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Lessi F, Morelli M, Aretini P, Menicagli M, Franceschi S, Pasqualetti F, Gambacciani C, Di Stefano A, Santonocito O, Mazzanti CM. P14.01.B Isolation and characterization of circulating tumor cells in a glioblastoma case with recurrence at distance and correlation with tumor mutational status. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Circulating Tumor Cells (CTCs) are considered to be one of the important causes of tumor recurrence and distant metastasis. For many years, glioblastoma (GB) was thought to be restricted to the brain. Nevertheless, a growing body of evidence indicates that, like many other cancers, hematogenic dissemination is a reality. The absence of a procedural uniformity in literature prompted us to develop an innovative and sensitive method to obtain CTCs in GB. Our aim is to define the genetic background of single CTCs compared with the primary GB tumor and its recurrence to assess whether or not their presence in the peripheral circulation correlates with GB migration and dissemination.
Material and Methods
CTCs were enriched from whole blood of one patient with recurrent GB with Parsortix Cell Separation System and analysed on DEPArray system. After that, CTCs Copy Number Aberrations (CNAs) and sequencing analysis was performed to compare CTCs genetic background with the same patient’s primary and recurrence tissues, analysed by NextSeq 500 (whole exome sequencing).
Results
We obtained 211 mutations in common between primary and recurrence tumor. Among these, three somatic mutations (c.430 G>A in PRKCB gene, c.815 C>T in TBX1 gene and c.1554 T>G in COG5 gene) were selected to investigate their presence in recurrence CTCs. Almost all of the sorted CTCs (9/13) had at least one of the mutations tested.
Conclusion
In confirmation of the hypothesis, the CTCs detected in the patient's blood were actually cancer cells deriving from GB tumor.
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Affiliation(s)
- F Lessi
- Fondazione Pisana per la Scienza , San Giuliano Terme , Italy
| | - M Morelli
- Fondazione Pisana per la Scienza , San Giuliano Terme , Italy
| | - P Aretini
- Fondazione Pisana per la Scienza , San Giuliano Terme , Italy
| | - M Menicagli
- Fondazione Pisana per la Scienza , San Giuliano Terme , Italy
| | - S Franceschi
- Fondazione Pisana per la Scienza , San Giuliano Terme , Italy
| | - F Pasqualetti
- Azienda Ospedaliera Universitaria Pisana , Pisa , Italy
- University of Oxford , Oxford , United Kingdom
| | - C Gambacciani
- Spedali Riuniti di Livorno—USL Toscana Nord-Ovest , Livorno , Italy
| | - A Di Stefano
- Spedali Riuniti di Livorno—USL Toscana Nord-Ovest , Livorno , Italy
| | - O Santonocito
- Spedali Riuniti di Livorno—USL Toscana Nord-Ovest , Livorno , Italy
| | - C M Mazzanti
- Fondazione Pisana per la Scienza , San Giuliano Terme , Italy
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Cetani F, Pardi E, Aretini P, Saponaro F, Borsari S, Mazoni L, Apicella M, Civita P, La Ferla M, Caligo MA, Lessi F, Mazzanti CM, Torregrossa L, Oppo A, Marcocci C. Correction to: Whole exome sequencing in familial isolated primary hyperparathyroidism. J Endocrinol Invest 2020; 43:399. [PMID: 31559585 DOI: 10.1007/s40618-019-01118-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Unfortunately, the 13th author name has been published incorrectly in the original publication.
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Affiliation(s)
- F Cetani
- University Hospital of Pisa, Endocrine Unit 2, Via Paradisa 2, 56124, Pisa, Italy.
| | - E Pardi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - P Aretini
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - F Saponaro
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - S Borsari
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - L Mazoni
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - M Apicella
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - P Civita
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - M La Ferla
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - M A Caligo
- Molecular Genetics Unit, Department of Laboratory Medicine, University Hospital of Pisa, Pisa, Italy
| | - F Lessi
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - C M Mazzanti
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - L Torregrossa
- Division of Surgical Pathology, University Hospital of Pisa, Pisa, Italy
| | - A Oppo
- Endocrinology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - C Marcocci
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Cetani F, Pardi E, Aretini P, Saponaro F, Borsari S, Mazoni L, Apicella M, Civita P, La Ferla M, Caligo MA, Lessi F, Mazzanti CM, Torregossa L, Oppo A, Marcocci C. Whole exome sequencing in familial isolated primary hyperparathyroidism. J Endocrinol Invest 2020; 43:231-245. [PMID: 31486992 DOI: 10.1007/s40618-019-01107-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 08/29/2019] [Indexed: 12/14/2022]
Abstract
PURPOSE Familial isolated hyperparathyroidism (FIHP) is a rare inherited disease accounting for 1% of all cases of primary hyperparathyroidism (PHPT). It is genetically heterogeneous being associated with mutations in different genes, including MEN1, CDC73, CASR, and recently GCM2. The aim of the study was to further investigate the molecular pathogenesis in Italian FIHP kindreds. METHODS We used whole exome sequencing (WES) in the probands of seven unrelated FIHP kindreds. We carried out a separate family-based exome analysis in a large family characterized by the co-occurrence of PHPT with multiple tumors apparently unrelated to the disease. Selected variants were also screened in 18 additional FIHP kindreds. The clinical, biochemical, and pathological characteristics of the families were also investigated. RESULTS Three different variants in GCM2 gene were found in two families, but only one (p.Tyr394Ser), already been shown to be pathogenic in vitro, segregated with the disease. Six probands carried seven heterozygous missense mutations segregating with the disease in the FAT3, PARK2, HDAC4, ITPR2 and TBCE genes. A genetic variant in the APC gene co-segregating with PHPT (p.Val530Ala) was detected in a family whose affected relatives had additional tumors, including colonic polyposis. CONCLUSION We confirm the role of GCM2 germline mutations in the pathogenesis of FIHP, although at a lower rate than in the previous WES study. Further studies are needed to establish the prevalence and the role in the predisposition to FIHP of the novel variants in additional genes.
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Affiliation(s)
- F Cetani
- University Hospital of Pisa, Endocrine Unit 2, Via Paradisa 2, 56124, Pisa, Italy.
| | - E Pardi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - P Aretini
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - F Saponaro
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - S Borsari
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - L Mazoni
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - M Apicella
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - P Civita
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - M La Ferla
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - M A Caligo
- Molecular Genetics Unit, Department of Laboratory Medicine, University Hospital of Pisa, Pisa, Italy
| | - F Lessi
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - C M Mazzanti
- Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - L Torregossa
- Division of Surgical Pathology, University Hospital of Pisa, Pisa, Italy
| | - A Oppo
- Endocrinology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - C Marcocci
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Lessi F, Scatena C, Aretini P, Menicagli M, Franceschi S, Naccarato AG, Mazzanti CM. Molecular profiling of microinvasive breast cancer microenvironment progression. J Transl Med 2019; 17:187. [PMID: 31159827 PMCID: PMC6547528 DOI: 10.1186/s12967-019-1936-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 05/24/2019] [Indexed: 12/15/2022] Open
Abstract
Background Tumors develop by progression through a series of stages. Every cell of the tumor microenvironment is constantly changing in the flow of the cancer progression. It has become clear in recent years that stroma is essential for tumor maintenance and growth. Here, we aimed to give a chronological order of gene expression changes given in the dynamical framework of microinvasive breast cancer microenvironment. Methods RNA-seq was performed on seven microinvasive breast cancers. For each of them we microdissected seven different portions of the tumor, four related to the breast epithelium and three to the stroma. Breast epithelium was chronologically subdivided in normal breast epithelium (NBE), carcinoma in situ (CIS), emerging invasive fingers (EIF) and invasive breast cancer (IBC). For each of the breast epithelium subdivisions we collected the adjacent stroma (S): S-NBE, S-EIF and S-IBC. Results The overall differentially expressed genes (DEGs) in all the compartments were analysed and evaluated to understand the pathways involved in tumor progression. Then we analysed the DEGs of the epithelial and stromal portions in comparison with the normal portions. We observed that the stromal cells are necessary for the development and the maintenance of the tumor, especially in tumor progression. Moreover the most important genes involved in the main metabolic pathways were analysed and the communications within the different cell compartments were highlighted. Conclusions As a future perspective, a deeply study of the identified key genes, particularly in the stromal cells, will be crucial to develop an anticancer therapy that is undergoing a conversion from a cancer cell-centric strategy to a stroma-centric strategy, more genomically stable. Electronic supplementary material The online version of this article (10.1186/s12967-019-1936-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- F Lessi
- Genomic Section, Fondazione Pisana per la Scienza ONLUS, via Ferruccio Giovannini, 13, S. Giuliano Terme (PI), 56017, Pisa, Italy.
| | - C Scatena
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - P Aretini
- Genomic Section, Fondazione Pisana per la Scienza ONLUS, via Ferruccio Giovannini, 13, S. Giuliano Terme (PI), 56017, Pisa, Italy
| | - M Menicagli
- Genomic Section, Fondazione Pisana per la Scienza ONLUS, via Ferruccio Giovannini, 13, S. Giuliano Terme (PI), 56017, Pisa, Italy
| | - S Franceschi
- Genomic Section, Fondazione Pisana per la Scienza ONLUS, via Ferruccio Giovannini, 13, S. Giuliano Terme (PI), 56017, Pisa, Italy
| | - A G Naccarato
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - C M Mazzanti
- Genomic Section, Fondazione Pisana per la Scienza ONLUS, via Ferruccio Giovannini, 13, S. Giuliano Terme (PI), 56017, Pisa, Italy
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Lessi F, Scatena C, Aretini P, Menicagli M, Franceschi S, Ortenzi V, La Ferla M, De Gregorio V, Bevilacqua G, Naccarato GA, Mazzanti CM. Abstract P1-03-07: The "panta rhei" of breast cancer: Gene expression timeline analysis during progression of microinvasive breast cancer microenvironment. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-03-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background. Tumors develop by progression through a series of stages. It is now widely accepted that cancer is attributed to the accumulation of genetic alterations in cells. Every cells of the tumor microenvironment is constantly changing in the flow of the cancer progression. A number of genes have been identified as having functions in various stages of progression in promoting cancer progression in experimental models. However, the association between gene expression alterations and resulting phenotypic alterations with respect to the aggressiveness and migration potential of cancer cells is not fully understood. Therefore, elucidation of genotype–phenotype correlation will be required to further understand the complex process of progression and invasion. All tumors require at least some stroma to meet their needs of nutrition, waste removal, and structure. It has become clear in recent years that stroma is essential for tumor maintenance and growth and has potential as a therapeutic target. Here, we aimed to give a chronological order of gene expression changes given in the dynamical framework of microinvasive breast cancer microenvironment.
