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Von Werne K, Naranjo M, Appel H, Rehrer W, Rubens M, Larson G, Hartsell W, Ermoian R, Tsai H, Vargas C, Chuong M, Mehta M, Kotecha R, Hall M. Safety of Proton Therapy for Patients With Primary Central Nervous System Germinoma and Non-Germinomatous Germ Cell Tumors: Report from a Multi-Institutional Database Analysis. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.599] [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: 10/23/2022]
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Sepúlveda PO, Naranjo M. Electroencephalography in anaesthesia; opening minds to the future. Rev Esp Anestesiol Reanim (Engl Ed) 2019; 66:59-61. [PMID: 30527951 DOI: 10.1016/j.redar.2018.11.002] [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] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 06/09/2023]
Affiliation(s)
- P O Sepúlveda
- Clínica Alemana, Universidad del Desarrollo, Santiago de Chile, Chile.
| | - M Naranjo
- Clínica de Mérida, Mérida, Yucatán, México
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Ariza S, Espinosa S, Naranjo M. Nonsurgical Therapies for Basal Cell Carcinoma: A Review. Actas Dermosifiliogr 2017; 108:809-817. [PMID: 28433227 DOI: 10.1016/j.ad.2017.01.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 01/25/2017] [Accepted: 01/27/2017] [Indexed: 01/09/2023] Open
Abstract
Basal cell carcinoma (BCC) is the most prevalent malignant tumor in humans and the local destruction of tissue that can result from excision has a significant impact on well-being. Treating BCC is costly for health care systems given the high incidence of this tumor, especially in older patients. Standard treatment involves either resection with histologic assessment of margins or Mohs micrographic surgery. Surgery is sometimes contraindicated, however, due to the presence of significant comorbidity or high cosmetic expectations. For such patients, nonsurgical treatments have become available. These alternatives can offer good local control of disease, preserve function, and achieve excellent cosmetic results.
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Affiliation(s)
- S Ariza
- Servicio de Dermatología, Hospital San José, Fundación Universitaria de Ciencias de la Salud, FUCS, Bogotá, Colombia
| | - S Espinosa
- Servicio de Dermatología, Hospital San José, Fundación Universitaria de Ciencias de la Salud, FUCS, Bogotá, Colombia.
| | - M Naranjo
- Servicio de Dermatología, Hospital San José, Fundación Universitaria de Ciencias de la Salud, FUCS, Bogotá, Colombia
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Naranjo M. PS253 Cardiac Tumors: 16 Years of Experience in the National Institute of Cardiology Ignacio Chavez. Glob Heart 2016. [DOI: 10.1016/j.gheart.2016.03.195] [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: 11/25/2022] Open
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Naranjo M, Moreno AC, Martín S. ¿Dónde buscar troglobiontes? Ensayo de una cartografía predictiva con MaxEnt en Gran Canaria (islas Canarias). ACTA ACUST UNITED AC 2014. [DOI: 10.32800/amz.2014.12.0083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ivancik J, Naranjo M, Correa S, Ossa A, Tay FR, Pashley DH, Arola D. Differences in the microstructure and fatigue properties of dentine between residents of North and South America. Arch Oral Biol 2014; 59:1001-12. [PMID: 24960115 DOI: 10.1016/j.archoralbio.2014.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 01/19/2014] [Revised: 05/08/2014] [Accepted: 05/30/2014] [Indexed: 11/25/2022]
Abstract
UNLABELLED Spatial variations in the microstructure of dentine contribute to its mechanical behaviour. OBJECTIVE The objective of this investigation was to compare the microstructure and fatigue behaviour of dentine from donors of two different countries. METHODS Caries-free third molars were obtained from dental practices in Colombia, South America and the US to assemble two age-matched samples. The microstructure of the coronal dentine was evaluated at three characteristic depths (i.e. deep, middle and superficial dentine) using scanning electron microscopy and image processing techniques. The mechanical behaviour of dentine in these three regions was evaluated by the fatigue crack growth resistance. Cyclic crack growth was achieved in-plane with the dentine tubules and the fatigue crack growth behaviour was characterized in terms of the stress intensity threshold and the Paris Law parameters. RESULTS There was no difference in the tubule density between the dentine of patients from the two countries. However, there were significant differences (p≤0.05) in the tubule lumen diameters between the two groups in the deep and peripheral regions. In regards to the fatigue resistance, there was a significant increase (p≤0.05) in threshold stress intensity range, and a significant decrease in fatigue crack growth coefficient with increasing distance from the pulp in teeth from the US donors. In contrast, these properties were independent of location for the dentine of teeth from the Colombian donors. CONCLUSIONS The microstructure of dentine and its mechanical behaviour appear to be a function of patient background, which may include environmental factors and/or ethnicity.
