151
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Rudmann DG, Bertrand L, Zuraw A, Deiters J, Staup M, Rivenson Y, Kuklyte J. Building a nonclinical pathology laboratory of the future for pharmaceutical research excellence. Drug Discov Today 2023; 28:103747. [PMID: 37598916 DOI: 10.1016/j.drudis.2023.103747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/02/2023] [Accepted: 08/14/2023] [Indexed: 08/22/2023]
Abstract
We describe a roadmap for a fully digital artificial intelligence (AI)-augmented nonclinical pathology laboratory across three continents. Underpinning the design are Good Laboratory Practice (GLP)-validated laboratory information management systems (LIMS), whole slide-scanners (WSS), image management systems (IMS), and a digital microscope intended for use by the nonclinical pathologist. Digital diagnostics are supported by tools that include AI-based virtual staining and deep learning-based decision support. Implemented during the COVID-19 pandemic, the initial digitized workflow largely mitigated disruption of pivotal nonclinical studies required to support pharmaceutical clinical testing. We believe that this digital transformation of our nonclinical pathology laboratories will promote efficiency and innovation in the future and enhance the quality and speed of drug development decision making.
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Affiliation(s)
- D G Rudmann
- Charles River Laboratories, Digital Toxicologic Pathology, Discovery and Safety Assessment, Wilmington, DE, USA.
| | - L Bertrand
- Charles River Laboratories, Digital Toxicologic Pathology, Discovery and Safety Assessment, Wilmington, DE, USA
| | - A Zuraw
- Charles River Laboratories, Digital Toxicologic Pathology, Discovery and Safety Assessment, Wilmington, DE, USA
| | - J Deiters
- Charles River Laboratories, Digital Toxicologic Pathology, Discovery and Safety Assessment, Wilmington, DE, USA
| | - M Staup
- Charles River Laboratories, Digital Toxicologic Pathology, Discovery and Safety Assessment, Wilmington, DE, USA
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152
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Mazer-Amirshahi M, Stolbach AI, Ye P. ACMT Position Statement: Position on the Recent Judicial Challenge of U.S. Food and Drug Administration Approval of Mifepristone. J Med Toxicol 2023; 19:414-415. [PMID: 37548894 PMCID: PMC10522555 DOI: 10.1007/s13181-023-00960-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023] Open
Affiliation(s)
- Maryann Mazer-Amirshahi
- Georgetown University School of Medicine, Washington, DC, USA
- Department of Emergency Medicine, MedStar Washington Hospital Center, Washington, DC, USA
| | | | - Peggy Ye
- Georgetown University School of Medicine, Washington, DC, USA
- Department of Obstetrics and Gynecology, Medstar Washington Hospital Center, Washington, DC, USA
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153
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Keenan M, Titelbaum N, Suen K, Murray B, Wax P, Kiernan E. Factors Affecting the Choice to Specialize in Medical Toxicology. J Med Toxicol 2023; 19:389-397. [PMID: 37639079 PMCID: PMC10522556 DOI: 10.1007/s13181-023-00965-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/12/2023] [Accepted: 08/17/2023] [Indexed: 08/29/2023] Open
Abstract
INTRODUCTION Medical toxicology is a small but growing specialty. To ensure that the specialty continues to grow and attract strong candidates, it is important to understand what influences physicians to pursue medical toxicology training. This would allow for targeted interventions to recruit strong candidates to the field. METHODS A cross-sectional survey was sent via email to current medical toxicology fellows and to medical toxicologists who completed fellowship in the last 5 years. ACMT listservs were utilized to target recipients. The survey was created through an iterative writing process among the study authors. Responses to the survey were recorded in REDCap. Descriptive statistics were obtained and analyzed. RESULTS A total of 126 participants responded to the survey request (46 fellows and 80 recent graduates). Most were primarily trained in emergency medicine. Interest in medical toxicology usually started during residency when exposure to the field was highest. Most respondents cite a mentor as a primary influence in pursuing medical toxicology training. CONCLUSIONS Among current fellows and recent graduates of medical toxicology, having a mentor in the field of medical toxicology, having exposure to medical toxicology during residency, and participating in a clinical rotation in medical toxicology were common shared experiences that led to the decision to subspecialize in the field. These results may guide targeted intervention to continue to recruit strong candidates to medical toxicology.
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Affiliation(s)
- Michael Keenan
- SUNY Upstate Medical University, 750 East Adams St, Syracuse, NY, 13210, USA.
| | | | - Kyle Suen
- Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA
| | - Brian Murray
- Wright State University Boonshoft School of Medicine, 3640 Colonel Glenn Hwy, Fairborn, OH, 45424, USA
| | - Paul Wax
- University of Texas Southwestern, 5323 Harry Hines Blvd, Dallas, TX, 75490, USA
- American College of Medical Toxicology, 10645 N. Tatum Blvd Suite 200-111, Phoenix, AZ, 85028, USA
| | - Emily Kiernan
- Emory School of Medicine, 100 Woodruff Circle, Atlanta, GA, 30322, USA
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154
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Murphy NG, Durr KM, Wolfe C. Just the facts: whole bowel irrigation. CAN J EMERG MED 2023; 25:796-798. [PMID: 37737538 DOI: 10.1007/s43678-023-00569-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 07/26/2023] [Indexed: 09/23/2023]
Affiliation(s)
- Nancy G Murphy
- Department of Emergency Medicine, Halifax Infirmary, Halifax, NS, Canada.
- Atlantic Canada Poison Centre, Halifax, NS, Canada.
| | - Kevin M Durr
- Department of Emergency Medicine, The Ottawa Hospital, Ottawa, ON, Canada
| | - Caitlin Wolfe
- Department of Emergency Medicine, Halifax Infirmary, Halifax, NS, Canada
- Atlantic Canada Poison Centre, Halifax, NS, Canada
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155
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Madiedo-Podvrsan S, Sebillet L, Martinez T, Bacari S, Zhu F, Cattelin M, Leclerc E, Merlier F, Jellali R, Lacroix G, Vayssade M. Development of a lung-liver in vitro coculture model for inhalation-like toxicity assessment. Toxicol In Vitro 2023; 92:105641. [PMID: 37437822 DOI: 10.1016/j.tiv.2023.105641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 06/09/2023] [Accepted: 07/05/2023] [Indexed: 07/14/2023]
Abstract
Animal models are considered prime study models for inhalation-like toxicity assessment. However, in light of animal experimentation reduction (3Rs), we developed and investigated an alternative in vitro method to study systemic-like responses to inhalation-like exposures. A coculture platform was established to emulate inter-organ crosstalks between a pulmonary barrier, which constitutes the route of entry of inhaled compounds, and the liver, which plays a major role in xenobiotic metabolism. Both compartments (Calu-3 insert and HepG2/C3A biochip) were jointly cultured in a dynamically-stimulated environment for 72 h. The present model was characterized using acetaminophen (APAP), a well-documented hepatotoxicant, to visibly assess the passage and circulation of a xenobiotic through the device. Based on viability and functionality parameters the coculture model showed that the bronchial barrier and the liver biochip can successfully be maintained viable and function in a dynamic coculture setting for 3 days. In a stress-induced environment, present results reported that the coculture model emulated active and functional in vitro crosstalk that seemingly was responsive to xenobiotic exposure doses. The hepatic and bronchial cellular responses to xenobiotic exposure were modified in the coculture setting as they displayed earlier and stronger detoxification processes, highlighting active and functional organ crosstalk between both compartments.
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Affiliation(s)
- Sabrina Madiedo-Podvrsan
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Louise Sebillet
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Thomas Martinez
- French National Institute for Industrial Environment and Risks, INERIS, Direction milieux et impacts sur le vivant, Verneuil-en-Halatte, France
| | - Salimata Bacari
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Fengping Zhu
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Marie Cattelin
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Eric Leclerc
- CNRS IRL 2820, Laboratory for Integrated Micro Mechatronic Systems, Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
| | - Franck Merlier
- Université de technologie de Compiègne, UPJV, CNRS Enzyme and Cell Engineering Laboratory, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Rachid Jellali
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France
| | - Ghislaine Lacroix
- French National Institute for Industrial Environment and Risks, INERIS, Direction milieux et impacts sur le vivant, Verneuil-en-Halatte, France
| | - Muriel Vayssade
- Université de technologie de Compiègne, CNRS, Biomechanics and Bioengineering, Centre de recherche Royallieu - CS 60319, 60203 Compiègne Cedex, France.
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156
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Slavik CE, Philipsborn R, Peters E. Educating families about the impacts of wildfire smoke on children's health: opportunities for healthcare professionals. BMJ Paediatr Open 2023; 7:e002187. [PMID: 37865399 PMCID: PMC10603419 DOI: 10.1136/bmjpo-2023-002187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2023] Open
Affiliation(s)
- Catherine E Slavik
- Center for Science Communication Research, School of Journalism and Communication, University of Oregon, Eugene, Oregon, USA
| | - Rebecca Philipsborn
- Division of General Pediatrics and Gangarosa Department of Environmental Health, Emory University, Atlanta, Georgia, USA
- Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Ellen Peters
- Center for Science Communication Research, School of Journalism and Communication, University of Oregon, Eugene, Oregon, USA
- Department of Psychology, University of Oregon, Eugene, Oregon, USA
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157
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Trytell A, Osekowski M, Zentner D, Nehme Z, James P, Pflaumer A, Semsarian C, Ingles J, Stub D, La Gerche A, Paratz ED. Prevalence of illicit drug use in young patients with sudden cardiac death. Heart Rhythm 2023; 20:1349-1355. [PMID: 37295741 DOI: 10.1016/j.hrthm.2023.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/21/2023] [Accepted: 06/04/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Illicit drug use may accelerate coronary disease and cardiac hypertrophy or stimulate arrhythmias. Rates of illicit drug use in young patients with sudden cardiac death (SCD) are uncertain. OBJECTIVE The purpose of this study was to identify rates of illicit drug use in young patients with SCD. METHODS A prospective statewide registry identified out-of-hospital patients with cardiac arrest aged 18-50 years from April 2019 to April 2021. Clinical characteristics were compared between patients with and without illicit drug use (defined by toxicological results or reported regular use). Illicit drugs included amphetamine-type substances, cocaine, heroin, cannabis, and other drugs. RESULTS A total of 554 (40.2%) of 1378 patients had confirmed cardiac cause of out-of-hospital cardiac arrest, with 523 undergoing toxicological assessment. There were 170 patients (32.5%) having either positive toxicology for illicit drugs (n = 138) or negative toxicology but reported regular drug use (n = 32). Patients with SCD and illicit drug use were more commonly male (81.2% vs 72.3%; P = .028), smokers (38.8% vs 19.8%; P ≤ .0001), and excess alcohol drinkers (30.6% vs 20.6%; P = .012) and had a psychiatric diagnosis (38.8% vs 25.7%; P = .002), lower body mass index (29.4 kg/m2 vs 31.7 kg/m2; P = .0063), and lower rates of hypertension (10.6% vs 18.6%; P = .019). Death commonly occurred while sedentary (47.5%) or during sleep (45.8%). Accounting for these baseline differences, there were no differences in rates of coronary disease or cardiomyopathy. Cannabis (n = 106) was the most common illicit drug identified and polysubstance abuse occurred frequently (n = 25). CONCLUSION Approximately one-third of young patients with SCD have positive toxicology at the time of death or reported frequent use of illicit drugs, with high rates of polysubstance abuse.
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Affiliation(s)
- Adam Trytell
- Department of Cardiology, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia
| | - Michael Osekowski
- Department of Cardiology, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia
| | - Dominica Zentner
- Department of Cardiology, Royal Melbourne Hospital, Parkville, Victoria, Australia; Department of Cardiology, Royal Melbourne Hospital Clinical School, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Ziad Nehme
- Ambulance Victoria, Doncaster, Victoria, Australia; Department of Paramedicine, Monash University, Melbourne, Victoria, Australia; Department of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Paul James
- Department of Cardiology, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Andreas Pflaumer
- Department of Cardiology, The Royal Children's Hospital, Melbourne, Victoria, Australia; Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia; Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Chris Semsarian
- Agnes Ginges Centre for Molecular Cardiology at Centenary Institute, The University of Sydney, Sydney, New South Wales, Australia
| | - Jodie Ingles
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Dion Stub
- Ambulance Victoria, Doncaster, Victoria, Australia; Department of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia; Department of Cardiology, Alfred Hospital, Prahran, Victoria, Australia
| | - Andre La Gerche
- Department of Cardiology, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia; Department of Cardiology, Alfred Hospital, Prahran, Victoria, Australia; Baker Heart and Diabetes Institute, Prahran, Victoria, Australia; Department of Medicine, Dentistry and Health Sciences, Melbourne University, Parkville, Victoria, Australia
| | - Elizabeth D Paratz
- Department of Cardiology, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia; Department of Cardiology, Alfred Hospital, Prahran, Victoria, Australia; Baker Heart and Diabetes Institute, Prahran, Victoria, Australia; Department of Medicine, Dentistry and Health Sciences, Melbourne University, Parkville, Victoria, Australia.
