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Martínez-Sanz E, Catón J, Maldonado E, Murillo-González J, Barrio MC, Paradas-Lara I, García-Serradilla M, Arráez-Aybar L, Mérida-Velasco JR. Study of the functional relationships between the buccinator muscle and the connective tissue of the cheek in humans. Ann Anat 2023; 246:152025. [PMID: 36375681 DOI: 10.1016/j.aanat.2022.152025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/17/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND The buccinator muscle derives from the mesenchyme of the second pharyngeal arch. In adults, it has a quadrilateral shape, occupying the deepest part of the cheek region. Its function is complex, being active during swallowing, chewing, and sucking. To our knowledge, there are no studies that have specifically analyzed the relationship of the buccinator muscle fibers and neighboring connective tissue of the cheek in humans, neither during development nor in adults. Such relationships are fundamental to understand its function. Thus, in this study the relations of the buccinator muscle with associated connective tissue were investigated. METHODS The buccinator muscle region was investigated bilaterally in 41 human specimens of 8-17 weeks of development. Moreover, four complete adult tissue blocks from human cadavers (including mucosa and skin) were obtained from the cheek region (between the anterior border of the masseter muscle and the nasolabial fold). All samples were processed with standard histological techniques. In addition, subsets of sections were stained with picrosirius red (PSR). Furthermore, immunoreactivity against type I and III collagen was also studied in adult tissues. RESULTS The buccinator muscle showed direct relationships with its connective tissue from 8 to 17 weeks of development. Collagen fibers were arranged in septa from the submucosa to the skin through the muscle. These septa were positive for type I collagen and presented elastic fibers. Fibrous septa that were positive for type III collagen were arranged from the lateral side of the muscle to the skin. CONCLUSIONS The intimate relationship between buccinator muscle fibers and cheek connective tissue may explain the complex functions of this muscle.
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Affiliation(s)
- Elena Martínez-Sanz
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Plaza de Ramón y Cajal, s/n, Ciudad Universitaria, 28040 Madrid, Spain
| | - Javier Catón
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Plaza de Ramón y Cajal, s/n, Ciudad Universitaria, 28040 Madrid, Spain.
| | - Estela Maldonado
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Plaza de Ramón y Cajal, s/n, Ciudad Universitaria, 28040 Madrid, Spain
| | - Jorge Murillo-González
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Plaza de Ramón y Cajal, s/n, Ciudad Universitaria, 28040 Madrid, Spain
| | - María Carmen Barrio
- Department of Anatomy and Embryology, Faculty of Optics and Optometry, Complutense University of Madrid, Calle de Arcos de Jalón, 118, 28037 Madrid, Spain
| | - Irene Paradas-Lara
- Department of Anatomy and Embryology, Faculty of Optics and Optometry, Complutense University of Madrid, Calle de Arcos de Jalón, 118, 28037 Madrid, Spain
| | - Moisés García-Serradilla
- Department of Anatomy and Embryology, Faculty of Optics and Optometry, Complutense University of Madrid, Calle de Arcos de Jalón, 118, 28037 Madrid, Spain
| | - Luis Arráez-Aybar
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Plaza de Ramón y Cajal, s/n, Ciudad Universitaria, 28040 Madrid, Spain
| | - José Ramón Mérida-Velasco
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Plaza de Ramón y Cajal, s/n, Ciudad Universitaria, 28040 Madrid, Spain
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Castiglione JI, Crespo JM, Lecchini L, Silveira FO, Luis MB, Cotti N, Simison CJ, Aguirre F, Piedrabuena MA, Alonso RN, Azcona CL, Sosa PS, Maldonado E, Barroso F. Bilateral facial palsy with paresthesias, variant of Guillain-Barré syndrome following COVID-19 vaccine: A case series of 9 patients. Neuromuscul Disord 2022; 32:572-574. [PMID: 35644722 PMCID: PMC9090822 DOI: 10.1016/j.nmd.2022.05.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 04/24/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022]
Abstract
Several cases of Guillain-Barré Syndrome (GBS) associated with COVID-19 vaccination have been reported, including the rare subtype known as Bilateral Facial Palsy with paresthesias (BFP). To date, it is not known whether a causal relationship may exist between the two. We report 9 cases of BFP in patients vaccinated against COVID-19 in the previous month. Nerve conduction studies revealed demyelinating polyneuropathy in 4 patients, and 5 presented bilateral, focal facial nerve involvement, exclusively. Ganglioside antibody panel was positive in 4 patients (anti-GM1=2, anti-GD1a=1 and anti-sulfatide=1). Seven patients received intravenous immunoglobulin treatment, one plasma exchange, and one patient died from sudden cardiac arrest following arrhythmia before treatment could be administered. Rates of BFP following COVID-19 vaccination, did not differ from those reported in previous series. Epidemiological studies are essential to determine whether a causal relationship may exist between this rare form of GBS and COVID-19 vaccination.
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Affiliation(s)
- J I Castiglione
- Neurology Department, Raul Carrea Institute for Neurological Research (FLENI), Montañeses 2325, Buenos Aires 1428, Argentina.
| | - J M Crespo
- Neurology Department, Raul Carrea Institute for Neurological Research (FLENI), Montañeses 2325, Buenos Aires 1428, Argentina; Hospital Nacional Alejandro Posadas, Argentina; Hospital Italiano de Buenos Aires, Argentina; Sanatorio Güemes, Argentina
| | - L Lecchini
- Hospital Nacional Alejandro Posadas, Argentina
| | | | | | - N Cotti
- Sanatorio de los Arcos, Argentina
| | | | - F Aguirre
- Hospital J.M. Ramos Mejía, Argentina
| | | | | | - C L Azcona
- Hospital Italiano de Buenos Aires, Argentina
| | - P S Sosa
- Hospital Italiano de Buenos Aires, Argentina
| | - E Maldonado
- Hospital Nacional Alejandro Posadas, Argentina
| | - F Barroso
- Neurology Department, Raul Carrea Institute for Neurological Research (FLENI), Montañeses 2325, Buenos Aires 1428, Argentina
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3
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Sanchez N, Vignoletti F, Sanz-Martin I, Coca A, Nuñez J, Maldonado E, Sanz-Esporrin J, Hernando-Pradíes I, Santamaría S, Herrera D, Garcia-Sanz JA, Sanz M. Cell Therapy Based on Gingiva-Derived Mesenchymal Stem Cells Seeded in a Xenogeneic Collagen Matrix for Root Coverage of RT1 Gingival Lesions: An In Vivo Experimental Study. Int J Mol Sci 2022; 23:ijms23063248. [PMID: 35328670 PMCID: PMC8950013 DOI: 10.3390/ijms23063248] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/12/2022] [Accepted: 03/15/2022] [Indexed: 12/05/2022] Open
Abstract
(1) Background: To investigate the effect of a xenogeneic collagen matrix (CMX) seeded with autologous gingiva-derived mesenchymal cells (GMSCs) when combined with a coronally advanced flap (CAF) in the treatment of localized gingival recession type 1 (RT1). (2) Methods: Dehiscence-type defects were created in seven dogs. GMSCs were isolated, transfected with a vector carrying green fluorescent protein (GFP) and expanded. Once chronified, the defects were randomly treated with (1) CAF plus the combination of CMX and GFP+ GMSCs, (2) CAF plus CMX with autologous fibroblasts, (3) CAF plus CMX and (4) CAF alone. Histological and clinical outcomes at 2- and 6-week healing periods were analyzed and compared among groups. (3) Results: Histologically, the addition of autologous cells to the CMX resulted in reduced inflammation and a variable degree of new cementum/bone formation. CMX plus GMSCs resulted in greater mean recession reduction (1.42; SD = 1.88 mm) and percentage of teeth with recession reduction of ≥2 mm (57%) when compared to the other groups, although these differences were not statistically significant. (4) Conclusions: The histometric and clinical results indicated a positive trend favouring the combination of CMX and GMSCs with the CAF when compared to the groups without cells, although these differences were not statistically significant.
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Affiliation(s)
- Nerea Sanchez
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Fabio Vignoletti
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Ignacio Sanz-Martin
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Alejandro Coca
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Javier Nuñez
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Estela Maldonado
- Department of Anatomy and Embryology, Faculty of Medicine, University Complutense, 28040 Madrid, Spain;
| | - Javier Sanz-Esporrin
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Irene Hernando-Pradíes
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Silvia Santamaría
- Margarita Salas Center for Biological Research (CIB-CSIC), 28040 Madrid, Spain; (S.S.); (J.A.G.-S.)
| | - David Herrera
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
| | - Jose A. Garcia-Sanz
- Margarita Salas Center for Biological Research (CIB-CSIC), 28040 Madrid, Spain; (S.S.); (J.A.G.-S.)
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal and Peri-implant Diseases) Research Group, School of Dentistry, University Complutense, 28040 Madrid, Spain; (N.S.); (F.V.); (I.S.-M.); (A.C.); (J.N.); (J.S.-E.); (I.H.-P.); (D.H.)
- Correspondence:
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Sala R, Absalon-Medina V, Reamsnyder T, Maldonado E, Smith W, Fricke V, Moreno J, Garcia-Guerra A. 124 Reutilisation of intravaginal progesterone devices during fixed-time artificial insemination with sex-sorted semen in dairy heifers. Reprod Fertil Dev 2021; 34:299-300. [PMID: 35231262 DOI: 10.1071/rdv34n2ab124] [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: 11/23/2022] Open
Affiliation(s)
- R Sala
- STgenetics, South Charleston, OH, USA
| | | | | | | | - W Smith
- STgenetics, South Charleston, OH, USA
| | - V Fricke
- STgenetics, South Charleston, OH, USA
| | | | - A Garcia-Guerra
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
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Maldonado E, Martínez-Sanz E, Partearroyo T, Varela-Moreiras G, Pérez-Miguelsanz J. Maternal Folic Acid Deficiency Is Associated to Developing Nasal and Palate Malformations in Mice. Nutrients 2021; 13:251. [PMID: 33467180 PMCID: PMC7830789 DOI: 10.3390/nu13010251] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/25/2020] [Accepted: 01/14/2021] [Indexed: 11/25/2022] Open
Abstract
Craniofacial development requires extremely fine-tuned developmental coordination of multiple specialized tissues. It has been evidenced that a folate deficiency (vitamin B9), or its synthetic form, folic acid (FA), in maternal diet could trigger multiple craniofacial malformations as oral clefts, tongue, or mandible abnormalities. In this study, a folic acid-deficient (FAD) diet was administered to eight-week-old C57/BL/6J female mouse for 2-16 weeks. The head symmetry, palate and nasal region were studied in 24 control and 260 experimental fetuses. Our results showed a significant reduction in the mean number of fetuses per litter according to maternal weeks on FAD diet (p < 0.01). Fetuses were affected by cleft palate (3.8%) as well as other severe congenital abnormalities, for the first time related to maternal FAD diet, as head asymmetries (4.6%), high arched palate (3.5%), nasal septum malformed (7.3%), nasopharynx duct shape (15%), and cilia and epithelium abnormalities (11.2% and 5.8%). Dysmorphologies of the nasal region were the most frequent, appearing at just four weeks following a maternal FAD diet. This is the first time that nasal region development is experimentally related to this vitamin deficiency. In conclusion, our report offers novel discoveries about the importance of maternal folate intake on midface craniofacial development of the embryos. Moreover, the longer the deficit lasts, the more serious the consequent effects appear to be.
