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Coskun A, Demirci B, Oymak I, Ferhatlar E, Eren SH. Electrocardiographic Changes, Mortality, and Late Period Findings in Methyl Alcohol Poisoning. J Clin Med 2024; 13:5999. [PMID: 39408059 PMCID: PMC11478394 DOI: 10.3390/jcm13195999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2024] [Revised: 09/04/2024] [Accepted: 10/05/2024] [Indexed: 10/20/2024] Open
Abstract
Background: Methyl alcohol poisoning (MAP) is a common commercial compound that can lead to significant morbidity and mortality when exposed to high levels. This study aims to describe MAP-related electrocardiography (ECG) changes and post-acute late complications. Materials and Methods: The study was conducted through a retrospective data review between 2017 and 2023. Patient data were recorded, including demographic information, medication use, and laboratory results. Twelve-lead ECG recordings were evaluated and the results were recorded. The cases included in the study were grouped according to QTc distance, ECG findings, late-term complications, treatment status, and mortality. Results: The mean age of all cases included in the study (n = 227) was 43.23 ± 11.11 years, 8 (3.5%) cases were female, and the age distribution was between 19 and 68 years (p = 0.792). The age distribution of QTc groups was not significant (p = 0.792). The mean QTc distance was 442.7 ± 60.1 ms in all cases (n = 227) and 514.08 ± 5.45 ms in cases with mortality (n = 49) (p < 0.001). The mean time to application of the patients to the hospital (n = 227) was 19.1 ± 4.61 h, and blood sugar was 130.7 ± 32.09 mg/dL (p < 0.001). In addition, the mean pH of the cases (n = 227) was 7.14 ± 0.2, bicarbonate was 17.17 ± 4.86 mmol/L, the base deficit was -6.21 ± 3.18 mmol/L, the anion gap was 19.36 ± 7.31 mmol/L, and lactate was 4.82 ± 2.45 mmol/L (p < 0.001). Mortality occurred in 49 (21.6%) of the patients, and all of them were in-hospital deaths. In all cases where mortality occurred, pH was below 6.93 ± 0.22 and severe acidosis was directly related to death. MAP, sinus tachycardia in 31 (13.7%) cases, bradycardia in 8 (3.5%), atrial fibrillation in 5 (2.2%), accelerated idioventricular rhythm in 3 (1.3%), and 11 (4.8%), left bundle branch block, and right bundle branch block were detected in 22 (9.7%). All of these ECG findings were newly developed conditions with no previous history. In the 6-month follow-up after discharge, 4 (1.8%) of the cases developed neurological deficit, 15 (6.6%) had acute coronary syndrome and severe heart failure, 23 (10.1%) had permanent blindness, 6 (2.7%) had renal failure, and 6 (2.7%) had pancreatitis. Conclusions: Methyl alcohol poisoning can cause various ECG changes; sinus tachycardia, nonspecific changes, and QTc prolongation are the most common findings. These changes are more pronounced in cases of severe acidosis. Patients should be warned of late signs of MAP.
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Affiliation(s)
- Abuzer Coskun
- Department of Emergency Medicine, Istanbul Bagcilar Education and Research Hospital, Istanbul 34200, Turkey; (B.D.); (I.O.); (E.F.)
| | - Burak Demirci
- Department of Emergency Medicine, Istanbul Bagcilar Education and Research Hospital, Istanbul 34200, Turkey; (B.D.); (I.O.); (E.F.)
| | - Ismail Oymak
- Department of Emergency Medicine, Istanbul Bagcilar Education and Research Hospital, Istanbul 34200, Turkey; (B.D.); (I.O.); (E.F.)
| | - Enes Ferhatlar
- Department of Emergency Medicine, Istanbul Bagcilar Education and Research Hospital, Istanbul 34200, Turkey; (B.D.); (I.O.); (E.F.)
| | - Sevki Hakan Eren
- Department of Emergency Medicine, Faculty of Medicine, Gaziantep University, Gaziantep 27310, Turkey;
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2
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Partoune M, Tebache M, Shalchian S. Bilateral optic nerve necrosis after self-induced methanol poisoning. Acta Neurol Belg 2024:10.1007/s13760-024-02642-6. [PMID: 39325268 DOI: 10.1007/s13760-024-02642-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Accepted: 09/20/2024] [Indexed: 09/27/2024]
Affiliation(s)
- M Partoune
- Radiodiagnostic Unit, University Hospital of Liège "CHU de Liège", Liège, Belgium.
| | - M Tebache
- Radiodiagnostic Unit, Citadel hospital center « Citadelle », Liège, Belgium
| | - S Shalchian
- Neurology Unit, Citadel hospital center "Citadelle", Liège, Belgium
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3
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Moulaei K, Afrash MR, Parvin M, Shadnia S, Rahimi M, Mostafazadeh B, Evini PET, Sabet B, Vahabi SM, Soheili A, Fathy M, Kazemi A, Khani S, Mortazavi SM, Hosseini SM. Explainable artificial intelligence (XAI) for predicting the need for intubation in methanol-poisoned patients: a study comparing deep and machine learning models. Sci Rep 2024; 14:15751. [PMID: 38977750 PMCID: PMC11231277 DOI: 10.1038/s41598-024-66481-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 07/01/2024] [Indexed: 07/10/2024] Open
Abstract
The need for intubation in methanol-poisoned patients, if not predicted in time, can lead to irreparable complications and even death. Artificial intelligence (AI) techniques like machine learning (ML) and deep learning (DL) greatly aid in accurately predicting intubation needs for methanol-poisoned patients. So, our study aims to assess Explainable Artificial Intelligence (XAI) for predicting intubation necessity in methanol-poisoned patients, comparing deep learning and machine learning models. This study analyzed a dataset of 897 patient records from Loghman Hakim Hospital in Tehran, Iran, encompassing cases of methanol poisoning, including those requiring intubation (202 cases) and those not requiring it (695 cases). Eight established ML (SVM, XGB, DT, RF) and DL (DNN, FNN, LSTM, CNN) models were used. Techniques such as tenfold cross-validation and hyperparameter tuning were applied to prevent overfitting. The study also focused on interpretability through SHAP and LIME methods. Model performance was evaluated based on accuracy, specificity, sensitivity, F1-score, and ROC curve metrics. Among DL models, LSTM showed superior performance in accuracy (94.0%), sensitivity (99.0%), specificity (94.0%), and F1-score (97.0%). CNN led in ROC with 78.0%. For ML models, RF excelled in accuracy (97.0%) and specificity (100%), followed by XGB with sensitivity (99.37%), F1-score (98.27%), and ROC (96.08%). Overall, RF and XGB outperformed other models, with accuracy (97.0%) and specificity (100%) for RF, and sensitivity (99.37%), F1-score (98.27%), and ROC (96.08%) for XGB. ML models surpassed DL models across all metrics, with accuracies from 93.0% to 97.0% for DL and 93.0% to 99.0% for ML. Sensitivities ranged from 98.0% to 99.37% for DL and 93.0% to 99.0% for ML. DL models achieved specificities from 78.0% to 94.0%, while ML models ranged from 93.0% to 100%. F1-scores for DL were between 93.0% and 97.0%, and for ML between 96.0% and 98.27%. DL models scored ROC between 68.0% and 78.0%, while ML models ranged from 84.0% to 96.08%. Key features for predicting intubation necessity include GCS at admission, ICU admission, age, longer folic acid therapy duration, elevated BUN and AST levels, VBG_HCO3 at initial record, and hemodialysis presence. This study as the showcases XAI's effectiveness in predicting intubation necessity in methanol-poisoned patients. ML models, particularly RF and XGB, outperform DL counterparts, underscoring their potential for clinical decision-making.
