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Marques J, Duarte-Ramos F, Ferreira MB, Lima R, Lopes C, Sokolova A, Tonin FS, Loureiro CC. Optimizing the use of systemic corticosteroids in severe asthma (ROSA II project): a national Delphi consensus study. Pulmonology 2023; 29:555-563. [PMID: 37543525 DOI: 10.1016/j.pulmoe.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 08/07/2023] Open
Affiliation(s)
- J Marques
- Immunology and Allergy Department, Centro Hospitalar e Universitário de Lisboa Central, EPE, Lisboa, Portugal; CEDOC, Integrated Pathophysiological Mechanisms Research Group, Lisboa, Portugal.
| | - F Duarte-Ramos
- Department of Pharmacy, Pharmacology and Health Technologies, Faculty of Pharmacy, University of Lisboa, Lisboa, Portugal; EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Portugal
| | - M B Ferreira
- Serviço de Imunoalergologia, Centro Hospitalar de Lisboa Norte, Lisboa, Portugal; Clínica Universitária de Imunoalergologia, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - R Lima
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, EPE, Vila Nova de Gaia, Portugal
| | - C Lopes
- Departamento do Tórax, Hospital de Santa Maria, Lisbon, Portugal
| | - A Sokolova
- Immunology and Allergy Department, Hospital Prof. Doutor Fernando Fonseca, EPE, Amadora, Portugal
| | - F S Tonin
- ESTeSL - Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal; H&TRC - Health & Technology Research Center, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - C C Loureiro
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra, Portugal; Centre of Pulmonology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Sokolova A, Johnstone KJ, McCart Reed AE, Simpson PT, Lakhani SR. Hereditary breast cancer: syndromes, tumour pathology and molecular testing. Histopathology 2023; 82:70-82. [PMID: 36468211 PMCID: PMC10953374 DOI: 10.1111/his.14808] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/12/2022] [Accepted: 09/18/2022] [Indexed: 12/09/2022]
Abstract
Hereditary factors account for a significant proportion of breast cancer risk. Approximately 20% of hereditary breast cancers are attributable to pathogenic variants in the highly penetrant BRCA1 and BRCA2 genes. A proportion of the genetic risk is also explained by pathogenic variants in other breast cancer susceptibility genes, including ATM, CHEK2, PALB2, RAD51C, RAD51D and BARD1, as well as genes associated with breast cancer predisposition syndromes - TP53 (Li-Fraumeni syndrome), PTEN (Cowden syndrome), CDH1 (hereditary diffuse gastric cancer), STK11 (Peutz-Jeghers syndrome) and NF1 (neurofibromatosis type 1). Polygenic risk, the cumulative risk from carrying multiple low-penetrance breast cancer susceptibility alleles, is also a well-recognised contributor to risk. This review provides an overview of the established breast cancer susceptibility genes as well as breast cancer predisposition syndromes, highlights distinct genotype-phenotype correlations associated with germline mutation status and discusses molecular testing and therapeutic implications in the context of hereditary breast cancer.
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Affiliation(s)
- A Sokolova
- Sullivan and Nicolaides PathologyBrisbane
- Centre for Clinical Research, Faculty of MedicineThe University of QueenslandBrisbane
| | - K J Johnstone
- Centre for Clinical Research, Faculty of MedicineThe University of QueenslandBrisbane
- Pathology Queensland, The Royal Brisbane and Women's HospitalBrisbaneQueenslandAustralia
| | - A E McCart Reed
- Centre for Clinical Research, Faculty of MedicineThe University of QueenslandBrisbane
| | - P T Simpson
- Centre for Clinical Research, Faculty of MedicineThe University of QueenslandBrisbane
| | - S R Lakhani
- Centre for Clinical Research, Faculty of MedicineThe University of QueenslandBrisbane
- Pathology Queensland, The Royal Brisbane and Women's HospitalBrisbaneQueenslandAustralia
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3
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Sokolova A, Kovaleva KS, Kuranov SO, Bormotov NI, Borisevich SS, Yarovaya OI, Zhukovets A, Serova OA, Nawrozkij MB, Vernigora AA, Davidenko AV, Khamitov EM, Peshkov RY, Shishkina LN, Maksuytov RA, Salakhutdinov NF. Design, synthesis and biological evaluation of novel (+)-сamphor and (-)-fenchone based derivatives as potent orthopoxviruses inhibitors. ChemMedChem 2022; 17:e202100771. [PMID: 35388614 DOI: 10.1002/cmdc.202100771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/31/2022] [Indexed: 11/10/2022]
Abstract
In this work, a library of (+)-camphor and (-)-fenchone based N-acylhydrazones, amides, and esters, including para-substituted aromatic/hetaromatic/cyclohexane ring was synthesized, with potent orthopoxvirus inhibitors identified among them. Investigations of the structure-activity relationship revealed the significance of the substituent at the para-position of the aromatic ring. Also, the nature of the linker between a hydrophobic moiety and aromatic ring was clarified. Derivatives with p-Cl, p-Br, p-CF3, and p-NO2 substituted aromatic ring and derivatives with cyclohexane ring showed the highest antiviral activity against vaccinia virus, cowpox, and ectromelia virus. The hydrazone and the amide group were more favourable as a linker for antiviral activity than the ester group. Compounds 3b and 7e with high antiviral activity were examined using the time-of-addition assay and molecular docking study. The results revealed the tested compounds to inhibit the late processes of the orthopoxvirus replication cycle and the p37 viral protein to be a possible biological target.