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158
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Jiang Y, Li Q, Wang Y, Jin J, Wei W, Zhang Y, Yang H. Polyester microplastic fibers induce mitochondrial damage, apoptosis and oxidative stress in Daphnia carinata, accompanied by changes in apoptotic and ferroptosis pathway. Aquat Toxicol 2023; 263:106690. [PMID: 37708703 DOI: 10.1016/j.aquatox.2023.106690] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/22/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023]
Abstract
With the widespread utilization of plastic products, microplastics (MPs) have merged as a newfound environmental contaminant in the United States, and the bulk of these MPs in the environment manifest as fibrous structures. Concerns have also been voiced regarding the potential hazards posed by microplastic fibers (MFs). However, research examining the toxicity of MFs, particularly in relation to planktonic organisms, remains severely limited. Meanwhile, polyester fiber materials find extensive applications across diverse industries. As a result, this investigation delved into the toxicology of polyester microplastic fibers (PET-MFs) with a focus on their impact on Daphnia carinata (D. carinata), a freshwater crustacean. Newly hatched D. carinata were subjected to varying concentrations of PET-MFs (0, 50, and 500 MFs/mL) to scrutinize the accumulation of PET-MFs within these organisms and their resultant toxicity. The outcomes revealed that D. carinata was capable of ingesting PET-MFs, leading to diminished rates of survival and reproduction. These effects were accompanied by mitochondrial impairment, heightened mitochondrial count, apoptosis, escalated generation of reactive oxygen species, augmented activity of antioxidant enzymes, and distinct patterns of gene expression. Interestingly, when comparing the group exposed to 50 MFs/mL with the one exposed to 500 MFs/mL, it was observed that the former triggered a more pronounced degree of mitochondrial damage, apoptosis, and oxidative stress. This phenomenon could be attributed to the fact that brief exposure to 500 MFs/mL resulted in greater mortality, eliminating individuals with lower adaptability. Those that survived managed to regulate elevated in vivo reactive oxygen species levels through an increase in glutathione S-transferase content, thereby establishing an adaptive mechanism. Low concentrations did not induce direct mortality, yet PET-MFs continued to inflict harm within the organism. RNA-seq analysis unveiled significant alterations in 279 and 55 genes in the 50 MFs/mL and 500 MFs/mL exposure groups, respectively. Functional enrichment analysis of the 50 MFs/mL group indicated involvement of the apoptosis pathway and ferroptosis pathway in the toxic effects exerted by PET-MFs on D. carinata. This study imparts valuable insights into the toxicological ramifications of PET-MFs on D. carinata, underscoring their potential risks within aquatic ecosystems.
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Affiliation(s)
- Yinan Jiang
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China
| | - Qing Li
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China
| | - Yuting Wang
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China
| | - Jiaqi Jin
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China
| | - Wenzhi Wei
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China
| | - Yingying Zhang
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China
| | - Hui Yang
- College of Animal Science and Technology, Yangzhou University, 48 Wenhui Road, Yangzhou, Jiangsu 225009, China.
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159
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Rivera D, Onisko N, Cao JD, Koyfman A, Long B. High risk and low prevalence diseases: Metformin toxicities. Am J Emerg Med 2023; 72:107-112. [PMID: 37517113 DOI: 10.1016/j.ajem.2023.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/12/2023] [Indexed: 08/01/2023] Open
Abstract
INTRODUCTION Metformin toxicity is a rare but serious condition that carries with it a high rate of morbidity and mortality. OBJECTIVE This review highlights the pearls and pitfalls of metformin toxicity, including diagnosis, initial resuscitation, and management in the emergency department (ED) based on current evidence. DISCUSSION Metformin is a common medication used for treatment of diabetes mellitus. Metformin toxicity is a spectrum of conditions that may be differentiated into three subgroups: metformin-associated lactic acidosis (MALA), metformin-induced lactic acidosis (MILA), and metformin-unrelated lactic acidosis (MULA). MILA is a condition found predominantly in patients chronically taking metformin or those with large acute overdoses. Conversely, MULA occurs in patients on metformin but with a critical illness stemming from a separate cause. MALA is rare but the most severe form, with mortality rates that reach 50%. Differentiating these entities is difficult in the ED setting without obtaining metformin levels. Patients with metformin toxicity present with nonspecific gastrointestinal symptoms and vital sign abnormalities. Laboratory analysis will reveal a high lactate with anion gap metabolic acidosis. Patients presenting with elevated lactate levels in the setting of metformin use should be considered at risk for the most severe form, MALA. Patients with MALA require aggressive treatment with intravenous fluids, treatment of any concomitant condition, and early consideration of hemodialysis, along with specialist consultation such as nephrology and toxicology. CONCLUSIONS An understanding of metformin toxicity can assist emergency clinicians in diagnosing and managing this potentially deadly disease.
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Affiliation(s)
- Daniel Rivera
- Department of Emergency Medicine, UT Southwestern, Dallas, TX, USA
| | - Nancy Onisko
- Department of Emergency Medicine, UT Southwestern, Dallas, TX, USA
| | - James Dazhe Cao
- Department of Emergency Medicine, UT Southwestern, Dallas, TX, USA.
| | - Alex Koyfman
- Department of Emergency Medicine, UT Southwestern, Dallas, TX, USA
| | - Brit Long
- Department of Emergency Medicine, Brooke Army Medical Center, Fort Sam Houston, TX, USA.
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160
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Bornstein K, Gryan G, Chang ES, Marchler-Bauer A, Schneider VA. The NIH Comparative Genomics Resource: addressing the promises and challenges of comparative genomics on human health. BMC Genomics 2023; 24:575. [PMID: 37759191 PMCID: PMC10523801 DOI: 10.1186/s12864-023-09643-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Comparative genomics is the comparison of genetic information within and across organisms to understand the evolution, structure, and function of genes, proteins, and non-coding regions (Sivashankari and Shanmughavel, Bioinformation 1:376-8, 2007). Advances in sequencing technology and assembly algorithms have resulted in the ability to sequence large genomes and provided a wealth of data that are being used in comparative genomic analyses. Comparative analysis can be leveraged to systematically explore and evaluate the biological relationships and evolution between species, aid in understanding the structure and function of genes, and gain a better understanding of disease and potential drug targets. As our knowledge of genetics expands, comparative genomics can help identify emerging model organisms among a broader span of the tree of life, positively impacting human health. This impact includes, but is not limited to, zoonotic disease research, therapeutics development, microbiome research, xenotransplantation, oncology, and toxicology. Despite advancements in comparative genomics, new challenges have arisen around the quantity, quality assurance, annotation, and interoperability of genomic data and metadata. New tools and approaches are required to meet these challenges and fulfill the needs of researchers. This paper focuses on how the National Institutes of Health (NIH) Comparative Genomics Resource (CGR) can address both the opportunities for comparative genomics to further impact human health and confront an increasingly complex set of challenges facing researchers.
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Affiliation(s)
| | - Gary Gryan
- The MITRE Corporation, 7525 Colshire Dr, McLean, VA, USA
| | - E Sally Chang
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, 20894, USA
| | - Aron Marchler-Bauer
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, 20894, USA
| | - Valerie A Schneider
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, 20894, USA.
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161
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Kim JI, Park MY, Kwon E, Kang HJ, Kang BC. CD19 chimeric antigen receptor T cell therapy in leukemia xenograft mouse: Anti-leukemic efficacy, kinetics, and 4-week single-dose toxicity. Toxicol Appl Pharmacol 2023; 475:116628. [PMID: 37506978 DOI: 10.1016/j.taap.2023.116628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/22/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
CD19 Chimeric antigen receptor T (CAR-T) cell therapy has shown a promising response rate for relapsed/refractory B-cell malignancies. However, serious side effects such as cytokine release syndrome and immune effector cell-associated neurotoxicity syndrome arose in early case reports. Though several preclinical and clinical studies of CAR-T cell therapy have been reported, there is a lack of toxicological assessments. This study was carried out as a preclinical assessment of CD19 CAR-T cell therapy, including the anti-leukemic efficacy, kinetics in peripheral blood, and 4-week single-dose toxicity evaluation in leukemia xenograft mice. Leukemia xenograft mice model was established by injecting 1.0 × 105 cells/mouse of luciferase-labeled human B cell acute lymphoblastic leukemia (B-ALL) cell line via the tail vein, and after 3 days, 2.0 or 4.0 × 106 cells/mouse of CD19 CAR-T cells were injected intravenously. CD19 CAR-T cells showed significant anti-leukemic efficacy, showing inhibition of tumor progression in the bioluminescence-based in-vivo imaging system. In the kinetics study using qPCR, CAR-T cells peaked in peripheral blood on day 60 in males and day 30 in females. In a 4-week single-dose toxicity study, CD19 CAR-T cell injected groups showed no mortality and toxicological signs, or changes in body weight, food/water consumption, hematology, clinical chemistry, organ weights, and histopathology compared to control groups. These results suggested that 4.0 × 106 cells/mouse of CD19 CAR-T cells were effective in B-ALL xenograft mice without serious side effects, so the no-observed adverse effect level (NOAEL) was estimated to be higher than 4.0 × 106 cells/mouse, under the condition examined in the current study.
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Affiliation(s)
- Joo-Il Kim
- Graduate School of Translational Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Mi-Young Park
- Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Euna Kwon
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyoung Jin Kang
- Department of Pediatrics, Seoul National University College of Medicine, Seoul National University Cancer Research Institute, Seoul National University Children's Hospital, Seoul, Korea.
| | - Byeong-Cheol Kang
- Graduate School of Translational Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea; Biomedical Center for Animal Resource and Development, Seoul National University College of Medicine, Seoul, Republic of Korea; Designed Animal Resource Center, Institute of Green Bio Science Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Republic of Korea.
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162
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Stephenson L, Van Den Heuvel C, Byard RW. Socioeconomic and psychosocial determinants of substance misuse - a national perspective. Forensic Sci Med Pathol 2023:10.1007/s12024-023-00702-6. [PMID: 37682517 DOI: 10.1007/s12024-023-00702-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2023] [Indexed: 09/09/2023]
Abstract
Accurate estimates of population drug use and an understanding of the factors that influence substance choice are essential for the development of appropriate and targeted prevention strategies and campaigns. This review aims to provide an overview of the socioeconomic and psychosocial factors that influence substance use patterns within the Australian population through exploration of current and historical examples of substance misuse. Australia's comparatively large online drug market is reflective of the country's relative geographic isolation and high local drug prices. Legislation, particularly relating to cannabis cultivation and personal use, has evolved significantly in response to increased scientific and commercial applications and changing attitudes towards medical and personal use. Methylamphetamine use is disproportionately high, attributed to Australia's geographic location, high rates of local manufacture, steady cost, and increased purity. Despite the increased cost of cocaine over time, the profile of users appears to dictate rates of use. The prevalence of injecting drug use is driven by a lack of education, perceived risk, stigma, and other social factors. Additionally, psychosocial factors also contribute to substance misuse among specific population subgroups such as petrol sniffing among Indigenous Australians. Understanding the reasons for geographical variability in illicit drug use assists in the interpretation of substance-associated behavior in specific groups/populations and in guiding future intervention efforts and predictions of emerging trends. In addition, an understanding of factors influencing local drug usage may assist forensic practitioners in evaluating the occurrence and effects of particular substances that may emerge as significant factors in drug-related deaths.
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Affiliation(s)
- Lilli Stephenson
- School of Biomedicine, Level 2 Helen Mayo North, The University of Adelaide, Frome Road, Adelaide, 5005, SA, Australia.
| | - Corinna Van Den Heuvel
- School of Biomedicine, Level 2 Helen Mayo North, The University of Adelaide, Frome Road, Adelaide, 5005, SA, Australia
| | - Roger W Byard
- School of Biomedicine, Level 2 Helen Mayo North, The University of Adelaide, Frome Road, Adelaide, 5005, SA, Australia
- Forensic Science SA (FSSA), Adelaide, South Australia, 5000, Australia
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163
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Yafout M, Aït Mouss R, Bouchafra H, Zarayby L, Sbai El-Otmani I. Overview of the bioanalytical methods used for the determination of benzodiazepines in biological samples and their suitability for emergency toxicological analysis. J Pharmacol Toxicol Methods 2023; 123:107294. [PMID: 37468080 DOI: 10.1016/j.vascn.2023.107294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023]
Abstract
Benzodiazepines are one of the most widely used classes of drugs around the world. They are medically used in different therapeutic areas including insomnia, anxiety, epilepsy, and anesthesia. Unfortunately, these drugs are very widespread in the illicit market for recreational purposes and cause drug dependence, traffic accidents, and criminality. Furthermore, benzodiazepine misuse leads to acute poisoning cases that often end up in hospital emergency rooms. Therefore, it is crucial for hospitals to possess straightforward and efficient bioanalytical techniques that enable the swift detection of benzodiazepines in biological samples. This review provides a general overview of the different bioanalytical techniques used for the detection and quantification of benzodiazepines in biological samples and emphasizes their suitability for emergency toxicological analyzes.
