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Quantification of Intestinal Lactobacillus Species in Children with Functional Constipation by Quantitative Real-Time PCR

Authors Jomehzadeh N, Javaherizadeh H, Amin M, Rashno M, Teimoori A

Received 23 February 2020

Accepted for publication 17 April 2020

Published 5 May 2020 Volume 2020:13 Pages 141—150

DOI https://doi.org/10.2147/CEG.S250755

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Prof. Dr. Wing-Kin Syn


Nabi Jomehzadeh,1– 3 Hazhir Javaherizadeh,4 Mansour Amin,2,3 Mohammad Rashno,1 Ali Teimoori5

1Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; 2Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; 3Department of Microbiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; 4Alimentary Tract Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Khouzestan, Iran; 5Department of Virology, Faculty of Medicine, Hamedan University of Medical Sciences, Hamedan, Iran

Correspondence: Mansour Amin
Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Tel +98 9163061096
Fax +98 61-3333 2036
Email mnsamin@yahoo.com

Background: Functional constipation is a common and annoying gastrointestinal disorder among children worldwide in which the intestinal microbiota composition plays a fundamental role. This study aimed to compare the quantity of main intestinal Lactobacillus species in constipated children and healthy controls.
Materials and Methods: Fecal samples were collected from 40 children fulfilling Rome IV criteria for functional constipation and 40 healthy volunteers. Quantitative real-time polymerase chain reaction (qPCR) method with species-specific primers was used to investigate seven main Lactobacillus species in fecal samples.
Results: Lactobacillus strains of the patient group were different from the healthy controls, main differences being noticeable decrease in the population quantity of Lactobacillus reuteri (mean 102.61 CFU/gram feces) and lower abundance of Lactobacillus fermentum (p< 0.0001).
Conclusion: Lactobacillus species might be quantitatively altered in childhood functional constipation. Our findings on the different species of Lactobacillus population showed significantly decreased quantity in the patient group compared with the healthy subjects.

Keywords: constipation, Lactobacillus, microbiota, quantitative real-time PCR

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