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Gu J, Guo C, Ruan J, Li K, Zhou Y, Gong X, Shi H. From ferroptosis to cuproptosis, and calcicoptosis, to find more novel metals-mediated distinct form of regulated cell death. Apoptosis 2024; 29:586-604. [PMID: 38324163 DOI: 10.1007/s10495-023-01927-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2023] [Indexed: 02/08/2024]
Abstract
Regulated cell death (RCD), also known as programmed cell death (PCD), plays a critical role in various biological processes, such as tissue injury/repair, development, and homeostasis. Dysregulation of RCD pathways can lead to the development of many human diseases, such as cancer, neurodegenerative disorders, and cardiovascular diseases. Maintaining proper metal ion homeostasis is critical for human health. However, imbalances in metal levels within cells can result in cytotoxicity and cell death, leading to a variety of diseases and health problems. In recent years, new types of metal overload-induced cell death have been identified, including ferroptosis, cuproptosis, and calcicoptosis. This has prompted us to examine the three defined metal-dependent cell death types, and discuss other metals-induced ferroptosis, cuproptosis, and disrupted Ca2+ homeostasis, as well as the roles of Zn2+ in metals' homeostasis and related RCD. We have reviewed the connection between metals-induced RCD and various diseases, as well as the underlying mechanisms. We believe that further research in this area will lead to the discovery of novel types of metal-dependent RCD, a better understanding of the underlying mechanisms, and the development of new therapeutic strategies for human diseases.
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Affiliation(s)
- Jie Gu
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Chuanzhi Guo
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Jiacheng Ruan
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Kongdong Li
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Yang Zhou
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Xun Gong
- Department of Rheumatology & Immunology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212013, China.
| | - Haifeng Shi
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China.
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Li Q, Feng Y, Wang R, Liu R, Ba Y, Huang H. Recent insights into autophagy and metals/nanoparticles exposure. Toxicol Res 2023; 39:355-372. [PMID: 37398566 PMCID: PMC10313637 DOI: 10.1007/s43188-023-00184-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 03/08/2023] [Accepted: 04/04/2023] [Indexed: 07/04/2023] Open
Abstract
Some anthropogenic pollutants, such as heavy metals and nanoparticles (NPs), are widely distributed and a major threat to environmental safety and public health. In particular, lead (Pb), cadmium (Cd), chromium (Cr), arsenic (As), and mercury (Hg) have systemic toxicity even at extremely low concentrations, so they are listed as priority metals in relation to their significant public health burden. Aluminum (Al) is also toxic to multiple organs and is linked to Alzheimer's disease. As the utilization of many metal nanoparticles (MNPs) gradually gain traction in industrial and medical applications, they are increasingly being investigated to address potential toxicity by impairing certain biological barriers. The dominant toxic mechanism of these metals and MNPs is the induction of oxidative stress, which subsequently triggers lipid peroxidation, protein modification, and DNA damage. Notably, a growing body of research has revealed the linkage between dysregulated autophagy and some diseases, including neurodegenerative diseases and cancers. Among them, some metals or metal mixtures can act as environmental stimuli and disturb basal autophagic activity, which has an underlying adverse health effect. Some studies also revealed that specific autophagy inhibitors or activators could modify the abnormal autophagic flux attributed to continuous exposure to metals. In this review, we have gathered recent data about the contribution of the autophagy/mitophagy mediated toxic effects and focused on the involvement of some key regulatory factors of autophagic signaling during exposure to selected metals, metal mixtures, as well as MNPs in the real world. Besides this, we summarized the potential significance of interactions between autophagy and excessive reactive oxygen species (ROS)-mediated oxidative damage in the regulation of cell survival response to metals/NPs. A critical view is given on the application of autophagy activators/inhibitors to modulate the systematic toxicity of various metals/MNPs.
