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Pérez-Pérez M, Agostino A, de Sola-Llamas CG, Ruvolo M, Vilches-Arenas A, Relimpio-López MI, Espejo-Arjona F, Macías-García L, De Miguel-Rodríguez M, García-Escudero A, Idoate MA, Ríos-Martín JJ. Next-generation sequencing of uveal melanoma with clinical and histological correlations: Prognostic value of new mutations in the PI3K/AKT/mTOR pathway. Clin Exp Ophthalmol 2023; 51:822-834. [PMID: 37803816 DOI: 10.1111/ceo.14302] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/10/2023] [Accepted: 09/19/2023] [Indexed: 10/08/2023]
Abstract
BACKGROUND Uveal melanoma (UM) is the eye's most common primary malignancy and there are no effective therapies for disseminated disease. It is important to try to know the patient's prognosis. The aim of this study was to reflect genetic variants, studied using NGS, of a series of 69 cases of UM and its correlation with histopathology and clinical progression. METHODS We performed targeted NGS using a 519-gene panel. RESULTS There were selected 28 different mutated genes, showing a total of 231 genetic variants that affected the function of the protein. The most common secondary mutations occurred in SF3B1 (in 26%), followed by BAP1 (in 23%), LRP1B (22%) and FGFR4 (20%). BAP1 mutation was associated with a greater likelihood of metastases and with greater presence of epithelioid cells. LRP1B was also associated with presence of epithelioid cells SF3B1 mutation was significantly associated with a spindle morphology. We found variants in the RAD51B, TOP2A, PTPRD, TSC2, DHX9, PDK1 and MTOR that have not been previously reported in consulted databases. The presence of a mutation in: CHEK2, DHX9 and PDK1 was associated with metastases. CONCLUSIONS BAP1 is the most solid biomarker of a poor prognosis in UM and mutations can be detected using NGS. SF3B1 is associated with the spindle cell subtype of UM, which gives it probably a favourable prognostic value. Our study suggests that mutations in DHX9 and PDK1 can have prognostic value. These potential biomarkers are related to the PI3K/AKT/mTOR pathway and makes them candidates for developing new directed therapies.
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Affiliation(s)
- Manuel Pérez-Pérez
- Department of Anatomic Pathology, Virgen Macarena University Hospital, Seville, Spain
| | - Alessandro Agostino
- Diagnostics and Genomics Division, Agilent Technologies Italia S.p.A. Cernusco sul Naviglio, Milan, Italy
| | | | - Michael Ruvolo
- Diagnostics and Genomics Division, Agilent Technologies, Inc., Santa Clara, California, USA
| | - Angel Vilches-Arenas
- Department of Preventive Medicine and Public Health, Faculty of Medicine, University of Seville, Seville, Spain
| | | | | | - Laura Macías-García
- Department of Normal and Pathological Histology and Cytology, Faculty of Medicine, University of Seville, Seville, Spain
| | - Manuel De Miguel-Rodríguez
- Department of Normal and Pathological Histology and Cytology, Faculty of Medicine, University of Seville, Seville, Spain
| | | | - Miguel A Idoate
- Department of Anatomic Pathology, Virgen Macarena University Hospital, Seville, Spain
- Department of Normal and Pathological Histology and Cytology, Faculty of Medicine, University of Seville, Seville, Spain
| | - Juan J Ríos-Martín
- Department of Anatomic Pathology, Virgen Macarena University Hospital, Seville, Spain
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2
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López-Janeiro Á, Blasco-Santana L, Pérez-Pérez M, Ruiz-Bravo E. Diagnostic role of DOG-1, GFAP and B-catenin in Basal cell Adenoma and Cellular Pleomorphic Adenoma of the Salivary Gland. Head Neck Pathol 2022:10.1007/s12105-022-01498-7. [PMID: 36307634 DOI: 10.1007/s12105-022-01498-7] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 02/09/2023]
Abstract
BACKGROUND Pleomorphic Adenoma (PA) and Basal cell adenoma (BCA) are benign salivary gland tumors that may pose a diagnostic challenge if typical features are not present. Due to the increased relapse and malignant transformation rate of the former, a correct diagnosis carries relevant prognostic information. Even though immunohistochemistry (IHC) plays a limited role in the diagnosis of these tumors, the use of IHC panels could increase diagnostic accuracy. In the present work, we aimed to demonstrate that the use of an IHC panel consisting of Glial Fibrillary Acid Protein (GFAP), B-Catenin and Discovered On GIST 1 (DOG-1) can aid in the differential diagnosis between PA and BCA. METHODS We analyzed 18 cases of benign salivary gland tumors (Pleomorphic adenomas and Basal cell adenomas) with overlapping histologic features. First, a head and neck pathologist diagnosed the cases relying on morphology alone. Afterwards, cases were re-evaluated considering the IHC panel results. Inter-observer IHC scoring concordance was evaluated with pre-defined marker cut-off points using Cohen's Kappa scores. RESULTS Based on morphology alone, 9 cases were classified as PA while the remaining tumors were considered to be BCA. Five out of nine BCA cases showed GFAP staining and absent nuclear B-catenin and DOG-1 positivity. Conversely, 2 PA cases showed absent GFAP and positive nuclear B-catenin with concurrent DOG-1 expression. Therefore, after IHC evaluation, up to 40% of morphologic diagnoses were reconsidered. Overall, the inter-observer concordance for IHC evaluation was good (resulting Kappa Scores between 0.78 and 1). CONCLUSION Our work supports the use of a concise IHC panel to improve the diagnostic accuracy of benign salivary gland tumors with overlapping histologic features.