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Affiliation(s)
- Anastasiya Sokolova
- Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, Medicinal Chemistry, 9, Lavrent'ev avenue, 630090, Novosibirsk, RUSSIAN FEDERATION
| | - Kseniya S Kovaleva
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, RUSSIAN FEDERATION
| | - Sergey O Kuranov
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, SAINT KITTS AND NEVIS
| | - Nikolay I Bormotov
- VECTOR: State Research Center of Virology and Biotechnology, Prevention and Tretment of Highly Dangerous Infection, RUSSIAN FEDERATION
| | - Sophia S Borisevich
- Ufa Institute of Chemistry RAS: FGBUN Ufimskij Institut himii Rossijskoj akademii nauk, RAS, RUSSIAN FEDERATION
| | - Olga I Yarovaya
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, RUSSIAN FEDERATION
| | - Anastasiya Zhukovets
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, RUSSIAN FEDERATION
| | - Olga A Serova
- VECTOR: State Research Center of Virology and Biotechnology, Prevention and Treatment of Highly Dengerous Infection, RUSSIAN FEDERATION
| | - Maxim B Nawrozkij
- Volgograd State Technical University: Volgogradskij gosudarstvennyj tehniceskij universitet, Chemistry, RUSSIAN FEDERATION
| | - Andrey A Vernigora
- Volgograd State Technical University: Volgogradskij gosudarstvennyj tehniceskij universitet, Chemistry, RUSSIAN FEDERATION
| | - Andrey V Davidenko
- Volgograd State Technical University: Volgogradskij gosudarstvennyj tehniceskij universitet, Chemistry, RUSSIAN FEDERATION
| | - Eduard M Khamitov
- Ufa Institute of Chemistry RAS: FGBUN Ufimskij Institut himii Rossijskoj akademii nauk, Chemistry, RUSSIAN FEDERATION
| | - Roman Yu Peshkov
- Novosibirsk National Research State University: Novosibirskij gosudarstvennyj universitet, Natural Science, RUSSIAN FEDERATION
| | - Larisa N Shishkina
- VECTOR: State Research Center of Virology and Biotechnology, Prevention and Tretment of Highly Dangerous Infections, RUSSIAN FEDERATION
| | - Rinat A Maksuytov
- VECTOR: State Research Center of Virology and Biotechnology, Rospotrebnadzor, RUSSIAN FEDERATION
| | - Nariman F Salakhutdinov
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, Medicinal Chemistry, RUSSIAN FEDERATION
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4
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Rogalska E, Kuźma Ł, Wojszel ZB, Kurasz A, Napalkov D, Sokolova A, Tomaszuk-Kazberuk A. Atrial fibrillation is a predictor of nonobstructive coronary artery disease in elective angiography in old age: a cross-sectional study in Poland and Russia. Aging Clin Exp Res 2022; 34:175-183. [PMID: 34117626 PMCID: PMC8794909 DOI: 10.1007/s40520-021-01895-y] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/26/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Significant changes in the coronary vessels are not confirmed in a large proportion of patients undergoing cardiac catheterization. AIMS The present study aimed to determine correlates and independent predictors of nonobstructive coronary artery disease (CAD) in older adults referred for elective coronary angiography. METHODS A cross-sectional study was conducted involving 2,214 patients referred to two medical centers (in Poland and Russia) between 2014 and 2016 for elective coronary angiography due to exacerbated angina, despite undergoing optimal therapy for CAD. The median age was 72 years (IQR: 68-76), and 49.5% patients were women. RESULTS Significant stenosis (defined as stenosis of 50% or more of the diameter of the left main coronary artery stem or stenosis of 70% or more of the diameter of the remaining major epicardial vessels) was diagnosed only in 1135 (51.3%) patients. Female sex (odds ratio [OR], 3.01; 95% confidence interval [CI], 2.44-3.72; p < 0.001) and atrial fibrillation (OR, 1.87; 95% CI 1.45-2.40; p < 0.001) were the main independent predictors of nonobstructive CAD. Significantly lower ORs were observed for diabetes (OR, 0.75; 95% CI 0.59-0.95; p = 0.02), chronic kidney disease (OR, 0.76; 95% CI 0.61-0.96; p = 0.02), and anemia (OR, 0.69; 95% CI 0.50-0.95; p = 0.02) after controlling for age, chronic heart failure, BMI, and study center. DISCUSSION AND CONCLUSIONS The results confirmed that nonobstructive CAD occurs in a high percentage of older patients referred for elective coronary angiography. This suggests the need to improve patient stratification for invasive diagnosis of CAD, especially for older women and patients with atrial fibrillation. Trial registration number and date of registration: NCT04537507, September 3, 2020.
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Affiliation(s)
- Ewelina Rogalska
- Department of Cardiology, Medical University of Bialystok, M. Sklodowska-Curie Str. 24A, 15-276, Bialystok, Poland
| | - Łukasz Kuźma
- Department of Invasive Cardiology, Medical University of Bialystok, M. Sklodowska-Curie Str. 24A, 15-276, Bialystok, Poland.
