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Zirbesegger K, Reyes L, Paolino A, Dapueto R, Arredondo F, Gambini JP, Savio E, Porcal W. Molecular Imaging of Monoamine Oxidase A Expression in Highly Aggressive Prostate Cancer: Synthesis and Preclinical Evaluation of Positron Emission Tomography Tracers. ACS Pharmacol Transl Sci 2023; 6:1734-1744. [PMID: 37982127 PMCID: PMC10653014 DOI: 10.1021/acsptsci.3c00175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 11/21/2023]
Abstract
The role of monoamine oxidase A (MAO-A) in the aggressiveness of prostate cancer (PCa) has been established in recent years. The molecular imaging of MAO-A expression could offer a noninvasive tool for the visualization and quantification of highly aggressive PCa. This study reports the synthesis and preclinical evaluation of 11C- and 18F-labeled MAO-A inhibitors as positron emission tomography (PET) tracers for proof-of-concept studies in animal models of PCa. Good manufacturing practice production and quality control of these radiotracers using an automated platform was achieved. PET imaging was performed in an LNCaP tumor model with high MAO-A expression. The tumor-to-muscle (T/M) uptake ratio of [11C]harmine (4.5 ± 0.5) was significantly higher than that for 2-[18F]fluoroethyl-harmol (2.3 ± 0.7) and [11C]clorgyline (2.0 ± 0.1). A comparable ex vivo biodistribution pattern in all radiotracers was observed. Furthermore, the tumor uptake of [11C]harmine showed a dramatic reduction (T/M = 1) in a PC3 tumor model with limited MAO-A expression, and radioactivity uptake in LNCaP tumors was blocked in the presence of nonradioactive harmine. Our findings suggest that [11C]harmine may serve as an attractive PET probe for the visualization of MAO-A expression in highly aggressive PCa. These radiotracers have the potential for clinical translation and may aid in the development of personalized therapeutic strategies for PCa patients.
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Affiliation(s)
- Kevin Zirbesegger
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
- Programa de Posgrado, Facultad de Química, Universidad de la República, Av. General Flores 2124, 11800 Montevideo, Uruguay
| | - Laura Reyes
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
| | - Andrea Paolino
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
| | - Rosina Dapueto
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
| | - Florencia Arredondo
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
| | - Juan P Gambini
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
| | - Eduardo Savio
- Centro Uruguayo de Imagenología Molecular (CUDIM), Ricaldoni 2010, 11600 Montevideo, Uruguay
| | - Williams Porcal
- Departamento de Química Orgánica, Facultad de Química, Universidad de la República, Av. General Flores 2124, 11800 Montevideo, Uruguay
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2
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Evans F, Alí-Ruiz D, Rego N, Negro-Demontel ML, Lago N, Cawen FA, Pannunzio B, Sanchez-Molina P, Reyes L, Paolino A, Rodríguez-Duarte J, Pérez-Torrado V, Chicote-González A, Quijano C, Marmisolle I, Mulet AP, Schlapp G, Meikle MN, Bresque M, Crispo M, Savio E, Malagelada C, Escande C, Peluffo H. CD300f immune receptor contributes to healthy aging by regulating inflammaging, metabolism, and cognitive decline. Cell Rep 2023; 42:113269. [PMID: 37864797 DOI: 10.1016/j.celrep.2023.113269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/25/2023] [Accepted: 09/28/2023] [Indexed: 10/23/2023] Open
Abstract
Emerging evidence suggests that immune receptors may participate in many aging-related processes such as energy metabolism, inflammation, and cognitive decline. CD300f, a TREM2-like lipid-sensing immune receptor, is an exceptional receptor as it integrates activating and inhibitory cell-signaling pathways that modulate inflammation, efferocytosis, and microglial metabolic fitness. We hypothesize that CD300f can regulate systemic aging-related processes and ultimately healthy lifespan. We closely followed several cohorts of two strains of CD300f-/- and WT mice of both sexes for 30 months and observed an important reduction in lifespan and healthspan in knockout mice. This was associated with systemic inflammaging, increased cognitive decline, reduced brain glucose uptake observed by 18FDG PET scans, enrichment in microglial aging/neurodegeneration phenotypes, proteostasis alterations, senescence, increased frailty, and sex-dependent systemic metabolic changes. Moreover, the absence of CD300f altered macrophage immunometabolic phenotype. Taken together, we provide strong evidence suggesting that myeloid cell CD300f immune receptor contributes to healthy aging.
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Affiliation(s)
- Frances Evans
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Daniela Alí-Ruiz
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Natalia Rego
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay; Faculty of Sciences, UDELAR, Montevideo, Uruguay
| | - María Luciana Negro-Demontel
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Natalia Lago
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Fabio Andrés Cawen
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Bruno Pannunzio
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Paula Sanchez-Molina
- Department of Cell Biology, Physiology and Immunology, and Institute of Neuroscience, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Laura Reyes
- Uruguayan Center for Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Andrea Paolino
- Uruguayan Center for Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Jorge Rodríguez-Duarte
- Laboratory of Vascular Biology and Drug Development, INDICYO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Valentina Pérez-Torrado
- Metabolic Diseases and Aging Laboratory, INDICYO Program, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Almudena Chicote-González
- Unitat de Bioquímica i Biologia Molecular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Spain
| | - Celia Quijano
- Departamento de Bioquímica y Centro de Investigaciones Biomédicas (CEINBIO), Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Inés Marmisolle
- Departamento de Bioquímica y Centro de Investigaciones Biomédicas (CEINBIO), Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Ana Paula Mulet
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Geraldine Schlapp
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - María Noel Meikle
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Mariana Bresque
- Metabolic Diseases and Aging Laboratory, INDICYO Program, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Martina Crispo
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Eduardo Savio
- Uruguayan Center for Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Cristina Malagelada
- Unitat de Bioquímica i Biologia Molecular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Spain
| | - Carlos Escande
- Metabolic Diseases and Aging Laboratory, INDICYO Program, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Hugo Peluffo
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay; Unitat de Bioquímica i Biologia Molecular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Spain.
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Reyes L, Vilcocq L, Zanota ML, Meille V, Nikitine C, Fongarland P. TiO2‐WOx Coatings on Aluminum Open Cell Foams as Potential Packing Material for Esterification of Glycolic Acid with Ethanol. ChemCatChem 2023. [DOI: 10.1002/cctc.202201415] [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: 01/27/2023]
Affiliation(s)
- Laura Reyes
- CP2M (Catalyse, Polymérisation,Procédés et Matériaux) M2AGIC2 -Molecules, advanced materials, process engineering, catalysis and coordination 43 Boulevard du 11 novembre 191869616 villeurbanne Cedex 69616 Villeurbanne FRANCE
| | - Léa Vilcocq
- CP2M (Catalyse, Polymères,Procédés,Matériaux) M2AGIC2 43 Boulevard du 11novembre 1918 69616 villeurbanne FRANCE
| | - Marie-Line Zanota
- CP2M (Catalyse, Polymérisation, Procédés et Materiaux) M2AGIC2 43 Boulevard du 11novembre 1918 69616 villeurbanne FRANCE
| | - Valérie Meille
- IRCELYON: Institut de Recherches sur la Catalyse et l'Environnement de Lyon IRCE 2 Av. Albert Einstein 69626 Villeurbanne FRANCE
| | - Clémence Nikitine
- CP2M (Catalyse, Polymérisation, Procédés et Matériaux) M2AGIC2 43 Boulevard du 11novembre 1918 69616 villeurbanne FRANCE
| | - Pascal Fongarland
- CP2M (Catalyse , Polymerisation, Procédés et Matériaux) M2AGIC2 43 Boulevard du 11novembre 1918 69616 villeurbanne FRANCE
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Robinson P, Hamana L, Beretta L, Kasembeli M, Bharadwaj U, Chun YS, Wang Y, Wang X, Reyes L, Solis L, Rashid A, Maru D, Vila E, Tsimberidou A, Kaseb A, Kopetz S, Tweardy D. Abstract IA004: Targeting STAT3 with TTI-101, an oral small molecule, to prevent colorectal and hepatocellular cancer. Cancer Prev Res (Phila) 2022. [DOI: 10.1158/1940-6215.tacpad22-ia004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Abstract
Persistent STAT3 activation contributes to 10 of 14 hallmarks of cancer, including inflammation; successful targeting of STAT3 has the potential to prevent and/or treat cancer. However, no small molecule that directly targets STAT3 has been FDA approved. The Tweardy lab used computer-based docking of drug-like compounds into the SH2 domain of STAT3, along with hit-to-lead optimization and medicinal chemistry, to identify TTI-101; TTI-101 treatment was safe, hit its target in tumor cells, and resulted in clinical benefit in a Phase I trial of patients with advanced solid tumors.
The incidence of colorectal cancer (CRC) is increased 20-30 fold in patients with inflammatory bowel disease (IBD), while 90% of hepatocellular carcinomas (HCC) arise in the setting of chronic inflammation. To assess the contribution of STAT3 to CRC secondary to IBD and to HCC, we performed immunohistochemistry (IHC) staining and computer-based scoring for activated STAT3 (phosphorylated on Y705, pY-STAT3) of epithelial and stromal cells within colonic endoscopic biopsies and surgically resected CRC from IBD patients, as well as of tumor cells and hepatocytes within surgically resected HCC tumors. Compared to epithelium of normal tissue, levels of pY-STAT3 were increased 1.9-fold in dysplastic epithelium (p=0.05) and 1.8-fold in the stroma of normal tissue (p<0.0001). In surgically resected HCC tumors, lower pY-STAT3 scores in tumor cells, but not hepatocytes, correlated with longer recurrence free survival (RFS; p=0.003).