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Affiliation(s)
- Álvaro López-Janeiro
- Department of Pathology, Clínica Universidad de Navarra, Av. de Pío XII 36, Pamplona, Navarra, Spain.
| | - Luis Blasco-Santana
- Department of Pathology, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Manuel Pérez-Pérez
- Department of Pathology, Hospital Universitario Virgen de Valme, Seville, Andalusia, Spain
| | - Elena Ruiz-Bravo
- Department of Pathology, University Hospital La Paz, Madrid, Spain
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Triviño A, Sabariego I, Pérez-Pérez M, Jiménez Merchán R. Mediastinal solitary fibrous tumor. Cir Esp 2022; 100:646. [PMID: 35753574 DOI: 10.1016/j.cireng.2022.06.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 09/21/2021] [Indexed: 06/15/2023]
Affiliation(s)
- Ana Triviño
- Servicio de Cirugía Torácica. Hospital Universitario Virgen Macarena, Sevilla, Spain.
| | - Inmaculada Sabariego
- Servicio de Cirugía Torácica. Hospital Universitario Virgen Macarena, Sevilla, Spain
| | - Manuel Pérez-Pérez
- Servicio de Anatomía Patológica, Hospital Universitario Virgen Macarena, Sevilla, Spain
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4
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Affiliation(s)
- T Valdés Delgado
- Gastroenterology Department, University Hospital Virgen Macarena, Seville, Spain
| | - C Rodríguez Delgado
- Gastroenterology Department, University Hospital Virgen Macarena, Seville, Spain
| | - M Pérez-Pérez
- Pathological Anatomy Department, University Hospital Virgen Macarena, Seville, Spain
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5
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Triviño A, Sabariego I, Pérez-Pérez M, Jiménez Merchán R. Tumor fibroso solitario mediastínico. Cir Esp 2021. [DOI: 10.1016/j.ciresp.2021.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Ríos-Martín JJ, Pérez-Pérez M, Umbría-Jiménez S, Moreno-Ramírez D, Vallejo-Benítez A. An Unusual Case of Desmoplastic Melanoma With Monster Cells Imitating an Atypical Fibroxanthoma. Int J Surg Pathol 2021; 30:313-316. [PMID: 34541940 DOI: 10.1177/10668969211044758] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Numerous cells with very large and irregular nuclei ("monster" cells) have not hitherto been reported in desmoplastic melanoma (DM). Their prognostic significance in melanomas is a matter of debate, although some authors have associated them with more aggressive tumor behavior. We report a mixed DM on the scalp of an 88-year-old woman imitating an atypical fibroxanthoma. Tumor cells stained positive for SOX10, S100, and cyclin D1; BRAF mutation status was negative, and fluorescence in situ hybridization analysis showed copy number gains in 11q13 (cyclin D1) and 6p25 (RREB1), and loss in 6q23 (MYB). Cyclin D1 amplification is associated with poor prognosis in melanoma.
