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Marques JA, Falacho RI, Santos JM, Ramos JC, Palma PJ. Effects of endodontic irrigation solutions on structural, chemical, and mechanical properties of coronal dentin: A scoping review. J ESTHET RESTOR DENT 2024; 36:606-619. [PMID: 37698359 DOI: 10.1111/jerd.13135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023]
Abstract
OBJECTIVE This review aims to assess structural, chemical, and mechanical properties of coronal dentin after endodontic irrigation. MATERIALS AND METHODS Reporting followed the PRISMA extension for scoping reviews. An electronic search was carried out in PubMed, Embase, and Cochrane Library. Records filtered by language and published up to November 4, 2022 were independently screened by two researchers. Studies evaluating structural, chemical, or mechanical properties of human permanent coronal dentin after irrigation within the scope of nonsurgical root canal treatment were included. Data were extracted regarding study type, sample description and size, experimental groups, outcome, evaluation method, and main findings. RESULTS From the initial 1916 studies, and by adding 2 cross-references, 11 in vitro studies were included. Seven studies provide ultrastructural and/or chemical characterization, and six assessed microhardness and/or flexural strength. One percent to 8% sodium hypochlorite (NaOCl) and 1%-17% ethylenediaminetetraacetic acid (EDTA) were the most commonly tested solutions, with contact times of 2-240 min (NaOCl) and 1-1440 min (EDTA) being evaluated. CONCLUSIONS Overall, the literature is consensual regarding the inevitable impact of NaOCl and chelating agents on coronal dentin, with both deproteinizing and decalcifying effects being concentration- and time-dependent. The alteration of mechanical parameters further confirmed the surface and subsurface ultrastructural and chemical changes. CLINICAL SIGNIFICANCE Endodontic treatment success highly depends on restorative sealing. Understanding the result of exposing coronal dentin, the main substrate for bonding, to irrigants' action is crucial. The deproteinizing and decalcifying effects of NaOCl and chelating agents are both concentration- and time-dependent, causing surface and subsurface ultrastructural, chemical, and mechanical alterations.
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Affiliation(s)
- Joana A Marques
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Rui I Falacho
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Institute of Oral Implantology and Prosthodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR) and Center of Investigation on Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine and Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
| | - João Carlos Ramos
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Institute of Operative Dentistry, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Neto VD, Fiúza J, Pires I, Santos JM, Correia M. Hydroxychloroquine-induced cardiomyopathy predominantly affecting the right ventricle. Eur Heart J Cardiovasc Imaging 2024; 25:e141. [PMID: 37956098 DOI: 10.1093/ehjci/jead302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/15/2023] Open
Affiliation(s)
- Vanda Devesa Neto
- Cardiology Department, Tondela-Viseu Hospital Center, Av. Rei Dom Duarte, Viseu 3504-509, Portugal
- Faculty of Health Sciences, University of Beira Interior, Portugal
| | - João Fiúza
- Cardiology Department, Tondela-Viseu Hospital Center, Av. Rei Dom Duarte, Viseu 3504-509, Portugal
| | - Inês Pires
- Cardiology Department, Tondela-Viseu Hospital Center, Av. Rei Dom Duarte, Viseu 3504-509, Portugal
| | - João Miguel Santos
- Cardiology Department, Tondela-Viseu Hospital Center, Av. Rei Dom Duarte, Viseu 3504-509, Portugal
| | - Miguel Correia
- Cardiology Department, Tondela-Viseu Hospital Center, Av. Rei Dom Duarte, Viseu 3504-509, Portugal
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Pereira SA, Corte-Real A, Melo A, Magalhães L, Lavado N, Santos JM. Diagnostic Accuracy of Cone Beam Computed Tomography and Periapical Radiography for Detecting Apical Root Resorption in Retention Phase of Orthodontic Patients: A Cross-Sectional Study. J Clin Med 2024; 13:1248. [PMID: 38592063 PMCID: PMC10932007 DOI: 10.3390/jcm13051248] [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: 01/18/2024] [Revised: 02/11/2024] [Accepted: 02/19/2024] [Indexed: 04/10/2024] Open
Abstract
Objectives: This clinical study aimed to evaluate and compare the diagnostic accuracy of intraoral periapical radiography (PR) and cone beam computed tomography (CBCT) in detecting external apical root resorption (EARR) in orthodontic patients during the retention phase. Methods: The research involved 41 Caucasian patients who had undergone comprehensive orthodontic treatment, with a total of 328 teeth analyzed. The Kappa values for inter- and intra-examiner agreement were high for both PR and CBCT, indicating a robust level of agreement among examiners. The study used a four-point scale for classifying EARR. Results: This study showed comparable accuracy, sensitivity, and specificity between PR and CBCT when using the most stringent criterion of "Definitely present". The data suggested that CBCT outperformed PR when using a less stringent criterion ("Definitely present" or "Probably present"), particularly for maxillary incisors. However, overall diagnostic performance, as measured by the area under the ROC curve, showed only a slight advantage for CBCT over PR. Areas under the ROC curve range between 0.85 and 0.90 for PR and between 0.89 and 0.92 for CBCT. According to DeLong's test, there is no evidence to conclude that the area under the ROC curve is different for PR and CBCT. Conclusions: Both PR and CBCT are accurate diagnostic tools for identifying EARR, with PR being deemed more suitable for routine clinical use due to its cost-effectiveness and lower radiation exposure. The findings emphasize the importance of considering the risk-benefit ratio when deciding on imaging modalities for monitoring EARR in orthodontic patients.
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Affiliation(s)
- Sónia A. Pereira
- Institute of Orthodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;
| | - Ana Corte-Real
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;
- Forensic Dentistry Laboratory, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - Ana Melo
- Dentistry Department, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (A.M.); (L.M.)
| | - Linda Magalhães
- Dentistry Department, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (A.M.); (L.M.)
| | - Nuno Lavado
- Coimbra Institute of Engineering, Polytechnic Institute of Coimbra, 3030-199 Coimbra, Portugal;
- Research Centre in Asset Management and System Engineering (RCM2+), Polytechnic Institute of Coimbra, 3030-199 Coimbra, Portugal
| | - João Miguel Santos
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR) and Center of Investigation on Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
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4
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Quixabeira DCA, Pakola S, Jirovec E, Havunen R, Basnet S, Santos JM, Kudling TV, Clubb JHA, Haybout L, Arias V, Grönberg-Vähä-Koskela S, Cervera-Carrascon V, Kerkelä E, Pasanen A, Anttila M, Tapper J, Kanerva A, Hemminki A. Boosting cytotoxicity of adoptive allogeneic NK cell therapy with an oncolytic adenovirus encoding a human vIL-2 cytokine for the treatment of human ovarian cancer. Cancer Gene Ther 2023; 30:1679-1690. [PMID: 37949944 PMCID: PMC10721546 DOI: 10.1038/s41417-023-00674-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/31/2023] [Accepted: 09/29/2023] [Indexed: 11/12/2023]
Abstract
Despite good results in the treatment of hematological malignancies, Natural killer (NK) cells have shown limited effectiveness in solid tumors, such as ovarian cancer (OvCa). Here, we assessed the potential of an oncolytic adenovirus expressing a variant interleukin-2 (vIL-2) cytokine, Ad5/3-E2F-d24-vIL2 (vIL-2 virus), also known as TILT-452, to enhance NK cell therapy efficacy in human OvCa ex vivo. Human OvCa surgical specimens were processed into single-cell suspensions and NK cells were expanded from healthy blood donors. OvCa sample digests were co-cultured ex vivo with NK cells and vIL-2 virus and cancer cell killing potential assessed in real time through cell impedance measurement. Proposed therapeutic combination was evaluated in vivo with an OvCa patient-derived xenograft (PDX) in mice. Addition of vIL-2 virus significantly enhanced NK cell therapy killing potential in treated OvCa co-cultures. Similarly, vIL-2 virus in combination with NK cell therapy promoted the best in vivo OvCa tumor control. Mechanistically, vIL-2 virus induced higher percentages of granzyme B in NK cells, and CD8+ T cells, while T regulatory cell proportions remained comparable to NK cell monotherapy in vivo. Ad5/3-E2F-d24-vIL2 virus treatment represents a promising strategy to boost adoptive NK cell therapeutic effect in human OvCa.
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Affiliation(s)
- D C A Quixabeira
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - S Pakola
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - E Jirovec
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - R Havunen
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - S Basnet
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - J M Santos
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - T V Kudling
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - J H A Clubb
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - L Haybout
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - V Arias
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - S Grönberg-Vähä-Koskela
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland
| | - V Cervera-Carrascon
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - E Kerkelä
- Finnish Red Cross Blood Service, Helsinki, Finland
| | - A Pasanen
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - M Anttila
- Pathology, Finnish Food Authority, Helsinki, Finland
| | - J Tapper
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland
| | - A Kanerva
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland
| | - A Hemminki
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
- TILT Biotherapeutics Ltd, Helsinki, Finland.
- Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland.
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Quixabeira DCA, Jirovec E, Pakola S, Havunen R, Basnet S, Santos JM, Kudling TV, Clubb JHA, Haybout L, Arias V, Grönberg-Vähä-Koskela S, Cervera-Carrascon V, Pasanen A, Anttila M, Tapper J, Kanerva A, Hemminki A. Improving the cytotoxic response of tumor-infiltrating lymphocytes towards advanced stage ovarian cancer with an oncolytic adenovirus expressing a human vIL-2 cytokine. Cancer Gene Ther 2023; 30:1543-1553. [PMID: 37666898 PMCID: PMC10645590 DOI: 10.1038/s41417-023-00658-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/19/2023] [Accepted: 08/02/2023] [Indexed: 09/06/2023]
Abstract
While the presence of tumor-infiltrating lymphocytes (TILs) associates with improved survival prognosis in ovarian cancer (OvCa) patients, TIL therapy benefit is limited. Here, we evaluated an oncolytic adenovirus coding for a human variant IL-2 (vIL-2) cytokine, Ad5/3-E2F-d24-vIL2 (vIL-2 virus), also known as TILT-452, as an immunotherapeutic strategy to enhance TIL responsiveness towards advanced stage OvCa tumors. Fragments of resected human OvCa tumors were processed into single-cell suspensions, and autologous TILs were expanded from said samples. OvCa tumor specimens were co-cultured with TILs plus vIL-2 virus, and cell killing was assessed in real time through cell impedance measurement. Combination therapy was further evaluated in vivo through a patient-derived xenograft (PDX) ovarian cancer murine model. The combination of vIL-2 virus plus TILs had best cancer cell killing ex vivo compared to TILs monotherapy. These results were supported by an in vivo experiment, where the best OvCa tumor control was obtained when vIL-2 virus was added to TIL therapy. Furthermore, the proposed therapy induced a highly cytotoxic phenotype demonstrated by increased granzyme B intensity in NK cells, CD4+ T, and CD8+ T cells in treated tumors. Our results demonstrate that Ad5/3-E2F-d24-vIL2 therapy consistently improved TILs therapy cytotoxicity in treated human OvCa tumors.
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Affiliation(s)
- D C A Quixabeira
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - E Jirovec
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - S Pakola
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - R Havunen
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - S Basnet
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - J M Santos
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - T V Kudling
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - J H A Clubb
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - L Haybout
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - V Arias
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - S Grönberg-Vähä-Koskela
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland
| | - V Cervera-Carrascon
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- TILT Biotherapeutics Ltd, Helsinki, Finland
| | - A Pasanen
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - M Anttila
- Pathology, Finnish Food Authority, Helsinki, Finland
| | - J Tapper
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland
| | - A Kanerva
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland
| | - A Hemminki
- Cancer Gene Therapy Group, Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
- TILT Biotherapeutics Ltd, Helsinki, Finland.
- Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland.
