1
|
Tao X, Mao Y, Alam S, Wang A, Qi X, Zheng S, Jiang C, Chen SY, Lu H. Sensitive fluorescence detection of glyphosate and glufosinate ammonium pesticides by purine-hydrazone-Cu 2+ complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124226. [PMID: 38560950 DOI: 10.1016/j.saa.2024.124226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
Organophosphorus pesticides play an important role as broad-spectrum inactivating herbicides in agriculture. Developing a method for rapid and efficient organophosphorus pesticides detection is still urgent due to the increasing concern on food safety. An organo-probe (ZDA), synthesized by purine hydrazone derivative and 2,2'-dipyridylamine derivative, was applied in sensitive recognition of Cu2+ with detection limit of 300 nM. Mechanism study via density functional theory (DFT) and job's plot experiment revealed that ZDA and Cu2+ ions form a 1:2 complex quenching the fluorescence emission. Moreover, this fluorescent complex ZDA-Cu2+ was applicable for detecting glyphosate and glufosinate ammonium following fluorescence enhancement mechanism, with detection limits of 11.26 nM and 11.5 nM, respectively. Meanwhile, ZDA-Cu2+ was effective and sensitive when it is used for pesticide detection, reaching the maximum value and stabilizing in 1 min. Finally, the ZDA-Cu2+ probe could also be tolerated in cell assay environment, implying potential bio-application.
Collapse
Affiliation(s)
- Xuanzuo Tao
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
| | - Yanxia Mao
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
| | - Said Alam
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
| | - Anguan Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
| | - Xinyu Qi
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
| | - Chunhui Jiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China.
| | - Shu-Yang Chen
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
| | - Hongfei Lu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China.
| |
Collapse
|
2
|
Chen J, Cao Y, Yuan Q, Wang R, Chai J, Chen C, Fang J. Acetamiprid and pyridaben poisoning: A case report. Toxicol Rep 2023; 11:212-215. [PMID: 37727219 PMCID: PMC10505946 DOI: 10.1016/j.toxrep.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 09/21/2023] Open
Abstract
Background The agricultural industry has experienced beneficial outcomes by implementing contemporary synthetic pesticides, specifically, the mixture of acetamiprid and pyridaben. However, concerns regarding public health have arisen due to the increased number of suicides caused by insecticide poisoning. Nevertheless, limited reports of human exposure to these pesticides have reported various adverse clinical effects. In this study, we present the case of an individual who consumed the acetamiprid and pyridaben mixture for suicidal purposes, and subsequently developed central nervous system depression, hyperlactacidemia, and metabolic acid poisoning, which thus required clinical management. Case report A 74-year-old woman was transported to our hospital after ingesting a combination of 30 mL of acetamiprid 5 % and pyridaben 5 %. The patient displayed nausea and vomiting symptoms, followed by confusion. An arterial blood gas analysis revealed metabolic acidosis and hyperlactacidemia. The patient was carefully monitored for vital signs and treated with gastric lavage, purgation, and proton pump inhibitors to reduce gastric acid, blood volume, and electrolyte resuscitation. In addition, the patient received 24 h of hemoperfusion (HP) and continuous renal replacement therapy (CRRT). As a result of these interventions, the patient had a speedy recovery and was discharged 10 days later. Conclusion This case report provided the details of a rare instance of acute poisoning in humans resulting from exposure to newer synthetic pesticides, specifically acetamiprid and pyridaben. The report described the clinical manifestations and effective supportive therapy management. Future clinicians may find the results of this report valuable for identifying clinical symptoms and treating acute poisoning caused by newer synthetic pesticides.