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Affiliation(s)
- Juan J Ríos-Martín
- 16582Department of Pathology, University Hospital Virgen Macarena, Sevilla, Spain
| | - Manuel Pérez-Pérez
- 16582Department of Pathology, University Hospital Virgen Macarena, Sevilla, Spain
| | | | - David Moreno-Ramírez
- 16582Department of Dermatology, University Hospital Virgen Macarena, Sevilla, Spain
| | - Ana Vallejo-Benítez
- 16582Department of Pathology, University Hospital Virgen Macarena, Sevilla, Spain
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7
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Idoate MA, Trigo I, Saenz de Zaitigui J, Pérez-Pérez M, Ríos JJ. Morphological and Molecular Study of Hybrid Oncocytic/Chromophobe Tumor of the Kidney Associated with Sporadic Renal Oncocytosis and Chronic B-Cell Lymphocytic Leukemia: The Possible Contribution of Lymphoma to Renal Oncocytosis. Pathobiology 2021; 88:313-322. [PMID: 33882490 DOI: 10.1159/000515215] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/11/2021] [Indexed: 11/19/2022] Open
Abstract
Hybrid oncocytic/chromophobe tumor (HOCT) of the kidney arising from a precursor oncocytosis not associated with the Birt-Hogg-Dubé (BHD) syndrome is an unusual and highly interesting neoplasm. Immunohistochemical and molecular findings suggest that HOCT is an entity distinct from both oncocytoma and chromophobe carcinoma. Although uncertainty persists regarding the factors predisposing to the development of HOCT, experimental findings suggest that it may arise due to the effect of toxins or in association with chronic kidney failure. The potential role of prior renal lymphoma in the development of oncocytosis has not hitherto been examined. We present a morphological, immunohistochemical, and molecular analysis of an HOCT arising from renal oncocytosis in conjunction with CLL affecting the kidney. The findings suggest that this tumor belongs to a family of similar neoplasms including oncocytoma, the eosinophilic variant of chromophobe renal-cell carcinoma (CRCC), and low-grade oncocytic tumor, even though these neoplasms may arise from different precursor lesions. HOCT and oncocytosis revealed the same immunohistochemical profile consistent on positivity for epithelial membrane antigen (EMA), cytokeratin 7 (Ck7), E-cadherin, CAM 5.2 and negativity for Pax-8, vimentin, renal-cell carcinoma (RCC) antigen, CD117, racemase, progesterone receptor, and CD10. The Ki-67 proliferation index was <1%. Molecular analysis of the tumor revealed the AKT3 gene mutation variant, classified as probably pathogenic, together with FOS1 gene amplification and no copy number variations (CNVs). Finally, we present a case of HOCT arising from a nonhereditary renal oncocytosis in conjunction with B lymphoma that raises interesting questions regarding pathogenesis.
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Affiliation(s)
- Miguel A Idoate
- Pathology, University Hospital Virgen Macarena, University of Seville, Sevilla, Spain
| | - Inmaculada Trigo
- Pathology, University Hospital Virgen Macarena, University of Seville, Sevilla, Spain
| | - Jesús Saenz de Zaitigui
- Radiology Department, University Hospital Virgen Macarena, University of Seville, Sevilla, Spain
| | - Manuel Pérez-Pérez
- Pathology, University Hospital Virgen Macarena, University of Seville, Sevilla, Spain
| | - Juan José Ríos
- Pathology, University Hospital Virgen Macarena, University of Seville, Sevilla, Spain
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8
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Pérez-Pérez M, Umbría-Jiménez S, Mora-Cabeza M, Fernández-Orland A, Ríos-Martín JJ. Basal cell carcinoma colonized by lentigo maligna melanoma, with perineural invasion by both neoplasms. J Cutan Pathol 2020; 47:1232-1236. [PMID: 32989833 DOI: 10.1111/cup.13886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 09/25/2020] [Accepted: 09/25/2020] [Indexed: 11/26/2022]
Affiliation(s)
- Manuel Pérez-Pérez
- Department of Anatomic Pathology, Virgen Macarena University Hospital, Seville, Spain
| | | | | | | | - Juan J Ríos-Martín
- Department of Anatomic Pathology, Virgen Macarena University Hospital, Seville, Spain
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9
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Rogado J, Obispo B, Pangua C, Serrano-Montero G, Martín Marino A, Pérez-Pérez M, López-Alfonso A, Gullón P, Lara MÁ. Covid-19 transmission, outcome and associated risk factors in cancer patients at the first month of the pandemic in a Spanish hospital in Madrid. Clin Transl Oncol 2020; 22:2364-2368. [PMID: 32449128 PMCID: PMC7246222 DOI: 10.1007/s12094-020-02381-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/09/2020] [Indexed: 12/13/2022]
Abstract
Background There are no large reported series determining the Covid-19 cancer patient’s characteristics. We determine whether differences exist in cumulative incidence and mortality of Covid-19 infection between cancer patients and general population in Madrid. Material and methods We reviewed 1069 medical records of all cancer patients admitted at Oncology department between Feb 1 and April 7, 2020. We described Covid-19 cumulative incidence, treatment outcome, mortality, and associated risk factors. Results We detected 45/1069 Covid-19 diagnoses in cancer patients vs 42,450/6,662,000 in total population (p < 0.00001). Mortality rate: 19/45 cancer patients vs 5586/42,450 (p = 0.0001). Mortality was associated with older median age, adjusted by staging and histology (74 vs 63.5 years old, OR 1.06, p = 0.03). Patients who combined hydroxychloroquine and azithromycin presented 3/18 deaths, regardless of age, staging, histology, cancer treatment and comorbidities (OR 0.02, p = 0.03). Conclusion Cancer patients are vulnerable to Covid-19 with an increase in complications. Combined hydroxychloroquine and azithromycin is presented as a good treatment option.