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Affiliation(s)
- Mohamed Yafout
- Laboratory of drug sciences, biomedical research, and biotechnology. Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Morocco.
| | - Rachid Aït Mouss
- Laboratory of drug sciences, biomedical research, and biotechnology. Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Morocco
| | - Houda Bouchafra
- Laboratory of drug sciences, biomedical research, and biotechnology. Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Morocco
| | - Lhoussaine Zarayby
- Laboratory of drug sciences, biomedical research, and biotechnology. Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Morocco
| | - Ibrahim Sbai El-Otmani
- Laboratory of drug sciences, biomedical research, and biotechnology. Faculty of Medicine and Pharmacy, Hassan II University of Casablanca, Morocco
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164
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Abstract
Electronic nicotine delivery systems (ENDS), which are becoming increasingly popular in many parts of the world, have recently become more sophisticated in terms of their more active content and better controlled vaporisation. This review begins by describing how cigarette smoking led to the development of ENDS as a means of combatting nicotine addiction. ENDS are usually categorised as belonging to one of only three main generations, but a fourth has been added in order to differentiate the latest, most powerful, most advanced and innovative that have improved heating efficiency. Descriptions of the principal substances contained in ENDS are followed by considerations concerning the risk of toxicity due to the presence of albeit low concentrations of such a variety of compounds inhaled over a long time, and the increasingly widespread use of ENDS as a means of smoking illicit drugs. We also review the most widely used pharmacotherapeutic approaches to smoking cessation, and recent epidemiological data showing that ENDS can help some people to stop smoking. However, in order to ensure their appropriate regulation, there is a need for higher-quality evidence concerning the health effects and safety of ENDS, and their effectiveness in discouraging tobacco smoking.
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Affiliation(s)
- Mariaelvina Sala
- Institute of Neuroscience, CNR-Milan Unit, c/o Bldg. U28, University of Milano-Bicocca, Via Follereau 3, 20854 Vedano al Lambro, MB, Italy; NeuroMi Milan Center for Neuroscience University of Milano Bicocca,Italy.
| | - Cecilia Gotti
- Institute of Neuroscience, CNR-Milan Unit, c/o Bldg. U28, University of Milano-Bicocca, Via Follereau 3, 20854 Vedano al Lambro, MB, Italy; NeuroMi Milan Center for Neuroscience University of Milano Bicocca,Italy
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165
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Bertani S, Donadi A, Franchi J, Vinco F, Cardin R, Federico D, Tagliavini A, Zannoni S, Pergher M, Pecoraro M, Breda M. Blood microsampling in cynomolgus monkey and evaluation of plasma PK parameters in comparison to conventional sampling. J Pharmacol Toxicol Methods 2023; 123:107298. [PMID: 37480964 DOI: 10.1016/j.vascn.2023.107298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/03/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023]
Abstract
Microsampling, a reduced volume sampling method, has successfully gained attention at the International Conference on Harmonization (ICH) level and established benefits support its use in Toxicokinetic (TK) studies. These improved sampling techniques are less invasive and in large animal species improve animal welfare (refinement). To evaluate if the plasma concentrations of drugs were influenced by the blood sampling method, the traditional method from femoral vein and microsampling from tail vein in Cynomolgus monkeys were compared. The pharmacokinetic parameters (Cmax, Tmax and AUC) of four drugs (selected based on acid-base and volume of distribution properties) in non-human primate were correlated. The plasma samples were quantified using standard LC-MS/MS methods, qualified to evaluate the precision and accuracy before the analysis of real samples. The results reported in this work demonstrated the suitability of microsampling in supporting PK/TK studies in non-human primates. The data show that the exposure of drugs tested after blood collection using standard procedure from femoral vein and microsampling from tail vein is correlated and is not influenced by acid-base characteristics and volume of distribution.
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Affiliation(s)
- Simone Bertani
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Alberto Donadi
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Jessica Franchi
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Federica Vinco
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Rossella Cardin
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Denise Federico
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Alessia Tagliavini
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Simone Zannoni
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Marco Pergher
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Michela Pecoraro
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy
| | - Massimo Breda
- Aptuit (Verona) Srl, an Evotec Company, Campus Levi Montalcini, Verona, Italy.
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166
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Cao Z, Liu Y, Chen S, Wang W, Yang Z, Chen Y, Jiao S, Huang W, Chen L, Sun L, Li Z, Zhang L. Discovery of novel carboxylesterase 2 inhibitors for the treatment of delayed diarrhea and ulcerative colitis. Biochem Pharmacol 2023; 215:115742. [PMID: 37567318 DOI: 10.1016/j.bcp.2023.115742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Human carboxylesterase 2 (hCES2) is an enzyme that metabolizes irinotecan to SN-38, a toxic metabolite considered a significant source of side effects (lethal delayed diarrhea). The hCES2 inhibitors could block the hydrolysis of irinotecan in the intestine and thus reduce the exposure of intestinal SN-38, which may alleviate irinotecan-associated diarrhea. However, existing hCES2 inhibitors (except loperamide) are not used in clinical applications due to lack of validity or acceptable safety. Therefore, developing more effective and safer drugs for treating delayed diarrhea is urgently needed. This study identified a lead compound 1 with a novel scaffold by high-throughput screening in our in-house library. After a comprehensive structure-activity relationship study, the optimal compound 24 was discovered as an efficient and highly selective hCES2 inhibitor (hCES2: IC50 = 6.72 μM; hCES1: IC50 > 100 μM). Further enzyme kinetics study indicated that compound 24 is a reversible inhibitor of hCES2 with competitive inhibition mode (Ki = 6.28 μM). The cell experiments showed that compound 24 could reduce the level of hCES2 in living cells (IC50 = 6.54 μM). The modeling study suggested that compound 24 fitted very well with the binding pocket of hCES2 by forming multiple interactions. Notably, compound 24 can effectively treat irinotecan-induced delayed diarrhea and DSS-induced ulcerative colitis, and its safety has also been verified in subtoxic studies. Based on the overall pharmacological and preliminary safety profiles, compound 24 is worthy of further evaluation as a novel agent for irinotecan-induced delayed diarrhea.
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Affiliation(s)
- Zhijun Cao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Laboratory of New Drug Discovery and Evaluation of the Guangdong Provincial Education Department, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Yuxia Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Siliang Chen
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Wenxin Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Zhongcheng Yang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Ya Chen
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Shixuan Jiao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Laboratory of New Drug Discovery and Evaluation of the Guangdong Provincial Education Department, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Wanqiu Huang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Laboratory of New Drug Discovery and Evaluation of the Guangdong Provincial Education Department, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Construction and Application of New Drug Screening Model Systems, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Lianru Chen
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Lidan Sun
- Department of Pharmaceutics, Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, PR China.
| | - Zheng Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Laboratory of New Drug Discovery and Evaluation of the Guangdong Provincial Education Department, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Construction and Application of New Drug Screening Model Systems, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Guangzhou 510006, PR China.
| | - Luyong Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Key Laboratory of New Drug Discovery and Evaluation of the Guangdong Provincial Education Department, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Construction and Application of New Drug Screening Model Systems, Guangdong Pharmaceutical University, Guangzhou 510006, PR China; Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, PR China.
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167
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Donahue DA, Burns-Naas LA. Toxicology Certification: The Need, the Value, and an Evolving Landscape. Int J Toxicol 2023; 42:445-453. [PMID: 37115659 DOI: 10.1177/10915818231171834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Certification in toxicology remains a subject of interest to those in the field, as evidenced by the number of presentations at major meetings and publications in the past decade. In 2009, Brock and colleagues summarized the certifications available in the field of toxicology and provided an international perspective of the pros and cons of gaining certification. Though that article has been viewed thousands of times, the certification processes have evolved over the past decade. Therefore, the purpose of the article is to build upon the prior work and present current information for toxicologists seeking certification with the American Board of Toxicology (DABT), Academy of Toxicological Sciences (ATS), as a European Registered Toxicologist (ERT), as a Diplomate, Japanese Society of Toxicology (DJSOT), and as a Diplomate of the Chinese Society of Toxicology (DCST). In addition, other certifications are presented, but available details are limited.
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168
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Magura S, Lee-Easton MJ, Abu-Obaid R, Reed P, Allgaier B, Amaratunga P, Lorenz-Lemberg B, Levitas M, Achtyes ED. Comparing presumptive with direct-to-definitive drug testing in oral fluid vs. urine for a U.S. national sample of individuals misusing drugs. Drug Alcohol Depend 2023; 250:110894. [PMID: 37481872 PMCID: PMC10530259 DOI: 10.1016/j.drugalcdep.2023.110894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/03/2023] [Accepted: 07/06/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND The aims are to compare the results of presumptive drug testing with confirmation of positives vs. direct-to-definitive drug testing, combined with investigation of urine vs. oral fluid as test matrices. METHODS Paired oral fluid and urine specimens were collected voluntarily and anonymously from 1098 individuals applying for methadone treatment in 11 clinics across 7 U.S. states. All specimens were analyzed by immunoassay (IA) and liquid chromatography-tandem mass spectrometry (LC-MS-MS). RESULTS Confirmed IA prevalences for urine were significantly higher than for oral fluid for 7 out of 10 drug classes - benzodiazepines, cannabis, cocaine, methadone, opiates, oxycodone and tramadol. Drug prevalences by direct-to-definitive LC-MS-MS were either the same or higher than prevalences by confirmed IA. Drug prevalences by LC-MS-MS were higher in urine for two drug classes (cocaine, methadone) and higher in oral fluid for two drug classes (buprenorphine, tramadol), but were equivalent in urine and oral fluid when averaged over all 10 drug classes. Certain drugs of special concern such as heroin and buprenorphine were more frequently detected in oral fluid than urine. CONCLUSIONS Urine analysis showed some technical advantage over oral fluid in sensitivity to several drug classes within a confirmed IA testing protocol, but this may be outweighed if there is reason to believe that tampering with urine specimens is a significant problem. Overall drug detection by direct-to-definitive testing was similar for oral fluid and urine, but one matrix may be preferable if there is a particular drug of clinical or epidemiological interest.
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Affiliation(s)
| | | | | | - Pete Reed
- Forensic Fluids Laboratories, Inc, USA
| | | | | | | | | | - Eric D Achtyes
- Western Michigan University Homer Stryker M.D. School of Medicine, USA
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169
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Button L, Williams AS, Lamparter C, Woodall KL. Opioid-related deaths in Ontario correctional facilities and penitentiaries (2009-2019). Forensic Sci Med Pathol 2023; 19:357-363. [PMID: 36690802 PMCID: PMC9870661 DOI: 10.1007/s12024-022-00573-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2022] [Indexed: 01/25/2023]
Abstract
The opioid crisis is a significant public health issue in North America that began in the 1990s with opioid-related deaths increasing each year. Although studies have been published regarding the incidence of opioid-related deaths in the general population, there is limited information regarding deaths in the prison population. To investigate the impact of the opioid epidemic in this vulnerable population, a retrospective study of all drug-related deaths that occurred in correctional facilities and penitentiaries in Ontario, Canada, between January 2009 and December 2019 was conducted. A total of 90 deaths were attributed to acute drug toxicity and the decedents ranged in age from 18 to 63 years and comprised 81 men and 9 women. The results of this study indicate the number of drug-related fatalities have increased by 375% (from 4 to 19) over the last 11 years. The detection of opioids in drug-related deaths has increased with fentanyl being the most frequently detected drug. Data also indicates the recent emergence of fentanyl-related analogues in this population. The results from this study provide valuable information about drug-related deaths in the Ontario prison system and provide insight into how the opioid crisis and the increased use of fentanyl and its analogues have affected this vulnerable population.
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Affiliation(s)
- Lourdes Button
- University of Toronto Mississauga, 3359 Mississauga Rd, Mississauga, ON, L5L 1C6, Canada
| | | | | | - Karen L Woodall
- University of Toronto Mississauga, 3359 Mississauga Rd, Mississauga, ON, L5L 1C6, Canada.