TTI-101 administration in three AOM-DSS mouse models of IBD resulted in a dose-dependent reduction in polyps, adenomas, and/or adenocarcinomas. TTI-101 administration to the HepPten- mouse model of NASH-induced HCC resulted in a dose-dependent reduction in liver pY-STAT3 levels. Thus, STAT3 may be a valid target for chemoprevention using TTI-101 in CRC arising from IBD and in HCC.
We thank Tvardi Therapeutics for providing TTI-101 for these studies.
Citation Format: Prema Robinson, Leticia Hamana, Laura Beretta, Moses Kasembeli, Uddalak Bharadwaj, Yun Shin Chun, Yinghong Wang, Xeumei Wang, Laura Reyes, Luisa Solis, Asif Rashid, Dipen Maru, Eduardo Vila, Apostolia Tsimberidou, Ahmed Kaseb, Scott Kopetz, David Tweardy. Targeting STAT3 with TTI-101, an oral small molecule, to prevent colorectal and hepatocellular cancer [abstract]. In: Proceedings of the Second Biennial NCI Meeting: Translational Advances in Cancer Prevention Agent Development (TACPAD); 2022 Sep 7-9. Philadelphia (PA): AACR; Can Prev Res 2022;15(12 Suppl_2): Abstract nr IA004.
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Affiliation(s)
- Prema Robinson
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Leticia Hamana
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Laura Beretta
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | | | | | - Yun Shin Chun
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Yinghong Wang
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Xeumei Wang
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Laura Reyes
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Luisa Solis
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Asif Rashid
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Dipen Maru
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Eduardo Vila
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - Ahmed Kaseb
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - Scott Kopetz
- 1University of Texas MD Anderson Cancer Center, Houston, TX
| | - David Tweardy
- 1University of Texas MD Anderson Cancer Center, Houston, TX
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5
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Reyes L, Nikitine C, Vilcocq L, Fongarland P. Autocatalyzed and heterogeneously catalyzed esterification kinetics of glycolic acid with ethanol. REACT CHEM ENG 2022. [DOI: 10.1039/d1re00418b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the kinetics of the esterification of glycolic acid with ethanol homogeneously autocatalyzed and heterogeneously catalyzed are investigated.
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Affiliation(s)
- Laura Reyes
- Univ Lyon, CNRS, Université Claude-Bernard Lyon 1, CP2M (Catalyse, Polymérisation, Procédés et Matériaux), CPE-Lyon, F-69616, Villeurbanne, France
| | - Clémence Nikitine
- Univ Lyon, CNRS, Université Claude-Bernard Lyon 1, CP2M (Catalyse, Polymérisation, Procédés et Matériaux), CPE-Lyon, F-69616, Villeurbanne, France
| | - Léa Vilcocq
- Univ Lyon, CNRS, Université Claude-Bernard Lyon 1, CP2M (Catalyse, Polymérisation, Procédés et Matériaux), CPE-Lyon, F-69616, Villeurbanne, France
| | - Pascal Fongarland
- Univ Lyon, CNRS, Université Claude-Bernard Lyon 1, CP2M (Catalyse, Polymérisation, Procédés et Matériaux), CPE-Lyon, F-69616, Villeurbanne, France
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6
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Giglio J, Fernandez S, Martinez A, Zeni M, Reyes L, Rey A, Cerecetto H. Glycogen Synthase Kinase-3 Maleimide Inhibitors As Potential PET-Tracers for Imaging Alzheimer's Disease: 11C-Synthesis and In Vivo Proof of Concept. J Med Chem 2021; 65:1342-1351. [PMID: 34464131 DOI: 10.1021/acs.jmedchem.1c00769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we present the evaluation of 11C-labeled-maleimides as radiotracers for positron emission tomography imaging of GSK-3 associated with Alzheimer's disease (AD). 3-Acetyl-4-(1-[11C]-methyl-1H-indol-3-yl)[1H]pyrrole-2,5-dione ([11C]-2) was obtained by direct methylation using [11C]-CH3I and Cs2CO3 in DMF with a 31 ± 4% radiochemical yield and a radiochemical purity of 97.7 ± 0.8%. [11C]-2 was stable both in its final formulation and in human plasma for 120 min and had a plasma protein binding of 70 ± 1% and a LogD7.4 value of 1.84 ± 0.04. [11C]-2 ex vivo biodistributions in healthy animals demonstrated significant brain uptake and retention, showing its ability to penetrate the intact blood-brain barrier. In vivo PET imaging in mice bearing AD showed, with respect to normal animals, significant differences in uptake in the hypothalamus, the striatum, and the amygdala and a significant increase in amygdala uptake in later stages of the pathology. These results are very promising, and further studies are being performed for a complete validation of this compound as novel tracer for AD.
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Affiliation(s)
- Javier Giglio
- Centro Uruguayo de Imagenología Molecular (CUDIM), 11600 Montevideo, Uruguay.,Área de Radioquímica, Facultad de Quimíca, Universidad de la República, 11800 Montevideo, Uruguay
| | - Soledad Fernandez
- Centro Uruguayo de Imagenología Molecular (CUDIM), 11600 Montevideo, Uruguay.,Área de Radioquímica, Facultad de Quimíca, Universidad de la República, 11800 Montevideo, Uruguay
| | - Ana Martinez
- Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Ramiro de Maeztu 9, 28040 Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Instituto Carlos III, 28031 Madrid, Spain
| | - Maia Zeni
- Centro Uruguayo de Imagenología Molecular (CUDIM), 11600 Montevideo, Uruguay.,Graduate Program in Chemistry, Facultad de Quimíca, Universidad de la República, 11800 Montevideo, Uruguay
| | - Laura Reyes
- Centro Uruguayo de Imagenología Molecular (CUDIM), 11600 Montevideo, Uruguay
| | - Ana Rey
- Área de Radioquímica, Facultad de Quimíca, Universidad de la República, 11800 Montevideo, Uruguay
| | - Hugo Cerecetto
- Grupo de Química Orgánica Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay.,Área de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay
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7
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Topczewski TE, Di Somma A, Culebras D, Reyes L, Torales J, Tercero A, Langdon C, Alobid I, Torne R, Roldan P, Prats-Galino A, Ensenat J. Endoscopic endonasal surgery to treat intrinsic brainstem lesions: correlation between anatomy and surgery. Rhinology 2021; 59:191-204. [PMID: 33346253 DOI: 10.4193/rhin20.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The endoscopic endonasal approach (EEA) has been proposed as an alternative in the surgical removal of ventral brainstem lesions. However, the feasibility and limitations of this approach to treat such pathologies are still poorly understood. This study aimed to report our experience in five consecutive cases of intrinsic brainstem lesions that were managed via an EEA, as well as the specific anatomy of each case. METHODS All patients were treated in a single center by a multidisciplinary surgical team between 2015 and 2019. Before surgery, a dedicated anatomical analysis of the brainstem safe entry zone was performed, and proper surgical planning was carried out. Neurophysiological monitoring was used in all cases. Anatomical dissections were performed in three human cadaveric heads using 0° and 30° endoscopes, and specific 3D reconstructions were executed using Amira 3D software. RESULTS All lesions were located at the level of the ventral brainstem. Specifically, one mesencephalic cavernoma, two pontine ca- vernomas, one pontine gliomas, and one medullary diffuse midline glioma were reported. Cerebrospinal fluid leak was the major complication that occurred in one case (medullary diffuse midline glioma). From an anatomical standpoint, three main safe entry zones were used, namely the anterior mesencephalic zone (AMZ), the peritrigeminal zone (PTZ, used in two cases), and the olivar zone (OZ). Reviewing the literature, 17 cases of various brainstem lesions treated using an EEA were found. CONCLUSIONS To our knowledge, this was the first preliminary clinical series of intrinsic brainstem lesions treated via an EEA presented in the literature. The EEA can be considered a valid surgical alternative to traditional transcranial approaches to treat selected intra-axial brainstem lesions located at the level of the ventral brainstem. To achieve good results, surgery must involve comprehensive anatomical knowledge, meticulous preoperative surgical planning, and intraoperative neurophysiological moni- toring.
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Affiliation(s)
- T E Topczewski
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - A Di Somma
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain.,Laboratory of Surgical Neuroanatomy (LSNA), Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - D Culebras
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - L Reyes
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - J Torales
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - A Tercero
- Institut Clínic de Neurociències (ICN), Department of Neurology, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - C Langdon
- Rhinology Unit and Smell Clinic, Otorhinolaryngology Department, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - I Alobid
- Rhinology Unit and Smell Clinic, Otorhinolaryngology Department, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
| | - R Torne
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - P Roldan
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
| | - A Prats-Galino
- Laboratory of Surgical Neuroanatomy (LSNA), Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - J Ensenat
- Institut Clínic de Neurociències (ICN), Department of Neurological Surgery, Hospital Clínic de Barcelona, Universidad de Barcelona, Barcelona, Spain
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8
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Reyes L, Drammeh A, Paulino J, Downer J, Mejia-Paulino R, Cabezas V, Dodaj X, Harris K, Cadet MJ. A student-led quality improvement project on fall prevention. Nursing 2021; 51:15-17. [PMID: 33346611 DOI: 10.1097/01.nurse.0000721800.82909.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Laura Reyes
- At Bronx Community College in Bronx, N.Y. Laura Reyes , Amie Drammeh , Jennifer Paulino , Jodian Downer , Rachel Mejia-Paulino , Victoria Cabezas , and Xhuliano Dodaj are all current or former nursing students and Kenya Harris is the chairperson. Myriam Jean Cadet is an adjunct professor at the State University of New York Downstate Medical Center in Brooklyn
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9
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Rivera-Marrero S, Bencomo-Martínez A, Orta Salazar E, Sablón-Carrazana M, García-Pupo L, Zoppolo F, Arredondo F, Dapueto R, Daniela Santi M, Kreimerman I, Pardo T, Reyes L, Galán L, León-Chaviano S, Espinosa-Rodríguez LA, Menéndez-Soto Del Valle R, Savio E, Díaz Cintra S, Rodríguez-Tanty C. A new naphthalene derivative with anti-amyloidogenic activity as potential therapeutic agent for Alzheimer's disease. Bioorg Med Chem 2020; 28:115700. [PMID: 33069076 DOI: 10.1016/j.bmc.2020.115700] [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: 07/24/2020] [Accepted: 08/04/2020] [Indexed: 11/24/2022]
Abstract
The aggregation of β-amyloid peptides is associated to neurodegeneration in Alzheimer's disease (AD) patients. Consequently, the inhibition of both oligomerization and fibrillation of β-amyloid peptides is considered a plausible therapeutic approach for AD. Herein, the synthesis of new naphthalene derivatives and their evaluation as anti-β-amyloidogenic agents are presented. Molecular dynamic simulations predicted the formation of thermodynamically stable complexes between the compounds, the Aβ1-42 peptide and fibrils. In human microglia cells, these compounds inhibited the aggregation of Aβ1-42 peptide. The lead compound 8 showed a high affinity to amyloid plaques in mice brain ex vivo assays and an adequate log Poct/PBS value. Compound 8 also improved the cognitive function and decreased hippocampal β-amyloid burden in the brain of 3xTg-AD female mice. Altogether, our results suggest that 8 could be a novel therapeutic agent for AD.