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Diogo P, Amparo F Faustino M, Palma PJ, Rai A, Graça P M S Neves M, Miguel Santos J. May carriers at nanoscale improve the Endodontic's future? Adv Drug Deliv Rev 2023; 195:114731. [PMID: 36787865 DOI: 10.1016/j.addr.2023.114731] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/29/2022] [Accepted: 02/08/2023] [Indexed: 02/16/2023]
Abstract
Nanocarriers (NCs) are dynamic nanovehicles used to transport bioactive derivatives like therapeutical formulations, drugs and/or dyes. The current review assists in understanding the mechanism of action of several recent developed NCs with antimicrobial purposes. Here, nine NCs varieties are portrayed with focus on nineteen approaches that are fulfil described based on outcomes obtained from in vitro antimicrobial assays. All approaches have previously been verified and we underline the biochemical challenges of all NCs, expecting that the present data may encourage the application of NCs in endodontic antimicrobial basic research. Methodological limitations and the evident base gaps made not possible to draw a definite conclusion about the best NCs for achieving efficient antimicrobial outcomes in endodontic studies. Due to the lack of pre-clinical trials and the scarce number of clinical trials in this emergent area, there is still much room for improvement on several fronts.
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Affiliation(s)
- Patrícia Diogo
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal.
| | - M Amparo F Faustino
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - Akhilesh Rai
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | | | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR) and Center of Investigation on Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine and Clinical Academic Center of Coimbra (CACC), 3000-548 Coimbra, Portugal
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Ferreira GRM, Correia J, Fiuza J, Santos JM, Neto V, Cunha J, Fernandes F, Pires I, Marmelo B, Cabral C. Clinical Case 15—Warburg effect and pulmonary embolism: a confounding clinical case. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac157.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Presentation
A 61 year old man with a history of multiple lymph node metastasis of unknown primary cancer was admitted in the Emergency Room with sudden dyspnea preceded by left leg swelling. Physical examination revealed a blood pressure of 91/70mmHg, tachycardia, tachypnea and signs of deep vein thrombosis (DVT).
Diagnosis and management
Blood analysis showed increased serum lactate (SL) (5,5 mmol/L), a slight increase of cardiac enzymes and hypoglycemia, and imagiologic tests showed signs of bilateral pulmonary embolism (PE) and an increase of the right cardiac chambers. The patient was hospitalized with the diagnosis of intermediate-high risk PE. Because the patient presented persistent elevated SL and borderline hypotension, fibrinolysis was performed. However, the patient maintained high SL levels and hypotensive profile. After receiving the lymph node's biopsy result, which pointed towards a follicular lymphoma, the persistent hyperlactatemia, together with the hypoglycemic profile, was interpreted as a consequence of the Warburg Effect. Luckily, the patient didn't had any side effects of the fibrinolytic treatment.
Learning points
Acute high risk PE is marked by the presence of haemodynamic instability at presentation, and the finding of increased SL suggests peripheral hypoperfusion. Systemic thrombolytic therapy is indicated in most of patients with high risk PE. However, there are other causes of hyperlactatemia which the physician must be aware, as it can act as a confounder of PE risk assessment. The Warburg Effect may cause elevated SL in patients with cancer, which in turn are at risk of developing PE.
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Devesa Neto V, Santos JM, Pereira JG, Ferreira Santos L. PR and QRS intervals in basal electrocardiogram as a useful tool in screening family members for diagnosis of Brugada Syndrome. Europace 2022. [DOI: 10.1093/europace/euac053.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Diagnosis of Brugada Syndrome (BrS) requires documentation of a spontaneous or pharmacologically induced type 1 Brugada pattern. In individuals with normal basal electrocardiography, screening methods could be challenging. The aim of the study was to detect if other parameters in basal ECG could be a tool to predict the diagnosis of BrS in family members.
Methods
Prospective analysis of 78 patients with family history of BrS and referenced for screening. Basal electrocardiogram was performed in all patients. Patients with spontaneous type 1 Brugada pattern in basal ECG were initially excluded. Definitive diagnosis required a presence of a type 1 ECG pattern or conversion of a type 2 to type 1 following provocative test. The Mann-Whitney U test was used for median comparison between groups as univariate analysis. Analysis of the receiver operating characteristic (ROC) curves were performed to evaluate the predictive values of ECG parameters.
Results
6% (n=5) had spontaneous type 1 Brugada syndrome. 53% were male (n=41); mean age of 28,9±15,3 years. 31% (n=24) had confirmative diagnosis of BrS. 27% (n=21) were carriers of SCN5A mutation. Mean duration of intervals on basal ECG were: RR 871,2±156,0ms; PR 159,3±34,1ms; QRS 91,4±13,4ms; QTc 404,2±32,0. Syncope occurred in 5% of patients (n=5), 94% were asymptomatic.
By univariate analysis the distribution of PR and QRS intervals was significantly different. Wider PR interval was found in patients with BrS (p<0,01) with a median of 200ms (variance of 1269) versus healthy individuals (median of 150ms and variance of 601). Wider QRS intervals were also found in BrS patients compared with healthy individuals (p<0,01) (100ms (288) versus 80ms (204)). The cut-off point, with the most sensitivity (S) and specificity (E) obtained using the Youden index (YI) for PR interval was 170ms (YI 0,5389; Sensitivity (S)≈65% and Specificity(E)≈89%) and for QRS interval was 97ms (YI 0,5148; Sensitivity (S)≈70% and Specificity(E)≈82%).
Conclusion
Higher PR and QRS intervals were associated with BrS diagnosis comparing to healthy family members which may pose a cost-effective screening tool. More studies are needed to validate this hypothesis.
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Affiliation(s)
- V Devesa Neto
- Hospital Center Tondela Viseu, Cardiology, Viseu, Portugal
| | - JM Santos
- Hospital Center Tondela Viseu, Cardiology, Viseu, Portugal
| | - JG Pereira
- Hospital Center Tondela Viseu, Cardiology, Viseu, Portugal
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Pires MIFB, Almeida I, Santos JM, Correia M. Thrombus in transit through a patent foramen ovale: catch it if you can-a case report. Eur Heart J Case Rep 2021; 5:ytab382. [PMID: 34738060 PMCID: PMC8564690 DOI: 10.1093/ehjcr/ytab382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/16/2021] [Accepted: 09/14/2021] [Indexed: 11/24/2022]
Abstract
Background Patent foramen ovale (PFO) is one of the most common congenital heart defects, but the finding of a thrombus in transit (TIT) through a PFO is extremely rare. It is a therapeutic challenge, and systemic anticoagulation, cardiac surgery, or fibrinolysis should be considered. Case summary A 43-year-old woman was admitted with intermediate-high-risk pulmonary embolism. Transthoracic echocardiogram revealed a large right atrial mobile mass that crossed the interatrial septum through a PFO, compatible with TIT, and the patient was started on unfractionated heparin. The diagnosis was confirmed by transoesophageal echocardiogram (TOE). However, during TOE probe removal, the patient developed dyspnoea, sudoresis, and peripheral desaturation, and new image acquisition revealed sudden mass disappearance. Due to the possibility of paradoxical embolization associated with Valsalva manoeuvre, fibrinolysis with alteplase was promptly started. The patient had no signs of embolic or haemorrhagic complications and remained clinically stable. She was discharged on warfarin and then underwent percutaneous transcatheter closure of PFO. Discussion The treatment strategy of a TIT through a PFO is controversial, but surgery might be the most appropriate treatment for haemodynamically stable patients, while thrombolysis should be used in cases of haemodynamic instability. Transoesophageal echocardiogram is generally a safe procedure but pressure changes associated with Valsalva manoeuvre may induce embolization of a TIT and attention should be given to patient sedation and tolerance. After complete embolization of a TIT, emergent thrombolysis may be the only treatment option, in order to prevent disastrous consequences related to paradoxical embolism.
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Affiliation(s)
| | - Inês Almeida
- Cardiology Department, Tondela-Viseu Hospital Centre, Avenida Rei D. Duarte, 3504-509 Viseu, Portugal
| | - João Miguel Santos
- Cardiology Department, Tondela-Viseu Hospital Centre, Avenida Rei D. Duarte, 3504-509 Viseu, Portugal
| | - Miguel Correia
- Cardiology Department, Tondela-Viseu Hospital Centre, Avenida Rei D. Duarte, 3504-509 Viseu, Portugal
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Pires M, Santos JM, Neto V, Correia J, Ferreira G, Costa Cabral J, Almeida I. A new ratio with PaO2/FiO2 and pulmonary arterial systolic pressure in the prognosis of intermediate high risk pulmonary embolism. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Intermediate high (IH) risk pulmonary embolism (PE) defines a category of patients (P) at increased risk of haemodynamic decompensation. Therefore, it is important to develop tools to identify P who will have an unfavourable outcome. The ratio between arterial oxygen partial pressure (PaO2) to fractional inspired oxygen (FiO2) – P/F ratio - is associated with in-hospital mortality (IHM) in PE. Pulmonary arterial systolic pressure (PASP) is another prognostic factor, related with right ventricular (RV) pressure overload. This study evaluates the usefulness of a new ratio with P/F divided by PASP (P/F:PASP), reflecting both severity of respiratory failure and pressure overload, in the prognosis of P with IH risk PE.
Methods
All P admitted for IH risk PE in an Intensive Cardiac Care Unit (ICCU) for 10 years were included. P/F ratio was calculated with admission blood gas analysis and PASP was obtained with echocardiography at admission in ICCU. P/F:PASP ratio was considered low if inferior to its median. Need for fibrinolysis and IHM were assessed. Follow-up (FU) of 2 years for all-cause mortality was done. Statistical analysis used chi-square and Mann-Whitney U tests, binary logistic regressions and Kaplan-Meier curves.
Results
101 P were studied (mean age 63±17 years; 35.6% male). Mean P/F, PASP and P/F:PSAP were 264±68, 45±15 mmHg and 6.7±3.3, respectively. P/F:PASP was considered low if inferior to 5.9.
There was no difference in age, gender, comorbidities or Pulmonary Embolism Severity Index (PESI) between P with low or high P/F:PASP. However, low P/F:PASP ratio was associated with tachypnea at admission (p=0.034), higher BNP level (p=0.011), right precordial leads T-wave inversion (p=0.029), presence of echocardiographic right ventricle dilation (p=0.002) and lower TAPSE (p=0.002).
Among P who underwent fibrinolysis, 60.4% had low P/F:PASP and 39.6% had high P/F:PASP ratio (χ2=3.32, p=0.05). P/F:PASP ratio was a predictor of fibrinolysis (OR 0.83, 95% CI 0.72–0.96, p=0.011), with lower ratio increasing the probability of fibrinolysis. This result was independent from PESI (OR 0.84, 95% CI 0.72–0.97, p=0.015). P/F:PASP ratio was also a predictor of IHM (OR 0.62, 95% CI 0.38–1, p=0.05).
During FU, there was no difference in mortality between P with low or high P/F:PASP ratio (8.5% vs. 10.4%, respectively; Kaplan-Meier χ2=0.095; p=0.758).
