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Benito-Román Ó, Blanco B, Sanz M, Beltrán S. Freeze-dried extract from onion (Allium cepa cv. Horcal) skin wastes: Extraction intensification and flavonoids identification. Food and Bioproducts Processing 2021. [DOI: 10.1016/j.fbp.2021.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Kashaninejad M, Sanz M, Blanco B, Beltrán S, Niknam S. Freeze dried extract from olive leaves: Valorisation, extraction kinetics and extract characterization. Food and Bioproducts Processing 2020. [DOI: 10.1016/j.fbp.2020.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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de Luis DA, Izaola O, López L, Blanco B, Colato CA, Kelly OJ, Sanz R. Correction to: AdNut study: effectiveness of a high calorie and protein oral nutritional supplement with β-hydroxy-β-methylbutyrate in an older malnourished population in usual clinical practice. Eur Geriatr Med 2019; 10:537. [DOI: 10.1007/s41999-019-00182-4] [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: 10/27/2022]
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de Luis DA, Izaola O, López L, Blanco B, Colato CA, Kelly OJ, Sanz R. AdNut study: effectiveness of a high calorie and protein oral nutritional supplement with β-hydroxy-β-methylbutyrate in an older malnourished population in usual clinical practice. Eur Geriatr Med 2018; 9:809-817. [PMID: 31246180 PMCID: PMC6267630 DOI: 10.1007/s41999-018-0109-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 03/08/2018] [Accepted: 07/31/2018] [Indexed: 11/24/2022]
Abstract
Objective To evaluate the effectiveness of a high calorie and protein, β-hydroxy-β-methylbutyrate containing oral nutritional supplement (HP-HMB-ONS), on nutritional status, activities of daily living and quality of life (QoL) in old malnourished subjects. Methods We conducted an observational, prospective, open label, multicenter study. Participants were > 65 years, undernourished or at nutritional risk [Nutrition Risk Score (NRS) ≥ 3] and had been included on an ONS (HP-HMB-ONS twice daily for 12 weeks) per standard of care. Visits at baseline (V1), 6 weeks (V2) and 12 weeks (V3) were performed. The primary endpoints were gain of body weight, change in body mass index (BMI) and NRS 2002 index. Data from QoL (EQ-5D-3L) and activities of daily living (Katz index) were also collected. Results A total of 235 participants were included in the study. Of these 148 took at least a 75% of the HP-HMB-ONS and were included in the analysis (per protocol); median age was 80.0 (SD:8.3) years, 65.5% (n = 97) were female, 67.6% (n = 100) had 2 or more diseases. At V3, a statistically significant increase in weight (2.1 kg; SD: 3.8) (p < 0.001) and BMI (0.8 kg/m2; SD: 1.45) were found compared to V1, whereas NRS 2002 values decreased by 0.9 (SD: 1.2). A significant (p < 0.001) improvement in Katz index (mean change = 0.3; SD:1.4) and EQ-5D scoring (mean change = 0.5; SD:1.9) compared to V1, were also reported. Conclusions The results suggest that administration of a HP-HMB-ONS improve the nutritional status and may led to a significant improvement in patients' activities of daily living and QoL, independent of baseline BMI.
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Affiliation(s)
- D A de Luis
- 1Centro de Investigación de Endocrinología y Nutrición Clínica Facultad de Medicina, Servicio de Endocrinología y Nutrición Hospital Clínico Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain
| | - O Izaola
- 1Centro de Investigación de Endocrinología y Nutrición Clínica Facultad de Medicina, Servicio de Endocrinología y Nutrición Hospital Clínico Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain
| | - L López
- 2Hospital San Juan, Alicante, Spain
| | - B Blanco
- Hospital de Elda, Alicante, Spain
| | - C A Colato
- Residencia AMMA el Balconcillo, Guadalajara, Spain
| | | | - R Sanz
- Abbott Nutrition, Madrid, Spain
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Blanco B, Lopez B, Ferrandez M, Gomez N. Nutritional status (NS) and healthcare resource (HCR) use after implementation of a nutritional program (NP) for home-based (HB) neurological patients (PTS) with disabilities. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1414] [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: 10/28/2022]
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Lucena R, Olmedilla AB, Blanco B, Novales M, Ginel PJ. Effect of Enterococcus faecium SF68 on serum cobalamin and folate concentrations in healthy dogs. J Small Anim Pract 2018; 59:438-443. [PMID: 29667183 DOI: 10.1111/jsap.12845] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 03/13/2018] [Accepted: 03/28/2018] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To study the effect of a 14-day administration of the probiotic Enterococcus faecium SF68 on serum concentrations of cobalamin and folate in healthy dogs. MATERIALS AND METHODS Thirty-six healthy dogs were randomly allocated between probiotic and control groups. Enterococcus faecium SF68 was administered to the probiotic group for 14 days whereas the control group did not receive any product. A blood sample was taken from all dogs when starting the administration (day 1), when the administration ended (day 14) and 14 days later (day 28). Serum cobalamin and folate concentrations and the canine inflammatory bowel disease activity index scores were determined at each time point. RESULTS There was a progressive reduction of mean serum cobalamin in the probiotic group during the 28-day study, with significantly lower concentration at day 28 compared to baseline and day 14 concentrations. Moderate hypocobalaminaemia was observed in eight dogs at day 28. Probiotic administration was associated with a non-significant increase in mean serum folate concentration at day 14, and a significant decrease at day 28 compared with day 1. The canine inflammatory bowel disease activity index score remained unaltered during the study. CLINICAL SIGNIFICANCE Short-term Enterococcus faecium SF68 administration caused a significant reduction of mean cobalamin concentration and moderate hypocobolaminaemia in eight of 18 dogs. Monitoring serum folate appears unnecessary because the probiotic caused a non-significant increase that returned to baseline values after administration was discontinued.
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Affiliation(s)
- R Lucena
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Córdoba, 14014, Córdoba, Spain
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Nebreda T, Álvarez-Prida E, Blanco B, Remacha MA, Samper S, Jiménez MS. Peritoneal tuberculosis due to Mycobacterium caprae. IDCases 2016; 4:50-2. [PMID: 27134824 PMCID: PMC4833828 DOI: 10.1016/j.idcr.2016.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 02/24/2016] [Accepted: 02/24/2016] [Indexed: 11/16/2022] Open
Abstract
The incidence of tuberculosis in humans due to Mycobacterium caprae is very low and is almost confined to Europe. We report a case of a previously healthy 41-year-old Moroccan with a 6 month history of abdominal pain, weight loss, fatigue and diarrhea. A diagnosis of peritoneal tuberculosis due to M. caprae was made.
