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Wunderlich syndrome as a rare complication of polyarteritis nodosa: a case report. Reumatismo 2024; 76. [PMID: 38523579 DOI: 10.4081/reumatismo.2024.1669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/02/2024] [Indexed: 03/26/2024] Open
Abstract
Spontaneous subcapsular and perirenal hemorrhage, known as Wunderlich syndrome (WS), is a rare clinical manifestation of polyarteritis nodosa (PAN). We report a case of a 48-year-old male with a history of recurrent episodes of leg muscle tenderness and dysesthesia, bilateral flank pain, painful nodular skin lesions in the lower limbs, weight loss, and difficult-to-control arterial hypertension. The abdominopelvic computed tomography angiography showed a large left perirenal hematoma, leading to the patient's admission to the intensive care unit. After the exclusion of infectious or neoplastic foci, the patient was diagnosed with PAN and started intravenous methylprednisolone pulses with a good response. Since WS is a rare initial clinical manifestation of PAN, an early diagnosis and aggressive treatment will significantly improve clinical outcomes.
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Modulation of the functional interfaces between retroviral intasomes and the human nucleosome. mBio 2023; 14:e0108323. [PMID: 37382440 PMCID: PMC10470491 DOI: 10.1128/mbio.01083-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 05/16/2023] [Indexed: 06/30/2023] Open
Abstract
Infection by retroviruses as HIV-1 requires the stable integration of their genome into the host cells. This process needs the formation of integrase (IN)-viral DNA complexes, called intasomes, and their interaction with the target DNA wrapped around nucleosomes within cell chromatin. To provide new tools to analyze this association and select drugs, we applied the AlphaLISA technology to the complex formed between the prototype foamy virus (PFV) intasome and nucleosome reconstituted on 601 Widom sequence. This system allowed us to monitor the association between both partners and select small molecules that could modulate the intasome/nucleosome association. Using this approach, drugs acting either on the DNA topology within the nucleosome or on the IN/histone tail interactions have been selected. Within these compounds, doxorubicin and histone binders calixarenes were characterized using biochemical, in silico molecular simulations and cellular approaches. These drugs were shown to inhibit both PFV and HIV-1 integration in vitro. Treatment of HIV-1-infected PBMCs with the selected molecules induces a decrease in viral infectivity and blocks the integration process. Thus, in addition to providing new information about intasome-nucleosome interaction determinants, our work also paves the way for further unedited antiviral strategies that target the final step of intasome/chromatin anchoring. IMPORTANCE In this work, we report the first monitoring of retroviral intasome/nucleosome interaction by AlphaLISA. This is the first description of the AlphaLISA application for large nucleoprotein complexes (>200 kDa) proving that this technology is suitable for molecular characterization and bimolecular inhibitor screening assays using such large complexes. Using this system, we have identified new drugs disrupting or preventing the intasome/nucleosome complex and inhibiting HIV-1 integration both in vitro and in infected cells. This first monitoring of the retroviral/intasome complex should allow the development of multiple applications including the analyses of the influence of cellular partners, the study of additional retroviral intasomes, and the determination of specific interfaces. Our work also provides the technical bases for the screening of larger libraries of drugs targeting specifically these functional nucleoprotein complexes, or additional nucleosome-partner complexes, as well as for their characterization.
