1
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Kim S, Lee Y, Seu MS, Sim Y, Ryu JH. Enzyme-instructed intramitochondrial polymerization for enhanced anticancer treatment without the development of drug-resistance. J Control Release 2024; 373:189-200. [PMID: 39002798 DOI: 10.1016/j.jconrel.2024.07.029] [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: 04/19/2024] [Revised: 07/07/2024] [Accepted: 07/10/2024] [Indexed: 07/15/2024]
Abstract
Intracellular polymerization in living cells motivated chemists to generate polymeric structures with a multitude of possibilities to interact with biomacromolecules. However, out-of-control of the intracellular chemical reactions would be an obstacle restricting its application, providing the toxicity of non-targeted cells. Here, we reported intracellular thioesterase-mediated polymerization for selectively occurring polymerization using disulfide bonds in cancer cells. The acetylated monomers did not form disulfide bonds even under an oxidative environment, but they could polymerize into the polymeric structure after cleavage of acetyl groups only when encountered activity of thioesterase enzyme. Furthermore, acetylated monomers could be self-assembled with doxorubicin, providing doxorubicin loaded micelles for efficient intracellular delivery of drug and monomers. Since thioesterase enzymes were overexpressed in cancer cells specifically, the micelles were disrupted under activity of the enzyme and the polymerization could occur selectively in the cancer mitochondria. The resulting polymeric structures disrupted the mitochondrial membrane, thus activating the cellular death of cancer cells with high selectivity. This strategy selectively targets diverse cancer cells involving drug-resistant cells over normal cells. Moreover, the mitochondria targeting strategy overcomes the development of drug resistance even with repeated treatment. This approach provides a way for selective intracellular polymerization with desirable anticancer treatment.
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Affiliation(s)
- Sangpil Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeji Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min-Seok Seu
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Youjung Sim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Ja-Hyoung Ryu
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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2
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Almonti V, Vernazza S, Mirata S, Tirendi S, Passalacqua M, Gualtieri AF, Di Giuseppe D, Scarfì S, Bassi AM. Toxicity and inflammatory potential of mineral fibres: The contribute of released soluble metals versus cell contact direct effects. J Appl Toxicol 2024; 44:1166-1183. [PMID: 38605572 DOI: 10.1002/jat.4610] [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] [Received: 02/06/2024] [Revised: 03/05/2024] [Accepted: 03/23/2024] [Indexed: 04/13/2024]
Abstract
Asbestos fibres have been considered an environmental hazard for decades. However, little is known about the attempts of circulating immune cells to counteract their toxicity. We addressed the early effects of fibre-released soluble factors (i.e. heavy metals) in naïve immune cells, circulating immediately below the alveolar/endothelial cell layer. By comparison, the direct fibre effects on endotheliocytes were also studied since these cells are known to sustain inflammatory processes. The three mineral fibres analysed showed that mainly chrysotile (CHR) and erionite (ERI) were able to release toxic metals in extracellular media respect to crocidolite (CRO), during the first 24 h. Nevertheless, all three fibres were able to induce oxidative stress and genotoxic damage in indirectly challenged naïve THP-1 monocytes (separated by a membrane). Conversely, only CHR-released metal ions induced apoptosis, NF-κB activation, cytokines and CD163 gene overexpression, indicating a differentiation towards the M0 macrophage phenotype. On the other hand, all three mineral fibres in direct contact with HECV endothelial cells showed cytotoxic, genotoxic and apoptotic effects, cytokines and ICAM-I overexpression, indicating the ability of these cells to promote an inflammatory environment in the lung independently from the type of inhaled fibre. Our study highlights the different cellular responses to mineral fibres resulting from both the nature of the cells and their function, but also from the chemical-physical characteristics of the fibres. In conclusion, CHR represented the main pro-inflammatory trigger, able to recruit and activate circulating naïve monocytes, through its released metals, already in the first 24 h after inhalation.
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Affiliation(s)
- Vanessa Almonti
- Department Experimental Medicine, University of Genova, Genova, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
| | - Stefania Vernazza
- Department Experimental Medicine, University of Genova, Genova, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
| | - Serena Mirata
- Department Experimental Medicine, University of Genova, Genova, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
| | - Sara Tirendi
- Department Experimental Medicine, University of Genova, Genova, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
| | - Mario Passalacqua
- Department Experimental Medicine, University of Genova, Genova, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
| | | | - Dario Di Giuseppe
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Sonia Scarfì
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
- Department Earth, Environment and Life Sciences, University of Genova, Genova, Italy
| | - Anna Maria Bassi
- Department Experimental Medicine, University of Genova, Genova, Italy
- Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Pisa, Italy
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3
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Dong X, Li W, Li C, Akan OD, Liao C, Cao J, Zhang L. Integrated transcriptomics and metabolomics revealed the mechanism of catechin biosynthesis in response to lead stress in tung tree (Vernicia fordii). THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172796. [PMID: 38692325 DOI: 10.1016/j.scitotenv.2024.172796] [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: 01/15/2024] [Revised: 04/24/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
Lead (Pb) affects gene transcription, metabolite biosynthesis and growth in plants. The tung tree (Vernicia fordii) is highly adaptive to adversity, whereas the mechanisms underlying its response to Pb remain uncertain. In this work, transcriptomic and metabolomic analyses were employed to study tung trees under Pb stress. The results showed that the biomass of tung seedlings decreased with increasing Pb doses, and excessive Pb doses resulted in leaf wilting, root rot, and disruption of Pb homeostasis. Under non-excessive Pb stress, a significant change in the expression patterns of flavonoid biosynthesis genes was observed in the roots of tung seedlings, leading to changes in the accumulation of flavonoids in the roots, especially the upregulation of catechins, which can chelate Pb and reduce its toxicity in plants. In addition, Pb-stressed roots showed a large accumulation of VfWRKY55, VfWRKY75, and VfLRR1 transcripts, which were shown to be involved in the flavonoid biosynthesis pathway by gene module analysis. Overexpression of VfWRKY55, VfWRKY75, and VfLRR1 significantly increased catechin concentrations in tung roots, respectively. These data indicate that Pb stress-induced changes in the expression patterns of those genes regulate the accumulation of catechins. Our findings will help to clarify the molecular mechanism of Pb response in plants.
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Affiliation(s)
- Xiang Dong
- Key Laboratory of Cultivation and Protection for Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
| | - Wenying Li
- Key Laboratory of Cultivation and Protection for Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, Hubei 438000, China
| | - Changzhu Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
| | - Otobong Donald Akan
- Key Laboratory of Cultivation and Protection for Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; Faculty of Biological Science, Akwa-Ibom State University, Akwa-Ibom State, Uyo 1167, Nigeria
| | - Chancan Liao
- Key Laboratory of Cultivation and Protection for Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jie Cao
- Key Laboratory of Cultivation and Protection for Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lin Zhang
- Key Laboratory of Cultivation and Protection for Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China.
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4
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Li L, Li W, Liu Y, Jin X, Yu Y, Lin H. TBBPA and lead co-exposure induces grass carp liver cells apoptosis via ROS/JAK2/STAT3 signaling axis. FISH & SHELLFISH IMMUNOLOGY 2023; 142:109100. [PMID: 37793490 DOI: 10.1016/j.fsi.2023.109100] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/06/2023]
Abstract
Tetrabromobisphenol A (TBBPA) and lead (Pb) are widely used in industrial field, which poses a serious threat to human and animal health. In particular, a large volume of wastewater containing TBBPA and Pb was discharged into the aquatic environment, causing a seriously negative impact on fish. Currently, whether TBBPA and Pb have a synergistic toxicity on fish remains unclear. In this study, we used the grass carp hepatocytes (L8824 cell line) exposed to either TBBPA or Pb, or both to determine their potential impacts on fish. The results showed that Pb or TBBPA induced oxidative stress and the loss of mitochondrial membrane potential in grass carp hepatocytes. In contrast to the control cells, the levels of JAK2, p-JAK2, STAT3 and p-STAT3 were significantly upregulated after exposure to TBBPA and Pb. Furthermore, the levels of Caspase3, Caspase9 and Bax were all increased while the level of Bcl2 was decreased in hepatocytes exposed to TBBPA or Pb. Results of flow cytometry and AO/EB staining reveled significant increases in the number of apoptotic cells in the TBBPA and Pb group compared to the controls. Notably, cells exposed to both TBBPA and Pb exhibited more severe damage than the single exposure, manifested by a higher number of apoptotic cells in the co-exposure group than the single exposure groups. Nevertheless, N-acetyl-l-cysteine (NAC) treatment could remarkably alleviate oxidative damage and loss of membrane potential in grass carp hepatocytes induced by TBBPA and Pb. Altogether, our study showed that combined exposure of TBBPA and Pb has a synergistic toxicity due to, inducing oxidative stress to activate JAK2/STAT3 signaling pathway, resulting in apoptosis of carp hepatocytes. This study shed a new light on the toxicological mechanism of exposure of TBBPA and Pb and provided a potential treatment of toxicity induced by TBBPA and Pb.
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Affiliation(s)
- Lu Li
- Northeast Agricultural University, Harbin, 150030, PR China
| | - Wan Li
- Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, PR China
| | - Yufeng Liu
- Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, PR China
| | - Xin Jin
- Northeast Agricultural University, Harbin, 150030, PR China
| | - Yanbo Yu
- Northeast Agricultural University, Harbin, 150030, PR China
| | - Hongjin Lin
- Northeast Agricultural University, Harbin, 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China.
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5
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Gerdemann A, Broenhorst M, Behrens M, Humpf HU, Esselen M. Polyphenols Cause Structure Dependent Effects on the Metabolic Profile of Human Hepatocarcinogenic Cells. Mol Nutr Food Res 2023; 67:e2300052. [PMID: 37672806 DOI: 10.1002/mnfr.202300052] [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: 01/30/2023] [Revised: 07/03/2023] [Indexed: 09/08/2023]
Abstract
SCOPE Although many beneficial health effects are attributed to polyphenols their influence on the human metabolome has not been elucidated yet. The ubiquitous occurrence of polyphenols in the human diet demands comprehensive knowledge about physiological and toxicological effects of these compounds on human cells. METHODS AND RESULTS The human hepatocarcinogenic cell line HepG2 is used to elucidate the effects of 13 polyphenols and three respective phenolic degradation products on the human metabolome using HPLC-MS/MS. To investigate structure-activity-relationships, structurally related examples of polyphenols from different compound classes are selected. The analysis of catechins points toward a relation between the degree of hydroxylation and the extent of metabolic effects particularly on the urea cycle and the pentose phosphate pathway (PPP). A correlation between the modulation of the PPP and the stability of the compounds is demonstrated, which may be caused by reactive oxygen species (ROS). The incubation of flavones and alkenylbenzenes demonstrates reduced activity of methoxylated compounds and no impact of the B-ring position. CONCLUSION In general, polyphenols induce a multitude of metabolic effects, for example, on energy metabolism, PPP, and urea cycle. These metabolic alterations may be related to the widely reported bioactivity of these compounds such as the anticarcinogenic effects.
