Science Fiction Dictionary
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

 

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 |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 2 )

Related News Stories - (" Medical ")

NextSense Earbuds Spy On Your Brain
'Your cephalochromoscope that cost you nine hundred dollars... colors and ceph patterns...' - Philip K. Dick, 1977.

Do Contagious Vaccines Work Better?
'...suppose we do plant an epidemic of Nine-Day Fever in Zone Red.' - Robert Heinlein, 1952.

Artificial, Implantable Kidney Prototype
'George Walt's corporate existence proved the workability of wholly mechanical organs...' - Philip K. Dick, 1964.

Ultra-short Pulse Laser Kills Bacteria In Vivo
'...coherent beams at precise wave-lengths passing through her flesh to zap foreign molecules within her body.' - Robert J. Sawyer, 2003.

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

Science Fiction Timeline
1600-1899
1900-1939
1940's   1950's
1960's   1970's
1980's   1990's
2000's   2010's

Current News

Your Martian Dream Home, Made By Fungi
'... it was the cheapest building material known.'

The Dune Ornithopter, Movie And Book
'The wings were at full spread-rest, their delicate metal interleavings extended.'

100X Improvement In DNA Information Storage
'A record that wouldn't get lost and couldn't be destroyed.'

NASA 'Holoports' Doctor Onto Space Station
Star Trek Voyager Emergency Medical Hologram

Should We Train AIs To Imagine A Future Of Horrific Disasters
'LET ME TELL YOU HOW MUCH I'VE COME TO HATE YOU SINCE I BEGAN TO LIVE.'

Mouth Haptics Invented By Frederik Pohl In 1965, CMU Now Has Prototype
'What he got was indeed a kiss. It was disconcerting. No kissing lips were visible.'

Two Towns Linked By Sculpture Portal In Real Time
'I am the Guardian of Forever.'

3D Printed Robotic Tentacles
'... articulate ropes of steel dangling'

Update: Musk Doubles Down On Optimus Prime Humanoid Robot
'I shall introduce myself. I am R. Daneel Olivaw... I am a robot. Were you not told?'

Elon Musk: Production Of Robotaxis In 2024
'How about the steering wheel... I don't need one.'

True Crime Live Podcasting In Fiction
'And loving it too, those millions. Bloodthirsty to the last one of them.'

AI Employment Decision Software Reconsidered By California Lawmakers
'They had screwed up and been blacklisted by Manna. They were back living with their parents or sleeping on the sofa with a friend.'

Six Ships Are Now Docked At The International Space Station!
It's getting crowded up there!

SUCHO Saving Ukraine's Libraries Digitally
'No human mind could ever hope to master even a small portion of what was being received every second, Sam thought, but it would all be there...'

Optimus Prime Tesla Robot Overall Humanoid Software Architecture
'I shall introduce myself. I am R. Daneel Olivaw... I am a robot. Were you not told?'

Vast Cosmic Structures And Spooky Alignments
'This postulates a force-field of partly electromagnetic character, generated by gyromagnetic action within atomic nuclei near the center of the galaxy.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.