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Schoske L, Lübkemann-Warwas F, Morales I, Wesemann C, Eckert JG, Graf RT, Bigall NC. Correction: Magnetic aerogels from FePt and CoPt 3 directly from organic solution. Nanoscale 2024. [PMID: 38699844 DOI: 10.1039/d4nr90086c] [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] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Correction for 'Magnetic aerogels from FePt and CoPt3 directly from organic solution' by L. Schoske et al., Nanoscale, 2024, 16, 4229-4238, https://doi.org/10.1039/D3NR05892A.
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Affiliation(s)
- L Schoske
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - F Lübkemann-Warwas
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
| | - I Morales
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
| | - C Wesemann
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
| | - J G Eckert
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- School of Additive Manufacturing, Ministry for Science and Culture of Lower Saxony, Hannover, Germany
| | - R T Graf
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Laboratory of Nano and Quantum Engineering, Leibniz University Hannover, Schneiderberg 39, 30167 Hannover, Germany
| | - N C Bigall
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
- School of Additive Manufacturing, Ministry for Science and Culture of Lower Saxony, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz University Hannover, Schneiderberg 39, 30167 Hannover, Germany
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
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Schoske L, Lübkemann-Warwas F, Morales I, Wesemann C, Eckert JG, Graf RT, Bigall NC. Magnetic aerogels from FePt and CoPt 3 directly from organic solution. Nanoscale 2024; 16:4229-4238. [PMID: 38345355 DOI: 10.1039/d3nr05892a] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Here the synthesis of magnetic aerogels from iron platinum and cobalt platinum nanoparticles is presented. The use of hydrazine monohydrate as destabilizing agent triggers the gelation directly from organic solution, and therefore a phase transfer to aqueous media prior to the gelation is not necessary. The aerogels were characterized through Transmission Electron Microscopy, Scanning Electron Microscopy, Powder X-Ray Diffraction Analysis and Argon Physisorption measurements to prove the formation of a porous network and define their compositions. Additionally, magnetization measurements in terms of hysteresis cycles at 5 K and 300 K (M-H-curves) as well as zero field cooled-field cooled measurements (ZFC-FC measurements) of the dried colloids and the respective xero- and aerogels were performed, in order to analyze the influence of the gelation process and the network structure on the magnetic properties.
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Affiliation(s)
- L Schoske
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - F Lübkemann-Warwas
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
| | - I Morales
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
| | - C Wesemann
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
| | - J G Eckert
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- School of Additive Manufacturing, Ministry for Science and Culture of Lower Saxony, Hannover, Germany
| | - R T Graf
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Laboratory of Nano and Quantum Engineering, Leibniz University Hannover, Schneiderberg 39, 30167 Hannover, Germany
| | - N C Bigall
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3a, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD (Photonics, Optics and Engineering- Innovation Across Disciplines), Leibniz University Hannover, 30167 Hannover, Germany
- School of Additive Manufacturing, Ministry for Science and Culture of Lower Saxony, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, Leibniz University Hannover, Schneiderberg 39, 30167 Hannover, Germany
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
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Deckert A, Anders S, Morales I, De Allegri M, Nguyen HT, Souares A, McMahon S, Meurer M, Burk R, Lou D, Brugnara L, Sand M, Koeppel L, Maier-Hein L, Ross T, Adler TJ, Brenner S, Dyer C, Herbst K, Ovchinnikova S, Marx M, Schnitzler P, Knop M, Bärnighausen T, Denkinger CM. Correction: Comparison of Four Active SARS-CoV-2 Surveillance Strategies in Representative Population Sample Points: Two-Factor Factorial Randomized Controlled Trial. JMIR Public Health Surveill 2024; 10:e57203. [PMID: 38364221 PMCID: PMC10907930 DOI: 10.2196/57203] [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] [Received: 02/07/2024] [Accepted: 02/07/2024] [Indexed: 02/18/2024] Open
Abstract
[This corrects the article DOI: 10.2196/44204.].
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Affiliation(s)
| | - Simon Anders
- Center for Molecular Biology HeidelbergHeidelbergGermany
| | - Ivonne Morales
- Division of Infectious Disease and Tropical Medicine, Heidelberg University HospitalHeidelbergGermany
| | | | | | | | | | | | - Robin Burk
- Center for Molecular Biology HeidelbergHeidelbergGermany
| | - Dan Lou
- Center for Molecular Biology HeidelbergHeidelbergGermany
| | - Lucia Brugnara
- evaplan GmbH at the University HospitalHeidelbergGermany
| | - Matthias Sand
- GESIS Leibniz-Institute for the Social SciencesMannheimGermany
| | - Lisa Koeppel
- Division of Infectious Disease and Tropical Medicine, Heidelberg University HospitalHeidelbergGermany
| | - Lena Maier-Hein
- Division of Computer Assisted Medical Interventions, German Cancer Research CentreHeidelbergGermany
| | - Tobias Ross
- Division of Computer Assisted Medical Interventions, German Cancer Research CentreHeidelbergGermany
| | - Tim J Adler
- Division of Computer Assisted Medical Interventions, German Cancer Research CentreHeidelbergGermany
| | | | | | - Konrad Herbst
- Center for Molecular Biology HeidelbergHeidelbergGermany
| | | | - Michael Marx
- evaplan GmbH at the University HospitalHeidelbergGermany
| | - Paul Schnitzler
- Center of Infectious Diseases, Virology, Heidelberg University HospitalHeidelbergGermany
| | - Michael Knop
- Center for Molecular Biology HeidelbergHeidelbergGermany
| | | | - Claudia M Denkinger
- Division of Infectious Disease and Tropical Medicine, Heidelberg University HospitalHeidelbergGermany
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Moreno-Olmedo E, Nagore G, Aakki L, Morales I, Gómez E, Garcia A, Beltran L, Suarez V. Long-Term Outcomes of Prospective Clinical Trial HDR-Brachytherapy Monotherapy in Single Day in Patients with Localized Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 117:S110-S111. [PMID: 37784291 DOI: 10.1016/j.ijrobp.2023.06.437] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This prospective clinical trial to evaluated long-term outcomes associated with 2 fractions in a single day, one implant, high-dose-rate (HDR) brachytherapy as monotherapy for patients with localized prostate cancer. We report Genitourinary (GU) and gastrointestinal (GI) toxicity and Disease control. MATERIALS/METHODS Between November 2010 and Feb 2016 a total of 120 patients diagnosed with low/intermediate-risk localized prostate cancer were treated. The prescribed dose was 27 Gy in 2 fractions in a day using a single implant. 34 patients (28%) were intermediate-risk cancer. 38 patients (31,7%) received hormonal therapy. We measured the incidence of no biochemical evidence of disease (bNED) based on the Phoenix definition of failure (nadir prostate-specific antigen (PSA) + 2 ng/mL). GU and GI toxicity were evaluated by CTCAE v4.0 and sexual function were prospectively documented at each follow up visit. RESULTS With a median follow-up was 123 months (range 9-148) the actuarial rates of Local Control were 96%, Biochemical Control 93.4%, Distant Failure 3.3%, Disease-Free Survival 92.3 %, Metastasis-free survival 96.67% and Overall Survival was 86.7%. The cumulative incidence of acute grade (G) 1-2 GU toxicity was 20.8%, mainly frequency/urgency (10%), dysuria (10%), dribbling/hesitancy (0.8%). 3 patients required a Foley catheter during 1 week. No acute GI toxicities were recorded. Chronic G1-2 GU toxicities were 29 %, mainly dysuria (12.6%), urinary frequency/urgency (5.8%) and urinary Incontinence G2 (1.6%). 1 patient had G2 rectal bleeding and 2 patients had G3 GU toxicity requiring transurethral resection of bladder (TURB). 23.7% of patients without Hormonal therapy reported G1-2 sexual impotence after 2 years therapy. CONCLUSION With 10 years of follow-up, our prospective data are sufficiently mature to report on efficacy and toxicity outcomes, making a single implant, 2 fractions HDR-BT an attractive option for patients with localized low/intermediate-risk prostate cancer and be able to consider it a standard of care in this setting. To the best of our knowledge, this is the first report regarding single day HDR-BRT as monotherapy with a median follow-up of 10 years.
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Affiliation(s)
| | - G Nagore
- Genesiscare Spain, Alicant, Spain
| | - L Aakki
- Genesiscare Spain, Alicant, Spain
| | | | - E Gómez
- Genesiscare Spain, Alicant, Spain
| | - A Garcia
- Genesiscare Spain, Alicant, Spain
| | | | - V Suarez
- GenesisCare Spain, Madrid, Spain
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Deckert A, Anders S, Morales I, De Allegri M, Nguyen HT, Souares A, McMahon S, Meurer M, Burk R, Lou D, Brugnara L, Sand M, Koeppel L, Maier-Hein L, Ross T, Adler TJ, Brenner S, Dyer C, Herbst K, Ovchinnikova S, Marx M, Schnitzler P, Knop M, Bärnighausen T, Denkinger CM. Comparison of Four Active SARS-CoV-2 Surveillance Strategies in Representative Population Sample Points: Two-Factor Factorial Randomized Controlled Trial. JMIR Public Health Surveill 2023; 9:e44204. [PMID: 37235704 PMCID: PMC10437130 DOI: 10.2196/44204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 11/14/2022] [Revised: 03/30/2023] [Accepted: 05/24/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND The COVID-19 pandemic is characterized by rapid increases in infection burden owing to the emergence of new variants with higher transmissibility and immune escape. To date, monitoring the COVID-19 pandemic has mainly relied on passive surveillance, yielding biased epidemiological measures owing to the disproportionate number of undetected asymptomatic cases. Active surveillance could provide accurate estimates of the true prevalence to forecast the evolution of the pandemic, enabling evidence-based decision-making. OBJECTIVE This study compared 4 different approaches of active SARS-CoV-2 surveillance focusing on feasibility and epidemiological outcomes. METHODS A 2-factor factorial randomized controlled trial was conducted in 2020 in a German district with 700,000 inhabitants. The epidemiological outcome comprised SARS-CoV-2 prevalence and its precision. The 4 study arms combined 2 factors: individuals versus households and direct testing versus testing conditioned on symptom prescreening. Individuals aged ≥7 years were eligible. Altogether, 27,908 addresses from 51 municipalities were randomly allocated to the arms and 15 consecutive recruitment weekdays. Data collection and logistics were highly digitized, and a website in 5 languages enabled low-barrier registration and tracking of results. Gargle sample collection kits were sent by post. Participants collected a gargle sample at home and mailed it to the laboratory. Samples were analyzed with reverse transcription loop-mediated isothermal amplification (RT-LAMP); positive and weak results were confirmed with real-time reverse transcription-polymerase chain reaction (RT-PCR). RESULTS Recruitment was conducted between November 18 and December 11, 2020. The response rates in the 4 arms varied between 34.31% (2340/6821) and 41.17% (2043/4962). The prescreening classified 16.61% (1207/7266) of the patients as COVID-19 symptomatic. Altogether, 4232 persons without prescreening and 7623 participating in the prescreening provided 5351 gargle samples, of which 5319 (99.4%) could be analyzed. This yielded 17 confirmed SARS-CoV-2 infections and a combined prevalence of 0.36% (95% CI 0.14%-0.59%) in the arms without prescreening and 0.05% (95% CI 0.00%-0.108%) in the arms with prescreening (initial contacts only). Specifically, we found a prevalence of 0.31% (95% CI 0.06%-0.58%) for individuals and 0.35% (95% CI 0.09%-0.61%) for households, and lower estimates with prescreening (0.07%, 95% CI 0.0%-0.15% for individuals and 0.02%, 95% CI 0.0%-0.06% for households). Asymptomatic infections occurred in 27% (3/11) of the positive cases with symptom data. The 2 arms without prescreening performed the best regarding effectiveness and accuracy. CONCLUSIONS This study showed that postal mailing of gargle sample kits and returning home-based self-collected liquid gargle samples followed by high-sensitivity RT-LAMP analysis is a feasible way to conduct active SARS-CoV-2 population surveillance without burdening routine diagnostic testing. Efforts to improve participation rates and integration into the public health system may increase the potential to monitor the course of the pandemic. TRIAL REGISTRATION Deutsches Register Klinischer Studien (DRKS) DRKS00023271; https://tinyurl.com/3xenz68a. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) RR2-10.1186/s13063-021-05619-5.