Collapse
Affiliation(s)
- Juan Chen
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| | - Yang Cao
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| | - Qionghui Yuan
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| | - Ren Wang
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| | - JiangJie Chai
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| | - Chensong Chen
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| | - Junjie Fang
- Department of Critical Care Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, 291 Donggu Road, Dandong Street, Xiangshan, Ningbo, Zhejiang 315700, China
| |
Collapse
|
3
|
Dorooshi G, Samsamshariat S, Gheshlaghi F, Zoofaghari S, Hasanzadeh A, Abbasi S, Eizadi-Mood N. Comparing Sequential Organ Failure Assessment Score, Acute Physiology and Chronic Health Evaluation II, Modified Acute Physiology and Chronic Health Evaluation II, Simplified Acute Physiology Score II and Poisoning Severity Score for Outcome Prediction of Pesticide Poisoned Patients Admitted to the Intensive Care Unit. J Res Pharm Pract 2023; 12:49-57. [PMID: 38463184 PMCID: PMC10923200 DOI: 10.4103/jrpp.jrpp_43_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 03/12/2024] Open
Abstract
Objective This study aimed to assess the severity of poisoning, various scoring systems, including Sequential Organ Failure Assessment (SOFA) score, acute physiology and chronic health evaluation II (APACHE II), Simplified Acute Physiology Score (SAPS II), Modified APACHE II, and poisoning severity score (PSS) were used. In this study, we compared the predictive value of these scoring systems on the outcome of pesticide-poisoned patients. Methods This is a cross-sectional study of pesticide-poisoned patients (140 patients) who were admitted to the intensive care unit (ICU) of Khorshid Hospital, Isfahan, Iran, between January 2015 and 2019. The area under the receiver operating characteristic (AUC) curve and the predictive value of scoring systems were compared. Findings Poisoning was higher in the male population (72.8%). The causes of poisoning were paraquat, (38.6%), aluminum phosphide, (32.1%), and organophosphate, (29.3%). The mean age of the patients was 33.9 years. Most patients (79.3%) attempted suicide. The mortality rate was 46.43%. The mean of "SOFA score," "APACHE II," "SAPS II," "Modified APACHE II," and "PSS" was 5.9; 15.7; 30.02; 15.8; and 1.9, respectively. There was a significant difference in the mean of all scoring systems for outcome prediction. Among all scoring systems, the SAPS II score with the cutoff point (16.5) had the best criteria for outcome prediction (AUC (0.831 ± 0.037), sensitivity (83.1%, 95% confidence interval [CI]: [71.7-91.2]), specificity (75.7%, 95% CI: [64.3-84.9]), positive predictive values (75.0%, 95% CI: [66.4-82.0]), negative predictive values (83.6%, 95% CI: [74.5-89.9]). Conclusion The SAPS II scoring system may be a suitable indicator for outcome predictions in pesticide-poisoned patients in the ICU.
Collapse
Affiliation(s)
- Gholamali Dorooshi
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shiva Samsamshariat
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farzad Gheshlaghi
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shafeajafar Zoofaghari
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Akbar Hasanzadeh
- Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Saeed Abbasi
- Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nastaran Eizadi-Mood
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
4
|
Ashley-Martin J, Huang R, MacPherson S, Brion O, Owen J, Gaudreau E, Bienvenu JF, Fisher M, Borghese MM, Bouchard MF, Lanphear B, Foster WG, Arbuckle TE. Urinary concentrations and determinants of glyphosate and glufosinate in pregnant Canadian participants in the MIREC study. ENVIRONMENTAL RESEARCH 2023; 217:114842. [PMID: 36410462 DOI: 10.1016/j.envres.2022.114842] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/26/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Glyphosate is the most widely applied herbicide in agriculture. Glufosinate is a broad spectrum herbicide used to manage glyphosate-resistant weeds. Despite the widespread use of these herbicides, biomonitoring data - which inform risk assessment and management - are sparse. OBJECTIVES To identify determinants of urinary concentrations of these herbicides and their metabolites in pregnancy. METHODS We measured urinary concentrations of glyphosate, glufosinate, and their primary metabolites aminomethylphosphonic acid (AMPA) and 3-methylphosphinicopropionic acid (3-MPPA) in a single spot urine specimen collected during the first trimester of pregnancy from the Maternal-Infant Research on Environmental Chemicals (MIREC) study. MIREC recruited about 2000 pregnant women from 10 Canadian cities between 2008 and 2011. We used UItra-Performance Liquid Chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) with sensitive limits of detection to quantify analyte concentrations. We examined urinary concentrations according to maternal sociodemographics, sample collection characteristics, reported pesticide use, and consumption of fruits, vegetables, legumes, and grain products. We used ANOVA models with specific gravity-standardized chemical concentrations as the dependent variable to determine associations with maternal and sample determinants. RESULTS Among women with biobanked urine samples (n = 1829-1854), 74% and 72% had detectable concentrations of glyphosate and AMPA, respectively. In contrast, one and six percent of women had detectable concentrations of glufosinate and 3-MPPA, respectively. The specific gravity-standardized geometric mean (95% CI) concentrations of glyphosate and AMPA were 0.112 (0.099-0.127) μg/L and 0.159 (0.147-0.172) μg/L, respectively. We observed a dose-response relationship between consumption of whole grain bread and higher urinary glyphosate concentrations. Season of urine collection and self-reported pesticide use were not associated with increased concentrations of any analyte. CONCLUSIONS We detected glyphosate and AMPA in the majority of pregnant women from this predominantly urban Canadian cohort. Diet was a probable route of exposure.