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Affiliation(s)
- T Nebreda
- Servicio de Microbiología, Complejo Asistencial Universitario de León, León, Spain
| | - E Álvarez-Prida
- Servicio de Cirugía General, Complejo Asistencial Universitario de León, León, Spain
| | - B Blanco
- Servicio de Medicina Interna, Complejo Asistencial Universitario de León, León, Spain
| | - M A Remacha
- Servicio de Microbiología, Complejo Asistencial Universitario de León, León, Spain
| | - S Samper
- Instituto de Investigación Sanitaria Aragón, Instituto Aragonés de Ciencias de la Salud, Consorcio Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, Zaragoza, Spain
| | - M S Jiménez
- Centro Nacional de Microbiología, Instituto Carlos III, Majadahonda, Madrid, Spain
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Novales M, Ginel PJ, Diz A, Blanco B, Zafra R, Guerra R, Mozos E. Mucoperiosteal Exostoses in the Tympanic Bulla of African Lions (Panthera leo). Vet Pathol 2014; 52:377-83. [DOI: 10.1177/0300985814531499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mucoperiosteal exostoses (MpEs) of the tympanic bulla (TB), also referred as middle-ear otoliths, have been occasionally described in dogs and cats in association with clinical signs of otitis media or as an incidental finding, but they have not been recorded in other species. In this report, we describe the radiographic, gross, and histopathologic features of MpEs in 8 African lions ( Panthera leo). All animals (5 males and 3 females) were adults that had been kept in captivity and had their skeletons conserved as part of an anatomic academic collection. A radiographic study revealed mineralized structures in the TB consistent with MpEs in 7 of the 16 examined TB; a computed tomography study identified MpEs in 12 of the 16 TB. Six TB from 4 lions were sectioned, and several MpEs were demineralized for histopathologic analysis. Grossly, MpEs appeared variable in number and shape. Some were globular structures that were loosely attached to the mucosal surface of the TB; others were isolated to coalescent bone spicules extending from the mucoperiosteum. Position was also variable, but MpEs frequently developed in the hypotympanum, especially on the ventromedial aspect of the TB wall. Microscopically, MpEs were composed of osteonal bone growing from the periosteum and not by dystrophic calcification of necrotic tissue debris, as is hypothesized in dogs.
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Affiliation(s)
- M. Novales
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
| | - P. J. Ginel
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
| | - A. Diz
- Department of Anatomy and Comparative Pathology, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
| | - B. Blanco
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
| | - R. Zafra
- IUSA, University of Las Palmas de Gran Canaria, Las Palmas, Spain
| | - R. Guerra
- Zoological Garden of Córdoba, Córdoba, Spain
| | - E. Mozos
- Department of Anatomy and Comparative Pathology, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
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Negrini J, Guerra R, Ruiz J, Novales M, Blanco B, Diz A, Mozos E. Multiple Malformations in Non-related Captive Lions (Panthera leo). J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.174] [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: 12/01/2022]
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Amaya MP, Criado L, Blanco B, Gómez M, Torres O, Flórez L, González CI, Flórez O. Polymorphisms of pro-inflammatory cytokine genes and the risk for acute suppurative or chronic nonsuppurative apical periodontitis in a Colombian population. Int Endod J 2012; 46:71-8. [DOI: 10.1111/j.1365-2591.2012.02097.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 06/09/2012] [Indexed: 11/27/2022]
Affiliation(s)
- M. P. Amaya
- Postgrado de Endodoncia, Facultad de Odontología; Universidad Santo Tomas; Bucaramanga; Colombia
| | - L. Criado
- Grupo de Inmunología y Epidemiología Molecular, GIEM; Facultad de Salud; Universidad Industrial de Santander; Bucaramanga; Colombia
| | - B. Blanco
- Postgrado de Endodoncia, Facultad de Odontología; Universidad Santo Tomas; Bucaramanga; Colombia
| | - M. Gómez
- Postgrado de Endodoncia, Facultad de Odontología; Universidad Santo Tomas; Bucaramanga; Colombia
| | - O. Torres
- Postgrado de Endodoncia, Facultad de Odontología; Universidad Santo Tomas; Bucaramanga; Colombia
| | - L. Flórez
- Postgrado de Endodoncia, Facultad de Odontología; Universidad Santo Tomas; Bucaramanga; Colombia
| | - C. I. González
- Grupo de Inmunología y Epidemiología Molecular, GIEM; Facultad de Salud; Universidad Industrial de Santander; Bucaramanga; Colombia
| | - O. Flórez
- Grupo de Inmunología y Epidemiología Molecular, GIEM; Facultad de Salud; Universidad Industrial de Santander; Bucaramanga; Colombia
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Gómez-Laguna J, Barranco I, Rodríguez-Gómez IM, Blanco B, Guil-Luna S, Carrasco L, de las Mulas JM. Malignant mesenchymoma of the heart base in a dog with infiltration of the pericardium and metastasis to the lung. J Comp Pathol 2012; 147:195-8. [PMID: 22516086 DOI: 10.1016/j.jcpa.2012.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 12/11/2011] [Accepted: 01/04/2012] [Indexed: 11/25/2022]
Abstract
A 9-year-old male rottweiler was presented with abdominal distension, ascites and respiratory distress and marked bulging in the perineal region. At necropsy examination the animal had profuse ascites and hydropericardium and a multinodular mass in the right auricle of the heart infiltrating the epicardium and pericardium and metastasizing to the caudal lobe of the left lung. Microscopically and immunohistochemically the tumour was composed of neoplastic cells with muscular, cartilaginous and adipose differentiation. A diagnosis of malignant mesenchymoma with leiomyosarcomatous (≈ 50%), rhabdomyosarcomatous (≈ 30%), chondrosarcomatous (25%) and liposarcomatous (5%) components was made. Metastatic malignant mesenchymoma has not been reported previously at this site in the dog.
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Affiliation(s)
- J Gómez-Laguna
- Department of Anatomy and Comparative Pathology, Campus of Rabanales, Faculty of Veterinary Medicine, Córdoba University, International Excellence Agrifood Campus - CeiA3, Spain.
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12
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Gutierrez-Cosío S, de la Rica L, Ballestar E, Santamaría C, Sánchez-Abarca LI, Caballero-Velazquez T, Blanco B, Calderón C, Herrero-Sánchez C, Carrancio S, Ciudad L, Cañizo C, San Miguel JF, Pérez-Simón JA. Epigenetic regulation of PRAME in acute myeloid leukemia is different compared to CD34+ cells from healthy donors: effect of 5-AZA treatment. Leuk Res 2012; 36:895-9. [PMID: 22503131 DOI: 10.1016/j.leukres.2012.02.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 02/21/2012] [Accepted: 02/27/2012] [Indexed: 12/20/2022]
Abstract
PRAME is a tumor associated antigen (TAA) of particular interest since it is widely expressed by lymphoid and myeloid malignancies. Several studies have associated high PRAME RNA levels with good prognosis in acute myeloid leukemia (AML). PRAME expression is regulated at the epigenetic level. For this reason inhibitors of DNA methylation, such as 5-azacytidine, can modulate the expression of this TAAs. In the current study we analyzed the effect of 5-azaC on the expression of PRAME in blasts versus CD34+ cells from healthy donors in an attempt to increase its expression, thus inducing a potential target for therapeutic strategies.
