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Rodrigues MV, Garcia JMB, Pacheco KD, Borges FT, Isaac DLC, Avila M. Pseudophakic macular edema in nondiabetic and diabetic patients without diabetic retinopathy treated with intravitreal dexamethasone implant. Int J Retina Vitreous 2023; 9:56. [PMID: 37723594 PMCID: PMC10506302 DOI: 10.1186/s40942-023-00489-2] [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: 06/15/2023] [Accepted: 08/14/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND The purpose of this study was to compare the impact of intravitreal dexamethasone (DEX) implant during a 12-month period in nondiabetic and diabetic patients without diabetic retinopathy (DR) as a treatment for refractory pseudophakic cystoid macular edema (PCME) following prior treatment with topical nepafenac 0.1% and prednisolone 1%. METHODS Forty-two consecutive medical records of patients diagnosed with PCME after uneventful cataract surgery were included. The outcomes measured included best corrected visual acuity (BCVA) and central foveal thickness (CFT). Linear regression analysis was statistically applied. RESULTS Following topical treatment, nondiabetic and diabetic subjects presented a mean ± SD gain of - 0.11 ± 0.11 and - 0.18 ± 0.11 BCVA logMAR and a CFT reduction of - 43.42 ± 53.66 µm and - 58.76 ± 36.28 µm, respectively. The mean BCVA gain at month 12 subsequent to DEX implantation was - 0.35 ± 0.17 in nondiabetic (p < 0.001) and - 0.55 ± 0.26 in diabetic patients (p < 0.001), with CFT reductions of - 195.71 ± 93.23 µm (p < 0.001) and - 260.81 ± 198.69 µm (p < 0.001), respectively. Patients who responded with better VA after topical treatment presented better visual outcomes at month 12 following DEX implantation (r2 = 0.46; rho = - 0.71, p < 0.01). CONCLUSION Nondiabetic and diabetic patients without DR demonstrated similar results after DEX implant after combined topical therapy, suggesting that selected diabetic patients may have a response comparable to that of nondiabetic patients with PCME.
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Affiliation(s)
- Magna Vanessa Rodrigues
- Centro Brasileiro da Visao, Brasilia, DF, Brazil.
- Federal University of Goias, Centro de Referencia em Oftalmologia (CEROF), Goiania, GO, Brazil.
| | | | | | | | | | - Marcos Avila
- Centro Brasileiro da Visao, Brasilia, DF, Brazil
- Federal University of Goias, Centro de Referencia em Oftalmologia (CEROF), Goiania, GO, Brazil
- Centro Brasileiro de Cirurgia de Olhos, Goiania, GO, Brazil
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Scussel A, Marcondes-Braga F, Espinoza C, De Marchi D, Avila M, Duque A, de Paulo A, Mangini S, de Campos I, Seguro L, Gaiotto F, Bacal F. The Role of High-Sensitive Troponin in Identifying Patients with Cardiac Allograft Rejection. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1223] [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: 04/05/2023] Open
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Aronowitz D, Bougioukas L, Newman J, Avila M, Kon Z, Saikus C. Mechanical Circulatory Support and Heart Transplantation for Acute on Chronic Heart Failure in Untreated Hypothyroidism. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.630] [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: 04/05/2023] Open
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Stawiarski K, Stevens G, Kon Z, Saikus C, Avila M. Complete Heart Block as a Presentation of Antibody Medication Rejection Early Post Heart-Lung Transplant. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1231] [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: 04/05/2023] Open
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Ashraf-Uz-Zaman M, Ji G, Tidwell D, Yin L, Thakolwiboon S, Pan J, Junell R, Griffin Z, Shahi S, Barthels D, Sajib MS, Trippier PC, Mikelis CM, Das H, Avila M, Neugebauer V, German NA. Correction to "Evaluation of Urea-Based Inhibitors of the Dopamine Transporter Using the Experimental Autoimmune Encephalomyelitis Model of Multiple Sclerosis". ACS Chem Neurosci 2022; 13:3138. [PMID: 36264675 DOI: 10.1021/acschemneuro.2c00459] [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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Tielke J, Maas M, Castillo M, Rezwan K, Avila M. Statistical analysis of thermal conductivity experimentally measured in water-based nanofluids. Proc Math Phys Eng Sci 2021. [DOI: 10.1098/rspa.2021.0222] [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: 11/12/2022] Open
Abstract
Nanofluids are suspensions of nanoparticles in a base heat-transfer liquid. They have been widely investigated to boost heat transfer since they were proposed in the 1990s. We present a statistical correlation analysis of experimentally measured thermal conductivity of water-based nanofluids available in the literature. The influences of particle concentration, particle size, temperature and surfactants are investigated. For specific particle materials (alumina, titania, copper oxide, copper, silica and silicon carbide), separate analyses are performed. The conductivity increases with the concentration in qualitative agreement with Maxwell’s theory of homogeneous media. The conductivity also increases with the temperature (in addition to the improvement due to the increased conductivity of water). Surprisingly, only silica nanofluids exhibit a statistically significant effect of the particle size, whereby smaller particles lead to faster heat transfer. Overall, the large scatter in the experimental data prevents a compelling, unambiguous assessment of these effects. Taken together, the results of our analysis suggest that more comprehensive experimental characterizations of nanofluids are necessary to estimate their practical potential.
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Affiliation(s)
- J. Tielke
- University of Bremen, Center of Applied Space Technology and Microgravity (ZARM), Am Fallturm, 2, 28359 Bremen, Germany
| | - M. Maas
- University of Bremen, Advanced Ceramics, Am Biologischen Garten, 2, 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, 28359 Bremen, Germany
| | - M. Castillo
- University of Bremen, Center of Applied Space Technology and Microgravity (ZARM), Am Fallturm, 2, 28359 Bremen, Germany
| | - K. Rezwan
- University of Bremen, Advanced Ceramics, Am Biologischen Garten, 2, 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, 28359 Bremen, Germany
| | - M. Avila
- University of Bremen, Center of Applied Space Technology and Microgravity (ZARM), Am Fallturm, 2, 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, 28359 Bremen, Germany
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Lando L, Silva HM, Cardoso LL, Isaac DLC, Teixeira KISS, Avila M. Retinal ischemia following mandible tumor treatment with steroid injection. Arq Bras Oftalmol 2021; 83:543-546. [PMID: 33470284 DOI: 10.5935/0004-2749.20200099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 02/03/2020] [Indexed: 11/20/2022] Open
Abstract
Central giant cell granuloma is a rare osseous tumor affecting young patients with anatomical and functional compromise of the maxilla and mandible. Steroid injection therapy constitutes a less invasive treatment modality for disease control in selected cases. Retinal ischemia is a reported complication of multiple medical procedures, including dental interventions, and may lead to loss of vision with poor prognosis. We report a case of retinal arteriolar ischemic disease following central giant cell granuloma management with local injected corticosteroids.
