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Amezaga-Fernandez I, Aguirre-Urizar JM, Suárez-Peñaranda JM, Chamorro-Petronacci C, Lafuente-Ibáñez de Mendoza I, Marichalar-Mendia X, Blanco-Carrión A, Antúnez-López J, García-García A. Epidemiological, clinical, and prognostic analysis of oral squamous cell carcinoma diagnosed and treated in a single hospital in Galicia (Spain): a retrospective study with 5-year follow-up. Med Oral Patol Oral Cir Bucal 2024; 29:e36-e43. [PMID: 37330964 PMCID: PMC10765332 DOI: 10.4317/medoral.26047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/15/2023] [Indexed: 06/20/2023] Open
Abstract
BACKGROUND Oral cancer is a common neoplasm worldwide, mostly corresponding to squamous cell carcinoma (OSCC). Unfortunately, its overall prognosis remains poor, with no improvement in recent decades. In this study, we have analysed the epidemiological, clinical, and prognostic characteristics of OSCC on patients of a specific Spanish region (Galicia), in order to improve its prognosis and apply effective preventive and early diagnosis measures. MATERIAL AND METHODS We retrospectively analysed 243 cases of OSCC, diagnosed and treated in a single hospital centre in Galicia between 2010 and 2015 (minimum of 5 years of evolution). Overall and specific survival were calculated (Kaplan-Meier) and associated variables were identified (log rank test and Cox regression). RESULTS The mean age of the patients was 67 years, with the majority being male (69.5%), smokers (45.9%) and alcohol consumers (58.6%), who lived in non-urban areas (79.4%). Cases diagnosed at advanced stages entailed the 48.1% of the sample, and 38.7% of cases relapsed. The 5-year overall and disease-specific survival rates were 39.9% and 46.1%, respectively. Patients who consumed tobacco and alcohol had a worse prognosis. OSCC cases referred to hospital by specialist dentists had a better prognosis, as those who were previously diagnosed with an oral potentially malignant oral disorder (OPMD) or received dental care during OSCC treatment. CONCLUSIONS In view of these findings, we conclude that OSCC in Galicia (Spain) still has a very poor overall prognosis, which is mainly related to the advanced age of the patients and the late diagnosis. Our study highlights the better survival of OSCC in relation to the referring health professional, the presence of a previous OPMD and the dental care after diagnosis. This demonstrates the importance of dentistry as a health profession involved in the early diagnosis and multidisciplinary management of this malignant neoplasm.
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Affiliation(s)
- I Amezaga-Fernandez
- Department of Stomatology II University of the Basque Country (UPV/EHU) Barrio Sarriena s/n, 48940, Leioa, Spain
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2
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Pérez-Feal P, Moreiras-Arias N, Buján-Bonino C, Suárez-Peñaranda JM, Fernández-Redondo V. Disseminated lymphangiomas as a cutaneous manifestation of Noonan syndrome. Clin Exp Dermatol 2021; 47:180-182. [PMID: 34363648 DOI: 10.1111/ced.14873] [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] [Received: 08/01/2021] [Accepted: 08/05/2021] [Indexed: 12/01/2022]
Abstract
Lymphangioma is a known, but rare manifestation of Noonan syndrome. We present the case of disseminated and circumscribed cutaneous lymphangiomas in the context of Noonan syndrome. Oral rapamycin is a promising treatment in these extensive and morbidity-causing cases.
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Affiliation(s)
- P Pérez-Feal
- Departments of Dermatology, Clinical University, Hospital of Santiago de Compostela, A Coruña, Spain
| | - N Moreiras-Arias
- Departments of Dermatology, Clinical University, Hospital of Santiago de Compostela, A Coruña, Spain
| | - C Buján-Bonino
- Departments of Dermatology, Clinical University, Hospital of Santiago de Compostela, A Coruña, Spain
| | - J M Suárez-Peñaranda
- Departments of Pathology, Clinical University, Hospital of Santiago de Compostela, A Coruña, Spain
| | - V Fernández-Redondo
- Departments of Dermatology, Clinical University, Hospital of Santiago de Compostela, A Coruña, Spain
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3
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Lázare H, Peteiro A, Pérez Sayáns M, Gándara-Vila P, Caneiro J, García-García A, Antón I, Gándara-Rey JM, Suárez-Peñaranda JM. Clinicopathological features of peripheral ossifying fibroma in a series of 41 patients. Br J Oral Maxillofac Surg 2019; 57:1081-1085. [PMID: 31601435 DOI: 10.1016/j.bjoms.2019.09.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 09/19/2019] [Indexed: 11/24/2022]
Abstract
Peripheral ossifying fibromas are benign mesenchymal lesions that usually arise in the anterior maxilla of young female patients. Histologically they consist of spindle cell proliferation with focal mineralisation. We reviewed 48 specimens from 41 patients and recorded the clinical data, sex, and age of the patients, site and size of the lesions, treatment, and postoperative outcome. Histologically the presence of mature, woven bone, cementum, and calcifications were evaluated and evaluated immunohistochemically. Lesions were more frequent in female patients in the third and fourth decade, and were usually in the lower maxilla and smaller than 2cm. All lesions were conservatively excised, and they relapsed in eight patients. Histopathologically, the lesions were poorly circumscribed, moderately cellular proliferations, with no discernible architectural pattern. All tumours showed some degree of mineralisation, the presence of immature bone being the most common. Immunohistochemical examination showed staining of tumoural cells for smooth muscle actin and CD68. Lesions tended to occur more commonly in female patients, but one decade later than usually reported. We found a higher recurrence rate in lesions that contained cementum-like material but without bone formation, suggesting a lack of maturation in this group. Immunohistochemical results were consistent with myofibroblastic differentiation but they added no information about the behaviour of the lesions.