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Affiliation(s)
- S Gutierrez-Cosío
- Hematology Unit, Hospital Universitario de Salamanca, Salamanca, Spain
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Ginel PJ, Blanco B, Lucena R, Jiménez CR, Peinado-Guitart C, Mozos E. Steroid-sparing effect of mycophenolate mofetil in the treatment of a subepidermal blistering autoimmune disease in a dog. J S Afr Vet Assoc 2011; 81:253-7. [PMID: 21526742 DOI: 10.4102/jsava.v81i4.157] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
A 7-year-old female Cocker spaniel-cross was referred with an 8-month history of mucocutaneous erosive dermatitis. On physical examination, skin lesions affected the eyelids and periocular area, lips and vulva. Lesions were symmetrical with small diffuse superficial ulcers, haemorrhagic crusts, adherent purulent exudation in haired skin, and alopecia with hyperpigmentation and scarring. Histopathologic evaluation showed multiple, non-intact dermoepidermal junction vesicles and ulceration associated with a dermal lichenoid infiltrate. Immunohistochemistry showed strong to moderate reactivity in the dermoepidermal junction for the antibodies directed against canine IgG, human IgG lambda light chains and C3, respectively. A diagnosis of autoimmune subepidermal blistering dermatosis was made. Treatment with oral prednisone at 2 mg/kg and mycophenolate mofetil (MMF) at 20 mg/kg twice daily was initiated and after 4 weeks the ulcers and erosions were cured. During the rest of treatment, MMF was maintained at 10 mg/kg twice daily and prednisone could be tapered to 0.25 mg/kg once every other day without recurrences. In conclusion, this case report shows that MMF was well tolerated and might be effective as steroid-sparing agent in the long-term treatment of this autoimmune subepidermal blistering disease.
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Affiliation(s)
- P J Ginel
- Departamento de Medicina y Cirugía Animal, Universidad de Córdoba, Campus de Rabanales, 14014 Córdoba, Spain.
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Santamaría C, Lopez O, Muntión S, Rosón B, Blanco B, Carranclo S, Sanchez-Guijo F, Díez-Campelo M, Alvarez-Fernández S, Sarasquete M, González M, Miguel JS, del Cañizo M. 258 Down-regulation of DICER1, DROSHA and microRNAs in MSC from MDS compared to healthy controls. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70260-0] [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]
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Raya AI, Afonso JC, Perez-Ecija RA, Blanco B, Mulas JMDL, Carrasco L, Cortade LE, Gomez-Laguna J. Orbital myositis associated with Lyme disease in a dog. Vet Rec 2010; 167:663-4. [DOI: 10.1136/vr.c4841] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- A. I. Raya
- Department of Animal Medicine and Surgery
| | - J. C. Afonso
- La Fuensanta Small Animal Clinic; Adv Fuensanta No 35 CP 14010 Cordoba Spain
| | | | - B. Blanco
- Department of Animal Medicine and Surgery
| | - J. Martín-de Las Mulas
- Department of Comparative Pathology; University of Cordoba; Campus Universitario Rabanales; Ctra Madrid Cadiz Km 396 CP 14014 Cordoba Spain
| | - L. Carrasco
- Department of Comparative Pathology; University of Cordoba; Campus Universitario Rabanales; Ctra Madrid Cadiz Km 396 CP 14014 Cordoba Spain
| | - L. E. Cortade
- La Fuensanta Small Animal Clinic; Adv Fuensanta No 35 CP 14010 Cordoba Spain
| | - J. Gomez-Laguna
- Department of Comparative Pathology; University of Cordoba; Campus Universitario Rabanales; Ctra Madrid Cadiz Km 396 CP 14014 Cordoba Spain
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Affiliation(s)
| | | | - J. Pérez
- Department of Pathology; School of Veterinary Medicine; University of Córdoba; Spain
| | - R. Zafra
- Department of Pathology; School of Veterinary Medicine; University of Córdoba; Spain
| | - M. Novales
- Department of Animal Medicine and Surgery
| | - R. A. Pérez-Écija
- Department of Pathology; School of Veterinary Medicine; University of Córdoba; Spain
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Tabera S, Perez-Simon JA, Diez-Campelo M, Sanchez-Abarca LI, Blanco B, Lopez A, Benito A, Ocio E, Sanchez-Guijo FM, Canizo C, San Miguel JF. The effect of mesenchymal stem cells on the viability, proliferation and differentiation of B-lymphocytes. Haematologica 2008; 93:1301-9. [DOI: 10.3324/haematol.12857] [Citation(s) in RCA: 203] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Villaron EM, Almeida J, Lopez-Holgado N, Sanchez-Guijo FM, Alberca M, Blanco B, Sanchez-Abarca LI, Lopez O, Perez-Simon JA, San Miguel JF, del Cañizo MC. In leukapheresis products from non-Hodgkin's lymphoma patients, the immature hematopoietic progenitors show higher CD90 and CD34 antigenic expression. Transfus Apher Sci 2007; 37:145-56. [PMID: 17983836 DOI: 10.1016/j.transci.2007.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 04/14/2007] [Accepted: 05/10/2007] [Indexed: 11/18/2022]
Abstract
Damage to the stem cell progenitors caused by the chemotherapy received in patients diagnosed with non-Hodgkin's lymphoma (NHL) may be an important factor limiting progenitor cell mobilization. The aim of the present analysis was to evaluate the effect of the chemotherapy on the different progenitor cell subpopulations obtained in the leukapheresis. For this purpose, a combination of immunophenotype and functional assays has been performed in 26 mobilized peripheral blood (PB) samples from NHL patients and 36 healthy donors. The different progenitor subpopulations analyzed by flow cytometry significantly correlated with the corresponding populations assessed by functional assays in both healthy donors and NHL patients (p<0.05, r>0.5). The number of committed CFU-GM was similar in both groups (p=0.246), but we found significant decrease in the number of BFU-E and more immature progenitors in PB from NHL patients as compared to donors (p<0.05). Moreover, the number of total CFU was significantly lower in NHL patients (p=0.007). Accordingly, CD34+ cells (p=0.018) and CD34+ subpopulations was decreased in NHL patients. Nevertheless, CD90 and CD34 intensity was significantly higher within CD34+ cells from NHL patients as compared to donors. However, although numerically reduced non-committed CD34+ cells are more immature in chemotherapy mobilized NHL patients. In summary, our results show that all NHL hematopoietic progenitors, analyzed by both immunophenotypical and functional approaches, are impaired in leukapheresis products.
