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Garrido M, Bordagaray MJ, Schweitzer C, Lucero-Mora J, Reyes M, Pellegrini E, Hernández-Ríos P, Fernández A, Hernández M. Reduced C-reactive protein levels after root canal treatment in clinically healthy young apical periodontitis individuals at cardiovascular risk. A prospective study. Int Endod J 2024; 57:406-415. [PMID: 38243897 DOI: 10.1111/iej.14029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 01/02/2024] [Accepted: 01/05/2024] [Indexed: 01/22/2024]
Abstract
AIM To determine the systemic inflammatory burden, including hsCRP and its monomeric forms, in patients with apical lesions of endodontic origin treated with root canal treatment (RCT). METHODOLOGY Prospective pre-/post-study. Apical periodontitis (AP) individuals aged 16-40 were included (N = 29). Individuals received RCT and were followed at 1 and 6 months. Fasting blood samples were obtained. Apical lesions of endodontic origin (ALEO) diameter (mm), and periapical index (PAI), were recorded. The serum concentrations of total hsCRP were determined by turbidimetry. Tumour necrosis factor (TNF)-α, interleukin (IL)-6, IL-10, IL-1β, and soluble (s) E-selectin were assessed by Multiplex assay. Additionally, mCRP forms were determined in the serum of AP patients with a baseline moderate to high cardiovascular risk based on hsCRP stratification (hsCRP ≥1 mg/L) by immunowestern blot (n = 15). Also, CRP isoforms were explored in ALEOs from AP individuals (n = 4). Data were analysed with StataV16. RESULTS Periapical index and ALEO sizes were reduced at both follow-up visits after RCT (p < .05). Serum levels of TNF-α, IL-6, IL-10, IL-1β, and sE-selectin did not show significant differences. CRP was borderline reduced at 1 month (p = .04); however, in AP individuals at cardiovascular risk (hsCRP ≥ 1 mg/L), hsCRP and its monomeric isoform significantly decreased at 1 and 6 months (p < .05). CONCLUSIONS High-sensitivity CRP and mCRP are reduced after RCT in AP individuals at cardiovascular risk.
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Affiliation(s)
- Mauricio Garrido
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - María José Bordagaray
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Catalina Schweitzer
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Joaquín Lucero-Mora
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Laboratory of Oral Biology, Faculty of Dentistry, Universidad Finis Terrae, Santiago, Chile
| | - Montserrat Reyes
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Elizabeth Pellegrini
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Patricia Hernández-Ríos
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | | | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
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Sanz-Muñoz I, Eiros JM, Hernández M. [Importance of National Influenza Centers in the surveillance of highly pathogenic avian viruses. The time for One-Health is now]. Rev Esp Quimioter 2024; 37:121-126. [PMID: 38205559 PMCID: PMC10945097 DOI: 10.37201/req/137.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024]
Abstract
Since 1996, the highly pathogenic avian influenza subtype A(H5N1) has been causing almost uninterrupted outbreaks in wild and domestic birds, as well as cases in humans with a mortality rate close to 50%. However, the years of greatest circulation have been precisely the years following the COVID-19 pandemic, in which several cases have been recorded in humans in places where they had never appeared before, in addition to multiple cases in wild, domestic and peri-domestic mammals, which raise some concern about the risk that the virus may jump to humans through chains of transmission of greater or lesser extent. The current outbreak of A(H5N1) shows us that the One-Health concept should be more alive than ever to join efforts between professionals from different sectors of human, animal and environmental health to avoid or minimize these risks, so that reference laboratories such as the National Influenza Centers have the human and material resources to provide rapid and relevant information in the shortest possible time before emergencies of this type. The diagnostic and monitoring tools to be used in these cases must be available for any eventuality, and going beyond the basic data must be an indispensable premise to be able to carry out a detailed monitoring that serves to limit outbreaks, limit the spread of the disease, and help in the design of future pandemic vaccines against avian viruses.
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Affiliation(s)
- I Sanz-Muñoz
- Dr. Iván Sanz-Muñoz, National Influenza Centre, Valladolid, Calle Rondilla de Santa Teresa s/n, Edificio Rondilla, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.
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Liu J, Yu J, Tan Y, Dang R, Zhou M, Hernández M, Lichtfouse E, Xiao L. Biomethane is produced by acetate cleavage, not direct interspecies electron transfer: genome-centric view and carbon isotope. Bioresour Technol 2023; 387:129589. [PMID: 37532062 DOI: 10.1016/j.biortech.2023.129589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/26/2023] [Accepted: 07/29/2023] [Indexed: 08/04/2023]
Abstract
Understanding the source of methane (CH4) is of great significance for improving the anaerobic fermentation efficiency in bioengineering, and for mitigating the emission potential of natural ecosystems. Microbes involved in the process named direct interspecies electron transfer coupling with CO2 reduction, i.e., electrons released from electroactive bacteria to reduce CO2 into CH4, have attracted considerable attention for wastewater treatment in the past decade. However, how the synergistic effect of microbiota contributes to this anaerobic carbon metabolism accompanied by CH4 production still remains poorly understood, especial for wastewater with antibiotic exposure. Results show that enhancing lower-abundant acetoclastic methanogens and acetogenic bacteria, rather than electroactive bacteria, contributed to CH4 production, based on a metagenome-assembled genomes network analysis. Natural and artificial isotope tracing of CH4 further confirmed that CH4 mainly originated from acetoclastic methanogenesis. These findings reveal the contribution of direct acetate cleavage (acetoclastic methanogenesis) and provide insightsfor further regulation of methanogenic strategies.
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Affiliation(s)
- Jian Liu
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, PR China
| | - Jiafeng Yu
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, PR China
| | - Yang Tan
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Run Dang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Meng Zhou
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, PR China
| | - Marcela Hernández
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - Eric Lichtfouse
- State Key Laboratory of Multiphase Flow in Power Engineering, International Research Center for Renewable Energy, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR China
| | - Leilei Xiao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
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Jiménez C, Fernández J, Aroca M, Bordagaray MJ, Pellegrini E, Contador J, Hernández M, Valenzuela F, Fernández A. Association of Periodontitis and Atopic Dermatitis with the Levels of IL-13, IL-31, and TSLP in the Gingival Crevicular Fluid. Int J Mol Sci 2023; 24:15592. [PMID: 37958576 PMCID: PMC10650793 DOI: 10.3390/ijms242115592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Emerging epidemiological evidence links atopic dermatitis (AD) and periodontitis, although the mechanisms remain unclear. Th2-derived cytokines are key in the development of both diseases, and different gingival crevicular fluid (GCF) profiles among healthy and diseased subjects have been previously reported. This case-control study examined the GCF levels of interleukins (IL)-13, IL-31, and thymic stromal lymphopoietin (TSLP) in 29 subjects with moderate-to-severe AD and 33 controls. All subjects underwent comprehensive clinical and oral evaluations, followed by GCF collection. GCF levels of IL-13, IL-31, and TSLP were assessed using a multiplex-bead immunoassay. Demographic and periodontal parameters were similar among groups (p > 0.05). The GCF levels of IL-31 and TSLP were higher in AD subjects compared to controls (p < 0.05), whereas no significant differences in the GCF levels of IL-13 were noticed (p = 0.377). Moderate-to-severe AD was positively associated with the GCF levels of IL-31 and TSLP, whereas severe periodontitis was negatively associated with IL-31 (p < 0.05). The GCF levels of IL-13 showed no significant associations with either condition (p = 0.689). There was no significant interaction between AD and periodontitis for IL-31 (p < 0.869). These results suggest that AD and periodontitis independently influence the GCF levels of IL-31 in opposing ways, whereas AD alone influences the levels of TSLP.
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Affiliation(s)
- Constanza Jiménez
- Faculty of Dentistry, Universidad Andres Bello, Echaurren 237, Santiago 8370133, Chile; (C.J.); (M.A.)
| | - Javier Fernández
- International Center for Clinical Studies (CIEC), Probity Medical Research, Manzano 343, Santiago 8420383, Chile;
| | - Marcela Aroca
- Faculty of Dentistry, Universidad Andres Bello, Echaurren 237, Santiago 8370133, Chile; (C.J.); (M.A.)
| | - María José Bordagaray
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Olivos 943, Santiago 8380544, Chile; (M.J.B.); (E.P.); (M.H.)
| | - Elizabeth Pellegrini
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Olivos 943, Santiago 8380544, Chile; (M.J.B.); (E.P.); (M.H.)
| | - Javier Contador
- Department of Dermatology, Faculty of Medicine, Universidad de Los Andes, Av. Plaza 2501, Santiago 7620157, Chile;
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Olivos 943, Santiago 8380544, Chile; (M.J.B.); (E.P.); (M.H.)
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, 943 Olivos Street, Santiago 8380544, Chile
| | - Fernando Valenzuela
- Department of Dermatology, Faculty of Medicine, Universidad de Los Andes, Av. Plaza 2501, Santiago 7620157, Chile;
| | - Alejandra Fernández
- Faculty of Dentistry, Universidad Andres Bello, Echaurren 237, Santiago 8370133, Chile; (C.J.); (M.A.)
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Fernández A, Herrera D, Hoare A, Hernández M, Torres VA. Lipopolysaccharides from Porphyromonas endodontalis and Porphyromonas gingivalis promote angiogenesis via Toll-like-receptors 2 and 4 pathways in vitro. Int Endod J 2023; 56:1270-1283. [PMID: 37461231 DOI: 10.1111/iej.13957] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 01/05/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 08/08/2023]
Abstract
AIM Angiogenesis contributes to the development of apical periodontitis, periodontitis, and other oral pathologies; however, it remains unclear how this process is triggered. The aim was to evaluate whether lipopolysaccharide (LPS) from Porphyromonas endodontalis and Porphyromonas gingivalis induced angiogenesis-related effects in vitro via TLR2 and TLR4. METHODOLOGY Porphyromonas endodontalis LPS (ATCC 35406 and clinical isolate) was purified with TRIzol, whereas P. gingivalis LPS was obtained commercially. The effects of the different LPS (24 h) in endothelial cell migration were analysed by Transwell assays, following quantification in an optical microscope (40×). The effects of LPS on FAK Y397 phosphorylation were assessed by Western blotting. Angiogenesis in vitro was determined in an endothelial tube formation assay (14 h) in Matrigel in the absence or presence of either LPS. IL-6 and VEGF-A levels were determined in cell supernatants, following 24 h treatment with LPS, and measured in multiplex bead immunoassay. The involvement of TLR2 and TLR4 was assessed with blocking antibodies. The statistical analysis was performed using STATA 12® (StataCorp LP). RESULTS The results revealed that P. endodontalis LPS, but not P. gingivalis LPS, stimulated endothelial cell migration. Pre-treatment with anti-TLR2 and anti-TLR4 antibodies prevented P. endodontalis LPS-induced cell migration. P. endodontalis LPS promoted FAK phosphorylation on Y397, as observed by an increased p-FAK/FAK ratio. Both P. gingivalis and P. endodontalis LPS (ATCC 35406) induced endothelial tube formation in a TLR-2 and -4-dependent manner, as shown by using blocking antibodies, however, only TLR2 blocking decreased tube formation induced by P. endodontalis (clinical isolate). Moreover, all LPS induced IL-6 and VEGF-A synthesis in endothelial cells. TLR2 and TLR4 were required for IL-6 induction by P. endodontalis LPS (ATCC 35406), while only TLR4 was involved in IL-6 secretion by the other LPS. Finally, VEGF-A synthesis did not require TLR signalling. CONCLUSION Porphyromonas endodontalis and P. gingivalis LPS induced angiogenesis via TLR2 and TLR4. Collectively, these data contribute to understanding the role of LPS from Porphyromonas spp. in angiogenesis and TLR involvement.
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Affiliation(s)
- Alejandra Fernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Daniela Herrera
- Faculty of Dentistry, Institute for Research in Dental Sciences, Universidad de Chile, Santiago, Chile
| | - Anilei Hoare
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Laboratory of Oral Microbiology and Immunology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Vicente A Torres
- Faculty of Dentistry, Institute for Research in Dental Sciences, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Santiago, Chile
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Ramírez V, Weber L, Hernández M, Realini O, Bendek MJ, Busso D, Hoare A, Illanes SE, Chaparro A. Obesity is related to maternal periodontitis severity in pregnancy: a cross-sectional study. Clin Oral Investig 2023; 27:5509-5518. [PMID: 37505241 DOI: 10.1007/s00784-023-05170-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023]
Abstract
OBJECTIVES To evaluate the relationship between obesity and periodontitis staging compared with periodontal healthy or gingivitis in pregnant women. MATERIALS AND METHODS An analytical cross-sectional study was conducted on pregnant women between 11 and 14 weeks of pregnancy. Sociodemographic, clinical, obstetric, and periodontal variables were studied. The exposure variable was obesity (body mass index [BMI] ≥ 30), and the primary outcome was periodontitis staging versus periodontal healthy/gingivitis. Data were analysed and estimated by multinomial logistic regression models. RESULTS The present study screened 1086 pregnancies and analysed 972 women with a median age of 29 years; 36.8% were diagnosed as obese. 26.9% of patients were diagnosed as periodontal healthy or gingivitis, 5.5% with stage I periodontitis, 38.6% with stage II periodontitis, 24% with stage III periodontitis, and 5.1% with stage IV periodontitis. After identifying and adjusting for confounding variables (educational level and plaque index), obesity had a relative risk ratio (RRR) of 1.66 (95% CI: 1.05-2.64; p = 0.03) and 1.57 (95% CI: 1.09-2.27; p = 0.015) for stage III periodontitis compared to periodontal healthy/gingivitis and stage II periodontitis, respectively. CONCLUSION Besides the already known risk indicators for periodontitis (age, smoking, and educational level), our study suggests a relationship between obesity and periodontitis staging in pregnancy. CLINICAL RELEVANCE Obesity can alter host immune responses, leading to increased susceptibility to infections and overactive host immunity, which could influence the prevalence and severity of maternal periodontitis in pregnancy.
