatocytes exposed to paraquat in this study. The results showed that paraquat-induced hepatocyte destruction is mediated by reactive oxygen species (ROS) production...
November 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29151425/-paraquat-poisoning-mechanism-and-its-clinical-treatment-progress
#5
Baisheng Sun, Yuezhong He
Paraquat (PQ) as a kind of sterile and herbicides, has effects of contact-kill and systemic action, which can be absorbed quickly by green plants and make them wither and die. Therefore, it is widely used in the agricultural production and occupies a large part in our country's pesticide market. PQ poisoning has become one of the most common pesticide poisoning in our country. PQ can be passivated when combining with soil, but it has great toxicity for human. There are still no specific antidotes for PQ poisoning at home and abroad, and the death rate of PQ oral poisoning is up to 95%...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29151411/-protective-effect-of-thalidomide-on-ali-induced-by-paraquat-poisoning-in-rats-and-its-mechanism
#6
Tao Liu, Yuan Xie, Mengtong Xu, Fenshuang Zheng
OBJECTIVE: To investigate the protective effect of thalidomide on acute lung injury (ALI) induced by paraquat (PQ) poisoning in rats and its possible mechanism. METHODS: Sixty SPF Wistar rats were randomly divided into six groups with 10 rats in each group. The rat model of PQ poisoning was reproduced by intraperitoneal injection of PQ solution 20 mg/kg (PQ model group), and the rats were treated by intraperitoneal injection of gradient thalidomide (50, 100, 200 mg/kg treatment groups) 30 minutes later continuously for 3 days...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29151410/-effects-of-curcumin-on-pulmonary-fibrosis-and-functions-of-paraquat-challenged-rats
#7
Honggang Chen, Rongjia Yang, Yan Tang, Jun Xu, Youfan Feng, Shijie Liu, Shikui Zhang, Lijun Hou
OBJECTIVE: To observe the effects of curcumin on pulmonary fibrosis and functions on paraquat (PQ)-challenged rats, and investigate the possible mechanism. METHODS: 108 SPF Wistar rats were divided into three groups according to random number sheet: normal saline (NS) control group, PQ model group and curcumin-treatment group. The rats in each group were subdivided into three subgroups according to different time points (3, 7, 14 days), with 12 rats in each subgroup...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29151409/-curative-effect-of-paraquat-detoxification-recipe-combined-with-continuous-hemoperfusion-in-the-treatment-of-patients-with-app-and-clinical-value-of-presepsin
#8
Weizhan Wang, Jing Li, Baoyue Zhu, Xun Gao, Qingmian Xiao, Hongna Qi, Yanqiao Ye, Yongjian Liu, Yongyan Han, Gongying Ma, Pu Wang
OBJECTIVE: To investigate the clinical effect of paraquat (PQ) detoxification recipe combined with continuous hemoperfusion (HP) in the treatment of patients with acute paraquat poisoning (APP) and clinical significance of soluble CD14 subtype (sCD14-st, Presepsin). METHODS: A prospective randomized controlled trial was conducted. 152 patients with moderate APP admitted to Department of Emergency Medicine of Harrison International Peace Hospital Affiliated to Hebei Medical University from July 2013 to June 2017 were enrolled, and they were randomly divided into three groups...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29151408/-protective-effect-of-5-aminosalicylic-acid-on-the-kidney-of-paraquat-poisoning-rats-by-nrf2-are-signal-pathway
#9
Yu Wang, Manhong Zhou, Yuanlan Lu, Anyong Yu, Jianguo Li
OBJECTIVE: To investigate the protective effect of 5-aminosalicylic acid (5-ASA) on renal injury poisoned by paraquat (PQ) in rats and its mechanism. METHODS: Twenty-four healthy clean male Sprague-Dawley (SD) rats were randomly divided into four groups: normal saline (NS) control group, 5-ASA control group, PQ model group and 5-ASA treatment group, with 6 rats in each group. The rat model of PQ poisoning was reproduced by intraperitoneal injection of 2% PQ solution 20 mg/kg, and the same volume of NS was given in NS control group and 5-ASA control group...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29116999/treatment-outcome-of-combined-continuous-venovenous-hemofiltration-and-hemoperfusion-in-acute-paraquat-poisoning-a-prospective-controlled-trial
#10
COMPARATIVE STUDY
Changbin Li, Dayong Hu, Wen Xue, Xinhua Li, Zhen Wang, Zisheng Ai, Yaxiang Song, Xinying Liu, Jiafeng Cheng, Shuling Fan, Limin Zhao, Liya Wang, Chandra Mohan, Ai Peng
OBJECTIVES: To investigate whether combined continuous venovenous hemofiltration and hemoperfusion among paraquat-poisoned patients would improve survival. DESIGN: Prospective, controlled interventional study over 4 years. SETTING: Single, tertiary, academic medical center. PATIENTS: We recruited patients admitted to Shanghai Tenth People's Hospital within 48 hours after paraquat ingestion. Exclusions were under 14 years old, ingestion of paraquat with other toxicants, pregnant, a history of chronic pulmonary disease, psychosis, hyperthyroidism, or diabetes with impaired liver or renal function...