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Affiliation(s)
- Andrea Gerdemann
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Melissa Broenhorst
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Matthias Behrens
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Melanie Esselen
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
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6
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Destro ALF, da Silva Mattosinhos P, Novaes RD, Sarandy MM, Gonçalves RV, Freitas MB. Impact of plant extracts on hepatic redox metabolism upon lead exposure: a systematic review of preclinical in vivo evidence. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:91563-91590. [PMID: 37495800 DOI: 10.1007/s11356-023-28620-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 07/01/2023] [Indexed: 07/28/2023]
Abstract
The liver is a central target organ of heavy metals toxicity, and secondary metabolites of several plant species are suggested to attenuate lead (Pb)-induced hepatotoxicity through antioxidant and anti-inflammatory mechanisms. We used a systematic review framework to map the impact of plant extracts and bioactive secondary metabolites on immunological markers and liver redox metabolism in preclinical models of Pb exposure. This is a systematic review performed according to PRISMA guidelines. The structured research of publications was done through PubMed, Scopus, Web of Science, and Embase databases, selecting and analyzing 41 original studies included via the eligibility criteria. Evidence indicates that Pb-exposure increases reactive oxygen/nitrogen species (ROS/RNS) production by δ-aminolevulinic acid auto-oxidation, xanthine dehydrogenase, and xanthine oxidase upregulation. Pb exposure also inhibits antioxidant enzymes, potentiating ROS/NOS levels and reactive cell damage. Plant extracts rich in flavonoids, tannins, alkaloids, anthocyanins, and vitamins exerted hepatoprotective effects by chelating and decreasing Pb bioaccumulation. In addition, plant extracts reinforce exogenous and endogenous antioxidant defenses, attenuating liver oxidative stress and cell death. The lack of blinded evaluators and randomized experimental groups were the main sources of bias identified, which need to be controlled in toxicological studies aimed at identifying natural products applied to the prevention or treatment of Pb poisoning.
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Affiliation(s)
- Ana Luiza Fonseca Destro
- Department of Animal Biology, Federal University of Viçosa, Minas Gerais, Viçosa, MG, 36570-900, Brazil.
| | | | - Rômulo Dias Novaes
- Department of Structural Biology, Institute of Biomedical Sciences, Federal University of Alfenas, Alfenas, MG, 37130-001, Brazil
| | | | | | - Mariella Bontempo Freitas
- Department of Animal Biology, Federal University of Viçosa, Minas Gerais, Viçosa, MG, 36570-900, Brazil
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7
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Chen B, Zhang W, Lin C, Zhang L. A Comprehensive Review on Beneficial Effects of Catechins on Secondary Mitochondrial Diseases. Int J Mol Sci 2022; 23:ijms231911569. [PMID: 36232871 PMCID: PMC9569714 DOI: 10.3390/ijms231911569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/13/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
Mitochondria are the main sites for oxidative phosphorylation and synthesis of adenosine triphosphate in cells, and are known as cellular power factories. The phrase "secondary mitochondrial diseases" essentially refers to any abnormal mitochondrial function other than primary mitochondrial diseases, i.e., the process caused by the genes encoding the electron transport chain (ETC) proteins directly or impacting the production of the machinery needed for ETC. Mitochondrial diseases can cause adenosine triphosphate (ATP) synthesis disorder, an increase in oxygen free radicals, and intracellular redox imbalance. It can also induce apoptosis and, eventually, multi-system damage, which leads to neurodegenerative disease. The catechin compounds rich in tea have attracted much attention due to their effective antioxidant activity. Catechins, especially acetylated catechins such as epicatechin gallate (ECG) and epigallocatechin gallate (EGCG), are able to protect mitochondria from reactive oxygen species. This review focuses on the role of catechins in regulating cell homeostasis, in which catechins act as a free radical scavenger and metal ion chelator, their protective mechanism on mitochondria, and the protective effect of catechins on mitochondrial deoxyribonucleic acid (DNA). This review highlights catechins and their effects on mitochondrial functional metabolic networks: regulating mitochondrial function and biogenesis, improving insulin resistance, regulating intracellular calcium homeostasis, and regulating epigenetic processes. Finally, the indirect beneficial effects of catechins on mitochondrial diseases are also illustrated by the warburg and the apoptosis effect. Some possible mechanisms are shown graphically. In addition, the bioavailability of catechins and peracetylated-catechins, free radical scavenging activity, mitochondrial activation ability of the high-molecular-weight polyphenol, and the mitochondrial activation factor were also discussed.
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8
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Bandaru LJM, Ayyalasomayajula N, Murumulla L, Challa S. Mechanisms associated with the dysregulation of mitochondrial function due to lead exposure and possible implications on the development of Alzheimer's disease. Biometals 2022; 35:1-25. [PMID: 35048237 DOI: 10.1007/s10534-021-00360-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 12/09/2021] [Indexed: 01/17/2023]
Abstract
Lead (Pb) is a multimedia contaminant with various pathophysiological consequences, including cognitive decline and neural abnormalities. Recent findings have reported an association of Pb toxicity with Alzheimer's disease (AD). Studies have revealed that mitochondrial dysfunction is a pathological characteristic of AD. According to toxicology reports, Pb promotes mitochondrial oxidative stress by lowering complex III activity in the electron transport chain, boosting reactive oxygen species formation, and reducing the cell's antioxidant defence system. Here, we review recent advances in the role of mitochondria in Pb-induced AD pathology, as well as the mechanisms associated with the mitochondrial dysfunction, such as the depolarisation of the mitochondrial membrane potential, mitochondrial permeability transition pore opening; mitochondrial biogenesis, bioenergetics and mitochondrial dynamics alterations; and mitophagy and apoptosis. We also discuss possible therapeutic options for mitochondrial-targeted neurodegenerative disease (AD).
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Affiliation(s)
- Lakshmi Jaya Madhuri Bandaru
- Department of Cell Biology, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India
| | - Neelima Ayyalasomayajula
- Department of Cell Biology, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India
| | - Lokesh Murumulla
- Department of Cell Biology, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India
| | - Suresh Challa
- Department of Cell Biology, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India.
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9
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Li Y, Lv H, Xue C, Dong N, Bi C, Shan A. Plant Polyphenols: Potential Antidotes for Lead Exposure. Biol Trace Elem Res 2021; 199:3960-3976. [PMID: 33236294 DOI: 10.1007/s12011-020-02498-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/15/2020] [Indexed: 12/17/2022]
Abstract
Lead is one of the most common heavy metal elements and has high biological toxicity. Long-term lead exposure will induce the contamination of animal feed, water, and food, which can cause chronic lead poisoning including nephrotoxicity, hepatotoxicity, neurotoxicity, and reproductive toxicity in humans and animals. In the past few decades, lead has caused widespread concern because of its significant threat to health. A large number of in vitro and animal experiments have shown that oxidative stress plays a key role in lead toxicity, and endoplasmic reticulum (ER) stress and the mitochondrial apoptosis pathway can also be induced by lead toxicity. Therefore, plant polyphenols have attracted attention, with their advantages of being natural antioxidants and having low toxicity. Plant polyphenols can resist lead toxicity by chelating lead with their special chemical molecular structure. In addition, scavenging active oxygen and improving the level of antioxidant enzymes, anti-inflammatory, and anti-apoptosis are also the key to relieving lead poisoning by plant polyphenols. Various plant polyphenols have been suggested to be useful in alleviating lead toxicity in animals and humans and are believed to have good application prospects.
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Affiliation(s)
- Ying Li
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, People's Republic of China
| | - Hao Lv
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, People's Republic of China
| | - Chenyu Xue
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, People's Republic of China
| | - Na Dong
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, People's Republic of China.
| | - Chongpeng Bi
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, People's Republic of China
| | - Anshan Shan
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, People's Republic of China
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10
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Bloise A, Ricchiuti C, Navarro R, Punturo R, Lanzafame G, Pereira D. Natural occurrence of asbestos in serpentinite quarries from Southern Spain. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:2965-2983. [PMID: 33475943 DOI: 10.1007/s10653-021-00811-7] [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: 05/11/2020] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
The nevado-filábride complex (NFC) (southern Spain) is well known for its widespread mining and quarrying activities. Serpentinite and metabasite rocks are extracted, processed and traded as building and ornamental stones. Due to the possible presence of natural occurrence of asbestos (NOA) in these rocks, the aim of this paper is to conduct an in-depth characterisation of fibrous minerals. To this aim, seven serpentinite rock samples were collected in four quarries located in the Sierra Nevada and Sierra de los Filabres (South-eastern Spain), which were then analysed by X-ray powder diffraction (XRPD), scanning electron microscopy combined with energy-dispersive spectrometry (SEM/EDS), differential scanning calorimetry (DSC), derivative thermogravimetry (DTG) and X-ray synchrotron microtomography (SR-µCT). It is essential to investigate asbestos minerals from both scientific and legal perspective, especially for public health officials that implement occupational health and safety policies, in order to safeguard the health of workers (e.g. quarry excavations, road yards, civil constructions, building stones).
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Affiliation(s)
- Andrea Bloise
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Cubo 15b, 87036, Rende, CS, Italy.
| | - Claudia Ricchiuti
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95129, Catania, Italy
| | - Rafael Navarro
- CHARROCK Research Group, University of Salamanca, Plaza de los Caídos s/n, 37008, Salamanca, Spain
| | - Rosalda Punturo
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95129, Catania, Italy
| | - Gabriele Lanzafame
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95129, Catania, Italy
| | - Dolores Pereira
- CHARROCK Research Group, University of Salamanca, Plaza de los Caídos s/n, 37008, Salamanca, Spain
- Geology Department, Science Faculty, University of Salamanca, Plaza Merced s/n, 37008, Salamanca, Spain
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11
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Gadde R, Betharia S. N,N'bis-(2-mercaptoethyl) isophthalamide (NBMI) exerts neuroprotection against lead-induced toxicity in U-87 MG cells. Arch Toxicol 2021; 95:2643-2657. [PMID: 34165617 DOI: 10.1007/s00204-021-03103-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/15/2021] [Indexed: 11/30/2022]
Abstract
N,N'-bis(2-mercaptoethyl)isophthalamide (NBMI) is a novel lipophilic heavy metal chelator and thiol redox antioxidant. This study was designed to investigate the neuroprotective activity of NBMI in U-87 MG cells exposed to lead acetate (PbAc). Cells were pretreated with NBMI for 24 h prior to a 48 h exposure to PbAc. Cell death (55%, p < 0.0001) and reduction of intracellular GSH levels (0.70-fold, p < 0.005) induced by 250 µM Pb were successfully attenuated by NBMI pretreatment at concentrations as low as 10 µM. A similar pretreatment with the FDA-approved Pb chelator dimercaptosuccinic acid (DMSA) proved ineffective, indicating a superior PKPD profile for NBMI. Pretreatment with NBMI successfully counteracted Pb-induced neuroinflammation by reducing IL-1β (0.59-fold, p < 0.05) and GFAP expression levels. NBMI alone was also found to significantly increase ferroportin expression (1.97-fold, p < 0.05) thereby enhancing cellular ability to efflux heavy metals. While no response was observed on the apoptotic pathway, this study demonstrated for the first time that necrotic cell death induced by Pb in U-87 MG cells is successfully attenuated by NBMI. Collectively these data demonstrate NBMI to be a promising neuroprotective compound in the realm of Pb poisoning.