Collapse
Affiliation(s)
- Jillian Ashley-Martin
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Rong Huang
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Susan MacPherson
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Orly Brion
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - James Owen
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Eric Gaudreau
- INSPQ, Centre de Toxicologie du Québec, Direction de la Santé Environnementale et de la Toxicologie, Quebec, QC, G1V 5B3, Canada.
| | - Jean-Francois Bienvenu
- INSPQ, Centre de Toxicologie du Québec, Direction de la Santé Environnementale et de la Toxicologie, Quebec, QC, G1V 5B3, Canada.
| | - Mandy Fisher
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Michael M Borghese
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Maryse F Bouchard
- University of Montreal, Department of Environmental Health and Occupational Health, Montreal, QC, H3T 1J4, Canada.
| | - Bruce Lanphear
- Simon Fraser, Faculty of Health Sciences, Burnaby, BC V5A 1S6, Canada.
| | - Warren G Foster
- McMaster University, Department of Obstetrics & Gynecology, Hamilton, ON, L8S 4L8, Canada.
| | - Tye E Arbuckle
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| |
Collapse
|
5
|
Kim J, Chun BJ, Moon JM, Cho Y. Prognostic value of neutrophil to lymphocyte ratio in the diagnosis of neurotoxicity after glufosinate ammonium poisoning. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2022; 85:511-519. [PMID: 35164661 DOI: 10.1080/15287394.2022.2040670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Neurotoxicity related to glufosinate ammonium is known to occur after a latent period of 4-60 hr following ingestion of this herbicide. However, neurotoxicity is difficult to predict in the emergency department (ED) and only a few parameters are known to be useful to indicate development of neurotoxicity. Determination of a systemic inflammation parameter such as the neutrophil to lymphocyte ratio (NLR), is a rapid and simple method which was found to be a prognostic marker in various clinical conditions such as sepsis, cardiac disorders, stroke, and cancer. Therefore, the aim of this study was to determine whether the NLR might predict neurotoxicity and be used at ED to detect neurotoxicity induced following glufosinate ammonium poisoning in admitted patients. This retrospective observational study collected data from consecutive patients diagnosed with acute glufosinate ammonium poisoning between January 2005 and December 2020. The primary outcome was development of neurotoxicity following acute glufosinate ammonium poisoning. Out of the 72 patients selected 44 patients (61.1%) exhibited neurotoxic symptoms. Neurotoxicity appeared with an approximate latent period of 12 hr. The NLR was significantly higher in the group displaying neurotoxicity. Multivariable analysis showed that the NLR was significant in predicting neurotoxicity. The NLR was independently associated with neurotoxicity initiated by glufosinate ammonium. Therefore, the use of the NLR might help clinically to readily and rapidly predict development of neurotoxicity associated with glufosinate ammonium at the ED.