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170
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Bermudo Fuenmayor S, Serrano Castro PJ, Quiroga Subirana P, López Palmero S, Requena Mullor M, Parrón Carreño T. Environmental exposure to pesticides and Amyotrophic Lateral Sclerosis in the South of Spain. Neurologia 2023; 38:447-452. [PMID: 37659835 DOI: 10.1016/j.nrleng.2021.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 01/01/2021] [Indexed: 09/04/2023] Open
Abstract
OBJECTIVE To determine if there is a relationship between environmental exposure to pesticides and the prevalence of Amyotrophic Lateral Sclerosis (ALS) in Andalusia. METHOD We carried out a case-control study using the logistic regression method to verify the relationship between the prevalence of ALS in the area exposed to pesticides versus the unexposed area, through the Odds Ratio statistical test. RESULTS The study population consisted of 519 individuals diagnosed with ALS between January 2016 and December 2018 according to the CMBD (Minimum Basic Data Set) as cases. In the control group, we have 8,384,083 individuals obtained from data from the National Institute of Statistics (INE). The Odds Ratio (OR) was used as a measure of association between cases and controls, obtaining an OR between 0.76 and 1.08 for the confidence interval of the CI (95%). CONCLUSIONS Despite the existence of various studies that suggest a possible association between environmental exposure to pesticides and the risk of Amyotrophic Lateral Sclerosis, our analysis of the Andalusian population did not find significant evidence of this association.
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Affiliation(s)
| | | | | | - S López Palmero
- Servicio de Medicina Interna en Complejo Hospitalario Torrecárdenas, Spain
| | | | - T Parrón Carreño
- Unidad de Delegación Territorial para la igualdad, salud y políticas sociales, Almería, Spain
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171
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Abstract
The interaction of diseases with drugs and toxins may result in significantly worse outcomes in a forensic context when i) chronic diseases cause toxicity by increasing drug levels due to reduced renal clearance or slowed hepatic breakdown, and ii) drugs exacerbate underlying lethal mechanisms. In other words, 'negative disease-drug synergy' may result in increased drug toxicity and/or greater organ dysfunction despite the use of standard dosages. This is yet another confounding factor to be considered in the interpretation of postmortem toxicological results, as underlying illness and disease states may significantly alter drug availability and physiological responses.
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Affiliation(s)
- Roger W Byard
- School of Biomedicine, The University of Adelaide, Helen Mayo North, Frome Rd, Level 2, Room N237, Adelaide, SA, 5000, Australia.
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172
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Poulain C, Mathieu O, Gouetta V, Baccino É, Peyron PA. Influence of the toxicological status on the diagnosis of fatal drowning. Int J Legal Med 2023; 137:1471-1479. [PMID: 37433906 PMCID: PMC10421782 DOI: 10.1007/s00414-023-03057-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/27/2023] [Indexed: 07/13/2023]
Abstract
Drowning is the leading cause of death by accident of everyday life in people under 25 years of age. Xenobiotics are frequently involved in drowning cases but their influence on the diagnosis of fatal drowning has not been studied so far. This preliminary study aimed to assess the influence of an alcohol and/or a drug intoxication on the autopsy signs of drowning, and on the results of diatom analyses in drowning deaths. Twenty-eight autopsy cases of drowning including 19 freshwater drownings, 6 seawater drownings, and 3 brackish water drownings were prospectively included. Toxicological and diatom tests were performed in each case. The influence of alcohol and other xenobiotics on drowning signs and diatom analyses was assessed separately then in combination through a global toxicological participation score (GTPS). Diatom analyses showed positive results in lung tissue in every case. No significant association was found between the degree of intoxication and the diatom concentration in the organs, even after considering freshwater drowning cases only. The vast majority of the traditional autopsy signs of drowning were not significantly affected by the individual toxicological status either, with the exception of lung weight which tended to raise in case of intoxication, probably due to the pulmonary edema and congestion increase. Further research on larger autopsy samples is needed to confirm the results of this exploratory study.
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Affiliation(s)
- Clément Poulain
- Department of Forensic Medicine, University Hospital of Montpellier, Montpellier, France.
| | - Olivier Mathieu
- Department of Medical Pharmacology and Toxicology, University Hospital of Montpellier, Montpellier, France
| | - Valérie Gouetta
- SNPS- Laboratoire de Police Scientifique de Toulouse, Toulouse, France
| | - Éric Baccino
- Department of Forensic Medicine, University Hospital of Montpellier, Montpellier, France
- Montpellier Criminal Law and Forensic Sciences research team (EDPFM, UR-UM212), Univ. Montpellier, Montpellier, France
| | - Pierre-Antoine Peyron
- Department of Forensic Medicine, University Hospital of Montpellier, Montpellier, France
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173
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Singh A, Kaur A, Stephens C, Fekete I, Nelson J, Kodwani N. Pulmonary haemorrhage and extensive arterial thrombosis with anabolic steroid abuse. BMJ Case Rep 2023; 16:e254817. [PMID: 37640416 PMCID: PMC10462977 DOI: 10.1136/bcr-2023-254817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023] Open
Abstract
Anabolic-androgenic steroids (AASs) are commonly implicated in thromboembolic events but rarely cause diffuse alveolar haemorrhage. We report the case of a Caucasian man in his late 40s who was consuming supratherapeutic doses of AAS and presented with shortness of breath and haemoptysis. Chest imaging showed bilateral patchy infiltrates in the lungs with diffuse blood throughout the airways on bronchoscopy. Extensive infectious and autoimmune workup were unremarkable. The patient then developed right foot ischaemia and was found to have extensive aortic and bilateral lower extremity arterial thrombosis. Anticoagulation was attempted despite haemoptysis. Thrombectomy procedures were unsuccessful and the patient eventually developed worsening rhabdomyolysis requiring intubation and bilateral amputation. His clinical condition continued to worsen and he passed away 10 days after admission. This case highlights the rare synchronous occurrence of two life-threatening complications secondary to anabolic steroid abuse which can pose a significant diagnostic and therapeutic challenge for clinicians.
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Affiliation(s)
- Angad Singh
- Internal Medicine, HCA MidAmerica DIvision, Kansas City, Kansas, USA
| | - Anahat Kaur
- Hematology and Medical Oncology, Albert Einstein College of Medicine D Samuel Gottesman Library, Bronx, New York, USA
| | - Corbin Stephens
- Internal Medicine, HCA MidAmerica DIvision, Kansas City, Kansas, USA
| | - Ian Fekete
- Internal Medicine, HCA MidAmerica DIvision, Kansas City, Kansas, USA
| | - John Nelson
- Internal Medicine, HCA MidAmerica DIvision, Kansas City, Kansas, USA
| | - Naresh Kodwani
- Internal Medicine, HCA MidAmerica DIvision, Kansas City, Kansas, USA
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174
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Qiao Z, Luo K, Zhou S, Fu M, Shao X, Gong K, Peng C, Zhang W. Response mechanism of lettuce (Lactuca sativa L.) under combined stress of Cd and DBDPE: An integrated physiological and metabolomics analysis. Sci Total Environ 2023; 887:164204. [PMID: 37196961 DOI: 10.1016/j.scitotenv.2023.164204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/19/2023]
Abstract
DBDPE and Cd are representative contaminants commonly found in electronic waste (e-waste), which tend to be gradually discharged and accumulated in the environment during e-waste dismantling, resulting in frequent outbreaks and detection of these pollutants. The toxicity of both chemicals to vegetables after combined exposure has not been determined. The accumulation and mechanisms of phytotoxicity of the two compounds, alone and in combination, were studied using lettuce. The results showed that the enrichment ability of Cd and DBDPE in root was significantly higher than that in aerial part. Exposure to 1 mg/L Cd + DBDPE reduced the toxicity of Cd to lettuce, while exposure to 5 mg/L Cd + DBDPE increased the toxicity of Cd to lettuce. The absorption of Cd in the underground part of lettuce of 5 mg/L Cd + DBDPE was significantly increased by 108.75 % compared to 5 mg/L Cd. The significant enhancement of antioxidant system activity in lettuce under 5 mg/L Cd + DBDPE exposure, and the root activity and total chlorophyll content were decreased by 19.62 % and 33.13 %, respectively, compared to the control. At the same time, the organelles and cell membranes of lettuce root and leaf were significantly damaged, which was significantly worse than that of single Cd and DBDPE treatment. Combined exposure significantly affected the pathways related to amino acid metabolism, carbon metabolism and ABC transport in lettuce. This study filled the safety gap of DBDPE and Cd combined exposure on vegetables and would provide a theoretical basis for the environmental behavior and toxicological study of DBDPE and Cd.
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Affiliation(s)
- Zhihua Qiao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Kailun Luo
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shanqi Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Mengru Fu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xuechun Shao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Kailin Gong
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cheng Peng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Wei Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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175
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Eppe J, Bayrou C, Casalta H, Cassart D, Gille L, Stipulanti M, Versyp J, Sartelet A. Oak Acorn Poisoning in Cattle during Autumn 2022: A Case Series and Review of the Current Knowledge. Animals (Basel) 2023; 13:2678. [PMID: 37627469 PMCID: PMC10451953 DOI: 10.3390/ani13162678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/10/2023] [Accepted: 08/19/2023] [Indexed: 08/27/2023] Open
Abstract
Oak poisoning is a known intoxication in grazing animals, but is slightly described in the literature. This case report describes 7 cattle from 3 different farms admitted to the clinic for ruminants of the University of Liège for suspected acorn poisoning in the autumn of 2022. The clinical signs were, anorexia, apathy with polyuria with low density. Further investigations led to the diagnosis of renal failure (blood urea 162 ± 88 mg/dL; blood creatinine 12 ± 4 mg/L). Supportive treatment, based on infusions (NaCl 0.9%) and electrolyte rebalancing, was administered and renal values were assessed every 24-48 h. Of these animals, 5/7 were euthanized. At necropsy, digestive erosions and ulcerations, oedema and renal hemorrhages, between the pyloric/caliceal cavity and the medulla were observed. Histopathological examination revealed necrosis of the renal tubules. The renal values of the two remaining animals were reduced, their general condition improved, and they were discharged. Acorn poisoning is a serious disease with no specific antidote or characteristic symptoms. Animals are identified as sick too late, when renal failure is already established. Farmers should be made more aware in order to prevent exposure, especially in years when acorns are abundant. Furthermore, there is no antidote for this intoxication.
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Affiliation(s)
- Justine Eppe
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
| | - Calixte Bayrou
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
| | - Hélène Casalta
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
| | - Dominique Cassart
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Department of Animal Pathology, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 6, 4000 Liège, Belgium;
| | - Linde Gille
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
| | - Margot Stipulanti
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
| | - Jérôme Versyp
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
| | - Arnaud Sartelet
- Fundamental and Applied Research for Animals and Health Research Unit (FARAH), Clinical Department of Production Animals, Faculty of Veterinary Medicine, University of Liège, Quartier Vallée 2, Avenue de Cureghem 7A-7D, 4000 Liège, Belgium; (C.B.); (H.C.); (L.G.); (M.S.); (J.V.); (A.S.)
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176
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Zhang C, Kong Y, Xiang Q, Ma Y, Guo Q. Bacterial memory in antibiotic resistance evolution and nanotechnology in evolutionary biology. iScience 2023; 26:107433. [PMID: 37575196 PMCID: PMC10415926 DOI: 10.1016/j.isci.2023.107433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023] Open
Abstract
Bacterial memory refers to the phenomenon in which past experiences influence current behaviors in response to changing environments. It serves as a crucial process that enables adaptation and evolution. We first summarize the state-of-art approaches regarding history-dependent behaviors that impact growth dynamics and underlying mechanisms. Then, the phenotypic and genotypic origins of memory and how encoded memory modulates drug tolerance/resistance are reviewed. We also provide a summary of possible memory effects induced by antimicrobial nanoparticles. The regulatory networks and genetic underpinnings responsible for memory building partially overlap with nanoparticle and drug exposures, which may raise concerns about the impact of nanotechnology on adaptation. Finally, we provide a perspective on the use of nanotechnology to harness bacterial memory based on its unique mode of actions on information processing and transmission in bacteria. Exploring bacterial memory mechanisms provides valuable insights into acclimation, evolution, and the potential applications of nanotechnology in harnessing memory.