| | - Zyta B Wojszel
- Department of Geriatrics, Medical University of Bialystok, Fabryczna Str. 27, 15-369, Bialystok, Poland
| | - Anna Kurasz
- Department of Invasive Cardiology, Medical University of Bialystok, M. Sklodowska-Curie Str. 24A, 15-276, Bialystok, Poland
| | - Dmitry Napalkov
- Department of Internal Diseases, I.M. Sechenov First Moscow State Medical University, Bol'shaya Pirogovskaya Ulitsa, 19c1, Moscow, Russia, 119146
| | - Anastasiya Sokolova
- Department of Internal Diseases, I.M. Sechenov First Moscow State Medical University, Bol'shaya Pirogovskaya Ulitsa, 19c1, Moscow, Russia, 119146
| | - Anna Tomaszuk-Kazberuk
- Department of Cardiology, Medical University of Bialystok, M. Sklodowska-Curie Str. 24A, 15-276, Bialystok, Poland
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Artyukov I, Arutyunov G, Bobrov M, Bukreeva I, Cedola A, Dragunov D, Feshchenko R, Fratini M, Mitrokhin V, Sokolova A, Vinogradov A, Gianoncelli A. Author Correction: The first observation of osmotically neutral sodium accumulation in the myocardial interstitium. Sci Rep 2021; 11:23632. [PMID: 34857872 PMCID: PMC8639728 DOI: 10.1038/s41598-021-02956-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- I Artyukov
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia.
| | - G Arutyunov
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - M Bobrov
- Moscow Regional Research and Clinical Institute (MONIKI), 61/2 Shchepkina St., Moscow, 129110, Russia
| | - I Bukreeva
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia.,CNR-Institute of Nanotechnology, 5 Piazzale Aldo Moro, 00185, Rome, Italy
| | - A Cedola
- CNR-Institute of Nanotechnology, 5 Piazzale Aldo Moro, 00185, Rome, Italy
| | - D Dragunov
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - R Feshchenko
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia
| | - M Fratini
- CNR-Institute of Nanotechnology, 5 Piazzale Aldo Moro, 00185, Rome, Italy
| | - V Mitrokhin
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - A Sokolova
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - A Vinogradov
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia
| | - A Gianoncelli
- Elettra-Sincrotrone Trieste, S.S. 14, km 163.5 in Area Science Park, 34149, Basovizza-Trieste, Italy
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6
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Artyukov I, Arutyunov G, Bobrov M, Bukreeva I, Cedola A, Dragunov D, Feshchenko R, Fratini M, Mitrokhin V, Sokolova A, Vinogradov A, Gianoncelli A. The first observation of osmotically neutral sodium accumulation in the myocardial interstitium. Sci Rep 2021; 11:22025. [PMID: 34764351 PMCID: PMC8585917 DOI: 10.1038/s41598-021-01443-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/28/2021] [Indexed: 11/08/2022] Open
Abstract
The aim of this study was the detection and quantification of the Na+ depositions in the extracellular matrix of myocardial tissue, which are suggested to be bound by negatively charged glycosaminoglycan (GAG) structures. The presented experimental results are based on high resolution X-ray fluorescence (XRF) spectromicroscopy technique used to perform a comparative analysis of sodium containment in intracellular and interstitial spaces of cardiac tissues taken from animals selected by low and high sodium intake rates. The experimental results obtained show that high sodium daily intake can result in a remarkable increase of sodium content in the myocardial interstitium.
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Affiliation(s)
- I Artyukov
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia.
| | - G Arutyunov
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - M Bobrov
- Moscow Regional Research and Clinical Institute (MONIKI), 61/2 Shchepkina St., Moscow, 129110, Russia
| | - I Bukreeva
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia
- CNR-Institute of Nanotechnology, 5 Piazzale Aldo Moro, 00185, Rome, Italy
| | - A Cedola
- CNR-Institute of Nanotechnology, 5 Piazzale Aldo Moro, 00185, Rome, Italy
| | - D Dragunov
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - R Feshchenko
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia
| | - M Fratini
- CNR-Institute of Nanotechnology, 5 Piazzale Aldo Moro, 00185, Rome, Italy
| | - V Mitrokhin
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - A Sokolova
- Pirogov Russian National Research Medical University, 1 Ostrovitianov St., Moscow, 117997, Russia
| | - A Vinogradov
- P.N.Lebedev Physical Institute RAS, 53 Leninsky Prospekt, Moscow, 119991, Russia
| | - A Gianoncelli
- Elettra-Sincrotrone Trieste, S.S. 14, km 163.5 in Area Science Park, 34149, Basovizza-Trieste, Italy
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Kruchinina M, Gromov A, Kruchinin V, Shashkov M, Sokolova A, Yakovina I, Shestov A. P-15 Diagnostic potential of erythrocyte and serum fatty acids in spotting adenomatous polyps and identifying the early stages of colorectal cancer depending on tumor localization. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.070] [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: 12/01/2022] Open
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8
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Limão R, Spínola Santos A, Araújo L, Cosme J, Inácio F, Tomaz E, Ferrão A, Santos N, Sokolova A, Môrete A, Falcão H, Cunha L, Ferreira A, Bras A, Ribeiro F, Lozoya C, Leiria Pinto P, Prates S, Plácido J, Coimbra A, Taborda-Barata L, Pereira Santos MC, Pereira Barbosa M, Pineda F. Molecular Sensitization Profile to Dermatophagoides pteronyssinus Dust Mite in Portugal. J Investig Allergol Clin Immunol 2020; 32:33-39. [PMID: 32732183 DOI: 10.18176/jiaci.0533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To analyze component resolved diagnosis to Dermatophagoides pteronyssinus (Der p) in patients with respiratory allergy and its relationship with clinical severity in different geographical areas. METHODS 217 patients (mean age 25.85±12.7 years; 51.16% females) were included, selected from 13 centers in Portugal (5 from North, n=65). All had allergic rhinitis, with or without asthma, and had positive skin prick tests to at least one dust mite. Specific IgE (sIgE) to Der p, Dermatophagoides farinae, Lepidoglyphus destructor, Der p1, Der p 2, Der p 10 and Der p 23 were determined by ImmunoCAP. Statistical analysis (Mann Whitney U test) compared patients with rhinitis vs rhinitis and asthma; mild vsmoderate-to-severe rhinitis; North vs South. RESULTS Prevalence of sensitization was 98.2% to Der p, and 72.4%, 89.4%, 9.7% and 77% to Der p 1, Der p 2, Der p 10 and Der p 23, respectively. Corresponding median sIgE levelswere 8.56, 17.7, 0.01 and 3.95 kUA/L. sIgE to all allergens was higher in patients with moderate-to-severe rhinitis and rhinitis with asthma but not statistically significant (NSS). sIgE to Der p 2 was significantly higher in the South when compared with the North (p=0.0496). CONCLUSIONS sensitization to Der p is the most common in Portugal. Der p 2 had the highest prevalence and median sIgE levels. All sIgE to molecular components were higher in more symptomatic patients (NSS). sIgE to Der p 2 was higher in the South, which may be related to the warmer temperature and/or the larger sample size.