Materials and Methods. RNA-seq (Ion Proton technology) was performed on three microinvasive breast cancers, applying new modifications to the usual protocol. For each of them we microdissected 7 different portions of the tumor (around 200 cells), 4 related to the breast epithelium and 3 to the stroma. The regions were selected on the basis of their grade of progression. Breast epithelium was chronologically subdivided in normal breast epithelium (NBE), carcinoma in situ (CIS), emerging invasive fingers (EIF) and invasive breast cancer (IBC). For each of the breast epithelium subdivisions we collected the adjacent stroma (S) except for the in situ portion: S-NBE, S-EIF and S-IBC.
Results: Whole transcriptome analysis performed on each microdissected regions reveals a series of gene expression changes occurring during cancer progression in the breast epithelium along with the adjacent stroma. The dendogram analysis, based on the whole gene expression data of each patient revealed a perfect group organization of the various microdissected portions of stroma and mammary epithelium. Within the dendogram, the organization of Normal, In Situ, EIF and Invasive tissue respected perfectly the biological assumptions.
Conclusions: More thorough analyses are needed to give a clear view of the flow of molecular events starting from the normal breast epithelium to the microinvasive stage, as well as to give a better understanding of the stroma-epithelium molecular means of communication. The analysis of all the molecular changes occuring in the breast epithelium and in the stroma of microinvasive cancer could lead to the development of new therapeutic targets.
Citation Format: Lessi F, Scatena C, Aretini P, Menicagli M, Franceschi S, Ortenzi V, La Ferla M, De Gregorio V, Bevilacqua G, Naccarato GA, Mazzanti CM. The "panta rhei" of breast cancer: Gene expression timeline analysis during progression of microinvasive breast cancer microenvironment. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-03-07.
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Affiliation(s)
- F Lessi
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - C Scatena
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - P Aretini
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - M Menicagli
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - S Franceschi
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - V Ortenzi
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - M La Ferla
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - V De Gregorio
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - G Bevilacqua
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - GA Naccarato
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
| | - CM Mazzanti
- Pisa Science Foundation, Pisa, Italy; University of Pisa, Pisa, Italy
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França RT, Da Silva AS, Loretti AP, Mazzanti CM, Lopes ST. Canine rangeliosis due to Rangelia vitalii: From first report in Brazil in 1910 to current day – A review. Ticks Tick Borne Dis 2014; 5:466-74. [DOI: 10.1016/j.ttbdis.2014.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 04/02/2014] [Accepted: 04/13/2014] [Indexed: 10/25/2022]
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Abdalla FH, Schmatz R, Cardoso AM, Carvalho FB, Baldissarelli J, de Oliveira JS, Rosa MM, Gonçalves Nunes MA, Rubin MA, da Cruz IBM, Barbisan F, Dressler VL, Pereira LB, Schetinger MRC, Morsch VM, Gonçalves JF, Mazzanti CM. Quercetin protects the impairment of memory and anxiogenic-like behavior in rats exposed to cadmium: Possible involvement of the acetylcholinesterase and Na(+),K(+)-ATPase activities. Physiol Behav 2014; 135:152-67. [PMID: 24952260 DOI: 10.1016/j.physbeh.2014.06.008] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 06/10/2014] [Accepted: 06/11/2014] [Indexed: 12/26/2022]
Abstract
The present study investigated the effects of quercetin in the impairment of memory and anxiogenic-like behavior induced by cadmium (Cd) exposure. We also investigated possible alterations in acetylcholinesterase (AChE), Na(+),K(+)-ATPase and δ-aminolevulinate dehydratase (δ-ALA-D) activities as well as in oxidative stress parameters in the CNS. Rats were exposed to Cd (2.5mg/kg) and quercetin (5, 25 or 50mg/kg) by gavage for 45days. Animals were divided into eight groups (n=10-14): saline/control, saline/Querc 5mg/kg, saline/Querc 25mg/kg, saline/Querc 50mg/kg, Cd/ethanol, Cd/Querc 5mg/kg, Cd/Querc 25mg/kg and Cd/Querc 50mg/kg. Results demonstrated that Cd impaired memory has an anxiogenic effect. Quercetin prevented these harmful effects induced by Cd. AChE activity decreased in the cerebral cortex and hippocampus and increased in the hypothalamus of Cd-exposed rats. The Na(+),K(+)-ATPase activity decreased in the cerebral cortex, hippocampus and hypothalamus of Cd-exposed rats. Quercetin prevented these effects in AChE and Na(+),K(+)-ATPase activities. Reactive oxygen species production, thiobarbituric acid reactive substance levels, protein carbonyl content and double-stranded DNA fractions increased in the cerebral cortex, hippocampus and hypothalamus of Cd-exposed rats. Quercetin totally or partially prevents these effects caused by Cd. Total thiols (T-SHs), reduced glutathione (GSH), and reductase glutathione (GR) activities decreased and glutathione S-transferase (GST) activity increased in Cd exposed rats. Co-treatment with quercetin prevented reduction in T-SH, GSH, and GR activities and the rise of GST activity. The present findings show that quercetin prevents alterations in oxidative stress parameters as well as AChE and Na(+),K(+)-ATPase activities, consequently preventing memory impairment and anxiogenic-like behavior displayed by Cd exposure. These results may contribute to a better understanding of the neuroprotective role of quercetin, emphasizing the influence of this flavonoid in the diet for human health, possibly preventing brain injury associated with Cd intoxication.
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Affiliation(s)
- Fátima H Abdalla
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil; Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Setor de Bioquímica e Estresse Oxidativo do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
| | - Roberta Schmatz
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
| | - Andréia M Cardoso
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Fabiano B Carvalho
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil; Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Setor de Bioquímica e Estresse Oxidativo do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Jucimara Baldissarelli
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Juliane Sorraila de Oliveira
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Michelle M Rosa
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Matheus Augusto Gonçalves Nunes
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Maribel A Rubin
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Ivana B M da Cruz
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Fernanda Barbisan
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Valderi L Dressler
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Luciane B Pereira
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Maria Rosa C Schetinger
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Vera M Morsch
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Jamile F Gonçalves
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Cinthia M Mazzanti
- Programa de Pós Graduação em Ciências Biológicas: Bioquímica Toxicológica, Setor de Bioquímica e Estresse Oxidativo do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
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da Silva ARH, Moreira LDR, Brum EDS, de Freitas ML, Boligon AA, Athayde ML, Roman SS, Mazzanti CM, Brandão R. Biochemical and hematological effects of acute and sub-acute administration to ethyl acetate fraction from the stem bark Scutia buxifolia Reissek in mice. J Ethnopharmacol 2014; 153:908-916. [PMID: 24704489 DOI: 10.1016/j.jep.2014.03.063] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 03/25/2014] [Accepted: 03/27/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Scutia buxifolia is a native tree of Southern Brazil, Uruguay, and Argentina, which is popularly known as "coronilha" and it is used as a cardiotonic, antihypertensive and diuretic substance. The aim of this study was to assess the acute and sub-acute toxicity of the ethyl acetate fraction from the stem bark Scutia buxifolia in male and female mice. MATERIALS AND METHODS The toxicity studies were based on the guidelines of the Organization for Economic Cooperation and Development (OECD-guidelines 423 and 407). In an acute study, a single dose of 2000 mg/kg of Scutia buxifolia was administered orally to male and female mice. Mortality, behavioral changes, and biochemical and hematological parameters were evaluated. In the sub-acute study, Scutia buxifolia was administered orally to male and female mice at doses of 100, 200, and 400mg/kg/day for 28 days. Behavioral changes and biochemical, hematological, and histological analysis were evaluated. RESULTS The acute administration of Scutia buxifolia did not cause changes in behavior or mortality. Male and female mice presented decreased levels of platelets. Female mice presented decreased levels of leukocytes. On the other hand, in a sub-acute toxicity study, we observed no behavioral changes in male or female mice. Our results demonstrated a reduction in glucose levels in male mice treated to 200 and 400mg/kg of Scutia buxifolia. Aspartate aminotransferase (ASAT) activity was increased by Scutia buxifolia at 400mg/kg in male mice. In relation to the hematological parameters, male mice presented a reduction in hemoglobin (HGB) and hematocrit (HCT) when treated to 400mg/kg of plant fraction. Female mice showed no change in these parameters. Histopathological examination of liver tissue showed slight abnormalities that were consistent with the biochemical variations observed. CONCLUSION Scutia buxifolia, after acute administration, may be classified as safe (category 5), according to the OECD guide. However, the alterations observed, after sub-acute administration with high doses of ethyl acetate fraction from the stem bark Scutia buxifolia, suggest that repeated administration of this fraction plant can cause adverse hepatic, renal, and hematological effects.