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Affiliation(s)
- Suchitil Rivera-Marrero
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Alberto Bencomo-Martínez
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Erika Orta Salazar
- Institute of Neurobiology (INB), Developmental Neurobiology and Neurophysiology, UNAM Juriquilla Querétaro, Mexico
| | - Marquiza Sablón-Carrazana
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Laura García-Pupo
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Florencia Zoppolo
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Florencia Arredondo
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Rosina Dapueto
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - María Daniela Santi
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Ingrid Kreimerman
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Tania Pardo
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Laura Reyes
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Lídice Galán
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Samila León-Chaviano
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Luis A Espinosa-Rodríguez
- Center of Genetic Engineering and Biotechnology (CIGB), Ave 31 e/ 158 and 190, Havana, CP10600, Cuba
| | - Roberto Menéndez-Soto Del Valle
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba
| | - Eduardo Savio
- Biomedical and Pharmaceutical Chemistry, Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Sofía Díaz Cintra
- Institute of Neurobiology (INB), Developmental Neurobiology and Neurophysiology, UNAM Juriquilla Querétaro, Mexico.
| | - Chryslaine Rodríguez-Tanty
- Department of Neurochemistry, Cuban Center for Neurosciences, Street. 190 e/ 25 and 27, Cubanacan, Playa, Havana, CP 11600, Cuba.
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Romero C, Heredia R, Bolio M, Miranda L, Reyes L, Arredondo M, Flores A. Comparison of In Vitro Efficacy of Six Disinfectants on the Hatching of Larval Eggs of Toxocara canis. Iran J Parasitol 2020; 15:315-320. [PMID: 33082795 PMCID: PMC7548458 DOI: 10.18502/ijpa.v15i3.4195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background: The environmental contamination with Toxocara canis eggs increases the risk of dissemination and transmission of the parasite in dogs and paratenic hosts such as humans. We aimed to evaluate different disinfectants to compare their effect on T. canis eggs. Methods: For its realization, 850 embryonated eggs were obtained, which were suspended in a solution of 5% formaldehyde and distilled water in Eppendorf tubes. In the tubes containing the 850 embryonated eggs, researchers was added 0.5 mL of each solution (enzymatic solution, sodium hypochlorite, iodopovidone, quaternary of ammonium, benzalkonium chloride, and super oxidation solution). After mixing, an aliquot was taken, observed under the microscope, and the number of broken eggs counted at different times to find the most effective ovicidal moment. Results: The enzymatic disinfectant present a significant difference (P = 0.05) with 276.06 broken eggs followed by ammonium with 105.20 broken eggs. After 10 min, the ammonium solution was the one that showed a significant difference of 50.50 hatched eggs, followed by the enzymatic 26.80 and hypochlorite 25.00 treatments. After 20 min, the enzymatic solution treatment showed a significant difference with the other solutions showing an increase of 98.80 broken eggs. In the 30 and 40-min times, only the enzymatic treatment showed a significant difference of 334.10 and 381.70 of broken eggs respectively. Conclusion: The enzymatic solution has the greatest ovicidal effect against the eggs of T. canis to present a greater number of broken eggs in a given time between 20 and 40 minutes.
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Affiliation(s)
- Camilo Romero
- Research Department, DERMAVET Veterinary Hospital, Mexico City, Mexico
| | - Rafael Heredia
- Agricultural Sciences and Natural Resources, UAEM Amecameca University Center, Autonomous University of the State of Mexico, State of Mexico, Mexico
| | - Manuel Bolio
- Faculty of Veterinary Medicine and Zootechnics, Autonomous University of Yucatan, Mérida, Yucatán, México
| | - Laura Miranda
- Research Department, DERMAVET Veterinary Hospital, Mexico City, Mexico
| | - Laura Reyes
- Research Department, DERMAVET Veterinary Hospital, Mexico City, Mexico
| | - Mauricio Arredondo
- Department of Life Sciences, Guanajuato University, Irapuato-Salamanca Campus, Irapuato, Guanajuato, Mexico
| | - Ariadna Flores
- Agricultural Sciences and Natural Resources, UAEM Amecameca University Center, Autonomous University of the State of Mexico, State of Mexico, Mexico
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11
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Bommi P, Wu W, Reyes L, Evans K, Thirumurthi S, Lynch P, Sinha K, Vilar E. Abstract 17: Ex-vivo assessment of the effect of Simvastatin in intestinal epithelium of Lynch Syndrome patients. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Lynch Syndrome (LS) is a hereditary condition secondary to germline mutations in DNA mismatch repair (MMR) genes, which predisposes patients to develop different tumor types but mainly colorectal and endometrial cancers. Due to the genetic predisposition, chemopreventive strategies become critical in these individuals. One such chemopreventive compound, statin, a potent pharmacologic inhibitor of cholesterol biosynthesis, is known to exert other pleotropic effects such as modulation of cell proliferation, apoptosis, and inflammation, mainly due to inhibition of the mevalonate pathway. Although, chemoprevention studies in the past were performed in cancer stem cell models the effects have not been previously assessed in the physiologic and MMR-deficient stem cell niche. Here, we have successfully established ex-vivo cultures of crypt-villus structures (termed ‘mini-guts' or organoids) in order to interrogate the chemopreventive effects of statins in Lynch Syndrome patients.
Methods: Fresh endoscopic biopsy samples from a total of six LS patients followed at The University of Texas MD Anderson Cancer Center were obtained and ex-vivo organoid cultures were established. Each organoid line (passage < P6) was treated with two different doses of Simvastatin (5 and 10 µM) or DMSO (control) for 48 hours. Total RNA was isolated from organoids treated with control and Simvastatin 10 µM and RNASeq analysis was performed using Illumina HiSeq 4000. Validation of several critical genes was performed by qRT-PCR assay.
Results: RNAseq analysis accounted for a total of 4,386 genes dysregulated in organoids treated with Simvastatin as compared to control. Stem cell markers, LGR5 and ASCL2, and differentiation markers, KRT20 (enterocytes) and MUC2 (goblet), were found to be induced by simvastatin. Gene Set Enrichment Analysis (GSEA) using Hallmark pathway gene sets showed significant enrichment for E2F target genes apart from canonical cholesterol homeostasis pathway. Ingenuity pathways analysis (IPA) revealed a list of top 10 genes which are upregulated/downregulated and implicated in cancer pathway. Validation of selected E2F Hallmark pathway genes (E2F1, TOP2A, Survivin, and KI-67) and IPA cancer pathway genes (KLF2, KLF6, EZH2, p57, and p21) showed a significant and dose dependent modulation upon treatment with Simvastatin.
Conclusions: Treatment with Simvastatin exhibited a profound effect on key genes involved in maintenance of stem cell niche in patient-derived organoids from LS. Simvastatin had a significant effect on E2F target genes implicated in regulation of cell cycle and proliferation via modulation of Ki-67, TOP2A, and Survivin. Along with increase in cyclin-dependent kinase inhibitor p21, there was significant induction of p57, a candidate tumor suppressor gene. Hence, Simvastatin, while it maintains the stem niche, exerts its anti-proliferative effects by specifically modulating genes involved in cell cycle and apoptosis.
Citation Format: Prashant Bommi, Wenhui Wu, Laura Reyes, Kyera Evans, Selvi Thirumurthi, Patrick Lynch, Krishna Sinha, Eduardo Vilar. Ex-vivo assessment of the effect of Simvastatin in intestinal epithelium of Lynch Syndrome patients [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 17.
