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Amorim PVGH, Grande IPP, Batista RL, Silveira LFG, Freire ACTB, Bronstein MD, Jallad RS, Trarbach EB. Association between KISS1 rs5780218 promoter polymorphism and onset of growth hormone secreting pituitary adenoma. Ann Endocrinol (Paris) 2018; 80:96-100. [PMID: 30318257 DOI: 10.1016/j.ando.2018.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/06/2018] [Accepted: 09/18/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVES This study analyzed the KISS1 c.-145delA (rs5780218) promoter polymorphism in a cohort of patients with growth hormone secreting pituitary adenoma (somatotropinoma) and controls, to investigate its role in the incidence of acromegaly and to assess patient/tumor characteristics. Material and methods rs5780218 allelic and genotypic distributions were compared between 49 somatotropinoma patients and 167 healthy controls. rs5780218 was also assessed in relation to patient characteristics and tumor aggressiveness, as characterized by tumor invasion and resistance to conventional therapy. The relationship between KISS1 mRNA expression and the rs5780218 genotype was also assessed in available pituitary tumor samples. RESULTS The homozygous -/- variant genotype was associated with high rates of somatotropinoma (P<0.01), but not with tumor invasiveness, patient characteristics or hormonal remission. KISS1 mRNA expression was much lower in somatotropinomas carrying the deleted allele than in homozygous wild type AA. CONCLUSIONS In this pilot study, the rs5780218 promoter polymorphism was evaluated in pituitary adenoma, and showed a possible association with the incidence of somatotropinoma but not with tumor progression.
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Affiliation(s)
- Paulo V G H Amorim
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Isabella P P Grande
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Rafael L Batista
- Divisao de Neurocirurgia Funcional, Instituto de Psiquiatria - IPq, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Leticia F G Silveira
- Departamento de Clínica Médica, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil; Laboratório de Hormônios e Genética Molecular, LIM42, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Ane Caroline T B Freire
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Marcello D Bronstein
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Raquel S Jallad
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil
| | - Ericka B Trarbach
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil; Unidade de Neuroendocrinologia, Disciplina de Endocrinologia e Metabologia, Hospital das Clinicas, FMUSP, São Paulo, Brasil.
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Grande IPP, Amorim PVGH, Freire ACTB, Jallad RS, Musolino NR, Cescato VA, da Silva GO, Bronstein MD, Trarbach EB. Differential gene expression of sirtuins between somatotropinomas and nonfunctioning pituitary adenomas. Pituitary 2018; 21:355-361. [PMID: 29564694 DOI: 10.1007/s11102-018-0881-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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] [Indexed: 12/12/2022]
Abstract
Sirtuins 1-7 (SIRT) are a highly conserved family of histone deacetylases involved in the regulation of longevity that have a considerable impact in transcription, DNA repair regulation, telomeric stability, cell senescence and apoptosis. In the present study, SIRT1-7 mRNA levels were evaluated in 37 somatotropinomas and 31 nonfunctioning pituitary adenomas (NFPAs) using qPCR and relation to tumor size, invasiveness and Ki-67 proliferative index was made. Overexpression of SIRT1 was observed in 86.5% of somatotropinomas versus 41.9% of NFPAs (P < 0.01). SIRT3 was more underexpressed in NFPAs than somatotropinomas (77.4 and 40.5%, respectively, P < 0.01) as well as SIRT4 and SIRT7. Despite the lack of association between sirtuins and invasiveness or Ki-67 index, SIRT1 and SIRT3 expressions were related to tumor size. Mean of the largest diameter was smaller in adenomas with SIRT1 overexpression than with normal expression (P < 0.01) and SIRT3 underexpression was associated with larger tumors (P < 0.01). In conclusion, a pronounced difference in sirtuins expression was identified between pituitary adenomas, suggesting that these genes are potential markers of pituitary adenomas and could be employed in the characterization of somatotropinomas and NFPAs. The role of sirtuins in pathogenesis of pituitary tumors merits further investigation and possibly will provide new molecular insight about their progression.
