1
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Llamosas-Falcón L, Probst C, Buckley C, Jiang H, Lasserre AM, Puka K, Tran A, Zhu Y, Rehm J. How does alcohol use impact morbidity and mortality of liver cirrhosis? A systematic review and dose-response meta-analysis. Hepatol Int 2024; 18:216-224. [PMID: 37684424 PMCID: PMC10920389 DOI: 10.1007/s12072-023-10584-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023]
Abstract
BACKGROUND Alcohol consumption is the most important risk factor responsible for the disease burden of liver cirrhosis (LC). Estimates of risk relationships available usually neither distinguish between different causes such as alcohol-related LC or hepatitis-related LC, nor differentiate between morbidity and mortality as outcome. We aimed to address this research gap and identify dose-response relationships between alcohol consumption and LC, by cause and outcome. METHODS A systematic review using PubMed/Medline and Embase was conducted, identifying studies that reported an association between level of alcohol use and LC. Meta-regression models were used to estimate the dose-response relationships and control for heterogeneity. RESULTS Totally, 44 studies, and 1 secondary data source, with a total of 5,122,534 participants and 15,150 cases were included. Non-linear dose-response relationships were identified, attenuated for higher levels of consumption. For morbidity, drinking 25 g/day was associated with a RR of 1.81 (95% CI 1.68-1.94) compared to lifetime abstention; 50 g/day and 100 g/day corresponded to 3.54 (95% CI 3.29-3.81) and 8.15 (95% CI 7.46-8.91), respectively. For mortality, for 25 g/day, a RR of 2.65 (95% CI 2.22-3.16); for 50 g/day, a RR of 6.83 (95% CI 5.84-7.97); for 100 g/day, a RR of 16.38 (95% CI 13.81-19.42) were identified. A higher risk for alcohol-related and all-cause LC as compared to hepatitis C-related LC was found. CONCLUSION Our results demonstrated higher acceleration for mortality compared to morbidity. The current findings will inform the way we quantify the burden due to LC attributable to alcohol use.
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Affiliation(s)
- Laura Llamosas-Falcón
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada.
| | - Charlotte Probst
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada
- Heidelberg Institute of Global Health, Medical Faculty and University Hospital, Neuenheimer Feld 365, 69120, Heidelberg, Germany
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5T 2S1, Canada
- Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada
| | - Charlotte Buckley
- Department of Automatic Control and Systems Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
| | - Huan Jiang
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada
- Dalla Lana School of Public Health, University of Toronto, 155 College Street, Toronto, ON, M5T 1P8, Canada
| | - Aurélie M Lasserre
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada
- Addiction Medicine, Department of Psychiatry, Lausanne University Hospital, Rue du Bugnon 23, 1011, Lausanne, Switzerland
| | - Klajdi Puka
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5T 2S1, Canada
- Department of Epidemiology and Biostatistics, Western University, 1465 Richmond St, London, ON, N6G 2M1, Canada
| | - Alexander Tran
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada
| | - Yachen Zhu
- Alcohol Research Group, Public Health Institute, 6001 Shellmound St #450 Emeryville, California, 94608, USA
| | - Jürgen Rehm
- Institute for Mental Health Policy Research, Center for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5S 2S1, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, M5T 2S1, Canada
- Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada
- Dalla Lana School of Public Health, University of Toronto, 155 College Street, Toronto, ON, M5T 1P8, Canada
- Program On Substance Abuse & WHO CC, Public Health Agency of Catalonia, 81-95 Roc Boronat St. 8005, Barcelona, Spain
- Center for Interdisciplinary Addiction Research (ZIS), Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
- Institute of Medical Science, Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
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2
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Choi YJ, Yang HS, Zhang Y, Lee W, Yun SH, Nam YA, Lee G, Jung BH, Chang TS, Lee K, Lee BH. Intratracheal exposure to polyhexamethylene guanidine phosphate disrupts coordinate regulation of FXR-SHP-mediated cholesterol and bile acid homeostasis in mouse liver. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114213. [PMID: 36306612 DOI: 10.1016/j.ecoenv.2022.114213] [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: 07/27/2022] [Revised: 10/14/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
A public health crisis in the form of a significant incidence of fatal pulmonary disease caused by repeated use of humidifier disinfectants containing polyhexamethylene guanidine phosphate (PHMG) recently arose in Korea. Although the mechanisms of pulmonary fibrosis following respiratory exposure to PHMG are well described, distant-organ effect has not been reported. In this study, we investigated whether intratracheal administration of PHMG affects liver pathophysiology and metabolism. Our PHMG mouse model showed a significant decrease in liver cholesterol level. An mRNA-seq analysis of liver samples revealed an alteration in the gene expression associated with cholesterol biosynthesis and metabolism to bile acids. The expression of genes involved in cholesterol synthesis was decreased in a real-time PCR analysis. To our surprise, we found that the coordinate regulation of cholesterol and bile acid homeostasis was completely disrupted. Despite the decreased cholesterol synthesis and low bile acid levels, the farnesoid X receptor/small heterodimer partner pathway, which controls negative feedback of bile acid synthesis, was activated in PHMG mice. As a consequence, gene expression of Cyp7a1 and Cyp7b1, the rate-limiting enzymes of the classical and alternative pathways of bile acid synthesis, was significantly downregulated. Notably, the changes in gene expression were corroborated by the hepatic concentrations of the bile acids. These results suggest that respiratory exposure to PHMG could cause cholestatic liver injury by disrupting the physiological regulation of hepatic cholesterol and bile acid homeostasis.
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Affiliation(s)
- You-Jin Choi
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Hyo-Seon Yang
- Inhalation Toxicology Center for Airborne Risk Factors, Korea Institute of Toxicology, Jeongeup, Republic of Korea; College of Veterinary Medicine, Jeonbuk University, Iksan, Republic of Korea
| | - Yunfan Zhang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Wonseok Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sung Ho Yun
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yoon Ah Nam
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Gakyung Lee
- Department of Integrative Biological Sciences and Industry, Sejong University, Seoul, Republic of Korea; Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Byung Hwa Jung
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea; Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology (UST), Seoul, Republic of Korea
| | - Tong-Shin Chang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Kyuhong Lee
- Inhalation Toxicology Center for Airborne Risk Factors, Korea Institute of Toxicology, Jeongeup, Republic of Korea; Human and Environmental Toxicology, University of Science and Technology, Daejeon, Republic of Korea.
| | - Byung-Hoon Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea.