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Affiliation(s)
| | - Simon Anders
- Center for Molecular Biology Heidelberg, Heidelberg, Germany
| | - Ivonne Morales
- Division of Infectious Disease and Tropical Medicine, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Hoa Thi Nguyen
- Heidelberg Institute of Global Health, Heidelberg, Germany
| | | | | | - Matthias Meurer
- Center for Molecular Biology Heidelberg, Heidelberg, Germany
| | - Robin Burk
- Center for Molecular Biology Heidelberg, Heidelberg, Germany
| | - Dan Lou
- Center for Molecular Biology Heidelberg, Heidelberg, Germany
| | - Lucia Brugnara
- evaplan GmbH at the University Hospital, Heidelberg, Germany
| | - Matthias Sand
- GESIS Leibniz-Institute for the Social Sciences, Mannheim, Germany
| | - Lisa Koeppel
- Division of Infectious Disease and Tropical Medicine, Heidelberg University Hospital, Heidelberg, Germany
| | - Lena Maier-Hein
- Division of Computer Assisted Medical Interventions, German Cancer Research Centre, Heidelberg, Germany
| | - Tobias Ross
- Division of Computer Assisted Medical Interventions, German Cancer Research Centre, Heidelberg, Germany
| | - Tim J Adler
- Division of Computer Assisted Medical Interventions, German Cancer Research Centre, Heidelberg, Germany
| | | | | | - Konrad Herbst
- Center for Molecular Biology Heidelberg, Heidelberg, Germany
| | | | - Michael Marx
- evaplan GmbH at the University Hospital, Heidelberg, Germany
| | - Paul Schnitzler
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, Heidelberg, Germany
| | - Michael Knop
- Center for Molecular Biology Heidelberg, Heidelberg, Germany
| | | | - Claudia M Denkinger
- Division of Infectious Disease and Tropical Medicine, Heidelberg University Hospital, Heidelberg, Germany
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Rosenberger KD, Phung Khanh L, Tobian F, Chanpheaktra N, Kumar V, Lum LCS, Sathar J, Pleiteés Sandoval E, Maroén GM, Laksono IS, Mahendradhata Y, Sarker M, Rahman R, Caprara A, Souza Benevides B, Marques ETA, Magalhaes T, Brasil P, Amaral Calvet G, Tami A, Bethencourt SE, Dong Thi Hoai T, Nguyen Tan Thanh K, Tran Van N, Nguyen Tran N, Do Chau V, Yacoub S, Nguyen Van K, Guzmán MG, Martinez PA, Nguyen Than Ha Q, Simmons CP, Wills BA, Geskus RB, Jaenisch T, Wanderley Lopes Gomes K, Soares Mesquita LP, Braga C, Castanha PM, Cordeiro MT, Damasceno L, Chuop B, Ouk S, Sin R, Sun S, Alvarez Vera M, Barahona G, Cruz B, Beck D, Gaczkowski R, Junghanss T, Morales I, Wirths M, Natkunam SK, Ho BK, AbuBakar S, Abd-Jamil J, Syed Omar SF, Lizarazo EF, Vincenti-González MF, Lizarazo EF, Tovar R, Vincenti-González MF, Cao Thi T, Dinh Thi Tri H, Huynh Le Anh H, Huynh Thi Le D, Lai Thi Cong T, Nguyen Thi Hong V, Nguyen Thi My L, Tran Thi Nhu T, Truong Thi Thu T, Banh Thi N, Huynh Lam Thuy T, Nguyen Thi Thu H, Tran Thi Kim V, Vo Thanh L, Dang Thi B, Dinh Thi Thu H, Dinh Van H, Nguyen Nguyen H, Vu Thi Thu H. Early diagnostic indicators of dengue versus other febrile illnesses in Asia and Latin America (IDAMS study): a multicentre, prospective, observational study. Lancet Glob Health 2023; 11:e361-e372. [PMID: 36796983 DOI: 10.1016/s2214-109x(22)00514-9] [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] [Received: 04/28/2022] [Revised: 11/14/2022] [Accepted: 11/20/2022] [Indexed: 02/16/2023]
Abstract
BACKGROUND Improvements in the early diagnosis of dengue are urgently needed, especially in resource-limited settings where the distinction between dengue and other febrile illnesses is crucial for patient management. METHODS In this prospective, observational study (IDAMS), we included patients aged 5 years and older with undifferentiated fever at presentation from 26 outpatient facilities in eight countries (Bangladesh, Brazil, Cambodia, El Salvador, Indonesia, Malaysia, Venezuela, and Viet Nam). We used multivariable logistic regression to investigate the association between clinical symptoms and laboratory tests with dengue versus other febrile illnesses between day 2 and day 5 after onset of fever (ie, illness days). We built a set of candidate regression models including clinical and laboratory variables to reflect the need of a comprehensive versus parsimonious approach. We assessed performance of these models via standard measures of diagnostic values. FINDINGS Between Oct 18, 2011, and Aug 4, 2016, we recruited 7428 patients, of whom 2694 (36%) were diagnosed with laboratory-confirmed dengue and 2495 (34%) with (non-dengue) other febrile illnesses and met inclusion criteria, and were included in the analysis. 2703 (52%) of 5189 included patients were younger than 15 years, 2486 (48%) were aged 15 years or older, 2179 (42%) were female and 3010 (58%) were male. Platelet count, white blood cell count, and the change in these variables from the previous day of illness had a strong association with dengue. Cough and rhinitis had strong associations with other febrile illnesses, whereas bleeding, anorexia, and skin flush were generally associated with dengue. Model performance increased between day 2 and 5 of illness. The comprehensive model (18 clinical and laboratory predictors) had sensitivities of 0·80 to 0·87 and specificities of 0·80 to 0·91, whereas the parsimonious model (eight clinical and laboratory predictors) had sensitivities of 0·80 to 0·88 and specificities of 0·81 to 0·89. A model that includes laboratory markers that are easy to measure (eg, platelet count or white blood cell count) outperformed the models based on clinical variables only. INTERPRETATION Our results confirm the important role of platelet and white blood cell counts in diagnosing dengue, and the importance of serial measurements over subsequent days. We successfully quantified the performance of clinical and laboratory markers covering the early period of dengue. Resulting algorithms performed better than published schemes for distinction of dengue from other febrile illnesses, and take into account the dynamic changes over time. Our results provide crucial information needed for the update of guidelines, including the Integrated Management of Childhood Illness handbook. FUNDING EU's Seventh Framework Programme. TRANSLATIONS For the Bangla, Bahasa Indonesia, Portuguese, Khmer, Spanish and Vietnamese translations of the abstract see Supplementary Materials section.
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Affiliation(s)
- Kerstin D Rosenberger
- Section Clinical Tropical Medicine, Department of Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany; Institute of Medical Statistics and Computational Biology, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Lam Phung Khanh
- Oxford University Clinical Research Unit (OUCRU), Ho Chi Minh City, Viet Nam
| | - Frank Tobian
- Section Clinical Tropical Medicine, Department of Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Varun Kumar
- Angkor Hospital for Children, Siem Reap, Cambodia; East Tennessee State University Quillen College of Medicine, Johnson City, TN, USA
| | | | - Jameela Sathar
- Ampang Hospital, Ministry of Health, Kuala Lumpur, Malaysia
| | | | - Gabriela M Maroén
- Hospital Nacional de Niños Benjamin Bloom, San Salvador, El Salvador; St Jude Children's Research Hospital, Memphis, TN, USA
| | - Ida Safitri Laksono
- Center for Tropical Medicine, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Child Health, Dr Sardjito General Hospital, Yogyakarta, Indonesia
| | - Yodi Mahendradhata
- Center for Tropical Medicine, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Malabika Sarker
- Heidelberg Institute of Global Health, Heidelberg University Hospital, Heidelberg, Germany; James P Grant School of Public Health, BRAC University, Dhaka, Bangladesh
| | - Ridwanur Rahman
- Shaheed Suhrawardy Medical College and Hospital, Dhaka, Bangladesh
| | | | - Bruno Souza Benevides
- Universidade Estadual Do Ceará, Fortaleza, Brazil; Centro Universitário Christus-Unichristus, Fortaleza, Brazil; Centro Universitário Fametro-Unifametro, Fortaleza, Brazil
| | - Ernesto T A Marques
- Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, Brazil; Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Tereza Magalhaes
- Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, Pernambuco, Brazil; Departamento de Medicina Preventiva e Social, Faculdade de Medicina, Universidade Federal da Bahia, Salvador, Brazil; Department of Entomology, Texas A&M University, College Station, TX, USA
| | - Patrícia Brasil
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Guilherme Amaral Calvet
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Adriana Tami
- Facultad de Ciencias de la Salud, Universidad de Carabobo, Valencia, Venezuela; Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Sarah E Bethencourt
- Facultad de Ciencias de la Salud, Universidad de Carabobo, Valencia, Venezuela
| | - Tam Dong Thi Hoai
- Oxford University Clinical Research Unit (OUCRU), Ho Chi Minh City, Viet Nam
| | | | - Ngoc Tran Van
- Hospital for Tropical Diseases, Ho Chi Minh City, Viet Nam
| | | | - Viet Do Chau
- Children's Hospital Number 2, Ho Chi Minh City, Viet Nam
| | - Sophie Yacoub
- Oxford University Clinical Research Unit (OUCRU), Ho Chi Minh City, Viet Nam; Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, Oxford University, Oxford, UK
| | | | - María G Guzmán
- Institute of Tropical Medicine "Pedro Kouri" (IPK), Havana, Cuba
| | - Pedro A Martinez
- Institute of Tropical Medicine "Pedro Kouri" (IPK), Havana, Cuba
| | | | - Cameron P Simmons
- Oxford University Clinical Research Unit (OUCRU), Ho Chi Minh City, Viet Nam; Institute of Vector-borne Disease, Monash University, Melbourne, VIC, Australia
| | - Bridget A Wills
- Oxford University Clinical Research Unit (OUCRU), Ho Chi Minh City, Viet Nam; Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, Oxford University, Oxford, UK
| | - Ronald B Geskus
- Oxford University Clinical Research Unit (OUCRU), Ho Chi Minh City, Viet Nam; Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, Oxford University, Oxford, UK
| | - Thomas Jaenisch
- Section Clinical Tropical Medicine, Department of Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany; Heidelberg Institute of Global Health, Heidelberg University Hospital, Heidelberg, Germany; Center for Global Health, Colorado School of Public Health, Aurora, CO, USA; Paediatric Infectious Diseases, Colorado School of Medicine, Aurora, CO, USA.