Conclusions
In IH risk PE, low P/F:PASP ratio was associated with analytical, electrocardiographic and echocardiographic risk features. In this study, P/F:PASP ratio was a predictor of short term prognosis, allowing identification of P at higher risk of fibrinolysis and IHM, but it was not useful for long term prognosis, as 2-year mortality was similar between the groups. Therefore, this ratio, as a measure of both respiratory failure and pressure overload, might allow refinement in risk stratification of P with IH risk PE.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Pires
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - J M Santos
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - V Neto
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - J Correia
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - G Ferreira
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | | | - I Almeida
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
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Devesa Neto V, Santos JM, Pereira JG, Ferreira Santos L, Marmelo B. A 'fishy' ECG in a patient with chest pain. Neth Heart J 2021; 30:113-116. [PMID: 34528174 PMCID: PMC8799823 DOI: 10.1007/s12471-021-01631-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2021] [Indexed: 11/26/2022] Open
Affiliation(s)
- V Devesa Neto
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal.
| | - J M Santos
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
| | - J G Pereira
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
| | - L Ferreira Santos
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
| | - B Marmelo
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
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Affiliation(s)
- V Devesa Neto
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal.
| | - J M Santos
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
| | - J G Pereira
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
| | - L Ferreira Santos
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
| | - B Marmelo
- Cardiology Department, Tondela-Viseu Hospital Centre, Viseu, Portugal
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Santos JM, Marques JA, Diogo P, Messias A, Sousa V, Sequeira D, Palma PJ. Influence of Preoperative Pulp Inflammation in the Outcome of Full Pulpotomy Using a Dog Model. J Endod 2021; 47:1417-1426. [PMID: 34229033 DOI: 10.1016/j.joen.2021.06.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [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: 02/10/2021] [Revised: 06/24/2021] [Accepted: 06/27/2021] [Indexed: 12/14/2022]
Abstract
INTRODUCTION This study aimed to evaluate the impact of preoperative pulp inflammation on the histologic outcome of full pulpotomy performed in mature permanent posterior teeth using 4 different biomaterials. METHODS Five beagle dogs (providing a total of 120 roots) were selected. Dentin exposure was performed in teeth from the second and third quadrants. One week later, full pulpotomy procedures were performed using 4 different bioactive materials (ProRoot MTA [MTA], TotalFill BC Putty [BC], Biodentine [BIO], and an experimental cement [ie, pulp capping material]). The hemostasis time was registered. After 14 weeks, the animals were killed. Pulp-dentin tissues were histologically and radiographically assessed. The significance level was set at .05. RESULTS Teeth with previously exposed dentin revealed a statistically significant increase in the time required to achieve hemostasis (P < .001), therefore confirming the pulp inflammation status induced by 1-week exposure of occlusal dentin before performing full pulpotomy. There was no radiographic evidence of root resorption, periapical radiolucency, or lamina dura alterations. No statistically significant differences were observed between normal and inflamed pulp regardless of the evaluated histologic parameters. Moreover, histologic data concerning calcified barrier formation and the pulp tissue response show better results for BIO without statistical differences compared with MTA or BC (P > .05). The pulp capping material presented a lower performance, with statistically significant differences being detected in regard to the remaining 3 tested materials (P < .001). CONCLUSIONS Radiographic and histologic outcomes of full pulpotomy are not jeopardized by short-term preoperative pulp inflammation. Moreover, BIO, MTA, and BC cements present suitable alternatives to be used as pulp capping agents.
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Affiliation(s)
- João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Center for Innovation and Research in Oral Sciences, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Center for Neuroscience and Cell Biology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
| | - Joana A Marques
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Patrícia Diogo
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Center for Innovation and Research in Oral Sciences, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Ana Messias
- Center for Innovation and Research in Oral Sciences, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Institute of Oral Implantology and Prosthodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Vitor Sousa
- Institute of Pathological Anatomy, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Diana Sequeira
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Center for Neuroscience and Cell Biology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Center for Innovation and Research in Oral Sciences, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Palma PJ, Marques JA, Antunes M, Falacho RI, Sequeira D, Roseiro L, Santos JM, Ramos JC. Effect of restorative timing on shear bond strength of composite resin/calcium silicate-based cements adhesive interfaces. Clin Oral Investig 2020; 25:3131-3139. [PMID: 33047203 DOI: 10.1007/s00784-020-03640-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/07/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the shear bond strength inherent to immediate and delayed definitive composite resin restorations, over three different biomaterials. METHODS Fifty-four aluminum blocks were randomly assigned to six experimental groups (n = 9) according to the biomaterial (Biodentine, TotalFill BC Putty, or PCM) and restoration timing (immediate or 7 days delayed). Regarding the restorative procedures, a two-step self-etch bonding system (Clearfil SE Bond) was applied and subsequently restored using a flowable composite resin (SDR). After shear bond strength testing, fracture pattern analysis was performed. The significance level was set at α = 0.05. RESULTS Within the immediate groups, Biodentine showed the highest mean shear bond strength value, with no statistically significant differences (P > 0.05) being detected when compared with both TotalFill (P = 0.072) and PCM (P = 0.232) groups. Regarding the delayed restoration groups, Biodentine and TotalFill presented the highest mean shear bond strength value, with statistical differences when compared with PCM (P = 0.002 and P = 0.043, respectively). No statistically significant differences (P > 0.05) were verified between both immediate and delayed groups for each tested biomaterial. Also, a statistically significant association was found between the fracture type and the biomaterial (P < 0.001). CONCLUSIONS AND CLINICAL RELEVANCE Our findings suggest that all tested biomaterials present suitable alternatives which allow to perform restorative procedures immediately after pulp capping biomaterial placement (3 or 12 min, depending on the bioactive cement), therefore requiring one single appointment to complete the procedure. Biodentine and TotalFill BC Putty have shown superior shear bond strength results when compared with PCM, within a delayed timeframe (7 days).
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Affiliation(s)
- Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal. .,Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
| | - Joana A Marques
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal
| | - Márcia Antunes
- Dentistry Department, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal
| | - Rui I Falacho
- Institute of Oral Implantology and Prosthodontics, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal
| | - Diana Sequeira
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal
| | - Luís Roseiro
- Department of Mechanical Engineering, Institute of Engineering of Coimbra, Polytechnic - ISEC, 3000, Coimbra, Portugal
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal.,Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - João C Ramos
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Institute of Operative Dentistry, Faculty of Medicine, University of Coimbra, 3000-075, Coimbra, Portugal
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Palma PJ, Marques JA, Casau M, Santos A, Caramelo F, Falacho RI, Santos JM. Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips. Biomedicines 2020; 8:biomedicines8100383. [PMID: 32998221 PMCID: PMC7601836 DOI: 10.3390/biomedicines8100383] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/19/2020] [Accepted: 09/25/2020] [Indexed: 02/06/2023] Open
Abstract
The aim of this study is to compare root-end preparation performed with two different ultrasonic tips-CVDentus and NSK-and respective time requirements. After root-end resection, 32 teeth were randomly divided in two groups, according to the ultrasonic tip used for root-end preparation. Preparation time was recorded. Photomicrographs were taken to assess the following parameters: root surface microcracking, marginal integrity and presence of debris. One ultrasonic tip from each group was analyzed through scanning electron microscopy before and after root-end preparation. The significance level was set at α = 0.05. Incidence of microcracks in both groups was 12.5%. Solely intracanal microcracking was found, consistently positioned within the widest side of the remaining dentine. No statistically significant differences were verified between both experimental groups regarding marginal integrity (p = 0.102) and preparation time (p = 0.780), whereas statistical differences (p = 0.003) were found concerning the presence of debris (the minimum registered score was mostly verified in CVDentus group). NSK tips showed major morphological changes, with extensive surface wear and noticeable loss of particles, which was not verified on CVDentus tips. Our findings suggest significant differences regarding root-end preparation walls quality, with CVDentus tips showing better results. Concerning microcracking, as well as preparation time and marginal integrity, both ultrasonic tips showed similar results. Qualitative analysis exposed NSK tips major morphological changes and wear after use, which was not verified on CVDentus tips.
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Affiliation(s)
- Paulo J. Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (J.A.M.); (J.M.S.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
- Correspondence: ; Tel.: +351-239-249-151
| | - Joana A. Marques
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (J.A.M.); (J.M.S.)
| | - Margarida Casau
- Dentistry Department, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (M.C.); (A.S.)
| | - André Santos
- Dentistry Department, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (M.C.); (A.S.)
| | - Francisco Caramelo
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Biostatistics and Medical Informatics (LBIM), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;
| | - Rui I. Falacho
- Institute of Oral Implantology and Prosthodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (J.A.M.); (J.M.S.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
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16
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Pinto D, Marques A, Pereira JF, Palma PJ, Santos JM. Long-Term Prognosis of Endodontic Microsurgery-A Systematic Review and Meta-Analysis. Medicina (Kaunas) 2020; 56:E447. [PMID: 32899437 PMCID: PMC7558840 DOI: 10.3390/medicina56090447] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 12/22/2022]
Abstract
Background and objectives: The long-term outcome of endodontic microsurgery (EMS) performed on root-filled teeth affected by post-treatment apical periodontitis (AP) has been a matter of debate, re-launched by the introduction of novel root-end filling materials which have been proven to improve the short-term outcome of EMS. The purpose of this systematic review and meta-analysis is to evaluate the clinical and radiographic long-term outcome of endodontic microsurgery in teeth diagnosed with secondary AP through radiographic evaluation. Materials and Methods: This systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Inclusion and exclusion criteria were defined a priori to select the best longitudinal evidence. Only randomized clinical trials (RCT) and prospective clinical studies (PCS), with a follow-up ≥ 2-year, and exhibiting well-established clinical and radiographic outcome criteria, were selected. Results: A total of 573 articles were obtained, from which 10 fulfill inclusion criteria: 6 PCS and 4 RCT. Meta-analysis showed a pooled proportion of success rate of 91.3%, from an overall amount of 453 treated teeth included in RCT; from overall 839 included teeth in PCS, a pooled success rate of 78.4% was observed, with the follow-up time ranging from 2 to 13-years. Survival rate outcomes varied from 79 to 100% for the same follow-up period. Five prognostic factors with influence on the outcome were disclosed: smoking habits, tooth location and type, absence/presence of dentinal defects, interproximal bone level, and root-end filling material. Conclusions: High success rates and predictable results can be expected when EMS is performed by trained endodontists, allowing good prognosis and preservation of teeth affected by secondary AP.
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Affiliation(s)
- Diogo Pinto
- Department of Dentistry, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;
| | - Andréa Marques
- Rheumatology Department, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal;
- Health Sciences Research Unit: Nursing, UICISA-E, 3000-075 Coimbra, Portugal
| | - Joana F. Pereira
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (J.F.P.); (P.J.P.)
| | - Paulo J. Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (J.F.P.); (P.J.P.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal; (J.F.P.); (P.J.P.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
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17
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Antunes H, Gil J, Marmelo B, Gonçalves ML, Pires MI, Santos JM, Correia M, Cabral JC. Iatrogenic Complications During the Diagnostic Work-Up of an Inflammatory Cardiomyopathy. IJCS 2020. [DOI: 10.36660/ijcs.20190153] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Diogo P, F Faustino MA, P M S Neves MG, Palma PJ, P Baptista I, Gonçalves T, Santos JM. An Insight into Advanced Approaches for Photosensitizer Optimization in Endodontics-A Critical Review. J Funct Biomater 2019; 10:E44. [PMID: 31575005 PMCID: PMC6963755 DOI: 10.3390/jfb10040044] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 05/24/2019] [Revised: 09/10/2019] [Accepted: 09/23/2019] [Indexed: 02/07/2023] Open
Abstract
Apical periodontitis is a biofilm-mediated disease; therefore, an antimicrobial approach is essential to cure or prevent its development. In the quest for efficient strategies to achieve this objective, antimicrobial photodynamic therapy (aPDT) has emerged as an alternative to classical endodontic irrigation solutions and antibiotics. The aim of the present critical review is to summarize the available evidence on photosensitizers (PSs) which has been confirmed in numerous studies from diverse areas combined with several antimicrobial strategies, as well as emerging options in order to optimize their properties and effects that might be translational and useful in the near future in basic endodontic research. Published data notably support the need for continuing the search for an ideal endodontic photosensitizer, that is, one which acts as an excellent antimicrobial agent without causing toxicity to the human host cells or presenting the risk of tooth discoloration. The current literature on experimental studies mainly relies on assessment of mixed disinfection protocols, combining approaches which are already available with aPDT as an adjunct therapy. In this review, several approaches concerning aPDT efficiency are appraised, such as the use of bacteriophages, biopolymers, drug and light delivery systems, efflux pump inhibitors, negative pressure systems, and peptides. The authors also analyzed their combination with other approaches for aPDT improvement, such as sonodynamic therapy. All of the aforementioned techniques have already been tested, and we highlight the biological challenges of each formulation, predicting that the collected information may encourage the development of other effective photoactive materials, in addition to being useful in endodontic basic research. Moreover, special attention is dedicated to studies on detailed conditions, aPDT features with a focus on PS enhancer strategies, and the respective final antimicrobial outcomes. From all the mentioned approaches, the two which are most widely discussed and which show the most promising outcomes for endodontic purposes are drug delivery systems (with strong development in nanoparticles) and PS solubilizers.