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Affiliation(s)
- Valeria Ramírez
- Department of Biomedical Sciences, Ethics, Research and Education, Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
| | - Laura Weber
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile
| | - Marcela Hernández
- Department of Pathology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Ornella Realini
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile
| | - María José Bendek
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile
- PhD Program in Biomedicine, School of Medicine, Universidad de los Andes, Santiago, Chile
| | - Dolores Busso
- Laboratory of Reproductive Biology, Biomedical Research and Innovation Center, Universidad de los Andes, Santiago, Chile
| | - Anilei Hoare
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Sebastián Enrique Illanes
- Laboratory of Reproductive Biology, Biomedical Research and Innovation Center, Universidad de los Andes, Santiago, Chile
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universidad de Los Andes, Santiago, Chile
| | - Alejandra Chaparro
- Department of Pathology and Conservative Dentistry, Faculty of Dentistry, Universidad de Los Andes, Av. Plaza 2501, Las Condes, 7620157, Santiago, Chile.
- Biomedical Research and Innovation Center, Santiago, Chile.
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Vera-Gargallo B, Hernández M, Dumont MG, Ventosa A. Correction: Thrive or survive: prokaryotic life in hypersaline soils. Environ Microbiome 2023; 18:35. [PMID: 37081520 PMCID: PMC10116760 DOI: 10.1186/s40793-023-00491-z] [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] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- Blanca Vera-Gargallo
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012, Sevilla, Spain
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Marcela Hernández
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Marc G Dumont
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
| | - Antonio Ventosa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012, Sevilla, Spain.
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Hernández M, Roy S, Keevil CW, Dumont MG. Identification of diverse antibiotic resistant bacteria in agricultural soil with H 218O stable isotope probing combined with high-throughput sequencing. Environ Microbiome 2023; 18:34. [PMID: 37072776 PMCID: PMC10111737 DOI: 10.1186/s40793-023-00489-7] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/28/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND We aimed to identify bacteria able to grow in the presence of several antibiotics including the ultra-broad-spectrum antibiotic meropenem in a British agricultural soil by combining DNA stable isotope probing (SIP) with high throughput sequencing. Soil was incubated with cefotaxime, meropenem, ciprofloxacin and trimethoprim in 18O-water. Metagenomes and the V4 region of the 16S rRNA gene from the labelled "heavy" and the unlabelled "light" SIP fractions were sequenced. RESULTS An increase of the 16S rRNA copy numbers in the "heavy" fractions of the treatments with 18O-water compared with their controls was detected. The treatments resulted in differences in the community composition of bacteria. Members of the phyla Acidobacteriota (formally Acidobacteria) were highly abundant after two days of incubation with antibiotics. Pseudomonadota (formally Proteobacteria) including Stenotrophomonas were prominent after four days of incubation. Furthermore, a metagenome-assembled genome (MAG-1) from the genus Stenotrophomonas (90.7% complete) was retrieved from the heavy fraction. Finally, 11 antimicrobial resistance genes (ARGs) were identified in the unbinned-assembled heavy fractions, and 10 ARGs were identified in MAG-1. In comparison, only two ARGs from the unbinned-assembled light fractions were identified. CONCLUSIONS The results indicate that both non-pathogenic soil-dwelling bacteria as well as potential clinical pathogens are present in this agricultural soil and several ARGs were identified from the labelled communities, but it is still unclear if horizontal gene transfer between these groups can occur.
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Affiliation(s)
- Marcela Hernández
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK
- School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Shamik Roy
- School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
| | - C William Keevil
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Marc G Dumont
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
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Ding C, Xu X, Liu Y, Huang X, Xi M, Liu H, Deyett E, Dumont MG, Di H, Hernández M, Xu J, Li Y. Diversity and assembly of active bacteria and their potential function along soil aggregates in a paddy field. Sci Total Environ 2023; 866:161360. [PMID: 36610629 DOI: 10.1016/j.scitotenv.2022.161360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/23/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Numerous studies have found that soil microbiomes differ at the aggregate level indicating they provide spatially heterogeneous habitats for microbial communities to develop. However, an understanding of the assembly processes and the functional profile of microbes at the aggregate level remain largely rudimentary, particularly for those active members in soil aggregates. In this study, we investigated the diversity, co-occurrence network, assembly process and predictive functional profile of active bacteria in aggregates of different sizes using H218O-based DNA stable isotope probing (SIP) and 16S rRNA gene sequencing. Most of the bacterial reads were active with 91 % of total reads incorporating labelled water during the incubation. The active microbial community belonged mostly of Proteobacteria and Actinobacteria, with a relative abundance of 55.32 % and 28.12 %, respectively. Assembly processes of the active bacteria were more stochastic than total bacteria, while the assembly processes of total bacteria were more influenced by deterministic processes. Furthermore, many functional profiles such as environmental information processing increased in active bacteria (19.39 %) compared to total bacteria (11.22 %). After incubation, the diversity and relative abundance of active bacteria of certain phyla increased, such as Proteobacteria (50.70 % to 59.95 %), Gemmatimonadetes (2.63 % to 4.11 %), and Bacteroidetes (1.50 % to 2.84 %). In small macroaggregates (SMA: 0.25-2 mm), the active bacterial community and its assembly processes differed from that of other soil aggregates (MA: microaggregates, <0.25 mm; LMA: large macroaggregates, 2-4 mm). For functional profiles, the relative abundance of important functions, such as amino acid metabolism, signal transduction and cell motility, increased with incubation days and/or in SMA compared to other aggregates. This study provides robust evidence that the community of active bacteria and its assembly processes in soil aggregates differed from total bacteria, and suggests the importance of dominant active bacteria (such as Proteobacteria) for the predicted functional profiles in the soil ecosystem.
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Affiliation(s)
- Chenxiao Ding
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xinji Xu
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yaowei Liu
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xing Huang
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - MengYuan Xi
- Department of Botany and Plant Sciences, University of California, Riverside 92521, USA
| | - Haiyang Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China
| | - Elizabeth Deyett
- Department of Botany and Plant Sciences, University of California, Riverside 92521, USA
| | - Marc G Dumont
- School of Biological Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Hongjie Di
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Marcela Hernández
- School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - Jianming Xu
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yong Li
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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Vera-Gargallo B, Hernández M, Dumont MG, Ventosa A. Thrive or survive: prokaryotic life in hypersaline soils. Environ Microbiome 2023; 18:17. [PMID: 36915176 PMCID: PMC10012753 DOI: 10.1186/s40793-023-00475-z] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Soil services are central to life on the planet, with microorganisms as their main drivers. Thus, the evaluation of soil quality requires an understanding of the principles and factors governing microbial dynamics within it. High salt content is a constraint for life affecting more than 900 million hectares of land, a number predicted to rise at an alarming rate due to changing climate. Nevertheless, little is known about how microbial life unfolds in these habitats. In this study, DNA stable-isotope probing (DNA-SIP) with 18O-water was used to determine for the first time the taxa able to grow in hypersaline soil samples (ECe = 97.02 dS/m). We further evaluated the role of light on prokaryotes growth in this habitat. RESULTS We detected growth of both archaea and bacteria, with taxon-specific growth patterns providing insights into the drivers of success in saline soils. Phylotypes related to extreme halophiles, including haloarchaea and Salinibacter, which share an energetically efficient mechanism for salt adaptation (salt-in strategy), dominated the active community. Bacteria related to moderately halophilic and halotolerant taxa, such as Staphylococcus, Aliifodinibius, Bradymonadales or Chitinophagales also grew during the incubations, but they incorporated less heavy isotope. Light did not stimulate prokaryotic photosynthesis but instead restricted the growth of most bacteria and reduced the diversity of archaea that grew. CONCLUSIONS The results of this study suggest that life in saline soils is energetically expensive and that soil heterogeneity and traits such as exopolysaccharide production or predation may support growth in hypersaline soils. The contribution of phototrophy to supporting the heterotrophic community in saline soils remains unclear. This study paves the way toward a more comprehensive understanding of the functioning of these environments, which is fundamental to their management. Furthermore, it illustrates the potential of further research in saline soils to deepen our understanding of the effect of salinity on microbial communities.
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Affiliation(s)
- Blanca Vera-Gargallo
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012, Sevilla, Spain
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Marcela Hernández
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Marc G Dumont
- School of Biological Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
| | - Antonio Ventosa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012, Sevilla, Spain.
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Ferrandis R, Escontrela B, Ferrando C, Hernández M, Herrera J, Hidalgo F, Librero J, Llau JV, Martínez A, Pajares A, Tapia B, Arruti E, Bassas E, Blasi A, Calvo A. Effectiveness of thromboprophylaxis with low molecular weight heparin in critically ill patients with COVID-19. An observational prospective, multicenter study. Rev Esp Anestesiol Reanim (Engl Ed) 2023; 70:129-139. [PMID: 36842685 PMCID: PMC9957653 DOI: 10.1016/j.redare.2023.02.004] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 01/09/2022] [Indexed: 04/12/2023]
Abstract
INTRODUCTION COVID-19 induces coagulopathy associated with an increase of thromboembolic events. Due to the lack of agreement on recommendations for thromboprophylactic management, the aim of this study was to study the dosages of LMWH used in critically ill COVID-19 patients assessing the effect on their outcome. METHODS We evaluated data of the Reg-COVID19. According to LMWH dose two groups were analyzed: prophylaxis and treatment. Primary outcome was the relationship of LMWH dosage with mortality. Secondary outcomes included the incidence of thrombotic and bleeding events, length of ICU stay, invasive mechanical ventilation, and thrombotic and inflammatory parameters. RESULTS Data of 720 patients were analyzed, 258 in the prophylaxis group and 462 in the treatment group. C Reactive Protein, invasive mechanical ventilation, tocilizumab and corticosteroid treatments were related with the choice of LMWH dose. Hemorrhagic events (66/720, 9.2%) and thrombotic complications (69/720, 9.6%) were similar in both groups (p = .819 and p = .265), as was the time course of the thrombotic events, earlier than hemorrhagic ones (9 [3-18] and 12 [6-19] days respectively). Mortality was lower in prophylaxis group (25.2% versus 35.1%), but once an inverse probability weighting model was applied, we found no effect of LMWH dose. CONCLUSION We found no benefit or harm with the administration of therapeutic or prophylactic LMWH dose in COVID19 critically ill patients. With a similar rate of hemorrhagic or thrombotic events, the LMWH dose had no influence on mortality. More studies are needed to determine the optimal thromboprophylaxis protocol for critically ill patients.
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Affiliation(s)
- R Ferrandis
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitari i Politècnic La Fe, Valencia, Spain.
| | - B Escontrela
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario Infanta Leonor, Madrid, Spain
| | - C Ferrando
- Departamento de Anestesiología y Cuidados Críticos, Hospital Clínic, Institut d'Investigacions Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, España, CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - M Hernández
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario de Cruces, Barakaldo, Vizcaya, Spain
| | - J Herrera
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario de Cruces, Barakaldo, Vizcaya, Spain
| | - F Hidalgo
- Departamento de Anestesiología y Cuidados Críticos, Clínica Universidad de Navarra, Pamplona, Navarra, Spain
| | - J Librero
- Navarrabiomed, Complejo Hospitalario de Navarra-Universidad Pública de Navarra, IDISNA, Pamplona, Navarra, Spain
| | - J V Llau
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario Doctor Peset, Valencia, Spain
| | - A Martínez
- Jefe de Servicio de Anestesiología y Cuidados Críticos, Hospital Universitario Cruces, Barakaldo, Vizcaya, Spain
| | - A Pajares
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - B Tapia
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario La Paz, Madrid, Spain
| | - E Arruti
- Innovation and Technology Area, Ubikare SL, Getxo, Vizcaya, Spain
| | - E Bassas
- Departamento de Anestesiología y Cuidados Críticos, Hospital Moisès Broggi, Sant Joan Despí, Barcelona, Spain
| | - A Blasi
- Departamento de Anestesiología y Cuidados Críticos, Hospital Clínic, Institut d'Investigacions Biomèdica Agust Pi i Sunyer (IDIBAPS), Universidad de Barcelona, Barcelona, Spain
| | - A Calvo
- Departamento de Anestesiología y Cuidados Críticos, Hospital Clínic, Institut d'Investigacions Biomèdica Agust Pi i Sunyer (IDIBAPS), Universidad de Barcelona, Barcelona, Spain
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12
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Ferrandis R, Escontrela B, Ferrando C, Hernández M, Herrera J, Hidalgo F, Librero J, Llau J, Martínez A, Pajares A, Tapia B, Arruti E, Bassas E, Blasi A, Calvo A. [Effectiveness of thromboprophylaxis with low molecular weight heparin in critically ill patients with COVID-19. An observational prospective, multicenter study]. Rev Esp Anestesiol Reanim 2023; 70:129-139. [PMID: 35340761 PMCID: PMC8938174 DOI: 10.1016/j.redar.2022.01.014] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 01/09/2022] [Indexed: 11/05/2022]
Abstract
Introduction COVID-19 induces coagulopathy associated with an increase of thromboembolic events. Due to the lack of agreement on recommendations for thromboprophylactic management, the aim of this study was to study the dosages of LMWH used in critically ill COVID-19 patients assessing the effect on their outcome. Metohds We evaluated data of the Reg-COVID19. According to LMWH dose two groups were analyzed: prophylaxis and treatment. Primary outcome was the relationship of LMWH dosage with mortality. Secondary outcomes included the incidence of thrombotic and bleeding events, length of ICU stay, invasive mechanical ventilation, and thrombotic and inflammatory parameters. Results Data of 720 patients were analyzed, 258 in the prophylaxis group and 462 in the treatment group. C Reactive Protein, invasive mechanical ventilation, tocilizumab and corticosteroid treatments were related with the choice of LMWH dose. Hemorrhagic events (66/720, 9.2%) and thrombotic complications (69/720, 9.6%) were similar in both groups (P=.819 and P=.265), as was the time course of the thrombotic events, earlier than hemorrhagic ones (9 [3-18] and 12 [6-19] days respectively). Mortality was lower in prophylaxis group (25.2% versus 35.1%), but once an inverse probability weighting model was applied, we found no effect of LMWH dose. Conclusion We found no benefit or harm with the administration of therapeutic or prophylactic LMWH dose in COVID19 critically ill patients. With a similar rate of hemorrhagic or thrombotic events, the LMWH dose had no influence on mortality. More studies are needed to determine the optimal thromboprophylaxis protocol for critically ill patients.
