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Vallejo C, Rosell A, Xicoy B, García C, Albo C, Polo M, Jarque I, Esteban B, Codesido ML. A multicentre ambispective observational study into the incidence and clinical management of aplastic anaemia in Spain (IMAS study). Ann Hematol 2024; 103:705-713. [PMID: 38175253 DOI: 10.1007/s00277-023-05602-x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
Aplastic anemia (AA) is a rare, life-threatening hematological disease, with a poorly defined incidence. As the data available on AA varies substantially worldwide, a multicenter, ambispective, observational study was carried out between 2010 and 2019 to assess the incidence, clinical management and survival of AA at seven Spanish hospitals. The incidence of AA was 2.83 per million inhabitants per year, consistent with that reported previously in Europe, with a median age at diagnosis of 61 years-old (range 12-86), and a similar number of males and females. The initial diagnosis was severe or very severe AA in 55.8% of cases and 93.7% required transfusion. The most frequent first line therapy was anti-thymocyte globulin (ATG) plus cyclosporin A (CsA, 44.2%), followed by other CsA-based regimes (46.3%), with hematopoietic stem cell transplantation an infrequent 1st line therapy. The 6-month response rate was 68.2%, which then increased over a median follow-up of 3.9 years. The 5-year overall survival (5OS) was 73.6%, similar in severe (78.6%) and very severe AA patients (74.6%) but lower in moderate AA (MAA) patients (68.4%). The 5OS was 100% in 0-25 year-old patients but dropping to 58.3% in patients ≥ 60 years-old. At the last contact, 75.8% of the patients were alive. In conclusion, the incidence, characteristics and management of AA in our study are consistent with that reported previously. In terms of survival, although the global long-term OS rate was good, there is room for improvement, particularly in older patients. Finally, what appears to be a worse long-term survival of MAA patients, as reported previously, reinforces the importance of not underestimating this condition when diagnosed as MAA.
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Affiliation(s)
- Carlos Vallejo
- Complejo Asistencial Universitario de Salamanca, Salamanca, Spain.
- Hospital Universitario Donostia, San Sebastián, Spain.
- PETHEMA Cooperative Group, Madrid, Spain.
- Instituto de Investigación Sanitaria Biodonostia, Donostia-San Sebastián, Spain.
| | - Ana Rosell
- Hospital Universitario Virgen de La Victoria, Málaga, Spain
| | - Blanca Xicoy
- Institut Català d'Oncologia, Hospital Universitari Germans Trias i Pujol, Josep Carreras Leukemia Research Institute, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Carmen García
- Hospital General Universitario de Alicante, Alicante, Spain
| | - Carmen Albo
- Hospital Universitario Álvaro Cunqueiro, Vigo, Spain
| | - Marta Polo
- Hospital Clínico Universitario San Carlos, Madrid, Spain
| | | | - Brígida Esteban
- Instituto de Investigación Sanitaria Biodonostia, Donostia-San Sebastián, Spain
| | - M Lorena Codesido
- Instituto de Investigación Sanitaria Biodonostia, Donostia-San Sebastián, Spain
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Sobas M, Knopinska-Posluszny W, Piątkowska-Jakubas B, García-Álvarez F, Díez MEA, Caballero M, Martínez-Cuadrón D, Aguiar E, González-Campos J, Garrido A, Algarra L, Salamero O, de la Serna J, Sayas MJ, Perez-Encinas MM, Vives S, Vidriales B, Labrador J, Prado AI, Celebrin L, Mayer J, Brioso J, de Laiglesia A, Bergua JM, Amigo ML, Rodriguez-Medina C, Polo M, Pluta A, Cichocka E, Skarupski M, Sanz MA, Wierzbowska A, Montesinos P. Incidence, risk factors, and outcomes of second neoplasms in patients with acute promyelocytic leukemia: the PETHEMA-PALG experience. Ann Hematol 2024; 103:451-461. [PMID: 38110588 PMCID: PMC10799093 DOI: 10.1007/s00277-023-05582-y] [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: 07/29/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023]
Abstract
The most important challenges in acute promyelocytic leukemia (APL) is preventing early death and reducing long-term events, such as second neoplasms (s-NPLs). We performed a retrospective analysis of 2670 unselected APL patients, treated with PETHEMA "chemotherapy based" and "chemotherapy free" protocols. Only de novo APL patients who achieved complete remission (CR) and completed the three consolidation cycles were enrolled into the analysis. Out of 2670 APL patients, there were 118 (4.4%) who developed s-NPLs with the median latency period (between first CR and diagnosis of s-NPL) of 48.0 months (range 2.8-231.1): 43.3 (range: 2.8-113.9) for s-MDS/AML and 61.7 (range: 7.1-231.1) for solid tumour. The 5-year CI of all s-NPLs was of 4.43% and 10 years of 7.92%. Among s-NPLs, there were 58 cases of s-MDS/AML, 3 cases of other hematological neoplasms, 57 solid tumours and 1 non-identified neoplasm. The most frequent solid tumour was colorectal, lung and breast cancer. Overall, the 2-year OS from diagnosis of s-NPLs was 40.6%, with a median OS of 11.1 months. Multivariate analysis identified age of 35 years (hazard ratio = 0.2584; p < 0.0001) as an independent prognostic factor for s-NPLs. There were no significant differences in CI of s-NPLs at 5 years between chemotherapy-based vs chemotherapy-free regimens (hazard ratio = 1.09; p = 0.932). Larger series with longer follow-up are required to confirm the potential impact of ATO+ATRA regimens to reduce the incidence of s-NPLs after front-line therapy for APL.
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Affiliation(s)
- Marta Sobas
- Department of Hematology, Blood Neoplasm and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland.
| | | | | | | | | | - Mar Caballero
- Hospital Insular de Las Palmas, Las Palmas de Gran Canaria, Spain
| | | | | | | | | | | | | | | | | | | | - Susana Vives
- Hospital U. Germans Trias i Pujol ICO, Badalona, Spain
| | - Belén Vidriales
- University Hospital of Salamanca (CAUSA/IBSAL) and Center for Biomedical Research in Network of Cancer (CIBERONC), Salamanca, Spain
| | - Jorge Labrador
- Department of Hematology, Research Unit, Hospital Universitario de Burgos, Facultad de Ciencias de la Salud, Universidad Isabel I, Burgos, Spain
| | | | | | - Jiri Mayer
- University Hospital Brno, Masaryk University, Brno, Czechia
| | | | | | | | | | | | - Marta Polo
- Hospital Clínico San Carlos, Madrid, Spain
| | | | | | - Marek Skarupski
- Faculty of Pure and Applied Mathematics, Wrocław University of Science and Technology, Wroclaw, Poland
- Department of Mathematics and Computer Science, Eindhoven University of Technology, 5612, AZ, Eindhoven, The Netherlands
| | - Miguel A Sanz
- Hospital Universitario i Politècnico la Fe, Valencia, Spain
| | | | - Pau Montesinos
- Hospital Universitario i Politècnico la Fe, Valencia, Spain
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Ochoa-Grullón J, Guevara-Hoyer K, Pérez López C, Pérez de Diego R, Peña Cortijo A, Polo M, Mateo Morales M, Anguita Mandley E, Jiménez García C, Bolaños E, Íñigo B, Medina F, Rodríguez de la Peña A, Izquierdo Delgado C, de la Fuente Muñoz E, Mayol E, Fernández-Arquero M, González-Fernández A, Benavente Cuesta C, Sánchez-Ramón S. Combined Immune Defect in B-Cell Lymphoproliferative Disorders Is Associated with Severe Infection and Cancer Progression. Biomedicines 2022; 10:biomedicines10082020. [PMID: 36009567 PMCID: PMC9406016 DOI: 10.3390/biomedicines10082020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
B cell chronic lymphoproliferative diseases (B-CLPD) are associated with secondary antibody deficiency and other innate and adaptive immune defects, whose impact on infectious risk has not been systematically addressed. We performed an immunological analysis of a cohort of 83 B-CLPD patients with recurrent and/or severe infections to ascertain the clinical relevance of the immune deficiency expression. B-cell defects were present in all patients. Patients with combined immune defect had a 3.69-fold higher risk for severe infection (p = 0.001) than those with predominantly antibody defect. Interestingly, by Kaplan–Meier analysis, combined immune defect showed an earlier progression of cancer with a hazard ratio of 3.21, than predominantly antibody defect (p = 0.005). When B-CLPD were classified in low-degree, high-degree, and plasma cell dyscrasias, risk of severe disease and cancer progression significantly diverged in combined immune defect, compared with predominantly antibody defect (p = 0.001). Remarkably, an underlying primary immunodeficiency (PID) was suspected in 12 patients (14%), due to prior history of infections, autoimmune and granulomatous conditions, atypical or variegated course and compatible biological data. This first proposed SID classification might have relevant clinical implications, in terms of predicting severe infections and cancer progression, and might be applied to different B-CLPD entities.