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Affiliation(s)
- Leonardo Lando
- Departamento de Oftalmologia, Universidade Federal de Goiás, GO, Brazil
| | - Hugo Mendes Silva
- Departamento de Oftalmologia, Universidade Federal de Goiás, GO, Brazil
| | | | | | | | - Marcos Avila
- Departamento de Oftalmologia, Universidade Federal de Goiás, GO, Brazil
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Avila M, Fellman B, Crumley S, Hudgens C, Tetzlaff M, Broaddus R. CD3+ tumor-associated lymphocytes as a novel prognostic biomarker in endometrial carcinoma. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.06.072] [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: 11/24/2022]
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Avila M, Fellman B, Broaddus R. Mismatch repair deficiency predicts worse survival despite adjuvant treatment in stage I endometrial cancer: Opportunities for novel adjuvant therapy. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Avila M, Fellman B, Crumley S, Hudgens C, Tetzlaff M, Broaddus R. A quantification model of lymphocytic tumor infiltration in endometrial cancer. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Centeno C, Serra Mitja P, Avila M, Carcereny E, Muñoz-Mármol AM, Moran T, Castellà E, Sanz-Santos J, García-Olivè I, Ramirez Serrano JL, Rosell Gratacos A, Andreo García F. Molecular analysis in cytological samples obtained by endobronchial or oesophageal ultrasound guided needle aspiration in non-small cell lung cancer. Pulmonology 2020; 28:28-33. [PMID: 32507497 DOI: 10.1016/j.pulmoe.2020.05.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/28/2020] [Accepted: 05/03/2020] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION Cytological samples obtained by endobronchial ultrasound (EBUS) are capital for diagnosis, staging and molecular profile in non-small cell lung carcinoma (NSCLC). OBJECTIVE To assess the success rate of complete, partial and individual of molecular analysis in samples obtained by EBUS-guided transbronchial needle aspiration (TBNA) and/or by oesophageal ultrasound-guided fine needle aspiration with an echobronchoscope (EUS-B-FNA) in patients with NSCLC. METHODS Prospective study including 90 patients with non-squamous NSCLC, or non-smoking squamous. Cytological samples were classified into two groups. Group 1: PEN membrane slide and/or cell blocks for the determination of mutations of EGFR, KRAS, ERBB2 and BRAF. Group 2: silane coated slides or cell blocks for rearrangements of ALK, ROS1 and MET amplification. RESULTS The success rate was 78.6% for 4 molecular alterations (EGFR, KRAS, ALK and ROS1), and 44% for 7 determinations. The individual success rate for EGFR was 97%, KRAS 96.3%, ALK 85%, ROS1 82.3%, ERBB2 71.4%, BRAF 67.7% and MET 81.1%. There were no significant differences (p=0.489) in the number of molecular analyses (1-3 vs. 4) in group 1, depending on the types of samples (cell block vs. PEN membrane slide vs. cell block and PEN membrane slide). CONCLUSIONS In patients with NSCLC, the cytological material obtained by ultrasound-guided needle aspiration is sufficient for individual and partial molecular analysis in the vast majority of cases. Membrane slides such as cell blocks are valid samples for molecular analysis.
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Affiliation(s)
- C Centeno
- Bronchoscopy Unit, Pulmonology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain; Department of Medicine, Universitat Autonoma de Barcelona, Spain.
| | - P Serra Mitja
- Bronchoscopy Unit, Pulmonology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain; Department of Medicine, Universitat Autonoma de Barcelona, Spain
| | - M Avila
- Pathology Department, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | - E Carcereny
- Oncology Department, Badalona Applied Research Group in Oncology (B-ARGO), Institut Catala d' Oncologia, Barcelona, Spain
| | - A M Muñoz-Mármol
- Pathology Department, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | - T Moran
- Oncology Department, Badalona Applied Research Group in Oncology (B-ARGO), Institut Catala d' Oncologia, Barcelona, Spain
| | - E Castellà
- Pathology Department, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | - J Sanz-Santos
- Bronchoscopy Unit, Pulmonology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain
| | - I García-Olivè
- Bronchoscopy Unit, Pulmonology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain
| | - J L Ramirez Serrano
- Oncology Department, Badalona Applied Research Group in Oncology (B-ARGO), Institut Catala d' Oncologia, Barcelona, Spain
| | - A Rosell Gratacos
- Bronchoscopy Unit, Pulmonology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain; Department of Medicine, Universitat Autonoma de Barcelona, Spain; CIBERES, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
| | - F Andreo García
- Bronchoscopy Unit, Pulmonology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain; Department of Medicine, Universitat Autonoma de Barcelona, Spain; CIBERES, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
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Iturriaga V, Bornhardt T, Avila M, Astete N, Cresp N. Quality of sleep, daytime sleepiness and used of stimulating substances in patients with orofacial musculoskeletal pain. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.126] [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: 10/25/2022]
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Avila M, Alvarado M, Axtell A, Goff J, Funston J, Lentz S. Universal immunohistochemistry testing in endometrial cancer tumors maximizes Lynch Syndrome identification among affected individuals. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.03.187] [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: 10/26/2022]
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17
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Salyer C, Lentz S, Dontsi M, Armstrong M, Butt A, Hoodfar E, Alvarado M, Landers E, Avila M, Nguyen N, Powell CB. Comparison of effectiveness of two strategies to identify Lynch Syndrome in women with endometrial cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.03.186] [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: 10/26/2022]
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Salyer C, Lentz S, Dontsi M, Armstrong M, Hoodfar E, Alvarado M, Landers E, Avila M, Nguyen N, Powell B. Lynch syndrome in women with endometrial cancer: Comparison of universal and age-based strategies in a California healthcare system. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.479] [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: 10/26/2022]
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Avila M, Crumley S, Fellman B, Broaddus R. Identification of a subset of microsatellite-stable endometrial carcinoma with high PD-L1 expression and tumor-associated lymphocytes: A potential strategy for immune checkpoint blockade. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.575] [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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20
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Avila M, Fellman B, Broaddus R. MSI-high due to MLH1 methylation is associated with worse recurrence-free and overall survival in endometrioid-type endometrial cancer: Implications for adjuvant therapy. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.552] [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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Serra P, Sanz-Santos J, Castellà E, Cirauqui B, Andreo F, Llatjós M, Avila M, Margelí M, Serrano L, Centeno C, Quiroga V, Torky M, Ruiz-Manzano J. Identification of oestrogen, progesterone receptor and human epidermal growth factor receptor 2 expression in mediastinal metastases of breast cancer obtained by endobronchial ultrasound-guided transbronchial needle aspiration. Cytopathology 2017; 29:35-40. [PMID: 29119620 DOI: 10.1111/cyt.12486] [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] [Accepted: 08/30/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND In breast cancer patients, the expression statuses of oestrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) are crucial in the choice of treatment. Receptor expression in metastatic lesions can differ from the primary tumour. The aim of our study was to analyse the utility of endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) to obtain samples allowing the identification of ER, PR and HER2 expression in patients with mediastinal metastases of breast cancer. PATIENTS AND METHODS The clinical files of all patients with a final diagnosis of breast cancer mediastinal metastases diagnosed by EBUS-TBNA in our institution were retrospectively analysed. The ability of EBUS-TBNA to obtain samples that allowed hormone receptor and HER2 expression analysis was calculated. RESULTS Twenty-four patients were included. ER, PR and HER2 assessments could be performed in 22, 20 and 22 patients, respectively. In 20 of the 24 patients it was possible to investigate all three types of receptor expression. In the remaining four cases, where ER, PR or HER2 expression tests could not be performed, it was due to a lack of tissue. In cases with adequate results for EBUS-TBNA and the primary tumour agreement was greater for ER (16/19) and HER2 (12/14) than PR (8/17). Based on receptor status, there was a change in the choice of treatment for five patients. CONCLUSION In patients with breast cancer mediastinal metastases, ER, PR and HER2 expression can be assessed in samples obtained by EBUS-TBNA whenever a sufficient tissue sample is collected.