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Disruption of Membrane Integrity as a Molecular Initiating Event Determines the Toxicity of Polyhexamethylene Guanidine Phosphate Depending on the Routes of Exposure. Int J Mol Sci 2022; 23:ijms23063289. [PMID: 35328708 PMCID: PMC8955148 DOI: 10.3390/ijms23063289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/17/2022] [Accepted: 03/17/2022] [Indexed: 02/01/2023] Open
Abstract
Polyhexamethylene guanidine phosphate (PHMG-P), a cationic biocide, is widely used in household products due to its strong bactericidal activity and low toxicity. However, it causes fatal lung damage when inhaled. In this study, we investigated why PHMG-P causes fatal lung injury when inhaled, and demonstrated that the disruption of membrane integrity through ionic interaction—a molecular initiating event of PHMG-P—determines toxicity. Mice were injected intravenously with 0.9 or 7.2 mg/kg PHMG-P (IV group), or instilled intratracheally with 0.9 mg/kg PHMG-P (ITI group); they were euthanatized at 4 h and on days 1 and 7 after treatment. Increased total BAL cell count and proinflammatory cytokine production, along with fibrotic changes in the lungs, were detected in the ITI group only. Levels of hepatic enzymes and hepatic serum amyloid A mRNA expression were markedly upregulated in the 7.2 mg/kg IV and ITI groups at 4 h or day 1 after treatment, but returned to baseline. No pathological findings were detected in the heart, liver, or kidneys. To simulate the IV injection, A549, THP-1, and HepG2 cells were treated with PHMG-P in cell culture media supplemented with different serum concentrations. Increased serum concentration was associated with an increase in cell viability. These results support the idea that direct contact between PHMG-P and cell membranes is necessary for PHMG-induced toxicity.
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Lee YH, Seo DS. Toxicity of humidifier disinfectant polyhexamethylene guanidine hydrochloride by two-week whole body-inhalation exposure in rats. J Toxicol Pathol 2020; 33:265-277. [PMID: 33239844 PMCID: PMC7677626 DOI: 10.1293/tox.2020-0043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/22/2020] [Indexed: 12/02/2022] Open
Abstract
The use of polyhexamethylene guanidine hydrochloride (PHMG·HCl) as a humidifier
disinfectant caused an outbreak of pulmonary disease, leading to the deaths of pregnant
women and children in South Korea. However, limited information is available on the
inhalation toxicity of PHMG·HCl. Therefore, this study aimed to characterize the subacute
inhalation toxicity of PHMG·HCl by whole-body exposure in rats. F344 rats were exposed to
0 mg/m3, 1 mg/m3, 5 mg/m3, or 25 mg/m3 of
PHMG·HCl for 6 h/day, 5 days/week for two weeks via whole-body inhalation. Emaciation and
rale were observed in rats in the 25 mg/m3 PHMG·HCl group. Significant changes
in body weight, hematology, serum chemistry and organ weight were observed in all
PHMG·HCl-exposed groups. Gross lesions showed ballooning or red focus in the lungs of rats
in the PHMG·HCl-exposed groups. In histopathological examination, most of histological
lesions (including degeneration, atrophy, ulcer, inflammatory cell infiltration,
inflammation, and fibrosis in nasal cavity, larynx, trachea, and lungs) indicated tissue
damage by PHMG·HCl in all PHMG·HCl-exposed groups. Additionally, atrophy of the spleen,
thymus, and reproductive organs; immaturity of the testes; and cell debris in the
epididymides were affected by the reduction in body weight in PHMG·HCl-exposed groups. In
conclusion, two-week repeated whole-body inhalation exposure of rats to PHMG·HCl reveled
toxic effects on the respiratory system and secondary effects on other organs. The results
of this study indicate that the no observable adverse effect level (NOAEL) for PHMG·HCl is
below 1 mg/m3.
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Affiliation(s)
- Yong-Hoon Lee
- Inhalation Toxicity Research Center, Chemicals Research Bureau, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, 339-30 Expo-ro, Yuseong-gu, Daejeon 305-380, Republic of Korea
| | - Dong-Seok Seo
- Inhalation Toxicity Research Center, Chemicals Research Bureau, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, 339-30 Expo-ro, Yuseong-gu, Daejeon 305-380, Republic of Korea
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5
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Song J, Eghan K, Lee S, Park JS, Yoon S, Pimtong W, Kim WK. A Phenotypic and Genotypic Evaluation of Developmental Toxicity of Polyhexamethylene Guanidine Phosphate Using Zebrafish Embryo/Larvae. TOXICS 2020; 8:E33. [PMID: 32370250 PMCID: PMC7355787 DOI: 10.3390/toxics8020033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 11/16/2022]
Abstract
Polyhexamethylene guanidine-phosphate (PHMG-P), a guanidine-based cationic antimicrobial polymer, is an effective antimicrobial biocide, potent even at low concentrations. Due to its resilient bactericidal properties, it has been used extensively in consumer products. It was safely used until its use in humidifiers led to a catastrophic event in South Korea. Epidemiological studies have linked the use of PHMG-P as a humidifier disinfectant to pulmonary fibrosis. However, little is known about its harmful impacts other than pulmonary fibrosis. Thus, we applied a zebrafish embryo/larvae model to evaluate developmental and cardiotoxic effects and transcriptome changes using RNA-sequencing. Zebrafish embryos were exposed to 0.1, 0.2, 0.3, 0.4, 0.5, 1, and 2 mg/L of PHMG-P from 3 h to 96 h post fertilization. 2 mg/L of PHMG-P resulted in total mortality and an LC50 value at 96 h was determined at 1.18 mg/L. Significant developmental changes were not observed but the heart rate of zebrafish larvae was significantly altered. In transcriptome analysis, immune and inflammatory responses were significantly affected similarly to those in epidemiological studies. Our qPCR analysis (Itgb1b, TNC, Arg1, Arg2, IL-1β, Serpine-1, and Ptgs2b) also confirmed this following a 96 h exposure to 0.4 mg/L of PHMG-P. Based on our results, PHMG-P might induce lethal and cardiotoxic effects in zebrafish, and crucial transcriptome changes were linked to immune and inflammatory response.