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Affiliation(s)
- Juliana Ochoa-Grullón
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Kissy Guevara-Hoyer
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Cristina Pérez López
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Rebeca Pérez de Diego
- Laboratory of Immunogenetics of Human Diseases, IdiPAZ Institute for Health Research, 28046 Madrid, Spain
| | - Ascensión Peña Cortijo
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Marta Polo
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Marta Mateo Morales
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Eduardo Anguita Mandley
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Carlos Jiménez García
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Estefanía Bolaños
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Belén Íñigo
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Fiorella Medina
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Antonia Rodríguez de la Peña
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Carmen Izquierdo Delgado
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Eduardo de la Fuente Muñoz
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Elsa Mayol
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Miguel Fernández-Arquero
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
| | - Ataúlfo González-Fernández
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Celina Benavente Cuesta
- Department of Hematology, Institute of Laboratory Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Silvia Sánchez-Ramón
- Department of Clinical Immunology, Institute of Laboratory Medicine and IdISSC, Hospital Clínico San Carlos, Calle Profesor Martín Lagos SN, 28040 Madrid, Spain
- Correspondence: ; Tel.: +34-91-3303000 (ext. 3342); Fax: +34-91-3303879
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Martínez-Cuadrón D, Serrano J, Mariz J, Gil C, Tormo M, Martínez-Sánchez P, Rodríguez-Arbolí E, García-Boyero R, Rodríguez-Medina C, Martínez-Chamorro C, Polo M, Bergua J, Aguiar E, Amigo ML, Herrera P, Alonso-Domínguez JM, Bernal T, Espadana A, Sayas MJ, Algarra L, Vidriales MB, Vasconcelos G, Vives S, Pérez-Encinas MM, López A, Noriega V, García-Fortes M, Chillón MC, Rodríguez-Gutiérrez JI, Calasanz MJ, Labrador J, López JA, Boluda B, Rodríguez-Veiga R, Martínez-López J, Barragán E, Sanz MA, Montesinos P. Characteristics and Outcomes of Adult Patients in the PETHEMA Registry with Relapsed or Refractory FLT3-ITD Mutation-Positive Acute Myeloid Leukemia. Cancers (Basel) 2022; 14:cancers14112817. [PMID: 35681796 PMCID: PMC9179309 DOI: 10.3390/cancers14112817] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/26/2022] [Accepted: 05/31/2022] [Indexed: 02/01/2023] Open
Abstract
This retrospective study investigated outcomes of 404 patients with relapsed/refractory (R/R) FMS-like tyrosine kinase 3 (FLT3)-internal tandem duplication (ITD) acute myeloid leukemia (AML) enrolled in the PETHEMA registry, pre-approval of tyrosine kinase inhibitors. Most patients (63%) had received first-line intensive therapy with 3 + 7. Subsequently, patients received salvage with intensive therapy (n = 261), non-intensive therapy (n = 63) or supportive care only (n = 80). Active salvage therapy (i.e., intensive or non-intensive therapy) resulted in a complete remission (CR) or CR without hematological recovery (CRi) rate of 42%. More patients achieved a CR/CRi with intensive (48%) compared with non-intensive (19%) salvage therapy (p < 0.001). In the overall population, median overall survival (OS) was 5.5 months; 1- and 5-year OS rates were 25% and 7%. OS was significantly (p < 0.001) prolonged with intensive or non-intensive salvage therapy compared with supportive therapy, and in those achieving CR/CRi versus no responders. Of 280 evaluable patients, 61 (22%) had an allogeneic stem-cell transplant after they had achieved CR/CRi. In conclusion, in this large cohort study, salvage treatment approaches for patients with FLT3-ITD mutated R/R AML were heterogeneous. Median OS was poor with both non-intensive and intensive salvage therapy, with best long-term outcomes obtained in patients who achieved CR/CRi and subsequently underwent allogeneic stem-cell transplant.
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Affiliation(s)
- David Martínez-Cuadrón
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain; (B.B.); (R.R.-V.); (E.B.); (M.A.S.); (P.M.)
- Correspondence: ; Tel.: +34-96-1244925
| | - Josefina Serrano
- Hospital Universitario Reina Sofía and Instituto Maimónides de Investigación Biomédica Córdoba (IMIBIC), 14004 Córdoba, Spain;
| | - José Mariz
- IPO (Istituto Portugues Oncologia), 4200-072 Porto, Portugal;
| | - Cristina Gil
- Hospital General Universitario de Alicante, 03010 Alicante, Spain;
| | - Mar Tormo
- Hospital Clínico Universitario, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain;
| | - Pilar Martínez-Sánchez
- Hospital Universitario 12 de Octubre, Complutense University, i+12, CNIO, 28041 Madrid, Spain; (P.M.-S.); (J.M.-L.)
| | | | | | | | | | - Marta Polo
- Hospital Clínico San Carlos, 28040 Madrid, Spain;
| | - Juan Bergua
- Hospital San Pedro Alcántara, 10003 Cáceres, Spain;
| | | | - María L. Amigo
- Hospital General Universitario Morales Meseguer, 30008 Murcia, Spain;
| | - Pilar Herrera
- Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain;
| | | | - Teresa Bernal
- Hospital Universitario Central de Asturias, 33011 Asturias, Spain;
| | - Ana Espadana
- Hospital de Coimbra, 3400-091 Coimbra, Portugal;
| | - María J. Sayas
- Hospital Universitario Doctor Peset, 46017 Valencia, Spain;
| | - Lorenzo Algarra
- Hospital General Universitario de Albacete, 02006 Albacete, Spain;
| | - María B. Vidriales
- Department of Hematology, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), 37007 Salamanca, Spain; (M.B.V.); (M.C.C.)
| | | | - Susana Vives
- ICO-Hospital Germans Trias i Pujol, Badalona, José Carreras Leukemia Research Institute, Universitat Autònoma de Barcelona, 08916 Barcelona, Spain;
| | | | | | - Víctor Noriega
- Complejo Hospitalario Universitario A Coruña, 15006 La Coruna, Spain;
| | | | - María C. Chillón
- Department of Hematology, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), 37007 Salamanca, Spain; (M.B.V.); (M.C.C.)
| | | | | | | | - Juan A. López
- Complejo Hospitalario Ciudad de Jaén, 23007 Jaén, Spain;
| | - Blanca Boluda
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain; (B.B.); (R.R.-V.); (E.B.); (M.A.S.); (P.M.)
| | - Rebeca Rodríguez-Veiga
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain; (B.B.); (R.R.-V.); (E.B.); (M.A.S.); (P.M.)
| | - Joaquín Martínez-López
- Hospital Universitario 12 de Octubre, Complutense University, i+12, CNIO, 28041 Madrid, Spain; (P.M.-S.); (J.M.-L.)
| | - Eva Barragán
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain; (B.B.); (R.R.-V.); (E.B.); (M.A.S.); (P.M.)
| | - Miguel A. Sanz
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain; (B.B.); (R.R.-V.); (E.B.); (M.A.S.); (P.M.)
| | - Pau Montesinos
- Hospital Universitari i Politècnic La Fe, 46026 Valencia, Spain; (B.B.); (R.R.-V.); (E.B.); (M.A.S.); (P.M.)
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Vallejo C, Montesinos P, Polo M, Cuevas B, Morado M, Rosell A, Xicoy B, Díez JL, Salamero O, Cedillo Á, Martínez P, Rayón C. Rabbit antithymocyte globulin versus horse antithymocyte globulin for treatment of acquired aplastic anemia: a retrospective analysis. Ann Hematol 2015; 94:947-54. [DOI: 10.1007/s00277-015-2305-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 01/24/2015] [Indexed: 10/24/2022]
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Polo M, Alegre F, Funes HA, Blas-Garcia A, Victor VM, Esplugues JV, Apostolova N. Mitochondrial (dys)function - a factor underlying the variability of efavirenz-induced hepatotoxicity? Br J Pharmacol 2015; 172:1713-27. [PMID: 25411110 DOI: 10.1111/bph.13018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 10/31/2014] [Accepted: 11/10/2014] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE The non-nucleoside analogue reverse transcriptase inhibitor efavirenz is associated with hepatic toxicity and metabolic disturbances. Although the mechanisms involved are not clear, recent evidence has pinpointed a specific mitochondrial action of efavirenz accompanied by the induction of an endoplasmic reticulum (ER) stress/unfolded protein response in human hepatic cells. The aim of this study was to further investigate the involvement of this organelle by evaluating efavirenz's effects in cells lacking functional mitochondria (rho°) and comparing them with those of the typical mitotoxic agent rotenone, a standard complex I inhibitor, and the ER stress inducer thapsigargin. EXPERIMENTAL APPROACH Hep3B rho(+) and rho° cells were treated with clinically relevant concentrations of efavirenz, then mitochondrial function and cytotoxicity were studied using standard cell biology techniques. KEY RESULTS Efavirenz-treated rho° cells exhibited a substantial reduction in parameters indicative of mitochondrial interference, such as increased superoxide production, mitochondrial mass/morphology alterations and enhanced expression of LONP, a highly conserved mitochondrial protease. In line with these results, the cytotoxic effect (cell number, chromatin condensation, cell cycle alterations and induction of apoptosis) of efavirenz was less pronounced in Hep3B respiration-depleted cells than in wild-type cells. The effect of efavirenz was both similar and different from those of two distinct mitochondrial stressors, thapsigargin and rotenone. CONCLUSIONS AND IMPLICATIONS Cells lacking normal mitochondria (rho°) are less vulnerable to efavirenz. Our results provide further evidence that the hepatic damage induced by efavirenz involves acute interference with mitochondria and extend our knowledge of the response of mitochondria/ER to a stress stimulus.