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Affiliation(s)
- H Lázare
- Department of Pathology, Clinical University Hospital, Santiago de Compostela, Spain
| | - A Peteiro
- Department of Pathology, Hospital POVISA, Vigo, Spain
| | - M Pérez Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit. Faculty of Medicine and Dentistry University of Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), Santiago de Compostela, Spain
| | - P Gándara-Vila
- Oral Medicine, Oral Surgery and Implantology Unit. Faculty of Medicine and Dentistry University of Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), Santiago de Compostela, Spain
| | - J Caneiro
- Department of Pathology, Clinical University Hospital, Santiago de Compostela, Spain
| | - A García-García
- Department of Pathology, Clinical University Hospital, Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), Santiago de Compostela, Spain
| | - I Antón
- Department of Pathology, Hospital POVISA, Vigo, Spain
| | - J M Gándara-Rey
- Oral Medicine, Oral Surgery and Implantology Unit. Faculty of Medicine and Dentistry University of Santiago de Compostela, Spain
| | - J M Suárez-Peñaranda
- Department of Pathology, Clinical University Hospital, Santiago de Compostela, Spain; Department of Pathology and Forensic Sciences, University of Santiago de Compostela, Spain; Instituto de Investigación Sanitaria de Santiago (IDIS), Santiago de Compostela, Spain.
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4
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Boñar-Alvarez P, Pérez Sayáns M, Garcia-Garcia A, Chamorro-Petronacci C, Gándara-Vila P, Luces-González R, Otero Rey E, Blanco-Carrión A, Suárez-Peñaranda JM. Correlation between clinical and pathological features of oral lichen planus: A retrospective observational study. Medicine (Baltimore) 2019; 98:e14614. [PMID: 30813189 PMCID: PMC6408116 DOI: 10.1097/md.0000000000014614] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Oral lichen planus (OLP) is a common, chronic, inflammatory disease of autoimmune origin. The aim of this study is to determine the correlation of the histopathological features with clinical aspects and variants of OLP.We have retrospectively studied a group of 59 adult patients with confirmed clinical and histopathological diagnosis of OLP from the Oral Pathology Unit of the University of Santiago de Compostela (Spain). Clinical parameters: age, gender, location of the lesions, clinical type, toxic habits, and concomitant treatments were evaluated. Histopathologically, the epithelial response (hyperplasia vs atrophy), presence of ulceration, degree of interface lesion and distribution, intensity, and composition of the inflammatory infiltrate were analyzed.Patients treated with several systemic drugs had more atrophic/erosive forms of OLP (P = .019). Plasma cells were found more commonly in cases showing deep inflammatory involvement of the connective subepithelial tissue than in those where inflammation was only superficially located (P <.001). Their presence was also associated with epithelial erosion-ulceration (P <.01).In conclusion, patients treated with several drugs had more atrophic/erosive forms of OLP and frequently associated with a deep specific inflammatory pattern based on plasma cells. Our results could suggest that drug intake by some patients might confer a supplementary aggravating character to the disease, alone or in conjunction with other non-identified factors. More studies should be carried out to confirm this trend and to assess whether this characteristic, can actually influence the evolution of the lesions.
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Affiliation(s)
- Paula Boñar-Alvarez
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Santiago de Compostela
| | - Mario Pérez Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Instituto de Investigación Sanitaria de Santiago (IDIS)
| | - Abel Garcia-Garcia
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Instituto de Investigación Sanitaria de Santiago (IDIS)
| | - Cintia Chamorro-Petronacci
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Instituto de Investigación Sanitaria de Santiago (IDIS)
| | - Pilar Gándara-Vila
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Santiago de Compostela
| | - Romina Luces-González
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Santiago de Compostela
| | - Eva Otero Rey
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Santiago de Compostela
| | - Andres Blanco-Carrión
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Santiago de Compostela
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Sainz-Gaspar L, Suárez-Peñaranda JM, Pousa-Martínez M, Vázquez-Veiga H, Fernández-Redondo V. Topical timolol for treatment of penile Kaposi sarcoma in HIV-negative patient. Dermatol Ther 2017; 30. [PMID: 28677301 DOI: 10.1111/dth.12519] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/29/2017] [Accepted: 06/06/2017] [Indexed: 11/28/2022]
Affiliation(s)
- L Sainz-Gaspar
- Dermatology Department, University Hospital Complex of Santiago de Compostela, A Coruña, Spain
| | - J M Suárez-Peñaranda
- Pathology Department, University Hospital Complex of Santiago de Compostela, A Coruña, Spain
| | - M Pousa-Martínez
- Dermatology Department, University Hospital Complex of Santiago de Compostela, A Coruña, Spain
| | - H Vázquez-Veiga
- Dermatology Department, University Hospital Complex of Santiago de Compostela, A Coruña, Spain
| | - V Fernández-Redondo
- Dermatology Department, University Hospital Complex of Santiago de Compostela, A Coruña, Spain
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Muñoz JI, Costas E, Rodríguez-Calvo MS, Suárez-Peñaranda JM, López-Rivadulla M, Concheiro L. A high-performance liquid chromatography method for hypoxanthine determination in vitreous humour: application to estimation of post mortem interval. Hum Exp Toxicol 2016; 25:279-81. [PMID: 16758771 DOI: 10.1191/0960327106ht615oa] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have developed a new technique to determine the concentration of hypoxanthine [Hx] in a reverse phase column using a modified high-performance liquid chromatography (HPLC) method that is faster and more reliable than those previously described. In this paper we present a formula for estimating the post mortem interval (PMI) based on this HPLC method by applying the inverse prediction method. The regression line obtained by changing the variables gives PMI=0.183[Hx]+0.599 (PMI in hours, [Hx] in μmol/L, R2-0.531, P-0.05).
