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de Sousa GRV, Soares IC, Faria AM, Domingues VB, Wakamatsu A, Lerario AM, Alves VAF, Zerbini MCN, Mendonca BB, Fragoso MCBV, Latronico AC, Almeida MQ. DAX1 Overexpression in Pediatric Adrenocortical Tumors: A Synergic Role with SF1 in Tumorigenesis. Horm Metab Res 2015; 47:656-61. [PMID: 25985323 DOI: 10.1055/s-0034-1398560] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
DAX1 transcription factor is a key determinant of adrenogonadal development, acting as a repressor of SF1 targets in steroidogenesis. It was recently demonstrated that DAX1 regulates pluripotency and differentiation in murine embryonic stem cells. In this study, we investigated DAX1 expression in adrenocortical tumors (ACTs) and correlated it with SF1 expression and clinical parameters. DAX1 and SF1 protein expression were assessed in 104 ACTs from 34 children (25 clinically benign and 9 malignant) and 70 adults (40 adenomas and 30 carcinomas). DAX1 gene expression was studied in 49 ACTs by quantitative real-time PCR. A strong DAX1 protein expression was demonstrated in 74% (25 out of 34) and 24% (17 out of 70) of pediatric and adult ACTs, respectively (χ(2)=10.1, p=0.002). In the pediatric group, ACTs with a strong DAX1 expression were diagnosed at earlier ages than ACTs with weak expression [median 1.2 (range, 0.5-4.5) vs. 2.2 (0.9-9.4), p=0.038]. DAX1 expression was not associated with functional status in ACTs. Interestingly, a positive correlation was observed between DAX1 and SF1 protein expression in both pediatric and adult ACTs (r=0.55 for each group separately; p<0.0001). In addition, DAX1 gene expression was significantly correlated with SF1 gene expression (p<0.0001, r=0.54). In conclusion, DAX1 strong protein expression was more frequent in pediatric than in adult ACTs. Additionally, DAX1 and SF1 expression positively correlated in ACTs, suggesting that these transcription factors might cooperate in adrenocortical tumorigenesis.
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Affiliation(s)
- G R V de Sousa
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - I C Soares
- Hospital do Câncer de Barretos, RO, Brazil
| | - A M Faria
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - V B Domingues
- Divisão de Anatomia Patologia, Laboratório de Patologia Hepática/LIM14 do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, SP, Brazil
| | - A Wakamatsu
- Divisão de Anatomia Patologia, Laboratório de Patologia Hepática/LIM14 do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, SP, Brazil
| | - A M Lerario
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - V A F Alves
- Divisão de Anatomia Patologia, Laboratório de Patologia Hepática/LIM14 do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, SP, Brazil
| | - M C N Zerbini
- Divisão de Anatomia Patologia, Laboratório de Patologia Hepática/LIM14 do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, SP, Brazil
| | - B B Mendonca
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - M C B V Fragoso
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - A C Latronico
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - M Q Almeida
- Unidade de Suprarrenal & Endocrinologia do Desenvolvimento, Laboratório de Hormônios e Genética Molecular (Laboratório de Investigação Medica, LIM 42) da Disciplina de Endocrinologia do Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Macedo M, Martins JL, Meyer KF, Soares IC. Study of density of interstitial cells of cajal in the terminal intestine of rats with anorectal malformation. Eur J Pediatr Surg 2008; 18:75-9. [PMID: 18437648 DOI: 10.1055/s-2008-1038482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 10/22/2022]
Abstract
INTRODUCTION Intestinal constipation is one of the most commonly occurring complaints in the postoperative period after correction of anorectal malformation (ARM). An abnormal density of interstitial cells of Cajal (ICC) is one potential cause. The objective of this study was to analyze the density of ICC in the terminal intestine of fetuses of rats with anorectal anomaly induced by ethylenethiourea (ETU). MATERIAL AND METHODS The fetuses were distributed into three groups: Group A--normal fetuses obtained from pregnant female rats that did not receive ETU; Group B--fetuses with no ARM, obtained from pregnant rats that received ETU, and Group C--fetuses with ARM, obtained from pregnant rats that received ETU. ETU was administered on the 11th day of pregnancy at a dose of 125 mg/kg. The fetuses were extracted by means of laparotomy on the 21st day of pregnancy. The terminal intestine of the fetuses was removed and analyzed by immunohistochemistry to evaluate ICC. RESULTS Statistically significant differences were found between groups A, B and C regarding the density of ICC. Group A presented with the highest density, followed by groups B and C. CONCLUSION There is a lower density of ICC in the terminal intestine of rats with ARM.