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7
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Pluss O, Campbell H, Pezzi L, Morales I, Roell Y, Quandelacy TM, Arora RK, Boucher E, Lamb MM, Chu M, Bärnighausen T, Jaenisch T. Limitations introduced by a low participation rate of SARS-CoV-2 seroprevalence data. Int J Epidemiol 2022; 52:32-43. [PMID: 36164817 PMCID: PMC9619459 DOI: 10.1093/ije/dyac178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 02/23/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There has been a large influx of COVID-19 seroprevalence studies, but comparability between the seroprevalence estimates has been an issue because of heterogeneities in testing platforms and study methodology. One potential source of heterogeneity is the response or participation rate. METHODS We conducted a review of participation rates (PR) in SARS-CoV-2 seroprevalence studies collected by SeroTracker and examined their effect on the validity of study conclusions. PR was calculated as the count of participants for whom the investigators had collected a valid sample, divided by the number of people invited to participate in the study. A multivariable beta generalized linear model with logit link was fitted to determine if the PR of international household and community-based seroprevalence studies was associated with the factors of interest, from 1 December 2019 to 10 March 2021. RESULTS We identified 90 papers based on screening and were able to calculate the PR for 35 out of 90 papers (39%), with a median PR of 70% and an interquartile range of 40.92; 61% of the studies did not report PR. CONCLUSIONS Many SARS-CoV-2 seroprevalence studies do not report PR. It is unclear what the median PR rate would be had a larger portion not had limitations in reporting. Low participation rates indicate limited representativeness of results. Non-probabilistic sampling frames were associated with higher participation rates but may be less representative. Standardized definitions of participation rate and data reporting necessary for the PR calculations are essential for understanding the representativeness of seroprevalence estimates in the population of interest.
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Affiliation(s)
- Olivia Pluss
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, CO, USA
| | - Harlan Campbell
- Department of Statistics, University of British Columbia, Vancouver, Canada
| | - Laura Pezzi
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France
| | - Ivonne Morales
- Division of Infectious Disease and Tropical Medicine, Center for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany,Heidelberg Institute for Global Health, Heidelberg University Hospital, Heidelberg, Germany
| | - Yannik Roell
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, CO, USA
| | - Talia M Quandelacy
- Department of Epidemiology, Colorado School of Public Health, University of Colorado, Aurora, CO, USA
| | - Rahul Krishan Arora
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK,Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - Emily Boucher
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada,Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Molly M Lamb
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, CO, USA,Department of Epidemiology, Colorado School of Public Health, University of Colorado, Aurora, CO, USA
| | - May Chu
- Center for Global Health, Colorado School of Public Health, University of Colorado, Aurora, CO, USA
| | - Till Bärnighausen
- Heidelberg Institute for Global Health, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Jaenisch
- Corresponding author. Department of Epidemiology and Center for Global Health, Colorado School of Public Health, 13199 East Montview Boulevard, Suite 310, Mail Stop A090, Aurora, CO 80045, USA. E-mail:
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8
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Morales I, Arrieta M. Cuadro depresivo con conductas autolesivas agravado por la situación de pérdida en pandemia en una adolescente de 17 años. Medicine - Programa de Formación Médica Continuada Acreditado 2022; 13:3642.e1-3642.e3. [PMID: 36033365 PMCID: PMC9400165 DOI: 10.1016/j.med.2022.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ana (nombre figurado) es una adolescente de 17 años que ya se encontraba en seguimiento psicológico antes del mes de marzo del año 2020, cuando comenzó la pandemia mundial por la COVID-19 que ha roto el delicado equilibro de la salud mental de muchos jóvenes. Consultó por primera vez con 14 años por presentar un bajo rendimiento escolar y un pobre autoconcepto académico. Recibió un apoyo psicopedagógico y tratamiento psicológico, evidenciándose ya una conflictividad familiar, con un hermano mayor que ella que presentaba un cuadro depresivo cuando Ana contaba con 14 años, lo cual generaba una dinámica familiar disfuncional. Pero Ana no generaba problemas, según refería su madre, lo único que ocurría era que no aprobaba. Desde aquel momento, Ana ya no era vista ni contaba para nada. Solo era una mera espectadora de toda la conflictividad familiar, sin ser tenida en cuenta ni escuchada, porque no era disruptiva ni presentaba un patrón desajustado. En diciembre de 2019 vuelve a realizar una consulta, en este caso con psiquiatría. El motivo de la consulta en esta ocasión estaba relacionado con un bajo estado de ánimo, aunque su madre vuelve a poner el foco en el rendimiento escolar.
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Affiliation(s)
- I Morales
- Psikids. Centro de Psicología y Psiquiatría. Pozuelo de Alarcón. Madrid. España
| | - M Arrieta
- Psikids. Centro de Psicología y Psiquiatría. Pozuelo de Alarcón. Madrid. España
- Hospital Universitario Infanta Leonor. Madrid. España
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9
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Romaniuk P, Behrens Y, Morales I, Kaczmarek K, Cassens M, Rodríguez López C. Competences in the management of health regions: Germany, Poland and Spain. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab164.775] [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: 11/13/2022] Open
Abstract
Abstract
Background
Germany has a comprehensive and diverse network of health regions, Spain has partial health regions and in Poland this model is not yet present. The purpose of this study is to summarize and compare the experiences of Spain and Germany in terms of health network managers activity, along with a potential and conditioning for the existence of similar structures in Poland, to determine what competences they need in each country and what are the similarities and differences between them.
Methods
In the three countries, 18 in total qualitative interviews were conducted with experts and stakeholders from the health sector, public administration, the health economy and health regions. The interviews focused on the current state of the health systems as well as the required competences of a regional health network manager. They were analysed for content. The following categories were created: Health, management, social skills and other competences.
Results and discussion
There is an overlap in the required competences in the three countries. A knowledge in the field of public health, the organisation and assessment of health services as well as communication and management skills are of importance. In addition, there are competences in fund raising and legal matters. Country-specific competencies and areas must be taken into account, e.g. in Germany addressing people with a migration background is a more central issue than in Poland, while in the latter country high pressure has been put on the soft skills.
Conclusions
European competence profile for managers of regional health networks is possible, which harmonizes with and complements the competence profile of public health specialists. Nonetheless, national profiles require to highlight different critical competences adapted to local conditions.
Main message
The competences of a regional health network manager are predominantly cross-national.
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Affiliation(s)
- P Romaniuk
- Medical University of Silesia in Katowice, Department of Health Policy and Chair of Public Health Policy, Katowice, Poland
| | - Y Behrens
- FOM University of Applied Sciences, Institute of Health & Social Affairs, Essen, Germany
| | - I Morales
- Universidad Católica San Antonio de Murcia, Faculty of Nursing Studies, Public Health / Community Health, Murcia, Spain
| | - K Kaczmarek
- Medical University of Silesia in Katowice, Department of Health Policy and Chair of Public Health Policy, Katowice, Poland
| | - M Cassens
- FOM University of Applied Sciences, Institute of Health & Social Affairs, Essen, Germany
| | - C Rodríguez López
- Universidad Católica San Antonio de Murcia, Faculty of Nursing Studies, Public Health / Community Health, Murcia, Spain
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10
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Morales I, Rosenberger KD, Magalhaes T, Morais CNL, Braga C, Marques ETA, Calvet GA, Damasceno L, Brasil P, Bispo de Filippis AM, Tami A, Bethencourt S, Alvarez M, Martínez PA, Guzman MG, Souza Benevides B, Caprara A, Quyen NTH, Simmons CP, Wills B, de Lamballerie X, Drexler JF, Jaenisch T. Diagnostic performance of anti-Zika virus IgM, IgAM and IgG ELISAs during co-circulation of Zika, dengue, and chikungunya viruses in Brazil and Venezuela. PLoS Negl Trop Dis 2021; 15:e0009336. [PMID: 33872309 PMCID: PMC8084345 DOI: 10.1371/journal.pntd.0009336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 04/29/2021] [Accepted: 03/26/2021] [Indexed: 12/30/2022] Open
Abstract
Background Serological diagnosis of Zika virus (ZIKV) infection is challenging because of the antibody cross-reactivity among flaviviruses. At the same time, the role of Nucleic Acid Testing (NAT) is limited by the low proportion of symptomatic infections and the low average viral load. Here, we compared the diagnostic performance of commercially available IgM, IgAM, and IgG ELISAs in sequential samples during the ZIKV and chikungunya (CHIKV) epidemics and co-circulation of dengue virus (DENV) in Brazil and Venezuela. Methodology/Principal findings Acute (day of illness 1–5) and follow-up (day of illness ≥ 6) blood samples were collected from nine hundred and seven symptomatic patients enrolled in a prospective multicenter study between June 2012 and August 2016. Acute samples were tested by RT-PCR for ZIKV, DENV, and CHIKV. Acute and follow-up samples were tested for IgM, IgAM, and IgG antibodies to ZIKV using commercially available ELISAs. Among follow-up samples with a RT-PCR confirmed ZIKV infection, anti-ZIKV IgAM sensitivity was 93.5% (43/46), while IgM and IgG exhibited sensitivities of 30.3% (10/33) and 72% (18/25), respectively. An additional 24% (26/109) of ZIKV infections were detected via IgAM seroconversion in ZIKV/DENV/CHIKV RT-PCR negative patients. The specificity of anti-ZIKV IgM was estimated at 93% and that of IgAM at 85%. Conclusions/Significance Our findings exemplify the challenges of the assessment of test performance for ZIKV serological tests in the real-world setting, during co-circulation of DENV, ZIKV, and CHIKV. However, we can also demonstrate that the IgAM immunoassay exhibits superior sensitivity to detect ZIKV RT-PCR confirmed infections compared to IgG and IgM immunoassays. The IgAM assay also proves to be promising for detection of anti-ZIKV seroconversions in sequential samples, both in ZIKV PCR-positive as well as PCR-negative patients, making this a candidate assay for serological monitoring of pregnant women in future ZIKV outbreaks. Zika virus (ZIKV) is transmitted through the bite of infected Aedes mosquitos but can also be transmitted sexually or vertically from mother-to-child. The same mosquitoes transmit dengue virus (DENV) and chikungunya virus (CHIKV), which cause similar clinical syndromes. The ZIKV epidemics in the Pacific and the Americas that occurred between 2015 and 2017 were linked to congenital abnormalities, most prominently microcephaly, in newborns. Because most infections are asymptomatic, diagnosis via indirect serological assays is an important strategy. On the other hand, many serological assays are affected by cross-reactivity resulting from prior infections by closely related viruses, such as DENV. This study evaluated three commercially available and widely used immunoassays that detect IgG, IgM or IgA and M (IgAM) antibodies to ZIKV. Our results suggest that the IgAM test performs best by detecting around 90% of RT-PCR confirmed infections. We also detected additional infections that were not detected by RT-PCR. The strength of this study is that it was carried out in two different countries of the American region where several arboviruses are endemic and that sequential blood samples from individual patients were available to evaluate the performance of the tests over time.