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Affiliation(s)
| | - Wenhui Wu
- UT MD Anderson Cancer Center, Houston, TX
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12
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García EL, Carvajal A, Reyes L, Tomada N. Sexual Medicine. Ibero-American Issue. A Global Project. Actas Urol Esp 2020; 44:261. [PMID: 32620214 DOI: 10.1016/j.acuro.2020.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 11/30/2022]
Affiliation(s)
- E Lledó García
- Sección de Andrología y Cirugía Reconstructiva Uretro-Genital. Servicio de Urología. Hospital General U. Gregorio Marañón. Madrid, España.
| | - A Carvajal
- Departamento de Urología. Universidad CES. Medellín, Colombia
| | - L Reyes
- Servicio de Urología. Hospital Médica Sur. Ciudad de México, México
| | - N Tomada
- Servicio de Urología. Hospital da Luz. Porto, Portugal
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Reyes L, Getachew H, Dunn WA, Progulske-Fox A. Porphyromonas gingivalis W83 traffics via ICAM1 in microvascular endothelial cells and alters capillary organization in vivo. J Oral Microbiol 2020; 12:1742528. [PMID: 32341760 PMCID: PMC7170297 DOI: 10.1080/20002297.2020.1742528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 01/16/2023] Open
Abstract
Objective: Microvascular dysfunction is a feature of periodontal disease. P. gingivalis, one of the most common oral bacteria present in gingival tissue biofilms, has also been identified in the gingival capillaries of patients with chronic periodontitis. We sought to determine the effect of P. gingivalis W83 infection on microvascular endothelium in vivo and in vitro. Methods and Results: Interdental papillae of rats with P. gingivalis-induced alveolar bone loss had a more dilated and denser subepithelial capillary network than uninfected controls. P. gingivalis W83 was detected in the epithelial layers, the subepithelial connective tissue matrix, and subgingival capillaries. P. gingivalis invaded human dermal microvascular endothelial cells (HD-MVECS) and persisted up termination (24 h). Colocalization analysis at 2.5, 6, and 24 h post-inoculation showed that 79-88% of internalized bacteria were in ICAM-1 positive endosomes, and 10-39% were in Rab5, Rab7, or LAMP1 positive compartments, but never in autophagosomes. Antibody-based blockade of ICAM-1 significantly reduced W83 invasion in HD-MVECS. P. gingivalis infected HD-MVECS were unable to form vascular networks in Matrigel. Conclusions: P. gingivalis perturbs microvascular endothelial function and invasion of these cells via ICAM-1 may be important for microbial persistence within tissues.
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Affiliation(s)
- L Reyes
- Department of Pathobiological Sciences, University of Wisconsin - Madison, School of Veterinary Medicine, Madison, WI, USA
| | - H Getachew
- Department of Oral Biology, College of Dentistry, Center for Molecular Microbiology University of Florida, Gainesville, FL, USA
| | - W A Dunn
- Department of Oral Biology, College of Dentistry, Center for Molecular Microbiology University of Florida, Gainesville, FL, USA.,Department of Anatomy and Cell Biology, University of Florida, Gainesville, FL, USA
| | - A Progulske-Fox
- Department of Oral Biology, College of Dentistry, Center for Molecular Microbiology University of Florida, Gainesville, FL, USA
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López-Micó C, Reneses B, Gallego L, Maria Sagrario G, Fernandez R, Huidobro Á, Reyes L, Gómez P. Perceived and anticipating stigma in schizophrenia in relationship with depressive symptoms and functionality degree. Eur Psychiatry 2020. [DOI: 10.1016/j.eurpsy.2016.01.655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
IntroductionPerceived and anticipated stigma is relevant issues in patients with schizophrenia. Stigma has negative consequences both in quality of life and in the course of illness.ObjectivesTo analyze the degree of perceived and anticipated stigma and discrimination in patients with schizophrenia and their relationship with clinical and socio-demographic variables.MethodsA cross-sectional study was carried out in a sample of 100 patients with diagnosis of schizophrenia, 18 or more years old, clinically stabilized, without axis I DSM-IV comorbidity. Patients received treatment in the outpatient services of a catchment area in Madrid. Perceived and anticipated discrimination was evaluated trough the DISC-12 (Discrimination and Stigma scale). Other study variables were: socio-demographic characteristics, symptoms of depression (Calgary Scale) and functionality degree measured by Global Assessment of Function (GAF).ResultsThe presence of symptoms of depression evaluated by the Calgary Scale and low degree of functionality measured by GAF are associated with greater feelings of discrimination and stigma, especially in the sub-scales of experienced and anticipated discrimination of the DISC 12. Anticipated stigma is higher in men than in women while the rest sub scales of the DISC-12 do not correlate with gender or other sociodemographic variables.ConclusionsPreventive strategies to avoid the stigma in schizophrenia should consider some characteristics associated with disease, especially the degree of functionality and presence of depressive symptoms.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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15
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Watkins JM, von Chamier M, Brown MB, Reyes L, Hayward LF. Prenatal infection with Mycoplasma pulmonis in rats exaggerates the angiotensin II pressor response in adult offspring. Am J Physiol Regul Integr Comp Physiol 2019; 318:R338-R350. [PMID: 31850818 DOI: 10.1152/ajpregu.00194.2019] [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] [Indexed: 11/22/2022]
Abstract
Exposure to different stressors in utero is linked to adult diseases such as obesity and hypertension. In this study, the impact of prenatal infection (PNI) on adult body weight and cardiovascular function was evaluated using a naturally occurring rodent pathogen, Mycoplasma pulmonis (MP). Pregnant Sprague-Dawley rats were infected with MP on gestational day 14 and gave birth naturally. Adult PNI offspring weighed more than controls, but resting mean arterial pressure (MAP) was unchanged. Subcutaneous injection of angiotensin II (10 μg/kg) elicited a rise in MAP that was greater in both male and female PNI offspring compared with controls (P < 0.03). The accompanying reflex bradycardia was similar to the controls, suggesting that PNI induced baroreflex dysfunction. Subcutaneous nicotine administration, a potent cardiorespiratory stimulus, also elicited a transient rise in MAP that was generally greater in the PNI group, but the change in MAP from baseline was only significant in the PNI females compared with controls (P < 0.03). Elevated body weight and cardiovascular reactivity in the PNI offspring was associated with an increase in the ratio of hypothalamic corticotrophin-releasing hormone receptors type 1 to type 2 gene expression in both sexes compared with controls. These findings support previous studies demonstrating that PNI induces alterations in cardiovascular function and body weight. Yet, unlike previous studies utilizing other models of PNI (e.g., endotoxin), MP PNI did not induce resting hypertension. Thus, our study provides a foundation for future studies evaluating the cardiovascular risks of offspring exposed to microbial challenges in utero.
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Affiliation(s)
- J M Watkins
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - M von Chamier
- Department of Infectious Disease and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - M B Brown
- Department of Infectious Disease and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - L Reyes
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - L F Hayward
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
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Delgado H, Agrati D, Machado L, Reyes L, Savio E, Engler H, Ferreira A. Cocaine treatment before pregnancy differentially affects the anxiety and brain glucose metabolism of lactating rats if performed during adulthood or adolescence. Behav Brain Res 2019; 372:112070. [PMID: 31276701 DOI: 10.1016/j.bbr.2019.112070] [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: 03/13/2019] [Revised: 06/27/2019] [Accepted: 07/01/2019] [Indexed: 10/26/2022]
Abstract
Cocaine exposure disrupts the maternal behavior of lactating rats, yet it is less known whether it alters the affective changes that accompany motherhood. As the long-term action of cocaine on anxiety varies according to the developmental stage of the individuals, this study aimed to compare the effect of a chronic treatment with cocaine to adult and adolescent non-pregnant females on their anxiety-like behavior and basal brain metabolic activity during lactation. Thus, adult and adolescent virgin rats were exposed to cocaine (0.0 or 15.0 mg/kg ip) during 10 days and were mated four days later. Anxiety behavior was evaluated on postpartum days 3-4 in the elevated plus maze test, and the basal brain glucose metabolism was determined on postpartum days 7-9 by means of [18F] fluorodeoxyglucose positron emission tomography. Cocaine treatment during adulthood increased the anxiety-like behavior of lactating females whereas its administration during adolescence decreased it. Also, the basal glucose metabolism of the medial prefrontal cortex differed between lactating females treated with cocaine during adulthood and adolescence. These differential effects of cocaine, according to the age at which the drug was administered, support the idea that the adolescent and adult brains have a distinct susceptibility to this drug, which leads to divergent long-term changes in the neural circuits that regulate anxiety during lactation.
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Affiliation(s)
- Hernán Delgado
- Department of Physiology and Nutrition, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Basic Research Center in Psychology, Facultad de Psicología, Universidad de la República, Montevideo, Uruguay.
| | - Daniella Agrati
- Department of Physiology and Nutrition, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Luna Machado
- Department of Physiology and Nutrition, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Laura Reyes
- Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Eduardo Savio
- Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Henry Engler
- Uruguayan Centre of Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Annabel Ferreira
- Department of Physiology and Nutrition, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.
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17
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Hutchinson EB, Chatterjee M, Reyes L, Djankpa FT, Valiant WG, Dardzinski B, Mattapallil JJ, Pierpaoli C, Juliano SL. The effect of Zika virus infection in the ferret. J Comp Neurol 2019; 527:1706-1719. [PMID: 30680733 PMCID: PMC6593673 DOI: 10.1002/cne.24640] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 01/01/2023]
Abstract
Although initial observations of infections with the Zika virus describe a mild illness, more recent reports show that infections by Zika result in neurotropism. In 2015, substantial congenital malformations were observed, with numerous infants born with microcephaly in Brazil. To study the underlying mechanism and effects of the disease, it is critical to find suitable animal models. Rodents lack an immune system parallel to humans and also have lissencephalic brains, which are likely to react differently to infections. As the smallest gyrencephalic mammal, ferrets may provide an important animal model to study the Zika virus, as their brains share many characteristics with humans. To evaluate the prospect of using ferrets to study Zika virus infection, we injected seven pregnant jills with the PR strain subcutaneously on gestational day 21, corresponding to the initiation of corticogenesis. These injections resulted in mixed effects. Two animals died of apparent infection, and all kits were resorbed in another animal that did not die. The other four animals remained pregnant until gestational day 40, when the kits were delivered by caesarian section. We evaluated the animals using CT, MRI, diffusion tensor imaging, and immunohistochemistry. The kits displayed a number of features compatible with an infection that impacted both the brain and skull. The outcomes, however, were variable and differed within and across litters, which ranged from the absence of observable abnormalities to prominent changes, suggesting differential vulnerability of kits to infection by the Zika virus or to subsequent mechanisms of neurodevelopmental disruption.