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Affiliation(s)
- Chengdong Zhang
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yan Kong
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Qingxin Xiang
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yayun Ma
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Quanyi Guo
- School of Environment, Beijing Normal University, Beijing 100875, China
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177
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Mikkelsen K, Sørli JB, Frederiksen M, Hadrup N. Risk assessment of the asthma-induction potential of substances in spray products for car cabin detailing - based on EU's Chemical Agents Directive, using harmonised classifications and quantitative structure-activity relationship (QSAR). Toxicology 2023; 495:153612. [PMID: 37558157 DOI: 10.1016/j.tox.2023.153612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/27/2023] [Accepted: 08/06/2023] [Indexed: 08/11/2023]
Abstract
Exposure to spray-formulated products for car cabin detailing is a potential risk for asthma induction. With a focus on the asthma-related endpoints sensitisation and irritation of the lungs, we performed an occupational risk assessment based on requirements in the EU Chemical Agents Directive. We identified 71 such spray products available in Denmark. We identified ingredient substances in safety data sheets and screened for harmonised classifications of respiratory sensitisation and airway irritation. For respiratory sensitisation, we also applied quantitative structure-activity relationship (QSAR). We modelled the exposure during 15 min of work inside a car cabin, and determined the risk ratio of the products by further applying occupational exposure limits - mainly derived no-effect levels (DNELs) from the European Chemicals Agency (ECHA) set on respiratory irritation. Four substances had a harmonised classification for respiratory irritation (bronopol, 2-phenoxyethanol, 2-methoxypropanol, and butan-1-ol). Seven substances were positive in the QSAR model for respiratory sensitisation (monoethanolamine, bronopol, glycerol, methyl salicylate, benzoic acid, ammonium benzoate, and sodium benzoate). Two vinyl treatment products had a risk ratio > 1 based on the level of sodium benzoate and its DNEL set on respiratory irritation. Two products had risk ratios of 0.69 and 0.73, respectively, based on 2-methyl-2 H-isothiazol-3-one and its acute DNEL set on respiratory irritation. In conclusion, 10 substances that may pose a risk for asthma induction were identified in the products. Two of the 71 products had a risk ratio > 1, meaning they may pose an asthma-induction risk in the modelled exposure scenario and using respiratory irritation DNELs from ECHA.
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Affiliation(s)
- Kasper Mikkelsen
- National Research Centre for the Working Environment, DK-2100 Copenhagen, Denmark
| | - Jorid B Sørli
- National Research Centre for the Working Environment, DK-2100 Copenhagen, Denmark
| | - Marie Frederiksen
- National Research Centre for the Working Environment, DK-2100 Copenhagen, Denmark
| | - Niels Hadrup
- National Research Centre for the Working Environment, DK-2100 Copenhagen, Denmark; Research Group for Risk-benefit, National Food Institute, Technical University of Denmark, Denmark.
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178
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Thompson I, Gadsby Z, Martin J, Thompson M, Tse R. Gabapentinoid detection in coronial casework in Gold Coast, Australia: a 5-year retrospective study. Forensic Sci Med Pathol 2023:10.1007/s12024-023-00694-3. [PMID: 37578626 DOI: 10.1007/s12024-023-00694-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2023] [Indexed: 08/15/2023]
Abstract
Gabapentinoids is a class of drug with analgesic, anxiolytic, and anticonvulsant properties and has a reported increase in prescription, use, and adverse outcomes. Regional studies are scant, and postmortem toxicological data may characterise patterns of regional use and inform local interventions. Characterising drug and non-drug-related deaths with gabapentinoid detection may also aid in toxicology interpretation. A 5-year retrospective study on all deaths admitted to the Gold Coast University Hospital under where toxicological analysis was performed. Of the gabapentinoids, only pregabalin was detected over the study period, and annual rates of detection did not differ significantly over the period (7.4-12.4%). In cases where pregabalin was detected, it was 15 times more likely to be a drug-related death. Drug-related deaths where pregabalin was detected have higher levels of pregabalin, are younger, and had a greater proportion of concurrent opioid detection. Postmortem detection of pregabalin was associated with drug-related deaths. Higher levels, younger decedents, and concurrent use of opioids were found in drug-related deaths. Public health interventions and regulated prescribing to target concurrent pregabalin and opioid use may address the burden of pregabalin drug-related deaths.
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Affiliation(s)
| | - Zeena Gadsby
- Griffith University School of Medicine, Southport, QLD, Australia
| | - Jeremy Martin
- Griffith University School of Medicine, Southport, QLD, Australia
| | - Melissa Thompson
- Forensic and Scientific Services, Health Support Queensland, Gold Coast University Hospital, 1 Hospital Boulevard, Southport, QLD, Australia
| | - Rexson Tse
- Griffith University School of Medicine, Southport, QLD, Australia.
- Forensic and Scientific Services, Health Support Queensland, Gold Coast University Hospital, 1 Hospital Boulevard, Southport, QLD, Australia.
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179
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Rai M, Singh AV, Paudel N, Kanase A, Falletta E, Kerkar P, Heyda J, Barghash RF, Pratap Singh S, Soos M. Herbal concoction Unveiled: A computational analysis of phytochemicals' pharmacokinetic and toxicological profiles using novel approach methodologies (NAMs). Curr Res Toxicol 2023; 5:100118. [PMID: 37609475 PMCID: PMC10440360 DOI: 10.1016/j.crtox.2023.100118] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/24/2023] Open
Abstract
Herbal medications have an extensive history of use in treating various diseases, attributed to their perceived efficacy and safety. Traditional medicine practitioners and contemporary healthcare providers have shown particular interest in herbal syrups, especially for respiratory illnesses associated with the SARS-CoV-2 virus. However, the current understanding of the pharmacokinetic and toxicological properties of phytochemicals in these herbal mixtures is limited. This study presents a comprehensive computational analysis utilizing novel approach methodologies (NAMs) to investigate the pharmacokinetic and toxicological profiles of phytochemicals in herbal syrup, leveraging in-silico techniques and prediction tools such as PubChem, SwissADME, and Molsoft's database. Although molecular dynamics, docking, and broader system-wide analyses were not considered, future studies hold potential for further investigation in these areas. By combining drug-likeness with molecular simulation, researchers identify diverse phytochemicals suitable for complex medication development examining their pharmacokinetic-toxicological profiles in phytopharmaceutical syrup. The study focuses on herbal solutions for respiratory infections, with the goal of adding to the pool of all-natural treatments for such ailments. This research has the potential to revolutionize environmental and alternative medicine by leveraging in-silico models and innovative analytical techniques to identify novel phytochemicals with enhanced therapeutic benefits and explore network-based and systems biology approaches for a deeper understanding of their interactions with biological systems. Overall, our study offers valuable insights into the computational analysis of the pharmacokinetic and toxicological profiles of herbal concoction. This paves the way for advancements in environmental and alternative medicine. However, we acknowledge the need for future studies to address the aforementioned topics that were not adequately covered in this research.
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Affiliation(s)
- Mansi Rai
- Department of Microbiology, Central University of Rajasthan NH-8, Bandar Sindri, Dist-Ajmer-305817, Rajasthan, India
| | - Ajay Vikram Singh
- Department of Chemical and Product Safety, German Federal Institute of Risk Assessment (BfR), Maxdohrnstrasse 8-10, 10589 Berlin, Germany
| | - Namuna Paudel
- Department of Chemistry, Amrit Campus, Institute of Science and Technology, Tribhuvan University, Lainchaur, Kathmandu 44600, Nepal
| | - Anurag Kanase
- Opentrons Labworks Inc., Brooklyn, NY 11201, the United States of America
| | - Ermelinda Falletta
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Pranali Kerkar
- Rutgers School of Public Health, 683 Hoes Lane West Piscataway, NJ 08854, the United States of America
| | - Jan Heyda
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technicka 5, Prague 6 Dejvice, 166 28, Czech Republic
| | - Reham F. Barghash
- Institute of Chemical Industries Researches, National Research Centre, Dokki, Cairo 12622, Egypt
| | | | - Miroslav Soos
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 3, Prague 6 Dejvice, 166 28, Czech Republic
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180
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Huang X, Fei Q, Yu S, Liu S, Zhang L, Chen X, Cao L, Wang Z, Shan M. A comprehensive review: Botany, phytochemistry, traditional uses, pharmacology, and toxicology of Spatholobus suberectus vine stems. J Ethnopharmacol 2023; 312:116500. [PMID: 37062528 DOI: 10.1016/j.jep.2023.116500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 05/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Spatholobus suberectus vine stem (SSVS) is the dried lianoid stem of the leguminous plant, Spatholobus suberectus Dunn, which is mainly distributed in China and some Southeast Asian countries. Due to its notable effects of promoting blood circulation and tonifying blood, regulating menstruation and relieving pain, this phytomedicine has been used in traditional Chinese medicine for hundreds of years. AIM OF THE STUDY This review is designed to provide a comprehensive profile of SSVS concerning its botany, traditional uses, phytochemistry, quality control, pharmacology, pharmacokinetics, and toxicology and attempts to provide a scientific basis and future directions for further research and development. MATERIALS AND METHODS Related document information was collected with the help of databases such as the Web of Science, Science Direct, PubMed, China National Knowledge Infrastructure (CNKI) and Flora of China. RESULTS SSVS is reported to be traditionally used to treat rheumatic arthralgia, numbness and paralysis, blood deficiency, irregular menstruation and other gynecological diseases. Botanical studies have revealed that there are some confusable varieties in some specific locations with a long history. Additionally, 145 chemical constituents have been isolated and identified from SSVS, including flavonoids, organic acids, terpenoids, lignans, and phenolic glycosides. Pharmacological studies have shown that SSVS has a variety of effects, such as nervous system regulation, and antioxidative, antitumor, antiviral, antidiabetic, and anti-inflammatory effects. However, in regard to the absorption-distribution-metabolism-elimination-toxicity (ADMET) of SSVS, few studies have been carried out, and few articles have been published. CONCLUSION With a long history of traditional uses, a variety of bioactive phytochemicals and a wide range of definite pharmacological activities, SSVS is believed to have great potential in clinical applications and further research, development and exploitation. The precise action mechanisms, rational quality control and quality markers, and explicit ADMET routes should be highlighted in the future, which might provide effective help to safely, effectively and sustainably use this herbal medicine.
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Affiliation(s)
- Xiaojun Huang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Qingqing Fei
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Sheng Yu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Shengjin Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Li Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Xialin Chen
- National Key Laboratory of Pharmaceutical New Technology for Chinese Medicine, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, 222001, PR China
| | - Liang Cao
- National Key Laboratory of Pharmaceutical New Technology for Chinese Medicine, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, 222001, PR China
| | - Zhenzhong Wang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; National Key Laboratory of Pharmaceutical New Technology for Chinese Medicine, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, 222001, PR China
| | - Mingqiu Shan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China.
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181
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Matsuo C, Yamamoto K, Fukushima H, Yajima D, Inoue H. Recurrent ventricular arrhythmia due to aconite intoxication successfully treated with landiolol: A case report. World J Clin Cases 2023; 11:5297-5302. [DOI: 10.12998/wjcc.v11.i22.5297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/01/2023] [Accepted: 07/17/2023] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND Ventricular arrhythmias, such as ventricular tachycardia and fibrillation, are the main causes of death in patients with aconite poisoning.
CASE SUMMARY A 51-year-old man presented to our emergency department because he was vomiting after ingesting aconite root to attempt suicide. On arrival, the patient was hemodynamically unstable, and his electrocardiogram revealed polymorphic ventricular extrasystoles and non-sustained ventricular tachycardia. Amiodarone was immediately administered for ventricular arrhythmia. However, the patient remained unresponsive. We administered continuous intravenous landiolol as the ventricular arrhythmia worsened, gradually suppressing it. The patient returned to sinus rhythm 16 h after arriving at the hospital. Some aconitum alkaloids act on voltage-gated Na+- channels and induce ventricular or supraventricular tachyarrhythmias. Landiolol suppresses sympathetic nerve activity through its blocking effect, preventing arrhythmia.
CONCLUSION Landiolol can be a therapeutic option for amiodarone-refractory ventricular arrhythmias caused by aconite intoxication.
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Affiliation(s)
- Chiaki Matsuo
- Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara City 634-8522, Nara, Japan
| | - Koji Yamamoto
- Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara City 634-8522, Nara, Japan
| | - Hidetada Fukushima
- Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara City 634-8522, Nara, Japan
| | - Daisuke Yajima
- Department of Forensic Medicine, School of Medicine, International University of Health and Welfare, Narita City 286-8686, Chiba, Japan
| | - Hiroyuki Inoue
- Department of Forensic Medicine, School of Medicine, International University of Health and Welfare, Narita City 286-8686, Chiba, Japan
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182
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Matsuo C, Yamamoto K, Fukushima H, Yajima D, Inoue H. Recurrent ventricular arrhythmia due to aconite intoxication successfully treated with landiolol: A case report. World J Clin Cases 2023; 11:5303-5308. [PMID: 37621582 PMCID: PMC10445079 DOI: 10.12998/wjcc.v11.i22.5303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/01/2023] [Accepted: 07/17/2023] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND Ventricular arrhythmias, such as ventricular tachycardia and fibrillation, are the main causes of death in patients with aconite poisoning. CASE SUMMARY A 51-year-old man presented to our emergency department because he was vomiting after ingesting aconite root to attempt suicide. On arrival, the patient was hemodynamically unstable, and his electrocardiogram revealed polymorphic ventricular extrasystoles and non-sustained ventricular tachycardia. Amiodarone was immediately administered for ventricular arrhythmia. However, the patient remained unresponsive. We administered continuous intravenous landiolol as the ventricular arrhythmia worsened, gradually suppressing it. The patient returned to sinus rhythm 16 h after arriving at the hospital. Some aconitum alkaloids act on voltage-gated Na+- channels and induce ventricular or supraventricular tachyarrhythmias. Landiolol suppresses sympathetic nerve activity through its blocking effect, preventing arrhythmia. CONCLUSION Landiolol can be a therapeutic option for amiodarone-refractory ventricular arrhythmias caused by aconite intoxication.
