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Eskanlou A, Arnold BJ. An evaluation of pyrite as a component of respirable coal dust. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135340. [PMID: 39096642 DOI: 10.1016/j.jhazmat.2024.135340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/25/2024] [Accepted: 07/25/2024] [Indexed: 08/05/2024]
Abstract
Over the past two decades, the rise in coal worker's pneumoconiosis has prompted research into the effects of respirable coal dust components. This study explores how coal-pyrites produce hydroxyl radicals (•OH), a reactive oxygen species closely associated with particle toxicity, and assesses the ability of safe chemical additives to reduce •OH production at various pH levels. Promising candidates were evaluated in various solutions, including tap and process waters and simulated lung fluid. We employed electrokinetic measurements, infrared and X-ray photoelectron spectroscopies, and ab initio atomistic simulations to analyze particle surfaces. The study also looked at how surface aging affects •OH production. Our results show that •OH generation of the pyrite varies and is catalyzed by elements like silicon, aluminum, and iron in pyrite. Carboxymethyl cellulose was effective in reducing •OH production by targeting surface sulfide and silicon sites and affecting surface hydration and charge. Atmospheric aging was found to increase •OH production, especially in the pyrite with high iron and silicon and low calcium contents, relative to other samples. This highlights the role of the pyrite surface properties and chemical composition, and the solution pH and composition in •OH generation by coal-pyrites.
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Affiliation(s)
- Amir Eskanlou
- John and Willie Leone Family Department of Energy and Mineral Engineering, College of Earth and Mineral Science, The Pennsylvania State University, University Park, PA 16802, USA
| | - Barbara J Arnold
- John and Willie Leone Family Department of Energy and Mineral Engineering, College of Earth and Mineral Science, The Pennsylvania State University, University Park, PA 16802, USA.
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2
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Deiab NS, Kodous AS, Mahfouz MK, Said AM, Ghobashy MM, Abozaid OAR. Smart Hesperidin/Chitosan Nanogel Mitigates Apoptosis and Endoplasmic Reticulum Stress in Fluoride and Aluminum-Induced Testicular Injury. Biol Trace Elem Res 2024; 202:4106-4124. [PMID: 38087036 PMCID: PMC11252208 DOI: 10.1007/s12011-023-03991-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 11/29/2023] [Indexed: 07/18/2024]
Abstract
Fluoride and aluminum are ubiquitous toxic metals with adverse reproductive effects. The citrus flavonoid hesperidin has protective activities but poor solubility and bioavailability. Nanoparticulate delivery systems can improve flavonoid effectiveness. We conducted this study to prepare a pH-responsive chitosan-based nanogel for hesperidin delivery and evaluate its effectiveness against sodium fluoride (NaF) and aluminum chloride (AlCl3) induced testicular toxicity in mice. The nanogel was synthesized using 2 kGy gamma irradiation, enabling a size under 200 nm and enhanced hesperidin release at pH 6 matching testicular acidity. Male mice received 200 mg/kg AlCl3 and 10 mg/kg NaF daily for 30 days. Hesperidin nanogel at 20 mg/kg was administered orally either prophylactically (pretreatment) or after intoxication (posttreatment). The results showed that AlCl3 + NaF induced severe oxidative stress, hormonal disturbance, apoptosis, and endoplasmic reticulum stress, evidenced by significant changes in the studied parameters and testicular histological damage. Hesperidin nanogel administration significantly inhibited oxidative stress markers, restored luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone levels, and alleviated tissue damage compared to the intoxicated group. It also downregulated the expression level of pro-apoptotic genes Bax, caspase-3, caspase-9, and P38MAPK, while upregulating the expression level of the anti-apoptotic BCL2 gene. Endoplasmic reticulum stress sensors PERK, ATF6, and IRE-α were also downregulated by the nanogel. The chitosan-based nanogel enhanced the delivery and efficacy of poorly bioavailable hesperidin, exhibiting remarkable protective effects against AlCl3 and NaF reproductive toxicity. This innovative nanosystem represents a promising approach to harnessing bioactive phytochemicals with delivery challenges, enabling protective effects against chemical-induced testicular damage.
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Affiliation(s)
- Nora S Deiab
- Biochemistry and Molecular Biology Department, Faculty of Veterinary Medicine, Benha University, Benha, Al Qalyubiyah, Egypt.
| | - Ahmad S Kodous
- Radiation Biology Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
- Department of Molecular Oncology, Cancer Institute (WIA), P.O. Box 600036, 38, Sardar Patel Road, Chennai, Tamilnadu, India
| | - Mohamed K Mahfouz
- Biochemistry and Molecular Biology Department, Faculty of Veterinary Medicine, Benha University, Benha, Al Qalyubiyah, Egypt
| | - Alshaimaa M Said
- Biochemistry and Molecular Biology Department, Faculty of Veterinary Medicine, Benha University, Benha, Al Qalyubiyah, Egypt
| | - Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Omayma A R Abozaid
- Biochemistry and Molecular Biology Department, Faculty of Veterinary Medicine, Benha University, Benha, Al Qalyubiyah, Egypt
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Shahabuddin F, Naseem S, Alam T, Khan AA, Khan F. Chronic aluminium chloride exposure induces redox imbalance, metabolic distress, DNA damage, and histopathologic alterations in Wistar rat liver. Toxicol Ind Health 2024:7482337241269784. [PMID: 39138847 DOI: 10.1177/07482337241269784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Aluminium, a ubiquitous environmental toxicant, is distinguished for eliciting a broad range of physiological, biochemical, and behavioural alterations in laboratory animals and humans. The present work was conducted to study the functional and structural changes induced by aluminium in rat liver. Twenty five adult male Wistar rats (150-200 g) were randomly divided into five groups; control group and four Al-treated groups viz: Al 1 (25 mg AlCl3/kg b.wt), Al 2 (35 mg AlCl3/kg b.wt), Al 3 (45 mg AlCl3/kg b.wt), and Al 4 (55 mg AlCl3/kg b.wt). Rats in the aluminium-treated groups were administered AlCl3 for 30 days through oral gavage. Aluminium significantly increased the serum levels of liver function markers (ALT, AST, and ALP), phospholipids, and cholesterol. The activities of hepatocyte membrane (ALP, GGT, and LAP) and carbohydrate metabolic (G6P, F16BP, HK, LDH, MDH, ME, and G6PDH) enzymes were significantly altered by AlCl3 administration. Prolonged Al exposure induced oxidative stress in the liver, as evident by significant hepatocellular DNA damage, increased lipid peroxidation, and decreased non-enzymatic and enzymatic antioxidants. The toxic effects observed in this study were AlCl3 dose-dependent. Histopathological examination of liver sections revealed enlargement of sinusoidal spaces, derangement of the hepatic chord, loss of discrete hepatic cell boundaries, congestion of hepatic sinusoids, and degeneration of hepatocytes in Al-intoxicated rats. In conclusion, aluminium causes severe hepatotoxicity by inhibiting the hepatocyte membrane enzymes and disrupting the liver's energy metabolism and antioxidant defence.
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Affiliation(s)
- Farha Shahabuddin
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Samina Naseem
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Tauseef Alam
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Aijaz Ahmed Khan
- Department of Anatomy, Faculty of Medicine, JN Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Farah Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Boopathi S, Mendonca E, Gandhi A, Rady A, Darwish NM, Arokiyaraj S, Kumar TTA, Pachaiappan R, Guru A, Arockiaraj J. Exploring the Combined Effect of Exercise and Apigenin on Aluminium-Induced Neurotoxicity in Zebrafish. Mol Neurobiol 2024; 61:5320-5336. [PMID: 38191695 DOI: 10.1007/s12035-024-03913-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 12/30/2023] [Indexed: 01/10/2024]
Abstract
Aluminium (AL) is a strong environmental neurotoxin linked to neurodegenerative disorders. Widespread industrial use leads to its presence in water systems, causing bioaccumulation in organisms. This, in turn, results in the bioaccumulation of AL in various organisms. Several studies have highlighted the benefits of enhanced physical activity in combating neurodegenerative diseases. Meanwhile widespread presence of apigenin in aquatic environment has been largely overlooked, in terms of its potential to counter AL-induced neurotoxicity. The combined impact of exercise and apigenin in mitigating the effects of AL-induced neurotoxicity in aquatic animals remains unexplored. Hence, the objective of this study is to determine whether the combined treatment of exercise and apigenin can effectively alleviate the chronic neurotoxicity induced by AL. Zebrafish that were exposed to AL showed behaviours resembling anxiety, increased aggression, unusual swimming pattern, and memory impairment, which are typical features observed in Alzheimer's disease (AD)-like syndrome. Combined treatment of exercise and apigenin protects zebrafish from AL-induced neurotoxicity, which was measured by improvements in memory, reduced anxiety and aggression, and increased levels of antioxidant enzymes and acetylcholinesterase (AChE) activity. Furthermore, AL exposure is associated with increased expression of genes related to neuroinflammation and AD. However, synergistic effect of exercise and apigenin counteract this effect in AL-treated zebrafish. These findings suggest that AL is involved in neurodegenerative diseases in fish, which could affect the integrity of aquatic ecosystem. Hence, there is a strong correlation between enhanced physical activity, apigenin, and the well-being of the ecosystem.
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Affiliation(s)
- Seenivasan Boopathi
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, Chengalpattu District, 603203, India
| | - Edrea Mendonca
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, Chengalpattu District, 603203, India
| | - Akash Gandhi
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, Chengalpattu District, 603203, India
| | - Ahmed Rady
- Department of Zoology, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Noura M Darwish
- Biochemistry Department, Faculty of Science Ain Shams University, Abbasaya, P.O. Box, Cairo, 11566, Egypt
| | - Selvaraj Arokiyaraj
- Department of Food Science & Biotechnology, Sejong University, Seoul, 05006, Korea
| | | | - Raman Pachaiappan
- Department of Biotechnology, Faculty of Engineering and Technology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, Chengalpattu District, 603203, India
| | - Ajay Guru
- Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 600 077, India.
| | - Jesu Arockiaraj
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, Chengalpattu District, 603203, India.
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Kadhim A, Ben Slima A, Alneamah G, Makni M. Assessment of Histopathological Alterations and Oxidative Stress in the Liver and Kidney of Male Rats following Exposure to Aluminum Chloride. J Toxicol 2024; 2024:3997463. [PMID: 39035854 PMCID: PMC11259504 DOI: 10.1155/2024/3997463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 06/23/2024] [Accepted: 06/26/2024] [Indexed: 07/23/2024] Open
Abstract
The study aims to investigate the residual and histopathological effects of chronic aluminum chloride (AlCl3) toxicity in the kidney and liver of male rats. After 30-, 60-, and 90-day exposure period, analyses were conducted to assess the toxicity in the kidney and liver. The results showed that the concentration of AlCl3 in the kidney and liver increased significantly in 30-, 60-, and 90-day periods. The effects of oxidative stress on the kidneys and liver were dose- and time-dependent. Levels of malondialdehyde (MDA) significantly increased when exposed to AlCl3 groups. Conversely, the activity of antioxidant parameters, including reduced glutathione (GSH), catalase (CAT), and superoxide dismutase (SOD), significantly decreased in the AlCl3 exposed groups, indicating compromised oxidant mechanisms. Both the kidney and liver exhibited severe tissue damage, including necrosis, fibrosis, and inflammatory cell infiltration, in rats exposed to AlCl3. Kidney sections showed hyperplasia of the epithelial cells lining the renal tubules, resembling finger-like structures. Liver sections displayed severe lobular hyperplasia and an increase in mitotic figures. Our study suggests that AlCl3 has a detrimental impact on these vital organs and emphasizes the importance of monitoring and mitigating aluminum exposure, particularly where it is present in high concentration.
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Affiliation(s)
- Anfal Kadhim
- Environmental Sciences and Sustainable Development Laboratory LASEDLR 18ES32University of Sfax, Sfax, Tunisia
| | - Ahlem Ben Slima
- Department of Food TechnologyHigh Institute of Biotechnology of SfaxUniversity of Sfax, Sfax, Tunisia
| | - Ghusoon Alneamah
- Department of PathologyCollege of Veterinary MedicineUniversity AL-Qasim Green, Al Qasim, Iraq
| | - Mohamed Makni
- Environmental Sciences and Sustainable Development Laboratory LASEDLR 18ES32University of Sfax, Sfax, Tunisia
- Department of Food TechnologyHigh Institute of Biotechnology of SfaxUniversity of Sfax, Sfax, Tunisia
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Blaylock RL. Additive aluminum as a cause of induced immunoexcitoxicity resulting in neurodevelopmental and neurodegenerative disorders: A biochemical, pathophysiological, and pharmacological analysis. Surg Neurol Int 2024; 15:171. [PMID: 38840623 PMCID: PMC11152537 DOI: 10.25259/sni_296_2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 06/07/2024] Open
Abstract
Much has been learned about the neurotoxicity of aluminum over the past several decades in terms of its ability to disrupt cellular function, result in slow accumulation, and the difficulty of its removal from cells. Newer evidence suggests a central pathophysiological mechanism may be responsible for much of the toxicity of aluminum and aluminofluoride compounds on the brain and spinal cord. This mechanism involves activation of the brain's innate immune system, primarily the microglia, astrocytes, and macrophages, with a release of neurotoxic concentrations of excitotoxins and proinflammatory cytokines, chemokines, and immune mediators. Many studies suggest that excitotoxicity plays a significant role in the neurotoxic action of several metals, including aluminum. Recently, researchers have found that while most of the chronic pathology involved in the observed neurodegenerative effects of these metals are secondary to prolonged inflammation, it is the enhancement of excitotoxicity by the immune mediators that are responsible for most of the metal's toxicity. This enhancement occurs through a crosstalk between cytokines and glutamate-related mechanisms. The author coined the name immunoexcitotoxicity to describe this process. This paper reviews the evidence linking immunoexcitotoxicity to aluminum's neurotoxic effects and that a slow accumulation of aluminum may be the cause of neurodevelopmental defects as well as neurodegeneration in the adult.