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Affiliation(s)
- J Ivancik
- Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, MD, USA
| | - M Naranjo
- Bioengineering Research Group (GIB), Prosthodontic Department, CES University, Medellín, Colombia
| | - S Correa
- Bioengineering Research Group (GIB), Product Design Engineering Department, EAFIT University, Medellín, Colombia
| | - A Ossa
- School of Engineering, EAFIT University, Medellín, Colombia
| | - F R Tay
- Department of Endodontics, School of Dentistry, Georgia Regents University, Augusta, GA, USA
| | - D H Pashley
- Department of Oral Biology, School of Dentistry, Georgia Regents University, Augusta, GA, USA
| | - D Arola
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA, USA.
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Carlos F, Aguirre A, Naranjo M, Gutiérrez C, Querol J. FRI0175 Indirect Treatment Comparisons and Network Meta-Analysis among Biological Agents for Rheumatoid Arthritis: A Systematic Review of Published Literature. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2512] [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: 11/04/2022]
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Yde M, Naranjo M, Mattheus W, Stragier P, Pochet B, Beulens K, De Schrijver K, Van den Branden D, Laisnez V, Flipse W, Leclercq A, Lecuit M, Dierick K, Bertrand S. Usefulness of the European Epidemic Intelligence Information System in the management of an outbreak of listeriosis, Belgium, 2011. Euro Surveill 2012; 17:20279. [PMID: 23040965] [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: 06/01/2023] Open
Abstract
A cluster of time-linked cases and the identification of a clonal strain suggest the occurrence of an outbreak of listeriosis in Belgium in 2011, presumably due to the consumption of hard cheese made with pasteurised milk and produced by a Belgium manufacturer. The outbreak clone was identified as Listeria monocytogenes serovar 1/2a, sensitive to arsenic and cadmium and of multilocus sequence typing MLST-type 37. Food investigation of this outbreak was facilitated by the European Epidemic Intelligence Information System and data exchanged between French and Belgium listeriosis surveillance systems.
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Affiliation(s)
- M Yde
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
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Yde M, Naranjo M, Mattheus W, Stragier P, Pochet B, Beulens K, De Schrijver K, Van den Branden D, Laisnez V, Flipse W, Leclercq A, Lecuit M, Dierick K, Bertrand S. Usefulness of the European Epidemic Intelligence Information System in the management of an outbreak of listeriosis, Belgium, 2011. Euro Surveill 2012. [DOI: 10.2807/ese.17.38.20279-en] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A cluster of time-linked cases and the identification of a clonal strain suggest the occurrence of an outbreak of listeriosis in Belgium in 2011, presumably due to the consumption of hard cheese made with pasteurised milk and produced by a Belgium manufacturer. The outbreak clone was identified as Listeria monocytogenes serovar 1/2a, sensitive to arsenic and cadmium and of multilocus sequence typing MLST-type 37. Food investigation of this outbreak was facilitated by the European Epidemic Intelligence Information System and data exchanged between French and Belgium listeriosis surveillance systems.
