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de Oliveira Silva CB, Araújo B, Ongaratti BR, dos Santos TM, Rech CGSL, Coutinho LB, Ferreira NP, da Costa Oliveira M, Pereira-Lima JFS. Preoperative hematological inflammatory markers associated with grade and survival in Meningiomas. Surg Exp Pathol 2022. [DOI: 10.1186/s42047-022-00106-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractMeningiomas represent the most frequently diagnosed intracranial tumors. Inflammatory cells present in the tumor can modulate both antitumor and protumor functions, and modify the therapeutic response. Hematological inflammatory parameters have provided prognostic information useful in the treatment and clinical evaluation of several tumors. The aim of this study was to evaluate preoperative hematological markers of patients with meningiomas and to relate them to clinical variables and recurrence-regrowth free survival. Eighty-nine patients without corticosteroid therapy were included. Blood test results and tumor characteristics were collected from medical records. Associations between clinical characteristics and the recurrence-regrowth free survival (RFS) were evaluated using Cox proportional hazard analysis and Kaplan-Meier curves. The receiver operating characteristic (ROC) curves were constructed. Of the 89 cases, 73 (82%) were grade I and 16 (18%) grade II. The mean age was 53 ± 13.9 years, with higher frequency in women. Anemia was observed in 23.6% and neutrophilia in 42% of the patients. In univariate analysis, anemia (p = 0.04), neutrophilia (p = 0.02) and neutrophil/lymphocyt ratio (NLR) (p = 0.02) were associated with an increased risk of recurrence-regrowth and shorter RFS. In multivariate analysis, anemia and NLR > 4.1 represented a higher risk of recurrence-regrowth (p = 0.003). The ROC curve analysis showed that only the lymphocyte/monocyte (L/M) > 2.5 was able to predict the tumor grade. The preoperative presence of anemia, neutrophilia, NLR > 4.1 and L/M > 2.5 were associated with a worse prognosis in meningiomas. The use of preoperative hematological inflammatory parameters as prognostic factors can be promissing for evaluation and follow-up of meningiomas.
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Silva GGD, Britz JPE, Martins OG, Ferreira NP, Ferreira MP, Worm PV. IMPACT OF SURGERY ON AMBULATORY STATUS IN PATIENTS WITH SYMPTOMATIC NEOPLASTIC SPINAL CORD COMPRESSION IN SOUTHERN BRAZIL. Coluna/Columna 2022. [DOI: 10.1590/s1808-185120222103263573] [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: 11/21/2022] Open
Abstract
ABSTRACT Background: Spinal cord compression is a common complication of spine metastasis and multiple myeloma. About 30% of patients with cancer develop symptomatic spinal metastases during their illness. Prompt diagnosis and surgical treatment of these lesions, although palliative, are likely to reduce the morbidity and improve quality of life by improving ambulatory function. Study Design: Retrospective review of medical records. Objective: To evaluate postoperative functional recovery and the epidemiological profile of neoplastic spinal cord compression in two neurosurgical centers in southern Brazil. Methods: We retrospectively analyzed the data of all patients who underwent palliative surgery for symptomatic neoplastic spine lesion from metastatic cancer, in two neurosurgical centers, between January 2003 and July 2021. The variables age, sex, neurological status, histological type, affected segment, complications and length of hospitalization were analyzed. Results: A total of 82 patients were included. The lesions occurred in the thoracic spine in 60 cases. At admission, 95% of the patients had neurological deficits, most of which were Frankel C (37%). At histopathological analysis, breast cancer was the most common primary site. After surgery, the neurological status of 46 patients (56%) was reclassified according to the Frankel scale. Of these, 22 (47%) regained ambulatory capacity. Conclusion: Surgical treatment of metastatic spinal cord compression improved neurological status and ambulatory ability in our sample. Level of evidence II; Retrospective study.
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Gago G, Giacomini LV, Gibbon FDL, Neto EGDC, Kowacs F, Ferreira NP. HTLV-1-Associated Myelopathy/Tropical Spastic Paraparesis Overlapping Ossification of the Ligamentum Flavum. Indian Journal of Neurosurgery 2020. [DOI: 10.1055/s-0040-1710106] [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: 10/23/2022] Open
Abstract
AbstractHTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is an important cause of nontraumatic and noncompressive chronic myelopathy which generally has no improvement regardless of treatment. On the other hand, ossification of the ligamentum flavum (OLF) is also a cause of myelopathy; however, it can improve in some cases when surgical treatment is well applied. In this case report, we presented a case of a patient with HAM/TSP overlapping OLF which showed some improvement with surgical treatment.
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Affiliation(s)
- Guilherme Gago
- Hospital São José, Complexo Hospitalar Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luidia Varrone Giacomini
- Hospital São José, Complexo Hospitalar Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | - Fernando Kowacs
- Hospital São José, Complexo Hospitalar Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Nelson Pires Ferreira
- Hospital São José, Complexo Hospitalar Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
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Souza MHN, Pinho AA, Graever L, Pereira AR, Santana AMS, Junior CJPP, Oliveira JTS, Pereira MEFL, Ferreira NP, Vieira ES. Access of the LGBTQI+ population from the perspective of community health agents, Brazil. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.770] [Citation(s) in RCA: 1] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
In Brazil, according to the National Policy for Integral Health for Lesbians, Gays, Bisexuals, Transvestites, Transsexuals, Queers, Intersexuals and other identities (LGBTQI+), it is increasingly necessary to guarantee access to the health system, as well as to train qualified professionals.
Objective
describing the perception of Community Health Agents (CHA) about the approach to and access of LGBTQI+ people to primary health care.
Methods
Quantitative research conducted in October 2019 with 60 community health workers from the municipality of Rio de Janeiro, Brazil. The research was approved by the Ethics and Research Committees of the participating institutions.
Results
it was found that 100% of the CHA have already supported LGBTQI+ people, 19.2% identify prejudiced attitudes and delay in service as barriers to accessing the unit, and 19.2% recognize the presence of group activities in the unit. In the view of the CHA interviewed, LGBTQI+ patients could be approached in groups (50%), individually (19.2%) or both (30.8%). Among the strategies to increase the access of those patients, 61.5% are unaware and 38.5% listed possible strategies to be implemented in the unit. The topics of interest for discussion were: approach to reception, sexual identity, prejudice, psychological support, family, diseases, violence, and rights.
Conclusions
From the perspective of community health agents, the study allowed reflections on how approaching and making access available to LGBTQI+ patients in the primary care network. This evidences stigmas and fragility of professionals in the individual and collective approach to deal with issues regarding guidance sexuality and gender identity of the clientele served. It is important to emphasize permanent education actions among professionals, aiming at a comprehensive health care for the LGBTQI+ population.
Key messages
Welcoming and qualified listening promote comprehensive health care for the LGBTQI+ population. Improvements in the access of the LGBTQI+ population to the primary health care network decrease morbidity and mortality.
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Affiliation(s)
- M H N Souza
- Nursing School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A A Pinho
- Collective Health Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - L Graever
- Municipal Health Secretary, Rio de Janeiro, Brazil
| | - A R Pereira
- Municipal Health Secretary, Rio de Janeiro, Brazil
| | - A M S Santana
- Nursing School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - C J P P Junior
- Nursing School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - J T S Oliveira
- Faculty of Dental, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - M E F L Pereira
- Collective Health Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - N P Ferreira
- Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - E S Vieira
- Institute of Psychology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Leães Rech CGS, Minuzzi RK, Silva CBDO, Araújo B, Mafalda T, Ferreira NP, Oliveira MDC, Pereira-Lima JFS. SUN-130 Preoperative Hematological Parameters Associated with Recurrence or Regrowth of Meningiomas. J Endocr Soc 2020. [PMCID: PMC7208882 DOI: 10.1210/jendso/bvaa046.553] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Meningiomas represent the most frequently diagnosed intracranial tumors. Inflammation and immune processes may play an important role in therapeutic response as well as in anti- and pro-tumor modulating function. In tumors, inflammatory markers have been able to provide useful prognostic information for treatment or clinical evaluation of patients. The aim of this study was to investigate preoperative hematological markers concerning recurrence or regrowth and clinical variables in meningioma. Eighty nine patients with no corticosteroid therapy were included. Blood tests and tumor characteristics were collected from medical records. Recurrence-free survival was evaluated using Cox regression and Kaplan-Meier curves. Of the 89 cases, 73 (82%) were grade I and 16 (18%) grade II. The mean age was 53±13.9 years, with higher frequency in women, 2:1 proportion. The most frequent subtypes were meningothelial (40.4%), transitional (23.5%) and atypical (17.9%), 64% with peripheral location and 64% had a size greater than 3 cm. Regarding tumor resection, 49 (55.1%) underwent complete surgery (40 remained with tumor (81.6%) and 9 relapse (18.3%)) and 40 (44.9%) submitted to partial resection surgery (29 remained with persistent lesion (72.5%) and 11 regrowth (25%)). In total, 20 (22.4%) cases of recurrence or regrowth were observed. The median recurrence-regrowth free survival (RFS) was 62 months, 96.1% at 1 year, 67.4% at 3 years and 51.2% at 5 years. In univariate analysis, anemia (p=0.04), neutrophilia (p=0.02) and neutrophilis/lymphocyts ratio (NLR) (p=0.03) were associated with an increased risk of recurrence or regrowth and poor RFS. In multivariate, the interaction between anemia and NLR >4 represented a higher risk of recurrence or regrowth (p=0.003). The preoperative presence of anemia, neutrophilia, and NLR was associated with an increased risk of recurrence or regrowth in meningiomas, emphasizing the importance of preoperative evaluation of these parameters.