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Affiliation(s)
- J I Muñoz
- Department of Pathology and Forensic Sciences, University of Santiago de Compostela, Spain
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7
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Simões-Sousa S, Granja S, Pinheiro C, Fernandes D, Longatto-Filho A, Laus AC, Alves CDC, Suárez-Peñaranda JM, Pérez-Sayáns M, Lopes Carvalho A, Schmitt FC, García-García A, Baltazar F. Prognostic significance of monocarboxylate transporter expression in oral cavity tumors. Cell Cycle 2016; 15:1865-73. [PMID: 27232157 DOI: 10.1080/15384101.2016.1188239] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Head and neck squamous cell carcinoma (HNSCC) is the sixth most common type of cancer. The majority of patients present advanced stage disease and has poor survival. Therefore, it is imperative to search for new biomarkers and new alternative and effective treatment options. Most cancer cells rely on aerobic glycolysis to generate energy and metabolic intermediates. This phenotype is a hallmark of cancer, characterized by an increase in glucose consumption and production of high amounts of lactate. Consequently, cancer cells need to up-regulate many proteins and enzymes related with the glycolytic metabolism. Thus, the aim of this study was to characterize metabolic phenotype of oral cavity cancers (OCC) by assessing the expression pattern of monocarboxylate transporters (MCTs) 1, 2 and 4 and other proteins related with the glycolytic phenotype. MATERIAL AND METHODS We evaluated the immunohistochemical expression of MCT1, MCT4, CD147, GLUT1 and CAIX in 135 human samples of OCC and investigated the correlation with clinicopathological parameters and the possible association with prognosis. RESULTS We observed that all proteins analyzed presented significantly higher plasma membrane expression in neoplastic compared to non-neoplastic samples. MCT4 was significantly associated with T-stage and advanced tumoral stage, while CD147 was significantly correlated with histologic differentiation. Interestingly, tumors expressing both MCT1 and MCT4 but negative for MCT2 were associated with shorter overall survival. CONCLUSION Overexpression of MCT1/4, CD147, GLUT1 and CAIX, supports previous findings of metabolic reprograming in OCC, warranting future studies to explore the hyper-glycolytic phenotype of these tumors. Importantly, MCT expression revealed to have a prognostic value in OCC survival.
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Affiliation(s)
- Susana Simões-Sousa
- a Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho , Braga , Portugal.,b ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
| | - Sara Granja
- a Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho , Braga , Portugal.,b ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
| | - Céline Pinheiro
- a Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho , Braga , Portugal.,b ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal.,c Barretos School of Health Sciences Dr. Paulo Prata - FACISB , Barretos , Sao Paulo , Brazil.,d Molecular Oncology Research Center, Barretos Cancer Hospital , Barretos , Sao Paulo , Brazil
| | - Daniela Fernandes
- a Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho , Braga , Portugal.,b ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
| | - Adhemar Longatto-Filho
- a Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho , Braga , Portugal.,b ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal.,d Molecular Oncology Research Center, Barretos Cancer Hospital , Barretos , Sao Paulo , Brazil.,e Laboratory of Medical Investigation (LIM-14), Faculdade de Medicina da Universidade de , São Paulo , Brazil
| | - Ana Carolina Laus
- d Molecular Oncology Research Center, Barretos Cancer Hospital , Barretos , Sao Paulo , Brazil
| | | | - J M Suárez-Peñaranda
- g Department of Pathology and Forensic Sciences , University Hospital and School of Medicine of Santiago de Compostela, Santiago de Compostela , A Coruña , Spain
| | - Mario Pérez-Sayáns
- h Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Health Research Institute of Santiago (IDIS), Santiago de Compostela , A Coruña , Spain
| | - Andre Lopes Carvalho
- d Molecular Oncology Research Center, Barretos Cancer Hospital , Barretos , Sao Paulo , Brazil.,f Head and Neck Surgery Department , Barretos Cancer Hospital , Barretos , Sao Paulo , Brazil
| | - Fernando C Schmitt
- i IPATIMUP - Institute of Molecular Pathology and Immunology of University of Porto , Porto , Portugal.,j Medical Faculty of the University of Porto , Porto , Portugal.,k Department of Pathology and Medicine , Laboratoire National de Sante , Dudelange , Luxembourg
| | - Abel García-García
- h Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Health Research Institute of Santiago (IDIS), Santiago de Compostela , A Coruña , Spain
| | - Fatima Baltazar
- a Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho , Braga , Portugal.,b ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
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8
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Vilas-Sueiro A, Rosón E, Suárez-Peñaranda JM, Vázquez-Osorio I, Sánchez-Aguilar D, Vázquez-Veiga H. Malignant melanoma in a patient with mal de Meleda. Clin Exp Dermatol 2016; 41:437-9. [PMID: 26801819 DOI: 10.1111/ced.12791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Indexed: 11/29/2022]
Affiliation(s)
- A Vilas-Sueiro
- Department of Dermatology, Complejo Hospitalario Universitario Ferrol, A Coruña, 15405, Spain.
| | - E Rosón
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - J-M Suárez-Peñaranda
- Department of Pathology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - I Vázquez-Osorio
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - D Sánchez-Aguilar
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
| | - H Vázquez-Veiga
- Department of Dermatology, Complejo Hospitalario Universitario Santiago, Avenida da residencia s/n. Hospital Naval, Ferrol, A Coruña, 15405, Spain
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9
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Pérez-Sayáns M, Suárez-Peñaranda JM, Aguirre-Urízar JM, Rodríguez-Tojo MJ, Barros-Angueira F, Gallas-Torreira M, García-García A. The use of tissue microarrays for semiquantitative evaluation of ATPaseC1 expression is ineffective. Biotech Histochem 2015; 90:439-44. [PMID: 25901422 DOI: 10.3109/10520295.2015.1023357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We described earlier the possible role of ATPaseC1 expression as a diagnostic and prognostic marker for oral cancer; others have reported its use for tumors of the lung and breast. We assessed ATPaseC1 expression in a sample of oral squamous cell carcinoma (OSCC) using tissue microarrays (TMAs) to analyze the relation between ATPaseC1 expression and clinical, histopathological and prognostic parameters. We performed a retrospective study of 48 cases of OSCC. We constructed TMAs using two different regions of each tumor. V-ATPaseC1 immunohistochemistry was performed and assessed semiquantitatively. ATPaseC1 staining was observed in most of the neoplastic cells in all tumors. Staining was diffusely cytoplasmic and, to a lesser extent, nuclear. The degree of concordance between the measurements performed in tissue microarray 1 (TMA1) and tissue microarray 2 (TMA2), as evaluated using the intra-class correlation coefficient (ICC), was low. We found great variability in the immunohistochemical staining of the different regions of each tumor. We found 16 cases with mild expression (33.3%), 20 with moderate expression (41.7%) and 12 with intense expression (25%). Differences in the clinical-pathological variables studied were not statistically significant. The difficulty of immunohistochemical evaluation, the heterogeneity of the carcinomas and the fact that evaluation of expression requires semiquantitative analysis render the reliability of the results obtained from TMA-based techniques questionable.