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Affiliation(s)
- Jeongah Song
- Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, Jeongeup 56212, Korea;
| | - Kojo Eghan
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Korea; (K.E.); (S.L.); (J.-S.P.); (S.Y.)
- Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Korea
| | - Sangwoo Lee
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Korea; (K.E.); (S.L.); (J.-S.P.); (S.Y.)
| | - Jong-Su Park
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Korea; (K.E.); (S.L.); (J.-S.P.); (S.Y.)
| | - Seokjoo Yoon
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Korea; (K.E.); (S.L.); (J.-S.P.); (S.Y.)
- Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Korea
| | - Wittaya Pimtong
- Nano Environmental and Health Safety Research Team, National Nanotechnology Center, National Science and Technology Development Agency, Pathum Thani 12120, Thailand;
| | - Woo-Keun Kim
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Korea; (K.E.); (S.L.); (J.-S.P.); (S.Y.)
- Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Korea
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6
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Kim S, Park S, Jo H, Song S, Ham S, Yoon C. Behavioral characteristics of polyhexamethyleneguanidine (PHMG) particles in aqueous solution and air when sprayed into an ultrasonic humidifier. ENVIRONMENTAL RESEARCH 2020; 182:109078. [PMID: 31884194 DOI: 10.1016/j.envres.2019.109078] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 12/12/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
Polyhexamethyleneguanidine (PHMG) is widely used as a disinfectant to prevent microbial contamination in ultrasonic humidifiers in Korea; however, sales have been prohibited by the government after an outbreak of severe lung injury among humidifier disinfectant users. This study was therefore conducted to determine the characteristics of PHMG particles in aqueous solution and to investigate the behavior of airborne particles generated when using PHMG as a humidifier disinfectant. Three types of PHMG were selected (manufactured in Korea, USA, and China), with dynamic light scattering (DLS) used to determine their behavioral characteristics in aqueous solution. To determine the airborne behavioral characteristics, PHMG was diluted to obtain high (62.5-65 ppm) and low (6.25-6.5 ppm) concentrations, and then real-time monitoring instruments were used to measure the effect of using a diffusion dryer and thermodenuder to control moisture in a cleanroom. A polycarbonate filter sample was analyzed by field emission-scanning electron microscope-energy dispersive spectrometry (FE-SEM-EDS) to determine the particle morphology. The DLS intensity results for the three products showed a slightly right-shifted (~100 nm) bimodal distribution relative to the airborne particle size distribution. The size of the airborne PHMG particles increased during the spraying due to aggregation, with the particle size of aggregated particles confirmed by FE-SEM to be approximately 20 nm or more. As the PHMG concentration increased by 10 times, the airborne concentrations measured by the real-time monitoring instrument increased by 2-3 times for nanoparticles, and by 45-85 times for 1-10 μm particles during humidifier operation; however, 99% of the particles generated could be classified as PM1. Without ventilation, even after operating the humidifier, the PHMG particles could be airborne for about 2 h until the background concentration was reached. Therefore, we found that the airborne behavior was affected by PHMG concentration. Products from different manufacturers had no effect on the airborne behavior.
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Affiliation(s)
- Sunju Kim
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Seonkyeong Park
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Hyeri Jo
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Seungwhan Song
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Seunghon Ham
- Department of Occupational and Environmental Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Chungsik Yoon
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea; Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea.
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7
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Li W, Yuan F, Wang LY. Mechanism, prevention, and treatment of drug-induced cholestasis. Shijie Huaren Xiaohua Zazhi 2019; 27:1295-1303. [DOI: 10.11569/wcjd.v27.i21.1295] [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] [Indexed: 02/06/2023] Open
Abstract
Drug-induced cholestasis (DIC) refers to the accumulation of bile acid in the liver or systemic circulation due to the obstruction of intrahepatic and extrahepatic bile flow caused by various prescription or non-prescription chemicals, biological agents, traditional Chinese medicines, natural drugs, and their metabolites. In recent years, the incidence of DIC, a common manifestation of drug-induced liver injury (DILI), has been increasing with the aging of the population, the increase of the variety of clinical medications, and the more common use of combined drugs. Therefore, DIC has attracted wide attention from medical professionals, including clinical pharmacists. Hepatic injury induced by DIC is a complex process, which is triggered by two types of biological reactions: the deteriorative response, caused by bile acid accumulation, and the adaptive response aiming at removing the accumulated bile acids. Current studies have shown that several factors can trigger DIC, including changes of functions or microstructures of membrane transporters, hepatocytes, and bile ducts. There is still a lack of specific effective treatment for DIC. Timely withdrawal of suspected liver-injuring drugs is the most important strategy for DIC, and appropriate drugs should be then chosen to relieve the condition based on the clinical type of DIC and symptoms such as itching. For very few patients with severe liver failure, liver transplantation should be considered to save their lives. As such, in-depth knowledge of the mechanism of DIC can help to optimize the prediction and pharmacovigillance model of DILI in vivo during drug development and afterwards marketing, and promote the improvement of prevention and treatment strategies and the development of related interventions. This article reviews the progress in the understanding of the pathogenesis, prevention, and treatment of DIC, with an aim to provide reference for further studies.