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Affiliation(s)
- Andreia R H da Silva
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Laís da R Moreira
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Evelyne da S Brum
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Mayara L de Freitas
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Aline A Boligon
- Departamento de Farmácia Industrial, Laboratório de Pesquisa Fitoquímica, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Margareth L Athayde
- Departamento de Farmácia Industrial, Laboratório de Pesquisa Fitoquímica, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Silvane S Roman
- Departamento de Ciências da Saúde, Universidade Regional Integrada do Alto Uruguai e das Missões, Campus de Erechim, Erechim, RS, Brazil
| | - Cinthia M Mazzanti
- Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Ricardo Brandão
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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9
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Beckmann DV, Carvalho FB, Mazzanti CM, dos Santos RP, Andrades AO, Aiello G, Rippilinger A, Graça DL, Abdalla FH, Oliveira LS, Gutierres JM, Schetinger MRC, Mazzanti A. Neuroprotective role of quercetin in locomotor activities and cholinergic neurotransmission in rats experimentally demyelinated with ethidium bromide. Life Sci 2014; 103:79-87. [DOI: 10.1016/j.lfs.2014.03.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 03/20/2014] [Accepted: 03/31/2014] [Indexed: 11/30/2022]
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10
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Gutierres JM, Carvalho FB, Schetinger MRC, Marisco P, Agostinho P, Rodrigues M, Rubin MA, Schmatz R, da Silva CR, de P. Cognato G, Farias JG, Signor C, Morsch VM, Mazzanti CM, Bogo M, Bonan CD, Spanevello R. Anthocyanins restore behavioral and biochemical changes caused by streptozotocin-induced sporadic dementia of Alzheimer's type. Life Sci 2014; 96:7-17. [DOI: 10.1016/j.lfs.2013.11.014] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/26/2013] [Accepted: 11/14/2013] [Indexed: 12/20/2022]
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11
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Gutierres JM, Carvalho FB, Schetinger MRC, Agostinho P, Marisco PC, Vieira JM, Rosa MM, Bohnert C, Rubin MA, Morsch VM, Spanevello R, Mazzanti CM. Neuroprotective effect of anthocyanins on acetylcholinesterase activity and attenuation of scopolamine-induced amnesia in rats. Int J Dev Neurosci 2013; 33:88-97. [PMID: 24374256 DOI: 10.1016/j.ijdevneu.2013.12.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 12/15/2013] [Accepted: 12/16/2013] [Indexed: 11/24/2022] Open
Abstract
Anthocyanins are a group of natural phenolic compounds responsible for the color to plants and fruits. These compounds might have beneficial effects on memory and have antioxidant properties. In the present study we have investigated the therapeutic efficacy of anthocyanins in an animal model of cognitive deficits, associated to Alzheimer's disease, induced by scopolamine. We evaluated whether anthocyanins protect the effects caused by SCO on nitrite/nitrate (NOx) levels and Na(+),K(+)-ATPase and Ca(2+)-ATPase and acetylcholinesterase (AChE) activities in the cerebral cortex and hippocampus (of rats. We used 4 different groups of animals: control (CTRL), anthocyanins treated (ANT), scopolamine-challenged (SCO), and scopolamine+anthocyanins (SCO+ANT). After seven days of treatment with ANT (200mgkg(-1); oral), the animals were SCO injected (1mgkg(-1); IP) and were performed the behavior tests, and submitted to euthanasia. A memory deficit was found in SCO group, but ANT treatment prevented this impairment of memory (P<0.05). The ANT treatment per se had an anxiolytic effect. AChE activity was increased in both in cortex and hippocampus of SCO group, this effect was significantly attenuated by ANT (P<0.05). SCO decreased Na(+),K(+)-ATPase and Ca(2+)-ATPase activities in hippocampus, and ANT was able to significantly (P<0.05) prevent these effects. No significant alteration was found on NOx levels among the groups. In conclusion, the ANT is able to regulate cholinergic neurotransmission and restore the Na(+),K(+)-ATPase and Ca(2+)-ATPase activities, and also prevented memory deficits caused by scopolamine administration.
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Affiliation(s)
- Jessié M Gutierres
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil.
| | - Fabiano B Carvalho
- Setor de Bioquímica e Biologia Molecular do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Maria Rosa C Schetinger
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Paula Agostinho
- Center for Neuroscience and Cell Biology, Faculty of Medicine, Biochemistry Institute, University of Coimbra, 3004 Coimbra, Portugal
| | - Patricia C Marisco
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Juliano M Vieira
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Michele M Rosa
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Crystiani Bohnert
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Maribel A Rubin
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Vera M Morsch
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil
| | - Roselia Spanevello
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Campus Universitário, Capão do Leão, Pelotas RS 96010-900, Brazil
| | - Cinthia M Mazzanti
- Setor de Bioquímica e Biologia Molecular do Laboratório de Terapia Celular, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria RS 97105-900, Brazil.
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12
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Da Silva AS, França RT, Costa MM, Paim FC, Pimentel VC, Schmatz R, Jaques JA, Schetinger MRC, Mazzanti CM, Tonin AA, Monteiro SG, Lopes STA. Adenosine levels in serum and adenosine deaminase activity in blood cells of dogs infected by Rangelia vitalii. J Parasitol 2013; 99:1125-8. [PMID: 23777319 DOI: 10.1645/13-176.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Ecto-adenosinedeaminase (E-ADA) plays an important role in the production and differentiation of blood cells as well as in the control of extracellular adenosine levels. Infectious diseases can influence the synthesis of new cells or cause cell destruction, as occurs in canine rangeliosis, which results in anemia, thrombocytopenia, leukocytosis, and/or leukopenia. Thus, this study aimed to evaluate E-ADA activity in sera, erythrocytes, lymphocytes, and adenosine levels in sera samples of dogs infected by Rangelia vitalii. Twelve animals were divided into 2 groups: noninfected (n = 5) and infected by R. vitalii (n = 7). Animals were infected with 2 ml of blood containing the parasite, and parasitemia was estimated daily for 20 days by microscopic examination of peripheral blood smears. Blood collection was performed on days 0, 10, and 20 post-infection (PI) in order to evaluate the evolution of the disease. The blood collected was used to assess the activity of E-ADA. We observed an increase of E-ADA activity in sera (day 20 PI) and erythrocytes (days 10 and 20 PI) in the infected group (P < 0.05). E-ADA activity in lymphocytes was decreased on day 10, when the parasitemia was high, and increased after 20 days, when the number of circulating parasites was low. HPLC measured adenosine levels in the serum and found a reduction on days 10 and 20 PI. In conclusion, our results showed that E-ADA activity was altered in sera, lymphocytes, and erythrocytes of dogs experimentally infected by R. vitalii as well as the serum concentration of adenosine. These alterations may contribute to the pathogenesis of anemia and immune response in infected dogs.
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13
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Maciel RM, Costa MM, Martins DB, França RT, Schmatz R, Graça DL, Duarte MMMF, Danesi CC, Mazzanti CM, Schetinger MRC, Paim FC, Palma HE, Abdala FH, Stefanello N, Zimpel CK, Felin DV, Lopes STA. Antioxidant and anti-inflammatory effects of quercetin in functional and morphological alterations in streptozotocin-induced diabetic rats. Res Vet Sci 2013; 95:389-97. [PMID: 23706762 DOI: 10.1016/j.rvsc.2013.04.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 03/19/2013] [Accepted: 04/25/2013] [Indexed: 11/16/2022]
Abstract
The aim of this study was to investigate functional and morphological alterations caused by oxidative stress in streptozotocin (STZ)-induced diabetic rats and to evaluate the antioxidant effect of quercetin (QUE) in this disease. One hundred and thirty male Wistar rats, it were randomly distributed in 10 different experimental groups, with ten animals per group: Control Saline (CS), Control Ethanol (CE), Control QUE 5mg/kg (CQ5), Control QUE 25mg/kg (CQ25), Control QUE 50mg/kg (CQ50), Diabetic Saline (DS), Diabetic Ethanol (DE), Diabetic QUE 5mg/kg (DQ5), Diabetic QUE25 mg/kg (DQ25), Diabetic QUE 50mg/kg (DQ50). Therefore, hyperglycemia is directly involved in oxidative stress production, as well as in functional and morphological alterations caused by the excess of free radicals. QUE, specially at the dosage of 50mg/kg, can act as an antioxidant and anti-inflammatory agent, becoming a promising adjuvant in the treatment of diabetes mellitus.
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Affiliation(s)
- R M Maciel
- Laboratório de Análises Clínicas Veterinária - LACVet, Universidade Federal de Santa Maria, Av. Roraima no 1000, Cidade Universitária, Bairro Camobi, 97105-900 Santa Maria, RS, Brazil.