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Affiliation(s)
- M Macedo
- Department of Surgery, Branch of Pediatric Surgery, Federal University of São Paulo (UNIFESP), Medical School, São Paulo, Brazil.
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Abstract
An experiment based on astrocyte immunoreactivity to glial fibrillary acidic protein (GFAP) was designed to determine whether the astrocyte response in canine distemper encephalitis (CDE) was associated with the age of the animal, type of lesion and the cerebellar region affected. Four histopathological types of CDE lesion were examined, namely acute (11 dogs), acute with necrosis (four dogs), subacute (22 dogs) and chronic (six dogs). The animals were divided into three age groups, namely, 0-2 years (27 dogs), 2.1-4 years (12 dogs), and 4.1-12 years (four dogs). Three different cerebellar regions were evaluated. Cerebellar sections from three healthy dogs were used for control purposes. The highest number of astrocytes occurred in the cerebellar white matter and in dogs with acute distemper encephalopathy. In animals with subacute distemper encephalitis, the numbers of astrocytes appeared to increase with age, but the opposite effect occurred in dogs with acute or chronic encephalitis; age appeared not to influence the astrocyte numbers in dogs suffering from acute encephalitis with necrosis.
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Affiliation(s)
- S A Headley
- Centro de Ensino Superior de Maringá (CESUMAR), Jd. Aclimação, Maringá, PR, 87050-390, Brazil
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Abstract
Plasmacytoma is an unusual disease of plasma cells, its presentation in the urethra is rare. We report the sixth known case of primary urethral plasmacytoma, which was treated by surgical excision, without recurrence for 3 years of follow-up.
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Affiliation(s)
- N Lemos
- Department of Surgery, Universitary Hospital of Santa Maria, RS, Brazil
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Abstract
This paper reviews important aspects about teaching nursing, in order to give nursing professionals an outline of the present pedagogical approaches (Traditional, Cognitivist, Behaviorist, Humanistic, Sociocultural), so that they can reflect upon their role as educators.
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Affiliation(s)
- M A Pettengill
- Mestrandas do Programa de Pós-Graduação em Enfermagem da EEUSP
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Abstract
OBJECTIVE The characterization of drug users, especially as regards self-medication and the determination of its prevalence in the population studied. MATERIAL AND METHOD About 413 people that had used drugs in the previous month were interviewed. RESULTS From the interviewed, 69.9% used medicines and of those 76.1% were self medicated. Headache (28.8%) was the main complaint among the self-medicated group. Acetilsalicilic acid was the most frequently used medicine (25.4%). As regards the drugs utilized, 51.2% of the users had received a recommendation from a third party and 51.7% used old prescriptions, given in previous consultations. CONCLUSION Age, schooling and absence of periodic medical consultation were significant statistical factors in self-medication.
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Affiliation(s)
- J F Vilarino
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, RS-Brasil
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Lemos HN, de Souza MM, de Campos HH, de Abreu VL, Soares IC, Reis W. Effect of one booster dose in antirabies vaccination. Biologicals 1992; 20:171-5. [PMID: 1457103 DOI: 10.1016/s1045-1056(05)80035-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The antibody response obtained after one booster dose of rabies vaccine prepared in suckling mice brains at Serviço de Saúde Pública da Cidade do Rio de Janeiro is described. Four prime vaccinal groups were used: group I, persons who had received 16 doses 10 years before this investigation; group II, persons who had received 5 doses of the vaccine 10 years before; group III, persons who had received 9 doses 5 years before; and group IV, persons who had received 16 doses 5 years before. One booster dose of the vaccine was administered to all persons involved in the study. Blood samples were collected before vaccination (day 0), then 7 and 30 days after vaccination. Antibody titres were determined by seroneutralization test in mice (SWM). The results demonstrated that all persons who had been treated with 5, 9 or 16 doses of the vaccine 5 to 10 years before had their antibody titres increased on the 7th and 30th days after one booster dose.
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Affiliation(s)
- H N Lemos
- Departamento de Virologia, Universidade Federal do Rio de Janeiro, Brazil
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