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Affiliation(s)
- Khadijeh Moulaei
- Department of Health Information Technology, School of Paramedical, Ilam University of Medical Sciences, Ilam, Iran
| | - Mohammad Reza Afrash
- Deparment of Artificial Intelligence, Smart University of Medical Sciences, Tehran, Iran
| | - Mohammad Parvin
- Department of Industrial and Systems Engineering, Auburn University, Auburn, AL, USA
| | - Shahin Shadnia
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mitra Rahimi
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Babak Mostafazadeh
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Peyman Erfan Talab Evini
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Babak Sabet
- Deparment of Artificial Intelligence, Smart University of Medical Sciences, Tehran, Iran
- Department of Surgery, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Amirali Soheili
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mobin Fathy
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arya Kazemi
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sina Khani
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Mortazavi
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sayed Masoud Hosseini
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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4
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Zvonkova M, Adamek M, Skowronkova N, Dlabaja S, Matyas J, Jasso M, Adamkova A, Mlcek J, Salek RN, Buran M. Compact 3D-Printed Unit for Separation of Simple Gas Mixtures Combined with Chemiresistive Sensors. SENSORS (BASEL, SWITZERLAND) 2024; 24:4391. [PMID: 39001169 PMCID: PMC11244592 DOI: 10.3390/s24134391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 06/27/2024] [Accepted: 07/04/2024] [Indexed: 07/16/2024]
Abstract
Inexpensive chemiresistive sensors are often insufficiently selective as they are sensitive to multiple components of the gas mixture at the same time. One solution would be to insert a device in front of the sensor that separates the measured gas mixture and possibly isolates the unwanted components. This study focused on the fabrication and characterization of a compact unit, which was fabricated by 3D printing, for the separation and detection of simple gas mixtures. The capillary, the basic part of the compact unit, was 4.689 m long and had a diameter of 0.7 mm. The compact unit also contained a mixing chamber on the inlet side and a measuring chamber with a MiCS-6814 sensor on the outlet side. Mixtures of ethanol and water at different concentrations were chosen for characterization. The measured calibration curve was found to have a reliability of R2 = 0.9941. The study further addressed the elements of environmental friendliness of the materials used and their sustainability.
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Affiliation(s)
- Magdalena Zvonkova
- Department of Food Analysis and Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 5669, 760 01 Zlin, Czech Republic
| | - Martin Adamek
- Department of Automation and Control Engineering, Faculty of Applied Informatics, Tomas Bata University in Zlin, Nad Stranemi 4511, 760 05 Zlin, Czech Republic
| | - Nela Skowronkova
- Department of Food Analysis and Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 5669, 760 01 Zlin, Czech Republic
| | - Stepan Dlabaja
- Department of Automation and Control Engineering, Faculty of Applied Informatics, Tomas Bata University in Zlin, Nad Stranemi 4511, 760 05 Zlin, Czech Republic
| | - Jiri Matyas
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
| | - Miroslav Jasso
- Department of Food Analysis and Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 5669, 760 01 Zlin, Czech Republic
| | - Anna Adamkova
- Department of Food Analysis and Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 5669, 760 01 Zlin, Czech Republic
| | - Jiri Mlcek
- Department of Food Analysis and Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 5669, 760 01 Zlin, Czech Republic
| | - Richardos Nikolaos Salek
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 5669, 760 01 Zlin, Czech Republic
| | - Martin Buran
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 616 00 Brno, Czech Republic
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5
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Mishra S, Patel C, Pandey D, Mukherjee S, Raghuvanshi A. Semiconducting 2D Copper(I) Iodide Coordination Polymer as a Potential Chemiresistive Sensor for Methanol. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311448. [PMID: 38326094 DOI: 10.1002/smll.202311448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 01/24/2024] [Indexed: 02/09/2024]
Abstract
The development of a cost-effective, ultra-selective, and room temperature gas sensor is the need of an hour, owing to the rapid industrialization. Here, a new 2D semiconducting Cu(I) coordination polymer (CP) with 1,4-di(1H-1,2,4-triazol-1-yl)benzene (1,4-TzB) ligand is reported. The CP1 consists of a Cu2I2 secondary building unit bridged by 1,4-TzB, and has high stability as well as semiconducting properties. The chemiresistive sensor, developed by a facile drop-casting method derived from CP1, demonstrates a response value of 66.7 at 100 ppm on methanol exposure, accompanied by swift transient (response and recovery time 17.5 and 34.2 s, respectively) behavior. In addition, the developed sensor displays ultra-high selectivity toward methanol over other volatile organic compounds , boasting LOD and LOQ values of 1.22 and 4.02 ppb, respectively. The CP is found to be a state-of-the-art chemiresistive sensor with ultra-high sensitivity and selectivity toward methanol at room temperature.
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Affiliation(s)
- Shivendu Mishra
- Department of Chemistry, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Chandrabhan Patel
- Department of Electrical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Dilip Pandey
- Department of Chemistry, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Shaibal Mukherjee
- Department of Electrical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
- Centre for Advance Electronics (CAE), Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Abhinav Raghuvanshi
- Department of Chemistry, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
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6
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Safari H, Ajudani R, Savaie M, Babadi AJ, Alizadeh P. Intracerebral hemorrhage in methanol toxicity patients during COVID-19 pandemic: case report and review of literature. Forensic Toxicol 2024; 42:242-247. [PMID: 38334843 DOI: 10.1007/s11419-023-00680-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/18/2023] [Indexed: 02/10/2024]
Abstract
PURPOSE The aim of this study is to examine the clinical and imaging manifestations of methanol toxicity during the COVID-19 pandemic, as well as to review existing studies on this topic. The most common cause of methanol intoxication is methanol-adulterated liquor. The primary metabolite of methanol, formic acid, is responsible for pathological changes. Symptoms typically present within 6-24 h of consumption and can include visual disturbances, acute neurological symptoms, and gastrointestinal issues. During the initial year of the COVID-19 pandemic, methanol poisoning cases increased significantly. METHODS In this study, We present six different patients with methanol intoxication and their clinical and imaging features. RESULTS In the literature review, the most common clinical presentation was loss of consciousness and obtundation and the other was vision loss. CT scan findings showed bilateral putaminal necrosis and hemorrhage in 55% of methanol toxicity patients. CONCLUSION Methanol intoxication, causing bilateral putaminal involvement and a 50% mortality rate in intracerebral hemorrhage patients, warrants urgent toxicological analysis due to potential putaminal hemorrhage.