January 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29115090/urine-methyl-hippuric-acid-levels-in-acute-pesticide-poisoning-estimation-of-ingested-xylene-volume-and-association-with-clinical-outcome-parameters
#11
Chi Young Choi, NamJun Cho, Su Yeon Park, Samel Park, Hyo Wook Gil, Sae Yong Hong
To determine the relationship between the oral ingestion volume of xylene and methyl hippuric acid (MHA) in urine, we measured MHA in 11 patients whose ingested xylene volume was identified. The best-fit equation between urine MHA and ingested amount of xylene was as follows: y (ingested amount of xylene, mL/kg) = -0.052x² + 0.756x (x = MHA in urine in g/g creatinine). From this equation, we estimated the ingested xylene volume in 194 patients who had ingested pesticide of which the formulation was not available...
December 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29104250/a-pilot-study-in-cameroon-to-understand-safe-uses-of-pesticides-in-agriculture-risk-factors-for-farmers-exposure-and-management-of-accidental-cases
#12
Guy Bertrand Pouokam, William Lemnyuy Album, Alice S Ndikontar, Mohamed El Hady Sidatt
Chemical pesticides are widely used in Cameroon for agricultural production. In 2015, more than 600 pesticide products were approved for use in various foodstuffs. Much misuse of these chemicals by farmers has been documented in rural and urban settings. This pilot study aims to contribute to the improvement of the health of the population and the environmental preservation by identifying pesticide-poisoning cases, the most incriminated products and critical risk factors of exposure. Questionnaires were administered to pesticide vendors, farmers and health personnel, and observations made on farmers' practices at their work places...
November 1, 2017: Toxics
https://www.readbyqxmd.com/read/29099997/early-metabolome-profiling-and-prognostic-value-in-paraquat-poisoned-patients-based-on-ultra-performance-liquid-chromatography-coupled-to-quadrupole-time-of-flight-mass-spectrometry
#13
Lufeng Hu, Guangliang Hong, Yahui Tang, Xianqin Wang, Congcong Wen, Feiyan Lin, Zhongqiu Lu
Paraquat (PQ) has caused countless deaths throughout the world. There remains no effective treatment for PQ poisoning. Here we study the blood metabolome of PQ-poisoned patient using ultra performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UPLC/Q-TOF MS). Patients were divided into groups according blood PQ concentration. Healthy subjects served as controls. Metabolic features were statistically analyzed using multivariate pattern-recognition techniques to identify the most important metabolites...
November 3, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/29098875/high-dose-immunosuppression-to-prevent-death-after-paraquat-self-poisoning-a-randomised-controlled-trial
#14
Indika Gawarammana, Nicholas A Buckley, Fahim Mohamed, Kamal Naser, K Jeganathan, P L Ariyananada, Klintean Wunnapuk, Timothy A Dobbins, John A Tomenson, Martin F Wilks, Michael Eddleston, Andrew H Dawson
CONTEXT: Intentional self-poisoning with the herbicide paraquat has a very high case-fatality and is a major problem in rural Asia and Pacific. OBJECTIVES: We aimed to determine whether the addition of immunosuppression to supportive care offers benefit in resource poor Asian district hospitals. MATERIALS AND METHODS: We performed a randomised placebo-controlled trial comparing immunosuppression (intravenous cyclophosphamide up to 1 g/day for two days and methylprednisolone 1 g/day for three days, and then oral dexamethasone 8 mg three-times-a-day for 14 days) with saline and placebo tablets, in addition to standard care, in patients with acute paraquat self-poisoning admitted to six Sri Lankan hospitals between 1st March 2007 and 15th November 2010...