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Affiliation(s)
- Patrícia Diogo
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal.
- FMUC, Faculty of Medicine, University of Coimbra, 3000-370 Coimbra, Portugal.
| | - M Amparo F Faustino
- QOPNA & LAQV-REQUIMTE and Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - M Graça P M S Neves
- QOPNA & LAQV-REQUIMTE and Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal.
- FMUC, Faculty of Medicine, University of Coimbra, 3000-370 Coimbra, Portugal.
| | - Isabel P Baptista
- FMUC, Faculty of Medicine, University of Coimbra, 3000-370 Coimbra, Portugal.
- Institute of Periodontology, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal.
| | - Teresa Gonçalves
- FMUC, Faculty of Medicine, University of Coimbra, 3000-370 Coimbra, Portugal.
- CNC, Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal.
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal.
- FMUC, Faculty of Medicine, University of Coimbra, 3000-370 Coimbra, Portugal.
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19
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Santos JM, Mendonça VA, Ribeiro VGC, Tossige-Gomes R, Fonseca SF, Prates ACN, Flor J, Oliveira ACC, Martins JB, Garcia BCC, Leite HR, Figueiredo PHS, Bernardo-Filho M, Lacerda ACR. Does whole body vibration exercise improve oxidative stress markers in women with fibromyalgia? Braz J Med Biol Res 2019; 52:e8688. [PMID: 31389493 PMCID: PMC6686277 DOI: 10.1590/1414-431x20198688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/13/2019] [Indexed: 12/15/2022] Open
Abstract
The objective of this study was to investigate the effect of whole body vibration (WBV) exercise on oxidative stress markers in a group of women with fibromyalgia (FM) compared to a group of healthy women (CT). Twenty-one women diagnosed with FM and 21 age- and weight-matched healthy women were enrolled the study. Plasma oxidative stress markers (primary outcomes) were evaluated at rest and after WBV, and included thiobarbituric acid reactive substances (TBARS), iron reduction capacity (FRAP), superoxide dismutase antioxidant enzymes activity (SOD), and catalase (CAT). At rest, the FM group had higher TBARS (P<0.001) and FRAP (P<0.001), and lower CAT (P=0.005) compared to the CT. In the CT group, the WBV had no effect on TBARS (P=0.559) and FRAP (P=0.926), whereas it increased both SOD (P<0.001) and CAT (P<0.001). In the FM group, the WBV reduced TBARS (p <0.001), FRAP (P<0.001), and CAT (P=0.005), while it increased SOD (P=0.019). There was an interaction effect (moments vs groups) in the TBARS (effect size=1.34), FRAP (effect size=0.93), CAT (effect size=1.45), and SOD (effect size=1.44) (P<0.001). A single trial of WBV exercise improved all oxidant and antioxidant parameters towards a greater adaptation to the stress response in FM women.
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Affiliation(s)
- J M Santos
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - V A Mendonça
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - V G C Ribeiro
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - R Tossige-Gomes
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - S F Fonseca
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - A C N Prates
- Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - J Flor
- Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - A C C Oliveira
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - J B Martins
- Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - B C C Garcia
- Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - H R Leite
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - P H S Figueiredo
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - M Bernardo-Filho
- Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - A C R Lacerda
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Programa Multicêntrico de Pós-graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
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20
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Menezes VG, Monte APO, Gouveia BB, Lins TLBG, Donfack NJ, Macedo TJS, Barberino RS, Santos JM, Matos MHT, Batista AM, Wischral A. Effects of leptin on the follicular development and mitochondrial activity of ovine isolated early antral follicles cultured in vitro. Theriogenology 2019; 138:77-83. [PMID: 31302434 DOI: 10.1016/j.theriogenology.2019.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 07/03/2019] [Accepted: 07/04/2019] [Indexed: 12/21/2022]
Abstract
This study evaluated the effect of leptin on the in vitro culture of isolated sheep early antral follicles. Early antral follicles (300-450 μm) were isolated and cultured for 12 days in tissue culture medium 199 (TCM 199) supplemented with glutamine, hypoxanthine, transferrin, insulin, selenium, ascorbic acid, bovine serum albumin (BSA) and recombinant follicle stimulating hormone (rFSH) (TCM 199+: control medium) or TCM 199+ supplemented with 2 or 10 ng/mL leptin. After culture, oocytes were subjected to in vitro maturation (IVM). The parameters analyzed were morphology, extrusion rate, follicular diameter, growth and fully-grown oocytes (oocytes ≥110 μm) rates. After IVM, reactive oxygen species (ROS) levels, mitochondrial activity, meiotic stages and meiotic resumption rates were also analyzed. After 12 days of culture, the concentration of 2 ng/mL of leptin showed a higher percentage of morphologically normal follicles, fully-grown oocytes (≥110 μm), active mitochondria and meiotic resumption compared to the control medium (TCM 199+; P < 0.05) but did not differ when compared to leptin concentration of 10 ng/mL (P > 0.05). After culturing, no significant differences existed among treatments in terms of the follicle diameter and ROS levels. In conclusion, the addition of 2 ng/mL leptin to the base culture medium is capable of improving follicular survival, oocyte growth, mitochondrial activity and meiotic resumption after the in vitro culture of isolated sheep early antral follicles.
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Affiliation(s)
- V G Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil.
| | - A P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - B B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - T L B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - N J Donfack
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - T J S Macedo
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - R S Barberino
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - J M Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - M H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE, Brazil
| | - A M Batista
- Department of Veterinary Medicine, Federal Rural University of Pernambuco, Recife, PE, Brazil
| | - A Wischral
- Department of Veterinary Medicine, Federal Rural University of Pernambuco, Recife, PE, Brazil
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21
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Barros VRP, Monte APO, Lins TLBG, Santos JM, Menezes VG, Cavalcante AYP, Araújo VR, Gouveia BB, Matos MHT. In vitro survival, growth, and maturation of sheep oocytes from secondary follicles cultured in serum-free conditions: impact of a constant or a sequential medium containing recombinant human FSH. Domest Anim Endocrinol 2019; 67:71-79. [PMID: 30765293 DOI: 10.1016/j.domaniend.2018.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 12/16/2022]
Abstract
This study evaluated the in vitro development and maturation of ovine oocytes from secondary follicles cultured in serum-free medium containing fixed or sequential concentrations of recombinant human FSH (rhFSH). Follicles were cultured in α-MEM+ alone or with constant (500, 750, or 1,000 ng/mL) or sequential concentrations of rhFSH (seq. 1: day 6 = 500; day 12 = 750; day 18 = 1,000 ng/mL and seq. 2: day 6 = 100; day 12 = 500; day 18 = 1,000 ng/mL). At the end of the experiment, follicular survival was higher (P < 0.05) in 750 ng/mL rhFSH than the control and 1,000 ng/mL rhFSH. As early as day 6 of culture, antral cavity formation was observed in all treatments. Follicular diameter increased progressively and significantly in all treatments throughout 18 d of culture. Furthermore, addition of rhFSH to the medium promoted a significant increase in the percentage of fully grown oocytes in all treatments compared to α-MEM+. Mitochondrial activity was higher in rhFSH treatments than in the control, except in rhFSH seq. 2 (P < 0.05). Maturation rates increased in oocytes from intact follicles cultured in 750 ng/mL rhFSH compared to the control (P < 0.05). In conclusion, rhFSH at 750 ng/mL maintained the survival of secondary follicles cultured in serum-free medium, improved oocyte growth, mitochondrial activity, and oocyte maturation.
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Affiliation(s)
- V R P Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - T L B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - J M Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V G Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A Y P Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V R Araújo
- Health Center Science, State University of Ceará, 60714-903 Fortaleza, CE, Brazil
| | - B B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - M H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil.
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22
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Sequeira DB, Seabra CM, Palma PJ, Cardoso AL, Peça J, Santos JM. Effects of a New Bioceramic Material on Human Apical Papilla Cells. J Funct Biomater 2018; 9:E74. [PMID: 30558359 PMCID: PMC6306901 DOI: 10.3390/jfb9040074] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The development of materials with bioregenerative properties is critically important for vital pulp therapies and regenerative endodontic procedures. The aim of this study was to evaluate the cytocompatibility and cytotoxicity of a new endodontic biomaterial, PulpGuard, in comparison with two other biomaterials widely used in endodontic procedures, ProRoot Mineral Trioxide Aggregate (MTA) and Biodentine. METHODS Apical papilla cells (APCs) were isolated from third molars with incomplete rhizogenesis from patients with orthodontic indication for dental extraction. Cultured APCs were incubated for 24, 48, or 72 h with different dilutions of eluates prepared from the three materials. Cellular viability, mobility, and proliferation were assessed in vitro using the Alamar Blue assay and a wound-healing test. The cells were also cultured in direct contact with the surface of each material. These were then analyzed via Scanning Electron Microscopy (SEM), and the surface chemical composition was determined by Energy-Dispersive Spectroscopy (EDS). RESULTS Cells incubated in the presence of eluates extracted from ProRoot MTA and PulpGuard presented rates of viability comparable to those of control cells; in contrast, undiluted Biodentine eluates induced a significant reduction of cellular viability. The wound-healing assay revealed that eluates from ProRoot MTA and PulpGuard allowed for unhindered cellular migration and proliferation. Cellular adhesion was observed on the surface of all materials tested. Consistent with their disclosed composition, EDS analysis found high relative abundance of calcium in Biodentine and ProRoot MTA and high abundance of silicon in PulpGuard. Significant amounts of zinc and calcium were also present in PulpGuard discs. Concerning solubility, Biodentine and ProRoot MTA presented mild weight loss after eluate extraction, while PulpGuard discs showed significant water uptake. CONCLUSIONS PulpGuard displayed a good in vitro cytocompatibility profile and did not significantly affect the proliferation and migration rates of APCs. Cells cultured in the presence of PulpGuard eluates displayed a similar profile to those cultured with eluates from the widely used endodontic cement ProRoot MTA.
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Affiliation(s)
- Diana B Sequeira
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra 3030-789, Portugal.
- PhD Program in Experimental Biology and Biomedicine (PDBEB), University of Coimbra, Coimbra 3004-504, Portugal.
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra 3000-075 Portugal.
| | - Catarina M Seabra
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra 3030-789, Portugal.
| | - Paulo J Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra 3000-075 Portugal.
| | - Ana Luísa Cardoso
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra 3030-789, Portugal.
| | - João Peça
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra 3004-504, Portugal.
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra 3030-789, Portugal.
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra 3000-075 Portugal.
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23
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Palma PJ, Messias A, Cerqueira AR, Tavares LD, Caramelo F, Roseiro L, Santos JM. Cyclic fatigue resistance of three rotary file systems in a dynamic model after immersion in sodium hypochlorite. Odontology 2018; 107:324-332. [PMID: 30542934 DOI: 10.1007/s10266-018-0401-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 06/20/2018] [Accepted: 11/25/2018] [Indexed: 10/27/2022]
Abstract
To evaluate the effect of immersion in 3% sodium hypochlorite solution in the resistance to cyclic fatigue of three nickel-titanium (NiTi) rotary file systems, ProTaper Next (PTN), Hyflex CM (CM), and Hyflex EDM (EDM), in a mechanical model featuring axial movement. Ninety instruments of three different NiTi rotary file systems, PTN (size 25, 0.06 taper), CM (25, 0.06), and EDM (25/~, variable taper), were randomly divided according to a 3 × 3 factorial design and tested under dynamic immersion in a 3% NaOCl solution (1 or 5 min) or without immersion, making a total of 9 groups (n = 10). Files were tested in an artificial root canal with 45° angle and 5 mm radius apical curvature being submitted to back-and-forth movements until fracture. Statistical analysis was performed using two-way factorial ANOVA with Bonferroni post-hoc tests, at a significance level of 5%. Instruments were evaluated for reliability using a Weilbull approach. Regardless of the immersion treatment, PTN had on average 1200 ± 178 cycles to fracture, CM had 1949 ± 362, and EDM had 5573 ± 853, which was a significantly different (P < 0.01). The NaOCl immersion promoted a significant reduction in the mean number of cycles to fracture (P = 0.01), and was reflected in a significant reduction of the characteristic life of the instruments of the CM end EDM groups. Within this study conditions, EDM instruments performed better to cyclic fatigue followed by CM and then PTN. Immersion in NaOCl decreased the resistance to cyclic fatigue of all tested instruments, but affected more those manufactured from CM wire.
