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Tag: "polyps" at biology news

Research Using Mouse Models Reveals A Novel Key Player In The Initiation Of Colon Cancer

...man colon cancers and develop tumor growths called polyps in their colons, eventually leading to death. Inactivating the APC gene was found, as in human cells, to cause the accumulation of a protein called beta-catenin in the nuclei of these cells. Kaestner's group had earlier published research on a trans...

Important discovery about second most fatal cancer

...ing in members of same family # Origin in serrated polyps (considered previously to be completely benign) C...eover, the colorectal cancers appear to develop in polyps that have been considered to be entirely harmless and have therefore been ignored up to now. These p...

Health of coral reefs detected from orbit

...biotic algae living in symbiosis with living coral polyps (and providing them their distinctive colours) are expelled. The whitening coral may die with subsequent impacts on the reef ecosystem, and thus fisheries, regional tourism and coastal protection. Coral bleaching is linked to sea temperatures above n...

Inflammation and drugs to control this activity studied in a variety of tumors sites

...enting the development of potentially precancerous polyps in the colon. Sarah Daugherty, research fellow at...ency of these variants was higher among those with polyps than among controls. The researchers also compared ibuprofen use among the two groups. Studies hav...

Corals switch skeleton material as seawater changes

...reted by generation after generation of tiny coral polyps over sometimes millions of years of coral growth in the same location. The team showed that corals can switch from using aragonite to another mineral, calcite, in making the calcium carbonate. They make that switch in response to decreases in the rat...

Report warns about carbon dioxide threats to marine life

... colorful microscopic algae that provide the coral polyps with food. Many calcifying organisms--including marine plankton such as pteropods, a planktonic marine snail--are affected by the chemistry changes. Shelled pteropods are an important food source for salmon, mackerel, herring, and cod. If calcifying...

Evolution reveals an independent route for diversity in animal form

...r animal species. Cnidarians include reef-building polyps and pelagic jellyfish, while the group from which ...anging in shape and size from microscopic solitary polyps to massive and highly differentiated colonial siphonophores up to 40 meters long. One clear implicat...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

...drain normally. Lane says that if left untreated, polyps can lead to severe blockage and recurring infectio...e monitored for a minimum of nine months to see if polyps and their resulting symptoms returned. Ten in the surgery group had their polyps return within six ...

HIV-1 kills immune cells in the gut that may never bounce back

...act translates into increased incidence of colonic polyps or colorectal cancer, routine monitoring practices will have to be re-examined, with HIV-positive patients receiving colonoscopies earlier and perhaps more frequently than current recommendations allow. In the laboratory, these findings should give r...

Ocean sampling yields environmental sources of coral symbionts

...r, it has remained unclear how newly settled coral polyps acquire their symbionts in the ocean. Organisms that resemble coral symbionts—dinoflagellates that are similar to those of the Symbiodinium genus that grow within corals—have been isolated from both sand and the water column; however, neither the loc...

Scientists identify a gene that may suppress colorectal cancer

... gene, the incidence of small intestinal and colon polyps were reduced by about 90%. “This gene may give us a novel target to aid in the diagnosis, prevention, and/or treatment of cancer,?says Dr. Arthur Buchberg, one of the co-senior authors on the report. The gene is called Atp5a1 , and encodes an es...

Healthy coral reefs hit hard by warmer temperatures

...ate secretions of each tiny coral, or polyp. While polyps provide the framework, coral's vivid hues come fro...nvironmental conditions strike a coral colony, the polyps expel their algae. This algae loss makes the coral appear pale. "We're left with a big question. ...

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