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Affiliation(s)
- Elizabeth B Hutchinson
- Quantitative Medical Imaging Section, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland
| | | | - Laura Reyes
- Quantitative Medical Imaging Section, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland
| | | | | | | | - Joseph J Mattapallil
- Department of Microbiology and Immunology, Bethesda, Maryland.,Program in Emerging and Infectious Disease, Bethesda, Maryland
| | - Carlo Pierpaoli
- Quantitative Medical Imaging Section, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland
| | - Sharon L Juliano
- Program in Neuroscience, USUHS, Bethesda, Maryland.,Department of Anatomy Physiology and Genetics, Bethesda, Maryland
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Reyes L. Sustained transmission of measles virus causing outbreaks in the Philippines, 2013–2018. Int J Infect Dis 2019. [DOI: 10.1016/j.ijid.2018.11.325] [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: 11/27/2022] Open
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Rivera-Marrero S, Fernández-Maza L, León-Chaviano S, Sablón-Carrazana M, Bencomo-Martínez A, Perera-Pintado A, Prats-Capote A, Zoppolo F, Kreimerman I, Pardo T, Reyes L, Balcerzyk M, Dubed-Bandomo G, Mercerón-Martínez D, Espinosa-Rodríguez LA, Engler H, Savio E, Rodríguez-Tanty C. [ 18F]Amylovis as a Potential PET Probe for β-Amyloid Plaque: Synthesis, In Silico, In vitro and In vivo Evaluations. Curr Radiopharm 2019; 12:58-71. [PMID: 30605068 PMCID: PMC6463402 DOI: 10.2174/1874471012666190102165053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 11/20/2018] [Revised: 12/21/2018] [Accepted: 12/24/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common form of dementia. Neuroimaging methods have widened the horizons for AD diagnosis and therapy. The goals of this work are the synthesis of 2-(3-fluoropropyl)-6-methoxynaphthalene (5) and its [18F]-radiolabeled counterpart ([18F]Amylovis), the in silico and in vitro comparative evaluations of [18F]Amylovis and [11C]Pittsburg compound B (PIB) and the in vivo preclinical evaluation of [18F]Amylovis in transgenic and wild mice. METHODS Iron-catalysis cross coupling reaction, followed by fluorination and radiofluorination steps were carried out to obtain 5 and 18F-Amylovis. Protein/Aß plaques binding, biodistribution, PET/CT Imaging and immunohistochemical studies were conducted in healthy/transgenic mice. RESULTS The synthesis of 5 was successful obtained. Comparative in silico studies predicting that 5 should have affinity to the Aβ-peptide, mainly through π-π interactions. According to a dynamic simulation study the ligand-Aβ peptide complexes are stable in simulation-time (ΔG = -5.31 kcal/mol). [18F]Amylovis was obtained with satisfactory yield, high radiochemical purity and specific activity. The [18F]Amylovis log Poct/PBS value suggests its potential ability for crossing the blood brain barrier (BBB). According to in vitro assays, [18F]Amylovis has an adequate stability in time. Higher affinity to Aβ plaques were found for [18F]Amylovis (Kd 0.16 nmol/L) than PIB (Kd 8.86 nmol/L) in brain serial sections of 3xTg-AD mice. Biodistribution in healthy mice showed that [18F]Amylovis crosses the BBB with rapid uptake (7 %ID/g at 5 min) and good washout (0.11±0.03 %ID/g at 60 min). Comparative PET dynamic studies of [18F]Amylovis in healthy and transgenic APPSwe/PS1dE9 mice, revealed a significant high uptake in the mice model. CONCLUSION The in silico, in vitro and in vivo results justify that [18F]Amylovis should be studied as a promissory PET imaging agent to detect the presence of Aβ senile plaques.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Eduardo Savio
- Address correspondence to this author at Radiopharmacy R&D, Uruguayan Center of Molecular Imaging (CUDIM), Montevideo, Uruguay; Tel: 598-24803238; Ext: 122; E-mail:
| | - Chryslaine Rodríguez-Tanty
- Address correspondence to this author at Radiopharmacy R&D, Uruguayan Center of Molecular Imaging (CUDIM), Montevideo, Uruguay; Tel: 598-24803238; Ext: 122; E-mail:
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Reyes L, Delos Angeles A, Exner D, Morton J, Quinn F, Raj S, Wilton S, Yuen B. CONNECTING PATIENTS CLOSER TO HOME: AN INTEGRATED REMOTE MONITORING (RM) MODEL OF CARE. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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21
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Kreimerman I, Mora-Ramirez E, Reyes L, Bardiès M, Savio E, Engler H. Dosimetry and Toxicity Studies of the Novel Sulfonamide Derivative of Sulforhodamine 101([18F]SRF101) at a Preclinical Level. Curr Radiopharm 2018; 12:40-48. [PMID: 30173658 DOI: 10.2174/1874471011666180830145304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/03/2018] [Accepted: 08/27/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND The SR101 N-(3-[18F]Fluoropropyl) sulfonamide ([18F]SRF101) is a Sulforhodamine 101 derivative that was previously synthesised by our group. The fluorescent dye SR101 has been reported as a marker of astroglia in the neocortex of rodents in vivo. OBJECTIVE The aim of this study was to perform a toxicological evaluation of [18F]SRF101 and to estimate human radiation dosimetry based on preclinical studies. METHODS Radiation dosimetry studies were conducted based on biokinetic data obtained from a mouse model. A single-dose toxicity study was carried out. The toxicological limit chosen was <100 μg, and allometric scaling with a safety factor of 100 for unlabelled SRF101 was selected. RESULTS The absorbed and effective dose estimated using OLINDA/EXM V2.0 for male and female dosimetric models presented the same tendency. The highest total absorbed dose values were for different sections of the intestines. The mean effective dose was 4.03 x10-3 mSv/MBq and 5.08 x10-3 mSv/MBq for the male and female dosimetric models, respectively, using tissue-weighting factors from ICRP-89. The toxicity study detected no changes in the organ or whole-body weight, food consumption, haematologic or clinical chemistry parameters. Moreover, lesions or abnormalities were not found during the histopathological examination. CONCLUSION The toxicological evaluation of SRF101 verified the biosafety of the radiotracer for human administration. The dosimetry calculations revealed that the radiation-associated risk of [18F]SRF101 would be of the same order as other 18F radiopharmaceuticals used in clinical applications. These study findings confirm that the novel radiotracer would be safe for use in human PET imaging.
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Affiliation(s)
- Ingrid Kreimerman
- Uruguayan Centre of Molecular Imaging (CUDIM), Radiopharmacy Department, Montevideo, Uruguay
| | - Erick Mora-Ramirez
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France.,Universite Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France.,Universidad de Costa Rica, CICANUM-Escuela de Fisica, San Jose, Costa Rica
| | - Laura Reyes
- Uruguayan Centre of Molecular Imaging (CUDIM), Radiopharmacy Department, Montevideo, Uruguay
| | - Manuel Bardiès
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France.,Universite Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
| | - Eduardo Savio
- Uruguayan Centre of Molecular Imaging (CUDIM), Radiopharmacy Department, Montevideo, Uruguay
| | - Henry Engler
- Uruguayan Centre of Molecular Imaging (CUDIM), Radiopharmacy Department, Montevideo, Uruguay
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Muñoz L, Velandia A, Reyes L. Concordance evaluation among three methods for cardiac output measurement in adult patients. J Cardiothorac Vasc Anesth 2018. [DOI: 10.1053/j.jvca.2018.08.150] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Muñoz L, Reyes L, Jimenez J, Peña J. Anesthesia for minimally invasive cardiac surgery: a narrative review. J Cardiothorac Vasc Anesth 2018. [DOI: 10.1053/j.jvca.2018.08.141] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Medcalf A, Reyes L, Davis J, Weymer S, Fremgen D, Schendel C, Rezner B, Shoemaker D, Abbot S. Phase 1 manufacturing of ProTmune, a next-generation hematopoietic cell graft for patients with hematologic malignancies. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Vermeulen E, Bastida R, Berninsone LG, Bordino P, Failla M, Fruet P, Harris G, Iñíguez M, Marchesi MC, Petracci P, Reyes L, Sironi M, Bräger S. A review on the distribution, abundance, residency, survival and population structure of coastal bottlenose dolphins in Argentina. ACTA ACUST UNITED AC 2018. [DOI: 10.5597/00233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Although bottlenose dolphins Tursiops truncatus are among the most common delphinid species, global population trends remain poorly understood. To improve the knowledge of the species in the Southwest Atlantic Ocean, thispaper reviews all available data related to the distribution and occurrence, abundance, residency and ranging patterns, group size and composition, survival and reproduction and population structure of the coastal bottlenose dolphin in Argentina. Most information proved to be scattered in time and space. Based on the available data, total abundance of coastal bottlenose dolphins in Argentina appears to be low. Data show sightings decreased notably since the 1990s in the northern province of Buenos Aires and the province of Chubut, with the species having disappeared completely from the former region. Data also indicated that two genetically and morphologically distinct coastal populations occur in Argentinean coastal waters, with a sympatric distribution in the provinces of Río Negro and Chubut. One is an isolated ‘Evolutionary Signifcant Unit’ within the larger Southwest Atlantic, whereas the other population appears to be genetically related to the Southwest Atlantic offshore ecotype. In the absence of more substantial data, the present information is pertinent to our scientifc knowledge of the species in the country, collating all published information as well as information from grey literature and previously unpublished data. However, the available information appears to remain insufcient to explain the apparent decline in sightings and to assess the remaining abundance nationwide accurately. Therefore, we strongly recommend increased research efforts for an in-depth assessment of the species’ population status in Argentina.