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Affiliation(s)
- Hosein Safari
- Pain Research Center, Neurosurgery department, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Reza Ajudani
- Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohsen Savaie
- Ahvaz Anesthesiology and Pain Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Pooyan Alizadeh
- Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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7
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Pinto C. Why is this patient acutely altered? JAAPA 2024; 37:47-49. [PMID: 38985117 DOI: 10.1097/01.jaa.0000000000000028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Affiliation(s)
- Chelsey Pinto
- Chelsey Pinto practices in critical care and hospitalist medicine at Corewell Health Pennock Hospital in Hastings, Mich. The author has disclosed no potential conflicts of interest, financial or otherwise
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8
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Sobhi N, Abdollahi M, Arman A, Mahmoodpoor A, Jafarizadeh A. Methanol Induced Optic Neuropathy: Molecular Mysteries, Public Health Perspective, Clinical Insights and Treatment Strategies. Semin Ophthalmol 2024:1-12. [PMID: 38804878 DOI: 10.1080/08820538.2024.2358310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 05/17/2024] [Indexed: 05/29/2024]
Abstract
Methanol-induced optic neuropathy (MION) represents a critical public health issue, particularly prevalent in lower socioeconomic populations and regions with restricted alcohol access. MION, characterized by irreversible visual impairment, arises from the toxic metabolization of methanol into formaldehyde and formic acid, leading to mitochondrial oxidative phosphorylation inhibition, oxidative stress, and subsequent neurotoxicity. The pathogenesis involves axonal and glial cell degeneration within the optic nerve and potential retinal damage. Despite advancements in therapeutic interventions, a significant proportion of affected individuals endure persistent visual sequelae. The study comprehensively investigates the pathophysiology of MION, encompassing the absorption and metabolism of methanol, subsequent systemic effects, and ocular impacts. Histopathological changes, including alterations in retinal layers and proteins, Müller cell dysfunction, and visual symptoms, are meticulously examined to provide insights into the disease mechanism. Furthermore, preventive measures and public health perspectives are discussed to highlight the importance of awareness and intervention strategies. Therapeutic approaches, such as decontamination procedures, ethanol and fomepizole administration, hemodialysis, intravenous fluids, electrolyte balance management, nutritional therapy, corticosteroid therapy, and erythropoietin (EPO) treatment, are evaluated for their efficacy in managing MION. This comprehensive review underscores the need for increased awareness, improved diagnostic strategies, and more effective treatments to mitigate the impact of MION on global health.
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Affiliation(s)
- Navid Sobhi
- Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mirsaeed Abdollahi
- Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Arman
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ata Mahmoodpoor
- Research Center for Integrative Medicine in Aging, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Anesthesiology and Intensive care, Faculty of Medicine, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Jafarizadeh
- Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Rahimi M, Hosseini SM, Mohtarami SA, Mostafazadeh B, Evini PET, Fathy M, Kazemi A, Khani S, Mortazavi SM, Soheili A, Vahabi SM, Shadnia S. Prediction of acute methanol poisoning prognosis using machine learning techniques. Toxicology 2024; 504:153770. [PMID: 38458534 DOI: 10.1016/j.tox.2024.153770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/21/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
Methanol poisoning is a global public health concern, especially prevalent in developing nations. This study focuses on predicting the severity of methanol intoxication using machine learning techniques, aiming to improve early identification and prognosis assessment. The study, conducted at Loghman Hakim Hospital in Tehran, Iran. The data pertaining to individuals afflicted with methanol poisoning was retrieved retrospectively and divided into training and test groups at a ratio of 70:30. The selected features were then inputted into various machine learning methods. The models were implemented using the Scikit-learn library in the Python programming language. Ultimately, the efficacy of the developed models was assessed through ten-fold cross-validation techniques and specific evaluation criteria, with a confidence level of 95%. A total number of 897 patients were included and divided in three groups including without sequel (n = 573), with sequel (n = 234), and patients who died (n = 90). The two-step feature selection was yielded 43 features in first step and 23 features in second step. In best model (Gradient Boosting Classifier) test dataset metric by 32 features younger age, higher methanol ingestion, respiratory symptoms, lower GCS scores, type of visual symptom, duration of therapeutic intervention, ICU admission, and elevated CPK levels were among the most important features predicting the prognosis of methanol poisoning. The Gradient Boosting Classifier demonstrated the highest predictive capability, achieving AUC values of 0.947 and 0.943 in the test dataset with 43 and 23 features, respectively. This research introduces a machine learning-driven prognostic model for methanol poisoning, demonstrating superior predictive capabilities compared to traditional statistical methods. The identified features provide valuable insights for early intervention and personalized treatment strategies.
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Affiliation(s)
- Mitra Rahimi
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sayed Masoud Hosseini
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Mohtarami
- Department of Computer Engineering and Information Technology (PNU), Tehran, Iran
| | - Babak Mostafazadeh
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Peyman Erfan Talab Evini
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mobin Fathy
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arya Kazemi
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sina Khani
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Mortazavi
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirali Soheili
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Rajaie Cardiovascular Medical and Research Center, Iran university of medical sciences, Tehran, Iran
| | | | - Shahin Shadnia
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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10
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Mondal S, Sabbir MHR, Islam MR, Ferdous MF, Hassan Mondol MM, Hossain MJ. Qualitative assessment of regular and premium gasoline available in Bangladesh markets. Heliyon 2024; 10:e29089. [PMID: 38601578 PMCID: PMC11004202 DOI: 10.1016/j.heliyon.2024.e29089] [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: 09/18/2023] [Revised: 03/14/2024] [Accepted: 03/29/2024] [Indexed: 04/12/2024] Open
Abstract
Assessing the quality of fuel is essential to comprehend its impact on the environment and human health. In this study, the evaluation of fuel quality standards at the consumer level was conducted by analyzing the motor fuels in Khulna, Bangladesh. A total of 32 samples of petrol (regular gasoline), and octane (premium gasoline) were collected from the fuel stations in the Khulna City Corporation area and analyzed with an FTIR-Fuel Analyzer. Fuel properties, such as research octane number (RON), motor octane number (MON), ethanol content, olefins content, and oxygen content were analyzed. For petrol, the average RON, MON, olefins, and oxygen content were 95.34, 85.70, 8.23 %v/v, and 0.78 %m/m, respectively, and for octane, they were 96.96, 85.39, 1.25 %v/v, and 0.09 %m/m, respectively. Almost all of these parameters complied with both Bangladesh standard and Euro 5 fuel specifications, and those that did not comply were very close to their standard values. However, benzene concentration, which was not specified in Bangladesh Standard, was the most alarming metric for octane since none of the samples matched the Euro 5 fuel specifications of the maximum concentration of 1 %v/v benzene; on average it was 3.70 %v/v. Although petrol benzene content (average 1.50 %v/v) was not as bad as it was for octane, it was still nowhere near good enough, with only 25% of the samples within the recommended level among the studied sample. This information holds significance in establishing the fuel profile and facilitating the identification of distinct samples linked to adulteration. Therefore, the analysis of motor fuel qualities is essential for maintaining the environment, human health, and the economy of a country.
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Affiliation(s)
- Shuvashish Mondal
- Department of Chemical Engineering, Khulna University of Engineering and Technology (KUET), Khulna, 9203, Bangladesh
| | - Md Hafijur Rahman Sabbir
- Department of Chemical Engineering, Khulna University of Engineering and Technology (KUET), Khulna, 9203, Bangladesh
| | - Md Rashedul Islam
- Department of Chemical Engineering, Khulna University of Engineering and Technology (KUET), Khulna, 9203, Bangladesh
| | - Md Faisal Ferdous
- Department of Chemical Engineering, Khulna University of Engineering and Technology (KUET), Khulna, 9203, Bangladesh
| | - Md Mahmudul Hassan Mondol
- Department of Chemical Engineering, Khulna University of Engineering and Technology (KUET), Khulna, 9203, Bangladesh
| | - Md Jahangir Hossain
- Department of Energy Science and Engineering, Khulna University of Engineering and Technology (KUET), Khulna, 9203, Bangladesh
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Alnefaie SA, Aldlgan AA, Albakiri KM, Kaabi MA, Alzwen GM, Al-Otaibi SS, Alasmari F. Methanol intoxication in the central region of Saudi Arabia: Five case studies. Saudi Pharm J 2024; 32:102018. [PMID: 38497087 PMCID: PMC10940806 DOI: 10.1016/j.jsps.2024.102018] [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] [Indexed: 03/19/2024] Open
Abstract
Outbreaks of methanol poisoning have been described in the medical literature worldwide. However, the few outbreaks that have occurred in Saudi Arabia remain undocumented. This is especially noteworthy in light of the fact that Saudi Arabia is among the countries that explicitly prohibit the usage of alcoholic beverages and recreational drugs. Herein, we describe five cases of methanol poisoning in Saudi Arabia. The first three comprise patients admitted to the emergency room (ER) with signs of methanol toxicity, such as heart palpitations, vomiting, and blurred vision; otherwise, those patients were considered medically free. The remaining two cases were examined postmortem. A headspace gas chromatography-flame ionization detector was used to test blood, vitreous humor, and urine samples for methanol. Specific lethal concentrations of methanol were defined based on published case studies as 23-740 mg/dL in blood and 12-396 mg/dL in vitreous humor. In postmortem cases of our present study, samples exhibited lethal concentrations: 118 and 257 mg/dL in blood, 116.3 and 283 mg/dL in vitreous humor. In ER cases, methanol concentrations in urine samples were lower, at 7.5, 9.1, and 20.9 mg/dL; however, toxic symptoms were still observed. These case studies indicate that it is necessary to raise community awareness about the risk of methanol poisoning in order to minimize future poisoning epidemics.
