Gastrointestinal tract microbial community of Babylonia areolata and its diversity are closely correlated with the outbreak of disease

2021 ◽  
Author(s):  
Qianyun Zhao ◽  
Hanjie Gu ◽  
Wenqi Wang ◽  
Yonghua Hu
Keyword(s):  
Microbial Community ◽  
Gastrointestinal Tract ◽  
Babylonia Areolata

scholarly journals Stunted childhood growth is associated with decompartmentalization of the gastrointestinal tract and overgrowth of oropharyngeal taxa

2018 ◽  
Vol 115 (36) ◽  
pp. E8489-E8498 ◽  
Author(s):  
Pascale Vonaesch ◽  
Evan Morien ◽  
Lova Andrianonimiadana ◽  
Hugues Sanke ◽  
Jean-Robert Mbecko ◽  
...  
Keyword(s):  
Small Intestine ◽  
Microbial Community ◽  
Gastrointestinal Tract ◽  
Bacterial Overgrowth ◽  
Oral Bacteria ◽  
Sub Saharan Africa ◽  
Growth Delay ◽  
Current View ◽  
Fecal Samples ◽  
Small Intestinal

Linear growth delay (stunting) affects roughly 155 million children under the age of 5 years worldwide. Treatment has been limited by a lack of understanding of the underlying pathophysiological mechanisms. Stunting is most likely associated with changes in the microbial community of the small intestine, a compartment vital for digestion and nutrient absorption. Efforts to better understand the pathophysiology have been hampered by difficulty of access to small intestinal fluids. Here, we describe the microbial community found in the upper gastrointestinal tract of stunted children aged 2–5 y living in sub-Saharan Africa. We studied 46 duodenal and 57 gastric samples from stunted children, as well as 404 fecal samples from stunted and nonstunted children living in Bangui, Central African Republic, and in Antananarivo, Madagascar, using 16S Illumina Amplicon sequencing and semiquantitative culture methods. The vast majority of the stunted children showed small intestinal bacterial overgrowth dominated by bacteria that normally reside in the oropharyngeal cavity. There was an overrepresentation of oral bacteria in fecal samples of stunted children, opening the way for developing noninvasive diagnostic markers. In addition, Escherichia coli/Shigella sp. and Campylobacter sp. were found to be more prevalent in stunted children, while Clostridia, well-known butyrate producers, were reduced. Our data suggest that stunting is associated with a microbiome “decompartmentalization” of the gastrointestinal tract characterized by an increased presence of oropharyngeal bacteria from the stomach to the colon, hence challenging the current view of stunting arising solely as a consequence of small intestine overstimulation through recurrent infections by enteric pathogens.

Characterization of Planktonic and Biofilm Communities of Day-of-Hatch Chicks Cecal Microflora and Their Resistance to Salmonella Colonization†

2009 ◽  
Vol 72 (5) ◽  
pp. 959-965 ◽  
Author(s):  
CYNTHIA L. SHEFFIELD ◽  
TAWNI L. CRIPPEN ◽  
KATHLEEN ANDREWS ◽  
ROY J. BONGAERTS ◽  
DAVID J. NISBET
Keyword(s):  
Microbial Community ◽  
Gastrointestinal Tract ◽  
Continuous Flow ◽  
Salmonella Enterica Serovar Typhimurium ◽  
Bacterial Species ◽  
Serovar Typhimurium ◽  
Automated Ribotyping ◽  
Cecal Microflora ◽  
Planktonic Communities

Recent concerns about the use of antimicrobials in food animals have increased interest in the microbial ecology and biofilms within their gastrointestinal tract. This work used a continuous-flow chemostat system to model the microbial community within the ceca from day-of-hatch chicks and its ability to resist colonization by Salmonella enterica serovar Typhimurium. We characterized the biofilm and planktonic communities from five cultures by using automated ribotyping. Eight species from six different genera were identified. Overall, the planktonic communities were more diverse, with 40% of the cultures containing four or more bacterial species. Eighty percent of the biofilm communities contained only one or two species of bacteria. Enterococcus faecalis was the only species isolated from all communities. None of the resulting microbial communities was able to resist colonization by S. enterica serovar Typhimurium. This is the first study to provide a molecular-based characterization of the biofilm and planktonic communities found in day-of-hatch chicken cecal microflora cultures.

