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Villalva M, Silvan JM, Alarcón-Cavero T, Villanueva-Bermejo D, Jaime L, Santoyo S, Martinez-Rodriguez AJ. Reply to Frański, R.; Beszterda-Buszczak, M. Comment on "Villalva et al. Antioxidant, Anti-Inflammatory, and Antibacterial Properties of an Achillea millefolium L. Extract and Its Fractions Obtained by Supercritical Anti-Solvent Fractionation against Helicobacter pylori. Antioxidants 2022, 11, 1849". Antioxidants (Basel) 2023; 12:1384. [PMID: 37507923 PMCID: PMC10376723 DOI: 10.3390/antiox12071384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/29/2023] [Accepted: 06/01/2023] [Indexed: 07/30/2023] Open
Abstract
Franski and Beszterda-Buszczak [...].
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Affiliation(s)
- Marisol Villalva
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/ Nicolás Cabrera, 9, Cantoblanco Campus, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Jose Manuel Silvan
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/ Nicolás Cabrera, 9, Cantoblanco Campus, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Teresa Alarcón-Cavero
- Microbiology Department, Hospital Universitario de La Princesa, 28006 Madrid, Spain
- Department of Preventive Medicine, Public Health and Microbiology, School of Medicine, Autonomous University of Madrid, 28029 Madrid, Spain
| | - David Villanueva-Bermejo
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/ Nicolas Cabrera 9, Cantoblanco Campus, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Laura Jaime
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/ Nicolas Cabrera 9, Cantoblanco Campus, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Susana Santoyo
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/ Nicolas Cabrera 9, Cantoblanco Campus, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Adolfo J Martinez-Rodriguez
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/ Nicolás Cabrera, 9, Cantoblanco Campus, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Villalva M, Silvan JM, Alarcón-Cavero T, Villanueva-Bermejo D, Jaime L, Santoyo S, Martinez-Rodriguez AJ. Antioxidant, Anti-Inflammatory, and Antibacterial Properties of an Achillea millefolium L. Extract and Its Fractions Obtained by Supercritical Anti-Solvent Fractionation against Helicobacter pylori. Antioxidants (Basel) 2022; 11:antiox11101849. [PMID: 36290572 PMCID: PMC9598488 DOI: 10.3390/antiox11101849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
The main objective of this work is to evaluate the potential utility of an Achillea millefolium extract (yarrow extract, YE) in the control of H. pylori infection. The supercritical anti-solvent fractionation (SAF) process of YE allowed the obtaining of two different fractions: yarrow’s precipitated fraction (YPF), enriched in most polar phenolic compounds (luteolin-7-O-glucoside, luteolin, and 3,5-dicaffeoylquinic acid), and yarrow’s separator fraction (YSF), enriched in monoterpenes and sesquiterpenes, mainly containing camphor, artemisia ketone, and borneol. YE was effective in reducing reactive oxygen species (ROS) production in human gastric AGS cells by 16% to 29%, depending on the H. pylori strain. YPF had the highest inhibitory activity (38–40%) for ROS production. YE modulated the inflammatory response in AGS gastric cells, decreasing IL-8 production by 53% to 64%. This IL-8 inhibition also showed a strain-dependent character. YPF and YSF exhibited similar behavior, reducing IL-8 production, suggesting that both phenolic compounds and essential oils could contribute to IL-8 inhibition. YSF showed the highest antibacterial activity against H. pylori (6.3–7.1 log CFU reduction, depending on the strain) and lower MIC (0.08 mg/mL). Results obtained have shown that YE and SAF fractions (YPF and YSF) were effective as antioxidant, anti-inflammatory, and antibacterial agents regardless of the H. pylori strain characteristics.
