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Chitolina R, Nicola P, Sachett A, Bevilaqua F, Cunico L, Reginatto A, Bertoncello K, Marins K, Zanatta AP, Medeiros M, Lima AS, Parisotto C, Menegatt JCO, Goetten AF, Zimermann FC, Ramos AT, Portela VM, Barreta MH, Conterato GMM, Zanatta L. Subacute exposure to Roundup® changes steroidogenesis and gene expression of the glutathione-glutaredoxin system in rat ovaries: Implications for ovarian toxicity of this glyphosate-based herbicide. Toxicol Appl Pharmacol 2023; 473:116599. [PMID: 37328116 DOI: 10.1016/j.taap.2023.116599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/03/2023] [Accepted: 06/10/2023] [Indexed: 06/18/2023]
Abstract
Studies have indicated that glyphosate induces endocrine disruption and may adversely affect the male reproductive system. However, evidence of its effects on ovarian function is poorly understood so far, making further studies necessary on the mechanisms of the glyphosate toxicity in the female reproductive system. The aim of this work was to evaluate the effect of a subacute exposure (28 days) to the glyphosate-based formulation Roundup® (1.05, 10.5 and 105 μg/kg b.w. of glyphosate) on steroidogenesis, oxidative stress, systems involved in cell redox control and histopathological parameters in rat ovaries. Hence we quantify plasma estradiol and progesterone by chemiluminescence; non-protein thiol levels, TBARS, superoxide dismutase and catalase activity by spectrophotometry; gene expression of steroidogenic enzymes and redox systems by real-time PCR; and ovarian follicles by optical microscopy. Our results demonstrated that oral exposure increased progesterone levels and the mRNA expression of 3β-hydroxysteroid dehydrogenase. Histopathological analysis revealed a decrease in the number of primary follicles and an increase in the number of corpus luteum in rats exposed to Roundup®. An imbalance of the oxidative status was also evidenced by decreasing the catalase activity at all groups exposed to the herbicide. Increased lipid peroxidation and gene expression of glutarredoxin and decreased of glutathione reductase were also observed. Our results indicate that Roundup® causes endocrine disruption of hormones related to female fertility and reproduction and changes the oxidative status by altering antioxidant activity, inducing lipid peroxidation, as well as changing the gene expression of the glutathione-glutarredoxin system in rat ovaries.
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Affiliation(s)
- Rafael Chitolina
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Patrícia Nicola
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Adrieli Sachett
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Fernanda Bevilaqua
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Lemen Cunico
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Alissara Reginatto
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Kanandra Bertoncello
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Katiuska Marins
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Ana Paula Zanatta
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil
| | - Marta Medeiros
- Universidade Luterana do Brasil, Departamento de Ciências da Saúde, Canoas, RS, Brazil
| | - Acauane S Lima
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Cristiane Parisotto
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Jean Carlo O Menegatt
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - André F Goetten
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Francielli C Zimermann
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Adriano T Ramos
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Valério M Portela
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Marcos H Barreta
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Greicy Michelle M Conterato
- Universidade Federal de Santa Catarina, Centro de Ciências Rurais, Campus de Curitibanos, Rodovia Ulisses Gaboardi-Km 3, 89520-000 Curitibanos, SC, Brazil
| | - Leila Zanatta
- Universidade Comunitária da Região de Chapecó, Avenida Senador Atílio Fontana, 591E, 89809-000 Chapecó, SC, Brazil; Universidade do Estado de Santa Catarina, Centro de Educação Superior do Oeste, Departamento de Enfermagem, Rua 7 de Setembro 77-D, Centro, 89806-152 Chapecó, SC, Brazil.
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Xue Q, Wang R, Zhu-Ge R, Guo L. Research progresses on the effects of heavy metals on the circadian clock system. REVIEWS ON ENVIRONMENTAL HEALTH 2023; 0:reveh-2022-0104. [PMID: 37572029 DOI: 10.1515/reveh-2022-0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 06/12/2023] [Indexed: 08/14/2023]
Abstract
Environmental pollution with heavy metals is widespread, thus increasing attention has been paid to their toxic effects. Recent studies have suggested that heavy metals may influence the expression of circadian clock genes. Almost all organs and tissues exhibit circadian rhythms. The normal circadian rhythm of an organism is maintained by the central and peripheral circadian clock. Thus, circadian rhythm disorders perturb normal physiological processes. Here, we review the effects of heavy metals, including manganese, copper, cadmium, and lead, on four core circadian clock genes, i.e., ARNTL, CLOCK, PER, and CRY genes.