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Affiliation(s)
- Wen Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, China
| | - Fang Yuan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, China
| | - Lai-You Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong Province, China
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Kim SH, Kwon D, Lee S, Ki SH, Jeong HG, Hong JT, Lee YH, Jung YS. Polyhexamethyleneguanidine Phosphate-Induced Cytotoxicity in Liver Cells Is Alleviated by Tauroursodeoxycholic Acid (TUDCA) via a Reduction in Endoplasmic Reticulum Stress. Cells 2019; 8:cells8091023. [PMID: 31484321 PMCID: PMC6770470 DOI: 10.3390/cells8091023] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/26/2019] [Accepted: 08/30/2019] [Indexed: 02/06/2023] Open
Abstract
Polyhexamethyleneguanidine phosphate (PHMG-P) is a widely used polymeric antimicrobial agent known to induce significant pulmonary toxicity. Several studies have reported that the liver also can be a target organ of polyhexamethyleneguanidine (PHMG) toxicity, but the exact effect of this compound on liver cells is not well understood. To identify the mechanism of PHMG hepatotoxicity, HepG2 cells were exposed to PHMG-P for 72 h. The cell viability was significantly decreased by PHMG-P in a time- and concentration-dependent manner. The mitochondrial membrane potential was markedly reduced by PHMG-P and the apoptotic signaling cascade was activated. The increases observed in C/EBP homologous protein (CHOP), p-IRE, and p-JNK levels in PHMG-P-treated cells indicated the induction of endoplasmic reticulum stress. To verify the role of ER stress in PHMG-P-induced cytotoxicity, HepG2 cells were pretreated with the chemical chaperone, tauroursodeoxycholic acid (TUDCA) and then co-treated with TUDCA and PHMG-P for 24 h. Interestingly, TUDCA inhibited PHMG-P-induced ER stress and cytotoxicity in a dose-dependent manner. The apoptotic cell death and mitochondrial depolarization were also prevented by TUDCA. The proteins involved in the apoptotic pathway were all normalized to their control levels in TUDCA-treated cells. In conclusion, the results suggest that PHMG-P induced significant cytotoxicity in liver cells and ER stress-mediated apoptosis, which may be an important mechanism mediating this hepatotoxicity.
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Affiliation(s)
- Sou Hyun Kim
- Lab of Molecular Toxicology, College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Doyoung Kwon
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA 94158-2280, USA.
| | - Seunghyun Lee
- Lab of Molecular Toxicology, College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Sung Hwan Ki
- College of Pharmacy, Chosun University, Gwangju 61452, Korea.
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea.
| | - Jin Tae Hong
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea.
| | - Yun-Hee Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Korea.
| | - Young-Suk Jung
- Lab of Molecular Toxicology, College of Pharmacy, Pusan National University, Busan 46241, Korea.
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Liu J, Zhang S, Zhao B, Shen C, Zhang X, Yang G. A novel triarylboron based ratiometric fluorescent probe for in vivo targeting and specific imaging of cancer cells expressing abnormal concentration of GGT. Biosens Bioelectron 2019; 142:111497. [PMID: 31319323 DOI: 10.1016/j.bios.2019.111497] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/05/2019] [Accepted: 07/08/2019] [Indexed: 01/01/2023]
Abstract
Abnormal expression of γ-glutamyltranspeptidase (GGT) in living organisms is closely associated with tumorigenesis. However, few reported fluorescence probes can specifically respond to abnormal concentration of GGT. Here, by functionalizing triarylboron moiety with three GGT-specific substrate (GSH) units, a novel fluorescence probe, TAB-3-GSH, was developed for detecting GGT. The results showed that TAB-3-GSH selectively responds to abnormally high levels of GGT (100-1000 U/L) rather than to normal GGT levels (<100 U/L) with ratiometric readout, since the amide linkage can be further hydrolyzed under high GGT levels. TAB-3-GSH was also capable of differentiating GGT-overexpressing ovarian cancer cells from normal cells, because of an improvement in the probe's cell membrane permeability upon reaction with GGT. Moreover, the probe could achieve selective imaging of SKOV-3 tumor site in xenograft mice model. Thus, TAB-3-GSH is a promising probe for tumor targeting in vivo.
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Affiliation(s)
- Jun Liu
- Sichuan Key Laboratory of Medical Imaging, Affiliated Hospital of North Sichuan Medical College & Department of Chemistry, School of Preclinical Medicine, North Sichuan Medical College, Nanchong, 637000, China.
| | - Shilu Zhang
- Sichuan Key Laboratory of Medical Imaging, Affiliated Hospital of North Sichuan Medical College & Department of Chemistry, School of Preclinical Medicine, North Sichuan Medical College, Nanchong, 637000, China
| | - Bin Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chengyi Shen
- Sichuan Key Laboratory of Medical Imaging, Affiliated Hospital of North Sichuan Medical College & Department of Chemistry, School of Preclinical Medicine, North Sichuan Medical College, Nanchong, 637000, China
| | - Xiaoming Zhang
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, China.
| | - Guoqiang Yang
- Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China.
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Lim C, Park S, Park J, Ko J, Lee DW, Hwang DS. Probing nanomechanical interaction at the interface between biological membrane and potentially toxic chemical. JOURNAL OF HAZARDOUS MATERIALS 2018; 353:271-279. [PMID: 29677529 DOI: 10.1016/j.jhazmat.2018.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 03/28/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
Various xenobiotics interact with biological membranes, and precise evaluations of the molecular interactions between them are essential to foresee the toxicity and bioavailability of existing or newly synthesized molecules. In this study, surface forces apparatus (SFA) measurement and Langmuir trough based tensiometry are performed to reveal nanomechanical interaction mechanisms between potential toxicants and biological membranes for ex vivo toxicity evaluation. As a toxicant, polyhexamethylene guanidine (PHMG) was selected because PHMG containing humidifier disinfectant and Vodka caused lots of victims in both S. Korea and Russia, respectively, due to the lack of holistic toxicity evaluation of PHMG. Here, we measured strong attraction (Wad ∼4.2 mJ/m2) between PHMG and head group of biological membranes while no detectable adhesion force between the head group and control molecules was measured. Moreover, significant changes in π-A isotherm of 1,2-Dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) monolayers were measured upon PHMG adsorption. These results indicate PHMG strongly binds to hydrophilic group of lipid membranes and alters the structural and phase behavior of them. More importantly, complementary utilization of SFA and Langmuir trough techniques are found to be useful to predict the potential toxicity of a chemical by evaluating the molecular interaction with biological membranes, the primary protective barrier for living organisms.