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Affiliation(s)
- Marisol Villalva
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolás Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain
| | - Jose Manuel Silvan
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolás Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain
| | - Teresa Alarcón-Cavero
- Microbiology Department, Hospital Universitario de La Princesa, 28006 Madrid, Spain
- Department of Preventive Medicine, Public Health and Microbiology, School of Medicine, Autonomous University of Madrid, 28029 Madrid, Spain
| | - David Villanueva-Bermejo
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain
| | - Laura Jaime
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain
| | - Susana Santoyo
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain
| | - Adolfo J. Martinez-Rodriguez
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolás Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain
- Correspondence: ; Tel.: +34-91-001-79-64
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Villalva M, Silvan JM, Guerrero-Hurtado E, Gutierrez-Docio A, Navarro del Hierro J, Alarcón-Cavero T, Prodanov M, Martin D, Martinez-Rodriguez AJ. Influence of In Vitro Gastric Digestion of Olive Leaf Extracts on Their Bioactive Properties against H. pylori. Foods 2022; 11:foods11131832. [PMID: 35804647 PMCID: PMC9265983 DOI: 10.3390/foods11131832] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 02/07/2023] Open
Abstract
The aim of this work was to evaluate the influence of in vitro gastric digestion of two olive leaf extracts (E1 and E2) on their chemical composition and bioactive properties against Helicobacter pylori (H. pylori), one of the most successful and prevalent human pathogens. HPLC-PAD/MS analysis and anti-inflammatory, antioxidant, and antibacterial activities of both olive leaf extracts were carried out before and after their in vitro gastric digestion. The results showed that gastric digestion produced modifications of the chemical composition and bioactive properties of both olive leaf extracts. The main compounds in the extract E1 were hydroxytyrosol and its glucoside derivatives (14,556 mg/100 g), presenting all the identified compounds a more polar character than those found in the E2 extract. E2 showed a higher concentration of less polar compounds than E1 extract, with oleuropein (21,419 mg/100 g) being the major component. Gastric digestion during the fasted state (pH 2) induced an overall decrease of the most identified compounds. In the extract E1, while the anti-inflammatory capacity showed only a slight decrease (9% of IL-8 production), the antioxidant properties suffered a drastic drop (23% of ROS inhibition), as well as the antibacterial capacity. However, in the extract E2, these changes caused an increase in the anti-inflammatory (19% of IL-8 production) and antioxidant activity (9% of ROS inhibition), which could be due to the hydrolysis of oleuropein and ligustroside into their main degradation products, hydroxytyrosol and tyrosol, but the antibacterial activity was reduced. Gastric digestion during fed state (pH 5) had less influence on the composition of the extracts, affecting in a lesser degree their anti-inflammatory and antioxidant activity, although there was a decrease in the antibacterial activity in both extracts similar to that observed at pH 2.
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Affiliation(s)
- Marisol Villalva
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolás Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (M.V.); (J.M.S.)
| | - Jose Manuel Silvan
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolás Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (M.V.); (J.M.S.)
| | - Esperanza Guerrero-Hurtado
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (J.N.d.H.); (M.P.); (D.M.)
| | - Alba Gutierrez-Docio
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (J.N.d.H.); (M.P.); (D.M.)
| | - Joaquín Navarro del Hierro
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (J.N.d.H.); (M.P.); (D.M.)
| | - Teresa Alarcón-Cavero
- Microbiology Department, Hospital Universitario de La Princesa, Sanitaria Princesa Research Institute, 28006 Madrid, Spain;
- Department of Preventive Medicine, Public Health and Microbiology, School of Medicine, Autonomous University of Madrid, 28029 Madrid, Spain
| | - Marin Prodanov
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (J.N.d.H.); (M.P.); (D.M.)
| | - Diana Martin
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolas Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (J.N.d.H.); (M.P.); (D.M.)
| | - Adolfo J. Martinez-Rodriguez
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), C/Nicolás Cabrera, 9. Cantoblanco Campus, Autonomous University of Madrid, 28049 Madrid, Spain; (M.V.); (J.M.S.)
- Correspondence: ; Tel.: +34-91-001-7964
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Silvan JM, Guerrero-Hurtado E, Gutiérrez-Docio A, Alarcón-Cavero T, Prodanov M, Martinez-Rodriguez AJ. Olive-Leaf Extracts Modulate Inflammation and Oxidative Stress Associated with Human H. pylori Infection. Antioxidants (Basel) 2021; 10:2030. [PMID: 34943133 PMCID: PMC8698654 DOI: 10.3390/antiox10122030] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/11/2021] [Accepted: 12/18/2021] [Indexed: 12/15/2022] Open
Abstract
Helicobacter pylori (H. pylori) is one of the major human pathogens and the main cause of pathological damages that can progress from chronic gastritis to gastric cancer. During the colonization of gastric mucosa, this bacterium provokes a strong inflammatory response and subsequent oxidative process, which are associated with tissue damage. Therefore, the objective of this research was to evaluate the ability of two olive-leaf extracts (E1 and E2) to modulate the inflammatory response and oxidative stress in H. pylori-infected human gastric AGS cells. The obtained results showed that both extracts significantly decreased interleukin-8 (IL-8) secretion and reactive oxygen species (ROS) production in human gastric AGS cells. Both extracts also showed antibacterial activity against different H. pylori strains. HPLC-PAD-MS characterization demonstrated that extract E1 was mainly composed of highly hydrophilic compounds, such as hydroxytyrosol (HT) and its glucosides, and it was the most effective extract as an antibacterial agent. In contrast, extract E2 was composed mostly of moderately hydrophilic compounds, such as oleuropein (OLE), and it was more effective than extract E1 as an anti-inflammatory agent. Both extracts exhibited similar potential to decrease ROS production. These results show the importance of standardizing the extract composition according to the bioactive properties that should be potentiated.