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Affiliation(s)
- Rajitha Gadde
- Department of Pharmaceutical Sciences, School of Pharmacy, MCPHS University, 179 Longwood Avenue, Boston, MA, 02115, USA.
| | - Swati Betharia
- Department of Pharmaceutical Sciences, School of Pharmacy, MCPHS University, 179 Longwood Avenue, Boston, MA, 02115, USA
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12
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Ji X, Wang B, Paudel YN, Li Z, Zhang S, Mou L, Liu K, Jin M. Protective Effect of Chlorogenic Acid and Its Analogues on Lead-Induced Developmental Neurotoxicity Through Modulating Oxidative Stress and Autophagy. Front Mol Biosci 2021; 8:655549. [PMID: 34179077 PMCID: PMC8226318 DOI: 10.3389/fmolb.2021.655549] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/04/2021] [Indexed: 11/24/2022] Open
Abstract
Lead (Pb) is among the deleterious heavy metal and has caused global health concerns due to its tendency to cause a detrimental effect on the development of the central nervous system (CNS). Despite being a serious health concern, treatment of Pb poisoning is not yet available, reflecting the pressing need for compounds that can relieve Pb-induced toxicity, especially neurotoxicity. In the quest of exploring protective strategies against Pb-induced developmental neurotoxicity, compounds from natural resources have gained increased attention. Chlorogenic acid (CGA) and its analogues neochlorogenic acid (NCGA) and cryptochlorogenic acid (CCGA) are the important phenolic compounds widely distributed in plants. Herein, utilizing zebrafish as a model organism, we modeled Pb-induced developmental neurotoxicity and investigated the protective effect of CGA, NCGA, and CCGA co-treatment. In zebrafish, Pb exposure (1,000 μg/L) for 5 days causes developmental malformation, loss of dopaminergic (DA) neurons, and brain vasculature, as well as disrupted neuron differentiation in the CNS. Additionally, Pb-treated zebrafish exhibited abnormal locomotion. Notably, co-treatment with CGA (100 µM), NCGA (100 µM), and CCGA (50 µM) alleviated these developmental malformation and neurotoxicity induced by Pb. Further underlying mechanism investigation revealed that these dietary phenolic acid compounds may ameliorate Pb-induced oxidative stress and autophagy in zebrafish, therefore protecting against Pb-induced developmental neurotoxicity. In general, our study indicates that CGA, NCGA, and CCGA could be promising agents for treating neurotoxicity induced by Pb, and CCGA shows the strongest detoxifying activity.
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Affiliation(s)
- Xiuna Ji
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China
| | - Baokun Wang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China
| | - Yam Nath Paudel
- Neuropharmacology Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Zhihui Li
- School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Shanshan Zhang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China
| | - Lei Mou
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China
| | - Kechun Liu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China
| | - Meng Jin
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China
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13
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Yu L, Yu Y, Yin R, Duan H, Qu D, Tian F, Narbad A, Chen W, Zhai Q. Dose-dependent effects of lead induced gut injuries: An in vitro and in vivo study. CHEMOSPHERE 2021; 266:129130. [PMID: 33310514 DOI: 10.1016/j.chemosphere.2020.129130] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Lead (Pb) toxicity has been widely studied, but its dose-dependent toxic effects on the gut remain unclear, therefore, the aim of this study was to evaluate the effects of different doses of Pb exposure on the gut microbiota and gut barrier in vitro and in vivo. The HT-29 cell model was used to determine the Pb-induced effects on cell viability, reactive oxygen species (ROS), and tight junction proteins (TJPs) in vitro, and C57BL/6 mice models exposed to 0, 20, 100, 500, and 1000 mg/kg Pb were used to investigate the Pb-induced dose-dependent effects on the gut microbiota, TJP expression, and colon histopathology. Our results showed that the exposure of HT-29 cells to 8 mM Pb decreased cell viability by 50%, elevated ROS levels by 200%, and suppressed the expression of the TJPs, zonula occludens-1 (ZO-1) and occludin by 23% and 35%, respectively. Consistently, Pb-exposed mice showed significant increases in colon tissue damage and inflammation and reductions in ZO-1 mRNA levels in a dose-dependent manner. The occludin mRNA levels decreased in the 500 and 1000 mg/kg groups. At the genus level, the relative abundance of Coprococcus and Oscillospira decreased and that of Lactobacillus increased in linear manner with the Pb exposure dose. PICRUSt analysis based on 16S rRNA sequencing revealed Pb dose-dependent alterations in metabolism through the gut microbiota. These findings suggest that Pb exposure can not only disrupt the barrier by generating oxidative stress, but can also induce gut dysbiosis, colon tissue damage, and gut inflammation in a dose-dependent manner.
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Affiliation(s)
- Leilei Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China
| | - Yaqi Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Ruijie Yin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Hui Duan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Dingwu Qu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China; (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, 225004, China
| | - Arjan Narbad
- International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China; Gut Health and Microbiome Institute Strategic Programme, Quadram Institute Bioscience, Norwich, 16 NR4 7UQ, UK
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China; Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology & Business University, Beijing, 100048, PR China
| | - Qixiao Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China.
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14
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Abstract
Lead (Pb2+) is a non-essential metal with numerous industrial applications that have led to ts ubiquity in the environment. Thus, not only occupational-exposed individuals' health is compromised, but also that of the general population and in particular children. Notably, although the central nervous system is particularly susceptible to Pb2+, other systems are affected as well. The present study focuses on molecular mechanisms that underlie the effects that arise from the presence of Pb2+ in situ in the brain, and the possible toxic effects that follows. As the brain barriers represent the first target of systemic Pb2+, mechanisms of Pb2+ entry into the brain are discussed, followed by a detailed discussion on neurotoxic mechanisms, with special emphasis on theories of ion mimicry, mitochondrial dysfunction, redox imbalance, and neuroinflammation. Most importantly, the confluence and crosstalk between these events is combined into a cogent mechanism of toxicity, by intertwining recent and old evidences from humans, in vitro cell culture and experimental animals. Finally, pharmacological interventions, including chelators, antioxidants substances, anti-inflammatory drugs, or their combination are reviewed as integrated approaches to ameliorate Pb2+ harmful effects in both developing or adult organisms.
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Affiliation(s)
- Miriam B. Virgolini
- IFEC CONICET. IFEC-CONICET. Departamento de Farmacología, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Haya de la Torre y Medina Allende, Ciudad Universitaria, 5016, Córdoba, Argentina
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA and IM Sechenov First Moscow State Medical University (Sechenov University), 119146, Moscow, Russia
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15
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Wang Q, Zhao H, Zhu M, Gao L, Cheng N, Cao W. Spectroscopy characterization, theoretical study and antioxidant activities of the flavonoids-Pb(II) complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127919] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Szlacheta Z, Wąsik M, Machoń-Grecka A, Kasperczyk A, Dobrakowski M, Bellanti F, Szlacheta P, Kasperczyk S. Potential Antioxidant Activity of Calcium and Selected Oxidative Stress Markers in Lead- and Cadmium-Exposed Workers. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8035631. [PMID: 33082913 PMCID: PMC7558770 DOI: 10.1155/2020/8035631] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/25/2020] [Accepted: 09/15/2020] [Indexed: 02/08/2023]
Abstract
Occupational lead (Pb) and cadmium (Cd) exposure occurs during processing and casting of nonferrous metals such as zinc. In contrast to Pb and Cd, Ca is essential for living organisms due to its important role in a multitude of functions, from cell signaling to bone growth. Pb and Cd exposure affects calcium metabolism in various ways. The aim of this study was to investigate the blood levels of Pb, Cd, and Ca and the levels of selected oxidative stress biomarkers in workers exposed to Pb and Cd. Population groups included 264 male employees in a lead-zinc smelter. The study population was divided into two subgroups based on the median of Ca serum level (2.42 mmol/l): the low-Ca-level group (L-Ca group) and the high-Ca-level group (H-Ca group). Ca level was significantly higher in the H-Ca group than in the L-Ca group due to the study design (by 26%). The level of zinc protoporphyrin (ZPP) was significantly higher in the L-Ca group than in the H-Ca group by 13%, while the blood lead levels (PbB) were similar in the examined groups. The level of cadmium (CdB) was significantly higher in the L-Ca group than in the H-Ca group by 33%. From oxidative stress markers in serum, only the levels of malondialdehyde (MDA) and ceruloplasmin (CER) were significantly higher in the L-Ca group than in the H-Ca group, by 12% and 4%, respectively. The correlation analysis showed negative correlations between Ca level and the levels of PbB, ZPP, CdB, and MDA. The presented results indicate that Ca level modulates the serum concentration of Cd and has an impact on Pb-induced impairment of heme synthesis. The higher Ca levels may lead to a decrease in the concentration of lipid peroxidation products. Moreover, serum calcium level seems to be able to modify the level of acute-phase proteins. Obtained results suggest that higher Ca level may be useful in reducing Cd level in occupationally exposed workers.
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Affiliation(s)
| | - Marta Wąsik
- 2Department of Clinical Biochemistry and Laboratory Diagnostics, Institute of Medicine, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Anna Machoń-Grecka
- 3Department of Biochemistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Poland
| | - Aleksandra Kasperczyk
- 3Department of Biochemistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Poland
| | - Michał Dobrakowski
- 3Department of Biochemistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Poland
| | - Francesco Bellanti
- 4Department of Medical and Surgical Sciences, University of Foggia, Viale Pinto 1, 71122 Foggia, Italy
| | - Patryk Szlacheta
- 5Department of Toxicology and Health Protection, Faculty of Health Science in Bytom, Medical University of Silesia in Katowice, Bytom, Poland
| | - Sławomir Kasperczyk
- 3Department of Biochemistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Poland
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17
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Adhikari A, Darbar S, Das M, Mondal S, Sankar Bhattacharya S, Pal D, Kumar Pal S. Rationalization of a traditional liver medicine using systems biology approach and its evaluation in preclinical trial. Comput Biol Chem 2019; 84:107196. [PMID: 31881525 DOI: 10.1016/j.compbiolchem.2019.107196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/19/2019] [Accepted: 12/19/2019] [Indexed: 02/06/2023]
Abstract
'Bottom-up', i.e., molecule to medicine strategy for the discovery of new drugs takes enormous time and cost. In most of the cases, inherent toxicity and undesired side effects of the developed drug hinder its way beyond the early stages of development. In this regard, the systems pharmacology can play an excellent role by reducing the cost and time of drug development through rationalization and/or repurposing of traditional drugs with known side effects. In the present study, our aim was to develop an integrated systems biology method for the prediction of active ingredients of a traditional medicine and their potential targets inside the body. Further, we evaluated the predictive capacity of the developed method in a preclinical animal model. Here, we have prepared a formulation (SKP17LIV01) from an extract of eight medicinal plants traditionally used as liver medicine and identified the constituents using UHPLC-MS technique. Using systems biology approach, we have rationalized the components of the formulation for potential use in the treatment of heavy metal-induced hepatotoxicity. The active ingredients and potential therapeutic targets were also predicted. A detailed biochemical, histopathological and molecular study on the mice model of lead toxicity confirms the efficacy of the formulation as per prediction by the systems pharmacology approach. The study may open a new frontier for re-discovery of drugs that are already used in traditional medicine.