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Is a course of Intermittent Self-Dilatation (ISD) with topical corticosteroids superior at stabilising urethral stricture disease in men and improving functional outcomes over a course of ISD alone? A systematic review and meta-analysis. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)01051-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Outcomes of primary surgical treatment in advanced peyronie’s disease: A multi-institutional study. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00877-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Impact de l’infection par le SARS-CoV-2 sur l’activité de la maladie des patients atteints de rhumatisme psoriasique sous bDMARD : données réelles. REVUE DU RHUMATISME (ED. FRANCAISE : 1993) 2022. [PMCID: PMC9758747 DOI: 10.1016/j.rhum.2022.10.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Introduction L’infection par le SARS-CoV-2 peut entraîner une inflammation sévère et il a été suggéré d’induire des poussées de rhumatisme psoriasique (RP). Cependant, l’impact sur l’activité de la maladie et la réponse aux DMARD biologiques modificateurs de la maladie (bDMARD) reste inconnu. Patients et méthodes Nous avons réalisé une analyse rétrospective incluant tous les patients atteints de RP, répondant aux critères CASPAR et sous biothérapie, suivis dans le service de rhumatologie d’un CHU universitaire tertiaire. Les données démographiques et cliniques, y compris la survenue d’une infection par le SARS-CoV-2, ont été collectées à partir de notre base de données nationale (reuma.pt). L’activité de la maladie (CDAI, SDAI, DAS28 4v, BASDAI, ASDAS) et les réponses aux bDMARD (réponses EULAR, ASDAS, ASAS, ACR et PsARC) ont été évaluées avant et après l’infection par le SARS-Cov-2. Résultats Au total, 102 patients atteints de RP ont été inclus. Cinquante-deux étaient des femmes (51 %). L’âge moyen était de 53 ± 11,09 ans et la durée médiane de la maladie était de 15 ans [min 2, max 47]. Au total, 54 (53 %) patients avaient une atteinte axiale prédominante, 26 (26 %) périphérique et 36 (37 %) enthésopathique. Le bDMARD le plus utilisé était l’étanercept (n = 28, 27,5 %) suivi de l’adalimumab (n = 22, 21,6 %) et du sécukinumab (n = 18, 17,6 %). La prévalence de l’infection par le SARS-CoV-2 était de 15,7 % (n = 16). Soixante-trois pour cent ont reçu le vaccin BNT162b2 (Pfizer/BioNtech), 31 % ont reçu l’ARNm-1273 (Moderna), 13 % ont reçu l’AZD1222 (AstraZeneca) et 13 % ont reçu l’AD26.COV2.S (Janssen/Johnson & Johnson). Soixante-trois pour cent étaient infectés avant toute vaccination, 13 % après la première dose et 25 % après la seconde. Les symptômes les plus fréquents étaient l’anosmie (65 %), la dysgueusie (56 %) et la toux (56 %). Tous les patients se sont complètement remis de l’infection, sans nécessiter d’hospitalisation. Quel que soit le score utilisé, la différence entre l’activité moyenne de la maladie après l’infection par le SARS-CoV-2 et celle au départ n’a pas atteint la signification statistique. Au départ et après l’infection, les paramètres moyens de l’activité de la maladie étaient respectivement : CDAI 8,6 ± 5,7 vs 8,6 ± 5,7, p = 0,997 ; SDAI 9,3 ± 6,6 contre 9,2 ± 6,1, p = 0,928 ; DAS 28 4v 2,9 ± 1,2 contre 2,9 ± 1,2, p = 0,818 ; BASDAI 3,6 ± 2,6 contre 3,2 ± 2,7, p = 0,506 ; ASDAS 2,2 ± 1,2 contre 2,2 ± 1, p = 0,721. Le nombre de patients ne répondant pas aux bDMARD (selon EULAR, ASDAS, ASAS, ACR et PsARC) avant l’infection n’était pas différent de celui post-infection. Conclusion Notre étude suggère que l’infection par le SARS-CoV-2 n’a aucun impact négatif sur l’activité de la maladie PSA et les réponses bDMARD. Cependant, d’autres études sont encore nécessaires pour mieux comprendre les effets à long terme de l’infection par le SARS-CoV-2.
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McAninch penile circular skin flap urethroplasty: Do skin flaps still have a role in complex urethral strictures? EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)02079-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Is a course of Intermittent Self-Dilatation (ISD) with topical corticosteroids superior at stabilising urethral stricture disease in men and improving functional outcomes over a course of ISD alone? A systematic review and meta-analysis. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)02051-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Developing and validating high-value patient digital follow-up services: a pilot study in cardiac surgery. BMC Health Serv Res 2022; 22:680. [PMID: 35597936 PMCID: PMC9123610 DOI: 10.1186/s12913-022-08073-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 05/06/2022] [Indexed: 11/22/2022] Open
Abstract
Background The existing digital healthcare solutions demand a service development approach that assesses needs, experience, and outcomes, to develop high-value digital healthcare services. The objective of this study was to develop a digital transformation of the patients’ follow-up service after cardiac surgery, based on a remote patient monitoring service that would respond to the real context challenges. Methods The study followed the Design Science Research methodology framework and incorporated concepts from the Lean startup method to start designing a minimal viable product (MVP) from the available resources. The service was implemented in a pilot study with 29 patients in 4 iterative develop-test-learn cycles, with the engagement of developers, researchers, clinical teams, and patients. Results Patients reported outcomes daily for 30 days after surgery through Internet-of-Things (IoT) devices and a mobile app. The service’s evaluation considered experience, feasibility, and effectiveness. It generated high satisfaction and high adherence among users, fewer readmissions, with an average of 7 ± 4.5 clinical actions per patient, primarily due to abnormal systolic blood pressure or wound-related issues. Conclusions We propose a 6-step methodology to design and validate a high-value digital health care service based on collaborative learning, real-time development, iterative testing, and value assessment.