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14
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Wolkmer P, da Silva CB, Paim FC, Duarte MM, Castro V, Palma HE, França RT, Felin DV, Siqueira LC, Lopes ST, Schetinger MRC, Monteiro SG, Mazzanti CM. Pre-treatment with curcumin modulates acetylcholinesterase activity and proinflammatory cytokines in rats infected with Trypanosoma evansi. Parasitol Int 2013. [DOI: 10.1016/j.parint.2012.11.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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França RT, Da Silva AS, Costa MM, Paim FC, Soares JF, Labruna MB, Mazzanti CM, Lopes ST. Hematologic and bone marrow changes in dogs experimentally infected withRangelia vitalii. Vet Clin Pathol 2013; 42:31-9. [DOI: 10.1111/vcp.12023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raqueli T. França
- Department of Small Animals; Universidade Federal de Santa Maria (UFSM); Santa Maria-RS; Brazil
| | - Aleksandro S. Da Silva
- Department of Animal Science; Universidade do Estado de Santa Catarina (UDESC); Chapecó-SC; Brazil
| | - Marcio M. Costa
- Department of Small Animals; Universidade Federal de Santa Maria (UFSM); Santa Maria-RS; Brazil
| | - Francine C. Paim
- Department of Small Animals; Universidade Federal de Santa Maria (UFSM); Santa Maria-RS; Brazil
| | - João F. Soares
- Department of Veterinary Preventive Medicine and Animal Health; Universidade de São Paulo (USP); São Paulo-SP; Brazil
| | - Marcelo B. Labruna
- Department of Veterinary Preventive Medicine and Animal Health; Universidade de São Paulo (USP); São Paulo-SP; Brazil
| | - Cinthia M. Mazzanti
- Department of Small Animals; Universidade Federal de Santa Maria (UFSM); Santa Maria-RS; Brazil
| | - Sonia T.A. Lopes
- Department of Small Animals; Universidade Federal de Santa Maria (UFSM); Santa Maria-RS; Brazil
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16
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Wolkmer P, da Silva CB, Paim FC, Da Silva AS, Tavares KCS, Lazzarotto CR, Palma HE, Thomé GR, Miletti LC, Schetinger MRC, Lopes STA, Mazzanti CM. Biochemistry detection of acetylcholinesterase activity in Trypanosoma evansi and possible functional correlations. Exp Parasitol 2012; 132:546-9. [PMID: 22981718 DOI: 10.1016/j.exppara.2012.08.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 08/06/2012] [Accepted: 08/28/2012] [Indexed: 11/30/2022]
Abstract
Several chemical and immunohistochemical techniques can be used for the detection of acetylcholinesterase (AChE) activity. In this experiment we aimed to detect AChE activity in Trypanosoma evansi. For this, the parasites were isolated from the blood of experimentally infected rats using a DEA-cellulose column. Enzymatic activity was determined in trypomastigote forms at 0, 0.2, 0.4, 0.8 and 1.2 mg/mL of protein concentrations by a standard biochemical protocol. At all concentrations tested, the study showed that T. evansi expresses the enzyme AChE and its activity was proportional to the concentration of protein, ranging between 0.64 and 2.70 μmol of AcSCh/h. Therefore, we concluded that it is possible to biochemically detect AChE in T. evansi, an enzyme that may be associated with vital functions of the parasite and also can be related to chemotherapy treatments, as further discussed in this article.
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Affiliation(s)
- Patrícia Wolkmer
- Department of Chemistry, Universidade Federal de Santa Maria, Brazil.
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17
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Martins DB, Mazzanti CM, Costa MM, França R, Pagnoncelli M, Maciel RM, Schmatz R, Oliveira L, Morsch V, Facco G, Visentini D, Mann T, Mazzanti A, Lopes STA. Complete blood count and acetylcholinesterase activity of lymphocytes of demyelinated and ovariectomized rats treated with resveratrol. Immunopharmacol Immunotoxicol 2012; 34:983-90. [DOI: 10.3109/08923973.2012.682581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Paim CB, Paim FC, Da Silva AS, França RT, Costa MM, Leal CA, Soares JF, Labruna MB, Schetinger MR, Mazzanti A, Mazzanti CM, Monteiro SG, Lopes ST. Thrombocytopenia and platelet activity in dogs experimentally infected with Rangelia vitalii. Vet Parasitol 2012; 185:131-7. [DOI: 10.1016/j.vetpar.2011.09.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 09/26/2011] [Accepted: 09/28/2011] [Indexed: 11/29/2022]
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19
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Paim CBV, Da Silva AS, Paim FC, França RT, Costa MM, Souza VCG, Pimentel VC, Jaques JA, Mazzanti CM, Leal DBR, Monteiro SG, Schetinger MRC, Lopes STA. Activities of ectonucleotidases and adenosine deaminase in platelets of dogs experimentally infected with Rangelia vitalii. Exp Parasitol 2012; 131:252-7. [PMID: 22475775 DOI: 10.1016/j.exppara.2012.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 03/08/2012] [Accepted: 03/12/2012] [Indexed: 11/17/2022]
Abstract
Rangeliosis is a disease which affects dogs in Brazil, caused by a piroplasm known as Rangelia vitalii. This disease causes a lot of clinico-pathological features, including the coagulation disorders associated with bleeding. The cause of these changes has not yet been determined. Considering the association of purinergic system and hemostasis this study aimed to evaluate the activity of enzymes that hydrolyze ATP, ADP and AMP; and deamination of adenosine in platelets from dogs experimentally infected with R. vitalii. For this study, 12 healthy young dogs (females) were used, separated in two groups. Group A (n=5) were uninfected controls, and group B were experimentally infected with R. vitalii (n=7). After being inoculated with R. vitalii-infected blood, animals were monitored by blood smear examinations, which showed intra-erythrocytic forms of the parasite after five days post-inoculation (PI). Blood samples were collected to quantitate and separate platelets (Day 0, 12 and 21 PI) and to measure the enzymatic activities (Day 12 and 21 PI). The activity of NTPDase, 5'-nucleotidase and adenosine deaminase (ADA) was measured in platelets. A reduction (P<0.01) in the number of platelets was observed in R. vitalii-infected blood at Days 12 and 21 PI. At Day 12 PI, a reduction (P<0.01) in the hydrolysis of ATP, ADP and AMP, and deamination of adenosine was observed in dogs infected with R. vitalii. At Day 21 PI the ADA activity remained decreased, unlike the activity of NTPDase which increased (P<0.05). Based on these results we can conclude that ATP, ADP and AMP hydrolysis and adenosine deamination were altered in platelets of R. vitalii-infected dogs. Considering the importance of the purinergic system in hemostasis, it is believed that those changes contribute to the coagulation disorders and bleeding observed in R. vitalii-infected dogs and discussed in this manuscript.
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Da Silva AS, França RT, Costa MM, Paim CBV, Paim FC, Santos CMM, Flores EMM, Eilers TL, Mazzanti CM, Monteiro SG, do Amaral CH, Lopes STA. Influence of Rangelia vitalii (Apicomplexa: Piroplasmorida) on copper, iron, and zinc bloodstream levels in experimentally infected dogs. J Parasitol 2012; 98:1018-20. [PMID: 22409380 DOI: 10.1645/ge-2985.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The aim of this study was to evaluate the concentrations of copper, iron, and zinc in blood serum of dogs experimentally infected with Rangelia vitalii (n = 7) compared with uninfected controls (n = 5). Serum metal levels were determined in blood samples collected at days 0, 10, 15, and 20 post-infection (PI). Inductively coupled plasma optical emission spectrometry was used to measure the levels of copper, iron, and zinc. Significant differences (P < 0.05) were observed among groups PI. Increased levels of copper and decreased levels of iron and zinc were observed in the infected animals. The infection by R. vitalii may, therefore, alter the serum metal levels, resulting in metabolic disorders in dogs. These metals are directly involved in many enzymatic systems; accordingly, alterations in their blood concentrations may also influence the pathogenesis of disease.
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Affiliation(s)
- Aleksandro S Da Silva
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Brazil 97105-900.