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Affiliation(s)
- M Yde
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - M Naranjo
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - W Mattheus
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - P Stragier
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - B Pochet
- Federal Agency for the Safety of the Food Chain, Belgium
| | - K Beulens
- Federal Agency for the Safety of the Food Chain, Belgium
| | - K De Schrijver
- Infectious Disease Control Unit, Department of Public Health Surveillance, Flemish Agency for Care and Health, Antwerp, Belgium
| | - D Van den Branden
- Infectious Disease Control Unit, Department of Public Health Surveillance, Flemish Agency for Care and Health, Antwerp, Belgium
| | - V Laisnez
- Infectious Disease Control Unit, Department of Public Health Surveillance, Flemish Agency for Care and Health, Antwerp, Belgium
| | - W Flipse
- Infectious Disease Control Unit, Department of Public Health Surveillance, Flemish Agency for Care and Health, Antwerp, Belgium
| | - A Leclercq
- French National Reference Centre and WHOCC for Listeria, Institut Pasteur, Paris, France
| | - M Lecuit
- French National Reference Centre and WHOCC for Listeria, Institut Pasteur, Paris, France
| | - K Dierick
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
| | - S Bertrand
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
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Robesyn E, Micalessi MI, Quoilin S, Naranjo M, Thomas I. Cluster of hepatitis A cases among travellers returning from Egypt, Belgium, September through November 2008. Euro Surveill 2009. [DOI: 10.2807/ese.14.03.19095-en] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Following a European alert by France, we detected a hepatitis A cluster in Belgian travellers returning from Egypt. Our investigation supports the hypothesis of a common source outbreak, linked to Nile river cruises. The outbreak also suggests the need to consider an intensification of the vaccination policy for travellers to hepatitis A endemic countries.
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Affiliation(s)
- E Robesyn
- Flemish Agency for Care and Health, Department of Public Health Surveillance, Infectious Disease Control Unit, Brussels, Belgium
| | - M I Micalessi
- Scientific Institute of Public Health, Brussels, Belgium
| | - S Quoilin
- Scientific Institute of Public Health, Brussels, Belgium
| | - M Naranjo
- Scientific Institute of Public Health, Brussels, Belgium
| | - I Thomas
- Scientific Institute of Public Health, Brussels, Belgium
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Robesyn E, Micalessi MI, Quoilin S, Naranjo M, Thomas I. Cluster of hepatitis A cases among travellers returning from Egypt, Belgium, September through November 2008. Euro Surveill 2009; 14:19095. [PMID: 19161725] [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: 05/27/2023] Open
Abstract
Following a European alert by France, we detected a hepatitis A cluster in Belgian travellers returning from Egypt. Our investigation supports the hypothesis of a common source outbreak, linked to Nile river cruises. The outbreak also suggests the need to consider an intensification of the vaccination policy for travellers to hepatitis A endemic countries.
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Affiliation(s)
- E Robesyn
- Flemish Agency for Care and Health, Department of Public Health Surveillance, Infectious Disease Control Unit, Brussels, Belgium.
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Archilla JFR, Cuevas J, Alba MD, Naranjo M, Trillo JM. Discrete Breathers for Understanding Reconstructive Mineral Processes at Low Temperatures. J Phys Chem B 2006; 110:24112-20. [PMID: 17125383 DOI: 10.1021/jp0631228] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reconstructive transformations in layered silicates need a high temperature in order to be observed. However, very recently, some systems have been found where transformation can be studied at temperatures 600 degrees C below the lowest experimental results previously reported, including sol-gel methods. We explore the possible relation with the existence of intrinsic localized modes, known as discrete breathers. We construct a model for nonlinear vibrations within the cation layer, obtain their parameters, and calculate them numerically, obtaining their energies. Their statistics show that, although there are far less breathers than phonons, there are much more above the activation energy, making them good candidates to explain the reconstructive transformations at low temperatures.
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Affiliation(s)
- J F R Archilla
- Grupo de Física No Lineal, Universidad de Sevilla, Departamento de Física Aplicada I, ETSI InformAtica, Avenida Reina Mercedes, s/n. 41012-Sevilla, Spain.