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Affiliation(s)
- Qian Xue
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Rui Wang
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Ruijian Zhu-Ge
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Li Guo
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
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Qu J, Wang Q, Sun X, Li Y. The environment and female reproduction: Potential mechanism of cadmium poisoning to the growth and development of ovarian follicle. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 244:114029. [PMID: 36055045 DOI: 10.1016/j.ecoenv.2022.114029] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) is ubiquitous in our environment and can easily bioaccumulate into the organism after passage through the respiratory and digestive tracts. Long-term exposure to Cd can result in the significant bioaccumulation in organism because of its long biological high-life (10-30 years), which exerts irreversible damages on the health of animals and humans. Although there are increased evidence of impeding the normal function of female reproduction resulted from Cd exposure, the mechanism of the negative action of Cd on the growth and development of ovarian follicle remains enigmatic. Thus, the purpose of the presented study is to summarize available literature which describing Cd-related toxicity involved in the adverse effects on the growth and development of the ovarian follicle. In conclusion, it is suggested that Cd causes damage to the folliculogenesis of mammalians, which results in the decline in the number and quality of ovulated oocytes and the failure in the fertilization. The mechanism behinds that may be linked to the interference to the production of reproductive hormones and the augment of reactive oxygen species (ROS). Furthermore, the enhanced ROS, in turn, impairs various molecules including proteins, lipids and DNA, as well as the balance of the antioxidant defense system, mitochondrial homeostasis, endoplasmic reticulum, autophagy and epigenetic modification. This review is expected to elaborate the toxic mechanism of Cd exposure to the growth and development of ovarian follicles and provide essential remediation strategies to alleviate the damage of Cd to female reproductive health.
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Affiliation(s)
- Jingwen Qu
- Key Laboratory for Animal Genetics & Molecular Breeding of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Department of Animal Science, University of Vermont, Burlington, VT 05405, USA.
| | - Qiang Wang
- Key Laboratory for Animal Genetics & Molecular Breeding of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Xiaomei Sun
- Key Laboratory for Animal Genetics & Molecular Breeding of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Yongjun Li
- Key Laboratory for Animal Genetics & Molecular Breeding of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
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Navigatore Fonzo L, Alfaro M, Mazaferro P, Golini R, Jorge L, Cecilia Della Vedova M, Ramirez D, Delsouc B, Casais M, Anzulovich AC. An intracerebroventricular injection of amyloid-beta peptide (1-42) aggregates modifies daily temporal organization of clock factors expression, protein carbonyls and antioxidant enzymes in the rat hippocampus. Brain Res 2021; 1767:147449. [PMID: 33771518 DOI: 10.1016/j.brainres.2021.147449] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 02/26/2021] [Accepted: 03/19/2021] [Indexed: 10/21/2022]
Abstract
Alzheimer disease (AD) is the most frequent form of dementia in the elderly. It is characterized by the deterioration of memory and learning. The histopathological hallmarks of AD include the presence of extracellular deposits of amyloid beta peptide, intracellular neurofibrillary tangles, neuron and synapse loss, in the brain, including the hippocampus. Accumulation of Aβ peptide causes an increase in intracellular reactive oxygen species (ROS) and free radicals associated to a deficient antioxidant defense system. Besides oxidative stress and cognitive deficit, AD patients show alterations in their circadian rhythms. The objective of this work was to investigate the effects of an intracerebroventricular injection of amyloid beta peptide Aβ(1-42) aggregates on temporal patterns of protein oxidation, antioxidant enzymes and clock factors in the rat hippocampus. Four-month-old male Holtzman rats divided into the groups control (CO) and Aβ-injected (Aβ), were maintained under 12 h-light12h-dark conditions and received water and food ad-libitum. Hippocampus samples were isolated every 6 h during a 24 h period. Our results showed daily patterns of protein carbonyls, catalase (CAT) and glutathione peroxidase (GPx) expression and activity, as well as Rorα and Rev-erbß mRNA, in the rat hippocampus. Interestingly, an intracerebroventricular injection of Aβ aggregates modified daily oscillation of protein carbonyls levels, phase-shifted daily rhythms of clock genes and had a differential effect on the daily expression and activity of CAT and GPx. Thus, Aβ aggregates might affect clock-mediated transcriptional regulation of antioxidant enzymes, by affecting the formation of BMAL1:CLOCK heterodimer, probably, as a consequence of the alteration of the redox state observed in rats injected with Aβ.