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Affiliation(s)
- Aniruddha Adhikari
- Department of Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector 3, Salt Lake, Kolkata 700106, India
| | - Soumendra Darbar
- Research and Development Division, Dey's Medical Stores (Mfg.) Ltd., 62, Bondel Road, Ballygunge, Kolkata 700019, India
| | - Monojit Das
- Department of Zoology, Uluberia College, University of Calcutta, Uluberia, Howrah 711315, India
| | - Susmita Mondal
- Department of Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector 3, Salt Lake, Kolkata 700106, India
| | | | - Debasish Pal
- Department of Zoology, Uluberia College, University of Calcutta, Uluberia, Howrah 711315, India
| | - Samir Kumar Pal
- Department of Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector 3, Salt Lake, Kolkata 700106, India; Department of Zoology, Uluberia College, University of Calcutta, Uluberia, Howrah 711315, India.
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18
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Wu Y, Chen Z, Darwish WS, Terada K, Chiba H, Hui SP. Choline and Ethanolamine Plasmalogens Prevent Lead-Induced Cytotoxicity and Lipid Oxidation in HepG2 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7716-7725. [PMID: 31131603 DOI: 10.1021/acs.jafc.9b02485] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Plasmalogens derived from dietary phospholipids are considered to be potential protectors against oxidation-related disorders, while lead (Pb) is an environmental contaminant worldwide and is known to induce oxidative stress. However, the protective and antilipid oxidative effects of individual plasmalogen species against Pb damage have received little attention. In this study, six plasmalogen species (with either choline or ethanolamine as the headgroup and p16:0/18:1, p16:0/18:2, or p16:0/20:5 as the side chains) were evaluated in human hepatoma cells. Plasmalogen species showed a remarkable recovery in cell viability as well as elimination of reactive oxygen species and suppressed the accumulation of phosphatidylcholine hydroperoxides (from 63.6 ± 1.8% to 80.3 ± 2.9%) and phosphatidylethanolamine hydroperoxides (from 25.7 ± 9.3% to 76.1 ± 3.7%). Moreover, plasmalogens significantly upregulated the gene expression levels of a series of antioxidant enzymes that are regulated via the Nrf-2-dependent pathway. This study suggested that choline and ethanolamine plasmalogens could prevent Pb-induced cytotoxicity and lipid oxidation in HepG2 cells.
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Affiliation(s)
- Yue Wu
- Faculty of Health Sciences , Hokkaido University , Kita-12, Nishi-5, Kita-ku , Sapporo 060-0812 , Japan
| | - Zhen Chen
- Faculty of Health Sciences , Hokkaido University , Kita-12, Nishi-5, Kita-ku , Sapporo 060-0812 , Japan
| | - Wageh S Darwish
- Faculty of Health Sciences , Hokkaido University , Kita-12, Nishi-5, Kita-ku , Sapporo 060-0812 , Japan
- Food Control Department, Faculty of Veterinary Medicine , Zagazig University , Zagazig 44519 , Egypt
| | - Koh Terada
- Faculty of Health Sciences , Hokkaido University , Kita-12, Nishi-5, Kita-ku , Sapporo 060-0812 , Japan
| | - Hitoshi Chiba
- Faculty of Health Sciences , Hokkaido University , Kita-12, Nishi-5, Kita-ku , Sapporo 060-0812 , Japan
- Department of Nutrition , Sapporo University of Health Sciences , Nakanuma Nishi-4-2-1-15, Higashi , Sapporo 007-0894 , Japan
| | - Shu-Ping Hui
- Faculty of Health Sciences , Hokkaido University , Kita-12, Nishi-5, Kita-ku , Sapporo 060-0812 , Japan
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19
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Antioxidant Effect of a Polyphenol-Rich Murtilla ( Ugni molinae Turcz.) Extract and Its Effect on the Regulation of Metabolism in Refrigerated Boar Sperm. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2917513. [PMID: 31281571 PMCID: PMC6589320 DOI: 10.1155/2019/2917513] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 03/22/2019] [Accepted: 04/28/2019] [Indexed: 02/02/2023]
Abstract
The production of reactive oxygen species (ROS) in boar spermatozoa increases in refrigeration; this can have an impact on sperm quality and fertilization capacity. We evaluated the effect of polyphenol-rich aqueous extract of murtilla (Ugni molinae Turcz) on boar sperm stored at 17°C in order to reduce oxidative stress and improve sperm quality in the long term. Five experiments were performed: first, characterization of the polyphenol content from five genotypes of murtilla; second, determination of the genotype with the best antioxidant effect (MT-Ex); third, the antioxidant capacity on O2− and lipid peroxidation; fourth, the influence of MT-Ex on motility, calcium movement, cAMP, and metabolic parameters; and fifth, analysis of long-term refrigeration. The average phenolic content was 344 ppm; gallic acid, catechin, quercetin, myricetin, and kaempferol were detected. All extracts evaluated presented a concentration-dependent antioxidant effect. MT-Ex reduces intracellular O2−/peroxides but low lipid peroxidation. MT-Ex in nonstimulated ROS conditions reduces sperm motility, mitochondrial membrane potential, cAMP, and ATP, but the succinate dehydrogenase activity remained normal; also, we observed a reduction in calcium movement in in vitro sperm capacitation. The long-term analyses showed that MT-Ex improved sperm motility decay and reduced membrane damage and ROS at 168 h. Based on this study, we propose MT-Ex as a supplement in semen extenders.
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20
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Amadi CN, Offor SJ, Frazzoli C, Orisakwe OE. Natural antidotes and management of metal toxicity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:18032-18052. [PMID: 31079302 DOI: 10.1007/s11356-019-05104-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
The global burden of heavy metal especially mercury, arsenic, lead, and cadmium toxicities remains a significant public health challenge. Developing nations are particularly at high risk and carry the highest burden of this hazard. Chelation therapy has been the mainstay for treatment of heavy metal poisoning where the chelating agent binds metal ions to form complex ring-like structures called "chelates" to enhance their elimination from the body. Metal chelators have some drawbacks such as redistribution of some heavy metals from other tissues to the brain thereby increasing its neurotoxicity, causing loss of essential metals such as copper and zinc as well as some serious adverse effects, e.g., hepatotoxicity. The use of natural antidotes, which are easily available, affordable, and with little or no side effects compared to the classic metal chelators, is the focus of this review and suggested as cheaper options for developing nations in the treatment of heavy metal poisoning.
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Affiliation(s)
- Cecilia Nwadiuto Amadi
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port-Harcourt, Port-Harcourt, Rivers State, Nigeria
| | - Samuel James Offor
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Uyo, Uyo, Akwa Ibom State, Nigeria
| | - Chiara Frazzoli
- Department of Cardiovascular and Endocrine-Metabolic Diseases, and Ageing, Istituto Superiore di Sanità (Italian National Institute of Health), Rome, Italy
| | - Orish Ebere Orisakwe
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port-Harcourt, Port-Harcourt, Rivers State, Nigeria.
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21
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Pires F, Geraldo VP, Antunes A, Marletta A, Oliveira ON, Raposo M. Effect of blue light irradiation on the stability of phospholipid molecules in the presence of epigallocatechin-3-gallate. Colloids Surf B Biointerfaces 2019; 177:50-57. [DOI: 10.1016/j.colsurfb.2019.01.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 01/05/2019] [Accepted: 01/22/2019] [Indexed: 11/29/2022]
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22
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Wang Q, Zhao L, Zhao H, Liu X, Gao L, Cheng N, Cao W. Complexation of luteolin with lead (II): Spectroscopy characterization and theoretical researches. J Inorg Biochem 2019; 193:25-30. [PMID: 30669063 DOI: 10.1016/j.jinorgbio.2019.01.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 11/30/2022]
Abstract
The interactions of (CH3COO)2Pb·3H2O (lead acetate trihydrate) with luteolin, 5,7,3',4'-tetrahydroxyflavone, were investigated in methanol solution. The spectroscopy (UV-Vis, FT-IR, HPLC-MS, 1H NMR) and elemental analysis were adopted to assess the interaction of luteolin and Pb(II). The results show that luteolin reacts with Pb(II) through the chelating sites of 4‑carbonyl and 5-hydroxy in two luteolin molecules. The structures, energies, CDA (charge decomposition analysis) and orbitals analysis of the ligand and complex have been analyzed according to quantum-chemical calculation, which is further proofed that luteolin molecule can effectively chelate Pb(II) by 5-hydroxyl-4-oxo chelating site. It is speculated that luteolin has a high potential of becoming a health care product to eliminate lead cation in the future.
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Affiliation(s)
- Qian Wang
- School of Chemical Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China
| | - Lingling Zhao
- School of Chemical Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China
| | - Haoan Zhao
- School of Chemical Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China
| | - Xinyan Liu
- School of Chemical Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China
| | - Liguo Gao
- College of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China
| | - Ni Cheng
- School of Food Science and Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China; Bee Product Research Center of Shaanxi Province, Xi'an 710065, China
| | - Wei Cao
- School of Food Science and Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China; Bee Product Research Center of Shaanxi Province, Xi'an 710065, China.
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23
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Ommati MM, Jamshidzadeh A, Heidari R, Sun Z, Zamiri MJ, Khodaei F, Mousapour S, Ahmadi F, Javanmard N, Shirazi Yeganeh B. Carnosine and Histidine Supplementation Blunt Lead-Induced Reproductive Toxicity through Antioxidative and Mitochondria-Dependent Mechanisms. Biol Trace Elem Res 2019; 187:151-162. [PMID: 29767280 DOI: 10.1007/s12011-018-1358-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 04/18/2018] [Indexed: 12/19/2022]
Abstract
Lead (Pb)-induced reproductive toxicity is a well-characterized adverse effect associated with this heavy metal. It has been found that Pb exposure is associated with altered spermatogenesis, increased testicular degeneration, and pathological sperm alterations. On the other hand, it has been reported that Pb-induced reproductive toxicity is associated with increased reactive oxygen species (ROS) formation and diminished antioxidant capacity in the reproductive system. Hence, administration of antioxidants as protective agents might be of value against Pb-induced reproductive toxicity. This study was designed to investigate whether carnosine (CAR) and histidine (HIS) supplementation would mitigate the Pb-induced reproductive toxicity in male rats. Animals received Pb (20 mg/kg/day, oral, 14 consecutive days) alone or in combination with CAR (250 and 500 mg/kg/day, oral, 14 consecutive days) or HIS (250 and 500 mg/kg/day, oral, 14 consecutive days). Pb toxicity was evident in the reproductive system by a significant increase in tissue markers of oxidative stress along with severe histopathological changes, seminal tubule damage, tubular desquamation, low spermatogenesis index, poor sperm parameters, and impaired sperm mitochondrial function. It was found that CAR and HIS supplementation blunted the Pb-induced oxidative stress and mitochondrial dysfunction in the rat reproductive system. Thereby, antioxidative and mitochondria-protective properties serve as primary mechanisms for CAR and HIS against Pb-induced reproductive toxicity.
