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Teixeira SC, Saraiva E, Fonseca S, Sousa-Neves F. AZOOR with unilateral disc edema: An atypical case report. Arch Soc Esp Oftalmol (Engl Ed) 2023:S2173-5794(23)00086-5. [PMID: 37247666 DOI: 10.1016/j.oftale.2023.03.009] [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] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 03/23/2023] [Indexed: 05/31/2023]
Abstract
Acute zonal occult outer retinopathy (AZOOR) diagnosis is challenging and frequently delayed. Atypical findings were described, nevertheless optic disc edema has not been consistently reported. In this study we pretend to describe a challenging diagnosis of AZOOR. In our case, a 19-year-old female presented painless vision loss in her right eye for 2 weeks. Fundus examination revealed optic disc hyperaemic edema and the visual field (VF) an enlarged blind spot. Non-infectious optic neuritis was assumed and intravenous corticotherapy administered. Four months later, VA had improved, but a VF defect persisted. Funduscopic examination showed mild peripapillary atrophy and autofluorescence zonal hyperautofluorescence around optic disc. Optical coherence tomography demonstrated diffuse loss of outer retinal layers and electroretinogram weakened signal at the corresponding region. In conclusion, unilateral optic disc edema, generally not associated with AZOOR typical presentation, hamper an early diagnosis and expresses this case relevance.
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Affiliation(s)
- S C Teixeira
- Department of Ophthalmology, Centro Hospitalar Vila Nova de Gaia/Espinho Vila Nova de Gaia, Portugal.
| | - E Saraiva
- Department of Ophthalmology, Centro Hospitalar Vila Nova de Gaia/Espinho Vila Nova de Gaia, Portugal
| | - S Fonseca
- Department of Ophthalmology, Centro Hospitalar Vila Nova de Gaia/Espinho Vila Nova de Gaia, Portugal
| | - F Sousa-Neves
- Department of Ophthalmology, Centro Hospitalar Vila Nova de Gaia/Espinho Vila Nova de Gaia, Portugal
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Teixeira SC. COVID-19 and mass gatherings: emerging and future implications of the Brazilian carnival for public health. Public Health 2020; 187:62-64. [PMID: 32927289 PMCID: PMC7483076 DOI: 10.1016/j.puhe.2020.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 08/03/2020] [Indexed: 01/19/2023]
Affiliation(s)
- S C Teixeira
- Institute of Biomedical Science, Department of Immunology, Federal University of Uberlândia, Campus Umuarama, Av. Para, 1720, 38400239, Uberlândia, MG, Brazil.
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Teixeira SC, Borges BC, Oliveira VQ, Carregosa LS, Bastos LA, Santos IA, Jardim ACG, Melo FF, Freitas LM, Rodrigues VM, Lopes DS. Insights into the antiviral activity of phospholipases A 2 (PLA 2s) from snake venoms. Int J Biol Macromol 2020; 164:616-625. [PMID: 32698062 PMCID: PMC7368918 DOI: 10.1016/j.ijbiomac.2020.07.178] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 05/27/2020] [Revised: 07/08/2020] [Accepted: 07/14/2020] [Indexed: 12/18/2022]
Abstract
Viruses are associated with several human diseases that infect a large number of individuals, hence directly affecting global health and economy. Owing to the lack of efficient vaccines, antiviral therapy and emerging resistance strains, many viruses are considered as a potential threat to public health. Therefore, researches have been developed to identify new drug candidates for future treatments. Among them, antiviral research based on natural molecules is a promising approach. Phospholipases A2 (PLA2s) isolated from snake venom have shown significant antiviral activity against some viruses such as Dengue virus, Human Immunodeficiency virus, Hepatitis C virus and Yellow fever virus, and have emerged as an attractive alternative strategy for the development of novel antiviral therapy. Thus, this review provides an overview of remarkable findings involving PLA2s from snake venom that possess antiviral activity, and discusses the mechanisms of action mediated by PLA2s against different stages of virus replication cycle. Additionally, molecular docking simulations were performed by interacting between phospholipids from Dengue virus envelope and PLA2s from Bothrops asper snake venom. Studies on snake venom PLA2s highlight the potential use of these proteins for the development of broad-spectrum antiviral drugs.
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Affiliation(s)
- S C Teixeira
- Department of Immunology, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - B C Borges
- Department of Immunology, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - V Q Oliveira
- Multidisciplinary Institute of Health, Anísio Teixeira Campus, Federal University of Bahia, Vitória da Conquista, BA, Brazil
| | - L S Carregosa
- Multidisciplinary Institute of Health, Anísio Teixeira Campus, Federal University of Bahia, Vitória da Conquista, BA, Brazil
| | - L A Bastos
- Multidisciplinary Institute of Health, Anísio Teixeira Campus, Federal University of Bahia, Vitória da Conquista, BA, Brazil
| | - I A Santos
- Laboratory of Virology, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - A C G Jardim
- Laboratory of Virology, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - F F Melo
- Multidisciplinary Institute of Health, Anísio Teixeira Campus, Federal University of Bahia, Vitória da Conquista, BA, Brazil
| | - L M Freitas
- Multidisciplinary Institute of Health, Anísio Teixeira Campus, Federal University of Bahia, Vitória da Conquista, BA, Brazil
| | - V M Rodrigues
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - D S Lopes
- Multidisciplinary Institute of Health, Anísio Teixeira Campus, Federal University of Bahia, Vitória da Conquista, BA, Brazil; Institute of Health Sciences, Department of Bio-Function, Federal University of Bahia, Salvador, BA, Brazil.
