1
|
González Segovia R, Romo Lozano Y, Rodríguez MG, Montañez Flores AL, González Macías J. Identification of serologically active Helicobacter pylori antigens related to alterations in serum pepsinogen levels. Rev Argent Microbiol 2023; 55:355-365. [PMID: 37385833 DOI: 10.1016/j.ram.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/20/2022] [Accepted: 04/14/2023] [Indexed: 07/01/2023] Open
Abstract
Gastric adenocarcinoma is associated with Helicobacter pylori infection. The transition to a carcinogenic process is preceded by glandular atrophy and serum levels of pepsinogen I and II (PGI and PGII) correlate with this type of gastric lesions. Possible associations of serum PG levels in relation to the frequency of serological activity against H. pylori antigens were studied. Serum samples from patients with gastric pathology associated with H. pylori (n=26) and asymptomatic individuals as controls (n=37) were used. Seroactive antigens were identified by immunoblot using a protein extract of H. pylori. The antibody titers anti-H. pylori and the concentration of PGs in serum was determined by ELISA. Thirty-one seroactive antigens were identified, nine of which exhibited a differential frequency between both groups (116.7, 68.8, 61.9, 54.9, 45.6, 38.3, 36.5, 33.8 and 30.1kDa) and only 3 were related to altered levels of PGs in serum. In the control group, the seropositivity of the 33.8kDa antigen was related to an increase in PGII, while the 68.8kDa antigen was related to normal PG values (decreased PGII and elevated PGI/PGII levels) indicating that seropositivity to this antigen could be a protective factor to gastric pathology. The seropositivity of the 54.9kDa antigen was related to altered values of PGs indicative of inflammation and gastric atrophy (increased in PGII and decreased in PGI/PGII). The identification of serum alterations in pepsinogen levels related to seropositivity to H. pylori 33.8, 54.9 and 68.8kDa antigens sets a precedent for further study as possible prognostic serological biomarkers.
Collapse
Affiliation(s)
- Rodolfo González Segovia
- Departamento de Microbiología, Universidad Autónoma de Aguascalientes, Av. Universidad 940, CP 20100, Aguascalientes, Mexico.
| | - Yolanda Romo Lozano
- Departamento de Microbiología, Universidad Autónoma de Aguascalientes, Av. Universidad 940, CP 20100, Aguascalientes, Mexico
| | - Martín Gerardo Rodríguez
- Departamento de Fisiología y Farmacología, Universidad Autónoma de Aguascalientes, Av. Universidad 940, CP 20100, Aguascalientes, Mexico
| | | | - Juan González Macías
- Servicio de Gastroenterología, Unidad Médica de Atención Ambulatoria del IMSS, Av. de la Convención de 1914 Nte. No. 102, Col. Industrial, CP 20030, Aguascalientes, Mexico
| |
Collapse
|
2
|
Khalilpour A, Kilic T, Khalilpour S, Álvarez MM, Yazdi IK. Proteomic-based biomarker discovery for development of next generation diagnostics. Appl Microbiol Biotechnol 2016; 101:475-491. [PMID: 28013407 DOI: 10.1007/s00253-016-8029-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 11/22/2016] [Accepted: 11/25/2016] [Indexed: 01/09/2023]
Abstract
In the post-genome age, proteomics is receiving significant attention because they provide an invaluable source of biological structures and functions at the protein level. The search for disease-specific biomarkers for diagnostic and/or therapeutic applications is one of the areas that proteomics is having a significant impact. Thus, the identification of a "good" biomarker enables a more accurate early diagnosis and prognosis of disease. Rapid advancements in mass spectrometry (MS) instrumentation, liquid chromatography MS (LCMS), protein microarray technology, and other protein profiling methodologies have a substantial expansion of our toolbox to identify disease-specific protein and peptide biomarkers. This review covers a selection of widely used proteomic technologies for biomarker discovery. In addition, we describe the most commonly used approaches for diagnosis based on proteomic biomarkers and further discuss trends and critical challenges during development of cost-effective rapid diagnostic tests and microfluidic diagnostic systems based on proteomic biomarkers.
Collapse
Affiliation(s)
- Akbar Khalilpour
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA. .,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Tugba Kilic
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA.,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.,Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, 35620, Izmir, Turkey.,Department of Biotechnology, Institute of Science, Ege University, 35100, Izmir, Turkey
| | - Saba Khalilpour
- Department of Pharmacological and Biomolecular Sciences (DiSFeB), Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
| | - Mario Moisés Álvarez
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA.,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Iman K Yazdi
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA.,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02139, USA
| |
Collapse
|
4
|
Tsongo L, Nakavuma J, Mugasa C, Kamalha E. Helicobacter pylori among patients with symptoms of gastroduodenal ulcer disease in rural Uganda. Infect Ecol Epidemiol 2015; 5:26785. [PMID: 26560860 PMCID: PMC4641891 DOI: 10.3402/iee.v5.26785] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 09/30/2015] [Accepted: 10/08/2015] [Indexed: 12/18/2022] Open
Abstract
Introduction To meet key millennium development goals, the rural population needs to be reached for health assessment and service delivery. Gastroduodenal ulcer disease is a common ailment affecting the health of people in Uganda. A cross-sectional study was conducted at Bwera Hospital in Kasese district of western Uganda, to establish the prevalence and predisposing factors of Helicobacter pylori among gastroduodenal ulcer disease patients. Methods A sample of 174 patients with symptoms of gastroduodenal ulcer disease was purposively obtained. Using two laboratory test methods, the prevalence of H. pylori among these patients was determined. A structured questionnaire was administered to participants to establish their demographic background and selected aspects of their lifestyle. Finally, the results obtained by enzyme-linked immunosorbent assay (ELISA) and immunochromatographic rapid test (IRT) were compared. Results We established the prevalence of H. pylori as 29.9% (52/174) by ELISA and 37.4% (65/174) by IRT. Cigarette smoking, poor sanitation, and lack of formal education were the significant predisposing factors with p-values <0.05. The two tests gave identical results in 87.9% of the patients. Discussion The prevalence of H. pylori by IRT and ELISA test methods was similar to what has been reported elsewhere in developed countries; but was lower than previously reported in developing countries including Uganda. The previous studies in Uganda were carried out in the urban population and on young children; and some used antibody-detection methods only, therefore leading to different prevalence as a result of difference in study population and methods.
Collapse
Affiliation(s)
- Lawrence Tsongo
- College of Veterinary Medicine, School of Biosafety, Biosecurity and Biomedical Laboratory Sciences, Makerere University, Kampala, Uganda.,School of Allied Health Sciences, International Health Sciences University, Kampala, Uganda.,Department of Health Sciences (Biomedical Sciences), Kisubi Brothers University College, Entebbe, Uganda;
| | - Jessica Nakavuma
- College of Veterinary Medicine, School of Biosafety, Biosecurity and Biomedical Laboratory Sciences, Makerere University, Kampala, Uganda
| | - Claire Mugasa
- College of Veterinary Medicine, School of Biosafety, Biosecurity and Biomedical Laboratory Sciences, Makerere University, Kampala, Uganda
| | - Edwin Kamalha
- Faculty of Engineering, Busitema University, Tororo, Uganda.,The GEMTEX Laboratory, Lille 1 University of Science and Technology-ENSAIT, Lille North, France
| |
Collapse
|