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Affiliation(s)
- Estela Maldonado
- Departamento de Anatomía y Embriología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain; (E.M.-S.); (J.P.-M.)
- Grupo UCM de Investigación nº 920202 “Investigación en Desarrollo del Paladar y Fisura Palatina. Desarrollo Craneofacial”, Facultad de Odontología, Plaza de Ramón y Cajal, 3, 28040 Madrid, Spain
| | - Elena Martínez-Sanz
- Departamento de Anatomía y Embriología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain; (E.M.-S.); (J.P.-M.)
- Grupo UCM de Investigación nº 920202 “Investigación en Desarrollo del Paladar y Fisura Palatina. Desarrollo Craneofacial”, Facultad de Odontología, Plaza de Ramón y Cajal, 3, 28040 Madrid, Spain
| | - Teresa Partearroyo
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Alcorcón, 28925 Madrid, Spain; (T.P.); (G.V.-M.)
- Grupo USP-CEU de Excelencia “Nutrición para la vida (Nutrition for life)”, ref: E02/0720, Alcorcón, 28925 Madrid, Spain
| | - Gregorio Varela-Moreiras
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Alcorcón, 28925 Madrid, Spain; (T.P.); (G.V.-M.)
- Grupo USP-CEU de Excelencia “Nutrición para la vida (Nutrition for life)”, ref: E02/0720, Alcorcón, 28925 Madrid, Spain
| | - Juliana Pérez-Miguelsanz
- Departamento de Anatomía y Embriología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain; (E.M.-S.); (J.P.-M.)
- Grupo UCM de Investigación nº 911308 “Mecanismos Moleculares Cronobiológicos”, Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), C/ del Prof. Martín Lagos, s/n, 28040 Madrid, Spain
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Murillo-González JA, Notario B, Maldonado E, Martinez-Sanz E, Barrio MC, Herrera M. Connections between the internal and the external capsules and the globus pallidus in the sheep: A dichromate stain X-ray microtomographic study. Anat Histol Embryol 2020; 50:84-92. [PMID: 32794251 DOI: 10.1111/ahe.12604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/24/2020] [Indexed: 11/28/2022]
Abstract
Sheep are recognized as useful species for translational neurodegeneration research, in particular for the study of Huntington disease. There is a lack of information regarding the detailed anatomy and connections of the basal ganglia of sheep, in normal myeloarchitectonics and in tract-tracing studies. In this work, the organization of the corticostriatal projections at the level of the putamen and globus pallidus (GP) are explored. For the first time, the myeloarchitectonic pattern of connections between the internal (IC) and the external (EC) capsules with the GP have been investigated in the sheep. Formaldehyde-fixed blocks of the striatum were treated with a metallic stain containing potassium dichromate and visualized using micro-CT (µ-CT). The trivalent chromium (Cr3+), attached to myelin phospholipids, imparts a differential contrast to the grey and white matter compartments, which allows the visualization of myelinated fascicles in µ-CT images. The fascicles were classified according to their topographical location in dorsal supreme fascicles (X, Y, apex) arising from the IC and EC; pre-commissurally, basal fascicles connecting the ventral part of the EC with the lateral zone of the ventral pallidum (VP) and, post-commissurally, superior (Z1 ), middle (Z2 ) and lower (Z3 ) fascicles, connecting at different levels the EC with the GP. The results suggest that the presumptive cortical efferent and afferent fibres to the pallidum could be organized according to a dorsal to ventrolateral topography in the sheep, similar to that seen in other mammals. The proposed methodology has the potential to delineate the myeloarchitectonic patterns of nervous systems and tracts.
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Affiliation(s)
| | - Belen Notario
- Microcomputed Tomography Lab, Centro Nacional de Investigación sobre la Evolución Humana, CENIEH, Burgos, Spain
| | - Estela Maldonado
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Elena Martinez-Sanz
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - M Carmen Barrio
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Manuel Herrera
- Department of Anatomy and Embryology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
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Martínez-Villa S, Sanz-Martín I, Maldonado E, Virto L, Sanz-Esporrín J, Sanz M. Immunohistochemical, histomorphometric, and gingival crevicular fluid analysis of residual and shallow periodontal pockets in patients with periodontitis Stages III and IV. J Periodontol 2020; 91:870-879. [PMID: 31858601 DOI: 10.1002/jper.19-0035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 08/07/2019] [Accepted: 09/23/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND To study the differences between shallow and residual periodontal pockets in patients with periodontitis (Stages III and IV) after non-surgical periodontal treatment. METHODS Twenty patients diagnosed of periodontitis who were scheduled for periodontal surgery were included. In each patient, a palatal shallow site (≤3 mm) and a residual site (≥5 mm) were selected and GCF samples were processed by Luminex® analysis to determine the concentrations of interleukins (IL-1β, IL-6, IL-10, and IL-17a). During the periodontal surgery gingival biopsies were collected and processed for histo-morphometric and immunohistochemical evaluation to determine the extent of connective tissue inflammatory infiltrate (CTII) using the following markers (CD4, CD5, CD8, CD14, CD19, Elastase, and Syndecan). Mean differences between shallow and residual pockets samples, as well as correlations between GCF cytokine concentrations, area of CTII, and cellularity of the CTII were calculated. RESULTS A total of 15 patients were finally included, with analysis of 30 histological specimens and 30 GCF samples. Residual pockets presented significantly higher mean GCF volume, higher mean area of CTII and higher concentrations of IL-1β and IL-6 in GCF than shallow pockets. A significant correlation was detected between IL-10 levels and the CTII area, IL-10 and the percentage of Syndecan, and the area of CTII and the percentages of CD14 and Syndecan. CONCLUSIONS The concentration of GCF cytokines did not correlate with the area of CTII measured histologically. A residual CTII and elevated concentrations of proinflammatory cytokines and cells were present in all sites 2 months after non-surgical treatment. The lack of healthy controls does not allow to establish differences between both groups.
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Affiliation(s)
- Sergio Martínez-Villa
- Section of Graduate Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Ignacio Sanz-Martín
- Section of Graduate Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Estela Maldonado
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group: Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Leire Virto
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group: Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Javier Sanz-Esporrín
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group: Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group: Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
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Taso E, Stefanovic V, Gaudin A, Grujic J, Maldonado E, Petkovic-Curcin A, Vojvodic D, Sculean A, Rakic M. Effect of dental caries on periodontal inflammatory status: A split-mouth study. Arch Oral Biol 2019; 110:104620. [PMID: 31791000 DOI: 10.1016/j.archoralbio.2019.104620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 11/15/2019] [Accepted: 11/17/2019] [Indexed: 01/22/2023]
Abstract
OBJECTIVE This controlled split-mouth study aimed to estimate the effect of caries and related treatment on concentrations of interleukin (IL)-2, interferon (IFN)-γ, IL-12, IL-17A, IL-13, IL-10, IL-6, IL-5, IL-4, IL-22, tumor necrosis factor (TNF)-α, and IL1-β in gingival crevicular fluid (GCF) of caries affected teeth before (B), 7 (7D) and 30 (30D) days post-treatment and to compare them with concentrations from healthy teeth. DESIGN Study population included 81 systemically and periodontally healthy non-smokers exhibiting at least one shallow occlusal/ inter-proximal caries and one healthy tooth from the same morphologic group at the contralateral position. Following clinical exam, the GCF samples were collected baseline as well as 7D and 30D, while the biomarker measurement was performed using multiplex flowcytometry. RESULTS Caries affected teeth exhibited significantly higher levels of IFN-γ, IL-1β, IL-2, IL-4 and IL-6 when compared to healthy teeth. Post-treatment cytokines levels showed general trend of increase when compared to baseline, that was significant for IL-22 and IL-17 at 7D, while IFN-γ was significantly increased at 7D compared to the healthy teeth. At 30D, IFN-γ, TNF-α, IL-17 and IL-4 levels were significantly increased when compared to healthy teeth, while IL-2 levels were significantly higher than baseline levels. CONCLUSION Considering significantly increased periodontal levels of inflammatory markers in caries affected teeth and in response to performed treatment, it seems that dental caries and related restorative treatment might contribute to periodontal inflammation via additive effects already in early-stage caries.
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Affiliation(s)
- Ervin Taso
- Clinic for Stomatology, Military Medical Academy, Crnotravska 17, Belgrade, Serbia
| | - Vladimir Stefanovic
- Clinic for Stomatology, Military Medical Academy, Crnotravska 17, Belgrade, Serbia
| | - Alexis Gaudin
- Faculty of Dental Surgery, University of Nantes, Nantes, France; Inserm, U1229, Regenerative Medicine and Skeleton Research, RMeS, CHU Nantes, PHU 4 OTONN, 1 Place Alexis-Ricordeau, Nantes, France
| | - Jovan Grujic
- Faculty of Medicine, University of Belgrade, Dr. Subotica 8, Belgrade, Serbia
| | - Estela Maldonado
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense of Madrid, Pza. Ramón y Cajal, s/n, Madrid, Spain
| | - Aleksandra Petkovic-Curcin
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, Serbia; Medical Faculty, University of Defence, Belgrade, Serbia
| | - Danilo Vojvodic
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, Serbia; Medical Faculty, University of Defence, Belgrade, Serbia
| | - Anton Sculean
- Faculty of Dental Medicine, University of Bern, Freiburgstrasse 7, Bern, Switzerland
| | - Mia Rakic
- ETEP (Etiology and Therapy of Periodontal Diseases) Research Group, Faculty of Dentistry, University Complutense of Madrid, Pza. Ramón y Cajal, s/n, Madrid, Spain; Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia.