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Affiliation(s)
| | | | | | - Bruna Araújo
- Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Tainá Mafalda
- Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
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Leães Rech CGS, Silva CBDO, Ongaratti B, Trott G, Minuzzi RK, Ferreira NP, Oliveira MDC, Pereira-Lima JFS. SAT-122 Expression of Cell Synthesis and Dna Repair Markers in Meningioma Recurrence or Regrowth. J Endocr Soc 2020. [PMCID: PMC7209537 DOI: 10.1210/jendso/bvaa046.741] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Meningiomas correspond to 37% of intracranial tumors and are considered the second most common neoplasm of the central nervous system in adults. Most of them are benign with slow growth pattern, common from the fifth decade, more frequent in women and with high recurrence rates. In tumors, there is a reduction in the efficiency of DNA error repair, allowing the proliferation of tumor cells. In this work, we evaluated the protein expression of markers involved in cell synthesis (cyclin D1) and repair of DNA errors (MUTYH, XPF, and XPG) in meningiomas. To date, this is the first study to use the immunohistochemical technique in the evaluation of these repair proteins, relating them to clinical data, tumor variables and recurrence-regrowth free survival. 85 samples were included in the study, patients with a mean age of 52 + 13.3 years, 68% female, in proportion 2:1. Most cases were classified as grade I (79%), meningothelial subtype (38%) and transitional (25%). Regarding surgery, 59% of the patients underwent total resection. Regarding location, the most common was the peripheral (62.2%). Most tumors (64%) were larger than 3cm, with a mean of 3.6±2cm. The median recurrence-regrowth free survival was 67 months (95% CI:57.8-76.6). According to the Kaplan-Meier curve, the recurrence-regrowth free survival rate was 94.4% at 1 year, 76.6% at 2 years and 64.7% at 3 years and 49.4% at 5 years. Grades II and III were prognostic factors for tumor recurrence-regrowth (p<0.05). Cyclin D1 was positive in 92%, 77% in grade I and 23% in grades II and III. A statistically significant relationship was found between cyclin D1 and tumor grade (p = 0.001), with higher expression in grade II and III. Repair proteins were expressed in most meningiomas. MUTYH (63.5%), 43.5% in grades I and 20% in grades II and III, with a significant relationship between grades II and III and, expression 10-50% (p=0.02). Significant association was observed with MUTYH (p=0.001) and XPF (p=0.019). XPF and XPG were associated with grades II and III (p=0.002 and p<0.001) and XPF with size >3cm (p=0.03). There was a positive correlation between XPF and XPG (p= 0.02) and between MUTYH and XPF (p=0.003). XP proteins were related to recurrence-regrowth (p=0.04), but not with recurrence-regrowth free survival. Our results demonstrate the activation of repair pathways and increased cell synthesis in grades II and III in meningiomas. Cellular synthesis and DNA repair markers are important tools to broaden knowledge about the biological behavior of meningiomas.
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Affiliation(s)
| | | | - Barbara Ongaratti
- Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Geraldine Trott
- Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
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de Azevedo Oliveira B, Araujo B, Dos Santos TM, Ongaratti BR, Rech CGSL, Ferreira NP, Pereira-Lima JFS, da Costa Oliveira M. The acromegalic spine: fractures, deformities and spinopelvic balance. Pituitary 2019; 22:601-606. [PMID: 31556014 DOI: 10.1007/s11102-019-00991-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Axial skeleton arthropathy and osteoporotic vertebral fractures are common findings in acromegalic patients and can result in severe spinal deformity. OBJECTIVE To investigate the presence of spinal fractures and deformities, sagittal imbalances, and spinopelvic compensatory mechanisms in acromegalics. PATIENTS AND METHODS 58 patients with acromegaly from a referral neuroendocrinology center were prospectively evaluated by panoramic spine radiographs to detect the presence of fractures and scoliosis, to measure thoracic kyphosis, lumbar lordosis (LL), pelvic incidence (PI), pelvic tilt (PT) and sagittal vertical axis (SVA). Sagittal imbalance criteria were considered: thoracic kyphosis > 50°, PI-LL > 10°, PT > 20° and SVA > 5 cm. Their medical records were analyzed for clinical and laboratorial data. RESULTS The prevalence of fractures was 13.8%, predominantly in the thoracic spine, with mild and anterior wedge compressions. Scoliosis was present in 34.5% of the cases, all with degenerative lumbar curve apex. Thoracic kyphosis > 50º occurred in 36.8% of patients, PI-LL > 10° in 48.3%, PT > 20° in 41.4% and SVA > 5 cm in 12.1%. CONCLUSION Increased number of vertebral fractures and high prevalence of spinal deformities related to sagittal imbalance were detected, indicating the importance of monitoring bone comorbidities in acromegaly, with radiological evaluation of the spine as part of the follow up.
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Affiliation(s)
- Bruno de Azevedo Oliveira
- Programa de Pós-Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil
| | - Bruna Araujo
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Rua Sarmento Leite, 245; sala 402, prédio 1 /90050-170 - Porto Alegre, Porto Alegre, RS, Brasil
| | - Tainá Mafalda Dos Santos
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Rua Sarmento Leite, 245; sala 402, prédio 1 /90050-170 - Porto Alegre, Porto Alegre, RS, Brasil
| | - Bárbara Roberta Ongaratti
- Programa de Pós-Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil
| | - Carolina Garcia Soares Leães Rech
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Rua Sarmento Leite, 245; sala 402, prédio 1 /90050-170 - Porto Alegre, Porto Alegre, RS, Brasil
| | - Nelson Pires Ferreira
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Rua Sarmento Leite, 245; sala 402, prédio 1 /90050-170 - Porto Alegre, Porto Alegre, RS, Brasil
| | - Júlia Fernanda Semmelmann Pereira-Lima
- Programa de Pós-Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Rua Sarmento Leite, 245; sala 402, prédio 1 /90050-170 - Porto Alegre, Porto Alegre, RS, Brasil
| | - Miriam da Costa Oliveira
- Programa de Pós-Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil.
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Rua Sarmento Leite, 245; sala 402, prédio 1 /90050-170 - Porto Alegre, Porto Alegre, RS, Brasil.
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Trott G, Ongaratti BR, de Oliveira Silva CB, Abech GD, Haag T, Rech CGSL, Ferreira NP, da Costa Oliveira M, Pereira-Lima JFS. PTTG overexpression in non-functioning pituitary adenomas: Correlation with invasiveness, female gender and younger age. Ann Diagn Pathol 2019; 41:83-89. [DOI: 10.1016/j.anndiagpath.2019.04.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/11/2019] [Accepted: 04/28/2019] [Indexed: 12/27/2022]
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Petry C, Poli JHZ, de Azevedo Dossin I, Rech CGSL, Pereira Lima JFS, Ferreira NP, da Costa Oliveira M. Evaluation of the potential of the Ki67 index to predict tumor evolution in patients with pituitary adenoma. Int J Clin Exp Pathol 2019; 12:320-326. [PMID: 31933748 PMCID: PMC6944029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/29/2018] [Indexed: 06/10/2023]
Abstract
The aggressive course of a number of pituitary adenomas requires the investigation of potential predictors. This study aimed to investigate the proliferation marker Ki67 as a predictor of postoperative outcome in patients with pituitary adenoma regarding recurrence and regrowth of the tumor, using a Ki67 cut-off value of 3%. This retrospective study included 52 patients with pituitary adenoma who had undergone adenomectomy and had a pituitary image taken at least 1 year after surgery. Patients were divided according to Ki67 expression into high (≥3%) vs. low (<3%) levels of Ki67. The two groups were similar regarding the preoperative tumor invasion grade. The Ki67 index ranged from 0 to 30%; in 23 cases, Ki67 was ≥3%. The two groups were similar regarding tumor recurrence and regrowth: 4 cases (28%) of recurrence in the Ki67<3% group vs. none in the Ki67≥3% group (P=0.26); and 2 cases (13%) of regrowth in the Ki67<3% group vs. 7 cases (43%) in the Ki67≥3% group (P=0.11). A subgroup analysis was performed for nonfunctioning adenomas. Recurrence rates remained similar between groups (Ki67<3% group: 1 case [20%]; Ki67≥3% group: none; P>0.99), whereas regrowth rates were higher in the Ki67≥3% group (6 cases [67%] vs. 2 cases [17%] in the Ki67<3% group; P=0.03). The patient with the highest Ki67 index (30%) developed pituitary carcinoma. The results allow us to suggest the adoption of a stricter control of image monitoring in nonfunctioning adenomas with incomplete resection associated with a Ki67 index ≥3%.