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Affiliation(s)
| | - Mauro Alfaro
- Laboratory of Chronobiology, Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Paula Mazaferro
- Laboratory of Chronobiology, Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Rebeca Golini
- Laboratory of Chronobiology, Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Leporatti Jorge
- Faculty of Economic, Legal and Social Sciences, National University of San Luis (UNSL), Campus Universitario, Ruta Prov. N° 55 (Ex. 148) Extremo Norte, D5700HHW San Luis, Argentina
| | - Maria Cecilia Della Vedova
- Institute of Chemistry-San Luis,(INQUISAL), National Council of Science and Technology (CONICET), National University of San Luis (UNSL), Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Darío Ramirez
- Laboratory of Experimental & Translational Medicine, Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Belén Delsouc
- Laboratory of Biology Reproduction, Multidisciplinary Institute of Biological Res-earch-San Luis (IMIBIO-SL), National Council of Science and Technology (CONICET), National University of San Luis (UNSL), Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Marilina Casais
- Laboratory of Biology Reproduction, Multidisciplinary Institute of Biological Res-earch-San Luis (IMIBIO-SL), National Council of Science and Technology (CONICET), National University of San Luis (UNSL), Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina
| | - Ana Cecilia Anzulovich
- Laboratory of Chronobiology, Av Ejército de los Andes N° 950, D5700HHW San Luis, Argentina.
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Ledezma C, Coria-Lucero C, Delsouc MB, Casais M, Della Vedova C, Ramirez D, Devia CM, Delgado SM, Navigatore-Fonzo L, Anzulovich AC. Effect of an Intracerebroventricular Injection of Aggregated Beta-amyloid (1-42) on Daily Rhythms of Oxidative Stress Parameters in the Prefrontal Cortex. Neuroscience 2020; 458:99-107. [PMID: 32827572 DOI: 10.1016/j.neuroscience.2020.08.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 01/08/2023]
Abstract
Accumulation of amyloid peptides in the brain plays a key role in the pathogenesis of Alzheimer's disease (AD). Aggregated beta-amyloid (Aβ) peptide increases intracellular reactive oxygen species associated to a deficient antioxidant defense system. Prefrontal cortex plays a key role in memory and learning and is especially susceptible to oxidative stress. The objective of this work was to investigate the effects of an intracerebroventricular (i.c.v.) injection of Aβ (1-42) on 24 h patterns of oxidative stress parameters and antioxidant defenses in the rat prefrontal cortex. Four-month-old male Holtzman rats were divided into two groups defined as: control (CO) and Aβ-injected (Aβ). Rats were maintained under12 h-light:12 h-dark conditions and received water and food ad libitum. Tissues samples were isolated every 6 h during a 24 h period. Interestingly, we found that an i.c.v. injection of Aβ(1-42) increased lipid peroxidation, reduced total antioxidant capacity level, phase-shifted the daily peak of reduced glutathione, and had a differential effect on the oscillating catalase and glutathione peroxidase specific activity. Thus, elevated levels of Aβ aggregates-a pathogenic hallmark of AD, caused altered temporal patterns of the cellular redox state in prefrontal cortex rat. These findings might contribute, at least in part, to the understanding of the molecular and biochemical basis of redox changes caused by circadian rhythms alterations observed in AD patients.
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Affiliation(s)
- Carina Ledezma
- Laboratorio de Cronobiología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - Cinthia Coria-Lucero
- Laboratorio de Cronobiología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - María Belén Delsouc
- Laboratorio de Biología de la Reproducción (LABIR), Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - Marilina Casais
- Laboratorio de Biología de la Reproducción (LABIR), Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - Cecilia Della Vedova
- Instituto de Química de San Luis (INQUISAL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - Darío Ramirez
- Laboratorio de Medicina Experimental & Traduccional (LME&T), Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - Cristina Mabel Devia
- Laboratorio de Cronobiología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina
| | - Silvia Marcela Delgado
- Laboratorio de Cronobiología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina.
| | - Lorena Navigatore-Fonzo
- Laboratorio de Cronobiología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina.
| | - Ana Cecilia Anzulovich
- Laboratorio de Cronobiología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, Ejército de Los Andes 950, CP D5700HHW San Luis, Argentina.