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Affiliation(s)
- R Limão
- Immunoallergology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Portugal.,Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal
| | - A Spínola Santos
- Immunoallergology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Portugal.,Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal
| | - L Araújo
- Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal.,Immunoallergology Department, Faculdade de Medicina da Universidade do Porto, Portugal
| | - J Cosme
- Immunoallergology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Portugal.,Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal
| | - F Inácio
- Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal.,Immunoallergology Department, Hospital de São Bernardo, Setúbal, Portugal
| | - E Tomaz
- Immunoallergology Department, Hospital de São Bernardo, Setúbal, Portugal
| | - A Ferrão
- Immunoallergology Unit, Hospital do Espírito Santo de Évora, Portugal
| | - N Santos
- Immunoallergology Unit, Hospital de Portimão, Centro Hospitalar Universitário do Algarve, Portugal
| | - A Sokolova
- Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal.,Immunoallergology Unit, Hospital Professor Doutor Fernando Fonseca, Amadora-Sintra, Portugal
| | - A Môrete
- Immunoallergology Unit, Hospital de Aveiro, Centro Hospitalar Baixo Vouga, Portugal
| | - H Falcão
- Immunoallergology Department, Hospital de Santo António, Centro Hospitalar do Porto, Portugal
| | - L Cunha
- Immunoallergology Department, Hospital de Santo António, Centro Hospitalar do Porto, Portugal
| | - A Ferreira
- Immunoallergology Unit, Hospital das Forças Armadas, Lisboa, Portugal
| | - A Bras
- Immunoallergology Unit, Hospital de Faro, Centro Hospitalar Universitário do Algarve, Portugal
| | - F Ribeiro
- Immunoallergology Unit, Hospital de Faro, Centro Hospitalar Universitário do Algarve, Portugal
| | - C Lozoya
- Immunoallergology Unit, Unidade Local de Saúde de Castelo Branco, Portugal
| | - P Leiria Pinto
- Immunoallergology Department, Hospital Dona Estefânia, Centro Hospitalar Universitário de Lisboa Central, Portugal
| | - S Prates
- Immunoallergology Department, Hospital Dona Estefânia, Centro Hospitalar Universitário de Lisboa Central, Portugal
| | - J Plácido
- Immunoallergology Department, Centro Hospitalar Universitário de São João, Porto, Portugal
| | - A Coimbra
- Immunoallergology Department, Centro Hospitalar Universitário de São João, Porto, Portugal
| | - L Taborda-Barata
- Immunoallergology Department, Centro Hospitalar Universitário Cova da Beira, Covilhã, Portugal
| | - M C Pereira Santos
- Allergen and Immunotherapy Interest Group, Sociedade Portuguesa de Alergologia e Imunologia Clínica, Portugal.,Clinical Immunology Laboratory, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Portugal
| | - M Pereira Barbosa
- Immunoallergology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Portugal.,Clinical Immunology Laboratory, Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Portugal.,University Clinic of Immunoallergology, Faculdade de Medicina da Universidade de Lisboa, Portugal
| | - F Pineda
- Diater Laboratorio de Diagnostico y Aplicaciones Terapeuticas SA, Madrid, Spain
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9
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Kruchinina M, Gromov A, Kruchinin V, Shashkov M, Sokolova A, Yakovina I, Bannova N. P-3 Features of metabolic profiles of blood serum and erythrocyte membranes associated with metastasis in colorectal cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.085] [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: 11/25/2022] Open
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10
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Simpson P, McCart Reed A, Kutasovic J, Coorey C, Kuo L, Nguyen H, Pei W, Ong J, Sokolova A, Evans E, Porter A, Lakhani S. 52P Characterising clinicopathological and biological parameters predictive of outcome for patients diagnosed with invasive lobular carcinoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.186] [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: 11/29/2022] Open
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11
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Skripka A, Sychev D, Bochkov P, Shevchenko R, Krupenin P, Kogay V, Listratov A, Krainyaya A, Gurinovich O, Sokolova A, Napalkov D, Fomin V. Factors Affecting Trough Plasma Dabigatran Concentrations in Patients with Atrial Fibrillation and Chronic Kidney Disease. High Blood Press Cardiovasc Prev 2020; 27:151-156. [DOI: 10.1007/s40292-020-00373-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 03/18/2020] [Indexed: 01/04/2023] Open