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Affiliation(s)
- Qiong Li
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Yajing Feng
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Ruike Wang
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Rundong Liu
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Yue Ba
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
| | - Hui Huang
- Department of Environmental Health and Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, 450001 Henan People’s Republic of China
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Mudgal R, Sharma S, Singh S, Ravichandiran V. The neuroprotective effect of ascorbic acid against imidacloprid-induced neurotoxicity and the role of HO-1 in mice. Front Neurol 2023; 14:1130575. [PMID: 37153653 PMCID: PMC10157196 DOI: 10.3389/fneur.2023.1130575] [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: 12/23/2022] [Accepted: 03/06/2023] [Indexed: 05/10/2023] Open
Abstract
Imidacloprid (IMI) is not only a neurotoxic agricultural pesticide but also a possible food contaminant. The aims of this study were to (1) explore the relationship between recurrent IMI administration and neuronal toxicity in mice and (2) evaluate the potential neuroprotective effect of ascorbic acid (AA), a substance with significant free radical scavenger and having property to block the inflammatory pathways. Mice were categorized as naïve controls (administered vehicles for 28 days); the IMI-treatment animal group (administered po 45-mg/kg body weight of IMI per day for 28 days); and the IMI + AA treatment animal group (administered the same IMI dose + 200 mg/kg of AA orally for 28 days). On day 28, memory losses were assessed using the Y-maze and novel target identification behavioral tests. Mice were sacrificed 24 h after the final IMI treatments, as well as hippocampus tissues, were utilized to determine histological assessments, oxidative stress biomarkers, and Heme oxygenase-1 (HO-1) and nuclear factor erythroid 2-related factor 2 (Nrf2) gene expression levels. The findings demonstrated that IMI-treated mice had substantial impairment of spatial and non-spatial memory functions, as well as reduced antioxidant enzyme and acetylcholinesterase activity. The AA neuroprotective action was achieved through the suppression of the HO-1 expression as well as the stimulation of Nrf2 expression in hippocampal tissues. In summary, recurrent IMI exposure causes oxidative stress and neurotoxicity in mice, and the administration of AA significantly reduces the IMI toxicity possibly by the activation of the HO-1/Nrf2 pathway.
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Heydarnia E, Taghian F, Jalali Dehkordi K, Moghadasi M. Regular combined training and vitamins modulated the apoptosis process in diabetic rats: Bioinformatics analysis of heart failure's differential genes expression network correlated with anti-apoptotic process. J Food Biochem 2022; 46:e14291. [PMID: 35780321 DOI: 10.1111/jfbc.14291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 05/09/2022] [Accepted: 05/17/2022] [Indexed: 02/06/2023]
Abstract
The apoptosis process could impose significantly by hyperglycemia. According to in silico language processing and high throughput raw data analysis, we recognized hub molecular mechanisms involved in the pathogenesis of diabetic hearts and suggested a new pharmaceutical approach for declining myocardial programed cell death. Fifty male Sprague-Dawley rats were classified into five groups: healthy rats as control, diabetic rats, diabetic combined resistance/endurance training, diabetic rats which consumed supplementation vitamins E and C, and the combined supplementation and training. Here, we calculated changes in gene expression based on artificial intelligence methods and evaluated gene expression in apoptotic influencing combined training and antioxidants vitamins consumption in heart injured models by streptozotocin via Real-Time PCR. Moreover, we assessed the binding affinity of the 3D structure of small molecules on macromolecule SIRT3 to a new compound pharmaceutical suggesting the decline in cell death program. The computational intelligence surveys revealed that the apoptosis process was a remarkable pathomechanism in the abnormality function of heart tissue in diabetic conditions. Furthermore, we showed that synchronizing antioxidant vitamin consumption and regular combined training could significantly decrease irreversible myocardial cell death in diabetic myocardiopathy. Hence, levels of antiapoptotic mRNA were modified in the combined training/vitamin consumption group compared with other classifications. We found that regular combined exercise and vitamin consumption could reverse the apoptosis process to enhance the survival of cardiac muscle cells in diabetes conditions. PRACTICAL APPLICATIONS: Machine learning and system biology indicated that the apoptosis process is a vital pathomechanism of hyperglycemia-induced heart failure. Sirt3/Fas/Bcl-2/Cycs and Bax, as a critical network of apoptosis, play an essential role in heart failure induced by hyperglycemia. Moreover, Type 2 diabetes and obesity increase the risk of heart failure by increasing high blood sugar levels. We calculated the binding power of the vitamins E and C on SIRT3 protein based on the drug software. In addition, this study assessed that regular combined training and vitamin consumption had an antiapoptotic effect. Also, our data might improve the hyperglycemia state.