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Affiliation(s)
- Sattam A. Alnefaie
- Department of Forensic Sciences, College of Criminal Justice, Naif Arab University for Security Sciences, Riyadh, Saudi Arabia
| | | | - Khalid M. Albakiri
- Riyadh Poisons Control & Medical Forensic Chemistry Center, Ministry of Health, Riyadh, Saudi Arabia
| | - Mohammed A. Kaabi
- Department of Pathology and Laboratory Medicine, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Ghada M. Alzwen
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Sarah S. Al-Otaibi
- Drug & Poison Information Center, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Fawaz Alasmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Güler S, Üçöz Kocaşaban D. An Outbreak of Home Distillation Methanol Poisoning in Turkey During the COVID-19 Pandemic: A Single Center Experience. ARCHIVES OF IRANIAN MEDICINE 2024; 27:151-158. [PMID: 38685840 PMCID: PMC11097313 DOI: 10.34172/aim.2024.23] [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: 09/19/2023] [Accepted: 02/12/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND Causes of methanol poisoning may include accidental or suicidal use, as well as self home-distillation. In this study, it was aimed to evaluate clinical characteristics, laboratory findings, and outcomes of home-distillation methanol poisoning in two different time periods as an outbreak during the pandemic. The source of the methanol poisoning in all patients was home-brewing or distillation of methanol. METHODS The study was a single-center, retrospective, and observational case-control study. Patients over 18 years of age, in 2 different periods in the form of an outbreak due to home-distillation of methanol between April 1, 2020, and April 1, 2022, when the coronavirus disease 19 pandemic was intensely experienced in Turkey, were included in this study. RESULTS A total of 43 patients were included in the study. Of these patients, 22 were exposed to methanol between July and August 2020, and 21 patients were exposed to methanol in December 2021. Overall, 20 patients (46.5%) died, while 23 (53.5%) out of 43 patients recovered with or without sequelae. Patients with low blood pressure, oxygen saturation values, Glasgow Coma Scale (GCS) scores, high blood glucose levels, metabolic acidosis (pH<7.11), and high lactate levels (lactate>4.50 mmol/L) at admission had a statistically significantly worse prognosis. CONCLUSION In methanol poisoning due to home brewing, low blood pressure, oxygen saturation, and impaired consciousness at the time of admission were clinical findings associated with mortality. In terms of laboratory findings, especially severe metabolic acidosis and lactate elevation were observed in the group that was mortal despite treatment.
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Affiliation(s)
- Sertaç Güler
- Department of Emergency Medicine, University of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey
| | - Dilber Üçöz Kocaşaban
- Department of Emergency Medicine, University of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey
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13
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Hoang TN, Bich VLT, Thien TC, The HT, Tri DP, Van PL. Characteristics of brain magnetic resonance imaging in acute methanol intoxication: Report of 3 cases. Radiol Case Rep 2023; 18:4414-4418. [PMID: 37840895 PMCID: PMC10570555 DOI: 10.1016/j.radcr.2023.09.019] [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: 06/09/2023] [Revised: 08/30/2023] [Accepted: 09/05/2023] [Indexed: 10/17/2023] Open
Abstract
Acute methanol intoxication is uncommon. Methanol is mildly toxic, but its metabolites are formic acid and formaldehyde, causing total metabolism, visual disturbances, and central nervous system disturbances, leading to coma and death. Magnetic resonance imaging (MRI) is very important for the diagnosis and prognosis of methanol intoxication. Putaminal necrosis with or without hemorrhage is the most frequently reported finding. Other affected areas that are reported in the literature are subcortical white matter, hippocampus, optic nerve, and cerebellum. We report 3 cases of methanol intoxication and discuss their brain lesions on MRI.
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Affiliation(s)
| | - Van Le Thi Bich
- Department of Radiology, Cho Ray Hospital, Ho Chi Minh, Vietnam
| | - Tuong Cao Thien
- Department of Radiology, Cho Ray Hospital, Ho Chi Minh, Vietnam
| | - Hiep Truong The
- Emergency Department, Cho Ray Hospital, Ho Chi Minh, Vietnam
| | - Dung Pham Tri
- Emergency Department, Cho Ray Hospital, Ho Chi Minh, Vietnam
| | - Phuoc Le Van
- Department of Radiology, Cho Ray Hospital, Ho Chi Minh, Vietnam
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Sadeghi M, Fakhar M, Hoseininejad SM, Zakariaei Z, Sadeghi A. The clinico-epidemiological, diagnostic and therapeutic aspects of methanol poisoning: A five-year retrospective study, northern Iran. Drug Alcohol Depend 2023; 253:111024. [PMID: 38006673 DOI: 10.1016/j.drugalcdep.2023.111024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/23/2023] [Accepted: 11/03/2023] [Indexed: 11/27/2023]
Abstract
INTRODUCTION Methanol poisoning (MP) is a serious health issue that has become more prevalent in recent years and has resulted in numerous deaths. Early detection and timely treatment are critical for preventing fatalities and reducing the incidence of neurological complications. PATIENTS AND METHODS This study was designed as a retrospective investigation with the purpose of analyzing the clinico-epidemiological, diagnostic, and therapeutic aspects of patients who were admitted to two training hospitals in northern Iran due to MP. The selection of samples for this study was based on a pre-defined checklist. Following the completion of the treatment period in the hospital, the patients were categorized into three groups based on their clinical outcome. All relevant variables for each group were recorded and reported separately, using the SciPy library in the Python programming language. RESULTS The majority of the patients (88.12%) were male (P=0.012), the average age was 41.46, and mostly (82.18%) lived in urban regions (P=0.025). The primary clinical complaint reported was visual disorders, accounting for 75.25% of the cases, followed by nervous, gastrointestinal, respiratory, and chest pain accordingly. The average hospitalization length for the patients was 5.065 days. Out of the 101 patients, 65 (64.36%) were discharged without any complications, 17 (16.83%) were discharged with complications, and unfortunately, 19 (18.81%) were died. CONCLUSION A decreased level of consciousness and severe metabolic acidosis are commonly associated with unfavorable outcomes in MP. The use of systemic corticosteroids as a treatment method has a significant association with reducing mortality rates.