Collapse
Affiliation(s)
- Joochan Kim
- Department of Medicine, Chonnam National University, Buk-gu, Gwangju, Republic of Korea
| | - Byeong Jo Chun
- Department of Medicine, Chonnam National University, Buk-gu, Gwangju, Republic of Korea
| | - Jeong Mi Moon
- Department of Medicine, Chonnam National University, Buk-gu, Gwangju, Republic of Korea
| | - Yongsoo Cho
- Department of Medicine, Chonnam National University, Buk-gu, Gwangju, Republic of Korea
| |
Collapse
|
6
|
Prediction Model of Acute Respiratory Failure in Patients with Acute Pesticide Poisoning by Intentional Ingestion: Prediction of Respiratory Failure in Pesticide Intoxication (PREP) Scores in Cohort Study. J Clin Med 2022; 11:jcm11041048. [PMID: 35207319 PMCID: PMC8875988 DOI: 10.3390/jcm11041048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/08/2022] [Accepted: 02/15/2022] [Indexed: 11/17/2022] Open
Abstract
Acute respiratory failure is the primary cause of mortality in patients with acute pesticide poisoning. The aim of the present study was to develop a new and efficient score system for predicting acute respiratory failure in patients with acute pesticide poisoning. This study was a retrospective observational cohort study comprised of 679 patients with acute pesticide poisoning by intentional poisoning. We divided this population into a ratio of 3:1; training set (n = 509) and test set (n = 170) for model development and validation. Multivariable logistic regression models were used in developing a score-based prediction model. The Prediction of Respiratory failure in Pesticide intoxication (PREP) scoring system included a summation of the integer scores of the following five variables; age, pesticide category, amount of ingestion, Glasgow Coma Scale, and arterial pH. The PREP scoring system developed accurately predicted respiratory failure (AUC 0.911 [0.849−0.974], positive predictive value 0.773, accuracy 0.873 in test set). We came up with four risk categories (A, B, C and D) using PREP scores 20, 40 and 60 as the cut-off for mechanical ventilation requirement risk. The PREP scoring system developed in the present study could predict respiratory failure in patients with pesticide poisoning, which can be easily implemented in clinical situations. Further prospective studies are needed to validate the PREP scoring system.
Collapse
|
7
|
Hsiao JT, Pan HY, Kung CT, Cheng FJ, Chuang PC. Assessment of glufosinate-containing herbicide exposure: A multi-center retrospective study. Am J Emerg Med 2021; 50:232-236. [PMID: 34392143 DOI: 10.1016/j.ajem.2021.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/04/2021] [Accepted: 08/06/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Exposure to glufosinate ammonium, an herbicide used worldwide, can cause CNS and respiratory toxicities. This study aimed to analyze acute human glufosinate ammonium poisoning. MATERIALS AND METHODS This multicenter retrospective cohort study involved five medical institutes affiliated with the Chang Gung Memorial Hospital system. Patients with glufosinate ammonium exposure visiting the emergency department (ED) between January 2008 and December 2020 were included. RESULTS In total, 95 patients were enrolled. Compared to exposure via the non-oral route, patients exposed orally (n = 61) had lower GCS scores, higher mortality rates, and longer hospital lengths of stay (P-value: <0.001, 0.002, and < 0.001, respectively). In the subgroup analysis among oral exposure patients, the survival group had a lower amount of estimated glufosinate ingestion than the non-survival group (10.5 [3.4-27] vs. 40.5 [27-47.3] g, P-value: 0.022), lower rate of substance co-exposure (9 [19.6%] vs. 10 [66.7%] P-value: 0.001), and lower rate of paraquat co-exposure (0 [0%] vs. 7 [46.7%] P < 0.001) compared with the mortality group. In the orally-exposed and non-paraquat co-exposure patients (n = 54), age > 70 years and GCS score < 9 at triage presented a high sensitivity (100.00%, 95% CI: 63.06-100.00%) and medium specificity (58.70%, 95% CI: 43.23-73.00%) in predicting mortality. CONCLUSION Old age, change in consciousness, and paraquat co-exposure were associated with higher mortality in human glufosinate poisoning. Age > 70 years and GCS score < 9 at triage could be predictors of mortality in patients with acute oral glufosinate poisoning.
Collapse
Affiliation(s)
- Jen-Tso Hsiao
- Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan
| | - Hsiu-Yung Pan
- Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan; Chang Gung University College of Medicine, Guishan District, Taoyuan City, Taiwan
| | - Chia-Te Kung
- Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan; Chang Gung University College of Medicine, Guishan District, Taoyuan City, Taiwan.
| | - Fu-Jen Cheng
- Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan; Chang Gung University College of Medicine, Guishan District, Taoyuan City, Taiwan.
| | - Po-Chun Chuang
- Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taiwan; Chang Gung University College of Medicine, Guishan District, Taoyuan City, Taiwan.