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Affiliation(s)
- Ivonne Morales
- Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
- German Centre for Infection Research (DZIF), associated partner Heidelberg University Hospital, Heidelberg, Germany
| | - Kerstin D. Rosenberger
- Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
- German Centre for Infection Research (DZIF), associated partner Heidelberg University Hospital, Heidelberg, Germany
| | - Tereza Magalhaes
- Center for Vector-Borne Infectious Diseases (CVID), Department of Microbiology, Immunology and Pathology, Colorado State University (CSU), Fort Collins, Colorado, United States of America
| | - Clarice N. L. Morais
- Laboratory of Virology and Experimental Therapeutics, Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | - Cynthia Braga
- Department of Parasitology, Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
- Institute of Integral Medicine Professor Fernando Figueira (Instituto de Medicina Integral Professor Fernando Figueira-IMIP), Recife, Brazil
| | - Ernesto T. A. Marques
- Laboratory of Virology and Experimental Therapeutics, Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
- Department of Infectious Diseases, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Guilherme Amaral Calvet
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Luana Damasceno
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Patricia Brasil
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Adriana Tami
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, Groningen, The Netherlands
- Facultad de Ciencias de la Salud, Universidad de Carabobo,
Valencia, Venezuela
| | - Sarah Bethencourt
- Facultad de Ciencias de la Salud, Universidad de Carabobo,
Valencia, Venezuela
| | | | | | | | | | | | - Nguyen Than Ha Quyen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
| | - Cameron P. Simmons
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
- Institute for Vector-Borne Disease, Monash University, Melbourne, Australia
| | - Bridget Wills
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
- Centre for Tropical Medicine and Global Health, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom
| | - Xavier de Lamballerie
- Unité des Virus Emergents (UVE Aix Marseille Université, IRD 190, Inserm 1207-IHUMéditerranée Infection), Marseille, France
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Sechenov University, Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Moscow, Russia
- German Centre for Infection Research (DZIF), associated partner Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Jaenisch
- Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
- German Centre for Infection Research (DZIF), associated partner Heidelberg University Hospital, Heidelberg, Germany
- Heidelberg Institute of Global Health (HIGH), Heidelberg University Hospital, Heidelberg, Germany
- * E-mail:
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11
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Ponciano-Rodríguez G, Gaso MI, Armienta MA, Trueta C, Morales I, Alfaro R, Segovia N. Indoor radon exposure and excess of lung cancer mortality: the case of Mexico-an ecological study. Environ Geochem Health 2021; 43:221-234. [PMID: 32839955 DOI: 10.1007/s10653-020-00662-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/11/2019] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Radon is a radioactive gas that can migrate from soils and rocks and accumulate in indoor areas such as dwellings and buildings. Many studies have shown a strong association between the exposure to radon, and its decay products, and lung cancer (LC), particularly in miners. In Mexico, according to published surveys, there is evidence of radon exposure in large groups of the population, nevertheless, only few attention has been paid to its association as a risk factor for LC. The aim of this ecological study is to evaluate the excess risk of lung cancer mortality in Mexico due to indoor radon exposure. Mean radon levels per state of the Country were obtained from different publications and lung cancer mortality was obtained from the National Institute of Statistics, Geography and Informatics for the period 2001-2013. A model proposed by the International Commission on Radiological Protection to estimate the annual excess risk of LC mortality (per 105 inhabitants) per dose unit of radon was used. The average indoor radon concentrations found rank from 51 to 1863 Bq m-3, the higher average dose exposure found was 3.13 mSv year-1 in the north of the country (Chihuahua) and the mortality excess of LC cases found in the country was 10 ± 1.5 (range 1-235 deaths) per 105 inhabitants. The highest values were found mainly in the Northern part of the country, where numerous uranium deposits are found, followed by Mexico City, the most crowded and most air polluted area in the country. A positive correlation (r = 0.98 p < 0.0001) was found between the excess of LC cases and the dose of radon exposure. Although the excess risk of LC mortality associated with indoor radon found in this study was relatively low, further studies are needed in order to accurately establish its magnitude in the country.
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Affiliation(s)
- G Ponciano-Rodríguez
- Departamento de Salud Publica, Facultad de Medicina, UNAM, Ciudad Universitaria, 04510, Mexico, D.F., Mexico.
| | - M I Gaso
- ININ, Instituto Nacional de Investigaciones Nucleares, 52750, Ocoyoacac, Edo. México, Mexico
| | - M A Armienta
- IGFUNAM, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - C Trueta
- Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico, D.F., Mexico
| | - I Morales
- IGFUNAM, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - R Alfaro
- Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Mexico
| | - N Segovia
- SNI, Sistema Nacional de Investigadores, Mexico, Mexico
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12
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Klein S, Müller TG, Khalid D, Sonntag-Buck V, Heuser AM, Glass B, Meurer M, Morales I, Schillak A, Freistaedter A, Ambiel I, Winter SL, Zimmermann L, Naumoska T, Bubeck F, Kirrmaier D, Ullrich S, Barreto Miranda I, Anders S, Grimm D, Schnitzler P, Knop M, Kräusslich HG, Dao Thi VL, Börner K, Chlanda P. SARS-CoV-2 RNA Extraction Using Magnetic Beads for Rapid Large-Scale Testing by RT-qPCR and RT-LAMP. Viruses 2020; 12:E863. [PMID: 32784757 PMCID: PMC7472728 DOI: 10.3390/v12080863] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/31/2020] [Accepted: 08/05/2020] [Indexed: 01/01/2023] Open
Abstract
Rapid large-scale testing is essential for controlling the ongoing pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The standard diagnostic pipeline for testing SARS-CoV-2 presence in patients with an ongoing infection is predominantly based on pharyngeal swabs, from which the viral RNA is extracted using commercial kits, followed by reverse transcription and quantitative PCR detection. As a result of the large demand for testing, commercial RNA extraction kits may be limited and, alternatively, non-commercial protocols are needed. Here, we provide a magnetic bead RNA extraction protocol that is predominantly based on in-house made reagents and is performed in 96-well plates supporting large-scale testing. Magnetic bead RNA extraction was benchmarked against the commercial QIAcube extraction platform. Comparable viral RNA detection sensitivity and specificity were obtained by fluorescent and colorimetric reverse transcription loop-mediated isothermal amplification (RT-LAMP) using a primer set targeting the N gene, as well as RT-qPCR using a primer set targeting the E gene, showing that the RNA extraction protocol presented here can be combined with a variety of detection methods at high throughput. Importantly, the presented diagnostic workflow can be quickly set up in a laboratory without access to an automated pipetting robot.
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Affiliation(s)
- Steffen Klein
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- Schaller Research Groups, Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Thorsten G. Müller
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Dina Khalid
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Vera Sonntag-Buck
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Anke-Mareil Heuser
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Bärbel Glass
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Matthias Meurer
- Center for Molecular Biology of Heidelberg University (ZMBH), 69120 Heidelberg, Germany; (M.M.); (D.K.); (S.A.); (M.K.)
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Ivonne Morales
- Center of Infectious Diseases, Clinical Tropical Medicine, Heidelberg University Hospital, 69120 Heidelberg, Germany;
| | - Angelika Schillak
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Andrew Freistaedter
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Ina Ambiel
- Center of Infectious Diseases, Integrative Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany;
| | - Sophie L. Winter
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- Schaller Research Groups, Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Liv Zimmermann
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Tamara Naumoska
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Felix Bubeck
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Daniel Kirrmaier
- Center for Molecular Biology of Heidelberg University (ZMBH), 69120 Heidelberg, Germany; (M.M.); (D.K.); (S.A.); (M.K.)
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Stephanie Ullrich
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Isabel Barreto Miranda
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Simon Anders
- Center for Molecular Biology of Heidelberg University (ZMBH), 69120 Heidelberg, Germany; (M.M.); (D.K.); (S.A.); (M.K.)
| | - Dirk Grimm
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- German Center for Infection Research (DZIF), 69120 Heidelberg, Germany
| | - Paul Schnitzler
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
| | - Michael Knop
- Center for Molecular Biology of Heidelberg University (ZMBH), 69120 Heidelberg, Germany; (M.M.); (D.K.); (S.A.); (M.K.)
- German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Hans-Georg Kräusslich
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- German Center for Infection Research (DZIF), 69120 Heidelberg, Germany
| | - Viet Loan Dao Thi
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- Schaller Research Groups, Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Kathleen Börner
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- German Center for Infection Research (DZIF), 69120 Heidelberg, Germany
| | - Petr Chlanda
- Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany; (S.K.); (T.G.M.); (D.K.); (V.S.-B.); (A.-M.H.); (B.G.); (A.S.); (A.F.); (S.L.W.); (L.Z.); (T.N.); (F.B.); (S.U.); (I.B.M.); (D.G.); (P.S.); (H.-G.K.); (V.L.D.T.)
- Schaller Research Groups, Center of Infectious Diseases, Virology, Heidelberg University Hospital, 69120 Heidelberg, Germany
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Wilder-Smith A, Wei Y, de Araújo TVB, VanKerkhove M, Turchi Martelli CM, Turchi MD, Teixeira M, Tami A, Souza J, Sousa P, Soriano-Arandes A, Soria-Segarra C, Sanchez Clemente N, Rosenberger KD, Reveiz L, Prata-Barbosa A, Pomar L, Pelá Rosado LE, Perez F, Passos SD, Nogueira M, Noel TP, Moura da Silva A, Moreira ME, Morales I, Miranda Montoya MC, Miranda-Filho DDB, Maxwell L, Macpherson CNL, Low N, Lan Z, LaBeaud AD, Koopmans M, Kim C, João E, Jaenisch T, Hofer CB, Gustafson P, Gérardin P, Ganz JS, Dias ACF, Elias V, Duarte G, Debray TPA, Cafferata ML, Buekens P, Broutet N, Brickley EB, Brasil P, Brant F, Bethencourt S, Benedetti A, Avelino-Silva VL, Ximenes RADA, Alves da Cunha A, Alger J. Understanding the relation between Zika virus infection during pregnancy and adverse fetal, infant and child outcomes: a protocol for a systematic review and individual participant data meta-analysis of longitudinal studies of pregnant women and their infants and children. BMJ Open 2019; 9:e026092. [PMID: 31217315 PMCID: PMC6588966 DOI: 10.1136/bmjopen-2018-026092] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Zika virus (ZIKV) infection during pregnancy is a known cause of microcephaly and other congenital and developmental anomalies. In the absence of a ZIKV vaccine or prophylactics, principal investigators (PIs) and international leaders in ZIKV research have formed the ZIKV Individual Participant Data (IPD) Consortium to identify, collect and synthesise IPD from longitudinal studies of pregnant women that measure ZIKV infection during pregnancy and fetal, infant or child outcomes. METHODS AND ANALYSIS We will identify eligible studies through the ZIKV IPD Consortium membership and a systematic review and invite study PIs to participate in the IPD meta-analysis (IPD-MA). We will use the combined dataset to estimate the relative and absolute risk of congenital Zika syndrome (CZS), including microcephaly and late symptomatic congenital infections; identify and explore sources of heterogeneity in those estimates and develop and validate a risk prediction model to identify the pregnancies at the highest risk of CZS or adverse developmental outcomes. The variable accuracy of diagnostic assays and differences in exposure and outcome definitions means that included studies will have a higher level of systematic variability, a component of measurement error, than an IPD-MA of studies of an established pathogen. We will use expert testimony, existing internal and external diagnostic accuracy validation studies and laboratory external quality assessments to inform the distribution of measurement error in our models. We will apply both Bayesian and frequentist methods to directly account for these and other sources of uncertainty. ETHICS AND DISSEMINATION The IPD-MA was deemed exempt from ethical review. We will convene a group of patient advocates to evaluate the ethical implications and utility of the risk stratification tool. Findings from these analyses will be shared via national and international conferences and through publication in open access, peer-reviewed journals. TRIAL REGISTRATION NUMBER PROSPERO International prospective register of systematic reviews (CRD42017068915).
