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Azeez IA, Olopade F, Laperchia C, Andrioli A, Scambi I, Onwuka SK, Bentivoglio M, Olopade JO. Regional Myelin and Axon Damage and Neuroinflammation in the Adult Mouse Brain After Long-Term Postnatal Vanadium Exposure. J Neuropathol Exp Neurol 2016; 75:843-54. [PMID: 27390101 DOI: 10.1093/jnen/nlw058] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Indexed: 01/08/2023] Open
Abstract
Environmental exposure to vanadium occurs in areas of persistent burning of fossil fuels; this metal is known to induce oxidative stress and oligodendrocyte damage. Here, we determined whether vanadium exposure (3 mg/kg) in mice during the first 3 postnatal months leads to a sustained neuroinflammatory response. Body weight monitoring, and muscle strength and open field tests showed reduction of body weight gain and locomotor impairment in vanadium-exposed mice. Myelin histochemistry and immunohistochemistry for astrocytes, microglia, and nonphosphorylated neurofilaments revealed striking regional heterogeneity. Myelin damage involved the midline corpus callosum and fibers in cortical gray matter, hippocampus, and diencephalon that were associated with axonal damage. Astrocyte and microglial activation was identified in the same regions and in the internal capsule; however, no overt myelin and axon damage was observed in the latter. Double immunofluorescence revealed induction of high tumor necrosis factor (TNF) immunoreactivity in reactive astrocytes. Western blotting analysis showed significant induction of TNF and interleukin-1β expression. Together these findings show that chronic postnatal vanadium exposure leads to functional deficit and region-dependent myelin damage that does not spare axons. This injury is associated with glial cell activation and proinflammatory cytokine induction, which may reflect both neurotoxic and neuroprotective responses.
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Affiliation(s)
- Idris A Azeez
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - Funmilayo Olopade
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - Claudia Laperchia
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - Anna Andrioli
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - Ilaria Scambi
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - Silas K Onwuka
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - Marina Bentivoglio
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO)
| | - James O Olopade
- From the Department of Veterinary Anatomy, University of Ibadan, Nigeria (IAA, SKO, JOO); Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Italy (IAA, CL, AA, IS, MB); Department of Anatomy, University of Ibadan, Nigeria (FO).
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Jiang M, Li Y, Zhang B, Zhou A, Zheng T, Qian Z, Du X, Zhou Y, Pan X, Hu J, Wu C, Peng Y, Liu W, Zhang C, Xia W, Xu S. A nested case–control study of prenatal vanadium exposure and low birthweight. Hum Reprod 2016; 31:2135-41. [DOI: 10.1093/humrep/dew176] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 06/16/2016] [Indexed: 11/14/2022] Open
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Yoo EJ, Lee BM. Chemopreventive effects of aloe against genotoxicity induced by benzo[a]pyrene. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2005; 68:1841-60. [PMID: 16207633 DOI: 10.1080/15287390500182875] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Chemopreventive effects of aloe against benzo[a]pyrene (BaP) mutagenicity were investigated in the Salmonella typhimurium bacterial mutation assay, the chromosome aberration assay using Chinese hamster ovary (CHO) cells, and the mouse micronuclei test using bone-marrow cells. In the bacterial assay, aloe produced a concentration-dependent decrease in the number of mutant colonies induced by BaP. The chromosome-damaging responses of BaP in CHO cells were abolished by treatment with aloe, approximately to the level seen in control. In the in vivo mouse bone-marrow micronuclei test, pretreatment of aloe 24 h prior to BaP treatment reduced the frequency of micronucleated polychromatic erythrocytes. In the cells of CHO and bone marrow treated with aloe, glutathione (GSH) levels were shown to be higher and extracellular discharge rate increased as incubation time with aloe rose. MDR1 and MRP2 gene were more expressed in Hepa c cells than in NTCC cells, but there was no change in BCRP gene expression. The antimutagenic effects of aloe were statistically significant and concentration dependent. These results demonstrated that aloe might exert chemopreventive effects against BaP-induced mutagenicity.