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Affiliation(s)
- Chanoong Lim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Sohee Park
- Division of Environmental Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea
| | - Jinwoo Park
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Jina Ko
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Dong Woog Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
| | - Dong Soo Hwang
- Division of Environmental Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea; Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Republic of Korea.
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11
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Neufeld M, Rehm J. Newest policy developments regarding surrogate alcohol consumption in Russia. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2018; 54:58-59. [PMID: 29414486 DOI: 10.1016/j.drugpo.2017.11.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/07/2017] [Accepted: 11/08/2017] [Indexed: 10/18/2022]
Affiliation(s)
- Maria Neufeld
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health (CAMH), 33 Russell Street, Toronto, ON M5S 2S1, Canada; Institute of Clinical Psychology and Psychotherapy, TU Dresden, Chemnitzer Str. 46, 01187 Dresden, Germany.
| | - Jürgen Rehm
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health (CAMH), 33 Russell Street, Toronto, ON M5S 2S1, Canada; Institute of Clinical Psychology and Psychotherapy, TU Dresden, Chemnitzer Str. 46, 01187 Dresden, Germany; Campbell Family Mental Health Research Institute, CAMH, 250 College Street, Toronto, ON M5T 1R8, Canada; Institute of Medical Science (IMS), University of Toronto,Medical Sciences Building, 1 King's College Circle, Room 2374, Toronto, ON M5S 1A8, Canada; Department of Psychiatry, University of Toronto, 250 College Street, 8th Floor, Toronto, ON M5T 1R8, Canada; Dalla Lana School of Public Health, University of Toronto, 155 College Street, 6th Floor, Toronto, ON M5T 3M7, Canada
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12
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Li S, Hu R, Yang C, Zhang X, Zeng Y, Wang S, Guo X, Li Y, Cai X, Li S, Han C, Yang G. An ultrasensitive bioluminogenic probe of γ-Glutamyltranspeptidase in vivo and in human serum for tumor diagnosis. Biosens Bioelectron 2017; 98:325-329. [DOI: 10.1016/j.bios.2017.06.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/25/2017] [Accepted: 06/27/2017] [Indexed: 12/22/2022]
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Effectiveness of policy changes to reduce harm from unrecorded alcohol in Russia between 2005 and now. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2017; 51:1-9. [PMID: 29031132 DOI: 10.1016/j.drugpo.2017.09.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 08/01/2017] [Accepted: 09/11/2017] [Indexed: 11/23/2022]
Abstract
BACKGROUND Consumption of unrecorded alcohol (alcohol that is not taxed and reflected in official statistics, but consumed as a beverage) has been identified as one of the main contributors to alcohol-attributable premature mortality in Russia. The problem was highlighted by a recent a mass poisoning with surrogate alcohol occurred in the Siberian city of Irkutsk. METHODS Based on key publications and legislative documents, a narrative review was undertaken about alcohol-related harm reduction policies in Russia for the period between 2005 and 2017, as well as the impact of these policies on the recorded and unrecorded alcohol consumption and alcohol market. RESULTS Various policy measures mainly targeting availability and price of recorded and unrecorded alcohol have been introduced since 2005, which generally coincided with the decreases in alcohol-related mortality observed at that time. However, regulations on medicinal and cosmetic products have remained inconsistent providing the foundations for the continued existence of a legal industry of surrogates with broad availability and misuse. CONCLUSION The Russian experiences of introducing alcohol policies demonstrate that there are effective measures to reduce unrecorded alcohol consumption and attributable harm. The government's multi-level strategy of alcohol consumption and harm reduction should be pursued stringently and all the possible loop-holes for producers, sellers and distributors of illegal and/or unrecorded alcohol should be eliminated or at least critically reduced.
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Jargin S. Questionable information on poisonings by alcohol surrogates. Interdiscip Toxicol 2017; 9:83-84. [PMID: 28652850 PMCID: PMC5464682 DOI: 10.1515/intox-2016-0010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 11/15/2022] Open
Affiliation(s)
- Sergei Jargin
- Peoples' Friendship University of Russia, Moscow, Russia
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15
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Kim MS, Jeong SW, Choi SJ, Han JY, Kim SH, Yoon S, Oh JH, Lee K. Analysis of genomic responses in a rat lung model treated with a humidifier sterilizer containing polyhexamethyleneguanidine phosphate. Toxicol Lett 2016; 268:36-43. [PMID: 27989595 DOI: 10.1016/j.toxlet.2016.11.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/10/2016] [Accepted: 11/13/2016] [Indexed: 12/24/2022]
Abstract
The antimicrobial biocide polyhexamethyleneguanidine (PHMG) phosphate is the main ingredient in the commercially available humidifier disinfectant. PHMG phosphate-based humidifier disinfectants can cause pulmonary fibrosis and induce inflammatory and fibrotic responses both in vivo and in vitro. However, toxicological mechanisms including genomic alterations induced by inhalation exposure to PHMG phosphate have not been elucidated. Therefore, this study evaluated the toxicological effects of the PHMG phosphate-containing humidifier disinfectant. We used DNA microarray to identify global gene expression changes in rats treated with PHMG phosphate-containing humidifier disinfectant for 4 weeks and 10 weeks. Functional significance of differentially expressed genes (DEGs) was estimated by gene ontology (GO) analysis. Four weeks post-exposure, 320 and 392 DEGs were identified in female and male rats, respectively (>2-fold, p<0.05). Ten weeks post-exposure, 1290 and 995 DEGs were identified in females and males, respectively. Of these, 119 and 556 genes overlapped between females and males at 4 weeks and 10 weeks, respectively, post-PHMG phosphate exposure. In addition, 21 genes were upregulated and 4 genes were downregulated in response to PHMG phosphate in a time-dependent manner. Thus, we predict that changes in genomic responses could be a significant molecular mechanism underlying PHMG phosphate toxicity. Further studies are required to determine the detailed mechanism of PHMG phosphate-induced pulmonary toxicity.
