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Faria A, Martinho D, Lemos J, Leão C, Naughton R. Daily Distribution Of Macronutrients In Portuguese Youth Soccer Players. Clin Nutr ESPEN 2023. [DOI: 10.1016/j.clnesp.2022.09.158] [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: 03/28/2023]
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Roseira J, Mão de Ferro S, Moleiro J, Currais P, Lemos J, Dionísio J, Ferreira S, Rosa I, Lage P, Szantho A, Duro da Costa J, Dias Pereira A. Utility of stent double palliation for esophageal cancer with airway involvement: the extremis of care. Dis Esophagus 2020; 33:5588491. [PMID: 31617893 DOI: 10.1093/dote/doz087] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 07/24/2019] [Accepted: 08/31/2019] [Indexed: 12/11/2022]
Abstract
Primary esophageal cancer (EC) frequently presents as a locally advanced disease with airway involvement. Placement of combined esophageal and airway stents has been reported in small series to be an effective palliation strategy. Our aims are to present the largest cohort of EC patients who underwent double stent palliation and to evaluate the safety and efficacy of this approach. Longitudinal cohort study of patients with primary EC undergoing two-stage esophageal and airway stent placement at an oncology referral institute (January 2000-January 2019). Assessments: baseline demographics and clinical variables; baseline and week 2 dysphagia, dyspnea and performance status (PS) scores; baseline and week 8 body mass index (BMI); overall survival. Statistics: paired t-test; Kaplan-Meier method. Seventy patients (89% men, mean age 60.20 ± 8.41) underwent double stenting. Esophageal stent was placed for esophageal stenosis and dysphagia (n = 41; placement of a second stent due to recurrence in nine cases) or esophagorespiratory fistulas (ERFs) (n = 29); airway stent was required for ERF sealing (n = 29 + 7 new ERFs after esophageal stent) and to ensure airway patency due to malignant stenosis (n = 29; placement of a second stent due to recurrence in 13 cases) or compression (n = 5). There were 13, endoscopically managed, major complications after esophageal stent [hemorrage (n = 1), migration (n = 5) and new fistulas (n = 7)]. As for airway stents, four major complications were recorded [hemorrage (n = 1) and three deaths due to respiratory infection and ultimately respiratory failure 3-7 days after the procedure]. Overall, patients showed significant improvement in dysphagia and dyspnea symptoms (3.21 vs. 1.31 e 15.56 vs. 10.87; P < 0.001). There was a PS improvement for 89.2% (n = 58) of the patients. BMI at week 8 was comparable to baseline records. Mean survival was 137.83 ± 24.14 days (95% CI: 90.51-185.15). Survival was longer for better PS (PS1, 249.95 days; PS2, 83.74 days; PS3, 22.43 days; PS4, 30.00 days). This is the largest comprehensive assessment of double stent palliation in advanced incurable EC. For both esophageal or airway stenosis and fistula, placement of combined esophageal and airway stents was a feasible, effective, fast-acting and safe modality for symptom palliation and body mass maintenance. Patient autonomy followed symptom improvement. Since it is impossible to provide treatment for cure in most of these cases, this endoscopic strategy, performed in differentiated units with the required technical capacity, may guarantee treatment for the relief of palliative EC.
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Affiliation(s)
- J Roseira
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal.,Gastroenterology Department, Centro Hospitalar Universitário do Algarve, Portimão, Portugal
| | - S Mão de Ferro
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - J Moleiro
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - P Currais
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - J Lemos
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - J Dionísio
- Pneumology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - S Ferreira
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - I Rosa
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - P Lage
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - A Szantho
- Pneumology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - J Duro da Costa
- Pneumology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
| | - A Dias Pereira
- Gastroenterology Department, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisboa, Portugal
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Ferreira L, Moniz AC, Carneiro AS, Miranda AS, Fangueiro C, Fernandes D, Silva I, Palhinhas I, Lemos J, Antunes J, Leal M, Sampaio N, Faria S. The impact of glycemic variability on length of stay and mortality in diabetic patients admitted with community-acquired pneumonia or chronic obstructive pulmonary disease. Diabetes Metab Syndr 2019; 13:149-153. [PMID: 30641688 DOI: 10.1016/j.dsx.2018.08.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 08/27/2018] [Indexed: 01/07/2023]
Abstract
AIM To investigate the influence of glycemic variability (GV) on length of stay and in-hospital mortality in non-critical diabetic patients. METHODS A observation retrospective study was performed. Diabetic patients admitted between January and June 2016 with the diagnosis of community-acquire pneumonia (CAP) and/or acute exacerbation of chronic obstructive pulmonary disease (COPD) were enrolled and glycemic control (persistent hyperglycemia, hypoglycemia, mean glucose level (MGL) and respective standard deviation (SD) and coefficient of variation (CV)) were evaluated. Primary outcomes were length of stay and in-hospital mortality. RESULTS Data from 242 patients were analyzed. Fifty-eight percent of the patients were male, with a median age of 77 years (min-max, 29-98). Patients had on average 2.1 glucose readings-day and the MGL was 193.3 mg/dl (min-max, 84.3-436.6). Hypoglycemia was documented in 13.4% of the patients and 55.4% had persistent hyperglycemia. The median length of hospital stay was 10 days (min-max, 1-66) and in-hospital mortality was 7.4%. We found a significant higher in-hospital mortality in older patients, with history of cancer and with nosocomial infections. We did not find any correlation between MGL, SD, CV, hypoglycemia or persist hyperglycemia and in-hospital mortality. A longer length of stay was observed in patients with heavy alcohol consumption and nosocomial infections. The length of stay was negatively correlated with the mean glucose level (r2-0.147; p < 0.05) and positively correlated with the coefficient of variation (p 0.162; p < 0.05). CONCLUSION This study confirmed the negative impact of the glycemic variability in the outcomes of diabetic patients admitted with CAP or acute exacerbation of COPD.