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Affiliation(s)
- E M Villaron
- Hematology Department, Hospital Universitario de Salamanca, Salamanca, Spain
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Zerpa O, Ulrich M, Blanco B, Polegre M, Avila A, Matos N, Mendoza I, Pratlong F, Ravel C, Convit J. Diffuse cutaneous leishmaniasis responds to miltefosine but then relapses. Br J Dermatol 2007; 156:1328-35. [PMID: 17441955 DOI: 10.1111/j.1365-2133.2007.07872.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Diffuse cutaneous leishmaniasis (DCL), although rare, is profoundly incapacitating. At present there is no successful treatment for this progressive protozoan infection, which is associated with the absence of specific cell-mediated immunity (CMI) to Leishmania. This disease shares features with visceral leishmaniasis (VL), including specific CMI inactivity during active disease and a heavy parasitic burden, but VL responds well to treatment. Miltefosine is the first orally administered drug which has shown efficacy in the treatment of VL; it has not been adequately evaluated in the treatment of DCL. OBJECTIVES To evaluate the efficacy of miltefosine in the treatment of DCL, using clinical, parasitological, histopathological and immunological criteria. METHODS Sixteen patients with DCL were treated with miltefosine, 2.0-2.5 mg kg(-1) daily, for variable periods of time (75-218 days). Patients were hospitalized for the first month and evaluated every 2 weeks until the termination of treatment with routine laboratory chemistry, percentage clinical improvement, presence of parasites in skin smears, growth of parasites in culture medium and in hamsters, histopathological characteristics of the granulomas, adverse side-effects, and reactivity to leishmanin skin test antigen. Further cycles of treatment were given in some of these patients, particularly after suspension of treatment was followed by relapse. RESULTS Patients showed dramatic clinical improvement and reduction in the parasite burden by day 15 after the initiation of treatment, which continued while treatment was maintained. By day 45, 15 patients showed 80-90% clinical improvement. Nevertheless, suspension of treatment was followed by the development of new lesions in all but one patient. Inoculation in hamsters was observed to be the most sensitive technique to detect persisting parasites. Adverse events were very mild. CONCLUSIONS Miltefosine produced a dramatic clinical and parasitological response in patients with DCL and improvement continued during drug administration, but with a single exception all patients presented new lesions after suspension of treatment. There was no histological or skin test evidence to suggest the development of CMI during treatment, which may be an indispensable criterion for the evaluation of potentially effective drugs against DCL.
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Affiliation(s)
- O Zerpa
- Institute of Biomedicine, Ministry of Health, Central University of Venezuela, Esq. San Nicolás, San José, Caracas, Venezuela.
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López-Holgado N, Alberca M, Sánchez-Guijo F, Villarón E, Almeida J, Martín A, Armellini A, García C, Blanco B, Sánchez-Abarca I, Martín S, Pérez-Simón JA, García-Sanz R, San Miguel JF, del Cañizo MC. Short-term endothelial progenitor cell colonies are composed of monocytes and do not acquire endothelial markers. Cytotherapy 2007; 9:14-22. [PMID: 17354099 DOI: 10.1080/14653240601047726] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The aim of this study was to identify circulating endothelial progenitor cells (EPC) with colony-forming capacity and compare them with the monocytic-macrophage lineage. METHODS Forty-two healthy donors were analyzed. EPC were cultured with VEGF and b-FGF. Sequential studies were performed on days +7 (colonies) +21 and +35. Monocytic cells were cultured using the same conditions as EPC until day +21 or alternatively by adding IGF. RESULTS The number of EPC colonies was higher in BM than in mobilized or steady-state PB. Using EPC medium, monocytic cells formed cord-like structures but no colonies. However, colonies grew when IGF was added to the medium. By immunocytochemistry, colonies showed CD45, CD31 and lysozyme but no vWF. Colonies were CD4+, CD13+dim, CD14+, CD15++, CD16-/+dim, CD31+dim, CD33+dim, CD45+, CD105-/+dim, lysozyme+ and VE-cadherin+, and constantly negative for CD34, CD133 and KDR, when flow cytometry was used. The immunophenotype of pre-cultured and cultured monocytes was similar to that described for EPC. DISCUSSION Our results suggest that the so-called 'EPC' obtained at 7 days of culture belong to the monocyte-macrophage lineage, as they share immunophenotypic and molecular features.
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Affiliation(s)
- N López-Holgado
- Department of Hematology, Hospital Clínico Universitario de Salamanca, Salamanca, Spain
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21
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Compte M, Blanco B, Serrano F, Cuesta AM, Sanz L, Bernad A, Holliger P, Alvarez-Vallina L. Inhibition of tumor growth in vivo by in situ secretion of bispecific anti-CEA x anti-CD3 diabodies from lentivirally transduced human lymphocytes. Cancer Gene Ther 2007; 14:380-8. [PMID: 17218946 DOI: 10.1038/sj.cgt.7701021] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Infiltrating T lymphocytes are found in many malignancies, but they appear to be mostly anergic and do not attack the tumor, presumably because of defective T-cell activation events. Recently, we described a strategy for the tumor-specific polyclonal activation of tumor-resident T lymphocytes based on the in situ production of recombinant bispecific antibodies (bsAbs) by transfected nonhematological cell lines. Here, we have constructed a novel HIV-1-based lentiviral vector for efficient gene transduction into various human hematopoietic cell types. Several myelomonocytic and lymphocytic cell lines secreted the anti-carcinoembryonic antigen (CEA) x anti-CD3 diabody in a functionally active form with CD3(+) T-cell lines being the most efficient secretors. Furthermore, primary human peripheral blood lymphocytes (PBLs) were also efficiently transduced and secreted high levels of functional diabody. Importantly gene-modified PBLs significantly reduced in vivo tumor growth rates in xenograft studies. These results demonstrate, for the first time, the utility of lentiviral vectors for sustained expression of recombinant bsAbs in human T lymphocytes. Such T lymphocytes, transduced ex vivo to secrete the activating diabody in autocrine fashion, may provide a promising route for a gene therapy strategy for solid human tumors.
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Affiliation(s)
- M Compte
- Molecular Immunology Unit, Hospital Universitario Puerta de Hierro, Madrid, Spain
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22
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Perez-Labajos C, Azofra M, Blanco B, Achutegui J, González J. Analysis of accident inequality of the Spanish fishing fleet. Accid Anal Prev 2006; 38:1168-75. [PMID: 16797464 DOI: 10.1016/j.aap.2006.05.007] [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] [Subscribe] [Scholar Register] [Received: 09/29/2005] [Revised: 04/25/2006] [Accepted: 05/06/2006] [Indexed: 05/10/2023]
Abstract
There is at present a clear tendency to consider safety as a vital factor in the running of a country's fishing sector. However, the planning of the necessary resources and their adequate distribution according to the sector's needs is only possible if detailed information is available about the degree of concentration of the accidentality of that sector. In this context, the aim of this work is two-fold: firstly, to formalise a methodology for the fishing sector of a country which allows the inequality in the concentration of accidents to be analysed; and secondly, to apply this methodology to the Spanish fishing fleet for the period 1994-2002. Thus, indices are built by regions and by types of vessel for two variables: fishermen and vessels. Results are obtained both for the inequality in the concentration of accidents and their associated Lorenz curves and for the rates and elasticities of fishing sector accidents.
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Affiliation(s)
- C Perez-Labajos
- Ocean & Coastal Economics & Management R&D Group, University of Cantabria, Gamazo 1, 39004 Santander, Spain.