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Affiliation(s)
- Min-Seok Kim
- Department of Inhalation Toxicology Research, Korea Institute of Toxicology, Jeonbuk 56212, Republic of Korea
| | - Seok Won Jeong
- Department of Research and Development, Genoplan Inc., Seoul 06221, Republic of Korea
| | - Seong-Jin Choi
- Department of Inhalation Toxicology Research, Korea Institute of Toxicology, Jeonbuk 56212, Republic of Korea
| | - Jin-Young Han
- Department of Inhalation Toxicology Research, Korea Institute of Toxicology, Jeonbuk 56212, Republic of Korea; Department of Human and Environmental Toxicology, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Sung-Hwan Kim
- Department of Inhalation Toxicology Research, Korea Institute of Toxicology, Jeonbuk 56212, Republic of Korea
| | - Seokjoo Yoon
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea; Department of Human and Environmental Toxicology, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Jung-Hwa Oh
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea; Department of Human and Environmental Toxicology, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Kyuhong Lee
- Department of Inhalation Toxicology Research, Korea Institute of Toxicology, Jeonbuk 56212, Republic of Korea; Department of Human and Environmental Toxicology, University of Science & Technology, Daejeon, 34113, Republic of Korea.
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16
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A fluorescent assay for γ-glutamyltranspeptidase via aggregation induced emission and its applications in real samples. Biosens Bioelectron 2016; 85:317-323. [DOI: 10.1016/j.bios.2016.05.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/06/2016] [Accepted: 05/10/2016] [Indexed: 02/01/2023]
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17
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Park K. An analysis of a humidifier disinfectant case from a toxicological perspective. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2016; 31:e2016013. [PMID: 27384221 PMCID: PMC4977967 DOI: 10.5620/eht.e2016013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/03/2016] [Accepted: 07/03/2016] [Indexed: 06/06/2023]
Abstract
An analysis of patients and fatalities due to exposure to polyhexamethylene guanidine (PHMG) shows that PHMG causes mainly lung diseases such as pulmonary fibrosis. However, no research on the other organs has been conducted on this matter yet. So, an in-depth discussion on toxicological techniques is needed to determine whether or not PHMG is toxic to organs other than just the lungs. For the test of target organ toxicity by PHMG exposure, a toxicokinetic study must first be conducted. However, measurement method for PHMG injected into the body has not yet been established because it is not easy to analyze polymer PHMG, so related base studies on analytical technique for PHMG including radio-labeling chemistry must come first. Moreover, research on exposure-biomarker and effect-biomarker must also be conducted, primarily related to clinical application. Several limitations seem to be expected to apply the biomarker study to the patient because much time has passed after exposure to the humidifier disinfectant. It is why a more comprehensive toxicological researches must be introduced to the causality for the victims.
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Affiliation(s)
- Kwangsik Park
- Correspondence: Kwangsik Park 60 Hwarang-ro 13-gil, Seongbuk-gu, Seoul 02748, Korea Tel: +82-2-940-4522 Fax: +82-2-940-4195 E-mail:
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18
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Lee SJ, Park JH, Lee JY, Jeong YJ, Song JA, Lee K, Kim DJ. Establishment of a mouse model for pulmonary inflammation and fibrosis by intratracheal instillation of polyhexamethyleneguanidine phosphate. J Toxicol Pathol 2016; 29:95-102. [PMID: 27182113 PMCID: PMC4866002 DOI: 10.1293/tox.2015-0067] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 12/17/2015] [Indexed: 12/18/2022] Open
Abstract
Although several animal models have been developed to study human pulmonary fibrosis, lack of a perfect model has raised the need for various animal models of pulmonary fibrosis. In this study, we evaluated the pulmonary effect of polyhexamethyleneguanidine phosphate instillation into the lungs of mice to determine the potential of these mice as a murine model of pulmonary fibrosis. Intratracheal instillation of polyhexamethyleneguanidine phosphate induced severe lung inflammation manifested by the infiltration of mononuclear cells and neutrophils and increased production of IL-6, TNF-α, CCL2 and CXCL1. The lung inflammation gradually increased until 28 days after polyhexamethyleneguanidine phosphate exposure, and increases of collagen deposition and TGF-β production, which are indicators of pulmonary fibrosis, were seen. Our study showed that intratracheal instillation of polyhexamethyleneguanidine phosphate induces pulmonary inflammation and fibrosis in mice.