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Affiliation(s)
- Elaheh Heydarnia
- Department of Sports Physiology, Faculty of Sports Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Farzaneh Taghian
- Department of Sports Physiology, Faculty of Sports Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Khosro Jalali Dehkordi
- Department of Sports Physiology, Faculty of Sports Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Mehrzad Moghadasi
- Department of Physical Education and Sports Sciences, Shiraz Branch, Islamic Azad University, Shiraz, Iran
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Zhou L, Zhang C, Qiang Y, Huang M, Ren X, Li Y, Shao J, Xu L. Anthocyanin from purple sweet potato attenuates lead-induced reproductive toxicity mediated by JNK signaling pathway in male mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 224:112683. [PMID: 34438266 DOI: 10.1016/j.ecoenv.2021.112683] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/14/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
The present work aimed to explore the protective effect of APSP on Pb-induced reproductive toxicity and possible mechanism. APSP (100 mg/kg) was administered to Pb-intoxicated (0.2% lead acetate) male Kunming mice once daily by oral gavage for 6 weeks. Our results showed that APSP exerted male reproductive protection effects as showed by attenuated Pb-induced testicular injury, improved sperm count and motility, and reduced sperm abnormality rate. APSP also restored Pb-induced decrease in both enzymatic and non-enzymatic antioxidants, and GSH/GSSG ratio, but inhibited lipid peroxidation in serum and testes. Moreover, APSP downregulated Pb-induced Bax mRNA and protein expressions, suppressed activation of caspase-3, upregulated Bcl-2 protein expression, and prevented Pb-induced DNA damage. APSP treatment also interfered with Pb-induced testicular JNK signaling through inhibition of JNK mRNA expression and phosphorylation, resulting in inhibition of c-Jun expression. These effects of APSP were abolished by Pb. In conclusion, APSP represents a potential therapeutic agent for preventing Pb-caused reproductive toxicity, which is attributed to its antioxidant and anti-apoptotic properties, as well as, modulation of JNK signaling pathway.
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Affiliation(s)
- Li Zhou
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China.
| | - Chaoqin Zhang
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China
| | - Yu Qiang
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China
| | - Min Huang
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China
| | - Xiangmei Ren
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China
| | - Yuanhong Li
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China
| | - Jihong Shao
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, China
| | - Lichun Xu
- Department of Hygiene, School of Public Health, Xuzhou Medical University, Xuzhou, China
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Cognitive Impairment Induced by Lead Exposure during Lifespan: Mechanisms of Lead Neurotoxicity. TOXICS 2021; 9:toxics9020023. [PMID: 33525464 PMCID: PMC7912619 DOI: 10.3390/toxics9020023] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/19/2021] [Accepted: 01/25/2021] [Indexed: 12/25/2022]
Abstract
Lead (Pb) is considered a strong environmental toxin with human health repercussions. Due to its widespread use and the number of people potentially exposed to different sources of this heavy metal, Pb intoxication is recognized as a public health problem in many countries. Exposure to Pb can occur through ingestion, inhalation, dermal, and transplacental routes. The magnitude of its effects depends on several toxicity conditions: lead speciation, doses, time, and age of exposure, among others. It has been demonstrated that Pb exposure induces stronger effects during early life. The central nervous system is especially vulnerable to Pb toxicity; Pb exposure is linked to cognitive impairment, executive function alterations, abnormal social behavior, and fine motor control perturbations. This review aims to provide a general view of the cognitive consequences associated with Pb exposure during early life as well as during adulthood. Additionally, it describes the neurotoxic mechanisms associated with cognitive impairment induced by Pb, which include neurochemical, molecular, and morphological changes that jointly could have a synergic effect on the cognitive performance.
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Comunian T, Babazadeh A, Rehman A, Shaddel R, Akbari-Alavijeh S, Boostani S, Jafari S. Protection and controlled release of vitamin C by different micro/nanocarriers. Crit Rev Food Sci Nutr 2020; 62:3301-3322. [DOI: 10.1080/10408398.2020.1865258] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- T. Comunian
- Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, Brazil
| | - A. Babazadeh
- Center for Motor Neuron Disease Research, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - A. Rehman
- State Key Laboratory of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
| | - R. Shaddel
- Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - S. Akbari-Alavijeh
- Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - S. Boostani
- Department of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz, Iran
| | - S.M. Jafari
- Faculty of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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8
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(Ascorb)ing Pb Neurotoxicity in the Developing Brain. Antioxidants (Basel) 2020; 9:antiox9121311. [PMID: 33371438 PMCID: PMC7767447 DOI: 10.3390/antiox9121311] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/21/2022] Open
Abstract
Lead (Pb) neurotoxicity is a major concern, particularly in children. Developmental exposure to Pb can alter neurodevelopmental trajectory and has permanent neuropathological consequences, including an increased vulnerability to further stressors. Ascorbic acid is among most researched antioxidant nutrients and has a special role in maintaining redox homeostasis in physiological and physio-pathological brain states. Furthermore, because of its capacity to chelate metal ions, ascorbic acid may particularly serve as a potent therapeutic agent in Pb poisoning. The present review first discusses the major consequences of Pb exposure in children and then proceeds to present evidence from human and animal studies for ascorbic acid as an efficient ameliorative supplemental nutrient in Pb poisoning, with a particular focus on developmental Pb neurotoxicity. In doing so, it is hoped that there is a revitalization for further research on understanding the brain functions of this essential, safe, and readily available vitamin in physiological states, as well to justify and establish it as an effective neuroprotective and modulatory factor in the pathologies of the nervous system, including developmental neuropathologies.