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Affiliation(s)
- Eun Jeong Yoo
- Division of Toxicology, School of Pharmacy, SungKyunKwan University, Suwon, Kyonggi-Do, Korea
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Ress NB, Chou BJ, Renne RA, Dill JA, Miller RA, Roycroft JH, Hailey JR, Haseman JK, Bucher JR. Carcinogenicity of inhaled vanadium pentoxide in F344/N rats and B6C3F1 mice. Toxicol Sci 2003; 74:287-96. [PMID: 12773761 DOI: 10.1093/toxsci/kfg136] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Vanadium pentoxide (V2O5) is a slightly soluble compound found in airborne particle emissions from metallurgical works and oil and coal burning. Because the carcinogenic potential of V2O5 was not known, F344/N rats and B6C3F1 mice (N=50/sex/species) were exposed to V2O5 at concentrations of 0, 0.5 (rats only), 1, 2, or 4 (mice only) mg/m3, by whole-body inhalation for 2 years. The survival and body weights of rats were minimally affected by exposure to V2O5. The survival and body weights of male mice exposed to 4 mg/m3 and body weights of all exposed groups of female mice were lower than the controls. Alveolar/bronchiolar (A/B) neoplasms occurred in male rats exposed to 0.5 and 2 mg/m3 at incidences exceeding the National Toxicology Program (NTP) historical control ranges. A marginal increase in A/B neoplasms was also observed in female rats exposed to 0.5 mg/m3. Increases in chronic inflammation, interstitial fibrosis, and alveolar and bronchiolar hyperplasia/metaplasia and squamous metaplasia were observed in exposed male and female rats. A/B neoplasms were significantly increased in all groups of exposed mice. As with rats, increases in chronic inflammation, interstitial fibrosis, and alveolar and bronchiolar epithelial hyperplasia were observed in mice exposed to V2O5. Thus, V2O5 exposure was a pulmonary carcinogen in male rats and male and female mice. The marginal tumor response in the lungs of female rats could not be attributed conclusively to exposure to V2O5. These responses were noted at and slightly above the OSHA permissible occupational exposure limit of 0.5 mg/m3 (dust) (National Institute for Occupational Safety and Health, NIOSH Pocket Guide to Chemical Hazards, U.S. Department of Health and Human Services, Washington, DC, 1997, p. 328).
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Affiliation(s)
- N B Ress
- National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA
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Tabak M, Armon R, Rosenblat G, Stermer E, Neeman I. Diverse effects of ascorbic acid and palmitoyl ascorbate on Helicobacter pylori survival and growth. FEMS Microbiol Lett 2003; 224:247-53. [PMID: 12892889 DOI: 10.1016/s0378-1097(03)00439-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Among many antioxidants used in the food, pharmaceutical and cosmetic industries, ascorbic acid (AA) is one of the most important. AA has been suggested to decrease the risk of gastric disease (gastritis, duodenal ulcer, and carcinoma) by direct action on Helicobacter pylori. However, there are limited studies on the possible role of AA and its derivatives such as palmitoyl ascorbate (PA) on the growth and survival of H. pylori. In the present study it was demonstrated in vitro that AA in the concentration range 10-20 mg x ml(-1) (50-100 mM) inhibited H. pylori growth in liquid medium under microaerophilic conditions. In contrast, under aerobic conditions AA in the concentration range 2-20 mg x ml(-1) (10-100 mM) significantly increased the survival of H. pylori presumably eliminating the toxic effect of reactive oxygen species on bacterial cells. The hydrophobic derivative of AA, PA (a food antioxidant), demonstrated a strong antibacterial effect, under both aerobic and microaerophilic conditions in the concentration range 0.04-0.4 mg x ml(-1) (0.1-1.0 mM). This effect was also tested on other bacterial strains: Escherichia coli, Proteus vulgaris, Proteus mirabilis, Pseudomonas aeruginosa, Enterococcus faecalis, Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Staphylococcus epidermidis, Clostridium sporogenes and Campylobacter jejuni. Among these bacterial strains, PA showed a similar inhibitory effect on B. cereus and B. subtilis as observed with H. pylori. The results suggest that PA may be considered an important AA derivative in eradication of H. pylori in vitro and in vivo and to decrease the risk for gastric diseases.