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9
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Hill B, Switchenko J, Martin P, Churnetski M, Sawalha Y, Goyal S, Shanmugasundaram K, Calzada O, Kolla B, Bachanova V, Gerson J, Barta S, Maldonado E, Gordon M, Danilov A, Grover N, Mathews S, Burkart M, Karmali R, Ghosh N, Park S, Epperla N, Bond D, Badar T, Blum K, Guo J, Hamadani M, Fenske T, Malecek M, Maddocks K, Flowers C, Kahl B, Cohen J. MAINTENANCE RITUXIMAB IS ASSOCIATED WITH IMPROVED OVERALL SURVIVAL IN MANTLE CELL LYMPHOMA PATIENTS RESPONDING TO INDUCTION THERAPY WITH BENDAMUSTINE + RITUXIMAB (BR). Hematol Oncol 2019. [DOI: 10.1002/hon.75_2631] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- B.T. Hill
- Hematology and Medical Oncology; Cleveland Clinic Taussig Cancer Institute; Cleveland United States
| | | | - P. Martin
- Hematology/Oncology; Weill Cornell Medical College; New York United States
| | - M.C. Churnetski
- Hematology and Medical Oncology; Emory University - Winship Cancer Institute; Atlanta United States
| | - Y. Sawalha
- Hematology and Medical Oncology; Cleveland Clinic Taussig Cancer Institute; Cleveland United States
| | - S. Goyal
- Biostatistics; Emory University; Atlanta United States
| | - K. Shanmugasundaram
- Hematology and Medical Oncology; Emory University - Winship Cancer Institute; Atlanta United States
| | - O. Calzada
- Hematology and Medical Oncology; Emory University - Winship Cancer Institute; Atlanta United States
| | - B. Kolla
- Hematology; Oncology,and Transplantation, University of Minnesota; Minneapolis United States
| | - V. Bachanova
- Hematology; Oncology,and Transplantation, University of Minnesota; Minneapolis United States
| | - J.N. Gerson
- Hematology/Oncology; Fox Chase Cancer Center; Philadelphia United States
| | - S.K. Barta
- Hematology/Oncology; Fox Chase Cancer Center; Philadelphia United States
| | - E. Maldonado
- Knight Cancer Institute; Oregon Health and Sciences University; Portland United States
| | - M. Gordon
- Knight Cancer Institute; Oregon Health and Sciences University; Portland United States
| | - A. Danilov
- Knight Cancer Institute; Oregon Health and Sciences University; Portland United States
| | - N.S. Grover
- Lineberger Cancer Institute; University of North Carolina; Chapel Hill United States
| | - S. Mathews
- Lineberger Cancer Institute; University of North Carolina; Chapel Hill United States
| | - M. Burkart
- Hematology; Northwestern University; Chicago United States
| | - R. Karmali
- Hematology; Northwestern University; Chicago United States
| | - N. Ghosh
- Hematology and Medical Oncology; Levine Cancer Institute; Charlotte United States
| | - S.I. Park
- Hematology and Medical Oncology; Levine Cancer Institute; Charlotte United States
| | - N. Epperla
- Hematology; The Ohio State University James Cancer Center; Columbus United States
| | - D.A. Bond
- Hematology; The Ohio State University James Cancer Center; Columbus United States
| | - T. Badar
- Hematology and Oncology; Medical College of Wisconsin; Milwaukee United States
| | - K.A. Blum
- Hematology and Medical Oncology; Emory University - Winship Cancer Institute; Atlanta United States
| | - J. Guo
- Hematology/Oncology; Weill Cornell Medical College; New York United States
| | - M. Hamadani
- Hematology and Oncology; Medical College of Wisconsin; Milwaukee United States
| | - T.S. Fenske
- Hematology and Oncology; Medical College of Wisconsin; Milwaukee United States
| | - M. Malecek
- Siteman Cancer Center; Washington University; St Louis United States
| | - K. Maddocks
- Hematology; The Ohio State University James Cancer Center; Columbus United States
| | - C.R. Flowers
- Hematology and Medical Oncology; Emory University - Winship Cancer Institute; Atlanta United States
| | - B.S. Kahl
- Siteman Cancer Center; Washington University; St Louis United States
| | - J.B. Cohen
- Hematology and Medical Oncology; Emory University - Winship Cancer Institute; Atlanta United States
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Bond D, Switchenko J, Maddocks K, Churnetski M, Goyal S, Shanmugasundaram K, Calzada O, Kolla B, Bachanova V, Gerson J, Barta S, Hill B, Salwaha Y, Martin P, Maldonado E, Gordon M, Danilov A, Grover N, Mathews S, Burkart M, Karmali R, Ghosh N, Park S, Epperla N, Badar T, Guo J, Hamadani M, Fenske T, Malecek M, Kahl B, Flowers C, Blum K, Cohen J. OUTCOMES FOR PATIENTS WITH MANTLE CELL LYMPHOMA EXPERIENCING FRONTLINE TREATMENT FAILURE: A MULTICENTER RETROSPECTIVE STUDY. Hematol Oncol 2019. [DOI: 10.1002/hon.77_2631] [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: 11/12/2022]
Affiliation(s)
- D.A. Bond
- Division of Hematology; Ohio State University Comprehensive Cancer Center; Columbus United States
| | - J. Switchenko
- Department of Biostatistics and Bioinformatics; Rollins School of Public Health, Emory University; Atlanta United States
| | - K. Maddocks
- Division of Hematology; Ohio State University Comprehensive Cancer Center; Columbus United States
| | - M. Churnetski
- Department of Hematology and Medical Oncology; Winship Cancer Institute; Atlanta United States
| | - S. Goyal
- Department of Biostatistics and Bioinformatics; Rollins School of Public Health, Emory University; Atlanta United States
| | - K. Shanmugasundaram
- Department of Internal Medicine; Emory University School of Medicine; Atlanta United States
| | - O. Calzada
- Department of Hematology and Medical Oncology; Winship Cancer Institute; Atlanta United States
| | - B. Kolla
- Department of Hematology; University of Minnesota; Minneapolis United States
| | - V. Bachanova
- Department of Hematology; University of Minnesota; Minneapolis United States
| | - J. Gerson
- Hematology; Abramson Cancer Center, University of Pennsylvania; Pennsylvania United States
| | - S. Barta
- Hematology; Abramson Cancer Center, University of Pennsylvania; Pennsylvania United States
| | - B. Hill
- Hematology and Oncology; Cleveland Clinic Taussig Cancer Institute; Cleveland United States
| | - Y. Salwaha
- Hematology and Oncology; Cleveland Clinic Taussig Cancer Institute; Cleveland United States
| | - P. Martin
- Department of Medicine; Weil Cornell Medicine; New York United States
| | - E. Maldonado
- Hematology and Oncology; Oregon Health and Science University, Knight Cancer Institute; Portland United States
| | - M. Gordon
- Hematology and Oncology; Oregon Health and Science University, Knight Cancer Institute; Portland United States
| | - A. Danilov
- Hematology and Oncology; Oregon Health and Science University, Knight Cancer Institute; Portland United States
| | - N. Grover
- Hematology and Oncology; University of North Carolina Lineberger Comprehensive Cancer Center; Chapel Hill United States
| | - S. Mathews
- Hematology and Oncology; University of North Carolina Lineberger Comprehensive Cancer Center; Chapel Hill United States
| | - M. Burkart
- Hematology and Oncology; Northwestern University, Feinberg School of Medicine; Chicago United States
| | - R. Karmali
- Hematology and Oncology; Northwestern University, Feinberg School of Medicine; Chicago United States
| | - N. Ghosh
- Hematology and Oncology; Atrium Health; Charlotte United States
| | - S. Park
- Hematology and Oncology; Atrium Health; Charlotte United States
| | - N. Epperla
- Division of Hematology; Ohio State University Comprehensive Cancer Center; Columbus United States
| | - T. Badar
- Hematology and Oncology; Medical College of Wisconsin; Milwaukee United States
| | - J. Guo
- Department of Medicine; Weil Cornell Medicine; New York United States
| | - M. Hamadani
- Hematology and Oncology; Medical College of Wisconsin; Milwaukee United States
| | - T. Fenske
- Hematology and Oncology; Medical College of Wisconsin; Milwaukee United States
| | - M. Malecek
- Hematology and Oncology; Siteman Cancer Center, Washington University; St. Louis United States
| | - B. Kahl
- Hematology and Oncology; Siteman Cancer Center, Washington University; St. Louis United States
| | - C. Flowers
- Department of Hematology and Medical Oncology; Winship Cancer Institute; Atlanta United States
| | - K. Blum
- Department of Hematology and Medical Oncology; Winship Cancer Institute; Atlanta United States
| | - J. Cohen
- Department of Hematology and Medical Oncology; Winship Cancer Institute; Atlanta United States
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11
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Petrus P, Mejhert N, Corrales P, Lecoutre S, Li Q, Maldonado E, Kulyté A, Lopez Y, Campbell M, Acosta JR, Laurencikiene J, Douagi I, Gao H, Martínez-Álvarez C, Hedén P, Spalding KL, Vidal-Puig A, Medina-Gomez G, Arner P, Rydén M. Transforming Growth Factor-β3 Regulates Adipocyte Number in Subcutaneous White Adipose Tissue. Cell Rep 2018; 25:551-560.e5. [DOI: 10.1016/j.celrep.2018.09.069] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 08/31/2018] [Accepted: 09/21/2018] [Indexed: 11/15/2022] Open
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12
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Maldonado E, López Y, Herrera M, Martínez-Sanz E, Martínez-Álvarez C, Pérez-Miguelsanz J. Craniofacial structure alterations of foetuses from folic acid deficient pregnant mice. Ann Anat 2018; 218:59-68. [DOI: 10.1016/j.aanat.2018.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 01/17/2018] [Accepted: 02/06/2018] [Indexed: 12/18/2022]
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13
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Maldonado E, López-Gordillo Y, Partearroyo T, Varela-Moreiras G, Martínez-Álvarez C, Pérez-Miguelsanz J. Tongue Abnormalities Are Associated to a Maternal Folic Acid Deficient Diet in Mice. Nutrients 2017; 10:nu10010026. [PMID: 29283374 PMCID: PMC5793254 DOI: 10.3390/nu10010026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/15/2017] [Accepted: 12/25/2017] [Indexed: 12/27/2022] Open
Abstract
It is widely accepted that maternal folic acid (FA) deficiency during pregnancy is a risk factor for abnormal development. The tongue, with multiple genes working together in a coordinated cascade in time and place, has emerged as a target organ for testing the effect of FA during development. A FA-deficient (FAD) diet was administered to eight-week-old C57/BL/6J mouse females for 2–16 weeks. Pregnant dams were sacrificed at gestational day 17 (E17). The tongues and heads of 15 control and 210 experimental fetuses were studied. In the tongues, the maximum width, base width, height and area were compared with width, height and area of the head. All measurements decreased from 10% to 38% with increasing number of weeks on maternal FAD diet. Decreased head and tongue areas showed a harmonic reduction (Spearman nonparametric correlation, Rho = 0.802) with respect to weeks on a maternal FAD diet. Tongue congenital abnormalities showed a 10.9% prevalence, divided in aglossia (3.3%) and microglossia (7.6%), always accompanied by agnathia (5.6%) or micrognathia (5.2%). This is the first time that tongue alterations have been related experimentally to maternal FAD diet in mice. We propose that the tongue should be included in the list of FA-sensitive birth defect organs due to its relevance in several key food and nutrition processes.