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Zhang Q, Jiang C, Li H, Zhang C, Wu H, Huang F. Effect of the Interaction Between Cadmium Exposure and CLOCK Gene Polymorphisms on Thyroid Cancer: a Case-Control Study in China. Biol Trace Elem Res 2020; 196:86-95. [PMID: 31637582 DOI: 10.1007/s12011-019-01904-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/12/2019] [Indexed: 12/20/2022]
Abstract
The exposure to endocrine disruptors and the disruption of the circadian rhythms can both affect thyroid hormones, with results that are most likely carcinogenic in humans. The effects of cadmium (Cd) level and circadian-related single-nucleotide polymorphisms (SNPs) on thyroid cancer (TC) risk have rarely been reported. In this study, the associations of urine Cd, CLOCK gene polymorphisms, and TC risk were evaluated, in addition to the effect of the gene-environment interaction on TC risk. In this case-control study, 218 TC cases and 218 controls were enrolled. Cd in urinary samples was determined by atomic absorption spectrometry. Three SNPs (rs3805151, rs3805154, and rs78929565) were genotyped with an improved multiplex ligation detection reaction technique. The individuals with a high Cd level were 1.72-fold more likely to have TC (OR = 1.72, 95%CI 1.04-2.85), and a high Cd level was associated with higher tumor T stage and N stage (OR = 2.42, 95%CI 1.28-4.58; OR = 3.26, 95%CI 1.67-6.33, respectively). Individuals with TT genotype of rs78929565 had a 107 % increase in TC risk (OR = 2.07, 95%CI 1.00-4.29). Cases with CT genotype tended to have a higher AJCC stage (OR = 2.79, 95% CI 1.01-7.78). A significant interaction was detected between the rs78929565 variant and Cd exposure (p interaction = 0.04). The TT genotype carriers of rs78929565 with a high Cd level were more susceptible to thyroid cancer than the major homozygotes carriers who were exposed to a low cadmium level (OR = 2.66, 95%CI 1.07-6.59). These findings suggested that Cd exposure and the CLOCK variant genotypes were associated with TC risk and tumor severity. Individuals with minor allele of rs78929565 and higher Cd exposure had increased susceptibility to TC. Further studies are required to confirm these findings.
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Affiliation(s)
- Qian Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China
| | - Chunxiao Jiang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China
| | - Haibo Li
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Chi Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China
| | - Huabing Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China
| | - Fen Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China.
- Central Laboratory of Preventive Medicine, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China.
- Laboratory for Environmental Toxicology, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, 230032, Anhui, China.
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Castro A, Coria-Lucero C, Anzulovich A, Navigatore-Fonzo L. Effects of experimental intracerebral ventricular injection of amyloid beta peptide (1-42) aggregates on daily rhythms of Aβ-degrading enzymes in the hippocampus: Relevance to Alzheimer's disease pathophysiology. PATHOPHYSIOLOGY 2019; 26:281-287. [DOI: 10.1016/j.pathophys.2019.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 06/24/2019] [Accepted: 07/27/2019] [Indexed: 11/30/2022] Open
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Doğanlar ZB, Uzun M, Ovali MA, Dogan A, Ongoren G, Doğanlar O. Melatonin attenuates caspase-dependent apoptosis in the thoracic aorta by regulating element balance and oxidative stress in pinealectomised rats. Appl Physiol Nutr Metab 2019; 44:153-163. [DOI: 10.1139/apnm-2018-0205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The aim of this study was to explain the possible mechanisms by which melatonin deficiency results in cardiovascular injury and to investigate the effects of melatonin administration on important signalling pathways and element equilibrium in the thoracic aorta (TA). For this purpose, we analysed the cellular and molecular effects of melatonin deficiency or administration on oxidative stress, DNA damage, molecular chaperone response, and apoptosis induction in TA tissues of pinealectomised rats using ELISA, RAPD, qRT-PCR, and Western blot assays. The results showed that melatonin deficiency led to an imbalance in essential element levels, unfolded or misfolded proteins, increased lipid peroxidation, and selectively induced caspase-dependent apoptosis in TA tissues without significantly affecting the Bcl-2/BAX ratio (2.28 in pinealectomised rats, 2.73 in pinealectomised rats treated with melatonin). In pinealectomised rats, the genomic template stability (80.22%) was disrupted by the significantly increased oxidative stress, and heat shock protein 70 (20.96-fold), TNF-α (1.73-fold), caspase-8 (2.03-fold), and caspase-3 (2.87-fold) were markedly overexpressed compared with the sham group. Melatonin treatment was protective against apoptosis and inhibited oxidative damage. In addition, melatonin increased the survivin level and improved the regulation of element equilibrium in TA tissues. The results of the study indicate that melatonin deficiency induces TNF-α-related extrinsic apoptosis signals and that the administration of pharmacological doses of melatonin attenuates cardiovascular toxicity by regulating the increase in the rate of apoptosis caused by melatonin deficiency in TA tissue of Sprague–Dawley rats.
