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Tag: animals

Study: Non-addictive painkiller is safe, effective in animals

Study: Non-addictive painkiller is safe, effective in animals

Health
Aug. 30 (UPI) -- Scientists have developed a safe and non-addictive painkiller as an alternative to current opioids, according to a study of animals. A new chemical compound called AT-121 suppressed the addictive effects of opioids but produced morphine-like analgesic effects in non-human primates. The research by scientists at the Wake Forest School of Medicine was published Wednesday in the journal Science Translational Medicine. "Misuse of prescription opioids, opioid addiction and overdose underscore the urgent need for developing addiction-free effective medications for treating severe pain," the researchers wrote in the study. The National Institute on Drug Abuse supported the research. "In our study, we found AT-121 to be safe and non-addictive, as well as an effective pain medica...
Earth's earliest animals were strange frond-like sea creatures from the Ediacaran period

Earth's earliest animals were strange frond-like sea creatures from the Ediacaran period

Science
Aug. 20 (UPI) -- New fossil analysis suggests the planet's earliest known animals emerged at least 571 million years ago. The new study -- published this month in the journal Paleontology -- proves members of the Ediacaran biota are indeed animals and were diversifying for several million years before the acceleration of speciation known as the Cambrian explosion. Scientists recovered the first Stromatoveris psygmoglena fossil in the mid-20th century. The frond-like sea creature baffled paleontologists for decades. Stromatoveris psygmoglena hails from the Cambrian period, but dozens of similar blob-like fossil imprints have been found among older strata -- rocks from the Ediacaran period, which lasted from 635 to 542 million years ago. Until now, scientists have struggled to understand t...
Inbred animals struggle to adapt to environmental changes

Inbred animals struggle to adapt to environmental changes

Science
June 29 (UPI) -- Inbreeding makes animals more vulnerable to environmental changes, new research shows. When scientists inbred beetles, they found the insects made poorer decisions as environmental factors changed. In the lab, researchers observed the behavior of dozens of female burying beetles as they reared their young on the carcass of a dead mouse. In the middle of the experiment, scientists altered the beetles' food source, swapping out the first mouse carcass for a second smaller mouse carcass. Beetles that were inbred failed to adapt, raising too many young despite the smaller food source. The control group, non-inbred beetles, culled portions of their larvae clutch, as the beetles do in the wild, ensuring all of their young are sufficiently fed. The offspring of inbred beetles w...
Gene-edited farm animals are on their way

Gene-edited farm animals are on their way

Science
Scientists have created pigs that are immune to one of the world's costliest livestock diseases.The team edited the animals' DNA to make them resist the deadly respiratory disease known as PRRS - a move that could prevent billions of pounds in losses each year.However, consumers have traditionally been reluctant to eat genetically altered animals and crops.This poses a significant barrier to farmers owning gene-edited pigs.And because genome, or gene, editing (GE) is relatively new, the absence of regulation currently prevents their sale anyway.GE is different to the more widely used technology of genetic modification. The former involves the precise alteration of an organism's DNA, while the latter is characterised by the introduction of foreign genetic ...
How many animals are born in the world every day?

How many animals are born in the world every day?

Science
Birds do it, bees do it, even educated fleas do it - well, maybe they don't fall in love but they do procreate, so can we estimate how many animals are born every day across the world? That was the question posed by a listener to the BBC's More or Less programme, a show which aims to make sense of the numbers that inform our lives.First things first, what do we mean by the term "animal"? The Oxford English Dictionary defines an animal as "a living organism which feeds on organic matter, typically having specialised sense organs and nervous system and able to respond rapidly to stimuli".So that's mammals and non-mammals, vertebrates and invertebrates, animals that hatch, and animals that have live births. ...