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Affiliation(s)
- Annelies Wilder-Smith
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Yinghui Wei
- Centre for Mathematical Sciences, University of Plymouth, Plymouth, UK
| | | | - Maria VanKerkhove
- Health Emergencies Programme, Organisation mondiale de la Sante, Geneve, Switzerland
| | | | - Marília Dalva Turchi
- Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiânia, Brazil
| | - Mauro Teixeira
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Adriana Tami
- Department of Medical Microbiology, University Medical Center Groningen, Groningen, The Netherlands
| | - João Souza
- Department of Social Medicine, University of São Paulo, São Paulo, Brazil
| | - Patricia Sousa
- Reference Center for Neurodevelopment, Assistance, and Rehabilitation of Children, State Department of Health of Maranhão, Sao Luís, Brazil
| | | | | | | | - Kerstin Daniela Rosenberger
- Department of Infectious Diseases, Section Clinical Tropical Medicine, UniversitatsKlinikum Heidelberg, Heidelberg, Germany
| | - Ludovic Reveiz
- Evidence and Intelligence for Action in Health, Pan American Health Organization, Washington, District of Columbia, USA
| | - Arnaldo Prata-Barbosa
- Department of Pediatrics, D’Or Institute for Research & Education, Rio de Janeiro, Brazil
| | - Léo Pomar
- Department of Obstetrics and Gynecology, Centre Hospitalier de l’Ouest Guyanais, Saint-Laurent du Maroni, French Guiana
| | | | - Freddy Perez
- Communicable Diseases and Environmental Determinants of Health Department, Pan American Health Organization, Washington, District of Columbia, USA
| | | | - Mauricio Nogueira
- Faculdade de Medicina de Sao Jose do Rio Preto, Department of Dermatologic Diseases, São José do Rio Preto, Brazil
| | - Trevor P. Noel
- Windward Islands Research and Education Foundation, St. George’s University, True Blue Point, Grenada
| | - Antônio Moura da Silva
- Department of Public Health, Universidade Federal do Maranhão – São Luís, São Luís, Brazil
| | | | - Ivonne Morales
- Department of Infectious Diseases, Section Clinical Tropical Medicine, UniversitatsKlinikum Heidelberg, Heidelberg, Germany
| | | | | | - Lauren Maxwell
- Reproductive Health and Research, World Health Organization, Geneva, Switzerland
- Hubert Department of Global Health, Emory University, Atlanta, Georgia, USA
| | - Calum N. L. Macpherson
- Windward Islands Research and Education Foundation, St. George’s University, True Blue Point, Grenada
| | - Nicola Low
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Zhiyi Lan
- McGill University Health Centre, McGill University, Montréal, Canada
| | | | - Marion Koopmans
- Department of Virology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Caron Kim
- Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
| | - Esaú João
- Department of Infectious Diseases, Hospital Federal dos Servidores do Estado, Rio de Janeiro, Brazil
| | - Thomas Jaenisch
- Department of Infectious Diseases, Section Clinical Tropical Medicine, UniversitatsKlinikum Heidelberg, Heidelberg, Germany
| | - Cristina Barroso Hofer
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paul Gustafson
- Statistics, University of British Columbia, British Columbia, Vancouver, Canada
| | - Patrick Gérardin
- INSERM CIC1410 Clinical Epidemiology, CHU La Réunion, Saint Pierre, Réunion
- UM 134 PIMIT (CNRS 9192, INSERM U1187, IRD 249, Université de la Réunion), Universite de la Reunion, Sainte Clotilde, Réunion
| | | | - Ana Carolina Fialho Dias
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vanessa Elias
- Sustainable Development and Environmental Health, Pan American Health Organization, Washington, District of Columbia, USA
| | - Geraldo Duarte
- Department of Gynecology and Obstetrics, University of São Paulo, São Paulo, Brazil
| | - Thomas Paul Alfons Debray
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - María Luisa Cafferata
- Mother and Children Health Research Department, Instituto de Efectividad Clinica y Sanitaria, Buenos Aires, Argentina
| | - Pierre Buekens
- School of Public Health and Tropical Medicine, Tulane University, New Orleans, USA
| | - Nathalie Broutet
- Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
| | - Elizabeth B. Brickley
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Patrícia Brasil
- Instituto de pesquisa Clínica Evandro Chagas, Fundacao Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Fátima Brant
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sarah Bethencourt
- Facultad de Ciencias de la Salud, Universidad de Carabobo, Valencia, Carabobo, Bolivarian Republic of Venezuela
| | - Andrea Benedetti
- Departments of Medicine and of Epidemiology, Biostatistics & Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Vivian Lida Avelino-Silva
- Department of Infectious and Parasitic Diseases, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | | | | | - Jackeline Alger
- Facultad de Ciencias Médicas, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
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Tjalma WAA, Brasseur C, Top G, Ribesse N, Morales I, Van Damme PA. HPV vaccination coverage in the federal state of Belgium according to regions and their impact. Facts Views Vis Obgyn 2018; 10:101-105. [PMID: 31110649 PMCID: PMC6516187] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Long-term results of the HPV vaccination programs in Australia and Scotland have shown a tremendous impact on the reduction of HPV infection rates and precancerous diseases. Both countries started mass vaccination ten years (Australia) and eight years (Scotland) ago and achieved a vaccination coverage of more than 80 %. Within 20 to 30 years a reduction in cervical cancer by more than 75 % is expected. Furthermore, there will be a reduction in other HPV related cancers like vaginal, vulva, perineal, anal and oropharyngeal cancers. In order to be successful, a high vaccination coverage is needed. In Belgium, the vaccination was introduced in 2010 in the Flemish community and in 2011 in the French community. In the first vaccinated cohorts the coverage in Flemish and French Communities was respectively 84% (2010) and 29% (2012-2013). The latest data suggest that the Flemish Community (Flanders Region) attained a coverage of 91 % while the French Community (Walloon Region) attained a coverage of around 36 %. The regional difference in coverage offers a real-life case. The worst-case scenario could end up with proportionally one half of country having more HPV related cancers than the other half. Currently efforts are performed to increase the coverage rates in both regions and consequently decreasing this difference. Additionally, the updated recommendations regarding the HPV vaccination by the Belgian NITAG (National Immunization Technical Advisory Group) stated that the HPV vaccination should be gender neutral. This could stimulate the vaccination program and increase the coverage. The coverage rate in Flanders is among the highest in the world and the rate in the French Community is increasing. Efforts should be continued in order to maintain trust and increase the coverage rate.
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Affiliation(s)
- WAA Tjalma
- Multidisciplinary Breast cancer clinic, Gynaecological Oncology Unit, Department of Obstetrics & Gynaecology, Antwerp University Hospital, University of Antwerp, Wilrijkstraat 10, 2650 Antwerpen, Belgium
| | - C Brasseur
- French Community, Immunization programme, Health department, Office of Birth and Childhood, Chaussée de Charleroi 95, B–1060 Bruxelles, Belgium
| | - G Top
- Infectious Disease Control and Vaccination, Flemish Agency for Care and Health, Ellipse Building, K. Albert II-laan 35, box 33, B-1030 Brussels, Belgium
| | - N Ribesse
- French community, School Health Services support, Health department, Office of Birth and Childhood, Chaussée de Charleroi 95, B-1060 Bruxelles, Belgium
| | - I Morales
- French Community, Immunization programme, Health department, Office of Birth and Childhood, Chaussée de Charleroi 95, B–1060 Bruxelles, Belgium
| | - PA Van Damme
- Centre for the Evaluation of Vaccination, Vaccine & Infectious Disease Institute, University of Antwerp, Campus 3 Eiken, Universiteitsplein, 1, 2610 Antwerpen, Belgium
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Torres E, López-Cerero L, Morales I, Navarro M, Rodríguez-Baño J, Pascual A. Prevalence and transmission dynamics of Escherichia coli ST131 among contacts of infected community and hospitalized patients. Clin Microbiol Infect 2018; 24:618-623. [DOI: 10.1016/j.cmi.2017.09.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 07/18/2017] [Accepted: 09/12/2017] [Indexed: 11/24/2022]
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Gómez-Cerezo N, Casarrubios L, Morales I, Feito MJ, Vallet-Regí M, Arcos D, Portolés MT. Effects of a mesoporous bioactive glass on osteoblasts, osteoclasts and macrophages. J Colloid Interface Sci 2018; 528:309-320. [PMID: 29859456 DOI: 10.1016/j.jcis.2018.05.099] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 04/18/2018] [Revised: 05/23/2018] [Accepted: 05/27/2018] [Indexed: 11/19/2022]
Abstract
A mesoporous bioactive glass (MBG) of molar composition 75SiO2-20CaO-5P2O5 (MBG-75S) has been synthetized as a potential bioceramic for bone regeneration purposes. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), nitrogen adsorption studies and transmission electron microscopy (TEM) demonstrated that MBG-75S possess a highly ordered mesoporous structure with high surface area and porosity, which would explain the high ionic exchange rate (mainly calcium and silicon soluble species) with the surrounded media. MBG-75S showed high biocompatibility in contact with Saos-2 osteoblast-like cells. Concentrations up to 1 mg/ml did not lead to significant alterations on either morphology or cell cycle. Regarding the effects on osteoclasts, MBG-75S allowed the differentiation of RAW-264.7 macrophages into osteoclast-like cells but exhibiting a decreased resorptive activity. These results point out that MBG-75S does not inhibit osteoclastogenesis but reduces the osteoclast bone-resorbing capability. Finally, in vitro studies focused on the innate immune response, evidenced that MBG-75S allows the proliferation of macrophages without inducing their polarization towards the M1 pro-inflammatory phenotype. This in vitro behavior is indicative that MBG-75S would just induce the required innate immune response without further inflammatory complications under in vivo conditions. The overall behavior respect to osteoblasts, osteoclasts and macrophages, makes this MBG a very interesting candidate for bone grafting applications in osteoporotic patients.
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Affiliation(s)
- N Gómez-Cerezo
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain
| | - L Casarrubios
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain
| | - I Morales
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain
| | - M J Feito
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain
| | - M Vallet-Regí
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain.
| | - D Arcos
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain.
| | - M T Portolés
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain.
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Diaz MC, Morales I, Durall I. An Experimental Study of Compression of Femoral Fractures by an Interlocking Intramedullary Pin. Vet Comp Orthop Traumatol 2018. [DOI: 10.1055/s-0038-1633026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryReturn of function and callus healing were investigated in a group of ten dogs after osteotomy of the femur treated by application of a pin, perfo-rated by threaded openings, through which a metal bar could be introduced into the trochanteric fossa. A jig, indicating the position of the openings, was attached and the distal fragment fixed with three screws into the pin; the fracture was then compressed by means of a compressor travelling from the base of the jig to rest against the bar inserted into the trochanteric fossa, approximating the proximal fragment to the distal one. Two screws were then inserted into the proximal fragment. The results revealed a full return of limb function between four and 16 days and consolidation of the callus between eight and 16 weeks.Femoral osteotomy was performed in a group of ten mongrel dogs weighing between 16 and 32 kg and stabilised with a pin, fixed with screws, which compressed the fracture. The results revealed return of normal limb function between four and 16 days later; consolidation of the callus was complete between eight and 16 weeks.
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Diaz M, Morales I, Durall I. Interlocking Nail Stabilisation of Humeral Fractures. Initial Experience in Seven Clinical Cases. Vet Comp Orthop Traumatol 2018. [DOI: 10.1055/s-0038-1633035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummarySeven cases of fracture of the humerus were stabilised by interlocking nailing. In six cases fixation was static, and in one dynamic. Healing of the fractures took place within a maximum of 16 weeks and return of functionality was complete within three weeks, with the exception of one case. The complications were: failure to insert the screws in the nail, partial loosening of a screw, and production of a new fracture at the distal end of the nail in the case with dynamic fixation.Seven humeral fractures were stabilised by interlocking nailing. Healing of bone took place in six cases.The complications involved were: failure to insert screws in the nail, loosening of the screws, and production of a fresh fracture at the distal end of the nail.