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Affiliation(s)
- R. Ferrandis
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitari i Politècnic La Fe, Valencia, España,Autor para correspondencia
| | - B. Escontrela
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario Infanta Leonor, Madrid, España
| | - C. Ferrando
- Departamento de Anestesiología y Cuidados Críticos, Hospital Clínic, Institut d’Investigacions Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, España, CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, España
| | - M. Hernández
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario de Cruces, Barakaldo, Vizcaya, España
| | - J. Herrera
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario de Cruces, Barakaldo, Vizcaya, España
| | - F. Hidalgo
- Departamento de Anestesiología y Cuidados Críticos. Clínica Universidad de Navarra, Pamplona, Navarra, España
| | - J. Librero
- Navarrabiomed, Complejo Hospitalario de Navarra-Universidad Pública de Navarra, IDISNA, Pamplona, Navarra, España
| | - J.V. Llau
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario Doctor Peset, Valencia, España
| | - A. Martínez
- Jefe de Servicio de Anestesiología y Cuidados Críticos, Hospital Universitario Cruces, Barakaldo, Vizcaya, España
| | - A. Pajares
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitari i Politècnic La Fe, Valencia, España
| | - B. Tapia
- Departamento de Anestesiología y Cuidados Críticos, Hospital Universitario La Paz, Madrid, España
| | - E. Arruti
- Innovation and Technology Area, Ubikare SL, Getxo, Vizcaya, España
| | - E. Bassas
- Departamento de Anestesiología y Cuidados Críticos, Hospital Moisès Broggi, Sant Joan Despí, Barcelona, España
| | - A. Blasi
- Departamento de Anestesiología y Cuidados Críticos, Hospital Clínic, Institut d’Investigacions Biomèdica Agust Pi i Sunyer (IDIBAPS), Universidad de Barcelona, Barcelona, España
| | - A. Calvo
- Departamento de Anestesiología y Cuidados Críticos, Hospital Clínic, Institut d’Investigacions Biomèdica Agust Pi i Sunyer (IDIBAPS), Universidad de Barcelona, Barcelona, España
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Zhu X, Deng Y, Hernández M, Fang J, Xing P, Liu Y. Distinct responses of soil methanotrophy in hummocks and hollows to simulated glacier meltwater and temperature rise in Tibetan glacier foreland. Sci Total Environ 2023; 862:160888. [PMID: 36521618 DOI: 10.1016/j.scitotenv.2022.160888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Glacier foreland soils are known to be essential methane (CH4) consumers. However, global warming and increased glacier meltwater have turned some foreland meadows into swamp meadows. The potential impact of this change on the function of foreland soils in methane consumption remains unclear. Therefore, we collected Tibetan glacier foreland soils in the non-melting season from typical microtopography in swamp meadows (hummock and hollow). Three soil moisture conditions (moist, saturated, and submerged) were set by adding glacier runoff water. Soil samples were then incubated in the laboratory for two weeks at 10 °C and 20 °C. About 5 % of 13CH4/12CH4 was added to the incubation bottles, and daily methane concentrations were measured. DNA stable isotope probing (DNA-SIP) and high-throughput sequencing were combined to target the active methanotroph populations. The results showed that type Ia methanotrophs, including Crenothrix, Methylobacter, and an unclassified Methylomonadaceae cluster, actively oxidized methane at 10 °C and 20 °C. There were distinct responses of methanotrophs to soil moisture rises in hummock and hollow soils, resulting in different methane oxidation potentials. In both hummock and hollow soils, the methane oxidation potential was positively correlated with temperature. Furthermore, saturated hummock soils exhibited the highest methane oxidation potential and methanotroph populations, while submerged hollow soils had the lowest. This suggests that the in-situ hummock soils, generally saturated with water, are more essential than in-situ hollows, typically submerged in water, for alleviating the global warming potential of swamp meadows in the Tibetan glacier foreland during the growing season.
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Affiliation(s)
- Xinshu Zhu
- School of Geography, Nanjing Normal University, Nanjing 210023, China
| | - Yongcui Deng
- School of Geography, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China.
| | - Marcela Hernández
- School of Biological Sciences, University of East Anglia, Norwich, Norfolk NR4 7TJ, United Kingdom
| | - Jie Fang
- School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China
| | - Peng Xing
- Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yongqin Liu
- Center for the Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
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14
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Hernández M. Letters in Applied Microbiology-a new vision. Lett Appl Microbiol 2023; 76:6986065. [PMID: 36763791 DOI: 10.1093/lambio/ovac050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- Marcela Hernández
- University of East Anglia, School of Biological Sciences, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
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15
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Ni G, Lappan R, Hernández M, Santini T, Tomkins AG, Greening C. Functional basis of primary succession: Traits of the pioneer microbes. Environ Microbiol 2023; 25:171-176. [PMID: 36309943 PMCID: PMC10098604 DOI: 10.1111/1462-2920.16266] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 10/27/2022] [Indexed: 01/21/2023]
Affiliation(s)
- Gaofeng Ni
- Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Rachael Lappan
- Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Marcela Hernández
- School of Biological Sciences, University of East Anglia, Norwich, Norfolk, United Kingdom
| | - Talitha Santini
- School of Agriculture and Environment, University of Western Australia, Perth, Western Australia, Australia
| | - Andrew G Tomkins
- School of Earth, Atmosphere & Environment, Monash University, Clayton, Victoria, Australia
| | - Chris Greening
- Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia.,Securing Antarctica's Environmental Future, Monash University, Clayton, Victoria, Australia
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16
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Payá C, Minguillón S, Hernández M, Miguel SM, Campos L, Rodrigo I, Bellés JM, López-Gresa MP, Lisón P. SlS5H silencing reveals specific pathogen-triggered salicylic acid metabolism in tomato. BMC Plant Biol 2022; 22:549. [PMID: 36443652 PMCID: PMC9706870 DOI: 10.1186/s12870-022-03939-5] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Salicylic acid (SA) is a major plant hormone that mediates the defence pathway against pathogens. SA accumulates in highly variable amounts depending on the plant-pathogen system, and several enzyme activities participate in the restoration of its levels. Gentisic acid (GA) is the product of the 5-hydroxylation of SA, which is catalysed by S5H, an enzyme activity regarded as a major player in SA homeostasis. GA accumulates at high levels in tomato plants infected by Citrus Exocortis Viroid (CEVd), and to a lesser extend upon Pseudomonas syringae DC3000 pv. tomato (Pst) infection. RESULTS We have studied the induction of tomato SlS5H gene by different pathogens, and its expression correlates with the accumulation of GA. Transient over-expression of SlS5H in Nicotiana benthamiana confirmed that SA is processed by SlS5H in vivo. SlS5H-silenced tomato plants were generated, displaying a smaller size and early senescence, together with hypersusceptibility to the necrotrophic fungus Botrytis cinerea. In contrast, these transgenic lines exhibited an increased defence response and resistance to both CEVd and Pst infections. Alternative SA processing appears to occur for each specific pathogenic interaction to cope with SA levels. In SlS5H-silenced plants infected with CEVd, glycosylated SA was the most discriminant metabolite found. Instead, in Pst-infected transgenic plants, SA appeared to be rerouted to other phenolics such as feruloyldopamine, feruloylquinic acid, feruloylgalactarate and 2-hydroxyglutarate. CONCLUSION Using SlS5H-silenced plants as a tool to unbalance SA levels, we have studied the re-routing of SA upon CEVd and Pst infections and found that, despite the common origin and role for SA in plant pathogenesis, there appear to be different pathogen-specific, alternate homeostasis pathways.
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Affiliation(s)
- C. Payá
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - S. Minguillón
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - M. Hernández
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - S. M. Miguel
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - L. Campos
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - I. Rodrigo
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - J. M. Bellés
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - M. P. López-Gresa
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
| | - P. Lisón
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València (UPV), Ciudad Politécnica de la Innovación (CPI) 8 E, Ingeniero Fausto Elio s/n, 46011 Valencia, Spain
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Astorga J, Hernández M, Bravo D, Hoare A. Evaluation of PCR primers to identify Porphyromonas endodontalis in apical periodontitis clinical samples. Arch Microbiol 2022; 204:652. [PMID: 36173466 DOI: 10.1007/s00203-022-03260-7] [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: 07/09/2021] [Revised: 09/02/2022] [Accepted: 09/15/2022] [Indexed: 11/02/2022]
Abstract
We aimed to evaluate whether two commonly used PCR primers are effective to identify P. endodontalis and discriminate from other prevalent black-pigmented bacteria in apical periodontitis (AP). Endodontic canal samples from patients with asymptomatic AP (n = 20) were collected and cultured in anaerobiosis. Two primer sets to detect P. endodontalis were selected from the literature and first analyzed for their specificity in silico; and then tested on clinical isolates in vitro and finally, in apical exudates ex vivo. The identity of P. endodontalis was verified by PCR and Sanger sequencing with universal primers for bacterial V3-V6 regions 16S rDNA. Only one primer set showed specificity only for P. endodontalis clones in silico and also was specific for P. endodontalis in vitro and ex vivo.
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Affiliation(s)
- J Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Olivos 943, 8380492, Independencia, 8380000, Santiago, Chile
| | - M Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Olivos 943, 8380492, Independencia, 8380000, Santiago, Chile.,Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Olivos 943, 8380492, Independencia, 8380000, Santiago, Chile
| | - D Bravo
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Olivos 943, 8380492, Independencia, 8380000, Santiago, Chile
| | - A Hoare
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Olivos 943, 8380492, Independencia, 8380000, Santiago, Chile.
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Veloso P, Fernández A, Astorga J, González-Quintanilla D, Castro A, Escobar A, Hoare A, Hernández M. Lipopolysaccharide from Porphyromonas gingivalis, but Not from Porphyromonas endodontalis, Induces Macrophage M1 Profile. Int J Mol Sci 2022; 23:ijms231710011. [PMID: 36077408 PMCID: PMC9456100 DOI: 10.3390/ijms231710011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/29/2022] Open
Abstract
Apical Lesions of Endodontic Origin (ALEO) are initiated by polymicrobial endodontic canal infection. Porphyromonas gingivalis (Pg) and Porphyromonas endodontalis (Pe) lipopolysaccharides (LPS) can induce a pro-inflammatory macrophage response through their recognition by TLR2 and TLR4. However, polarization responses induced by Pg and/or Pe LPS in macrophages are not fully understood. We aimed to characterize the polarization profiles of macrophages differentiated from THP-1 cells following Pg and/or Pe LPS stimulation from reference strain and clinical isolates. A modified LPS purification protocol was implemented and the electrophoretic LPS profiles were characterized. THP-1 human monocytes differentiated to macrophages were stimulated with Pg and Pe LPS. Polarization profiles were characterized through cell surface markers and secreted cytokines levels after 24 h of stimulation. TLR2 and TLR4 cell surfaces and transcriptional levels were determined after 24 or 2 h of LPS stimulation, respectively. LPS from Pg induced a predominant M1 profile in macrophages evidenced by changes in the expression of the surface marker CD64 and pro-inflammatory cytokine profiles, TNF-α, IL-1β, IL-6, and IL-12. Pe LPS was unable to induce a significant response. TLR2 and TLR4 expressions were neither modified by Pg or Pe LPS. Pg LPS, but not Pe LPS, induced a macrophage M1 Profile.
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Affiliation(s)
- Pablo Veloso
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Alejandra Fernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
- Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - David González-Quintanilla
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
- School of Health Sciences, Dentistry, Universidad Viña del Mar, Viña del Mar 2580022, Chile
| | - Alfredo Castro
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Alejandro Escobar
- Cellular and Molecular Biology Laboratory, Institute of Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Anilei Hoare
- Oral Microbiology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
- Correspondence:
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Domínguez F, Bañuelos J, Berrocal J, Del Pozo JJ, Hernández M, Carrasco-Sanz A, Cerrillo J, Escobedo-Araque P, Rodríguez D. A frequency comb stabilized Ti:Sa laser as a self-reference for ion-trap experiments with a 40Ca + ion. Rev Sci Instrum 2022; 93:093304. [PMID: 36182512 DOI: 10.1063/5.0094452] [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] [Received: 04/03/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023]
Abstract
In this study, we report on the stabilization of a continuous-wave Ti:Sa laser to an optical frequency comb. The laser is emitting at 866 nm to address one of the transitions required for Doppler cooling of a single 40Ca+ ion in a linear Paul trap (2D3/2 ↔P1/22). The stabilized Ti:Sa laser is utilized to calibrate an ultra-accurate wavelength meter. We certify this self-reference laser source by comparing the results from monitoring the laser-cooled 40Ca+ ion in the linear Paul trap, with those obtained when a HeNe laser is used for calibration. The use of this self-reference is compatible with the simultaneous use of the comb for precision spectroscopy in the same ion-trap experiment.