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Affiliation(s)
- Sang Jin Lee
- Department of Biochemistry, College of Medicine, Konyang University, 158 Gwanjeodong-ro, Seo-gu, Daejeon 302-718, Republic of Korea; Inhalation Toxicology Center, Korea Institute of Toxicology, 30 Baekhak 1-Gil, Jeongeup-si, Jeollabuk-do 580-185, Republic of Korea
| | - Jong-Hwan Park
- Laboratory Animal Medicine, College of Veterinary Medicine, Chonnam National University, 77 Yongbong-ro, Buk-gu , Gwangju 61186, Republic of Korea
| | - Jun-Young Lee
- Department of Biochemistry, College of Medicine, Konyang University, 158 Gwanjeodong-ro, Seo-gu, Daejeon 302-718, Republic of Korea
| | - Yu-Jin Jeong
- Department of Biochemistry, College of Medicine, Konyang University, 158 Gwanjeodong-ro, Seo-gu, Daejeon 302-718, Republic of Korea
| | - Jeong Ah Song
- Inhalation Toxicology Center, Korea Institute of Toxicology, 30 Baekhak 1-Gil, Jeongeup-si, Jeollabuk-do 580-185, Republic of Korea
| | - Kyuhong Lee
- Inhalation Toxicology Center, Korea Institute of Toxicology, 30 Baekhak 1-Gil, Jeongeup-si, Jeollabuk-do 580-185, Republic of Korea; Toxicology and Pharmacology, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 305-350, Republic of Korea
| | - Dong-Jae Kim
- Laboratory Animal Resource Center, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang Daero, Hyeonpung-myeon, Dalseong-gun, Daegu 42988, Republic of Korea
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Asiedu-Gyekye IJ, Mahmood AS, Awortwe C, Nyarko AK. Toxicological assessment of polyhexamethylene biguanide for water treatment. Interdiscip Toxicol 2015; 8:193-202. [PMID: 27486381 PMCID: PMC4961918 DOI: 10.1515/intox-2015-0029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 08/28/2015] [Accepted: 09/10/2015] [Indexed: 02/05/2023] Open
Abstract
Polyhexamethylene biguanide (PHMB) is an antiseptic with antiviral and antibacterial properties used in a variety of products including wound care dressings, contact lens cleaning solutions, perioperative cleansing products, and swimming pool cleaners. There are regulatory concerns with regard to its safety in humans for water treatment. We decided to assess the safety of this chemical in Sprague-Dawley rats. PHMB was administered in a single dose by gavage via a stomach tube as per the manufacturer's instruction within a dose range of 2 mg/kg to 40 mg/kg. Subchronic toxicity studies were also conducted at doses of 2 mg/kg, 8 mg/kg and 32 mg/kg body weight and hematological, biochemical and histopathological findings of the major organs were assessed. Administration of a dose of 25.6 mg/kg, i.e. 1.6 mL of 0.4% PHMB solution (equivalent to 6.4x10(3) mg/L of 0.1% solution) resulted in 50% mortality. Histopathological analysis in the acute toxicity studies showed that no histopathological lesions were observed in the heart and kidney samples but 30% of the animals had mild hydropic changes in zone 1 of their liver samples, while at a dosage of 32 mg/kg in the subchronic toxicity studies, 50% of the animals showed either mild hepatocyte cytolysis with or without lymphocyte infiltration and feathery degeneration. Lymphocyte infiltration was, for the first time, observed in one heart sample, whereas one kidney sample showed mild tubular damage. The acute studies showed that the median lethal dose (LD50) is 25.6 mg/kg (LC50 of 1.6 mL of 0.4% PHMB. Subchronic toxicological studies also revealed few deleterious effects on the internal organs examined, as seen from the results of the biochemical parameters evaluated. These results have implications for the use of PHMB to make water potable.
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Affiliation(s)
- Isaac J Asiedu-Gyekye
- Department of Pharmacology and Toxicology, University of Ghana School of Pharmacy, College of Health Sciences, Legon, Ghana
| | - Abdulai Seidu Mahmood
- Department of Pathology, School of Biomedical and Allied Health Sciences, College of Health Sciences, Korle-Bu, Ghana
| | - Charles Awortwe
- Division of Pharmacology, Faculty of Health Sciences, University of Stellenbosch, Cape Town, South Africa
| | - Alexander K Nyarko
- Department of Pharmacology and Toxicology, University of Ghana School of Pharmacy, College of Health Sciences, Legon, Ghana
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Lachenmeier DW, Monakhova YB, Rehm J. Influence of unrecorded alcohol consumption on liver cirrhosis mortality. World J Gastroenterol 2014; 20:7217-7222. [PMID: 24966592 PMCID: PMC4064067 DOI: 10.3748/wjg.v20.i23.7217] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 01/10/2014] [Accepted: 03/06/2014] [Indexed: 02/06/2023] Open
Abstract
Unrecorded alcohol includes illegally distributed alcohol as well as homemade or surrogate alcohol which is unintended for consumption by humans (e.g., cosmetics containing alcohol). The highest unrecorded alcohol consumption occurs in Eastern Europe and some of these countries have an over proportional liver cirrhosis mortality. Compounds besides ethanol have been hypothesized as being responsible for this observation. On the other hand, chemical investigations were unable to prove that unrecorded alcohol regularly contains contaminants above toxicological thresholds. However, illegally produced spirits regularly contain higher percentages of alcohol (above 45% by volume), but for considerably less costs compared with licit beverages, potentially causing more problematic patterns of drinking. In this review, it is investigated whether patterns of drinking rather than product composition can explain the liver cirrhosis mortality rates. Statistical examination of World Health Organization country data shows that the originally detected correlation of the percentage of unrecorded alcohol consumption and liver cirrhosis mortality rates disappears when the data is adjusted for the prevalence of heavy episodic drinking. It may be concluded that there is currently a lack of data to demonstrate causality between the composition of illicit spirits (e.g., higher levels of certain contaminants in home-produced products) and liver toxicity on a population scale. Exceptions may be cases of poisoning with antiseptic liquids containing compounds such as polyhexamethyleneguanidine, which were reported to be consumed as surrogate alcohol in Russia, leading to an outbreak of acute cholestatic liver injury, histologically different from conventional alcoholic liver disease.
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21
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Rehm J, Kailasapillai S, Larsen E, Rehm MX, Samokhvalov AV, Shield KD, Roerecke M, Lachenmeier DW. A systematic review of the epidemiology of unrecorded alcohol consumption and the chemical composition of unrecorded alcohol. Addiction 2014; 109:880-93. [PMID: 24467748 DOI: 10.1111/add.12498] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 09/27/2013] [Accepted: 01/22/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Unrecorded alcohol constitutes about 30% of all alcohol consumed globally. The aims of this systematic review were to determine the epidemiology (occurrence, types, prevalence) of unrecorded alcohol consumption in different countries/regions, analyse the chemical composition of unrecorded alcohol and examine health outcomes caused by the consumption of unrecorded alcohol, based on either epidemiology or toxicology. METHODS A systematic search for, and qualitative analysis of, papers with empirical results on the different categories of unrecorded alcohol, based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. RESULTS Unrecorded alcohol was widespread in all regions of the world. Artisanal fermented beverages and spirits were the most common categories of unrecorded alcohol globally, and were available on all continents. In India, industrially produced spirits (country spirits) were most prevalent. In Russia and countries of the former Soviet Union, surrogate alcohols complemented artisanal spirits. Cross-border shopping was the most prevalent method of obtaining unrecorded alcohol in parts of Europe. Ethanol was the most harmful ingredient of unrecorded alcohol, and health consequences due to other ingredients found in unrecorded alcohol were scarce. However, as unrecorded alcohol is usually the least expensive form of alcohol available in many countries, it may contribute to higher rates of chronic and irregular heavy drinking. CONCLUSIONS Very large amounts of alcohol are produced globally that go unrecorded. The primary harm from this kind of alcohol arises from the fact that it is typically much cheaper than licit alcohol.
