NDLI: Dynamics of predominant microbiota in the human gastrointestinal tract and change in luminal enzymes and immunoglobulin profile during high-altitude adaptation

Content Provider	Springer Nature Link
Author	Adak, Atanu Maity, Chiranjit Ghosh, Kuntal Pati, Bikas Ranjan Mondal, Keshab Chandra
Copyright Year	2013
Abstract	High-altitude (HA) visitors like pilgrims, trackers, scientists and military personnel face a group of nonspecific gastrointestinal (GI) symptoms during acclimatization to hypobaric hypoxia. In order to investigate the alteration of indigenous gastrointestinal microbiota in the development of such GI symptoms, an experiment was conducted for the enumeration of dominant cultivable faecal microbiota of 15 soldiers at base level (Delhi) and during their 15-day acclimatization at 3,505 m HA (Leh). At HA, faecal microbiota analysis revealed that total aerobes decreased significantly with increase of total and facultative anaerobes. The strict anaerobes like Bifidobacterium sp., Bacteroidetes sp. and Lactobacillus sp. exhibited positive growth direction index (GDI) like other predominant obligate anaerobes Clostridium perfringens and Peptostreptococcus sp. Different enzymes like amylase, proteinase and polyphenol hydrolase produced by different bacterial populations showed positive GDI, whereas phosphatase producers exhibited negative GDI. The levels of microbe-originated enzymes like amylase, proteinase, alkaline phosphatase and β-glucuronidase were also elevated during HA acclimatization. In addition, in vitro gas production ability was enhanced with increase of faecal immunoglobulins IgA and IgG. We demonstrated that hypoxic environment at HA had the potential to alter the gut microbial composition and its activities that may cause GI dysfunctions.
Starting Page	523
Ending Page	528
Page Count	6
File Format	PDF
ISSN	00155632
Journal	Folia Microbiologica
Volume Number	58
Issue Number	6
e-ISSN	18749356
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-03-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Microbiology Applied Microbiology Immunology Environmental Engineering/Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Microbiology

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