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Can biochemical endpoints improve the sensitivity of the biomonitoring strategy using bioassays with standard species, for water quality evaluation? ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 215:112151. [PMID: 33743402 DOI: 10.1016/j.ecoenv.2021.112151] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 03/08/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
The Water Framework Directive (WFD) was adopted in 2000 and is a common framework for water policy, management and protection in Europe. The WFD assesses specific parameters; however, it ignores indicators of ecosystem functioning and sub-individual performance. Reservoirs are strongly influenced by anthropogenic activities that promote their imbalance. Bioassays and biomarkers are useful tools to link the chemical, ecological and toxicological assessments in water quality assessments. These approaches can be complementary to WFD methodologies, allowing the detection of impacts on the ecosystem. This study evaluated if the biochemical parameters can improve the sensitivity of the biomonitoring strategy using bioassays with the standard species Daphnia magna, in the assessment of the ecological quality of water reservoirs. To this end, water samples of Portuguese reservoirs were analysed in three sampling periods (Autumn 2018 and Spring, Autumn 2019). In parallel, a physicochemical characterization of waters was performed. D. magna feeding rate assays were performed for 24 h. After exposure, metabolism, oxidative stress and lipid peroxidation biomarkers were evaluated. Feeding rate assays showed sensitivity to different reservoirs. Biomarkers showed a higher sensitivity and can therefore improve the sensitivity of the biomonitoring strategy using bioassays. Bioassays and biomarkers approach allowed to highlight potential sources of stress, more related to the quality of the seston than to chemical contamination. This work highlights the complementarity between bioassays and biomarkers to identify ecotoxicological effects of surface waters, and can be extremely useful, especially in cases where the biotic indices are difficult to establish, such as reservoirs.
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Comparative clinical prognosis of massive and non-massive pulmonary embolism: A registry-based cohort study. J Thromb Haemost 2021; 19:408-416. [PMID: 33119949 DOI: 10.1111/jth.15146] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/29/2020] [Accepted: 10/21/2020] [Indexed: 01/16/2023]
Abstract
AIMS Little is known about the prognosis of patients with massive pulmonary embolism (PE) and its risk of recurrent venous thromboembolism (VTE) compared with non-massive PE, which may inform clinical decisions. Our aim was to compare the risk of recurrent VTE, bleeding, and mortality after massive and non-massive PE during anticoagulation and after its discontinuation. METHODS AND RESULTS We included all participants in the RIETE registry who suffered a symptomatic, objectively confirmed segmental or more central PE. Massive PE was defined by a systolic hypotension at clinical presentation (<90 mm Hg). We compared the risks of recurrent VTE, major bleeding, and mortality using time-to-event multivariable competing risk modeling. There were 3.5% of massive PE among 38 996 patients with PE. During the anticoagulation period, massive PE was associated with a greater risk of major bleeding (subhazard ratio [sHR] 1.72, 95% confidence interval [CI] 1.28-2.32), but not of recurrent VTE (sHR 1.15, 95% CI 0.75-1.74) than non-massive PE. An increased risk of mortality was only observed in the first month after PE. After discontinuation of anticoagulation, among 11 579 patients, massive PE and non-massive PE had similar risks of mortality, bleeding, and recurrent VTE (sHR 0.85, 95% CI 0.51-1.40), but with different case fatality of recurrent PE (11.1% versus 2.4%, P = .03) and possibly different risk of recurrent fatal PE (sHR 3.65, 95% CI 0.82-16.24). CONCLUSION In this large prospective registry, the baseline hemodynamic status of the incident PE did not influence the risk of recurrent VTE, during and after the anticoagulation periods, but was possibly associated with recurrent PE of greater severity.