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Affiliation(s)
- Jose Manuel Silvan
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), Cantoblanco Campus, Autonomous University of Madrid, C/Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Esperanza Guerrero-Hurtado
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CEI, CSIC-UAM), Cantoblanco Campus, Autonomous University of Madrid, C/Nicolás Cabrera 9, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (M.P.)
| | - Alba Gutiérrez-Docio
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CEI, CSIC-UAM), Cantoblanco Campus, Autonomous University of Madrid, C/Nicolás Cabrera 9, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (M.P.)
| | - Teresa Alarcón-Cavero
- Microbiology Department, Hospital Universitario de La Princesa, 28006 Madrid, Spain;
- Department of Preventive Medicine, Public Health and Microbiology, School of Medicine, Autonomous University of Madrid, 28029 Madrid, Spain
| | - Marin Prodanov
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL, CEI, CSIC-UAM), Cantoblanco Campus, Autonomous University of Madrid, C/Nicolás Cabrera 9, 28049 Madrid, Spain; (E.G.-H.); (A.G.-D.); (M.P.)
| | - Adolfo J. Martinez-Rodriguez
- Microbiology and Food Biocatalysis Group (MICROBIO), Department of Biotechnology and Food Microbiology, Institute of Food Science Research (CIAL, CSIC-UAM), Cantoblanco Campus, Autonomous University of Madrid, C/Nicolás Cabrera 9, 28049 Madrid, Spain
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Miqueleiz-Zapatero A, Alba-Rubio C, Domingo-García D, Cantón R, Gómez-García de la Pedrosa E, Aznar-Cano E, Leiva J, Montes M, Sánchez-Romero I, Rodríguez-Díaz JC, Alarcón-Cavero T. First national survey on the diagnosis of Helicobacter pylori infection in Clinical Microbiology Laboratories in Spain. Enferm Infecc Microbiol Clin 2020. [DOI: 10.1016/j.eimce.2019.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Miqueleiz-Zapatero A, Alba-Rubio C, Domingo-García D, Cantón R, Gómez-García de la Pedrosa E, Aznar-Cano E, Leiva J, Montes M, Sánchez-Romero I, Rodríguez-Díaz JC, Alarcón-Cavero T. First national survey of the diagnosis of Helicobacter pylori infection in Clinical Microbiology Laboratories in Spain. Enferm Infecc Microbiol Clin 2020; 38:410-416. [PMID: 31987710 DOI: 10.1016/j.eimc.2019.11.008] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The aim of this study was to know, through a national survey, the methods and techniques used for the diagnosis of Helicobacter pylori (Hp) in the different Clinical Microbiology Services/Laboratories in Spain, as well as antibiotic resistance data. METHODS The survey requested information about the diagnostic methods performed for Hp detection in Clinical Microbiology laboratories, including serology, stool antigen, culture from gastric biopsies, and PCR. In addition, the performance of antibiotic susceptibility was collected. Data on the number of samples processed in 2016, positivity of each technique and resistance data were requested. The survey was sent by email (October-December 2017) to the heads of 198 Clinical Microbiology Laboratories in Spain. RESULTS Overall, 51 centers from 29 regions answered the survey and 48/51 provided Hp microbiological diagnostic testing. Concerning the microbiological methods used to diagnose Hp infection, the culture of gastric biopsies was the most frequent (37/48), followed by stool antigen detection (35/48), serology (19/48) and biopsy PCR (5/48). Regarding antibiotic resistance, high resistance rates were observed, especially in metronidazole and clarithromycin (over 33%). CONCLUSION Culture of gastric biopsies was the most frequent method for detection of Hp, but the immunochromatographic stool antigen test was the one with which the largest number of samples were analyzed. Nowadays, in Spain, it concerns the problem of increased antibiotic resistance to 'first-line' antibiotics.