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Affiliation(s)
- F Domínguez
- Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain
| | - J Bañuelos
- Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain
| | - J Berrocal
- Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain
| | - J J Del Pozo
- Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain
| | - M Hernández
- Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain
| | - A Carrasco-Sanz
- Departamento de Óptica, Universidad de Granada, 18071 Granada, Spain
| | - J Cerrillo
- Área de Física Aplicada, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
| | - P Escobedo-Araque
- Bendable Electronics and Sensing Technologies (BEST) Group, University of Glasgow, G12 8QQ Glasgow, United Kingdom
| | - D Rodríguez
- Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain
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20
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Fernández J, Jiménez C, Benadof D, Morales P, Astorga J, Cáceres F, Hernández M, Fernández A, Valenzuela F. MMP-9 Levels in the Gingival Crevicular Fluid of Chilean Rosacea Patients. Int J Mol Sci 2022; 23:ijms23179858. [PMID: 36077255 PMCID: PMC9455966 DOI: 10.3390/ijms23179858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/16/2022] [Accepted: 08/26/2022] [Indexed: 11/18/2022] Open
Abstract
Rosacea is a chronic inflammatory skin disease whose prevalence rates remain unknown in Chile. Laboratory benchmark testing for this disease is not useful, therefore, we aimed to evaluate the gingival crevicular fluid (GCF) levels of extracellular metalloproteinases (MMP)-2 and MMP-9 as novel rosacea biomarkers. We designed a cross-sectional study with a control group. Participants were systemically healthy adults (n = 20) and persons with rosacea (n = 18). We performed a periodontal evaluation and collected gingival crevicular fluid to measure MMP-2 and MMP-9 levels. Analysis showed mean and standard deviation of MMP-9 concentrations in the GCF for patients with rosacea was 764.52 ± 569.83 pg/mL; for healthy patients, it was 260.69 ± 170.43 pg/mL (p < 0.05). The diagnosis of rosacea was responsible for the levels of MMP-9 in the GCF (p < 0.05), as opposed to periodontitis, smoking, and age (p > 0.05). The Area under ROC for MMP-9 was 0.869 (95%, C.I: 0.719−0.956), with a sensitivity of 72.22% and specificity of 81.58% for the diagnosis of rosacea. We conclude that the quantification of MMP-9 in the GCF could be used as a biomarker of rosacea. Also, rosacea was responsible for increasing the levels of MMP-9 in the GCF independent of periodontal status.
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Affiliation(s)
- Javier Fernández
- Centro Internacional de Estudios Clínicos, Probity Medical Research, Santiago 8420383, Chile
| | - Constanza Jiménez
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile
| | - Dafna Benadof
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile
| | - Paulina Morales
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Felipe Cáceres
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
- Department of Oral Pathology and Medicine, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Alejandra Fernández
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile
- Correspondence: (A.F.); (F.V.); Tel.: +56-2-2661-5834 (A.F.); +56-2-2978-8173 (F.V.)
| | - Fernando Valenzuela
- Department of Dermatology, Faculty of Medicine, Universidad de Los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile
- Correspondence: (A.F.); (F.V.); Tel.: +56-2-2661-5834 (A.F.); +56-2-2978-8173 (F.V.)
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21
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Eiros J, Hernández M. La evolución en variantes del SARS-CoV-2 y su repercusión clínica y sanitaria. Rev Clin Esp 2022; 222:414-416. [PMID: 35079173 PMCID: PMC8776505 DOI: 10.1016/j.rce.2021.12.004] [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: 11/22/2022]
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22
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Puig García M, Rivadeneira MF, Peralta A, Chilet Rosell E, Benazizi I, Hernández M, Torres Castillo AL, Parker LA. Access to health services for the care of chronic diseases during the
COVID pandemic in Ecuador: A qualitative study with a Social Determinants of
Health approach. Das Gesundheitswesen 2022. [DOI: 10.1055/s-0042-1753832] [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: 12/12/2022]
Affiliation(s)
- M Puig García
- Miguel Hernández University, Department of Public Health, Sant
Joan d'Alacant, Spanien
| | - MF Rivadeneira
- Pontificia Universidad Católica del Ecuador, Institute of
Public Health, Quito, Ecuador
| | - A Peralta
- Pontificia Universidad Católica del Ecuador, Institute of
Public Health, Quito, Ecuador
| | - E Chilet Rosell
- Miguel Hernández University, Department of Public Health, Sant
Joan d'Alacant, Spanien
| | - I Benazizi
- Miguel Hernández University, Department of Public Health, Sant
Joan d'Alacant, Spanien
| | - M Hernández
- Pontificia Universidad Católica del Ecuador, Institute of
Public Health, Quito, Ecuador
| | - AL Torres Castillo
- Pontificia Universidad Católica del Ecuador, Institute of
Public Health, Quito, Ecuador
| | - LA Parker
- Miguel Hernández University, Department of Public Health, Sant
Joan d'Alacant, Spanien
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23
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Hernández M, Mayer MPA, Santi-Rocca J. Editorial: The Human Microbiota in Periodontitis. Front Cell Infect Microbiol 2022; 12:952205. [PMID: 35832387 PMCID: PMC9272019 DOI: 10.3389/fcimb.2022.952205] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 11/24/2022] Open
Affiliation(s)
- Marcela Hernández
- Laboratory of Periodontal Biology and Department of Oral Pathology and Medicine, Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Marcia Pinto Alves Mayer
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Julien Santi-Rocca
- Science and Healthcare for Oral Welfare, Toulouse, France
- *Correspondence: Julien Santi-Rocca,
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Quirós-González V, Bueno I, Goñi-Echeverría C, García-Barrio N, Del Oro M, Ortega-Torres C, Martín-Jurado C, Pavón-Muñoz AL, Hernández M, Ruiz-Burgos S, Ruiz-Morandy M, Pedrera M, Serrano P, Bernal JL. [What about the weekend effect? Impact of the day of admission on in-hospital mortality, length of stay and cost of hospitalization]. J Healthc Qual Res 2022; 37:366-373. [PMID: 35659444 DOI: 10.1016/j.jhqr.2022.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/04/2022] [Accepted: 04/18/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION There is no agreement on the existence of the weekend effect in healthcare or, if it exists, on its possible causes. The objective of the study was to evaluate the differences in healthcare outcomes between patients admitted on weekdays or weekends in a high-complexity hospital. METHODS Observational and retrospective study of patients admitted between 2016 and 2019 in a public hospital with more than 1300 beds. Hospitalization episodes were classified according to whether admission took place between Friday at 3:00 p.m. and the following Monday at 8:00 a.m. (weekend admission) or not (admission on weekdays). Mortality, length of stay and associated costs were compared, applying their respective risk-adjustment models. RESULTS Of the total 169,495 hospitalization episodes analyzed, 48,201 (28.44%) corresponded to the weekend, presenting an older age (54.9 years vs. 53.9; P<.001), a higher crude mortality rate (5.22% vs. 4.59%; P<0.001), and a longer average length of stay (7.42 days vs. 6.74; P<.001), than those admitted on weekdays. The median crude cost of stay was lower (€731.25 vs. €850.88; P<0.001). No significant differences were found when applying the adjustment models, with a risk-adjusted mortality ratio of 1.03 (0.99-1.08) vs. 0.98 (0.95-1.01), risk-adjusted length of stay of 1.002 (0.98-1.005) vs. 0.999 (0.997-1.002) and risk-adjusted cost of stay of 0.928 (0.865-0.994) vs. 0.901 (0.843-0.962). CONCLUSION The results of the study reveal that the assistance provided during the weekends does not imply worse health outcomes or increased costs. Comparing the impact between hospitals will require a future homogenization of temporal criteria and risk adjustment models.
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Affiliation(s)
- V Quirós-González
- Oficina Estrategia 2020-2024 «Transforma 12», Hospital Universitario 12 de Octubre, Madrid, España.
| | - I Bueno
- Facultada de Ciencias Jurídicas y Sociales, Universidad Carlos III de Madrid, Madrid, España
| | - C Goñi-Echeverría
- Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, España; Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
| | - N García-Barrio
- Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
| | - M Del Oro
- Servicio de Gestión Económica y Contabilidad, Hospital Universitario 12 de Octubre, Madrid, España
| | - C Ortega-Torres
- Servicio de Gestión Económica y Contabilidad, Hospital Universitario 12 de Octubre, Madrid, España
| | - C Martín-Jurado
- Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
| | - A L Pavón-Muñoz
- Oficina Estrategia 2020-2024 «Transforma 12», Hospital Universitario 12 de Octubre, Madrid, España
| | - M Hernández
- Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
| | - S Ruiz-Burgos
- Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
| | - M Ruiz-Morandy
- Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
| | - M Pedrera
- Servicio de Informática, Hospital Universitario 12 de Octubre, Madrid, España
| | - P Serrano
- Dirección de Planificación, Hospital Universitario 12 de Octubre, Madrid, España
| | - J L Bernal
- Servicio de Análisis de Información y Control de Gestión, Hospital Universitario 12 de Octubre, Madrid, España
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25
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Nguyen DP, McQuistan MR, Qian F, Hernández M, Macek MD, Chi DL. The interactive effects of oral health literacy and acculturation on dental care use among Hispanic adults. J Public Health Dent 2022; 82:295-302. [PMID: 35644999 PMCID: PMC9546387 DOI: 10.1111/jphd.12529] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 04/19/2022] [Accepted: 05/06/2022] [Indexed: 11/30/2022]
Abstract
Objective Assess whether there is an interactive effect between oral health literacy and acculturation on dental care use for Hispanic adults. Methods Self‐identifying Hispanic adults participated in this observational study (N = 338). Oral health literacy (low vs. high) was measured using the Comprehensive Measure of Oral Health Knowledge (CMOHK). Acculturation (low vs. high) was measured using the Short Acculturation Scale for Hispanics (SASH) and operationalized a second way by the language in which the survey was completed (English or Spanish). The outcome was dental care use in the past year (yes/no). Confounder‐adjusted modified Poisson regression models were run to generate risk ratios (RR) and to test the hypothesis that participants with high oral health literacy and high acculturation would be more likely to have used dental care in the past year than participants with low oral health literacy and low acculturation. Results About 65% of participants used dental care in the past year. The final models failed to show that participants with high oral health literacy and high acculturation were more likely to have used dental care than other participants. However, in the language proxy interaction model, participants with high oral health literacy and low acculturation were significantly more likely to have used dental care than participants with low oral health literacy and low acculturation. Conclusion There may be an interaction between oral health literacy and acculturation when modeling dental care use for Hispanic adults that should be further explored.
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Affiliation(s)
- Daisy Patiño Nguyen
- Department of Oral Health Sciences University of Washington School of Dentistry Seattle Washington USA
| | - Michelle R. McQuistan
- Department of Preventive and Community Dentistry The University of Iowa College of Dentistry Iowa City Iowa USA
| | - Fang Qian
- Iowa Oral Health Institute The University of Iowa College of Dentistry Iowa City Iowa USA
| | - Marcela Hernández
- Department of Family Dentistry The University of Iowa College of Dentistry Iowa City Iowa USA
| | - Mark D. Macek
- Department of Dental Public Health University of Maryland School of Dentistry Baltimore Maryland USA
| | - Donald L. Chi
- Department of Oral Health Sciences University of Washington School of Dentistry Seattle Washington USA
- Department of Health Systems and Population Health University of Washington School of Public Health Seattle Washington USA
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26
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Bordagaray MJ, Fernández A, Astorga J, Garrido M, Hernández P, Chaparro A, Lira MJ, Gebicke-Haerter P, Hernández M. CpG Single-Site Methylation Regulates TLR2 Expression in Proinflammatory PBMCs From Apical Periodontitis Individuals. Front Immunol 2022; 13:861665. [PMID: 35300329 PMCID: PMC8921253 DOI: 10.3389/fimmu.2022.861665] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 01/24/2022] [Accepted: 02/09/2022] [Indexed: 12/19/2022] Open
Abstract
Introduction Apical periodontitis (AP) is a common oral disease caused by the inflammatory destruction of the periapical tissues due to the infection of the root canal system of the tooth. It also contributes to systemic bacterial translocation, where peripheric mononuclear blood cells (PBMCs) can act as carriers. Toll-like receptor (TLR) 2 mediates the response to infection and activates inflammatory responses. DNA methylation can be induced by bacteria and contributes to the modulation of this response. Despite the evidence that supports the participation of PBMCs in immune-inflammatory disorders, the inflammatory profile and epigenetic regulatory mechanisms of PBMCs in AP individuals are unknown. Aim To determine TLR2 gene methylation and inflammatory profiles of PBMCs in AP. Methods Cross-sectional exploratory study. Otherwise, healthy individuals with AP (n=27) and controls (n=30) were included. PMBCs were isolated by a Ficoll gradient, cultured for 24 hours, and both RNA and DNA were extracted. DNA was bisulfite-treated, and specific sites at the promoter region of the TLR2 gene were amplified by qPCR using validated primers. To verify its amplification, agarose gels were performed. Then, the PCR product was sequenced. mRNA expression of TLR2 was determined by qPCR. The soluble levels of 105 inflammatory mediators were first explored with Proteome Profiler Human Cytokine Array Kit. Consequently, tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-10, IL-6Rα, IL-1β, and IL-12p70 levels were measured by Multiplex assay. Results PBMCs from individuals with AP demonstrated a proinflammatory profile showing higher soluble levels of TNF-α, IL-6, and IL-1β compared to controls (p<0.05). Higher TLR2 expression and higher global methylation pattern of the promoter region of the gene were found in AP compared to controls (p<0.05). The CpGs single-sites at positions -166 and -146 were completely methylated, while the site -102 was totally unmethylated, independently of the presence of AP. DNA methylation of CpG single-sites in positions -77 and +24 was positively associated with TLR2 expression. Conclusions PBMCs from AP subjects show a hyperinflammatory phenotype and TLR2 upregulation in association with single CpG-sites’ methylation from the TLR2 gene promoter, thereby contributing to a sustained systemic inflammatory load in individuals with periapical endodontic diseases.