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Affiliation(s)
- Zeynep Banu Doğanlar
- Department of Medical Biology, Faculty of Medicine, Trakya University, 22030 Edirne, Turkey
| | - Metehan Uzun
- Department of Physiology, Faculty of Medicine, Çanakkale Onsekiz Mart University, Çanakkale 17020, Turkey
| | - Mehmet Akif Ovali
- Department of Physiology, Faculty of Medicine, Çanakkale Onsekiz Mart University, Çanakkale 17020, Turkey
| | - Ayten Dogan
- Department of Medical Biology, Faculty of Medicine, Trakya University, 22030 Edirne, Turkey
| | - Gulin Ongoren
- Department of Medical Biology, Faculty of Medicine, Trakya University, 22030 Edirne, Turkey
| | - Oğuzhan Doğanlar
- Department of Medical Biology, Faculty of Medicine, Trakya University, 22030 Edirne, Turkey
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Rozen TD. Linking Cigarette Smoking/Tobacco Exposure and Cluster Headache: A Pathogenesis Theory. Headache 2018; 58:1096-1112. [PMID: 30011061 DOI: 10.1111/head.13338] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2018] [Indexed: 12/16/2022]
Abstract
INTRODUCTION To propose a hypothesis theory to establish a linkage between cigarette smoking and cluster headache pathogenesis. BACKGROUND Cluster headache is a primary headache syndrome grouped under the trigeminal autonomic cephalalgias. What distinguishes cluster headache from all other primary headache conditions is its inherent connection to cigarette smoking. It is undeniable that tobacco exposure is in some manner related to cluster headache. The connection to tobacco exposure for cluster headache is so strong that even if an individual sufferer never smoked, then that individual typically had significant secondary smoke exposure as a child from parental smoking behavior and in many instances both scenarios exist. The manner by which cigarette smoking is connected to cluster headache pathogenesis is unknown at present. If this could be determined this may contribute to advancing our understanding of cluster headache pathophysiology. METHODS/RESULTS Hypothesis statement. CONCLUSION The hypothesis theory will include several principles: (1) the need of double lifetime tobacco exposure, (2) that cadmium is possibly the primary agent in cigarette smoke that leads to hypothalamic-pituitary-gonadal axis toxicity promoting cluster headache, (3) that the estrogenization of the brain and its specific sexually dimorphic nuclei is necessary to develop cluster headache with tobacco exposure, and (4) that the chronic effects of smoking and its toxic metabolites including cadmium and nicotine on the cortex are contributing to the morphometric and orexin alterations that have been previously attributed to the primary headache disorder itself.
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Lee YM, Chung HW, Jeong K, Sung YA, Lee H, Ye S, Ha EH. Association between cadmium and anti-Mullerian hormone in premenopausal women at particular ages. Ann Occup Environ Med 2018; 30:44. [PMID: 30002855 PMCID: PMC6038324 DOI: 10.1186/s40557-018-0255-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 06/21/2018] [Indexed: 02/11/2023] Open
Abstract
Background Anti-Mullerian hormone (AMH) in women is secreted by granulosa cells of antral follicles. AMH appears to be a very stable marker for ovarian function. It may be used to diagnosis cases of premature ovarian failure, polycystic ovary syndrome (PCOS), and ovarian tumors. It has been suggested that cadmium exposure can reduce female fecundity. The purpose of this study was to investigate whether environmental exposure to cadmium was associated with alterations in AMH with regards to age. Methods In a cross-sectional study, the data of premenopausal women living in Seoul, ranging from 30 to 45 of age was collected. The study included a total of 283 women who completed serum AMH and whole blood cadmium assessments. Linear regression analyses were used in order to examine the association between cadmium and AMH. Given that age was the strongest confounder in both cadmium and AMH concentrations, we stratified subjects by 5 years old and analyzed their data. Results Geometric mean concentrations of blood cadmium and AMH were 0.97 μg/L and 3.02 ng/ml, respectively. Total association between cadmium and AMH was statistically significant (adjusted coefficient = - 0.34 (0.15), p = 0.02). After stratification, the only age group with a negative association between cadmium and AMH were the women raging between 30 and 35 years (adjusted coefficient = - 0.43 (0.18), p = 0.01). Conclusions The results of this study suggest that environmental exposure to cadmium may alter the AMH level of premenopausal women, depending on their age group.