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Daalderop LA, Wieland BV, Tomsin K, Reyes L, Kramer BW, Vanterpool SF, Been JV. Periodontal Disease and Pregnancy Outcomes: Overview of Systematic Reviews. JDR Clin Trans Res 2017; 3:10-27. [PMID: 30370334 PMCID: PMC6191679 DOI: 10.1177/2380084417731097] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Periodontal disease is very common during pregnancy. Although it has been linked
to adverse pregnancy outcomes, systematic reviews have reached discrepant
conclusions on these links. Therefore, we conducted a systematic overview of
systematic reviews studying the association between periodontal disease and
adverse pregnancy outcomes. We searched 6 online databases up to November 2016
and hand-searched references and citations of eligible papers. Systematic
reviews of studies comparing pregnancy outcomes among women with and without
periodontal disease were eligible for inclusion. Primary outcomes were maternal
mortality, preterm birth, and perinatal mortality. Two reviewers extracted data
and assessed risk of bias of individual systematic reviews. Findings are
described in tabular and narrative form. Twenty-three systematic reviews
(including between 3 and 45 studies) were included. None reported the
association between periodontal disease and maternal or perinatal mortality.
Systematic reviews with the lowest risk of bias consistently demonstrated
positive associations between periodontal disease and preterm birth (relative
risk, 1.6; 95% confidence interval, 1.3 to 2.0; 17 studies, 6,741 participants),
low birth weight (LBW; relative risk, 1.7; 95% CI, 1.3 to 2.1; 10 studies, 5,693
participants), preeclampsia (odds ratio, 2.2; 95% CI, 1.4 to 3.4; 15 studies,
5,111 participants), and preterm LBW (relative risk 3.4; 95% CI, 1.3 to 8.8; 4
studies, 2,263 participants). Based on these figures, estimated
population-attributable fractions for periodontal disease were 5% to 38% for
preterm birth, 6% to 41% for LBW, and 10% to 55% for preeclampsia. In terms of
limitations, as several primary studies did not adjust for confounding,
meta-analyses may have overestimated the strength of the associations under
study. Due to substantial overlap in included primary studies, we could not
aggregate results across reviews. Consistent evidence from systematic reviews
with low risk of bias indicates that pregnant women with periodontal disease are
at increased risk of developing preeclampsia and delivering a preterm and/or LBW
baby (PROSPERO: CRD42015030132). Knowledge Transfer Statement: This study highlights that periodontal
disease is an important risk factor for several common adverse pregnancy
outcomes. Clinicians should be aware of this link to guide risk selection.
Research is needed to develop novel preventive and treatment strategies.
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Affiliation(s)
- L A Daalderop
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - B V Wieland
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - K Tomsin
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - L Reyes
- Department of Oral Biology, University of Florida, Gainesville, FL, USA.,Department of Pathobiological Sciences, University of Wisconsin, Madison, WI, USA
| | - B W Kramer
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - S F Vanterpool
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - J V Been
- Department of Paediatrics, Maastricht University Medical Centre, Maastricht, Netherlands.,Division of Neonatology, Department of Paediatrics, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, Netherlands.,Department of Obstetrics and Gynaecology, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, Netherlands
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Bascuas T, Moreno M, Mónaco A, Reyes L, Paolino A, Oliver P, Kramer MG, Engler H, Pacheco JP, Grille S, Chabalgoity JA. A novel non-Hodgkin lymphoma murine model closer to the standard clinical scenario. J Transl Med 2016; 14:323. [PMID: 27876058 PMCID: PMC5118904 DOI: 10.1186/s12967-016-1073-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/04/2016] [Indexed: 11/15/2022] Open
Abstract
Background Non-Hodgkin lymphomas (NHL) are the most frequent hemato-oncological malignancies. Despite recent major advances in treatment, a substantial proportion of patients relapses highlighting the need for new therapeutic modalities. Promissory results obtained in pre-clinical studies are usually not translated when moving into clinical trials. Pre-clinical studies are mainly conducted in animals with high tumor burden; instead patients undergo chemotherapy as first line of treatment and most likely are under remission when immunotherapies are applied. Thus, an animal model that more closely resembles patients’ conditions would be a valuable tool. Methods BALB/c mice were injected subcutaneously with A20 lymphoma cells and after tumor development different doses of chemotherapy were assessed to find optimal conditions for minimal residual disease (MRD) establishment. Tumor growth and survival, as well as drugs side effects, were all evaluated. Complete lymphoma remission was monitored in vivo using positron emission tomography (PET), and the results were correlated with histology. Immunological status was assessed by splenocytes proliferation assays in NHL-complete remission mice and by analyzing tumor cell infiltrates and chemokines/cytokines gene expression in the tumor microenvironment of animals with residual lymphoma. Results Two cycles of CHOP chemotherapy at days 25 and 35 post-tumor implantation induced complete remission for around 20 days. PET showed to be a suitable follow-up technique for MRD condition with 85.7 and 75% of sensibility and specificity respectively. Proliferative responses upon mitogen stimulation were similar in animals that received chemotherapy and wild type mice. Tumors from animals with residual lymphoma showed higher numbers of CD4+ and CD8+ and similar numbers of NK, neutrophils and Tregs infiltrating cells as compared with non-treated animals. Gene expression of several cytokines as well as an array of chemokines associated with migration of activated T cells to tumor sites was upregulated in the tumor microenvironment of animals that received chemotherapy treatment. Conclusions We established a NHL-B pre-clinical model using standard chemotherapy to achieve MRD in immunocompetent animals. The MRD condition is maintained for approximately 20 days providing a therapeutic window of time where new immunotherapies can be tested in conditions closer to the clinics.
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Affiliation(s)
- Thais Bascuas
- Departamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - María Moreno
- Departamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - Amy Mónaco
- Departamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - Laura Reyes
- Área de Investigación y Desarrollo, Departamento Biomédico, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - Andrea Paolino
- Área de Investigación y Desarrollo, Departamento Biomédico, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - Patricia Oliver
- Área de Investigación y Desarrollo, Departamento Biomédico, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - María G Kramer
- Departamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - Henry Engler
- Área de Investigación y Desarrollo, Departamento Biomédico, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - José P Pacheco
- Área de Patología Funcional y Morfológica, Departamento de Patología, Facultad de Veterinaria, UdelaR, Montevideo, Uruguay
| | - Sofía Grille
- Cátedra de Hematología, Hospital de Clínicas, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - José A Chabalgoity
- Departamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, UdelaR, Montevideo, Uruguay.
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Ureña I, Arias F, Castro M, León E, Masís M, Reyes L. Development of a methodology to quantify bromacil in hair using an animal model. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.215] [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: 11/16/2022]
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Jimenez J, Salinero M, Pope V, Reyes L, Khanal C, Matos M, Stone E. Impact of Education Alone vs. Education and Medical Intervention vs. Standard Treatment in Re-Hospitalization for Heart Failure. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.777] [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: 11/15/2022] Open
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Reyes L, Exner D, Kavanagh K, Hillier K, Yuen B, Cardiac Device Clinic Staff. IMPACT OF CENTRALIZED REMOTE MONITORING ON THE EFFICIENCY OF CARDIAC DEVICE PATIENT CARE. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.711] [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: 10/22/2022] Open
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Shah A, Reyes L, Morton J, Davidge S. Effect of Resveratrol on Cardiovascular and Metabolic Function in Adult Male and Female Offspring Born Intrauterine Growth Restricted. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.799.10] [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: 11/11/2022]
Affiliation(s)
- Amin Shah
- Departments of Obstetrics & Gynecology & Physiology University of Alberta Edmonton AlbertaCanada
- Women and Children's Health Research InstituteEdmontonAlbertaCanada
| | - Laura Reyes
- Departments of Obstetrics & Gynecology & Physiology University of Alberta Edmonton AlbertaCanada
- Women and Children's Health Research InstituteEdmontonAlbertaCanada
| | - Jude Morton
- Departments of Obstetrics & Gynecology & Physiology University of Alberta Edmonton AlbertaCanada
- Women and Children's Health Research InstituteEdmontonAlbertaCanada
| | - Sandra Davidge
- Departments of Obstetrics & Gynecology & Physiology University of Alberta Edmonton AlbertaCanada
- Women and Children's Health Research InstituteEdmontonAlbertaCanada
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Romeu B, Lastre M, Reyes L, González E, Borrero Y, Lescaille D, Pérez R, Nuñez D, Pérez O. Nasal immunization of mice with AFCo1 or AFPL1 plus capsular polysaccharide Vi from Salmonella typhi induces cellular response and memory B and T cell responses. Vaccine 2014; 32:6971-6978. [PMID: 25454865 DOI: 10.1016/j.vaccine.2014.10.037] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 09/17/2014] [Accepted: 10/17/2014] [Indexed: 11/25/2022]
Abstract
The response to infection against Salmonella involves both B and T cell mediated immunity. An effective immunization can activate an adequate immune response capable to control the primary infection and protect against a secondary infection. Mucosal vaccination, by inducing local pathogen-specific immune responses, has the potential to counter mucosally transmitted pathogens at the portal of entry, thereby increasing the efficacy of vaccines. The aim of this work was to explore the efficacy of AFCo1 or AFPL1, as mucosal adjuvants to stimulate cell immunity and memory responses against Vi polysaccharide antigen of Salmonella typhi (PsVi). Mice immunized with 3 intranasal doses exhibited high levels of PsVi-specific IgG (p<0.05), IgG2a and IgG2c subclasses. Also, an amplified recall response after a booster immunization with a plain polysaccharide vaccine was induced. Avidities index were higher in mice immunized with adjuvanted formulations at different chaotropic concentrations. Furthermore, IL-12 and IFN-γ levels in nasally vaccinated mice with both adjuvants were induced. Moreover, priming with 3 doses followed by booster immunization with VaxTyVi(®) resulted in high levels of anti-Vi specific IgG, IgG subclasses and antibody avidity. Long lived plasma cells in bone marrow, memory B cells and long-term memory T cells after booster dose were induced. The combined formulation of Vi polysaccharide with mucosal adjuvants provides an improved immunogenicity, in particular with regard to cellular responses and long lasting cells responses.