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Affiliation(s)
- P Serra
- Department of Pulmonology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain.,Department of Medicine, Facultat de Medicina, Universitat Autònoma de Barcelona, Bellaterra (Barcelona), Spain
| | - J Sanz-Santos
- Department of Pulmonology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain.,Department of Pulmonology, Hospital Mútua de Terrassa, Terrassa (Barcelona), Spain
| | - E Castellà
- Department of Pathology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - B Cirauqui
- Catalan Institute of Oncology, Badalona (Barcelona), Spain
| | - F Andreo
- Department of Pulmonology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - M Llatjós
- Department of Pathology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - M Avila
- Department of Pathology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - M Margelí
- Catalan Institute of Oncology, Badalona (Barcelona), Spain
| | - L Serrano
- Department of Pathology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - C Centeno
- Department of Pulmonology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - V Quiroga
- Catalan Institute of Oncology, Badalona (Barcelona), Spain
| | - M Torky
- Department of Pulmonology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
| | - J Ruiz-Manzano
- Department of Pulmonology, Hospital Germans Trias i Pujol, Badalona (Barcelona), Spain
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de Barros Garcia JMB, Isaac DLC, Avila M. Diabetic retinopathy and OCT angiography: clinical findings and future perspectives. Int J Retina Vitreous 2017; 3:14. [PMID: 28293432 PMCID: PMC5346852 DOI: 10.1186/s40942-017-0062-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 02/22/2017] [Indexed: 01/21/2023] Open
Abstract
In diabetic retinopathy (DR), macular involvement can present as either macular edema or ischemia. Fluorescein angiography remains the gold standard in the evaluation of retinal vascular perfusion and diagnosis of macular ischemia. However, it is a costly, time-consuming technique, it requires venipuncture, and reports of anaphylaxis and death related to fluorescein injections have been documented, despite their rarity. Optical coherence tomography (OCT) provides a fast and non-invasive method to assess retinal structures at a microscopic level. OCT angiography permits the noninvasive study of retinal and choroid circulation via motion contrast imaging. Split-spectrum amplitude decorrelation angiography combined with OCT angiography has furthered the understanding of retinal and choroidal vascular diseases, allowing the evaluation of retinal microvasculature and identification of subsequent disorders, including DR. Previous studies using OCT angiography have demonstrated that it may demonstrate DR findings such as microaneurysms, arteriolar wall staining, retinal neovascularization, and intraretinal microvascular abnormalities. The purpose of this article is to describe and discuss different concepts regarding OCT angiography, as well as its role in the diagnosis of DR and maculopathy.
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Affiliation(s)
| | - David Leonardo Cruvinel Isaac
- Federal University of Goias, Av. Primeira Avenida, S/N, Rua 234, 38, Apto 1011, Setor Leste Universitario, Goiania, GO CEP 74605-020 Brazil
| | - Marcos Avila
- Federal University of Goias, Av. Primeira Avenida, S/N, Rua 234, 38, Apto 1011, Setor Leste Universitario, Goiania, GO CEP 74605-020 Brazil
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Garcia JMBDB, Isaac DLC, Sardeiro T, Aquino É, Avila M. Benign familial fleck retina: multimodal imaging including optical coherence tomography angiography. Arq Bras Oftalmol 2017; 80:321-323. [DOI: 10.5935/0004-2749.20170078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 06/13/2017] [Indexed: 11/20/2022] Open
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Abstract
Although there are enough ophthalmologists for the Brazilian population, they are not evenly distributed throughout the country. Tele-ophthalmology may therefore be a useful tool. We have examined the feasibility of ophthalmology triage, performed by a general practitioner (GP) with remote support from an ophthalmologist. Forty patients with a variety of external and internal eye disorders were examined by the GP and also reassessed by an ophthalmologist, face to face, and then remotely by another ophthalmologist. There was agreement in 95% of the diagnoses between face-to-face and distant evaluation. The use of a digital camera and slit-lamp allowed greater accuracy of telediagnosis than the use of a digital camera alone. The GP would have referred 36 patients to an ophthalmologist, while both the local and the remote ophthalmologist saw the need for referral in 31 cases, i.e. assessment by tele-ophthalmology resulted in a 14% decrease in referrals. GP triage therefore appears to be feasible after appropriate training.
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Avila M, Lentz S, Axtell A. Does Pre-Operative Vaginal Metronidazole Decrease the Risk of Pelvic Infections following Robotic Radical Hysterectomy? Gynecol Oncol 2016. [DOI: 10.1016/j.ygyno.2016.08.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Affiliation(s)
- F. Ceccherelli
- Istituto di Anestesiologia e Rianimazione, Università di Padova
| | - F. Ambrosio
- Istituto di Anestesiologia e Rianimazione, Università di Padova
| | - M. Avila
- Istituto di Anestesiologia e Rianimazione, Università di Padova
| | - G. Duse
- Istituto di Anestesiologia e Rianimazione, Università di Padova
| | - A. Munari
- Istituto di Anestesiologia e Rianimazione, Università di Padova
| | - G.P. Giron
- Istituto di Anestesiologia e Rianimazione, Università di Padova
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Narberhaus B, Avila M, Orriols J, Saura J. Unilateral ptosis as the initial sign of multiple myeloma. Neurología (English Edition) 2016. [DOI: 10.1016/j.nrleng.2014.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Thevenon J, Duplomb L, Phadke S, Eguether T, Saunier A, Avila M, Carmignac V, Bruel AL, St-Onge J, Duffourd Y, Pazour GJ, Franco B, Attie-Bitach T, Masurel-Paulet A, Rivière JB, Cormier-Daire V, Philippe C, Faivre L, Thauvin-Robinet C. Autosomal recessive IFT57 hypomorphic mutation cause ciliary transport defect in unclassified oral-facial-digital syndrome with short stature and brachymesophalangia. Clin Genet 2016; 90:509-517. [PMID: 27060890 DOI: 10.1111/cge.12785] [Citation(s) in RCA: 13] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/31/2016] [Accepted: 04/01/2016] [Indexed: 11/30/2022]
Abstract
The 13 subtypes of oral-facial-digital syndrome (OFDS) belong to the heterogeneous group of ciliopathies. Disease-causing genes encode for centrosomal proteins, components of the transition zone or proteins implicated in ciliary signaling. A unique consanguineous family presenting with an unclassified OFDS with skeletal dysplasia and brachymesophalangia was explored. Homozygosity mapping and exome sequencing led to the identification of a homozygous mutation in IFT57, which encodes a protein implicated in ciliary transport. The mutation caused splicing anomalies with reduced expression of the wild-type transcript and protein. Both anterograde ciliary transport and sonic hedgehog signaling were significantly decreased in subjects' fibroblasts compared with controls. Sanger sequencing of IFT57 in 13 OFDS subjects and 12 subjects with Ellis-Van Creveld syndrome was negative. This report identifies the implication of IFT57 in human pathology and highlights the first description of a ciliary transport defect in OFDS, extending the genetic heterogeneity of this subgroup of ciliopathies.