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Affiliation(s)
- M Tabak
- Department of Food Engineering and Biotechnology, Technion, Haifa 32000, Israel
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Rosenblat G, Graham MF, Jonas A, Tarshis M, Schubert SY, Tabak M, Neeman I. Effect of Ascorbic Acid and Its Hydrophobic Derivative Palmitoyl Ascorbate on the Redox State of Primary Human Fibroblasts. J Med Food 2003; 4:107-115. [PMID: 12639419 DOI: 10.1089/109662001300341761] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Ascorbic acid (AA) and its derivatives participate in vitro in oxidative-reductive reactions both as antioxidants and as prooxidants. The physiological relevance of these prooxidant effects of AA and its derivatives remains unclear. There is little evidence that AA can initiate formation of reactive oxygen species (ROS) or lipid peroxidation in cells or tissue. In order to examine the effect of AA and its derivative palmitoyl ascorbate on in situ intracellular ROS production and lipid peroxidation, 2('),7(')-dichlorofluorescin diacetate (DCFH-DA) and cis-parinaric acid were used as fluorescent probes in cultural neonatal foreskin fibroblasts. The results demonstrated that the effect of AA depended on the in vitro growth conditions. AA induced augmentation of the intracellular ROS concentration in newly plated (24 hours) cells. However, in cells cultured for 72 hours, AA had a different effect: it moderately reduced intracellular ROS concentration but stimulated lipid peroxidation in the cytoplasmic membrane. Palmitoyl ascorbate demonstrated significant inhibition of intracellular DCFH-DA oxidation presumably caused by inhibition of reduced nicotinamide adenine dinucleotide phosphate (NADPH) oxidase.
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Affiliation(s)
- Gennady Rosenblat
- Department of Food Engineering and Biotechnology, Technion-Israel Institute of Technology, 32000 Haifa, Israel
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Perricone N, Nagy K, Horváth F, Dajkó G, Uray I, Zs-Nagy I. The hydroxyl free radical reactions of ascorbyl palmitate as measured in various in vitro models. Biochem Biophys Res Commun 1999; 262:661-5. [PMID: 10471382 DOI: 10.1006/bbrc.1999.1277] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The OH(*) free radical scavenging properties of ascorbyl palmitate (AP), water-solubilized in the presence of a surfactant (Brij 35), were tested in various systems: (1) The inhibition of polymerization of bovine serum albumin by OH(*) free radicals generated by the Fenton reaction indicated AP exerts a considerable protective effect against polymerization by scavenging the OH(*) free radicals. (2) ESR spin trapping comparisons of DMPO with AP were conducted. Using the Fenton reaction as a source of OH(*) free radicals, AP was 1 order of magnitude faster in scavenging these radicals than DMPO. (3) Oxidative modification of BSA by (60)Co-gamma irradiation of 80 krad, results in a strong increase in protein carbonyl content. AP inhibits carbonyl formation very efficiently, indicating that AP may be utilized as a biological OH(*) free radical scavenger in human therapy.
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Affiliation(s)
- N Perricone
- Department of Dermatology, Yale School of Medicine, New Haven, Connecticut, USA
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Lee BH, Lee S, Kim YS, Bertram B, Wiessler M. Chemopreventive effects of S-(N,N-diethyldithiocarbamoyl)-N-acetyl-L-cysteine against benzo[a]pyrene. Mutat Res 1997; 377:167-75. [PMID: 9247612 DOI: 10.1016/s0027-5107(97)00063-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The putative antimutagenic/anticarcinogenic organosulfur compound, S-(N,N-diethyldithiocarbamoyl)-N-acetyl-L-cysteine (AC-DDTC), has been demonstrated to inhibit the metabolic activation and the genotoxicity of N-nitrosodiethylamine. We have investigated the chemopreventive activity of AC-DDTC against benzo[a]pyrene (B[a]P) in the Salmonella typhimurium bacterial mutation assay, in the chromosome aberration assay using Chinese hamster lung fibroblast (CHL), and in the mouse micronucleus assay in bone marrow cells. In the bacterial mutation assay, AC-DDTC produced a concentration dependent decrease in the number of mutant colonies induced by B[a]P. The chromosome damaging responses of B[a]P in CHL cells were abolished by the treatment of AC-DDTC, approximately to the level of the control. In the in vivo mouse bone marrow micronucleus test, pretreatment of AC-DDTC 1 h prior to B[a]P reduced the frequency of micronucleated polychromatic erythrocytes. The inhibitory effects were statistically significant and dose-dependent. Our results demonstrate that AC-DDTC, one of the mixed disulfide model compounds of disulfiram, prevents the mutagenic effects of B[a]P.
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Affiliation(s)
- B H Lee
- Institute of Environment and Life Science, Hallym University, Chunchon, Kangwon-Do, South Korea.
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