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Affiliation(s)
- Estela Maldonado
- Laboratorio de Desarrollo y Crecimiento Craneofacial, Facultad de Odontología, Universidad Complutense de Madrid, 28040 Madrid, Spain; (E.M.); (Y.L.-G.); (C.M.-Á.)
| | - Yamila López-Gordillo
- Laboratorio de Desarrollo y Crecimiento Craneofacial, Facultad de Odontología, Universidad Complutense de Madrid, 28040 Madrid, Spain; (E.M.); (Y.L.-G.); (C.M.-Á.)
| | - Teresa Partearroyo
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU San Pablo, Boadilla del Monte, 28003 Madrid, Spain; (T.P.); (G.V.-M.)
| | - Gregorio Varela-Moreiras
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU San Pablo, Boadilla del Monte, 28003 Madrid, Spain; (T.P.); (G.V.-M.)
| | - Concepción Martínez-Álvarez
- Laboratorio de Desarrollo y Crecimiento Craneofacial, Facultad de Odontología, Universidad Complutense de Madrid, 28040 Madrid, Spain; (E.M.); (Y.L.-G.); (C.M.-Á.)
- Departamento de Anatomía y Embriología Humana, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Juliana Pérez-Miguelsanz
- Departamento de Anatomía y Embriología Humana, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Correspondence: ; Tel.: +34-913-941-380
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14
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Gonzalez-Valencia R, Magana-Rodriguez F, Maldonado E, Salinas J, Thalasso F. Detection of hotspots and rapid determination of methane emissions from landfills via a ground-surface method. Environ Monit Assess 2015; 187:4083. [PMID: 25399118 DOI: 10.1007/s10661-014-4083-0] [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: 12/10/2013] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
We present a method for the rapid determination of methane emissions from landfills based on atmospheric dispersion theory, which suggests that the methane concentration, at a small distance from the soil/atmosphere interface, is proportional to its flux. Thus, after suitable calibration, the determination of methane concentrations close to the ground allows for flux determination in a shorter time than with standard enclosure techniques. This concept was tested using a surface probe in direct contact with the ground. The probe extracts a continuous sample of the air at the probe/ground interface and transports it to a portable methane analyzer. It was observed that stable methane concentrations were measured 30 s after the probe was positioned at the measurement point. These concentrations correlated well with the fluxes measured by standard static chambers. The method was used to determine the fluxes at 217 points within a 90,000 m(2) landfill. These measurements facilitated mapping of the CH4 emissions and the localization of hotspots. We conclude that the method is simple, effective, and relatively quick, compared to existing standard methods.
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Affiliation(s)
- R Gonzalez-Valencia
- Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN, 2508, Colonia San Pedro Zacatenco, 07360, Mexico DF, Mexico
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15
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Barrio MC, Del Río A, Murillo J, Maldonado E, López-Gordillo Y, Paradas-Lara I, Hernandes L, Catón J, Martínez-Álvarez C. Epidermal growth factor impairs palatal shelf adhesion and fusion in the Tgf-β 3 null mutant. Cells Tissues Organs 2014; 199:201-11. [PMID: 24861080 DOI: 10.1159/000362227] [Citation(s) in RCA: 6] [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] [Accepted: 03/14/2014] [Indexed: 11/19/2022] Open
Abstract
The cleft palate presented by transforming growth factor-β3 (Tgf-β3) null mutant mice is caused by altered palatal shelf adhesion, cell proliferation, epithelial-to-mesenchymal transformation and cell death. The expression of epidermal growth factor (EGF), transforming growth factor-β1 (Tgf-β1) and muscle segment homeobox-1 (Msx-1) is modified in the palates of these knockout mice, and the cell proliferation defect is caused by the change in EGF expression. In this study, we aimed to determine whether this change in EGF expression has any effect on the other mechanisms altered in Tgf-β3 knockout mouse palates. We tested the effect of inhibiting EGF activity in vitro in the knockout palates via the addition of Tyrphostin AG 1478. We also investigated possible interactions between EGF, Tgf-β1 and Msx-1 in Tgf-β3 null mouse palate cultures. The results show that the inhibition of EGF activity in Tgf-β3 null mouse palate cultures improves palatal shelf adhesion and fusion, with a particular effect on cell death, and restores the normal distribution pattern of Msx-1 in the palatal mesenchyme. Inhibition of TGF-β1 does not affect either EGF or Msx-1 expression.
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Affiliation(s)
- M Carmen Barrio
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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16
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Maestro-de-las-Casas C, Pérez-Miguelsanz J, López-Gordillo Y, Maldonado E, Partearroyo T, Varela-Moreiras G, Martínez-Álvarez C. Maternal folic acid-deficient diet causes congenital malformations in the mouse eye. ACTA ACUST UNITED AC 2014; 97:587-96. [PMID: 24078476 DOI: 10.1002/bdra.23176] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/13/2013] [Accepted: 07/29/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND The eye is a very complex structure derived from the neural tube, surface ectoderm, and migratory mesenchyme from a neural crest origin. Because structures that evolve from the neural tube may be affected by a folate/folic acid (FA) deficiency, the aim of this work was to investigate whether a maternal folic acid-deficient diet may cause developmental alterations in the mouse eye. METHODS Female C57BL/6J mice (8 weeks old) were assigned into two different folic acid groups for periods ranging between 2 and 16 weeks. Animals were killed at gestation day 17. Hepatic folate was analyzed, and the eyes from 287 fetuses were macroscopically studied, sectioned and immunolabeled with anti-transforming growth factor (TGF)-β2 and anti-TGF-βRII. RESULTS Mice exposed to a FA-deficient diet exhibited numerous eye macroscopic anomalies, such as anophthalmia and microphthalmia. Microscopically, the eye was the most affected organ (43.7% of the fetuses). The highest incidence of malformations occurred from the 8th week onward. A statistically significant linear association between the number of maternal weeks on the FA-deficient diet and embryonic microscopic eye malformations was observed. The optic cup derivatives and structures forming the eye anterior segment showed severe abnormalities. In addition, TGF-β2 and TGF-βRII expression in the eye was also altered. CONCLUSION This study suggests that an adequate folic acid/folate status plays a key role in the formation of ocular tissues and structures, whereas a vitamin deficiency is negatively associated with a normal eye development even after a short-term exposure.
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Affiliation(s)
- Carmen Maestro-de-las-Casas
- Departamento de Anatomía y Embriología Humana I. Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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17
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Lombardi R, Rosa-Diez G, Ferreiro A, Greloni G, Yu L, Younes-Ibrahim M, Burdmann EA, Plata-Cornejo R, Granado RCD, e Silva ACA, Naseri AP, Balbi A, Teixeira AA, Stein A, Vieira AE, de Almeida Inda AJ, Pereira B, Cortez CC, Fraga CN, Chula DC, d'Avila DO, Romao EA, de Lima E, Klaus F, Santos FRL, Barcellos FC, Herdoiza G, Dos Santos GM, Lotaif LD, Peres LAB, Yu L, Miorin LA, de Andrade MC, Vannucchi MTI, Oliveira M, Younes-Ibrahim M, Huehara M, dos Santos OP, Neto OV, de Medeiros RN, Laranja S, Sobral TD, de Castro Santos T, Dutra W, Pacheco A, Boltansky A, Cortes DES, Briones E, Quintana E, Roessler E, Goecke H, Hurtado H, Flores JC, Penaloza JC, Espinoza M, Alvarez M, Nunez M, Quintero N, Downey P, Wainstein R, Ayca V, Garces EO, Calderon MC, Almonte AF, Dominguez CC, Jimenez R, Rodriguez S, Cruz CS, Acosta DJ, Ortiz F, Vivas NM, Correa-Rotter R, Cueto-Manzano A, de Freitas Patino O, Benitez DC, Gimenez E, Brizuela R, Bobadilla SCF, Hurtado A, Kalugina A, Huaman C, Postigo C, Loza C, Maldonado E, Solis G, Sakihara G, Hernandez J, Gonzalez JL, Rodriguez J, Fiestas M, Hinojosa R, Barreto R, Ferreiro A, Operti A, Maino A, Alvarez A, Gelabert B, Szpinak B, Burgos C, Verdaguer C, Rugnitz E, Tambucho D, Gronros E, Gonzalez F, Olaizola I, Panissa J, Fernandez-Cean J, Garcia M, Mautone M, Odriozola M, Forselledo M, Andrade M, Labella M, Dibello N, Canzani O, Marchese R, Llopart T, Matonte V, Maseda C, Oteiza DU, Rumbos LO, Moreno MD. Acute kidney injury in Latin America: a view on renal replacement therapy resources. Nephrol Dial Transplant 2014; 29:1369-76. [DOI: 10.1093/ndt/gfu078] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [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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18
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Paradas-Lara I, Casado-Gómez I, Martín C, Martínez-Sanz E, López-Gordillo Y, González P, Rodríguez-Bobada C, Chamorro M, Arias P, Maldonado E, Ortega R, Berenguer B, Martínez-Álvarez C. Maxillary growth in a congenital cleft palate canine model for surgical research. J Craniomaxillofac Surg 2013; 42:13-21. [PMID: 23434237 DOI: 10.1016/j.jcms.2013.01.032] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 01/04/2013] [Accepted: 01/15/2013] [Indexed: 11/29/2022] Open
Abstract
We have recently presented the Old Spanish Pointer dog, with a 15-20% spontaneous congenital cleft palate rate, as a unique experimental model of this disease. This study aimed to describe the cleft palate of these dogs for surgical research purposes and to determine whether congenital cleft palate influences maxillofacial growth. Seven newborn Old Spanish Pointer dogs of both sexes, comprising a cleft palate group (n = 4) and a normal palate group (n = 3), were fed using the same technique. Macroscopic photographs and plaster casts from the palate, lateral radiographs and computer tomograms of the skull were taken sequentially over 41 weeks, starting at week 5. The cleft morphology, the size and the tissue characteristics in these dogs resembled the human cleft better than current available animal models. During growth, the cleft width varies. Most of the transverse and longitudinal measures of the palate were statistically lower in the cleft palate group. The cleft palate group showed hypoplasia of the naso-maxillary complex. This model of congenital cleft palate seems suitable for surgical research purposes. A reduced maxillofacial pre- and post-natal development is associated to the congenital cleft palate in the Old Spanish Pointer dog.