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Affiliation(s)
- J Rogado
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain.
| | - B Obispo
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain
| | - C Pangua
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain
| | - G Serrano-Montero
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain
| | - A Martín Marino
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain
| | - M Pérez-Pérez
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain
| | - A López-Alfonso
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain
| | - P Gullón
- Public Health and Epidemiology Research Group, Universidad de Alcalá, Alcalá de Henares, Spain
| | - M Á Lara
- Medical Oncology Department, Hospital Univeristario Infanta Leonor, Gran vía del este, 81, 28031, Madrid, Spain.,Universidad Complutense de Madrid, Madrid, Spain
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10
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Pérez-Pérez M, Manzotti C, Merchante-Ruíz Mateos M, González-Cámpora R, Ríos-Martín JJ. Myxoinflammatory fibroblastic sarcoma: A rare case affecting only the dermis. J Cutan Pathol 2020; 47:414-415. [PMID: 31876032 DOI: 10.1111/cup.13638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/05/2019] [Accepted: 12/19/2019] [Indexed: 12/01/2022]
Affiliation(s)
- Manuel Pérez-Pérez
- Department of Pathology, Universitary Hospital Virgen Macarena, Seville, Spain
| | - Carolina Manzotti
- Department of Pathology, Universitary Hospital Virgen Macarena, Seville, Spain
| | | | | | - Juan J Ríos-Martín
- Department of Pathology, Universitary Hospital Virgen Macarena, Seville, Spain
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11
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Álvarez-Ossorio MJ, Sarmento E Castro R, Granados R, Macías J, Morano-Amado LE, Ríos MJ, Merino D, Álvarez EN, Collado A, Pérez-Pérez M, Téllez F, Martín JM, Méndez J, Pineda JA, Neukam K. Impact of interferon-free regimens on the glomerular filtration rate during treatment of chronic hepatitis C in a real-life cohort. J Viral Hepat 2018; 25:699-706. [PMID: 29377515 DOI: 10.1111/jvh.12867] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 12/20/2017] [Indexed: 01/09/2023]
Abstract
Little data are available on renal toxicity exerted by direct-acting antivirals (DAAs) in real life. The aim of this study was to assess the impact of direct-acting antivirals against hepatitis C virus infection currently used in Spain and Portugal on the estimated glomerular filtration rate (eGFR) in clinical practise. From an international, prospective multicohort study, patients treated with DAAs for at least 12 weeks and with eGFR ≥30 mL/min per 1.73 m2 at baseline were selected. eGFR was determined using the CKD-EPI formula. A total of 1131 patients were included; 658 (58%) were HIV/HCV-coinfected patients. Among the 901 patients treated for 12 weeks, median (interquartile range) eGFR was 100 (87-107) at baseline vs 97 (85-105) mL/min per 1.73 m2 at week 12 of follow-up (FU12) post-treatment (P < .001). For HIV-coinfected subjects who received tenofovir plus a ritonavir-boosted HIV protease inhibitor (PI/r), baseline vs FU12 eGFR were 104 (86-109) vs 104 (91-110) mL/min per 1.73 m2 (P = .913). Among subjects receiving ombitasvir/paritaprevir with or without dasabuvir, eGFR did not show any significant change. Of 1100 subjects with eGFR >60 mL/min per 1.73 m2 at baseline, 22 (2%) had eGFR <60 mL/min per 1.73 m2 at FU12, but none presented with eGFR <30 mL/min per 1.73 m2 . In conclusion, eGFR slightly declines during therapy with all-oral DAAs and this effect persists up to 12 weeks after stopping treatment in subjects with normal to moderately impaired renal function, regardless of HIV status. Concomitant use of tenofovir plus PI/r does not seem to have an impact on eGFR.