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Affiliation(s)
- Belkis Romeu
- Immunology Department, Finlay Institute, Havana, Cuba.
| | - Miriam Lastre
- Immunology Department, Finlay Institute, Havana, Cuba
| | - Laura Reyes
- Immunology Department, Finlay Institute, Havana, Cuba
| | | | | | | | - Rocmira Pérez
- Immunology Department, Finlay Institute, Havana, Cuba
| | - Darzy Nuñez
- Animal Models Group, Direction of Research and Development, Finlay Institute, Havana, Cuba
| | - Oliver Pérez
- Immunology Department, Finlay Institute, Havana, Cuba
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Reyes L, Fernández L, Vilche M, Oliver P, Rey A, Terán M. Characterization of 99mTc-caspofungin as fungal infection agent and assessment of potential influence of pretreatment. Nucl Med Biol 2014. [DOI: 10.1016/j.nucmedbio.2014.05.093] [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: 11/29/2022]
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Fernández L, Reyes L, Terán M. Radiolabeling and biological evaluation of amphotericin using fac-[99mTc(I)(H2O)3(CO)3]+. Nucl Med Biol 2014. [DOI: 10.1016/j.nucmedbio.2014.05.054] [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: 11/17/2022]
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Court L, Fullen D, Tharp K, Palmer J, Ungchusri G, Reyes L, Tong T, Nguyen S, Phillips T, Balter P. SU-C-19A-05: Treatment Chairs for Modern Radiation Therapy Treatments. Med Phys 2014. [DOI: 10.1118/1.4889704] [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: 11/07/2022] Open
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Barcia JA, Reyes L, Arza R, Saceda J, Avecillas J, Yáñez R, García-Albea J, Ortiz T, López-Ibor MI, López-Ibor JJ. Deep Brain Stimulation for Obsessive-Compulsive Disorder: Is the Side Relevant. Stereotact Funct Neurosurg 2014; 92:31-6. [DOI: 10.1159/000353187] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 04/30/2013] [Indexed: 11/19/2022]
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Parra D, Dauti M, Harris J, Brownson R, Reyes L, Malta D, Quintero M, Pratt M. How does network structure relate to the likelihood of inter-organizational collaboration for promoting physical activity? Evidence from Brazil and Colombia. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Reyes L, Garcia R, Ruiz S, Dehghan M, López-Jaramillo P. Nutritional status among women with pre-eclampsia and healthy pregnant and non-pregnant women in a Latin American country. J Obstet Gynaecol Res 2012; 38:498-504. [PMID: 22353171 DOI: 10.1111/j.1447-0756.2011.01763.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
AIMS Pre-eclampsia (PE) is one of the leading causes of maternal and perinatal morbidity and mortality worldwide. It has been proposed that, among other risk factors, the nutritional status of women can lead to the endothelial dysfunction that characterizes this entity. The aim of the present study was to compare the nutritional status of women with PE with healthy pregnant and non-pregnant women. MATERIAL AND METHODS A multicenter case-control study was carried out. Between September 2006 and July 2009, 201 women with PE were compared with 201 pregnant, and 201 non-pregnant aged-matched women without cardiovascular or endocrine diseases. A clinical history and physical examination was performed. Fasting blood samples were drawn to measure serum glucose and lipid profile. The nutritional status of participants was assessed using a food frequency questionnaire. RESULTS The average age of women was 26.6 ± 7.2 years. Compared to healthy pregnant controls, women with PE had a higher body mass index, higher fasting blood glucose levels, higher triglycerides, and lower high-density lipoprotein cholesterol levels. Women with PE had a higher intake of carbohydrates, energy intake and cereal compared to healthy pregnant and non-pregnant controls. A conditional logistic regression demonstrated that carbohydrate and sodium intake are associated with PE development. CONCLUSIONS Diets of women with PE were characterized by higher energy and carbohydrate intake compared to normal pregnant and non-pregnant women. This suggests that higher carbohydrate and sodium intake increases the risk of PE among women in Colombia.
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Affiliation(s)
- Laura Reyes
- Fundación Cardiovascular de Colombia, UDES, Bucaramanga, Santander, Colombia
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Reyes L. NP010 A unit level toolkit to optimize heart failure care across different organizations. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.08.081] [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: 11/29/2022] Open
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Z'graggen BR, Tornic J, Müller-Edenborn B, Reyes L, Booy C, Beck-Schimmer B. Acute lung injury: apoptosis in effector and target cells of the upper and lower airway compartment. Clin Exp Immunol 2010; 161:324-31. [PMID: 20456415 DOI: 10.1111/j.1365-2249.2010.04175.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Apoptotic cell death has been considered an underlying mechanism in acute lung injury. To evaluate the evidence of this process, apoptosis rate was determined in effector cells (alveolar macrophages, neutrophils) and target cells (tracheobronchial and alveolar epithelial cells) of the respiratory compartment upon exposure to hypoxia and endotoxin stimulation in vitro. Cells were exposed to 5% oxygen or incubated with lipopolysaccharide (LPS) for 4, 8 and 24 h, and activity of caspase-3, -8 and -9 was determined. Caspase-3 of alveolar macrophages was increased at all three time-points upon LPS stimulation, while hypoxia did not affect apoptosis rate at early time-points. In neutrophils, apoptosis was decreased in an early phase of hypoxia at 4 h. However, enhanced expression of caspase-3 activity was seen at 8 and 24 h. In the presence of LPS a decreased apoptosis rate was observed at 8 h compared to controls, while it was increased at 24 h. Tracheobronchial as well as alveolar epithelial cells experienced an enhanced caspase-3 activity upon LPS stimulation with no change of apoptosis rate under hypoxia. While increased apoptosis rate is triggered through an intrinsic and extrinsic pathway in alveolar macrophages, intrinsic signalling is activated in tracheobronchial epithelial cells. The exact pathway pattern in neutrophils and alveolar epithelial cells could not be determined. These data clearly demonstrate that upon injury each cell type experiences its own apoptosis pattern. Further experiments need to be performed to determine the functional role of these apoptotic processes in acute lung injury.
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Affiliation(s)
- B Roth Z'graggen
- Institute of Physiology and Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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Cortes J, Arvelo W, lopez B, Reyes L, Gordillo B, Parashar U, Lindblade K. The epidemiology of rotavirus disease among children <5 years of age - Santa Rosa, Guatemala, 2007-2009. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.1876] [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: 11/30/2022] Open
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Otero-Pinto J, Latorre F, Rocha M, Reyes L. 739: Identification of 8 and 12 hour proteinuria as a reliable method to diagnose preeclampsia. Am J Obstet Gynecol 2009. [DOI: 10.1016/j.ajog.2009.10.756] [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: 10/20/2022]
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Barcia JA, González-Hidalgo M, López-Ibor MI, Ortiz T, Reyes L, López-Ibor JJ. [Deep brain stimulation in mood disorders: is it as easy as it seems?]. Actas Esp Psiquiatr 2009; 37:297-298. [PMID: 20310086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Steurer M, Schläpfer M, Steurer M, Z'graggen BR, Booy C, Reyes L, Spahn DR, Beck-Schimmer B. The volatile anaesthetic sevoflurane attenuates lipopolysaccharide-induced injury in alveolar macrophages. Clin Exp Immunol 2008; 155:224-30. [PMID: 19032551 DOI: 10.1111/j.1365-2249.2008.03807.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI) is a well-defined inflammation whereby alveolar macrophages play a crucial role as effector cells. As shown previously in numerous experimental approaches, volatile anaesthetics might reduce the degree of injury in pre- or post-conditioning set-ups. Therefore, we were interested to evaluate the effect of the application of the volatile anaesthetic sevoflurane on alveolar macrophages regarding the expression of inflammatory mediators upon lipopolysaccharide (LPS) stimulation in vitro. Alveolar macrophages were stimulated with LPS. Two hours later, cells were exposed additionally to air (control) or to sevoflurane-containing air for 4, 6, 8, 12 or 24 h. Tumour necrosis factor (TNF)-alpha, cytokine-induced neutrophil chemoattractant-1 (CINC-1), macrophage-inflammatory protein-2 (MIP-2) and monocyte chemoattractant protein-1 (MCP-1) proteins were determined and chemotaxis assays were performed. To evaluate possible cellular signalling pathways phosphorylation of the kinases extracellular-regulated kinase (ERK) and Akt was assessed. In the early phase of sevoflurane post-conditioning expression of TNF-alpha, CINC-1, MIP-2 and MCP-1 was attenuated, leading to a diminished chemotaxis reaction for neutrophils. Phosphorylation of ERK seems to be a possible cellular mechanism in the sevoflurane-induced protection in vitro. Pharmacological post-conditioning of alveolar macrophages with sevoflurane immunmodulates the inflammatory response upon stimulation with endotoxin. This might be a possible option for a therapeutical approach in ALI.