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Affiliation(s)
- J Thevenon
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France.,Centre de Référence maladies rares "Anomalies du Développement et syndrome malformatifs" de l'Est et Centre de Génétique, Hôpital d'Enfants, CHU, Dijon, France
| | - L Duplomb
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France
| | - S Phadke
- Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - T Eguether
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - A Saunier
- Laboratoire de Génétique Médicale, CHU - Hopitaux de Brabois, Vandoeuvre les Nancy cedex, France
| | - M Avila
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France
| | - V Carmignac
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France
| | - A-L Bruel
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France
| | - J St-Onge
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France.,Laboratoire de Génétique Moléculaire, PTB, CHU Dijon, Dijon, France
| | - Y Duffourd
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France
| | - G J Pazour
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - B Franco
- Telethon Institute of Genetics and Medicine, Naples, Italy.,Medical Genetics, Department of Medical Translational Sciences, University of Napoli Federico II, Naples, Italy.,Department of Medical Translational Sciences, Division of Pediatrics, Federico II University of Naples, Naples, Italy
| | - T Attie-Bitach
- Service de Génétique, Hôpital Necker-Enfants Malades, APHP, Institut Imagine, INSERM UMR1163, University Sorbonne-Paris-Cité, Paris, France
| | - A Masurel-Paulet
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Centre de Référence maladies rares "Anomalies du Développement et syndrome malformatifs" de l'Est et Centre de Génétique, Hôpital d'Enfants, CHU, Dijon, France
| | - J-B Rivière
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France.,Laboratoire de Génétique Moléculaire, PTB, CHU Dijon, Dijon, France
| | - V Cormier-Daire
- Service de Génétique, Hôpital Necker-Enfants Malades, APHP, Institut Imagine, INSERM UMR1163, University Sorbonne-Paris-Cité, Paris, France
| | - C Philippe
- Laboratoire de Génétique Médicale, CHU - Hopitaux de Brabois, Vandoeuvre les Nancy cedex, France
| | - L Faivre
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France.,Centre de Référence maladies rares "Anomalies du Développement et syndrome malformatifs" de l'Est et Centre de Génétique, Hôpital d'Enfants, CHU, Dijon, France
| | - C Thauvin-Robinet
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France.,Equipe EA4271 GAD, Université de Bourgogne, Dijon, France.,Centre de Référence maladies rares "Anomalies du Développement et syndrome malformatifs" de l'Est et Centre de Génétique, Hôpital d'Enfants, CHU, Dijon, France
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Domènech B, Romero V, Vázquez MI, Avila M, Benavente J, Muñoz M, Macanás J. Chemical and electrochemical characterization of Nafion containing silver nanoparticles in a stripe-like distribution. RSC Adv 2016. [DOI: 10.1039/c5ra22838g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Study of the effect of Ag-NPs stripes in Nafion: evaluation of chemical, electrochemical and mechanical properties.
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Affiliation(s)
- B. Domènech
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Campus UAB s/n
- Bellaterra 08193
- Spain
| | - V. Romero
- Universidad de Málaga
- Departamento de Física Aplicada I
- Facultad de Ciencias
- Campus de Teatinos
- Málaga 29071
| | - M. I. Vázquez
- Universidad de Málaga
- Departamento de Física Aplicada I
- Facultad de Ciencias
- Campus de Teatinos
- Málaga 29071
| | - M. Avila
- ALBA Synchrotron Light Source
- Barcelona
- Spain
| | - J. Benavente
- Universidad de Málaga
- Departamento de Física Aplicada I
- Facultad de Ciencias
- Campus de Teatinos
- Málaga 29071
| | - M. Muñoz
- Universitat Autònoma de Barcelona
- Departament de Química
- Facultat de Ciències
- Campus UAB s/n
- Bellaterra 08193
| | - J. Macanás
- Universitat Politècnica de Catalunya
- Departament d'Enginyeria Química
- Escola d'Enginyeria de Terrassa
- Terrassa 08222
- Spain
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30
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Avila M, Dyment DA, Sagen JV, St-Onge J, Moog U, Chung BHY, Mo S, Mansour S, Albanese A, Garcia S, Martin DO, Lopez AA, Claudi T, König R, White SM, Sawyer SL, Bernstein JA, Slattery L, Jobling RK, Yoon G, Curry CJ, Merrer ML, Luyer BL, Héron D, Mathieu-Dramard M, Bitoun P, Odent S, Amiel J, Kuentz P, Thevenon J, Laville M, Reznik Y, Fagour C, Nunes ML, Delesalle D, Manouvrier S, Lascols O, Huet F, Binquet C, Faivre L, Rivière JB, Vigouroux C, Njølstad PR, Innes AM, Thauvin-Robinet C. Clinical reappraisal of SHORT syndrome with PIK3R1 mutations: toward recommendation for molecular testing and management. Clin Genet 2015; 89:501-506. [PMID: 26497935 DOI: 10.1111/cge.12688] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [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: 08/03/2015] [Revised: 10/10/2015] [Accepted: 10/16/2015] [Indexed: 12/01/2022]
Abstract
SHORT syndrome has historically been defined by its acronym: short stature (S), hyperextensibility of joints and/or inguinal hernia (H), ocular depression (O), Rieger abnormality (R) and teething delay (T). More recently several research groups have identified PIK3R1 mutations as responsible for SHORT syndrome. Knowledge of the molecular etiology of SHORT syndrome has permitted a reassessment of the clinical phenotype. The detailed phenotypes of 32 individuals with SHORT syndrome and PIK3R1 mutation, including eight newly ascertained individuals, were studied to fully define the syndrome and the indications for PIK3R1 testing. The major features described in the SHORT acronym were not universally seen and only half (52%) had four or more of the classic features. The commonly observed clinical features of SHORT syndrome seen in the cohort included intrauterine growth restriction (IUGR) <10th percentile, postnatal growth restriction, lipoatrophy and the characteristic facial gestalt. Anterior chamber defects and insulin resistance or diabetes were also observed but were not as prevalent. The less specific, or minor features of SHORT syndrome include teething delay, thin wrinkled skin, speech delay, sensorineural deafness, hyperextensibility of joints and inguinal hernia. Given the high risk of diabetes mellitus, regular monitoring of glucose metabolism is warranted. An echocardiogram, ophthalmological and hearing assessments are also recommended.