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Affiliation(s)
- M Pérez-Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Institute of Sanitary Research of Santiago (IDIS) , Santiago de Compostela , Spain
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10
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Pérez-Sayáns M, Suárez-Peñaranda JM, Torres-López M, Supuran CT, Gándara-Vila P, Gayoso-Diz P, Barros-Angueira F, Gallas-Torreira M, García-García A. The use of CA-IX as a diagnostic method for oral leukoplakia. Biotech Histochem 2014; 90:124-31. [PMID: 25297562 DOI: 10.3109/10520295.2014.965276] [Citation(s) in RCA: 7] [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] [Indexed: 12/12/2022] Open
Abstract
The presence and degree of dysplasia are important diagnostic and prognostic criteria for oral leukoplakia, but evaluation of dysplasia is difficult and subjective. Carbonic anhydrase-IX (CA-IX) is expressed primarily in tumor cells and is considered a specific hypoxia marker. We investigated the role of CA-IX in oral leukoplakia. We investigated 30 specimens of oral leukoplakia and 35 dysplasia specimens adjacent to the tumor margin. We analyzed clinical variables including age, sex, degree of dysplasia, and smoking, clinical appearance of leukoplakia, number of lesions, location, size, clinical monitoring, malignant transformation and recurrence. For the immunohistochemical study, we used a noncommercial monoclonal antibody against human CA-IX MAb M75. We found greater CA-IX positivity in nonsmokers, erythroplakia and mottled leukoplakia, those located on the tongue, patients with multiple lesions, 2-4 cm leukoplakias and in recurrent cases, although differences were not statistically significant. All lesions in all samples without dysplasia were negative for CA-IX; however, for all other categories of dysplasia, the percentages of positivity and negativity varied. Regarding the diagnostic index values, we found a sensitivity of 32%, specificity of 100%, a positive predictive value of 100% and a negative predictive value of 13%. Leukoplakias appear mainly in females and potentially are malignant; more than 90% have some degree of dysplasia, and therefore require close clinical and histopathological monitoring. The CA-IX immunohistochemical marker may be useful for screening samples without dysplasia owing to its high specificity.
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Affiliation(s)
- M Pérez-Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit, Faculty of Medicine and Dentistry, Institute of Sanitary Research of Santiago , Entrerrios s/n, Santiago de Compostela C.P. 15782 , Spain
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Pérez-Sayáns M, Suárez-Peñaranda JM, Torres-López M, Supuran CT, Gándara-Vila P, Gayoso-Diz P, Barros-Angueira F, Blanco-Carrión A, Gándara-Rey JM, García-García A. Expression of CA IX in dysplasia adjacent to surgical resection margins of oral squamous cell carcinoma. Biotech Histochem 2013; 89:91-7. [DOI: 10.3109/10520295.2013.818166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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12
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Pérez-Sayáns M, Suárez-Peñaranda JM, Barros-Angueira F, Diz PG, Gándara-Rey JM, García-García A. An update in the structure, function, and regulation of V-ATPases: the role of the C subunit. BRAZ J BIOL 2012; 72:189-98. [PMID: 22437401 DOI: 10.1590/s1519-69842012000100023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 02/23/2011] [Indexed: 11/22/2022] Open
Abstract
Vacuolar ATPases (V-ATPases) are present in specialized proton secretory cells in which they pump protons across the membranes of various intracellular organelles and across the plasma membrane. The proton transport mechanism is electrogenic and establishes an acidic pH and a positive transmembrane potential in these intracellular and extracellular compartments. V-ATPases have been found to be practically identical in terms of the composition of their subunits in all eukaryotic cells. They have two distinct structures: a peripheral catalytic sector (V1) and a hydrophobic membrane sector (V0) responsible for driving protons. V-ATPase activity is regulated by three different mechanisms, which control pump density, association/dissociation of the V1 and V0 domains, and secretory activity. The C subunit is a 40-kDa protein located in the V1 domain of V-ATPase. The protein is encoded by the ATP6V1C gene and is located at position 22 of the long arm of chromosome 8 (8q22.3). The C subunit has very important functions in terms of controlling the regulation of the reversible dissociation of V-ATPases.
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Affiliation(s)
- M Pérez-Sayáns
- Faculty of Medicine and Dentistry, Santiago de Compostela, Spain
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13
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Moar-Antelo AR, Pérez-Sayáns M, Suárez-Peñaranda JM, Gayoso-Diz P, Barros-Angueira F, Gándara-Rey JM, García-García A. BCL10 expression is unrelated to clinico-pathological parameters or prognoses for oral squamous cell carcinomas. Biotech Histochem 2012; 87:423-7. [DOI: 10.3109/10520295.2012.695025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Suárez-Peñaranda JM, Muñoz JI, Rodríguez-Calvo MS, Ortíz-Rey JA, Concheiro L. The Pathology of the heart conduction system in congenital heart block. ACTA ACUST UNITED AC 2006; 13:341-3. [PMID: 17029919 DOI: 10.1016/j.jcfm.2006.06.010] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The incidence of congenital complete heart block is estimated in 1 of 2500-20,000 births. Many cases are isolated (found in an otherwise normal heart) and the pathology of the heart conduction system is variable. We report a 51-year-old man with the diagnosis of complete heart block, with a permanent pacemaker. No family history of rhythm disturbances was available. The patient presented and endocarditis after replacement of the pacemaker battery. The prognosis was poor and the patient died three months later. Autopsy examination showed signs of shock, of septic origin. The heart was hypertrophic (450g) and the left ventricle thickened. Histopathological examination of the heart conduction system showed that the sinus and atrioventricular nodes were normal, but the His bundle was interrupted and replaced by fibrous tissue. No inflammatory signs were present. Loss of conducting fibres and their replacement by fibrous tissue is the most common pathological process in complete heart block. In this case His bundle was mostly affected, different to Lev's disease where the process is more distal (branching atrioventricular bundle) and to Lenegre's disease, which shows a diffuse damage in the conducting system.