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Calderón-Vallejo D, Del Carmen Díaz-Galindo M, Quintanar-Stephano A, Olvera-Sandoval C, Quintanar JL. Protective role of ascorbic acid on lead-induced damage to the thyroid gland in the rat. Toxicol Res (Camb) 2020; 9:632-635. [PMID: 33178423 DOI: 10.1093/toxres/tfaa068] [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: 07/27/2020] [Accepted: 08/03/2020] [Indexed: 11/13/2022] Open
Abstract
Lead exposure is known to affect the pituitary-thyroid axis. Likewise, ascorbic acid (AA) has a protective action against lead poisoning. We examine the protective role of AA in lead-induced damage to the thyroid gland. The Wistar rats were divided into three groups: control that received 0.2% AA in drinking water throughout the experiment (15 days), intoxicated with lead acetate (20 mg/kg) intraperitoneally every 48 h for 15 days, and the experimental group treated with lead acetate and 0.2% AA in drinking water throughout the experiment. Plasma thyroid-stimulating hormone, triiodothyronine, thyroxine, and lead were determined. The thyroid gland was weighed, then epithelial cell height and nuclear volume were measured on histological slides. The results show that AA reduced the thyroid atrophy caused by lead acetate, as well as the loss of weight of the gland. In addition, it prevented the decrease of the hormone triiodothyronine, although the thyroxine hormone remained lower than the control values and the thyroid-stimulating hormone remains high. Our results indicated that AA could play a protective role in lead poisoning in the thyroid gland.
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Affiliation(s)
- Denisse Calderón-Vallejo
- Depto. de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Avenida Universidad 940, C.P., 20131 Aguascalientes, Mexico
| | - María Del Carmen Díaz-Galindo
- Depto. de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Avenida Universidad 940, C.P., 20131 Aguascalientes, Mexico
| | - Andrés Quintanar-Stephano
- Depto. de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Avenida Universidad 940, C.P., 20131 Aguascalientes, Mexico
| | - Carlos Olvera-Sandoval
- Facultad de Medicina, Universidad Autónoma de Baja California, Avenida Alvaro Obregon s/n, Nueva, 21100 Mexicali, Mexico
| | - J Luis Quintanar
- Depto. de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Avenida Universidad 940, C.P., 20131 Aguascalientes, Mexico
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Ahmad F, Haque S, Ravinayagam V, Ahmad A, Kamli MR, Barreto GE, Ghulam Md Ashraf. Developmental lead (Pb)-induced deficits in redox and bioenergetic status of cerebellar synapses are ameliorated by ascorbate supplementation. Toxicology 2020; 440:152492. [PMID: 32407874 DOI: 10.1016/j.tox.2020.152492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/08/2020] [Accepted: 05/07/2020] [Indexed: 10/24/2022]
Abstract
Neurotoxicity induced by exposure to heavy metal lead (Pb) is a concern of utmost importance particularly for countries with industrial-based economies. The developing brain is especially sensitive to exposure to even minute quantities of Pb which can alter neurodevelopmental trajectory with irreversible effects on motor, emotive-social and cognitive attributes even into later adulthood. Chemical synapses form the major pathway of inter-neuronal communications and are prime candidates for higher order brain (motor, memory and behavior) functions and determine the resistance/susceptibility for neurological disorders, including neuropsychopathologies. The synaptic pathways and mechanisms underlying Pb-mediated alterations in neuronal signaling and plasticity are not completely understood. Employing a biochemically isolated synaptosomal fraction which is enriched in synaptic terminals and synaptic mitochondria, this study aimed to analyze the alterations in bioenergetic and redox/antioxidant status of cerebellar synapses induced by developmental exposure to Pb (0.2 %). Moreover, we test the efficacy of vitamin C (ascorbate; 500 mg/kg body weight), a neuroprotective and neuromodulatory antioxidant, in mitigation of Pb-induced neuronal deficits. Our results implicate redox and bioenergetic disruptions as an underlying feature of the synaptic dysfunction observed in developmental Pb neurotoxicity, potentially contributing to consequent deficits in motor, behavioral and psychological attributes of the organisms. In addition, we establish ascorbate as a key ingredient for therapeutic approach against Pb induced neurotoxicity, particularly for early-life exposures.
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Affiliation(s)
- Faraz Ahmad
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin 9016, New Zealand.