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Affiliation(s)
- Carolina Petry
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA)Porto Alegre, RS, Brazil
- Neuroendocrinology Center, Santa Casa of Porto Alegre/UFCSPAPorto Alegre, RS, Brazil
| | | | | | | | - Júlia Fernanda Semmelmann Pereira Lima
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA)Porto Alegre, RS, Brazil
- Neuroendocrinology Center, Santa Casa of Porto Alegre/UFCSPAPorto Alegre, RS, Brazil
| | - Nelson Pires Ferreira
- Neuroendocrinology Center, Santa Casa of Porto Alegre/UFCSPAPorto Alegre, RS, Brazil
| | - Miriam da Costa Oliveira
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA)Porto Alegre, RS, Brazil
- Neuroendocrinology Center, Santa Casa of Porto Alegre/UFCSPAPorto Alegre, RS, Brazil
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Brasil AVB, Fruett da Costa PR, Vial ADM, Barcellos GDC, Zauk EB, Worm PV, Ferreira MP, Ferreira NP. Cervicothoracic Lordosis Can Influence Outcome After Posterior Cervical Spine Surgery. Open Orthop J 2018; 12:91-98. [PMID: 29619122 PMCID: PMC5859459 DOI: 10.2174/1874325001812010091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/02/2018] [Accepted: 02/02/2018] [Indexed: 11/24/2022] Open
Abstract
Background: Previous studies on the correlation between cervical sagittal balance with improvement in quality of life showed significant results only for parameters of the anterior translation of the cervical spine (such as C2-C7 SVA). Objective: We test whether a new parameter, cervicothoracic lordosis, can predict clinical success in this type of surgery. Methods: The focused group involved patients who underwent surgical treatment of cervical degenerative disk disease by the posterior approach, due to myelopathy, radiculopathy or a combination of both. Neurologic deficit was measured before and after surgery with the Nurick Scale, postoperative quality of life, physical and mental components of SF-36 and NDI. Cervicothoracic lordosis and various sagittal balance parameters were also measured. Cervicothoracic lordosis was defined as the angle between: a) the line between the centroid of C2 and the centroid of C7; b) the line between the centroid of C7 and the centroid of T6. Correlations between postoperative quality of life and sagittal parameters were calculated. Results: Twenty-nine patients between 27 and 78 years old were evaluated. Surgery types were simple decompression (laminectomy or laminoforaminotomy) (3 patients), laminoplasty (4 patients) and laminectomy with fusion in 22 patients. Significant correlations were found for C2-C7 SVA and cervicothoracic lordosis. C2-C7 SVA correlated negatively with MCS (r=-0.445, p=0.026) and PCS (r=-0.405, p=0.045). Cervicothoracic lordosis correlated positively with MCS (r=0.554, p= 0.004) and PCS (r=0.462, p=0.020) and negatively with NDI (r=-0.416, p=0.031). Conclusion: The parameter cervicothoracic lordosis correlates with improvement of quality life after surgery for cervical degenerative disk disease by the posterior approach.
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Affiliation(s)
- Albert Vincent Berthier Brasil
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Pablo Ramon Fruett da Costa
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Antonio Delacy Martini Vial
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Gabriel da Costa Barcellos
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Eduardo Balverdu Zauk
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Paulo Valdeci Worm
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Marcelo Paglioli Ferreira
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
| | - Nelson Pires Ferreira
- Department of Neurosurgery, Hospital São José - Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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13
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Mezzomo LC, Pesce FG, Marçal JMB, Haag T, Ferreira NP, Lima JFSP, Leães CGS, Oliveira MC, da Fonte Kohek MB. Decreased TAp63 and ΔNp63 mRNA Levels in Most Human Pituitary Adenomas Are Correlated with Notch3/Jagged1 Relative Expression. Endocr Pathol 2017; 28:13-21. [PMID: 28078618 DOI: 10.1007/s12022-016-9463-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 01/16/2023]
Abstract
Despite recent advances in molecular genetics, the pituitary adenoma initiation, development, progress, and the molecular basis of their unique features are still poorly understood. In this sense, it is proposed that stem cell could be involved in pituitary adenoma tumorigenesis. It is suggested that TP63 has important functions in stem cells, and it may have interplay of TP63 and Notch and its ligand Jagged in this process. This study aimed to evaluate the distinct expression of TP63 isoforms (TAp63 and ΔNp63), as well as its correlation with Notch3 receptor and its ligand Jagged1 in human pituitary adenomas at the messenger RNA (mRNA) level. We included 77 pituitary adenoma tumor samples from patients who underwent surgical resection. The expression levels of TP63 isoforms (TAp63 and ΔNp63) and Notch3 and its ligand Jagged1 were evaluated by qRT-PCR using isoform-specific primers. We also evaluated proliferation index immunohistochemically using KI-67 antibody. The expression levels were associated with clinical outcomes, as age, gender, tumor size, and tumor subtype. In summary, we found that mRNA expression of both TP63 isoforms decreased in pituitary adenomas compared with normal pituitary control. On the other hand, there was an increase of relative Notch3 and Jagged1 mRNA expression in the majority of examined samples. The mRNA expression of three genes evaluated was correlated and statistically significantly. There was no significant association between gene expression and the analyzed clinical data. The current study has provided the first time evidence that Tap63 and ΔNp63 isoforms are underexpressed in most pituitary adenomas. These results are correlated with Notch3 and its ligand Jagged1 overexpression, corroborating previous studies pointing its antagonistic interactions.
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Affiliation(s)
- Lisiane Cervieri Mezzomo
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
- Laboratory of Molecular Biology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
| | - Frederico Giacomoni Pesce
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
- Laboratory of Molecular Biology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Josenel Maria Barcelos Marçal
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Taiana Haag
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
- Laboratory of Molecular Biology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | | | - Julia Fernanda Semmelmann Pereira Lima
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
- Neuroendocrinology Center of Santa Casa de Misericórdia, Porto Alegre, RS, Brazil
| | | | - Miriam Costa Oliveira
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
- Neuroendocrinology Center of Santa Casa de Misericórdia, Porto Alegre, RS, Brazil
| | - Maria Beatriz da Fonte Kohek
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
- Laboratory of Molecular Biology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
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Nicoletti NF, Erig TC, Zanin RF, Roxo MR, Ferreira NP, Gomez MV, Morrone FB, Campos MM. Pre-clinical evaluation of voltage-gated calcium channel blockers derived from the spider P. nigriventer in glioma progression. Toxicon 2017; 129:58-67. [PMID: 28202361 DOI: 10.1016/j.toxicon.2017.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/01/2017] [Accepted: 02/02/2017] [Indexed: 01/30/2023]
Abstract
This study investigated the effects of P/Q- and N-type voltage-gated calcium channel (VGCC) blockers derived from P. nigriventer in glioma progression, by means of in vitro and in vivo experiments. Glioma cells M059J, U-138MG and U-251MG were used to evaluate the antiproliferative effects of P/Q- and N-type VGCC inhibitors PhTx3-3 and Phα1β from P. nigriventer (0.3-100 pM), in comparison to MVIIC and MVIIA from C. magus (0.3-100 pM), respectively. The toxins were also analyzed in a glioma model induced by implantation of GL261 mouse cells. PhTx3-3, Phα1β and MVIIA displayed significant inhibitory effects on the proliferation and viability of all tested glioma cell lines, and evoked cell death mainly with apoptosis characteristics, as indicated by Annexin V/propidium iodide (PI) positivity. The antiproliferative effects of toxins were confirmed by flow cytometry using Ki67 staining. None of the tested toxins altered the proliferation rates of the N9 non-tumor glial cell line. Noteworthy, the administration of the preferential N-type VGCC inhibitors, Phα1β (50 pmol/site; i.c.v.), its recombinant form CTK 01512-2 (50 pmol/site; i.c.v. and i.t.), or MVIIA (10 pmol/site; i.c.v.) caused significant reductions of tumor areas in vivo. N-type VGCC inhibition by Phα1β, CTK 01512-2, and MVIIA led to a marked increase of GFAP-activated astrocytes, and Iba-1-positive microglia, in the peritumoral region, which might explain, at least in part, the inhibitory effects of the toxins in tumor development. This study provides novel evidence on the potential effects of P. nigriventer-derived P/Q-, and mainly, N-type VGCC inhibitors, in glioma progression.
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Affiliation(s)
- Natália Fontana Nicoletti
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; PUCRS, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brazil
| | | | - Rafael Fernandes Zanin
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil
| | - Marcelo Ricardo Roxo
- Serviço de Neurocirurgia, Hospital São José, Irmandade da Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil; UCS, Faculdade de Medicina, Departamento de Neurocirurgia, Caxias do Sul, RS, Brazil
| | - Nelson Pires Ferreira
- Serviço de Neurocirurgia, Hospital São José, Irmandade da Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Marcus Vinicius Gomez
- UFMG, Faculdade de Medicina, Laboratório de Neurociências, Belo Horizonte, MG, Brazil
| | - Fernanda Bueno Morrone
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; PUCRS, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brazil; PUCRS, Faculdade de Farmácia, Porto Alegre, RS, Brazil
| | - Maria Martha Campos
- PUCRS, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; PUCRS, Instituto de Toxicologia e Farmacologia, Porto Alegre, RS, Brazil; PUCRS, Faculdade de Odontologia, Laboratório de Patologia, Porto Alegre, RS, Brazil.