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Affiliation(s)
- Paulo Jorge Palma
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
| | - Ana Messias
- Department of Dentistry, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | | | - Luís Diogo Tavares
- Department of Dentistry, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Francisco Caramelo
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Laboratory of Biostatistics and Medical Informatics (LBIM), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Luís Roseiro
- Department of Mechanical Engineering, Institute of Engineering of Coimbra, Polytechnic - ISEC, Coimbra, Portugal
| | - João Miguel Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
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24
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Calapez AR, Serra SRQ, Santos JM, Branco P, Ferreira T, Hein T, Brito AG, Feio MJ. The effect of hypoxia and flow decrease in macroinvertebrate functional responses: A trait-based approach to multiple-stressors in mesocosms. Sci Total Environ 2018; 637-638:647-656. [PMID: 29758421 DOI: 10.1016/j.scitotenv.2018.05.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 02/21/2018] [Revised: 05/04/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
River ecosystems are most often subject to multiple co-occurring anthropogenic stressors. Mediterranean streams are particularly affected by water scarcity and organic loads that commonly lead to a simultaneous reduction in flow and increasing depletion of dissolved oxygen. In the present study, the single and combined effects of water scarcity (flow velocity reduction) and dissolved oxygen depletion were used to evaluate alterations of drifting macroinvertebrates on a channel mesocosm system, by employing a multiple trait-based approach. Our main findings confirmed that the impact of the two combined stressors can be implicated in alterations of ecosystem functions as result of the changes in proportions of biological traits. Overall, our results showed that, individually, flow velocity reduction and a severe oxygen depletion promoted a shift in community traits. In more detail, biological traits describing the dispersal of organisms and their respiration showed the strongest responses. The respiration mode responded to low flow with drift increase of gill breathers and decrease of individuals with tegument, whereas dispersal was clearly affected by the combination of stressors. Resistance through eggs was higher with the single effect of flow reduction, while swimmers´ relative abundance increased in individuals that drift after exposure to the combination of stressors. Thus, while flow reduction alone is expected to specifically filter out the gill breathers and the egg producers, the combination of stressors will impact more drastically organism's dispersal and swimmers. Such changes in biological traits can result in variations in ecosystem functioning through, for example, local changes in biomass, secondary production, stream metabolism as well as resulting in biodiversity losses or alterations of its distribution patterns.
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Affiliation(s)
- A R Calapez
- LEAF - Linking Landscape, Environment, Agriculture and Food, School of Agriculture, University of Lisbon, Lisbon, Portugal; MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal.
| | - S R Q Serra
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - J M Santos
- CEF - Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - P Branco
- CEF - Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal; CERIS - Civil Engineering for Research and Innovation for Sustainability, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal
| | - T Ferreira
- CEF - Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - T Hein
- Institute of Hydrobiology and Aquatic Ecosystem Management, Department of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences, Vienna, Austria
| | - A G Brito
- LEAF - Linking Landscape, Environment, Agriculture and Food, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - M J Feio
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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25
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Goncalves Pereira JG, Pires MI, Abreu L, Antunes H, Goncalves ML, Santos JM, Marmelo B, Moreira D, Silverio R, Santos LF, Costa Cabral J. P4206Percutaneous coronary intervention risk models: evaluating accuracy at predicting in-hospital mortality. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - M I Pires
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - L Abreu
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - H Antunes
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | | | - J M Santos
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - B Marmelo
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - D Moreira
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
| | - R Silverio
- Hospital Sao Teotonio, Internal Medicine, Viseu, Portugal
| | - L F Santos
- Hospital Sao Teotonio, Cardiology, Viseu, Portugal
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26
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Diogo P, Mota M, Fernandes C, Sequeira D, Palma P, Caramelo F, Neves MGP, Faustino MAF, Gonçalves T, Santos JM. Is the chlorophyll derivative Zn(II)e 6 Me a good photosensitizer to be used in root canal disinfection? Photodiagnosis Photodyn Ther 2018; 22:205-211. [DOI: 10.1016/j.pdpdt.2018.04.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/07/2018] [Accepted: 04/16/2018] [Indexed: 01/10/2023]
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27
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Cervera-Carrascon V, Siurala M, Santos JM, Havunen R, Tähtinen S, Karell P, Sorsa S, Kanerva A, Hemminki A. TNFa and IL-2 armed adenoviruses enable complete responses by anti-PD-1 checkpoint blockade. Oncoimmunology 2018; 7:e1412902. [PMID: 29721366 DOI: 10.1080/2162402x.2017.1412902] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/02/2017] [Accepted: 11/20/2017] [Indexed: 02/07/2023] Open
Abstract
Releasing the patient's immune system against their own malignancy by the use of checkpoint inhibitors is delivering promising results. However, only a subset of patients currently benefit from them. One major limitation of these therapies relates to the inability of T cells to detect or penetrate into the tumor resulting in unresponsiveness to checkpoint inhibition. Virotherapy is an attractive tool for enabling checkpoint inhibitors as viruses are naturally recognized by innate defense elements which draws the attention of the immune system. Besides their intrinsic immune stimulating properties, the adenoviruses used here are armed to express tumor necrosis factor alpha (TNFa) and interleukin-2 (IL-2). These cytokines result in immunological danger signaling and multiple appealing T-cell effects, including trafficking, activation and propagation. When these viruses were injected into B16.OVA melanoma tumors in animals concomitantly receiving programmed cell-death protein 1 (PD-1) blocking antibodies both tumor growth control (p < 0.0001) and overall survival (p < 0.01) were improved. In this set-up, the addition of adoptive cell therapy with OT-I lymphocytes did not increase efficacy further. When virus injections were initiated before antibody treatment in a prime-boost approach, 100% of tumors regressed completely and all mice survived. Viral expression of IL2 and TNFa altered the cytokine balance in the tumor microenvironment towards Th1 and increased the intratumoral proportion of CD8+ and conventional CD4+ T cells. These preclinical studies provide the rationale and schedule for a clinical trial where oncolytic adenovirus coding for TNFa and IL-2 (TILT-123) is used in melanoma patients receiving an anti-PD-1 antibody.
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Affiliation(s)
- V Cervera-Carrascon
- TILT Biotherapeutics Ltd, Helsinki, Uusima, Finland.,Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland
| | - M Siurala
- TILT Biotherapeutics Ltd, Helsinki, Uusima, Finland.,Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland
| | - J M Santos
- TILT Biotherapeutics Ltd, Helsinki, Uusima, Finland.,Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland
| | - R Havunen
- TILT Biotherapeutics Ltd, Helsinki, Uusima, Finland.,Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland
| | - S Tähtinen
- Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland
| | - P Karell
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Uusima, Finland
| | - S Sorsa
- TILT Biotherapeutics Ltd, Helsinki, Uusima, Finland.,Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland
| | - A Kanerva
- Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland.,Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Uusima, Finland
| | - A Hemminki
- TILT Biotherapeutics Ltd, Helsinki, Uusima, Finland.,Department of Oncology, Cancer Gene Therapy Group, Faculty of Medicine, University of Helsinki, Helsinki, Uusima, Finland.,Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Uusima, Finland
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28
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Ribeiro VGC, Mendonça VA, Souza ALC, Fonseca SF, Camargos ACR, Lage VKS, Neves CDC, Santos JM, Teixeira LAC, Vieira ELM, Teixeira Junior AL, Mezêncio B, Fernandes JSC, Leite HR, Poortmans JR, Lacerda ACR. Inflammatory biomarkers responses after acute whole body vibration in fibromyalgia. ACTA ACUST UNITED AC 2018. [PMID: 29513791 PMCID: PMC5856441 DOI: 10.1590/1414-431x20176775] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The aims of this study were 1) to characterize the intensity of the vibration stimulation in women diagnosed with fibromyalgia (FM) compared to a control group of healthy women (HW) matched by age and anthropometric parameters, and 2) to investigate the effect of a single session of whole body vibration (WBV) on inflammatory responses. Levels of adipokines, soluble tumor necrosis factor receptors (sTNFr1, sTNFr2), and brain-derived neurotrophic factor (BDNF) were determined by enzyme-linked immunosorbent assay. Oxygen consumption (VO2) was estimated by a portable gas analysis system, heart rate (HR) was measured using a HR monitor, and perceived exertion (RPE) was evaluated using the Borg scale of perceived exertion. Acutely mild WBV increased VO2 and HR similarly in both groups. There was an interaction (disease vs vibration) in RPE (P=0.0078), showing a higher RPE in FM compared to HW at rest, which further increased in FM after acute WBV, whereas it remained unchanged in HW. In addition, there was an interaction (disease vs vibration) in plasma levels of adiponectin (P=0.0001), sTNFR1 (P=0.000001), sTNFR2 (P=0.0052), leptin (P=0.0007), resistin (P=0.0166), and BDNF (P=0.0179). In conclusion, a single acute session of mild and short WBV can improve the inflammatory status in patients with FM, reaching values close to those of matched HW at their basal status. The neuroendocrine mechanism seems to be an exercise-induced modulation towards greater adaptation to stress response in these patients.
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Affiliation(s)
- V G C Ribeiro
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - V A Mendonça
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil.,Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - A L C Souza
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - S F Fonseca
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - A C R Camargos
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - V K S Lage
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - C D C Neves
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - J M Santos
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - L A C Teixeira
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - E L M Vieira
- Escola de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - A L Teixeira Junior
- Escola de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - B Mezêncio
- Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, SP, Brasil
| | - J S C Fernandes
- Departamento de Agronomia, Faculdade de Ciências Agrárias, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - H R Leite
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil.,Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - J R Poortmans
- Faculty of Motor Sciences, Université of Libre de Bruxelles, Brussels, Belgium
| | - A C R Lacerda
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil.,Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.,Departamento de Fisioterapia, Faculdade de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
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Cipriano M, Correia JC, Camões SP, Oliveira NG, Cruz P, Cruz H, Castro M, Ruas JL, Santos JM, Miranda JP. The role of epigenetic modifiers in extended cultures of functional hepatocyte-like cells derived from human neonatal mesenchymal stem cells. Arch Toxicol 2016; 91:2469-2489. [PMID: 27909741 DOI: 10.1007/s00204-016-1901-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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: 07/29/2016] [Accepted: 11/24/2016] [Indexed: 01/06/2023]
Abstract
The development of predictive in vitro stem cell-derived hepatic models for toxicological drug screening is an increasingly important topic. Herein, umbilical cord tissue-derived mesenchymal stem cells (hnMSCs) underwent hepatic differentiation using an optimized three-step core protocol of 24 days that mimicked liver embryogenesis with further exposure to epigenetic markers, namely the histone deacetylase inhibitor trichostatin A (TSA), the cytidine analogue 5-azacytidine (5-AZA) and dimethyl sulfoxide (DMSO). FGF-2 and FGF-4 were also tested to improve endoderm commitment and foregut induction during Step 1 of the differentiation protocol, being HHEX expression increased with FGF-2 (4 ng/mL). DMSO (1%, v/v) when added at day 10 enhanced cell morphology, glycogen storage ability, enzymatic activity and induction capacity. Moreover, the stability of the hepatic phenotype under the optimized differentiation conditions was examined up to day 34. Our findings showed that hepatocyte-like cells (HLCs) acquired the ability to metabolize glucose, produce albumin and detoxify ammonia. Global transcriptional analysis of the HLCs showed a partial hepatic differentiation degree. Global analysis of gene expression in the different cells revealed shared expression of gene groups between HLCs and human primary hepatocytes (hpHeps) that were not observed between HepG2 and hpHeps. In addition, bioinformatics analysis of gene expression data placed HLCs between the HepG2 cell line and hpHeps and distant from hnMSCs. The enhanced hepatic differentiation observed was supported by the presence of the hepatic drug transporters OATP-C and MRP-2 and gene expression of the hepatic markers CK18, TAT, AFP, ALB, HNF4A and CEBPA; and by their ability to display stable UGT-, EROD-, ECOD-, CYP1A1-, CYP2C9- and CYP3A4-dependent activities at levels either comparable with or even higher than those observed in primary hepatocytes and HepG2 cells. Overall, an improvement of the hepatocyte-like phenotype was achieved for an extended culture time suggesting a role of the epigenetic modifiers in hepatic differentiation and maturation and presenting hnMSC-HLCs as an advantageous alternative for drug discovery and in vitro toxicology testing.