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da Silva CB, Wolkmer P, Da Silva AS, Paim FC, Tonin AA, Castro VSP, V. Felin D, Schmatz R, Gonçalves JF, Badke MRT, Morsch VM, Mazzanti CM, Lopes STA. Cholinesterases as markers of the inflammatory process in rats infected with Leptospira interrogans serovar Icterohaemorrhagiae. J Med Microbiol 2012; 61:278-284. [DOI: 10.1099/jmm.0.035501-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Cássia B. da Silva
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
| | - Patrícia Wolkmer
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
| | - Aleksandro S. Da Silva
- Department of Microbiology and Parasitology, UFSM, Avenida Roraima 1000, Campus Universitário, Prédio 20, Sala 4220, 97105900, Santa Maria – RS, Brazil
| | - Francine C. Paim
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
| | - Alexandre A. Tonin
- Department of Microbiology and Parasitology, UFSM, Avenida Roraima 1000, Campus Universitário, Prédio 20, Sala 4220, 97105900, Santa Maria – RS, Brazil
| | - Verônica S. P. Castro
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
| | - Diandra V. Felin
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
| | - Roberta Schmatz
- Department of Chemistry, UFSM, Avenida Roraima 1000, Campus Universitário, Prédio 18, 97105900, Santa Maria – RS, Brazil
| | - Jamile F. Gonçalves
- Department of Chemistry, UFSM, Avenida Roraima 1000, Campus Universitário, Prédio 18, 97105900, Santa Maria – RS, Brazil
| | - Manoel R. T. Badke
- Department of Microbiology and Parasitology, UFSM, Avenida Roraima 1000, Campus Universitário, Prédio 20, Sala 4220, 97105900, Santa Maria – RS, Brazil
| | - Vera M. Morsch
- Department of Chemistry, UFSM, Avenida Roraima 1000, Campus Universitário, Prédio 18, 97105900, Santa Maria – RS, Brazil
| | - Cinthia M. Mazzanti
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
| | - Sonia T. A. Lopes
- Department of Small Animals, Universidade Federal de Santa Maria (UFSM), Avenida Roraima 1000, Campus Universitário, Hospital Veterinário, Sala 103, 97105-900, Santa Maria – RS, Brazil
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Wolkmer P, da Silva CB, Schmidt C, Mesko M, Traesel CK, da Silva AS, Cecco BS, Flores ÉMM, Monteiro SG, Mazzanti CM, dos Anjos Lopes ST. Trypanosoma evansi infection on levels of copper, iron, and zinc in the plasma of rats. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s00580-011-1397-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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23
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Ahmed M, Latif N, Khan RA, Ahmad A, Rocha JBT, Mazzanti CM, Bagatini MD, Morsch VM, Schetinger MRC. Enzymatic and biochemical characterization of Bungarus sindanus snake venom acetylcholinesterase. J Venom Anim Toxins Incl Trop Dis 2012. [DOI: 10.1590/s1678-91992012000200014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Castro VSP, Pimentel VC, Da Silva AS, Thomé GR, Wolkmer P, Castro JLC, Costa MM, da Silva CB, Oliveira DC, Alves SH, Schetinger MRC, Lopes STA, Mazzanti CM. Adenosine Deaminase Activity in Serum and Lymphocytes of Rats Infected with Sporothrix schenckii. Mycopathologia 2011; 174:31-9. [DOI: 10.1007/s11046-011-9511-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 11/22/2011] [Indexed: 12/30/2022]
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25
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Da Silva AS, Castro VS, Tonin AA, Brendler S, Costa MM, Jaques JA, Bertoletti B, Zanette RA, Raiser AG, Mazzanti CM, Lopes ST, Monteiro SG. Secnidazole for the treatment of giardiasis in naturally infected cats. Parasitol Int 2011; 60:429-32. [DOI: 10.1016/j.parint.2011.06.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 06/18/2011] [Accepted: 06/24/2011] [Indexed: 11/28/2022]
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Da Silva AS, França RT, Costa MM, Paim CB, Paim FC, Dornelles GL, Soares JF, Labruna MB, Mazzanti CM, Monteiro SG, Lopes ST. Experimental infection with Rangelia vitalii in dogs: Acute phase, parasitemia, biological cycle, clinical-pathological aspects and treatment. Exp Parasitol 2011; 128:347-52. [DOI: 10.1016/j.exppara.2011.04.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 04/16/2011] [Accepted: 04/28/2011] [Indexed: 10/18/2022]
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Tonin AA, Da Silva AS, Costa MM, Otto MA, Thomé GR, Tavares KS, Miletti LC, Leal MR, Lopes ST, Mazzanti CM, Monteiro SG, de La Rue ML. Diminazene aceturate associated with sodium selenite and vitamin E in the treatment of Trypanosoma evansi infection in rats. Exp Parasitol 2011; 128:243-9. [DOI: 10.1016/j.exppara.2011.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 03/02/2011] [Accepted: 03/15/2011] [Indexed: 11/27/2022]
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Da Silva AS, Wolkmer P, Nunes JT, Duck MR, Oliveira CB, Gressler LT, Costa MM, Zanette RA, Mazzanti CM, Lopes ST, Monteiro SG. Susceptibility of Trypanosoma evansi to cordycepin. Biomed Pharmacother 2011; 65:220-3. [DOI: 10.1016/j.biopha.2011.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 02/07/2011] [Indexed: 10/18/2022] Open
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da Silva AS, Monteiro SG, Gonçalves JF, Spanevello R, Oliveira CB, Costa MM, Jaques JA, Morsch VM, Schetinger MRC, Mazzanti CM, Lopes ST. Acetylcholinesterase activity and lipid peroxidation in the brain and spinal cord of rats infected with Trypanosoma evansi. Vet Parasitol 2011; 175:237-44. [DOI: 10.1016/j.vetpar.2010.10.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 09/13/2010] [Accepted: 10/11/2010] [Indexed: 11/27/2022]
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Da Silva AS, Monteiro SG, Gonçalves JF, Spanevello R, Schmatz R, Oliveira CB, Costa MM, França RT, Jaques JA, Schetinger MRC, Mazzanti CM, Lopes ST. Trypanosoma evansi: Immune response and acetylcholinesterase activity in lymphocytes from infected rats. Exp Parasitol 2011; 127:475-80. [DOI: 10.1016/j.exppara.2010.10.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 10/20/2010] [Accepted: 10/20/2010] [Indexed: 10/18/2022]
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Gonçalves JF, Fiorenza AM, Spanevello RM, Mazzanti CM, Bochi GV, Antes FG, Stefanello N, Rubin MA, Dressler VL, Morsch VM, Schetinger MRC. N-acetylcysteine prevents memory deficits, the decrease in acetylcholinesterase activity and oxidative stress in rats exposed to cadmium. Chem Biol Interact 2010; 186:53-60. [PMID: 20399762 DOI: 10.1016/j.cbi.2010.04.011] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 04/08/2010] [Accepted: 04/09/2010] [Indexed: 01/09/2023]
Abstract
The present study investigated the effect of the administration of N-acetylcysteine (NAC), on memory, on acetylcholinesterase (AChE) activity and on lipid peroxidation in different brain structures in cadmium (Cd)-exposed rats. The rats received Cd (2 mg/kg) and NAC (150 mg/kg) by gavage every other day for 30 days. The animals were divided into four groups (n=12-13): control/saline, NAC, Cd, and Cd/NAC. The results showed a decrease in step-down latency in the Cd-group, but NAC reversed the impairment of memory induced by Cd intoxication. Rats exposed to Cd and/or treated with NAC did not demonstrate altered shock sensitivity. Decreased AChE activity was found in hippocampus, cerebellum and hypothalamus in the Cd-group but NAC reversed this effect totally or partially while in cortex synaptosomes and striatum there was no alteration in AChE activity. An increase in TBARS levels was found in hippocampus, cerebellum and hypothalamus in the Cd-group and NAC abolished this effect while in striatum there was no alteration in TBARS levels. Urea and creatinine levels were increased in serum of Cd-intoxicated rats, but NAC was able to abolish these undesirable effects. The present findings show that treatment with NAC prevented the Cd-mediated decrease in AChE activity, as well as oxidative stress and consequent memory impairment in Cd-exposed rats, demonstrating that this compound may modulate cholinergic neurotransmission and consequently improve cognition. However, it is necessary to note that the mild renal failure may be a contributor to the behavioral impairment found in this investigation.
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Affiliation(s)
- Jamile F Gonçalves
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo, Porto Alegre, RS, Brazil
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Spanevello RM, Mazzanti CM, Schmatz R, Thomé G, Bagatini M, Correa M, Rosa C, Stefanello N, Bellé LP, Moretto MB, Oliveira L, Morsch VM, Schetinger MRC. The activity and expression of NTPDase is altered in lymphocytes of multiple sclerosis patients. Clin Chim Acta 2009; 411:210-4. [PMID: 19914228 DOI: 10.1016/j.cca.2009.11.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 10/06/2009] [Accepted: 11/05/2009] [Indexed: 12/20/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) is a demyelinating neurological disease, which is presumed to be a consequence of infiltrating lymphocytes that are autoreactive to myelin proteins. ATP and adenosine contribute to fine-tuning immune responses and NTPDase (CD39) and adenosine deaminase (ADA) are important enzymes in the control of the extracellular levels of these molecules at the site of inflammation. We evaluated the activity and expression of NTPDase and adenosine deaminase (ADA) activity in lymphocytes from patients with the relapsing-remitting form of MS (RRMS). METHODS This study involved 22 patients with RRMS and 22 healthy subjects as a control group. The lymphocytes were isolated from blood and separated on Ficoll density gradients and after isolation the NTPDase and ADA activities were determined. RESULTS The NTPDase activity and expression were increased in lymphocytes from RRMS patients when compared with the control group (p<0.05). In addition, a decrease in ADA activity was observed in lymphocytes from these patients when compared to the control group (p<0.05). CONCLUSIONS The regulation of ATP and adenosine levels by NTPDase and ADA activities may be important to preserve cellular integrity and to modulate the immune response in MS.