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15
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Nicoletti NF, Sénécal J, da Silva VD, Roxo MR, Ferreira NP, de Morais RLT, Pesquero JB, Campos MM, Couture R, Morrone FB. Primary Role for Kinin B1 and B2 Receptors in Glioma Proliferation. Mol Neurobiol 2016; 54:7869-7882. [DOI: 10.1007/s12035-016-0265-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 10/26/2016] [Indexed: 11/30/2022]
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16
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Brasil AVB, Teles AR, Roxo MR, Schuster MN, Zauk EB, Barcellos GDC, Costa PRFD, Ferreira NP, Kraemer JL, Ferreira MP, Gobbato PL, Worm PV. A simple scoring system for predicting early major complications in spine surgery: the cumulative effect of age and size of surgery. Arq Neuro-Psiquiatr 2016; 74:803-809. [DOI: 10.1590/0004-282x20160127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Accepted: 06/20/2016] [Indexed: 11/22/2022]
Abstract
ABSTRACT Objective To analyze the cumulative effect of risk factors associated with early major complications in postoperative spine surgery. Methods Retrospective analysis of 583 surgically-treated patients. Early “major” complications were defined as those that may lead to permanent detrimental effects or require further significant intervention. A balanced risk score was built using multiple logistic regression. Results Ninety-two early major complications occurred in 76 patients (13%). Age > 60 years and surgery of three or more levels proved to be significant independent risk factors in the multivariate analysis. The balanced scoring system was defined as: 0 points (no risk factor), 2 points (1 factor) or 4 points (2 factors). The incidence of early major complications in each category was 7% (0 points), 15% (2 points) and 29% (4 points) respectively. Conclusions This balanced scoring system, based on two risk factors, represents an important tool for both surgical indication and for patient counseling before surgery.
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Ongaratti BR, Silva CBO, Trott G, Haag T, Leães CGS, Ferreira NP, Oliveira MC, Pereira-Lima JFS. Expression of merlin, NDRG2, ERBB2, and c-MYC in meningiomas: relationship with tumor grade and recurrence. Braz J Med Biol Res 2016; 49:e5125. [PMID: 27007654 PMCID: PMC4819410 DOI: 10.1590/1414-431x20155125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 09/01/2015] [Accepted: 12/17/2015] [Indexed: 11/22/2022] Open
Abstract
Meningiomas are common, usually benign tumors of the central nervous system that have a high rate of post-surgical recurrence or regrowth. We determined expression of the proteins merlin, NDRG2, ERBB2, and c-MYC in meningiomas using immunohistochemistry and assessed relationships between protein expression and gender, age, tumor grade, and recurrence or regrowth. The study sample comprised 60 patients, (44 women and 16 men) with a mean age of 53.2 ± 12.7 years. Tumors were classified as grade I (n=48) or grades II and III (n=12). Expression of merlin, NDRG2, ERBB2, and c-MYC was not significantly different statistically with relation to gender, age, or meningioma recurrence or regrowth. Merlin was expressed in 100% of the cases. No statistically significant difference between tumor grade and recurrence or regrowth was identified. Statistically significant differences were identified between the mean age of patients with grade I (54.83 ± 11.60) and grades II and III (46.58 ± 15.08) meningiomas (P=0.043), between strong c-MYC expression and grades II and III (P<0.001), and between partial surgical resection and tumor recurrence or regrowth (P<0.001). These findings reveal the lower mean age among grades II and III meningioma patients than grade I patients, the influence of the protein merlin on tumorigenesis, the association of c-MYC with aggressive meningiomas, and that partial surgical resection is associated with tumor recurrence or regrowth.
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Affiliation(s)
- B R Ongaratti
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C B O Silva
- 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
| | - T Haag
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C G S Leães
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - N P Ferreira
- Centro de Neuroendocrinologia, Irmandade Santa Casa de Misericórdia 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
| | - J F S Pereira-Lima
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
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Silva CBDO, Ongaratti BR, Trott G, Haag T, Ferreira NP, Leães CGS, Pereira-Lima JFS, Oliveira MDC. Expression of somatostatin receptors (SSTR1-SSTR5) in meningiomas and its clinicopathological significance. Int J Clin Exp Pathol 2015; 8:13185-13192. [PMID: 26722517 PMCID: PMC4680462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 09/25/2015] [Indexed: 06/05/2023]
Abstract
Meningiomas are benign brain tumors that are usually to recur. Studies have shown in vitro and in vivo that meningiomas, regardless of histology and classification, express somatostatin receptors (SSTRs). We investigated the immunohistochemical expression of five SSTR subtypes (SSTR1-SSTR5) in tumor tissue sections from 60 patients with diagnosis of meningioma who underwent surgical resection and relating it to patient age and sex, tumor histology, location, regrowth/recurrence and follow-up. Mean (SD) patients age was 53.18 (12.6) years and 44 were women (73.3%). According to the WHO histological grading criteria, 47 (78.3%) meningiomas were grade I, 11 (18.3%) were grade II, and 2 (3.3%) were grade III. All five SSTRs were expressed in our sample, at frequencies ranging from 61.6 to 100%, with a predominance of SSTR2. SSTR5 was more frequently expressed in tumors benign than in tumors malignant (P<0.013). Recurrence-free survival rate at 2 years was 75.2%. There were no significant differences in SSTR expression regarding age, sex, tumor location and regrowth/recurrence. SSTR expression was detected at a significant frequency in this series. SSTR5 showed higher expression in tumors benign supporting the use of these SSTRs in diagnostic of meningiomas and their influence in process of tumorigenesis in meningiomas recurrence.
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Affiliation(s)
- Camila Batista de Oliveira Silva
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Bárbara Roberta Ongaratti
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Geraldine Trott
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Taiana Haag
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Nelson Pires Ferreira
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Carolina Garcia Soares Leães
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Julia Fernanda Semmelmann Pereira-Lima
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
| | - Miriam da Costa Oliveira
- Department of Laboratory of Pathology, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
- Neuroendocrinology Center, Hospital Complex Santa Casa de Porto Alegre, University of Health Sciences of Porto AlegreRio Grande do Sul, Brazil
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Worm PV, Ferreira NP, Finger G, Collares MVM. Autologous cranial bone graft use for trepanation reconstruction. J Craniomaxillofac Surg 2015; 43:1781-4. [PMID: 26343204 DOI: 10.1016/j.jcms.2015.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 05/06/2015] [Revised: 08/04/2015] [Accepted: 08/07/2015] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Esthetic deformities in the human skull are a subject of concern among neurosurgical patients and neurosurgeons; they can be disfiguring and harm the patient's social relationships. To access inner structures, neurosurgical operations require skull trepanation, a process that frequently involves loss of bone tissue and leads to esthetic problems. Satisfactory reconstruction is a challenge, and neurosurgeons search for an implant which ideally is organic and low cost and does not cause an immunological or allergic reaction. Therefore, autologous bone tissue remains the gold standard for reconstruction. OBJECTIVES To develop a technique that allows neurosurgeons to rebuild the trepanation hole with a better esthetic outcome. METHOD Craniotomy orifices in 108 patients were closed with a graft obtained from the cranial bone inner layer. In order to remove the graft a specially made trephine was used. RESULTS No grafts dislocated during follow-up. Cosmetic outcomes and results seen on image examinations were favorable for this new technique when compared with others previously described in medical literature. CONCLUSION The authors present a new and feasible trepanation reconstruction technique that allows a better esthetic outcome without increasing the surgical risk for the patient, or making the surgical procedure longer or more expensive.
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Affiliation(s)
- Paulo Valdeci Worm
- Post Graduation Program in Medicine: Surgical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Department of Neurological Surgery, São Jose Hospital, Santa Casa Hospital Complex, Porto Alegre, RS, Brazil; Neurosurgery Department of Cristo Redentor Hospital, Porto Alegre, RS, Brazil.
| | - Nelson Pires Ferreira
- Department of Neurological Surgery, São Jose Hospital, Santa Casa Hospital Complex, Porto Alegre, RS, Brazil
| | - Guilherme Finger
- Neurosurgery Department of Cristo Redentor Hospital, Porto Alegre, RS, Brazil
| | - Marcus Vinicius Martins Collares
- Post Graduation Program in Medicine: Surgical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Department of Plastic and Craniomaxillofacial Surgery, Hospital de Clínicas of Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Trott G, Pereira-Lima JFS, Leães CGS, Ferreira NP, Barbosa-Coutinho LM, Oliveira MC. Abundant immunohistochemical expression of dopamine D2 receptor and p53 protein in meningiomas: follow-up, relation to gender, age, tumor grade, and recurrence. ACTA ACUST UNITED AC 2015; 48:415-9. [PMID: 25742638 PMCID: PMC4445664 DOI: 10.1590/1414-431x20144163] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 07/20/2014] [Accepted: 11/26/2014] [Indexed: 11/22/2022]
Abstract
Meningiomas are common, usually benign tumors, with a high postoperative recurrence
rate. However, the genesis and development of these tumors remain controversial. We
aimed to investigate the presence and implications of a mutated p53 protein and
dopamine D2 receptor in a representative series of meningiomas and to
correlate these findings with age, gender, tumor grade, and recurrence. Tumor tissue
samples of 157 patients diagnosed with meningioma (37 males and 120 females, mean age
53.6±14.3 years) who underwent surgical resection between 2003 and 2012 at our
institution were immunohistochemically evaluated for the presence of p53 protein and
dopamine D2 receptor and were followed-up to analyze tumor recurrence or
regrowth. Tumors were classified as grades I (n=141, 89.8%), II (n=13, 8.3%), or
grade III (n=3, 1.9%). Dopamine D2 receptor and p53 protein expression
were positive in 93.6% and 49.7% of the cases, respectively. Neither of the markers
showed significant expression differences among different tumor grades or recurrence
or regrowth statuses. Our findings highlight the potential role of p53 protein in
meningioma development and/or progression. The high positivity of dopamine
D2 receptor observed in this study warrants further investigation of
the therapeutic potential of dopamine agonists in the evolution of meningiomas.
