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Cao T, Guo Y, Wang D, Liu Z, Huang S, Peng C, Wang S, Wang Y, Lu Q, Xiao F, Liang Z, Zheng S, Shen J, Wu Y, Lv Z, Ke Y. Effect of Phorate on the Development of Hyperglycaemia in Mouse and Resistance Genes in Intestinal Microbiota. Antibiotics (Basel) 2022; 11:1584. [PMID: 36358236 PMCID: PMC9686891 DOI: 10.3390/antibiotics11111584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/30/2023] Open
Abstract
Phorate is a systemic, broad-spectrum organophosphorus insecticide. Although it is commonly used worldwide, phorate, like other pesticides, not only causes environmental pollution but also poses serious threats to human and animal health. Herein, we measured the blood glucose concentrations of high-fat-diet-fed mice exposed to various concentrations of phorate (0, 0.005, 0.05, or 0.5 mg/kg); we also assessed the blood glucose concentrations of high-fat-diet-fed mice exposed to phorate; we also assessed the distribution characteristics of the resistance genes in the intestinal microbiota of these mice. We found that 0.005 and 0.5 mg/kg of phorate induced obvious hyperglycaemia in the high-fat-diet-fed mice. Exposure to phorate markedly reduced the abundance of Akkermansia muciniphila in the mouse intestine. The resistance genes vanRG, tetW/N/W, acrD, and evgS were significantly upregulated in the test group compared with the control group. Efflux pumping was the primary mechanism of drug resistance in the Firmicutes, Proteobacteria, Bacteroidetes, Verrucomicrobia, Synergistetes, Spirochaetes, and Actinobacteria found in the mouse intestine. Our findings indicate that changes in the abundance of the intestinal microbiota are closely related to the presence of antibiotic-resistant bacteria in the intestinal tract and the metabolic health of the host.
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Affiliation(s)
- Tingting Cao
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Yajie Guo
- The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, China
| | - Dan Wang
- School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Zhiyang Liu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Suli Huang
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Changfeng Peng
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Shaolin Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100091, China
| | - Yang Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100091, China
| | - Qi Lu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Fan Xiao
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Zhaoyi Liang
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Sijia Zheng
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Jianzhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing 100091, China
| | - Yongning Wu
- Food Safety Research Unit (2019RU014), Chinese Academy of Medical Science, NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing 100021, China
| | - Ziquan Lv
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Yuebin Ke
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
- School of Public Health, Southern Medical University, Guangzhou 510515, China
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Bharate SB, Chao CK, Thompson CM. Comparison of the reactivation rates of acetylcholinesterase modified by structurally different organophosphates using novel pyridinium oximes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 71:103218. [PMID: 31302432 PMCID: PMC6736693 DOI: 10.1016/j.etap.2019.103218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 03/27/2019] [Accepted: 06/24/2019] [Indexed: 06/10/2023]
Abstract
A novel panel of oximes were synthesized, which have displayed varying degree of reactivation ability towards different organophosphorus (OP) modified cholinesterases. In the present article, we report a comparative reactivation profile of a series of quaternary pyridinium-oximes for electric eel acetylcholinesterase (EEAChE) inhibited by the organophosphorus (OP) inhibitors methyl paraoxon (MePOX), ethyl paraoxon (POX; paraoxon) and diisopropyl fluorophosphate (DFP) that are distinguishable as dimethoxyphosphoryl, diethoxyphosphoryl and diisopropoxyphosphoryl AChE-OP-adducts. Most of the 59-oximes tested led to faster and more extensive reactivation of MePOX- and POX-inhibited EEAChE as compared to DFP-modified EEAChE. All were effective reactivators of three OP-modified EEAChE conjugates showing 18-21% reactivation for DFP-inhibited AChE and ≥45% reactivation for MePOX- and POX-inhibited EEAChE. Oximes 7 and 8 showed kr values better than pralidoxime (1) for DFP-inhibited EEAChE. Reactivation rates determined at different inhibition times showed no significant change in kr values during 0-90 min incubation with three OPs. However, a 34-72% decrease in kr for MePOX and POX and > 95% decrease in kr for DFP-inhibited EEAChE was observed after 24 h of OP-exposure (aging).
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Affiliation(s)
- Sandip B Bharate
- The Center for Structural and Functional Neuroscience, Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, MT, 59812, USA; Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India.
| | - Chih-Kai Chao
- The Center for Structural and Functional Neuroscience, Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, MT, 59812, USA
| | - Charles M Thompson
- The Center for Structural and Functional Neuroscience, Department of Biomedical and Pharmaceutical Sciences, The University of Montana, Missoula, MT, 59812, USA.
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Naik KR, Saroja AO, Hesarur N, Patil RS. Prospective Hospital-Based Clinical and Electrophysiological Evaluation of Acute Organophosphate Poisoning. Ann Indian Acad Neurol 2019; 22:91-95. [PMID: 30692766 PMCID: PMC6327708 DOI: 10.4103/aian.aian_137_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction: Acute organophosphate (OP) poisoning is one of the most common poisoning causing significant morbidity and mortality in developing countries. Acute cholinergic manifestations predominate with many patients requiring intensive care management and ventilator support. Nerve conduction studies including repetitive nerve stimulation can evaluate the altered neuromuscular transmission and peripheral nerve function by OPs. Objective: To evaluate the electrophysiological abnormalities in patients with acute OP poisoning and correlate with clinical status. Materials and Methods: Patients with acute OP poisoning admitted from August 2016 to August 2017 were prospectively studied. Nerve conduction studies including phrenic nerve conduction were performed within 24 h of admission. Repetitive nerve stimulation was performed at 3 and 30 Hz. Nerve conduction findings were compared with data from age-matched healthy controls. Results: Thirty patients were included (18 men and 12 women) in the study. Their age ranged from 16 to 47 years (30 ± 9.2). The first assessment revealed a mild reduction of compound muscle action potential (CMAP) amplitude and reduced F-wave persistence. Eleven patients had repetitive CMAPs suggesting cholinergic excess. Seven among the 11 patients requiring mechanical ventilation had decrement–increment response with 30 Hz stimulation and reduced diaphragmatic CMAP amplitude (P = 0.02). Conclusion: The presence of repetitive CMAPs, decrement–increment response to tetanic stimulation and reduced diaphragmatic CMAP amplitude in OP poisoning patients correlate with neuromuscular paralysis and need for mechanical ventilation.
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Affiliation(s)
- Karkal Ravishankar Naik
- Department of Neurology, Jawaharlal Nehru Medical College and KLES Dr. Prabhakar Kore Hospital and MRC, Belagavi, Karnataka, India
| | - Aralikatte Onkarappa Saroja
- Department of Neurology, Jawaharlal Nehru Medical College and KLES Dr. Prabhakar Kore Hospital and MRC, Belagavi, Karnataka, India
| | - Nagabushan Hesarur
- Department of Neurology, Jawaharlal Nehru Medical College and KLES Dr. Prabhakar Kore Hospital and MRC, Belagavi, Karnataka, India
| | - Rekha Satish Patil
- Department of Medicine, Jawaharlal Nehru Medical College and KLES Dr. Prabhakar Kore Hospital and MRC, Belagavi, Karnataka, India
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