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Affiliation(s)
- Isabella P P Grande
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Rua Dr Arnaldo, 455 -LIM25, 4o andar, sala 4305, Cerqueira César, Sao Paulo, SP, CEP 01246-903, Brazil
| | - Paulo V G H Amorim
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Rua Dr Arnaldo, 455 -LIM25, 4o andar, sala 4305, Cerqueira César, Sao Paulo, SP, CEP 01246-903, Brazil
| | - Ane Caroline Thé B Freire
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil
| | - Raquel S Jallad
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil
| | - Nina R Musolino
- Divisao de Neurocirurgia Funcional, Instituto de Psiquiatria - IPq, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil
| | - Valter A Cescato
- Divisao de Neurocirurgia Funcional, Instituto de Psiquiatria - IPq, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil
| | - Gilberto O da Silva
- Divisao de Neurocirurgia Funcional, Instituto de Psiquiatria - IPq, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil
| | - Marcello D Bronstein
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil
| | - Ericka B Trarbach
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Rua Dr Arnaldo, 455 -LIM25, 4o andar, sala 4305, Cerqueira César, Sao Paulo, SP, CEP 01246-903, Brazil.
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clinicas, FMUSP, Sao Paulo, Brazil.
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Foltran RK, Amorim PVGH, Duarte FH, Grande IPP, Freire ACTB, Frassetto FP, Dettoni JB, Alves VA, Castro I, Trarbach EB, Bronstein MD, Jallad RS. Study of major genetic factors involved in pituitary tumorigenesis and their impact on clinical and biological characteristics of sporadic somatotropinomas and non-functioning pituitary adenomas. ACTA ACUST UNITED AC 2018; 51:e7427. [PMID: 29947650 PMCID: PMC6040863 DOI: 10.1590/1414-431x20187427] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/02/2018] [Indexed: 11/25/2022]
Abstract
Genetic and functional aberrations of guanine nucleotide-binding protein, alpha stimulating (GNAS), aryl hydrocarbon receptor interacting protein (AIP), and pituitary tumor transforming gene (PTTG) are among the most prominent events in pituitary tumorigenesis. A cohort of Brazilian patients with somatotropinomas (n=41) and non-functioning pituitary adenomas (NFPA, n=21) from a single tertiary-referral center were evaluated for GNAS and AIP mutations and gene expression of AIP and PTTG. Results were compared to the clinical and biological (Ki67 and p53 expression) characteristics of tumors and their response to therapy, if applicable. Genetic analysis revealed that 27% of somatotropinomas and 4.8% of NFPA harbored GNAS mutations (P=0.05). However, no differences were observed in clinical characteristics, tumor extension, response to somatostatin analog therapy, hormonal/surgical remission rates, Ki67 index, and p53 expression between mutated and non-mutated somatotropinomas patients. PTTG overexpression (RQ mean=10.6, min=4.39, max=11.9) and AIP underexpression (RQ mean=0.56, min=0.46-max=0.92) were found in virtually all cases without a statistically significant relationship with clinical and biological tumor features. No patients exhibited somatic or germline pathogenic AIP mutations. In conclusion, mutations in GNAS and abnormal PTTG and AIP expression had no impact on tumor features and treatment outcomes in this cohort. Our data support some previous studies and point to the need for further investigations, probably involving epigenetic and transcriptome analysis, to improve our understanding of pituitary tumor behavior.
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Affiliation(s)
- R K Foltran
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P V G H Amorim
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F H Duarte
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.,Serviço de Endocrinologia, A.C. Camargo Center, São Paulo, SP, Brasil
| | - I P P Grande
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A C T B Freire
- Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F P Frassetto
- Divisao de Anatomia Patológica, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - J B Dettoni
- Divisao de Anatomia Patológica, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - V A Alves
- Divisao de Anatomia Patológica, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - I Castro
- Divisao de Medicina Molecular, Departamento de Medicina, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E B Trarbach
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.,Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M D Bronstein
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.,Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R S Jallad
- Laboratorio de Endocrinologia Celular e Molecular, LIM25, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.,Unidade de Neuroendocrinologia, Disciplina de Endocrinologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
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