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Affiliation(s)
- María José Bordagaray
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alejandra Fernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Mauricio Garrido
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Patricia Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alejandra Chaparro
- Department of Periodontology, Faculty of Dentistry, Centro de Investigación e Innovación Biomédica (CIIB), Universidad de Los Andes, Santiago, Chile
| | - María Jesús Lira
- Department of Orthopedic Surgery, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Peter Gebicke-Haerter
- Institute of Psychopharmacology, Central Institute of Mental Health, Faculty of Medicine, University of Heidelberg, Mannheim, Germany
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
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27
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Fernández A, Astorga J, Bordagaray MJ, Lira MJ, Gebicke-Haerter PJ, Hernández M. Effect of TLR9 methylation on its transcription in apical inflammation. Int Endod J 2022; 55:784-794. [PMID: 35416307 DOI: 10.1111/iej.13745] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/25/2022]
Abstract
AIM to explore the methylation pattern, its role on transcriptional regulation and potential modifiers of methylation of theTLR9 gene in chronic periapical inflammation. METHODOLOGY In this cross-sectional study, apical lesions of endodontic origin (ALEO, n=61) and healthy periodontal ligaments (HPL, n=15) were included. Products from bisulfited and PCR-amplified DNA were analyzed for their methylation profiles in the promoter region and at each CpG island. Additionally, TLR9 mRNA levels were quantified by qPCR and bivariate and multiple modelling were performed to better understand the influence of methylations on gene transcription. RESULTS TLR9 mRNA levels were upregulated in ALEO compared to HPL (p<0.001). TLR9 promoter CpG sites and CpG +2086 in the intragenic island 1 were demethylated in ALEO compared to HPL (p<0.05). Multivariate analysis, adjusted by smoking and gender, revealed that demethylation of TLR9 promoter sites enhanced transcriptional activity, specifically demethylated CpGs at positions -736 and -683, (p=0.02), which are close to CRE binding. Whereas ALEO reduced the global methylation of the gene-promoter and intragenic-island 2 (p<0.05) by -42.5 and -9.5 percentage points, respectively, age reduced the global methylation of intragenic-island 3 within the exon 2. CONCLUSIONS Demethylations of TLR9 promoter CpG sites, along with the intragenic DNA methylation status, were involved in higher transcription in ALEO. Hence, chronic periapical inflammation and aging modify the methylation status both in the gene promoter and in intragenic CpG islands.
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Affiliation(s)
- Alejandra Fernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - María José Bordagaray
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - María Jesús Lira
- Department of Orthopaedic Surgery, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Peter J Gebicke-Haerter
- Institute of Psychopharmacology, Central Institute of Mental Health, Faculty of Medicine, University of Heidelberg, Mannheim, Germany
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
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Garcia-Moran E, Hernández M, Abad D, Eiros JM. Putative Secondary Structure at 5’UTR as a Potential Antiviral Target against SARS-CoV-2. Rev Esp Quimioter 2022; 35:204-212. [PMID: 34905913 PMCID: PMC8972695 DOI: 10.37201/req/153.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
SARS-CoV-2 is an enveloped positive-sense single-stranded RNA coronavirus that causes COVID-19, of which the current outbreak has resulted in a high number of cases and fatalities throughout the world, even vaccine doses are being administered. The aim of this work was to scan the SARS-CoV-2 genome in search for therapeutic targets. We found a sequence in the 5’UTR (NC\_045512:74-130), consisting of a typical heptamer next to a structured region that may cause ribosomal frameshifting. The potential biological value of this region is relevant through its low similarity with other viruses, including coronaviruses related to SARS-CoV, and its high sequence conservation within multiple SARSCoV-2 isolates. We have predicted the secondary structure of the region by means of different bioinformatic tools. We have suggested a most probable secondary structure to proceed with a 3D reconstruction of the structured segment. Finally, we carried out virtual docking on the 3D structure to look for a binding site and then for drug ligands from a database of lead compounds. Several molecules that could be probably administered as oral drugs show promising binding affinity within the structured region, and so it could be possible interfere its potential regulatory role.
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Affiliation(s)
- E Garcia-Moran
- Emilio Garcia-Moran, Centro Nacional de la Gripe. Microbiology Department, Faculty of Medicine, 47005 Valladolid, Spain.
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29
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Eiros JM, Hernández M. The evolution of SARS-CoV-2 variants and their clinical and healthcare implications. Rev Clin Esp 2022; 222:414-416. [PMID: 35550879 PMCID: PMC8926911 DOI: 10.1016/j.rceng.2021.12.004] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 12/30/2021] [Indexed: 11/28/2022]
Affiliation(s)
- J M Eiros
- Servicio de Microbiología, Área de Microbiología, Hospital Universitario Río Hortega, Facultad de Medicina, Universidad de Valladolid, Valladolid, Spain.
| | - M Hernández
- Laboratorio de Biología Molecular y Microbiología, Instituto Tecnológico Agrario de Castilla y León, Valladolid, Spain
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30
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Hernández M, Nóvoa-Medina Y, Faner R, Palou E, Esquerda A, Castelblanco E, Wägner AM, Mauricio D. Genetics: Is LADA just late onset type 1 diabetes? Front Endocrinol (Lausanne) 2022; 13:916698. [PMID: 36034444 PMCID: PMC9404871 DOI: 10.3389/fendo.2022.916698] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND There is a controversy regarding Latent Autoimmune Diabetes in Adults (LADA) classification and whether it should be considered a slowly progressing form of type 1 (T1) diabetes (DM) or a distinct type of DM altogether. METHODS This cross-sectional study assessed major genes associated with T1DM (class II HLA, PTPN22 [rs2476601] and INS [rs689]) in patients with LADA, as compared with participants with T1DM (stratified according to age of diagnosis before or after 30) and T2DM. HLA genotyping of the DRB1, DQA1 and DQB1 loci was performed by reverse PCR sequence-specific oligonucleotides. HLA haplotypes were assigned according to those most frequently described in the European population. INS and PTPN22 SNPs were genotyped by real-time PCR. RESULTS A total of 578 participants were included: 248 with T1DM (70 diagnosed after the age of 30), 256 with T2DM and 74 with LADA. High risk HLA alleles were significantly more frequent in LADA than in T2DM, whereas the opposite was true for protective alleles. We found a lower frequency of the high-risk DRB1*04-DQB1*03:02-DQA1*03:01 haplotype in LADA (21.1%) than in the overall T1DM (34.7%) (p<0.05), whereas no differences were found between these groups for DRB1*03-DQB1*02:01-DQA1*05:01 or for protective alleles. Only 12% the overall T1DM group had no risk alleles vs 30% of LADA (p<0.0005). However, HLA allele distribution was similar in LADA and T1DM diagnosed after the age of 30. A total of 506 individuals (195 with T1DM [21 diagnosed after age 30] 253 with T2DM and 58 with LADA) were genotyped for the PTPN22 and INS SNPs. The G/A genotype of the PTPN22 rs2476601 was more frequent and the T/T genotype of the INS SNP rs689 was less frequent in T1DM compared to LADA. We did not find any significant differences in the frequency of the mentioned SNPs between LADA and T2DM, or between LADA and T1DM diagnosed after the age of 30. CONCLUSION In this relatively small cross-sectional study, the genetic profile of subjects with LADA showed a similar T1DM-related risk allele distribution as in participants with T1DM diagnosed after the age of 30, but fewer risk alleles than those diagnosed before 30. Differences were present for HLA, as well as PTPN22 and INS genes.
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Affiliation(s)
- M. Hernández
- Department of Endocrinology and Nutrition, University Hospital Arnau de Vilanova, Lleida, Spain
- Lleida Biomedical Research Institute (IRB Lleida), University of Lleida (UdL), Lleida, Spain
| | - Y. Nóvoa-Medina
- Department of Pediatrics, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas de Gran Canaria, Spain
- Research Institute in Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria, Spain
| | - R. Faner
- Histocompatibility and Immunogenetics Laboratory, Blood and Tissue Bank, Barcelona, Spain
| | - E. Palou
- Histocompatibility and Immunogenetics Laboratory, Blood and Tissue Bank, Barcelona, Spain
| | - A. Esquerda
- Department of Laboratory Medicine, University Hospital Arnau de Vilanova, Lleida, Spain
| | - E. Castelblanco
- Diabetis en Atenció Primària - Catalunya (DAP-Cat) Group, Unitat de Suport a la Recerca Barcelona, Fundació Institut Universitari per a la recerca a l’Atenció Primària de Salut Jordi Gol i Gurina, Barcelona, Spain
- Division of Endocrinology, Metabolism and Lipid Research, Washington University School of Medicine in St. Louis, St. Louis, MO, United States
| | - A. M. Wägner
- Research Institute in Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria, Spain
- Department of Endocrinology and Nutrition, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas de Gran Canaria, Spain
- *Correspondence: A. M. Wägner, ; D. Mauricio,
| | - D. Mauricio
- Department of Endocrinology, Hospital de la Santa Creu i Sant Pau & Institut d’Investigació Biomèdica (IIB) Sant Pau, Barcelona, Spain
- Consorcio Centro de Investigación Biomédica en Red (CIBER) of Diabetes and Associated Metabolic Diseases, Instituto de Salud Carlos III, Barcelona, Spain
- Faculty of Medicine, University of Vic & Central University of Catalonia, Vic, Spain
- *Correspondence: A. M. Wägner, ; D. Mauricio,
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Ruano R, Zorzano-Martinez M, Campos A, Rius F, Hernández M. Subacute thyroiditis might be a complication triggered by SARS-CoV-2. ENDOCRINOL DIAB NUTR 2021; 68:755-756. [PMID: 34924166 PMCID: PMC8674977 DOI: 10.1016/j.endien.2021.11.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 09/04/2020] [Indexed: 06/14/2023]
Affiliation(s)
- R Ruano
- Endocrinology and Nutrition Department, University Hospital Arnau de Vilanova, Lleida, Spain
| | - M Zorzano-Martinez
- Endocrinology and Nutrition Department, University Hospital Arnau de Vilanova, Lleida, Spain
| | - A Campos
- Endocrinology and Nutrition Department, University Hospital Arnau de Vilanova, Lleida, Spain
| | - F Rius
- Endocrinology and Nutrition Department, University Hospital Arnau de Vilanova, Lleida, Spain; Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain; Medicine Department, University of Lleida (UdL), Lleida, Spain
| | - M Hernández
- Endocrinology and Nutrition Department, University Hospital Arnau de Vilanova, Lleida, Spain; Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain; Medicine Department, University of Lleida (UdL), Lleida, Spain.
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Bendek MJ, Canedo-Marroquín G, Realini O, Retamal IN, Hernández M, Hoare A, Busso D, Monteiro LJ, Illanes SE, Chaparro A. Periodontitis and Gestational Diabetes Mellitus: A Potential Inflammatory Vicious Cycle. Int J Mol Sci 2021; 22:ijms222111831. [PMID: 34769262 PMCID: PMC8584134 DOI: 10.3390/ijms222111831] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022] Open
Abstract
Periodontitis is a chronic inflammatory immune disease associated with a dysbiotic state, influenced by keystone bacterial species responsible for disrupting the periodontal tissue homeostasis. Furthermore, the severity of periodontitis is determined by the interaction between the immune cell response in front of periodontitis-associated species, which leads to the destruction of supporting periodontal tissues and tooth loss in a susceptible host. The persistent bacterial challenge induces modifications in the permeability and ulceration of the sulcular epithelium, which facilitates the systemic translocation of periodontitis-associated bacteria into distant tissues and organs. This stimulates the secretion of pro-inflammatory molecules and a chronic activation of immune cells, contributing to a systemic pro-inflammatory status that has been linked with a higher risk of several systemic diseases, such as type 2 diabetes mellitus (T2DM) and gestational diabetes mellitus (GDM). Although periodontitis and GDM share the common feature of systemic inflammation, the molecular mechanistic link of this association has not been completely clarified. This review aims to examine the potential biological mechanisms involved in the association between periodontitis and GDM, highlighting the contribution of both diseases to systemic inflammation and the role of new molecular participants, such as extracellular vesicles and non-coding RNAs, which could act as novel molecular intercellular linkers between periodontal and placental tissues.
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Affiliation(s)
- María José Bendek
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Gisela Canedo-Marroquín
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Ornella Realini
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Ignacio N. Retamal
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
| | - Marcela Hernández
- Laboratory of Periodontal Biology and Department of Pathology and Oral Medicine, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago 8380544, Chile;
| | - Anilei Hoare
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Olivos 943, Independencia, Santiago 8380544, Chile;
| | - Dolores Busso
- Program in Biology of Reproduction, Centre for Biomedical Research and Innovation (CIIB), Universidad de los Andes, Santiago 8380544, Chile; (D.B.); (L.J.M.); (S.E.I.)
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago 8380544, Chile
| | - Lara J. Monteiro
- Program in Biology of Reproduction, Centre for Biomedical Research and Innovation (CIIB), Universidad de los Andes, Santiago 8380544, Chile; (D.B.); (L.J.M.); (S.E.I.)
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago 8380544, Chile
| | - Sebastián E. Illanes
- Program in Biology of Reproduction, Centre for Biomedical Research and Innovation (CIIB), Universidad de los Andes, Santiago 8380544, Chile; (D.B.); (L.J.M.); (S.E.I.)
- IMPACT, Center of Interventional Medicine for Precision and Advanced Cellular Therapy, Santiago 8380544, Chile
| | - Alejandra Chaparro
- Department of Periodontology, Centre for Biomedical Research, Faculty of Dentistry, Universidad de los Andes, Av. Plaza 2501, Las Condes, Santiago 7620157, Chile; (M.J.B.); (G.C.-M.); (O.R.); (I.N.R.)