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Affiliation(s)
- Ana Miqueleiz-Zapatero
- Servicio de Microbiología, Hospital Universitario de la Princesa e Instituto Investigación Princesa (IP), Madrid, España; Servicio de Microbiología, Complejo Hospitalario de Navarra, Pamplona, España.
| | - Claudio Alba-Rubio
- Servicio de Microbiología, Hospital Universitario de la Princesa e Instituto Investigación Princesa (IP), Madrid, España; Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, España
| | - Diego Domingo-García
- Servicio de Microbiología, Hospital Universitario de la Princesa e Instituto Investigación Princesa (IP), Madrid, España
| | - Rafael Cantón
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal e Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, España
| | - Elia Gómez-García de la Pedrosa
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal e Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, España
| | | | - José Leiva
- Servicio de Microbiología, Clínica Universidad de Navarra e Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, España
| | - Milagrosa Montes
- Servicio de Microbiología, Hospital Universitario Donostia - Instituto Biodonostia, San Sebastián, España
| | - Isabel Sánchez-Romero
- Servicio de Microbiología, Hospital Universitario Puerta del Hierro, Majadahonda, España
| | | | - Teresa Alarcón-Cavero
- Servicio de Microbiología, Hospital Universitario de la Princesa e Instituto Investigación Princesa (IP), Madrid, España
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del Campo-Moreno R, Alarcón-Cavero T, D’Auria G, Delgado-Palacio S, Ferrer-Martínez M. Microbiota en la salud humana: técnicas de caracterización y transferencia. Enferm Infecc Microbiol Clin 2018; 36:241-245. [DOI: 10.1016/j.eimc.2017.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 02/17/2017] [Indexed: 12/22/2022]
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Balsalobre-Arenas L, Alarcón-Cavero T. Rapid diagnosis of gastrointestinal tract infections due to parasites, viruses, and bacteria. Enferm Infecc Microbiol Clin 2017; 35:367-376. [PMID: 28238506 PMCID: PMC7103346 DOI: 10.1016/j.eimc.2017.01.002] [Citation(s) in RCA: 5] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 01/14/2017] [Indexed: 12/31/2022]
Abstract
Rapid diagnostic techniques are valuable tools in the diagnosis of gastrointestinal infections, especially for the detection of some microorganisms and in certain groups of patients. While antigen detection techniques are widely used in Clinical Microbiology laboratories, for the diagnosis of viruses, some parasites and some bacteria, molecular techniques are routinely used only for some pathogens (such as Clostridium difficile). However, molecular techniques are constantly evolving, and they allow a rapid diagnosis for an increasing number of pathogens, with high sensitivity and specificity. In addition, they are also able to detect virulence factors or resistance mechanisms. Syndromic surveillance systems, which detect different pathogens simultaneously, are very promising because they enable the most frequent pathogens to be diagnosed in a few hours and they can be very useful in certain patients. For the diagnosis of Helicobacter pylori infection, molecular techniques are able to detect bacteria and its resistance to clarithromycin and levofloxacin, allowing the most appropriate treatment to be selected for each patient when bacterial culture is not possible.
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Affiliation(s)
- Luz Balsalobre-Arenas
- Servicio de Microbiología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Madrid, España
| | - Teresa Alarcón-Cavero
- Servicio de Microbiología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Madrid, España; Departamento de Medicina Preventiva, Salud Publica y Microbiologia, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, España.
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Balsalobre-Arenas L, Alarcón-Cavero T. Rapid diagnosis of gastrointestinal tract infections due to parasites, viruses, and bacteria. Enfermedades infecciosas y microbiologia clinica (English ed ) 2017. [PMCID: PMC7172322 DOI: 10.1016/j.eimce.2017.01.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Rapid diagnostic techniques are valuable tools in the diagnosis of gastrointestinal infections, especially for the detection of some microorganisms and in certain groups of patients. While antigen detection techniques are widely used in Clinical Microbiology laboratories, for the diagnosis of viruses, some parasites and some bacteria, molecular techniques are routinely used only for some pathogens (such as Clostridium difficile). However, molecular techniques are constantly evolving, and they allow a rapid diagnosis for an increasing number of pathogens, with high sensitivity and specificity. In addition, they are also able to detect virulence factors or resistance mechanisms. Syndromic surveillance systems, which detect different pathogens simultaneously, are very promising because they enable the most frequent pathogens to be diagnosed in a few hours and they can be very useful in certain patients. For the diagnosis of Helicobacter pylori infection, molecular techniques are able to detect bacteria and its resistance to clarithromycin and levofloxacin, allowing the most appropriate treatment to be selected for each patient when bacterial culture is not possible.
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Martín-Ramírez A, Girón-Moreno RM, Domingo-García D, Alarcón-Cavero T. [Rapid identification of Mycobacterium abscessus in cystic fibrosis patients]. Rev Esp Quimioter 2016; 29:111-112. [PMID: 26946526] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Alexandra Martín-Ramírez
- Alexandra Martín-Ramírez, Servicio Microbiología y Parasitología, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria Princesa, Calle Diego de León, 62, 28006, Madrid, Spain.
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