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Affiliation(s)
- Russell L. Blaylock
- Theoretical Neuroscience Research, LLC, Ridgeland, Mississippi, United States
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7
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Kanuri SH, Sirrkay PJ. Adjuvants in COVID-19 vaccines: innocent bystanders or culpable abettors for stirring up COVID-heart syndrome. Ther Adv Vaccines Immunother 2024; 12:25151355241228439. [PMID: 38322819 PMCID: PMC10846003 DOI: 10.1177/25151355241228439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 01/05/2024] [Indexed: 02/08/2024] Open
Abstract
COVID-19 infection is a multi-system clinical disorder that was associated with increased morbidity and mortality. Even though antiviral therapies such as Remdesvir offered modest efficacy in reducing the mortality and morbidity, they were not efficacious in reducing the risk of future infections. So, FDA approved COVID-19 vaccines which are widely administered in the general population worldwide. These COVID-19 vaccines offered a safety net against future infections and re-infections. Most of these vaccines contain inactivated virus or spike protein mRNA that are primarily responsible for inducing innate and adaptive immunity. These vaccines were also formulated to contain supplementary adjuvants that are beneficial in boosting the immune response. During the pandemic, clinicians all over the world witnessed an uprise in the incidence and prevalence of cardiovascular diseases (COVID-Heart Syndrome) in patients with and without cardiovascular risk factors. Clinical researchers were not certain about the underlying reason for the upsurge of cardiovascular disorders with some blaming them on COVID-19 infections while others blaming them on COVID-19 vaccines. Based on the literature review, we hypothesize that adjuvants included in the COVID-19 vaccines are the real culprits for causation of cardiovascular disorders. Operation of various pathological signaling events under the influence of these adjuvants including autoimmunity, bystander effect, direct toxicity, anti-phospholipid syndrome (APS), anaphylaxis, hypersensitivity, genetic susceptibility, epitope spreading, and anti-idiotypic antibodies were partially responsible for stirring up the onset of cardiovascular disorders. With these mechanisms in place, a minor contribution from COVID-19 virus itself cannot be ruled out. With that being said, we strongly advocate for careful selection of vaccine adjuvants included in COVID-19 vaccines so that future adverse cardiac disorders can be averted.
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Affiliation(s)
- Sri Harsha Kanuri
- Research Fellow, Stark Neurosciences Institute, Indiana University School of Medicine, 320 W 15 ST, Indianapolis, IN 46202, USA
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8
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Sanajou S, Yirün A, Demirel G, Çakir DA, Şahin G, Erkekoğlu P, Baydar T. Antioxidant dihydrolipolic acid protects against in vitro aluminum-induced toxicity. J Appl Toxicol 2023; 43:1793-1805. [PMID: 37409350 DOI: 10.1002/jat.4513] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/19/2023] [Indexed: 07/07/2023]
Abstract
Dihydrolipoic acid (DHLA) is a natural antioxidant known for its ability to counteract metal toxicity and oxidative stress. It has shown the potential to safeguard cells from harmful environmental substances. It may hold therapeutic benefits in treating neurodegenerative disorders by defending against oxidative damage and chronic inflammation. Thus, this study aimed to explore the potential neuroprotective effects of DHLA against aluminum (Al)-induced toxicity using an Alzheimer's disease (AD) model in vitro. The study focused on two important pathways: GSK-3β and the Wnt signaling pathways. The SH-SY5Y cell line was differentiated to establish AD, and the study group were as follows: control, Al, DHLA, Al-DHLA, AD, AD-Al, AD-DHLA, and AD-Al-DHLA. The impact of DHLA on parameters related to oxidative stress was assessed. The activity of the GSK-3β pathway was measured by evaluating the levels of PPP1CA, PP2A, GSK-3β, and Akt. The Wnt signaling pathway was assessed by measuring Wnt/β-catenin in the different study groups. Exposure to DHLA significantly reduced oxidative stress by effectively decreasing the levels of reactive oxygen species, thereby protecting against protein oxidation and limiting the production of malonaldehyde. Moreover, the DHLA-treated groups exhibited a remarkable increase in the total antioxidant capacity. Furthermore, the study observed an upregulation of the Wnt signaling pathway and a downregulation of the GSK-3β pathway in the groups treated with DHLA. In summary, the neuroprotective effects of DHLA, primarily achieved by reducing oxidative stress and modulating critical imbalanced pathways associated with AD, indicate its potential as a promising addition to the treatment regimens of AD patients.
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Affiliation(s)
- Sonia Sanajou
- Faculty of Pharmacy, Department of Toxicology, Hacettepe University, Ankara, Turkey
| | - Anil Yirün
- Faculty of Pharmacy, Department of Toxicology, Hacettepe University, Ankara, Turkey
- Faculty of Pharmacy, Department of Toxicology, Cukurova University, Adana, Turkey
| | - Göksun Demirel
- Faculty of Pharmacy, Department of Toxicology, Cukurova University, Adana, Turkey
| | - Deniz Arca Çakir
- Faculty of Pharmacy, Department of Toxicology, Hacettepe University, Ankara, Turkey
- Vaccine Institute, Department of Vaccine Technology, Hacettepe University, Ankara, Turkey
| | - Gönül Şahin
- Faculty of Pharmacy, Department of Toxicology, Hacettepe University, Ankara, Turkey
| | - Pinar Erkekoğlu
- Faculty of Pharmacy, Department of Toxicology, Hacettepe University, Ankara, Turkey
- Vaccine Institute, Department of Vaccine Technology, Hacettepe University, Ankara, Turkey
| | - Terken Baydar
- Faculty of Pharmacy, Department of Toxicology, Hacettepe University, Ankara, Turkey
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Barra PJ, Duran P, Delgado M, Viscardi S, Claverol S, Larama G, Dumont M, Mora MDLL. Proteomic response to phosphorus deficiency and aluminum stress of three aluminum-tolerant phosphobacteria isolated from acidic soils. iScience 2023; 26:107910. [PMID: 37790272 PMCID: PMC10543181 DOI: 10.1016/j.isci.2023.107910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/27/2023] [Accepted: 09/11/2023] [Indexed: 10/05/2023] Open
Abstract
Aluminum (Al)-tolerant phosphobacteria enhance plant growth in acidic soils by improving Al complexing and phosphorus (P) availability. However, the impact of Al stress and P deficiency on bacterial biochemistry and physiology remains unclear. We investigated the single and mutual effects of Al stress (10 mM) and P deficiency (0.05 mM) on the proteome of three aluminum-tolerant phosphobacteria: Enterobacter sp. 198, Enterobacter sp. RJAL6, and Klebsiella sp. RCJ4. Cultivated under varying conditions, P deficiency upregulated P metabolism proteins while Al exposure downregulated iron-sulfur and heme-containing proteins and upregulated iron acquisition proteins. This demonstrated that Al influence on iron homeostasis and bacterial central metabolism. This study offers crucial insights into bacterial behavior in acidic soils, benefiting the development of bioinoculants for crops facing Al toxicity and P deficiency. This investigation marks the first proteomic study on the interaction between high Al and P deficiency in acid soils-adapted bacteria.
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Affiliation(s)
- Patricio Javier Barra
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
- Biocontrol Research Laboratory, Universidad de La Frontera, Temuco 4811230, Chile
| | - Paola Duran
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
- Biocontrol Research Laboratory, Universidad de La Frontera, Temuco 4811230, Chile
- Facultad de Ciencias Agropecuarias y Medioambiente, Departamento de Producción Agropecuaria, Universidad de La Frontera, Temuco 4811230, Chile
| | - Mabel Delgado
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Sharon Viscardi
- Escuela de la Salud, Campus San Francisco, Universidad Católica de Temuco, Temuco 4811230, Chile
| | - Stéphane Claverol
- Plateforme Protéome, Centre Génomique Fonctionnelle de Bordeaux, Université de Bordeaux, Bordeaux, France
| | - Giovanni Larama
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
- Biocontrol Research Laboratory, Universidad de La Frontera, Temuco 4811230, Chile
| | - Marc Dumont
- School of Biological Sciences, University of Southampton, Southampton, UK
| | - María de la Luz Mora
- Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
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Silva-Brea D, de Sancho D, Lopez X. Influence of metal binding on the conformational landscape of neurofilament peptides. Phys Chem Chem Phys 2023; 25:26429-26442. [PMID: 37551731 DOI: 10.1039/d3cp03179a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
In order to understand the preferred modes of chelation in metal-binding peptides, quantum mechanical calculations can be used to compute energies, resulting in a hierarchy of binding affinities. These calculations often produce increasing stabilization energies the higher the coordination of the complex. However, as the coordination of a metal increases, the conformational freedom of the polypeptide chain is inevitably reduced, resulting in an entropic penalty. Estimating the magnitude of this penalty from the many different degrees of freedom of biomolecular systems is very challenging, and as a result this contribution to the free energy is often ignored. Here we explore this problem focusing on a family of phosphorylated neuropeptides that bind to aluminum. We find that there is a general negative correlation between both stabilization energy and entropy. Our results suggest that a subtle interplay between enthalpic and entropic forces will determine the population of the most favourable species. Additionally, we discuss the requirements for a possible "Metal Ion Hypothesis" based on our findings.
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Affiliation(s)
- David Silva-Brea
- Donostia International Physics Center (DIPC), PK 1072, 20080 Donostia San-Sebastian, Spain.
- Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Kimika Fakultatea, UPV/EHU, Spain
| | - David de Sancho
- Donostia International Physics Center (DIPC), PK 1072, 20080 Donostia San-Sebastian, Spain.
- Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Kimika Fakultatea, UPV/EHU, Spain
| | - Xabier Lopez
- Donostia International Physics Center (DIPC), PK 1072, 20080 Donostia San-Sebastian, Spain.
- Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Kimika Fakultatea, UPV/EHU, Spain
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11
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Mould R, Sargent PW, Huang Y, Fields AL, Zhang L, Herbert FC, Stewart SL, Wang T. Impact of Primary Container Closure System on PS80 Oxidation and the Mechanistic Understanding. Pharm Res 2023; 40:1965-1976. [PMID: 37434039 DOI: 10.1007/s11095-023-03556-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/20/2023] [Indexed: 07/13/2023]
Abstract
PURPOSE Polysorbate oxidation can potentially lead to protein degradation and loss of potency, which has been a challenge for the pharmaceutical industry for decades. Many factors have been reported to impact polysorbate oxidation rate, including types of elemental impurities, peroxide content, pH, light exposure, grades of polysorbate, etc. Even though there are many publications in this field, the impact of primary container closure system on PS80 oxidation has not been systematically studied or reported. The purpose of the current study is to close this gap. METHODS Placebo PS80 formulations were prepared and filled into different container-closure systems (CCS), including different types of glass vials and polymer vials. Oleic acid content was monitored on stability as a surrogate value for PS80 content, which will decline upon oxidation. ICP-MS analysis and metal spiking studies were carried out to correlate the PS80 oxidation rate with metals leached from primary containers. RESULTS PS80 degrades via oxidation at the fastest rate in glass vials with high coefficient of expansion (COE), followed by glass vials with low coefficient of expansion, while polymer vials minimized the oxidation of PS80 in most formulation conditions explored in this paper. ICP-MS analysis demonstrated that 1) 51 COE glass has more metal leachables than 33 COE glass in this study; and 2) More metal leachables correlates with faster PS80 oxidation. Metal spiking studies confirmed the hypothesis that aluminum and iron have a synergistic catalysis effect on PS80 oxidation. CONCLUSIONS Primary containers of drug products play a significant role in the rate of PS80 oxidation. This study revealed a new major contributor to PS80 oxidation and potential mitigation strategy for biological drug products.
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Affiliation(s)
- Ryan Mould
- Lilly Research Laboratories: Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | - Yining Huang
- Lilly Research Laboratories: Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Allison L Fields
- Lilly Research Laboratories: Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Lin Zhang
- Lilly Research Laboratories: Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | | | - Tingting Wang
- Lilly Research Laboratories: Eli Lilly and Company, Indianapolis, Indiana, USA.