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Bofill M, Almirall E, McQuaid A, Peña R, Ruiz-Hernandez R, Naranjo M, Ruiz L, Clotet B, Borràs FE. Differential expression of the cytokine receptors for human interleukin (IL)-12 and IL-18 on lymphocytes of both CD45RA and CD45RO phenotype from tonsils, cord and adult peripheral blood. Clin Exp Immunol 2005; 138:460-5. [PMID: 15544623 PMCID: PMC1809243 DOI: 10.1111/j.1365-2249.2004.02651.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 01/14/2023] Open
Abstract
The objective of this study was to demonstrate the variable expression of cytokine receptors on naive versus memory human CD4+ T cell subpopulations in tonsillar tissue, cord blood and adult blood. We prove that the receptors for both interleukin (IL)-12 and IL-18 are expressed exclusively on memory T cells. This observation was seen not only on the CD45RO+ memory T cells but also on a significant percentage of the CD45RA+, CD62L-, CD27- and CCR7- populations. Furthermore, CD45RA+ CD62L+, CD27+ or CCR7+ CD4+ T cells that expressed IL-12Rbeta1 and IL-18Ralpha did not express CD31, a marker for recent thymic emigrants. We reveal that cord blood lymphocytes do not express IL-12Rbeta1 whereas IL-18Ralpha expression was detected at low levels. Importantly, the IL-12Rbeta2 signalling chain, which is absent in all resting T cells, was up-regulated in both CD45RA+ and CD45RO+ T cells as a result of stimulation with anti-CD3 and anti-CD28 in vitro. This observed up-regulation was, however, restricted to 80% of the total CD4+ population. Finally, a very small proportion of the CD4+ CD45RO+ tonsillar T cells expressed the IL-12 and IL-18 receptors, thereby establishing the differential expression of these receptors between peripheral and tonsillar memory T cell subpopulations.
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Affiliation(s)
- M Bofill
- Institució Catalana de Recerca i Estudis Avançats, Badalona, Spain.
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Caravaca F, Arrobas M, Luna E, Naranjo M, Pizarro JL, Sánchez-Casado E. [Differences between the glomerular filtration rate estimated by the MDRD equation and the measurement of creatinine and urea clearance in unselected patients with terminal renal insufficiency]. Nefrologia 2003; 22:432-7. [PMID: 12497744] [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: 02/28/2023] Open
Abstract
From the results of the Modification of Diet in Renal Disease (MDRD) study, a prediction equation for a more accurate estimate of glomerular filtration rate (GFR), was developed. The present study ais to compare the GFR estimated by MDRD formula and that calculated by the average of creatinine and urea clearances in unselected patients with advanced renal failure. The study group consisted of 320 (163 males) with advanced renal failure not yet on dialysis. Their mean age was 63 +/- 14 years. Diabetic nephropathy was the most common etiology of renal failure (25%). Significant comorbidity was observed in 115 patients. Serum creatinine (Cr), urea and albumin were determined in all patients. Creatinine (Ccr) and urea clearance (Cu) were calculated on a 24-hour urine collection. The GFR was estimated by summing Ccr and Cu, and dividing by two (Ccr-Cu). THe clearances were corrected for a body surface area of 1.73 m2. The MDRD formula for the estimation of GFR included the following parameters: serum Cr, BUN, age, gender and serum albumin. Linear regression analysis and Bland-Altmann plot were utilized to establish the degree of correlation and agreement between both estimations of GFR. The percent differences between the two estimations of GFR was especially analyzed in those subgroups of patients which were not included in the MDRD study (patients older than 70 years, diabetics and those with comorbid conditions). The mean GFR estimated by Ccr-Cu and by MDRD formula were 10.04 +/- 3.10 ml/min and 10.55 +/- 3.60 ml/min, respectively (p < 0.0001). The two parameters correlated significantly (R = 0.76, p < 0.0001). GFR by the MDRD formula tended to overestimate the highest values of Ccr-Cu. The mean percent difference between both methods was 6.5 +/- 23.6. MDRD predictive equation overestimated significantly Ccr-Cu in patients older than 70 years (mean overestimation of 15%), males (10%), diabetics (10%), and mainly in patients with comorbidity (17%). In conclusion, the GFR estimated by MDRD formula is very similar to Ccr-Cu in young uremic patients without comorbidity. However, major discrepancies between these two methods could be observed in older patients, and mainly in those with comorbidity.