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Affiliation(s)
- J M Suárez-Peñaranda
- Department of Pathology and Forensic Sciences, University of Santiago de Compostela, Hospital Clínico, Travesía de Choupana s/n, 15702 Santiago de Compostela, Spain.
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Vieites B, Suárez-Peñaranda JM, Pérez Del Molino ML, Vázquez-Veiga H, Pardo F, Del Rio E, Sánchez-Aguilar D, Forteza J. Recovery of Mycobacterium tuberculosis DNA in biopsies of erythema induratum-results in a series of patients using an improved polymerase chain reaction technique. Br J Dermatol 2005; 152:1394-6. [PMID: 15949033 DOI: 10.1111/j.1365-2133.2005.06650.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Abstract
We report 3 unusual cases of liver cell adenomas with some uncommon features, corresponding to 3 women aged 45, 37, and 41 years, respectively. The diagnosis was incidental in 2 cases, and the third presented with abdominal pain. Radiologic findings were consistent with liver-cell adenoma, but gross examination failed to reveal the lesion until 24 hours of formalin fixation in 2 cases. Histopathological examination showed a striking deposition of iron pigment. In fact, Pearl's stain was the best way to visualize the limits of the neoplasm, which were irregular (pseudo-infiltrative). There was no evidence of other architectural or cytologic features suggesting an alternative diagnosis, particularly liver-cell carcinoma. Follow-up ranged from 9 months to 6 years and all patients are free of disease.
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Affiliation(s)
- I Abdulkader
- Department of Pathology, Complexo Hospitalario Universitario de Santiago de Compostela, Spain
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17
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Pato-Pato A, Cimas-Hernando I, Lorenzo-González JR, Lema M, Suárez-Peñaranda JM, Castiñeiras-Mourenza JA. [Cerebellar glioblastoma multiforme: a case report]. Rev Neurol 2004; 38:839-42. [PMID: 15152353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
INTRODUCTION Cerebellar glioblastoma multiforme (CGM) accounts for less than 1% of all intracranial glioblastomas; it spreads quickly locally, above all towards the brain stem and adjacent leptomeninges, and has a poor prognosis. CASE REPORT We report the case of a 55 year old patient who presented a continuous feeling of dizziness, instability and sickness, with occasionally vomiting and double vision that had started two months before being admitted to hospital. A physical exploration revealed hypaesthesia of the right side of the face, tactile and algesic hypaesthesia in the left side of the body and nystagmus in the bilateral horizontal gaze. Results of the general physical exploration were normal. A magnetic resonance (MR) brain scan revealed a 3 cm expansive lesion in the middle cerebellar peduncle and right cerebellar hemisphere, which was hypointense in T1 and hyperintense in T2. Administering contrast showed it to be heterogeneous, with irregular annular enhancement, and perilesional edema. Subtotal excision of the lesion was performed and pathological analysis allowed a diagnosis of glioblastoma multiforme to be made; radio and chemotherapy were continued. CONCLUSION CGM is infrequent and 46.7 years is the mean age of onset. 59% of tumours are located in the hemispheres, they tend to spread locally, and remote metastases have also been reported. Initial clinical manifestations are intracranial hypertension, and gait and balance disorders. Differential diagnosis is provided by MR and includes metastasis, infarction and abscesses. Treatment involves radical surgical excision followed by local radiotherapy. The use of chemotherapy has been reported but its role in the treatment of this entity is still not altogether clear.
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Affiliation(s)
- A Pato-Pato
- Sección de Neurología, Hospital Povisa, Vigo, Pontevedra.
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Labandeira J, León-Mateos A, Suárez-Peñaranda JM, Garea MT, Toribio J. What is nodular-keloidal scleroderma? Dermatology 2004; 207:130-2. [PMID: 12920359 DOI: 10.1159/000071780] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2002] [Accepted: 11/28/2002] [Indexed: 11/19/2022] Open
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Labandeira J, León-Mateos A, Suárez-Peñaranda JM, Garea MT, Toribio J. Polymorphic fibrosing reaction mimicking keloidal scleroderma but without associated classic scleroderma. Dermatology 2004; 207:204-5. [PMID: 12920378 DOI: 10.1159/000071799] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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20
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Ortiz-Rey JA, Suárez-Peñaranda JM, Muñoz-Barús JI, Alvarez C, San Miguel P, Rodríguez-Calvo MS, Concheiro-Carro L. Expression of fibronectin and tenascin as a demonstration of vital reaction in rat skin and muscle. Int J Legal Med 2003; 117:356-60. [PMID: 14586623 DOI: 10.1007/s00414-003-0403-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2003] [Accepted: 08/14/2003] [Indexed: 10/26/2022]
Abstract
The efficiency of immunohistochemical techniques for the diagnosis of vitality of wounds decreases for lesions occurring fairly close to death. We analyzed the expression of fibronectin (FN) and tenascin (TN) in wounds inflicted in abdominal skin of 12 adult rats. An incised injury was made at 5, 10 or 15 min before death and another at 5 min after sacrifice, and collected after 45 min. Formalin-fixed paraffin-embedded sections from a total of 36 samples (mean 1.5 per wound) were immunostained following the streptABC technique. Microscopic examination revealed a reticular pattern staining in 18 out of 20 vital samples for FN, 16 out of 20 for TN, 2 out of 16 postmortem samples for FN and 3 out of 16 for TN. Intracellular staining of muscle fibres was observed in 7 out of 20 vital and 5 out of 16 postmortem samples. FN and TN were detected in most of the vital injuries but they are not completely specific. Postmortem staining occurred in a few cases probably related to a passive extravasation of these molecules from damaged blood vessels. Reactivity of muscle fibres occurs both in vital and postmortem lesions, and is not useful in the diagnosis of vitality.