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Vijaya Ravinayagam
- Deanship of Scientific Research, Department of Nano-medicine Research, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, 31441, Saudi Arabia
| | - Aqeel Ahmad
- Department of Medical Biochemistry, College of Medicine, Shaqra University, Shaqra, 11961, Saudi Arabia
| | - Majid Rasool Kamli
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - George E Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland; Health Research Institute, University of Limerick, Limerick, Ireland
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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11
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Nam SM, Choi JH, Choi SH, Cho HJ, Cho YJ, Rhim H, Kim HC, Cho IH, Kim DG, Nah SY. Ginseng gintonin alleviates neurological symptoms in the G93A-SOD1 transgenic mouse model of amyotrophic lateral sclerosis through lysophosphatidic acid 1 receptor. J Ginseng Res 2020; 45:390-400. [PMID: 34025132 PMCID: PMC8134849 DOI: 10.1016/j.jgr.2020.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 01/11/2023] Open
Abstract
Background We recently showed that gintonin, an active ginseng ingredient, exhibits antibrain neurodegenerative disease effects including multiple target mechanisms such as antioxidative stress and antiinflammation via the lysophosphatidic acid (LPA) receptors. Amyotrophic lateral sclerosis (ALS) is a spinal disease characterized by neurodegenerative changes in motor neurons with subsequent skeletal muscle paralysis and death. However, pathophysiological mechanisms of ALS are still elusive, and therapeutic drugs have not yet been developed. We investigate the putative alleviating effects of gintonin in ALS. Methods The G93A-SOD1 transgenic mouse ALS model was used. Gintonin (50 or 100 mg/kg/day, p.o.) administration started from week seven. We performed histological analyses, immunoblot assays, and behavioral tests. Results Gintonin extended mouse survival and relieved motor dysfunctions. Histological analyses of spinal cords revealed that gintonin increased the survival of motor neurons, expression of brain-derived neurotrophic factors, choline acetyltransferase, NeuN, and Nissl bodies compared with the vehicle control. Gintonin attenuated elevated spinal NAD(P) quinone oxidoreductase 1 expression and decreased oxidative stress-related ferritin, ionized calcium-binding adapter molecule 1-immunoreactive microglia, S100β-immunoreactive astrocyte, and Olig2-immunoreactive oligodendrocytes compared with the control vehicle. Interestingly, we found that the spinal LPA1 receptor level was decreased, whereas gintonin treatment restored decreased LPA1 receptor expression levels in the G93A-SOD1 transgenic mouse, thereby attenuating neurological symptoms and histological deficits. Conclusion Gintonin-mediated symptomatic improvements of ALS might be associated with the attenuations of neuronal loss and oxidative stress via the spinal LPA1 receptor regulations. The present results suggest that the spinal LPA1 receptor is engaged in ALS, and gintonin may be useful for relieving ALS symptoms.
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Affiliation(s)
- Sung Min Nam
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.,Department of Anatomy, School of Medicine and Institute for Environmental Science, Wonkwang University, Iksan, Republic of Korea
| | - Jong Hee Choi
- Department of Science in Korean Medicine, Brain Korea 21 Plus Program, Department of Conversions Medical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Sun-Hye Choi
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hee-Jung Cho
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Yeon-Jin Cho
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hyewhon Rhim
- Center for Neuroscience, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Hyoung-Chun Kim
- Neuropsychopharmacology and Toxicology program, College of Pharmacy, Kangwon National University, Chunchon, Republic of Korea
| | - Ik-Hyun Cho
- Department of Science in Korean Medicine, Brain Korea 21 Plus Program, Department of Conversions Medical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Do-Geun Kim
- Neurovascular Biology Laboratory, Department of Structure and Function of Neural Network, Korea Brain Research Institute, Daegu, Republic of Korea
| | - Seung-Yeol Nah
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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12
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Nam SM, Seo JS, Nahm SS, Chang BJ. Effects of ascorbic acid treatment on developmental alterations in calcium-binding proteins and gamma-aminobutyric acid transporter 1 in the cerebellum of lead-exposed rats during pregnancy and lactation. J Toxicol Sci 2020; 44:799-809. [PMID: 31708536 DOI: 10.2131/jts.44.799] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
In the present study, we investigated the effects of lead (Pb) and ascorbic acid co-administration on rat cerebellar development. Female rats were randomly divided into the following groups: control, Pb, and Pb plus ascorbic acid (PA) groups. From one week prior to mating, female rats were administered Pb (0.3% Pb acetate in drinking water) and ascorbic acid (100 mg/kg, oral intubation). The chemical administration was stopped on postnatal day 21 when the morphology of the offspring's cerebellum is similar to that of the adult brain. The blood Pb level was significantly increased following long-term Pb exposure. Ascorbic acid reduced Pb levels in the dams and offspring. Nissl staining demonstrated that the number of Purkinje cells was significantly reduced following Pb exposure, while ascorbic acid ameliorated this effect in the cerebellum of the offspring. Calcium-binding proteins, such as calbindin, calretinin, and parvalbumin were commonly expressed in Purkinje cells, and Pb exposure and ascorbic acid treatment resulted in similar patterns of change, namely Pb-induced impairment and ascorbic acid-mediated amelioration. The gamma-aminobutyric acid transporter 1 (GABAT1) is expressed in the pinceau structure where the somata of Purkinje cells are entwined in inhibitory synapses. The number of GABAT1-immunoreactive synapses was reduced following Pb exposure, and ascorbic acid co-treatment prevented this effect in the cerebellar cortex. Therefore, it can be concluded that ascorbic acid supplementation to mothers during gestation and lactation may have potential preventive effects against Pb-induced impairments in the developing cerebellum via protection of inhibitory neurons and synapses.