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23
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Loureiro G, Rabaça MA, Blanco B, Andrade S, Chieira C, Pereira C. Aeroallergens sensitization in an allergic paediatric population of Cova da Beira, Portugal. Allergol Immunopathol (Madr) 2005; 33:192-8. [PMID: 16045856 DOI: 10.1157/13077742] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cova da Beira is an interior central region of Portugal, with a population of 93,000 inhabitants. The first pollen counts performed in Portugal revealed the highest values of the country in this area. The aim of this study was to assess the aeroallergens sensitization in an allergic population, according to the age groups. In a 5 year period (1995-2000) 1790 consecutive outpatients were observed for suspected allergic symptoms. We included in this study all the 557 paediatric (< or = 15 years old) observed patients (317 male (57%) and 240 female (43%) with an average age of 7.6 < or = 4.2 years old). They were divided in three age groups (Group I: < or = 5 yr; Group II: 6-10 yr; Group III: 11-15 yr). 371 patients were submitted to skin prick tests to aeroallergens. 86.5% of these patients were sensitised to at least one allergen extract. The most representative aeroallergens sensitization were grasses mixture (44.9%), D. pteronyssinus (32.5%), D. farinae (29.1%), Olea europea (27.5%), Parietaria judaica (23.4%), cat dander (16.1%), Artemisia vulgaris (17.6%), Robinia pseudoacacia (12.2%), Platanus acerifolia (11.4%), Tilia cordata (11.4%) moulds mixture (11.2%), Plantago lanceolata (10.6%), dog dander (10.4%), and Pinus radiata (7.5%). The sensitisation to indoor aeroallergens, was similar in all age groups and it was less important than that of pollens. The prevalence of sensitisation to grasses was the greatest in all ages and the house dust mites sensitization was the second most prevalent. The highest pollens counts in this region could explain the early sensitisation even in young children.
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Affiliation(s)
- G Loureiro
- Immunoallergology Department, Coimbra University Hospital, Pneumology Center, Coimbra University, Portugal
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24
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Rondon J, Madrid AH, Escudero J, Moreno G, Castillo M, Viana M, Blanco B, Escobar C, Moro C. 168 Epicardial ablation in an experimental model. Evaluation of the damage of the coronary arteries: irrigated tip vs standard catheter ablation. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.29-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- J. Rondon
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | | | - G. Moreno
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - M. Viana
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - B. Blanco
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - C. Escobar
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - C. Moro
- Ramon y Cajal, Arrhythmia, Madrid, Spain
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25
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Madrid AH, Matin I, Bernal E, Castillo M, Moreno G, Escudero J, Rondon J, Viana M, Blanco B, Moro C. 889 Treatment with an Angiotensin Receptor Blocker to Maintain Sinus Rhythm in Lone Atrial Fibrillation Patients. A Prospective and Randomized Study. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.211-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
| | - I. Matin
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - E. Bernal
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - G. Moreno
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - J. Rondon
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - M. Viana
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - B. Blanco
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - C. Moro
- Ramon y Cajal, Arrhythmia, Madrid, Spain
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26
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Moreno G, Madrid AH, Rondon J, Escudero J, Castillo M, Escobar C, Blanco B, Viana M, Moro C. 40 Long-term follow-up of patients after radiofrequency catheter ablation of atrial fibrillation. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.4-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- G. Moreno
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - J. Rondon
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | | | - C. Escobar
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - B. Blanco
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - M. Viana
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - C. Moro
- Alcala University, Medicine, Alcala, Spain
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27
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Escobar C, Madrid AH, Rondon J, Escudero J, Moreno G, Castillo M, Blanco B, Viana M, Moro C. 152 Different incidence of atrial fibrillation after the treatment of typical atrial flutter. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.24-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- C. Escobar
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - J. Rondon
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - G. Moreno
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | | | - B. Blanco
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - M. Viana
- Ramon y Cajal, Arrhythmia, Madrid, Spain
| | - C. Moro
- Alcala University, Medicine, Alcala, Spain
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28
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Loureiro G, Rabaça MA, Blanco B, Andrade S, Chieira C, Pereira C. Urban versus rural environment--any differences in aeroallergens sensitization in an allergic population of Cova da Beira, Portugal? Eur Ann Allergy Clin Immunol 2005; 37:187-93. [PMID: 15984318] [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: 05/03/2023]
Abstract
Cova da Beira is an interior central region of Portugal, with a population of 93000 inhabitants divided in urban and rural living areas. The aim of this study was to access the prevalence of aeroallergens sensitisation in an allergic population, according to the urban and the rural environmental exposure and according to age. 1096 patients observed for suspected allergic symptoms, for a five-year period (1995-2000) were submitted to skin prick tests and were included in this study. They were divided in two environmental exposure groups (A: urban; B: rural) and in to four age subgroups (subgroup I: < or = 10yr; subgroup II: 11-20yr; subgroup III: 21-40yr; subgroup IV: >40yr). The total population included 444 male (40.5%) and 652 female (59.4%) with an average age of 26.5 +/- 17.2 yr. 83% of the 1096 performed SPT were positive. The frequency of aeroallergens sensitisation, comparing the urban versus the rural environment, was respectively: D. pteronyssinus 32% and 34.7%, D. farinae 28.5% and 30.7%, moulds mixture 15.3% and 12%, cat dander 17.1% and 15.2%, dog dander 11% and 10%, grasses mixture 51.3% and 36.4%, Parietaria judaica 29.4% and 14%, Olea europea 30.2% and 23.3%. The sensitisation to indoor aeroallergens, was similar in all the age subgroups and it was lower than that to pollens. There were important differences concerning the pollen sensitisation, when comparing the urban and the rural environmental exposure. We admit that pollution could enhance the sensitisation to pollens in the urban environment.
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Affiliation(s)
- G Loureiro
- Immunoallergology Department, Coimbra University Hospital, Portugal
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29
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Sanz L, Kristensen P, Blanco B, Facteau S, Russell SJ, Winter G, Alvarez-Vallina L. Single-chain antibody-based gene therapy: inhibition of tumor growth by in situ production of phage-derived human antibody fragments blocking functionally active sites of cell-associated matrices. Gene Ther 2002; 9:1049-53. [PMID: 12101437 DOI: 10.1038/sj.gt.3301725] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2001] [Accepted: 02/22/2002] [Indexed: 11/09/2022]
Abstract
Experimental evidence suggests that blocking the interactions between endothelial cells and extracellular matrix (ECM) components may provide a potent and general strategy to inhibit tumor neovascularization. Based on these considerations, we have focused our efforts on laminin, component of the vascular basement membrane of every tumor-associated vessel, which serves an essential role in tube formation. We screened anti-laminin single-chain antibody fragments (scFv) derived from a human phage-display library and identified one that blocks the formation of capillary-like structures in vitro. This scFv inhibits angiogenesis in vivo in the chick embryo chorioallantoic membrane assay and prevents the establishment and growth of subcutaneous tumors in mice, either when administered as bolus protein therapy or when produced locally by gene-modified tumor cells. Our work represents the first demonstration of a direct in vivo therapeutic effect of a single-chain antibody secreted by gene-modified mammalian cells. These results open the way for a new antibody-based gene therapy strategy of cancer.