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Affiliation(s)
- M Cipriano
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - J C Correia
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - S P Camões
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - N G Oliveira
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - P Cruz
- ECBio S.A., Amadora, Portugal
| | - H Cruz
- ECBio S.A., Amadora, Portugal
| | - M Castro
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - J L Ruas
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | | | - J P Miranda
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal.
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Aguiam DE, Silva A, Bobkov V, Carvalho PJ, Carvalho PF, Cavazzana R, Conway GD, D'Arcangelo O, Fattorini L, Faugel H, Fernandes A, Fünfgelder H, Gonçalves B, Guimarais L, De Masi G, Meneses L, Noterdaeme JM, Pereira RC, Rocchi G, Santos JM, Tuccillo AA, Tudisco O. Implementation of the new multichannel X-mode edge density profile reflectometer for the ICRF antenna on ASDEX Upgrade. Rev Sci Instrum 2016; 87:11E722. [PMID: 27910673 DOI: 10.1063/1.4961558] [Citation(s) in RCA: 5] [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] [Indexed: 06/06/2023]
Abstract
A new multichannel frequency modulated continuous-wave reflectometry diagnostic has been successfully installed and commissioned on ASDEX Upgrade to measure the plasma edge electron density profile evolution in front of the Ion Cyclotron Range of Frequencies (ICRF) antenna. The design of the new three-strap ICRF antenna integrates ten pairs (sending and receiving) of microwave reflectometry antennas. The multichannel reflectometer can use three of these to measure the edge electron density profiles up to 2 × 1019 m-3, at different poloidal locations, allowing the direct study of the local plasma layers in front of the ICRF antenna. ICRF power coupling, operational effects, and poloidal variations of the plasma density profile can be consistently studied for the first time. In this work the diagnostic hardware architecture is described and the obtained density profile measurements were used to track outer radial plasma position and plasma shape.
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Affiliation(s)
- D E Aguiam
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - A Silva
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - V Bobkov
- Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany
| | - P J Carvalho
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - P F Carvalho
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - R Cavazzana
- Consorzio RFX (CNR, ENEA, INFN, Universitá di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy
| | - G D Conway
- Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany
| | - O D'Arcangelo
- ENEA, Dipartimento FSN, C. R. Frascati, Via E. Fermi 45, 00044 Frascati, Roma, Italy
| | - L Fattorini
- Universitá degli Studi Milano Bicocca, Dipartimento di Fisica, Piazza della Scienza 3, 20126 Milano, Italy
| | - H Faugel
- Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany
| | - A Fernandes
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - H Fünfgelder
- Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany
| | - B Gonçalves
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - L Guimarais
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - G De Masi
- Consorzio RFX (CNR, ENEA, INFN, Universitá di Padova, Acciaierie Venete SpA), Corso Stati Uniti 4, 35127 Padova, Italy
| | - L Meneses
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - J M Noterdaeme
- Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany
| | - R C Pereira
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - G Rocchi
- ENEA, Dipartimento FSN, C. R. Frascati, Via E. Fermi 45, 00044 Frascati, Roma, Italy
| | - J M Santos
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - A A Tuccillo
- ENEA, Dipartimento FSN, C. R. Frascati, Via E. Fermi 45, 00044 Frascati, Roma, Italy
| | - O Tudisco
- ENEA, Dipartimento FSN, C. R. Frascati, Via E. Fermi 45, 00044 Frascati, Roma, Italy
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Ramos JC, Palma PJ, Nascimento R, Caramelo F, Messias A, Vinagre A, Santos JM. 1-year In Vitro Evaluation of Tooth Discoloration Induced by 2 Calcium Silicate–based Cements. J Endod 2016; 42:1403-7. [DOI: 10.1016/j.joen.2016.06.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/03/2016] [Accepted: 06/16/2016] [Indexed: 10/21/2022]
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Sennoune SR, Santos JM, Hussain F, Martínez-Zaguilán R. Sodium calcium exchanger operates in the reverse mode in metastatic human melanoma cells. Cell Mol Biol (Noisy-le-grand) 2015; 61:40-49. [PMID: 26567603] [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] [Received: 09/15/2015] [Accepted: 10/25/2015] [Indexed: 06/05/2023]
Abstract
Cytosolic Ca2+ ([Ca2+]cyt) is important in the regulation of several cellular functions involved in metastasis. We hypothesize that distinct [Ca2+]cyt regulation explains the acquisition of a more metastatic phenotype. To test this hypothesis, we used highly and lowly metastatic human melanoma cells and [Ca2+]cyt was monitored using Fura—2AM and fluorescence spectroscopy. Stimulation with ATP elicited a sustained increase in [Ca2+]cyt in highly metastatic cells, but a transient increase in lowly metastatic cells. Na+ substitution revealed Na+/Ca2+ exchanger (NCX) activity in reverse mode in highly, but not in lowly metastatic cells. In highly metastatic cells, addition of Na+ in the plateau phase of [Ca2+]cyt increase elicited with ATP, in the absence of Na+, resulted in a rapid return to basal, indicating that NCX can operate in both reverse and forward modes. Inhibition and knockdown of NCX, using KB—R7943 and siRNA NCX—1 respectively, supported the significance of NCX in [Ca2+]cyt regulation in highly metastatic cells. Stimulation with UTP triggered a rapid increase in highly metastatic cells [Ca2+]cyt, but not in lowly metastatic cells suggesting that highly and lowly metastatic cells exhibit distinct purinergic receptors. These data indicate that following agonist—stimulation, NCX operates preferentially in the reverse mode to enable a sustained [Ca2+]cyt increase in highly metastatic cells. The forward mode of NCX operation to extrude Ca2+ is preferred in lowly metastatic cells. The acquisition of a more metastatic phenotype involves a switch in NCX activity from forward to reverse mode that is favorable to maintain elevated [Ca2+]cyt in response to agonist stimulation.
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Affiliation(s)
- S R Sennoune
- Texas Tech University Health Sciences Center Departments of Cell Physiology & Molecular Biophysics Lubbock USA
| | - J M Santos
- Texas Tech University Health Sciences Center Departments of Cell Physiology & Molecular Biophysics Lubbock USA
| | - F Hussain
- Texas Tech University Departments of Mechanical Engineering Lubbock USA
| | - R Martínez-Zaguilán
- Texas Tech University Health Sciences Center Departments of Cell Physiology & Molecular Biophysics Lubbock USA
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Carvalho MC, Santos JM, Brandão ML. Dorsal periaqueductal gray post-stimulation freezing is counteracted by neurokinin-1 receptor antagonism in the central nucleus of the amygdala in rats. Neurobiol Learn Mem 2015; 121:52-8. [PMID: 25883049 DOI: 10.1016/j.nlm.2015.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 01/13/2015] [Revised: 04/04/2015] [Accepted: 04/06/2015] [Indexed: 10/23/2022]
Abstract
Electrical stimulation of the dorsal periaqueductal gray (dPAG) in rats generates defensive responses that are characterized by freezing and escape behaviors, followed by post-stimulation freezing that resembles symptoms of panic attacks. dPAG post-stimulation freezing involves the processing of ascending aversive information to prosencephalic centers, including the amygdala, which allows the animal to evaluate the consequences of stressful situations. The basolateral nucleus of the amygdala (BLA) is thought to act as a filter for innate and learned aversive information that is transmitted to higher structures. The central (CeA) and medial (MeA) nuclei of the amygdala constitute an output for the expression of fear reactions through projections to limbic and brainstem regions. Neurokinin (NK) receptors are abundant in the CeA, MeA, and BLA, but their role in the expression of defensive responses and processing of aversive information that is evoked by electrical stimulation of the dPAG is still unclear. In the present study, we examined the role of NK1 receptors in these amygdala nuclei in the expression of defensive responses induced by electrical stimulation of the dPAG in rats and fear memory of this aversive stimulation. Rats were implanted with an electrode into the dPAG for electrical stimulation and one cannula in the CeA, MeA, or BLA for injections of vehicle (phosphate-buffered saline) or the NK1 receptor antagonist spantide (SPA; 100 pmol/0.2 μl). Injections of SPA into the CeA but not BLA or MeA reduced the duration of post-stimulation freezing evoked by electrical stimulation of the dPAG, without changing the aversive thresholds of freezing or escape. Twenty-four hours later, exploratory behavior was evaluated in the elevated plus maze test (EPM) in the CeA group of rats. Electrical stimulation of the dPAG rats that received vehicle exhibited higher aversion to the open arms of the EPM than sham rats that did not receive any dPAG stimulation. SPA injections into the CeA prevented the proaversive effects of electrical stimulation of the dPAG assessed in the EPM 24 h later. The present results suggest that neurokininergic modulation via NK1 receptors in the CeA but not BLA or MeA is involved in the processing of aversive information derived from dPAG stimulation. The long-lasting consequences of electrical stimulation of the dPAG may be prevented by NK1 receptor antagonism in the CeA.
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Affiliation(s)
- M C Carvalho
- Instituto de Neurociências e Comportamento, Campus USP, Ribeirão Preto, SP, Brazil; Laboratório de Neuropsicofarmacologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - J M Santos
- Instituto de Neurociências e Comportamento, Campus USP, Ribeirão Preto, SP, Brazil; Faculdade de Educação Física e Fisioterapia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - M L Brandão
- Instituto de Neurociências e Comportamento, Campus USP, Ribeirão Preto, SP, Brazil; Laboratório de Neuropsicofarmacologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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Todaro AR, Nascimento VX, Souza NCC, Silva PP, Santos JM, Ramalho EAVF, Melo TVC, Silva ISM, Lins Júnior GS, Bastos MLA, Farias DF, Souza PCV, Carvalho AFU, Silva MCS, Almeida RMRG, Ramalho Neto E. Genetic variability in the ITS and IGS regions of the ribosomal DNA of Acremonium cavaraeanum exhibiting antimicrobial activity. Genet Mol Res 2013; 12:6983-95. [PMID: 24391056 DOI: 10.4238/2013.december.20.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Endophytic microorganisms represent promising alternatives for obtaining new drugs of biotechnological importance. In this study, the endophytic species Acremonium cavaraeanum (A1a) isolated from Cocos nucifera was cultivated for the production of secondary metabolites, and its extracts and fractions were evaluated by the dilution method (MIC). The EtOAc extracts and MeOH fractions were tested against Gram-positive and -negative bacteria, and had an MIC of 125 µg/mL when evaluated in the EtOAc extract (EBI). The EtOAc extract (EBII) had an MIC of 62.25 µg/mL for Staphylococcus aureus and an MIC between 125 and 250 µg/mL for Gram-negative bacteria. The methanolic fractions showed activity with MIC between 125 and 250 µg/mL for all bacteria tested. The IGS region of the rDNA repeat unit of genomic DNA was analyzed by PCR/RFLPs, including endonucleases PstI, BamHII, HinfI, and EcoRI. The physical maps showed different restriction sites for the 6 Acremonium sp isolates, and revealed 5 RFLP patterns. The results showed that isolates of the same Acremonium species exhibited variation in this specific region. The sequences of ITS1-5.8S-ITS2 regions were aligned by Clustal W using the neighbor joining method, which grouped the isolates into 5 distinct clusters. This study aimed to evaluate the genetic diversity of A. cavaraeanum crops exhibiting antibacterial activity. The results of this study indicate that different fungal genetic isolates have biotechnological potential for the production of active bio-compounds against several human pathogens.