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Affiliation(s)
- Jürgen Rehm
- Social and Epidemiological Research (SER) Department, Centre for Addiction and Mental Health (CAMH), Toronto, Canada; Institute of Medical Sciences, University of Toronto (UofT), Toronto, Canada; Dalla Lana School of Public Health, UofT, Toronto, Canada; Dept. of Psychiatry, Faculty of Medicine, UofT, Toronto, Canada; PAHO/WHO Collaborating Centre for Mental Health & Addiction, Toronto, Canada; Epidemiological Research Unit, Technische Universität Dresden, Klinische Psychologie & Psychotherapie, Dresden, Germany
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22
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Jung HN, Zerin T, Podder B, Song HY, Kim YS. Cytotoxicity and gene expression profiling of polyhexamethylene guanidine hydrochloride in human alveolar A549 cells. Toxicol In Vitro 2014; 28:684-92. [PMID: 24583197 DOI: 10.1016/j.tiv.2014.02.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/24/2014] [Accepted: 02/15/2014] [Indexed: 11/28/2022]
Abstract
In Korea, lung disease of children and pregnant women associated with humidifier disinfectant use has become a major concern. A common sterilizer is polyhexamethylene guanidine (PHMG), a member of the guanidine family of antiseptics. This study was done to elucidate the putative cytotoxic effect of PHMG and the PHMG-mediated altered gene expression in human alveolar epithelial A549 cells in vitro. Cell viability analyses revealed the potent cytotoxicity of PHMG, with cell death evident at as low as 5 μg/mL. Death was dose- and time-dependent, and was associated with formation of intracellular reactive oxygen species, and apoptosis significantly, at even 2 μg/mL concentration. The gene expression profile in A549 cells following 24 h exposure to 5 μg/mL of PHMG was investigated using DNA microarray analysis. Changes in gene expression relevant to the progression of cell death included induction of genes related to apoptosis, autophagy, fibrosis, and cell cycle. However, the expressions of genes encoding antioxidant and detoxifying enzymes were down-regulated or not affected. The altered expression of selected genes was confirmed by quantitative reverse transcription-polymerase chain reaction and Western blot analyses. The collective data suggest that PHMG confers cellular toxicity through the generation of intracellular reactive oxygen species and alteration of gene expression.
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Affiliation(s)
- Ha-Na Jung
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea
| | - Tamanna Zerin
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea
| | - Biswajit Podder
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea
| | - Ho-Yeon Song
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea.
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, South Korea.
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Hou X, Yu Q, Zeng F, Yu C, Wu S. Ratiometric fluorescence assay for γ-glutamyltranspeptidase detection based on a single fluorophore via analyte-induced variation of substitution. Chem Commun (Camb) 2014; 50:3417-20. [DOI: 10.1039/c4cc00473f] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Acute cardiovascular toxicity of sterilizers, PHMG, and PGH: severe inflammation in human cells and heart failure in zebrafish. Cardiovasc Toxicol 2013; 13:148-60. [PMID: 23225114 DOI: 10.1007/s12012-012-9193-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In 2011, dozens of children and pregnant women in Korea died by exposure to sterilizer for household humidifier, such as Oxy(®) and Cefu(®). Until now, however, it remains unknown how the sterilizer affect the human health to cause the acute deaths. To find its toxicity for organ, we investigated the putative toxicity of the sterilizer in the cardiovascular system. The sterilizers, polyhexamethylene guanidine phosphate (PHMG, Cefu(®)), and oligo-[2-(2-ethoxy)-ethoxyethyl)-guanidinium-chloride (PGH, Oxy(®)) were treated to human lipoproteins, macrophages, and dermal fibroblast cells. The PGH and PHMG at normal dosages caused severe atherogenic process in human macrophages, cytotoxic effect, and aging in human dermal cell. Zebrafish embryos, which were exposed to the sterilizer, showed early death with acute inflammation and attenuated developmental speed. All zebrafish exposed to the working concentration of PHMG (final 0.3 %) and PGH (final 10 mM) died within 70 min and displayed acute increases in serum triacylglycerol level and fatty liver induction. The dead zebrafish showed severe accumulation of fibrous collagen in the bulbous artery of the heart with elevation of reactive oxygen species. In conclusion, the sterilizers showed acute toxic effect in blood circulation system, causing by severe inflammation, atherogenesis, and aging, with embryo toxicity.
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Unrecorded alcohol consumption in Russia: toxic denaturants and disinfectants pose additional risks. Interdiscip Toxicol 2012; 4:198-205. [PMID: 22319254 PMCID: PMC3274728 DOI: 10.2478/v10102-011-0030-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 11/10/2011] [Accepted: 12/10/2011] [Indexed: 01/16/2023] Open
Abstract
In 2005, 30% of all alcohol consumption in Russia was unrecorded. This paper describes the chemical composition of unrecorded and low cost alcohol, including a toxicological evaluation. Alcohol products (n=22) from both recorded and unrecorded sources were obtained from three Russian cities (Saratov, Lipetsk and Irkutsk) and were chemically analyzed. Unrecorded alcohols included homemade samogons, medicinal alcohols and surrogate alcohols. Analysis included alcoholic strength, levels of volatile compounds (methanol, acetaldehyde, higher alcohols), ethyl carbamate, diethyl phthalate (DEP) and polyhexamethyleneguanidine hydrochloride (PHMG). Single samples showed contamination with DEP (275–1269 mg/l) and PHMG (515 mg/l) above levels of toxicological concern. Our detailed chemical analysis of Russian alcohols showed that the composition of vodka, samogon and medicinal alcohols generally did not raise major public health concerns other than for ethanol. It was shown, however, that concentration levels of DEP and PHMG in some surrogate alcohols make these samples unfit for human consumption as even moderate drinking would exceed acceptable daily intakes.
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