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Affiliation(s)
- Roselia M Spanevello
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo, 90035-003 Porto Alegre, RS, Brazil
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Thomé GR, Mazzanti CM, Ahmed M, Corrêa M, Spanevello RM, Maldonado PA, Luchese C, Cargnelutti D, Morsch VM, Duarte MMMF, Fiorenza AM, Nogueira CW, De Bona KS, Moretto MB, Da Luz SCA, Mazzanti A, Schetinger MRC. Activity of ectonucleotidases and adenosine deaminase in rats exposed to cigarette smoke. Inhal Toxicol 2009; 21:906-12. [PMID: 19459774 DOI: 10.1080/08958370802632267] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Cigarette smoke is a complex mixture of various toxic substances that are capable of initiating oxidative damage and promoting blood platelet alterations. In this study, we investigated the activities of the ectoenzymes NTPDase (ectonucleoside triphosphate diphosphohydrolase, CD39) and 5'-nucleotidase (CD73) in platelets as well as adenosine deaminase (ADA) in the plasma of rats exposed to aged and diluted sidestream smoke during 4 weeks. The rats were divided into two groups: I (control) and II (exposed to smoke). After the exposure period, blood was collected and the platelets and plasma were separated for enzymatic assay. The results demonstrated that NTPDase (with ATP as substrate) and 5'-nucleotidase (AMP as substrate) activities were significantly higher in group II (p < 0.05) as compared to group I, while no significant difference was observed for NTPDase with ADP as substrate. The ADA activity was significantly reduced in group II (p < 0.05) as compared with group I. Platelet aggregation was significantly increased in group II (p < 0.05) as compared with group I. We suggest that these alterations in the activity of enzymes from the purinergic system are associated with an increase in platelet aggregation. However, our study has demonstrated that the organism tries to compensate for this enhanced aggregation by increasing hydrolysis of AMP and reducing hydrolysis of adenosine, a potent inhibitor of aggregation and an important modulator of vascular tone.
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Affiliation(s)
- G R Thomé
- Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, RS, Brazil
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Spanevello R, Mazzanti CM, Schmatz R, Bagatini M, Stefanello N, Correa M, Kaizer R, Maldonado P, Mazzanti A, Graça DL, Martins TB, Danesi C, Morsch VM, Schetinger MRC. Effect of vitamin E on ectonucleotidase activities in synaptosomes and platelets and parameters of oxidative stress in rats experimentally demyelinated. Brain Res Bull 2009; 80:45-51. [DOI: 10.1016/j.brainresbull.2009.05.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 04/24/2009] [Accepted: 05/13/2009] [Indexed: 02/05/2023]
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Ahmed M, Batista J, Rocha T, Mazzanti CM, Hassan W, Morsch VM, Loro VL, Thomé G, Schetinger MRC. Comparative study of the inhibitory effect of antidepressants on cholinesterase activity in Bungarus sindanus (krait) venom, human serum and rat striatum. J Enzyme Inhib Med Chem 2009; 23:912-7. [PMID: 18608756 DOI: 10.1080/14756360701809977] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Cholinesterases are divided into two classes based on differences in their substrate specificity and tissue distribution: acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). These enzymes may be inhibited by several compounds, such as antidepressants. The antidepressants paroxetine, imipramine, clomipramine and sertraline inhibited both venom AChE as well as human serum BChE in a concentration-dependent manner but had no effect on AChE in the rat brain striatum. The IC(50) of venom calculated for imipramine was 0.3 mM, paroxetine 0.38 mM, clomipramine 0.34 mM and sertraline 0.35 mM. Analysis of kinetic data indicated that the inhibition caused by sertraline and paroxetine was mixed, i.e. K(m) values increased and V(max) decreased in a concentration dependent manner. Imipramine and clomipramine exhibited competitive inhibition, i.e. K(m) values increased and V(max) remained constant. The present results suggest that these therapeutic agents used for depression can also be considered as inhibitors of snake venom and human serum cholinesterase.
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Affiliation(s)
- Mushtaq Ahmed
- Departamento de Quimica, Centro de Ciencias Naturais e Exatas, Universidade Federal de Santa Maria, Brazil
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Mazzanti CM, Spanevello RM, Morsch A, Zanin R, Battisti V, Ahmed M, Gonçalves JF, Mazzanti A, Graça DL, Morsch VM, Schetinger MRC. Previous treatment with ebselen and vitamin E alters adenine nucleotide hydrolysis in platelets from adult rats experimentally demyelinated with ethidium bromide. Life Sci 2007; 81:241-8. [PMID: 17574629 DOI: 10.1016/j.lfs.2007.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Revised: 05/09/2007] [Accepted: 05/10/2007] [Indexed: 02/07/2023]
Abstract
Many aspects of the relationship between the demyelinating pathology and platelet function need to be elucidated. Thus, the activity of NTPDase and 5'-nucleotidase enzymes was analyzed in platelets from rats demyelinated with ethidium bromide (EB) and previously treated with ebselen (Ebs) and vitamin E (Vit. E). The animals were divided into four groups: for ebselen, the groups were: I-control (saline), II-(saline and Ebs), III-(EB) and IV-(EB and Ebs); and for vitamin E, the groups were: I - control (saline), II-(saline and Vit. E), III-(EB) and IV-(EB and Vit. E). After 3 and 21 days, the blood was collected and the platelets were separated for enzymatic assays. For the treatment with Ebs, the NTPDase activity for ATP substrate was significantly lower in groups II, III and IV (p < 0.05) after 3 days, while after 21 days, a reduction was observed in group III (p < 0.05). ADP hydrolysis was reduced in group II (p < 0.05) and increased in group IV (p < 0.05) after 3 days, while after 21 days there was an increase in group IV (p < 0.05). In the treatment with Vit. E, ATP hydrolysis was lower in groups II, III and IV (p < 0.05) after 3 and 21 days. ADP hydrolysis was increased in group II (p < 0.05) after 3 days, and in group IV (p < 0.05) after 21 days. However, 5'-nucleotidase activity was not altered by the treatments. These findings demonstrate that NTPDase activity in platelets is diminished in demyelinating events and the treatments with Ebs and Vit. E modulated adenine nucleotide hydrolysis.
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Affiliation(s)
- Cinthia M Mazzanti
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil
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Ahmed M, Rocha JBT, Mazzanti CM, Morsch ALB, Cargnelutti D, Corrêa M, Loro V, Morsch VM, Schetinger MRC. Malathion, carbofuran and paraquat inhibit Bungarus sindanus (krait) venom acetylcholinesterase and human serum butyrylcholinesterase in vitro. Ecotoxicology 2007; 16:363-9. [PMID: 17364237 DOI: 10.1007/s10646-007-0137-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2006] [Accepted: 02/13/2007] [Indexed: 05/14/2023]
Abstract
Carbofuran and malathion, well known pesticides, and paraquat, a world widely used herbicide, were tested on acetylcholinesterase (AChE) from Bungarus sindanus venom and butyrylcholinesterase (BChE) from human serum. The calculated IC(50 )values for inhibition of venom enzyme by malathion, carbofuran and paraquat were 2.5, 0.14, and 0.16 microM, respectively. The values for inhibition of serum butyrylcholinesterase (BChE) were 3.5, 0.09 and 0.18 microM, respectively. Analysis of kinetic data indicated that the inhibition caused by malathion, carbofuran and paraquat was mixed for venom AChE. For BChE from human serum, the inhibition caused by malathion and paraquat was mixed and for carbofuran it was uncompetitive. The present results suggest a commercial paraquat preparation (a popular herbicide) inhibits cholinesterases with similar or higher potency than classical pesticide inhibitors. Furthermore, this inhibition was observed both in human serum and snake venom, a newly studied source of AChE.
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Affiliation(s)
- Mushtaq Ahmed
- Departmento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
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Mazzanti CM, Spanevello R, Ahmed M, Schmatz R, Mazzanti A, Salbego FZ, Graça DL, Sallis ESV, Morsch VM, Schetinger MRC. Cyclosporine A inhibits acetylcholinesterase activity in rats experimentally demyelinated with ethidium bromide. Int J Dev Neurosci 2007; 25:259-64. [PMID: 17467222 DOI: 10.1016/j.ijdevneu.2007.02.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2007] [Accepted: 02/27/2007] [Indexed: 10/23/2022] Open
Abstract
Cyclosporine A is the major immunosuppressive agent used for organ transplantation and for the treatment of a variety of autoimmune disorders such as multiple sclerosis. In this work, we investigated the effect of the cyclosporine A on the acetylcholinesterase activity in the cerebral cortex, striatum, hippocampus, hypothalamus, cerebellum and pons of the rats experimentally demyelinated by ethidium bromide. Rats were divided into four groups: I control (injected with saline), II (treated with cyclosporine A), III (injected with 0.1% ethidium bromide) and IV (injected with 0.1% the ethidium bromide and treated with cyclosporine A). The results showed a significant inhibition (p<0.05) of acetylcholinesterase activity in the groups II, III and IV in all brain structures analyzed. In the striatum, hippocampus, hypothalamus and pons the inhibition was greater (p<0.005) when ethidium bromide was associated with cyclosporine A. In conclusion, the present investigation demonstrated that cyclosporine A is an inhibitor of acetylcholinesterase activity and this effect is increased after an event of toxic demyelination of the central nervous system.
