Can Humans Reproduce In Zero-Gravity?
New research details biological difficulties in mammalian reproduction and development in space. Teruhiko Wakayama and his colleagues at the RIKEN Center for Developmental Biology in Kobe used a 3D clinostat to conduct experiments with mouse sperm and ova in a microgravity environment.
( The 3D clinostat apparatus )
The 3D clinostat apparatus uses rotation in all three dimensions to enable cell culture experiments under conditions that recreate zero-gravity. This allows research on the earliest stages of embryonic development in an environment that simulates space travel.
They performed in vitro fertilization (IVF) experiments with mouse sperm and ova, both within the clinostat and at regular gravity (1G), and determine that microgravity had minimal effects on fertilization. It may prove detrimental to subsequent development, however. Microgravity-cultured embryos successfully reached the two-cell stage and yielded viable offspring upon implantation into female mice, but at a significantly lower rate than their 1G counterparts. The researchers observed more severe negative effects when embryos were transplanted following longer culture periods in the clinostat.
Microgravity led to an overall reduction in the rate of blastocyst formation after 96 hours of culture, and closer examination of these blastocysts revealed that the differentiation of embryonic cells into trophectodermóthe tissue that nourishes the embryo and ultimately contributes to placenta formationówas markedly impaired.
This finding casts into doubt the science fictional notion that human beings can survive in zero gravity or in the microgravity environment of large asteroids (Belters, I'm talking to you!).
From Riken Research via Medgadget.
Scroll down for more stories in the same category. (Story submitted 11/27/2009)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 2 )
Related News Stories -
Three Clues To Limb Regeneration
'Forcing the energy transfer which allowed him to regrow his lost fingers...' - Frank Herbert, 1972.
Electric Head Patch Helps PTSD Patients
'Don't confuse this with the little ten amp neurosis models.' - Robert Sheckley, 1956.
MEDi Robot Calms The Nervous Patient
'Specially programmed stabilizing surrogate devices.' - Anne McCaffrey, 1990.
One-Shot Gene Therapy Cure $665K
One shot - one cure. Guaranteed.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Robot Arrested In Moscow
They should have thrown a net over him.
Oh Great, Fence-Climbing Robots
How long till they add the acid-tipped stingers?
Software Agents Fight Unseen On The Web
'...Worms and counter-worms loose on the data-net.'
Sandisk 1 Terabyte SD Memory Card Surfaces
'They should be Welton Fine-Grains, or they would be too bulky to ship...'
Carbyne, The Ultimate Form Of Carbon
'A continuous pseudo-one dimensional diamond crystal...'
Bradbury's Method Used In Search For Bombing Suspect
'He imagined thousands on thousands of faces peering into yards, into alleys...'
New Laser Space Debris Clearing More Subtle Than Clarke's
Rather than nudge them up, nudge them down.
Robots Learn To Swarm Safely
'They were bronzy gleams of smooth motion...'
Samsung's Smart Ring
'Crayn glanced at his finger watch...'
Proposal To Use Lasers To Analyze Asteroids
'Wendis stared thoughtfully at the brilliant lines on the spectroscope screen.'
Autonomous Sumo Robot Wrestling Video
'The expressionless face before me was therefore that of the golem-wrestler...'
Fashion Needs To Step Up Technology Education
'Keeping up with advances in fashion is almost as easy as reading - if you're reading science fiction.'
Youbionic 3D Printed Hand A Dark Knight Masterpiece
'A self-contained robot of precision quality usually joined to his right wrist'
Robots Now Know How To Cause Pain
'THE HATE I FEEL FOR HUMANS AT THIS MICRO-INSTANT...'
Once A Jolly Swagbot Camped By A Billabong
Under the shade of a coolibah tree...
Juno Gets Close To Jupiter, Fiction Gets Closer!
Amazing Juno spacecraft cozies up to the biggest planet in our solar system.
More SF in the News Stories
More Beyond Technovelgy science news stories