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Affiliation(s)
- Sung Min Nam
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Korea.,College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Korea
| | - Jin Seok Seo
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Korea
| | - Sang-Soep Nahm
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Korea.,College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Korea
| | - Byung-Joon Chang
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Korea.,College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Korea
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13
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Baty RS, Hassan KE, Alsharif KF, El-Hennamy RE, Elmahallawy EK, Hafez MM, Moneim AA, Kassab RB. Neuroprotective role of luteolin against lead acetate-induced cortical damage in rats. Hum Exp Toxicol 2020; 39:1200-1212. [PMID: 32208856 DOI: 10.1177/0960327120913094] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Luteolin (LUT) is a glycosylated flavonoid compound that has multiple beneficial pharmacological and biological impacts. The current investigation was undertaken to evaluate the putative neuroprotective potency of LUT against neuronal damage induced by lead acetate (PbAc). Twenty-eight rats were placed into four equal groups. Group 1: served as the control group, group 2: rats were supplemented orally with LUT (50 mg kg-1), group 3: rats were intraperitoneally injected with PbAc (20 mg kg-1), and group 4: rats were pretreated with LUT before PbAc injection with the same doses. All animals were treated for 7 days. The exposure to PbAc increased the concentration of lead in the cortical tissue, neuronal lipid peroxidation, and nitric oxide (NO) production and decreased the antioxidant enzymes. Additionally, PbAc enhanced a neuroinflammatory response in the cortical tissue through increasing the pro-inflammatory cytokines secretion and inducible NO synthase expression. Moreover, cortical cell death was recorded following PbAc intoxication as evidenced by the enhancement of the proapoptotic and inhibiting the antiapoptotic markers. Interestingly, LUT supplementation reversed the cortical adverse reactions induced by PbAc. Taken together, these findings may suggest that LUT may be useful for attenuating neuronal damage induced by PbAc through inhibiting the oxidative damage, neuroinflammation, and the cortical cell death.
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Affiliation(s)
- R S Baty
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - K E Hassan
- Department of Pathology, College of Medicine, Taif University, Taif, Saudi Arabia
| | - K F Alsharif
- Department of Clinical Laboratory Science, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - R E El-Hennamy
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - E K Elmahallawy
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam.,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - M M Hafez
- Department of Biochemistry, Faculty of Pharmacy, Ahram Canadian University (ACU), Giza, Egypt
| | - Ae Abdel Moneim
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - R B Kassab
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
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14
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Nam SM, Choi SH, Cho HJ, Seo JS, Choi M, Nahm SS, Chang BJ, Nah SY. Ginseng Gintonin Attenuates Lead-Induced Rat Cerebellar Impairments during Gestation and Lactation. Biomolecules 2020; 10:biom10030385. [PMID: 32131481 PMCID: PMC7175158 DOI: 10.3390/biom10030385] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 12/13/2022] Open
Abstract
Gintonin, a novel ginseng-derived lysophosphatidic acid receptor ligand, improves brain functions and protects neurons from oxidative stress. However, little is known about the effects of gintonin against Pb-induced brain maldevelopment. We investigated the protective effects of gintonin on the developing cerebellum after prenatal and postnatal Pb exposure. Pregnant female rats were randomly divided into three groups: control, Pb (0.3% Pb acetate in drinking water), and Pb plus gintonin (100 mg/kg, p.o.). Blood Pb was increased in dams and pups; gintonin treatment significantly decreased blood Pb. On postnatal day 21, the number of degenerating Purkinje cells was remarkably increased while the number of calbindin-, GAD67-, NMDAR1-, LPAR1-immunoreactive intact Purkinje cells, and GABA transporter 1-immunoreactive pinceau structures were significantly reduced in Pb-exposed offspring. Following Pb exposure, gintonin ameliorated cerebellar degenerative effects, restored increased pro-apoptotic Bax, and decreased anti-apoptotic Bcl2. Gintonin treatment attenuated Pb-induced accumulation of oxidative stress (Nrf2 and Mn-SOD) and inflammation (IL-1β and TNFα,), restoring the decreased cerebellar BDNF and Sirt1. Gintonin ameliorated Pb-induced impairment of myelin basic protein-immunoreactive myelinated fibers of Purkinje cells. Gintonin attenuated Pb-induced locomotor dysfunctions. The present study revealed the ameliorating effects of gintonin against Pb, suggesting the potential use of gintonin as a preventive agent in Pb poisoning during pregnancy and lactation.