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Affiliation(s)
- Mohammad Mehdi Ommati
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Medicine, Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Akram Jamshidzadeh
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Heidari
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Zilong Sun
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Medicine, Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Mohammad Javad Zamiri
- Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
| | - Forouzan Khodaei
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Mousapour
- Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran
| | - Fatemeh Ahmadi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nafiseh Javanmard
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Babak Shirazi Yeganeh
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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24
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Pires F, Geraldo VP, Antunes A, Marletta A, Oliveira ON, Raposo M. On the role of epigallocatechin-3-gallate in protecting phospholipid molecules against UV irradiation. Colloids Surf B Biointerfaces 2019; 173:312-319. [DOI: 10.1016/j.colsurfb.2018.09.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/12/2018] [Accepted: 09/25/2018] [Indexed: 02/02/2023]
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25
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Zhai Q, Yang L, Zhao J, Zhang H, Tian F, Chen W. Protective Effects of Dietary Supplements Containing Probiotics, Micronutrients, and Plant Extracts Against Lead Toxicity in Mice. Front Microbiol 2018; 9:2134. [PMID: 30254621 PMCID: PMC6141689 DOI: 10.3389/fmicb.2018.02134] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 08/21/2018] [Indexed: 11/13/2022] Open
Abstract
Lead (Pb) intoxication is a serious food safety issue, and the development of relevant dietary strategies is an area of ongoing research. In this study, two different dietary supplements were designed and evaluated for their effects against Pb toxicity in mice. Dietary supplement A contained grape seed extract, tea polyphenols and Lactobacillus plantarum CCFM8661, and dietary supplement B contained vitamin C, calcium carbonate, zinc acetate, and L. plantarum CCFM8661. The results showed that both dietary supplements could effectively decrease Pb levels, protect aminolevulinic acid dehydratase, superoxide dismutase and catalase activities and recover glutathione, zinc protoporphyrin and malondialdehyde levels in tissues and blood of mice. A step-through passive avoidance task confirmed that the dietary supplements could recover the learning and memory capacities of Pb-exposed mice. The protective effects of both dietary supplements to alleviate oxidative stress and cognitive impairments were superior to the chelator treatment. Administration of the dietary supplements during Pb exposure offered more significant protection than administration after Pb exposure. Animal safety evaluation also indicated that these dietary supplements barely induced side effects in the mice. This study provides evidence that dietary supplements containing probiotics, micronutrients, and plant extracts can be considered a new dietary strategy against Pb toxicity.
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Affiliation(s)
- Qixiao Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Research Laboratory for Probiotics, Jiangnan University, Wuxi, China
| | - Liu Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Research Laboratory for Probiotics, Jiangnan University, Wuxi, China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China.,Beijing Innovation Center of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, China
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26
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Xia J, Fang Y, Shi Y, Shen X, Wu J, Xie M, Li P, Pei F, Hu Q. Effect of food matrices on the in vitro bioavailability and oxidative damage in PC12 cells of lead. Food Chem 2018; 266:397-404. [PMID: 30381204 DOI: 10.1016/j.foodchem.2018.06.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 01/29/2023]
Abstract
The bioavailability and oxidative damage toxicity of lead (Pb) in seven food matrices, including rice, milk, tomato, garlic, apple, kelp and pork, were determined using an in vitro digestion/Caco-2 cell model and a rat pheochromocytoma (PC12) oxidative damage model. Results showed that Pb bioaccessibility and bioavailability in the apple and kelp groups were significantly lower than other food matrix groups, with corresponding values of 11.05-28.31% and 1.57-8.81%, respectively. Oxidative damage assays showed that digestion products of apple polyphenol extract, which was selected from seven food matrices, could increase the oxidation resistance and the levels of glutathione (GSH), superoxide dismutase (SOD), catalase (CAT) and acetyl cholinesterase (AChE) by 32.23%, 39.02%, 27.14% and 30.90%, respectively. Additionally, malondialdehyde (MDA) and reactive oxygen species (ROS) levels could be decreased by 59.66% and 40.21%, respectively. In conclusion, phenolics were an important food matrix that could decrease the bioavailability and oxidative damage of Pb.
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Affiliation(s)
- Ji Xia
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Yong Fang
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China.
| | - Yi Shi
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Xinchun Shen
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Jian Wu
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Minhao Xie
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Peng Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Fei Pei
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China
| | - Qiuhui Hu
- College of Food Science and Engineering, Nanjing University of Finance and Economics/The Jiangsu Province Center of Cooperative Innovation for Modern Grain Circulation and Security, Nanjing 210023, People's Republic of China; College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
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27
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Pharmacological values and therapeutic properties of black tea (Camellia sinensis): A comprehensive overview. Biomed Pharmacother 2018; 100:521-531. [PMID: 29482046 DOI: 10.1016/j.biopha.2018.02.048] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 02/10/2018] [Accepted: 02/13/2018] [Indexed: 01/06/2023] Open
Abstract
Medicinal plants are essential parts of traditional medicine due to their phytochemical constituents having pharmacological values and therapeutic applications. Black tea have thousands of various biological compounds such as flavonoids (Thearubigins (TRs) and theaflavins (TFs) and catechins), amino acids (L.theanine), vitamins (A, C, K), phenolic acids (caffeic acid (CA), gallic acid (GA), chlorogenic acids (CGA) and cauramic acid), lipids, proteins, volatile compounds carbohydrates, β-carotene and fluoride that illustrated many promising pharmacological effects regarded as growth promoter, cardioprotector, potent cholesterol-lowering effect, antioxidant and antimicrobial, etc inhuman. Although there is an exponential growth in molecular evidence of cholesterol-lowering and antioxidant effect in human, there is still a lack of information of the pharmacological effects of black tea. To fill this information gap, therefore, this review article underscores broadening the new insight pertaining to black tea that could be used as safe food additive. This article also illuminates the interesting role of black tea as an herbal medicine that is the future demand to get rid of synthetic health promoters in the human health practice. Moreover, this information would be useful in terms of the low-cost practice of natural medicines with no residual effects, and a natural protection of the human being. In addition, further studies at a molecular level are needed to reveal its mechanism of action particularly for the hypocholesterolemic effect of black tea to overcome the heart-related diseases, fewer side effects and being a natural safeguard of human health.
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28
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Protective role of epigallocatechin-3-gallate on arsenic induced testicular toxicity in Swiss albino mice. Biomed Pharmacother 2017; 96:685-694. [PMID: 29040955 DOI: 10.1016/j.biopha.2017.09.151] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 09/09/2017] [Accepted: 09/12/2017] [Indexed: 01/09/2023] Open
Abstract
Arsenic, often referred to as the king of poisons is carcinogenic in humans and animals. It affects multiorgan systems including reproduction. The present study was undertaken to explore the protective role of green tea compound, epigallocatechin-3-gallate (EGCG) on arsenic induced testicular toxicity in Swiss albino mice. Thirty two adult male mice were randomly assigned to four groups (n=8). Group I served as control without test chemical. The group II received arsenic (200ppm) through drinking water, group III received only EGCG (20mg/kgb.wt., intraperitoneally, alternate days) and group IV was administered arsenic+EGCG for 40days. Factorial experimental design was employed to assess the treatment effect. The EGCG restored arsenic induced decrements in epididymal sperm concentration, kinematic attributes (total motility, rapid, progressive motile, fast progressive, VSL, VAP, VCL, BCF, LIN, WOB, STR and Type A), structutal membrane integrity, functional membrane integrity and mitochondrial membrane potential. As evidenced by the histoarchitectural studies, the EGCG reversed the deleterious effects of arsenic on testicular malondialdehyde (p<0.05) levels, reduced glutathione, antioxidative enzymes and spermatogenesis. Overall, the results suggest that EGCG reduces the testicular oxidative stress induced by arsenic poisoning and thereby protect the reproductive system.
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29
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Liu X, Su P, Meng S, Aschner M, Cao Y, Luo W, Zheng G, Liu M. Role of matrix metalloproteinase-2/9 (MMP2/9) in lead-induced changes in an in vitro blood-brain barrier model. Int J Biol Sci 2017; 13:1351-1360. [PMID: 29209140 PMCID: PMC5715519 DOI: 10.7150/ijbs.20670] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/16/2017] [Indexed: 12/22/2022] Open
Abstract
Lead (Pb) is a well-known neurotoxicant and a risk factor for neurologic disorders. The blood brain barrier (BBB) plays an important role in the maintenance of optimal brain function. BBB is a target of Pb, and studies have shown that Pb induced barrier loss and decreased the expression of tight junction proteins, but the detailed mechanisms are not fully understood. Matrix metalloproteinases (MMPs) are important components of extracellular matrix proteasome and can affect the remodeling and degradation of tight junction (TJ). The role of MMP-2/9 in Pb-induced damage of BBB is not known. In our study, we used an in vitro BBB model by co-culturing human umbilical vascular endothelial cells (ECV304 cells) with rat glioma cells (C6 cells), and detected the expression of related TJ proteins and MMP-2/9. Our results showed that Pb increased the permeability of the in vitro BBB model, and stimulating C6 cells with Pb could decrease the protein level of ZO-1 (zonula occludens-1) and occludin in ECV304 cells. Pb could increase the mRNA and protein level of MMP-2/9 in C6 cells, and inhibition of MMP-2/9 by SB-3CT could partially alleviate Pb-induced down-regulation of TJ proteins in ECV304 cells and Pb-induced barrier damage in the in vitro BBB model. Our research established potential therapeutic targets for modulating and preserving optimal BBB function.
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Affiliation(s)
- Xinqin Liu
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
| | - Peng Su
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
| | - Shanshan Meng
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Yupeng Cao
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
| | - Wenjing Luo
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
| | - Gang Zheng
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
| | - Mingchao Liu
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, 710032, China
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30
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Liu Z, Wang H, Zhang W, Yuan Z, Yuan H, Liu X, Zhang M, Guo X, Guan W. Lead induces Siberian tiger fibroblast apoptosis by interfering with intracellular homeostasis. Drug Chem Toxicol 2017. [DOI: 10.1080/01480545.2017.1337125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Zheng Liu
- College of Food Science and Engineering, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Hui Wang
- College of Food Science and Engineering, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Wenxiu Zhang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ziao Yuan
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongyi Yuan
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xueting Liu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Minghai Zhang
- College of Wildlife Resources, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Xuesong Guo
- College of Food Science and Engineering, Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Weijun Guan
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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31
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Zhang T, Mu Y, Yang M, Al Maruf A, Li P, Li C, Dai S, Lu J, Dong Q. (+)-Catechin prevents methylglyoxal-induced mitochondrial dysfunction and apoptosis in EA.hy926 cells. Arch Physiol Biochem 2017; 123:121-127. [PMID: 28005432 DOI: 10.1080/13813455.2016.1263868] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To investigate whether (+)-catechin, a strong antioxidant, can prevent methylglyoxal (MGO)-induced cytotoxicity and its mechanism. METHODS Cytotoxicity, apoptosis, reactive oxygen species (ROS) generation, hydrogen peroxide (H2O2) formation, mitochondrial membrane potential (MMP) and mitochondrial morphology were measured in EA.hy926 cells. RESULT MGO (4 mM)-induced cytotoxicity was markedly inhibited by (+)-catechin (0.1-4 mM) in 24 h. 1 mM MGO-induced apoptotic cell death (44.7%) was significantly inhibited by 4 mM (+)-catechin (to 24.4%), 1 mM aminoguanidine (AG) (to 28.8%) or 4 mM N-acetylcysteine (NAC) (to 24.3%). (+)-Catechin (4 mM) or AG (4 mM) can inhibit the decrease of MMP induced by MGO (2-8 mM) in 3 h. (+)-Catechin (4 mM) or AG (4 mM) can inhibit MGO (4 mM)-induced mitochondrial swelling in 3 h. However, MGO (4 mM)-induced ROS and H2O2 generation was not prevented by (+)-catechin (4 mM). CONCLUSIONS (+)-Catechin prevents MGO-induced cytotoxicity in EA.Hy926 cells through inhibiting apoptosis and mitochondrial damage.