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Affiliation(s)
- Cinthia M Mazzanti
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo, 90035-003 Porto Alegre, RS, Brazil
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Spanevello RM, Mazzanti CM, Maldonado PA, Zanin R, Morsch A, Hannel L, Mazzanti A, Festugatto R, Graça D, Schmatz R, Loro VL, Schetinger MRC, Morsch VM. Activities of enzymes that hydrolyze adenine nucleotides in platelets from rats experimentally demyelinated with ethidium bromide and treated with interferon-beta. Life Sci 2006; 80:1109-14. [PMID: 17239402 DOI: 10.1016/j.lfs.2006.11.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2006] [Revised: 11/09/2006] [Accepted: 11/27/2006] [Indexed: 10/23/2022]
Abstract
The activities of the enzymes NTPDase (EC 3.6.1.5, apyrase, CD39) and 5'-nucleotidase (EC 3.1.3.5, CD73) were analyzed in platelets from rats submitted to demyelination by ethidium bromide (EB) and treated with interferon beta (IFN-beta). The following groups were studied: I - control (saline), II - (saline and IFN-beta), III - (EB) and IV - (EB and IFN-beta). After 7, 15 and 30 days, the animals (n=7) were sacrificed and the platelets were separated by the method of Lunkes et al. [Lunkes, G., Lunkes D., Morsch, V., Mazzanti, C., Morsch, A., Miron, V., Schetinger, M.R.C., 2004. NTPDase and 5'-nucleotidase in rats alloxan- induced diabetes. Diabetes Research and Clinical Practice 65, 1-6]. NTPDase activity for ATP and ADP substrates was significantly lower in groups II and III after seven days, when compared to control (p<0.001). At fifteen days, ATP hydrolysis was significantly lower in group III and IV and higher in group II (p<0.001), while there was an activation of ADP hydrolysis in group II (p<0.001), when compared with the control. 5'-nucleotidase activity was significantly higher in group IV (p<0.001) after seven days, and lower in the groups III and IV (p<0.001) after fifteen days in relation to the control. No significant differences were observed in NTPDase and 5'-nucleotidase activities after thirty days. In conclusion, our study demonstrated that the hydrolysis of adenine nucleotides is modified in platelets of rats demyelinated and treated with IFN-beta.
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Affiliation(s)
- Roselia M Spanevello
- Pós Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Campus Universitário, Camobi, 97105-900 Santa Maria, RS, Brazil
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Ahmed M, Rocha JBT, Corrêa M, Mazzanti CM, Zanin RF, Morsch ALB, Morsch VM, Schetinger MRC. Inhibition of two different cholinesterases by tacrine. Chem Biol Interact 2006; 162:165-71. [PMID: 16860785 DOI: 10.1016/j.cbi.2006.06.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2006] [Revised: 06/10/2006] [Accepted: 06/12/2006] [Indexed: 10/24/2022]
Abstract
Kinetic parameters of the effect of tacrine as a cholinesterase inhibitor have been studied in two different sources: snake venom (Bungarus sindanus) acetylcholinesterase (AChE) and human serum butyrylcholinesterase (BChE). Tacrine inhibited both venom acetylcholinesterase (AChE) as well as human serum butyrylcholinesterase (BChE) in a concentration-dependent manner. Kinetic studies indicated that the nature of inhibition was mixed for both enzymes, i.e. Km values increase and Vmax decrease with the increase of the tacrine concentration. The calculated IC50 for snake venom and for human serum were 31 and 25.6 nM, respectively. Ki was observed to be 13 nM for venom acetylcholinesterase (AChE) and 12 nM for serum butyrylcholinesterase (BChE). KI (constant of AChE-ASCh-tacrine complex into AChE-ASCh complex and tacrine) was estimated to be 20 nM for venom and 10 nM for serum butyrylcholinesterase (BChE), while the gammaKm (dissociation constant of AChE-ASCh-tacrine complex into AChE-tacrine complex and ASCh) were 0.086 and 0.147 mM for snake venom AChE and serum BChE, respectively. The present results suggest that this therapeutic agent used for the treatment of Alzheimer's disease can also be considered an inhibitor of snake venom and human serum butyrylcholinesterase. Values of Ki and KI show that tacrine had more affinity with these enzymes as compared with other cholinesterases from the literature.
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Affiliation(s)
- Mushtaq Ahmed
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
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Mazzanti CM, Spanevello RM, Obregon A, Pereira LB, Streher CA, Ahmed M, Mazzanti A, Graça DL, Morsch VM, Schetinger MRC. Ethidium bromide inhibits rat brain acetylcholinesterase activity in vitro. Chem Biol Interact 2006; 162:121-7. [PMID: 16839531 DOI: 10.1016/j.cbi.2006.05.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Revised: 05/19/2006] [Accepted: 05/22/2006] [Indexed: 11/21/2022]
Abstract
Ethidium bromide (EtBr), a fluorescent dark red compound and stain for double-stranded DNA and RNA was used to study acetylcholinesterase (AChE) activity in vitro together with kinetic parameters of this enzyme in the striatum (ST), hippocampus (HP), cerebral cortex (CC) and cerebellum (CB) of adult rats. AChE activity in vitro in the ST, HP, CC and CB was significantly reduced (p<0.05) in the presence of EtBr at concentrations of 0.00625, 0.0125, 0.025, 0.05 and 0.1 mM. For the analysis of the kinetic three concentrations of EtBr were tested (0.00625, 0.025 and 0.1 mM). An uncompetitive inhibition type was observed in the ST, HP and CC, whereas in the CB the inhibition type was mixed. These data indicate that EtBr should be considered a strong inhibitor of AChE activity demonstrating that there is an interaction between this compound and the cholinergic system.
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Affiliation(s)
- Cinthia M Mazzanti
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo 90035-003, Porto Alegre, RS, Brazil
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Mazzanti CM, Spanevello RM, Pereira LB, Gonçalves JF, Kaizer R, Corrêa M, Ahmed M, Mazzanti A, Festugatto R, Graça DL, Morsch VM, Schetinger MRC. Acetylcholinesterase Activity in Rats Experimentally Demyelinated with Ethidium Bromide and Treated with Interferon Beta. Neurochem Res 2006; 31:1027-34. [PMID: 16871442 DOI: 10.1007/s11064-006-9112-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2006] [Indexed: 10/24/2022]
Abstract
The ethidium bromide (EB) demyelinating model was associated with interferon beta (IFN-beta) to evaluate acetylcholinesterase (AChE) activity in the striatum (ST), hippocampus (HP), cerebral cortex (CC), cerebellum (CB), hypothalamus (HY), pons (PN) and synaptosomes from the CC. Rats were divided into four groups: I control (saline), II (IFN-beta), III (EB) and IV (EB and IFN-beta). After 7, 15 and 30 days rats (n = 6) were sacrificed, and the brain structures were removed for enzymatic assay. AChE activity was found to vary in all the brain structures in accordance with the day studied (7-15-30 days) (P < 0.05). In the group III, there was an inhibition of the AChE activity in the ST, CB, HY, HP and also in synaptosomes of the CC (P < 0.05). It was observed that IFN-beta per se was capable to significantly inhibit (P < 0.05) AChE activity in the ST, HP, HY and synaptosomes of the CC. Our results suggest that one of the mechanisms of action of IFN-beta is through the inhibition of AChE activity, and EB could be considered an inhibitor of AChE activity by interfering with cholinergic neurotransmission in the different brain regions.
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Affiliation(s)
- C M Mazzanti
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil
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Spanevello RMM, Mazzanti CM, Kaizer R, Zanin R, Cargnelutti D, Hannel L, Côrrea M, Mazzanti A, Festugatto R, Graça D, Schetinger MRC, Morsch VM. Apyrase and 5'-nucleotidase activities in synaptosomes from the cerebral cortex of rats experimentally demyelinated with ethidium bromide and treated with interferon-beta. Neurochem Res 2006; 31:455-62. [PMID: 16758353 DOI: 10.1007/s11064-006-9039-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2005] [Indexed: 10/24/2022]
Abstract
Apyrase and 5'-nucleotidase activities were analyzed in an ethidium bromide (EB) demyelinating model associated with interferon-beta (IFN-beta). The animals were divided in groups: I, control (saline); II, saline and IFN-beta; III, EB and IV, EB and IFN-beta. After 7, 15 and 30 days the animals (n = 5) were sacrificed and the cerebral cortex was removed for synaptosome preparation and enzymatic assays. Apyrase activity using ATP as substrate increased in groups II, III and IV (P < 0.001) after 7 days and in groups III and IV (P < 0.001) after 15 days. Using ADP as substrate, an activation of this enzyme was observed in group III (P < 0.05) after seven and 15 days. The 5'-nucleotidase activity increased in group III (P < 0.05) after 7 days and in groups II, III and IV (P < 0.001) after 15 days. After 30 days treatment, no significant alteration was observed in enzyme activities. Results showed that apyrase and 5'-nucleotidase activities are altered in demyelination events and that IFN-beta was able to regulate the adenine nucleotide hydrolysis.
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Affiliation(s)
- R M M Spanevello
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Campus Universitário, Camobi, RS, Brasil
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Roy A, Rylander G, Forslund K, Asberg M, Mazzanti CM, Goldman D, Nielsen DA. Excess tryptophan hydroxylase 17 779C allele in surviving cotwins of monozygotic twin suicide victims. Neuropsychobiology 2001; 43:233-6. [PMID: 11340361 DOI: 10.1159/000054895] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To evaluate the relationship of the tryptophan hydroxylase (TPH) genotype to suicidality by the study of surviving monozygotic (MZ) cotwins of twins who committed suicide. METHOD Twenty-four surviving Swedish MZ twins whose MZ cotwins had committed suicide were compared to 158 demographically sampled Swedish general population controls for TPH alleles. We also examined serotonin transporter alleles. RESULTS The living MZ cotwins of suicide victims had a significantly higher TPH 17 779C allele frequency than controls. No significant difference was observed for serotonin transporter alleles. CONCLUSION These results, in a small sample, suggest the possibility that the 17 779C allele of the TPH gene may be associated with an increased risk of suicide. Further studies in larger samples are needed.