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Affiliation(s)
- M J Álvarez-Ossorio
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain
| | | | - R Granados
- Unit of Infectious Diseases, Hospital Universitario de Gran Canaria Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - J Macías
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain
| | - L E Morano-Amado
- Unit of Infectious Pathology, Hospital Universitario Alvaro Cunqueiro, Vigo, Spain
| | - M J Ríos
- Unit of Infectious Diseases, Hospital Universitario Virgen Macarena, Seville, Spain
| | - D Merino
- Unit of Infectious Diseases, Complejo Hospitalario Universitario de Huelva, Huelva, Spain
| | - E N Álvarez
- Infectious Diseases Unit, Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - A Collado
- Infectious Diseases Unit, Hospital Universitario Torrecárdenas, Almeria, Spain
| | - M Pérez-Pérez
- Unit of Infectious Diseases, Hospital La Línea, AGS Campo de Gibraltar, Cadiz, Spain
| | - F Téllez
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Puerto Real, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Puerto Real, Spain
| | - J M Martín
- Unit of Infectious Diseases, Hospital Universitario de Gran Canaria Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - J Méndez
- Unit of Infectious Diseases, Centro Hospitalar do Porto, Porto, Portugal
| | - J A Pineda
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain
| | - K Neukam
- Unit of Infectious Diseases and Microbiology, Hospital Universitario de Valme, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Seville, Spain
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Pérez-Rodríguez G, Pérez-Pérez M, Fdez-Riverola F, Lourenço A. High performance computing for three-dimensional agent-based molecular models. J Mol Graph Model 2016; 68:68-77. [DOI: 10.1016/j.jmgm.2016.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 05/26/2016] [Accepted: 06/07/2016] [Indexed: 12/28/2022]
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13
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Mira JA, Neukam K, López-Cortés LF, Rivero-Juárez A, Téllez F, Girón-González JA, de los Santos-Gil I, Ojeda-Burgos G, Merino D, Ríos-Villegas MJ, Collado A, Torres-Cornejo A, Macías J, Rivero A, Pérez-Pérez M, Pineda JA. Efficacy of and risk of bleeding during pegylated interferon plus ribavirin treatment in HIV/HCV-coinfected patients with pretreatment thrombocytopenia. Eur J Clin Microbiol Infect Dis 2015; 34:1879-84. [PMID: 26115631 DOI: 10.1007/s10096-015-2426-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 06/05/2015] [Indexed: 01/21/2023]
Abstract
The aim of this study was to assess the efficacy of and the risk of major bleeding during pegylated interferon (peg-IFN)/ribavirin (RBV) treatment among human immunodeficiency virus (HIV)/hepatitis C virus (HCV)-coinfected patients according to the pretreatment platelet count. Two hundred and seventy-four HCV/HIV-coinfected, previously naïve individuals with compensated cirrhosis enrolled in one Spanish prospective cohort who received peg-IFN/RBV were included in this study. The frequency of severe bleeding and sustained virological response (SVR) rate were compared between patients with a pretreatment platelet count ≤70,000/mm(3) and >70,000/mm(3), respectively. Sixty-one (22 %) patients had a baseline platelet count ≤70,000/mm(3). The median (Q1-Q3) pretreatment platelet count was 58,000 (49,000-65,000) cells/mm(3) in the platelet ≤70,000 group and 129,000 (102,500-166,000) cells/mm(3) in the platelet >70,000 group (p < 0.0001). Seventeen (28 %) subjects of the platelet ≤70,000 group and 71 (33 %) patients of the platelet >70,000 group achieved SVR (p = 0.4). Only 2 (3.2 %) patients in the platelet ≤70,000 group developed a severe hemorrhagic event, specifically esophageal variceal bleeding. The efficacy of therapy with peg-IFN/RBV in HIV/HCV-coinfected patients with low pretreatment platelet counts is comparable to that found in the overall subset of subjects with compensated cirrhosis. The frequency of severe hemorrhagic events related with this therapy is low in this population.
