Researchers study microbial interactions in International Space Station
New Delhi, 21st October 2022: Along with opening the doors of space travel to the common people, the efforts of researchers are continuing to ensure that travel is safer into the sky. Researchers at the Indian Institute of Technology Madras (IIT Madras) and NASA Jet Propulsion Laboratory (JPL) have studied the interactions between microbes in the International Space Station (ISS). The study will help devise strategies for the disinfection of space stations to minimise any potential impact of microbes on the health of astronauts. During spaceflight, crews may have altered immunity and limited access to terrestrial medical facilities. Therefore, studying the microbes inhabiting the space station becomes important to understand the risks associated with short-term and long-term space travel on the health of astronauts. The present study was motivated by the earlier observations of the dominance of Klebsiella pneumoniae on the surfaces of the ISS. This pathogen has been known to cause pneumonia and other nosocomial infections. The researchers were broadly interested in understanding how this bacteria affects the growth of other microbes in the vicinity and the possible implications it could have. The researchers analysed the microbial sample data taken across three space flights at seven locations on the ISS. The study found that Klebsiella pneumoniae, a major microbe that resides on the ISS, is beneficial to various other microbes also present on the ISS, especially the bacteria from the Pantoeagenus. However, it was found that its presence was hampering the growth of Aspergillus fungus. This computational observation was further tested through laboratory experiments, and it was found that the presence of K. pneumoniae was indeed detrimental to the growth of the Aspergillus fungus. Dr Karthik Raman, Associate Professor at the Bhupat & Jyoti Mehta School of Biosciences and a core member of the Robert Bosch Centre for Data Science and Artificial Intelligence (RBCDSAI), IIT Madras, collaborated with Nitin Kumar Singh and Dr Kasthuri Venkateswaran, Senior Research Scientist at JPL. Dr Karthik Raman, IIT Madras, said, “The microbiome of the built environment has a huge impact on human health. Controlled environments such as the ISS harbour a variety of…
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