- Correspondence: ; Tel.: +56-998376593
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Valenzuela F, Fernández J, Jiménez C, Cavagnola D, Mancilla JF, Astorga J, Hernández M, Fernández A. Identification of IL-18 and Soluble Cell Adhesion Molecules in the Gingival Crevicular Fluid as Novel Biomarkers of Psoriasis. Life (Basel) 2021; 11:life11101000. [PMID: 34685372 PMCID: PMC8538479 DOI: 10.3390/life11101000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 12/21/2022] Open
Abstract
Psoriasis is a chronic immunoinflammatory skin disease. Although its diagnosis is clinical, differences in the appearance and severity of lesions pose a challenge for clinicians worldwide. The use of accessible biomarkers for psoriasis could aid in the early diagnosis and treatment of the disease. To date, evidence on the analysis of gingival crevicular fluid (GCF) molecules as novel, accessible, and reliable biomarkers for psoriasis is limited. This cross-sectional study compared the GCF levels of IL-18, soluble (s)ICAM-1, and sE-selectin in psoriatic patients (n = 42) and healthy controls (n = 39). Individuals with psoriasis not undergoing treatment and healthy individuals were included independent of periodontal status. GCF samples were collected, and a multiplex bead immunoassay was performed to quantify the levels of the target molecules. Psoriatic patients presented higher concentrations of IL-18 and lower concentrations of sE-selectin compared to controls (p < 0.05). No differences were found in the levels of sICAM-1 between the two groups (p > 0.05). Psoriasis was associated with IL-18 and E-selectin levels regardless of periodontal status, age, and smoking habit (p < 0.05). The areas under the receiver operating characteristic curve (ROC) for IL-18 and sE-selectin were 0.77 and 0.68, respectively. In conclusion, IL-18 and sE-selectin levels in the GCF could be promising biomarker for psoriasis.
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Affiliation(s)
- Fernando Valenzuela
- Department of Dermatology, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
- Centro Internacional de Estudios Clínicos, Probity Medical Research, Santiago 8420383, Chile;
- Correspondence: (F.V.); (A.F.); Tel.: +56-2-29788173 (F.V.); +56-2-2661-5834 (A.F.)
| | - Javier Fernández
- Centro Internacional de Estudios Clínicos, Probity Medical Research, Santiago 8420383, Chile;
- Dermatology Unit, San José Hospital, Santiago 8380419, Chile
| | - Constanza Jiménez
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile; (C.J.); (D.C.); (J.F.M.)
| | - Daniela Cavagnola
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile; (C.J.); (D.C.); (J.F.M.)
| | - Juan Felipe Mancilla
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile; (C.J.); (D.C.); (J.F.M.)
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile; (J.A.); (M.H.)
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile; (J.A.); (M.H.)
- Department of Oral Pathology and Medicine, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile
| | - Alejandra Fernández
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andres Bello, Santiago 8370133, Chile; (C.J.); (D.C.); (J.F.M.)
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago 8380544, Chile; (J.A.); (M.H.)
- Correspondence: (F.V.); (A.F.); Tel.: +56-2-29788173 (F.V.); +56-2-2661-5834 (A.F.)
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Hernández M, Baeza M, Räisänen IT, Contreras J, Tervahartiala T, Chaparro A, Sorsa T, Hernández-Ríos P. Active MMP-8 Quantitative Test as an Adjunctive Tool for Early Diagnosis of Periodontitis. Diagnostics (Basel) 2021; 11:diagnostics11081503. [PMID: 34441437 PMCID: PMC8394100 DOI: 10.3390/diagnostics11081503] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 07/26/2021] [Revised: 08/14/2021] [Accepted: 08/17/2021] [Indexed: 12/16/2022] Open
Abstract
Periodontitis is a host-mediated bacterial disease that affects the tooth attachment apparatus. Metalloproteinase-8 (MMP-8), a validated biomarker, could aid in clinical diagnosis. This study aimed to evaluate the diagnostic performance of active (a) MMP-8 immunotest versus total (t) MMP-8 ELISA for quantitative real-time diagnosis and assessment of periodontitis severity at the site level. Gingival crevicular fluid (GCF) was sampled from 30 healthy, 42 mild, and 59 severe periodontitis sites from thirty-one volunteers. MMP-8 concentrations were determined by time-resolved immunofluorometric assay (IFMA) and enzyme-linked immunosorbent assay (ELISA). Statistical analysis was performed using the STATA package. Both active and total MMP-8-based methods discriminated among sites according to periodontal diagnosis and severity, with a positive correlation between the two tests (p < 0.001). (a) MMP-8 models showed the best performance in receiver operating characteristic (ROC) curves to discriminate between healthy and periodontitis sites (area under the curve [AUC] = 0.89), while (t) MMP-8 demonstrated a high diagnostic precision in the detection of mild from severe periodontitis sites (AUC ≥ 0.80). The use of (a) MMP-8 and (t) MMP-8 could represent a useful adjunctive tool for periodontitis diagnosis and severity. These results support the applicability of new point-of-care methods in the monitoring of high-risk periodontal patients.
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Affiliation(s)
- Marcela Hernández
- Laboratory of Periodontal Biology, Department of Oral Pathology and Medicine, Faculty of Dentistry, University of Chile, Santiago 8380544, Chile;
| | - Mauricio Baeza
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago 8380544, Chile; (M.B.); (J.C.)
- School of Public Health, Faculty of Medicine, University of Chile, Santiago 7510040, Chile
| | - Ismo T. Räisänen
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (I.T.R.); (T.T.); (T.S.)
| | - Johanna Contreras
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago 8380544, Chile; (M.B.); (J.C.)
| | - Taina Tervahartiala
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (I.T.R.); (T.T.); (T.S.)
| | - Alejandra Chaparro
- Department of Periodontology, Centro de Investigación e Innovación Biomédica (CIIB), Faculty of Dentistry, Universidad de Los Andes, Santiago 7620001, Chile;
| | - Timo Sorsa
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland; (I.T.R.); (T.T.); (T.S.)
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, 14152 Huddinge, Sweden
| | - Patricia Hernández-Ríos
- Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, Santiago 8380544, Chile; (M.B.); (J.C.)
- Correspondence: ; Tel.: +56-2-2978-1839
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Jiménez C, Garrido M, Pussinen P, Bordagaray MJ, Fernández A, Vega C, Chaparro A, Hoare A, Hernández M. Systemic burden and cardiovascular risk to Porphyromonas species in apical periodontitis. Clin Oral Investig 2021; 26:993-1001. [PMID: 34313848 DOI: 10.1007/s00784-021-04083-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 04/23/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Porphyromonas (P.) species (spp.) are a major etiological agent of apical periodontitis (AP), which in turn represents a risk factor for cardiovascular diseases. This study explored the associations between endodontic infection with Porphyromonas species, the systemic bacterial burden, and cardiovascular risk, based on high-sensitivity C-reactive protein (hsCRP), in young adults with AP. MATERIALS AND METHODS Cross-sectional study. Otherwise, healthy individuals with AP and controls (n = 80, ≤ 40 years) were recruited at the University Dental Clinic. Oral parameters and classic cardiovascular risk factors were registered. Endodontic Porphyromonas endodontalis and Porphyromonas gingivalis were identified using conventional PCR. Serum concentrations of anti-P. endodontalis and anti-P. gingivalis antibodies, and endotoxins were determined through ELISA and Limulus-amebocyte assays. Serum hsCRP was determined for cardiovascular risk stratification. RESULTS Intracanal detection of P. endodontalis and P. gingivalis in AP were 33.3% and 22.9%, respectively. Serum anti-P. endodontalis and anti-P. gingivalis IgG was higher in AP than controls (p < 0.05 and p = 0.057, respectively). Intracanal P. endodontalis associated with higher endotoxemia (p < 0.05). Among endodontic factors, the presence (OR 4.2-5.5, p < 0.05) and the number of apical lesions (OR 2.3, p < 0.05) associated with moderate-severe cardiovascular risk, whereas anti-P. endodontalis IgG were protective (OR 0.3, p > 0.05). CONCLUSIONS AP and infection with P. endodontalis positively associated with cardiovascular risk based on hsCRP levels and endotoxemia, respectively, whereas anti-P. endodontalis IgG response seems to be protective against low-grade systemic inflammation. CLINICAL RELEVANCE Apical periodontitis and endodontic P. endodontalis can influence the systemic burden with impact on the surrogate cardiovascular risk marker hsCRP, providing mechanistic links.
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Affiliation(s)
- Constanza Jiménez
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andrés Bello, Santiago, Chile.,Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Mauricio Garrido
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Pirkko Pussinen
- Department of Oral and Maxillofacial Diseases, Helsinki University and Helsinki University Central Hospital, Helsinki, Finland
| | - María José Bordagaray
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alejandra Fernández
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andrés Bello, Santiago, Chile.,Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Claudia Vega
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alejandra Chaparro
- Department of Periodontology, Centro de Investigación E Innovación Biomédica (CIIB), Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
| | - Anilei Hoare
- Laboratory of Oral Microbiology, Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Olivos 943, Box 8380492, Independencia , Santiago, Chile.
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile. .,Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Olivos 943, Box 8380492, Independencia , Santiago, Chile.
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Hidalgo C, Stoore C, Baquedano MS, Pereira I, Franco C, Hernández M, Paredes R. Response patterns in adventitial layer of Echinococcus granulosus sensu stricto cysts from naturally infected cattle and sheep. Vet Res 2021; 52:66. [PMID: 33962666 PMCID: PMC8105927 DOI: 10.1186/s13567-021-00936-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/22/2021] [Indexed: 12/26/2022] Open
Abstract
Cystic echinococcosis is a zoonotic disease caused by the metacestode of Echinococcus granulosus sensu lato. The disease is characterized by the development of cystic structures inside viscera of the intermediate host, mainly liver and lungs. These cysts are formed by three layers: germinal, laminated, and adventitial layer, the latter being the local host immune response. Metacestodes that develop protoscoleces, the infective stage to the definitive host, are termed fertile, whereas cysts that do not produce protoscoleces are termed non-fertile. Sheep usually harbor fertile cysts while cattle usually harbor non-fertile cysts. Adventitial layers with fibrotic resolution are associated to fertile cysts, whereas a granulomatous reaction is associated with non-fertile cysts. The aim of this study was to analyze cellular distribution in the adventitial layer of fertile and non-fertile E. granulosus sensu stricto cysts found in liver and lungs of cattle and sheep. A total of 418 cysts were analyzed, 203 from cattle (8 fertile and 195 non-fertile) and 215 from sheep (64 fertile and 151 non-fertile). Fertile cysts from cattle showed mixed patterns of response, with fibrotic resolution and presence of granulomatous response in direct contact with the laminated layer, while sheep fertile cysts always displayed fibrotic resolution next to the laminated layer. Cattle non-fertile cysts display a granulomatous reaction in direct contact with the laminated layer, whereas sheep non-fertile cysts display a granulomatous reaction, but in direct contact with the fibrotic resolution. This shows that cattle and sheep cystic echinococcosis cysts have distinct local immune response patterns, which are associated to metacestode fertility.
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Affiliation(s)
- Christian Hidalgo
- Instituto de Ciencias Agroalimentarias, Animales y Ambientales (ICA3), Universidad de O'Higgins, San Fernando, Chile.
| | - Caroll Stoore
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - María Soledad Baquedano
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Ismael Pereira
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Carmen Franco
- Staff Pathologist, Clinica Santa Maria, Santiago, Chile
| | - Marcela Hernández
- Laboratorio de Biología Periodontal y Departamento de Patología y Medicina Oral, Facultad de Odontología, Universidad de Chile, Santiago, Chile
| | - Rodolfo Paredes
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile.
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Chaparro A, Monckeberg M, Realini O, Hernández M, Param F, Albers D, Ramírez V, Kusanovic JP, Romero R, Rice G, Illanes SE. Gingival Crevicular Placental Alkaline Phosphatase Is an Early Pregnancy Biomarker for Pre-Eclampsia. Diagnostics (Basel) 2021; 11:diagnostics11040661. [PMID: 33916883 PMCID: PMC8067553 DOI: 10.3390/diagnostics11040661] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/15/2021] [Accepted: 03/22/2021] [Indexed: 12/20/2022] Open
Abstract
Early and innovative diagnostic strategies are required to predict the risk of developing pre-eclampsia (PE). The purpose of this study was to evaluate the performance of gingival crevicular fluid (GCF) placental alkaline phosphatase (PLAP) concentrations to correctly classify women at risk of PE. A prospectively collected, retrospectively stratified cohort study was conducted, with 412 pregnant women recruited at 11–14 weeks of gestation. Physical, obstetrical, and periodontal data were recorded. GCF and blood samples were collected for PLAP determination by ELISA assay. A multiple logistic regression classification model was developed, and the classification efficiency of the model was established. Within the study cohort, 4.3% of pregnancies developed PE. GCF-PLAP concentration was 3- to 6-fold higher than in plasma samples. GCF-PLAP concentrations and systolic blood pressure were greater in women who developed PE (p = 0.015 and p < 0.001, respectively). The performance of the multiparametric model that combines GCF-PLAP concentration and the levels of systolic blood pressure (at 11–14 weeks gestation) showed an association of systolic blood pressure and GCF-PLAP concentrations with the likelihood of developing PE (OR:1.07; 95% CI 1.01–1.11; p = 0.004 and OR:1.008, 95% CI 1.000–1.015; p = 0.034, respectively). The model had a sensitivity of 83%, a specificity of 72%, and positive and negative predictive values of 12% and 99%, respectively. The area under the receiver operating characteristic (AUC-ROC) curve was 0.77 and correctly classified 72% of PE pregnancies. In conclusion, the multivariate classification model developed may be of utility as an aid in identifying pre-symptomatic women who subsequently develop PE.
