adplus-dvertising
Connect with us

Science

Canadian researchers diagnose cancer in a dinosaur for 1st time – Global News

Published

 on


It’s a diagnosis that took 75 million years.

Canadian researchers who included specialists from surgeons to paleontologists have identified what they say is the first known cancer in a dinosaur. The conclusion not only sheds light on the history of what is still one of humanity’s most feared diseases, but also hints at how the ancient lizards may have lived with — and protected — each other.

Read more:
Rare dinosaur stomach fossil unearthed at Alberta oilsands site opens door to ancient world

“Dinosaurs might seem like these mythical creatures, larger than life and powerful,” said the Royal Ontario Museum’s David Evans, one of the co-authors of a paper on the finding published in The Lancet.

“But they were living, breathing animals that were afflicted with some of the same injuries and diseases that we see in animals and humans today.”

Story continues below advertisement

The Centrosaur fossil was originally collected in the 1970s from a bone bed in Alberta’s badlands. The area has provided hundreds of samples of the horned dinosaur.


Canadian researchers who included specialists from surgeons to paleontologists have identified what they say is the first known cancer in a dinosaur. A cast of a cancerous dinosaur fossil is shown in a handout photo.


THE CANADIAN PRESS/HO-Georgia Kirkos, McMaster University

Paleontologists originally assumed a growth on a leg bone was evidence of a break. That’s where it stayed until a chance conversation between Evans and Mark Crowther, chairman of McMaster University’s medical faculty and a dinosaur enthusiast.

The two got talking about evidence of dino diseases. That led to an expedition to Alberta’s Royal Tyrrell Museum, which has hundreds of fossils that show signs of injury.

The team eventually focused its attention on one fossilized leg bone.

It was examined by cancer specialists, subjected to microscopic analysis and a high-resolution CT X-ray scan.

Story continues below advertisement






1:54
Canadian tyrannosaur “reaper of death” discovered in Alberta


Canadian tyrannosaur “reaper of death” discovered in Alberta

“This is a bone-forming lesion — it’s laying down bone,” said co-author Seper Ekhtiari, an orthopedic surgery resident at McMaster.

“(That) eliminated infection right away because infection doesn’t form new bone.”

It wasn’t a repaired break either. New bone around fractures forms in predictable layers.

“The bone is very disorganized and doesn’t have any clear pattern,” Ekhtiari said.

The growth extended all the way down the bone, which a fracture scar wouldn’t do. Holes in the fossil suggested large, disorderly blood vessels, which cancerous tissues are known to develop.

Finally, the fossil was compared to a human leg bone with bone cancer.






3:09
New species of dinosaur found in B.C.


New species of dinosaur found in B.C.

“It’s striking how similar the microscope slides are,” said Ekhtiari.

Story continues below advertisement

The conclusion? Osteosarcoma, a cancer that still afflicts more than three out of every million humans today.

Ekhtiari said the dinosaur was very sick.

“A tumour that had extended this far in a human would almost certainly have metastasized elsewhere. It’s very likely the individual would have been in pain.”

Ekhtiari found himself feeling for his ancient patient.

“We all share a similar body plan and we all share a common ancestor. This would have been a gentle herbivorous animal trying to keep up with the herd.”

And yet, cancer didn’t kill it. Nor did a hungry meat-eating dinosaur preying on the slow and the weak.

Because the fossil was found with so many others, Evans is confident the sick dino died with large numbers of its fellows in a natural event such as a flood, which raises an intriguing possibility.

“We know these dinosaurs were highly social,” he said. “Many horned dinosaurs lived in big herds. They were often living with members of their extended family.

“There’s a benefit to living with those groups. It wouldn’t be surprising to me that the herd would have protected these sick and weak and lame individuals.

Story continues below advertisement

“It would be completely speculative,” Evans said. “But it wouldn’t be impossible.”

© 2020 The Canadian Press

Let’s block ads! (Why?)

728x90x4

Source link

Continue Reading

Science

The body of a Ugandan Olympic athlete who was set on fire by her partner is received by family

Published

 on

 

NAIROBI, Kenya (AP) — The body of Ugandan Olympic athlete Rebecca Cheptegei — who died after being set on fire by her partner in Kenya — was received Friday by family and anti-femicide crusaders, ahead of her burial a day later.

Cheptegei’s family met with dozens of activists Friday who had marched to the Moi Teaching and Referral Hospital’s morgue in the western city of Eldoret while chanting anti-femicide slogans.

She is the fourth female athlete to have been killed by her partner in Kenya in yet another case of gender-based violence in recent years.

Viola Cheptoo, the founder of Tirop Angels – an organization that was formed in honor of athlete Agnes Tirop, who was stabbed to death in 2021, said stakeholders need to ensure this is the last death of an athlete due to gender-based violence.

“We are here to say that enough is enough, we are tired of burying our sisters due to GBV,” she said.

It was a somber mood at the morgue as athletes and family members viewed Cheptegei’s body which sustained 80% of burns after she was doused with gasoline by her partner Dickson Ndiema. Ndiema sustained 30% burns on his body and later succumbed.

Ndiema and Cheptegei were said to have quarreled over a piece of land that the athlete bought in Kenya, according to a report filed by the local chief.

Cheptegei competed in the women’s marathon at the Paris Olympics less than a month before the attack. She finished in 44th place.

Cheptegei’s father, Joseph, said that the body will make a brief stop at their home in the Endebess area before proceeding to Bukwo in eastern Uganda for a night vigil and burial on Saturday.

“We are in the final part of giving my daughter the last respect,” a visibly distraught Joseph said.

He told reporters last week that Ndiema was stalking and threatening Cheptegei and the family had informed police.

Kenya’s high rates of violence against women have prompted marches by ordinary citizens in towns and cities this year.

Four in 10 women or an estimated 41% of dating or married Kenyan women have experienced physical or sexual violence perpetrated by their current or most recent partner, according to the Kenya Demographic and Health Survey 2022.

The Canadian Press. All rights reserved.

Source link

Continue Reading

News

The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

Published

 on

 

TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

Source link

Continue Reading

News

B.C. sets up a panel on bear deaths, will review conservation officer training

Published

 on

 

VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

The Canadian Press. All rights reserved.

Source link

Continue Reading

Trending