Caracterización, influencia y manipulación de la microbiota gastrointestinal en salud y enfermedad

García-Mazcorro, José F.; Garza‐González, Elvira; Marroquín-Cardona, Alicia; Tamayo, J.L.

doi:10.1016/j.gastrohep.2015.01.004

Cited by 6 publications

(5 citation statements)

References 206 publications

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“…Escherichia coli is an ubiquitous Gram negative bacteria considered as one of the main constituent of the gastrointestinal tract of animals (37), humans (38), as well as reptiles such as turtles (39) and snakes (40). Nevertheless, there is almost no information about the presence and prevalence of E. coli pathotypes, such as DECs in the intestines of reptiles (41).…”

Section: Discussionmentioning

confidence: 99%

Captive Green Iguana Carries Diarrheagenic Escherichia coli Pathotypes

et al. 2020

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The green iguana appears to be a carrier for bacteria causing gastrointestinal infections in humans. The presence of diarrheagenic E. coli (DEC) pathotypes, however, has not been studied in this reptile. The aim of the current work was to investigate the prevalence of DEC in the intestines of 240 captive green iguanas, their phylogenetic groups, and the antibiotic susceptibility profile. E. coli strains were isolated from 41.7% (N = 100/240) of the intestinal content of green iguanas. DEC strains was identified in 25.9% of the screened population and were detected in the majority (62%, p = 0.009) of those reptiles carrying E. coli strains. Among DEC strains, STEC strains carrying the stx1 gene were the most prevalent pathotype isolated (38.7%), followed by EAEC and ETEC (27.4% each). Genetic markers of DEC strains belonging to the EHEC pathotype were not detected. More than a half of DEC strains were classified into the Clade I-II phylogroup (64.5%), followed by the phylogroup A (14.5%). The antibiotic susceptibility method demonstrated that a high proportion of DEC strains were resistance, or non-susceptible, to carbenicillin, amikacin, and ampicillin. We conclude that the green iguana kept in captivity is a carrier of DEC strains bearing resistance to first-line antibiotics, including penicillins. Given the increase presence of the green iguana in Latin American households, these reptiles represent a potential source of transmission to susceptible humans and therefore a potential source of gastrointestinal disease.

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Section: Discussionmentioning

confidence: 99%

Captive Green Iguana Carries Diarrheagenic Escherichia coli Pathotypes

et al. 2020

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“…One of the great limitations of these techniques is that it is impossible to ensure that the phenotypic behavior of a microorganism in the laboratory is identical to its behavior in vivo, due in part to the processes of metabolic symbiosis between microorganisms. In addition, the number of microorganisms that can be characterized with this technique is limited [24]. However, the emergence and rapid development of culture-independent or molecular techniques has made culture-dependent techniques nearly obsolete, and the characterization of GM is currently largely carried out using culture-independent techniques, as they allow scientists to easily identify a large proportion of bacterial diversity and provide rapid results [25,26].…”

Section: Introductionmentioning

confidence: 99%

The Role of Gut Microbiota in Gastrointestinal Symptoms of Children with ASD

Martínez-González

Andreo-Martínez

2019

Medicina

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Background and objectives: Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impaired communication, social interaction disorder, and repetitive behavior. Dysbiotic gut microbiota (GM) could be a contributing factor to the appearance of ASD, as gastrointestinal (GI) symptoms are comorbidities frequently reported in ASD. As there is a lack of reviews about the role played by GM in the GI symptoms of ASD, this work aimed to carry out a systematic review of current studies comparing the GM of children with ASD and GI symptoms with those of healthy controls in the last six years. Materials and Methods: The systematic review was performed following the PRISMA guidelines. The databases chosen were Web of Science, Scopus, PubMed, and PsycINFO, and the keywords were (gut* OR intestine* OR bowel* OR gastrointestinal*) AND (microbiota* OR microflora* OR bacteria* OR microbiome* OR flora* OR bacterial* OR bacteria* OR microorganism* OR feces* OR stool*) AND (autistic* OR autism* OR ASD*). Results: A total of 16 articles were included. Ten articles performed correlations analysis between GI symptoms and ASD. Among those 10 articles, 7 found differences between the GI symptoms present in children with ASD and healthy controls. The most common GI symptom was constipation. Among the seven articles that found differences, three performed correlations analysis between GI symptoms and gut microbe abundance. Candida, Prevotella, Streptococcus, and Veillonella showed higher and lower abundance, respectively, in children with ASD and GI symptoms in more than one article. Bacteroidetes, Firmicutes, Actinomyces, Dorea, Lactobacillus, Faecalibacterium prausnitzii, and Bacteroidetes/Firmicutes ratios showed abundance discrepancies. Conclusions: It is still too early to draw a conclusion about the gut microbes involved in GI symptoms of ASD. Future research should consider the relationship between ASD behavior, GM, and GI symptoms in a multidisciplinary way and homogenize sample characteristics.

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“…Since the gut is essentially sterile at birth, a well-balanced microbial intestinal colonization is necessary for the development of appropriate immune responses in early postnatal life and to establish immune homeostasis later in life. Thus, probiotics in gut microbiota play an important role in the regulation of intestinal microbial homeostasis by maintaining gastrointestinal barrier functions such as prevention of pathogens from surface adhesion, interference with the ability of pathogens to colonize which in turn help to maintain the whole body homeostasis [1,2]. Any disturbances in the microbial colonization associate with an increased risk of numerous diseases such as gastrointestinal and autoimmune diseases.…”

Section: Introductionmentioning

confidence: 99%

Biochemical Characterization of Probiotics Available in Bangladesh

Hossain¹,

Al‐Bari

Wahed³

2016

J. Sci. Res.

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The pervasive beneficial effects of probiotics are important for the maintenance of mammalian homeostasis. The probiotic products are consumed by people in their various forms available in Bangladesh. In this context, this study is taken into consideration to identify and characterize bacteria to confirm the scientific data needed for improvement in probiotic products as current therapies. Five probiotic samples were collected from pharmaceutical companies available in the retail pharmacy, Rajshahi. The probiotic samples are tested before expiration dates as marked on manufacturer packages. The culture media used were Czapek Dox (pH 5.3), MRS and nutrient broth and agar for the investigation of lactic acid bacteria. The identified lactic acid bacteria (LAB) were lactobacillus acidophyllus (LAB 1), Lactobacillus bulgaricus (LAB 2), Lactococcus lactis (LAB 3) and Biffidobacterium biffidum (LAB 4) based on morphological characteristics, catalase activities, milk coagulation, carbohydrate fermentation profiles, resistance to antibiotics and other biochemical tests. The rejuvenation of probiotics particularly LAB from the probiotic samples can be used in other purposes such as biopreservation of lemon, orange juices with better tastes and fermented products like curds as well as hygienic qualities of other dairy products.

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Caracterización, influencia y manipulación de la microbiota gastrointestinal en salud y enfermedad

Cited by 6 publications

References 206 publications

Captive Green Iguana Carries Diarrheagenic Escherichia coli Pathotypes

Captive Green Iguana Carries Diarrheagenic Escherichia coli Pathotypes

The Role of Gut Microbiota in Gastrointestinal Symptoms of Children with ASD

Biochemical Characterization of Probiotics Available in Bangladesh

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