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The Prognosis of Glyphosate herbicide intoxicated patients according to their salt types
Min Gyu Jeong, Kyoung Tak Keum, Seongjun Ahn, Yong Hwan Kim, Jun Ho Lee, Kwang Won Cho, Seong Youn Hwang, Dong Woo Lee
J Korean Soc Clin Toxicol. 2021;19(2):83-92.   Published online December 31, 2021
DOI: https://doi.org/10.22537/jksct.2021.19.2.83
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AbstractAbstract PDF
Purpose: Glyphosate herbicide (GH) is a widely used herbicide and has been associated with significant mortality as poisoned cases increases. One of the reasons for high toxicity is thought to be toxic effect of its ingredient with glyphosate. This study was designed to determine differences in the clinical course with the salt-type contained in GH. Methods: This was a retrospective study conducted at a single hospital between January 2013 and December 2017. We enrolled GH-poisoned patients visited the emergency department. According to salt-type, patients were divided into 4 groups: isopropylamine (IPA), ammonium (Am), potassium (Po), and mixed salts (Mi) groups. The demographics, laboratory variables, complications, and their mortality were analyzed to determine clinical differences associated with each salt-type. Addtionally, we subdivided patients into survivor and non-survivor groups for investigating predictive factors for the mortality. Results: Total of 348 GH-poisoned patients were divided as follows: IPA 248, Am 41, Po 10, and Mi 49 patients. There was no difference in demographic or underlying disease history, but systolic blood pressure (SBP) was low in Po group. The ratio of intentional ingestion was higher in Po and Mi groups. Metabolic acidosis and relatively high lactate level were presented in Po group. As the primary outcome, the mortality rates were as follows: IPA, 26 (10.5%); Am, 2 (4.9%); Po, 1 (10%); and Mi, 1 (2%). There was no statistically significant difference in the mortality and the incidence of complications. Additionally, age, low SBP, low pH, corrected QT (QTc) prolongation, and respiratory failure requiring mechanical ventilation were analyzed as independent predictors for mortality in a regression analysis. Conclusion: There was no statistical difference in their complications and the mortality across the GH-salt groups in this study.

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Citations to this article as recorded by  
  • Association between continuous renal replacement therapy and mortality after acute herbicide (glyphosate and/or glufosinate) intoxication: propensity score matching approach
    Seung Woo Lee, Won-joon Jeong, Seung Ryu, Yongchul Cho, Yeonho You, Jung Soo Park, Changshin Kang, Hong Joon Ahn, So Young Jeon, Jinwoong Lee
    Journal of The Korean Society of Clinical Toxicology.2023; 21(1): 17.     CrossRef
Initial Serum Ammonia as a Predictor of Mortality in Patients with Acute Glufosinate Ammonium Herbicide Poisoning
Eun Na Ko, Dong Hoon Kim, Soo Hoon Lee, Jin Hee Jeong, Sang Bong Lee, Aejin Sung, Ja Hyoen Suh, Changwoo Kang
J Korean Soc Clin Toxicol. 2020;18(2):136-140.   Published online December 31, 2020
DOI: https://doi.org/10.22537/jksct.2020.18.2.136
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  • 1 Citations
AbstractAbstract PDF
Purpose: The association of the initial serum ammonia level with in-hospital mortality in patients with acute glufosinate-ammonium herbicide poisoning was studied. Methods: This retrospective cohort study was conducted between March 2012 and August 2019 in the emergency department after glufosinate-ammonium herbicide poisoning. Survivors and non-survivors were analyzed using a Mann-Whitney U test and Fisher's exact test. Multivariate logistic regression analysis was performed to determine the independent risk factors for mortality. Results: One hundred and six patients were enrolled; 11 died, yielding a mortality of 10.4%. The serum bicarbonate level was significantly lower in the non-survival group than the survival group. Age, serum ammonia, blood urea nitrogen, creatinine levels, SOFA score, and APACHE II score were significantly higher in the non-survival group than the survival group. Age, serum ammonia, and creatinine level were independent risk factors for mortality in multivariate logistic regression analysis. Conclusion: The initial serum ammonia level is associated with mortality in patients with acute glufosinate herbicide poisoning.