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Affiliation(s)
- G Trott
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - J F S Pereira-Lima
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C G S Leães
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - N P Ferreira
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - L M Barbosa-Coutinho
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - M C Oliveira
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
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Gonzales PH, Mezzomo LC, Ferreira NP, Roehe AV, Kohek MBF, Oliveira MDC. Aromatase P450 expression in human pituitary adenomas. Neuropathology 2014; 35:16-23. [DOI: 10.1111/neup.12145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 06/18/2014] [Accepted: 06/19/2014] [Indexed: 01/05/2023]
Affiliation(s)
| | - Lisiane Cervieri Mezzomo
- Post-Graduation Program of Pathology; UFCSPA; Porto Alegre RS Brazil
- Laboratory of Molecular Biology; UFCSPA; Porto Alegre RS Brazil
| | - Nelson Pires Ferreira
- Neuroendocrinology Center; Irmandade Santa Casa de Misericórdia de Porto Alegre (ISCMPA); Porto Alegre RS Brazil
| | | | - Maria Beatriz Fonte Kohek
- Post-Graduation Program of Pathology; UFCSPA; Porto Alegre RS Brazil
- Laboratory of Molecular Biology; UFCSPA; Porto Alegre RS Brazil
| | - Miriam da Costa Oliveira
- Post-Graduation Program of Pathology; UFCSPA; Porto Alegre RS Brazil
- Neuroendocrinology Center; Irmandade Santa Casa de Misericórdia de Porto Alegre (ISCMPA); Porto Alegre RS Brazil
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Mendes GA, Pereira-Lima JFS, Kohek MB, Trott G, Di Domenico M, Ferreira NP, Oliveira MDC. Prolactin gene expression in primary central nervous system tumors. J Negat Results Biomed 2013; 12:4. [PMID: 23317095 PMCID: PMC3552985 DOI: 10.1186/1477-5751-12-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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: 03/19/2012] [Accepted: 01/03/2013] [Indexed: 02/06/2023] Open
Abstract
Background Prolactin (PRL) is a hormone synthesized in both the pituitary gland and extrapituitary sites. It has been associated with the occurrence of neoplasms and, more recently, with central nervous system (CNS) neoplasms. The aim of this study was to evaluate prolactin expression in primary central nervous system tumors through quantitative real-time PCR and immunohistochemistry (IH). Results Patient mean age was 49.1 years (SD 15.43), and females accounted for 70% of the sample. The most frequent subtype of histological tumor was meningioma (61.5%), followed by glioblastoma (22.9%). Twenty cases (28.6%) showed prolactin expression by immunohistochemistry, most of them females (18 cases, 90%). Quantitative real-time PCR did not show any prolactin expression. Conclusions Despite the presence of prolactin expression by IH, the lack of its expression by quantitative real-time PCR indicates that its presence in primary tumors in CNS is not a reflex of local production.
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Affiliation(s)
- Graziella Alebrant Mendes
- Postgraduate Program in Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil.
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Mezzomo LC, Gonzales PH, Pesce FG, Kretzmann Filho N, Ferreira NP, Oliveira MC, Kohek MBF. Expression of cell growth negative regulators MEG3 and GADD45γ is lost in most sporadic human pituitary adenomas. Pituitary 2012; 15:420-7. [PMID: 21850407 DOI: 10.1007/s11102-011-0340-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [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: 12/12/2022]
Abstract
We aimed at the evaluation of MEG3 and GADD45γ expression in sporadic functioning and clinically non-functioning human pituitary adenomas, morphologically characterized by immunohistochemistry analysis and their association with clinical features. Thirty eight patients who had undergone hypophysectomy at São José Hospital of Irmandade Santa Casa de Misericórdia in Porto Alegre, Brazil, were included in this study. We evaluated tumor-type specific MEG3 and GADD45γ expression by qRT-PCR in the pituitary adenomas, and its association with clinical features, as age, gender and tumor size, obtained from medical records. The patients consisted of 21 males and 17 females and the mean age was 47 ± 14 (mean ± SD), ranging from 18 to 73 years-old. Of these 14 were clinically non-functioning, 10 GH-secreting, 9 PRL-secreting, and 5 ACTH-secreting pituitary adenomas. All samples were macroadenomas, except four ACTH-secreting tumors, which were microadenomas. In summary, MEG3 and GADD45γ expression was significantly lost in most clinically non-functioning adenomas (78 and 92%, respectively). Other assessed pituitary tumor phenotypes expressed both genes at significantly different levels, and, in some cases, with overexpression. There was no significant association between gene expression and the analyzed clinical features. Our results confirm the previous report, which indicated that MEG3 and GADD45γ expression is lost in the majority of human pituitary tumors, mainly in clinically-nonfunctioning adenomas. Functioning tumors had differences of relative expression levels. The two groups of tumors are probably genetically different and may have a different natural history.
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Affiliation(s)
- Lisiane Cervieri Mezzomo
- Post Graduation Program of Pathology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, CEP 90050-170, Brazil
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Abstract
The aim of this study was to identify factors influencing edentulous patients' preferences for treatment using conventional or implant dentures (ID). A consecutive sample of 112 patients was selected in a university facility. All patients responded to a questionnaire concerning preferences about treatment and factors influencing preferences for conventional complete dentures (CD), implant-retained overdentures (IRO) and fixed implant-supported prostheses (FISP). Subsequently, a set of 21 questions was presented, and patients were requested to rate the importance of various potential reasons influencing their choice of treatment. Preference for CD was more prevalent for maxilla (52·7%) and mandible (41·1%). Fixed implant-supported prostheses and IRO were preferred for the mandible (FISP=37·5%; IRO=21·4%) rather than maxilla (FISP=27·7%; IRO=19·6%). The most preferred treatment option among the subjects when evaluating both arches was the implant-supported fixed or removable prosthesis (FISP/IRO). A preference for combined upper and lower CD was also commonly reported (39·3%). Factor analysis identified six components that accounted for 72·2% of the total variance: (i) psychosocial benefits, (ii) functional performance, (iii) technical and financial concerns, (iv) post-insertion complaints, (v) removability and (vi) longevity. Technical and financial concerns (cost, complexity, surgery risks and duration of treatment) were more relevant for those who preferred ID (P<0·001). With the exception of post-insertion complaints, all mean scores of component factor loadings were positive for ID. Conventional complete dentures are associated with lower expected outcomes by patients, and cost-related issues are the major factors associated with the preferences for implant treatment of edentulous patients.
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Affiliation(s)
- C R Leles
- School of Dentistry, Federal University of Goias, Goiania, Goias School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Affiliation(s)
- Paulo Valdeci Worm
- Hospital São José, Santa Casa de Misericórdia de Porto Alegre, RS, Brazil.
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Dallago CM, Barbosa-Coutinho LM, Ferreira NP, Meurer R, Pereira-Lima JFS, Oliveira MDC. Determination of cell proliferation using Mcm2 antigen and evaluation of apoptosis and TGF-beta1 expression in GH-secreting or clinically nonfunctioning pituitary adenomas. Endocr Pathol 2010; 21:32-9. [PMID: 20174894 DOI: 10.1007/s12022-010-9107-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 11/27/2022]
Abstract
Pituitary adenomas (PA) occasionally show aggressive behavior, with invasion of the surrounding tissues. The identification of markers able to recognize aggressive PA in early stages remains a challenge. We aimed to determine the expression of a new cell proliferation marker, Mcm2, and the presence of apoptosis in PA, and to evaluate the association of clinicopathological features with the apoptotic and proliferative indices. Additionally, the TGF-beta1 expression, an inducer of apoptosis, was determined. The proliferative index was determined in GH-secreting or clinically nonfunctioning PA using immunohistochemical (IH) methods for Mcm2 and Ki-67 antigens. The apoptosis was assessed by the TUNEL method and the TGF-beta1 expression by IH. A significant positive correlation was found between log Mcm2 index and log Ki-67 index (p < 0.001). Mcm2 and Ki-67 detected a similar number of proliferating cells. Mcm2 index showed a significant association with tumor extension (p = 0.02), but not with tumor invasion. Apoptosis was detected in 17% of the adenomas, with a maximum apoptotic index of 0.77%. Immunoreactivity to TGF-beta1 was observed in 77% of the adenomas, showing an association with tumor extension. We concluded that, in this sample, Mcm2 was similar to Ki-67 in the identification of the proliferating cells and that apoptosis was rare.