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IMAGEAMENTO IN VIVO DE CAMUNDONGOS TRANSPLANTADOS COM LEUCEMIA PROMIELOCÍTICA AGUDA (PML-RARα). Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.10.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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P-02-28 A Minimally Invasive Procedure in the Surgical Treatment of Peyronie's Disease: Short- and Mid-Term Results. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2020.04.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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P229 Primary cardiac angiosarcoma of the right atrium: a rare entity presenting with an atrial arrhythmia. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Primary cardiac tumors are rare entities and 75% are benign. Angiosarcoma is the most common malignant primary cardiac tumor.
We report the case of cardiac angiosarcoma presenting with an atrial arrhythmia.
Clinical case
A 39-year-old female patient with no past medical history presented to the emergency department with heart palpitations and atypical chest pain.
Electrocardiogram on admission showed atrial flutter with a heart rate of 153 beats per minute.
Laboratory analysis were performed showing elevated D-dimer levels (2210 ug/L).
A thoracic CT scan was performed, which ruled out pulmonary embolism, but showed multiple pulmonary nodules and a right atrial (RA) mass measuring 48 mm that could correspond to a thrombus or neoplasia.
The patient was admitted in the Cardiology ICU of our hospital and was started on beta-blocker and amiodarone with conversion to sinus rhythm. Additional exams were performed:
- Transthoracic echocardiogram (TTE) revealed an heterogenous 32,6 x 17,7 mm mass in the lateral wall of the RA with an adherent mobile mass near the tricuspid valve with 28 mm diameter (possible adherent thrombus).
- Cardiac magnetic resonance imaging confirmed a RA tumor with invasion of the atrial free wall and compression of the superior vena cava.
Due to the unclear etiology of the RA mass, ultrasound-guided intracardiac biopsy was performed. Pathological examination revealed spindle cell proliferation, consistent with the diagnosis of angiosarcoma. Immunohistochemical staining was positive for Vimentin, CD34 and CD31, with 70% Ki67 expression.
Later on, the patient developed melena with significant drop of hemoglobin levels, requiring daily red blood cell transfusions and anticoagulation had to be stopped.
The patient was transferred to the Internal Medicine ward and thoracic-abdomen-pelvis staging computed tomography (CT) scan showed a significant increase in the number of pulmonary nodules, bilateral ovarian masses, 4 hepatic nodules and ileum metastization.
During hospitalization, the patient developed right leg deep venous thrombosis and thoracic CT scan revealed bilateral pulmonary embolism.
After improvement of the clinical status, palliative chemotherapy was started and the patient was discharged, maintaining regular outpatient follow-up in the Oncology Department for 1 month.
Cardiac angiosarcoma generally presents in a late stage of the disease with metastatic involvement. When surgical treatment is not possible, despite agressive chemotherapy, the prognosis remains poor.
Abstract P229 Figure. Echocardiogram: right atrium mass
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Animal Models to Study Cancer and Its Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1219:389-401. [PMID: 32130710 DOI: 10.1007/978-3-030-34025-4_20] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cancers are complex tissues composed by genetically altered cancer cells and stromal elements such as inflammatory/immune cells, fibroblasts, endothelial cells and pericytes, neuronal cells, and a non-cellular component, the extracellular matrix. The complex network of interactions and crosstalk established between cancer cells and the supportig cellular and non-cellular components of the microenvironment are of extreme importance for tumor initiation and progression, strongly impacting the course and the outcome of the disease. Therefore, a better understanding of the tumorigenic processes implies the combined study of the cancer cell and the biologic, chemical and mechanic constituents of the tumor microenvironment, as their concerted action plays a major role in the carcinogenic pathway and is a key determinant of the efficacy of anti-cancer treatments. The use of animal models (e.g. Mouse, Zebrafish and Drosophila) to study cancer has greatly impacted our understanding of the processes governing initiation, progression and metastasis and allowed the discovery and pre-clinical validation of novel cancer treatments as it allows to recreate tumor development in a more pathophysiologic environment.