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Affiliation(s)
- J A Mira
- Unidad Clínica de Enfermedades Infecciosas y Microbiología, Hospital Universitario de Valme, Avenida de Bellavista S/N, 41014, Sevilla, Spain
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Pérez-Pérez M, García-Suárez O, Blanco-Gelaz MA, Esteban I, Ciriaco E, Laurà R, Germanà A, Silos-Santiago I, Vega JA. TrkB mRNA and protein in mouse spleen: structure of the spleen of functionally deficient TrkB mice. Cell Tissue Res 2004; 316:179-87. [PMID: 15045579 DOI: 10.1007/s00441-004-0876-8] [Citation(s) in RCA: 6] [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] [Received: 09/30/2003] [Accepted: 02/16/2004] [Indexed: 10/26/2022]
Abstract
Whereas it is nowadays clear that neurotrophins are involved in the regulation of various aspects of the functioning of immune system, knowledge of their actual immunomodulatory roles is still fragmentary and incomplete. In this respect, knock-out mouse models remain particularly unexplored. In the present study, the expression of the TrkB neurotrophin receptor in murine spleen was addressed at the mRNA (reverse transcription/polymerase chain reaction) and protein (Western blot) levels. Once the presence of TrkB at both levels was demonstrated, the age-dependent changes in the pattern of expression of the receptor were analyzed and quantified, and TrkB-positive cells were identified by immunohistochemistry. TrkB-immunoreactive cells, identified as red pulp macrophages, were detected in the spleen throughout postnatal development and adult life; their numbers peaked at the age of 15 days. The absence of functional TrkB did not appear to result in morphological changes as assessed by light and electron microscopy of spleens from 15-day-old mice knockout for the trkB gene. The present results support the idea that, in the murine spleen, TrkB and its ligands are involved in macrophage physiology in a developmentally regulated fashion, but they do not seem to be essential for macrophage survival.
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Affiliation(s)
- M Pérez-Pérez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, C/ Julián Clavería, 33006 Oviedo, Spain
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Pérez-Pérez M, García-Suárez O, Esteban I, Germanà A, Fariñas I, Naves FJ, Vega JA. p75NTR in the spleen: age-dependent changes, effect of NGF and 4-methylcatechol treatment, and structural changes in p75NTR-deficient mice. Anat Rec A Discov Mol Cell Evol Biol 2003; 270:117-28. [PMID: 12524687 DOI: 10.1002/ar.a.10010] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In addition to their well-known actions within the nervous system, neurotrophins and their receptors are involved in immune system functioning, as demonstrated by their wide distribution in lymphoid tissues and their in vitro actions on immunocompetent cells. Nevertheless, the in vivo roles of neurotrophin-receptor systems in lymphoid tissues, as well as the scope of their influence throughout development and adulthood, are yet to be clarified. In the present study, we used combined morphological and immunohistochemical techniques to investigate the presence and cellular localization of p75NTR, the pan-neurotrophin receptor protein, in rat spleen from newborns to aging individuals, and the structural and innervation changes in the spleens of p75NTR-deficient mice. In rats, p75NTR was expressed by splenic nerve fibers and dendritic cells in an age-regulated fashion, with maximal expression detected at 2 weeks. Consistently, the spleens of newborn mice lacking this receptor protein showed no signs of ingrowing sympathetic fibers, along with an absence of defined white pulp areas. The present findings suggest a prolonged role of p75NTR in the physiology of the spleen; at least during the embryonic development period, the receptor may be critical for correct innervation and compartmentalization processes to occur.
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Affiliation(s)
- M Pérez-Pérez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
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Márquez J, Pérez-Pérez M, Naves FJ, Vega JA. Effect of spinal cord and peripheral nerve injury on human cutaneous sensory corpuscles. An immunohistochemical study. J Peripher Nerv Syst 2000; 2:49-59. [PMID: 10975736] [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
This study was aimed at analyzing the changes in cutaneous sensory corpuscles from the territory of lesioned nerves and clinically denervated skin of patients with spinal cord injury using immunohistochemical methods. The morphological and biochemical characteristics of the Schwann-related cells of the mature sensory corpuscles (lamellar cells of Meissner corpuscles and inner-core of Pacinian corpuscles) depend upon the axon. To clarify whether this dependence requires structural and/or functional integrity of sensory axons we analyzed immunohistochemically some axonal, Schwann cell and perineurial cell antigens in cutaneous sensory corpuscles from i) the underlesional levels of patients with spinal cord injury affecting dorsal and lateral funiculi; ii) peripheral nerve entrapment, iii) sectioned and grafted nerves. Skin biopsy samples from the hand or feet were processed for peroxidase-antiperoxidase immunohistochemistry using monoclonal antibodies directed against neurofilament proteins (to label the axons), S-100 protein (to label Schwann-related cells), epithelial membrane antigen (to label the perineurial derivatives), vimentin (to label both Schwann cell and perineurial derivatives). Meissner and Pacinian corpuscles of subjects suffering from spinal cord lesions showed an immunohistochemical profile close to normality, although in many of them S-100 protein was unevenly distributed or absent. Sensory corpuscles of the cutaneous territory of entrapped nerves were in most cases similar to those of normally innervated skin. The most striking finding in these subjects was the hyperinnervation of blood vessels and sweat glands. Finally, nerve section and subsequent unsuccessful graft repair resulted in absence of immunostaining for all the assessed antigens in sensory corpuscles. The present results suggest that structural, but not functional, integrity of the axon is essential in maintaining some immunohistochemical characteristics of the human cutaneous sensory corpuscles. Morphological findings are correlated and discussed in relation to the clinical evaluation of the sensitivity.