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Affiliation(s)
- Tianyu Zhang
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | - Yingying Mu
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | - Mingqi Yang
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | | | - Panpan Li
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | - Chao Li
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | - Shaohua Dai
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | - Jiangyi Lu
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
| | - Qiang Dong
- a College of Veterinary Medicine, Northwest A&F University , Yangling , Shaanxi , China and
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32
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Neuroprotective Efficacy of Mitochondrial Antioxidant MitoQ in Suppressing Peroxynitrite-Mediated Mitochondrial Dysfunction Inflicted by Lead Toxicity in the Rat Brain. Neurotox Res 2017; 31:358-372. [PMID: 28050775 DOI: 10.1007/s12640-016-9692-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 12/05/2016] [Accepted: 12/19/2016] [Indexed: 10/20/2022]
Abstract
Lead (Pb) is one of the most pollutant metals that accumulate in the brain mitochondria disrupting mitochondrial structure and function. Though oxidative stress mediated by reactive oxygen species remains the most accepted mechanism of Pb neurotoxicity, some reports suggest the involvement of nitric oxide (•NO) and reactive nitrogen species in Pb-induced neurotoxicity. But the impact of Pb neurotoxicity on mitochondrial respiratory enzyme complexes remains unknown with no relevant report highlighting the involvement of peroxynitrite (ONOO-) in it. Herein, we investigated these effects in in vivo rat model by oral application of MitoQ, a known mitochondria-specific antioxidant with ONOO- scavenging activity. Interestingly, MitoQ efficiently alleviated ONOO--mediated mitochondrial complexes II, III and IV inhibition, increased mitochondrial ATP production and restored mitochondrial membrane potential. MitoQ lowered enhanced caspases 3 and 9 activities upon Pb exposure and also suppressed synaptosomal lipid peroxidation and protein oxidation accompanied by diminution of nitrite production and protein-bound 3-nitrotyrosine. To ascertain our in vivo findings on mitochondrial dysfunction, we carried out similar experiments in the presence of different antioxidants and free radical scavengers in the in vitro SHSY5Y cell line model. MitoQ provided better protection compared to mercaptoethylguanidine, N-nitro-L-arginine methyl ester and superoxide dismutase suggesting the predominant involvement of ONOO- compared to •NO and O2•-. However, dimethylsulphoxide and catalase failed to provide protection signifying the noninvolvement of •OH and H2O2 in the process. The better protection provided by MitoQ in SHSY5Y cells can be attributed to the fact that MitoQ targets mitochondria whereas mercaptoethylguanidine, N-nitro-L-arginine methyl ester and superoxide dismutase are known to target mainly cytoplasm and not mitochondria. Taken together the results from the present study clearly brings out the potential of MitoQ against ONOO--induced toxicity upon Pb exposure indicating its therapeutic potential in metal toxicity.
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33
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Qiu YR, Zhang RF, Zhang SL, Cheng S, Li QL, Ma CL. Novel organotin(iv) complexes derived from 4-fluorophenyl-selenoacetic acid: synthesis, characterization and in vitro cytostatic activity evaluation. NEW J CHEM 2017. [DOI: 10.1039/c7nj00500h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A cluster of novel organotin(iv) complexes were designed, synthesized, and characterized by elemental analysis, FT-IR, and NMR (1H, 13C, and 119Sn) spectroscopy as well as single-crystal X-ray diffraction.
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Affiliation(s)
- Ya-Ru Qiu
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Ru-Fen Zhang
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Shao-Liang Zhang
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Shuang Cheng
- School of Agriculture
- Liaocheng University
- Liaocheng
- China
| | - Qian-Li Li
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Chun-Lin Ma
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
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34
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Rameshrad M, Razavi BM, Hosseinzadeh H. Protective effects of green tea and its main constituents against natural and chemical toxins: A comprehensive review. Food Chem Toxicol 2016; 100:115-137. [PMID: 27915048 DOI: 10.1016/j.fct.2016.11.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 11/24/2016] [Accepted: 11/30/2016] [Indexed: 01/26/2023]
Abstract
Toxins are natural or chemical poisonous substances with severe side effects on health. Humans are generally exposed by widespread toxic contaminations via air, soil, water, food, fruits and vegetables. Determining a critical antidote agent with extensive effects on different toxins is an ultimate goal for all toxicologists. Traditional medicine is currently perceived as a safe and natural approach against toxins. In this regard, we focused on the protective effects of green tea (Camellia sinensis) and its main components such as catechin, epicatechin, epicatechin gallate, gallocatechin, epigallocatechin and epigallocatechin gallate as a principal source of antioxidants against both natural and chemical toxins. This literate review demonstrates that protective effects of green tea and its constituents were mainly attributed to their anti-oxidative, radical scavenging, chelating, anti-apoptotic properties and modulating inflammatory responses. Although, some studies reveal they have protective effects by increasing toxin metabolism and neutralizing PLA2, proteases, hyaluronidase and l-amino acid oxidase enzymes.
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Affiliation(s)
- Maryam Rameshrad
- Pharmaceutical Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Bibi Marjan Razavi
- Targeted Drug Delivery Research Center, Department of Pharmacodynamy and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hossein Hosseinzadeh
- Pharmaceutical Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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35
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Mehdipour M, Daghigh Kia H, Najafi A, Vaseghi Dodaran H, García-Álvarez O. Effect of green tea (Camellia sinensis) extract and pre-freezing equilibration time on the post-thawing quality of ram semen cryopreserved in a soybean lecithin-based extender. Cryobiology 2016; 73:297-303. [PMID: 28314435 DOI: 10.1016/j.cryobiol.2016.10.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 11/22/2022]
Abstract
The aim of this study was to determine the effect of Camellia sinensis extract as antioxidant supplement and pre-freezing equilibration times in a soybean lecithin extender for freezing ram semen. In this study, a total of 20 ejaculates were collected from four Ghezel rams and diluted with extenders (1.5% soybean lecithin, 7% glycerol) containing no supplements (control) and Camellia sinensis extract (5, 10, and 15 mg/L) and cryopreserved, immediately after thermal equilibrium was reached at 5 °C (0 h), or 4 h after equilibration. Sperm motility characteristics, membrane integrity, abnormal morphology, mitochondria activity, apoptotic status, MDA and antioxidant activities (GPx, SOD and total antioxidant capacity (TAC)) were evaluated following freeze-thawing. Camellia sinensis extract at level 10 mg/L led to the highest total and progressive motilities percentages, in comparison to other treatments (P < 0.05). Our results showed that Camellia sinensis extract at level of 5 and 10 mg/L led to higher plasma membrane integrity, mitochondria activity and Total antioxidant capacity (TAC) in comparison to the level of 15 mg/L and control group (P < 0.05). Camellia sinensis extract at 10 mg/L level produced the highest percentage of live spermatozoa and the lowest apoptotic spermatozoa in comparison to all treatments (P < 0.05). In addition, level of MDA formation significantly decreased at this concentration, 10 mg/L, compared to all treatments (P < 0.05). No differences (P > 0.05) were observed between equilibration times (0 h vs. 4 h) for sperm samples incubated with or without different concentrations of Camellia sinensis extract. In conclusion, addition of Camellia sinensis extract at level of 10 mg/L can improve post-thawing quality of ram semen cryopreserved in a soybean lecithin extender. However, further research is needed to standardize the process of Camellia sinensis extraction and specially for identifying which compounds are responsible of its beneficial effect on ram sperm cryopreservation.
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Affiliation(s)
- Mahdieh Mehdipour
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran
| | - Hossein Daghigh Kia
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Abouzar Najafi
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran
| | | | - Olga García-Álvarez
- Biomedical Center, Medical Faculty in Pilsen, Charles University in Prague, Alej, Svobody 1655/76, 323 00 Pilsen, Czechia
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36
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Bloise A, Barca D, Gualtieri AF, Pollastri S, Belluso E. Trace elements in hazardous mineral fibres. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 216:314-323. [PMID: 27289526 DOI: 10.1016/j.envpol.2016.06.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/01/2016] [Accepted: 06/03/2016] [Indexed: 06/06/2023]
Abstract
Both occupational and environmental exposure to asbestos-mineral fibres can be associated with lung diseases. The pathogenic effects are related to the dimension, biopersistence and chemical composition of the fibres. In addition to the major mineral elements, mineral fibres contain trace elements and their content may play a role in fibre toxicity. To shed light on the role of trace elements in asbestos carcinogenesis, knowledge on their concentration in asbestos-mineral fibres is mandatory. It is possible that trace elements play a synergetic factor in the pathogenesis of diseases caused by the inhalation of mineral fibres. In this paper, the concentration levels of trace elements from three chrysotile samples, four amphibole asbestos samples (UICC amosite, UICC anthophyllite, UICC crocidolite and tremolite) and fibrous erionite from Jersey, Nevada (USA) were determined using inductively coupled plasma mass spectrometry (ICP-MS). For all samples, the following trace elements were measured: Li, Be, Sc, V, Cr, Mn, Co, Ni, Cu, Zn, As, Rb, Sr, Y, Sb, Cs, Ba, La, Pb, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, U. Their distribution in the various mineral species is thoroughly discussed. The obtained results indicate that the amount of trace metals such as Mn, Cr, Co, Ni, Cu and Zn is higher in anthophyllite and chrysotile samples, whereas the amount of rare earth elements (REE) is higher in erionite and tremolite samples. The results of this work can be useful to the pathologists and biochemists who use asbestos minerals and fibrous erionite in-vitro studies as positive cyto- and geno-toxic standard references.
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Affiliation(s)
- Andrea Bloise
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036, Arcavacata di Rende, CS, Italy.
| | - Donatella Barca
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036, Arcavacata di Rende, CS, Italy
| | | | - Simone Pollastri
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, I-41125, Modena, Italy
| | - Elena Belluso
- Department of Earth Sciences, University of Torino, Torino, 10125, Italy; Interdepartmental Center for Studies on Asbestos and Other Toxic Particulates "G. Scansetti", Torino, Italy
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Kim JH, Lee SJ, Kim SY, Choi G, Lee JJ, Kim HJ, Kim S, Park J, Moon HB, Choi K, Kim S, Choi SR. Association of food consumption during pregnancy with mercury and lead levels in cord blood. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 563-564:118-124. [PMID: 27135573 DOI: 10.1016/j.scitotenv.2016.04.082] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/06/2016] [Accepted: 04/11/2016] [Indexed: 06/05/2023]
Abstract
In utero exposure to mercury and lead has been linked to various adverse health effects related to growth and development. However, there was no evidence on the relationship between food consumption during pregnancy and mercury or lead level in cord blood. Therefore we measured mercury and lead levels in bloods, urines, and cord bloods obtained from 302 pregnant women and estimated relationships between food consumption during pregnancy and mercury or lead level in cord blood to identify perinatal mercury and lead exposures originated from foods during pregnancy. Relationship between food consumption and mercury or lead level was estimated using a generalized linear model after adjustment for body mass index (BMI), delivery experience, income, recruitment year, and other dietary factors for mercury and age, BMI, cesarean section, delivery experience, recruitment year, and other dietary factors for lead. Fish consumption was positively associated with mercury level in cord blood (p=0.0135), while cereal and vegetable consumptions were positively associated with lead level in cord blood (p=0.0517 for cereal and p=0.0504 for vegetable). Furthermore, tea consumption restrained increase of lead level in cord blood (p=0.0014). Our findings support that mercury or lead exposure in Korean pregnant women may come from frequent fish and cereal or vegetable consumption while tea consumption may decrease lead exposure in pregnant women. Therefore, careful intervention through food consumption should be considered.