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Affiliation(s)
- M Steurer
- Institute of Physiology, Zurich Center of Integrative Human Physiology, Zurich, Switzerland
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Yue T, Roth Z'graggen B, Blumenthal S, Neff SB, Reyes L, Booy C, Steurer M, Spahn DR, Neff TA, Schmid ER, Beck-Schimmer B. Postconditioning with a volatile anaesthetic in alveolar epithelial cells in vitro. Eur Respir J 2008; 31:118-25. [PMID: 17898018 DOI: 10.1183/09031936.00046307] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [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: 11/05/2022]
Abstract
Acute lung injury is a common complication in critically ill patients. The present study examined possible immunomodulating effects of the volatile anaesthetic sevoflurane on lipopolysaccharide (LPS)-stimulated alveolar epithelial cells (AEC) in vitro. Sevoflurane was applied after the onset of injury, simulating a "postconditioning" scenario. Rat AEC were stimulated with LPS for 2 h, followed by a 4-h co-exposure to a CO(2)/air mixture with sevoflurane 2.2 volume %; control cells were exposed to the CO(2)/air mixture only. Cytokine-induced neutrophil chemoattractant-1, monocyte chemoattractant protein-1, intercellular adhesion molecule-1, as well as the potential protective mediators inducible nitric oxide synthase (iNOS)2 and heat shock protein (HSP)-32, were analysed. Additionally, functional assays (chemotaxis, adherence and cytotoxicity assay) were performed. A significant reduction of inflammatory mediators in LPS-stimulated, sevoflurane-exposed AEC was found, leading to reduced chemotaxis, neutrophil adherence and neutrophil-induced AEC killing. While iNOS2 was increased in the sevoflurane group, blocking experiments with iNOS2 inhibitor did not affect sevoflurane-induced decrease of inflammatory mediators and AEC killing. Interestingly, sevoflurane treatment also resulted in an enhanced expression of HSP-32. The data presented in the current study provide strong evidence that anaesthetic postconditioning with sevoflurane mediates cytoprotection in the respiratory compartment in an in vitro model of acute lung injury.
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Affiliation(s)
- T Yue
- Institute of Anesthesiology, University of Zurich, Zurich, Switzerland
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Meyer S, Z'graggen BR, Blumenthal S, Borgeat A, Ganter MT, Reyes L, Booy C, Neff TA, Spahn DR, Beck-Schimmer B. Hypoxia attenuates effector-target cell interaction in the airway and pulmonary vascular compartment. Clin Exp Immunol 2007; 150:358-67. [PMID: 17892511 PMCID: PMC2219348 DOI: 10.1111/j.1365-2249.2007.03495.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Leucocyte infiltration is known to play an important role in hypoxia-induced tissue damage. However, little information is available about hypoxia and interaction of effector (neutrophils) with target cells (alveolar epithelial cells, AEC; rat pulmonary artery endothelial cells, RPAEC). The goal of this study was to elucidate hypoxia-induced changes of effector-target cell interaction. AEC and RPAEC were exposed to 5% oxygen for 2-6 h. Intercellular adhesion molecule-1 (ICAM-1) expression was determined and cell adherence as well as cytotoxicity assays were performed. Nitric oxide and heat shock protein 70 (HSP70) production was assessed in target cells. Under hypoxic conditions enhanced ICAM-1 production was found in both cell types. This resulted in an increase of adherent neutrophils to AEC and RPAEC. The death rate of hypoxia-exposed target cells decreased significantly in comparison to control cells. Nitric oxide (NO) concentration was enhanced, as was production of HSP70 in AEC. Blocking NO production in target cells resulted in increased cytotoxicity in AEC and RPAEC. This study shows for the first time that target cells are more resistant to effector cells under hypoxia, suggesting hypoxia-induced cell protection. An underlying mechanism for this phenomenon might be the protective effect of increased levels of NO in target cells.
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Affiliation(s)
- S Meyer
- Institute of Anaesthesiology, and Institute of Physiology and Center for Intergrative Human Physiology, University of Zurich, Zurich, Switzerland
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Brown M, Reyes L, von Deneen K, Belanger M, Progulske-Fox A. 1141681087 An animal model for maternal and fetal infection with Porphyromonas gingivalis. Am J Reprod Immunol 2006. [DOI: 10.1111/j.1600-0897.2006.00383_46.x] [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: 11/28/2022] Open
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Moreno-Rodriguez RA, Krug EL, Reyes L, Villavicencio L, Mjaatvedt CH, Markwald RR. Bidirectional fusion of the heart-forming fields in the developing chick embryo. Dev Dyn 2006; 235:191-202. [PMID: 16252277 PMCID: PMC1855217 DOI: 10.1002/dvdy.20601] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [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: 11/12/2022] Open
Abstract
It is generally thought that the early pre-tubular chick heart is formed by fusion of the anterior or cephalic limits of the paired cardiogenic fields. However, this study shows that the heart fields initially fuse at their midpoint to form a transitory "butterfly"-shaped, cardiogenic structure. Fusion then progresses bi-directionally along the longitudinal axis in both cranial and caudal directions. Using in vivo labeling, we demonstrate that cells along the ventral fusion line are highly motile, crossing future primitive segments. We found that mesoderm cells migrated cephalically from the unfused tips of the anterior/cephalic wings into the head mesenchyme in the region that has been called the secondary heart field. Perturbing the anterior/cranial fusion results in formation of a bi-conal heart. A theoretical role of the ventral fusion line acting as a "heart organizer" and its role in cardia bifida is discussed.
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Affiliation(s)
- R A Moreno-Rodriguez
- Department of Cell Biology and Anatomy, Medical University of South Carolina, Charleston, South Carolina 29425, USA.
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García-Hernández E, González-Sánchez JL, Andrade-Manzano A, Contreras ML, Padilla S, Guzmán CC, Jiménez R, Reyes L, Morosoli G, Verde ML, Rosales R. Regression of papilloma high-grade lesions (CIN 2 and CIN 3) is stimulated by therapeutic vaccination with MVA E2 recombinant vaccine. Cancer Gene Ther 2006; 13:592-7. [PMID: 16456551 DOI: 10.1038/sj.cgt.7700937] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human papillomavirus (HPV) is the etiologic agent for cervical cancer. In Mexico, a women dies every 2 h, and since 1990 the statistics have shown that the numbers of deaths are increasing. We conducted a phase II clinical trial to evaluate the potential use of the MVA E2 recombinant vaccinia virus in treating high-grade lesions (CIN 2 and CIN 3) associated with oncogenic papillomavirus. Fifty-four female patients with high degree lesions were treated either with an MVA E2 therapeutic vaccine or with conization. Thirty-four women received the therapeutic vaccine, at a total of 10(7) virus particles per dose injected directly into the uterus once every week over a 6-week period. Twenty control patients were treated with conization. By colposcopy, 19 patients out of 34 showed no lesion, in three patients the lesions were reduced by 85-90%, in eight other lesions had reduced by 60%, and in four more patients, they were reduced by 25%. Histological analysis showed total elimination of high-grade lesions in 20 out of 34 patients after treatment with MVA E2. Eleven patients had a 50% reduction in lesion size. In two other patients, the lesion was reduced to CIN 2 and in one more patient the lesion was reduced to low grade (CIN 1). All patients developed antibodies against the MVA E2 vaccine, and generated a specific cytotoxic response against papilloma-transformed cells. DNA viral load was significantly reduced in MVA E2-treated patients. Conization eliminated the lesions in 80% of the patients, but patients did not develop cytotoxic activity specific against cancer cells and did not eliminate the papillomavirus. In addition, three patients treated with conization had recurrence of lesions 1 year later. These results show that therapeutic vaccination with MVA E2 proved to be very effective in stimulating the immune system against papillomavirus, and in generating regression of high-grade lesion.
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Affiliation(s)
- E García-Hernández
- Hospital de Gineco Obstetricia, Instituto Mexicano del Seguro Social (IMSS), and FES Zaragoza, National Autonomous University of México, Mexico City, Mexico
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García-Borboroglu P, Boersma PD, Ruoppolo V, Reyes L, Rebstock GA, Griot K, Rodrigues Heredia S, Adornes AC, da Silva RP. Chronic oil pollution harms Magellanic penguins in the Southwest Atlantic. Mar Pollut Bull 2006; 52:193-8. [PMID: 16364372 DOI: 10.1016/j.marpolbul.2005.11.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2005] [Revised: 11/04/2005] [Accepted: 11/07/2005] [Indexed: 05/05/2023]
Abstract
Petroleum pollution is a problem for seabirds along the Southwest Atlantic coast. Twenty-five groups from Salvador, Brazil (12 degrees 58'S) to San Antonio Oeste, Argentina (40 degrees 43'S) survey or rehabilitate sick or oiled seabirds. Four groups, one each in Brazil and Uruguay, and two in Argentina, kept counts of birds found alive and in need of rehabilitation. An average of 63.7% of the seabirds found were Magellanic penguins (Spheniscus magellanicus), with 3869 reported since 1987. Mainly adult penguins were found in Argentina (1605 of 2102 penguins of known age class) and Uruguay (158 of 197). Juveniles were most common in Brazil (234 of 325). Oil fouling was the most frequent cause of injury or sickness. The number of oiled penguins reported in their wintering range has greatly increased since the early 1990s and is strongly correlated with petroleum exports from Argentina. Our results show that chronic petroleum pollution is a problem for wildlife from Southern Brazil through Northern Argentina, and regulations and enforcement are failing to protect living resources.
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Affiliation(s)
- Pablo García-Borboroglu
- Centro Nacional Patagónico (CONICET), Boulevard Brown 3600, (9120) Puerto Madryn, Chubut, Argentina
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