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Affiliation(s)
- Chiaki Matsuo
- Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara City 634-8522, Nara, Japan
| | - Koji Yamamoto
- Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara City 634-8522, Nara, Japan
| | - Hidetada Fukushima
- Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara City 634-8522, Nara, Japan
| | - Daisuke Yajima
- Department of Forensic Medicine, School of Medicine, International University of Health and Welfare, Narita City 286-8686, Chiba, Japan
| | - Hiroyuki Inoue
- Department of Forensic Medicine, School of Medicine, International University of Health and Welfare, Narita City 286-8686, Chiba, Japan
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183
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Gould S, Templin MV. Off target toxicities and links with physicochemical properties of medicinal products, including antibiotics, oligonucleotides, lipid nanoparticles (with cationic and/or anionic charges). Data review suggests an emerging pattern. Toxicol Lett 2023; 384:14-29. [PMID: 37454775 DOI: 10.1016/j.toxlet.2023.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Toxicology is an essential part of any drug development plan. Circumnavigating the risk of failure because of a toxicity issue can be a challenge, and failure in late development is extremely costly. To identify potential risks, it requires more than just understanding the biological target. The toxicologist needs to consider a compound's structure, it's physicochemical properties (including the impact of the overall formulation), as well as the biological target (e.g., receptor interactions). Understanding the impact of the physicochemical properties can be used to predict potential toxicities in advance by incorporating key endpoints in early screening strategies and/or used to compare toxicity profiles across lead candidates. This review discussed the risks of off-target and/or non-specific toxicities that may be associated with the physicochemical properties of compounds, especially those carrying dominant positive or negative charges, including amphiphilic small molecules, peptides, oligonucleotides and lipids/liposomes/lipid nanoparticles. The latter of which are being seen more and more in drug development, including the recent Covid pandemic, where mRNA and lipid nanoparticle technology is playing more of a role in vaccine development. The translation between non-clinical and clinical data is also considered, questioning how a physicochemical driven toxicity may be more universal across species, which means that such toxicity may be reassuringly translatable between species and as such, this information may also be considered as a support to the 3 R's, particularly in the early screening stages of a drug development plan.
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184
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Dai Y, Xu X, Huo X, Faas MM. Effects of polycyclic aromatic hydrocarbons (PAHs) on pregnancy, placenta, and placental trophoblasts. Ecotoxicol Environ Saf 2023; 262:115314. [PMID: 37536008 DOI: 10.1016/j.ecoenv.2023.115314] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/05/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a group of persistent organic pollutants that are carcinogenic, mutagenic, endocrine-toxic, and immunotoxic. PAHs can be found in maternal and fetal blood and in the placenta during pregnancy. They may thus affect placental and fetal development. Therefore, the exposure levels and toxic effects of PAHs in the placenta deserve further study and discussion. This review aims to summarize current knowledge on the effects of PAHs and their metabolites on pregnancy and birth outcomes and on placental trophoblast cells. A growing number of epidemiological studies detected PAH-DNA adducts as well as the 16 high-priority PAHs in the human placenta and showed that placental PAH exposure is associated with adverse fetal outcomes. Trophoblasts are important cells in the placenta and are involved in placental development and function. In vitro studies have shown that exposure to either PAH mixtures, benzo(a)pyrene (BaP) or BaP metabolite benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE) affected trophoblast cell viability, differentiation, migration, and invasion through various signaling pathways. Furthermore, similar effects of BPDE on trophoblast cells could also be observed in BaP-treated mouse models and were related to miscarriage. Although the current data show that PAHs may affect placental trophoblast cells and pregnancy outcomes, further studies (population studies, in vitro studies, and animal studies) are necessary to show the specific effects of different PAHs on placental trophoblasts and pregnancy outcomes.
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Affiliation(s)
- Yifeng Dai
- Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen and University of Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands; Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, 22 Xinling Rd, Shantou 515041, Guangdong, China.
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, 22 Xinling Rd, Shantou 515041, Guangdong, China; Department of Cell Biology and Genetics, Shantou University Medical College, 22 Xinling Rd, Shantou 515041, Guangdong, China
| | - Xia Huo
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Marijke M Faas
- Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen and University of Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands; Department of Obstetrics and Gynecology, University Medical Center Groningen and University of Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
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185
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Moreira J, Machado M, Dias-Teixeira M, Ferraz R, Delerue-Matos C, Grosso C. The neuroprotective effect of traditional Chinese medicinal plants-A critical review. Acta Pharm Sin B 2023; 13:3208-3237. [PMID: 37655317 PMCID: PMC10465969 DOI: 10.1016/j.apsb.2023.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/23/2023] [Accepted: 04/03/2023] [Indexed: 09/02/2023] Open
Abstract
Neurodegenerative and neuropsychiatric diseases are increasingly affecting individuals' quality of life, thus increasing their cost to social and health systems. These diseases have overlapping mechanisms, such as oxidative stress, protein aggregation, neuroinflammation, neurotransmission impairment, mitochondrial dysfunction, and excitotoxicity. Currently, there is no cure for neurodegenerative diseases, and the available therapies have adverse effects and low efficacy. For neuropsychiatric disorders, such as depression, the current therapies are not adequate to one-third of the patients, the so-called treatment-resistant patients. So, searching for new treatments is fundamental. Medicinal plants appear as a strong alternative and complement towards new treatment protocols, as they have been used for health purposes for thousands of years. Thus, the main goal of this review is to revisit the neuroprotective potential of some of the most predominant medicinal plants (and one fungus) used in traditional Chinese medicine (TCM), focusing on their proven mechanisms of action and their chemical compositions, to give clues on how they can be useful against neurodegeneration progression.
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Affiliation(s)
- João Moreira
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| | - Mariana Machado
- Ciências Químicas e das Biomoléculas/CISA, Escola Superior de Saúde—Instituto Politécnico do Porto, Porto 4200-072, Portugal
| | - Mónica Dias-Teixeira
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
- NICiTeS—Núcleo de Investigação em Ciências e Tecnologias da Saúde, Escola Superior de Saúde Ribeiro Sanches, Lisboa 1950-396, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas/CISA, Escola Superior de Saúde—Instituto Politécnico do Porto, Porto 4200-072, Portugal
- REQUIMTE/LAQV, Departamento de Química e Bioquímica Faculdade de Ciências, Universidade do Porto, Porto 4169-007, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| | - Clara Grosso
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
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Zhang S, Zhang J, Wu L, Chen L, Niu P, Li J. Glutamine supplementation reverses manganese neurotoxicity by eliciting the mitochondrial unfolded protein response. iScience 2023; 26:107136. [PMID: 37408687 PMCID: PMC10318524 DOI: 10.1016/j.isci.2023.107136] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/24/2023] [Accepted: 06/12/2023] [Indexed: 07/07/2023] Open
Abstract
Excessive exposure to manganese (Mn) can cause neurological abnormalities, but the mechanism of Mn neurotoxicity remains unclear. Previous studies have shown that abnormal mitochondrial metabolism is a crucial mechanism underlying Mn neurotoxicity. Therefore, improving neurometabolic in neuronal mitochondria may be a potential therapy for Mn neurotoxicity. Here, single-cell sequencing revealed that Mn affected mitochondrial neurometabolic pathways and unfolded protein response in zebrafish dopaminergic neurons. Metabolomic analysis indicated that Mn inhibited the glutathione metabolic pathway in human neuroblastoma (SH-SY5Y) cells. Mechanistically, Mn exposure inhibited glutathione (GSH) and mitochondrial unfolded protein response (UPRmt). Furthermore, supplementation with glutamine (Gln) can effectively increase the concentration of GSH and triggered UPRmt which can alleviate mitochondrial dysfunction and counteract the neurotoxicity of Mn. Our findings highlight that UPRmt is involved in Mn-induced neurotoxicity and glutathione metabolic pathway affects UPRmt to reverse Mn neurotoxicity. In addition, Gln supplementation may have potential therapeutic benefits for Mn-related neurological disorders.
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Affiliation(s)
- Shixuan Zhang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
- Department of Nutrition, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Junrou Zhang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Luli Wu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Li Chen
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Piye Niu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jie Li
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
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187
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Forté CA, Millar JA, Colacino JA. Integrating NHANES and toxicity forecaster data to compare pesticide exposure and bioactivity by farmwork history and US citizenship. J Expo Sci Environ Epidemiol 2023:10.1038/s41370-023-00583-5. [PMID: 37474644 PMCID: PMC10799167 DOI: 10.1038/s41370-023-00583-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 06/28/2023] [Accepted: 07/06/2023] [Indexed: 07/22/2023]
Abstract
BACKGROUND Farmworkers in the United States, especially migrant workers, face unique barriers to healthcare and have documented disparities in health outcomes. Exposure to pesticides, especially those persistent in the environment, may contribute to these health disparities. OBJECTIVE Quantify differences in pesticide exposure bioactivity by farmworker category and US citizenship status. METHODS We queried the National Health and Nutrition Examination Study (NHANES) from 1999-2014 for pesticide exposure biomarker concentrations among farmworkers and non-farmworkers by citizenship status. We combined this with toxicity assay data from the US Environmental Protection Agency's (EPA's) Toxicity Forecaster (ToxCast). We estimated adverse biological effects that occur across a range of human population-relevant pesticide doses. RESULTS In total, there were 844 people with any farmwork history and 23,592 non-farmworkers. Of 12 commonly detectable pesticide biomarkers in NHANES, 2,4-dichlorophenoxyacetic acid (OR = 3.76, p = 1.33 × 10-6) was significantly higher in farmworkers than non-farmworkers. Farmworkers were 1.15 times more likely to have a bioactive pesticide biomarker measurement in comparison to non-farmworkers (adjusted OR = 1.15, 95% CI: 0.87, 1.51). Non-U.S. citizens were 1.39 times more likely to have bioactive pesticide biomarker concentrations compared to people with U.S. citizenship (adjusted OR 1.39, 95% CI: 1.17, 1.64). Additionally, non-citizens were significantly more exposed to bioactive levels of β-hexachlorocyclohexane (BHC) (OR = 8.10, p = 1.33 × 10-6), p,p-DDE (OR = 2.60, p = 0.02), and p,p'-DDT (OR = 7.75, p = 0.01). IMPACT STATEMENT Farmworkers are a vulnerable population due to social determinants of health and occupational exposures. Here, we integrate US population chemical biomonitoring data and toxicity outcome data to assess pesticide exposure by farmwork history and citizenship. We find that farmworkers and those without US citizenship are significantly more likely to be exposed to concentrations of pesticides which are bioactive in toxicological assays. Thus, farmworkers employed in the US but who are not citizens could be at increased risk of harm to their health due to pesticides. These findings are important to shape evidence-based policies in regulatory science to promote worker safety.
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Affiliation(s)
- Chanese A Forté
- The University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, USA
- The University of Michigan, College of Engineering, Michigan Institute of Computational Discovery and Engineering, Ann Arbor, MI, USA
| | - Jess A Millar
- The University of Michigan School of Public Health, Department of Epidemiology, Ann Arbor, MI, USA
- The University of Michigan Medical School, Department of Computational Medicine and Bioinformatics, Ann Arbor, MI, USA
| | - Justin A Colacino
- The University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, USA.
- The University of Michigan School of Public Health, Department of Nutritional Sciences, Ann Arbor, MI, USA.
- The University of Michigan College of Literature, Sciences, and the Arts, Program in the Environment, Ann Arbor, MI, USA.