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Affiliation(s)
- M Polo
- Departamento de Farmacología, Facultad de Medicina, Universitat de Valencia, Valencia, Spain; FISABIO-Hospital Universitario Dr Peset, Valencia, Spain
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Aguado JM, Vazquez L, Fernandez-Ruiz M, Villaescusa T, Ruiz-Camps I, Barba P, Silva JT, Batlle M, Solano C, Gallardo D, Heras I, Polo M, Varela R, Vallejo C, Olave T, Lopez-Jimenez J, Rovira M, Parody R, Cuenca-Estrella M, Zarzuela MP, Candel Gonzalez FJ, Amador PM, Mediavilla JD, Camps IR, Barba P, Castillo N, Martin MT, Soriano JA, Fernando IH, Castilla-Llorente C, Cesteros R, Rodriguez Mondejar MR, Vazquez L, Villaescusa T, Caballero D, Garcia JE, Garcia IG, de la Mano Gonzalez S, Fernandez Garcia-Hierro JM, Solano C, Tormo M, Navarro D, Angel Molla M, Vallejo C, Gonzalez AJ, Gonzalez S, Gonzalez AP, Palomo P, Porras RP, Batlle M, Gallardo D, Guardia Sanchez R, Rosario Varela M, Olave Rubio MT, Jimenez JL, Tarrats MR, Grande MSL, Fernandez-Aviles F, Aguado JM, Fernandez-Ruiz M, Silva JT, Cuenca-Estrella M, Buitrago MJ, Amador TM, Bernal-Martinez L. Serum Galactomannan Versus a Combination of Galactomannan and Polymerase Chain Reaction-Based Aspergillus DNA Detection for Early Therapy of Invasive Aspergillosis in High-Risk Hematological Patients: A Randomized Controlled Trial. Clin Infect Dis 2014; 60:405-14. [DOI: 10.1093/cid/ciu833] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [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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Redondo AM, Pomares H, Vidal MJ, Pascual MJ, Quereda B, Sancho JM, Polo M, López J, Conde E, Jarque I, Alonso N, Ramírez MJ, Fernández P, Sayas MJ, Requena MJ, Salar A, González JD, González-Barca E, Arranz R, Caballero D, Martín A. Impact of prior rituximab on outcomes of autologous stem-cell transplantation in patients with relapsed or refractory aggressive B-cell lymphoma: a multicentre retrospective Spanish group of lymphoma/autologous bone marrow transplant study. Br J Haematol 2013; 164:668-74. [PMID: 24274082 DOI: 10.1111/bjh.12676] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/18/2013] [Indexed: 12/22/2022]
Abstract
The use of highly effective rituximab-containing therapy for treating diffuse large B-cell lymphoma (DLBCL) makes it more difficult to salvage relapsed or refractory patients. Autologous stem-cell transplantation (ASCT) is the reference treatment for these patients, but the impact of previous exposure to rituximab on the subsequent results of ASCT remains unknown. We analysed 248 patients with relapsed or refractory DLBCL or grade 3B follicular lymphoma pre-treated with rituximab as part of first-line therapy (R+ group) who received ASCT, in comparison with a control group of 127 patients without previous exposure to rituximab (R- group). The complete remission (CR) rates were similar in both groups. Multivariate analysis identified age-adjusted International Prognostic Index at diagnosis, extranodal involvement and disease status at transplant, and the number of previous chemotherapy lines as independent factors with a negative influence on CR rate. Compared with R- patients, those in the R+ group had a significantly better progression-free survival (63% vs. 48% at 5 years) and overall survival (72% vs. 61% at 5 years). This observation was independent of other prognostic factors that affected these outcomes. In conclusion, ASCT is no less effective in patients with relapsed or refractory aggressive B-cell lymphoma pre-treated with first-line rituximab-containing therapy than in rituximab-naive patients.
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Affiliation(s)
- Alba M Redondo
- Hospital Universitario de Salamanca and IBSAL, Salamanca, Spain
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Polo M, Chiu D, Klucznik R, Diaz-Daza O. E-018 Intracranial stenting of a persistent primitive hypoglossal artery in a patient presenting with acute bilateral posterior circulation infarcts. J Neurointerv Surg 2011. [DOI: 10.1136/neurintsurg-2011-010097.84] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Villegas A, Ropero P, Anguita E, Hernández A, Polo M, González FA. Caracterización molecular de dos nuevas mutaciones de α° talasemia en 2 familias españolas (mutación --ED y --GP). Med Clin (Barc) 2011; 136:674-7. [DOI: 10.1016/j.medcli.2011.01.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 01/27/2011] [Accepted: 01/27/2011] [Indexed: 10/18/2022]
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Martin G, Villegas A, Gonzalez FA, Ropero P, Hojas R, Polo M, Mateo M, Salvador M, Benavente C. A Novel Mutation of the α2-Globin causing α+-Thalassemia: Hb Plasencia [α125(H8)Leu→Arg (α2). Hemoglobin 2010. [DOI: 10.1081/hem-58578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Crippa A, Magli MC, Robles F, Capoti A, Ferraretti AP, Gianaroli L, Gallina A, Bonaparte E, Moretti M, Colpi GM, Nerva F, Contalbi G, Vacalluzzo L, Tabano S, Grati FR, Gazzano G, Sirchia SM, Simoni G, Miozzo M, Handyside A, Gabriel A, Thornhill AR, Clemente E, Reitter C, Affara N, Griffin DK, Macek M, Feldmar P, Kluckova H, Hrehorcak M, Diblik J, Paulasova P, Turnovec M, Vilimova S, Macek M, Fontes L, Haddad L, Borges E, Iaconelli A, Braga DPAF, Vianna-Morgante AM, Komsky A, Kasterstein E, Komarovsky D, Bern O, Maslansky B, Kaplan T, Raziel A, Friedler S, Gidoni Y, Ben-Ami I, Ron-El R, Strassburger D, Maggiulli R, Monahan D, Neri QV, Hu JCY, Rosenwaks Z, Palermo GD, Beyazyurek C, Ekmekci GC, Tac HA, Ajredin N, Verlinsky O, Fiorentino F, Kahraman S, Camp M, Hesters L, Le Lorc'h M, Frydman R, Romana S, Frydman N, Perez Sanz J, Matorras R, Arluzea J, Romin Y, Bilbao J, Gonzalez-Santiago N, Manova-Todorova K, Koff A, Rivera-Pomar JM, de la Hoz-Torres C, Xanthopoulou L, Ghevaria H, Mantzouratou A, Serhal P, Doshi A, Delhanty JD, Ye Y, Qian Y, Jin F, Munne S, Gutierrez C, Wagner C, Hill D, Wiemer K, Fischer J, Kaplan B, Danzer H, Surrey M, Opsahl M, Hladikova B, Sobek A, Tkadlec E, Kyselova K, Sobek A, Nichi M, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Colturato SS, Setti AS, Figueira RCS, Braga DPAF, Iaconelli A, Borges E, Rubio C, Domingo J, Rodrigo L, Mercader A, De los Santos MJ, Pehlivan T, Bosch E, Fernandez M, Simon C, Remohi J, Pellicer A, Perez-Nevot B, Lendinez AM, Palomares AR, Polo M, Rodriguez A, Reche A, Ruiz-Galdon M, Reyes-Engel A, Knauff EAH, Blauw HM, Kok K, Wijmenga C, Fauser BCJM, Franke L, Paffoni A, Paracchini V, Ferrari S, Restelli L, Coviello DA, Scarduelli C, Seia M, Ragni G, Aoyama N, Takehara Y, Kawachiya S, Kuroda T, Kawasaki N, Yamadera R, Suzuki T, Kato K, Kato O, Xu QH, Zhang ZG, Zhou P, Wei ZL, Huang DK, Xing Q, Cao YX, Fauque P, Ripoche MA, Tost J, Journot L, Jouannet P, Vaiman D, Dandolo L, Jammes H, Hellani A, Elsheikh A, Abuamero KK, Elakoum S, Palomares AR, Lendinez AM, Perez-Nevot B, Martinez F, Perez de la Blanca E, Ruiz-Galdon M, Reyes-Engel A, Sobek A, Hladikova B, Tkadlec E, Koutna O, Cepelak T, Kyselova K, Sobek AJR. Posters * Reproductive Genetics (PGD/PGS). Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.534] [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: 11/13/2022] Open
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Ropero P, Villegas A, Muñoz J, Briceño O, Mora A, Salvador M, Polo M, González FA. First Spanish Case Of Thalassemia Major Due to a Compound Heterozygosity for the IVS-II-848 (C→A) And Codon 39 (C→T) Mutations Of The β-Globin Gene. Hemoglobin 2009; 30:15-21. [PMID: 16540410 DOI: 10.1080/03630260500453875] [Citation(s) in RCA: 1] [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: 10/24/2022]
Abstract
This report describes the first case in Spain of a severe form of beta-thalassemia (thal) due to a compound heterozygosity for the IVS-II-848 (C --> A) and the nonsense codon 39 (C --> T) mutations. Five members of a family from Cadiz (southern Spain) were studied. The proband was an 8-year-old girl diagnosed as anemic at the age of 13 months. Her father had the codon 39 (C --> T) mutation and her mother the C --> A change at nucleotide (nt) 848 of IVS-II. Haplotype analysis showed that the proband was a compound heterozygote for haplotypes I [+ --> + +] and VII [+ --> +]. This is the first description in Spain of the IVS-II-848 (C --> A) mutation. It appears, from restriction fragment length polymorphism (RFLP) analysis, that this mutation has a different origin in the various populations, where it was found. This observation shows that in this case the association of a beta(0)- and a beta(+)-thal mutation does not lead to a thalassemia intermedia but to a severe thalassemia with very low hemoglobin (Hb) levels. From a therapeutic point of view, early introduction of a transfusion regimen may improve the clinical picture of these children, allowing for better development and growth.