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Affiliation(s)
- L Sanz
- Department of Immunology, Hospital Universitario Clínica Puerta de Hierro, Madrid, Spain
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30
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Squassi A, Khaszki C, Blanco B, Schnaiderman M, Scholnik L, Bonazzi M, Bordoni N. Relation between demographic and epidemiological characteristics and permanency under a dental health care program for HIV infected patients. Acta Odontol Latinoam 2002; 11:3-13. [PMID: 11885452] [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: 02/24/2023]
Abstract
The association between factors involved in health care and the health status of the people has been proven. The use of health care services, particularly in the case of patients who suffer from chronic pathologies, has been the object of many studies aimed at establishing factors which contribute to guarantee permanence in treatment and implementation of health care controls. The purpose of the present study was to identify the response of HIV infected or AIDS patients to the oral health care program and establish the association between permanence in treatment and the presence of risk factors, epidemiological or demographic conditions of the users. Ninety patients selected at random from the 300 who attended the Clinic for High Risk Patient Care, School of Dentistry, University of Buenos Aires (CLAPAR, Spanish acronym) during 1994-1995 were included in this study. The patients were assigned to one of seven groups, according to their permanence in treatment and commitment to the program during the phase of maintenance in health. Each of these categories was characterized in terms of age, sex, educational level, place of residence (CIRFS, 1990), type of job, type of health coverage and place where healthcare was received, risk behavior and date of positive serological diagnosis. The frequency of each variable was established. Contingency tables were employed to establish the statistical significance of the association between the different variables and the patient categories. The data revealed that 24.2% of the patients performed occasional or emergency consultation, 57.1% achieved discharge with or without the assistance of the social worker or are still in treatment and 18.7% abandoned the program. Significant association were found between the response to odontological treatment and the following variables: place of residence, date of positive serological diagnosis, and risk behavior. We may conclude that certain demographic, epidemiological or life-related factors would be linked to the response to odontological treatment.
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Affiliation(s)
- A Squassi
- Clinic for High Risk Patient-Care and Preventive and Community Dentistry Department, School of Dentistry, University of Buenos Aires, Argentina
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Abstract
[reaction: see text] Novel 10-membered pyrimidine enediynes (3 and 4) were synthesized in seven and eight steps, respectively. These compounds were compared for their abilities to undergo Bergman cyclization both thermally and photochemically. Alcohol 3 readily cyclized both thermally and photochemically in (i)PrOH, while ketone 4 only showed efficient thermal cyclization. Both compounds were also shown to cleave dsDNA under the appropriate conditions.
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Affiliation(s)
- N Choy
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33124, USA
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32
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Alvarez-Vallina L, Yañez R, Blanco B, Gil M, Russell SJ. Pharmacologic suppression of target cell recognition by engineered T cells expressing chimeric T-cell receptors. Cancer Gene Ther 2000; 7:526-9. [PMID: 10811469 DOI: 10.1038/sj.cgt.7700128] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Adoptive therapy with autologous T cells expressing chimeric T-cell receptors (chTCRs) is of potential interest for the treatment of malignancy. To limit possible T-cell-mediated damage to normal tissues that weakly express the targeted tumor antigen (Ag), we have tested a strategy for the suppression of target cell recognition by engineered T cells. Jurkat T cells were transduced with an anti-hapten chTCR tinder the control of a tetracycline-suppressible promoter and were shown to respond to Ag-positive (hapten-coated) but not to Ag-negative target cells. The engineered T cells were then reacted with hapten-coated target cells at different effector to target cell ratios before and after exposure to tetracycline. When the engineered T cells were treated with tetracycline, expression of the chTCR was greatly decreased and recognition of the hapten-coated target cells was completely suppressed. Tetracycline-mediated suppression of target cell recognition by engineered T cells may be a useful strategy to limit the toxicity of the approach to cancer gene therapy.
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Affiliation(s)
- L Alvarez-Vallina
- Department of Immunology, Hospital Universitario Clínica Puerta de Hierro, Madrid, Spain.
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33
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Correa R, Blanco B, Del Río M, Víctor V, Guayerbas N, Medina S, De la Fuente M. Effect of a diet supplemented with thioproline on murine macrophage function in a model of premature ageing. Biofactors 1999; 10:195-200. [PMID: 10609882 DOI: 10.1002/biof.5520100216] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A previous study has shown that diet supplementation with thioproline (thiazolidine-4-carboxylic acid, TCA), an intracellular sulfhydril antioxidant and free radical scavenger, stimulates lymphocyte functions in old mice. In the present work, the effect of thioproline ingestion on the phagocytic functions of peritoneal macrophages, namely adherence, chemotaxis, phagocytosis and superoxide anion production was studied in adult female OF1-Swiss mice, that were fed thioproline (0.1% w/w) for five weeks, starting this ingestion at the age of 22 +/- 2 weeks. Mice were divided into a fast and a slow group based on their exploratory activity, which was assessed by their performance in a T-shaped maze. Slow mice showed a worse phagocytic activity with respect to fast animals. After thioproline treatment, a stimulation of all the functions studied as well as a neutralization of the superoxide radical were observed. The effect of this antioxidant was stronger in the slow than in the fast group. Thus, a diet supplemented with thioproline may enhance the immune functions, especially when they are depressed.
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Affiliation(s)
- R Correa
- Department of Animal Biology II (Animal Physiology), Faculty of Biology, Complutense University, Madrid, Spain
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34
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Blanco B, Ferrández MD, Correa R, Del Rio M, Guaza C, Hernanz A, De la Fuente M. Changes in several functions of murine peritoneal macrophages by N-acetylcysteine and thioproline ingestion. Comparative effect between two strains of mice. Biofactors 1999; 10:179-85. [PMID: 10609880 DOI: 10.1002/biof.5520100214] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The administration of the thiol compounds, N-acetylcysteine (NAC) and in particular thioproline (thiazolidine-4-carboxylic acid) at 0.1% w/w concentration in the diet, improves lymphocyte functions in old female Swiss mice, as has been shown in our previous studies. In the present work, adult mice from two different strains, namely BALB/c (an inbred strain) and OF1-Swiss (noninbred strain), were fed a diet supplemented with the above dose of each thiol compound jointly for five weeks. At 28 weeks of age, peritoneal cell suspensions were obtained and different steps of the phagocytic process, the most representative activity of macrophages, as well as interleukin-1beta (IL-1beta) production, were studied. Thus, adherence to substrate, mobility directed to a chemoattractant gradient (chemotaxis), ingestion of inert particles and superoxide anion production were analysed. The results show that diet supplementation with NAC plus thioproline increased all macrophage functions studied with the exception of superoxide anion production, which was decreased. These effects were more evident in macrophages from Swiss mice, whereas in BALB/c mice the stimulation of phagocytosis and IL-1beta production was lower and no differences were seen after treatment in adherence and superoxide anion production. These data suggest that immune function can be improved in adult mice by administration of the above thiol compounds, especially in the noninbred strain of OF1-Swiss mice.