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188
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Chitty KM, Buckley NA, Lim J, Ali Z, Schumann JL, Cairns R, Daniels B, Pearson SA, Preen DB, Schaffer AL. Psychotropic and other medicine use at time of death by suicide: a population-level analysis of linked dispensing and forensic toxicology data. Med J Aust 2023; 219:63-69. [PMID: 37230472 PMCID: PMC10952140 DOI: 10.5694/mja2.51985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 05/27/2023]
Abstract
OBJECTIVES To determine the numbers and types of medicines dispensed around the time of death to people who die by suicide; to compare the medicines recently dispensed and those recorded in post mortem toxicology reports. DESIGN, SETTING, PARTICIPANTS Analysis of linked National Coronial Information System (NCIS) and Pharmaceutical Benefits Scheme (PBS) data from the Australian Suicide Prevention using Health Linked Data (ASHLi) study, a population-based case series study of closed coronial cases for deaths of people in Australia aged ten years or more during 1 July 2013 - 10 October 2019 deemed by coroners to be the result of intentional self-harm. MAIN OUTCOME MEASURES Proportions of people to whom medicines were dispensed around the time of death, by medicine group, class, and specific medicine; comparison of medicines recently dispensed and those detected by post mortem toxicology. RESULTS Toxicology reports were available for 13 541 of 14 206 people who died by suicide (95.3%; 10 246 men, 75.7%); poisoning with medicines contributed to 1163 deaths (8.6%). At least one PBS-subsidised medicine had been dispensed around the time of death to 7998 people (59.1%). For three medicine classes, the proportions of people in whom the medicines were detected post mortem and their death was deemed medicine-related were larger for those without records of recent dispensing than for people for whom they had been dispensed around the time of death: antidepressants (17.7% v 12.0%), anxiolytics (16.3% v 14.8%), and sedatives/hypnotics (24.3% v 16.5%). At least one recently dispensed medicine not detected post mortem was identified for 6208 people (45.8%). CONCLUSIONS A considerable proportion of people who died by suicide were not taking psychotropic medicines recently dispensed to them, suggesting non-adherence to pharmacotherapy, and a smaller than expected proportion were using antidepressants. Conversely, medicines that had not recently been dispensed were detected post mortem in many people for whom poisoning with medicines was a contributing factor, suggesting medicine stockpiling.
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Affiliation(s)
- Kate M Chitty
- The University of SydneySydneyNSW
- The University of Western AustraliaPerthWA
| | - Nicholas A Buckley
- The University of SydneySydneyNSW
- Poisons Information CentreChildren's Hospital at WestmeadSydneyNSW
| | | | - Zein Ali
- The University of SydneySydneyNSW
| | - Jennifer L Schumann
- Victorian Institute of Forensic MedicineMonash UniversityMelbourneVIC
- Monash Addiction Research CentreMonash UniversityMelbourneVIC
- Monash UniversityMelbourneVIC
| | - Rose Cairns
- The University of SydneySydneyNSW
- Poisons Information CentreChildren's Hospital at WestmeadSydneyNSW
| | | | | | | | - Andrea L Schaffer
- The Bennett Institute of Applied Data ScienceUniversity of OxfordOxfordUnited Kingdom
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189
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190
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Dos Santos AF, Martins MO, Lameira J, de Oliveira Araújo J, Frizzo MS, Davidson CB, de Souza DV, Machado AK, Mortari SR, Druzian DM, Tonel MZ, da Silva IZ, Fagan SB. Evaluation interaction of graphene oxide with heparin for antiviral blockade: a study of ab initio simulations, molecular docking, and experimental analysis. J Mol Model 2023; 29:235. [PMID: 37418181 DOI: 10.1007/s00894-023-05645-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023]
Abstract
CONTEXT Heparin, one of the drugs reused in studies with antiviral activity, was chosen to investigate a possible blockade of the SARS-CoV-2 spike protein for viral entry through computational simulations and experimental analysis. Heparin was associated to graphene oxide to increase in the binding affinity in biological system. First, the electronic and chemical interaction between the molecules was analyzed through ab initio simulations. Later, we evaluate the biological compatibility of the nanosystems, in the target of the spike protein, through molecular docking. The results show that graphene oxide interacts with the heparin with an increase in the affinity energy with the spike protein, indicating a possible increment in the antiviral activity. Experimental analysis of synthesis and morphology of the nanostructures were carried out, indicating heparin absorption by graphene oxide, confirming the results of the first principle simulations. Experimental tests were conducted on the structure and surface of the nanomaterial, confirming the heparin aggregation on the synthesis with a size between the GO layers of 7.44 Å, indicating a C-O type bond, and exhibiting a hydrophilic surface characteristic (36.2°). METHODS Computational simulations of the ab initio with SIESTA code, LDA approximations, and an energy shift of 0.05 eV. Molecular docking simulations were performed in the AutoDock Vina software integrated with the AMDock Tools Software using the AMBER force field. GO, GO@2.5Heparin, and GO@5Heparin were synthesized by Hummers and impregnation methods, respectively, and characterized by X-ray diffraction and surface contact angle.
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Affiliation(s)
- André Flores Dos Santos
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil.
| | - Mirkos Ortiz Martins
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil
| | - Jerônimo Lameira
- Institute of Biological Sciences, Federal University of Pará-UFPA, Belém, PA, Brazil
| | | | - Marcela Sagrilo Frizzo
- Postgraduate Program in Chemical Engineering-PosENQ, Federal University of Santa Catarina-UFSC, Florianopolis, SC, Brazil
| | - Carolina Bordin Davidson
- Postgraduate Program in Nanosciences: Laboratory of Cell Culture and Bioactive Effects, Franciscan University-UFN, Santa Maria, RS, Brazil
| | - Diulie Valente de Souza
- Postgraduate Program in Nanosciences: Laboratory of Cell Culture and Bioactive Effects, Franciscan University-UFN, Santa Maria, RS, Brazil
| | - Alencar Kolinski Machado
- Postgraduate Program in Nanosciences: Laboratory of Cell Culture and Bioactive Effects, Franciscan University-UFN, Santa Maria, RS, Brazil
| | - Sérgio Roberto Mortari
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil
| | - Daniel Moro Druzian
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil
| | - Mariana Zancan Tonel
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil
| | - Ivana Zanella da Silva
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil
| | - Solange Binotto Fagan
- Postgraduate Program in Nanoscience: Laboratory of Simulation and Modeling of Nanomaterials-LASIMON, Franciscan University-UFN, Andradas Street, 1614, Santa Maria, RS, 97010-030, Brazil
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Dempsey SK, Glicksberg L, Rausch AJ, Christensen H, Casey BK. Alcohol use trends in Dallas County during the COVID-19 pandemic. Forensic Sci Int Rep 2023; 7:100318. [PMID: 38013848 PMCID: PMC10052871 DOI: 10.1016/j.fsir.2023.100318] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
Alcohol (ethanol) is the most widely detected drug in forensic toxicology casework and an increase in consumption of alcohol was reported during the COVID-19 pandemic. The increase in consumption could be attributed to rising stress levels and social isolation. To determine whether the pandemic had an impact on ethanol positivity and concentrations in cases analyzed by the Dallas County Southwestern Institute of Forensic Sciences, blood ethanol results were evaluated from January 1, 2019, through December 31, 2021. This time frame captured ethanol prevalence and concentrations before, during, and immediately following the pandemic for comparison. The average ethanol concentration in postmortem casework over the three years for each quarter ranged from 0.116 g/100 mL to 0.142 g/100 mL while the average concentration in driving while intoxicated (DWI) was higher, ranging from 0.173 g/100 mL to 0.188 g/100 mL. The ethanol positivity rate for postmortem casework remained relatively the same at approximately 20% during the time frame, while there was a decrease in ethanol positivity rate for DWI casework during the pandemic in April - June (Q2) 2020. However, the positivity rate returned to pre-pandemic levels by the end of 2020. Despite the self-reported surveys of increased alcohol consumption during the pandemic, a corresponding increase in average ethanol concentrations was not observed in Dallas County and the surrounding area.
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Affiliation(s)
- Sara K Dempsey
- Dallas County Southwestern Institute of Forensic Sciences, 2355 N. Stemmons Fwy, Dallas, TX 75207, USA
| | - Lindsay Glicksberg
- Dallas County Southwestern Institute of Forensic Sciences, 2355 N. Stemmons Fwy, Dallas, TX 75207, USA
| | - Amanda J Rausch
- Dallas County Southwestern Institute of Forensic Sciences, 2355 N. Stemmons Fwy, Dallas, TX 75207, USA
| | - Heidi Christensen
- Dallas County Southwestern Institute of Forensic Sciences, 2355 N. Stemmons Fwy, Dallas, TX 75207, USA
| | - Brittany K Casey
- Dallas County Southwestern Institute of Forensic Sciences, 2355 N. Stemmons Fwy, Dallas, TX 75207, USA
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Bardelli F, Giacobbe C, Ballirano P, Borelli V, Di Benedetto F, Montegrossi G, Bellis D, Pacella A. Closing the knowledge gap on the composition of the asbestos bodies. Environ Geochem Health 2023; 45:5039-5051. [PMID: 37058192 PMCID: PMC10310571 DOI: 10.1007/s10653-023-01557-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
Asbestos bodies (AB) form in the lungs as a result of a biomineralization process initiated by the alveolar macrophages in the attempt to remove asbestos. During this process, organic and inorganic material deposit on the foreign fibers forming a Fe-rich coating. The AB start to form in months, thus quickly becoming the actual interface between asbestos and the lung tissue. Therefore, revealing their composition, and, in particular, the chemical form of Fe, which is the major component of the AB, is essential to assess their possible role in the pathogenesis of asbestos-related diseases. In this work we report the result of the first x-ray diffraction measurements performed on single AB embedded in the lung tissue samples of former asbestos plant workers. The combination with x-ray absorption spectroscopy data allowed to unambiguously reveal that Fe is present in the AB in the form of two Fe-oxy(hydroxides): ferrihydrite and goethite. The presence of goethite, which can be explained in terms of the transformation of ferrihydrite (a metastable phase) due to the acidic conditions induced by the alveolar macrophages in their attempt to phagocytose the fibers, has toxicological implications that are discussed in the paper.
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Affiliation(s)
- F Bardelli
- National Research Council, Institute of Nanotechnology (CNR-Nanotec), Rome, Italy.
- Centre for the Study of Asbestos and Other Toxic Particulate, University of Torino, Turin, Italy.
| | - C Giacobbe
- Xenocs SAS, Grenoble, France
- European Synchrotron Radiation Facility, Grenoble, France
| | - P Ballirano
- Department of Earth Sciences, La Sapienza University, Rome, Italy
| | - V Borelli
- Department of Physiology and Pathology, University of Trieste, Trieste, Italy
| | - F Di Benedetto
- Department of Earth Sciences, University of Ferrara, Ferrara, Italy
| | - G Montegrossi
- National Research Council, Institute of Geoscience and Earth Resources (CNR-IGG), Florence, Italy
| | - D Bellis
- Centre for the Study of Asbestos and Other Toxic Particulate, University of Torino, Turin, Italy
| | - A Pacella
- Department of Earth Sciences, La Sapienza University, Rome, Italy
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193
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Rodrigues CHP, Mariotto LS, Castro JS, Peruquetti PH, Silva-Junior NC, Bruni AT. Acute, chronic, and post-mortem toxicity: a review focused on three different classes of new psychoactive substances. Forensic Toxicol 2023; 41:187-212. [PMID: 36604359 DOI: 10.1007/s11419-022-00657-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 12/22/2022] [Indexed: 01/07/2023]
Abstract
PURPOSE New psychoactive substances (NPS) are not controlled under the Single Convention on Narcotic Drugs of 1961 or the 1971 Convention, but they may pose a public health threat. Knowledge of the main properties and toxicological effects of these substances is lacking. According to the current Drugs Law (Law n. 11.343/2006), the Brazilian Surveillance Agency issues directives for forbidden substances in Brazil, and structural classes of synthetic cannabinoids, cathinones, and phenylethylamines are considered illicit drugs. Considering that data on these controlled substances are scattered, the main objective of this work was to collect and organize data to generate relevant information on the toxicological properties of NPS. METHODS We carried out a literature review collecting information on the acute, chronic, and post-mortem toxicity of these classes of NSP. We searched info in five scientific databases considering works from 2017 to 2021 and performed a statistical evaluation of the data. RESULTS Results have shown a general lack of studies in this field given that many NPS have not had their toxicity evaluated. We observed a significant difference in the volume of data concerning acute and chronic/post-mortem toxicity. Moreover, studies on the adverse effects of polydrug use are scarce. CONCLUSIONS More in-depth information about the main threats involving NPS use are needed.
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Affiliation(s)
- Caio H P Rodrigues
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
- INCT Forense - Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Lívia S Mariotto
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
- INCT Forense - Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Jade S Castro
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
- INCT Forense - Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Paulo H Peruquetti
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Newton C Silva-Junior
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
- INCT Forense - Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Aline T Bruni
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil.
- INCT Forense - Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil.