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Affiliation(s)
- Paloma Ropero
- Servicio de Hematología y Hemoterapia, Hospital Clínico San Carlos de Madrid, Madrid, España
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Ropero P, Fernández-Lago C, Villegas A, Polo M, Mateo M, Mora A, González FA. Hb LA Coruña [β38(C4)Thr→Ile]: A New Hemoglobin Variant Leading to Familial Polycythemia. Hemoglobin 2009; 30:379-83. [PMID: 16840229 DOI: 10.1080/03630260600755666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Hb La Coruña [beta38(C4)Thr --> Ile] is a new hemoglobin (Hb) variant that has an increased oxygen affinity. Clinically, this Hb leads to erythrocytosis. Hb La Coruña is an electrophoretically silent variant that can be detected by reversed phase high performance liquid chromatography (HPLC) and characterized by DNA sequencing. The patient was a 22-year-old Spanish male whose family lived in La Coruña, in the northwest of Spain. His mother was also a carrier.
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Affiliation(s)
- Paloma Ropero
- Servicio de Hematología y Hemoterapia del Hospital Clínico San Carlos, Madrid, España
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González FA, Ropero P, de la Iglesia S, Polo M, Benavente C, Villegas A. [Hemoglobin Stanleyville II [alpha78(EF7)Asn --> Lys]. First case described in Spain]. Med Clin (Barc) 2008; 131:463-5. [PMID: 18928738 DOI: 10.1157/13126956] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Structural hemoglobinopathies are the result of mutations in the genes of globin, which determine a qualitative alteration in the expression of these genes. Most alterations do not originate any significant change, and correspond to silent or asymptomatic forms. This study proves a new case of hemoglobin (Hb) Stanleyville II. PATIENTS AND METHOD The propositus was a 72 years old Caucasian woman, from the Canary Islands. Her hematological data were: Hb 14.3 g/dl; hematocrit 44.4%; mean corpuscular volume 85.8 fl; mean corpuscular hemoglobin 27.7 pg; red cell distribution width 15.1%; reticulocytes 1.2%; HbA2 3.1% and HbF 1.6%. Electrophoretic studies in cellulose acetate electrophoresis at alkaline pH = 8.6 and isoelectrofocusing showed an anomalous Hb similar to HbS. The anomalous Hb did not appear in agar citrate electrophoresis (pH 6.0). The analysis by reverse phase high performance liquid chromatography for globin chains showed an X anomalous after A. RESULTS Molecular analysis by sequentiation of the polymerase chain reaction products genes 1 and 2 showed the mutation AAC --> AAA at CD78 of second gene 2 in heterozygote state, which leads the change of asparagine to lysine. CONCLUSIONS The substitution of an amino acid with neutral charge like asparagine for another one with positive charge like lysine in the segment EF, which corresponds to the external surface of the tertiary structure of the chain of globin, determines the change of charge in the chain. This allows an easy differentiation by electrophoretic and chromatographic methods. Nevertheless, owing to its position in the chain, which is not critique for the stability, solubility and affinity for the oxygen allows for silent or asymptomatic forms. The Hb Stanleyville II had been described before in black families of the Congo, Uganda, USA, Alsace and Brazil. This case represents the first case described in Spain.
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González Fernández FA, Villegas A, Ropero P, Carreño MD, Anguita E, Polo M, Pascual A, Henández A. Haemoglobinopathies with high oxygen affinity. Experience of Erythropathology Cooperative Spanish Group. Ann Hematol 2008; 88:235-8. [PMID: 18818920 DOI: 10.1007/s00277-008-0581-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2007] [Accepted: 07/24/2008] [Indexed: 11/28/2022]
Abstract
Haemoglobinopathies are the world's most frequently found monogenic disorders. In the cases with high oxygen affinity, the decrease in the liberation of the oxygen determines a secondary erythrocytosis. In this work, we present 17 unrelated families of Caucasian race and of Spanish origin, with ten variants of haemoglobin or haemoglobinopathies with high oxygen affinity which were diagnosed in our laboratory. Of the ten haemoglobinopathies, in four (the Hb San Diego, the Hb Johnstown, the Hb Malmö and the Hb Columbia-Missouri), the change of amino acid affects zones of the contact alpha(1)beta(2); in two variants (the Hb Strasbourg and the Hb Syracuse), it affects the unions with 2,3-DPG in the central cavity; in the other two (the Hb Badalona and the Hb La Coruña), the cavity of contact with the group haem is affected; in one (Hb Bethesda), it affects the zone of contact alpha(1)beta(1;) and in one (Hb Olympia), the position 20 of the chain in the helix B in the surface of the protein is affected. In all cases, the change of amino acid, though of different form, facilitates that the quaternary structure of the haemoglobin becomes stable in its relaxed configuration so the transfer of oxygen and the P(50) value are decreased. All cases were sent to our laboratory because of shown erythrocytosis. In the majority of them, the diagnosis was done during an analysis of routine or for being relatives of the first ones.
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Tavazzi S, Raimondo L, Silvestri L, Spearman P, Camposeo A, Polo M, Pisignano D. Dielectric tensor of tetracene single crystals: The effect of anisotropy on polarized absorption and emission spectra. J Chem Phys 2008; 128:154709. [DOI: 10.1063/1.2897436] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tavazzi S, Miozzo L, Papagni A, Raimondo L, Silvestri L, Spearman P, Camposeo A, Polo M, Pisignano D. Exciton self-trapping in tetrafluoro-dimethyl-aminoacridine single crystals. J Chem Phys 2007; 126:234501. [PMID: 17600419 DOI: 10.1063/1.2735622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The UV-visible optical spectra of 1,2,3,4-tetrafluoro-7-(N,N)dimethyl-amino-acridine single crystals are reported. The results are discussed on the basis of the molecular transitions and crystal packing in the framework of the theory of molecular excitons under a fluctuating potential field due to dynamic disorder. A strong local geometry distortion is demonstrated by applying the Urbach rule to the absorption tails, which is the amplitude of the local potential fluctuation being larger than the intermolecular transfer energy. The lineshape and linewidth of the emission band and its temperature dependence give further evidence of exciton self-trapping.
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Affiliation(s)
- S Tavazzi
- Dipartimento Scienza dei Materiali, Università di Milano Bicocca, Via Cozzi 53, 1-2 0125 Milano, Italy
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Ropero P, Llorente L, González FA, Briceño O, Mateo M, Polo M, Villegas A. Incidence of the HFE gene mutations in a cohort of non-Spanish origin neonates in Madrid. Ann Hematol 2007; 86:459-62. [PMID: 17279416 DOI: 10.1007/s00277-007-0264-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Accepted: 01/18/2007] [Indexed: 11/26/2022]
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Ropero P, Briceño O, Mateo M, Polo M, Mora A, González FA, Villegas A. Frequency of the C282Y and H63D mutations of the hemochromatosis gene (HFE) in a cohort of 1,000 neonates in Madrid (Spain). Ann Hematol 2006; 85:323-6. [PMID: 16520984 DOI: 10.1007/s00277-006-0094-4] [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] [Received: 12/28/2005] [Accepted: 01/13/2006] [Indexed: 10/24/2022]
Abstract
For centuries in Europe, population movements have contributed to ethnic groups, cultures, and consequently, inheritance mixing. There are certain genetic diseases such as hereditary hemochromatosis whose distribution is directly related to the population movements. The objective of the present investigation was to determine the C282Y and H63D mutation frequency of the HFE gene in a cohort study of 1,000 neonates in the Community of Madrid (Spain), thus contributing to the HFE gene mutations distribution research in Europe and establishing the origin of the mutations in Spain. The allelic frequency of C282Y mutation was 1.7% (CI 95% 1.1-2.3) and the H63D allele was present in 16.4% of chromosomes (CI 95% 14.8-18). In Spain, the presence of C282Y mutation and its distribution could be due more to Celtic than to Viking legacy, whereas it is assumed that the one in relation to the H63D variant occurred in the Basque Country during the Paleolithic Period.