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Affiliation(s)
- Cristina Micheletto Dallago
- Neuroendocrinology Center, Complexo Hospitalar Santa Casa, Universidade Federal de Ciências da Saúde de Porto Alegre (UFSCPA), Rua Dona Mimi Moro, 40, 90480-050, Porto Alegre, RS, Brazil
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Leães CGS, Meurer RT, Coutinho LB, Ferreira NP, Pereira-Lima JFS, da Costa Oliveira M. Immunohistochemical expression of aromatase and estrogen, androgen and progesterone receptors in normal and neoplastic human meningeal cells. Neuropathology 2010; 30:44-9. [DOI: 10.1111/j.1440-1789.2009.01047.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Rollin G, Ferreira NP, Czepielewski MA. Prospective evaluation of transsphenoidal pituitary surgery in 108 patients with Cushing's disease. ACTA ACUST UNITED AC 2008; 51:1355-61. [PMID: 18209874 DOI: 10.1590/s0004-27302007000800022] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Accepted: 10/10/2007] [Indexed: 11/22/2022]
Abstract
Transsphenoidal pituitary surgery (TSS) remains the treatment of choice for Cushing's disease (CD). Despite the widespread acceptance of this procedure as the first line treatment in CD, the indication of a second TSS in not cured or relapsed DC patients is not consensus. We report the results of TSS in 108 patients with CD (a total of 117 surgeries). The mean postoperative follow-up period was 6 years. Remission was defined as clinical and laboratorial signs of adrenal insufficiency, period of glucocorticoid dependence, serum cortisol suppression on oral 1-mg dexamethasone overnight suppression test and clinical remission of hypercortisolism. We evaluated 103 patients with CD by the time of the first TSS. Fourteen patients underwent second TSS (5 had already been operated in others centers; in 5 patients the first surgery was not curative; in 4 patients CD relapsed). Remission rates were 85.4% and 28.6% (p < 0.001) after first and second TSS, respectively. In microadenomas, remission rates were higher than macroadenomas (94.9% vs. 73.9%; p = 0.006). In patients with negative pituitary imaging remission rates were 71.4% (p = 0.003; vs. microadenomas). Postoperative complications were: transient diabetes insipidus, definitive diabetes insipidus, hypopituitarism, stroke and one death. Only hypopituitarism was more frequent after second TSS (p = 0.015). In conclusion, TSS for CD is an effective and safe treatment. The best remission rates were observed at the first surgery and in microadenomas. The low remission rates after a second TSS suggest that this approach could not be a good therapeutic choice when the first one was not curative.
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Affiliation(s)
- Guilherme Rollin
- Division of Endocrinology, Hospital de Clínicas de Porto Alegre, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS.
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29
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Soares Leães CG, Filho AP, Pereira Lima JFS, Dallago CM, Batista RL, Barbosa-Coutinho LM, Ferreira NP, da Costa Oliveira M. Hyperprolactinemia and immunohistochemical expression of intracellular prolactin and prolactin receptor in primary central nervous system tumors and their relationship with cellular replication. Brain Tumor Pathol 2007; 24:41-6. [PMID: 18095129 DOI: 10.1007/s10014-007-0220-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 05/25/2007] [Accepted: 07/31/2007] [Indexed: 11/26/2022]
Abstract
The role of prolactin (PRL) in the CNS remains uncertain. We evaluated the presence of hyperprolactinemia, intracellular prolactin (ICP), and prolactin receptor (PRL-R) in primary CNS tumors, and their relationship with cellular replication with a prospective cross-sectional study of 82 consecutive patients with primary CNS tumors admitted for neurosurgical resection between October 2003 and September 2005. Patients submitted to a questionnaire, and venous blood samples were obtained for measurement of serum PRL and TSH. Immunohistochemical analyses were performed to evaluate the presence of ICP, PRL-R, and Ki-67. Serum PRL levels ranged from 2 to 70 ng/ml, and hyperprolactinemia was detected in 25 cases (30.5%). ICP was detected in 18 patients (21.9%), in whom PRL ranged from 2 to 32 ng/ml. A positive correlation was found between PRL levels and the presence of ICP (Student's t test, P = 0.022). The PRL-R was observed immunohistochemically in 32 cases (39%). The frequencies of hyperprolactinemia, ICP, and PRL-R were similar across the several histological types of CNS tumors. Ki-67 index was similar in all groups. Hyperprolactinemia and intracellular presence of PRL and PRL-R were common findings in this population, suggesting a role for PRL in CNS tumor genesis.
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Affiliation(s)
- Carolina Garcia Soares Leães
- Department of Pathology of Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, Center of Neuroendocrinology - Complexo Hospitalar Santa Casa of Porto Alegre/RS, Rua Dona Mimi Moro, 40 90480-050, Porto Alegre, RS, Brazil
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Gobbato PL, Pereira Filho ADA, de David G, Faria MDB, de David F, Aleixo PB, Barra MB, Ferreira NP. Primary meningeal Burkitt-type lymphoma presenting as the first clinical manifestation of acquired immunodeficiency syndrome. Arq Neuropsiquiatr 2006; 64:511-5. [PMID: 16917629 DOI: 10.1590/s0004-282x2006000300030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2005] [Accepted: 02/23/2006] [Indexed: 11/22/2022]
Abstract
The purpose of this study is to report a rare case of primary meningeal high grade Burkitt-type lymphoma presenting as the first clinical manifestation of acquired immunodeficiency syndrome. A 38-year-old Caucasian man, with a negative past medical history, sought treatment after experiencing global headache for five days. CT-Scan revealed a right front-temporo-parietal hyperdense subdural expansive mass. A craniotomy was performed and a hard white subdural was microsurgically dissected. Some hours after the surgery, the patient developed hemispheric cerebral edema and intracranial hypertension syndrome. Decompressive craniotomy was performed and the patient had an excellent recovery. Screening blood tests diagnosed human immunodeficiency virus infection. Further investigation ruled out systemic diseases. Eleven days after the initial surgery, the patient developed an acute respiratory failure and sepsis, dying on that day. Pathological studies diagnosed Burkitt-type lymphoma.
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Affiliation(s)
- Pedro Luís Gobbato
- Hospital São José, Complexo Hospitalar Santa Casa de Porto Alegre, Porto Alegre RS, Brazil
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Ferreira MP, Ferreira NP, Pereira Filho ADA, Pereira Filho GDA, Franciscatto AC. Stereotactic computed tomography–guided brain biopsy: diagnostic yield based on a series of 170 patients. ACTA ACUST UNITED AC 2006; 65 Suppl 1:S1:27-1:32. [PMID: 16427444 DOI: 10.1016/j.surneu.2005.11.036] [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] [Received: 10/31/2005] [Accepted: 11/17/2005] [Indexed: 11/21/2022]
Abstract
BACKGROUND Stereotactic CT-guided biopsy is a valuable and safe procedure for diagnosing intracranial lesions. The objectives of this article are to analyze the diagnostic yield in a series of stereotactic CT-guided brain biopsies and to evaluate whether predictive factors may influence diagnostic yield. METHODS The medical records of a series of patients who underwent stereotactic CT-guided brain biopsy from 1993 to 2005 in a neurosurgical center were reviewed. Clinical data were stored and analyzed with Microsoft Access (Microsoft Corp, Seattle, WA) and SPSS V11.0 software (SPSS, Inc, Chicago, IL). The following variables were analyzed: age, sex, anatomopathologic diagnosis, lesion topography and volume, postsurgical complications, and predictive factors that may affect diagnostic yield. RESULTS One hundred seventy patients (102 males, 68 females; average age, 48.5 years) were analyzed. Stereotactic CT-guided biopsies allowed diagnosis in 157 cases (92%). The most frequent anatomopathologic diagnoses were high-grade glioma (n = 45), low-grade glioma (n = 31), nonspecific inflammatory lesions (n = 19), metastasis (n = 10), and lymphoma (n = 10). The most frequent topographies were frontal (n = 42), basal ganglia (n = 40), and parietal (n = 27) and front-parietal lobes (n = 9). Complications occurred in 5 patients (2.9%). Mortality rate was 1.2% (2 patients). Age had a positive impact, whereas female sex negatively affected diagnostic yield. All other predictive factors analyzed were not significant. CONCLUSION Stereotactic CT-guided brain biopsies performed presented acceptable anatomopathologic diagnostic rate. Age had a positive impact, whereas female sex negatively affected diagnostic yield in this series.