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Affiliation(s)
- Jin Hee Kim
- Department of Integrative Bioscience & Biotechnology, Sejong University, Seoul, Republic of Korea
| | - Su Jin Lee
- Department of Environmental Health, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Su Young Kim
- Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Gyuyeon Choi
- College of Medicine, Soonchunhyang University, Seoul, Republic of Korea
| | - Jeong Jae Lee
- College of Medicine, Soonchunhyang University, Seoul, Republic of Korea
| | - Hai-Joong Kim
- College of Medicine, Korea University, Seoul, Republic of Korea
| | - Sungjoo Kim
- College of Medicine, Hallym University, Seoul, Republic of Korea
| | - Jeongim Park
- College of Natural Sciences, Soonchunhyang University, Asan, Republic of Korea
| | - Hyo-Bang Moon
- Department of Marine Sciences and Convergent Technology, Hanyang University, Ansan, Republic of Korea
| | - Kyungho Choi
- Department of Environmental Health, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Sungkyoon Kim
- Department of Environmental Health, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Soo Ran Choi
- College of Medicine, Inha University, Incheon, Republic of Korea.
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El-Sayed IH, Lotfy M, El-Khawaga OAY, Nasif WA, El-Shahat M. Prominent free radicals scavenging activity of tannic acid in lead-induced oxidative stress in experimental mice. Toxicol Ind Health 2016; 22:157-63. [PMID: 16786837 DOI: 10.1191/0748233706th256oa] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Lead (Pb) is known to disrupt the pro-oxidant/antioxidant balance of tissues leading to biochemical and physiological dysfunction. The present study was designed to investigate the effect of tannic acid on some biochemical parameters in Swiss albino mice exposed to lead acetate. The levels of thiobarbaturic acid-reactive substances (TBARS) as an index of lipid peroxidation, nitric oxide (NO), and serum lead (Pb) were significantly increased following intragastric administration of 50 mmole lead acetate/kg body weight three times a week, every other day for three weeks, compared to the corresponding control values. On the other hand, the activities of superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione-S-transferase (GST) and glutathione content (GSH) and serum copper (Cu) and zinc (Zn) were significantly diminished relative to the control values. The administration of 20 mg tannic acid/kg body weight three times a week every other day for three weeks, enhanced the endogenous antioxidant capacity of the cells by increasing the activities of antioxidant enzymes (SOD, CAT, GSH-R, GST), GSH content and serum Cu and Zn levels. Compared to the lead acetate-exposed group, the levels of TBARS, NO and Pb were decreased in the lead acetate exposed group treated with tannic acid. These results afford evidence supporting the hypothesis that lead induces oxidative stress in hepatic cells. Moreover, tannic acid has a potential in sustaining global antioxidant effect in hepatic cells leading to decreased oxidative stress and cellular damage initiated through free radical production by lead acetate.
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Affiliation(s)
- Ibrahim H El-Sayed
- Department of Molecular and Cellular Biology, Genetic Engineering and Biotechnology Research Institute, Minufiya University, Sadat City, Minufiya, Egypt
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Cai T, Luo W, Ruan D, Wu YJ, Fox DA, Chen J. The History, Status, Gaps, and Future Directions of Neurotoxicology in China. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:722-732. [PMID: 26824332 PMCID: PMC4892912 DOI: 10.1289/ehp.1409566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 09/25/2015] [Accepted: 01/15/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Rapid economic development in China has produced serious ecological, environmental, and health problems. Neurotoxicity has been recognized as a major public health problem. The Chinese government, research institutes, and scientists conducted extensive studies concerning the source, characteristics, and mechanisms of neurotoxicants. OBJECTIVES This paper presents, for the first time, a comprehensive history and review of major sources of neurotoxicants, national bodies/legislation engaged, and major neurotoxicology research in China. METHODS Peer-reviewed research and pollution studies by Chinese scientists from 1991 to 2015 were examined. PubMed, Web of Science and Chinese National Knowledge Infrastructure (CNKI) were the major search tools. RESULTS The central problem is an increased exposure to neurotoxicants from air and water, food contamination, e-waste recycling, and manufacturing of household products. China formulated an institutional framework and standards system for management of major neurotoxicants. Basic and applied research was initiated, and international cooperation was achieved. The annual number of peer-reviewed neurotoxicology papers from Chinese authors increased almost 30-fold since 2001. CONCLUSIONS Despite extensive efforts, neurotoxicity remains a significant public health problem. This provides great challenges and opportunities. We identified 10 significant areas that require major educational, environmental, governmental, and research efforts, as well as attention to public awareness. For example, there is a need to increase efforts to utilize new in vivo and in vitro models, determine the potential neurotoxicity and mechanisms involved in newly emerging pollutants, and examine the effects and mechanisms of mixtures. In the future, we anticipate working with scientists worldwide to accomplish these goals and eliminate, prevent and treat neurotoxicity. CITATION Cai T, Luo W, Ruan D, Wu YJ, Fox DA, Chen J. 2016. The history, status, gaps, and future directions of neurotoxicology in China. Environ Health Perspect 124:722-732; http://dx.doi.org/10.1289/ehp.1409566.
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Affiliation(s)
- Tongjian Cai
- Department of Occupational and Environmental Health, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi’an, Shaanxi, China
- Department of Epidemiology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Wenjing Luo
- Department of Occupational and Environmental Health, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Diyun Ruan
- Neurotoxicology Lab, School of Life Science, University of Science and Technology of China, Hefei, Anhui, China
| | - Yi-Jun Wu
- Laboratory of Molecular Toxicology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Donald A. Fox
- College of Optometry,
- Department of Biology and Biochemistry,
- Department of Pharmacological and Pharmaceutical Sciences, and
- Department of Health and Human Performance, University of Houston, Houston, Texas, USA
| | - Jingyuan Chen
- Department of Occupational and Environmental Health, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi’an, Shaanxi, China
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Oliveira MRD, Nabavi SF, Daglia M, Rastrelli L, Nabavi SM. Epigallocatechin gallate and mitochondria-A story of life and death. Pharmacol Res 2015; 104:70-85. [PMID: 26731017 DOI: 10.1016/j.phrs.2015.12.027] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/20/2015] [Accepted: 12/23/2015] [Indexed: 01/05/2023]
Abstract
Epigallocatechin gallate (EGCG) is a flavonoid belonging to the chemical class of falvan-3-ols (catechins) esterified with gallic acid. It is the main catechin found in green tea (Camellia sinensis L.) accounting for about 50% of its total polyphenols. Extensive research performed in recent years has revealed that green tea demonstrates a wide range of positive biological activities against serious chronic diseases such as cardiovascular and neurodegenerative pathologies, cancer, metabolic syndrome and type 2 diabetes. These protective properties can be traced back to the potent antioxidant and anti-inflammatory activities of EGCG. Recent studies have suggested that it may exert its beneficial effects by modulating mitochondrial functions impacting mitochondrial biogenesis, bioenergetic control (ATP production and anabolism), alteration of the cell cycle, and mitochondria-related apoptosis. This review evaluates recent evidence on the ability of EGCG to exert critical influence on the above mentioned pathways.
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Affiliation(s)
- Marcos Roberto de Oliveira
- Department of Chemistry, ICET, Federal University of Mato Grosso (UFMT), Av. Fernando Corrêa da Costa, 2367, CEP 78060-900 Cuiabá, MT, Brazil.
| | - Seyed Fazel Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Maria Daglia
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Italy
| | - Luca Rastrelli
- Dipartimento di Farmacia, University of Salerno, via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Zhang H, Liu Y, Liu R, Liu C, Chen Y. Molecular Mechanism of Lead-Induced Superoxide Dismutase Inactivation in Zebrafish Livers. J Phys Chem B 2014; 118:14820-6. [PMID: 25494975 DOI: 10.1021/jp511056t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Lead toxicity has been proved to be related with inducing oxidative stress of organisms and causing inactivation of antioxidant enzymes, the mechanism of which remains unknown. This study investigated and compared superoxide dismutase (Cu/Zn SOD) activity inhibited in lead-treated zebrafish livers and explored the mechanism of SOD inactivation by lead at the molecular level using multiple spectroscopic techniques, isothermal titration calorimetric (ITC) measurement, molecular docking study and ICP-AES detection. Results showed lead exposure decreased SOD activities in zebrafish livers due to direct interactions between lead and SOD, resulting in conformational and functional changes of the enzyme. To be specific, Studies at the molecular level indicated that lead bound into the active site channel of SOD, hindered the path of the catalytic substrate (O(2)(-•)), damaged its skeleton conformation and secondary structure, and interacted with the enzymatically related residue (Arg 141) through electrostatic forces (ΔH < 0, ΔS > 0), and caused the release of Cu(2+) and Zn(2+) from the catalytic pocket of SOD. This work shows a correlation between results on organismal and molecular levels, and obtains a possible model hypothesizing mechanisms of lead toxicity using in vitro experiments instead of in vivo ones.
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Affiliation(s)
- Hao Zhang
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University , 27# Shanda South Road, Jinan, Shandong Province 250100, P. R. China
| | - Yang Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University , 27# Shanda South Road, Jinan, Shandong Province 250100, P. R. China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University , 27# Shanda South Road, Jinan, Shandong Province 250100, P. R. China
| | - Chunguang Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University , 27# Shanda South Road, Jinan, Shandong Province 250100, P. R. China
| | - Yadong Chen
- Laboratory of Molecular Design and Drug Discovery, School of Basic Science, China Pharmaceutical University , 24 Tongjiaxiang, Nanjing 210009, China
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Zhou F, Chen Y, Fan G, Feng C, Du G, Zhu G, Li Y, Jiao H, Guan L, Wang Z. Lead-induced iron overload and attenuated effects of ferroportin 1 overexpression in PC12 cells. Toxicol In Vitro 2014; 28:1339-48. [DOI: 10.1016/j.tiv.2014.07.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 05/12/2014] [Accepted: 07/11/2014] [Indexed: 01/21/2023]
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Lead Intoxication Synergies of the Ethanol-Induced Toxic Responses in Neuronal Cells--PC12. Mol Neurobiol 2014; 52:1504-1520. [PMID: 25367877 DOI: 10.1007/s12035-014-8928-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 10/07/2014] [Indexed: 01/05/2023]
Abstract
Lead (Pb)-induced neurodegeneration and its link with widespread neurobehavioral changes are well documented. Experimental evidences suggest that ethanol could enhance the absorption of metals in the body, and alcohol consumption may increase the susceptibility to metal intoxication in the brain. However, the underlying mechanism of ethanol action in affecting metal toxicity in brain cells is poorly understood. Thus, an attempt was made to investigate the modulatory effect of ethanol on Pb intoxication in PC12 cells, a rat pheochromocytoma. Cells were co-exposed to biological safe doses of Pb (10 μM) and ethanol (200 mM), and data were compared to the response of cells which received independent exposure to these chemicals at similar doses. Ethanol (200 mM) exposure significantly aggravated the Pb-induced alterations in the end points associated with oxidative stress and apoptosis. The finding confirms the involvement of reactive oxygen species (ROS)-mediated oxidative stress, and impairment of mitochondrial membrane potential, which subsequently facilitate the translocation of triggering proteins between cytoplasm and mitochondria. We further confirmed the apoptotic changes due to induction of mitochondria-mediated caspase cascade. These cellular changes were found to recover significantly, if the cells are exposed to N-acetyl cysteine (NAC), a known antioxidant. Our data suggest that ethanol may potentiate Pb-induced cellular damage in brain cells, but such damaging effects could be recovered by inhibition of ROS generation. These results open up further possibilities for the design of new therapeutics based on antioxidants to prevent neurodegeneration and associated health problems.