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Affiliation(s)
- Paloma Ropero
- Servicio de Hematología y Hemoterapia, Hospital Clinico San Carlos, Madrid, Spain
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Ropero P, Murga MJ, González FA, Polo M, Benavente C, Salvador M, Villegas A. The first case of Hb E-Saskatoon associated with Hb Lepore-Baltimore found in Spain. Hemoglobin 2005; 29:215-9. [PMID: 16114185 DOI: 10.1081/hem-200066321] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hb E-Saskatoon [beta22(B4)Glu-->Lys] does not cause any clinical symptoms in the heterozygous state. The homozygous state shows moderate phenotype expression. It has also been detected in association with beta-thalassemia. We present the first case of Hb E-Saskatoon associated with Hb Lepore-Baltimore. This unusual combination of mutations does not aggravate the clinical picture, as only microcytosis and hypochromia have been observed. Hb E-Saskatoon can only be correctly characterized by ion exchange high performance liquid chromatography (HPLC) or by DNA sequencing.
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Affiliation(s)
- Paloma Ropero
- Servicio de Hematología y Hemoterapia del Hospital Clínico San Carlos, Madrid, Spain
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Martin G, Villegas A, González FA, Ropero P, Hojas R, Polo M, Mateo M, Salvador M, Benavente C. A Novel Mutation of the α2-Globin Causing α -Thalassemia: Hb Plasencia [α125(H8)Leu→Arg (α2). Hemoglobin 2005. [DOI: 10.1081/hem-200058578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ataulfo González F, Blázquez C, Ropero P, Briceño O, Alaez C, Polo M, Benavente C, Mateo M, Peña A, Villegas A. Asociación de hemoglobinopatía S y alfatalasemia. Análisis de 45 casos. Med Clin (Barc) 2005; 124:726-9. [PMID: 15919031 DOI: 10.1157/13075443] [Citation(s) in RCA: 9] [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: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Hemoglobin S (HbS) alpha-thalassemia together with ss-thalassemia and hemoglobins C, E and D are named common hemoglobinopathies. In this study, we analyzed the frequency of the association between alpha-thalassemia and HbS and its phenotypic expression. PATIENTS AND METHOD Since January 1995 to March 2003 we studied 83 cases of HbS, which were diagnosed by electrophoretic and chromatographic criteria. The molecular study was carried out by Southern blot with the restriction enzymes Bam HI and Bgl II and a (1.5 Kb Pst) and z (1.8 Kb Sac Y) probes. RESULTS 45 cases (54.2%) had a-thalassemia (36 -alpha3,7/aa; 1-alpha4,2/alphaalpha; 6 -alpha3,7/-alpha3,7; 1-alpha4,2/-alpha4,2); 36 had not alpha-thalassemia and in two cases there were a triplication of a genes. The patients with HbS heterozygote associated with alpha-thalassemia showed a percentage of HbS (p < 0.0001), CMV (p = 0.004), MCH (p = 0.002) and MCHC (p = 0.02) significantly lower than the cases of HbS without this association. However, no differences between both groups were found with regard to the rest of parameters analyzed (Hb p = 0.56; PVC p = 0.84; RDW p = 0.06; Reticulocytes p = 0.26; HbF p = 0.76; HbA2 p = 0.13). In the cases with a severe form of disease (HbS homozygote; HbS/Hb C; HbS/beta-thalassemia), patients with alpha-thalassemia had a number of leukocytes that was significantly lower than that of patients without alpha-thalassemia (p = 0.034). CONCLUSION An association between HbS and alpha-thalassemia was common (> 50%). Screening for this association is of great interest because the clinical expression in the cases of HbS homozigote will be modulated. This association must be suspected in cases of homozygous HbS in which levels of HbS are lower than expected.
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Martin G, Villegas A, González FA, Ropero P, Hojas R, Polo M, Mateo M, Salvador M, Benavente C. A novel mutation of the alpha2-globin causing alpha(+)-thalassemia: Hb Plasencia [alpha125(H8)Leu--Arg (alpha2). Hemoglobin 2005; 29:113-7. [PMID: 15921163] [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: 05/02/2023]
Abstract
We describe, in a Spanish family with moderate microcytosis and hypochromia, a novel nondeletional alpha-thalassemia (thal) mutation localized on the alpha2-globin gene. DNA sequencing revealed a point mutation at codon 125 (CTG --> CGG) in the heterozygous state, that was confirmed by restriction analysis. The resulting variant, which causes a nondeletional alpha-thal, was named Hb Plasencia [alpha125(H8)Leu --> Arg (alpha2)] after the place of residence of the affected family.
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Affiliation(s)
- Guillermo Martin
- Servicio de Hematología y Hemoterapia del Hospital Virgen del Puerto, Plasencia, Spain
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Gonzalez de Llano D, Herraiz T, Polo M. Peptides. Food Science and Technology 2004. [DOI: 10.1201/b11081-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Polo M, Gómez-Noya G, Quintana JB, Llompart M, García-Jares C, Cela R. Development of a Solid-Phase Microextraction Gas Chromatography/Tandem Mass Spectrometry Method for Polybrominated Diphenyl Ethers and Polybrominated Biphenyls in Water Samples. Anal Chem 2004; 76:1054-62. [PMID: 14961738 DOI: 10.1021/ac030292x] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.8] [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
Solid-phase microextraction has been applied for the first time to the determination of trace concentrations of some brominated flame-retardant compounds (BFRs) in water samples. For the development of the method, six polybrominated diphenyl ethers and two polybrominated biphenyls were considered as target analytes. The factors expected to influence the extraction process are fully discussed. Quantification has been performed by gas chromatography/tandem mass spectrometry using an ion trap mass analyzer. This is also the first time that tandem mass spectrometry is applied with these analytes. Unlike conventional methods for BFR analysis, which involve solvent extraction and several cleanup steps before gas chromatography, the proposed method uses headspace extraction and hard contamination of the chromatographic system is prevented. In addition, tandem mass spectrometry provides selectivity and sensitivity in the detection process. The method performs well achieving good linearity (R(2) > 0.997), precision, and detection limits (S/N = 3) ranging from 7.5 to 190 pg/L. The method has been applied to a variety of water samples.
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Affiliation(s)
- M Polo
- Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Química, Instituto de Investigación y Análisis Alimentario, Universidad de Santiago de Compostela, Avda de las Ciencias s/n, 15706 Santiago de Compostela, Spain
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Abstract
In order to investigate the effect of a competitive inhibitor of the HMG-CoA reductase on tumor growth and cholesterol homeostasis of host and non-host mice, we maintained a human lung mucoepidermoid carcinoma (HLMC) in nude mice, treating these animals with Simvastatin for 33 days. The drug increased the total activity of hepatic HMG-CoA reductase without affecting the cholesterolemia. Non-treated host animals presented lower serum, tissue and microsomal hepatic cholesterol than non-host animals. These differences disappeared when animals were treated with Simvastatin, though the induction of the reductase activity at mid-dark was higher in non-host than in host animals. Simvastatin produced no significant effects on both final tumor volume and body weight. Synthesis and cholesterol homeostasis restoration induced by liver and tumoral reductase would account for no effect on the HLMC growth after a long treatment with Simvastatin.
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Affiliation(s)
- M Polo
- Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP) y Area Ciencias Biológicas del Departamento de Introducción a la Medicina, Facultad de Cs. Médicas, UNLP-CONICET, La Plata, Argentina
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Bianchin A, Polo M, Cavarzerani C. [Intubating laryngeal mask airway (ILMA) in otorhinolaryngology surgery. A case of failure]. Minerva Anestesiol 2001; 67:727-30. [PMID: 11740420] [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: 02/22/2023]
Abstract
Intubating laryngeal mask airway (ILMA) is a very useful device for difficult airway management. The use of this device has not yet been studied in otorhinolaryngology surgery. The case of a 52-year-old man, weighing 104 kg, anesthetized for microlaryngoscopy due to aphonia occurred 6 months before, is reported. Traditional intubation was impossible. ILMA was easily positioned and the patient was ventilated. Intubation using ILMA was difficult and the operation postponed. Later, a bilateral false vocal chords hypertrophy was found. Impossible intubation using ILMA is a rare occurrence, less than 10% of cases. From previous evidence failed intubations are caused by anatomical anomalous formations, often predictables by clinical history. Blind intubation with ILMA is not, probably, the first alternative in these cases. Fiberoptic equipment intubation or use of ILMA with fiberoptic bronchoscope must be considered in these situations for possible better RESULTS. The use of ILMA in otorhinolarynogology surgery must be investigated with a specific study because there are only few experiences on this subject.