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Haridevamuthu B, Raj D, Kesavan D, Muthuraman S, Kumar RS, Mahboob S, Al-Ghanim KA, Almutairi BO, Arokiyaraj S, Gopinath P, Arockiaraj J. Trihydroxy piperlongumine protects aluminium induced neurotoxicity in zebrafish: Behavioral and biochemical approach. Comp Biochem Physiol C Toxicol Pharmacol 2023; 268:109600. [PMID: 36889534 DOI: 10.1016/j.cbpc.2023.109600] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/22/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023]
Abstract
Aluminium (Al) is proven to be a potent environmental neurotoxin involved in progressive neurodegeneration. Al primarily induces oxidative stress by free radical generation in the brain, followed by neuronal apoptosis. Antioxidants are promising therapeutic options for Al toxicity. Piperlongumine is traditionally long known for its medicinal properties. Therefore, the present study has been designed to explore the antioxidant role of trihydroxy piperlongumine (THPL) against Al-induced neurotoxicity in the zebrafish model. Zebrafish exposed to AlCl3 exhibited higher oxidative stress and altered locomotion. Adult fish displayed anxiety comorbid with depression phenotype. THPL increases antioxidant enzyme activity by quenching Al-induced free radicals and lipid peroxidation, thus minimizing oxidative damage in the brain. THPL rescues behavior deficits and improves anxiety-like phenotype in adult fish. Histological alterations caused by Al were also attenuated on administration with THPL. Results of the study demonstrate the neuroprotective role of THPL against Al-induced oxidative damage and anxiety, which could be exploited as a psychopharmacological drug.
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Affiliation(s)
- B Haridevamuthu
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur 603 203, Chennai, Tamil Nadu, India. https://twitter.com/haridevamuthub
| | - David Raj
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur 603 203, Chennai, Tamil Nadu, India
| | - D Kesavan
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur 603 203, Chennai, Tamil Nadu, India
| | - Subramani Muthuraman
- Chemistry Division, School of Advanced Sciences, VIT University Chennai Campus, Chennai 600 127, Tamil Nadu, India
| | - Rajendran Saravana Kumar
- Chemistry Division, School of Advanced Sciences, VIT University Chennai Campus, Chennai 600 127, Tamil Nadu, India
| | - Shahid Mahboob
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Khalid Abdullah Al-Ghanim
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Bader O Almutairi
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Selvaraj Arokiyaraj
- Department of Food Science and Biotechnology, Sejong University, Seoul 05006, Republic of Korea
| | - Pushparathinam Gopinath
- Department of Chemistry, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Chennai, Tamil Nadu, India.
| | - Jesu Arockiaraj
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur 603 203, Chennai, Tamil Nadu, India.
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Shaikh SA, Muthuraman A. Tocotrienol-Rich Fraction Ameliorates the Aluminium Chloride-Induced Neurovascular Dysfunction-Associated Vascular Dementia in Rats. Pharmaceuticals (Basel) 2023; 16:828. [PMID: 37375775 DOI: 10.3390/ph16060828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/11/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Neurovascular dysfunction leads to the second most common type of dementia, i.e., vascular dementia (VaD). Toxic metals, such as aluminium, increase the risk of neurovascular dysfunction-associated VaD. Hence, we hypothesized that a natural antioxidant derived from palm oil, i.e., tocotrienol-rich fraction (TRF), can attenuate the aluminium chloride (AlCl3)-induced VaD in rats. Rats were induced with AlCl3 (150 mg/kg) intraperitoneally for seven days followed by TRF treatment for twenty-one days. The elevated plus maze test was performed for memory assessment. Serum nitrite and plasma myeloperoxidase (MPO) levels were measured as biomarkers for endothelial dysfunction and small vessel disease determination. Thiobarbituric acid reactive substance (TBARS) was determined as brain oxidative stress marker. Platelet-derived growth factor-C (PDGF-C) expression in the hippocampus was identified using immunohistochemistry for detecting the neovascularisation process. AlCl3 showed a significant decrease in memory and serum nitrite levels, while MPO and TBARS levels were increased; moreover, PDGF-C was not expressed in the hippocampus. However, TRF treatment significantly improved memory, increased serum nitrite, decreased MPO and TBARS, and expressed PDGF-C in hippocampus. Thus, the results imply that TRF reduces brain oxidative stress, improves endothelial function, facilitates hippocampus PDGF-C expression for neovascularisation process, protects neurons, and improves memory in neurovascular dysfunction-associated VaD rats.
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Affiliation(s)
- Sohrab A Shaikh
- Pharmacology Unit, Faculty of Pharmacy, AIMST University, Semeling, Bedong 08100, Kedah, Malaysia
| | - Arunachalam Muthuraman
- Pharmacology Unit, Faculty of Pharmacy, AIMST University, Semeling, Bedong 08100, Kedah, Malaysia
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14
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Wang Y, Han X, Zhang J, Zhou MX, Liu AL. Using Pgst-4::GFP-transformed Caenorhabditis elegans for drinking water quality monitoring. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:675. [PMID: 37188927 DOI: 10.1007/s10661-023-11349-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 05/03/2023] [Indexed: 05/17/2023]
Abstract
Biological effect-based monitoring is essential for predicting or alerting to a possible deterioration in drinking water quality. In the present study, a reporter gene assay based on oxidative stress-mediated Pgst-4::GFP induction in the Caenorhabditis elegans strain VP596 (VP596 assay) was assessed for its applicability in evaluating drinking water safety and quality. This assay was used to measure the oxidative stress response in VP596 worms exposed to six ubiquitous components (As3+, Al3+, F-, NO3--N, CHCl3, and residual chlorine) in drinking water, eight mixtures of these six components designed through orthogonal design, ninety-six unconcentrated water samples from source to tap water in two supply systems, and organic extracts (OEs) of twenty-five selected water samples. Pgst-4::GFP fluorescence was not induced by Al3+, F-, NO3--N, and CHCl3, and was significantly enhanced by As3+ and residual chlorine only at concentrations higher than their respective drinking water guideline levels. Pgst-4::GFP induction was not detected in any of the six-component mixtures. Induction of Pgst-4::GFP was observed in 9.4% (3/32) of the source water samples but not in the drinking water samples. However, a notable induction effect was revealed in the three OEs of drinking water, with a relative enrichment factor of 200. These results suggest that the VP596 assay has limited utility for screening drinking water safety by testing unconcentrated water samples; however, it offers a supplemental in vivo tool for prioritizing water samples for an enhanced quality assessment, monitoring pollutant removal performance by drinking water treatment plants, and evaluating water quality in water supplies.
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Affiliation(s)
- Yan Wang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xue Han
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Jie Zhang
- Center of Water Quality Monitoring, Wuhan Water Group Company Limited, Wuhan, 430034, China
| | - Meng-Xuan Zhou
- Center of Water Quality Monitoring, Wuhan Water Group Company Limited, Wuhan, 430034, China
| | - Ai-Lin Liu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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15
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Gaur A, Nayak P, Ghosh S, Sengupta T, Sakthivadivel V. Aluminum as a Possible Cause Toward Dyslipidemia. Indian J Occup Environ Med 2023; 27:112-119. [PMID: 37600652 PMCID: PMC10434801 DOI: 10.4103/ijoem.ijoem_349_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/24/2022] [Indexed: 08/22/2023] Open
Abstract
Aluminum, the third most abundant metal present in the earth's crust, is present almost in all daily commodities we use, and exposure to it is unavoidable. The interference of aluminum with various biochemical reactions in the body leads to detrimental health effects, out of which aluminum-induced neurodegeneration is widely studied. However, the effect of aluminum in causing dyslipidemia cannot be neglected. Dyslipidemia is a global health problem, which commences to the cosmic of non-communicable diseases. The interference of aluminum with various iron-dependent enzymatic activities in the tri-carboxylic acid cycle and electron transport chain results in decreased production of mitochondrial adenosine tri-phosphate. This ultimately contributes to oxidative stress and iron-mediated lipid peroxidation. This mitochondrial dysfunction along with modulation of α-ketoglutarate and L-carnitine perturbs lipid metabolism, leading to the atypical accumulation of lipids and dyslipidemia. Respiratory chain disruption because of the accumulation of reduced nicotinamide adenine di-nucleotide as a consequence of oxidative stress and the stimulatory effect of aluminum exposure on glycolysis causes many health issues including fat accumulation, obesity, and other hepatic disorders. One major factor contributing to dyslipidemia and enhanced pro-inflammatory responses is estrogen. Aluminum, being a metalloestrogen, modulates estrogen receptors, and in this world of industrialization and urbanization, we could corner down to metals, particularly aluminum, in the development of dyslipidemia. As per PRISMA guidelines, we did a literature search in four medical databases to give a holistic view of the possible link between aluminum exposure and various biochemical events leading to dyslipidemia.
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Affiliation(s)
- Archana Gaur
- Department of Physiology, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India
| | - Prasunpriya Nayak
- Department of Physiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Sutirtha Ghosh
- Department of Physiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Trina Sengupta
- Department of Physiology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Varatharajan Sakthivadivel
- Department of General Medicine, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India
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Isaev NK, Genrikhs EE, Stelmashook EV. Antioxidant Thymoquinone and Its Potential in the Treatment of Neurological Diseases. Antioxidants (Basel) 2023; 12:antiox12020433. [PMID: 36829993 PMCID: PMC9952318 DOI: 10.3390/antiox12020433] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/04/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Oxidative stress is one of the main pathogenic factors of neuron damage in neurodegenerative processes; this makes it an important therapeutic target to which the action of neuroprotectors should be directed. One of these drugs is thymoquinone. According to modern data, this substance has a wide range of pharmacological activity, including neuroprotective, which was demonstrated in experimental modeling of various neurodegenerative diseases and pathological conditions of the brain. The neuroprotective effect of thymoquinone is largely due to its antioxidant ability. Currently available data show that thymoquinone is an effective means to reduce the negative consequences of acute and chronic forms of cerebral pathology, leading to the normalization of the content of antioxidant enzymes and preventing an increase in the level of lipid peroxidation products. Antioxidant properties make this substance a promising basis for the development of prototypes of therapeutic agents aimed at the treatment of a number of degenerative diseases of the central nervous system.
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Affiliation(s)
- Nickolay K. Isaev
- Research Center of Neurology, 125367 Moscow, Russia
- Biological Faculty, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | | | - Elena V. Stelmashook
- Research Center of Neurology, 125367 Moscow, Russia
- Correspondence: ; Tel.: +7-(495)-9171908
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Maghraoui S, Florea A, Ayadi A, Matei H, Tekaya L. Changes in Organ Weight, Sperm Quality and Testosterone Levels After Aluminum (Al) and Indium (In) Administration to Wistar Rats. Biol Trace Elem Res 2023; 201:766-775. [PMID: 35262856 DOI: 10.1007/s12011-022-03180-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 02/22/2022] [Indexed: 01/21/2023]
Abstract
BACKGROUND Aluminum and indium are widely used in industrial manufacturing, in pharmaceutical products, in medical treatments, and in food packaging, so they could reach organisms by different way. In order to clarify whether these elements are dangerous, we already demonstrated the ultrastructural modifications observed in the testicles, the epididymides, and the seminal vesicles of rat. Their pro-oxidative effect was also confirmed concomitantly to a decrease in anti-oxidant defenses in the blood, the testicles, and the liver. Thus, it seemed very logic to evaluate damages in the reproductive organs, especially on the exocrine and endocrine functions of the testicles. METHODS Aluminum and indium were intraperitoneally administered to male Wistar rats. Sperm solution was obtained from cauda epididymides. Motility, viability, density, and malformation of spermatozoa solution were assessed. Serum total unconjugated testosterone concentrations were measured using RIA technique. RESULTS Our results showed a decrease in weight of the testicles, epididymides, and seminal vesicles of indium-treated rats and an increase in the weight of their kidneys. A decrease in motility, viability, and density of epididymides stored sperm as well as generation of many spermatozoa malformations was also observed especially in indium-treated rats. Testosterone levels were increased in indium but were enhanced in aluminum group. This confirmed our previous studies showing that aluminum and indium are toxic for the testicular tissues. This could be explained by the generation of reactive oxygen species (ROS) affecting strongly the exocrine and the endocrine functions of the testicles. CONCLUSION Aluminum and indium are disturbing elements for the exocrine and endocrine functions of rat testicles.