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Affiliation(s)
- F Caravaca
- Servicio de Nefrología Hospital Infanta Cristina 06080 Badajoz.
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Becerro AI, Naranjo M, Alba MD, Trillo JM. Structure-directing effect of phyllosilicates on the synthesis of y-Y2Si2O7. Phase transitions in Y2Si2O7. ACTA ACUST UNITED AC 2003. [DOI: 10.1039/b302276e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bernabeu-Wittel M, Naranjo M, Cisneros JM, Cañas E, Gentil MA, Algarra G, Pereira P, González-Roncero FJ, de Alarcón A, Pachón J. Infections in renal transplant recipients receiving mycophenolate versus azathioprine-based immunosuppression. Eur J Clin Microbiol Infect Dis 2002; 21:173-80. [PMID: 11957018 DOI: 10.1007/s10096-001-0684-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [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: 10/27/2022]
Abstract
Differences in the incidence, etiology, type, and outcome of infections occurring during the first 6 months after transplantation were evaluated in two consecutive cohorts of kidney recipients who received immunosuppressive regimens based on either azathioprine (plus antilymphocyte globulin, cyclosporine A, and prednisone) (ATG-AZA cohort) or mycophenolate-mofetil (plus cyclosporine A and prednisone) (MMF cohort). The overall incidence of infections in the two cohorts was similar (0.99+/-1.06 infections/patient in the MMF cohort and 1.04+/-0.99 in the ATG-AZA cohort, P=0.3), as was the incidence of bacterial and fungal infections. In patients who received mycophenolate, cytomegalovirus disease occurred at a higher incidence (0.3+/-0.54 vs. 0.1+/-0.34 episodes/patient, P=0.005) and affected the upper gastrointestinal tract more frequently (0.21+/-0.48 vs. 0.025+/-0.16 episodes of cytomegalovirus ulcerative esophagitis, gastritis, or duodenitis per patient; P=0.001). A nonsignificant trend toward a higher recipient survival for patients receiving mycophenolate was noted (100% vs. 95%, P=0.07). In multivariate analysis, the following factors were independently associated with a higher risk of cytomegalovirus disease: the serostatus R-/D+ (seronegative recipients who received a kidney from a seropositive donor) (RR=35.7 [95%CI, 7.4-166.7]), treatment with mycophenolate (RR=10.4 [95%CI, 2.7-38.4]), and the development of any episodes of acute rejection (RR=10.1 [95%CI, 2.5-41.6]). These data show that kidney recipients receiving mycophenolate have a higher incidence of cytomegalovirus disease, mainly affecting the upper gastrointestinal tract, compared to those receiving azathioprine-based immunosuppression.
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Affiliation(s)
- M Bernabeu-Wittel
- Service of Infectious Diseases, Virgen del Rocío University Hospital, Avenida Manuel Siurot s/n, 41013 Seville, Spain.