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Affiliation(s)
- A Bianchin
- U.O. Anestesia e Rianimazione, Azienda ULSS 8, Asolo, Presidio Ospedaliero di Montebelluna (TV), Italy.
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González FA, Anguita E, Mora A, Asenjo S, López I, Polo M, Villegas A. Deletion of BCR region 3' in chronic myelogenous leukemia. Cancer Genet Cytogenet 2001; 130:68-74. [PMID: 11672777 DOI: 10.1016/s0165-4608(01)00469-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The t(9;22)(q34;q11) produces the BCR/ABL fusion gene which codifies a 210 kb protein with a strong tyrosine kinase activity and is involved in cellular development and growth. Because this translocation is a reciprocal event, it could give rise to a second fusion gene, ABL-BCR, on the derivative 9q+. We analyzed the influence of the 3' M-BCR deletion on the clinical picture at diagnosis and disease outcome in 57 patients with a clinical diagnosis of CML. Molecular studies were done on DNA from peripheral blood leukocytes or bone marrow with the restrictions enzymes BglII, EcoRI, HindIII, and BamHI, and the BCR 3' probe (transprobe 1) (Oncogene Science Inc.), which encompasses almost all of the 5.8 Kb of the M-BCR gene area. In 18 patients Southern blot analysis showed deletion of the 3' end of BCR gene (32.7%). There were no significant differences between patients with or without deletion, either in the clinical and laboratory data at the disease diagnosis or at the disease outcome. The absence of differences between the patients with and without 3' BCR deletion supports the hypothesis that the hybrid gene ABL-BCR does not have an important role in leukemogenesis in CML cases.
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Affiliation(s)
- F A González
- Department of Haematology, Hospital Clínico San Carlos, Madrid, Spain
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30
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Abstract
Two studies tested hypotheses on the content and structure of autobiographical memories and the affect linked to them. In Study 1, agentic- and communal-motivated individuals recorded their most memorable experiences and completed the PANAS each day for 6 weeks. Memories were coded for content and structure. Agentics and communals reported more motive congruent memories, and their congruent memories were structured using more differentiation and integration, respectively. In addition, agentics had slightly higher PA and lower NA scores. In Study 2, agentics and communals recalled an event pertaining to either social separation or connection and then completed an affect measure of agentic and communal items. Agentics recalled more agentic memories in the separation condition and communals recalled more communal memories in the connection condition. Complexity analyses showed that agentics and communals used differentiation and integration respectively to recall their motive-congruent memories. The affect data showed a modestpredicted pattern. Results suggest that implicit motives have an impact on autobiographical memory but are not as clearly related to self-report affect measures, possibly due to method variance.
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Affiliation(s)
- B Woike
- Department of Psychology, Barnard College, Columbia University, New York, NY 10027, USA.
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31
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Smith PD, Polo M, Soler PM, McClintock JS, Maggi SP, Kim YJ, Ko F, Robson CM. Efficacy of growth factors in the accelerated closure of interstices in explanted meshed human skin grafts. J Burn Care Rehabil 2000; 21:5-9. [PMID: 10661532 DOI: 10.1097/00004630-200021010-00003] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Meshed split-thickness skin grafts, especially when required to be widely spread, do not obtain immediate biologic wound closure. In cases of patients with burns that cover a large percentage of the body surface area, this leaves the patient at risk for metabolic problems and life-threatening infection. Several cytokines and growth factors could theoretically affect the rate of epithelialization and, therefore, the rate of meshed graft interstitial closure. With the use of human meshed skin grafts explanted onto athymic "nude" rats, the epithelialization kinetics of interleukin-4 (IL-4), macrophage colony-stimulating factor (MCSF), keratinocyte growth factor-1 (KGF-1), keratinocyte growth factor-2 (KGF-2), basic fibroblast growth factor (bFGF), and transforming growth factor beta-2 (TGF(B2)) were investigated; the results were compared with the rates of epithelialization of grafts treated with a vehicle control. On postoperative day 3, wounds treated with IL-4, KGF-2, bFGF, and TGF(B2) showed a significantly increased rate of interstitial closure (P < .05). On postoperative days 5 and 7, wounds treated with KGF-2, bFGF, and TGF(B2) all exhibited a significantly higher rate of interstitial closure than the grafts in the control group (P < .05). These data suggest that epithelialization kinetics can be accelerated with the use of several topical growth factors, and they provide support for a future clinical trial.
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Affiliation(s)
- P D Smith
- Institute of Tissue Regeneration, Repair, and Rehabilitation, Department of Veterans Affairs Medical Center, Bay Pines, Florida 33744, USA
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32
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Polo M, Smith PD, Kim YJ, Wang X, Ko F, Robson MC. Effect of TGF-beta2 on proliferative scar fibroblast cell kinetics. Ann Plast Surg 1999; 43:185-90. [PMID: 10454327] [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: 02/13/2023]
Abstract
Keloids, hypertrophic scars, and burn hypertrophic scars are all forms of proliferative scarring characterized by overabundant matrix formation. Recently these dermal proliferative disorders have been linked clinically to the cytokine transforming growth factor beta (TGF-beta), and in vitro tests have shown it to be responsible for the activation of fibroblasts and their production and deposition of collagen. Using an established in vivo animal model of proliferative scarring, the effects of this cytokine, specifically the isoform TGF-beta2, on these scars were examined. Proliferative scar specimens were implanted into athymic, asplenic nude rats and isolated in sandwich island flaps based on the superficial inferior epigastric pedicle. After establishment of the transferred flap, the scars were injected with varying doses of TGF-beta2 or vehicle for 5 consecutive days and then again on days 10, 15, and 20. The specimens were measured weekly during the period of dosing, and a biopsy was acquired on days 30 and 60. Fibroblasts from the explanted biopsies and the original scars were grown in cell culture, and cell proliferation studies were performed and the results compared. There was a dose response to TGF-beta2, with 200 ng showing the greatest effect. From the original scar specimens, keloid scars demonstrated the greatest cell proliferation kinetics--significantly faster than nonburn and burn hypertrophic scars. After treatment with TGF-beta2, both keloids and burn hypertrophic scars showed an increase in their cell proliferation kinetics compared with vehicle alone. This was not demonstrated with the nonburn hypertrophic scars. Elevated levels of TGF-beta2 are a major contributing factor to the process of proliferative scars, but because nonburn hypertrophic scars do not result in an equally increased response to this cytokine, a truly causative role for this cytokine cannot be promulgated. Rather, it is the combination of the proliferative scar fibroblasts' abnormal response to TGF-beta2 stimulation and elevated levels of this cytokine that controls more accurately the process of keloid and burn hypertrophic scar formation.
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Affiliation(s)
- M Polo
- Institute for Tissue Regeneration, Repair and Rehabilitation, Bay Pines VA Medical Center, FL 33744, USA
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33
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Abstract
Findings from 4 studies suggest that differentiation and integration are used by individuals high in agency and communion to structure motive-related information in episodic memory. Studies 1 and 2 demonstrated that agentic and communal individuals recalled more emotional experiences related to their motives, and that agentic individuals used more differentiation whereas communal individuals used more integration to structure these memories. Study 3 showed that agentic and communal individuals used more differentiation and integration to structure memories about social separation and connection, respectively. Study 4 demonstrated a similar pattern of recall in an experimentally controlled retrieval task. For a motive-congruent topic, agentic individuals recognized more differentiated information and had fewer differentiation recognition errors, and communal individuals freely recalled more integration.
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Affiliation(s)
- B Woike
- Department of Psychology, Barnard College, Columbia University, New York, New York 10027-6598, USA.
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34
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Polo M, de Bravo MG, Carbone C. 3-Hydroxy-3-methylglutaryl coenzyme a reductase activity in liver of athymic mice with or without an implanted human carcinoma. Comp Biochem Physiol B Biochem Mol Biol 1999; 122:433-7. [PMID: 10392455 DOI: 10.1016/s0305-0491(99)00021-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydroxymethylglutaryl coenzyme A (HMG-CoA) reductase activities and cholesterol content in the liver of athymic mice either bearing or not an implanted human lung mucoepidormoid carcinoma (HLMC) and in the neoplasic tissue, were analyzed. The properties of the HMG-CoA reductase of HLMC grown in nude mice and those ones found in the liver of these animals, sacrificed either at mid-light or mid-dark, were similar. The hepatic reductase activity was found to be four- to five-fold greater at mid-dark than at mid-light (462 +/- 141 vs. 123 +/- 22 pmol min-1 mg protein-1). Since the Km value was not modified, the mid-dark activity could be due to an increase in the amount of enzyme. In contrast, HLMC reductase activity and cholesterol content showed similar values at mid-light and mid-dark points. HLMC reductase does not appear to have any diurnal variation and the cholesterol synthesis and content seems to be independent of food intake. HLMC-bearing nude mice undergo several alterations in the biosynthesis and homeostasis of cholesterol. Hypocholesterolemia, lower hepatic cholesterol content and higher HMG-CoA reductase activity are characteristic of host mice.