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Gálvez-Acebal J, López-Cortés L, Almendro M, Calvo Jambrina R, Mendez I, Araji O, Morales I, Barquero J. Resultados del manejo multidisciplinar de la endocarditis infecciosa en un hospital terciario. Cirugía Cardiovascular 2018. [DOI: 10.1016/j.circv.2017.12.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Jeffery N, Richards K, Athorn K, Morales I. 32IMPLEMENTATION OF A MEDICAL CHECKLIST TOOL TO IMPROVE THE QUALITY OF ELDERLY PATIENT CARE: A QUALITY IMPROVEMENT PROJECT. Age Ageing 2017. [DOI: 10.1093/ageing/afx055.32] [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: 11/12/2022] Open
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San-Juan R, Pérez-Montarelo D, Viedma E, Lalueza A, Fortún J, Loza E, Pujol M, Ardanuy C, Morales I, de Cueto M, Resino-Foz E, Morales-Cartagena MA, Fernández-Ruiz M, Rico A, Romero MP, Fernández de Mera M, López-Medrano F, Orellana MÁ, Aguado JM, Chaves F. Pathogen-related factors affecting outcome of catheter-related bacteremia due to methicillin-susceptible Staphylococcus aureus in a Spanish multicenter study. Eur J Clin Microbiol Infect Dis 2017; 36:1757-1765. [PMID: 28477236 DOI: 10.1007/s10096-017-2989-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 03/14/2017] [Accepted: 04/13/2017] [Indexed: 11/24/2022]
Abstract
Even with appropriate clinical management, complicated methicillin-susceptible Staphylococcus aureus (MSSA) catheter-related bacteremia (CRB) is frequent. We investigated the influence of molecular characteristics of MSSA strains on the risk of complicated bacteremia (CB) in MSSA-CRB. A multicenter prospective study was conducted in Spain between 2011 and 2014 on MSSA-CRB. Optimized protocol-guided clinical management was required. CB included endocarditis, septic thrombophlebitis, persistent bacteremia and/or end-organ hematogenous spread. Molecular typing, agr functionality and DNA microarray analysis of virulence factors were performed in all MSSA isolates. Out of 83 MSSA-CRB episodes included, 26 (31.3%) developed CB. MSSA isolates belonged to 16 clonal complexes (CCs), with CC30 (32.5%), CC5 (15.7%) and CC45 (13.3) being the most common. Comparison between MSSA isolates in episodes with or without CB revealed no differences regarding agr type and functionality. However, our results showed that CC15 and the presence of genes like cna, chp and cap8 were associated with the development of CB. The multivariate analysis highlighted that the presence of cna (Hazard ratio 2.9; 95% CI 1.14-7.6) was associated with the development of CB. Our results suggest that particular CCs and specific genes may influence the outcome of MSSA-CRB.
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Affiliation(s)
- R San-Juan
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain.
| | - D Pérez-Montarelo
- Department of Microbiology, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Madrid, Spain
| | - E Viedma
- Department of Microbiology, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Madrid, Spain
| | - A Lalueza
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain
| | - J Fortún
- Department of Infectious Diseases, University Hospital Ramón y Cajal, Madrid, Spain
| | - E Loza
- Department of Microbiology, University Hospital Ramón y Cajal, Madrid, Spain
| | - M Pujol
- Department of Infectious Diseases, University Hospital Bellvitge, Universidad de Barcelona-IDIBELL, Barcelona, Spain
| | - C Ardanuy
- Department of Microbiology, University Hospital Bellvitge, Universidad de Barcelona-IDIBELL, Barcelona, Spain
| | - I Morales
- Department of Infectious Diseases, University Hospital Virgen de la Macarena, Seville, Spain
| | - M de Cueto
- Department of Microbiology, University Hospital Virgen de la Macarena, Seville, Spain
| | - E Resino-Foz
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain
| | - M A Morales-Cartagena
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain
| | - M Fernández-Ruiz
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain
| | - A Rico
- Unit of Infectious Diseases, University Hospital La Paz, Madrid, Spain
| | - M P Romero
- Department of Microbiology, University Hospital La Paz, Madrid, Spain
| | - M Fernández de Mera
- Department of Microbiology, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Madrid, Spain
| | - F López-Medrano
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain
| | - M Á Orellana
- Department of Microbiology, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Madrid, Spain
| | - J M Aguado
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Avenida de Córsoba, s/n, 28041, Madrid, Spain
| | - F Chaves
- Department of Microbiology, University Hospital 12 de Octubre, Instituto de Investigación Hospital "12 de Octubre" (i+12), Universidad Complutense, Madrid, Spain
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Morales I, Salje H, Saha S, Gurley ES. Seasonal Distribution and Climatic Correlates of Dengue Disease in Dhaka, Bangladesh. Am J Trop Med Hyg 2016; 94:1359-61. [PMID: 27114293 DOI: 10.4269/ajtmh.15-0846] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 03/12/2016] [Indexed: 11/07/2022] Open
Abstract
Dengue has been regularly reported in Dhaka, Bangladesh, since a large outbreak in 2000. However, to date, we have limited information on the seasonal distribution of dengue disease and how case distribution correlates with climate. Here, we analyzed dengue cases detected at a private diagnostic facility in Dhaka during 2010-2014. We calculated Pearson cross-correlation coefficients to examine the relationship between the timing of cases and both rainfall and temperature. There were 2,334 cases diagnosed during the study period with 76% over the age of 15 years. Cases were reported in every month of the study; however, 90% of cases occurred between June and November. Increases in rainfall were correlated with increases in cases 2 months later (correlation of 0.7). The large proportion of adult cases is consistent with substantial population susceptibility and suggests Dhaka remains at risk for outbreaks. Although cases occurred year-round, public health preparedness should be focused during peak months.
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Affiliation(s)
- Ivonne Morales
- Section on Membrane and Cellular Biophysics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; Child Health Research Foundation, Department of Microbiology, Dhaka Shishu Hospital, Dhaka, Bangladesh; Department of Microbiology, Popular Diagnostic Centre, Dhaka, Bangladesh; International Center for Diarrheal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh; Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Paris, France
| | - Henrik Salje
- Section on Membrane and Cellular Biophysics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; Child Health Research Foundation, Department of Microbiology, Dhaka Shishu Hospital, Dhaka, Bangladesh; Department of Microbiology, Popular Diagnostic Centre, Dhaka, Bangladesh; International Center for Diarrheal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh; Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Paris, France
| | - Samir Saha
- Section on Membrane and Cellular Biophysics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; Child Health Research Foundation, Department of Microbiology, Dhaka Shishu Hospital, Dhaka, Bangladesh; Department of Microbiology, Popular Diagnostic Centre, Dhaka, Bangladesh; International Center for Diarrheal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh; Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Paris, France
| | - Emily S Gurley
- Section on Membrane and Cellular Biophysics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; Child Health Research Foundation, Department of Microbiology, Dhaka Shishu Hospital, Dhaka, Bangladesh; Department of Microbiology, Popular Diagnostic Centre, Dhaka, Bangladesh; International Center for Diarrheal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh; Mathematical Modelling of Infectious Diseases Unit, Institut Pasteur, Paris, France
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Chapela E, Quintero J, Félix-Alcántara M, Morales I, Javier C, Jorge G. Emotional intelligence in bipolar disorder. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
IntroductionEmotional intelligence is defined as the ability to process, understand and manage emotions. In bipolar disorder seem to be more conserved, with less functional impairment than other severe mental disorders as schizophrenia. So far, there are few studies analyzing emotional intelligence in bipolar disorder.ObjectiveThe objective of this research is to better understand the different characteristics and the factors affecting these social-cognitive dysfunctions in bipolar disorder.AimsTo explore possible factors related to emotional intelligence in these severe mental disorders: symptoms, cognitive functioning, quality of life and psychosocial function.Material and methodsTwenty-six adults bipolar type I patients were examined using MSCEIT (the most validated test for emotional intelligence), BPRS, YMRS, HDRS, WAIS-IV, TMT and Rey Figure in order to determine the level of emotional intelligence and factors relate.ResultsBipolar patients show lack of emotional intelligence when compared with general population. Cognitive impairment and age are the principal factors related.DiscussionResults are discussed and compared with recent literature.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Chapela E, Morales I, Quintero J, Félix-Alcántara M, Correas J, Gómez-Arnau J. Relationship between emotional intelligence and neurocognition in severe mental disorders. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
IntroductionThe severe mental disorders are the subject of growing research in the area of emotional intelligence because of his relationship with psychosocial functionality loss. Despite treatment advances, patients continue to experience high levels of social, professional and personal disabilities, related to the presence of deficits in cognition. These changes are manifested in two areas: the neurocognitive and social cognition.ObjectivesTo better understand the relationship between neuro- and sociocognition in schizophrenia and bipolar disorder.AimsThe aim of this research is to study the factors related to emotional intelligence, with particular interest in neurocognitive deficits.MethodsA total of 75 adult patients with schizophrenia and bipolar disorder type I were evaluated. The assessment protocol consisted of a questionnaire on socio-demographic and clinical-care data, and a battery of clinical and cognitive scales, including MSCEIT, WAIS-IV, TMT and Rey Figure.ResultsMSCEIT was negatively correlated with age, the severity of the clinical symptoms (BPRS, CGI-S), the TMT-A and the Test of Complex Figure, and positively with the intelligence quotient.ConclusionsThe deficits in emotional intelligence are part of a set of cognitive, social and non-social skills, which are altered in these severe mental disorders. Emotional intelligence worsens with the deterioration of cognitive functioning, executive dysfunction and severity of psychiatric disorder.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Abstract
Prostate cancer is very frequent, but secondary ureteral metastasis are extremely rare. We present a 55 year old man with a 2 month history of right flank pain and lower urinary tract symptoms. Prostatic specific antigen of 11.3 ng/mL. Computed tomography showed right hydroureteronephrosis, a developing urinoma and right iliac adenopathies. He underwent right ureteronephrectomy, iliac lymphadenectomy and prostate biopsy. Pathology revealed prostatic carcinoma infiltrating the ureteral muscularis propria, without mucosal involvement. There are 46 reported cases of prostate cancer with ureteral metastases. Ureteral metastasis are a rare cause of renal colic and need of a high index of suspicion.
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Affiliation(s)
- I Morales
- Department of Surgery, Universidad de los Andes, Santiago, Región Metropolitana, Chile
| | - C Bassa
- School of Medicine, Universidad de los Andes, Santiago, Región Metropolitana, Chile
| | - A Pavlovic
- Department of Public Health, Universidad de los Andes, Santiago, Región Metropolitana, Chile
| | - C Morales
- Department of Surgery, Universidad de los Andes, Santiago, Región Metropolitana, Chile
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Morales I, Henriquez D, Farias G, Maccioni R. Platelets tau mRNA isoforms in neurodegenerative diseases. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Marin M, Jurado R, Fernandez Chahill M, Alvarez M, Morales I, Martínez-Gras I, Ponce G, Jimenez-Arriero M, Moratti S, Rubio G. Correlation Between Clinical and Drinking Variables, and Psychophysiological Processes Involved in Alcohol Dependence. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)31897-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Garzón A, Budia F, Medina P, Morales I, Fereres A, Viñuela E. The effect of Chrysoperla carnea (Neuroptera: Chrysopidae) and Adalia bipunctata (Coleoptera: Coccinellidae) on the spread of cucumber mosaic virus (CMV) by Aphis gossypii (Hemiptera: Aphididae). Bull Entomol Res 2015; 105:13-22. [PMID: 25208589 DOI: 10.1017/s0007485314000534] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effects of two aphidophagous predators, the larvae of Chrysoperla carnea and adults of Adalia bipunctata, on the spread of cucumber mosaic virus (CMV) transmitted in a non-persistent manner by the cotton aphid Aphis gossypii were studied under semi-field conditions. Natural enemies and aphids were released inside insect-proof cages (1 m × 1 m × 1 m) with a central CMV-infected cucumber plant surrounded by 48 healthy cucumber seedlings, and the spatiotemporal dynamics of the virus and vector were evaluated in the short and long term (1 and 5 days) in the presence and absence of the natural enemy. The spatial analysis by distance indices methodology together with other indices measuring the dispersal around a single focus was used to assess the spatial pattern and the degree of association between the virus and its vector. Both natural enemies significantly reduced the number of aphids in the CMV-source plant after 5 days but not after 1 day. The CMV transmission rate was generally low, especially after 1 day, due to the limited movement of aphids from the central CMV-source plant, which increased slightly after 5 days. Infected plants were mainly located around the central virus-infected source plant, and the percentage of aphid occupation and CMV-infected plants did not differ significantly in absence and presence of natural enemies. The distribution patterns of A. gossypii and CMV were only coincident close to the central plant. The complexity of multitrophic interactions and the role of aphid predators in the spread of CMV are discussed.