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  • Utility of the APACHE II score as a neurological prognostic factor for glufosinate-intoxicated patients with alert mental status
    Rok Lee, Tae Yong Shin, Hyung Jun Moon, Hyun Jung Lee, Dongkil Jeong, Dongwook Lee, Sun In Hong, Hyun Joon Kim
    Journal of The Korean Society of Clinical Toxicology.2023; 21(2): 135.     CrossRef
A Study of Predicting the Severity Following Glufosinate Ammonium Containing Herbicide Poisoning Experienced in Single Emergency Medical Institution
Doo Sung Lee, Kyoung Ho Choi
J Korean Soc Clin Toxicol. 2019;17(1):7-13.   Published online June 30, 2019
DOI: https://doi.org/10.22537/jksct.2019.17.1.7
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Purpose: Owing to the increased agricultural use of the herbicide glufosinate ammonium (GLA), the incidence of GLA poisoning has recently increased. Therefore, we investigated the possible predictive factors associated with severe complications following GLA poisoning. Methods: A retrospective analysis of medical records was conducted based on 76 patients who had visited our regional emergency medical center with GLA poisoning from 2006 to 2017. Severe complications were defined as respiratory failure requiring intubation, systolic blood pressure less than 90 mmHg, Glasgow Coma Scale (GCS) less than 8, and presence of seizure. Results: Age, ingested amount and ingested amount per weight were significantly greater in the severe group (p<0.001). PSS grade 2 or higher was more common in the severe group (p<0.001), and In addition, the APACHE II score was significantly higher in the severe group (p<0.001), as were the SOFA scores (p=0.002). Serum ammonia levels were significantly higher in the severe group (p=0.007), while MDRD-GFR was smaller in the severe group (p=0.002). The spot urine protein levels were significantly higher in the severe group (p=0.005), as was the urine protein to creatinine ratio (p=0.001). Upon multivariate analysis, the amount ingested per weight and PSS grade 2 or higher were identified as significant predictors. Conclusion: Our study showed that MDRD-GFR was significantly lower in the severe group after GLA poisoning. PSS grade 2 or higher and ingested amount per weight may be useful to evaluate the severity of complications after GLA poisoning.
Relationship between Serum Neuron Specific Enolase Level and Seizure in Patients with Acute Glufosinate Ammonium Poisoning
Gyo Jin An, Yoonsuk Lee, Yong Sung Chan, Hyun Kim
J Korean Soc Clin Toxicol. 2018;16(1):49-56.   Published online June 30, 2018
DOI: https://doi.org/10.22537/jksct.2018.16.1.49
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AbstractAbstract PDF
Purpose: Glufosinate ammonium poisoning can cause seizures, even after a symptom-free period. This study was conducted to evaluate the relationship between serum neuron specific enolase (NSE) level and the occurrence of seizures in patients with acute glufosinate ammonium poisoning. Methods: For this retrospective observational study, data from patients diagnosed with acute glufosinate ammonium poisoning were collected between January 2016 and June 2016. Serum NSE was measured within 2 hours of arrival at the emergency department. The patients were divided into a seizure group and a non-seizure group. Results: The seizure group included eight of the 15 total patients (53.3%). The serum NSE level was significantly higher in the seizure group than in the non-seizure group ($32.4{pm}11.9ng/mL$ vs. $19.5{pm}5ng/mL$, p=0.019). The amount of glufosinate ingested and initial and peak serum ammonia levels were significantly higher in the seizure group than in the non-seizure group. There was no significant difference in the area under the curve of the serum NSE level or the initial and peak serum ammonia levels in terms of predicting the occurrence of seizures. Conclusion: In acute glufosinate poisoning, initial serum NSE levels may help in prediction of seizures.
The Usefulness of Serum Lipid Concentration as a Predictor of Convulsion in Patients with Glufosinate Ammonium Poisoning
Hyun Do Lee, Kyung Hoon Sun, Seong Jung Kim
J Korean Soc Clin Toxicol. 2017;15(1):40-46.   Published online June 30, 2017
DOI: https://doi.org/10.22537/jksct.2017.15.1.40
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AbstractAbstract PDF
Purpose: Glufosinate ammonium (GA; phosphinothricin) can induce neurological complications such as altered mental status, amnesia, and convulsions. This study was conducted to evaluate whether blood lipid profiles can help predict convulsions in patients with GA poisoning. Methods: This study was a retrospective review of data acquired at a tertiary academic university hospital from March 2014 to July 2016. Independent t-test, Mann-Whitney test and Analysis of covariance (ANCOVA) of demographic and laboratory findings of 50 patients with GA poisoning were performed to identify correlations of general characteristics and laboratory findings, including blood lipid profiles of GA-poisoned patients between with and without convulsions. Results: Convulsion as a GA complication showed a significant association with poison volume, age, white blood cell count, and creatine phosphokinase (CK), albumin, lactate dehydrogenase (LDH), low-density lipoprotein (LDL), and high-density lipoprotein (HDL) content in blood according to an independent t-test and Mann-Whitney test. However, ANCOVA demonstrated significant association with LDL and triglyceride. Conclusion: Blood lipid profiles, especially serum LDL and triglyceride, were useful in predicting convulsions in patients with GA poisoning.