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Affiliation(s)
- Irene Paradas-Lara
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Inmaculada Casado-Gómez
- Departamento de Estomatología IV, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Conchita Martín
- Departamento de Estomatología IV, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Elena Martínez-Sanz
- Servicio Aragonés de Salud, Atención Primaria, Sector Zaragoza III, 50500 Tarazona, Spain
| | - Yamila López-Gordillo
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Pablo González
- Departamento de Medicina y Cirugía Experimentales, Hospital Universitario Clínico San Carlos, Profesor Martín Lago s/n, 28040 Madrid, Spain
| | - Cruz Rodríguez-Bobada
- Departamento de Medicina y Cirugía Experimentales, Hospital Universitario Clínico San Carlos, Profesor Martín Lago s/n, 28040 Madrid, Spain
| | - Manuel Chamorro
- Policlínica Veterinaria, Centro Militar de Veterinaria, Ministerio de la Defensa de España, Darío Gazapo 3, 28024 Madrid, Spain
| | - Pablo Arias
- Policlínica Veterinaria, Centro Militar de Veterinaria, Ministerio de la Defensa de España, Darío Gazapo 3, 28024 Madrid, Spain
| | - Estela Maldonado
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Ricardo Ortega
- Departamento de Estomatología III, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Beatriz Berenguer
- Servicio de Cirugía Plástica Infantil, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Concepción Martínez-Álvarez
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal s/n, 28040 Madrid, Spain.
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Martínez-Sanz E, Casado-Gómez I, Martín C, López-Gordillo Y, González P, Rodríguez-Bobada C, Paradas I, González-Meli B, Maldonado E, Maestro C, Prados JC, Martínez-Álvarez C. A new technique for feeding dogs with a congenital cleft palate for surgical research. Lab Anim 2011; 45:70-80. [PMID: 21357699 DOI: 10.1258/la.2010.010044] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In humans, cleft palate (CP) is one of the most common malformations. Although surgeons use palatoplasty to close CP defects in children, its consequences for subsequent facial growth have prompted investigations into other novel surgical alternatives. The animal models of CP used to evaluate new surgical treatments are frequently obtained by creating surgically induced clefts in adult dogs. This procedure has been ethically criticized due to its severity and questionable value as an animal model for human CP. Dogs born with a congenital CP would be much better for this purpose, provided they developed CP at a sufficient rate and could be fed. Up until now, feeding these pups carried the risk of aspiration pneumonia, while impeding normal suckling and chewing, and thus compromising orofacial growth. We developed a technique for feeding dog pups with CP from birth to the time of surgery using two old Spanish pointer dog pups bearing a complete CP. This dog strain develops CP in 15-20% of the offspring spontaneously. Custom-made feeding teats and palatal prostheses adapted to the pups' palates were made from thermoplastic plates. This feeding technique allowed lactation, eating and drinking in the pups with CP, with only sporadic rhinitis. To determine whether the use of this palatal prosthesis interferes with palatal growth, the palates of three littermate German shorthaired pointer pups without CP, either wearing or not wearing (controls) the prosthesis, were measured. The results showed that the permanent use of this prosthesis does not impede palatal growth in the pups.
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Affiliation(s)
- Elena Martínez-Sanz
- Departamento de Anatomía y Embriología Humana I, Facultad de Odontología, Universidad Complutense de Madrid, Avda. Complutense, s/n 28040 Madrid, Spain
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Maldonado E, Murillo J, Barrio C, del Río A, Pérez-Miguelsanz J, López-Gordillo Y, Partearroyo T, Paradas I, Maestro C, Martínez-Sanz E, Varela-Moreiras G, Martínez-Álvarez C. Occurrence of cleft-palate and alteration of Tgf-β(3) expression and the mechanisms leading to palatal fusion in mice following dietary folic-acid deficiency. Cells Tissues Organs 2011; 194:406-20. [PMID: 21293104 DOI: 10.1159/000323213] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2010] [Indexed: 02/02/2023] Open
Abstract
Folic acid (FA) is essential for numerous bodily functions. Its decrease during pregnancy has been associated with an increased risk of congenital malformations in the progeny. The relationship between FA deficiency and the appearance of cleft palate (CP) is controversial, and little information exists on a possible effect of FA on palate development. We investigated the effect of a 2-8 weeks' induced FA deficiency in female mice on the development of CP in their progeny as well as the mechanisms leading to palatal fusion, i.e. cell proliferation, cell death, and palatal-shelf adhesion and fusion. We showed that an 8 weeks' maternal FA deficiency caused complete CP in the fetuses although a 2 weeks' maternal FA deficiency was enough to alter all the mechanisms analyzed. Since transforming growth factor-β(3) (TGF-β(3)) is crucial for palatal fusion and since most of the mechanisms impaired by FA deficiency were also observed in the palates of Tgf-β(3)null mutant mice, we investigated the presence of TGF-β(3) mRNA, its protein and phospho-SMAD2 in FA-deficient (FAD) mouse palates. Our results evidenced a large reduction in Tgf-β(3) expression in palates of embryos of dams fed an FAD diet for 8 weeks; Tgf-β(3) expression was less reduced in palates of embryos of dams fed an FAD diet for 2 weeks. Addition of TGF-β(3) to palatal-shelf cultures of embryos of dams fed an FAD diet for 2 weeks normalized all the altered mechanisms. Thus, an insufficient folate status may be a risk factor for the development of CP in mice, and exogenous TGF-β(3) compensates this deficit in vitro.
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Affiliation(s)
- Estela Maldonado
- Departamento de Anatomía y Embriología Humana I, Facultad de Odontología, Universidad Complutense, Madrid, Spain
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del Río A, Barrio M, Murillo J, Maldonado E, López-Gordillo Y, Martínez-Sanz E, Martínez M, Martínez-Álvarez C. Analysis of the Presence of Cell Proliferation-Related Molecules in the Tgf-β 3 Null Mutant Mouse Palate Reveals Misexpression of EGF and Msx-1. Cells Tissues Organs 2011; 193:135-50. [DOI: 10.1159/000319970] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2010] [Indexed: 02/03/2023] Open
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Garcia-Gonzalez A, Flores-Vazquez AL, Maldonado E, Rosa APBDL, Ruiz-Garcia J. Globulin 11S and Its Mixture with l-Dipalmitoylphosphatidylcholine at the Air/Liquid Interface. J Phys Chem B 2009; 113:16547-56. [DOI: 10.1021/jp907443x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- A. Garcia-Gonzalez
- Institute of Physics, Autonomous University of San Luis Potosi, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., México; CINVESTAV-IPN-Mérida, Antigua carretera Mérida-Progreso km 6, 97310 Mérida, Yucatán, Mexico; and Institute for Scientific and Technological Research at San Luis Potosi, Camino a la Presa San José s/n, Lomas 4a Sección, 78231 San Luís Potosí, S.L.P., México
| | - A. L. Flores-Vazquez
- Institute of Physics, Autonomous University of San Luis Potosi, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., México; CINVESTAV-IPN-Mérida, Antigua carretera Mérida-Progreso km 6, 97310 Mérida, Yucatán, Mexico; and Institute for Scientific and Technological Research at San Luis Potosi, Camino a la Presa San José s/n, Lomas 4a Sección, 78231 San Luís Potosí, S.L.P., México
| | - E. Maldonado
- Institute of Physics, Autonomous University of San Luis Potosi, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., México; CINVESTAV-IPN-Mérida, Antigua carretera Mérida-Progreso km 6, 97310 Mérida, Yucatán, Mexico; and Institute for Scientific and Technological Research at San Luis Potosi, Camino a la Presa San José s/n, Lomas 4a Sección, 78231 San Luís Potosí, S.L.P., México
| | - A. P. Barba de la Rosa
- Institute of Physics, Autonomous University of San Luis Potosi, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., México; CINVESTAV-IPN-Mérida, Antigua carretera Mérida-Progreso km 6, 97310 Mérida, Yucatán, Mexico; and Institute for Scientific and Technological Research at San Luis Potosi, Camino a la Presa San José s/n, Lomas 4a Sección, 78231 San Luís Potosí, S.L.P., México
| | - J. Ruiz-Garcia
- Institute of Physics, Autonomous University of San Luis Potosi, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., México; CINVESTAV-IPN-Mérida, Antigua carretera Mérida-Progreso km 6, 97310 Mérida, Yucatán, Mexico; and Institute for Scientific and Technological Research at San Luis Potosi, Camino a la Presa San José s/n, Lomas 4a Sección, 78231 San Luís Potosí, S.L.P., México
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Maldonado E, Roth MW, Gray PA. Fully atomistic molecular dynamics simulations of the behavior of a simple model of crude oil confined between graphene planes. ACS Appl Mater Interfaces 2009; 1:1211-1217. [PMID: 20355915 DOI: 10.1021/am900086u] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present and discuss the results of molecular dynamics computer simulations of crude oil confined between graphene planes. The crude oil is represented as a mixture of alkanes having 6 </= n </= 30 carbons that contain explicit hydrogen atoms; the confining structure is a floor and ceiling, each comprised of graphene sheets. At low temperature, the system adsorbs completely onto the confining layers, showing an interesting domain structure in its own right. As the temperature increases, various species desorb in order of increasing molecular mass and enter the vapor phase between the confining sheets. Desorption proceeds through a roughening of the adsorbed layers but does not appear to couple to any inter- or intramolecular phase transition on the surfaces for any given species. Allowing the graphene sheets to be flexible affects the rate of adsorption as well as the in-plane order and molecular confirmations of the adsorbate. Cursory simulations with more than one layer show droplet-like adsorption at low temperatures and complicated dynamics, which shift the initial desorption temperatures to lower values than those for the monolayer and cause the desorption temperature and process to be much less defined. The results presented here are suggestive of a method of separating alkane mixtures at temperatures significantly different from those of conventional refining processes.