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Affiliation(s)
- J Márquez
- Servicio de Cirugía Plástica y Reparadora, Hospital Central de Asturias, Oviedo, Spain
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García-Suárez O, Germanà A, Hannestad J, Pérez-Pérez M, Esteban I, Naves FJ, Vega JA. Changes in the expression of the nerve growth factor receptors TrkA and p75LNGR in the rat thymus with ageing and increased nerve growth factor plasma levels. Cell Tissue Res 2000; 301:225-34. [PMID: 10955718 DOI: 10.1007/s004419900133] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [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: 11/24/2022]
Abstract
The nerve growth factor (NGF) receptors p75LNGR and TrkA are expressed by thymic epithelial cells. Presumably, the NGF-TrkA system is involved in the paracrine communication between thymic epithelial cells and thymocytes, whereas the functional role of p75LNGR is still unknown. The thymus of vertebrates undergoes age-related changes that in part depend on hormonal factors. In order to find out whether thymic epithelial cells are responsive to NGF during the whole lifespan of the rat, we studied NGF receptor expression in the thymus from birth to 2 years of age, using immunohistochemistry. Furthermore, to evaluate whether increased plasma levels of NGF affected the ageing process, either NGF or 4-methylcatechol (4MC), an inductor of NGF synthesis, was administered. Both TrkA and p75LNGR were expressed by a subpopulation of thymic epithelial cells during the whole age range studied and their expression peaked at around 3 months. TrkA was primarily found in subcortical and medullary epithelial cells, whereas p75LNGR was seen in a subpopulation of medullary cells. Cortical epithelial cells, neural crest-derived cells, other stromal cells and thymocytes were not immunoreactive for NGF receptors. Neither the administration of NGF nor the increased NGF plasma levels obtained after 4MC treatment seemed to affect the ageing of the thymus as assessed by morphological and immunohistochemical criteria, but this increase in NGF levels did produce a shift in the expression of p75LNGR from epithelial cells to ED1-positive macrophages in animals of 6 months and older. Present results indicate that the expression of p75LNGR and TrkA in the rat thymus undergoes age-dependent changes that parallel those of epithelial cells. NGF could therefore be important for thymus homeostasis, possibly acting on epithelial cells. Nevertheless, NGF did not seem to be able to prevent the involution of this organ, although it produced a switch in the expression of p75LNGR, the significance of which remains to be established.
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Affiliation(s)
- O García-Suárez
- Departmento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Spain
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Pérez-Pérez M, Esteban I, García-Suárez O, Hannestad J, Naves FJ, Vega JA. Expression of the neurotrophin receptor TrkB in rat spleen macrophages. Cell Tissue Res 1999; 298:75-84. [PMID: 10555541 DOI: 10.1007/s004419900089] [Citation(s) in RCA: 10] [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: 10/27/2022]
Abstract
Increasing evidence suggests that some members of the family of the neurotrophins could be involved in immune system functioning. Both neurotrophins and their tyrosine-kinase signal-transducing receptors, the so-called Trk receptors, have been detected in various lymphoid tissues in a number of species. Nevertheless, their cellular localisation remains unclear in most cases. In this study, we used immunohistochemical techniques to localise TrkB in the rat spleen (from 0 days to 2 years). Cells expressing TrkB-like immunoreactivity were found exclusively within the white pulp of the spleen, along the marginal zone-follicle border and inside the follicles and periarteriolar lymphoid sheaths. These cells probably represented macrophage subpopulations, since they expressed the ED3 rat macrophage antigen. No evidence of TrkB-like protein expression in lymphocytes or follicular dendritic cells could be found. Furthermore, the density of TrkB-immunoreactive cells was observed to increase with age. Although the role of TrkB ligands in these cells remains to be clarified, the present findings provide further evidence for the supposed role of neurotrophins in immune system homeostasis.