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Sychev D, Skripka A, Ryzhikova K, Bochkov P, Shevchenko R, Krupenin P, Ivashchenko D, Kogay V, Listratov A, Krainyaya A, Gurinovich O, Sokolova A, Napalkov D, Fomin V. Effect of CES1 and ABCB1 genotypes on the pharmacokinetics and clinical outcomes of dabigatran etexilate in patients with atrial fibrillation and chronic kidney disease. Drug Metab Pers Ther 2020; 35:/j/dmdi.ahead-of-print/dmpt-2019-0029/dmpt-2019-0029.xml. [PMID: 32134727 DOI: 10.1515/dmpt-2019-0029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
Background Despite the well-studied safety profile of dabigatran, its interactions with genetic polymorphism parameters are poorly understood, especially in patients with moderate chronic kidney disease (CKD). The study assessed whether genetic factors can contribute to CKD and alter dabigatran concentration. Methods Patients with atrial fibrillation (AF) and stage 3 CKD treated with dabigatran 110 or 150 mg have been included in the study. Real-time polymerase chain reaction was used to evaluate single-nucleotide polymorphisms of the ABCB1 gene (rs1045642 and rs4148738) and CES1 gene (rs2244613). A plasma trough concentration/dose (C/D) ratio was used as a pharmacokinetic index. Results A total of 96 patients aged 51-89 years (median age: 75 years) were evaluated. Patients on a reduced regimen of 110 mg twice a day were older (79.8 vs. 67.9, p < 0.0001) and had lower creatinine clearance (49.7 vs. 62.3 mL/min/1.73 m2, p = 0.015). Patients with the rs2244613 CC genotype had lower C/D values (70% reduction in the mean C/D vs. AA genotype, p = 0.001). Linear stepwise regression has shown the CKD epidemiology collaboration to be the only significant predictor of C/D among genetic factors and kidney function characteristics. During the median follow-up of 15 months, there were 15 bleedings in 13 patients. Conclusions Polymorphism of CES1 rs2244613 can contribute to the safety of dabigatran in patients with AF and CKD. There was no influence of the aforementioned polymorphisms of ABCB1 on dabigatran trough plasma concentrations and C/D. Kidney function is a mainstay of clinical decision-making on direct oral anticoagulant (DOAC) dose, and further knowledge should be accumulated on the role of genetic factors.
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Affiliation(s)
- Dmitriy Sychev
- Russian Medical Academy of Continuous Professional Education, FGBOU DPO of the Ministry of Health of Russia, Department of Clinical Pharmacology and Therapy, Moscow, Russian Federation
| | - Alena Skripka
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Kristina Ryzhikova
- Russian Medical Academy of Continuous Professional Education, FGBOU DPO of the Ministry of Health of Russia, Department of Personalized Medicine, Research Center, Moscow, Russian Federation
| | - Pavel Bochkov
- Russian Medical Academy of Continuous Professional Education, FGBOU DPO of the Ministry of Health of Russia, Department of Personalized Medicine, Research Center, Moscow, Russian Federation
| | - Roman Shevchenko
- Russian Medical Academy of Continuous Professional Education, FGBOU DPO of the Ministry of Health of Russia, Department of Personalized Medicine, Research Center, Moscow, Russian Federation
| | - Pavel Krupenin
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Dmitriy Ivashchenko
- FGBOU DPO of the Ministry of Health of Russia, Department of Personalized Medicine, Department of Child Psychiatry and Psychotherapy, Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation
| | - Veronika Kogay
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Alexander Listratov
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Arina Krainyaya
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Olga Gurinovich
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Anastasiya Sokolova
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Dmitriy Napalkov
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
| | - Viktor Fomin
- I.M. Sechenov First Moscow State Medical University (Sechenov University), FGAOU VO of the Ministry of Health of Russia, Department of Faculty Therapy N1, Moscow, Russian Federation
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Abstract
Summary Atopic Dermatitis affects both children and adults and is a serious health concern in many countries. AD is a complex disease with host and environmental factors underlying its pathology. Its treatment is multidimensional reflecting the diverse nature of its triggers and includes emollients, topical steroids and calcineurin inhibitors among others. Immunological dysfunction can be addressed broadly with systemic immunosupressors and specifically with monoclonal antibodies. Dupilumab, which targets IL-4 and IL-13 was granted approval for treatment of moderate-to-severe AD. Biologics targeting IgE/Th2 pathways may have its role in patients with overlapping AD and asthma. Psychological distress can exacerbate symptoms and is associated with increased severity of AD. Environmental triggers, such as, allergens can be addressed in selected cases with allergic immunotherapy. In this paper, we discuss AD treatment and propose a new step-by-step approach aiming at maintaining disease control and improving quality of life.