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Affiliation(s)
- L Ferreira
- Department of Endocrinology, Centro Hospitalar do Porto, Porto, Portugal.
| | - A C Moniz
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - A S Carneiro
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - A S Miranda
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - C Fangueiro
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - D Fernandes
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - I Silva
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - I Palhinhas
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - J Lemos
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - J Antunes
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - M Leal
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - N Sampaio
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - S Faria
- Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
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Lemos J, Pereira D, Almendra L, Rebelo D, Patrício M, Castelhano J, Cunha G, Januário C, Cunha L, Freire A, Castelo-Branco M. Cortical control of vertical and horizontal saccades in progressive supranuclear palsy: An exploratory fMRI study. J Neurol Sci 2017; 373:157-166. [DOI: 10.1016/j.jns.2016.12.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 11/25/2016] [Accepted: 12/23/2016] [Indexed: 11/27/2022]
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Lemos J, Neuparth T, Trigo M, Costa P, Vieira D, Cunha L, Ponte F, Costa PS, Metello LF, Carvalho AP. Single Low-Dose Ionizing Radiation Induces Genotoxicity in Adult Zebrafish and its Non-Irradiated Progeny. Bull Environ Contam Toxicol 2017; 98:190-195. [PMID: 28025689 DOI: 10.1007/s00128-016-2006-1] [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] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 12/08/2016] [Indexed: 06/06/2023]
Abstract
This study investigated to what extent a single exposure to low doses of ionizing radiation can induce genotoxic damage in irradiated adult zebrafish (Danio rerio) and its non-irradiated F1 progeny. Four groups of adult zebrafish were irradiated with a single dose of X-rays at 0 (control), 100, 500 and 1000 mGy, respectively, and couples of each group were allowed to reproduce following irradiation. Blood of parental fish and whole-body offspring were analysed by the comet assay for detection of DNA damage. The level of DNA damage in irradiated parental fish increased in a radiation dose-dependent manner at day 1 post-irradiation, but returned to the control level thereafter. The level of DNA damage in the progeny was directly correlated with the parental irradiation dose. Results highlight the genotoxic risk of a single exposure to low-dose ionizing radiation in irradiated individuals and also in its non-irradiated progeny.
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Affiliation(s)
- J Lemos
- ICBAS - Institute of Biomedical Sciences, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
| | - T Neuparth
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal
| | - M Trigo
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - P Costa
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
| | - D Vieira
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
| | - L Cunha
- IsoPor SA, PO box 4028, 4445, Ermesinde, Portugal
| | - F Ponte
- Radiotherapy Deptartment, Júlio Teixeira SA, Rua Arquitecto Cassiano Barbosa 6, F, Sala 26, 4100-009, Porto, Portugal
| | - P S Costa
- Radiotherapy Deptartment, Júlio Teixeira SA, Rua Arquitecto Cassiano Barbosa 6, F, Sala 26, 4100-009, Porto, Portugal
| | - L F Metello
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
- IsoPor SA, PO box 4028, 4445, Ermesinde, Portugal
| | - A P Carvalho
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal.
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
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Lemos J, Pereira D, Almendra L, Rebelo D, Patrício M, Castelhano J, Cunha G, Januário C, Cunha L, Freire A, Castelo-Branco M. Distinct functional properties of the vertical and horizontal saccadic network in Health and Parkinson's disease: An eye-tracking and fMRI study. Brain Res 2016; 1648:469-484. [DOI: 10.1016/j.brainres.2016.07.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/19/2016] [Accepted: 07/20/2016] [Indexed: 10/21/2022]
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Ribeiro P, Lemos J, Vaz A, Correia A, Girão F, Henriques P. Something inside the heart: a myxoid liposarcoma with cardiac involvement. Rev Port Cardiol 2011; 30:341-346. [PMID: 21638992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
A 70-year-old man presented with dry cough, dyspnea and fatigue. Physical examination revealed only a grade 3 heart murmur. The chest X-ray showed bilateral nodular opacities. A CT scan revealed several nodular masses in both lungs, pleura and abdomen, as well as a similar lesion inside the left ventricle. Echocardiography revealed not only the pedunculated nature of this lesion, but also infiltration of the ventricular wall. Biopsy showed it to be a myxoid liposarcoma. Since the disease was already widespread, and given the characteristics of the intraventricular mass, only palliative measures were prescribed.