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Affiliation(s)
- Alejandra Chaparro
- Centre for Biomedical and Innovation Research, Department of Periodontology, Faculty of Dentistry, Universidad de Los Andes, Santiago 7620001, Chile; (O.R.); (F.P.)
- Correspondence: ; Tel.: +56-9983-76593
| | - Maximiliano Monckeberg
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universidad de Los Andes, Santiago 7620001, Chile; (M.M.); (S.E.I.)
| | - Ornella Realini
- Centre for Biomedical and Innovation Research, Department of Periodontology, Faculty of Dentistry, Universidad de Los Andes, Santiago 7620001, Chile; (O.R.); (F.P.)
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Department of Pathology, Faculty of Dentistry, Universidad de Chile, Santiago 8330015, Chile;
| | - Fernanda Param
- Centre for Biomedical and Innovation Research, Department of Periodontology, Faculty of Dentistry, Universidad de Los Andes, Santiago 7620001, Chile; (O.R.); (F.P.)
| | - Daniela Albers
- Department of Statistics, Faculty of Dentistry, Universidad Mayor, Santiago 8580745, Chile;
| | - Valeria Ramírez
- Department of Public Health and Epidemiology, Faculty of Dentistry, Universidad de los Andes, Santiago 7620001, Chile;
| | - Juan Pedro Kusanovic
- Department of Obstetrics and Gynecology, Hospital Sótero del Río, Santiago 13201, Chile;
- Division of Obstetrics and Gynecology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Roberto Romero
- Perinatology Research Branch, NICHD/NIH/DHHS, Detroit, MI 48201, USA;
- Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA
- Detroit Medical Center, Detroit, MI 48201, USA
- Department of Obstetrics and Gynecology, Florida International University, Miami, FL 33199, USA
| | - Gregory Rice
- Center for Research and Medical Innovation, Department of Obstetrics and Gynecology, Faculty of Medicine, Universidad de Los Andes, Santiago 7620001, Chile;
- UQ Centre for Clinical Research, University of Queensland, Brisbane, QLD 4072, Australia
| | - Sebastián E. Illanes
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universidad de Los Andes, Santiago 7620001, Chile; (M.M.); (S.E.I.)
- Department of Obstetrics and Gynecology, Clínica Dávila, Santiago 7620001, Chile
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Garrido I, Ortega A, Hernández M, Fernández-Pozo L, Cabezas J, Espinosa F. Effect of antimony in soils of an Sb mine on the photosynthetic pigments and antioxidant system of Dittrichia viscosa leaves. Environ Geochem Health 2021; 43:1367-1383. [PMID: 32562108 DOI: 10.1007/s10653-020-00616-0] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
Antimony is a toxic element whose concentration in soil and water has been rising due to anthropogenic activities. This study focuses on its accumulation in leaves of Dittrichia viscosa growing in soils of an abandoned Sb mine, and the effect on oxidant/antioxidant systems and photosynthetic efficiency. The results showed leaves to have a high Sb accumulation capacity. The amount of total chlorophyll decreased depending on Sb concentration and of carotenoids increased slightly, with a consequent increase in carotenoid/chlorophyll ratio. Photosynthetic efficiency was unaffected. The amount of O 2 .- rose, although there was no increase in cell membrane damage, with lipid peroxidation levels being similar to normal. This response may be due to considerable increases that were observed in total phenolics, PPO activity, and enzymatic antioxidant system. SOD, POX, and DHAR activities increased in response to increased Sb amounts in leaves. The ascorbate/glutathione cycle was also affected, with strong increases observed in all of its components, and consequent increases in total contents of the ascorbate and glutathione pools. However, the ratio between reduced and oxidized forms declined, reflecting an imbalance between the two, especially that between GSH and GSSG. Efficient detoxification of Sb may take place either through increases in phenolics, carotenoids, and components of the glutathione-ascorbate cycle or through the enzymatic antioxidant system. Since Dittrichia viscosa accumulates large amounts of Sb without suffering oxidative damage, it could be used for phytoremediation.
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Affiliation(s)
- I Garrido
- Research Group of Physiology, Cellular and Molecular Biology of Plants, UEx, Av. Elvas, s/n, 06071, Badajoz, Spain
| | - A Ortega
- Research Group of Physiology, Cellular and Molecular Biology of Plants, UEx, Av. Elvas, s/n, 06071, Badajoz, Spain
| | - M Hernández
- European University of the Atlantic, Scientific and Technological Park of Cantabria, 39011, Santander, Spain
| | - L Fernández-Pozo
- Research Group of Environmental Resources Analysis, UEx, Avenida de Elvas, s/n, 06071, Badajoz, Spain
| | - J Cabezas
- Research Group of Environmental Resources Analysis, UEx, Avenida de Elvas, s/n, 06071, Badajoz, Spain
| | - F Espinosa
- Research Group of Physiology, Cellular and Molecular Biology of Plants, UEx, Av. Elvas, s/n, 06071, Badajoz, Spain.
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Bordagaray MJ, Fernández A, Garrido M, Astorga J, Hoare A, Hernández M. Systemic and Extraradicular Bacterial Translocation in Apical Periodontitis. Front Cell Infect Microbiol 2021; 11:649925. [PMID: 33816354 PMCID: PMC8017189 DOI: 10.3389/fcimb.2021.649925] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 01/05/2021] [Accepted: 03/01/2021] [Indexed: 12/19/2022] Open
Abstract
Apical periodontitis is an inflammatory disease of microbial etiology. It has been suggested that endodontic bacterial DNA might translocate to distant organs via blood vessels, but no studies have been conducted. We aimed first to explore overall extraradicular infection, as well as specifically by Porphyromonas spp; and their potential to translocate from infected root canals to blood through peripheral blood mononuclear cells. In this cross-sectional study, healthy individuals with and without a diagnosis of apical periodontitis with an associated apical lesion of endodontic origin (both, symptomatic and asymptomatic) were included. Apical lesions (N=64) were collected from volunteers with an indication of tooth extraction. Intracanal samples (N=39) and respective peripheral blood mononuclear cells from apical periodontitis (n=14) individuals with an indication of endodontic treatment, as well as from healthy individuals (n=14) were collected. The detection frequencies and loads (DNA copies/mg or DNA copies/μL) of total bacteria, Porphyromonas endodontalis and Porphyromonas gingivalis were measured by qPCR. In apical lesions, the detection frequencies (%) and median bacterial loads (DNA copies/mg) respectively were 70.8% and 4521.6 for total bacteria; 21.5% and 1789.7 for Porphyromonas endodontalis; and 18.4% and 1493.9 for Porphyromonas gingivalis. In intracanal exudates, the detection frequencies and median bacterial loads respectively were 100% and 21089.2 (DNA copies/μL) for total bacteria, 41% and 8263.9 for Porphyromonas endodontalis; and 20.5%, median 12538.9 for Porphyromonas gingivalis. Finally, bacteria were detected in all samples of peripheral blood mononuclear cells including apical periodontitis and healthy groups, though total bacterial loads (median DNA copies/μL) were significantly higher in apical periodontitis (953.6) compared to controls (300.7), p<0.05. Porphyromonas endodontalis was equally detected in both groups (50%), but its bacterial load tended to be higher in apical periodontitis (262.3) than controls (158.8), p>0.05; Porphyromonas gingivalis was not detected. Bacteria and specifically Porphyromonas spp. were frequently detected in endodontic canals and apical lesions. Also, total bacteria and Porphyromonas endodontalis DNA were detected in peripheral blood mononuclear cells, supporting their plausible role in bacterial systemic translocation.
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Affiliation(s)
- María José Bordagaray
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alejandra Fernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Mauricio Garrido
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Anilei Hoare
- Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Laboratory of Oral Microbiology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Pathology and Oral Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
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Jiménez C, Carvajal D, Hernández M, Valenzuela F, Astorga J, Fernández A. Levels of the interleukins 17A, 22, and 23 and the S100 protein family in the gingival crevicular fluid of psoriatic patients with or without periodontitis. An Bras Dermatol 2021; 96:163-170. [PMID: 33531183 PMCID: PMC8007492 DOI: 10.1016/j.abd.2020.08.008] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 08/04/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Psoriasis and periodontitis are immunologically mediated chronic inflammatory diseases. Epidemiologic evidence has linked both; however, the change of markers in gingival crevicular fluid has been poorly evaluated. OBJECTIVE To evaluate the levels of IL-17A, IL-22, IL-23, S100A7, S100A8, and S100A9 in gingival crevicular fluid of psoriatic and healthy subjects with and without periodontitis and their relations to psoriasis severity. METHODS Cross-sectional study. Sample comprised the following groups: healthy controls without periodontitis or with mild periodontitis (n=21), healthy controls with moderate or severe periodontitis (n=18), individuals with psoriasis without or mild periodontitis (n=11), and individuals with psoriasis and moderate or severe periodontitis (n=32). Levels of IL-17A, IL-22, IL-23, S100A8, and S100A9 were determined by multiplex assay and S100A7 was measured by ELISA. RESULTS No inter-group differences in the levels of IL-17A, IL-22, IL-23, and S100A7 were found. S100A8 levels were higher in psoriatic patients than controls (p<0.05). S100A8 was positively correlated with psoriasis severity in the group with psoriasis (p<0.05). S100A9 exceeded the detection limits. STUDY LIMITATIONS This pilot study presents a small sample size. CONCLUSIONS The concentrations of S100A8 were highest in psoriatic patients regardless of periodontal health/status. S100A8 was associated with the severity of psoriasis. The concentrations of interleukins and S100A7 were similar in psoriatic patients with or without periodontitis vs. healthy controls.
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Affiliation(s)
- Constanza Jiménez
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andrés Bello, Santiago, Chile
| | - Daniela Carvajal
- Department of Dermatology, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Marcela Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile; Department of Oral Pathology and Medicine, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Fernando Valenzuela
- Department of Dermatology, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Jessica Astorga
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alejandra Fernández
- Department of Oral Pathology, Faculty of Dentistry, Universidad Andrés Bello, Santiago, Chile; Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.
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Garcia-Lor A, Bermejo A, Morales J, Hernández M, Medina A, Cuenca J, Navarro L, Aleza P. Strategies to Produce Grapefruit-Like Citrus Varieties With a Low Furanocoumarin Content and Distinctive Flavonoid Profiles. Front Plant Sci 2021; 12:640512. [PMID: 33719319 PMCID: PMC7943927 DOI: 10.3389/fpls.2021.640512] [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] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
Pummelos and hybrids, such as grapefruits, have high furanocoumarin and low flavonoid contents. Furanocoumarins interact negatively with certain drugs, while flavonoids are antioxidant compounds with health benefits. To obtain new grapefruit-like varieties with low furanocoumarin and high flavonoid contents, diploid and triploid hybrid populations from crosses between diploid and tetraploid "Clemenules" clementine and diploid "Pink" pummelo were recovered and analyzed. With regard to furanocoumarins, triploids produce less bergapten, bergamottin and 6,7-DHB than diploids. Regarding flavonoids, triploids yielded more eriocitrin, narirutin, hesperidin and neohesperidin than diploids, whereas no differences were observed in neoeriocitrin and naringin. These results indicate that, the strategy to recover triploid hybrids by 4x × 2x crosses is more appropriate than the recovery of diploid hybrids by 2x × 2x crosses for obtaining grapefruit-like varieties of citrus with lower furanocoumarin and higher flavonoid contents.
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Córdova LA, Reyes M, Soto R, Hernández M, Cortés JE. Dysregulated healing response participates in the pathophysiology of temporomandibular joint ankylosis. J Craniomaxillofac Surg 2021; 49:592-597. [PMID: 33750637 DOI: 10.1016/j.jcms.2021.02.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 05/01/2020] [Revised: 12/02/2020] [Accepted: 02/15/2021] [Indexed: 12/01/2022] Open
Abstract
This study aimed to characterize samples from patients diagnosed with TMJ ankylosis, using both clinical and histological data. Both clinical and histological analyses of retrieved tissue samples from patients with primary TMJ ankyloses were performed retrospectively (1980-2012). All patients had been subjected to primary arthroplasty. Our study analyzed connective tissue differentiation, ossification patterns, and bone resorption, using histology and immunohistochemistry. Fifteen case records, with a sex ratio of 4:1 (men:woman) and a median age of 8 years, were collected. Six patient samples reported a previous inflammatory event. Histologically, 15 samples exhibited fibrous tissue. Among these, 13 displayed bone at different stages of maturity (fibrous/bony ankylosis). Eleven samples showed aberrant cartilage, characterized by hypertrophic chondrocyte-like cells at the bone/cartilage interface. Four samples revealed inflammatory infiltrate; in one case, this was organized as a lymphoid follicle. Eleven samples showed bone resorption by attached osteoclasts. Interestingly, non-attached osteoclasts were detected, suggesting locally impaired bone remodeling. An association between the presence of mature/lamellar bone and the presence of osteoclasts was observed (p = 0.03). No association was found between previous history of either trauma or infection and the histological type of ankylosis (p = 0.74). There was no association between the histological presence of inflammation or infection and the type of ankylosis (p = 0.63 and p = 0.87, respectively). Retrieved TMJ ankylosis tissues displayed both aberrant ossification and reduced focal bone resorption, suggesting a dysregulated healing response.