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Correction to: Animal Models to Study Cancer and Its Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1219:C1. [PMID: 38379237 DOI: 10.1007/978-3-030-34025-4_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
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422 The impact of sacral neuromodulation on male erectile function. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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288 The role of low-intensity shock wave therapy on erectile dysfunction. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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The role of the hypoxic tumor microenvironment on the macrophage-tumor cell interplay: PS124. Porto Biomed J 2017; 2:216. [PMID: 32258710 DOI: 10.1016/j.pbj.2017.07.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Multi-drug-resistant Enterobacteriaceae in a Portuguese neonatal intensive care unit. J Hosp Infect 2017; 96:130-131. [PMID: 28433397 DOI: 10.1016/j.jhin.2017.03.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 03/13/2017] [Indexed: 11/25/2022]
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Treatment of long anterior urethral stricture associated to lichen sclerosus. Actas Urol Esp 2017; 41:123-131. [PMID: 27816211 DOI: 10.1016/j.acuro.2016.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 08/30/2016] [Accepted: 09/01/2016] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Panurethral stricture associated with lichen sclerosus is a therapeutic challenge. We present the analysis of our results using two urethroplasty techniques based on oral mucosa graft. MATERIAL AND METHOD Retrospective study in patients with long anterior urethral stricture (>8cm) associated with lichen sclerosus. Patients received urethroplasty with oral mucosa graft technique according Kulkarni (n=25) or two-step Johanson-Bracka urethroplasty (n=15). Demographics, operative time, complications (Clavien-Dindo), hospital stay, days with catheter, EAV postoperative pain, failure rate, need for retreatment and functional data including IPSS, QoL, Qmax, post void residual (PVR) are evaluated. RESULTS In all cases there was involvement of glandular and penile urethra, and in 75% of bulbar urethra. A single graft was used in 22.5%, two in 72.5% and three in 5%. Patients treated at a single step were younger (P=.007). Although the length of the stenosis was equivalent in both techniques (P=.96), relapse and complication rates were higher in two-step surgery (P=.05 and P=.03; respectively) and so was operative time (P<.0001) and overall stay (P=.0002). There were no differences in preoperative IPSS, QoL, Qmax or PVR, neither in postoperative values of IPSS or Qmax; but there was a difference in QoL (P=.006) and PVR (P=.03) favouring single-step urethroplasty. VAS pain on postoperative day 1 was also lower in Kulkarni urethroplasty than in the first step of Johanson-Bracka technique (P<.0001). CONCLUSIONS In patients with lichen sclerosus and long anterior urethral stricture Kulkarni urethroplasty provides more efficient and better patient reported outcomes than Johanson-Bracka urethroplasty. It also prevents cosmetic, sexual and voiding temporary deterioration inherent to 2-step surgery.
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A bifurcation theorem for evolutionary matrix models with multiple traits. J Math Biol 2017; 75:491-520. [DOI: 10.1007/s00285-016-1091-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 10/03/2016] [Indexed: 11/25/2022]
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Comparison of simple sucrose and percoll based methodologies for synaptosome enrichment. Anal Biochem 2016; 517:1-8. [PMID: 27771393 DOI: 10.1016/j.ab.2016.10.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/16/2016] [Accepted: 10/18/2016] [Indexed: 01/20/2023]
Abstract
Synaptosomes are isolated nerve terminals. They represent an extremely attractive in vitro model system to study synaptic physiology since they preserve morphological and functional characteristics of the synapse. As such they have been used to investigate synaptic dysfunctions associated with neuropathologies like Alzheimer's disease. In the present work two simple methodologies for isolating synaptosomal-enriched fractions were compared for the first time. The starting points of both protocols were rat cortical or hippocampal homogenized tissues that underwent several differential centrifugation steps followed by a final purification of synaptosomal-enriched fractions using either a Percoll gradient or a Sucrose gradient. Comparison of the fractions obtained was carried out, using both biochemical and electron microscopy approaches. In the biochemical analysis the protein levels of pre-synaptic, post-synaptic, nuclear and mitochondrial markers were evaluated. Additional characterization of the synaptosomal-enriched fractions was performed using transmission electron microscopy. In summary, the results indicate that under the conditions tested the Sucrose based protocol is more efficient for the isolation of synaptosomal-enriched fractions from both neuronal tissues, being particularly efficient for hippocampus that is a less abundant brain tissue. Further, the sucrose protocol apparently results in a higher yield of viable synaptosomes suitable for further assays, including structural and functional studies of synapses; making this an attractive procedure to study processes associated with neuropathologies.