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Affiliation(s)
- A R Todaro
- Laboratório de Genética Molecular, Genômica e Proteômica, Centro de Ciências Agrárias, Campus Delza Gitaí, Universidade Federal de Alagoas, Rio Largo, AL, Brasil
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Miqueleiz E, Lostao L, Ortega P, Santos JM, Astasio P, Regidor E. Trends in the prevalence of childhood overweight and obesity according to socioeconomic status: Spain, 1987-2007. Eur J Clin Nutr 2013; 68:209-14. [PMID: 24346475 DOI: 10.1038/ejcn.2013.255] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 09/30/2013] [Accepted: 10/28/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES To ascertain trends in the prevalence of overweight and obesity among Spanish children and adolescents according to the socioeconomic status of the family household and area of residence across the period 1987-2007. SUBJECTS/METHODS For study purposes, data were drawn from the 1987, 1995, 1997, 2001 and 2007 Spanish National Health Surveys. Overweight and obesity were estimated on the basis of body mass index. The following indicators of socioeconomic status were used: educational level of primary household earner and per capita income of province of residence. The statistical significance of the trend in the prevalence of overweight and obesity was assessed for each category of socioeconomic status. The χ2 test for trend was used in the case of educational level and a linear regression in the case of per capita income of province of residence. RESULTS Although the prevalence of overweight and obesity had levelled off among boys and girls aged 5 to 9 years, it nevertheless showed a significant upward trend among those aged 10 to 15 years from families whose primary household earner had a lower educational level. The prevalence of overweight among boys in this last group was 13.1% in 1987 and 31.5% in 2007. From 1997 onwards, the prevalence of overweight and obesity among boys and girls aged 10 to 15 years increased in both the richest and the remaining provinces, although the magnitude of this increase was greater in the latter. Specifically, in these provinces the prevalence increased from 18 to 28.9% over the period of study. CONCLUSIONS The prevalence of overweight and obesity in the childhood population in Spain has stabilised, except among adolescents, whether from lower-income families or lower-income areas, among whom a rising trend is in evidence.
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Affiliation(s)
- E Miqueleiz
- Department of Sociology, Sociology of Health, Faculty of Medicine, Universidad Pública de Navarra, Pamplona, Spain
| | - L Lostao
- Department of Sociology, Sociology of Health, Faculty of Medicine, Universidad Pública de Navarra, Pamplona, Spain
| | - P Ortega
- Department of Preventive Medicine and Public Health, Universidad Complutense de Madrid, Madrid, Spain
| | - J M Santos
- Department of Preventive Medicine and Public Health, Universidad Complutense de Madrid, Madrid, Spain
| | - P Astasio
- Department of Preventive Medicine and Public Health, Universidad Complutense de Madrid, Madrid, Spain
| | - E Regidor
- 1] Department of Preventive Medicine and Public Health, Universidad Complutense de Madrid, Madrid, Spain [2] CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
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Carvalho MC, Santos JM, Bassi GS, Brandão ML. Participation of NK1 receptors of the amygdala on the processing of different types of fear. Neurobiol Learn Mem 2013; 102:20-7. [PMID: 23567110 DOI: 10.1016/j.nlm.2013.03.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 03/06/2013] [Accepted: 03/11/2013] [Indexed: 10/27/2022]
Abstract
The amygdala, medial hypothalamus, dorsal periaqueductal gray (dPAG), superior and inferior colliculus together constitutes the encephalic aversion system which has been considered the main neural substrate for the integration of unconditioned aversive behavioral states. Within the amygdala the basolateral nucleus (BLA) is thought to act as a filter for innate and learned aversive information to higher structures, whereas the central nucleus (CeA) is considered the main output for the expression of fear reactions through projections to limbic and brainstem regions. Although neurokinin (NK) receptors are abundant in the amygdala, their role in the processing and expression of fear is yet unclear. In this study, we examined the role of SP/NK1 receptor system of the CeA and BLA on the expression of defensive responses elaborated by Wistar rats submitted to elevated plus maze (EPM) and to electrical stimulation (ES) of the dPAG. For EPM test, cannulae were implanted in the CeA and BLA for injections of substance P (SP - 10 and 100pmol/0.2μL) and spantide (SPA - 10, 100 and 500pmol/0.2μL). For ES of dPAG, aversive thresholds for freezing and escape responses as well as post-stimulation freezing (PSF) were measured in rats treated with PBS and SPA (100pmol/0.2μL) in CeA. Injections of SP into the CeA, but not the BLA, produced anxiogenic-like effects in the EPM test. SPA injected into the CeA had no effect on the exploratory behavior of rats submitted to the EPM but blocked the effects of SP. The duration of dPAG-PSF was also reduced significantly following injection of SPA in CeA but had no effect on thresholds for freezing and escape responses. The EPM gives the animal a control over its environment i.e. the option to choose or not to enter into the open arm and dPAG-PSF is thought to reflect a period when the animal evaluates the significance of dPAG-evoked aversion once the unconditioned responses of freezing and escape were elicited. The data indicate that SP may be involved in mediating responses of the animal in only certain types of aversive behavior and suggests a differential participation of the NK1 receptors in the processing of distinct types of fear in the amygdala.
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Affiliation(s)
- M C Carvalho
- Instituto de Neurociências e Comportamento, Campus USP, Ribeirão Preto, SP, Brazil.
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Mazzola P, Cruz AA, Santos JM, Rodrigues AT, Silva NMO, Silva AER, Carvalho RP, Teixeira LC. OHP-003 Adherence and Drug-Related Problems in Breast Cancer Patients on Oral Endocrine Therapy. Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.377] [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: 11/03/2022] Open
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Cardoso M, Marques RF, Lopes MF, Cabrita AS, Santos JM. In vivo biocompatibility of Resilon compared with gutta-percha in a pre-clinical model. Dent Res J (Isfahan) 2013; 10:652-8. [PMID: 24348625 PMCID: PMC3858742] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate in vivo biocompatibility of Resilon, compared with gutta-percha, at short and long-term following implantation in a rat subcutaneous implantation model. MATERIALS AND METHODS Male Wistar rats were implanted subcutaneously with either Resilon or gutta-percha or were sham controls. Tissues were harvested at 8 days or 60 days after implantation and were evaluated histologically for inflammation and fibrous encapsulation. The severity of histologic injury, scored on a scale of 0-4 and quantitative analysis of the capsule wall thickness were determined for statistical analysis. Data were analyzed by Student t-test, one-way analysis of variance, Kruskal-Wallis or Mann-Whitney's tests as appropriate. A value of P ≤ 0.05 was considered statistically significant. RESULTS No behavioral changes or visible signs of physical impairment were observed at 8 days or 60 days post-implantation. Histopathologic observation of the implanted sites at each time-point showed that both Resilon and gutta-percha implants induced foreign body reaction, showing minimal to mild inflammatory reactions in most cases, which diminished significantly with time. Compared with gutta-percha, the capsule wall was thinner (P < 0.05) after Resilon implantation at day 8 and significantly (P = 0.01) thicker at day 60. In addition, capsule wall thickness showed a trend to increase with time after implantation in the Resilon groups (P < 0.05), opposed to the significant decrease (P = 0.016) observed after implantation in the gutta-percha groups, suggesting lesser long-term biocompatibility of Resilon. CONCLUSION Our findings validate Resilon as an in vivo biocompatible material. However, our data suggest that long-term biocompatibility of Resilon, despite validated, is inferior to that of gutta-percha control.
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Affiliation(s)
- Miguel Cardoso
- Department of Experimental Pathology, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal,Address for correspondence: Dr. Miguel Cardoso, Centro Médico de Tondela, Rua Comandante João de Matos Ferreira, no 88, 3460-549 Tondela, Portugal. E-mail:
| | - Rodrigo F Marques
- Department of Experimental Pathology, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal
| | - Maria Francelina Lopes
- Department of Experimental Surgery, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal
| | - António S Cabrita
- Department of Experimental Pathology, Faculty of Medicine of the University of Coimbra, Rua Larga, 3004-504, Portugal
| | - João Miguel Santos
- Department of Dental Medicine, Stomatology and Maxillofacial Surgery, Faculty of Medicine of the University of Coimbra, Av. Bissaya Barreto, 3030-005, Coimbra, Portugal
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Hecimovic H, Santos JM, Carter J, Attarian HP, Fessler AJ, Vahle V, Gilliam F. Depression but not seizure factors or quality of life predicts suicidality in epilepsy. Epilepsy Behav 2012; 24:426-9. [PMID: 22683245 PMCID: PMC3408833 DOI: 10.1016/j.yebeh.2012.05.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Revised: 05/03/2012] [Accepted: 05/04/2012] [Indexed: 11/28/2022]
Abstract
The objective of this study was to determine prevalence and predictive risk factors of suicidality in a large sample of epilepsy outpatients. We prospectively examined 193 consecutive adult epilepsy outpatients for depression, including suicidal ideation. Demographic and epilepsy factors, medication toxicity and health-related quality of life were also evaluated. The prevalence of suicidal ideation within the past two weeks was 11.9%. Although medication toxicity, health-related quality of life and BDI scores were each associated with suicidal ideation in the bivariate analyses, only the BDI remained significant in the logistic regression analysis. About one-fourth of the subjects with suicidal ideation had no significant symptoms of depression. Recent thoughts of suicide are a common occurrence in the outpatient epilepsy clinic setting, but these are not predicted by gender, age, seizure factors, medication toxicity or self-perceived quality of life. Although depression is associated with suicidal ideation, about one-fourth of the suicidal subjects were euthymic or only mildly depressed.
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Affiliation(s)
- H Hecimovic
- Department of Neurology, University Hospital, Zagreb, Croatia.
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Gajjar DU, Pal AK, Santos JM, Ghodadra BK, Vasavada AR. Severe pigmented keratitis caused by Cladorrhinum bulbillosum. Indian J Med Microbiol 2011; 29:434-7. [DOI: 10.4103/0255-0857.90191] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ortiz T, Poch-Broto J, Requena C, Santos JM, Martínez A, Barcia-Albacar JA. [Brain neuroplasticity in occipital areas in blind teenagers]. Rev Neurol 2010; 50 Suppl 3:S19-S23. [PMID: 20200843] [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: 05/28/2023]
Abstract
INTRODUCTION AND DEVELOPMENT Neuroplasticity is a process by which neurons increase their connectivity with other neurons in a stable fashion as a consequence of experience, learning and both sensitive and cognitive stimulation. Different authors have shown a huge process of brain plasticity in blind subjects towards other sensorial areas, mainly auditive and visual ones. From an anatomical standpoint many data show significant differences in blind subjects brains, mainly in visual pathways and structures as a result of lack of activity on those areas. This brings a lesser neuroplasticity and, therefore, a decrease in structural volumes. They have also found differences in subcortical structures volumes related to vision, such as splenium or corpus callosum istmus. METHODOLOGY An adolescent was administered passive tactile stimulation with an 1,500 taxels stimulator. This was carried out daily for an hour, for three months, and stimulation consisted of vertical, horizontal and oblique lines. The results obtained in an adolescent indicate a clear progression of EEG activity from tactile sensory parietal areas to visual occipital ones as stimulation progresses. CONCLUSION Therefore one can speculate if systematic and organized repetition of tactile stimuli in blind subjects leads to a greater neuroplasticity which expands towards occipital areas, largely responsible for human vision.