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Affiliation(s)
- Yu Min Lee
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea
| | - Hye Won Chung
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea.,2Department of Obstetrics and Gynecology, School of Medicine, Ewha Womans University, Seoul, South Korea
| | - Kyungah Jeong
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea.,2Department of Obstetrics and Gynecology, School of Medicine, Ewha Womans University, Seoul, South Korea
| | - Yeon-Ah Sung
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea.,3Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, South Korea
| | - Hyejin Lee
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea.,3Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, South Korea
| | - Shinhee Ye
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea
| | - Eun-Hee Ha
- 1Department of Occupational and Environmental Medicine, Ewha Womans University School of Medicine, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985 Republic of Korea
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Kinoshita C, Aoyama K, Nakaki T. Neuroprotection afforded by circadian regulation of intracellular glutathione levels: A key role for miRNAs. Free Radic Biol Med 2018; 119:17-33. [PMID: 29198727 DOI: 10.1016/j.freeradbiomed.2017.11.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/21/2017] [Accepted: 11/27/2017] [Indexed: 01/17/2023]
Abstract
Circadian rhythms are approximately 24-h oscillations of physiological and behavioral processes that allow us to adapt to daily environmental cycles. Like many other biological functions, cellular redox status and antioxidative defense systems display circadian rhythmicity. In the central nervous system (CNS), glutathione (GSH) is a critical antioxidant because the CNS is extremely vulnerable to oxidative stress; oxidative stress, in turn, causes several fatal diseases, including neurodegenerative diseases. It has long been known that GSH level shows circadian rhythm, although the mechanism underlying GSH rhythm production has not been well-studied. Several lines of recent evidence indicate that the expression of antioxidant genes involved in GSH homeostasis as well as circadian clock genes are regulated by post-transcriptional regulator microRNA (miRNA), indicating that miRNA plays a key role in generating GSH rhythm. Interestingly, several reports have shown that alterations of miRNA expression as well as circadian rhythm have been known to link with various diseases related to oxidative stress. A growing body of evidence implicates a strong correlation between antioxidative defense, circadian rhythm and miRNA function, therefore, their dysfunctions could cause numerous diseases. It is hoped that continued elucidation of the antioxidative defense systems controlled by novel miRNA regulation under circadian control will advance the development of therapeutics for the diseases caused by oxidative stress.
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Affiliation(s)
- Chisato Kinoshita
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Koji Aoyama
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Toshio Nakaki
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan.
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Xiao B, Chen TM, Zhong Y. Possible molecular mechanism underlying cadmium-induced circadian rhythms disruption in zebrafish. Biochem Biophys Res Commun 2016; 481:201-205. [DOI: 10.1016/j.bbrc.2016.10.081] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 10/22/2016] [Indexed: 12/16/2022]
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Pedrini-Martha V, Niederwanger M, Kopp R, Schnegg R, Dallinger R. Physiological, Diurnal and Stress-Related Variability of Cadmium-Metallothionein Gene Expression in Land Snails. PLoS One 2016; 11:e0150442. [PMID: 26935042 PMCID: PMC4774997 DOI: 10.1371/journal.pone.0150442] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 02/15/2016] [Indexed: 12/04/2022] Open
Abstract
The terrestrial Roman snail Helix pomatia has successfully adapted to strongly fluctuating conditions in its natural soil habitat. Part of the snail’s stress defense strategy is its ability to express Metallothioneins (MTs). These are multifunctional, cysteine-rich proteins that bind and inactivate transition metal ions (Cd2+, Zn2+, Cu+) with high affinity. In Helix pomatia a Cadmium (Cd)-selective, inducible Metallothionein Isoform (CdMT) is mainly involved in detoxification of this harmful metal. In addition, the snail CdMT has been shown to also respond to certain physiological stressors. The aim of the present study was to investigate the physiological and diurnal variability of CdMT gene expression in snails exposed to Cd and non-metallic stressors such as desiccation and oxygen depletion. CdMT gene expression was upregulated by Cd exposure and desiccation, whereas no significant impact on the expression of CdMT was measured due to oxygen depletion. Overall, Cd was clearly more effective as an inducer of the CdMT gene expression compared to the applied non-metallic stressors. In unexposed snails, diurnal rhythmicity of CdMT gene expression was observed with higher mRNA concentrations at night compared to daytime. This rhythmicity was severely disrupted in Cd-exposed snails which exhibited highest CdMT gene transcription rates in the morning. Apart from diurnal rhythmicity, feeding activity also had a strong impact on CdMT gene expression. Although underlying mechanisms are not completely understood, it is clear that factors increasing MT expression variability have to be considered when using MT mRNA quantification as a biomarker for environmental stressors.