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Affiliation(s)
- A Lopes
- Immunoallergology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte (CHLN), Lisbon, Portugal
| | - A Sokolova
- Immunoallergology Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - C Abreu
- Immunoallergology Department, Centro Hospitalar de Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | - C Lopes
- Allergy Unit, Pedro Hispano Hospital, Matosinhos, Portugal.,Basic and Clinical Immunology Laboratory, Medical School, Porto University, Portugal
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Mikova N, Sokolova A. Comparing data sources for identifying technology trends. Technology Analysis & Strategic Management 2019. [DOI: 10.1080/09537325.2019.1614157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- N. Mikova
- Institute for Statistical Studies and Economics of Knowledge, National Research University Higher School of Economics, Moscow, Russia
| | - A. Sokolova
- Institute for Statistical Studies and Economics of Knowledge, National Research University Higher School of Economics, Moscow, Russia
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15
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Kruchinina M, Gromov A, Prudnikova I, Shashkov M, Sokolova A, Kruchinin V, Yakovina I, Bannova N. Perturbation of fatty acids of erythrocyte membranes and blood serum in patients with colorectal cancer: new opportunities for diagnostics. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.002] [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: 11/14/2022] Open
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16
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Ivolgin D, Mikhailov V, Sokolova A. Stimulation of rats fetuses growth by transplantation of rats bone marrow cells or human umbilical cord blood cells during gastrulation. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.03.453] [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: 11/28/2022]
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17
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Kruchinina M, Gromov A, Prudnikova Y, Shashkov M, Sokolova A, Kruchinin V. Erythrocyte membrane fatty acids as the potential biomarkers for detection of early-stage and progression of colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.186] [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: 11/14/2022] Open
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18
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Sokolova A, Deen J, Perry-Keene J. A case of nonuraemic calciphylaxis presenting as a chronic ulcer in a diabetic patient. Pathology 2018. [DOI: 10.1016/j.pathol.2017.11.069] [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]
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Birchall A, Vostrotin V, Puncher M, Efimov A, Dorrian MD, Sokolova A, Napier B, Suslova K, Miller S, Zhdanov A, Strom DJ, Scherpelz R, Schadilov A. THE MAYAK WORKER DOSIMETRY SYSTEM (MWDS-2013) FOR INTERNALLY DEPOSITED PLUTONIUM: AN OVERVIEW. Radiat Prot Dosimetry 2017; 176:202. [PMID: 31945161 DOI: 10.1093/rpd/ncx195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- A Birchall
- Global Dosimetry Ltd., one Macdonald Close, Didcot, Oxon OX11 7BH, UK
| | - V Vostrotin
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - M Puncher
- Public Health England (PHE), Chilton, Didcot, UK
| | - A Efimov
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - M-D Dorrian
- Public Health England (PHE), Chilton, Didcot, UK
| | - A Sokolova
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - B Napier
- Pacific Northwest National Laboratory (PNNL), Richland, WA, USA
| | - K Suslova
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - S Miller
- University of Utah, Salt Lake City, UT, USA
| | - A Zhdanov
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - D J Strom
- Pacific Northwest National Laboratory (PNNL), Richland, WA, USA
| | - R Scherpelz
- Pacific Northwest National Laboratory (PNNL), Richland, WA, USA
| | - A Schadilov
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
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Birchall A, Vostrotin V, Puncher M, Efimov A, Dorrian MD, Sokolova A, Napier B, Suslova K, Miller S, Zhdanov A, Strom DJ, Scherpelz R, Schadilov A. THE MAYAK WORKER DOSIMETRY SYSTEM (MWDS-2013) FOR INTERNALLY DEPOSITED PLUTONIUM: AN OVERVIEW. Radiat Prot Dosimetry 2017; 176:10-31. [PMID: 31945164 DOI: 10.1093/rpd/ncx014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 01/23/2017] [Indexed: 06/10/2023]
Abstract
The Mayak Worker Dosimetry System (MWDS-2013) is a system for interpreting measurement data from Mayak workers from both internal and external sources. This paper is concerned with the calculation of annual organ doses for Mayak workers exposed to plutonium aerosols, where the measurement data consists mainly of activity of plutonium in urine samples. The system utilises the latest biokinetic and dosimetric models, and unlike its predecessors, takes explicit account of uncertainties in both the measurement data and model parameters. The aim of this paper is to describe the complete MWDS-2013 system (including model parameter values and their uncertainties) and the methodology used (including all the relevant equations) and the assumptions made. Where necessary, Supplementary papers which justify specific assumptions are cited.
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Affiliation(s)
- A Birchall
- Global Dosimetry Ltd., 1 Macdonald Close, Didcot, Oxon OX11 7BH, UK
| | - V Vostrotin
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - M Puncher
- Public Health England (PHE), Chilton, Didcot, UK
| | - A Efimov
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - M-D Dorrian
- Public Health England (PHE), Chilton, Didcot, UK
| | - A Sokolova
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - B Napier
- Pacific Northwest National Laboratory (PNNL), Richland, WA, USA
| | - K Suslova
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - S Miller
- University of Utah, Salt Lake City, UT, USA
| | - A Zhdanov
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
| | - D J Strom
- Pacific Northwest National Laboratory (PNNL), Richland, WA, USA
| | - R Scherpelz
- Pacific Northwest National Laboratory (PNNL), Richland, WA, USA
| | - A Schadilov
- Southern Urals Biophysics Institute (SUBI), Ozersk, Chelyabinsk Region, Russia
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Sokolova A, Haghshenas A, Frieri M. P048 Case report: anemic multiple myeloma patient with a panreatcvie comb’s test. Ann Allergy Asthma Immunol 2016. [DOI: 10.1016/j.anai.2016.09.056] [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: 10/20/2022]
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22
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Serra E Moura Garcia C, Sokolova A, Torre ML, Amaro C. Acute Hemorrhagic Edema of Infancy. Eur Ann Allergy Clin Immunol 2016; 48:22-26. [PMID: 26808448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Acute Hemorrhagic Edema of Infancy is a small vessel leucocytoclastic vasculitis affecting young infants. It is characterized by large, target-like, macular to purpuric plaques predominantly affecting the face, ear lobes and extremities. Non-pitting edema of the distal extremities and low-grade fever may also be present. Extra-cutaneous involvement is very rare. Although the lesions have a dramatic onset in a twenty-four to forty-eight hour period, usually the child has a non-toxic appearance. In most cases there are no changes in laboratory parameters. The cutaneous biopsy reveals an inflammatory perivascular infiltrate. It is a benign and auto-limited disease, with complete resolution within two to three weeks leaving no sequelae in the majority of cases. No recurrences are described. We report a case of a 42-day old girl admitted at our hospital with Acute Hemorrhagic Edema of Infancy.