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Affiliation(s)
- M Avila
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Service de Pédiatrie 1, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - D A Dyment
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - J V Sagen
- Hormone Laboratory, Haukeland University Hospital, Bergen, Norway.,KJ Jebsen Center for Diabetes Research, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - J St-Onge
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,CHU Dijon, Laboratoire de Génétique Moléculaire, Dijon, France
| | - U Moog
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - S Mo
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - S Mansour
- SW Thames Regional Genetics Service, St. George's Hospital Medical School, London, SW17 0RE, UK
| | - A Albanese
- Paediatric Endocrine Unit, St George's Hospital, London, UK
| | - S Garcia
- Institute of Medical and Molecular Genetics (INGEMM), La Paz University Hospital, Madrid, Spain.,Instituto de Salud Carlos III, Unit 753, Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - D O Martin
- Department of Ophthalmology, Hospital Central de la Cruz Roja San Jose y Santa Adela, Madrid, Spain
| | - A A Lopez
- Puerta de Hierro, University Hospital, Madrid, Spain
| | - T Claudi
- Department of Medicine, Bodø, Norway
| | - R König
- Department of Human Genetics, University of Frankfurt, Frankfurt, Germany
| | - S M White
- Victorian Clinical genetics Services, Murdoch Childrens Research institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - S L Sawyer
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - J A Bernstein
- Division of Medical Genetics, Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - L Slattery
- Division of Medical Genetics, Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - R K Jobling
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - G Yoon
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - C J Curry
- Genetic Medicine/, University of California, San Francisco, CA, USA
| | - M L Merrer
- Département de Génétique, Hôpital Necker Enfants Malades, Paris, France
| | - B L Luyer
- Service de Pédiatrie, CH Le Havre, Le Havre, France
| | - D Héron
- Département de Génétique et Centre de Référence "Déficiences intellectuelles de causes rares", Paris, France
| | | | - P Bitoun
- Service de Pédiatrie, Bondy, France
| | - S Odent
- Service de Génétique clinique, Rennes, France.,UMR CNRS 6290 IGDR, Universitė Rennes, Rennes, France
| | - J Amiel
- Département de Génétique, Hôpital Necker Enfants Malades, Paris, France
| | - P Kuentz
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France
| | - J Thevenon
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| | - M Laville
- Département d'Endocrinologie, Diabétologie et Nutrition, Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France.,Institut National de la Santé et de la Recherche Médicale Unité 1060, Centre Européen pour la nutrition et la Santé, Centre de Recherche en Nutrition Humaine Rhône-Alpes, Université Claude Bernard Lyon, Pierre-Bénite, France
| | - Y Reznik
- Service d'Endocrinologie, Centre Hospitalier Universitaire Côte-de-Nacre, Caen, France
| | - C Fagour
- Département d'Endocrinologie, Hôpital Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - M-L Nunes
- Département d'Endocrinologie, Hôpital Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - D Delesalle
- Service de pédiatrie, CH de Valencienne, Valencienne, France
| | - S Manouvrier
- Centre de Référence CLAD NdF - Service de génétique clinique Guy Fontaine, CHRU de Lille - Hôpital Jeanne de Flandre, Lille, France
| | - O Lascols
- INSERM, UMR_S938, Centre de Recherche Saint-Antoine, Paris, France.,UPMC Univ Paris 06, Paris, France.,ICAN, Institute of Cardiometabolism And Nutrition, Groupe Hospitalier Universitaire La Pitié-Salpêtrière, Paris, France.,AP-HP, Hôpital Saint-Antoine, Laboratoire Commun de Biologie et Génétique Moléculaires, Paris, France
| | - F Huet
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Service de Pédiatrie 1, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - C Binquet
- Centre d'Investigation Clinique-Epidémiologique Clinique/essais cliniques du CHU de Dijon, Dijon, France
| | - L Faivre
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| | - J-B Rivière
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,CHU Dijon, Laboratoire de Génétique Moléculaire, Dijon, France
| | - C Vigouroux
- INSERM, UMR_S938, Centre de Recherche Saint-Antoine, Paris, France.,UPMC Univ Paris 06, Paris, France.,ICAN, Institute of Cardiometabolism And Nutrition, Groupe Hospitalier Universitaire La Pitié-Salpêtrière, Paris, France.,AP-HP, Hôpital Saint-Antoine, Laboratoire Commun de Biologie et Génétique Moléculaires, Paris, France
| | - P R Njølstad
- Department of Pediatrics, Haukeland, University Hospital, Bergen, Norway
| | - A M Innes
- Department of Medical Genetics, University of Calgary, Calgary, Canada.,Alberta Children's Hospital Research Institute for Child and Maternal Health, University of Calgary, Calgary, Canada
| | - C Thauvin-Robinet
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
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Abud M, Baranov P, Hicks C, Patel S, Lieppman B, Regatieri C, Sinden J, Isaac D, Avila M, Young M. The Effect of Transient Local Anti-inflammatory Treatment on the Survival of Pig Retinal Progenitor Cell Allotransplants. Transl Vis Sci Technol 2015; 4:6. [PMID: 26425402 PMCID: PMC4585327 DOI: 10.1167/tvst.4.5.6] [Citation(s) in RCA: 7] [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: 08/04/2014] [Accepted: 07/27/2015] [Indexed: 12/16/2022] Open
Abstract
PURPOSE The development of photoreceptor replacement therapy for retinal degenerative disorders requires the identification of the optimal cell source and immunosuppressive regimen in a large animal model. Allotransplants are not acutely rejected in swine subretinal space, although it is not known if survival can be improved with immunosuppression. Here we investigated the survival and integration of expanded pig retinal progenitor cells (pRPCs) in normal recipients with and without transient anti-inflammatory suppression. METHODS pRPCs were derived from the neural retina of E60 GFP transgenic pigs, expanded for six passages, characterized, and transplanted into the subretinal space of 12 pigs. Six recipients received a single intravitreal injection of rapamycin and dexamethasone. RESULTS pRPCs expressed the photoreceptor development genes Sox2, Pax6, Lhx2, Crx, Nrl, and Recoverin in vitro. Transplanted cells were identified in 9 out of 12 recipients 4 weeks after the injection. pRPCs integrated primarily into the photoreceptor inner segment layer and outer nuclear layer with single cells present in the inner nuclear layer. Donor cells remained recoverin-positive and acquired rhodopsin. We did not observe any signs of graft proliferation. The immunosuppression did not affect the survival or distribution of grafts. No macrophage infiltration or loss of retinal structure was observed in either group. CONCLUSIONS Local immunosuppression with rapamycin and dexamethasone does not improve the outcome of pRPC allotransplantation into the subretinal space. TRANSLATIONAL RELEVANCE Survival and integration of pRPC together with the lack of graft proliferation suggests that allogeneic RPC transplantation without transient immunosuppression is a favorable approach for photoreceptor cell replacement.
