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An Overview of the Molecular Methods in the Diagnosis of Gastrointestinal Infectious Diseases
1Department of Clinical Laboratory Science, Marshall University, 1 John Marshall Drive, Huntington, WV 25755, USA.
Abstract:
Gastrointestinal infectious diseases are very common worldwide and an important cause of morbidity and mortality, particularly in infants in developing countries. Diarrhea and other intestinal infections are caused by a wide range of bacteria, viruses, protozoa, and parasites. Conventional diagnosis of these infections is performed by culture, microscopy, and antigen detection immunoassays. The traditional culture and microscopy procedures are time-consuming, lack sensitivity, and require special laboratory setup and well-trained staff. However, based on the advancement in the molecular diagnostics and with the introduction of commercially available tests, traditional diagnostic techniques have been continuously replaced by these newer rapid antigen detection and molecular-based methods. This review summarizes and discusses the availability, advantages, and disadvantages of molecular methods in the detection and identification of human gastrointestinal pathogens.
Insights
Molecular methods offer rapid and sensitive detection of gastrointestinal pathogens, improving diagnosis over traditional techniques. This review examines their benefits and drawbacks for identifying infectious agents causing diarrhea and other intestinal infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Molecular Diagnostics
Background:
- Gastrointestinal infections are a major global health burden, causing significant morbidity and mortality, especially in young children in developing nations.
- These infections stem from diverse pathogens including bacteria, viruses, protozoa, and parasites.
- Conventional diagnostic methods like culture and microscopy are slow, insensitive, and require specialized resources.
Purpose of the Study:
- To review and discuss the current landscape of molecular diagnostic methods for human gastrointestinal pathogens.
- To evaluate the advantages and disadvantages of these advanced techniques compared to traditional diagnostics.
Main Methods:
- This review analyzes published data on commercially available molecular diagnostic tests.
- It focuses on methods for detecting and identifying a broad spectrum of gastrointestinal pathogens.
Main Results:
- Molecular methods provide faster and more sensitive detection of gastrointestinal pathogens than conventional techniques.
- These methods are increasingly replacing traditional diagnostic approaches due to their efficiency and accuracy.
- Various molecular platforms are available, each with specific benefits and limitations.
Conclusions:
- Molecular diagnostics represent a significant advancement in the identification of gastrointestinal pathogens.
- Their adoption can lead to improved patient outcomes and public health surveillance.
- Continued research and development are essential to further optimize these powerful diagnostic tools.
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