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Affiliation(s)
- Luis A Córdova
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile; Department of Oral and Maxillofacial Surgery, Clínica Las Condes, Estoril 450, Las Condes, Santiago, Chile; Department of Oral and Maxillofacial Surgery, Complejo Hospitalario San José, San José 1196, Independencia, Santiago, Chile; Craniofacial Translational Research Laboratory, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Montserrat Reyes
- Department of Oral Pathology and Medicine, Laboratory of Periodontal Biology, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Rubén Soto
- Department of Oral Pathology and Medicine, Laboratory of Periodontal Biology, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Marcela Hernández
- Department of Oral Pathology and Medicine, Laboratory of Periodontal Biology, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Juan E Cortés
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile; Department of Oral and Maxillofacial Surgery, Complejo Hospitalario San Borja Arriarán, Av. Sta. Rosa 1234, Santiago, Chile.
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Pericot-Nierga I, Turbau-Recio J, Bragado I, Hernández M. [A patient with Creutzfeldt-Jakob disease presenting with a motoneurone disease]. Rev Neurol 2021; 70:118. [PMID: 31994168 DOI: 10.33588/rn.7003.2019438] [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: 11/24/2022]
Affiliation(s)
- I Pericot-Nierga
- Hospital de Santa Caterina. Institut d'Assistència Sanitària, Salt, España
| | - J Turbau-Recio
- Hospital de Santa Caterina. Institut d'Assistència Sanitària, Salt, España
| | - I Bragado
- Hospital de Santa Caterina. Institut d'Assistència Sanitària, Salt, España
| | - M Hernández
- Hospital de Santa Caterina. Institut d'Assistència Sanitària, Salt, España
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Jiménez M, Hidalgo C, Stoore C, Corrêa F, Pereira I, Hernández M, Sáenz L, Benavides J, Ferreras MC, Royo M, Paredes R. Fasciola hepatica co-infection enhances Th1 immune response in the adventitial layer of non-fertile Echinococcus granulosus cysts. Vet Parasitol 2021; 290:109343. [PMID: 33422750 DOI: 10.1016/j.vetpar.2021.109343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/08/2020] [Revised: 12/24/2020] [Accepted: 12/27/2020] [Indexed: 11/18/2022]
Abstract
Cystic echinococcosis is a widespread zoonosis caused by the larval stage of the tapeworm Echinococcus granulosus. In intermediary hosts, two types of echinococcal cysts can be found: fertile, which produce protoscoleces, the infective form of the parasite to dogs; and infertile, that do not present protoscoleces and therefore are not able to continue with the parasite life cycle. The adventitial layer, the local immune response against the cyst, plays an important role in cyst fertility. Grazing cattle can often feature Fasciola hepatica co-infection, a parasite known to modulate the host systemic immune response. In this work the cellular Th1/Th2 immune profiles were evaluated in the adventitial layer of fertile and non-fertile cysts with and without co-infection with Fasciola hepatica. Measuring with immunohistochemistry and qPCR in adventitial layer, we report that non-fertile cysts present higher levels of Th1 cytokines (IFN-γ (P < 0.0001) and TNF-α (P < 0.05)), and fertile cysts have higher levels of Th2 cytokines (IL-4 (P < 0.001)). Co-infection with Fasciola hepatica is associated with a decrease in the expression of IL-4 (P < 0.05) and an increase in the expression of IFN-γ (P < 0.0001) in the adventitial layer of fertile cysts. Non-fertile cysts were associated with higher levels of Th1 cytokines in the adventitial layer, with IFN-γ expression enhanced by F. hepatica co-infection (P < 0.0001), confirming that polyparasitism should be considered in the treatment and control of naturally infected cattle.
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Affiliation(s)
- Mauricio Jiménez
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; Laboratorio de Biotecnología, LIMOR de Colombia S.A.S, Bogotá, Colombia
| | - Christian Hidalgo
- Instituto de Ciencias Agroalimentarias, Animales y Ambientales (ICA3), Universidad de O'Higgins, San Fernando, Chile
| | - Caroll Stoore
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Felipe Corrêa
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Ismael Pereira
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Marcela Hernández
- Laboratorio de Biología Periodontal y Departamento de Patología y Medicina Oral, Facultad de Odontología, Universidad de Chile, Santiago, Chile
| | - Leonardo Sáenz
- Laboratory of Veterinary Vaccines, Department of Animal Biology, Faculty of Veterinary and Animal Science, Universidad de Chile, Santiago, Chile
| | - Julio Benavides
- Dpto de Sanidad Animal, Instituto de Ganadería de Montaña (CSIC-Universidad de León), Facultad de Veterinaria, Campus de Vegazana s/n, León, Spain
| | - M Carmen Ferreras
- Dpto de Sanidad Animal, Instituto de Ganadería de Montaña (CSIC-Universidad de León), Facultad de Veterinaria, Campus de Vegazana s/n, León, Spain
| | - Marcos Royo
- Dpto de Sanidad Animal, Instituto de Ganadería de Montaña (CSIC-Universidad de León), Facultad de Veterinaria, Campus de Vegazana s/n, León, Spain
| | - Rodolfo Paredes
- Laboratorio de Medicina Veterinaria, Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile.
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Collins JR, Veras K, Hernández M, Hou W, Hong H, Romanos GE. Anti-inflammatory effect of salt water and chlorhexidine 0.12% mouthrinse after periodontal surgery: a randomized prospective clinical study. Clin Oral Investig 2021; 25:4349-4357. [PMID: 33389135 DOI: 10.1007/s00784-020-03748-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/18/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The purpose of this study was to compare the anti-inflammatory efficacy of sodium chloride- and a 0.12% chlorhexidine mouth rinses in patients undergoing minimal invasive periodontal surgery. MATERIALS AND METHODS Forty-seven patients with a diagnosis of periodontitis and indication for access flap procedure were randomly selected. Group A: a sodium chloride (salt)water-based mouth rinse (test group) or group B: a 0.12% chlorhexidine mouth rinse (control group) administered after surgery. Gingival Index (GI) were evaluated in the whole mouth and in the surgical site at baseline (T1), a week later (T2), and 12 weeks (T3) after the treatment. Total MMP activity was measured in GCF using a commercial kit and plate reader. Medians of total MMP activity and GI were compared for time intervals T1 vs. T2, T1 vs. T3, and T2 vs T3 using Friedman tests and Wilcoxon signed rank tests, and were also compared between test and control using Mann-WhitneyU tests at each timepoint. RESULTS The average GI values showed significant differences between baseline and T2 (p = 0.0005) and baseline and T3 (p = 0.003) in the test group. CONCLUSION The sodium chloride-mouth rinse use after periodontal surgery seems to have similar anti-inflammatory properties as CHX mouth rinse and can be used regularly postoperatively after periodontal surgical procedures. CLINICAL RELEVANCE The use of salt water mouthwash showed an anti-inflammatory effect similar to CHX 0.12% after minimal invasive periodontal surgery. Salt water mouthwash is accessible to the world population and can contribute on the healing process after periodontal surgery.
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Affiliation(s)
- James Rudolph Collins
- Department of Periodontology, School of Dentistry, Pontificia Universidad Católica Madre y Maestra (PUCMM), Santo Domingo, Dominican Republic.
| | - Kenia Veras
- Department of Periodontology, School of Dentistry, Pontificia Universidad Católica Madre y Maestra (PUCMM), Santo Domingo, Dominican Republic
| | - Marcela Hernández
- Department of Pathology and Oral Medicine, School of Dentistry, Universidad de Chile, Santiago, Chile
| | - Wei Hou
- Department of Family, Population and Preventive Medicine, School of Medicine, Stony Brook, NY, USA
| | - Houlin Hong
- Department of Family, Population and Preventive Medicine, School of Medicine, Stony Brook, NY, USA
| | - Georgios E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA
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Alvarez-Astorga A, García-Azorín D, Hernández M, de la Red H, Sotelo E, Uribe F, Guerrero A. Pain catastrophising in a population of patients with migraine. Neurología (English Edition) 2021. [DOI: 10.1016/j.nrleng.2018.10.021] [Citation(s) in RCA: 1] [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: 01/03/2023] Open
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Alvarez-Astorga A, García-Azorín D, Hernández M, de la Red H, Sotelo E, Uribe F, Guerrero A. Pensamiento catastrófico ante el dolor: presencia en una población de migrañosos. Neurologia 2021; 36:24-28. [DOI: 10.1016/j.nrl.2018.10.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/18/2018] [Accepted: 10/29/2018] [Indexed: 01/03/2023] Open
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Candel FJ, Barreiro P, San Román J, Abanades JC, Barba R, Barberán J, Bibiano C, Canora J, Cantón R, Calvo C, Carretero M, Cava F, Delgado R, García-Rodríguez J, González Del Castillo J, González de Villaumbrosia C, Hernández M, Losa JE, Martínez-Peromingo FJ, Molero JM, Muñoz P, Onecha E, Onoda M, Rodríguez J, Sánchez-Celaya M, Serra JA, Zapatero A. Recommendations for use of antigenic tests in the diagnosis of acute SARS-CoV-2 infection in the second pandemic wave: attitude in different clinical settings. Rev Esp Quimioter 2020; 33:466-484. [PMID: 33070578 PMCID: PMC7712344 DOI: 10.37201/req/120.2020] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 01/10/2023]
Abstract
The high transmissibility of SARS-CoV-2 before and shortly after the onset of symptoms suggests that only diagnosing and isolating symptomatic patients may not be sufficient to interrupt the spread of infection; therefore, public health measures such as personal distancing are also necessary. Additionally, it will be important to detect the newly infected individuals who remain asymptomatic, which may account for 50% or more of the cases. Molecular techniques are the "gold standard" for the diagnosis of SARS-CoV-2 infection. However, the massive use of these techniques has generated some problems. On the one hand, the scarcity of resources (analyzers, fungibles and reagents), and on the other the delay in the notification of results. These two facts translate into a lag in the application of isolation measures among cases and contacts, which favors the spread of the infection. Antigen detection tests are also direct diagnostic methods, with the advantage of obtaining the result in a few minutes and at the very "pointof-care". Furthermore, the simplicity and low cost of these tests allow them to be repeated on successive days in certain clinical settings. The sensitivity of antigen tests is generally lower than that of nucleic acid tests, although their specificity is comparable. Antigenic tests have been shown to be more valid in the days around the onset of symptoms, when the viral load in the nasopharynx is higher. Having a rapid and real-time viral detection assay such as the antigen test has been shown to be more useful to control the spread of the infection than more sensitive tests, but with greater cost and response time, such as in case of molecular tests. The main health institutions such as the WHO, the CDC and the Ministry of Health of the Government of Spain propose the use of antigenic tests in a wide variety of strategies to respond to the pandemic. This document aims to support physicians involved in the care of patients with suspected SC2 infection, in the context of a growing incidence in Spain since September 2020, which already represents the second pandemic wave of COVID-19.
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Affiliation(s)
- F J Candel
- Dr. Francisco Javier Candel. Enfermedades Infecciosas y Microbiología Clínica. Hospital Clínico San Carlos. Institutos IdISSC e IML. Profesor Asociado. Facultad de Medicina. UCM. Madrid. Spain.
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Hernández M, Vera-Gargallo B, Calabi-Floody M, King GM, Conrad R, Tebbe CC. Reconstructing Genomes of Carbon Monoxide Oxidisers in Volcanic Deposits Including Members of the Class Ktedonobacteria. Microorganisms 2020; 8:microorganisms8121880. [PMID: 33260993 PMCID: PMC7761526 DOI: 10.3390/microorganisms8121880] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/28/2020] [Revised: 11/13/2020] [Accepted: 11/24/2020] [Indexed: 12/02/2022] Open
Abstract
Microorganisms can potentially colonise volcanic rocks using the chemical energy in reduced gases such as methane, hydrogen (H2) and carbon monoxide (CO). In this study, we analysed soil metagenomes from Chilean volcanic soils, representing three different successional stages with ages of 380, 269 and 63 years, respectively. A total of 19 metagenome-assembled genomes (MAGs) were retrieved from all stages with a higher number observed in the youngest soil (1640: 2 MAGs, 1751: 1 MAG, 1957: 16 MAGs). Genomic similarity indices showed that several MAGs had amino-acid identity (AAI) values >50% to the phyla Actinobacteria, Acidobacteria, Gemmatimonadetes, Proteobacteria and Chloroflexi. Three MAGs from the youngest site (1957) belonged to the class Ktedonobacteria (Chloroflexi). Complete cellular functions of all the MAGs were characterised, including carbon fixation, terpenoid backbone biosynthesis, formate oxidation and CO oxidation. All 19 environmental genomes contained at least one gene encoding a putative carbon monoxide dehydrogenase (CODH). Three MAGs had form I coxL operon (encoding the large subunit CO-dehydrogenase). One of these MAGs (MAG-1957-2.1, Ktedonobacterales) was highly abundant in the youngest soil. MAG-1957-2.1 also contained genes encoding a [NiFe]-hydrogenase and hyp genes encoding accessory enzymes and proteins. Little is known about the Ktedonobacterales through cultivated isolates, but some species can utilise H2 and CO for growth. Our results strongly suggest that the remote volcanic sites in Chile represent a natural habitat for Ktedonobacteria and they may use reduced gases for growth.
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Affiliation(s)
- Marcela Hernández
- Johann Heinrich von Thünen Institut, Institut für Biodiversität, 50, 38116 Braunschweig, Germany;
- School of Environmental Sciences, Norwich Research Park, University of East Anglia, Norwich NR4 7TJ, UK
- Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany;
- Correspondence:
| | - Blanca Vera-Gargallo
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, 41012 Seville, Spain;
| | | | - Gary M. King
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA;
| | - Ralf Conrad
- Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany;
| | - Christoph C. Tebbe
- Johann Heinrich von Thünen Institut, Institut für Biodiversität, 50, 38116 Braunschweig, Germany;
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Lozares S, Gandía A, Font J, Villa D, Alba V, Jiménez S, Hernández M. PO-1350: In vivo dosimetry with XR-RV3 radiochromic films in intraoperative radiotherapy of the breast. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01369-4] [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: 11/27/2022]
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