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Jiménez G, Naranjo M, de Alarcón A, Prieto J. [A proliferative syndrome and venous thrombosis]. An Med Interna 2000; 17:559-60. [PMID: 11109656] [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: 02/18/2023]
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Camacho FM, Moreno JC, Murga M, Proaño J, Cantillana J, Naranjo M, Martínez-Sahuquillo A, Macher G, Romero F. Malignant fibrous histiocytoma of the scalp. Multidisciplinary treatment. J Eur Acad Dermatol Venereol 1999; 13:175-82. [PMID: 10642053] [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: 02/15/2023]
Abstract
BACKGROUND Malignant fibrous histiocytomas (MFH) are uncommon in the skin, and even less frequent on the scalp. On the scalp they are often very difficult to excise and it is even more difficult to close the resulting wound. OBJECTIVE To review all malignant fibrous histiocytomas diagnosed and treated in our Department during the past 6 years, and to describe the multidisciplinary procedure employed to treat one special case of aggressive malignant fibrous histiocytoma on the scalp that recurred twice. RESULT Malignant fibrous histiocytomas represent 0.01% of malignant cutaneous tumors in our area. The immediate results after a multidisciplinary treatment performed on a recurrent malignant fibrous histiocytoma located on the scalp were excellent, but recurrence was observed 6 months later. Two years later we have also treated another case of MFH on the scalp. The same surgical technique was performed, but the patient received high-dose-methotrexate-based neoadjuvant chemotherapy (HD-MTX). One year later, this patient is still alive and no signs of recurrence have been detected. CONCLUSION When malignant fibrous histiocytoma occurs on the scalp it must be treated immediately by means of an excision with a large peripheral edge of 2 cm from the visual or CAT limits of the lesion, since the first treatment must be definitive.
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Affiliation(s)
- F M Camacho
- Department of Medical-Surgical Dermatology and Venereology, Hospital Universitario Virgen Macarena, Facultad de Medicina, Sevilla, Spain.
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Gentil MA, Rocha JL, Rodríguez-Algarra G, Pereira P, López R, Bernal G, Muñoz J, Naranjo M, Mateos J. Impaired kidney transplant survival in patients with antibodies to hepatitis C virus. Nephrol Dial Transplant 1999; 14:2455-60. [PMID: 10528672 DOI: 10.1093/ndt/14.10.2455] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.5] [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: 11/13/2022] Open
Abstract
BACKGROUND With a few exceptions, most published studies do not show an influence of antibodies to the hepatitis C virus (HCV) on the success of a kidney transplant. METHODS We studied all our renal transplant recipients who had received kidneys from cadaver donors (n = 335) and had been treated with quadruple immunosuppression (steroids, azathioprine, and antilymphocyte antibodies, followed by cyclosporin). We had information on the status of the hepatitis C antibodies before and/or after the transplant in 320 cases (95.5%; in 300, pre-transplant). Patients with HCV antibodies before and/or after the transplant were considered to be HCV positive (HCV+). RESULTS The HCV+ patients had more time in dialysis and a greater number of transfusions, hyperimmunized cases, and re-transplants. The evolution in the first post-transplant year was similar in both groups, but afterwards, the HCV+ patients had proteinuria more often as well as worse kidney function. The survival rate of the graft was significantly less in the HCV+ cases: 90.6, 68.3 and 51.0% at respectively 1, 5 and 10 years, compared with 91.5, 84.7 and 66.5% in HCV-patients (P<0.01). The patient survival rate was: 96.4, 87.0, and 71.9% in the HCV+ patients at 1, 5, and 10 years, compared with 98.2, 96.0 and 90.0% in the HCV- cases respectively (P<0.01). The differences remained the same in stratified studies according to time spent in dialysis or pre/post-transplant evolution of HCV antibodies, even when immunologically high-risk patients were excluded. In multivariant analysis, the presence of HCV antibodies acted as a independent prognostic factor for the survival of the kidney and the patient: 3.0 (1.8-5.0) and 3.1 (1.2-7.8) odds-ratio (95% of the confidence interval), respectively. The main cause of death among HCV+ patients was cardiovascular; there was no apparent increase in mortality rate due to infections or chronic liver disease. The loss of organs was mainly due to chronic nephropathy or death with a functioning kidney. CONCLUSION The presence of hepatitis C antibodies, before or after transplantation, is associated with a worse long-term survival rate for both the patient and the transplanted kidney in our patients treated with quadruple therapy.
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Affiliation(s)
- M A Gentil
- Servicio de Nefrología, Hospital Universitario Virgen del Rocío, Sevilla, Spain
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McClean SP, Lee JL, Sim TC, Naranjo M, Grant JA. Intermittent breathlessness. Ann Allergy 1989; 63:486-8. [PMID: 2596756] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- S P McClean
- Department of Internal Medicine, University of Texas Medical Branch, Galveston
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