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Affiliation(s)
- Samira Maghraoui
- Laboratory of Physiology, Faculty of Medicine of Tunis (University of Tunis El Manar), 15, Djebel Lakhdar Street, La Rabta, 1007, Tunis, Tunisia.
| | - Adrian Florea
- Department of Cell and Molecular Biology, "Iuliu Haţieganu" University of Medicine and Pharmacy, 6 L. Pasteur St, 400349, Cluj-Napoca, Romania
| | - Ahlem Ayadi
- Research Unit: Valorization of Active Molecules, Higher Institute of Applied Biology Medenine (University of Gabes), El Jorf Road - Km 22.5-4119, Medenine, Tunisia
| | - Horea Matei
- Department of Cell and Molecular Biology, "Iuliu Haţieganu" University of Medicine and Pharmacy, 6 L. Pasteur St, 400349, Cluj-Napoca, Romania
- Laboratory of Complementary Investigations, Institute of Legal Medicine, 3-5 Clinicilor St, 400006, Cluj-Napoca, Romania
| | - Leila Tekaya
- Laboratory of Physiology, Faculty of Medicine of Tunis (University of Tunis El Manar), 15, Djebel Lakhdar Street, La Rabta, 1007, Tunis, Tunisia
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18
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Lyu M, Liu J, Xu X, Liu C, Qin H, Zhang X, Tian G, Jiang H, Jiang Y, Zhu Z, Ge S. Magnesium alleviates aluminum-induced growth inhibition by enhancing antioxidant enzyme activity and carbon-nitrogen metabolism in apple seedlings. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114421. [PMID: 36529044 DOI: 10.1016/j.ecoenv.2022.114421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 12/07/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
Previous studies have determined that magnesium (Mg) in appropriate concentrations prevents plants from suffering from abiotic stress. To better understand the mechanism of Mg alleviation of aluminum (Al) stress in apple, we investigated the effect of Mg on plant growth, photosynthetic fluorescence, antioxidant system, and carbon (C) and nitrogen (N) metabolism of apple seedlings under Al toxicity (1.5 mmol/L) via a hydroponic experiment. Al stress induced the production of reactive oxygen in the leaves and roots and reduced the total dry weight (DW) by 52.37 % after 20 days of treatment relative to plants grown without Al, due to hindered photosynthesis and alterations in C and N metabolism. By contrast, total DW decreased by only 11.07 % in the Mg-treated plants under Al stress. Supplementation with 3.0 mmol/L Mg in the Al treatment decreased Al accumulation in the apple plants and reduced Al-induced oxidative damage by enhancing the activity of antioxidant enzymes (superoxide dismutase, catalase, and peroxidase) and reducing the production of H2O2 and malondialdehyde (MDA). Under Al stress, the Mg-treated plants showed a 46.17 % higher photosynthetic rate than the non-treated plants. Supplementation with Mg significantly increased the sucrose content by increasing sucrose synthase (SS) and sucrose-phosphate synthase (SPS) activities. Moreover, Mg facilitated the transport of 13C-carbohydrates from the leaves to roots. Regarding N metabolism, the nitrate reductase (NR), glutamine synthase (GS), and glutamate synthase (GOGAT) activities in the roots and leaves of the Mg-treated plants were significantly higher than those of the non-treated plants under Al stress. Compared with the non-treated plants under Al stress, the Mg-treated plants exhibited a significantly high level of NO3- and soluble protein content in the leaves, roots, and stems, but a low level of free amino acids. Furthermore, Mg significantly improved nitrogen accumulation and enhanced the transport of 15N from the roots to leaves. Overall, our results revealed that Mg alleviates Al-induced growth inhibition by enhancing antioxidant capacity and C-N metabolism in apple seedlings.
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Affiliation(s)
- Mengxue Lyu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Jingquan Liu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Xinxiang Xu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Chunling Liu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Hanhan Qin
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Xuelin Zhang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Ge Tian
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Han Jiang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Yuanmao Jiang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.
| | - Zhanling Zhu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.
| | - Shunfeng Ge
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China.
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Liu H, Zhu R, Shu K, Lv W, Wang S, Wang C. Aluminum stress signaling, response, and adaptive mechanisms in plants. PLANT SIGNALING & BEHAVIOR 2022; 17:2057060. [PMID: 35467484 PMCID: PMC9045826 DOI: 10.1080/15592324.2022.2057060] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 05/27/2023]
Abstract
Over 40% of arable land in the world is acidic. Al stress has become a global agricultural problem affecting plant growth and limiting crop production in acidic soils. Plants have evolved different regulatory mechanisms of adaptation to exogenous environmental challenges, such as Al stress, by altering their growth patterns. In the past decades, several key genes involved in plant response to Al stress and the mechanism of Al detoxification have been revealed. However, the signaling pathways of plant response to Al stress and the regulatory mechanism of plant Al tolerance remain poorly understood. In this review, we summarized the findings of recent studies on the plant Al tolerance mechanism and the molecular regulation mechanism of phytohormones in response to Al stress. This review improves our understanding of the regulatory mechanisms of plants in response to Al stress and provides a reference for the breeding of Al-tolerant crops.
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Affiliation(s)
- Huabin Liu
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, China
| | - Rong Zhu
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, China
| | - Kai Shu
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Weixiang Lv
- Key Laboratory of Southwest China Wildlife Resources Conservation, China West Normal University, Nanchong, China
| | - Song Wang
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, China
| | - Chengliang Wang
- Anhui Provincial Key Lab. of the Conservation and Exploitation of Biological Resources, School of Life Sciences, Anhui Normal University, Wuhu, China
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20
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Firdaus Z, Kumar D, Singh SK, Singh TD. Centella asiatica Alleviates AlCl 3-induced Cognitive Impairment, Oxidative Stress, and Neurodegeneration by Modulating Cholinergic Activity and Oxidative Burden in Rat Brain. Biol Trace Elem Res 2022; 200:5115-5126. [PMID: 34984596 DOI: 10.1007/s12011-021-03083-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/23/2021] [Indexed: 11/02/2022]
Abstract
Aluminum (Al) is linked to the development of many neurological disorders such as Alzheimer's disease (AD), Parkinson's disease, and autism. Centella asiatica (CA) is a regenerating herb traditionally used to stimulate memory. This study was designed to assess the neuroprotective role of ethanolic extract of CA (CAE) in AlCl3-induced neurological conditions in rats. Adult rats were chronically treated with AlCl3 (100 mg/kg b.w./day) for 60 days to establish the dementia model, and co-administration of CAE was evaluated for its ability to attenuate the toxic effect of AlCl3. CAE was given orally at a dose of 150 and 300 mg/kg b.w./day, for 60 days. The behavioral performances of rats were tested through Y-maze and open field tests. Lipid peroxidation, superoxide dismutase, and catalase activity were evaluated to measure oxidative stress; and acetylcholinesterase (AChE) activity was assessed to evaluate cholinergic dysfunction in the rat brain. H&E staining was used to assess structural abnormalities in the cortex and hippocampus. The result showed that AlCl3 induces cognitive dysfunction (impaired learning and memory, anxiety, diminished locomotor activity), oxidative stress, cholinergic impairment, and histopathological alteration in the rat brain. Co-administration of CAE with AlCl3 markedly protects the brain from AlCl3-induced cognitive dysfunction, oxidative stress, AChE activity, and cytoarchitectural alterations. Furthermore, 15 days CAE treatment after 45 days AlCl3 administration markedly ameliorates the AlCl3-induced neurotoxicity indicating its potential for therapeutic use.
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Affiliation(s)
- Zeba Firdaus
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Devendra Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, BHU, Varanasi, 221005, India
| | - Sushil Kumar Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, BHU, Varanasi, 221005, India
| | - Tryambak Deo Singh
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India.
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21
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Dietary Egg White Hydrolysate Prevents Male Reproductive Dysfunction after Long-Term Exposure to Aluminum in Rats. Metabolites 2022; 12:metabo12121188. [PMID: 36557226 PMCID: PMC9786572 DOI: 10.3390/metabo12121188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/22/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Aluminum (Al) is a non-essential metal omnipresent in human life and is considered an environmental toxicant. Al increases reactive oxygen production and triggers immune responses, contributing to chronic systemic inflammation development. Here, we have tested whether an egg white hydrolysate (EWH) with potential bioactive properties can protect against changes in reproductive function in rats exposed to long-term Al dietary levels at high and low doses. Male Wistar rats received orally: low aluminum level group-AlCl3 at 8.3 mg/kg b.w. for 60 days with or without EWH (1 g/kg/day); high aluminum level group-AlCl3 at 100 mg/kg b.w. for 42 days with or without EWH (1 g/kg/day). The co-administration of EWH prevented the increased Al deposition surrounding the germinative cells, reducing inflammation and oxidative stress in the reproductive organs. Furthermore, the daily supplementation with EWH maintained sperm production and sperm quality similar to those found in control animals, even after Al exposure at a high dietary contamination level. Altogether, our results suggest that EWH could be used as a protective agent against impairment in the reproductive system produced after long-term exposure to Al at low or high human dietary levels.
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22
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Lai X, Yuan Y, Liu M, Xiao Y, Ma L, Guo W, Fang Q, Yang H, Hou J, Yang L, Yang H, He MA, Guo H, Zhang X. Individual and joint associations of co-exposure to multiple plasma metals with telomere length among middle-aged and older Chinese in the Dongfeng-Tongji cohort. ENVIRONMENTAL RESEARCH 2022; 214:114031. [PMID: 35934145 DOI: 10.1016/j.envres.2022.114031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/29/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
Studies on associations of metals with leucocyte telomere length (LTL) were mainly limited to several most common toxic metals and single-metal effect, but the impact of other common metals and especially the overall joint associations and interactions of metal mixture with LTL are largely unknown. We included 15 plasma metals and LTL among 4906 participants from Dongfeng-Tongji cohort. Multivariable linear regression was used to estimate associations of individual metals with LTL. We also applied Bayesian kernel machine regression (BKMR) and quantile g-computation regression (Q-g) to evaluate the overall association and interactions, and identified the major contributors as well as the potential modifications by major characteristics. Multivariable linear regression found vanadium, copper, arsenic, aluminum and nickel were negatively associated with LTL, and a 2-fold change was related to 1.9%-5.1% shorter LTL; while manganese and zinc showed 3.7% and 4.0% longer LTL (all P < 0.05) in multiple-metal models. BKMR confirmed above metals and revealed a linearly inverse joint association between 15 metals and LTL. Q-g regression further indicated each quantile increase in mixture was associated with 5.2% shorter LTL (95% CI: -8.1%, -2.3%). Furthermore, manganese counteracted against aluminum and vanadium respectively (Pint<0.05). In addition, associations of vanadium, aluminum and metal mixture with LTL were more prominent in overweight participants. Our results are among the first to provide a new comprehensive view of metal mixture exposure on LTL attrition in the general population, including identifying the major components, metals interactions and the overall effects.
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Affiliation(s)
- Xuefeng Lai
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| | - Yu Yuan
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Miao Liu
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Yang Xiao
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Lin Ma
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Wenting Guo
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Qin Fang
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Huihua Yang
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Jian Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Liangle Yang
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Handong Yang
- Department of Cardiovascular Diseases, Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, China
| | - Mei-An He
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Huan Guo
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Xiaomin Zhang
- Department of Occupational and Environmental Health, Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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23
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Ghaderi S, Gholipour P, Komaki A, Salehi I, Rashidi K, Esmaeil Khoshnam S, Rashno M. p-Coumaric acid ameliorates cognitive and non-cognitive disturbances in a rat model of Alzheimer’s disease: The role of oxidative stress and inflammation. Int Immunopharmacol 2022; 112:109295. [DOI: 10.1016/j.intimp.2022.109295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/11/2022] [Accepted: 09/25/2022] [Indexed: 11/05/2022]
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Gallic and Hesperidin Ameliorate Electrolyte Imbalances in AlCl3-Induced Nephrotoxicity in Wistar Rats. Biochem Res Int 2022; 2022:6151684. [PMID: 36263197 PMCID: PMC9576448 DOI: 10.1155/2022/6151684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Nephrotoxicity is usually characterized by inefficiency of the kidney, thereby causing disruptions to electrolyte balance and blood acidity. This study aimed to evaluate the effect of hesperidin and gallic acid on serum electrolytes and ion pumps in Wistar rats subjected to aluminum chloride (AlCl3)-induced nephrotoxicity. Thirty Wistar rats were randomly divided into six groups of five animals apiece. Group one served as the negative control and received distilled water while the study lasted. Animals in groups 2–4 received 100 mg/kg/day AlCl3 throughout the study. Animals in groups 3 and 4 were also administered 100 mg/kg/day gallic acid and 100 mg/kg/day hesperidin, respectively. Groups 5 and 6 were treated with 100 mg/kg/day gallic acid only and 100 mg/kg/day hesperidin only, respectively. Treatments were administered orally via gavage for 28 days with distilled water as the vehicle. Animals were sacrificed after which levels of potassium, calcium, magnesium, phosphate, chloride, and bicarbonate ions were evaluated in the serum, while activities of Na+/K+ and Ca2+/Mg2+ ATPases were determined in kidney homogenate. Results showed that AlCl3 significantly (p < 0.05) inhibited activities of Na+/K+ and Ca2+/Mg2+ ATPases in addition to increasing serum levels of potassium, calcium, phosphate, and chloride, with concomitant decrease in serum levels of magnesium and bicarbonate. However, coadministration of AlCl3 with either gallic acid or hesperidin ameliorated all the disruptions caused by AlCl3. It could be concluded that gallic acid and hesperidin could be relevant in managing electrolyte imbalances and acidosis occasioned by kidney dysfunction.