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Affiliation(s)
- E Maldonado
- Department of Physics, University of Northern Iowa, Cedar Falls, Iowa 50614, USA
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Maldonado E, Hubert N, Sagnes P, De Mérona B. Morphology-diet relationships in four killifishes (Teleostei, Cyprinodontidae, Orestias) from Lake Titicaca. J Fish Biol 2009; 74:502-520. [PMID: 20735575 DOI: 10.1111/j.1095-8649.2008.02140.x] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This study explores the relationship between morphology and diet in four Andean killifishes (Orestias) from Lake Titicaca that are known to differ in habitat use. Species that fed preferentially on amphipods (Orestias albus) or molluscs (Orestias luteus) separated in multivariate space from other species that feed on cladocera and algae (Orestias agassii and Orestias jussiei). Generally, specimens feeding on cladocera were characterized by a short, blunt nose with a small mouth; whereas, specimens feeding on amphipods exhibited a long snout with a large mouth. Specimens including molluscs in their diet tended to have a larger posterior part of the head and the larger opercles than others; while the occurrence of substratum in gut content was generally related to a short but deep head. The present analysis suggests that the littoral O. jussiei has an intermediate phenotype and diet between the pelagic (O. agassii) and benthic (O. albus and O. luteus) species. Results suggest that resource partitioning was occurring and that several morphological traits relate to characteristics of the diet, and it is inferred that the benthic, the pelagic and the littoral zones in the lake host different prey communities constituting distinct adaptive landscapes.
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Affiliation(s)
- E Maldonado
- U.R. 131 Institut de Recherche pour le Développement (IRD), 43 Bd du 11 novembre 1918, Villeurbanne, France.
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Martín C, Casado I, Pérez-Miguelsanz J, López Y, Maldonado E, Maestro C, Paradas I, Martínez-Sanz E, González I, Martínez-Álvarez C. Effect of Butyl Benzyl Phthalate on Early Postnatal Mortality in Rats. Toxicol Mech Methods 2008; 18:759-62. [DOI: 10.1080/15376510802399065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- C. Martín
- Departamento de Estomatologia IV, Facultad de Odontologia, Universidad Complutense de Madrid, Madrid, Spain
| | - I. Casado
- Departamento de Estomatologia IV, Facultad de Odontologia, Universidad Complutense de Madrid, Madrid, Spain
| | - J. Pérez-Miguelsanz
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Y. López
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - E. Maldonado
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - C. Maestro
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - I. Paradas
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - E. Martínez-Sanz
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - I. González
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - C. Martínez-Álvarez
- Departamento de Anatomía y Embriologíca Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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Murillo J, Maldonado E, Barrio MC, Del Río A, López Y, Martínez-Sanz E, González I, Martín C, Casado I, Martínez-Alvarez C. Interactions between TGF-beta1 and TGF-beta3 and their role in medial edge epithelium cell death and palatal fusion in vitro. Differentiation 2008; 77:209-20. [PMID: 19281781 DOI: 10.1016/j.diff.2008.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2008] [Revised: 08/14/2008] [Accepted: 08/18/2008] [Indexed: 01/23/2023]
Abstract
In recent decades, studies have shown that both TGF-beta(1) and TGF-beta(3) play an important role in the induction of medial edge epithelium (MEE) cell death and palatal fusion. Many of these experiments involved the addition or blockage of one of these growth factors in wild-type (WT) mouse palate cultures, where both TGF-beta(1) and TGF-beta(3) are present. Few studies have addressed the existence of interactions between TGF-beta(1) and TGF-beta(3), which could modify their individual roles in MEE cell death during palatal fusion. We carried out several experiments to test this possibility, and to investigate how this could influence TGF-beta(1) and TGF-beta(3) actions on MEE cell death and palatal shelf fusion. We double-immunolabelled developing mouse palates with anti-TGF-beta(1) or anti-TGF-beta(3) antibodies and TUNEL, added rhTGF-beta(1) or rhTGF-beta(3) or blocked the TGF-beta(1) and TGF-beta(3) action at different concentrations to WT or Tgf-beta(3) null mutant palate cultures, performed in situ hybridizations with Tgf-beta(1) or Tgf-beta(3) riboprobes, and measured the presence of TUNEL-positive midline epithelial seam (MES) cells and MES disappearance (palatal shelf fusion) in the different in vitro conditions. By combining all these experiments, we demonstrate great interaction between TGF-beta(1) and TGF-beta(3) in the developing palate and confirm that TGF-beta(3) has a more active role in MES cell death than TGF-beta(1), although both are major inductors of MES disappearance. Finally, the co-localization of TGF-beta(1), but not TGF-beta(3), with TUNEL in the MES allows us to suggest a possible role for TGF-beta(1) in MES apoptotic clearance.
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Affiliation(s)
- Jorge Murillo
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Avda. Complutense, s/n, 28040 Madrid, Spain
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Silva B, Vidal A, Vargas F, Valdebenito P, Araya F, De la Torre J, Maldonado E. SCHU-31: Percutaneous Renal Surgery in the Valdivia Uria Position: Our Experience in 70 Cases. Urology 2008. [DOI: 10.1016/j.urology.2008.08.039] [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: 10/21/2022]
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Vidal A, Silva B, Vargas F, Valdebenito P, Araya F, De la Torre J, Maldonado E. SCHU-26: Tubeless Percutaneous Renal Surgery in the Supine Position: Initial Experience. Urology 2008. [DOI: 10.1016/j.urology.2008.08.034] [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: 10/21/2022]
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Martínez-Sanz E, Del Río A, Barrio C, Murillo J, Maldonado E, Garcillán B, Amorós M, Fuerte T, Fernández A, Trinidad E, Rabadán MA, López Y, Martínez ML, Martínez-Alvarez C. Alteration of medial-edge epithelium cell adhesion in two Tgf-beta3 null mouse strains. Differentiation 2008; 76:417-30. [PMID: 18431835 PMCID: PMC2346164 DOI: 10.1111/j.1432-0436.2007.00226.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [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] [Indexed: 11/28/2022]
Abstract
Although palatal shelf adhesion is a crucial event during palate development, little work has been carried out to determine which molecules are responsible for this process. Furthermore, whether altered palatal shelf adhesion causes the cleft palate presented by Tgf-β3 null mutant mice has not yet been clarified. Here, we study the presence/distribution of some extracellular matrix and cell adhesion molecules at the time of the contact of palatal shelves in both wild-type and Tgf-β3 null mutant palates of two strains of mice (C57/BL/6J (C57), and MF1) that develop cleft palates of different severity. We have performed immunohistochemistry with antibodies against collagens IV and IX, laminin, fibronectin, the α5- and β1-integrins, and ICAM-1; in situ hybridization with a Nectin-1 riboprobe; and palatal shelf cultures treated or untreated with TGF-β3 or neutralizing antibodies against fibronectin or the α5-integrin. Our results show the location of these molecules in the wild-type mouse medial edge epithelium (MEE) of both strains at the time of the contact of palatal shelves; the heavier (C57) and milder (MF1) alteration of their presence in the Tgf-β3 null mutants; the importance of TGF-β3 to restore their normal pattern of expression; and the crucial role of fibronectin and the α5-integrin in palatal shelf adhesion. We thus provide insight into the molecular bases of this important process and the cleft palate presented by Tgf-β3 null mutant mice.
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Affiliation(s)
- Elena Martínez-Sanz
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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Wojna V, Skolasky R, McArthur J, Maldonado E, Hechavarria R, Mayo R, Selnes O, Ginebra T, de la Torre T, Garcia H, Kraiselburd E, Melendez-Guerrero L, Zorrilla C, Nath A. Spanish validation of the HIV dementia scale in women. AIDS Patient Care STDS 2007; 21:930-41. [PMID: 18154490 DOI: 10.1089/apc.2006.0180] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
HIV infection is increasing in minority groups, particularly in African American and Hispanic women. Although the incidence of HIV dementia has decreased since the advent of highly active antiretroviral treatment, prevalence of neurocognitive complications has increased as patients are now living longer. This study's purpose was to determine the psychometric properties of the Spanish-language HIV Dementia Scale (HDS) in a group of HIV-infected women. We recruited 96 women: 60 HIV-seropositive and 36 HIV-seronegative. Modification of the HDS into a Spanish-language version consisted of translating the instructions, substituting four words in Spanish (gato, media, azul, piña), increasing 1 second in the psychomotor speed because the Spanish alphabet has more letters than the English alphabet, and not offering clues for memory recall. Cognitive impairment (CI) was defined according to the modified American Academy of Neurology HIV-dementia criteria including an asymptomatic CI group. Statistical analysis consisted of analysis of variance to determine group differences and receiver operator characteristics (ROC) to determine the optimal cutoff point for the screening of CI. HDS-Spanish total score and subscores for psychomotor speed and memory recall showed significant differences between HIV-seronegative and women with HIV-dementia (p < 0.001) and between HIV-seropositive women with normal cognition and those with HIV-dementia (p < 0.001). The optimal cutoff point of 13 or less had performance characteristics of 87% sensitivity and 46% specificity for HIV-associated CI (50.0% positive predictive value, 85.0% negative predictive value). The HDS-Spanish translation offers a useful screening tool with value for the identification of Hispanic women at risk of developing HIV-associated symptomatic neurocognitive disturbances.