November 3, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/29096617/effect-of-prohibiting-the-use-of-paraquat-on-pesticide-associated-mortality
#15
Jinyong Kim, Sang Do Shin, Seungmin Jeong, Gil Joon Suh, Young Ho Kwak
BACKGROUND: Paraquat is associated with a high rate of fatalities in acute poisoning. This study aimed to examine the association between the national public health policy that banned the use of paraquat and the incidence of pesticide-associated mortality. METHODS: All external causes of death from 2009 to 2013 of Korea were analyzed. The intervention was a national public health policy that annulled the authorized use (2011) and banned the purchase of paraquat (2012)...
November 2, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29082819/prognostic-comparison-of-goal-oriented-hemoperfusion-and-routine-hemoperfusion-combined-with-continuous-venovenous-hemofiltration-for-paraquat-poisoning
#16
Xuming Zhao, Yan Xiao, Jianliang Zhu, Zhiping Xu, Lijun Liu, Jinsong Zhang
Objective To investigate the impact of goal-oriented hemoperfusion (HP) with monitoring of the paraquat concentration on the prognosis of patients with acute paraquat poisoning. Methods This prospective observational study involved patients with acute paraquat poisoning admitted from March 2012 to September 2015. The patients received either goal-oriented or routine HP. All other treatments were the same between the two groups. The primary endpoint was 28-day mortality after poisoning. The secondary endpoints were the incidence of organ dysfunction within 7 days and 7-day mortality...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29081107/-a-case-report-of-acute-severe-paraquat-poisoning-clinical-cure
#17
H L Liu, X D Jian, D X Wang
No abstract text is available yet for this article.
July 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29081105/-experimental-study-scavenging-effect-of-paraquat-by-hemoperfusion
#18
Y H Pei, Y Z He, X G Zhang, B S Sun
Objective: To determine the scavenging effect and the change of metabolism of paraquat (PQ) using hemoperfusion (HP) once and twice within 12 hours after intoxication and explore the better scheme of HP. Methods: 18 beagles were randomly divided into 3 groups. Single HP group, Double HP group and Control group. Peripheral veins blood was collected at different times within 48 hours after exposure in each group. Toxin concentration was measured, analyzed and compared among 3 groups. Results: 6 hours after exposure, Single HP group and Double HP group has finished the first HP treatment, and the concentration of PQ was lower than that of the control group, the difference was statistically significant (P<0...
July 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29049326/a-new-machine-learning-method-to-prognosticate-paraquat-poisoned-patients-by-combining-coagulation-liver-and-kidney-indices
#19
Lufeng Hu, Huaizhong Li, Zhennao Cai, Feiyan Lin, Guangliang Hong, Huiling Chen, Zhongqiu Lu
The prognosis of paraquat (PQ) poisoning is highly correlated to plasma PQ concentration, which has been identified as the most important index in PQ poisoning. This study investigated the predictive value of coagulation, liver, and kidney indices in prognosticating PQ-poisoning patients, when aligned with plasma PQ concentrations. Coagulation, liver, and kidney indices were first analyzed by variance analysis, receiver operating characteristic curves, and Fisher discriminant analysis. Then, a new, intelligent, machine learning-based system was established to effectively provide prognostic analysis of PQ-poisoning patients based on a combination of the aforementioned indices...
2017: PloS One
https://www.readbyqxmd.com/read/29026307/porous-se-sio2-nanospheres-treated-paraquat-induced-acute-lung-injury-by-resisting-oxidative-stress
#20
Yong Zhu, Guoying Deng, Anqi Ji, Jiayi Yao, Xiaoxiao Meng, Jinfeng Wang, Qian Wang, Qiugen Wang, Ruilan Wang
Acute paraquat (PQ) poisoning is one of the most common forms of pesticide poisoning. Oxidative stress and inflammation are thought to be important mechanisms in PQ-induced acute lung injury (ALI). Selenium (Se) can scavenge intracellular free radicals directly or indirectly. In this study, we investigated whether porous Se@SiO2 nanospheres could alleviate oxidative stress and inflammation in PQ-induced ALI. Male Sprague Dawley rats and RLE-6TN cells were used in this study. Rats were categorized into 3 groups: control (n=6), PQ (n=18), and PQ + Se@SiO2 (n=18)...
2017: International Journal of Nanomedicine
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