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Electron Phase Shift at the Zero-Bias Anomaly of Quantum Point Contacts. PHYSICAL REVIEW LETTERS 2016; 116:136801. [PMID: 27081995 DOI: 10.1103/physrevlett.116.136801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Indexed: 06/05/2023]
Abstract
The Kondo effect is the many-body screening of a local spin by a cloud of electrons at very low temperature. It has been proposed as an explanation of the zero-bias anomaly in quantum point contacts where interactions drive a spontaneous charge localization. However, the Kondo origin of this anomaly remains under debate, and additional experimental evidence is necessary. Here we report on the first phase-sensitive measurement of the zero-bias anomaly in quantum point contacts using a scanning gate microscope to create an electronic interferometer. We observe an abrupt shift of the interference fringes by half a period in the bias range of the zero-bias anomaly, a behavior which cannot be reproduced by single-particle models. We instead relate it to the phase shift experienced by electrons scattering off a Kondo system. Our experiment therefore provides new evidence of this many-body effect in quantum point contacts.
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Oral chronic GVHD outcomes and resource utilization: a subanalysis from the chronic GVHD consortium. Oral Dis 2015; 22:235-40. [PMID: 26708609 DOI: 10.1111/odi.12429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/25/2015] [Accepted: 12/16/2015] [Indexed: 01/03/2023]
Abstract
OBJECTIVES This study evaluated the extent to which oral chronic graft-versus-host disease (cGVHD) consensus assessments are predictive of management across institutions with and without oral medicine (OM) centers, and whether ancillary care guidelines are followed within clinical practice. METHODS Longitudinal oral cGVHD data were abstracted from the cGVHD Consortium, and additional mouth-specific management data were analyzed across five transplant centers. RESULTS Seventy-nine patients with 656 visits were observed for a median of 7.1 months with one visit per follow-up month. Ancillary therapies for oral cGVHD were prescribed for 67% of patients for a median of 0.46 months (per follow-up month) at OM centers and 0.78 months at non-OM centers. Patients treated with ancillary therapy were more likely to have an National Institutes of Health (NIH) mouth score of ≥1 (P < 0.001, odds ratio: 5.1) and mouth pain (P = 0.01, odds ratio: 2.6). The odds ratios of receiving ancillary therapy from OM experts were higher than transplant physicians (53%; P = 0.03). CONCLUSIONS Oral cGVHD consensus assessments corresponding with ancillary therapy use were mouth pain and NIH mouth score, with higher odds ratios of receiving therapy from OM experts. Ancillary care guidelines for oral cGVHD are reflected in academic clinical practice with respect to utilization of recommended prescriptions.
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Unravelling the relationship between protein sequence and low-complexity regions entropies: Interactome implications. J Theor Biol 2015; 382:320-7. [PMID: 26164061 DOI: 10.1016/j.jtbi.2015.06.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/12/2015] [Accepted: 06/28/2015] [Indexed: 10/23/2022]
Abstract
Low-complexity regions are sub-sequences of biased composition in a protein sequence. The influence of these regions over protein evolution, specific functions and highly interactive capacities is well known. Although protein sequence entropy has been largely studied, its relationship with low-complexity regions and the subsequent effects on protein function remains unclear. In this work we propose a theoretical and empirical model integrating the sequence entropy with local complexity parameters. Our results indicate that the protein sequence entropy is related with the protein length, the entropies inside and outside the low-complexity regions as well as their number and average size. We found a small but significant increment in the sequence entropy of hubs proteins. In agreement with our theoretical model, this increment is highly dependent of the balance between the increment of protein length and average size of the low-complexity regions. Finally, our models and proteins analysis provide evidence supporting that modifications in the average size is more relevant in hubs proteins than changes in the number of low-complexity regions.