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Affiliation(s)
- B Blanco
- Department of Animal Physiology, Faculty of Biology, Complutense University, Madrid, Spain
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35
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Frías S, Ordaz G, Blanco B, Molina B, del Castillo V, Carnevale A. [Detection of aneuploidies using in situ hybridization in cells of the oral mucosa]. Rev Invest Clin 1996; 48:355-60. [PMID: 9005512] [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: 02/03/2023]
Abstract
Aneuploidies have been traditionally diagnosed by chromosome analysis, however this method may be difficult to perform in certain cellular types or in severely ill patients. With the fluorescence in situ hybridization (FISH) technique it is possible to identify the number of specific chromosomes in interphase cells. In the present study we analyzed exfoliated epithelial cells from the oral mucosa of 15 patients with trisomy 21, and in six patients with mosaicism; five normal subjects were included for comparison. To allow the probe to reach its target DNA we first treated the keratin-surrounded membrane with pepsin during 20 minutes. In the 15 cases of trisomy 21, the cells showed five fluorescent signals indicating the presence of three chromosomes 21 and two 13, while the normal subjects showed four signals. In one girl with Turner syndrome and a karyotype 46,X+mar, the FISH analysis in 1000 cells revealed that the marker derived from chromosome X and there was a mosaicism 45,X/46,X,r(X). In the other patients with mosaicisms, we observed variations in the proportions of cells but the differences were not significant. In conclusion, interphase FISH on buccal cells showed to be a rapid, effective and non-invasive method for the diagnosis of chromosome aberrations, particularly when the cytogenetic study on lymphocytes is difficult to perform.
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Affiliation(s)
- S Frías
- Departamento de Investigación en Genética Humana, Instituto Nacional de Pediatría, México D.F
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36
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Suter W, Ahiabor R, Blanco B, Locher F, Mantovani F, Robinson M, Sreenan G, Staedtler F, Swingler T, Vignutelli A, Perentes E. Evaluation of the in vivo genotoxic potential of three carcinogenic aromatic amines using the Big Blue transgenic mouse mutation assay. Environ Mol Mutagen 1996; 28:354-362. [PMID: 8991064 DOI: 10.1002/(sici)1098-2280(1996)28:4<354::aid-em9>3.0.co;2-b] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Three genotoxic mouse carcinogens, 4-chloro-o-phenylenediamine (4-C-o-PDA), 2-nitro-p-phenylenediamine (2-N-p-PDA), and 2,4-diaminotoluene (2,4-DAT), were tested in the Big Blue transgenic mouse mutation assay. Each experiment consisted of a vehicle control group with ten Big Blue C57BL/6 mice, five of either sex, and an equally sized group treated with a high dose of the test chemical. In addition, four animals were treated with the vehicle and six animals with the test compound for the measurement of bromodeoxyuridine (BrdU) incorporation to determine cellular proliferation. Prior to the mutagenicity experiments, the maximally tolerated dose of each compound was determined using nontransgenic C57BL/6 mice. Based on these results the doses used in the main study were 200 mg/kg/day for 4-C-o-PDA, 150 mg/kg/ day for 2-N-p-PDA, and 80 mg/kg/day for 2,4-DAT. Animals were treated for 10 days over a 2 week period and were killed 10 days after the ast treatment. In an additional experiment with 2,4-DAT, animals were killed 28 days after treatment. Since all three chemicals are liver carcinogens in the mouse, the DNA of the liver was analyzed using the standard procedures for the Big Blue assay. Hepatocyte proliferation was assessed by immunohistochemical detection of proliferating cell nuclear antigen (PCNA) and, in some studies, by measuring BrdU incorporation. 4-C-o-PDA and 2-N-p-PDA did not induce an increase in PCNA expression when measured 10 days after the last treatment. There was no increase in BrdU incorporation immediately after treatment with 4-C-o-PDA or with 2,4-DAT. However, 10 days after the last treatment with 2,4-DAT, a strong mitogenic effect was found with both techniques, i.e., in the PCNA and BrdU assays. 4-C-o-PDA, a liver carcinogen in both genders of mice, induced a small, statistically significant increase of the mutant frequencies in females. No increase was found in males. 2-N-p-PDA, which has been reported to induce liver tumors only in females, was found positive in males and was clearly negative in females. 2,4-DAT, a liver carcinogen in female mice, was positive in females and negative in males when the animals were killed 10 days after the last treatment. After an expression time of 28 days, 2,4-DAT induced a statistically significant increase in both sexes. The effect in females was marginally stronger than after 10 days' expression time and almost identical to the effect observed in males under these test conditions. In conclusion, the experiments showed that the Big Blue assay detects the genotoxicity of the three carcinogenic monocyclic aromatic amines tested. However, it seems that the sex specificity of the carcinogenic effects of these compounds is not reflected by the mutagenicity data in Big Blue mice.
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Affiliation(s)
- W Suter
- Sandoz Pharma Ltd., Basel, Switzerland
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37
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González-del-Angel A, Blanco B, del Castillo V, Carnevale A. [Identification of sex chromosome markers using fluorescence in situ hybridization (FISH)]. Rev Invest Clin 1995; 47:117-25. [PMID: 7610280] [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: 01/26/2023]
Abstract
From 6 to 15% of the patients with Turner syndrome have a mosaic karyotype, i.e. a 45,X cell line and another with a small sex chromosome marker of undetermined origin which may be a ring or a centric fragment. It is important to establish whether this marker chromosome derives from a Y chromosome as this implies that the patient has a high risk of developing gonadoblastoma. The objective of the present paper was to identify the origin of small sex chromosome markers using fluorescence in situ hybridization (FISH). Eight patients were studied; seven had a Turner phenotype and one had a short stature with ambiguous genitalia. In all cases karyotype in peripheral lymphocytes showed mosaicism, with one cell line that had a sex chromosome marker, and in three cases, the mosaicism was corroborated in fibroblast cultures. Biotin labeled DNA probes with complementary centromeric alpha-satellite sequences of chromosomes X and Y were used in the FISH technique. In seven patients the chromosome marker came from the X chromosome as established with the X chromosome alpha-satellite probe. In the patient with ambiguous genitalia, the marker did derive from the Y chromosome. We conclude that the FISH technique proved to be useful to establish the origin of sex chromosome markers in our laboratory.
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Affiliation(s)
- A González-del-Angel
- Departamento de Investigación en Genética Humana, Instituto Nacional de Pediatría, México, D.F
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38
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Abstract
A patient with Turner phenotype was found to carry two de novo chromosome aberrations: a 45,X line and a whole arm reciprocal translocation t(3;9). Fluorescence in situ hybridisation on metaphase cells using alpha satellite DNA for chromosome 3 and beta satellite and 'classical' satellite DNA for chromosome 9 showed that the centromeric region of chromosome 3 was retained in the 3q9q translocation derivative, as was the secondary constriction heterochromatin of chromosome 9. No signals were observed in the 3p9p derivative with the three probes. This suggests that the breakpoints were on 3p11 and 9q11. The karyotype was 45,X,t(3;9)(3qter-->3p11::9q11-->9qter; 9qter-->9q11::3p11-->3pter).