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Affiliation(s)
- Veronika Pedrini-Martha
- Department of Ecophysiology, Division of Zoology, University of Innsbruck, Innsbruck, Tirol, Austria
- * E-mail: (RD); (VPM)
| | - Michael Niederwanger
- Department of Ecophysiology, Division of Zoology, University of Innsbruck, Innsbruck, Tirol, Austria
| | - Renate Kopp
- Department of Ecophysiology, Division of Zoology, University of Innsbruck, Innsbruck, Tirol, Austria
| | - Raimund Schnegg
- Department of Ecophysiology, Division of Zoology, University of Innsbruck, Innsbruck, Tirol, Austria
| | - Reinhard Dallinger
- Department of Ecophysiology, Division of Zoology, University of Innsbruck, Innsbruck, Tirol, Austria
- * E-mail: (RD); (VPM)
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Navigatore-Fonzo LS, Delgado SM, Gimenez MS, Anzulovich AC. Daily rhythms of catalase and glutathione peroxidase expression and activity are endogenously driven in the hippocampus and are modified by a vitamin A-free diet. Nutr Neurosci 2014; 17:21-30. [PMID: 23485553 DOI: 10.1179/1476830513y.0000000062] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Alterations in enzymatic antioxidant defense systems lead to a deficit of cognitive functions and altered hippocampal synaptic plasticity. The objectives of this study were to investigate endogenous rhythms of catalase (CAT) and glutathione peroxidase (GPx) expression and activity, as well as CREB1 mRNA, in the rat hippocampus, and to evaluate to which extent the vitamin A deficiency could affect those temporal patterns. METHODS Rats from control and vitamin A-deficient (VAD) groups received a diet containing 4000 IU of vitamin A/kg diet, or the same diet devoid of vitamin A, respectively, during 3 months. Rats were maintained under 12-hour-dark conditions, during 10 days before the sacrifice. Circadian rhythms of CAT, GPx, RXRγ, and CREB1 mRNA levels were determined by reverse transcriptrase polymerase chain reaction in hippocampus samples isolated every 4 hours during a 24-hour period. CAT and GPx enzymatic activities were also determined by kinetic assays. Regulatory regions of clock and antioxidant enzymes genes were scanned for E-box, RXRE, and CRE sites. RESULTS E-box, RXRE, and CRE sites were found on regulatory regions of GPx and CAT genes, which display a circadian expression in the rat hippocampus. VAD phase shifted CAT, GPx, and RXRγ endogenous rhythms without affecting circadian expression of CREB1. DISCUSSION CAT and GPx expression and enzymatic activity are circadian in the rat hippocampus. The VAD affected the temporal patterns antioxidant genes expression, probably by altering circadian rhythms of its RXR receptors and clock factors; thus, it would impair the temporal orchestration of hippocampal daily cognitive performance.
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Lafuente A. The hypothalamic–pituitary–gonadal axis is target of cadmium toxicity. An update of recent studies and potential therapeutic approaches. Food Chem Toxicol 2013; 59:395-404. [DOI: 10.1016/j.fct.2013.06.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 06/13/2013] [Accepted: 06/15/2013] [Indexed: 12/11/2022]
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Jiménez-Ortega V, Cano Barquilla P, Fernández-Mateos P, Cardinali DP, Esquifino AI. Cadmium as an endocrine disruptor: correlation with anterior pituitary redox and circadian clock mechanisms and prevention by melatonin. Free Radic Biol Med 2012; 53:2287-97. [PMID: 23085516 DOI: 10.1016/j.freeradbiomed.2012.10.533] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 10/09/2012] [Accepted: 10/10/2012] [Indexed: 11/29/2022]
Abstract
To examine the effect of a low dose of cadmium (Cd) as an endocrine disruptor, male Wistar rats received CdCl2 (5ppm Cd) in drinking water or drinking water alone. After 1 month, the rats were euthanized at one of six time intervals around the clock and the 24-h pattern of adenohypophysial prolactin (PRL) synthesis and release, lipid peroxidation, and redox enzyme and metallothionein (MT) gene expression was examined. Cd suppressed 24-h rhythmicity in expression of the PRL gene and in circulating PRL by increasing them at early photophase only, in correlation with an augmented pituitary lipid peroxidation and redox enzyme expression. CdCl2 treatment effectively disrupted the 24-h variation in expression of every pituitary parameter tested except for MT-3. In a second experiment the effect of melatonin (3μg/ml in drinking water) was assessed at early photophase, the time of maximal endocrine-disrupting effect of Cd. Melatonin treatment blunted the effect of Cd on PRL synthesis and release, decreased Cd-induced lipid peroxidation, and counteracted the effect of Cd on expression of most redox enzymes. A third experiment was performed to examine whether melatonin could counteract Cd-induced changes in the 24-h pattern of pituitary circadian clock gene expression and plasma PRL, luteinizing hormone (LH), thyrotropin (TSH), and corticosterone levels. Rats receiving CdCl2 exhibited a suppressed daily rhythm of Clock expression and a significant disruption in daily rhythms of pituitary Bmal1, Per1, Per2, Cry1, and Cry2. The coadministration of melatonin restored rhythmicity in Clock and Bmal1 expression but shifted the maxima in pituitary Per1, Cry1, and Cry2 expression to the scotophase. Melatonin also counteracted the effect of Cd on 24-h rhythmicity of circulating PRL, LH, TSH, and corticosterone. The results highlight the occurrence of a significant endocrine disruptor effect of a low dose of Cd. Generally melatonin counteracted the effects of Cd and ameliorated partially the circadian disruption caused by the pollutant.