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Affiliation(s)
- Sung Min Nam
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.M.N.); (J.S.S.); (M.C.); (S.-S.N.); (B.-J.C.)
| | - Sun-Hye Choi
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.-H.C.); (H.-J.C.)
| | - Hee-Jung Cho
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.-H.C.); (H.-J.C.)
| | - Jin Seok Seo
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.M.N.); (J.S.S.); (M.C.); (S.-S.N.); (B.-J.C.)
| | - Minsuk Choi
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.M.N.); (J.S.S.); (M.C.); (S.-S.N.); (B.-J.C.)
| | - Sang-Soep Nahm
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.M.N.); (J.S.S.); (M.C.); (S.-S.N.); (B.-J.C.)
| | - Byung-Joon Chang
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.M.N.); (J.S.S.); (M.C.); (S.-S.N.); (B.-J.C.)
| | - Seung-Yeol Nah
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (S.-H.C.); (H.-J.C.)
- Correspondence: ; Tel.: +82-2-450-4154
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15
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Nam SM, Seo JS, Go TH, Nahm SS, Chang BJ. Ascorbic Acid Supplementation Prevents the Detrimental Effects of Prenatal and Postnatal Lead Exposure on the Purkinje Cell and Related Proteins in the Cerebellum of Developing Rats. Biol Trace Elem Res 2019; 190:446-456. [PMID: 30488169 DOI: 10.1007/s12011-018-1572-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/07/2018] [Indexed: 02/06/2023]
Abstract
We investigated the effects of lead (Pb) and ascorbic acid co-administration on rat cerebellar development. Prior to mating, rats were randomly divided into control, Pb, and Pb plus ascorbic acid (PA) groups. Pregnant rats were administered Pb in drinking water (0.3% Pb acetate), and ascorbic acid (100 mg/kg) via oral intubation until the end of the experiment. Offspring were sacrificed at postnatal day 21, the age at which the morphology of the cerebellar cortex in developing pups is similar to that of the adult brain. In the cerebellum, Pb exposure significantly reduced Purkinje cells and ascorbic acid prevented their reduction. Along with the change of the Purkinje cells, long-term Pb exposure significantly reduced the expression of the synaptic marker (synaptophysin), γ-aminobutyric acid (GABA)-synthesizing enzyme (glutamic acid decarboxylase 67), and axonal myelin basic protein while ascorbic acid co-treatment attenuated Pb-mediated reduction of these proteins in the cerebellum of pups. However, glutamatergic N-methyl-D-aspartate receptor subtype 1 (NMDAR1), anchoring postsynaptic density protein 95 (PSD95), and antioxidant superoxide dismutases (SODs) were adversely changed; Pb exposure increased the expression of NMDAR1, PSD95, and SODs while ascorbic acid co-administration attenuated Pb-mediated induction. Although further studies are required about the neurotoxicity of the Pb exposure, the results presented here suggest that developmental Pb exposure disrupted normal development of Purkinje cells by increasing glutamatergic and oxidative stress in the cerebellum. Additionally, ascorbic acid co-treatment is beneficial in attenuating prenatal and postnatal Pb exposure-induced maldevelopment of Purkinje cells in the developing cerebellum.
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Affiliation(s)
- Sung Min Nam
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea
| | - Jin Seok Seo
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
| | - Tae-Hun Go
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
| | - Sang-Soep Nahm
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea
| | - Byung-Joon Chang
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea.
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea.
