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Ongaratti BR, Haag T, D'Ávila MF, Trott G, Ferreira NP, Rech CGSL, Pereira-Lima JFS, da Costa Oliveira M. Gene and protein expression of E-cadherin and NCAM markers in non-functioning pituitary adenomas. Ann Diagn Pathol 2018; 38:59-61. [PMID: 30419428 DOI: 10.1016/j.anndiagpath.2018.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/11/2018] [Accepted: 10/07/2018] [Indexed: 10/28/2022]
Abstract
Non-functioning pituitary adenomas (NFPA) are classified as benign tumors of slow growth, but 40% of them present local invasion, a characteristic of behavior still unpredictable with the use of current tumor markers. This work aims to evaluate the tissue markers E-cadherin and NCAM, which act on cell adhesion, in tumor tissue samples of NFPA and its relationship with the degree of local invasiveness. Gene expression of E-cadherin (CDH1) and NCAM (NCAM1) was assessed by real-time PCR and tissue expression by immunohistochemistry. Fifty-three patients with macroadenomas were submitted to transsphenoidal surgery, presented grade II invasive adenomas in 16 cases (30.2%), grade III in 7 (13.2%) and grade IV in 30 (56.6%). In the immunohistochemistry, one case was negative for E-cadherin, 7 showed weak immunostaining, 17 moderate and 28 strong, whereas for NCAM, 5 showed negative, 28 weakly, 14 moderate and 6 strong. Regarding gene expression, 43.3% showed expression for CDH1 (mean of 2.12) and 50% for NCAM1 (mean of 1.86). There was no significant correlation between the immunohistochemical expression of the markers, as well as the gene expression, the degree of invasiveness and clinical data. The results suggest that E-cadherin and NCAM markers are not directly related to the invasiveness in NFPA.
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Affiliation(s)
- Bárbara Roberta Ongaratti
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite, 245 - Centro Histórico, 90050-170 Porto Alegre, RS, Brazil.
| | - Taiana Haag
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite, 245 - Centro Histórico, 90050-170 Porto Alegre, RS, Brazil
| | - Marícia Fantinel D'Ávila
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite, 245 - Centro Histórico, 90050-170 Porto Alegre, RS, Brazil
| | - Geraldine Trott
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite, 245 - Centro Histórico, 90050-170 Porto Alegre, RS, Brazil
| | - Nelson Pires Ferreira
- Neuroendocrinology Center, Complexo Hospitalar Santa Casa, Av. Independência, 75 - Independência, Porto Alegre - RS, 90035-072 Porto Alegre, RS, Brazil
| | - Carolina Garcia Soares Leães Rech
- Neuroendocrinology Center, Complexo Hospitalar Santa Casa, Av. Independência, 75 - Independência, Porto Alegre - RS, 90035-072 Porto Alegre, RS, Brazil
| | - Júlia Fernanda Semmelmman Pereira-Lima
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite, 245 - Centro Histórico, 90050-170 Porto Alegre, RS, Brazil; Neuroendocrinology Center, Complexo Hospitalar Santa Casa, Av. Independência, 75 - Independência, Porto Alegre - RS, 90035-072 Porto Alegre, RS, Brazil
| | - Miriam da Costa Oliveira
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), R. Sarmento Leite, 245 - Centro Histórico, 90050-170 Porto Alegre, RS, Brazil; Neuroendocrinology Center, Complexo Hospitalar Santa Casa, Av. Independência, 75 - Independência, Porto Alegre - RS, 90035-072 Porto Alegre, RS, Brazil
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Mendes GA, Haag T, Trott G, Rech CGSL, Ferreira NP, Oliveira MC, Kohek MB, Pereira-Lima JFS. Expression of E-cadherin, Slug and NCAM and its relationship to tumor invasiveness in patients with acromegaly. ACTA ACUST UNITED AC 2017; 51:e6808. [PMID: 29267504 PMCID: PMC5731331 DOI: 10.1590/1414-431x20176808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/19/2017] [Indexed: 01/08/2023]
Abstract
Pituitary adenomas account for 10–15% of primary intracranial tumors. Growth hormone (GH)-secreting adenomas account for 13% of all pituitary adenomas and cause acromegaly. These tumors can be aggressive, invade surrounding structures and are highly recurrent. The objective of this study was to evaluate E-cadherin, Slug and neural cell adhesion molecule (NCAM) expression in GH-secreting pituitary adenomas and its relationship to tumor invasiveness. A cross–sectional study of patients who underwent hypophysectomy due to GH-secreting pituitary adenoma from April 2007 to December 2014 was carried out. The medical records were reviewed to collect clinical data. Immediately after surgery, tumor samples were frozen in liquid nitrogen