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Affiliation(s)
- M Polo
- Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP), Facultad de Cs. Médicas, UNLP-CONICET, Argentina
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35
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Abstract
Findings from 4 studies suggest that differentiation and integration are used by individuals high in agency and communion to structure motive-related information in episodic memory. Studies 1 and 2 demonstrated that agentic and communal individuals recalled more emotional experiences related to their motives, and that agentic individuals used more differentiation whereas communal individuals used more integration to structure these memories. Study 3 showed that agentic and communal individuals used more differentiation and integration to structure memories about social separation and connection, respectively. Study 4 demonstrated a similar pattern of recall in an experimentally controlled retrieval task. For a motive-congruent topic, agentic individuals recognized more differentiated information and had fewer differentiation recognition errors, and communal individuals freely recalled more integration.
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Affiliation(s)
- B Woike
- Department of Psychology, Barnard College, Columbia University, New York, New York 10027-6598, USA.
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36
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Parlorio de Andrés E, Sánchez del Peral G, Polo M, Bustos García de Castro A. [Lymphoma of the urogenital system]. Sangre (Barc) 1998; 43:499-505. [PMID: 10089810] [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: 02/11/2023]
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37
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Wassermann RJ, Polo M, Smith P, Wang X, Ko F, Robson MC. Differential production of apoptosis-modulating proteins in patients with hypertrophic burn scar. J Surg Res 1998; 75:74-80. [PMID: 9614860 DOI: 10.1006/jsre.1998.5267] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [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: 11/22/2022]
Abstract
BACKGROUND The biochemical and cellular pathways resulting in the production of proliferative scar in the thermally injured patient remain incompletely elucidated. A promising area of investigation is the phenomenon of programmed cell death and its modulation. The following study was designed to quantify differential levels of the bcl-2 protooncogene and the Fas cell surface receptor, two apoptosis-modulating proteins, in the peripheral blood mononuclear cell (PBMC) fractions of burn patients with hypertrophic scar versus those considered to have healed normally. The study also encompassed an immunohistochemical examination of fibroblasts in vitro, to identify differential levels of Fas, bcl-2, and interleukin converting enzyme (ICE). METHODS PBMC fractions were isolated from two matched burn patient cohorts of 10 patients each, the experimental group carrying the clinical and histopathologic diagnosis of hypertrophic burn scar. The supernatant from each mitogenically stimulated specimen was halved and subjected to the Fas/APO-1 enzyme-linked immunosorbent assay (ELISA) and the bcl-2 ELISA. Results for each assay were compared between groups by unpaired t tests. Further biopsy specimens of isolated proliferative scar were used in vitro to analyze the role of these apoptosis-modulating proteins and ICE. This immunoperoxidase technique was analyzed qualitatively. RESULTS The expression of the bcl-2 protein in the PBMC fractions of the burn patients with hypertrophic scar is significantly elevated in comparison to the control cohort (307.72 +/- 72.29 u/ml vs 31.55 +/- 6.73 u/ml; P = 0.0042). The quantitative levels of the Fas receptor did not differ significantly between the groups, respectively (0.3988 +/- 0.179 u/ml vs 0.2899 +/- 0.066 u/ml; P = 0.5787). Immunoperoxidase staining of proliferative scar fibroblasts and those from surrounding skin revealed relatively decreased levels of membrane-bound Fas and ICE. bcl-2 was not detectable in these specimens. CONCLUSIONS Differential expression of the bcl-2 protooncogene and the Fas cell surface receptor in the PBMC fraction of patients with burn injuries may suggest a disequilibrium in a complex biochemical signaling mechanism mediating programmed cell death. The increased levels of bcl-2 could be responsible for delayed fibroblast apoptosis, resulting in the disruption of normal healing and subsequent hypertrophic scarring. This is confirmed by an in vitro examination of wound fibroblasts versus those from surrounding uninjured skin. This immunoperoxidase technique reveals a localized relative decrease in Fas and ICE, two apoptosis-inducing proteins, at the level of the fibroblast in the proliferative scar specimen.
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Affiliation(s)
- R J Wassermann
- Division of Plastic & Reconstructive Surgery, University of South Carolina School of Medicine, Columbia 29203, USA
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38
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Abstract
BACKGROUND Many aspects related to the biology and the effective therapy of proliferative scars have remained undefined, in part due to a lack of an accurate and reproducible animal model with which to systematically study them. This report describes a new model for investigating the pathophysiology and manipulation of human proliferative scars. MATERIALS AND METHODS Human proliferative scars (n = 86) were explanted into flaps based on isolated vascular pedicles in congenitally athymic rats. Serial analysis of the structural and functional integrity of the explanted scars was performed by microscopy and by measurement of human procollagen type III peptide (PIIIP) production, human factor VIII immunostaining, and in vitro cellular proliferation. RESULTS By these methods, both fibroblastic and epithelial components of explanted scar specimens retained the histologic characteristics of original human scar specimens, for up to 12 months. Over the same duration, scar explants continued to have high levels of human PIIIP, comparable to those found in original surgical specimens. The microvasculature of scar explants demonstrated a double basement membrane, with no staining of human factor VIII in the inner capillary endothelial layer, suggesting that host vessels were growing into ghost vessels of the human donor scar. Human factor VIII staining decreased over time. Fibroblasts cultured from explanted scar demonstrated less aggressive growth characteristics than those from original surgical specimens. CONCLUSIONS This new model is the first to allow such long-term maintenance and serial evaluation of human proliferative scar on an accessible, isolated vasculature. It may prove useful in further defining the biology and therapy of this widespread pathologic process.
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Affiliation(s)
- M Polo
- University of South Florida, Tampa, USA
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39
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Polo M, García-Bravo M, Igal A, Dumm IN, Goya RG. Age changes in the activity of liver 3-hydroxy-3-methylglutaryl-CoA reductase in female rats: influence of mammary pathology. Mech Ageing Dev 1998; 100:41-51. [PMID: 9509393 DOI: 10.1016/s0047-6374(97)00116-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydroxymethylglutaryl-Coenzyme A (HMG-CoA) reductase is a highly regulated enzyme which shows a marked circadian rhythmicity. We studied the impact of aging on this rhythm as well as the degree of correlation between age changes in circulating pituitary hormone levels and liver reductase activity in young (4 months) and old (33 months) Sprague-Dawley female rats. Lipid composition was also assessed in plasma and liver microsomes. The maximal activity (midnight) of HMG-CoA reductase fell from 864 +/- 28 pmol mevalonate/min/mg protein in the young rats to 552 +/- 45 pmol/min/mg protein in the old animals, whereas significant change was not observed in the basal (noon) activity levels of the enzyme. Noon serum cholesterol, but not midnight values, was significantly higher in the old rats. Liver cholesterol levels were similar in young and old rats. In old rats, fatty acid composition of liver microsomes revealed an increase in linoleic acid concurrently with a significant decrease in arachidonic acid (AA). A significant correlation was not detected between the age changes in pituitary hormone (GH, PRL, TSH, FSH) serum levels and those in reductase activity. On the other hand, a significant positive correlation was found in the old rats between hepatic reductase activity and the severity of mammary pathology. We conclude that, like most biological rhythms, HMG-CoA reductase circadian fluctuation decreases in amplitude with age. This change does not seem to be linked to the alterations of neuroendocrine function associated with the aging process. The presence of growing mammary tumors seems to stimulate liver reductase activity, which may constitute an adaptive response of the enzyme to cholesterol demand by the growing neoplastic tissue.
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Affiliation(s)
- M Polo
- INIBIOLP, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Argentina
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40
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Polo M, Ko F, Busillo F, Cruse CW, Krizek TJ, Robson MC. The 1997 Moyer Award. Cytokine production in patients with hypertrophic burn scars. J Burn Care Rehabil 1997; 18:477-82. [PMID: 9404979 DOI: 10.1097/00004630-199711000-00002] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
To clarify the significance of the role of the immune system in the formation of proliferative burn scars, this study attempted to identify differential production of cytokines between patients with burn injuries with and without hypertrophic scars. Mononuclear cell fractions were isolated from the peripheral blood (PBMC) of each patient and incubated with and without antigenic or mitogenic stimulation. The resultant supernatants were then assayed by ELISA techniques for production of various cytokines. The production of IL-1, IL-6, TNF-alpha, and TGF-beta2 by unstimulated PBMC was elevated significantly in patients with proliferative scar compared to control patients. Production of TGF-beta2 by stimulated PBMC also was elevated significantly in patients with proliferative scar. This study suggests that an increase in the production of TGF-beta and of proinflammatory cytokines by mononuclear cells may play a significant role in the processes that lead to excessive scar formation after burn injury.