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Affiliation(s)
- J A Ortiz-Rey
- Servicio de Patología, Centro Médico POVISA, Salamanca 5, 36211, Vigo, Pontevedra, Spain
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21
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Abdulkader I, Suárez-Peñaranda JM, Antúnez J, Otero M, Pazos G, Escudero B, Forteza J. [Report of 2 cases of rhabdoid tumor originating in the small intestine]. Rev Esp Enferm Dig 2002; 94:369-70. [PMID: 12432596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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22
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Ortiz-Rey JA, Suárez-Peñaranda JM, Da Silva EA, Muñoz JI, San Miguel-Fraile P, De la Fuente-Buceta A, Concheiro-Carro L. Immunohistochemical detection of fibronectin and tenascin in incised human skin injuries. Forensic Sci Int 2002; 126:118-22. [PMID: 12084487 DOI: 10.1016/s0379-0738(02)00032-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Immunohistochemical detection of molecules involved in inflammatory reaction can be useful for the diagnosis of vitality in skin wounds. We studied the expression of fibronectin (FN) and tenascin (TN) in 58 human skin wounds (48 vital and 10 postmortem). The age of vital injuries ranged from 3 min to 8 h and postmortem specimens were collected after a postinfliction interval of 15-180 min. One hundred thirty-seven formalin-fixed paraffin-embedded sections (mean: 2.3 sections per case) were stained with each of two monoclonal antibodies against FN and TN using the streptABC technique. A reticular staining for FN in wound edge and dermis was observed in 50% of vital specimens versus 0% in postmortem cases. Immunoreactivity was reduced in 10 autolysed cases. FN positivity exclusively at the injury margin was observed in 39.4% of vital wounds and 10% of postmortem cases. TN was negative in all specimens. Vital and postmortem hemorrhage areas showed positivity for FN and TN. Due to its low sensitivity, immunohistochemical analysis of FN is useful for determining vitality only in a minority of cases. Different factors in everyday practice, including autolysis and technical problems often produce false negative reactions with the result that FN cannot be regarded as a reliable parameter of vitality. Positive reactions (network staining) are more valuable than negativity but are not pathognomonic. Both vital and postmortem hemorrhages show an enhanced positivity for FN and TN, thus impeding the diagnosis.
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Suárez-Peñaranda JM, Rodríguez-Calvo MS, Ortiz-Rey JA, Muñoz JI, Sánchez-Pintos P, Da Silva EA, De la Fuente-Buceta A, Concheiro-Carro L. Demonstration of apoptosis in human skin injuries as an indicator of vital reaction. Int J Legal Med 2002; 116:109-12. [PMID: 12056517 DOI: 10.1007/s00414-001-0278-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 11/24/2022]
Abstract
Demonstrating the vital character of an injury and estimation of the age are routine tasks in forensic pathology and although many different techniques have been applied to this problem none have been found to be completely satisfactory. Apoptosis, an active genetically controlled process, is the major mechanism by which homeostasis of a number of physiological systems in the body is regulated and changes in the rate following different kinds of stimuli have prompted us to test it as an indicator of vitality. We used an in situ end-labelling technique (Apop-Tag) in 30 human surgical skin injuries with age since injury ranging from 3 min to 8 h and found that apoptotic keratinocytes are found in over 50% of the cases with a post-infliction interval of at least 120 min. Apoptosis was not seen in injuries less than 120 min old or in normal skin, which was used as an external control. These results suggest that apoptosis could be a useful indicator for the intravital occurrence of injuries and could help to estimate the date of the skin injuries in some cases. The importance of strict technical control is stressed and the necessity of a complementary technique to confirm apoptosis is discussed.
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Affiliation(s)
- J M Suárez-Peñaranda
- Instituto de Medicina Legal Facultad de Medicina, Santiago de Compostela, Spain.
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24
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Suárez-Peñaranda JM, Rodríguez-Calvo MS, Muñoz JI, Pumarega-Vergara M, Sánchez-Herrero MJ, Concheiro-Carro L. Sudden neonatal death from congenital cystic adenomatoid malformation. Int J Legal Med 2001; 115:76-8. [PMID: 11724434 DOI: 10.1007/s004140100218] [Citation(s) in RCA: 3] [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: 10/27/2022]
Abstract
We report a case of congenital cystic adenomatoid malformation (CCAM) of the lungs resulting in sudden death immediately after birth. The case is extremely unusual because of the diffuse bilateral involvement. The extensive involvement of both lungs could explain the abrupt onset of the symptoms and the ineffectiveness of resuscitation attempts. The presence of cartilage as a part of the malformation adds interest to the case, since it is seldom found in this malformation and to the best of our knowledge has been reported only exceptionally in a type II CCAM.
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Affiliation(s)
- J M Suárez-Peñaranda
- Instituto de Medicina Legal, Facultad de Medicina, Santiago de Compostela, Spain.
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25
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Suárez-Peñaranda JM, de la Calle MC, Rodrìguez-Calvo MS, Muñoz JI, Concheiro L. Rupture of liver cell adenoma with fatal massive hemoperitoneum resulting from minor road accident. Am J Forensic Med Pathol 2001; 22:275-7. [PMID: 11563739 DOI: 10.1097/00000433-200109000-00015] [Citation(s) in RCA: 9] [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] [Indexed: 01/10/2023]
Abstract
Blunt abdominal trauma can cause rapid death resulting from serious injuries of internal organs. The liver is commonly involved and may show tearing, usually in its upper surface, resulting in hemoperitoneum eventually leading to death. Minor trauma implies serious liver damage only when previous pathologic changes causing enlargement of the organ are present. The case of a 25-year-old woman who died as a consequence of a minor road accident is reported. At autopsy, the body showed no external injuries, the only relevant finding being a massive hemoperitoneum from the rupture of an unusually large liver cell adenoma. Liver cell adenomas carry a serious risk of spontaneous rupture, which may result in the death of the patient. The occurrence of the rupture after a minor blunt abdominal trauma is highly unusual.