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Affiliation(s)
- Mahdieh Sadeghi
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahdi Fakhar
- Iranian National Registry Center for Lophomoniasis and Toxoplasmosis, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Zakaria Zakariaei
- Toxicology and Forensic Medicine Division, Mazandaran Registry Center for Opioids Poisoning, Antimicrobial Resistance Research Center, Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Alireza Sadeghi
- Intelligent Mobile Robot Lab (IMRL), Department of Mechatronics Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
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Papaspyridakou P, Lykouras M, Orkoula M. Quantitative determination of alcohols in human biological fluids through Raman spectroscopy: An alternative alcohol test. J Pharm Biomed Anal 2023; 236:115742. [PMID: 37757545 DOI: 10.1016/j.jpba.2023.115742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/17/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Abstract
The severe effects of alcohols on humans trigger the continuous research on the alcohols level measurement in biological fluids. The officially established technique is Headspace Gas Chromatography (HS-GC), while breathalyzers are commonly used by police on the road. However, they all exhibit drawbacks; HS-GC is expensive and labor-intensive, while the precision of breathalyzers is controversial. In the present study, a novel method was developed, for ethanol and methanol detection and quantification in human urine, saliva and blood serum, based on Raman spectroscopy. Biological fluids from healthy adult volunteers were collected, standard solutions of the alcohols in a concentration range from 0.00 μL/mL to 5.00 μL/mL were prepared and analysed using an air-tight and small volume sample carrier. Calibration curves for each binary system (alcohol - biological fluid) were created. Ethanol calculated detectable concentrations were below permissible limits for all biological fluids. In the case of methanol, the limits were not as satisfactory, but lower than intoxication level, due to the difficult spectral discrimination. For both alcohols, the lowest detection limits were recorded for saliva. All detection limits were verified by visual inspection of the spectra. The proposed quantitative method was validated in all cases regarding their specificity, working range, accuracy, precision and sensitivity.
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Affiliation(s)
| | - Michail Lykouras
- Institute of Chemical Engineering Sciences, Foundation of Research and Technology-Hellas (ICE-HT/FORTH), GR-26504 Platani, Achaias, Greece
| | - Malvina Orkoula
- Department of Pharmacy, University of Patras, GR-26504 Rio, Achaias, Greece.
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16
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Amanollahi A, Shadnia S, Mehrabi Y, Etemad K. Association between intoxication with psychoactive substances and adverse effects occurrence in consumers. Front Public Health 2023; 11:1228854. [PMID: 37822541 PMCID: PMC10563510 DOI: 10.3389/fpubh.2023.1228854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 08/28/2023] [Indexed: 10/13/2023] Open
Abstract
Background The prevalence of psychoactive substance use is increasing worldwide and identifying adverse effects of these types of drugs is necessary in intoxicated patients. Objective We aimed to investigate the association of psychoactive substance intoxication with their adverse effects on the functioning of the bodily organs. Methods This was a single-center study between March 2019 and April 2022 on intoxicated patients with psychoactive substances. Inclusion criteria were intoxication with alcohol, opioids, and stimulants, and having available results of laboratory biomarkers. Demographic and clinical data of patients at the time of admission as well as during hospitalization were reviewed, retrospectively. Data were analyzed using a generalized linear mixed model in R software and the Adjusted Odds Ratio (AOR) was estimated. Results A total of 800 hospitalized patients in the ICU (n = 400) and general ward (n = 400) were divided into two groups of intoxicated with alcohol (n = 200) and opioids or stimulants (n = 200). Liver (AOR = 0.15, p = 0.033; AOR = 0.13, p = 0.007) and kidney (AOR = 0.46, p = 0.004; AOR = 0.24, p = 0.021) dysfunction occurred less in the ICU and general ward, respectively, in opioids or stimulants intoxication compared to alcohol. Cardiovascular dysfunctions occurred more in opioids or stimulants intoxication compared to alcohol in both ICU (AOR = 10.32, p < 0.0001) and general ward (AOR = 4.74, p < 0.0001). Conclusion Kidney dysfunctions had a greater effect on mortality compared to other dysfunctions. During the follow-up, the incidence of dysfunctions increased in those intoxicated with opioids or stimulants. Men experienced more liver and kidney dysfunctions as well as mortality, but psychoactive substance experience was a protective factor in cardiovascular dysfunctions and mortality.
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Affiliation(s)
- Alireza Amanollahi
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahin Shadnia
- Department of Clinical Toxicology, Toxicological Research Center, Loghman Hakim Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yadollah Mehrabi
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Koorosh Etemad
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Kobylarz D, Noga M, Frydrych A, Milan J, Morawiec A, Glaca A, Kucab E, Jastrzębska J, Jabłońska K, Łuc K, Zdeb G, Pasierb J, Toporowska-Kaźmierak J, Półchłopek S, Słoma P, Adamik M, Banasik M, Bartoszek M, Adamczyk A, Rędziniak P, Frączkiewicz P, Orczyk M, Orzechowska M, Tajchman P, Dziuba K, Pelczar R, Zima S, Nyankovska Y, Sowińska M, Pempuś W, Kubacka M, Popielska J, Brzezicki P, Jurowski K. Antidotes in Clinical Toxicology-Critical Review. TOXICS 2023; 11:723. [PMID: 37755734 PMCID: PMC10534475 DOI: 10.3390/toxics11090723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/11/2023] [Accepted: 08/20/2023] [Indexed: 09/28/2023]
Abstract
Poisoning and overdose are very important aspects in medicine and toxicology. Chemical weapons pose a threat to civilians, and emergency medicine principles must be followed when dealing with patients who have been poisoned or overdosed. Antidotes have been used for centuries and modern research has led to the development of new antidotes that can accelerate the elimination of toxins from the body. Although some antidotes have become less relevant due to modern intensive care techniques, they can still save lives or reduce the severity of toxicity. The availability of antidotes is crucial, especially in developing countries where intensive care facilities may be limited. This article aims to provide information on specific antidotes, their recommended uses, and potential risks and new uses. In the case of poisoning, supportive therapies are most often used; however, in many cases, the administration of an appropriate antidote saves the patient's life. In this review, we reviewed the literature on selected antidotes used in the treatment of poisonings. We also characterised the antidotes (bio)chemically. We described the cases in which they are used together with the dosage recommendations. We also analysed the mechanisms of action. In addition, we described alternative methods of using a given substance as a drug, an example of which is N-acetylcysteine, which can be used in the treatment of COVID-19. This article was written as part of the implementation of the project of the Polish Ministry of Education and Science, "Toxicovigilance, poisoning prevention, and first aid in poisoning with xenobiotics of current clinical importance in Poland", grant number SKN/SP/570184/2023.
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Affiliation(s)
- Damian Kobylarz
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
| | - Maciej Noga
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
| | - Adrian Frydrych
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
| | - Justyna Milan
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
| | - Adrian Morawiec
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Agata Glaca
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Emilia Kucab
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Julia Jastrzębska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Karolina Jabłońska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Klaudia Łuc
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Gabriela Zdeb
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Jakub Pasierb
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Joanna Toporowska-Kaźmierak
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Szczepan Półchłopek
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Paweł Słoma
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Magdalena Adamik
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Mateusz Banasik
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Mateusz Bartoszek
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Aleksandra Adamczyk
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Patrycja Rędziniak
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Paulina Frączkiewicz
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Michał Orczyk
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Martyna Orzechowska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Paulina Tajchman
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Klaudia Dziuba
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Rafał Pelczar
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Sabina Zima
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Yana Nyankovska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Marta Sowińska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Wiktoria Pempuś
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Maria Kubacka
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Julia Popielska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Patryk Brzezicki
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Kamil Jurowski
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
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Alqurashi GI, Alqurashi FS, Alhusayni KM, Falemban AH, Alhindi YZ, Alsanosi SM, Alzahrani AR, Al-Ghamdi SS, Ayoub N. Case Reports Study on Methanol Poisoning in King Abdul Aziz Specialist Hospital, Taif, Saudi Arabia. J Clin Med 2023; 12:4282. [PMID: 37445316 DOI: 10.3390/jcm12134282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/28/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Methanol poisoning is a challenging issue due to its inducing acute multiple organ failures, and especially due to a lack of preparedness, available antidotes, and management protocols. The current study presents six cases of methanol poisoning that attended the emergency department of King Abdul Aziz Specialist Hospital, Taif, Saudi Arabia, between March and November 2022. All of the patients suffered from severe metabolic acidosis and visual impairment following the ingestion of homemade alcoholic beverages and colonia. Three patients were comatose, suffered from post-cardiac pulmonary arrest, and, finally, died, while the other three were non-comatose and discharged from the ICU after improvement. Management was based on clinical symptoms and other laboratory findings due to a shortage of methanol level measurement resources. The antidote, fomepizole, was not given to all of the cases due to its deficiency, and ethanol was given only to one patient due to difficulties in administering it without monitoring its concentration. Methanol poisoning and its outbreak provide insights into the dangers of hazardous homemade alcohol and other pharmaceutical preparations that might be adulterated with methanol, particularly to the shortage of suitable diagnostic testing and antidotes in addition to poor resources for management of intoxicated patients in some regions of Saudi Arabia.