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25
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Abbasnezhad A, Salami F, Mohebbati R. A review: Systematic research approach on toxicity model of liver and kidney in laboratory animals. Animal Model Exp Med 2022; 5:436-444. [PMID: 35918879 PMCID: PMC9610155 DOI: 10.1002/ame2.12230] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 04/13/2022] [Indexed: 11/26/2022] Open
Abstract
Therapeutic experiments are commonly performed on laboratory animals to investigate the possible mechanism(s) of action of toxic agents as well as drugs or substances under consideration. The use of toxins in laboratory animal models, including rats, is intended to cause toxicity. This study aimed to investigate different models of hepatotoxicity and nephrotoxicity in laboratory animals to help researchers advance their research goals. The current narrative review used databases such as Medline, Web of Science, Scopus, and Embase and appropriate keywords until June 2021. Nephrotoxicity and hepatotoxicity models derived from some toxic agents such as cisplatin, acetaminophen, doxorubicin, some anticancer drugs, and other materials through various signaling pathways are investigated. To understand the models of renal or hepatotoxicity in laboratory animals, we have provided a list of toxic agents and their toxicity procedures in this review.
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Affiliation(s)
- Abbasali Abbasnezhad
- Department of Physiology, Faculty of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Fatemeh Salami
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Mohebbati
- Department of Physiology, Faculty of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran.,Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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26
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Thá EL, Gagosian VSC, Canavez ADPM, Schuck DC, Brohem CA, Gradia DF, de Freitas RA, Prado KB, Cestari MM, Lorencini M, Leme DM. In vitro evaluation of the inhalation toxicity of the cosmetic ingredient aluminum chlorohydrate. J Appl Toxicol 2022; 42:2016-2029. [PMID: 35883269 DOI: 10.1002/jat.4371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 11/08/2022]
Abstract
Aluminum chlorohydrate (ACH) is a major aerosol component frequently used as the active ingredient in antiperspirants, and in vivo studies have raised a concern about its inhalation toxicity. Still, few studies have addressed its effects on the human respiratory tract. Therefore, we developed a study on ACH inhalation toxicity using an in vitro human alveolar cell model (A549 cells) with molecular and cellular markers of oxidative stress, immunotoxicity, and epigenetic changes. The chemical characterization of ACH suspensions indicated particle instability and aggregation; however, side-scatter analysis demonstrated significant particle uptake in cells exposed to ACH. Exposure of A549 cells to non-cytotoxic concentrations of ACH (0.25, 0.5, and 1 mg/ml) showed that ACH induced reactive oxygen species. Moreover, ACH upregulated TNF, IL6, IL8, and IL1A genes, but not the lncRNAs NEAT1 and MALAT1. Finally, no alterations on the global DNA methylation pattern (5-methylcytosine and 5-hydroxymethylcytosine) or the phosphorylation of histone H2AX (γ-H2AX) were observed. Our data suggest that ACH may induce oxidative stress and inflammation on alveolar cells, and A549 cells may be useful to identify cellular and molecular events that may be associated with adverse effects on the lungs. Still, further research is needed to ensure the inhalation safety of ACH.
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Affiliation(s)
- Emanoela Lundgren Thá
- Graduate Program in Genetics, Department of Genetics-Federal University of Paraná (UFPR), Curitiba, Brazil
| | | | | | | | - Carla Abdo Brohem
- Product Safety Management-Q&PP, Grupo Boticário, São José dos Pinhais, Brazil
| | | | | | - Karin Braun Prado
- Department of Genetics, Federal University of Paraná (UFPR), Curitiba, Brazil
| | | | - Márcio Lorencini
- Product Safety Management-Q&PP, Grupo Boticário, São José dos Pinhais, Brazil
| | - Daniela Morais Leme
- Department of Genetics, Federal University of Paraná (UFPR), Curitiba, Brazil
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27
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Zarnke A, Oliver C, Dorman S. McIntyre Powder and its potential contributions to cardiovascular disease risk: A literature review through the McIntyre Powder historical lens. Am J Ind Med 2022; 65:813-821. [PMID: 35863903 PMCID: PMC9541914 DOI: 10.1002/ajim.23415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 11/13/2022]
Abstract
McIntyre Powder (MP) is a fine aluminum powder that was developed to prevent silicosis in gold and uranium mine workers in Ontario, Canada, and was administered to miners there from 1943 to 1979. Mine workers were exposed to high concentrations (35.6 mg/m3) of MP for approximately 10 min before every work shift. Contemporary physical and chemical characterizations of this powder have revealed that 12% of the powder is in the ultrafine particle size‐range (nanoparticles); and the remaining 88%, in the fine particulate size range (below 2.5 µm in diameter). The confluence of ultrafine particulate (UFP) composition and high airborne concentration of MP would be expected to overwhelm the defense mechanisms of the lung and increase the lung dust burden of the mine worker exposed to respirable dust in the mine. Published studies revealing associations between air pollution particulates and increased risk for cardiovascular disease (CVD) shown a dose–response relationship with ambient PM2.5 and UFP and suggest that miners exposed to MP may also be at increased risk of CVD. The historical perspective of the use of MP in northern Ontario hard‐rock mines and its potential implications for CVD in exposed mine workers are discussed.
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Affiliation(s)
- Andrew Zarnke
- Laurentian University, Sudbury, Ontario, Canada.,The Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada.,The Centre for Research in Occupational Safety and Health (CROSH), Laurentian University, Sudbury, Ontario, Canada
| | - Christine Oliver
- The Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada.,Dalla Lana School of Public Health, Division of Occupational and Environmental Health, University of Toronto, Toronto, Ontario, Canada
| | - Sandra Dorman
- Laurentian University, Sudbury, Ontario, Canada.,The Centre for Research in Occupational Safety and Health (CROSH), Laurentian University, Sudbury, Ontario, Canada
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28
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Makhdoomi S, Mahboobian MM, Haddadi R, Komaki A, Mohammadi M. Silibinin-loaded nanostructured lipid carriers (NLCs) ameliorated cognitive deficits and oxidative damages in aluminum chloride-induced neurotoxicity in male mice. Toxicology 2022; 477:153260. [PMID: 35850386 DOI: 10.1016/j.tox.2022.153260] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/09/2022] [Accepted: 07/14/2022] [Indexed: 10/17/2022]
Abstract
Aluminum chloride (AlCl3) and its accumulation in the brain are associated with neurodegenerative disease. Recent investigations have illustrated that silibinin is known to have neuroprotective properties. The present study investigates the neuroprotective effects of silibinin-loaded nanostructured lipid carriers (Sili-NLCs) against AlCl3-induced neurotoxicity in male mice. Sili-NLCs were prepared using the emulsification-solvent evaporation method and subjected to particle size, zeta potential, and entrapment efficiency (% EE) analysis. Mice were treated with AlCl3 (100 mg/kg/day, p.o.) and with the same concentration of silibinin and Sili-NLCs (50,100, and 200 mg/kg/day, p.o.) for 30 days in different groups. After treating animals, behavioral studies were assessed. Also, the brain tissue samples were collected from all mice to evaluate oxidative damage and histological changes. The particle size, polydispersity index, zeta potential, and entrapment efficiency (% EE) of prepared Sili-NLCs found 239.7 ± 4.04 nm, 0.082 ± 0.003, - 16.33 ± 0.15 mV, and 72.65 ± 2.03 %, respectively. Brain uptake studies showed that Sili-NLCs had a 5.7-fold greater uptake in the mice brain than the free drug. The AlCl3 caused significant cognitive impairment and increased the level of lipid peroxidation accompanied by decreasing antioxidant enzyme activity in the brain tissue. These findings correlated well with the histopathological experiments. Furthermore, treatment with Sili-NLCs significantly improved the AlCl3-induced cognitive impairment, neurochemical anomalies, and histopathological changes. Given these results, silibinin, when delivered using NLCs, is potentially more effective than free silibinin in decreasing AlCl3- induced neurotoxicity.
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Affiliation(s)
- Sajjad Makhdoomi
- Department of Pharmacology & Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Mehdi Mahboobian
- Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rasool Haddadi
- Department of Pharmacology and Toxicology, School of Pharmacy, Herbal Medicine and natural product Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Alireza Komaki
- Department of Physiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mojdeh Mohammadi
- Department of Pharmacology & Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.
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29
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The antiplatelet activity of Camel milk in healthy and aluminum chloride-intoxicated rats. Saudi J Biol Sci 2022; 29:103369. [PMID: 35855769 PMCID: PMC9287608 DOI: 10.1016/j.sjbs.2022.103369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 05/29/2022] [Accepted: 06/27/2022] [Indexed: 12/02/2022] Open
Abstract
This study examined the effect of camel milk on some marker of blood coagulation markers in aluminum chloride (ALCl3)-treated rats. Rats (n = 6) were assigned as control, control + fresh camel milk (1 ml), ALCl3 (0.5 mg/kg), and ALCl3 + fresh camel milk (1 ml and 0.5 mg/kg, respectively). Treatments were conducted orally for 30 days and daily. Administration of camel milk to control and ALCl3-intoxicated rats significantly increased platelet count, bleeding time, and collagen epinephrine (CEPI)-induced platelet aggregation. It also lowered plasma levels of thromboxane B2 and hepatic levels of glutathione (GSH) and the activities of antioxidant enzymes, catalase (CAT) and superoxide dismutase (SOD). While the treatment with camel milk has no effect on the liver structure, values of activated partial prothrombin time (aPPT), and levels of prothrombin time (PT) in control rats, it improved liver architectures and decreased serum levels alanine and aspartate aminotransferases (ALT and AST, respectively), and reduced values of both aPTT and PT in ALCl3-intoxicated rats. In conclusion, camel milk inhibits platelets activity and aggregation in both control and ALCl3-intoxicated rats.
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A Computational Study of the Role of Secondary Metabolites for Mitigation of Acid Soil Stress in Cereals Using Dehydroascorbate and Mono-Dehydroascorbate Reductases. Antioxidants (Basel) 2022; 11:antiox11030458. [PMID: 35326108 PMCID: PMC8944642 DOI: 10.3390/antiox11030458] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/09/2022] [Accepted: 02/18/2022] [Indexed: 11/30/2022] Open
Abstract
The present study investigates the potential ameliorative role of seven secondary metabolites, viz., ascorbate (AsA), reduced glutathione (GSH), jasmonic acid (JA), salicylic acid (SA), serotonin (5-HT), indole–3–acetic acid (IAA) and gibberellic acid (GA3), for mitigation of aluminium (Al3+) and manganese (Mn2+) stress associated with acidic soils in rice, maize and wheat. The dehydroascorbate reductase (DHAR) and mono-dehydroascorbate reductase (MDHAR) of the cereals were used as model targets, and the analysis was performed using computational tools. Molecular docking approach was employed to evaluate the interaction of these ions (Al3+ and Mn2+) and the metabolites at the active sites of the two target enzymes. The results indicate that the ions potentially interact with the active sites of these enzymes and conceivably influence the AsA–GSH cycle. The metabolites showed strong interactions at the active sites of the enzymes. When the electrostatic surfaces of the metabolites and the ions were generated, it revealed that the surfaces overlap in the case of DHAR of rice and wheat, and MDHAR of rice. Thus, it was hypothesized that the metabolites may prevent the interaction of ions with the enzymes. This is an interesting approach to decipher the mechanism of action of secondary metabolites against the metal or metalloid - induced stress responses in cereals by aiming at specific targets. The findings of the present study are reasonably significant and may be the beginning of an interesting and useful approach towards comprehending the role of secondary metabolites for stress amelioration and mitigation in cereals grown under acidic soil conditions.
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31
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Serum Indicators of Oxidative Damage from Embedded Metal Fragments in a Rat Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5394303. [PMID: 35154566 PMCID: PMC8828353 DOI: 10.1155/2022/5394303] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/04/2021] [Accepted: 01/04/2022] [Indexed: 11/24/2022]
Abstract
Injuries suffered in armed conflicts often result in embedded metal fragments. Standard surgical guidance recommends leaving embedded fragments in place except under certain circumstances in an attempt to avoid the potential morbidity that extensive surgery often brings. However, technological advances in weapon systems and insurgent use of improvised explosive devices now mean that practically any metal can be found in these types of wounds. Unfortunately, in many cases, the long-term toxicological properties of embedded metals are not known, further complicating treatment decisions. Because of concerns over embedded metal fragment injuries, the U.S. Departments of Defense and Veterans' Affairs developed a list of “metals of concern” for these types of injuries. In this study, we selected eight of these metals including tungsten, nickel, cobalt, iron, copper, aluminum, lead, and depleted uranium to investigate the long-term health effects using a rodent model developed in our Institute to study embedded fragment injuries. In this report, we show that metals surgically implanted into the gastrocnemius muscle of laboratory rats to simulate a shrapnel wound induce a variety of cytokines including IFN-γ, IL-4, IL-5, IL-6, IL-10, and IL-13. TNF-α and KC/GRO were not affected, and IL-1β was below the limit of detection. Serum levels of C-reactive protein were also affected, increasing with some metals and decreasing with others. The TBARS assay, an assessment of lipid peroxidation, demonstrated that implanted aluminum and lead increased markers of lipid peroxidation in serum. Taken together, the results suggest that serum cytokine levels, as well as other indicators of oxidative damage, may prove useful in identifying potential adverse health effects of embedded metals.