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Affiliation(s)
- A Roy
- Mental Health and Behavioral Science (116A), DVA New Jersey Health Care System, East Orange, NJ 07019, USA
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Egan MF, Goldberg TE, Kolachana BS, Callicott JH, Mazzanti CM, Straub RE, Goldman D, Weinberger DR. Effect of COMT Val108/158 Met genotype on frontal lobe function and risk for schizophrenia. Proc Natl Acad Sci U S A 2001; 98:6917-22. [PMID: 11381111 PMCID: PMC34453 DOI: 10.1073/pnas.111134598] [Citation(s) in RCA: 1708] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Abnormalities of prefrontal cortical function are prominent features of schizophrenia and have been associated with genetic risk, suggesting that susceptibility genes for schizophrenia may impact on the molecular mechanisms of prefrontal function. A potential susceptibility mechanism involves regulation of prefrontal dopamine, which modulates the response of prefrontal neurons during working memory. We examined the relationship of a common functional polymorphism (Val(108/158) Met) in the catechol-O-methyltransferase (COMT) gene, which accounts for a 4-fold variation in enzyme activity and dopamine catabolism, with both prefrontally mediated cognition and prefrontal cortical physiology. In 175 patients with schizophrenia, 219 unaffected siblings, and 55 controls, COMT genotype was related in allele dosage fashion to performance on the Wisconsin Card Sorting Test of executive cognition and explained 4% of variance (P = 0.001) in frequency of perseverative errors. Consistent with other evidence that dopamine enhances prefrontal neuronal function, the load of the low-activity Met allele predicted enhanced cognitive performance. We then examined the effect of COMT genotype on prefrontal physiology during a working memory task in three separate subgroups (n = 11-16) assayed with functional MRI. Met allele load consistently predicted a more efficient physiological response in prefrontal cortex. Finally, in a family-based association analysis of 104 trios, we found a significant increase in transmission of the Val allele to the schizophrenic offspring. These data suggest that the COMT Val allele, because it increases prefrontal dopamine catabolism, impairs prefrontal cognition and physiology, and by this mechanism slightly increases risk for schizophrenia.
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Affiliation(s)
- M F Egan
- Clinical Brain Disorders Branch, Building 10, Center Drive, National Institute of Mental Health, Bethesda, MD 20892, USA.
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Lipsky RH, Mazzanti CM, Rudolph JG, Xu K, Vyas G, Bozak D, Radel MQ, Goldman D. DNA melting analysis for detection of single nucleotide polymorphisms. Clin Chem 2001; 47:635-44. [PMID: 11274012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND Several methods for detection of single nucleotide polymorphisms (SNPs; e.g., denaturing gradient gel electrophoresis and denaturing HPLC) are indirectly based on the principle of differential melting of heteroduplex DNA. We present a method for detecting SNPs that is directly based on this principle. METHODS We used a double-stranded DNA-specific fluorescent dye, SYBR Green I (SYBR) in an efficient system (PE 7700 Sequence Detector) in which DNA melting was controlled and monitored in a 96-well plate format. We measured the decrease in fluorescence intensity that accompanied DNA duplex denaturation, evaluating the effects of fragment length, dye concentration, DNA concentration, and sequence context using four naturally occurring polymorphisms (three SNPs and a single-base deletion/insertion). RESULTS DNA melting analysis (DM) was used successfully for variant detection, and we also discovered two previously unknown SNPs by this approach. Concentrations of DNA amplicons were readily monitored by SYBR fluorescence, and DNA amplicon concentrations were highly reproducible, with a CV of 2.6%. We readily detected differences in the melting temperature between homoduplex and heteroduplex fragments 15-167 bp in length and differing by only a single nucleotide substitution. CONCLUSIONS The efficiency and sensitivity of DMA make it highly suitable for the large-scale detection of sequence variants.
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Affiliation(s)
- R H Lipsky
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852, USA.
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Enoch MA, Goldman D, Barnett R, Sher L, Mazzanti CM, Rosenthal NE. Association between seasonal affective disorder and the 5-HT2A promoter polymorphism, -1438G/A. Mol Psychiatry 1999; 4:89-92. [PMID: 10089016 DOI: 10.1038/sj.mp.4000439] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Genes involved in serotonin metabolism are good candidates for the pathogenesis of seasonal affective disorder (SAD). A functional variant in the serotonin transporter promoter, 5-HTTLPR, has recently been shown to be associated with SAD and seasonality. The purpose of this study was to determine whether -1438G/A, a polymorphism in the 5-HT2A promoter, is associated with SAD and seasonality, and whether it has additive effects with 5-HTTLPR on seasonality. Sixty-seven individuals with SAD and 69 normal volunteers, all screened with the SCID and diagnosed according to DSM-III-R criteria, were genotyped for the -1 438G/A 5-HT2A promoter polymorphism. All had been previously genotyped for 5-HTTLPR and had been assessed for seasonality by the Global Seasonality Scale. There was a significant increase in the frequency of the -1438A variant allele of the 5-HT2A promoter polymorphism in SAD patients (0.47) compared to matched controls (0.36) (P < 0.01). The difference in genotype distribution was also significant (P < 0.05). We found no association between the -1438G/A polymorphism and seasonality scores, and there was no additive effect with 5-HTTLPR on seasonality. In conclusion, we have shown that the -1438G/A 5-HT2A promoter variant is associated with SAD but not with seasonality. We suggest that the association may instead be with the depressive symptoms of SAD. However, these results should be treated with caution until replicated because of the possibility of false-positive findings in case-control association studies.
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Affiliation(s)
- M A Enoch
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA.
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Mazzanti CM, Lappalainen J, Long JC, Bengel D, Naukkarinen H, Eggert M, Virkkunen M, Linnoila M, Goldman D. Role of the serotonin transporter promoter polymorphism in anxiety-related traits. Arch Gen Psychiatry 1998; 55:936-40. [PMID: 9783565 DOI: 10.1001/archpsyc.55.10.936] [Citation(s) in RCA: 159] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND The heritability of interindividual variation in anxiety and other aspects of personality establishes that variants of genes influence these traits. A functional polymorphism in the promoter of the human serotonin transporter gene (SLC6A4*C) was identified and found to be linked to an anxiety-related personality trait, Neuroticism. The polymorphism affects gene transcription and, ultimately, gene function. We have attempted to confirm the role of SLC6A4*C in anxiety-related personality traits by sibpair analysis and association studies. METHODS Sibpair linkage analysis and association study were performed in 655 Finns. The index cases were 182 alcoholic criminal offenders, through which 258 relatives were ascertained to obtain 366 sibpairs. In addition, 215 unrelated population controls were collected. Each individual was psychiatrically interviewed, blind-rated for DSM-III-R diagnoses, and assessed with the Tridimensional Personality Questionnaire. RESULTS The sibpair analysis revealed a positive linkage between SLC6A4*C and the 2 anxiety-related subdimensions of Harm Avoidance: HA1 (Anticipatory Worry) and HA2 (Fear of Uncertainty) (P = .003). However, there was no consistent association between SLC6A4*C and any Tridimensional Personality Questionnaire trait. CONCLUSIONS In the present study we replicated the relationship of SLC6A4*C to anxiety by sibpair linkage analysis but found no evidence of association, raising the question of whether SLC6A4*C locus is itself affecting anxiety or is linked to another still unknown functional variant.
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Affiliation(s)
- C M Mazzanti
- Laboratory of Neurogenetics, National Institute of Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852, USA
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Rosenthal NE, Mazzanti CM, Barnett RL, Hardin TA, Turner EH, Lam GK, Ozaki N, Goldman D. Role of serotonin transporter promoter repeat length polymorphism (5-HTTLPR) in seasonality and seasonal affective disorder. Mol Psychiatry 1998; 3:175-7. [PMID: 9577843 DOI: 10.1038/sj.mp.4000360] [Citation(s) in RCA: 189] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Seasonal variations in mood and behavior (seasonality) and seasonal affective disorder (SAD) have been attributed to seasonal fluctuations in brain serotonin (5-HT). the short (s), as opposed to the long (l), allele of the 5-HT transporter linked polymorphism (5-HTTLPR) has been associated with neuroticism and depression. We hypothesized that this short allele would also be associated with SAD and with higher levels of seasonality. Ninety-seven SAD patients and 71 non-seasonal healthy controls with low seasonality levels were genotyped for 5-HTTLPR and compared statistically. Patients with SAD were less likely to have the l/l genotype (27.8% vs 47.9%; P < 0.01) and more likely to have the s allele (44.8% vs 32.4%; P < 0.02) as compared to controls. The three 5-HTTLPR genotypes were also differentially distributed in patients and controls (P < 0.03). The SAD patients with the l/l genotype had a lower mean seasonality score than did patients with the other two genotypes (mean +/- s.d. = 15.3 +/- 2.8 vs 17.1 +/- 3.4 respectively; P < 0.02). The 5-HTTLPR short allele contributes to the trait of seasonality and is a risk factor for SAD, providing further evidence for a relationship between genetic variation in the 5-HT transporter (5-HTT) and behavior.
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Affiliation(s)
- N E Rosenthal
- National Institute of Mental Health, Clinical Psychobiology Branch, Bethesda, MD 20892-1390, USA.
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