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16
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Nam SM, Seo JS, Nahm SS, Chang BJ. Effects of Ascorbic Acid on Osteopontin Expression and Axonal Myelination in the Developing Cerebellum of Lead-Exposed Rat Pups. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16060983. [PMID: 30893812 PMCID: PMC6466450 DOI: 10.3390/ijerph16060983] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 12/29/2022]
Abstract
Osteopontin (OPN) is a multi-functional protein that binds to integrin and calcium-binding phosphoprotein. OPN is required for normal neuronal development and its axonal myelination. We studied the combined effect of lead (Pb) and ascorbic acid treatment on OPN expression in the developing cerebellum. We randomly divided pregnant female rats into three groups: control, Pb (lead acetate, 0.3%, drinking water), and Pb plus ascorbic acid (PA; ascorbic acid, 100 mg/kg, oral intubation) groups. The blood level of Pb was significantly increased, while ascorbic acid reduced Pb levels in the dams and pups. At postnatal day (PND) 21, results from Nissl staining and OPN immunohistochemistry demonstrated that OPN was detected in the Purkinje cell layer in the cerebellum. Ascorbic acid treatment mitigated Pb exposure-induced reduction in the number of intact Purkinje cells and OPN immunoreactive Purkinje cells in the cerebellum of pups. In addition, Pb-induced reduction in the number of oligodendrocytes and myelin-associated glycoprotein is associated with the malformation of the myelin sheath. Ascorbic acid provided protection from Pb-induced impairments. Pb-induced structural deficits in the cerebellum resulted in functional deterioration observed during locomotive tests (bar holding test and wire mesh ascending test), while ascorbic acid ameliorated these harmful effects. Present results suggest that the change of OPN is associated with myelination in the developing cerebellum. The results also demonstrated that exposure to Pb is harmful, while ascorbic acid treatment is beneficial.
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Affiliation(s)
- Sung Min Nam
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea.
| | - Jin Seok Seo
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea.
| | - Sang-Soep Nahm
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea.
| | - Byung-Joon Chang
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul 05030, Korea.
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17
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Nam SM, Cho IS, Seo JS, Go TH, Kim JH, Nahm SS, Chang BJ, Lee JH. Ascorbic Acid Attenuates Lead-Induced Alterations in the Synapses in the Developing Rat Cerebellum. Biol Trace Elem Res 2019; 187:142-150. [PMID: 29696534 DOI: 10.1007/s12011-018-1354-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 04/17/2018] [Indexed: 11/26/2022]
Abstract
We evaluated the effect of lead (Pb) and ascorbic acid treatment of pregnant female rats on cerebellar development in pups. Pb was administered in drinking water (0.2% Pb acetate), and ascorbic acid (100 mg/kg) was administered through oral intubation. Fifteen female rats were randomly classified into control, Pb, and Pb plus ascorbic acid (PA) groups. The treatment of Pb and ascorbic acid treatments were terminated after birth to evaluate the effects on the gestational development of the cerebellum. At postnatal day 21 (PND21), pups were sacrificed, and blood Pb level was analyzed. Blood Pb levels of pups and dams were highest in the Pb group and reduced in the PA group. Immunohistochemistry and immunoblot assays were conducted to study the cerebellar expression levels of synaptic proteins. Along with a significant reduction in Purkinje cells, the reduction in presynaptic (synaptophysin) and postsynaptic (postsynaptic density protein 95, N-methyl-D-aspartate receptor subtype 1) marker proteins was observed in Pb-exposed pups. Ascorbic acid treatment significantly prevented Pb-induced impairment in the cerebellar synaptic proteins. Hypothesizing that brain-derived neurotrophic factor (BDNF) might be affected by Pb exposure given its importance in the regulation of synaptogenesis, we observed a Pb-induced decrease and ascorbic acid-mediated increase of BDNF in the cerebellum. Luxol fast blue staining and myelin basic protein analysis suggest that ascorbic acid treatment ameliorated the Pb exposure-induced reduction in the axonal fibers in the developing cerebellum. Overall, we conclude that ascorbic acid treatment during pregnancy can prevent Pb-induced impairments in the cerebellar development in rats.
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Affiliation(s)
- Sung Min Nam
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea
| | - In-Sun Cho
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
- Korea Bio-Safety Institute Co. Ltd, Eumseong, Chungbuk, 27600, Republic of Korea
| | - Jin Seok Seo
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
| | - Tae-Hun Go
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
| | - Ji-Hye Kim
- Department of Rehabilitation Psychology, Seoul Rehabilitation Hospital, Seoul, 03428, Republic of Korea
| | - Sang-Soep Nahm
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea
| | - Byung-Joon Chang
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea.
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea.
| | - Jong-Hwan Lee
- Department of Anatomy, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05030, Republic of Korea.
- College of Veterinary Medicine and Veterinary Science Research Institute, Konkuk University, Seoul, 05030, Republic of Korea.
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