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Affiliation(s)
- C Serra E Moura Garcia
- Department of Paediatrics, Hospital Prof. Doutor Fernando Fonseca EPE, Amadora, Portugal. E-Mail:
| | - A Sokolova
- Department of Paediatrics, Hospital Prof. Doutor Fernando Fonseca EPE, Amadora, Portugal
| | - M L Torre
- Department of Paediatrics, Hospital Prof. Doutor Fernando Fonseca EPE, Amadora, Portugal
| | - C Amaro
- Department of Dermatology, Hospital CurryCabral, Centro Hospitalar Lisboa Central, Lisbon, Portugal
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Janeiro M, Sokolova A, Meira Cruz M, Loureiro H. Sleep quality and asthma control in asthmatic children – Preliminary results. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.486] [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: 11/30/2022]
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Sokolova A, Bailey JJ, Waltz GT, Brewer LH, Finlay JA, Fornalik J, Wendt DE, Callow ME, Callow JA, Bright FV, Detty MR. Spontaneous multiscale phase separation within fluorinated xerogel coatings for fouling-release surfaces. Biofouling 2012; 28:143-157. [PMID: 22303880 DOI: 10.1080/08927014.2012.659244] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Four-component xerogel films consisting of 1 mole-% n-octadecyltrimethoxysilane (C18) and 50 mole-% tetraethoxysilane (TEOS) in combination with 1-24 mole-% tridecafluoro-1,1,2,2-tetrahydrooctyltriethoxysilane (TDF) and 25-48 mole-% n-octyltriethoxysilane (C8) and a 1:49:50 mole-% C18/TDF/TEOS were prepared. Settlement of barnacle cyprids and removal of juvenile barnacles, settlement of zoospores of the alga Ulva linza, and strength of attachment of 7-day sporelings (young plants) of Ulva were compared amongst the xerogel formulations. Several of the xerogel formulations were comparable to poly(dimethylsiloxane) elastomer with respect to removal of juvenile barnacles and removal of sporeling biomass. The 1:4:45:50 and 1:14:35:50 C18/TDF/C8/TEOS xerogels displayed some phase segregation by atomic force microscopy (AFM) pre- and post-immersion in water. Imaging reflectance infrared microscopy showed the formation of islands of alkane-rich and perfluoroalkane-rich regions in these same xerogels both pre- and post-immersion in water. Surface energies were unchanged upon immersion in water for 48 h amongst the TDF-containing xerogel coatings. AFM measurements demonstrated that surface roughness on the 1:4:45:50 and 1:14:35:50 C18/TDF/C8/TEOS xerogel coatings decreased upon immersion in water.
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Affiliation(s)
- Anastasiya Sokolova
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
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Sokolova A, Cilz N, Daniels J, Stafslien SJ, Brewer LH, Wendt DE, Bright FV, Detty MR. A comparison of the antifouling/foul-release characteristics of non-biocidal xerogel and commercial coatings toward micro- and macrofouling organisms. Biofouling 2012; 28:511-523. [PMID: 22616756 DOI: 10.1080/08927014.2012.690197] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Five non-biocidal xerogel coatings were compared to two commercial non-biocidal coatings and a silicone standard with respect to antifouling (AF)/fouling-release (FR) characteristics. The formation and release of biofilm of the marine bacterium Cellulophaga lytica, the attachment and release of the microalga Navicula incerta, and the fraction removal and critical removal stress of reattached adult barnacles of Amphibalanus amphitrite were evaluated in laboratory assays. Correlations of AF/FR performance with surface characteristics such as wettability, surface energy, elastic modulus, and surface roughness were examined. Several of the xerogel coating compositions performed well against both microfouling organisms while the commercial coatings performed less well toward the removal of microalgae. Reattached barnacle adhesion as measured by critical removal stress was significantly lower on the commercial coatings when compared to the xerogel coatings. However, two xerogel compositions showed release of 89-100% of reattached barnacles. These two formulations were also tested in the field and showed similar results.
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Affiliation(s)
- Anastasiya Sokolova
- Department of Chemistry and Materials Science and Engineering Program, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, USA
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Gunari N, Brewer LH, Bennett SM, Sokolova A, Kraut ND, Finlay JA, Meyer AE, Walker GC, Wendt DE, Callow ME, Callow JA, Bright FV, Detty MR. The control of marine biofouling on xerogel surfaces with nanometer-scale topography. Biofouling 2011; 27:137-149. [PMID: 21213155 DOI: 10.1080/08927014.2010.548599] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Mixtures of n-octadecyltrimethoxysilane (C18, 1-5 mole-%), n-octyltriethoxysilane (C8) and tetraethoxysilane (TEOS) gave xerogel surfaces of varying topography. The 1:49:50 C18/C8/TEOS xerogel formed 100-400-nm-wide, 2-7-nm deep pores by AFM while coatings with ≥3% C18 were free of such features. Segregation of the coating into alkane-rich and alkane-deficient regions in the 1:49:50 C18/C8/TEOS xerogel was observed by IR microscopy. Immersion in ASW for 48 h gave no statistical difference in surface energy for the 1:49:50 C18/C8/TEOS xerogel and a significant increase for the 50:50 C8/TEOS xerogel. Settlement of barnacle cyprids and removal of juvenile barnacles, settlement of zoospores of the alga Ulva linza, and strength of attachment of 7-day sporelings were compared amongst the xerogel formulations. Settlement of barnacle cyprids was significantly lower in comparison to glass and polystyrene standards. The 1:49:50 and 3:47:50 C18/C8/TEOS xerogels were comparable to PDMSE with respect to removal of juvenile barnacles and sporeling biomass, respectively.