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32
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Lanuza J, Postils V, Lopez X. Can aluminum, a non-redox metal, alter the thermodynamics of key biological redox processes? The DPPH-QH 2 radical scavenging reaction as a test case. Free Radic Biol Med 2022; 179:200-207. [PMID: 34973365 DOI: 10.1016/j.freeradbiomed.2021.12.308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/07/2021] [Accepted: 12/20/2021] [Indexed: 11/21/2022]
Abstract
The increased bioavailability of aluminum has led to a concern about its toxicity on living systems. Among the most important toxic effects, it has been proven that aluminum increases oxidative stress in biological systems, a controversial fact, however, due to its non-redox nature. In the present work, we characterize in detail how aluminum can alter redox equilibriums by analyzing its effects on the thermodynamics of the redox scavenging reaction between DPPH., a radical compound often used as a reactive oxygen species model, and hydroquinones, a potent natural antioxidant. For the first time, theoretical and experimental redox potentials within aluminum biochemistry are directly compared. Our results fully agree with experimental reduction and oxidation potentials, unequivocally revealing how aluminum alters the spontaneity of the reaction by stabilizing the reduction of DPPH⋅ to DPPH- and promoting a proton transfer to the diazine moiety, leading to the production of a DPPH-H species. The capability of aluminum to modify redox potentials shown here confirms previous experimental findings on the role of aluminum to interfere with free radical scavenging reactions, affecting the natural redox processes of living organisms.
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Affiliation(s)
- Jose Lanuza
- Polimero eta Material Aurreratuak, Kimika eta Teknologia Saila, Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), 20 018, Donostia-San Sebastián, Spain; Donostia International Physics Center (DIPC), 20 018, Donostia-San Sebastián, Spain
| | - Verònica Postils
- Polimero eta Material Aurreratuak, Kimika eta Teknologia Saila, Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), 20 018, Donostia-San Sebastián, Spain; Donostia International Physics Center (DIPC), 20 018, Donostia-San Sebastián, Spain.
| | - Xabier Lopez
- Polimero eta Material Aurreratuak, Kimika eta Teknologia Saila, Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), 20 018, Donostia-San Sebastián, Spain; Donostia International Physics Center (DIPC), 20 018, Donostia-San Sebastián, Spain.
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33
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Hidalgo T, Simón-Vázquez R, González-Fernández A, Horcajada P. Cracking the immune fingerprint of metal-organic frameworks. Chem Sci 2022; 13:934-944. [PMID: 35211258 PMCID: PMC8790785 DOI: 10.1039/d1sc04112f] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 11/02/2021] [Indexed: 12/14/2022] Open
Abstract
The human body is in a never-ending chess game against pathogens. When the immune system, our natural defence tool, is weakened, these organisms are able to escape, overcoming the body's contingency plan, which results in the body going into a pathological state. To overcome this checkmate status, emerging nanomedicines have been successfully employed as one of the best tactics for boosting the immune response, manipulating the body's defence tools for the specific recognition/elimination of pathological cells via the active ingredient delivery. However, the vast majority of these drug-delivery systems (DDS) are considered to be exclusively passive vehicles, with nanoscale metal-organic frameworks (nanoMOFs) attracting a great deal of attention due to their versatility and ability to carry and deliver exceptional drug payloads and to modulate their biological bypass. Nonetheless, their intrinsic immunogenicity character has been never addressed. Considering the immense possibilities that nanoMOFs offer as a treatment platform, the present study aimed to unveil the immunological fingerprint of MOFs, including an in-deep evaluation of the cellular oxidation balance, the inflammation and recruitment of immune cells and the precise Th1/Th2 cytokine profile that is triggered. This study aims to gain insights that will make more feasible the design of customized immune-active MOF nanoplatforms according to targeted diseases, as the next ace up immune system sleeve.
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Affiliation(s)
- T Hidalgo
- Advanced Porous Materials Unit (APMU), IMDEA Energy Institute Av. Ramón de la Sagra 3 28935 Móstoles-Madrid Spain
- Institut Lavoisier, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines 45 Av. des Etats-Unis 78035 Versailles Cedex France
| | - R Simón-Vázquez
- CINBIO, Immunology Group, Universidade de Vigo 36310 Vigo Spain
- Instituto de Investigación Sanitaria Galicia Sur (IIS Galicia Sur), SERGAS-UVIGO Spain
| | - A González-Fernández
- CINBIO, Immunology Group, Universidade de Vigo 36310 Vigo Spain
- Instituto de Investigación Sanitaria Galicia Sur (IIS Galicia Sur), SERGAS-UVIGO Spain
| | - P Horcajada
- Advanced Porous Materials Unit (APMU), IMDEA Energy Institute Av. Ramón de la Sagra 3 28935 Móstoles-Madrid Spain
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El-Shetry ES, Mohamed AAR, Khater SI, Metwally MMM, Nassan MA, Shalaby S, A M El-Mandrawy S, Bin Emran T, M Abdel-Ghany H. Synergistically enhanced apoptotic and oxidative DNA damaging pathways in the rat brain with lead and/or aluminum metals toxicity: Expression pattern of genes OGG1 and P53. J Trace Elem Med Biol 2021; 68:126860. [PMID: 34583094 DOI: 10.1016/j.jtemb.2021.126860] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Lead (Pb) and aluminum (Al) are ubiquitous environmental pollutants and are known to induce neurodegenerative disorders. They enhance neuronal changes and may involve glial alterations and other consequences. We intend to evaluate the mechanism through which the long-term exposure to Pb acetate alone or in combination with aluminum-chloride induced neurological impacts in rats. METHODS For this aim, a total number of forty male Sprague Dawley rats were assigned into four groups. Control (DW), Pb acetate (12.5 mg/kg BW), Al chloride (64 mg/kg BW), and the combination group were experimentally exposed for 60 days. Biochemical evaluation of oxidative stress biomarkers, transcriptional-mediated changes in the expression pattern of OGG1 and P53 genes by qRT-PCR were applied. Histopathological modifications in the brain tissue with immunohistochemical reactivity of GFAP were also detected. RESULTS Our findings revealed that lipid peroxidation was markedly enhanced but inhibited antioxidant enzyme activity in brain tissue in all exposed groups regarding the control. Pb-acetate elevated the biochemical concentration of dopamine and serotonin while AlCl3 declined their levels in the brain homogenate of rats. Furthermore, the exposure to one or both metals elevated the comet assay indices and serum level of 8-hydroxy-2' -deoxyguanosine, up-regulated the expression of P53, OGG1 and GFAP immunoreactivity in the central nervous system. Histologically, they caused several brain tissue alterations. CONCLUSION The exposure to Pb and/or Al could be key candidates for neurodegenerative changes in the brain of rats via oxidative, apoptotic, and DNA damaging pathways. Besides, according to our findings, exposure to both Pb acetate and Aluminium chloride have synergistic damaging effects on the central nervous system of rats. Also, they have opposing effects on the secretion of monoamine neurotransmitters DA and 5 H T.
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Affiliation(s)
- Eman S El-Shetry
- Department of Human Anatomy and Embryology, Faculty of Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Amany Abdel-Rahman Mohamed
- Departments of Forensic Medicine and Toxicology and Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt.
| | - Safaa I Khater
- Department of Biochemistry, Faculty of Veterinary Medicine, Zagazig University, 4511, Egypt
| | - Mohamed M M Metwally
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Mohamed A Nassan
- Department of clinical laboratory sciences, Turabah University College, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Shimaa Shalaby
- Department of Physiology, Faculty of Vet. Medicine, Zagazig University, Zagazig 44511, Egypt
| | - Shefaa A M El-Mandrawy
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
| | - Heba M Abdel-Ghany
- Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
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Arun KB, Madhavan A, Sindhu R, Emmanual S, Binod P, Pugazhendhi A, Sirohi R, Reshmy R, Awasthi MK, Gnansounou E, Pandey A. Probiotics and gut microbiome - Prospects and challenges in remediating heavy metal toxicity. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126676. [PMID: 34329091 DOI: 10.1016/j.jhazmat.2021.126676] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/02/2021] [Accepted: 07/15/2021] [Indexed: 05/26/2023]
Abstract
The gut microbiome, often referred to as "super organ", comprises up to a hundred trillion microorganisms, and the species diversity may vary from person to person. They perform a decisive role in diverse biological functions related to metabolism, immunity and neurological responses. However, the microbiome is sensitive to environmental pollutants, especially heavy metals. There is continuous interaction between heavy metals and the microbiome. Heavy metal exposure retards the growth and changes the structure of the phyla involved in the gut microbiome. Meanwhile, the gut microbiome tries to detoxify the heavy metals by altering the physiological conditions, intestinal permeability, enhancing enzymes for metabolizing heavy metals. This review summarizes the effect of heavy metals in altering the gut microbiome, the mechanism by which gut microbiota detoxifies heavy metals, diseases developed due to heavy metal-induced dysbiosis of the gut microbiome, and the usage of probiotics along with advancements in developing improved recombinant probiotic strains for the remediation of heavy metal toxicity.
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Affiliation(s)
- K B Arun
- Rajiv Gandhi Centre for Biotechnology, Trivandrum 695014, Kerala, India
| | - Aravind Madhavan
- Rajiv Gandhi Centre for Biotechnology, Trivandrum 695014, Kerala, India
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, Kerala, India
| | - Shibitha Emmanual
- Department of Zoology, St. Joseph's College, Thrissur 680121, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, Kerala, India
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan ROC
| | - Ranjna Sirohi
- Department of Chemical & Biological Engineering, Korea University, Seoul 136713, Republic of Korea; Centre for Energy and Environmental Sustainability, Lucknow 226029, Uttar Pradesh, India
| | - R Reshmy
- Post Graduate and Research Department of Chemistry, Bishop Moore College, Mavelikara 690110, Kerala, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, North West A & F University, Yangling, Shaanxi 712100, China
| | - Edgard Gnansounou
- Ecole Polytechnique Federale de Lausanne, ENAC GR-GN, CH-1015 Lausanne, Switzerland
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR, Indian Institute for Toxicology Research, Lucknow 226001, Uttar Pradesh, India; Centre for Energy and Environmental Sustainability, Lucknow 226029, Uttar Pradesh, India.
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Capriello T, Félix LM, Monteiro SM, Santos D, Cofone R, Ferrandino I. Exposure to aluminium causes behavioural alterations and oxidative stress in the brain of adult zebrafish. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 85:103636. [PMID: 33741517 DOI: 10.1016/j.etap.2021.103636] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Aluminium (Al) water pollution is an increasing environmental problem. Accordingly, this study aimed to find out more about its toxic effects on aquatic organisms. Adult zebrafish were exposed to 11 mg/L of Al and the behavioural responses and its correlation with brain oxidative stress, antioxidant-defences, changes in metabolism and neurotransmission were assessed at 10, 15 and 20 days of exposure. The behavioural and locomotory responses, suggest an increase in the anxiety state, especially observed in animals exposed to Al for 15 days. The reactive oxygen species increased in a time-dependent trend, while the oxidative damage varied over exposure time. The activity of antioxidant enzymes, as superoxide dismutase, glutathione peroxidase and glutathione S-transferases, and the metallothioneins levels increased after short-term exposures and tended to decrease or stabilize at longer times. The results contribute to understand the toxic mechanisms activated by Al highlighting correlations like behavioural disorders and oxidative state.
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Affiliation(s)
- Teresa Capriello
- Department of Biology, University of Naples "Federico II", Naples, Italy
| | - Luis M Félix
- Laboratory Animal Science (LAS), Institute for Research and Innovation in Health (i3S), University of Porto (UP), Porto, Portugal; Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Sandra M Monteiro
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Dércia Santos
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Rita Cofone
- Department of Biology, University of Naples "Federico II", Naples, Italy
| | - Ida Ferrandino
- Department of Biology, University of Naples "Federico II", Naples, Italy; BAT Center - Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, Portici, NA, Italy.
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Capriello T, Monteiro SM, Félix LM, Donizetti A, Aliperti V, Ferrandino I. Apoptosis, oxidative stress and genotoxicity in developing zebrafish after aluminium exposure. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 236:105872. [PMID: 34052719 DOI: 10.1016/j.aquatox.2021.105872] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/08/2021] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
Aluminium is a non-essential metal and potentially toxic to organisms whose environmental concentration increases due to pollution. In our previous studies, the behavioral changes induced by aluminium were already shown on zebrafish, a model organism widely used for ecotoxicology screening. To examine in depth the knowledge about the toxicity mechanism induced by this metal, zebrafish embryos, at 6 hpf, have been exposed to 50, 100 and 200 µM of AlCl3 for 72 h. Phenotypic alterations, apoptosis and oxidative stress responses have been assessed by evaluations of antioxidant defence and changes in metabolism at the end of treatment. The mRNA expression level of c-fos, appa and appb as marker genes of neural development and function were analyzed by qPCR for the highest used concentration. The data showed that aluminium significantly affected the development of zebrafish inducing morphological alterations and cell death. The oxidative state of larvae was altered, although the formation of reactive oxygen species and the levels of metallothioneins, and the activity of some antioxidant enzymes, decreased at the maximum concentration tested. In addition, at this concentration, the expression of the evaluated genes increased. The comprehensive information obtained gives a realistic snapshot of the aluminium toxicity and provides new information on the mechanism of action of this metal.