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194
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Hu Z, Wu L, Gan H, Lan H, Zhu B, Ye X. Toxicological effects, residue levels and risks of endocrine-disrupting chemicals in Chinese medicine: a review. Environ Sci Pollut Res Int 2023; 30:79724-79743. [PMID: 37332031 DOI: 10.1007/s11356-023-28138-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 06/02/2023] [Indexed: 06/20/2023]
Abstract
Traditional Chinese medicine (TCM) that is used worldwide possesses the satisfactory function of disease prevention, treatment and health care, and this natural medicine seems to be favored due to its low side effects. Endocrine disrupting chemicals (EDCs), which exist in all aspects of our lives, may interfere with the synthesis, action and metabolism of human sex steroid hormones, resulting in the development and fertility problems as well as obesity and the disturbance of energy homeostasis. From planting to processing, TCM may be polluted by various EDCs. Many studies pay attention to this problem, but there are still few reviews on the residues and toxicity risks of EDCs in TCM. In this paper, researches related to EDCs in TCM were screened. The possible contamination sources of TCM from planting to processing and its toxic effects were introduced. Moreover, the residues of metals, pesticides and other EDCs in TCM as well as the health risks of human exposure to EDCs through ingestion of TCM materials were reviewed.
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Affiliation(s)
- Zhiqin Hu
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Lixiang Wu
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Hongya Gan
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Huili Lan
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Bingqi Zhu
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xiaoqing Ye
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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195
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Hwang JH, Lim M, Han G, Park H, Kim YB, Park J, Jun SY, Lee J, Cho JW. A comparative study on the implementation of deep learning algorithms for detection of hepatic necrosis in toxicity studies. Toxicol Res 2023; 39:399-408. [PMID: 37398569 PMCID: PMC10313597 DOI: 10.1007/s43188-023-00173-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 07/04/2023] Open
Abstract
Deep learning has recently become one of the most popular methods of image analysis. In non-clinical studies, several tissue slides are generated to investigate the toxicity of a test compound. These are converted into digital image data using a slide scanner, which is then studied by researchers to investigate abnormalities, and the deep learning method has been started to adopt in this study. However, comparative studies evaluating different deep learning algorithms for analyzing abnormal lesions are scarce. In this study, we applied three algorithms, SSD, Mask R-CNN, and DeepLabV3+, to detect hepatic necrosis in slide images and determine the best deep learning algorithm for analyzing abnormal lesions. We trained each algorithm on 5750 images and 5835 annotations of hepatic necrosis including validation and test, augmented with 500 image tiles of 448 × 448 pixels. Precision, recall, and accuracy were calculated for each algorithm based on the prediction results of 60 test images of 2688 × 2688 pixels. The two segmentation algorithms, DeepLabV3+ and Mask R-CNN, showed over 90% of accuracy (0.94 and 0.92, respectively), whereas SSD, an object detection algorithm, showed lower accuracy. The trained DeepLabV3+ outperformed all others in recall while also successfully separating hepatic necrosis from other features in the test images. It is important to localize and separate the abnormal lesion of interest from other features to investigate it on a slide level. Therefore, we suggest that segmentation algorithms are more appropriate than object detection algorithms for use in the pathological analysis of images in non-clinical studies. Supplementary Information The online version contains supplementary material available at 10.1007/s43188-023-00173-5.
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Affiliation(s)
- Ji-Hee Hwang
- Toxicologic Pathology Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, Daejeon, 34114 Republic of Korea
| | - Minyoung Lim
- Toxicologic Pathology Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, Daejeon, 34114 Republic of Korea
| | - Gyeongjin Han
- Toxicologic Pathology Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, Daejeon, 34114 Republic of Korea
| | - Heejin Park
- Toxicologic Pathology Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, Daejeon, 34114 Republic of Korea
| | - Yong-Bum Kim
- Department of Advanced Toxicology Research, Korea Institute of Toxicology, Daejeon, 34114 Republic of Korea
| | - Jinseok Park
- Research & Development Team, LAC Inc, Seoul, 07807 Republic of Korea
| | - Sang-Yeop Jun
- Research & Development Team, LAC Inc, Seoul, 07807 Republic of Korea
| | - Jaeku Lee
- Research & Development Team, LAC Inc, Seoul, 07807 Republic of Korea
| | - Jae-Woo Cho
- Toxicologic Pathology Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, Daejeon, 34114 Republic of Korea
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196
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Mwanga HH, Baatjies R, Jeebhay MF. Occupational risk factors and exposure-response relationships for airway disease among health workers exposed to cleaning agents in tertiary hospitals. Occup Environ Med 2023; 80:361-371. [PMID: 37137692 DOI: 10.1136/oemed-2022-108763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/20/2023] [Indexed: 05/05/2023]
Abstract
OBJECTIVES This study investigated occupational risk factors and exposure-response relationships for airway disease among health workers (HWs) exposed to cleaning agents in two tertiary hospitals in South Africa and Tanzania. METHODS In this cross-sectional study, 697 participants completed questionnaire interviews while 654 underwent fractional exhaled nitric oxide (FeNO) testing. Asthma Symptom Score (ASS) was computed based on the sum of answers to five questions on asthma-related symptoms in the past 12 months. For exposure-response analyses, cleaning agent-related self-reported exposure variables were categorised into three levels (cleaning product not used; use of a cleaning product for up to 99 min per week and use of a cleaning product for ≥100 min per week). RESULTS Asthma-related outcomes (ASS and FeNO) demonstrated positive associations with medical instrument cleaning agents (orthophthalaldehyde and enzymatic cleaners) and tasks (instruments precleaning and changing sterilisation solutions) as well as patient care activities (disinfection prior to procedures and disinfecting wounds). A particularly pronounced dose-response relationship was observed between work-related ocular-nasal symptoms and medical instrument cleaning agents (orthophthalaldehyde, glutaraldehyde, enzymatic cleaners, alcohols and bleach) (OR range: 2.37-4.56) and tasks (OR range: 2.92-4.44). A strong association was also observed between ASS and use of sprays for fixed surface cleaning (mean ratio 2.81; 95% CI 1.41 to 5.59). CONCLUSIONS Specific agents for medical instrument disinfection for example, orthophthalaldehyde and enzymatic cleaners, patient care activities and use of sprays are important occupational risk factors for airway disease among HWs.
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Affiliation(s)
- Hussein H Mwanga
- Division of Occupational Medicine and Centre for Environmental & Occupational Health Research, School of Public Health, University of Cape Town, Cape Town, South Africa
- Department of Environmental and Occupational Health, School of Public Health and Social Sciences, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania, United Republic of
| | - Roslynn Baatjies
- Division of Occupational Medicine and Centre for Environmental & Occupational Health Research, School of Public Health, University of Cape Town, Cape Town, South Africa
- Department of Environmental and Occupational Studies, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, Western Cape, South Africa
| | - Mohamed Fareed Jeebhay
- Division of Occupational Medicine and Centre for Environmental & Occupational Health Research, School of Public Health, University of Cape Town, Cape Town, South Africa
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197
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What happens when you microwave that plastic bowl? Nature 2023. [PMID: 37369794 DOI: 10.1038/d41586-023-02091-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
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198
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Raciti C, Blanzaco M, Bernstein J. Death associated with ingestion of starfruit (Averrhoa carambola) in a patient with chronic kidney disease. Am J Emerg Med 2023:S0735-6757(23)00336-4. [PMID: 37394384 DOI: 10.1016/j.ajem.2023.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/28/2023] [Accepted: 06/22/2023] [Indexed: 07/04/2023] Open
Abstract
We detail a case of a 74-year-old female with a history of chronic kidney disease (CKD) and diabetes mellitus (DM) who initially presented to the Emergency Department (ED) with intractable hiccups after ingesting two whole starfruit (SF) and quickly became critically ill while in the ED. Our patient was admitted and received several rounds of hemodialysis, but efforts proved futile, as the patient expired during her hospital course. To the best of our knowledge, this is the first fatality reported due to SF ingestion in the U.S, and highlights the need for both a better understanding of SF intoxication and clearer guidelines and timing for treatment. Due to the increased mortality of patients who consume SF with a medical history of CKD or DM, it is prudent that Emergency Physicians are familiar with the clinical presentation and management options for SF toxicity.
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Affiliation(s)
- Christopher Raciti
- Department of Emergency Medicine, Mount Sinai Medical Center, 4300 Alton Road, Miami Beach, FL 33140, USA.
| | - Melba Blanzaco
- Florida Poison Information Center, Jackson Memorial Hospital, University of Miami Miller School of Medicine, Highland Professional Building, 1(st) Floor, 1801 NW 9(th) Avenue, 1(st) Floor, Miami, FL 33136, USA
| | - Jeffrey Bernstein
- Florida Poison Information Center, Jackson Memorial Hospital, University of Miami Miller School of Medicine, Highland Professional Building, 1(st) Floor, 1801 NW 9(th) Avenue, 1(st) Floor, Miami, FL 33136, USA; Department of Emergency Medicine, Jackson Memorial Hospital, 1611 N.W. 12th Avenue, Miami, FL 33136, USA
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199
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de Melo Alcântara LF, da Silva PT, de Oliveira QM, Dos Santos Souza TG, da Silva MM, Feitoza GS, Costa WK, da Conceição de Lira MA, Chagas CA, de Aguiar Júnior FCA, Dos Santos Correia MT, da Silva MV. Toxicological safety, antioxidant activity and phytochemical characterization of leaf and bark aqueous extracts of Commiphora leptophloeos (Mart.) J.B. Gillett. J Toxicol Environ Health A 2023:1-18. [PMID: 37350297 DOI: 10.1080/15287394.2023.2224827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
This study aimed to characterize the phytochemical profile of bark and leaves aqueous extract Commiphora leptophloeos, and conduct in vivo and in vitro assays to determine the presence of any toxicological consequences due to exposure. The phytochemical analysis was carried out using high-performance liquid chromatography (HPLC). The antioxidant activity was estimated utilizing DPPH free radical scavenging and phosphomolybdenum assays. Cell viability was measured by the MTT method on J774 and human adenocarcinoma cells, which were treated with concentrations of 12,5, 25, 50, 100 or 200 µg/ml of both extracts. Acute oral toxicity, genotoxicity, and mutagenicity assays were determined using a single oral dose of 2000 g/kg in male Swiss albino mice (Mus musculus). Biochemical analysis of the blood and histological analyses of the kidneys, liver, spleen, pylorus, duodenum and jejunum were undertaken. Genotoxicity and mutagenicity were determined utilizing blood samples. Gallic acid, catechin, and epicatechin were identified in the bark and chlorogenic acid in leaves. Data demonstrated a high content of phenolic compounds and flavonoids associated with significant antioxidant potential. No significant signs in damage or symptoms of toxicity were detected. No marked reduction in cell viability was found at lower concentrations tested. On histomorphometry, only the gastrointestinal organs exhibited significant difference. Renal hepatic and blood parameters were within the normal range. No apparent signs of toxicity, genotoxicity, mutagenicity or cytotoxicity were found in vivo and in vitro experiments.
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Affiliation(s)
| | - Pedro Thiago da Silva
- Programa de Pós-Graduação Em Ciências Biológicas, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | | | | | - Marllyn Marques da Silva
- Centro Acadêmico de Vitória, Universidade Federal de Pernambuco, Vitória de Santo Antão, PE, Brasil
| | - George Souza Feitoza
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - Wendeo Kennedy Costa
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife, PE, Brasil
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200
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Abstract
Fentanyl is a synthetic opioid that was approved by the FDA in the late 1960s. In the decades since, non-prescription use of fentanyl, its analogs, and structurally unrelated novel synthetic opioids (NSO) has become a worsening public health crisis. There is a clear need for accessible testing for these substances in biological specimens and in apprehended drugs. Immunoassays for fentanyl in urine are available but their performance is restricted to facilities that hold moderate complexity laboratory licenses. Immunoassays for other matrices such as oral fluid (OF), blood, and meconium have been developed but are not widely available. Point of care tests (POCT), such as lateral flow immunoassays or fentanyl test strips (FTS), are widely available but not approved by the FDA for clinical use. All immunoassays are vulnerable to false positive and false negative results. Immunoassays may or may not be able to detect fentanyl analogs and NSOs. Mass spectrometry (MS) can accurately and reliably measure fentanyl and its major metabolite norfentanyl in urine and oral fluid. MS is available at reference laboratories and large hospitals. Liquid chromatography paired with tandem mass spectrometry (LC-MS/MS) is the most widely used method and has outstanding specificity and sensitivity for fentanyl and norfentanyl. When compared to immunoassays, MS is more expensive, requires more technical skill, and takes longer to result. Newer mass spectrometry methods can measure fentanyl analogs and NSO. Both mass spectrometry assays and immunoassays [in the form of fentanyl test strips (FTS)] have potential use in harm reduction programs.
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Affiliation(s)
- Sacha Uljon
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States.
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