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27
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MON-PP094: Treatment with Symbiotic Protects Intestinal Damage in an Experimental Model of Mucositis. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30526-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Using an Automatic Tool to Identify Potential Readability Issues in a Large Sample of Medicinal Package Inserts. Methods Inf Med 2015; 54:379-81. [PMID: 26108873 DOI: 10.3414/me15-04-0003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/29/2015] [Indexed: 11/09/2022]
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29
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OP0022 Juvenile Idiopathic Arthritis in Adulthood: Clinical Pattern and Long-Term Outcomes of 512 Patients. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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30
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SAT0494 Long-Term Retention and Predictors of Anti-Tnf Treatment Response in Juvenile Idiopathic Arthritis: Data from Reuma.PT, a Nation-Wide Register. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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31
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AB0965 Single Nucleotide Polymorphisms in TNFA1P3 and PTPN2 Are Associated with a Poor Outcome in Juvenile Idiopathic Arthritis. Data From Reuma.PT. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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32
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Tubulopathie post-rhabdomyolyse : polarisation biphasique et rôle des macrophages du rein. Nephrol Ther 2014. [DOI: 10.1016/j.nephro.2014.07.355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Haptoglobin 2-2 phenotype is associated with decreased serum iron levels in endstage renal disease patients resistant to rhEPO therapy. Br J Biomed Sci 2014; 71:79-81. [PMID: 24974683 DOI: 10.1080/09674845.2014.11669969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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34
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FRI0538 Juvenile Idiopathic Arthritis: from Childhood to Adult Life: Table 1. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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35
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[Thrombotic microangiopathy: when time is the key factor!]. REVUE MEDICALE SUISSE 2014; 10:794-803. [PMID: 24791425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Thrombotic microangiopathy or "TMA" including thrombotic thrombocytopenic purpura (TTP) and hemolytic uremic syndrome (HUS) became a public health problem following the European outbreak of E. coli (O104:H4) gastroenteritis in 2011. A rapid diagnosis and therapy in an intensive care unit provide better patient survival and lower cost for society. Supportive treatment has significantly improved the prognosis over the past decade and includes fresh frozen plasma for TTP, plasmapheresis for HUS, and recently a new therapeutic agent: anti-C5 antibodies. We will provide in this article, through the current literature and four cases encountered in our department, to establish an algorithm to manage patients with TMA.
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Role of the angiotensin II blockade on glycemic and cardiovascular profile in rats with diet‐induced obesity (701.7). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.701.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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PReS-FINAL-2163: Disease activity in a juvenile idiopathic arthritis population after 5 years follow-up. Pediatr Rheumatol Online J 2013. [PMCID: PMC4045024 DOI: 10.1186/1546-0096-11-s2-p175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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38
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PReS-FINAL-2095: Older age predicts poor response to 6-months methotrexate therapy in a juvenile idiopathic arthritis cohort of patients. Pediatr Rheumatol Online J 2013. [PMCID: PMC4043502 DOI: 10.1186/1546-0096-11-s2-p107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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39
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A new approach for the extraction of pollutants from wastewaters handled by the graphic industry. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2013; 122:99-104. [PMID: 23562952 DOI: 10.1016/j.jenvman.2013.01.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 01/18/2013] [Accepted: 01/27/2013] [Indexed: 06/02/2023]
Abstract
It is widely recognized that the Graphic Industry handles toxic products and produces, in its various operations, toxic wastes. These wastes can cause serious environmental damages and can lead to severe health problems. In this work we report an efficient, simple and cheap to run method for the removal of some of the most common pollutants involved in the various stages of the Graphic Industry production, using a Solid-Phase Extraction (SPE) methodology. We have determined equilibrium constants, K(eq), and adsorption (k(up)) and desorption (k(off)) rate constants for the extraction of benzene, xylene, toluene and ethylbenzene (BXTE) from water, using C18 disks. The removal of these compounds was monitored by UV-vis spectroscopy, at room temperature. Average extraction efficiencies were of 60% in a mixture of BXTEs and close to 80% when pollutants were assessed separately. Since the retention mechanism in the C18 disk is essentially governed by hydrophobic interactions between the compounds and the alkyl chains of the disk, we have also shown that these pollutants' lipophilicity plays an important role in the rationalization of their behavior during the extraction process.