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Affiliation(s)
- Teresa Capriello
- Department of Biology, University of Naples "Federico II", Naples, Italy.
| | - Sandra M Monteiro
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB); Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.
| | - Luis M Félix
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB); Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Laboratory Animal Science (LAS), Institute for Research and Innovation in Health (i3S), University of Porto (UP), Porto, Portugal.
| | - Aldo Donizetti
- Department of Biology, University of Naples "Federico II", Naples, Italy.
| | - Vincenza Aliperti
- Department of Biology, University of Naples "Federico II", Naples, Italy.
| | - Ida Ferrandino
- Department of Biology, University of Naples "Federico II", Naples, Italy; BAT Center - Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, Portici, Italy.
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Abdelmeguid NE, Khalil MIM, Elhabet R, Sultan AS, Salam SA. Combination of docosahexaenoic acid and Ginko biloba extract improves cognitive function and hippocampal tissue damages in a mouse model of Alzheimer's disease. J Chem Neuroanat 2021; 116:101995. [PMID: 34182090 DOI: 10.1016/j.jchemneu.2021.101995] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/26/2021] [Accepted: 06/23/2021] [Indexed: 12/27/2022]
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases characterized by a progressive loss of memory and other cognitive functions among elder people. Nowadays, natural antioxidants have been used to recover the quality of life for those with AD. In this study, we investigated, for the first time, the combined effect of docosahexaenoic acid (DHA) and Ginkgo bilobastandardized extract (EGb761) on AD mice. AD was induced in adult male albino mice with AlCl3 (20 mg/kg b.w, i.g.) and D-galactose (D-gal; 120 mg/kg, i.p.) for 90 days. 30 days after induction, mice were treated with DHA (200 mg/kg b.w., i.g.) and EGb761 (200 mg/kg b.w., i.g.) for two months. Our data revealed that the dual treatment of DHA and EGb761 significantly improved cognitive memory and spatial learning abilities in AD-induced mice. The drug treatments preserved the hippocampal CA3 architecture and restored neuronal ultrastructural alterations. Expression of protein phosphatase 2A (PP2A), the most implicated protein phosphatase in AD neurodegeneration, was highly upregulated in the CA3 hippocampus of AD mice treated with DHA and EGb761. Intriguingly, TNF-α expression was significantly reduced in the same group. In conclusion, our findings proved that the combined effect of DHA and EGb761 tended to be potent against the neurodegenerative effect of AlCl3 and D-gal. The applied treatment enhanced neuronal survival and cognitive functions via upregulation of PP2A and restoration of TNF-α expression.
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Affiliation(s)
- Nabila E Abdelmeguid
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Mahmoud I M Khalil
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt; Department of Biological Sciences, Faculty of Science, Beirut Arab University, Lebanon.
| | - Rasha Elhabet
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Ahmed S Sultan
- Department of Biochemistry, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Sherine Abdel Salam
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt.
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Akinola BK, Olawuyi TS, Ukwenya VO, Daniel LD, Faleye BC. Protective effects of aloe vera gel (aloe baberdensis Miller) on aluminum chloride-induced reproductive toxicity in male Wistar rats. JBRA Assist Reprod 2021; 25:193-201. [PMID: 33507720 PMCID: PMC8083855 DOI: 10.5935/1518-0557.20200082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 10/05/2020] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE This study aims at investigating the protective effects of aloe vera gel on aluminum chloride-induced testicular toxicity of adult Wistar rats. METHODS Twenty male Wistar rats were randomly divided into four groups (A, B, C, and D) with five animals per group. Group A serves as the control group and received distilled water (1ml/Kg). Group B received distilled water (1ml/Kg) with 100mg/kg b.wt of aluminum chloride daily. Group C received 100mg/kg b.wt of aluminum chloride with 600mg/kg b.wt of Aloe vera gel daily. Group D received 100mg/kg b.wt of aluminum chloride with 5mg/kg b.wt of vitamin C daily. The animals were fed on standard laboratory animal diet and water ad libitum. Administration was via oral cannula for four weeks. The rats were slaughtered using cervical dislocation. The testes were harvested for seminal, biochemical and histological analysis. RESULTS The results demonstrate that the administration of aloe vera gel (AVG) is capable of preventing testicular toxicity due to aluminum chloride. Aluminum chloride caused a significant change in the testes and seminal parameters of group B when compared to the control animals. The level of Nitric oxide (NO) increased and the level of Superoxide dismutase (SOD) decreased significantly in rats treated with aluminum chloride. CONCLUSIONS The administration of aloe vera gel showed a preventive response in aluminum-induced testicular toxicity of rats as evidenced by histological and biochemical analysis.
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Jenkinson P. Critical review of the publications on the genotoxicology of aluminium salts: 1990-2018. Mutagenesis 2021; 36:109-127. [PMID: 33609359 DOI: 10.1093/mutage/geab008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/16/2021] [Indexed: 12/15/2022] Open
Abstract
Since the mid-1970s, there have been many reports that purport to implicate aluminium in the aetiology of neurodegenerative disease. After several decades of research, the role of aluminium in such disease remains controversial and is not the subject of this review. However, if aluminium is implicated in such disease then it follows that there must be a toxicological mechanism or mode of action, and many researchers have investigated various potential mechanisms including the involvement of oxidative damage, cytotoxicity and genotoxicity. This paper reviews many of the publications of studies using various salts of aluminium and various genotoxicity end points, both in vitro and in vivo, with a focus on oxidative damage. The conclusion of this review is that the majority, if not all, of the publications that report positive results have serious technical flaws and/or implausible findings and consequently should contribute little or no weight to a weight of evidence (WoE) argument. There are many high-quality, Good Laboratory Practice (GLP)-compliant genotoxicity studies, that follow relevant OECD test guidelines and the European Chemicals Agency (ECHA) integrated mutagenicity testing strategy, on several salts of aluminium; all demonstrate clear negative results for both in vitro and in vivo genotoxicity. In addition, the claim for an oxidative mode of action for aluminium can be shown to be spurious. This review concludes that there are no reliable studies that demonstrate a potential for genotoxicity, or oxidative mode of action, for aluminium.
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Oboh G, Oladun FL, Ademosun AO, Ogunsuyi OB. Anticholinesterase activity and antioxidant properties of Heinsia crinita and Pterocarpus soyauxii in Drosophila melanogaster model. J Ayurveda Integr Med 2021; 12:254-260. [PMID: 33514461 PMCID: PMC8185959 DOI: 10.1016/j.jaim.2020.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 01/01/2023] Open
Abstract
Background Plant alkaloids have become important sources of nutraceuticals owing to their pharmacological importance especially in the management of neurodegenerative diseases such as Alzheimer’s disease. In assessing the therapeutic potentials of plant phytochemicals, the fruit fly (Drosophila melanogaster) has emerged as a very veritable tool and has been largely accepted as an alternative model in biomedical research. Objectives In this study, alkaloid extracts from bush apple (Heinsia crinita (Afzel.) G. Taylor and padauk (Pterocarpus soyauxii Taub.) leaves were assessed on D. melanogaster exposed to aluminum toxicity. Materials and methods Alkaloid extracts were prepared by solvent extraction method. Thereafter, the extracts were evaluated for their in vitro antioxidant properties, Fe2+-chelating abilities and inhibitory effects on drosophila acetylcholinesterase (AChE) activity. The samples were also characterized for their constituent alkaloids via HPLC. Thereafter, effective safe dose of the extracts were determined in D. melanogaster (Harwich strain). Subsequently, flies assaulted with AlCl3 were co-treated with the extracts (8.3 and 16.6 μg/g) for seven days, during which their survival rate was monitored. This was followed by assaying for the activities of AChE, antioxidant enzymes [superoxide dismutase (SOD), catalase and glutathione-S-transferase (GST)]. Also, the flies were assayed for levels of thiobarbituric acid reaction substance (TBARS) and reactive oxygen species (ROS). Results The results revealed that both extracts showed in vitro antioxidant properties with Padauk showing significantly higher antioxidant properties in vitro. However, there was no significant difference in their in vitro AChE inhibition. In vivo, Al-induced toxicity reduced survival rate, elevated AChE, SOD and GST activities, as well as TBARS and ROS levels which were ameliorated by the extracts. It was also revealed that piperine was predominant in PA, while 1-cyclohexen-1-yl-pyrrolidine was predominant in BA. Conclusion Our data suggest that the protective abilities of these extracts against Al-induced toxicity can be primarily associated with their anticholinesterase and metal chelating abilities. Thus, these vegetables can be potential sources of nutraceuticals against aluminum toxicity and associated diseases.
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Affiliation(s)
- Ganiyu Oboh
- Federal University of Technology, Department of Biochemistry, P.M.B. 704, Akure, Nigeria.
| | - Folasade L Oladun
- Federal University of Technology, Department of Biochemistry, P.M.B. 704, Akure, Nigeria
| | - Ayokunle O Ademosun
- Federal University of Technology, Department of Biochemistry, P.M.B. 704, Akure, Nigeria
| | - Opeyemi B Ogunsuyi
- Federal University of Technology, Department of Biochemistry, P.M.B. 704, Akure, Nigeria; Federal University of Technology, Department of Biomedical Technology, P.M.B. 704, Akure, Nigeria
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Neuroprotective Effect of Turmeric Extract in Combination with Its Essential Oil and Enhanced Brain Bioavailability in an Animal Model. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6645720. [PMID: 33575335 PMCID: PMC7857868 DOI: 10.1155/2021/6645720] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/28/2020] [Accepted: 01/17/2021] [Indexed: 01/04/2023]
Abstract
Purpose The study evaluated the neuroprotective effect and pharmacokinetic profile of turmeric extract and their metabolites in the blood and brain in an aluminum-induced neurotoxic animal model. Methods Swiss albino mice received turmeric extract (TE), TE-essential oil combination (TE+EO) at doses of 25 and 50 mg/kg/day orally, vehicle (control), and a positive control group. Neurotoxicity was induced by injecting aluminum chloride (40 mg/kg/day, i.p.), and the effect of the intervention was studied for 45 days. The pharmacokinetic and behavioral biochemical markers of brain function and brain histopathological changes were evaluated. Results The AUC 0-t showed a 30.1 and 54.2 times higher free curcumin concentration in plasma with 25 mg/kg and 50 mg/kg of TE+EO vs. TE, respectively. The concentration of free curcumin in the brain was 11.01 and 13.71-fold higher for 25 mg/kg and 50 mg/kg of TE+EO vs. TE, respectively. Aluminum impairs spatial learning and memory, which was significantly reversed with TE+EO by 28.6% (25 mg/kg) and 39.4% (50 mg/kg). In the elevated plus maze test, 44.8% (25 mg/kg) and 67.1% (50 mg/kg) improvements were observed. A significant reduction in aluminum-induced lipid peroxidation was observed. Also, the levels of glutathione, acetylcholinesterase, and catalase were improved with TE+EO. Damage to the hippocampal pyramidal cells was averted with TE+EO. Conclusion The neuroprotective and antioxidant response confirms the benefits of TE+EO against aluminum-induced neurotoxicity. The presence of free curcumin and its metabolites in the brain and plasma establishes its improved bioavailability and tissue distribution. Therefore, the benefits of TE+EO could be harnessed in neurodegenerative diseases.
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Danielsson R, Eriksson H. Aluminium adjuvants in vaccines - A way to modulate the immune response. Semin Cell Dev Biol 2021; 115:3-9. [PMID: 33423930 DOI: 10.1016/j.semcdb.2020.12.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023]
Abstract
Aluminium salts have been used as adjuvants in vaccines for almost a century, but still no clear understanding of the mechanisms behind the immune stimulating properties of aluminium based adjuvants is recognized. Aluminium adjuvants consist of aggregates and upon administration of a vaccine, the aggregates will be recognized and phagocytosed by sentinel cells such as macrophages or dendritic cells. The adjuvant aggregates will persist intracellularly, maintaining a saturated intracellular concentration of aluminium ions over an extended time. Macrophages and dendritic cells are pivotal cells of the innate immune system, linking the innate and adaptive immune systems, and become inflammatory and antigen-presenting upon activation, thus mediating the initiation of the adaptive immune system. Both types of cell are highly adaptable, and this review will discuss and highlight how the occurrence of intracellular aluminium ions over an extended time may induce the polarization of macrophages into inflammatory and antigen presenting M1 macrophages by affecting the: endosomal pH; formation of reactive oxygen species (ROS); stability of the phagosomal membrane; release of damage associated molecular patterns (DAMPs); and metabolism (metabolic re-programming). This review emphasizes that a persistent intracellular presence of aluminium ions over an extended time has the potential to affect the functionality of sentinel cells of the innate immune system, inducing polarization and activation. The immune stimulating properties of aluminium adjuvants is presumably mediated by several discrete events, however, a persistent intracellular presence of aluminium ions appears to be a key factor regarding the immune stimulating properties of aluminium based adjuvants.
