The Shroud of Turin is a famous artifact with obscure origins. How and when it was made has long been the subject of debate among many scientists, historians and religious leaders, alike. The two most prominent theories are that it was either created as a work of art during the medieval period or that it was a piece of linen that was actually wrapped around the body of Jesus Christ after his death over 2000 years ago.
Radiocarbon dating done in a 1989 study on the Shroud of Turin dated it around 1,260 to 1,390 AD, consistent with the medieval theory. Later, in 2005, Raymond Rogers argued that the tested sample from the radiocarbon dating came from an area that had been repaired, and was thus newer than the original cloth. And more recently, in 2022, a single thread from the shroud material was tested with a new—and somewhat controversial—method based on Wide Angle X-ray Scattering (WAXS), which claimed that the shroud dated back to the first century AD. If those results are reliable, this dates the cloth much closer to the time of Jesus.
Yet another study examined the blood patterns on the shroud and deemed them inconsistent with what would be expected with a deceased man lying flat. In fact, the authors stated that these blood patterns were “totally unrealistic.” This led to the idea that the blood might have been added to the shroud in a more artistic manner after its creation.
Plastic pollution is a “grave, growing and under-recognized danger” to health that is costing the world at least $1.5 trillion a year, experts warned in a report on Monday.
The new review of the existing evidence, which was carried out by leading health researchers and doctors, was published one day ahead of fresh talks opening in Geneva aiming to seal the world’s first treaty on plastic pollution.
“Plastics cause disease and death from infancy to old age and are responsible for health-related economic losses exceeding US$1.5 trillion annually,” said the review in The Lancet medical journal.
The US Food and Drug Administration has approved a new system for nerve repair based on light-activated polymers rather than surgical stitches. The flexible polymer system was developed by the medical technology company Tissium, which was founded over a decade ago to commercialize research from the laboratories of Jeffrey M. Karp and Bob Langer at the Massachusetts Institute of Technology.
Approval is the first for firm Tissium, which was founded over a decade ago by Laura Howes.
Lose an adult tooth, and you’re left with limited options that typically involve titanium implants or plastic dentures. But scientists are working on an alternative: lab-grown human teeth that could one day replace damaged ones.
Pamela Yelick and Weibo Zhang at Tufts University School of Dental Medicine in Boston have grown a mixture of pig and human tooth cells in pieces of pig teeth to create bioengineered structures that resemble real human teeth.
The toothlike structures represent a step toward bioengineered replacements for dental implants, say researchers behind the work.
About one quarter of patients with muscle-invasive bladder cancer (MIBC) may be treated and derive a benefit with the current standard chemotherapy. To better understand why some tumors resist chemotherapy and identify better ways to treat those cancers, researchers at Baylor College of Medicine have conducted a detailed molecular analysis of MIBC tumors. The results, published in Cell Reports Medicine, offer potential new ways to identify which patients will benefit from chemotherapy and reveal possible new treatment strategies.
“One of our goals was to identify molecular markers in patient tumors that would help us predict which patients were most likely to benefit from chemotherapy and which ones might not,” said first co-author, Dr. Matthew V. Holt, director of the Lester and Sue Smith Breast Center Proteomics Laboratory at Baylor.
The researchers studied 60 MIBC tumor samples using a comprehensive multi-omics approach which included genomics (sequencing the genes of the tumor), transcriptomics (analyzing which genes are turned on or off), proteomics (the proteins produced by the tumor) and phosphoproteins (proteins with chemical tags that control their activity).
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Scientists have found a way to supercharge lung cancer treatment by transplanting healthy mitochondria into tumors, which both boosts immune response and makes chemotherapy far more effective. By combining this novel method with cisplatin, researchers reversed harmful tumor metabolism and empowered immune cells to fight back, all without added toxicity.