Skip to main content

Home/ RIS IB Biology/ Group items tagged Traditional

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
wasin kusakabe

Deep sequencing reveals potentially toxic, trade-restricted ingredients in some traditi... - 1 views

www.sciencedaily.com/...120412182328.htm

DNA sequencing Toxic Traditional Chinese Medicine

shared by wasin kusakabe on 15 Apr 12 - No Cached
  • DNA sequencing technology to reveal the animal and plant composition
  • of traditional Chinese medicines
  • These plants contain chemicals that can be toxic if the wrong dosage is taken, but none of them actually listed concentrations on the packaging.”
  • ...5 more annotations...
  • estricted animals that are classified as vulnerable, endangered, or critically endangered, including the Asiatic black bear and Saiga antelope.”
  • including animal DNA and potential allergens such as soy or nuts.
  • mislabelling of TCMs
  • multiple samples that contained DNA from animals listed as trade-restricted
    • wasin kusakabe
      wasin kusakabe on 15 Apr 12
       
      Traditional Chinese Medicines have incorrect labeling, which may lead to allergic reaction or crossing religious restrictions.
  • wasin kusakabe on 15 Apr 12
     
    Traditional Chinese Medicines' ingredients revealed by DNA sequencing to be potentially toxic.
Nickyz P.

GEN | Magazine Articles: Firm Focuses Operations on Gene Silencing - 0 views

www.genengnews.com/...4004

shared by Nickyz P. on 16 Apr 12 - No Cached
  • It is developing therapeutics to prove the validity of ddRNAi in treating cancer, infectious diseases, and disorders of the central nervous system.
  • The ddRNAi platform focuses on the long-term downregulation of genes, making it suitable for targeting chronic life-threatening diseases. “We are silencing genes instead of introducing new genes, which separates us from traditional gene therapy companies,” Dr. French asserts.
  • “This targeted treatment markedly enhanced the benefits of radiation therapy in both cellular and tumor models,” the researchers concluded. Other radiotherapy-resistant tumors may benefit from the shRNAs created for the prostate cancer study.
nidthamsirisup

Mysterious Noncoding DNA: 'Junk' or Genetic Power Player? | PBS NewsHour - 0 views

www.pbs.org/...junk-dna.html

noncoding DNA gene

shared by nidthamsirisup on 15 Apr 12 - No Cached
  • Genes represent only a tiny fraction -- 1 percent -- of our overall genetic material. Then there's the other 99 percent of our DNA -- the stuff that doesn't make protein
  • Researchers have found that some of this noncoding DNA is in fact essential to how our genes function and plays a role in how we look, how we act and the diseases that afflict us.
  • Embedded in this 99 percent is DNA responsible for the mechanics of gene behavior: regulatory DNA. Greg Wray of Duke University's Institute for Genome Sciences and Policy describes the regulatory DNA as the software for our genes, a set of instructions that tells the genome how to use the traditional coding genes.
  • ...5 more annotations...
  • "It's like a recipe book," Wray said. "It tells you how to make the meal. You need to know the amounts. You need to know the order. The noncoding DNA tells you how much to make, when to make it and under what circumstances."
  • common diseases are probably more influenced by regulatory differences, Harismendy said. These include Type 2 diabetes, Crohn's disease, Alzheimer's Disease and a variety of cancers, including breast, colon, ovarian, prostate and lung.
  • According to Wray, research has shown that diseases like bipolar syndrome and clinical depression may be associated with noncoding mutations that determine whether the brain is producing too much or not enough of a particular neurotransmitter. One noncoding mutation gives a person almost complete protection against the nasty malaria parasite, plasmodium vivax.
  • Another piece of noncoding DNA regulates the enzyme responsible for lactose tolerance, the ability to digest milk. Research by Wray and other scientists has shown that in four populations where dairy consumption is a vital part of the diet, new mutations have appeared that essentially keep the gene that produces the lactase enzyme from switching off.
  • And recent research done by evolutionary biologists suggests that differences in regulatory DNA may represent a major part of what separates us from chimpanzees.
1 - 3 of 3
Showing 20▼ items per page