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SAT0481 Disease Activity in a Juvenile Idiopathic Arthritis Population after 5 Years Follow-Up. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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41
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AB0696 Predictors of poor response to 6-months methotrexate therapy in a juvenile idiopathic arthritis cohort of patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.3018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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AB0282 DAS28, CDAI and SDAI cutoffs do not translate same information - results from the rheumatic diseases portuguese register, reuma.pt. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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43
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SAT0448 JADAS-CRP Instead of JADAS-ESR…Results from Reuma.Pt. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Evidence of chytrid-mediated population declines in common midwife toad in Serra da Estrela, Portugal. Anim Conserv 2012. [DOI: 10.1111/j.1469-1795.2012.00602.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Can I help you? Physicians' expectations as predictor for treatment outcome. Eur J Pain 2012; 16:1455-66. [DOI: 10.1002/j.1532-2149.2012.00152.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2012] [Indexed: 01/22/2023]
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Transport inefficiency in branched-out mesoscopic networks: an analog of the Braess paradox. PHYSICAL REVIEW LETTERS 2012; 108:076802. [PMID: 22401236 DOI: 10.1103/physrevlett.108.076802] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Indexed: 05/31/2023]
Abstract
We present evidence for a counterintuitive behavior of semiconductor mesoscopic networks that is the analog of the Braess paradox encountered in classical networks. A numerical simulation of quantum transport in a two-branch mesoscopic network reveals that adding a third branch can paradoxically induce transport inefficiency that manifests itself in a sizable conductance drop of the network. A scanning-probe experiment using a biased tip to modulate the transmission of one branch in the network reveals the occurrence of this paradox by mapping the conductance variation as a function of the tip voltage and position.
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Sampling precision and variability of tree species abundance ranks in a semideciduous Atlantic forest fragment. COMMUNITY ECOL 2011. [DOI: 10.1556/comec.12.2011.2.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Comparative study of bipolar eletrocoagulation versus argon plasma coagulation for rectal bleeding due to chronic radiation coloproctopathy. Endoscopy 2011; 43:697-701. [PMID: 21611944 DOI: 10.1055/s-0030-1256467] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND STUDY AIM Chronic radiation coloproctopathy (CRCP) is a well-recognized complication of radiotherapy, with rectal bleeding the most common presentation. It is frequently refractory to conservative management, but the optimal endoscopic treatment of bleeding secondary to CRCP is still controversial. The efficacy and safety of bipolar eletrocoagulation (BEC) and argon plasma coagulation (APC) in the management of bleeding from CRCP were evaluated and compared. PATIENTS AND METHODS 30 patients (mean age 67.4 years) with active and chronic bleeding from telangiectasias, were randomly allocated to BEC or APC and stratified by severity of CRCP according to clinical severity and endoscopic findings (Saunders score). Success was defined as eradication of all telangiectasias, and therapeutic failure as need for more than seven sessions or for other treatment. Complications were categorized as minor (e.g. fever, anal or abdominal pain) or major (hemorrhagic). RESULTS Both treatments were equally effective for the treatment of CRCP rectal bleeding. Only one failure was observed in each group (P = 1.000). There was no significant difference between the two groups regarding number of sessions, minor or major complications, or relapse. However, overall complication rate was significantly higher in the BEC group (P = 0.003). CONCLUSIONS BEC and APC are both effective for the therapy of bleeding telangiectasias from CRCP. There are probably no major differences between them. Although APC seemed safer than BEC in this investigation, further studies, involving a much larger population, are needed to assess the complication rates and determine the best management option.
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The incidence of bacteraemia after argon plasma coagulation in patients with chronic radiation proctocolitis. Colorectal Dis 2011; 13:823-5. [PMID: 20402735 DOI: 10.1111/j.1463-1318.2010.02279.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIM Argon plasma coagulation (APC) is considered a safe treatment for haemorrhagic chronic radiation proctocolitis (CRPC), but bacteraemia is a rare complication. The study aimed to evaluate the frequency of bacteraemia after APC. METHOD A prospective study of 21 patients who underwent APC (30 procedures) for CRPC was carried out. Blood cultures (Bactec(®) ) were obtained before and 30 min after the procedure (60 samples total). Patients were monitored for 48 h after the procedure to detect signs of infection. RESULTS None of the 21 patients had fever or any sign suggestive of infection after any of the 30 sessions. All baseline blood cultures were negative and two (7%) of the 30-min blood cultures were positive (Staphylococcus hominis n = 1; Streptococcus bovis and Rhodotorula sp n = 1). The first was likely to be a contaminant and the second patient had no evidence of any other colonic disease (neoplasia or polyps) beside CRPC. CONCLUSION APC is a low-risk procedure regarding bacteraemia and does not warrant prophylactic antibiotic administration.
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