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26
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Rodríguez-Calvo MS, Tourret MN, Concheiro L, Muñoz JI, Suárez-Peñaranda JM. Detection of apoptosis in ischemic heart. Usefulness in the diagnosis of early myocardial injury. Am J Forensic Med Pathol 2001; 22:278-84. [PMID: 11563740 DOI: 10.1097/00000433-200109000-00016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/27/2022]
Abstract
Myocardial samples of hearts with histologic findings of acute myocardial infarction (group A), sudden coronary deaths without histologic changes (group B), and chronic ischemic heart disease (group C) were analyzed to investigate the appearance of apoptosis in acute and chronic ischemic cardiac disorders. This analysis involved the morphologic detection of DNA strand breaks in myocyte nuclei by the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) assay and the biochemical determination of DNA laddering in the myocardium using archival formalin-fixed, paraffin-embedded tissue sections of human myocardium. The authors demonstrated that apoptosis of myocardial cells could occur after ischemic myocardial cell injury. In all documented cases of acute myocardial infarction (group A), the infarcted area included extensive presence of both apoptosis and necrosis. In the tissue bordering on and away from the obviously infarcted areas, positive nuclei were intermingled with nonstained normal myocytes. The number of positive nuclei decreased with the distance from the infarction foci. In group B, myocardial samples showed focal or diffuse nuclear positivity of varying degrees for apoptosis, confirming the presence of myocardial ischemic cell death, whereas the histologic diagnosis remained inconclusive. This finding suggests that apoptosis could be used as a marker for acute ischemic injury. In group C, stained nuclei were dispersed with intermingled normal cardiomyocytes.
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27
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Muñoz JI, Liñares-Iglesias M, Suárez-Peñaranda JM, Mayo M, Miguéns X, Rodríguez-Calvo MS, Concheiro L. Stature estimation from radiographically determined long bone length in a Spanish population sample. J Forensic Sci 2001; 46:363-6. [PMID: 11305442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The estimation of stature from of a variety of bones is an important aspect of forensic work. In order to obtain reliable results, it is important to have comparative data obtained from the same population group as the skeletal remains. However, lack of up to date information on the population groups of Southern Europe makes the estimation of stature from bones in this area subject to possible error. In this study, the stature of 104 healthy adults from Spain was measured, and an anteroposterior teleradiograph of the right lower and the right upper limb of every subject in the study was made in order to measure the lengths of the femur, tibia, fibula, humerus, cubitus and ulna. Pearson's regression formulae were obtained for both limbs. In males, we found the femur to be the most accurate predictor of stature (R = 0.851), whereas in females best results were obtained with the tibia (R = 0.876).
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Affiliation(s)
- J I Muñoz
- Institute of Legal Medicine, University of Santiago de Compostela, Spain
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28
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Muñoz JI, Suárez-Peñaranda JM, Otero XL, Rodríguez-Calvo MS, Costas E, Miguéns X, Concheiro L. A new perspective in the estimation of postmortem interval (PMI) based on vitreous. J Forensic Sci 2001; 46:209-14. [PMID: 11305419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The relation between the potassium concentration in the vitreous humor, [K+], and the postmortem interval has been studied by several authors. Many formulae are available and they are based on a correlation test and linear regression using the PMI as the independent variable and [K+] as the dependent variable. The estimation of the confidence interval is based on this formulation. However, in forensic work, it is necessary to use [K+] as the independent variable to estimate the PMI. Although all authors have obtained the PMI by direct use of these formulae, it is, nevertheless, an inexact approach, which leads to false estimations. What is required is to change the variables, obtaining a new equation in which [K+] is considered as the independent variable and the PMI as the dependent. The regression line obtained from our data is [K+] = 5.35 + 0.22 PMI, by changing the variables we get PMI = 2.58[K+] - 9.30. When only nonhospital deaths are considered, the results are considerably improved. In this case, we get [K+] = 5.60 + 0.17 PMI and, consequently, PMI = 3.92[K+] - 19.04.
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Affiliation(s)
- J I Muñoz
- Institute of Legal Medicine, University of Santiago de Compostela, Spain
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29
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Rodríguez-Pereira C, Suárez-Peñaranda JM, Vázquez-Salvado M, Sobrido MJ, Abraldes M, Barros F, Forteza J. Value of MIB-1 labelling index (LI) in gliomas and its correlation with other prognostic factors. A clinicopathologic study. J Neurosurg Sci 2000; 44:203-9; discussion 209-10. [PMID: 11327289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND In recent years, the monoclonal antibody MIB-1 has become the main factor to measure the proliferative potential of glial tumors. This antibody is equivalent to Ki-67, which is used in frozen sections, and reacts with a nuclear protein that is expressed through the cell cycle. We have investigated the value of MIB-1 Labelling Index (LI) as an independent prognostic factor in gliomas and its relationship with clinical and pathological parameters. METHODS MIB-1 LI was determined in 139 gliomas by using the Streptavidin-Biotin Complex (SBC) immunohistochemical method. MIB-1 LI immunoreactivity was measured with an automatic cell counting system. Survival was studied by using the Kaplan-Meier bivariant analysis and Cox multivariant regression. RESULTS In bivariant analysis MIB-1 LI increased with age, histological grade and a supratentorial lateral location. Only size and tumor grade were significant in Cox regression. CONCLUSIONS Perhaps this proliferation marker is influenced by many factors which reduce its value as an isolated prognostic parameter.
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Suárez-Peñaranda JM, Rico-Boquete R, Muñoz JI, Rodríguez-Núñez A, Martínez Soto MI, Rodríguez-Calvo M, Concheiro-Carro L. Unexpected sudden death from coronary sinus thrombosis. An unusual complication of central venous catheterization. J Forensic Sci 2000; 45:920-2. [PMID: 10914599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Coronary sinus thrombosis is an unusual but potentially serious complication of the use of central venous devices. We report a fatal case of coronary sinus thrombosis in relation to a malpositioned central venous catheter. The death occurred very soon following the beginning of symptoms and the cause could not be suspected. Direct trauma of the catheter on the coronary sinus endothelium seems the most probable cause of the thrombosis.
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Affiliation(s)
- J M Suárez-Peñaranda
- Institute of Legal Medicine, University of Santiago de Compostela, Department of Pathology, University Hospital of Santiago de Compostela, Spain.