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Affiliation(s)
- M Pérez-Pérez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Spain
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López SM, Pérez-Pérez M, Márquez JM, Naves FJ, Represa J, Vega JA. p75 and TrkA neurotrophin receptors in human skin after spinal cord and peripheral nerve injury, with special reference to sensory corpuscles. Anat Rec (Hoboken) 1998; 251:371-83. [PMID: 9669765 DOI: 10.1002/(sici)1097-0185(199807)251:3<371::aid-ar13>3.0.co;2-l] [Citation(s) in RCA: 23] [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: 12/19/2022]
Abstract
Human skin, including nerves and sensory corpuscles, displays immunoreactivity (IR) for low- (p75) and high-affinity (TrkA-like) receptors for nerve growth factor (NGF), the best characterized member of the family of neurotrophins. This study was designed to analyze the changes induced by spinal cord and peripheral nerve injuries in the expression of neurotrophin receptors in digital skin, with special reference to nerves and sensory corpuscles. Skin biopsy samples were obtained from 1) the hand and toes of normal subjects, 2) below the level of the lesion of patients with spinal cord injury affecting dorsal and lateral funiculi, 3) the cutaneous territory of entrapped peripheral nerves (median and ulnar nerves), and 4) the cutaneous territory of sectioned and grafted nerves (median nerve). The pieces were formalin-fixed and paraffin-embedded, cut in serial sections, and processed for immunohistochemistry using antibodies against human p75 and TrkA proteins. The percentage of sensory corpuscles displaying IR for p75 and TrkA-like, as well as the intensity of IR developed within them, was assessed using quantitative image analysis. Spinal cord severance causes a decrease in p75 IR in Meissner and Pacinian corpuscles, whereas TrkA-like IR did not vary. In other nonnervous tissues (i.e., epidermis, sweat glands), both p75 and TrkA-like IR was diminished or even absent. Similar but more severe changes were encountered in the skin from the territory of entrapped nerves. Finally, in subjects with sectioned-grafted nerves, p75 IR was found close to controls in nerves, reduced in Meissner corpuscles, and absent in the inner core of the Pacinian ones; TrkA-like IR was in the perineurium, a small percentage of Meissner corpuscles (about 7%), and the outer core and capsule of the Pacinan corpuscles. In the nonnervous tissues, p75 IR was practically absent, whereas TrkA-like IR did not change. No changes in the expression of neurotrophin receptors were observed in Merkel cells of the different groups. Present results show the following: 1) expression of nerve p75 IR in human cutaneous sensory corpuscles is sensitive to central deafferentation, to blockade or difficulty in axonal transport, and to disruption of axonal continuity independently of possible restoration of axonal integrity due to grafts; 2) expression of TrkA-like IR in nerves and sensory corpuscles is sensitive only to nerve transection; 3) the corpuscular Schwann-related cells are the only cells involved in the above modifications, the perineurial cells remaining unchanged; 4) the expression of p75 and TrkA-like IR by Merkel cells is independent of normal innervation; 5) an adequate innervation of the skin seems to be necessary for the expression of p75 but not TrkA-like in nonneuronal cells, especially in the epidermis. A role for NGF in the maintenance of epidermis integrity is discussed.
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Affiliation(s)
- S M López
- Servicio de Cirugía Plástica y Reparadora, Hospital Central de Asturias, Oviedo, Spain
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Pérez-Cortés S, Pérez-Pérez M, Vergara de Campos A, Torres M, Lucero MI, Cifuentes N. [Adverse effects of cotrimoxazole in Spanish patients with AIDS and pneumonia caused by Pneumocystis carinii]. Enferm Infecc Microbiol Clin 1991; 9:409-12. [PMID: 1799610] [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: 12/28/2022]
Abstract
We retrospectively analyze the untoward effects due to cotrimoxazole (CMX) when this drug was used as initial therapy in 37 Spanish AIDS patients with Pneumocystis carinii pneumonia (PCP). A total of 46% of patients developed an adverse reaction, that was considered severe in 24.3% of cases, and prompted to stop CMX therapy in 10.8% of patients. The most frequent untoward effects were low white blood cells count (29.7%), skin rash (16.2%) and low platelet count (13.5%). The overall compliance and absence of undesirable effects to CMX seen in our patients, together with the well established clinical efficacy of this drug, allow us to recommend the use of CMX as initial therapy for Spanish AIDS patients with PCP.
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Affiliation(s)
- S Pérez-Cortés
- Grupo de Estudio de Enfermedades Infecciosas de la Provincia de Cádiz
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