JUL 27, 2020 2:22 PM PDT

Bacteria More Lethal and Antibiotic Resistant in Space

WRITTEN BY: Annie Lennon

Research has shown that bacteria are more lethal and resistant to antibiotics when exposed to microgravity (a lack of gravity), such as in space. 

Microgravity has been shown to promote biofilm formation of bacteria. This is when bacteria grow and stick to each other, as well as stationary surfaces, from a matrix of polymer substances produced by a densely-packed cell colony. 

Biofilms are known not only to increase antibacterial resistance among bacteria but their ability to infect. They have already been known to grow on and attach to equipment on space stations, causing them to degrade. 

For example, biofilms have affected the Russian Mir space station's navigation window, air conditioning, oxygen electrolysis block, water recycling unit, and thermal control system. If left unresolved, prolonged exposure to these biofilms can lead to malfunction- something that could have particularly devastating effects during long-haul space flights, like those to Mars. 

Microgravity also seems to distort the structure of bacteria. Reducing certain bacteria in size, their smaller surface area leads to fewer molecule-cell interactions, which then lessens the effectiveness of antibiotics. 

A lack of gravity may also alter their behavior- such as sedimentation and buoyancy, and thus change the way they take in nutrients and are targeted by drugs. This could lead both to increased drug resistance and infectiousness in space. 

Although difficult problems to overcome, microgravity also has some benefits. For example, under a lack of gravity, it is easier to grow molecular crystals both larger and more symmetrically than on Earth, making them more effective at treating certain illnesses, including various cancers and Parkinson's disease. 

Although space as an environment poses many challenges, the more humans spend time there and are able to conduct experiments, the more likely we will be to overcome any problems. Although bacteria may be more deadly in space, perhaps drugs created there will be more potent. 

 

Sources: Science AlertEnvironmental MicrobiologyNature

About the Author
  • Science writer with keen interests in technology and behavioral biology. Her current focus is on the interplay between these fields to create meaningful interactions, applications and environments.
You May Also Like
MAY 24, 2020
Space & Astronomy
NASA Gives Green Light for Historic Crewed SpaceX Launch
MAY 24, 2020
NASA Gives Green Light for Historic Crewed SpaceX Launch
It’s no secret that NASA is working closely with private contractors like Boeing and SpaceX as a part of its Comme ...
JUN 08, 2020
Space & Astronomy
Space Agencies Are Developing Novel Space Junk Cleanup Tools
JUN 08, 2020
Space Agencies Are Developing Novel Space Junk Cleanup Tools
There are thousands of satellites orbiting the Earth today, with some residing in Low-Earth Orbit and others following a ...
JUN 15, 2020
Space & Astronomy
This Drop Tower Simulates Near-Zero Gravity On Earth
JUN 15, 2020
This Drop Tower Simulates Near-Zero Gravity On Earth
It’s almost impossible to replicate the effects of zero gravity here on Earth, and that’s one of the reasons ...
JUN 30, 2020
Chemistry & Physics
Axion: Could the Curious Particle "Kill Two Birds with One Stone"
JUN 30, 2020
Axion: Could the Curious Particle "Kill Two Birds with One Stone"
Physicists often ponder in an unusual way: they use one unsolved problem as a hypothetic solution to another, hoping to ...
JUL 19, 2020
Chemistry & Physics
Did interstellar organic material form water on Earth?
JUL 19, 2020
Did interstellar organic material form water on Earth?
A recent study published in Scientific Reports sheds light on how our planet’s water could have first come to be. ...
JUL 29, 2020
Chemistry & Physics
Molecular Footloose: Carbon Monoxide Molecules "Square Dance" with Each Other
JUL 29, 2020
Molecular Footloose: Carbon Monoxide Molecules "Square Dance" with Each Other
The act of "dancing" is not limited to humans, as scientists recently discovered. According to a group of Holl ...
Loading Comments...