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Affiliation(s)
- Nikhil Gunari
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
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Finlay JA, Bennett SM, Brewer LH, Sokolova A, Clay G, Gunari N, Meyer AE, Walker GC, Wendt DE, Callow ME, Callow JA, Detty MR. Barnacle settlement and the adhesion of protein and diatom microfouling to xerogel films with varying surface energy and water wettability. Biofouling 2010; 26:657-666. [PMID: 20645195 DOI: 10.1080/08927014.2010.506242] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Previous work has shown that organosilica-based xerogels have the potential to control biofouling. In this study, modifications of chemistry were investigated with respect to their resistance to marine slimes and to settlement of barnacle cyprids. Adhesion force measurements of bovine serum albumin (BSA)-coated atomic force microscopy (AFM) tips to xerogel surfaces prepared from aminopropylsilyl-, fluorocarbonsilyl-, and hydrocarbonsilyl-containing precursors, indicated that adhesion was significantly less on the xerogel surfaces in comparison to a poly(dimethylsiloxane) elastomer (PDMSE) standard. The strength of adhesion of BSA on the xerogels was highest on surfaces with the highest and the lowest critical surface tensions, gamma(C) and surface energies, gamma(S), and duplicated the 'Baier curve'. The attachment to and removal of cells of the diatom Navicula perminuta from a similar series of xerogel surfaces were examined. Initial attachment of cells was comparable on all of the xerogel surfaces, but the percentage removal of attached cells by hydrodynamic shear stress increased with gamma(C) and increased wettability as measured by the static water contact angle, theta(Ws), of the xerogel surfaces. The percentage removal of cells of Navicula was linearly correlated with both properties (R(2) = 0.74 for percentage removal as a function of theta(Ws) and R(2) = 0.69 for percentage removal as a function of gamma(C)). Several of the aminopropylsilyl-containing xerogels showed significantly greater removal of Navicula compared to a PDMSE standard. Cypris larvae of the barnacle B. amphitrite showed preferred settlement on hydrophilic/higher energy surfaces. Settlement was linearly correlated with theta(Ws) (R(2) = 0.84) and gamma(C) (R(2) = 0.84). Hydrophilic xerogels should prove useful as coatings for boats in regions where fouling is dominated by microfouling (protein and diatom slimes).
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Affiliation(s)
- John A Finlay
- School of Biosciences, The University of Birmingham, Edgbaston, Birmingham, UK
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Stanley WA, Sokolova A, Brown A, Clarke DT, Wilmanns M, Svergun DI. Synergistic use of synchrotron radiation techniques for biological samples in solution: a case study on protein-ligand recognition by the peroxisomal import receptor Pex5p. J Synchrotron Radiat 2004; 11:490-496. [PMID: 15496737 DOI: 10.1107/s090904950402504x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2004] [Accepted: 10/04/2004] [Indexed: 05/24/2023]
Abstract
Circular dichroism spectropolarimetry and X-ray scattering data, obtained using synchrotron radiation, can yield information about the secondary and tertiary structure of proteins in solution. These techniques have been used to analyse the architecture and shape of a complex of two proteins in solution. The crystal structures of two separate proteins, the C-terminal domain of Pex5p and SCP2, are available but their complex has not previously been structurally characterized. Circular dichroism spectropolarimetry indicated that complex formation requires little secondary structure rearrangement. X-ray scattering data fit an elongated irregular 'shoe'-shaped particle of the complex of the two proteins, with dimensions of the order of 30 A x 40 A x 90 A. Comparison with the known crystal structures suggests that this 'shoe' shape requires a conformational change of the C-terminus of SCP2 to appropriately locate its peroxisomal targeting signal type-1 recognition motif into the binding pocket of the Pex5p receptor. Implications of the combined use of synchrotron-based circular dichroism spectropolarimetry and X-ray scattering in structural biology and proteomics are discussed.
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Affiliation(s)
- W A Stanley
- EMBL-Hamburg, c/o DESY, Notkestrasse 85, 22603 Hamburg, Germany
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Abstract
Bacteriophage PRD1 is a prototype of viruses with an internal membrane. The icosahedral capsid and major coat protein share structural similarity with the corresponding structures of adenovirus. The present study further explores similarities between these viruses, considering the 5-fold vertex assemblies. The vertex structure of bacteriophage PRD1 consists of proteins P2, P5, and P31. The vertex complex mediates host cell binding and controls double-stranded DNA delivery. Quaternary structures and interactions of purified spike proteins were studied by synchrotron radiation x-ray solution scattering. Low resolution models of the vertex proteins P5, P2, and P31 were reconstructed ab initio from the scattering data. Protein P5 is a long trimer that resembles the adenovirus spike protein pIV. The receptor-binding protein P2 is a 15.5-nm long, thin monomer and does not have an adenovirus counterpart. P31 forms a pentameric base with a maximum diameter of 8.5 nm, which is thinner than the adenovirus penton pIII. P5 further polymerize into a nonameric form ((P5(3))(3)). In the presence of P31, P5 associates into a P5(6):P31 complex. The constructed models of these assemblies provided support for a model of vertex assembly onto the virion. Although similar in overall architecture, clear differences between PRD1 and adenovirus spike assemblies have been revealed.
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Affiliation(s)
- A Sokolova
- Institute of Crystallography, Russian Academy of Sciences, Moscow 117333, Russia
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