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Affiliation(s)
- Ravi Danielsson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, SE-205 06, Malmö, Sweden
| | - Håkan Eriksson
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, SE-205 06, Malmö, Sweden.
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Laabbar W, Abbaoui A, Elgot A, Mokni M, Amri M, Masmoudi-Kouki O, Gamrani H. Aluminum induced oxidative stress, astrogliosis and cell death in rat astrocytes, is prevented by curcumin. J Chem Neuroanat 2020; 112:101915. [PMID: 33370573 DOI: 10.1016/j.jchemneu.2020.101915] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/21/2020] [Accepted: 12/21/2020] [Indexed: 12/12/2022]
Abstract
Aluminum (Al) is recognized potent neurotoxic metal, which causes oxidative stress leading to intracellular accumulation of reactive oxygen species (ROS) and neuronal cell death in various neurodegenerative diseases. Among several medicinal plants with beneficial effects on health, curcumin acts as a multi-functional drug with antioxidant activity. Thus, the purpose of the present study was to evaluate the protective effect of curcumin against aluminum induced-oxidative stress and astrocytes death, in vitro ad in vivo. Incubation of cultured rat astrocytes with two concentrations of Al (37 μM and 150 μM) for 1 h provoked a dose-dependent reduction of the number of living cells as evaluated by Fluorescein diacetate and lactate dehydrogenase assay. Al-treated cells exhibited a reduction of both superoxide dismutase (SOD) and catalase activities. Pretreatment of astrocytes with curcumin (81 μM) prevented Al-induced cell death. Regarding in vivo study, rats were exposed acutely during three consecutive days to three different doses of Al (25 mg/kg, 50 mg/kg and 100 mg/kg, i.p injection), together with curcumin treatment (30 mg/kg). For the chronic model, animals were exposed to Al (3 g/l) in drinking water from intrauterine age to 4 months ages, plus curcumin treatment (175 mg/kg). Data showed that both acute and chronic Al intoxication induced an obvious astrogliosis within motor cortex and hippocampus, while, such effects were restored by curcumin. We showed herein that Al was highly toxic, induced astrocytes death. Then, curcumin protected astrocytes against Al-toxicity. The cytoprotective potential of curcumin is initiated by stimulation of endogenous antioxidant system.
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Affiliation(s)
- Wafaa Laabbar
- Neurosciences, Pharmacology and Environment Team, Laboratory of Clinical, Experimental and Environmental Neurosciences, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakech, Morocco; Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco
| | - Abdellatif Abbaoui
- Neurosciences, Pharmacology and Environment Team, Laboratory of Clinical, Experimental and Environmental Neurosciences, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakech, Morocco; Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco
| | - Abdeljalil Elgot
- Epidemiology and Biomedical Sciences Unit, Laboratory of Health Sciences and Technologies, Higher Institute of Health Sciences, Hassan First University of Settat, Settat, Morocco
| | - Meherzia Mokni
- University Tunis El Manar, Faculty of Science of Tunis, UR/11ES09 Laboratory of Functional Neurophysiology and Pathology, 2092 Tunis, Tunisia
| | - Mohamed Amri
- University Tunis El Manar, Faculty of Science of Tunis, UR/11ES09 Laboratory of Functional Neurophysiology and Pathology, 2092 Tunis, Tunisia.
| | - Olfa Masmoudi-Kouki
- University Tunis El Manar, Faculty of Science of Tunis, UR/11ES09 Laboratory of Functional Neurophysiology and Pathology, 2092 Tunis, Tunisia
| | - Halima Gamrani
- Neurosciences, Pharmacology and Environment Team, Laboratory of Clinical, Experimental and Environmental Neurosciences, Faculty of Medicine and Pharmacy, Cadi Ayyad University, Marrakech, Morocco; Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco.
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Catechin Photolysis Suppression by Aluminum Chloride under Alkaline Conditions and Assessment with Liquid Chromatography-Mass Spectrometry. Molecules 2020; 25:molecules25245985. [PMID: 33348758 PMCID: PMC7766431 DOI: 10.3390/molecules25245985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/08/2020] [Accepted: 12/14/2020] [Indexed: 11/17/2022] Open
Abstract
Tea is rich in catechins and aluminum. In this study, the process of catechin photolysis was applied as a model for examining the effects of aluminum chloride (AlCl3) on the structural changes of catechin and the alteration of aluminum complexes under blue light irradiation (BLI) at pH 8 using liquid chromatography and mass spectrometry techniques. Additionally, the effects of anions on catechin upon the addition of AlCl3 and treatment with BLI were also studied. In this study, when 1 mM catechin was treated with BLI, a superoxide anion radical (O2•-) was generated in an air-saturated aqueous solution, in addition to forming a dimeric catechin (proanthocyanidin) via a photon-induced redox reaction. The relative percentage of catechin was found to be 59.0 and 95.7 for catechin treated with BLI and catechin upon the addition of 1 mM AlCl3 treated with BLI, respectively. It suggested that catechin treated with BLI could be suppressed by AlCl3, while AlCl3 did not form a complex with catechin in the photolytic system. However, under the same conditions, it was also found that the addition of AlCl3 inhibited the photolytic formation of O2•-, and reduced the generation of proanthocyanidin, suggesting that the disconnection of proanthocyanidin was achieved by AlCl3 acting as a catalyst under treatment with BLI. The influence of 1 mM fluoride (F-) and 1 mM oxalate (C2O42-) ions on the photolysis of 1 mM catechin upon the addition of 1 mM AlCl3 and treatment with BLI was found to be insignificant, implying that, during the photolysis of catechin, the Al species were either neutral or negatively charged and the aluminum species did not form a complex with anions in the photolytic system. Therefore, aluminum, which is an amphoteric species, has an inherent potential to stabilize the photolysis of catechin in an alkaline conditions, while suppressing the O2•- and proanthocyanidin generation via aluminum ion catalysis in the catechin/Al system under treatment with BLI.
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Fernandes RM, Corrêa MG, Aragão WAB, Nascimento PC, Cartágenes SC, Rodrigues CA, Sarmiento LF, Monteiro MC, Maia CDSF, Crespo-López ME, Lima RR. Preclinical evidences of aluminum-induced neurotoxicity in hippocampus and pre-frontal cortex of rats exposed to low doses. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 206:111139. [PMID: 32861963 DOI: 10.1016/j.ecoenv.2020.111139] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/02/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Aluminum (Al) is a neurotoxicant agent implicated in several behavioral, neuropathological and neurochemical changes associated with cognitive impairments. Nevertheless, mechanisms of damage and safety concentrations are still very discussed. Thus, the main purpose of this study was to investigate whether two aluminum low doses were able to produce deleterious effects on cognition of adult rats, including oxidative stress in hippocampus and prefrontal cortex, two important areas for cognition. For this, thirty adult Wistar rats were divided into three groups: Al1 (8.3 mg/kg/day), Al2 (32 mg/kg/day) and Control (Ultrapure Water), in which all three groups received their solutions containing or not AlCl3 by intragastric gavage for 60 days. After the experimental period, the short- and long-term memories were assessed by the object recognition test and step-down inhibitory avoidance. After euthanizing, prefrontal cortex and hippocampus samples were dissected for Al levels measurement and evaluation of oxidative biochemistry. Only Al2 increased Al levels in hippocampal parenchyma significantly; both concentrations did not impair short-term memory, while long-term memory was affected in Al1 and Al2. In addition, oxidative stress was observed in prefrontal and hippocampus in Al1 and Al2. Our results indicate that, in a translational perspective, humans are subjected to deleterious effects of Al over cognition even when exposed to low concentrations, by triggering oxidative stress and poor long-term memory performance.
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Affiliation(s)
- Rafael Monteiro Fernandes
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Márcio Gonçalves Corrêa
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Walessa Alana Bragança Aragão
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Priscila Cunha Nascimento
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Sabrina C Cartágenes
- Laboratory of Pharmacology of Inflammation and Behavior, Institute of Health Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Caroline Azulay Rodrigues
- Laboratory of Microbiology and Immunology of Teaching and Research, Pharmacy Faculty, Institute of Health Science, Federal University of Pará, Belém, PA, Brazil
| | - Luis Felipe Sarmiento
- Laboratory of Neuroscience and Behavior, Federal University of Pará, Belém-Pará, Brazil
| | - Marta Chagas Monteiro
- Laboratory of Microbiology and Immunology of Teaching and Research, Pharmacy Faculty, Institute of Health Science, Federal University of Pará, Belém, PA, Brazil
| | - Cristiane do Socorro Ferraz Maia
- Laboratory of Pharmacology of Inflammation and Behavior, Institute of Health Sciences, Federal University of Pará, Belém, PA, Brazil
| | | | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil.
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El-Demerdash FM, Baghdadi HH, Ghanem NF, Mhanna ABA. Nephroprotective role of bromelain against oxidative injury induced by aluminium in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 80:103509. [PMID: 33010469 DOI: 10.1016/j.etap.2020.103509] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/31/2020] [Accepted: 09/28/2020] [Indexed: 06/11/2023]
Abstract
The present study was designed to investigate the nephroprotective effect of bromelain against oxidative stress stimulated by aluminium chloride in rats. Rats were grouped as follows; group one was used as control while groups 2, 3 and 4 were treated orally with bromelain (250 mg/kg, daily), aluminium chloride (AlCl3; 34 mg/kg BW, every other day) and bromelain plus AlCl3 for 30 days, respectively. Administration of AlCl3 caused a significant reduction in rats' body and kidney weights, and increased Al accumulation in kidney tissue. Also, AlCl3 treatment elevated thiobarbituric acid reactive substances, hydrogen peroxide, kidney functions biomarkers levels and lactate dehydrogenase activity. While enzymatic (SOD, CAT, GPx, GR, GST) and non-enzymatic (GSH) antioxidants, protein content, and alkaline phosphatase activity were significantly decreased. In addition, significant alterations in lipid and protein profiles were detected. Furthermore, histopathological and immunohistochemical variations were seen in kidney sections supporting the obtained biochemical changes. Otherwise, rats supplemented with bromelain singly declined lipid peroxidation and improved most of the studied parameters. Moreover, rats pretreated with bromelain followed by AlCl3 intoxication showed significant alleviation in lipid peroxidation, antioxidant status and biochemical indices with respect to AlCl3 treated group. Conclusively, bromelain has beneficial protective effects and has the capability to counteract the toxic influence of AlCl3. So, bromelain might represent a novel approach in the therapy of metal toxicity because of its antioxidant and chelating properties.
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Affiliation(s)
- Fatma M El-Demerdash
- Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt.
| | - Hoda H Baghdadi
- Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt.
| | - Nora F Ghanem
- Department of Zoology, Faculty of Science, Kafr ElSheikh University, Kafr ElSheikh, Egypt.
| | - Ansam B Al Mhanna
- Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt.
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Grande-Aztatzi R, Formoso E, Mujika JI, de Sancho D, Lopez X. Theoretical characterization of Al(III) binding to KSPVPKSPVEEKG: Insights into the propensity of aluminum to interact with key sequences for neurofilament formation. J Inorg Biochem 2020; 210:111169. [PMID: 32679460 DOI: 10.1016/j.jinorgbio.2020.111169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/17/2020] [Accepted: 06/24/2020] [Indexed: 11/15/2022]
Abstract
Classical molecular dynamic simulations and density functional theory are used to unveil the interaction of aluminum with various phosphorylated derivatives of the fragment KSPVPKSPVEEKG (NF13), a major multiphosphorylation domain of human neurofilament medium (NFM). Our calculations reveal the rich coordination chemistry of the resultant structures with a clear tendency of aluminum to form multidentate structures, acting as a bridging agent between different sidechains and altering the local secondary structure around the binding site. Our evaluation of binding energies allows us to determine that phosphorylation has an increase in the affinity of these peptides towards aluminum, although the interaction is not as strong as well-known chelators of aluminum in biological systems. Finally, the presence of hydroxides in the first solvation layer has a clear damping effect on the binding affinities. Our results help in elucidating the potential structures than can be formed between this exogenous neurotoxic metal and key sequences for the formation of neurofilament tangles, which are behind of some of the most important degenerative diseases.
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Affiliation(s)
| | - Elena Formoso
- Donostia International Physics Center (DIPC), 20018 Donostia, Euskadi, Spain; Farmazia Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), 01006 Vitoria-Gasteiz, Euskadi, Spain
| | - Jon I Mujika
- Donostia International Physics Center (DIPC), 20018 Donostia, Euskadi, Spain
| | - David de Sancho
- Donostia International Physics Center (DIPC), 20018 Donostia, Euskadi, Spain; Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), P.K. 1072, 20080 Donostia, Euskadi, Spain
| | - Xabier Lopez
- Donostia International Physics Center (DIPC), 20018 Donostia, Euskadi, Spain; Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), P.K. 1072, 20080 Donostia, Euskadi, Spain.
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Cheng D, Wang G, Wang X, Tang J, Yu Q, Zhang X, Wang S. Neuro-protection of Chlorogenic acid against Al-induced apoptosis in PC12 cells via modulation of Al metabolism and Akt/GSK-3β pathway. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103984] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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