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Affiliation(s)
- Murilo Abud
- Schepens Eye Research Institute, Massachusetts Eye and Ear, an affiliate of Harvard Medical School, Boston, MA, USA ; Federal University of Goias, Goiania, Brazil
| | - Petr Baranov
- Schepens Eye Research Institute, Massachusetts Eye and Ear, an affiliate of Harvard Medical School, Boston, MA, USA
| | | | | | - Burke Lieppman
- Schepens Eye Research Institute, Massachusetts Eye and Ear, an affiliate of Harvard Medical School, Boston, MA, USA
| | | | | | - David Isaac
- Federal University of Goias, Goiania, Brazil
| | | | - Michael Young
- Schepens Eye Research Institute, Massachusetts Eye and Ear, an affiliate of Harvard Medical School, Boston, MA, USA
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Torrente D, Cabezas R, Avila M, Sanchez Y, Morales L, Ashraf GM, Barreto GE, Gonzalez J, Aliev G. Mechanisms of PDGFRalpha promiscuity and PDGFRbeta specificity in association with PDGFB. Front Biosci (Elite Ed) 2015; 7:434-46. [PMID: 25961423 DOI: 10.2741/e741] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Platelet-derived growth factor receptor alpha (PDGFRalpha) interacts with PDGFs A, B, C and AB, while PDGFRbeta binds to PDGFs B and D, thus suggesting that PDGFRalpha is more promiscuous than PDGFRbeta. The structural analysis of PDGFRalpha-PDGFA and PDGFRalpha-PDGFB complexes and a molecular explanation for the promiscuity of PDGFRalpha and the specificity of PDGFRbeta remain unclear. In the present study, we modeled the three extracellular domains of PDGFRalpha using a previous crystallographic structure of PDGFRbeta as a template. Additionally, we analyzed the interacting residues of PDGFRalpha-PDGFA and PDGFRalpha-PDGFB complexes using docking simulations. The validation of the resulting complexes was evaluated by molecular dynamics simulations. Structural analysis revealed that changes of non-aromatic amino acids in PDGFRalpha to aromatic amino acids in PDGFRbeta (I139F, P267F and N204Y) may be involved in the promiscuity of PDGFRalpha. Indeed, substitution of amino acids with few probabilities of rotamer changes in PDGFRbeta (M133A, N163E and N179S) and energy stability due to the formation of hydrogen bond in PDGFRbeta could explain the specificity of PDGFRbeta. These results may be used as an input for a better and more specific drug and peptide design targeting diseases related with the malfunction of PDGFs and PDGFRalpha such as cancer and atherosclerosis.
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Affiliation(s)
| | | | | | | | | | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | | | - Janneth Gonzalez
- Departamento de Nutricion y Bioquimica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogota D.C., Colombia. Carrera 7ª # 43-82, Carlos Ortiz Bldg, S. J.; Lab. 107/108,
| | - Gjumrackh Aliev
- GALLY International Biomedical Research Consulting LLC., 7733 Louis Pasteur Drive, #330, San Antonio, TX, USA 78229, AND School of Health Science and Healthcare Administration, University of Atlanta, E. Johns Crossing, #175, Johns Creek, GA, USA 30097
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La Cognata M, Spitaleri C, Trippella O, Kiss G, Rogachev G, Mukhamedzhanov A, Avila M, Guardo G, Koshchiy E, Kuchera A, Lamia L, Puglia S, Romano S, Santiago D, Spartà R. Measurement of sub threshold resonance contributions to fusion reactions: the case of the 13C( α, n) 16O astrophysical neutron source. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158600023] [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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34
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Ayala LG, Abreu M, Avila M, Bergamini BC, Neto AC, Zin WA, Neto AG, Carvalho AR. 0548. Effects of sedation and muscle paralysis on inflammation during mechanical ventilation. Intensive Care Med Exp 2014. [PMCID: PMC4798140 DOI: 10.1186/2197-425x-2-s1-p32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Velasco F, Avila M, Concha L, Avendaño A, Garcia G. Changements métaboliques induits par la stimulation électrique des fibres prélemniscales dans le traitement de la maladie de Parkinson. Neurochirurgie 2014. [DOI: 10.1016/j.neuchi.2014.10.052] [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: 11/24/2022]
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36
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Cabezas R, Avila M, Gonzalez J, El-Bachá RS, Báez E, García-Segura LM, Jurado Coronel JC, Capani F, Cardona-Gomez GP, Barreto GE. Astrocytic modulation of blood brain barrier: perspectives on Parkinson's disease. Front Cell Neurosci 2014; 8:211. [PMID: 25136294 PMCID: PMC4120694 DOI: 10.3389/fncel.2014.00211] [Citation(s) in RCA: 266] [Impact Index Per Article: 26.6] [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: 05/29/2014] [Accepted: 07/14/2014] [Indexed: 12/21/2022] Open
Abstract
The blood–brain barrier (BBB) is a tightly regulated interface in the Central Nervous System (CNS) that regulates the exchange of molecules in and out from the brain thus maintaining the CNS homeostasis. It is mainly composed of endothelial cells (ECs), pericytes and astrocytes that create a neurovascular unit (NVU) with the adjacent neurons. Astrocytes are essential for the formation and maintenance of the BBB by providing secreted factors that lead to the adequate association between the cells of the BBB and the formation of strong tight junctions. Under neurological disorders, such as chronic cerebral ischemia, brain trauma, Epilepsy, Alzheimer and Parkinson’s Diseases, a disruption of the BBB takes place, involving a lost in the permeability of the barrier and phenotypical changes in both the ECs and astrocytes. In this aspect, it has been established that the process of reactive gliosis is a common feature of astrocytes during BBB disruption, which has a detrimental effect on the barrier function and a subsequent damage in neuronal survival. In this review we discuss the implications of astrocyte functions in the protection of the BBB, and in the development of Parkinson’s disease (PD) and related disorders. Additionally, we highlight the current and future strategies in astrocyte protection aimed at the development of restorative therapies for the BBB in pathological conditions.
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Affiliation(s)
- Ricardo Cabezas
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | - Marcos Avila
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | - Janneth Gonzalez
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | | | - Eliana Báez
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | | | - Juan Camilo Jurado Coronel
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
| | - Francisco Capani
- Laboratorio de Citoarquitectura y Plasticidad Neuronal, Facultad de Medicina, Instituto de Investigaciones cardiológicas Prof. Dr. Alberto C. Taquini (ININCA), UBA-CONICET, Buenos Aires Argentina
| | - Gloria Patricia Cardona-Gomez
- Cellular and Molecular Neurobiology Area, Group of Neuroscience of Antioquia, Faculty of Medicine, SIU, University of Antioquia UdeA Medellín, Colombia
| | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, D.C., Colombia
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Burks T, Avila M, Akhtar F, Göthelid M, Lansåker P, Toprak M, Muhammed M, Uheida A. Studies on the adsorption of chromium(VI) onto 3-Mercaptopropionic acid coated superparamagnetic iron oxide nanoparticles. J Colloid Interface Sci 2014; 425:36-43. [DOI: 10.1016/j.jcis.2014.03.025] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 03/02/2014] [Accepted: 03/10/2014] [Indexed: 11/16/2022]
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La Cognata M, Spitaleri C, Trippella O, Kiss G, Rogachev G, Mukhamedzhanov A, Avila M, Guardo G, Koshchiy E, Kuchera A, Lamia L, Puglia S, Romano S, Santiago D, Spartà R. Measurement of the 13C( α, n) 16O reaction at astrophysical energies using the Trojan Horse Method. Focus on the -3 keV sub-threshold resonance. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146607010] [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: 11/14/2022] Open
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Serrano-Villar S, Moreno S, Fuentes-Ferrer M, Sánchez-Marcos C, Avila M, Sainz T, de Villar NGP, Fernández-Cruz A, Estrada V. The CD4:CD8 ratio is associated with markers of age-associated disease in virally suppressed HIV-infected patients with immunological recovery. HIV Med 2013; 15:40-9. [PMID: 24007533 DOI: 10.1111/hiv.12081] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2013] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Inversion of the CD4:CD8 ratio (< 1) has been identified as a hallmark of inmmunosenescence and an independent predictor of mortality in the general population. We aimed to assess the association between the CD4:CD8 ratio and markers of age-associated disease in treated HIV-infected patients with good immunovirological response. METHODS A cross-sectional analysis was conducted in 132 HIV-infected adults on antiretroviral therapy (ART), with plasma HIV RNA < 50 HIV-1 RNA copies/mL for at least 1 year, CD4 count > 350 cells/μL and age < 65 years. We analysed the associations between the CD4:CD8 ratio and subclinical atherosclerosis [assessed using carotid intima-media thickness (IMT)], arterial stiffness [assessed using the augmentation index (AIx)], the estimated glomerular filtration rate (eGFR), muscle wasting and sarcopenia [assessed using appendicular lean mass/height(2) (ALM) measured by dual-energy X-ray absorptiometry (DEXA)]. RESULTS CD4:CD8 ratio inversion was associated with higher IMT, lower eGFR and lower ALM (all values P < 0.05), but not with AIx. In multivariate analyses adjusted for age, sex, hypertriglyceridaemia, tobacco use and cumulative ART exposure, inversion of the CD4:CD8 ratio was independently associated with higher IMT [odds ratio (OR) 2.9; 95% confidence interval (CI) 1.2-7.1], arterial stiffness (OR 4.8; 95% CI 1.0-23.5) and lower eGFR (OR 5.2; 95% CI 1.0-64.4), but not sarcopenia (OR 0.7; 95% CI 0.2-2.7). These associations persisted when models were applied to subjects with nadir CD4 counts > 200 cells/μL and those with CD4 counts > 500 cells/μL. CONCLUSIONS The CD4:CD8 ratio in treated HIV-infected subjects with good immunovirological response is independently associated with markers of age-associated disease. Hence, it might be a clinically useful predictor of non-AIDS-defining conditions.