A Case of anterograde amnesia with hippocampal lesions following glufosinate intoxication
Seung-Hwan Seol, Hyeon-Soo Park, Jung-Hwan Ahn, Hee-Young Park, Phil-Hyu Lee, Gi-Woon Kim
J Korean Soc Clin Toxicol. 2006;4(1):61-64.   Published online June 30, 2006
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AbstractAbstract PDF
Glufosinate ammonium (GLA), a phosphinic acid derivate of glutamate, is a broad-spectrum contact herbicide. It structurally resembles glutamate, a typical excitatory amino acid in the central nervous system. In korea, the ingestion of GLA for suicidal attempt or accidental event has increased. The neurological complication of GLA intoxication are characterized by loss of consciousness, convulsion, or memory impairment. But, the exact mechanism of GLA toxicity is yet unknown. This report is about a patient with GLA intoxication who showed anterograde amnesia with selective bilateral hip-pocampal lesions supported GLA intoxication with literature reviews supported.
A Case of Acute Glufosinate Ammonium ($BASTA^{(R)}$) Intoxication Associated with Various Neurological Abnormalities
Jin Hui Paik, Jun Sig Kim, Hyeon Gyu Yi, Hyun Joo Park, Choong-Kun Ha, Hyung-Keun Roh
J Korean Soc Clin Toxicol. 2005;3(2):103-106.   Published online December 31, 2005
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AbstractAbstract PDF
BASTA is an herbicide which contains glufosinate ammonium as a main component with an anionic surfactant, polyoxyethylene alkylether sulfate, and nonselectively inhibits glutamine synthetase. It became a wildly used herbicide in Korea and its intoxication is now increasing. A 42-year old woman ingested about 300ml of BASTA in a suicide attempt. She showed unconsciousness and respiratory distress in the beginning, and later developed multiple generalized convulsions, low blood pressure, fever and diabetes insipidus. Although she became alert 12 days after the ingestion, she showed retrograde amnesia for a period of about recent 10 years. A neuropsychological test on day 22 revealed frontal lobe dysfunction, visual memory disturbance and slight decrease in visuospatial function. All these neurological abnormalities that might occur due to glufosinate ammonium were almost improved in the follow-up test performed a month later.
A Case of Acute Intoxication with Glyphosate and Oxyfluorfen Containing Powder Herbicide ($Daejangun^{(R)}$)
Seung Hee Lee, Kum Ho Yi, Sung-Soo Yoo, Heung-Keun Roh
J Korean Soc Clin Toxicol. 2005;3(2):110-113.   Published online December 31, 2005
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AbstractAbstract PDF
Glyphosate containing herbicides are an alternative to paraquat and have been widely used with increasing frequency in suicide attempts throughout Asia. It is an organophosphorus compound that is not a cholinesterase inhibitor. Daejangun powder consists of glyphosate ammonium, surfactant and another herbicide, oxyfluorfen. A 60-year-old man ingested about 300 g of Daejangun powder with 500 ml of water in a suicide attempt. He was brought to emergency room 6 hours after the ingestion and showed severe metabolic acidosis (pH 6.75), marked leukocytosis (WBC 35,800/$mm^3$), hypoglycemia (glucose 13 mg/dL) and increased liver enzymes (AST/ALT 1,683/418 IU/L). Later he developed aspiration pneumonia, acute renal failure and hyperchloremic acidosis. Upper gastrointestinal endoscopy which performed 5 days after the ingestion revealed corrosive injuries (grade 1) in both esophagus and stomach. However, intensive treatment with supportive measures improved the abnormal findings almost completely 4 weeks after the ingestion.

JKSCT : Journal of The Korean Society of Clinical Toxicology