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Affiliation(s)
- V. Wojna
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
- Neurology Section, Department of Internal Medicine, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - R.L. Skolasky
- Department of Orthopedic Surgery, Johns Hopkins University, Baltimore, Maryland
| | - J.C. McArthur
- Neurology Department, Johns Hopkins University, Baltimore, Maryland
| | - E. Maldonado
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - R. Hechavarria
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - R. Mayo
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - O. Selnes
- Neurology Department, Johns Hopkins University, Baltimore, Maryland
| | - T. Ginebra
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - T. de la Torre
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - H. Garcia
- Center of Sexually Transmitted Diseases, San Juan, Puerto Rico
| | - E. Kraiselburd
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - L.M. Melendez-Guerrero
- NeuroAIDS SNRP, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - C.D. Zorrilla
- Maternal Infant Studies Center, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - A. Nath
- Neurology Department, Johns Hopkins University, Baltimore, Maryland
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Sariol CA, González-Martínez J, Arana T, Gascot S, Suárez E, Maldonado E, Gerald MS, Rodríguez M, Kraiselburd EN. Differential distribution of antibodies to different viruses in young animals in the free-ranging rhesus macaques of Cayo Santiago. J Med Primatol 2007; 35:369-75. [PMID: 17214665 DOI: 10.1111/j.1600-0684.2006.00174.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The breeding colony of free-ranging rhesus macaques was established in 1938 in Cayo Santiago (CS) with animals collected in northern India. The seroprevalence to cercopithecine herpesvirus type 1 (B virus) and simian retroviruses has been studied previously. RESULTS This is the first report on the seropositivity to different viruses using samples collected shortly after removing animals (n = 245) from CS. All samples were negative for measles, simian immunodeficiency virus and simian type D retroviruses. The overall prevalence of antibodies was around 50% for simian T-lymphotropic virus I (STLV-I). For B virus, the prevalence was 38%. CONCLUSIONS Data obtained showed marked differences in the antibody distribution to B virus and STLV-I within the free-ranging colony of rhesus macaques. Implication of these data for the Specific Pathogen Free program at the Caribbean Primate Research Center are also discussed.
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Affiliation(s)
- C A Sariol
- Caribbean Primate Research Center, Unit of Comparative Medicine, University of Puerto Rico-Medical Sciences Campus, San Juan, PR, USA.
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Abstract
In Caenorhabditis elegans, several distinct apoptosis pathways have been characterized in the germline. The physiological pathway is though to eliminate excess germ cells during oogenesis to maintain gonad homeostasis and it is activated by unknown mechanisms. The DNA damage-induced germ cell apoptosis occurs in response to genotoxic agents and involves the proteins EGL-1 and CED-13, and the DNA damage response protein p53. Germ cell apoptosis can also be induced in response to pathogen infection through an EGL-1 dependent pathway. To gain insight into the mechanism and functions of germ cell apoptosis, we investigated whether and how other forms of stress induce this cell death. We found that oxidative, osmotic, heat shock and starvation stresses induce germ cell apoptosis through a p53 and EGL-1 independent pathway. We also learned that the MAPK kinases MEK-1 and SEK-1, and the p53 antagonist protein ABL-1, are essential for stress-induced germ cell apoptosis. We conclude that in C. elegans responses to various stresses that do not involve genotoxicity include an increase in germ cell apoptosis through the physiological pathway.
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Affiliation(s)
- L S Salinas
- Departamento de Biología Celular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Apartado Postal 70-600, México, DF 04510, Mexico
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Hechavarría R, Blass D, Ginebra T, Maldonado E, Mayo R, Melendez L, Santiago B, Wojna V. Characterization of Depressive Symptoms and CD4 in a Cohort of Hiv-Positive Hispanic Women in Puerto Rico. J Investig Med 2006. [DOI: 10.1177/108155890605402s107] [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: 01/09/2023]
Affiliation(s)
- R. Hechavarría
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - D. Blass
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - T. Ginebra
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - E. Maldonado
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - R. Mayo
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - L. Melendez
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - B. Santiago
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
| | - V. Wojna
- University of Puerto Rico, Medical Science Campus, San Juan, Puerto Rico
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34
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Hechavarría R, Blass D, Ginebra T, Maldonado E, Mayo R, Melendez L, Santiago B, Wojna V. 28 CHARACTERIZATION OF DEPRESSIVE SYMPTOMS AND CD4 IN A COHORT OF HIV-POSITIVE HISPANIC WOMEN IN PUERTO RICO. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0015.106] [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: 11/18/2022]
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35
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Neto JHM, Maldonado E, Borges M, Lima M. Elaboration and Experimental Validation of a Simplified Model for Encapsulated Ice Tanks Using a Bench Simulation Test Facility. ACTA ACUST UNITED AC 2004. [DOI: 10.1080/10789669.2004.10391109] [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: 10/18/2022]
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36
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37
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Abstract
Animal research plays a central role in psychology, and its use, prevalence and quality depends on the attitudes of students who enter psychology in Spain. Attitudes among psychology students about the use of laboratory animals are not known, so the aim of this work was to analyze the attitudes of Spanish psychology students toward animal research. An attitude questionnaire of 15 items was given to 661 undergraduate students of the School of Psychology at the University of Málaga, Spain. Several results were found: (a) 65.7% of the respondents strongly agreed or agreed with animal research. General support for animal research was significantly higher by men than by women. (b) Support for animal research was higher for senior students, suggesting that the psychology curriculum or self-selection to remain in the program might influence students' attitudes. (c) Attitudes toward animal research were similar among students independent of the type of animal being used for research in biological or psychological studies. (d) 58% considered that laboratory animals never or almost never are inappropriately handled. (c) 55.6% indicated that research in psychology on animals could be generalized to humans. Overall, these results suggest that among Spanish psychology students animals research is considered important for the advancement of the science. Likewise, a majority of students displayed positive attitudes toward animal research.
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Affiliation(s)
- J F Navarro
- Department of Psychobiology, Faculty of Psychology, University of Málaga, Spain.
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38
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Toscano RA, Maldonado E, Ortega A, Cárdenas J. Amarisolide monohydrate, a 2-(beta-glucosyl)neoclerodane. Acta Crystallogr C 2001; 57:846-7. [PMID: 11443262 DOI: 10.1107/s0108270101006217] [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] [Received: 03/05/2001] [Accepted: 04/10/2001] [Indexed: 11/10/2022] Open
Abstract
The absolute configuration of the neoclerodane glycoside amarisolide, presented here as the monohydrate, C26H36O9*H2O, has been determined by association with the known configuration of the glucose moiety. Its structure was established as 2beta-(O-beta-D-glucopyranosyl)neocleroda-3,13(16),14-trien-15,16-epoxy-18,19-olide. Extensive hydrogen bonding among the hydroxyl groups of the sugar moiety forms layers which are interconnected by water molecules.
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Affiliation(s)
- R A Toscano
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Apartado Postal 70-213, México DF 04510, México.
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39
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Abstract
Recent studies have suggested that 3,4-methylenedioxymethamphetamine (MDMA; "ecstasy"), a synthetic amphetamine derivative, might exhibit an anxiogenic-like activity in rodents. In this work, we examined the effects of MDMA (1, 8 and 15 mg kg(-1), i.p.) on social encounters between male mice using an ethopharmacological approach. Likewise, we compared the behavioural profile of MDMA with that induced by FG 7142 (15 mg kg(-1), i.p.), an anxiogenic benzodiazepine receptor ligand. Individually housed mice were exposed to anosmic standard opponents 30 min after drug administration, and the encounters were videotaped and evaluated using an ethologically based analysis. MDMA (8 and 15 mg kg(-1)) produced a behavioural pattern characterized by a marked decrease of aggression (threat and attack) as well as social investigation, body care and digging behaviours, without affecting immobility. Moreover, avoidance/flee and defence/submission behaviours were significantly increased by the drug. A very similar behavioural profile was observed in FG 7142-treated animals. Overall, these findings might indicate that MDMA has anxiogenic-like properties in male mice.
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Affiliation(s)
- E Maldonado
- Department of Psychobiology, Faculty of Psychology, Campus de Teatinos, University of Málaga, 29071 Málaga, Spain
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40
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Abstract
Histoplasma capsulatum is well adapted to be infectious and pathogenic for humans. As a soil fungus with no known requirement for interacting with a mammalian host as part of an obligate lifecycle, its plethora of strategies for successful pathogenesis is particularly remarkable. These features include the dimorphic mold-yeast transition, entry into host macrophages, subcellular localization, intracellular survival and proliferation during active infection, and persistence during clinically inapparent infection with the capacity for reactivation. To thrive within the harsh environment of a professionally phagocytic and antimicrobial host cell, H. capsulatum displays mechanisms for modulating its microenvironmental pH level, resisting host reactive oxygen and nitrogen intermediates and degradative enzymes, and withstanding nutrient starvation conditions, including acquisition of iron and calcium and biosynthesis of nucleic acid precursors. Attention has been focused on identifying virulence-associated phenotypic traits and genes that are differentially expressed under relevant conditions, such as yeast morphotype-specific genes and genes that are up-regulated during infection. These studies, together with the increasing ability to perform molecular genetic manipulations in this fungus, may yield novel antifungal drug or vaccine targets as well as elucidating pathogenic mechanisms.
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Affiliation(s)
- J P Woods
- Department of Medical Microbiology and Immunology, University of Wisconsin Medical School, Madison, WI 53706-1532, USA.
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41
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Cabrejos ME, Maldonado E. An RNA polymerase II complex containing capping enzymes and viral oncoproteins. IUBMB Life 2000; 50:125-9. [PMID: 11185957 DOI: 10.1080/713803697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The aim of this work was to identify proteins from Adenovirus 2-infected HeLa cell extracts that interact with the carboxyl-terminal domain of the largest subunit of RNA polymerase II. First, a mammalian RNA polymerase II complex was isolated from Adenovirus 2-infected HeLa cell extracts by affinity chromatography against the carboxyl-terminal domain of the largest subunit of RNA polymerase II, followed by chromatography on a Mono S fast protein liquid chromatographic column. Second, the isolated complex was further characterized by Western blot analysis, the formation of a GMP-protein complex, and transcriptional activity. The isolated complex contains general transcription factors, chromatin-remodeling factors, histone acetyltransferases, Srbs, capping enzymes, and E1A viral oncoproteins. The RNA polymerase II complex is active in transcription when supplemented with recombinant transcription factor IIB.