and stored in a biofreezer at –80°C for assessment of E-cadherin 1 (CDH1), SLUG (SNAI2), and NCAM (NCAM1) by real-time PCR. The samples were fixed in formalin and embedded in paraffin for immunohistochemical analysis of E-cadherin and NCAM. Thirty-five patients with acromegaly were included in the study. Of these, 65.7% had invasive tumors. Immunohistochemically, E-cadherin was expressed in 96.7% of patients, and NCAM in 80% of patients. There was no statistically significant relationship between tumor grade or invasiveness and immunohistochemical expression of these markers. Regarding gene expression, 50% of cases expressed CDH1, none expressed SNAI2, and 53.3% expressed NCAM1. There was no statistically significant relationship between tumor grade or invasiveness and gene expression of CDH1, SNAI2, and NCAM1. The absence of Slug overexpression and of E-cadherin and NCAM suppression suggests that expression of these markers is not associated with tumor invasiveness in GH-secreting pituitary adenomas.
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Affiliation(s)
- G A Mendes
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - T Haag
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - G Trott
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C G S L Rech
- Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - N P Ferreira
- Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - M C Oliveira
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil.,Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - M B Kohek
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - J F S Pereira-Lima
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil.,Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
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Valdez SR, Penissi AB, Deis RP, Jahn GA. Hormonal profile and reproductive performance in lactation deficient (OFA hr/hr) and normal (Sprague–Dawley) female rats. Reproduction 2007; 133:827-40. [PMID: 17504926 DOI: 10.1530/rep-06-0032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Lactation deficiency may have important consequences on infant health, particularly in populations of low socioeconomic status. The OFAhr/hr(OFA) strain of rats, derived from Sprague–Dawley (SD) rats, has deficient lactation and is a good model of lactation failure. We examined the reproductive performance and hormonal profiles in OFA and SD strains to determine the cause(s) of the lactation failure of the OFA strain. We measured hormonal (PRL, GH, gonadotropins, oxytocin, and progesterone) levels by RIA in cycling, pregnant, and lactating rats and in response to suckling. Dopaminergic metabolism was assessed by determination of mediobasal hypothalamic dopamine and dihydroxyphenylacetic acid (DOPAC) concentrations by HPLC and tyrosine hydroxylase expression by immunocytochemistry and western blot. OFA rats have normal fertility but 50% of the litters die of malnutrition on early lactation; only 6% of the mothers show normal lactation. The OFA rats showed lower circulating PRL during lactation, increased hypothalamic dopamine and DOPAC, and impaired milk ejection with decreased PRL and oxytocin response to suckling. Before parturition, PRL release and lactogenesis were normal, but dopaminergic metabolism was altered, suggesting activation of the dopaminergic system in OFA but not in SD rats. The number of arcuate and periventricular neurons expressing tyrosine hydroxylase was higher in SD rats, but hypothalamic expression of TH was higher in OFA rats at the end of pregnancy and early lactation. These results suggest that the OFA rats have impaired PRL release linked with an augmented dopaminergic tone which could be partially responsible for the lactational failure.
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MESH Headings
- 3,4-Dihydroxyphenylacetic Acid/analysis
- Animals
- Blotting, Western
- Caseins/analysis
- Chromatography, High Pressure Liquid
- Desmogleins/genetics
- Dopamine/analysis
- Female
- Hypothalamus, Middle/chemistry
- Lactation/physiology
- Lactose/analysis
- Mammary Glands, Animal/chemistry
- Mammary Glands, Animal/pathology
- Models, Animal
- Pregnancy
- Pregnancy, Animal/metabolism
- Proestrus/metabolism
- Prolactin/blood
- Rats
- Rats, Mutant Strains
- Rats, Sprague-Dawley
- Tyrosine 3-Monooxygenase/analysis
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Affiliation(s)
- Susana R Valdez
- Laboratorio de Reproducción y Lactancia, IMBECU, CRICYT-CONICET, Casilla de Correos 855, 5500 Mendoza, Argentina
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