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Abstract
Glial cell line-derived neurotrophic factor (GDNF) is expressed in many neuronal and non-neuronal tissues during development as well as in adult animals. GDNF signaling is mediated through a two-component system consisting of the so called GDNF receptor-alfa (GFRalpha1) which binds to GDNF. Thereafter this complex binds to and activates the tyrosine kinase receptor RET. In this work, for the first time, we have characterized the expression of both GDNF and RET in the anterior pituitary. First of all, RT-PCR analysis, Western blot and immunohistochemistry of the whole anterior pituitary showed that GDNF, GFRalpha1 and RET are expressed in this gland. Following double-immunofluorescence of consecutive sections we found GDNF immunoreactivity in most cell types, and it was most abundant in corticotrophs (55%), LH (59%) and FSH-producing cells (81%). In contrast, while the majority of somatotrophs (87%) were stained for RET, no positive immunostaining could be detected in other cell types. Taken together, this data indicate that gonadotrophs and corticotrophs are the main source of GDNF synthesized in the anterior pituitary and that the somatotrophs appears to be their target cell. This study provides direct morphological evidences that GDNF may well be acting in a paracrine-like fashion in the regulation of somatotroph cell growth and/or cell function.
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Affiliation(s)
- A G Urbano
- Department of Physiology, Faculty of Medicine, University of Santiago de Compostela, Spain
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Abstract
Compression of the neck, either with the hands or by a ligature, is not an uncommon method of homicide. Burning of the body to try to conceal the homicide may complicate the situation by making it difficult to interpret the findings. We hereby report two cases of homicidal ligature strangulation with extensive burning of the bodies. In both cases, external findings included the presence of a soft piece of fabric around the neck that, when removed, disclosed a portion of pale, unburned skin that vividly contrasted with surrounding areas. Osteocartilaginous lesions were present in only one case. Carboxyhemoglobin levels in both cases were very low, and the histopathologic examination of distal airways for soot particles was negative.
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Affiliation(s)
- J M Suárez-Peñaranda
- University Institute of Legal Medicine of Santiago de Compostela, Galicia, Spain
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Calvino J, Romero R, Suárez-Peñaranda JM, Arcocha V, Lens XM, Mardaras J, Novoa D, Sánchez-Guisande D. Secondary hyperparathyroidism exacerbation: a rare side-effect of interferon-alpha? Clin Nephrol 1999; 51:248-51. [PMID: 10230558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
Recombinant human interferon alpha (alpha IFN) is the only treatment with proven benefit for chronic hepatitis C virus (HCV) infection. Nevertheless its use in some susceptible individuals has led to the development or aggravation of different autoimmune conditions. We report the case of a 20 year old woman on peritoneal dialysis with chronic lobular hepatitis secondary to HCV infection who developed de novo psoriasis 9 months after starting treatment with alpha-IFN. In addition to psoriasis, alpha-IFN prescription was also concurrent with an unexpected and refractory secondary hyperparathyroidism exacerbation initially characterized by a marked reduction of serum calcium levels and a consequential increase of PTH. Both complications disappeared after drug withdrawal. The clinical sequence makes an alpha-IFN-induced autoimmune side effect the most plausible hypothesis. The case is discussed and some possible etiopathogenic factors are briefly reviewed.
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Affiliation(s)
- J Calvino
- Division of Nephrology, Complexo Hospitalario Universitario, Santiago de Compostela, Spain
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34
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Suárez-Peñaranda JM, Rico-Boquete R, López-Rivadulla M, Blanco-Pampín J, Concheiro-Carro L. A fatal case of suicidal pentoxifylline intoxication. Int J Legal Med 1998; 111:151-3. [PMID: 9587798 DOI: 10.1007/s004140050136] [Citation(s) in RCA: 7] [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: 02/07/2023]
Abstract
Pentoxifylline is a xanthine derivative used in the treatment of peripheral vascular disease. It is considered to be a safe drug and to the best of our knowledge there are no reports in the medical literature of cases of fatal poisoning. There is only one previous report of a young woman who tried to commit suicide by taking a large amount of the drug but recovered. We report the case of a 54-year-old man who took a massive dose of pentoxifylline and died after 24 h from refractory shock. The blood levels of pentoxifylline were as high as 32.5 micrograms/ml where the average therapeutic level is 1.3 micrograms/ml.
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Affiliation(s)
- J M Suárez-Peñaranda
- Instituto de Medicina Legal, Facultad de Medicina, Santiago de Compostela, Spain
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35
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Rodríguez-Pereira C, Suárez-Peñaranda JM, del Río E, Forteza-Vila J. Cutaneous granulomatous vasculitis after herpes zoster infection showing polyarteritis nodosa-like features. Clin Exp Dermatol 1997; 22:274-6. [PMID: 9604453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Various cutaneous lesions have been described after herpes zoster infection, such as lymphomas, pseudolymphoma and granulomatous conditions (granuloma annulare, tuberculoid granuloma, sarcoidosis). However, granulomatous vasculitis is an extremely rare sequel. We now describe a case of superficial granulomatous vasculitis with deep 'polyarteritis nodosa (PAN)-like' arteritis that developed after herpes zoster infection. Polymerase chain reaction did not detect genome of the herpes virus. We suggest that this condition could be an immune response to viral proteins.
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Affiliation(s)
- C Rodríguez-Pereira
- Department of Pathology, Complejo Hospitalario Universitario de Santiago, Santiago de Compostela, Spain
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36
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Abstract
We report a case of planned complex suicide (PCS) by a young man who had previously tried to commit suicide twice. He was found dead hanging by his neck, with a shot in his head. The investigation of the scene, the method employed, and previous attempts at suicide altogether pointed toward a suicidal etiology. The main difference between PCS and those cases defined in the medicolegal literature as combined suicides lies in the complex mechanism used by the victim as a protection against a failure in one of the mechanisms.
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Affiliation(s)
- J M Blanco-Pampín
- Institute of Legal Medicine, University of Santiago de Compostela, Spain
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37
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Abstract
The use of central venous catheters has greatly increased and so has the incidence of major complications. Catheter tip embolism is especially hazardous and sometimes may be fatal. We report a case of sudden death as a late and unusual complication of a catheter fragment embolism. The patient, a 39-year-old alcoholic man, suffered a nonreversible cardiac arrest shortly after his admission to hospital. Autopsy revealed a 54-cm-long fragment of an intravenous catheter in the right ventricle and the pulmonary trunk. Death was attributed to a cardiac arrhythmia.
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