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Affiliation(s)
- Ghadi I Alqurashi
- Pharmacy Department, King Abdulaziz Hospital, Taif 26521, Saudi Arabia
- Saudi Toxicology Society, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
| | - Fahad S Alqurashi
- Pharmacy Department, King Abdulaziz Hospital, Taif 26521, Saudi Arabia
| | | | - Alaa H Falemban
- Saudi Toxicology Society, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
| | - Yosra Z Alhindi
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
| | - Safaa M Alsanosi
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
| | - Abdullah R Alzahrani
- Saudi Toxicology Society, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
| | - Saeed S Al-Ghamdi
- Saudi Toxicology Society, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
| | - Nahla Ayoub
- Saudi Toxicology Society, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University (UQU), Makkah 21955, Saudi Arabia
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19
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Esmeryan KD, Lazarov Y, Grakov T, Fedchenko YI, Vergov LG, Staykov S. Metal-Phenolic Film Coated Quartz Crystal Microbalance as a Selective Sensor for Methanol Detection in Alcoholic Beverages. MICROMACHINES 2023; 14:1274. [PMID: 37374859 DOI: 10.3390/mi14061274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023]
Abstract
The facile real-time monitoring of methyl content in fermented beverages is of fundamental significance in the alcohol and restaurant industry, since as little as 4 mL of methanol entering the blood may cause intoxication or blindness. So far, the practical applicability of available methanol sensors, including the piezoresonance analogs, is somewhat limited to laboratory use due to the complexity and bulkiness of the measuring equipment involving multistep procedures. This article introduces a hydrophobic metal-phenolic film-coated quartz crystal microbalance (MPF-QCM) as a novel streamlined detector of methanol in alcoholic drinks. Unlike other QCM-based alcohol sensors, our device operates under saturated vapor pressure conditions, permitting rapid detection of methyl fractions up to seven times below the tolerable levels in spirits (e.g., whisky) while effectively suppressing the cross-sensitivity to interfering chemical compounds such as water, petroleum ether or ammonium hydroxide. Furthermore, the good surface adhesion of metal-phenolic complexes endows the MPF-QCM with superior long-term stability, contributing to the repeatable and reversible physical sorption of the target analytes. These features, combined with the lack of mass flow controllers, valves and connecting pipes delivering the gas mixture, outline the likelihood for future design of a portable MPF-QCM prototype suitable to point-of-use analysis in drinking establishments.
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Affiliation(s)
- Karekin D Esmeryan
- Acoustoelectronics Laboratory, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Yuliyan Lazarov
- Acoustoelectronics Laboratory, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Teodor Grakov
- Acoustoelectronics Laboratory, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Yulian I Fedchenko
- Acoustoelectronics Laboratory, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Lazar G Vergov
- Acoustoelectronics Laboratory, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Stefan Staykov
- Acoustoelectronics Laboratory, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
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20
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Wang C, Hiremath S, Sikora L, Kanji S, Bugeja A, Samaha D, Sood MM, Kong JWY, Clark EG. Kidney outcomes after methanol and ethylene glycol poisoning: a systematic review and meta-analysis. Clin Toxicol (Phila) 2023; 61:326-335. [PMID: 37293897 DOI: 10.1080/15563650.2023.2200547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Ingestions with methanol, ethylene glycol, diethylene glycol, propylene glycol, and isopropanol are rare yet exceedingly dangerous conditions that may require emergent management with kidney replacement therapy. Little is known regarding short- and long-term kidney outcomes post-ingestion. OBJECTIVES To comprehensively synthesize existing evidence regarding short- and long-term kidney and other outcomes of adult patients following these poisonings. METHODS We developed a search strategy in MEDLINE via OVID and then translated it into other databases including EMBASE (via OVID), PubMed, CENTRAL (via OVID). The databases were searched from their dates of inception to 29 July 2021. A grey literature search was conducted in the International Traditional Medicine Clinical Trial Registry and ClinicalTrials.gov. All interventional and observational studies and case series with ≥ five participants that reported on the outcomes of toxic alcohol (methanol, ethylene glycol, diethylene glycol, propylene glycol and isopropanol) poisonings in adult patients ≥18 years old were included. Studies that reported mortality, kidney outcomes and/or complications attributed to toxic alcohol poisoning were eligible. RESULTS The search strategy identified 1,221 citations. Sixty-seven studies (13 retrospective observational studies, one prospective observational study, 53 case series) met inclusion criteria (total N = 2,327 participants). No randomized controlled trials were identified per our prespecified criteria. Generally, included studies had small sample sizes (median of 27 participants) and were of low quality. Methanol and/or ethylene glycol poisoning made up 94.1% of included studies, whereas one study reported on isopropanol and none reported on propylene glycol. Results of the 13 observational studies of methanol and/or ethylene glycol poisoning were pooled for meta-analyses. The pooled in-hospital mortality estimates amongst patients with methanol and ethylene glycol poisoning were 24 and 11%, respectively. A more recent year of publication, female sex and mean age were associated with lower in-hospital mortality amongst individuals with ethylene glycol poisoning. Although hemodialysis was the most frequently employed kidney replacement therapy, the indications for initiation of this therapy were not reported in the majority of studies. At hospital discharge, kidney recovery occurred in 64.7-96.3% of patients with ethylene glycol poisoning. In studies of methanol and/or ethylene glycol poisoning, 2-3.7% of individuals required ongoing dialysis. Only one study reported post-discharge mortality. Furthermore, long-term toxic alcohol-mediated sequelae, such as visual and neurologic outcomes, were scarcely reported. DISCUSSION Ingestions of methanol and ethylene glycol were associated with a significant short-term risk of mortality. Although a wealth of literature in the form of case reports and case series exists, high-quality evidence regarding kidney outcomes after these poisonings is lacking. We identified a paucity of standardized reporting in clinical presentations, therapeutics and outcomes amongst adults with toxic alcohol poisoning. Amongst the included studies, there was substantial heterogeneity encompassing study type, outcomes, duration of follow-up and treatment modalities. These sources of heterogeneity restricted our ability to perform comprehensive meta-analyses of all outcomes of interest. An additional limitation is the lack of studies pertaining to propylene glycol and the paucity of data on isopropanol. CONCLUSIONS The indications for hemodialysis, long-term kidney recovery and long-term mortality risk vary widely in these poisonings and are inconsistently reported in the literature. This highlights the need for further research with standardized reporting of baseline kidney function, indications for initiation of kidney replacement therapy and short-term and long-term kidney outcomes. REGISTRATION This systematic review protocol is registered at PROSPERO, CRD42018101955.