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Teixeira SC, Koolen BB, Elkhuizen PHM, Vrancken Peeters MJTFD, Stokkel MPM, Rodenhuis S, van der Noort V, Rutgers EJT, Valdés Olmos RA. PET/CT with 18F-FDG predicts short-term outcome in stage II/III breast cancer patients upstaged to N2/3 nodal disease. Eur J Surg Oncol 2016; 43:625-635. [PMID: 27847287 DOI: 10.1016/j.ejso.2016.10.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 07/09/2016] [Revised: 09/28/2016] [Accepted: 10/07/2016] [Indexed: 11/19/2022]
Abstract
INTRODUCTION 18F-FDG PET/CT has high positive predictive value for the detection of avid lymph node metastases in breast cancer patients. We analysed the effect of upstaging lymph nodes by PET/CT on short-term outcome in stage II/III breast cancer patients. PATIENTS AND METHODS A total of 278 stage II/III primary breast cancer patients (mean age 48.9 years, range 19-75 years) were re-staged with 18F-FDG PET/CT before start of pre-operative systemic treatment (PST). Patients were divided in three groups based on risk for local recurrence: a low - (T2N0), intermediate - (T0-2N1 and T3N0) and a high-risk group (T0-3N2-3, T3N1 and T4). Within these groups we looked at local recurrence-free survival (LRFS), recurrence-free survival (RFS) and overall survival (OS) within the first 3 years of follow-up. RESULTS With a median follow-up (FU) of 50 months the RFS, LRFS and OS were 87%, 88% and 92% respectively for the whole group. PET/CT upstaged 43 patients from the low- and intermediate risk group to the high-risk group, based on detection of ≥4 avid axillary nodes or occult N2/3-disease. Patients upstaged with PET/CT had more events for all three analyses compared to the original risk groups, which resulted in a significantly worse RFS (69.8%; p = 0.03) a nearly significantly worse LRFS (p = 0.052) and no effect in OS (p = 0.433). DISCUSSION Additional PET/CT staging allows breast cancer patients to be treated according to the true stage, still stage II/III breast cancer patients upstaged to N2/3 by PET/CT have worse short-term outcome, despite adjustment of treatment, than patients staged high-risk with conventional imaging.
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Affiliation(s)
- S C Teixeira
- Departments of Nuclear Medicine, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands; Departments of Surgery, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - B B Koolen
- Departments of Nuclear Medicine, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands; Departments of Surgery, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - P H M Elkhuizen
- Departments of Radiotherapy, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - M-J T F D Vrancken Peeters
- Departments of Surgery, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - M P M Stokkel
- Departments of Nuclear Medicine, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - S Rodenhuis
- Departments of Clinical Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - V van der Noort
- Departments of Statistics, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - E J T Rutgers
- Departments of Surgery, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - R A Valdés Olmos
- Departments of Nuclear Medicine, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
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Lo Leggio L, Kalogiannis S, Eckert K, Teixeira SC, Bhat MK, Andrei C, Pickersgill RW, Larsen S. Substrate specificity and subsite mobility in T. aurantiacus xylanase 10A. FEBS Lett 2001; 509:303-8. [PMID: 11741607 DOI: 10.1016/s0014-5793(01)03177-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [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: 11/19/2022]
Abstract
The substrate specificity of Thermoascus aurantiacus xylanase 10A (TAX) has been investigated both biochemically and structurally. High resolution crystallographic analyses at 291 K and 100 K of TAX complexes with xylobiose show that the ligand is in its alpha anomeric conformation and provide a rationale for specificity on p-nitrophenyl glycosides at the -1 and -2 subsites. Trp 275, which is disordered in uncomplexed structures, is stabilised by its interaction with xylobiose. Two structural subsets in family 10 are identified, which differ by the presence or absence of a short helical stretch in the eighth betaalpha-loop of the TIM barrel, the loop bearing Trp 275. This structural difference is discussed in the context of Trp 275 mobility and xylanase function.
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Affiliation(s)
- L Lo Leggio
- Centre for Crystallographic Studies, Chemical Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
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Teixeira SC, de Alencar R, Teixeira GP. [Botulinum toxin the treatment of spasmodic torticollis: a meta-analysis]. Arq Neuropsiquiatr 1994; 52:269-72. [PMID: 7826261 DOI: 10.1590/s0004-282x1994000200022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The authors made a meta-analysis of the results of botulinum toxin injection for the treatment of spasmodic torticollis. They concluded that botulinum toxin is effective for the treatment of cervical dystonia.
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Affiliation(s)
- S C Teixeira
- Clínica Médica, Hospital Geral da Santa Casa da Misericórdia, Rio de Janeiro
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