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Affiliation(s)
- T Ortiz
- Departamento de Psiquiatría, Universidad Complutense, Madrid, Espana.
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Affiliation(s)
- R Zakout
- Department of Medicine 2, University Hospital Santa Maria/Faculty of Medicine of Lisbon, 1649-350 Lisbon, Portugal
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Fintelman-Rodrigues N, Corrêa JC, Santos JM, Pimentel MMG, Santos-Rebouças CB. Investigation of CBS, MTR, RFC-1 and TC polymorphisms as maternal risk factors for Down syndrome. Dis Markers 2009; 26:155-61. [PMID: 19729796 PMCID: PMC3833707 DOI: 10.3233/dma-2009-0626] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Recent evidence shows that almost 92% of the DS children are born from young mothers, suggesting that other risk factors than advanced maternal age must be involved. In this context, some studies demonstrated a possible link between DS and maternal polymorphisms in genes involved in folate metabolism. These polymorphisms, as well as low intake of folate could generate genomic instability, DNA hypomethylation and abnormal segregation, leading to trisomy 21. We compared the frequency of CBS 844ins68, MTR 2756A>G, RFC-1 80G> A and TC 776C>G polymorphisms among 114 case mothers and 110 matched controls, in order to observe whether these variants act as risk factors for DS. The genotype distributions revealed that there were not significant differences between both samples. However, when we proceed the multiplicative interaction analyses between the four polymorphisms described above together with the previously studied MTHFR 677C>T, MTHFR 1298A>C and MTRR 66A>G polymorphisms, our results show that the combined genotype TC 776CC / MTHFR 677TT and TC 776CC / MTR 2756AG were significantly higher in the control sample. Nevertheless, there was no significant association after Bonferroni correction. Our results suggest that maternal folate-related polymorphisms studied here have no influence on trisomy 21 susceptibility in subjects of Brazilian population.
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Affiliation(s)
- N Fintelman-Rodrigues
- Departamento de Genética, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
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Alberto MLV, Trujillo HAG, Riveros ACG, Lima EB, Miglino MA, Santos JM. Bovine meroanencephaly and gastroschisis: a macro and microscopic study. Anat Histol Embryol 2007; 37:192-5. [PMID: 18162096 DOI: 10.1111/j.1439-0264.2007.00826.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Congenital malformations correspond to one of the main causes of embryonic loss during the gestational process. They result from interaction of several factors such as multifactor heredity, chromosomal and genetic alterations and environmental agents; however, unknown aetiology also can be present. In this article, we have used 10 embryos, from a frigorific area of Dracena, SP, Brazil, which were fixed in Bouin solution for a macro- and micro-scopic description. We could verify the presence of an encephalic tissue mass on the embryo's dorsal cranial area, resulting from the non-formation of part of the cranial cap and from the non-closing of cephalic neuropore and consequent neuroepithelial cells disorganization. In the abdominal area, the embryos did not show the complete fusion of the body lateral pleats during the abdominal wall formation, and the liver extruded into the amniotic cavity without involvement of the intestine.
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Affiliation(s)
- M L V Alberto
- Medical College of Zootechny and Veterinary Medicine, Surgery Department, Section of Domestic and Wild Animals Anatomy USP/SP, 05508-270 SP, Brazil.
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Santos JM, Sá LM, Reis Júnior NC, Gonçalves RF, Siqueira RN. Modelling hydrogen sulphide emission in a WWTP with UASB reactor followed by aerobic biofilters. Water Sci Technol 2006; 54:173-80. [PMID: 17163055 DOI: 10.2166/wst.2006.861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Hydrogen sulphide (H2S) represents one of the main odorant gases emitted from wastewater treatment plants (WWTP) and a mathematical model can be a fast and low cost tool to estimate its emission. In this work H2S emission rates in a WWTP, composed of an up-flow anaerobic sludge blanket (UASB) reactor and an aerobic biofilter (BF), are estimated using four mathematical models available in the literature (AP-42, GPC, TOXCHEM + and WATER8). The results show that the GPC model leads to the best agreement with the experimental data, except for the biofilter due to its lack of capability to include biodegradation as a H2S removal process. On the other hand, the AP-42 and WATER8 models showed a slightly better ability to predict H2S removal in the biofilter than the TOXCHEM + model, as all models underestimate the H2S concentration decay.
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Affiliation(s)
- J M Santos
- Departamento de Engenharia Ambiental, Universidade Federal do Espirito Santo, Caixa Postal 01-9011, CEP 29060-970, Vitória (ES), Brazil.
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Soares RLS, Figueiredo HN, Maneschy CP, Rocha VRS, Santos JM. Correlation between symptoms of the irritable bowel syndrome and the response to the food extract skin prick test. Braz J Med Biol Res 2004; 37:659-62. [PMID: 15107926 DOI: 10.1590/s0100-879x2004000500005] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [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: 01/27/2023] Open
Abstract
The relationship between the irritable bowel syndrome (IBS) and food intolerance is not clear. We studied the cutaneous response to food antigens in 43 volunteers who were students and employees of the Faculty of Medicine of Universidade Federal Fluminense. Subjects were divided into 3 groups after evaluation for Roma II criteria for functional disease of the gastrointestinal tract: group I, 14 volunteers with IBS; group II, 15 volunteers with functional dyspepsia; group III, 14 volunteers without habitual gastrointestinal symptoms. The subjects were submitted to the skin prick test with 9 food antigen extracts, for a total of 387 skin tests (9 per volunteer). Of the 126 tests applied to group I, 24 (19.4%) were positive (a 3-mm wider papule than the negative control) and of the 135 tests applied to group II, 3 (2.3%) were positive. Of the 126 tests applied to group III, 6 (4%) were positive. The number of positive responses obtained in group I (IBS) differed significantly from the other 2 groups (P < 0.01). None of the volunteers with IBS reported intolerance to any isolated food. The higher reactivity to food antigens in group I compared to groups II and III suggests that intestinal permeability may be increased in patients with IBS.
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Affiliation(s)
- R L S Soares
- Grupo de Estudo de Doenças Intestinais, Departamento de Medicina Clínica, Faculdade de Medicina, Universidade Federal Fluminense, Niteroi, RJ, Brazil.
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Rego F, Alcântara P, Buinho F, Araújo F, Santos JM, Parreira A, da Costa FL. Autologous peripheral stem cell transplantation for multiple myeloma in a patient with a 10 year-old kidney transplant: case report and clinical issues. Transplant Proc 2003; 35:1102-4. [PMID: 12947876 DOI: 10.1016/s0041-1345(03)00326-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- F Rego
- Renal Transplant Unit of Cruz Vermelha Portuguesa Hospital, R. Duarte Galvão, 54, 1549 008, Lisboa, Portugal
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Martínez-Marcos FJ, García-Garmendia JL, Ortega-Carpio A, Fernández-Gómez JM, Santos JM, Camacho C. Comparison of intravenous flecainide, propafenone, and amiodarone for conversion of acute atrial fibrillation to sinus rhythm. Am J Cardiol 2000; 86:950-3. [PMID: 11053705 DOI: 10.1016/s0002-9149(00)01128-0] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In a prospective, single-blind trial, we randomized 150 consecutive symptomatic patients with acute (< or = 48 hours' duration) atrial fibrillation to receive intravenous flecainide, propafenone, or amiodarone. Flecainide and propafenone were administered as a bolus dose of 2 mg/kg in 20 minutes. A second bolus dose of 1 mg/kg in 20 minutes was administered if conversion to sinus rhythm was not achieved after 8 hours. Amiodarone was administered as a bolus of 5 mg/kg in 20 minutes followed by a continuous infusion of 50 mg/hour. By the end of a 12-hour observation period, conversion to sinus rhythm was achieved in 45 patients (90%) in the flecainide group, 36 (72%) in the propafenone group, and 32 (64%) in the amiodarone group (p = 0.008 for the overall comparison, p = 0.002 for flecainide vs amiodarone, p = 0.022 for flecainide vs propafenone, and p = 0.39 for propafenone vs amiodarone). When compared with amiodarone, this higher reversion rate with flecainide was present from the first hour of the study period. However, only after administering the second bolus was there a significant difference between flecainide and propafenone. Median time to conversion to sinus rhythm was different among groups (p < 0.001), and it was lower in the flecainide (25 minutes; range 4 to 660) and propafenone (30 minutes; range 10 to 660) groups than in the amiodarone group (333 minutes; range 15 to 710; p < 0.001 for both comparisons). Flecainide, at the doses administered in this study, is more effective than propafenone and amiodarone for conversion of acute atrial fibrillation to sinus rhythm. Propafenone and amiodarone have similar conversion rates, although propafenone was faster in achieving the conversion to sinus rhythm.
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Affiliation(s)
- F J Martínez-Marcos
- Servicio de Cuidados Críticos-Urgencias, Hospital Juan Ramón Jiménez, Huelva, Spain.
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Lopes SA, Ribeiro DM, Roberto PG, França SC, Santos JM. Nicotiana tabacum as an Experimental Host for the Study of Plant-Xylella fastidiosa Interactions. Plant Dis 2000; 84:827-830. [PMID: 30832132 DOI: 10.1094/pdis.2000.84.8.827] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Xylella fastidiosa causes citrus variegated chlorosis (CVC). Information generated from the X. fastidiosa genome project is being used to study the underlying mechanisms responsible for pathogenicity. However, the lack of an experimental host other than citrus to study plant-X. fastidiosa interaction has been an obstacle to accelerated progress in this area. We present here results of three experiments that demonstrated that tobacco could be an important experimental host for X. fastidiosa. All tobacco plants inoculated with a citrus strain of X. fastidiosa expressed unequivocal symptoms, consisting of orange leaf lesions, approximately 2 months after injection of the pathogen. CVC symptoms were observed in citrus 3 to 6 months after inoculation. The pathogen was readily detected in symptomatic tobacco plants by polymerase chain reaction (PCR) and phase contrast microscopy. In addition, X. fastidiosa was reisolated on agar plates in 4 of 10 plants. Scanning electron microscopy analysis of cross sections of stems and petioles revealed the presence of rod shaped bacteria restricted to the xylem of inoculated plants. The cell size was within the limit typical of X. fastidiosa.
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Affiliation(s)
- S A Lopes
- UNAERP, Dep. Biotecnologia Vegetal, Av. Costábile Romano, 2201, Ribeirão Preto, SP
| | - D M Ribeiro
- UNAERP, Dep. Biotecnologia Vegetal, Av. Costábile Romano, 2201, Ribeirão Preto, SP
| | - P G Roberto
- UNAERP, Dep. Biotecnologia Vegetal, Av. Costábile Romano, 2201, Ribeirão Preto, SP
| | - S C França
- UNAERP, Dep. Biotecnologia Vegetal, Av. Costábile Romano, 2201, Ribeirão Preto, SP
| | - J M Santos
- FCAV, UNESP, Rod. Carlos Tonanni, Km 5, Jaboticabal, SP, Brazil
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Abstract
To reduce the scan time of time of flight or phase contrast angiography sequences, fast three-dimensional k-space trajectories can be employed. The best 3D trajectory depends on tolerable scan time, readout time, geometric flexibility, flow/motion properties and others. A formalism for flow/motion sensitivity comparison based on the velocity k-space behavior is presented. It consists in finding the velocity k-space position as a function of the spatial k-space position. The trajectories are compared graphically by their velocity k-space maps, with simulations and with an objective computed index. The flow/motion properties of various 3D trajectories (cones, spiral-pr hybrid, spherical stack of spirals, 3DFT, 3D echo-planar, and shells) were determined. In terms of flow/motion sensitivity the cones trajectory is the best, however, it is difficult to use it for anisotropic resolutions or fields of view. Tolerating more flow sensitivity, the stack of spirals trajectory offers more geometric flexibility.
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Affiliation(s)
- P Irarrázaval
- Departamento de Ingeniería Eléctrica, Pontificia Universidad Católica de Chile, Santiago.
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