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Affiliation(s)
- Carol Wang
- Division of Nephrology, Department of Medicine, Western University, London, ON, Canada
| | - Swapnil Hiremath
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Lindsey Sikora
- Health Sciences Library, University of Ottawa Library, University of Ottawa, Ottawa, ON, Canada
| | - Salmaan Kanji
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Ann Bugeja
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Daniel Samaha
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Manish M Sood
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Jennifer W Y Kong
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Edward G Clark
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
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21
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Allata Y, Chouhani BA, El Bardai G, Kabbali N, Sqalli Houssaini T. The Role of Nephrologists in the Management of Methanol Poisoning. Cureus 2023; 15:e37471. [PMID: 37187623 PMCID: PMC10176525 DOI: 10.7759/cureus.37471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2023] [Indexed: 05/17/2023] Open
Abstract
Acute methanol poisoning is a rare but serious condition that can lead to significant morbidity and mortality. Toxic metabolites produced by methanol, primarily formaldehyde, can cause high anion gap metabolic acidosis, with the severity of clinical presentation ranging from mild symptoms to multi-organ failure. Nine people died and four patients needed treatment at our university hospital following a collective intoxication caused by the consumption of homemade alcoholic beverages in the central region of Morocco. The four patients presented to the emergency department with varying clinical symptoms, such as decreased visual acuity, severe agitation, and dyspnea. The laboratory tests confirmed high anion gap metabolic acidosis and a subsequent toxicology screen revealed that they had consumed methanol-tainted alcohol. The treatment regimen involved inhibiting the formation of toxic metabolites using an antidote (ethanol or fomepizole), correcting metabolic acidosis, enhancing the elimination of toxic metabolites through prolonged hemodialysis, and administering adjunctive therapies. While two patients had favorable outcomes, the other two died from multi-organ failure. These findings highlight the importance of prompt diagnosis and treatment in cases of methanol poisoning.
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Affiliation(s)
- Yassine Allata
- Nephrology, Hemodialysis and Transplantation, Hassan II University Hospital, Fez, MAR
| | - Basmat Amal Chouhani
- Nephrology, Hemodialysis and Transplantation, Hassan II University Hospital, Fez, MAR
- Epidemiology and Health Sciences Research Laboratory, Faculty of Medicine, Pharmacy and Dentistry, Sidi Mohamed Ben Abdellah University, Fez, MAR
| | - Ghita El Bardai
- Nephrology, Hemodialysis and Transplantation, Hassan II University Hospital, Fez, MAR
- Epidemiology and Health Sciences Research Laboratory, Faculty of Medicine, Pharmacy and Dentistry, Sidi Mohamed Ben Abdellah University, Fez, MAR
| | - Nadia Kabbali
- Nephrology, Hemodialysis and Transplantation, Hassan II University Hospital, Fez, MAR
- Epidemiology and Health Sciences Research Laboratory, Faculty of Medicine, Pharmacy and Dentistry, Sidi Mohamed Ben Abdellah University, Fez, MAR
| | - Tarik Sqalli Houssaini
- Nephrology, Hemodialysis and Transplantation, Hassan II University Hospital, Fez, MAR
- Epidemiology and Health Sciences Research Laboratory, Faculty of Medicine, Pharmacy and Dentistry, Sidi Mohamed Ben Abdellah University, Fez, MAR
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22
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Bahmanziari N, Kafashian MA, Mohammadi SF, Lashay A. Acute Treatment of Methanol-Induced Optic Neuropathy. J Curr Ophthalmol 2023; 35:207-208. [PMID: 38250488 PMCID: PMC10795810 DOI: 10.4103/joco.joco_121_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 01/23/2024] Open
Affiliation(s)
- Najmeh Bahmanziari
- Translational Ophthalmology Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Damari Community Ophthalmology Research Center, Tehran, Iran
| | | | - Seyed-Farzad Mohammadi
- Translational Ophthalmology Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Damari Community Ophthalmology Research Center, Tehran, Iran
| | - Alireza Lashay
- Damari Community Ophthalmology Research Center, Tehran, Iran
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23
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Subedi N, Pandey DP, Wagle A, Bhandari S, Paudel S, Karn M. Fatal toxicity due to locally produced unlabeled alcohol consumption: An illustrative case series from Nepal. SAGE Open Med Case Rep 2023; 11:2050313X231157985. [PMID: 36860306 PMCID: PMC9969422 DOI: 10.1177/2050313x231157985] [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: 09/29/2022] [Accepted: 01/31/2023] [Indexed: 02/26/2023] Open
Abstract
Locally prepared liquor, which is not standardized or regulated, though cheap can contain various toxic ingredients and even may be fatal. We report a case series of four adult males who died within 18.5 h due to the effect of local liquor consumption in a hilly district of Gandaki Province of Nepal. Methanol toxicity due to illicitly produced alcohol consumption should be managed with adequate supportive care and administration of specific antidotes such as ethanol or fomepizole. Liquor production should be standardized, and quality checks should be done before the sale for consumption.
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Affiliation(s)
- Nuwadatta Subedi
- Gandaki Medical College Teaching
Hospital and Research Center, Pokhara, Gandaki Province, Nepal,Nuwadatta Subedi, Gandaki Medical College
Teaching Hospital and Research Center, Pokhara, Gandaki Province, Nepal.
| | - Deb P. Pandey
- Research Center, Invention and
Innovation Center (RC-II), Pokhara, Gandaki University, Gandaki Province,
Nepal
| | - Abhishesh Wagle
- Gandaki Medical College Teaching
Hospital and Research Center, Pokhara, Gandaki Province, Nepal
| | - Shankar Bhandari
- Gandaki Medical College Teaching
Hospital and Research Center, Pokhara, Gandaki Province, Nepal
| | - Sabita Paudel
- Gandaki Medical College Teaching
Hospital and Research Center, Pokhara, Gandaki Province, Nepal
| | - Mitesh Karn
- Gandaki Medical College Teaching
Hospital and Research Center, Pokhara, Gandaki Province, Nepal
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24
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Maqbool Q, Yigit N, Stöger-Pollach M, Ruello ML, Tittarelli F, Rupprechter G. Operando monitoring of a room temperature nanocomposite methanol sensor. Catal Sci Technol 2023; 13:624-636. [PMID: 36760342 PMCID: PMC9900598 DOI: 10.1039/d2cy01395a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
The sensing of volatile organic compounds by composites containing metal oxide semiconductors is typically explained via adsorption-desorption and surface electrochemical reactions changing the sensor's resistance. The analysis of molecular processes on chemiresistive gas sensors is often based on indirect evidence, whereas in situ or operando studies monitoring the gas/surface interactions enable a direct insight. Here we report a cross-disciplinary approach employing spectroscopy of working sensors to investigate room temperature methanol detection, contrasting well-characterized nanocomposite (TiO2@rGO-NC) and reduced-graphene oxide (rGO) sensors. Methanol interactions with the sensors were examined by (quasi) operando-DRIFTS and in situ-ATR-FTIR spectroscopy, the first paralleled by simultaneous measurements of resistance. The sensing mechanism was also studied by mass spectroscopy (MS), revealing the surface electrochemical reactions. The operando and in situ spectroscopy techniques demonstrated that the sensing mechanism on the nanocomposite relies on the combined effect of methanol reversible physisorption and irreversible chemisorption, sensor modification over time, and electron/O2 depletion-restoration due to a surface electrochemical reaction forming CO2 and H2O.