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Affiliation(s)
- S Serrano-Villar
- Infectious Diseases Department, University Hospital Ramón y Cajal, Madrid, Spain; Health Research Institute Ramón y Cajal (IRYCIS), Madrid, Spain
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Avila M, Hof B. Nature of laminar-turbulence intermittency in shear flows. Phys Rev E Stat Nonlin Soft Matter Phys 2013; 87:063012. [PMID: 23848777 DOI: 10.1103/physreve.87.063012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2012] [Revised: 04/20/2013] [Indexed: 06/02/2023]
Abstract
In pipe, channel, and boundary layer flows turbulence first occurs intermittently in space and time: at moderate Reynolds numbers domains of disordered turbulent motion are separated by quiescent laminar regions. Based on direct numerical simulations of pipe flow we argue here that the spatial intermittency has its origin in a nearest neighbor interaction between turbulent regions. We further show that in this regime turbulent flows are intrinsically intermittent with a well-defined equilibrium turbulent fraction but without ever assuming a steady pattern. This transition scenario is analogous to that found in simple models such as coupled map lattices. The scaling observed implies that laminar intermissions of the turbulent flow will persist to arbitrarily large Reynolds numbers.
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Affiliation(s)
- M Avila
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
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Avila M, Mellibovsky F, Roland N, Hof B. Streamwise-localized solutions at the onset of turbulence in pipe flow. Phys Rev Lett 2013; 110:224502. [PMID: 23767729 DOI: 10.1103/physrevlett.110.224502] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Indexed: 06/02/2023]
Abstract
Although the equations governing fluid flow are well known, there are no analytical expressions that describe the complexity of turbulent motion. A recent proposition is that in analogy to low dimensional chaotic systems, turbulence is organized around unstable solutions of the governing equations which provide the building blocks of the disordered dynamics. We report the discovery of periodic solutions which just like intermittent turbulence are spatially localized and show that turbulent transients arise from one such solution branch.
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Affiliation(s)
- M Avila
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany.
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De Guglielmo Z, Avila M, Veitía D, Fernández A, Venegas C, Correnti de Plata M. [HPV detection in the mouth and cervix of patients with histological diagnosis suggestive of genital infection]. An Sist Sanit Navar 2013; 35:445-54. [PMID: 23296225 DOI: 10.23938/assn.0100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This work evaluated HPV infection in the oral cavity (using oroscopy and exfoliative oral cytology) and its relation to genital infection in women with cytological diagnosis suggestive of HPV infection. The sample consisted of 60 patients who underwent oroscopy, cytology and viral determination in mouth and cervix by PCR using generic primers MY09/MY11 and MPCR. HPV DNA was detected in oral and genital mucosa in 48.33% and 73.3% of patients, respectively, yielding a concordance of 44.2% (k=0.44, moderate agreement). The most common viral types were low risk, especially type 6, found in 86.2% of oral samples and 65.9% of cervical specimens, alone or in combination with other types of low (11) or high oncogenic risk (16, 18, 33), with a concordance of 10.45% (k = 0.1, insignificant agreement). However, in relation to type 6, there was a concordance of 75.86% (k=0.7, high agreement). The cytology of the oral cavity had a sensitivity of 3.5% and a specificity of 93.6%. For oroscopy, sensitivity was 27.6% and specificity was 74.2%. The results indicate that HPV infection in the oral cavity of patients with genital infection could be frequent. The low concordance between HPV types suggests that HPV infection in the mouth and cervix has a different biological behavior.
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Affiliation(s)
- Z De Guglielmo
- Instituto de Oncología y Hematología, Ciudad Universitaria Los Chaguaramos, Caracas, Venezuela.
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La Cognata M, Spitaleri C, Trippella O, Kiss GG, Rogachev GV, Mukhamedzhanov AM, Avila M, Guardo GL, Koshchiy E, Kuchera A, Lamia L, Puglia SMR, Romano S, Santiago D, Spartà R. Measurement of the -3 keV resonance in the reaction 13C(α,n)16O of importance in the s-process. Phys Rev Lett 2012; 109:232701. [PMID: 23368189 DOI: 10.1103/physrevlett.109.232701] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/10/2012] [Indexed: 06/01/2023]
Abstract
The (13)C(α,n)(16)O reaction is the neutron source for the main component of the s-process, responsible for the production of most nuclei in the mass range 90</~A</~204. It is active inside the helium-burning shell in asymptotic giant branch stars, at temperatures </~10(8) K, corresponding to an energy interval where the (13)C(α,n)(16)O is effective from 140 to 230 keV. In this region, the astrophysical S(E)-factor is dominated by the -3 keV subthreshold resonance due to the 6.356 MeV level in (17)O, giving rise to a steep increase of the S(E)-factor. Notwithstanding that it plays a crucial role in astrophysics, no direct measurements exist inside the s-process energy window. The magnitude of its contribution is still controversial as extrapolations, e.g., through the R matrix and indirect techniques, such as the asymptotic normalization coefficient (ANC), yield inconsistent results. The discrepancy amounts to a factor of 3 or more right at astrophysical energies. Therefore, we have applied the Trojan horse method to the (13)C((6)Li,n(16)O)d quasifree reaction to achieve an experimental estimate of such contribution. For the first time, the ANC for the 6.356 MeV level has been deduced through the Trojan horse method as well as the n-partial width, allowing to attain an unprecedented accuracy in the (13)C(α,n)(16)O study. Though a larger ANC for the 6.356 MeV level is measured, our experimental S(E)-factor agrees with the most recent extrapolation in the literature in the 140-230 keV energy interval, the accuracy being greatly enhanced thanks to this innovative approach.