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Affiliation(s)
- A Garzón
- Unidad de Protección de Cultivos,E. T. S. I. Agrónomos, UPM, Avenida Complutense, s/n, 28040 Madrid,Spain
| | - F Budia
- Unidad de Protección de Cultivos,E. T. S. I. Agrónomos, UPM, Avenida Complutense, s/n, 28040 Madrid,Spain
| | - P Medina
- Unidad de Protección de Cultivos,E. T. S. I. Agrónomos, UPM, Avenida Complutense, s/n, 28040 Madrid,Spain
| | - I Morales
- Unidad de Protección de Cultivos,E. T. S. I. Agrónomos, UPM, Avenida Complutense, s/n, 28040 Madrid,Spain
| | - A Fereres
- Instituto de Ciencias Agrarias,CSIC, Serrano 115 Dpdo, 28006 Madrid,Spain
| | - E Viñuela
- Unidad de Protección de Cultivos,E. T. S. I. Agrónomos, UPM, Avenida Complutense, s/n, 28040 Madrid,Spain
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Mauroy M, Lefevre S, Morales I. Développement psychomoteur des enfants : un programme de santé prioritaire de l’office de la naissance et de l’enfance (ONE). Sci Sports 2014. [DOI: 10.1016/j.scispo.2014.08.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sedano OL, Huamán J, Romero P, Gonzáles J, Morales I. AB0248 Application of targeted ultrasound initiative in management of rheumatoid arthritis in peruvian. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2571] [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: 11/04/2022]
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Galvez-Acebal J, Morales I, Georgieva R, Noureddine M, Ruiz-Morales J, Plata Ciezar A, Lomas-Cabezas J, Martínez-Marcos F, Hidalgo-Tenorio C, de la Torre-Lima J, Reguera J, Luque R, de Alarcon A. P50 STAPHYLOCOCCUS LUGDUNENSIS ENDOCARDITIS: MULTICENTER STUDY OF 17 CASES. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70074-8] [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: 11/26/2022]
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Mertens K, Morales I, Catry B. Infections acquired in intensive care units: results of national surveillance in Belgium, 1997-2010. J Hosp Infect 2013; 84:120-5. [PMID: 23639819 DOI: 10.1016/j.jhin.2013.02.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 02/10/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND AND AIM To describe the methodology and output of the Belgian surveillance for infections acquired in intensive care units (ICUs) between 1997 and 2010. METHODS Since 1997, ICUs in acute care hospitals in Belgium have been encouraged by federal law to participate in a national multi-centre prospective observational surveillance programme. A protocol and software tool for data collection was developed, and the case definitions and methodology follow those of the European Centre for Disease Prevention and Control. FINDINGS For 2010, 18 hospitals provided data on 59 observation quarters, 6478 ICU patients and 52,593 ICU patient-days. The mean incidence rates of ICU-acquired pneumonia and intubation-associated pneumonia were 13 per 1000 patient-days and 12 per 1000 intubation-days, respectively. The mean incidence rates of ICU-acquired bloodstream infections, central vascular catheter (CVC)-associated bloodstream infections and CVC-associated primary bloodstream infections were 3.2 per 1000 patient-days, 2.6 per 1000 catheter-days and 2.3 per 1000 catheter-days, respectively. Between 1997 and 2010, stable trends in ICU-acquired pneumonia and bloodstream infections were observed, together with decreasing trends for intubation-associated pneumonia and CVC-associated bloodstream infections, and a stable trend for CVC-associated primary bloodstream infections. CONCLUSIONS In Belgium, national surveillance of ICU-acquired infections allows acute care hospitals to track the incidence of infections at local level, enabling comparison with national and European reference data. Between 1997 and 2010, the incidence of ICU-acquired infections increased and the incidence of device-associated infections decreased.
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Affiliation(s)
- K Mertens
- Scientific Institute of Public Health, Brussels, Belgium.
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Ceysens G, Chaumont D, de Jonghe C, Fivet R, Hernandez A, Masson V, Mauroy MC, Morales I, Alexander S. [Not Available]. Rev Med Brux 2012; 33:503-504. [PMID: 23167144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Navarrete LP, Pérez P, Morales I, Maccioni RB. Novel drugs affecting tau behavior in the treatment of Alzheimer's disease and tauopathies. Curr Alzheimer Res 2012; 8:678-85. [PMID: 21605038 DOI: 10.2174/156720511796717122] [Citation(s) in RCA: 14] [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: 12/10/2010] [Revised: 04/13/2011] [Accepted: 04/17/2011] [Indexed: 11/22/2022]
Abstract
The anomalous aggregation of proteins into pathological filaments is a common feature of a many human diseases, often related to aging. In this context, neurodegenerative pathologies such as Alzheimer's disease (AD) account for a major part of these protein misfolding diseases. AD is characterized by pathological aggregation of two proteins, tau and Aβ-amyloid. The intracellular neurofibrillary tangles (NFTs) and neuropil threads consists of filaments of the modified microtubule-associated protein tau, while extracellular amyloid plaques consists of filaments of Aβ-peptide. It is noteworthy that tau oligomers with a prefilamentous structure appear to play a role at early stages of AD and tauopathies, but also in asymptomatic patients with Braak-stage I neuropathology, where clinical symptoms of AD and NFTs in frontal cortex are absent. This suggests that an increase in tau oligomers levels occurs before individuals manifest clinical symptoms of AD. NFTs are one of the hallmarks of Alzheimer disease and other tauphaties. These aggregates are thought to be toxic to neurons, either by causing some neurotoxic signalling defects or by obstructing the cell function. Factors contributing to accumulation of tau aggregates include the increased rate of protein misfolding, generation of amyloidogenic oligomers, underactivity of repair systems such as chaperones and ubiquitin-proteasome system, or a failure of energy supply and antioxidant defense mechanisms. There is not clear evidence if the aggregated tau or oligomers cause cellular damage, but on the basis of the emergent need to have an early and effective treatment, lowering the production or removal of these aggregates appears as a pathway toward alleviating the disease. In the context of some of most relevant reports, we analyze why tau protein seems to be an interesting target for AD treatment, and the importance to understand the pathways of tau. aggregation. This knowledge will allow us to identify and optimize potential inhibitors that interact with aggregated forms of tau and hyperphosphorylated tau before the formation of the NFTs, offering a possible therapeutic route for AD treatment.
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Affiliation(s)
- L P Navarrete
- Laboratory of Cellular and Molecular Neurosciences, University of Chile & International Center for Biomedicine, Edificio Milenio, Las Encinas 3370, Ñuñoa, Santiago, Chile.
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Rivera FP, Sotelo E, Morales I, Menacho F, Medina AM, Evaristo R, Valencia R, Carbajal L, Ruiz J, Ochoa TJ. Short communication: Detection of Shiga toxin-producing Escherichia coli (STEC) in healthy cattle and pigs in Lima, Peru. J Dairy Sci 2012; 95:1166-9. [PMID: 22365200 DOI: 10.3168/jds.2011-4662] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 11/13/2011] [Indexed: 12/18/2022]
Abstract
The aim of this study was to determine the prevalence of Shiga toxin-producing Escherichia coli (STEC) in cattle and pigs as a possible STEC reservoir in Lima, Peru. One hundred and fourteen cattle and 112 pigs from 10 and 4 farms, respectively, were studied. Five E. coli colonies per culture were studied by a multiplex real-time PCR to identify Shiga toxin-producing (stx1, stx2, eaeA), enterotoxigenic (lt, st), enteropathogenic (eaeA), enteroinvasive (ipaH), enteroaggregative (aggR), and diffusely adherent E. coli (daaD). Shiga toxin-producing E. coli were isolated from 16 cattle (14%) but none from pigs. stx1 was found in all bovine isolates, 11 of which also carried eaeA genes (69%); only 1 sample had both stx1 and stx2. Thirteen stx-positive strains were classified as Shiga-toxigenic (81%) using an enzymatic immunoassay, 2 STEC strains were from serogroup O157 (13%), and 7 were sorbitol negative (44%). Enteropathogenic E. coli were detected more frequently in cattle (18%, 20/114) than in pigs (5%, 6/112). To our knowledge, this is the first study on the prevalence of STEC in farms animals in Peru using molecular methods. Further studies are needed in a large number of farms to determine the relevance of these findings and its consequences for public health.
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Affiliation(s)
- F P Rivera
- Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430, San Martin de Porres, Lima 31, Peru
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Pinheiro AC, Rojas P, Carrasco F, Gómez P, Mayas N, Morales I. Acanthosis nigricans as an indicator of insulin resistance in Chilean adult population. NUTR HOSP 2012; 26:940-4. [PMID: 22072335 DOI: 10.1590/s0212-16112011000500003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Accepted: 11/16/2010] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Insulin resistance (IR) is associated with a higher risk of multiple diseases and its early detection would allow to minimize the associated risk; the presence of acanthosis nigricans (AN) it's associated to the presence of IR. OBJECTIVE To evaluate the sensibility and specificity of AN to diagnose IR in a group of Chilean patients. METHODS We designed a cross-sectional study and it was included subjects that were attended at the Center for the Attention of Metabolic Diseases at the Faculty of Medicine, University of Chile. Sixty subjects (18-60 years age) were included. It was determined BMI and diagnosed AN and skin phototype; blood samples were taken and calculated the HOMA-IR. The normality of the variables where analyzed by Kolmogorov-Smirnov test. There were used χ² and the diagnostic concordance between AN and IR was determined using the Kappa index and Pearson's correlation. Sensibility, specificity, positive and negative predictive value were calculated and accepted p<0.05. RESULTS The IR diagnose was 67% and AN was 43%. The major proportion of subjects diagnosed as positive for IR were also positive for AN (84.6%). The sensibility of AN to find IR was an 84% and specificity was 100%. Positive and negative predictive values were 100% and 89% respectively. It was observed a positive association between BMI and HOMA-IR (r=0.674; r²=0.454; p<0.001). CONCLUSION To detect acanthosis nigricans in Chilean population may be effective for the early diagnose of insulin resistance and, therefore, reduce the associated cost of the late treatment of glucose metabolic disturbances.
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Affiliation(s)
- A C Pinheiro
- Department of Nutrition, School of Nutrition and Dietetics, Faculty of Medicine, University of Chile, Santiago, Chile.
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Morales I, Catry B. Achievements of BSI hospital-wide surveillance in Belgium. BMC Proc 2011. [PMCID: PMC3239660 DOI: 10.1186/1753-6561-5-s6-p234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Hansen S, Sohr D, Geffers C, Astagneau P, Blacky A, Koller W, Morales I, Moro ML, Palomar M, Szilagyi E, Suetens C, Gastmeier P. The concordance of European and US definitions for healthcare-associated infections (HAI). BMC Proc 2011. [PMCID: PMC3239430 DOI: 10.1186/1753-6561-5-s6-o2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Figueroa JR, Ortiz J, Morales I. Use of the LightCycler SeptiFast test for rapid etiologic diagnosis of nosocomial infection in gynecological sepsis. Gynecol Obstet Invest 2010; 70:215-6. [PMID: 20639648 DOI: 10.1159/000318868] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Accepted: 03/17/2010] [Indexed: 11/19/2022]
Abstract
A new molecular biology technique was used in 2 subjects with systemic inflammatory response syndrome and negative blood cultures, in which broad-spectrum antibiotics were administered, without a visible improvement. Case 1: A 33-year-old female patient with a diagnosis of septic shock originating in the abdomen was admitted in a bad general state, presenting with systemic inflammatory response. The patient's general condition did not improve. As an alternative, we used molecular biology. Candida krusei was reported and the patient responded well to the treatment. Case 2: A woman in the 36th week of pregnancy, with diabetes mellitus and secondary renal insufficiency, presented with fever and hematological alterations. The patient's progress was slow and accompanied by persistent fever, bandemia and leukopenia, as well as signs of multiple organ dysfunction. The SeptiFast test identified Enterobacter cloacae/aerogenes as the cause of the disorder. However, the patient died 24 h after the antibiotics were changed.