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Affiliation(s)
- M Polo
- Tampa Bay Burn/Wound Center, University of South Florida, Tampa, USA
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41
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Manivit P, Polo R, Nabet M, Jacquier A, Chipponi PN, Tabary D, Rubini B, Polo M, Fromaget JM, Gobertier Gasparini G. Stratégie thérapeutique locorégionale combinée dans les cancers localement évolués du pancréas. Cancer Radiother 1997. [DOI: 10.1016/s1278-3218(97)89642-4] [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: 10/18/2022]
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42
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Abstract
Minoxidil has been proposed as a potential topical inhibitor of wound contraction and proliferative scarring. Suggestions for this application are derived from in vitro investigations demonstrating inhibition of various fibroblastic functions. The purpose of this study was to attempt to establish in vivo support of these effects using an established animal model of wound contraction. Standardized cutaneous wounds were created on the dorsum of Sprague-Dawley rats, which were divided equally into six treatment groups. Wounds were treated daily after tracing their unhealed areas. On complete closure of the wounds, analyses of the contraction rates and tensile strength were performed for comparison among groups. Minoxidil did not demonstrate significant inhibition of wound contraction rates relative to either an inert vehicle, an active vehicle, or no treatment. Contrarily, as previously demonstrated in this animal model, silver sulfadiazine did demonstrate significant inhibition of wound contraction rates relative to both vehicles. No significant difference in tensile strength was demonstrated among groups. These observations do not support the proposed use of minoxidil as an "antifibrotic" agent.
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Affiliation(s)
- M Polo
- University of South Florida, Division of Plastic Surgery, USA
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43
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de Bravo MG, Schinella G, Polo M, Tournier H. Effects of lovastatin on the fatty acid desaturation in a human lung mucoepidermoid carcinoma grown in nude mice. Biochem Mol Biol Int 1996; 38:929-35. [PMID: 9132162] [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] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The effect of lovastatin, a hypocholesterolemic drug, on tumor growth and desaturase activity was studied in a human lung mucoepidermoid carcinoma (HLMC) grown in nude mice. After administration of a diet supplemented with 25 mg% (w/w) lovastatin for 30 days the growth of HLMC was not inhibited. Liver and tumor phospholipid/cholesterol ratio was increased in lovastatin group but serum cholesterol was unaffected. Treatment with lovastatin increased delta 5 and delta 9 desaturation in tumor microsomes, whereas delta 6 desaturation did not change in tumors of treated mice. The changes were not reflected in the fatty acid composition of total tumor lipids.
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Affiliation(s)
- M G de Bravo
- Instituto de Investigaciones Bioquimicas de La Plata (INIBIOLP), Facultad de Ciencias Medicas, Argentina
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44
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Manivit P, Polo R, Tabary D, Nabet M, Polo M, Adamy M, Rubini B, Fromaget JM, Chipponi PN, Untereiner M. [Initial locoregional chemotherapy in recurrent and locoregional advanced or inoperable stages of pelvic uterine and anorectal cancers]. Bull Cancer 1995; 82:137-48. [PMID: 10846531] [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: 02/16/2023]
Abstract
The authors report their 12 years of experience of intra arterial chemotherapy in pelvic recurrences and inoperable advanced stages of uterine carcinoma, rectal cancer and anal cancer. In squamous cell cancers the drug associations were mitomycin C, bleomycin, fluorouracil and folinic acid and cisplatin. In adenocarcinoma the same protocol contained no bleomycin. Drugs were infused for a 48 hours period in continuous infusion. The dosages were the same than in the intravenous regimens. Twenty patients with pelvic recurrences were included in this retrospective study: six were uterine cancers, fourteen were colo rectal cancers and two had advanced stage uterine cancer. Pain decreased in 10/14 patients with ano-rectal cancer pre sacral recurrence. Partial response was observed in 12 patients. Complete secondary surgical resection was possible in 4/14 rectal cancers and 6/6 uterine cancer recurrences. Chemotherapy induced a pathological complete response in 4/6 uterine cervix carcinoma recurrences. These observations led to perform pelvic intra arterial chemotherapy as first line treatment of locally-advanced inoperable pelvic tumors: 11 uterine cancers and five ano-rectal cancers. The objective were: tumor reduction before radiotherapy or surgery, tumor sterilization, decrease tumor volume for better radiation dosimetry, increase the chance of organ-preservation. The observation of tumor reduction in this small number of patients does not allow to draw definite conclusions. However the introduction of intra arterial pelvic chemotherapy as first line treatment of inoperable pelvic cancer warrants further studies.
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Affiliation(s)
- P Manivit
- Service de radiothérapie oncologie, hôpital Claude-Bernard, Metz, France
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45
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Bruscas C, Sancho MA, Polo M, Jiménez A, Simón L. [Dual photon absorptiometry in algodystrophy]. An Med Interna 1992; 9:487-9. [PMID: 1420760] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Biphotonic absorptiometry has begun to demonstrate its usefulness in the field of osteoporosis. In algodystrophy, the radiology and the degree of isotopic fixation suggest a bone disorder, although both techniques are unable to objectively quantify it. Biphotonic absorption is an scanning technique which allows the quantification of bone demineralization in the segment affected by algodystrophy and its evolutive follow-up.
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Affiliation(s)
- C Bruscas
- Servicio de Reumatología, Hospital Lapeyronie, Montpellier, Francia
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46
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Colamaria V, Mazza C, Beltramello A, Polo A, Boner A, Antoniazzi F, Polo M, Luchini P, Sgrò V, Dalla Bernardina B. Irreversible respiratory failure in an achondroplastic child: the importance of an early cervicomedullary decompression, and a review of the literature. Brain Dev 1991; 13:270-9. [PMID: 1957977 DOI: 10.1016/s0387-7604(12)80062-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The authors report the case of a girl with achondroplasia suffering from a progressively worsening hypotonic quadriparesis. CT scan showed slight dilatation of ventricular and subarachnoid spaces, with well-defined evidence of cortical sulci and gyri. This aspect was compatible with the diagnosis of macrocrania and megalencephaly (CP being 51 cm). The foramen magnum was narrowed, the transverse diameter measuring 15 mm and the 50th percentile being, for age, 26 mm. Somatosensory evoked potentials (SEPs) revealed bilaterally prolonged interpeak latencies Erb-N13, slowing of central conduction time N13-N20 from right median nerve stimulation, and block from left median nerve. The suspicion of cervicomedullary compression was confirmed by MRI, showing a very marked stenosis with compression exerted by the odontoid process. Further, a stenotic cervical canal and optic nerves verticalization were manifest. The patient underwent neurosurgical decompression by suboccipital craniectomy and cervical-C1 laminectomy. In spite of treatment, both neurologic and respiratory problems (rapid, shallow and almost abdominal breathing) were unchanged. The girl died 4 1/2 months later. The authors emphasize the important role of SEPs in detection of cervicomedullary compression in achondroplastic children and also stress the necessity of an early surgical treatment as the only condition for possible clinical improvement and/or full recovery.
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Affiliation(s)
- V Colamaria
- Service for Child Neuropsychiatry, Verona University, Italy
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47
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Abstract
The neurilemoma (benign schwannoma) is a benign tumor which arises from the Schwann cells of the peripheral nerves. In an intraosseous localization it is a very rare lesion, only forty cases being reported in the literature, and only two of these with the tumor located in the femur. This paper reports on a patient with a large neurilemoma in the lower part of the left femur.
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Affiliation(s)
- L Sanado
- Orthopedic Department, Hospital Clinico Universitario de Malaga, Spain
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48
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Polo M, Cabras M, Licheri S, Polo F. [A case of lithiasis and stenosis of the urethra. Diagnostic and therapeutic problems]. MINERVA UROL NEFROL 1990; 42:235-8. [PMID: 2095640] [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: 12/30/2022]
Abstract
The association of urethral stenosis and stones is not frequent. The urethral stenosis, particularly common in males, recognizes, as predisposing causes, urethritis, IPB, perineal trauma, neurogenic bladder and, last, but not the least important, endoscopic treatments or repeated catheterism. The authors report a case of a 42 year old man who underwent, for urolithiasis, several endoscopic examinations, which became urethral-stenosis with stones within four years. With responsible and critical behaviour, etiology, the diagnostic procedures and the therapy (invasive or not) of the urethral-stenosis are examined and evaluated. Diagnosis must be based on a non painful approach (clinical, bacteriological, ultrasonography, uro-dynamic studies); the invasive procedures must be limited as much is possible. Whatever treatment is used, which may always give sequences or complications, a prolonged follow-up is mandatory to have an objective evaluation of the results.
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Affiliation(s)
- M Polo
- Divisione di Chirurgia Generale, USL N. 12 Ospedale G.P. Delogu, Chilarza Oristano
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49
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50
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Blanes A, Panea P, Polo M, Galera H, Matilla A. [Primary leiomyosarcoma of the skin]. Actas Dermosifiliogr 1982; 73:111-6. [PMID: 7148544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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