| |
Collapse
|
8
|
Takano HK, Dayan FE. Glufosinate-ammonium: a review of the current state of knowledge. PEST MANAGEMENT SCIENCE 2020; 76:3911-3925. [PMID: 32578317 DOI: 10.1002/ps.5965] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/16/2020] [Accepted: 06/23/2020] [Indexed: 05/11/2023]
Abstract
Glufosinate is a key herbicide to manage glyphosate-resistant weeds mainly because it is a broad-spectrum herbicide, and transgenic glufosinate-resistant crops are available. Although glufosinate use has increased exponentially over the past decade, the treated area with this herbicide is far less than that with glyphosate. This is because glufosinate often provides inconsistent performance in the field, which is attributed to several factors including environmental conditions, application technology, and weed species. Glufosinate is also highly hydrophilic and does not translocate well in plants, generally providing poor control of grasses and perennial species. In the soil, glufosinate is rapidly degraded by microorganisms, leaving no residual activity. While there have been concerns regarding glufosinate toxicology, its proper use can be considered safe. Glufosinate is a fast-acting herbicide that was first discovered as a natural product, and is the only herbicide presently targeting glutamine synthetase. The mode of action of glufosinate has been controversial, and the causes for the rapid phytotoxicity have often been attributed to ammonia accumulation. Recent studies indicate that the contact activity of glufosinate results from the accumulation of reactive oxygen species and subsequent lipid peroxidation. Glufosinate disrupts both photorespiration and the light reactions of photosynthesis, leading to photoreduction of molecular oxygen, which generates reactive oxygen species. The new understanding of the mode of action provided new ideas to improve the herbicidal activity of glufosinate. Finally, a very few weed species have evolved glufosinate resistance in the field, and the resistance mechanisms are generally not well understood requiring further investigation. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Hudson K Takano
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| | - Franck E Dayan
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, USA
| |
Collapse
|
9
|
Abstract
PURPOSE OF REVIEW To summarize the differential diagnosis and diagnostic approach of sudden unresponsiveness with normal vital signs in various settings, including the ICU. RECENT FINDINGS Sudden unresponsiveness may be either transient or persistent, and may result from primary brain diseases or nonstructural systemic conditions. Life-threatening causes should always be discriminated from those more benign. Regional epidemiology, for example regarding intoxications, and evolving therapeutic management, for example for ischemic stroke, should always be taken into account for optimal opportunity for rapid diagnosis and best management. SUMMARY Sudden unresponsiveness with normal vital signs should trigger immediate and focused diagnostic evaluation to find or exclude those conditions requiring urgent, and possibly life-saving, management.
Collapse
|
10
|
Lee J, Lee Y, Kim YS, Choi JG, Go TH, Kim H, Cha YS. Serum ammonia as an early predictor of in-hospital mortality in patients with glufosinate poisoning. Hum Exp Toxicol 2019; 38:1007-1013. [DOI: 10.1177/0960327119855124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background: The mortality rate associated with human glufosinate poisoning is high. We evaluated the usefulness of serum ammonia and sequential organ failure assessment (SOFA) and acute physiology and chronic health evaluation II (APACHE II) scores for early prediction of in-hospital mortality in glufosinate ammonium poisoning. Methods: A prospectively collected pesticide poisoning registry at a single academic medical center was retrospectively analyzed. Data were collected from consecutive patients diagnosed with glufosinate ammonium poisoning between May 2007 and February 2018. The initial serum ammonia level was defined as the highest serum ammonia level measured within 12 h after emergency department (ED) arrival. The SOFA and APACHE II scores were calculated using data obtained within the first 12 h after ED arrival. The patients were divided into survivor and nonsurvivor groups by in-hospital death status. Results: In total, 110 patients were included. Ten patients (9.1%) died in the hospital despite treatment. Median initial serum ammonia level was significantly higher in the nonsurvivor group than in the survivor group (219 (range: 158–792) versus 100.5 (range: 25–317) µg/dL, p < 0.001). Median SOFA and APACHE II scores in the survivor and nonsurvivor groups were 2 (range: 0–10) versus 5 (range: 1–8) ( p = 0.044) and 7 (range: 0–28) versus 16 (range: 8–22) ( p = 0.001), respectively. In the multiple logistic regression analysis, the initial serum ammonia level was the only independent predictor (cutoff value: 151 µg/dL). Conclusion: An initial serum ammonia level >151 µg/dL was an independent early predictor of in-hospital mortality in glufosinate ammonium poisoning.
Collapse
Affiliation(s)
- J Lee
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Y Lee
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - YS Kim
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - JG Choi
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - TH Go
- Center of Biomedical Data Science, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - H Kim
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - YS Cha
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| |
Collapse
|