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Affiliation(s)
- J Reyna Figueroa
- Department of Infectious Diseases, National Institute of Perinatology, México, Mexico. jesusreynaf @ prodigy.net.mx
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Morales I, Catry B, Mertens K. Surveillance of ICU-acquired infections in Belgium: 2008 reference data. Crit Care 2010. [PMCID: PMC2934026 DOI: 10.1186/cc8297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Morales I, Carbajal MA, Bohn S, Holzer D, Kato SEM, Greco FAB, Moussatché N, Krijnse Locker J. The vaccinia virus F11L gene product facilitates cell detachment and promotes migration. Traffic 2008; 9:1283-98. [PMID: 18485055 DOI: 10.1111/j.1600-0854.2008.00762.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [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: 12/23/2022]
Abstract
We previously showed that infection with vaccinia virus (VV) induces cell motility, characterized by contractility and directed migration. Motility is temporally regulated because cells are motile immediately after infection, whereas late in infection motility ceases and cells resettle. Motility and its cessation are accompanied by temporal rearrangements of both the microtubule and the actin networks. Because the F11L gene has previously been implicated in VV-induced migration, we now explore the role of F11L in contractility, migration, the cessation of motility and the cytoskeletal rearrangements. By live cell imaging using a VV that lacks an intact F11L gene, we show that F11L facilitates cell detachment and is required for migration but not for contractility. By light microscopy, F11L expression induces a remodeling of the actin, but not the microtubule, network. The lack of migration correlates with smaller plaques, indicating that this process facilitates cell-to-cell spreading of VV. Late in infection, when motility ceases, cells re-establish cell-to-cell contacts in an F11L-independent manner. We finally show that VV-induced motility and its cessation correlate with a temporal regulation of the guanosine triphosphatase RhoA as well as the expression levels of F11L during the infectious cycle.
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Affiliation(s)
- Ivonne Morales
- EMBL, Cell Biology and Biophysics Program, Meyerhofstrasse 1, 69117 Heidelberg, Germany
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Abstract
The authors propose a standard protocol of ultrasonographic exploration of the tarsal region in transversal and longitudinal planes, with the aim to spread with an accurate location of the anatomical structures. For this study, 10 adult horses of different races and ages (ranged 5-10 years) were used, with the characteristic of not having suffered any kind of tarsic pathology. The equipment was a real time ultrasound machine with a 7.5 mHz lineal transducer. Some different anatomical structures in this region of the hind-limb such as the tendons, ligaments, muscles and articular components were identified and labelled as regards their echoic characteristics.
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Affiliation(s)
- J M Vilar
- Department of Animal Pathology, Faculty of Veterinary of ULPGC, Las Palmas, Spain.
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Suetens C, Morales I, Savey A, Palomar M, Hiesmayr M, Lepape A, Gastmeier P, Schmit JC, Valinteliene R, Fabry J. European surveillance of ICU-acquired infections (HELICS-ICU): methods and main results. J Hosp Infect 2007; 65 Suppl 2:171-3. [PMID: 17540265 DOI: 10.1016/s0195-6701(07)60038-3] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- C Suetens
- HELICS-ICU data Centre, Epidemiology Unit, Scientific Institute of Public Health, Brussels, Belgium.
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Rodríguez M, Morales I, González-Mora JL, Gómez I, Sabaté M, Dopico JG, Rodríguez-Oroz MC, Obeso JA. Different levodopa actions on the extracellular dopamine pools in the rat striatum. Synapse 2007; 61:61-71. [PMID: 17117421 DOI: 10.1002/syn.20342] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Levodopa has been the mainstay treatment for Parkinson's disease for several decades, but the precise mechanism for its therapeutic action is still not well understood. To date, little distinction has been made between the effects of levodopa on the different brain DA pools. We studied the levodopa action on two extracellular DA pools: one was analyzed by microdialysis (often considered as indicative of volume transmission) and the other by in vivo amperometry during nigrostriatal cell stimulation (more indicative of neurotransmission). Levodopa administration induced a moderate (increased 200%) and tardy (began at 60 min) increase in the DA-pool measured by microdialysis, an effect that increased (increased 500%) and accelerated (began at 10 min) after DA-cell degeneration. Levodopa action on the DA-pool measured by amperometry was very fast (10 min) and prominent (increased 600%) in normal rats. The DA-denervated striatum showed a fast exhaustion during cell stimulation, which prevented further study of the levodopa effect on the DA amperometry-pool under this condition. This study suggests a different kinetic for levodopa action on the volume transmitter and neurotransmitter DA-pool, showing marked changes in levodopa action in the denervated striatum.
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Affiliation(s)
- M Rodríguez
- Laboratory of Neurobiology and Experimental Neurology, Department of Physiology, Faculty of Medicine, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain.
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Suetens C, Savey A, Palomar M, Hiesmayr M, Lepape A, Morales I, Gastmeier P, Schmit J, Valinteliene R, Fabry J. O320 European surveillance of ICU-acquired infections (HELICS-ICU), 2004–2005: ICU-acquired pneumonia. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70210-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Acosta O, Víquez F, Cubero E, Morales I. Ingredient Levels Optimization and Nutritional Evaluation of a Low-calorie Blackberry (Rubus irasuensis Liebm.) Jelly. J Food Sci 2006. [DOI: 10.1111/j.1750-3841.2006.00044.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Morales I, Versporten A, Suetens C. Crit Care 2006; 10:P124. [DOI: 10.1186/cc4471] [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: 11/10/2022] Open
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Smith R, Kaune H, Parodi D, Madariaga M, Rios R, Morales I, Castro A. Increased sperm DNA damage in patients with varicocele: relationship with seminal oxidative stress. Hum Reprod 2005; 21:986-93. [PMID: 16361286 DOI: 10.1093/humrep/dei429] [Citation(s) in RCA: 224] [Impact Index Per Article: 11.8] [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: 12/31/2022] Open
Abstract
BACKGROUND The pathophysiology of the testicular damage in varicocele has not been completely understood. Oxidative stress and related sperm DNA damage have been identified as significant causes of male infertility. The current study was designed to determine the extent of sperm nuclear DNA damage in patients with varicocele and to examine its relationship with oxidative stress. METHODS Semen samples from 55 patients with clinical varicocele and 25 normozoospermic donors were examined. Varicocele sperm samples were classified as normal or abnormal according to World Health Organization guidelines. Sperm DNA damage was evaluated by the sperm chromatin structure assay/flow cytometry and by the terminal deoxyribonucleotidyl transferase-mediated dUTP nick-end labelling (TUNEL) assay. Levels of reactive oxygen species (ROS) and total antioxidant capacity were assessed by a chemiluminescence assay. RESULTS DNA fragmentation index (DFI) (percentage of sperm with denatured DNA) values and the percentage of TUNEL-positive cells were significantly greater in patients with varicocele, either with normal (DFI, 20.7 +/- 4.0; TUNEL positive, 26.1 +/- 3.2) or with abnormal (DFI, 35.5 +/- 9.0; TUNEL positive, 32.2 +/- 4.1) semen profile, compared with controls (DFI, 7.1 +/- 0.9; TUNEL positive, 14.2 +/- 1.2). Similarly, ROS levels were significantly higher (P < 0.01) in both groups of patients with varicocele. CONCLUSIONS The presence of a varicocele is associated with high levels of DNA-damage spermatozoa even in the presence of normal semen profile. The results also indicate that oxidative damage is associated with sperm DNA damage in these patients.
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Affiliation(s)
- R Smith
- Institute of Maternal and Child Research, School of Medicine, University of Chile and San Borja-Arriarán Clinical Hospital, Santiago, Chile.
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Kienitz A, Vogel C, Morales I, Müller R, Bastians H. Partial downregulation of MAD1 causes spindle checkpoint inactivation and aneuploidy, but does not confer resistance towards taxol. Oncogene 2005; 24:4301-10. [PMID: 15782113 DOI: 10.1038/sj.onc.1208589] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The mitotic spindle assembly checkpoint ensures proper chromosome segregation during mitosis by inhibiting the onset of anaphase until all kinetochores are attached to the mitotic spindle and tension across the kinetochores is generated. Here, we report that the stable partial downregulation of the spindle checkpoint gene MAD1, which is observed in human cancer, leads to a functional inactivation of the spindle checkpoint resulting in gross aneuploidy. Interestingly, although Mad1 is thought to act as a kinetochore based activator of Mad2 during checkpoint activation, we show that normal levels of Mad2, but not of Mad1, are required for preventing premature sister chromatid separation and for maintaining the timing of an undisturbed mitosis, suggesting a Mad1 independent function of Mad2 that operates independent of its checkpoint function. Most significantly, a partial repression of either MAD1 or MAD2 confers resistance to nocodazole, a drug that inhibits microtubule attachment. In contrast, sensitivity to clinically relevant drugs like taxol or monastrol that inhibit the generation of tension across kinetochores is not modulated by partial downregulation of MAD1, suggesting a functional bifurcation of spindle checkpoint dependent apoptotic pathways.
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Affiliation(s)
- Anne Kienitz
- Institute for Molecular Biology and Tumor Research (IMT), Philipps University Marburg, Emil-Mannkopff-Strasse 2, D-35037 Marburg, Germany
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Gutierrez C, Corbera JA, Juste MC, Doreste F, Morales I. An outbreak of abortions and high neonatal mortality associated with Trypanosoma evansi infection in dromedary camels in the Canary Islands. Vet Parasitol 2005; 130:163-8. [PMID: 15893083 DOI: 10.1016/j.vetpar.2005.02.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2004] [Revised: 02/01/2005] [Accepted: 02/15/2005] [Indexed: 11/28/2022]
Abstract
Trypanosoma evansi was diagnosed for the first time in the Canary Islands (Spain) in 1998 in a dromedary camel. Seroprevalences of 4.8% up to 9% have been observed using different diagnostic methods. Affected animals have been treated but the dissemination of the disease is unknown. This article presents an outbreak of abortions and high neonatal mortality attributable to T. evansi infection in camels as well as the clinical assessment of the affected animals. The patients were diagnosed by routine checking (three pregnant animals), after abortion (five dams), or after delivered premature or weak calves (eight dams). At clinical examination, 2 out of 16 affected animals showed moderate signs of chronic form, particularly hyporexia and intolerance to exercise. The aborted fetuses were aged 6-8 months of gestation, approximately. The main laboratorial findings were regenerative anemia (haemolytic anemia), lymphocytic and monocytic leukocytosis, hyperproteinemia, hyperglobulinemia, hypoglycaemia, serum urea increased and serum iron decreased. Treatment using trypanocidal drug (Cymelarsan) resulted highly effective. Massive treatment would be recommended in the entire camel population in the Canary Islands (less than 2000 animals), as therapeutic or preventive measure, in order to control and to achieve an eventual eradication of the disease.
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Affiliation(s)
- C Gutierrez
- Department of Animal Medicine and Surgery, Veterinary Faculty, University of Las Palmas, 3416, Arucas, Las Palmas, Canary Islands, Spain.
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