Effects of poly-β-hydroxybutyrate (PHB) on Siberian sturgeon (Acipenser baerii) fingerlings performance and its gastrointestinal tract microbial community

2011 ◽  
Vol 79 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Ebrahim H. Najdegerami ◽  
Tiet Ngoc Tran ◽  
Tom Defoirdt ◽  
Massimo Marzorati ◽  
Patrick Sorgeloos ◽  
...  
Keyword(s):  
Microbial Community ◽  
Gastrointestinal Tract ◽  
Siberian Sturgeon ◽  
Acipenser Baerii

scholarly journals Comparing the gut microbiome along the gastrointestinal tract of three sympatric species of wild rodents

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jason L. Anders ◽  
Mohamed Abdallah Mohamed Moustafa ◽  
Wessam Mohamed Ahmed Mohamed ◽  
Takashi Hayakawa ◽  
Ryo Nakao ◽  
...  
Keyword(s):  
Small Intestine ◽  
Microbial Community ◽  
Gastrointestinal Tract ◽  
Gut Microbiota ◽  
Host Species ◽  
Dietary Habits ◽  
Sympatric Species ◽  
Host Immune System ◽  
Wild Rodents ◽  
Apodemus Speciosus

AbstractHost–microbe interactions within the gastrointestinal tract (GIT) play a pivotal role in shaping host physiology, ecology, and life history. However, these interactions vary across gut regions due to changes in the physical environment or host immune system activity, thereby altering the microbial community. Each animal species may harbor their own unique microbial community due to host species-specific ecological traits such as dietary habits, micro-habitat preferences, and mating behavior as well as physiological traits. While the gut microbiota in wild animals has received much attention over the last decade, most studies comparing closely related species only utilized fecal or colon samples. In this study, we first compared the gut microbial community from the small intestine, cecum, colon, and rectum within three sympatric species of wild rodents (i.e. Apodemus speciosus, A. argenteus, and Myodes rufocanus). We then compared each gut region among host species to determine the effect of both gut region and host species on the gut microbiota. We found that the small intestine harbored a unique microbiome as compared to the lower GIT in all three host species, with the genus Lactobacillus in particular having higher abundance in the small intestine of all three host species. There were clear interspecific differences in the microbiome within all gut regions, although some similarity in alpha diversity and community structure within the small intestine was found. Finally, fecal samples may be appropriate for studying the lower GIT in these species, but not the small intestine.

scholarly journals Dietary niche breadth influences the effects of urbanization on the gut microbiota of sympatric rodents

2021 ◽  
Author(s):  
Jason Anders ◽  
Alexis Mychajliw ◽  
Mohamed Moustafa ◽  
Wessam Mohamed ◽  
Takashi Hayakawa ◽  
...  
Keyword(s):  
Microbial Community ◽  
Gastrointestinal Tract ◽  
Gut Microbiota ◽  
Urban Areas ◽  
Niche Breadth ◽  
Similar Species ◽  
Apodemus Speciosus ◽  
Dietary Shift ◽  
Animal Populations ◽  
Dietary Niche

Cities are among the most extreme forms of anthropogenic ecosystem modification and urbanization processes exert profound effects on animal populations through multiple ecological pathways. Increased access to human associated food items may alter species’ foraging behavior and diet, in turn modifying the normal microbial community of the gastrointestinal tract, ultimately impacting their health. It is crucial we understand the role of dietary niche breadth and the resulting shift in the gut microbiota as urban animals navigate novel dietary resources. We combined stable isotope analysis of hair and microbiome analysis of four gut regions across the gastrointestinal tract to investigate the effects of urbanization on the diet and gut microbiota of two sympatric species of rodent with different dietary niches; the omnivorous large Japanese field mouse (Apodemus speciosus) and the relatively more herbivorous grey red-backed vole (Myodes rufocanus). Both species exhibited an expanded dietary niche width within the urban areas potentially attributable to novel anthropogenic foods and altered resource availability. We detected a dietary shift in which urban A. speciosus consumed more terrestrial animal protein and M. rufocanus more plant leaves and stems. Such changes in resource use may be associated with an altered gut microbial community structure. There was an increased abundance of the presumably probiotic Lactobacillus in the small intestine of urban A. speciosus and potentially pathogenic Helicobacter in the colon of M. rufocanus. Together, these results suggest that even taxonomically similar species may exhibit divergent responses to urbanization with consequences for the gut microbiota and broader ecological interactions.

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