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Affiliation(s)
| | | | - Pilar Fernández-Mateos
- Department of Biochemistry and Molecular Biology III; Department of Cellular Biology, Faculty of Medicine, Universidad Complutense, Madrid 28040, Spain
| | - Daniel P Cardinali
- Department of Teaching & Research, Faculty of Medical Sciences, Pontificia Universidad Católica Argentina, 1107 Buenos Aires, Argentina; Department of Physiology, Faculty of Medicine, University of Buenos Aires, 1121 Buenos Aires, Argentina.
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Jang YS, Lee MH, Lee SH, Bae K. Cu/Zn superoxide dismutase is differentially regulated in period gene-mutant mice. Biochem Biophys Res Commun 2011; 409:22-7. [DOI: 10.1016/j.bbrc.2011.04.099] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 04/21/2011] [Indexed: 10/18/2022]
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Jiménez-Ortega V, Cano-Barquilla P, Scacchi PA, Cardinali DP, Esquifino AI. Cadmium-Induced Disruption in 24-h Expression of Clock and Redox Enzyme Genes in Rat Medial Basal Hypothalamus: Prevention by Melatonin. Front Neurol 2011; 2:13. [PMID: 21442002 PMCID: PMC3062465 DOI: 10.3389/fneur.2011.00013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 02/24/2011] [Indexed: 11/30/2022] Open
Abstract
In a previous study we reported that a low daily p.o. dose of cadmium (Cd) disrupted the circadian expression of clock and redox enzyme genes in rat medial basal hypothalamus (MBH). To assess whether melatonin could counteract Cd activity, male Wistar rats (45 days of age) received CdCl2 (5 ppm) and melatonin (3 μg/mL) or vehicle (0.015% ethanol) in drinking water. Groups of animals receiving melatonin or vehicle alone were also included. After 1 month, MBH mRNA levels were measured by real-time PCR analysis at six time intervals in a 24-h cycle. In control MBH Bmal1 expression peaked at early scotophase, Per1 expression at late afternoon, and Per2 and Cry2 expression at mid-scotophase, whereas neither Clock nor Cry1 expression showed significant 24-h variations. This pattern was significantly disrupted (Clock, Bmal1) or changed in phase (Per1, Per2, Cry2) by CdCl2 while melatonin counteracted the changes brought about by Cd on Per1 expression only. In animals receiving melatonin alone the 24-h pattern of MBH Per2 and Cry2 expression was disrupted. CdCl2 disrupted the 24-h rhythmicity of Cu/Zn- and Mn-superoxide dismutase (SOD), nitric oxide synthase (NOS)-1, NOS-2, heme oxygenase (HO)-1, and HO-2 gene expression, most of the effects being counteracted by melatonin. In particular, the co-administration of melatonin and CdCl2 increased Cu/Zn-SOD gene expression and decreased that of glutathione peroxidase (GPx), glutathione reductase (GSR), and HO-2. In animals receiving melatonin alone, significant increases in mean Cu/Zn and Mn-SOD gene expression, and decreases in that of GPx, GSR, NOS-1, NOS-2, HO-1, and HO-2, were found. The results indicate that the interfering effect of melatonin on the activity of a low dose of CdCl2 on MBH clock and redox enzyme genes is mainly exerted at the level of redox enzyme gene expression.
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Affiliation(s)
- Vanesa Jiménez-Ortega
- Departamento de Bioquímica y Biología Molecular III, Universidad Complutense Facultad de Medicina, Spain
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Modulatory Effects of Melatonin on Cadmium-Induced Changes in Biogenic Amines in Rat Hypothalamus. Neurotox Res 2011; 20:240-9. [DOI: 10.1007/s12640-010-9237-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 12/21/2010] [Accepted: 12/23/2010] [Indexed: 01/14/2023]
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