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Affiliation(s)
- M E Cabrejos
- Programa de Biologia Celular Molecular, Instituto de Ciencias Biomedicas, Facultad de Medicina, Universidad de Chile, Santiago
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42
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Abstract
1. The effects of acute administration of 3,4-methylenedioxymethamphetamine (MDMA; "ecstasy") on anxiety tested in the light/dark box were examined in albino male mice of the OF.1 strain. 2. Animals were evaluated in the light/dark test 30 min after injection of MDMA (1, 8, and 15 mg/kg, i.p) or saline. The following parameters were recorded (for 5 min); (a) number of exploratory rearings in the light and dark sections; (b) number of transitions between the lit and dark areas; (c) time spent in the light and dark areas; (d) latency of the initial movement from the light to the dark area, and (e) locomotor activity in light area. 3. MDMA (8 and 15 mg/kg) produced a significant reduction in exploratory activity (rearings and transitions), without decreasing motility, in comparison with saline-treated mice. However, time spent in lit/dark compartments was not significantly affected by the drug, which could be a consequence of the anti-exploratory properties of MDMA. 4. Overall, the behavioral profile found in the light/dark test indicates an anxiogenic-like activity of MDMA in mice. It is suggested, however, that animal models of anxiety which emphasize a social interaction could be more sensitive to the effects of this substance.
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Affiliation(s)
- E Maldonado
- Area de Psicobiología, Facultad de Psicología, Universidad de Málaga, Spain
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43
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Navarro JF, Romero C, Maldonado E. Effects of N6-cyclohexyl adenosine (CHA) on isolation-induced aggression in male mice. Methods Find Exp Clin Pharmacol 2000; 22:43-6. [PMID: 10791294 DOI: 10.1358/mf.2000.22.1.795830] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Several studies have suggested adenosine receptor involvement in the modulation of aggressive behavior; however, the influence of adenosine A1 agonists on aggression is scarcely known. In this study, we examined the effect of N6-cyclohexyl adenosine (CHA; 0.025-0.4 i.p.), a selective adenosine A1 receptor agonist, on agonistic behavior elicited by isolation in male mice. Individually housed mice were exposed to anosmic standard opponents 60 min after drug administration, and the encounters were videotaped and evaluated using an ethologically based analysis. CHA exhibited an ethopharmacological profile characterized by a selective decrease of offensive behaviors (threat and attack) at the intermediate dose (0.1 mg/kg), without impairment of motor activity. In contrast, the antiaggressive action of the highest doses used (0.2 and 0.4 mg/kg) was accompanied by a marked increase of immobility. It is concluded that the behavioral effects observed in this study could be related to an adenosine modulatory action on other neurotransmitter systems (dopamine/serotonin).
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Affiliation(s)
- J F Navarro
- Faculty of Psychology, University of Málaga, Spain.
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44
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Abstract
From the aerial parts of Salvia polystachya five new neo-clerodane diterpenoids, polystachynes A-E, have been isolated. The structures were established by spectroscopic methods, including the X-ray analysis of polystachynes C and D. The known clerodanes salvifaricin, linearolactone and dehydrokerlin were also isolated.
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Affiliation(s)
- E Maldonado
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, D.F
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45
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Affiliation(s)
- E Maldonado
- Instituto de Ciencias Biomedicas, Programa de Biologia Celular y Molecular, Facultad de Medicina, Universidad de Chile, Santiago
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46
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Navarro JF, Maldonado E. Behavioral profile of quinpirole in agonistic encounters between male mice. Methods Find Exp Clin Pharmacol 1999; 21:477-80. [PMID: 10544391] [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: 02/14/2023]
Abstract
Most neuroleptic drugs that act as dopaminergic D2 receptor antagonists are effective antiaggressive agents. Although the action of D2 antagonists on aggression has been extensively documented, little is known about the influence of D2 agonists. This study was designed to examine the effect of quinpirole (0.2, 0.4 and 0.8 mg/kg i.p.), a potent agonist at D2 receptors,on agonistic behavior elicited by isolation in male mice. Individually housed mice were exposed to anosmic standard opponents 30 min after drug administration and encounters were videotaped and evaluated using an ethologically based analysis. Quinpirole exhibited an ethopharmacological profile characterized by a selective decrease in offensive behaviors (threat and attack) at low doses (0.2 mg/kg) without affecting motility or exploratory behaviors. This action could be related to the activation of presynaptic D2 receptors. In contrast, at higher doses (0.8 mg/kg), this drug produced a behavioral pattern defined by a significant increase in defense/submission and avoidance/fleeing as well as a reduction in digging and social investigation behaviors suggesting that it could also show anxiogenic-like properties.
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Affiliation(s)
- J F Navarro
- Faculty of Psychology, University of Málaga, Spain.
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47
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Gao XG, Maldonado E, Pérez-Montfort R, Garza-Ramos G, de Gómez-Puyou MT, Gómez-Puyou A, Rodríguez-Romero A. Crystal structure of triosephosphate isomerase from Trypanosoma cruzi in hexane. Proc Natl Acad Sci U S A 1999; 96:10062-7. [PMID: 10468562 PMCID: PMC17842 DOI: 10.1073/pnas.96.18.10062] [Citation(s) in RCA: 28] [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: 11/18/2022] Open
Abstract
To gain insight into the mechanisms of enzyme catalysis in organic solvents, the x-ray structure of some monomeric enzymes in organic solvents was determined. However, it remained to be explored whether the structure of oligomeric proteins is also amenable to such analysis. The field acquired new perspectives when it was proposed that the x-ray structure of enzymes in nonaqueous media could reveal binding sites for organic solvents that in principle could represent the starting point for drug design. Here, a crystal of the dimeric enzyme triosephosphate isomerase from the pathogenic parasite Trypanosoma cruzi was soaked and diffracted in hexane and its structure solved at 2-A resolution. Its overall structure and the dimer interface were not altered by hexane. However, there were differences in the orientation of the side chains of several amino acids, including that of the catalytic Glu-168 in one of the monomers. No hexane molecules were detected in the active site or in the dimer interface. However, three hexane molecules were identified on the surface of the protein at sites, which in the native crystal did not have water molecules. The number of water molecules in the hexane structure was higher than in the native crystal. Two hexanes localized at <4 A from residues that form the dimer interface; they were in close proximity to a site that has been considered a potential target for drug design.
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Affiliation(s)
- X G Gao
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510 México D. F., Mexico
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48
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Reinberg D, Orphanides G, Ebright R, Akoulitchev S, Carcamo J, Cho H, Cortes P, Drapkin R, Flores O, Ha I, Inostroza JA, Kim S, Kim TK, Kumar P, Lagrange T, LeRoy G, Lu H, Ma DM, Maldonado E, Merino A, Mermelstein F, Olave I, Sheldon M, Shiekhattar R, Zawel L. The RNA polymerase II general transcription factors: past, present, and future. Cold Spring Harb Symp Quant Biol 1999; 63:83-103. [PMID: 10384273 DOI: 10.1101/sqb.1998.63.83] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- D Reinberg
- Howard Hughes Medical Institute, Department of Biochemistry, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, Piscataway 0885, USA
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49
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Abstract
A mammalian protein highly homologous to TATA-binding protein (TBP) has been identified and cloned. The recombinant mammalian TBP-related factor binds to the TATA box of the Ad-MLP and forms stable complexes with TFIIB on the promoter DNA. The mammalian TBP-related factor is able to substitute for TBP in supporting transcription by RNA polymerase II in an in vitro reconstituted system.
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Affiliation(s)
- E Maldonado
- Programa de Biologia Celular y Molecular, Instituto de Ciencias Biomedicas, Facultad de Medicina, Universidad de Chile, Santiago 7, Chile.
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50
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Pérez-Montfort R, Garza-Ramos G, Alcántara GH, Reyes-Vivas H, Gao XG, Maldonado E, de Gómez-Puyou MT, Gómez-Puyou A. Derivatization of the interface cysteine of triosephosphate isomerase from Trypanosoma brucei and Trypanosoma cruzi as probe of the interrelationship between the catalytic sites and the dimer interface. Biochemistry 1999; 38:4114-20. [PMID: 10194326 DOI: 10.1021/bi982425s] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the interface of homodimeric triosephosphate isomerase from Trypanosoma brucei (TbTIM) and Trypanosoma cruzi (TcTIM), one cysteine of each monomer forms part of the intersubunit contacts. The relatively slow derivatization of these cysteines by sulfhydryl reagents induces progressive structural alterations and abolition of catalysis [Garza-Ramos et al. (1998) Eur. J. Biochem. 253, 684-691]. Derivatization of the interface cysteine by 5, 5-dithiobis(2-nitrobenzoate) (DTNB) and methylmethane thiosulfonate (MMTS) was used to probe if events at the catalytic site are transmitted to the dimer interface. It was found that enzymes in the active catalytic state are significantly less sensitive to the thiol reagents than in the resting state. Maximal protection against derivatization of the interface cysteine by thiol reagents was obtained at near-saturating substrate concentrations. Continuous recording of derivatization by DTNB showed that catalysis hinders the reaction of sulfhydryl reagents with the interface cysteine. Therefore, in addition to intrinsic structural barriers, catalysis imposes additional impediments to the action of thiol reagents on the interface cysteine. In TcTIM, the substrate analogue phosphoglycolate protected strongly against DTNB action, and to a lesser extent against MMTS action; in TbTIM, phosphoglycolate protected against the effect of DTNB, but not against the action of MMTS. This indicates that barriers of different magnitude to the reaction of thiol reagents with the interface cysteine are induced by the events at the catalytic site. Studies with a Cys14Ser mutant of TbTIM confirmed that all the described effects of sulfhydryl reagents on the trypanosomal enzymes are a consequence of derivatization of the interface cysteine.
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Affiliation(s)
- R Pérez-Montfort
- Departamento de Bioquímica, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México
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