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Sapanidou VG, Margaritis I, Siahos N, Arsenopoulos K, Dragatidou E, Taitzoglou IA, Zervos IA, Theodoridis A, Tsantarliotou MP. Antioxidant effect of a polyphenol-rich grape pomace extract on motility, viability and lipid peroxidation of thawed bovine spermatozoa. ACTA ACUST UNITED AC 2014; 21:19. [PMID: 25984501 PMCID: PMC4389799 DOI: 10.1186/2241-5793-21-19] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 10/15/2014] [Indexed: 11/10/2022]
Abstract
Background Grape extracts of the Greek species Vitis vinifera possess potent antioxidant properties in vitro. The freeze/thaw process and the preparation of semen during assisted reproductive techniques can adversely affect the functional integrity of spermatozoa. The objective was to assess the effect of three different concentrations (1 μg ml−1, 2 μg ml−1 and 5 μg ml−1) of a polyphenol-rich grape pomace extract on motility, viability, acrosomal and lipid peroxidation status of thawed bovine spermatozoa after 2 and 4 hrs of incubation. Results The results indicate that the percentage of “Rapid” spermatozoa remained significantly increased (p <0.05) in the presence of 5 μg ml−1 of the extract, compared to the control after 2 hrs of incubation. Additionally, the incubation of spermatozoa with 2 μg ml−1 and 5 μg ml−1 of the extract for 2 hrs resulted in a significantly better maintenance of viable spermatozoa with intact acrosome (p <0.05). The other parameters did not show statistically significant changes. Moreover, the presence of 2 μg ml−1 and 5 μg ml−1 of the extract kept the levels of Malondialdehyde (MDA) production in significantly lower level, compared to the other groups, after 2 hrs and 4 hrs of incubation (p <0.05). Particularly, a dose-dependent effect was noticed after 2 hrs of incubation. Conclusions Our results suggest that the grape pomace extract exerts a powerful antioxidant role, by suppressing lipid peroxidation, and provides protection in terms of motility and acrosomal integrity, which are correlated with in vivo fertility. The optimal extract concentration is 5 μg ml−1.
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Affiliation(s)
- Vasiliki G Sapanidou
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis Margaritis
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Nektarios Siahos
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Konstantinos Arsenopoulos
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Eleni Dragatidou
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis A Taitzoglou
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis A Zervos
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Alexandros Theodoridis
- Laboratory of Animal Production Economics, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria P Tsantarliotou
- Laboratory of Physiology, School of Veterinary Medicine, Faculty of Health Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Parkia biglobosa improves mitochondrial functioning and protects against neurotoxic agents in rat brain hippocampal slices. BIOMED RESEARCH INTERNATIONAL 2014; 2014:326290. [PMID: 25177688 PMCID: PMC4142556 DOI: 10.1155/2014/326290] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 06/26/2014] [Accepted: 06/28/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Methanolic leaf extracts of Parkia biglobosa, PBE, and one of its major polyphenolic constituents, catechin, were investigated for their protective effects against neurotoxicity induced by different agents on rat brain hippocampal slices and isolated mitochondria. METHODS Hippocampal slices were preincubated with PBE (25, 50, 100, or 200 µg/mL) or catechin (1, 5, or 10 µg/mL) for 30 min followed by further incubation with 300 µM H2O2, 300 µM SNP, or 200 µM PbCl2 for 1 h. Effects of PBE and catechin on SNP- or CaCl2-induced brain mitochondrial ROS formation and mitochondrial membrane potential (ΔΨm) were also determined. RESULTS PBE and catechin decreased basal ROS generation in slices and blunted the prooxidant effects of neurotoxicants on membrane lipid peroxidation and nonprotein thiol contents. PBE rescued hippocampal cellular viability from SNP damage and caused a significant boost in hippocampus Na(+), K(+)-ATPase activity but with no effect on the acetylcholinesterase activity. Both PBE and catechin also mitigated SNP- or CaCl2-dependent mitochondrial ROS generation. Measurement by safranine fluorescence however showed that the mild depolarization of the ΔΨm by PBE was independent of catechin. CONCLUSION The results suggest that the neuroprotective effect of PBE is dependent on its constituent antioxidants and mild mitochondrial depolarization propensity.
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The effects of choline on hepatic lipid metabolism, mitochondrial function and antioxidative status in human hepatic C3A cells exposed to excessive energy substrates. Nutrients 2014; 6:2552-71. [PMID: 25010553 PMCID: PMC4113756 DOI: 10.3390/nu6072552] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/12/2014] [Accepted: 06/18/2014] [Indexed: 01/21/2023] Open
Abstract
Choline plays a lipotropic role in lipid metabolism as an essential nutrient. In this study, we investigated the effects of choline (5, 35 and 70 μM) on DNA methylation modifications, mRNA expression of the critical genes and their enzyme activities involved in hepatic lipid metabolism, mitochondrial membrane potential (Δψm) and glutathione peroxidase (GSH-Px) in C3A cells exposed to excessive energy substrates (lactate, 10 mM; octanoate, 2 mM and pyruvate, 1 mM; lactate, octanoate and pyruvate-supplemented medium (LOP)). Thirty five micromole or 70 μM choline alone, instead of a low dose (5 μM), reduced hepatocellular triglyceride (TG) accumulation, protected Δψm from decrement and increased GSH-Px activity in C3A cells. The increment of TG accumulation, reactive oxygen species (ROS) production and Δψm disruption were observed under LOP treatment in C3A cells after 72 h of culture, which were counteracted by concomitant treatment of choline (35 μM or 70 μM) partially via reversing the methylation status of the peroxisomal proliferator-activated receptor alpha (PPARα) gene promoter, upregulating PPARα, carnitine palmitoyl transferase-I (CPT-I) and downregulating fatty acid synthase (FAS) gene expression, as well as decreasing FAS activity and increasing CPT-I and GSH-Px activities. These findings provided a novel insight into the lipotropic role of choline as a vital methyl-donor in the intervention of chronic metabolic diseases.
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Kim J, Lee Y, Yang M. Environmental exposure to lead (Pb) and variations in its susceptibility. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2014; 32:159-85. [PMID: 24875442 DOI: 10.1080/10590501.2014.907461] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Based on exposure frequency and intrinsic toxicity, lead (Pb) ranks one of the highest priority toxic materials. Continuous regulation of environmental Pb exposure has contributed to dramatically diminished exposure levels of Pb, for example, blood level of Pb. However, the safety level of Pb is not established, as low-level exposure to Pb still shows severe toxicity in high susceptible population and late onset of some diseases from early exposure. In the present study, we focused on food-borne Pb exposure and found broad variations in Pb exposure levels via food among countries. In addition, there are genetic or ethnical variations in Pb-targeted and protective genes. Moreover, various epigenetic alterations were induced by Pb poisoning. Therefore, we suggest a systemic approach including governmental (public) and individual prevention from Pb exposure with continuous biological monitoring and genetic or epigenetic consideration.
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Affiliation(s)
- Jina Kim
- a Research Center for Cell Fate Control, College of Pharmacy , Sookmyung Women's University , Seoul , Republic of Korea
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Komolafe K, Olaleye TM, Omotuyi OI, Boligon AA, Athayde ML, Akindahunsi AA, Teixeira da Rocha JB. In vitro antioxidant activity and effect of Parkia biglobosa bark extract on mitochondrial redox status. J Acupunct Meridian Stud 2013; 7:202-10. [PMID: 25151454 DOI: 10.1016/j.jams.2013.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 07/28/2013] [Accepted: 07/30/2013] [Indexed: 11/16/2022] Open
Abstract
Aqueous-methanolic extract of Parkia biglobosa bark (PBB) was screened for its polyphenolic constituents, in vitro antioxidant activity, and effect on mitochondria redox status. The in vitro antioxidant activity was assessed by using the scavenging abilities and the reducing powers of 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) diammonium salt radical cation against Fe(3+). Subsequently, the ability of PBB to inhibit lipid peroxidation induced by FeSO(4) (10 μm) and its metal-chelating potential were investigated. The effects of the extract on basal reactive oxygen species (ROS) generation and on the mitochondrial membrane potential (ΔΨm) in isolated mitochondria were determined by using 2', 7'-dichlorodihydrofluorescin (DCFH) oxidation and safranin fluorescence, respectively. PBB mitigated the Fe(II)-induced lipid peroxidation in rat tissues and showed dose-dependent scavenging of DPPH (IC(50): 98.33 ± 10.0 μg/mL) and ABTS. (trolox equivalent antioxidant concentration, TEAC value = 0.05), with considerable ferric-reducing and moderate metal-chelating abilities. PBB caused slight decreases in both the liver and the brain mitochondria potentials and resulted in a significant decrease (p < 0.001) in DCFH oxidation. Screening for polyphenolics using high-performance liquid chromatography coupled to a diode array detector (HPLC-DAD) revealed the presence of caffeic acid, gallic acid, catechin, epigalocatechin, rutin, and quercetin. These results demonstrate for the first time the considerable in vitro antioxidant activity and favorable effect of PBB on mitochondria redox status and provide justification for the use of the plant in ethnomedicine.
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Affiliation(s)
- Kayode Komolafe
- Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, Nigeria; Department of Chemistry, Biochemical Toxicology, Federal University of Santa Maria, Santa Maria, Brazil.
| | - Tolulope Mary Olaleye
- Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, Nigeria
| | - Olaposi Idowu Omotuyi
- Department of Molecular Pharmacology and Neuroscience, Nagasaki University, Nagasaki, Japan
| | - Aline Augusti Boligon
- Department of Chemistry, Biochemical Toxicology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Margareth Linde Athayde
- Department of Chemistry, Biochemical Toxicology, Federal University of Santa Maria, Santa Maria, Brazil
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Wittayarat M, Ito A, Kimura T, Namula Z, Luu VV, Do LTK, Sato Y, Taniguchi M, Otoi T. Effects of green tea polyphenol on the quality of canine semen after long-term storage at 5°C. Reprod Biol 2013; 13:251-4. [PMID: 24011197 DOI: 10.1016/j.repbio.2013.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 10/22/2012] [Indexed: 10/26/2022]
Abstract
The aim of the present study was to determine the effects of green tea polyphenol on the quality of canine semen after long-term storage at 5°C. The supplementation of a Tris-egg yolk extender with polyphenol (0.5, 0.75, or 1mg/mL) increased the motility and viability of sperm preserved for four weeks at 5°C.
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Affiliation(s)
- Manita Wittayarat
- Department of Animal Reproduction, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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50
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Potential for preventive effects of cocoa and cocoa polyphenols in cancer. Food Chem Toxicol 2013; 56:336-51. [DOI: 10.1016/j.fct.2013.02.020] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 02/04/2013] [Accepted: 02/06/2013] [Indexed: 12/20/2022]
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