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Affiliation(s)
- Marcelo Paglioli Ferreira
- Neurosurgery Department, Hospital São José/Complexo Hospitalar Santa Casa de Porto Alegre, Porto Alegre 90020-060, Brazil
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Ferreira MP, Collares MVM, Ferreira NP, Kraemer JL, Pereira Filho ADA, Pereira Filho GDA. Early surgical treatment of nonsyndromic craniosynostosis. ACTA ACUST UNITED AC 2006; 65 Suppl 1:S1:22-1:26; discussion S1:26. [PMID: 16427442 DOI: 10.1016/j.surneu.2005.11.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 10/31/2005] [Accepted: 11/17/2005] [Indexed: 11/29/2022]
Abstract
BACKGROUND Craniosynostosis, a premature fusion of cranial sutures, can happen as an isolated defect (nonsyndromic) or as part of a syndrome. It may lead to raised intracranial pressure and deformity of both the cranial and facial skeletons. Early surgery is usually the best treatment choice. The aim of this study was to review the experience of a multidisciplinary staff with the surgical treatment of nonsyndromic craniosynostosis. METHODS All the nonsyndromic craniosynostosis cases treated surgically from 1991 to 2005 at 2 neurosurgical centers were reviewed. The variables analyzed were sex, age, weight, type of deformity, estimated volemia, surgical technique, surgical time, blood loss, PO hospitalization time, and complications. All data were stored in a database and analyzed with Microsoft Access (Microsoft Corp, Seattle, WA) and SPSS V11.0 (SPSS, Inc, Chicago, IL). RESULTS The sample consisted of 120 patients (70 males, 50 females). Six patients were excluded because of their atypical timing of treatment (average age, 72 months). The final average age was 7.08 months (variation, 1-18), and the average weight was 7.8 kg. The types of deformities found were scaphocephaly (n = 54, 45%), plagiocephaly (n = 27, 22%), trigonocephaly (n = 19, 16%), brachycephaly (n = 16, 13%), and oxycephaly (n = 4, 3%). The mean surgical time was 186 minutes and the mean PO hospitalization time was 6.8 days. The mortality on this series was 2.6% (3 patients). In the last operated cases, a significant improvement in morbid-mortality was observed. CONCLUSION A multidisciplinary approach, including neurosurgeons, neurologists, and pediatricians, and appropriate training of the clinical surgical staff can minimize the risks and decrease the complications in the treatment of craniosynostosis, leading to a satisfactory outcome.
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Affiliation(s)
- Marcelo Paglioli Ferreira
- Neurosurgery Department, Hospital São José/Complexo Hospitalar Santa Casa de Porto Alegre, Porto Alegre 90020-060, Brazil.
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Abstract
O glioblastoma, um tumor anaplásico de linhagem astrocitária, é o mais freqüente tumor cerebral. Localiza-se preferencialmente nos hemisférios cerebrais; seu crescimento primário no cone medular é muito raro, e o manejo e prognóstico deste tipo de lesão são distintos dos outros tumores observados nesta localização. Apresentamos o caso de um homem de 39 anos com tumor intramedular com diagnóstico histo-patológico de glioblastoma.
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Rollin GAFS, Ferreira NP, Junges M, Gross JL, Czepielewski MA. Dynamics of serum cortisol levels after transsphenoidal surgery in a cohort of patients with Cushing's disease. J Clin Endocrinol Metab 2004; 89:1131-9. [PMID: 15001598 DOI: 10.1210/jc.2003-031170] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.1] [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: 02/05/2023]
Abstract
Transsphenoidal pituitary surgery is the treatment of choice for Cushing's disease (CD). Despite the widespread acceptance of this procedure, there is no agreement regarding the definition of successful treatment. We prospectively studied postoperative serum cortisol dynamics in 41 patients with CD (including a total of 45 surgeries). The mean postoperative follow-up period was 4.8 yr. Remission was defined as clinical and laboratory signs of adrenal insufficiency, glucocorticoid dependence, and serum cortisol suppression on overnight oral 1-mg dexamethasone suppression test. Serum cortisol was measured preoperatively and postoperatively at 6, 12, and 24 h (28 surgeries) and at 10-12 d (45 surgeries). No statistical difference was detected in mean preoperative and 6-h postoperative cortisol levels between surgically induced remission patients [22.1 +/- 7.73 microg/dl (610 +/- 213.3 nmol/liter) and 25.2 +/- 19 microg/dl (695.2 +/- 524.4 nmol/liter)] and surgical failure patients [23.6 +/- 6.95 micro g/dl (651.4 +/- 161.8 nmol/liter) and 37.5 +/- 18.1 microg/dl (1035 +/- 499.6 nmol/liter); P = 0.50 and P = 0.17]. At 12 and 24 h after surgery, the difference was significant (P = 0.009 and P < 0.0001). Mean cortisol levels were 12.44 +/- 13.3 microg/dl (343.3 +/- 367.1 nmol/liter) and 4.72 +/- 6.72 microg/dl (130.3 +/- 185.5 nmol/liter) in the remission group and 26.3 +/- 7.06 microg/dl (725.9 +/- 194.8 nmol/liter) and 23.5 +/- 6.86 microg/dl (648.6 +/- 189.3 nmol/liter) in the failure group (P = 0.009; P < 0.0001). At 10-12 d after the procedure, the difference was also significant (P < 0.0001): cortisol levels were 2.52 +/- 3.32 microg/dl (69.5 +/- 91.6 nmol/liter) in the remission group and 24.9 +/- 13.3 microg/dl (687.2 +/- 367.1 nmol/liter) in the failure group. In conclusion, in the immediate postoperative period of transsphenoidal surgery, remission of CD is not necessarily defined by undetectable serum cortisol. During the first 10-12 d after surgery, cortisol nadir correctly classified the remission [cortisol, 7.0 microg/dl (193.2 nmol/liter) or less] and the failure groups [cortisol, 8.0 microg/dl (220.8 nmol/liter) or more]. Glucocorticoid should be administered only after laboratory and/or clinical evidence of adrenal insufficiency.
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Affiliation(s)
- G A F S Rollin
- Division of Endocrinology, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil CEP 90035-003
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Abstract
Pituitary adenomas sometimes show rapid growth and recurrence, and about one third invade the structures surrounding the sella turcica. In an attempt to determine aggressive behavior at an early stage, we used the MIB-1 antibody to identify the Ki-67 antigen. The present study was designed to evaluate pituitary adenomatous tissue in terms of secretion and proliferation and to correlate the Ki-67 index with hormone phenotype and invasive behavior. Material from 159 patients submitted to one or more resections of pituitary adenomas was evaluated. Forty-two non-secretory adenomas and 43 adenomas immunoreactive for growth hormone, 19 for prolactin, 18 for growth hormone and prolactin, 16 for adrenocorticotropic hormone (ACTH), and 21 cases of plurihormonal/gonadotropin adenomas were detected by immunohistochemistry. The MIB-1 antibody was positive in 139 samples and the Ki-67 index ranged from 0.16 to 15.48% (mean = 1.22 +/- 2.09%), with no significant difference between genders, age groups, or secretory and non-secretory status. The Ki-67 index was higher in ACTH-secreting adenomas. Invasive pituitary adenomas had a significantly higher Ki-67 index (2.01 +/- 3.15%) than macroadenomas with or without supra-sellar extension (1.12 +/- 1.87%; P = 0.02). The index was not significantly different in the subgroup of adenomas with invasion of the cavernous sinus compared to groups with other types of invasion. We conclude that tumoral proliferative activity evaluated by the detection of the Ki-67 antigen is significantly higher in invasive than noninvasive adenomas, information which can be useful in therapeutic postoperative management since index cut-off values associated with aggressive behavior can be established.
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Affiliation(s)
- C B Pizarro
- Departamento de Endocrinologia, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, Rua Dona Mimi Moro 40, 90480-050 Porto Alegre, RS, Brazil
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36
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Abstract
Inactivating mutations of TP53, a tumor suppressor gene, are associated with abnormal cell proliferation. Although p53 expression is common in many human malignancies, p53 protein has seldom been evaluated in pituitary tumors. When detected, the percentage of p53-positive cells is low, and, in general, it is exclusive for invasive lesions. The aim of the present study was to use immunohistochemistry to determine the presence of p53 protein in pituitary adenomas from tumor samples of 163 surgeries performed in 148 patients (40% male, 60% female). In 35% of the cases the adenoma was nonfunctional, while in the others it was associated with PRL, GH and/or ACTH endocrine hypersecretion syndrome. Macroadenomas were observed in 83.2% of the cases with available neuroimage evaluation, of which 28% invaded the cavernous, sphenoid and/or ethmoidal sinus, bone, third ventricle or subfrontal lobe. p53 protein was detected in 2/148 patients (1.3%). Immunohistochemistry was positive for PRL and GH in these cases. Due to the high percentage of invasive pituitary adenomas found in our study, the low frequency of p53 detection suggests that it is inadequate as a routine marker for aggressiveness and as a predictive factor of tumor behavior.
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Affiliation(s)
- M C Oliveira
- Departamento de Endocrinologia, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre e Irmandade Santa Casa de Misericórdia de Porto Alegre, Dona Mimi Moro 40, 90480-050 Porto Alegre, RS, Brazil.
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37
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Abstract
Eighty-nine patients with lower cervical spine fractures or dislocations were evaluated for risk factors of neurological lesion. The age, sex, level and pattern of fracture and sagittal diameter of the spinal canal were analysed. There were no significant differences on the age, gender, level and Torg's ratio between intact patients and those with nerve root injury, incomplete or complete spinal cord injuries. Bilateral facet dislocations and burst fractures are a significant risk factor of spinal cord injury.
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Affiliation(s)
- D G Coelho
- Hospital São José da Irmandade, Santa Casa de Misericórdia de Porto Alegre
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38
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Abstract
Two patients with cerebellopontine angle (CPA) lipoma were studied. They were submitted to surgical treatment. Available literature was reviewed and 29 cases with same lesion were identified which had been treated by surgery. Clinical manifestations, possibility of diagnostic methods, surgical indications and treatment strategies are discussed. Attention is called to the peculiarities of CPA lipomas and the doubtful validity of attempting complete excision in all cases.