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Affiliation(s)
- M La Cognata
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, 95123 Catania, Italy.
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Limongi RM, Magacho L, Matayoshi S, Carneiro HM, Avila M. Computed tomographic dacryocystography in children undergoing balloon dacryoplasty. J AAPOS 2012; 16:464-7. [PMID: 23084386 DOI: 10.1016/j.jaapos.2012.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 06/20/2012] [Accepted: 07/03/2012] [Indexed: 11/30/2022]
Abstract
PURPOSE To ascertain whether the volume and circumference of the lacrimal sac and nasolacrimal duct as measured by contrast-enhanced computed tomographic dacryocystography (CT-DCG) before and after balloon dacryoplasty could be used to predict clinical success in children with congenital nasolacrimal obstruction. METHODS Nasolacrimal ducts of children aged 2 to 6 years with clinical signs of congenital nasolacrimal duct obstruction undergoing balloon dilation were imaged with contrast-enhanced CT-DCG before and 5 minutes after the procedure. The circumference of the most dilated portion of the lacrimal sac was measured on the axial plane. The volume of contrast within the nasolacrimal duct and sac was also measured before and after the procedure. Clinical success was defined as the disappearance of signs of epiphora. RESULTS A total of 18 nasolacrimal ducts of 13 children were included. The average circumference of the most dilated portion of the lacrimal sac was 1.30 ± 0.45 cm (range, 0.64-2.50 cm) before the procedure. The average contrast volume was 0.12 ± 0.08 cm(3) (range, 0.01-0.38 cm(3)) before and 0.07 ± 0.06 cm(3) (range, 0.01-0.20 cm(3)) after (P = 0.01). Data were analyzed using multivariate logistic regression with a backward variable input model; a decrease in contrast volume before and after dilation (P = 0.04) was associated with clinical success, whereas the larger size of the most dilated portion of the lacrimal sac (P = 0.01) was associated with clinical failure. CONCLUSIONS Contrast-enhanced CT-DCG provides useful information about nasolacrimal anatomy in children with congenital nasolacrimal duct obstruction. The decrease in contrast volume before and after balloon dilation was predictive of success; A larger size of the most dilated portion of the lacrimal sac was associated with clinical failure.
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Affiliation(s)
- Roberto M Limongi
- Ophthalmology Reference Center at the Hospital das Clínicas of the Federal University of Goiás, Goiás, Brazil.
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Abstract
Recent numerical studies suggest that in pipe and related shear flows, the region of phase space separating laminar from turbulent motion is organized by a chaotic attractor, called an edge state, which mediates the transition process. We here confirm the existence of the edge state in laboratory experiments. We observe that it governs the dynamics during the decay of turbulence underlining its potential relevance for turbulence control. In addition we unveil two unstable traveling wave solutions underlying the experimental flow fields. This observation corroborates earlier suggestions that unstable solutions organize turbulence and its stability border.
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Affiliation(s)
- A de Lozar
- Max Planck Institute for Dynamics and Self-Organization, 37073 Göttingen, Germany.
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Abstract
Turbulent transport of angular momentum is a necessary process to explain accretion in astrophysical disks. Although the hydrodynamic stability of disklike flows has been tested in experiments, results are contradictory and suggest either laminar or turbulent flow. Direct numerical simulations reported here show that currently investigated laboratory flows are hydrodynamically unstable and become turbulent at low Reynolds numbers. The underlying instabilities stem from the axial boundary conditions, affect the flow globally, and enhance angular-momentum transport.
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Affiliation(s)
- M Avila
- Max Planck Institute for Dynamics and Self-Organization (MPIDS), 37077 Göttingen, Germany.
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Isaac DLC, Abud MB, Frantz KA, Rassi AR, Avila M. Comparing intravitreal triamcinolone acetonide and bevacizumab injections for the treatment of diabetic macular oedema: a randomized double-blind study. Acta Ophthalmol 2012; 90:56-60. [PMID: 20015098 DOI: 10.1111/j.1755-3768.2009.01817.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE To compare the effect of a single intravitreal injection of triamcinolone acetonide and bevacizumab in reducing macular thickness, which was measured by optical coherence tomography (OCT) in patients with diabetic macular oedema (DMO). METHODS The patients received a single intravitreal injection of 1.25 mg bevacizumab in one randomly selected eye and 4.0 mg triamcinolone acetonide in the contralateral eye. Central foveal thickness measurement (CFT) with OCT was taken at the initial visit and at the 4-week, 12-week and 24-week visits. RESULTS Eleven patients (22 eyes) were enrolled and statistically analysed. CFT reduced in the eyes treated with triamcinolone and those treated with bevacizumab in weeks 4 and 12 (p < 0.05). At the 24-week follow-up, no significant difference was noted, relative to the initial visit. Comparing the two groups treated with different drugs, a statistically significant difference in CFT in weeks 4 and 12 was noted, with a more significant reduction in triamcinolone-treated eyes (p < 0.05). Regarding visual acuity (VA), patients treated with triamcinolone had improvement in VA at 4-week (p = 0.02) and 12-week follow-up (p = 0.01), while the group treated with bevacizumab had VA improvement at 4 -week follow-up (p = 0.02). Among the eyes treated with triamcinolone, intraocular pressure (IOP) measurement of more than 21 mmHg was found in three eyes (27.3%). CONCLUSIONS Intravitreal triamcinolone proved to be more efficient in reducing DMO, providing longer lasting visual improvement, relative to bevacizumab. Eyes treated with triamcinolone had the highest percentage increase in IOP. Further studies are needed to corroborate these findings.
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Abstract
The aim of this study is to show that the optimal order of Markov Model of cursive words can be rigorously stated in order to fit the structural properties of the observed data using Akaike information criterion. The method has been tested on French Postal check amounts up to order 4. An original structural representation of cursive words based on graphemes is used. The conditional probability to have a word model given an observed sequence of graphemes is computed independently of the length of the sequence. The recognition results obtained confirm the optimal order found using Akaike criterion.
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Affiliation(s)
- C. Olivier
- PSI-La3i, U.F.R. des Sciences, Université de Rouen, 76821 Mont Saint Aignan Cedex, France
| | - T. Paquet
- PSI-La3i, U.F.R. des Sciences, Université de Rouen, 76821 Mont Saint Aignan Cedex, France
| | - M. Avila
- PSI-La3i, U.F.R. des Sciences, Université de Rouen, 76821 Mont Saint Aignan Cedex, France
| | - Y. Lecourtier
- PSI-La3i, U.F.R. des Sciences, Université de Rouen, 76821 Mont Saint Aignan Cedex, France
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Avila M, Gigot N, Aral B, Callier P, Gautier E, Thevenon J, Pasquier L, Lopez E, Gueneau L, Duplomb L, Goldenberg A, Baumann C, Cormier V, Marlin S, Masurel-Paulet A, Huet F, Attié-Bitach T, Faivre L, Thauvin-Robinet C. GLI3 is rarely implicated in OFD syndromes with midline abnormalities. Hum Mutat 2011; 32:1332-3. [PMID: 21796731 DOI: 10.1002/humu.21570] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 07/03/2011] [Indexed: 11/10/2022]
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