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Affiliation(s)
- Pedro Ribeiro
- Serviço de Medicina Interna 1, Hospital de São Teotónio, Viseu, Portugal.
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Bourinet E, Stotz SC, Spaetgens RL, Dayanithi G, Lemos J, Nargeot J, Zamponi GW. Interaction of SNX482 with domains III and IV inhibits activation gating of alpha(1E) (Ca(V)2.3) calcium channels. Biophys J 2001; 81:79-88. [PMID: 11423396 PMCID: PMC1301493 DOI: 10.1016/s0006-3495(01)75681-0] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We have investigated the action of SNX482, a toxin isolated from the venom of the tarantula Hysterocrates gigas, on voltage-dependent calcium channels expressed in tsa-201 cells. Upon application of 200 nM SNX482, R-type alpha(1E) calcium channels underwent rapid and complete inhibition, which was only poorly reversible upon washout. However, upon application of strong membrane depolarizations, rapid and complete recovery from inhibition was obtained. Tail current analysis revealed that SNX482 mediated an approximately 70 mV depolarizing shift in half-activation potential, suggesting that the toxin inhibits alpha(1E) calcium channels by preventing their activation. Experiments involving chimeric channels combining structural features of alpha(1E) and alpha(1C) subunits indicated that the presence of the domain III and IV of alpha(1E) is a prerequisite for a strong gating inhibition. In contrast, L-type alpha(1C) channels underwent incomplete inhibition at saturating concentrations of SNX482 that was paralleled by a small shift in half-activation potential and which could be rapidly reversed, suggesting a less pronounced effect of the toxin on L-type calcium channel gating. We conclude that SNX482 does not exhibit unequivocal specificity for R-type channels, but highly effectively antagonizes their activation.
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Affiliation(s)
- E Bourinet
- Physiopathologie des Canaux Ioniques, Institut de Génétique Humaine, CNRS UPR1142, 34396 Montpellier Cedex 5, France.
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Newcomb R, Szoke B, Palma A, Wang G, Chen XH, Hopkins W, Cong R, Miller J, Urge L, Tarczy-Hornoch K, Loo JA, Dooley DJ, Nadasdi L, Tsien RW, Lemos J, Miljanich G. Selective peptide antagonist of the class E calcium channel from the venom of the tarantula Hysterocrates gigas. Biochemistry 1998; 37:15353-62. [PMID: 9799496 DOI: 10.1021/bi981255g] [Citation(s) in RCA: 325] [Impact Index Per Article: 12.5] [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: 11/30/2022]
Abstract
We describe the first potent and selective blocker of the class E Ca2+channel. SNX-482, a novel 41 amino acid peptide present in the venom of the African tarantula, Hysterocrates gigas, was identified through its ability to inhibit human class E Ca2+ channels stably expressed in a mammalian cell line. An IC50 of 15-30 nM was obtained for block of the class E Ca2+ channel, using either patch clamp electrophysiology or K+-evoked Ca2+ flux. At low nanomolar concentrations, SNX-482 also blocked a native resistant or R-type Ca2+ current in rat neurohypophyseal nerve terminals, but concentrations of 200-500 nM had no effect on R-type Ca2+ currents in several types of rat central neurons. The peptide has the sequence GVDKAGCRYMFGGCSVNDDCCPRLGCHSLFSYCAWDLTFSD-OH and is homologous to the spider peptides grammatoxin S1A and hanatoxin, both peptides with very different ion channel blocking selectivities. No effect of SNX-482 was observed on the following ion channel activities: Na+ or K+ currents in several cultured cell types (up to 500 nM); K+ current through cloned potassium channels Kv1.1 and Kv1. 4 expressed in Xenopus oocytes (up to 140 nM); Ca2+ flux through L- and T-type Ca2+ channels in an anterior pituitary cell line (GH3, up to 500 nM); and Ba2+ current through class A Ca2+ channels expressed in Xenopus oocytes (up to 280 nM). A weak effect was noted on Ca2+ current through cloned and stably expressed class B Ca2+ channels (IC50 > 500 nM). The unique selectivity of SNX-482 suggests its usefulness in studying the diversity, function, and pharmacology of class E and/or R-type Ca2+ channels.
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Affiliation(s)
- R Newcomb
- Elan Pharmaceuticals Inc., Menlo Park, California 94025, USA
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