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Affiliation(s)
- M P Ferreira
- Instituto de Neurocirurgia de Porto Alegre, RS, Brasil
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39
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Abstract
Prolactinoma is rare in childhood and adolescence. The earliest known diagnosis was reported in a patient at 8 years of age. We report the case of a sellar tumor found in a 6 years old girl. After a long symptomatic period she was brought for treatment. At this time she had partial papillar atrophy, hyperprolactinemia, and diminished reserve of growth hormone and cortisol. Due to rapid visual deterioration, she was submitted to a frontotemporal craniotomy for suspected craniopharyngioma. The tumor tissue immunohistochemistry was positive for prolactin. It is concluded that prolactinoma must be considered in differential diagnosis of sellar tumors in childhood since it benefits from a less aggressive therapy.
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Affiliation(s)
- M da C Oliveira
- Disciplina de Endocrinologia da Fundação Faculdade Federal de Ciências Médicas de Porto Alegre (FFFCLMPA), Brasil
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40
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Kraemmer JL, Bastos CA, Brasil AV, Paglioli Neto E, Ferreira NP. [Spontaneous intraparenchymatous hematomas. Experience with 134 cases]. Arq Neuropsiquiatr 1992; 50:10-5. [PMID: 1307466 DOI: 10.1590/s0004-282x1992000100003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
One hundred thirty four cases of spontaneous intraparenchymatous hematomas have been studied. They were separated into six groups according to criteria related to topography, level of consciousness, and hematoma volume. Treatment protocols--conservative, conservative with I.C.P. monitoring, and surgical--were different in each group. Results have shown an increased mortality (p < 0.05) among patients whose level of consciousness were more severely compromised, in those older than 50 years old, and in those harbouring quadrilateral, intraventricular or brainstem hematomas. Overall mortality was 26.1%.
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Affiliation(s)
- J L Kraemmer
- Instituto de Neurocirurgia de Porto Alegre, Brasil
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41
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Abstract
A case of a cavernous angioma of the optic nerve is presented. The abrupt onset of monocular visual symptoms was accompanied by an intense bitemporal headache, indicating apoplexy of the optic nerve. The surgical and histological findings demonstrated a cystic cavernous angioma. The lesion was removed completely without any noticeable bleeding. The preoperative visual deficit persisted.
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42
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Barbosa-Coutinho LM, Lima EL, Gadret RO, Ferreira NP. [Massive intratumor hemorrhage in tuberous sclerosis. Autopsy study of a case]. Arq Neuropsiquiatr 1991; 49:465-70. [PMID: 1842197 DOI: 10.1590/s0004-282x1991000400018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A case of a 13-year-old boy with tuberous sclerosis manifested with the complete syndrome that died with a massive intratumoral hemorrhage is presented. The post mortem examination of the brain disclosed a massive left parenchymatous brain hemorrhage with intraventricular component. In the hemorrhage, near the lateral ventricle wall, a subependymal giant cell astrocytoma was found. This is the second case in the literature of tuberous sclerosis which cause of death was an intratumoral massive hemorrhage.
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Affiliation(s)
- L M Barbosa-Coutinho
- Departamento de Patologia (DP), Fundação Faculdade Federal de Ciéncias Médicas de Porto Alegre (FFFCMPA), Brasil
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43
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Kraemer JL, Schneider FL, Raupp SF, Ferreira NP. Anatomoradiological correlation of the intersection of the carotid siphon with the dura mater. Neuroradiology 1989; 31:408-12. [PMID: 2594184 DOI: 10.1007/bf00343865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In order to obtain frames of reference to determine the place of intersection of the carotid siphon with the dura mater in conventional arteriograms, a debated topic lacking general agreement in the literature, 34 cadaveric sphenoids were prepared with the injection of radiopaque medium in both internal carotid arteries. After having marked the dura mater with steel wire, the pieces were radiographed in lateral view. The points of intersection of the clinoclinoid line and the sphenoidal line with the internal carotid artery as well as the emergence of the ophthalmic artery and its posterior projection were marked on the radiographs obtained. The distances between the various points were measured and submitted to statistical treatment. The results showed multiple regressions with a strong correlation coefficient in two equations. A table was built in which, knowing the distances between the points of the clinoclinoid and the sphenoidal plane lines and those of the ophthalmic artery and its projection, the position of the dura mater which covers the cavernous sinus may be estimated in arteriograms.
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Affiliation(s)
- J L Kraemer
- Institut of Neurosurgery, Porto Alegre, Brazil
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44
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Barbosa-Coutinho LM, Antunes AC, Azambuja NA, Geyer GR, Gross JL, Ferreira NP, Lopes NM, Reichel CL, Zettler CG. [Pituitary adenomas: immunohistochemical study of 167 cases]. Arq Neuropsiquiatr 1989; 47:308-12. [PMID: 2619609 DOI: 10.1590/s0004-282x1989000300010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
Abstract
One hundred and sixty seven cases of pituitary adenoma were analysed using the immunocytochemical method of the Avidin-Biotin Complex (ABC), described by Hsu et al. (1981). Six pituitary anti-hormones were utilized: anti-prolactin (aPRL) at a 1:1,500 dilution; anti-growth hormone (aHGH) at a 1:4,000 dilution: anti-adrenocorticotrophic hormone (aACTH) at a 1:3,000 dilution; anti-thyrothrophic hormone (aTSH) at a 1:3,000 dilution; anti-luteinizing hormone (aLH) at a 1:1,000 dilution; and a anti-follicle-stimulating hormone (aFSH) at a 1:300 dilution. Incubation period was 14 to 16 hours at 4 degrees C. The survey of clinical, laboratory and radiological data of cases of pituitary adenomas was performed after reading the stained slides using the immunocytochemical method. Of the 167 cases of pituitary adenomas, 136 (81.4%) disclosed a positive immunoreaction to one or more anti-hormones, and the positivity index of neoplastic cells varied from 1 to 90%. The immunoreaction was positive exclusively to one anti-hormone in 80 cases (58.8%) and to two or more anti-hormones in 56 cases, and the association most frequently found was between both aPRL and aHGH. The positivity to the immunoreaction was distributed as follows: -100 cases were positive for aPRL, exclusively in 4 cases; -65 cases were positive for aHGH, exclusively in 22 cases; -31 cases were positive for aACTH, exclusively in 8 cases; -5 cases were positive for aTSH, exclusively in one case; -one patient presented an adenoma positive to aLH and another patient to aFSH.
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Affiliation(s)
- L M Barbosa-Coutinho
- Departamento de Patologia da Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, Brasil
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45
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van der Walt JP, Yamada Y, Ferreira NP, Richards PD. New basidiomycetous yeasts from southern Africa. IV. Sporobolomyces phylladus sp. nov., characterized by the coenzyme Q9 system (Sporobolomycetaceae). Antonie Van Leeuwenhoek 1989; 55:189-95. [PMID: 2742374 DOI: 10.1007/bf00404758] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [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: 01/02/2023]
Abstract
Six strains of an undescribed, leaf-borne species of the genus Sporobolomyces were recovered. A description of the new species, Sporobolomyces phylladus, is given.
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Affiliation(s)
- J P van der Walt
- Division of Food Science & Technology, Council for Scientific & Industrial Research, Pretoria, South Africa
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46
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van der Walt JP, Yamada Y, Ferreira NP, Richards PD. New basidiomycetous yeasts from southern Africa. III. Sporobolomyces phyllomatis sp. nov. (Sporobolomycetaceae). Antonie Van Leeuwenhoek 1988; 54:201-6. [PMID: 3421666 DOI: 10.1007/bf00443578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Three strains of an undescribed, leaf-borne species of the genus Sporobolomyces were recovered. A description of the new species, Sporobolomyces phyllomatis, is given.
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Affiliation(s)
- J P van der Walt
- Division of Food Science & Technology, Council for Scientific and Industrial Research, Pretoria, South Africa
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47
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Van der Walt JP, Yamada Y, Ferreira NP, Richards PD. New basidiomycetous yeasts from southern Africa. II. Sterigmatomyces wingfieldii sp.n. Antonie Van Leeuwenhoek 1987; 53:137-42. [PMID: 3662485 DOI: 10.1007/bf00393841] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [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: 01/06/2023]
Abstract
A new, insect-associated species of the emended genus Sterigmatomyces, St. wingfieldii, is described. A key to the emended genus is given.
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Affiliation(s)
- J P Van der Walt
- Microbiology Research Group, Council for Scientific and Industrial Research, Pretoria, South Africa
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48
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Abstract
Six strains of an undescribed Candida species which ferment D-xylose tardily, were isolated from soil. A description of the new species, Candida lyxosophila, is given.
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Affiliation(s)
- J P van der Walt
- Microbiology Research Group, Council for Scientific and Industrial Research, Pretoria, South Africa
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49
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Ferreira NP. [NO TITLE AVAILABLE]. Arq Neuro-Psiquiatr 1986. [DOI: 10.1590/s0004-282x1986000400014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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50
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van der Walt JP, Ferreira NP, Richards PD. New basidiomycetous yeasts from Southern Africa. I: Sporobolomyces kluyveri-nielii sp. nov. Antonie Van Leeuwenhoek 1986; 52:431-6. [PMID: 3789706 DOI: 10.1007/bf00393470] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A strain of an undescribed, leaf-borne species of the genus Sporobolomyces was recovered. A description of the new species, Sporobolomyces kluyveri-nielii, is given.
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