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Affiliation(s)
- B Blanco
- Department of Genetics, Instituto Nacional de Pediatría, México DF, México
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39
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Suarez MA, Blanco B, Brion LP, Schulman M, Calvelli TA, Youchah J, Devash Y, Rubinstein A, Goldstein H. A rapid test for the detection of human immunodeficiency virus antibodies in cord blood. J Pediatr 1993; 123:259-61. [PMID: 8345422 DOI: 10.1016/s0022-3476(05)81698-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A commercially available rapid test (HIVCHEK) was compared with an enzyme-linked immunosorbent assay (ELISA) for identifying human immunodeficiency virus type 1 in the serum of newborn infants. Of 1309 cord blood samples tested, the HIVCHEK test detected all the true-positive samples detected by ELISA. Of the 35 samples with positive ELISA results, six had negative results on Western blot; only 1 of the 30 samples with positive HIVCHEK results had negative results on Western blot. Thus the HIVCHEK test can be used to facilitate the rapid identification of HIV-1 in the serum of newborn infants.
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Affiliation(s)
- M A Suarez
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461
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40
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Herzberg O, Kapadia G, Blanco B, Smith TS, Coulson A. Structural basis for the inactivation of the P54 mutant of beta-lactamase from Staphylococcus aureus PC1. Biochemistry 1991; 30:9503-9. [PMID: 1892849 DOI: 10.1021/bi00103a017] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The crystal structure of a mutant protein of a class A beta-lactamase from Staphylococcus aureus PC1, in which Asp179 is replaced by an asparagine (P54), has been determined and refined at 2.3-A resolution (1 A = 0.1 nm). The resulting crystallographic R factor [formula: see text] are the observed and calculated structure factor amplitudes) is 0.181 for 12289 reflections with I greater than or equal to sigma (I) within the 6.0-2.3-A resolution range. The mutated residue is located at the C-terminus of an extensive loop (the omega-loop), remote from the active site, and results in a drastically reduced activity. Examination of the native and P54 structures reveals that the overall fold is similar, except that there is substantial disorder of the omega-loop of P54. This is a consequence of the elimination of a salt bridge between Asp179 and Arg164 that links the two ends of the omega-loop in native beta-lactamase. It is associated with a difference in side-chain conformation between Asn179 in P54 and Asp179 in the native structure. An alternate interaction occurs in P54 between Asn179 and Ala69, adjacent to the catalytic Ser70. This disorder affects catalysis since some of the disordered residues, in particular Glu166, form part of the active site.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- O Herzberg
- Center for Advanced Research in Biotechnology, Maryland Biotechnology Institute, University of Maryland, Rockville 20850
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41
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Rey J, Bello M, de Campos J, Kusak M, Vaquero J, Blanco B, Sarasa J, Pestaña A. A cytogentic study of brain tumors with a major oligodendroglial component. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0165-4608(91)90538-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Ortiz de Zárate G, Carnevale A, Frías S, Molina B, Blanco B. [Effect of gamma radiations on robertsonian translocations]. Rev Invest Clin 1991; 43:151-6. [PMID: 1947470] [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: 12/29/2022]
Abstract
Centromeric breaks and the dissociation of Robertsonian translocations have been regarded as the possible cause of a few reported cases of mosaicism. In a previous study we suggested that the dissociative phenomenon is influenced by an instability of the point of fusion, when it is located on a heterochromatic region, which appears to be a preferential mitomycin C (MMC) breakpoint. In this study lymphocytes from 6 robertsonian translocation carriers were treated with gamma rays. In one case who was a mosaic, the MMC induced a statistically significant increase in the number of cells with the dissociation. In the remaining cases, centromeric breaks or complete fissions were observed in 1.8% of the cells. In addition, the analysis of the distribution of breakage points on heterochromatic or euchromatic regions showed that almost 50% of the breaks on translocation chromosomes were located on pericentromeric heterochromatin. We postulate that the dissociation which occurs in robertsonian translocations may be caused by instability of the point of fusion since it is located on a heterochromatic region, susceptible to breakage by clastogenic agents such as MMC and gamma rays.
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Carnevale A, Zavaleta MJ, Blanco B, Rodríguez Weber M. [Effect of phototherapy on the chromosomes of jaundiced newborn infants]. Rev Invest Clin 1988; 40:125-8. [PMID: 3175365] [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: 01/04/2023]
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44
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Lacassie Y, Blanco B, Boehme V, Norambuena A. [FG syndrome: report of 4 cases with agenesis of the corpus callosum]. Rev Chil Pediatr 1986; 57:531-6. [PMID: 3671828] [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: 01/06/2023]
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45
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Carnevale A, Mayén DG, Blanco B. [Pericentric inversion of chromosome 7 associated with 45,X Turner syndrome ]. Rev Invest Clin 1986; 38:425-8. [PMID: 3563146] [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: 01/06/2023]
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46
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Blanco B, Avila E, Carnevale A. [Analysis of chromosomal changes and sister chromatid exchanges in lymphocytes of children exposed to cerebral gammagraphy]. Rev Invest Clin 1985; 37:337-40. [PMID: 3912877] [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: 01/08/2023]
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47
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Blanco B, Castillo J, Frías S, Carnevale A. [C band polymorphisms of chromosomes 1, 9 and 16 in families with children with Down's syndrome (author's transl)]. Rev Invest Clin 1982; 34:49-52. [PMID: 6211754] [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: 01/19/2023]
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48
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Carnevale A, Blanco B, Dora Moya J. [Frequency of Ag-stained NOR and satellite associations in four 14/21 translocation carriers and in their normal relatives (author's transl)]. Rev Invest Clin 1981; 33:365-8. [PMID: 6173908] [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: 01/18/2023]
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49
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Carnevale A, Blanco B, Frías S, Castillo J, Vázquez V. [Cytogenetics in pediatric practice. Experience of 10 years (author's transl)]. Rev Invest Clin 1981; 33:175-81. [PMID: 7291763] [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: 01/24/2023]
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50
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Zavala C, Arroyo P, Lisker R, Carnevale A, Salamanca F, Navarrete JI, Jiménez FM, Blanco B, Vázquez V, Sánchez J, Canún S. Variability between and within laboratories in the analysis of structural chromosomal abnormalities. Clin Genet 1979; 15:377-81. [PMID: 445862 DOI: 10.1111/j.1399-0004.1979.tb01769.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The frequency of structural chromosomal aberrations in two samples (AM and PM of the same day) from each of nine normal subjects, cultured in two different laboratories, was studied by six observers. The results were analyzed in order to determine the relative importance of inter- and intralaboratory factors in the variability of chromosomal abnormalities. In addition to the difference in the frequency of the abnormalities between the subjects studied, there were differences due to observers from different laboratories (P less than 0.01), as well as between laboratories (P less than 0.01). These results could be explained in part by insufficient agreement between observers from different laboratories and by differences in the quality of the method used.
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