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Affiliation(s)
- Qaisar Maqbool
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica delle Marche INSTM Research Unit, via Brecce Bianche 12 60131 Ancona Italy
| | - Nevzat Yigit
- Institute of Materials Chemistry TU Wien, Getreidemarkt 9/BC A-1060 Vienna Austria
| | - Michael Stöger-Pollach
- University Service Center for Transmission Electron Microscopy TU Wien, Wiedner Hauptstr. 8-10 1040 Vienna Austria
| | - Maria Letizia Ruello
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica delle Marche INSTM Research Unit, via Brecce Bianche 12 60131 Ancona Italy
| | - Francesca Tittarelli
- Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica delle Marche INSTM Research Unit, via Brecce Bianche 12 60131 Ancona Italy
| | - Günther Rupprechter
- Institute of Materials Chemistry TU Wien, Getreidemarkt 9/BC A-1060 Vienna Austria
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25
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Zarei M, Sheikhghomi S, Aghsaei Fard M. Hemi-central retinal artery occlusion following methanol toxicity. GMS OPHTHALMOLOGY CASES 2022; 12:Doc20. [PMID: 36569357 PMCID: PMC9762174 DOI: 10.3205/oc000207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objective To describe a patient with hemi-retinal artery occlusion following methanol toxicity. Methods Observational case report. Results We report a case presented with an acute altitudinal visual field loss in the right eye following consumption of illicit alcoholic drink. In fundus photography, a well demarcated superior hemi-retinal whitening with foveal sparing was noted. Careful inspection of the optic nerve head in the right eye revealed that there was no main trunk of the central retinal artery anterior to the lamina cribrosa. Two separately emerging superior and inferior arterial trunks were noted. In fundus fluorescein angiography, earlier dye filling in the territory of the superior arterial trunk compared to the inferior arterial trunk was evident. Conclusion Hemi-central retinal occlusion may happen as an ocular consequence of methanol toxicity in patients with a proximal bifurcation of the central retinal artery.
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Affiliation(s)
- Mohammad Zarei
- Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sima Sheikhghomi
- Shahid Madani Hospital, Alborz University of Medical Sciences, Karaj, Iran,*To whom correspondence should be addressed: Sima Sheikhghomi, Shahid Madani Hospital, Alborz University of Medical Sciences, Karaj, Iran, E-mail:
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26
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Alzate-Arbelaez AF, Cortés FB, Rojano BA. Antioxidants from Hyeronima macrocarpa Berries Loaded on Nanocellulose: Thermal and Antioxidant Stability. Molecules 2022; 27:molecules27196661. [PMID: 36235198 PMCID: PMC9571521 DOI: 10.3390/molecules27196661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/04/2022] [Accepted: 10/05/2022] [Indexed: 11/16/2022] Open
Abstract
This study investigated the effect of different storage temperatures (35-55 °C) on the bioactive substances and antioxidant properties of Hyeronima macrocarpa berries loaded on nanocellulose. NC was extracted from banana pseudo-stems and presented an interesting surface and porosity properties. The acidified ethanol extract showed better anthocyanin extraction (1317 mg C3G eq./100 g FW) and was used for the preparation of the powdered product, which presented an intense and uniform magenta color, with CIELAB parameters of L* = 59.16, a* = 35.61, and b* = 7.08. The powder exhibited significant stability at storage temperatures of 35 and 45 °C, in which there was no significant loss of anthocyanins or a decrease in antioxidant capacity. In addition, the color was stable for up to 4 months without adding any preservative agent. The anthocyanin-rich extract of H. macrocarpa reached an estimated shelf-life of 315 days (stored at 35 °C), as a result of the impregnation process between the extract and NC, with the ability to protect the bioactives from degradation, due to NC surface properties.
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Affiliation(s)
- Andrés Felipe Alzate-Arbelaez
- Laboratorio Ciencia de los Alimentos, Facultad de Ciencias, Universidad Nacional de Colombia, Sede Medellín, Carrera 65 # 59A-110, Medellín 050034, Colombia
| | - Farid B. Cortés
- Grupo de Fenómenos de Superficie, Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Cra. 80 # 65-223, Medellín 050034, Colombia
| | - Benjamín A. Rojano
- Laboratorio Ciencia de los Alimentos, Facultad de Ciencias, Universidad Nacional de Colombia, Sede Medellín, Carrera 65 # 59A-110, Medellín 050034, Colombia
- Correspondence:
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27
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ŞAHİN T, BOL O, ALTUNTAŞ M. Acil Servise Başvuran Metil Alkol Zehirlenmelerinin Geriye Dönük Analizi. KONURALP TIP DERGISI 2022. [DOI: 10.18521/ktd.1147742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Objective: Methyl alcohol poisoning remains a significant cause of mortality and morbidity. This poisoning is still one of the important reasons for admission to emergency services. We aimed to examine the admission complaints, laboratory findings, treatment methods, clinical outcomes and examine the factors affecting the mortality of patients diagnosed with methyl alcohol poisoning in the emergency department.
Methods: In this retrospective descriptive study, we analysed the patients who were considered to be diagnosed with methyl alcohol intoxication among those who came to our emergency department due to alcohol intoxication from June 1, 2018 to June 1, 2020.
Results: The study included 20 (4.86%) individuals with methyl alcohol poisoning among 411 people who presented to the emergency department due to ethyl and methyl alcohol intake and resulting effects.The mean age of the patients was 47.35±14.2 years and 85% (n=17/20) were male. Upon reviewing the patients' admission symptoms, 70% were observed to have visual problems, 60% complaints of vomiting, 45% shortness of breath, and 40% changes in consciousness. In the study, it was revealed that 18.2%(n=2/11) females and 81.8%(n=9/11) males died, and the mortality rate was calculated as 55%(n=11/20).
Conclusions: The presence of visual problems, hypotension, and coma in clinical findings, high anion gap metabolic acidosis, marked osmolar gap, an increase in lactate level, and hyperglycemia in laboratory findings may be the early signs of mortality in patients with methyl alcohol poisoning. Therefore, patients with these signs should be followed up more closely and treated.
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Affiliation(s)
- Taner ŞAHİN
- SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, KAYSERİ SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ
| | - Oğuzhan BOL
- SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, KAYSERİ ŞEHİR SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ
| | - Mükerrem ALTUNTAŞ
- SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, KAYSERİ SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ
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Musa I, Raffin G, Hangouet M, Martin M, Alcacer A, Zine N, Bellagambi F, Jaffrezic-Renault N, ERRACHID A. Development of a chitosan/nickel phthalocyanine composite based conductometric micro‐sensor for methanol detection. ELECTROANAL 2022. [DOI: 10.1002/elan.202100707] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Chikritzhs T, Livingston M. Alcohol and the Risk of Injury. Nutrients 2021; 13:2777. [PMID: 34444939 PMCID: PMC8401155 DOI: 10.3390/nu13082777] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/09/2021] [Accepted: 08/10/2021] [Indexed: 12/14/2022] Open
Abstract
Globally, almost four and a half million people died from injury in 2019. Alcohol's contribution to injury-related premature loss of life, disability and ill-health is pervasive, touching individuals, families and societies throughout the world. We conducted a review of research evidence for alcohol's causal role in injury by focusing on previously published systematic reviews, meta-analyses and where indicated, key studies. The review summarises evidence for pharmacological and physiological effects that support postulated causal pathways, highlights findings and knowledge gaps relevant to specific forms of injury (i.e., violence, suicide and self-harm, road injury, falls, burns, workplace injuries) and lays out options for evidence-based prevention.
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Affiliation(s)
- Tanya Chikritzhs
- National Drug Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA 6008, Australia;
| | - Michael Livingston
- National Drug Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA 6008, Australia;
- Centre for Alcohol Policy Research, La Trobe University, Bundoora, Melbourne, VIC 3086, Australia
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