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Tag: "organs" at biology news

Bioartificial kidney under study at MCG

...ization that provides researchers with tissues and organs anatomically unsuitable for transplant. The cells are grown into the walls of thousands of hollow fibers contained in a cartridge similar to those used for traditional dialysis. With dialysis, a patient's blood runs through the fibers and a solutio...

Spleen may be source of versatile stem cells

...e bone marrow, but potentially toform such diverse organs as the small intestine, uterus, vascularsystem and lung. They theorize that a pocket of these uncommitted cellsmight remain in the spleen though adulthood. In addition toregeneration of islets, these cells might also produce bone cells -suggested by ...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...corporated into cells lining thestomach and colon, organs where consumption of red meat has beenassociated with risk of cancer."Knowing the mechanism that this molecule uses to get into human cellsmay give us clues to possible solutions to the problems that it maycause in various situations," Varki said....

Newly-discovered class of genes determines ?and restricts ?stem cell fate

...vast majority of differentiated cells that make up organs where cancers are found. If this theory is correct...t stem cells have been identified in many types of organs and may be a potential reservoir for tissue regeneration. A fundamental understanding of the molecul...

Newly discovered virus linked to childhood lung disorders and Kawasaki disease

... immune response inthe respiratory tract and other organs in acute cases of Kawasakidisease, suggesting the involvement of a specific microbe, which mayenter the body through the respiratory tract; finally, as the emergenceof SARS illustrates, coronaviruses "are capable of enormously variedpathogenicity." D...

Bacteria collection sheds light on urinary tract infections

...umans and animals. Thousands of E.coli live in the organs of humans and animals and provide multiple benefits such as aiding in digestion of certain nutrients. However, E.coli is also commonly associated with illnesses caused by eating undercooked beef or drinking contaminated water. Without access to the ...

“Nano-scissors?laser shows precise surgical capability

...ity to cut organelles(parts of cells—they are what organs are to organisms) precisely,without damaging surrounding tissue. Usually, conventional lasers usedin surgery heat the area to be cut, then cut it, but this heightens therisk for tissue damage.Ben-Yakar’s nanosurgery technique used a series of low-ene...

Sea skate experiment sheds light on human cell transport

...human kidney, the findings shed light on how these organs cope with excess water. But Goldstein and Musch also believe the mechanisms that trigger this cellular "release valve" are universal. "We think that vesicle insertion, coupled with phosphorylation, is a broad mechanism for getting substances in and ...

Plant hemoglobins: Oxygen handlers critical for nitrogen fixation

...umulate in root nodules and give these specialized organs their distinctive red color. Legume root nodules accommodate bacteria, called rhizobia, that reduce atmospheric nitrogen to ammonia, which is subsequently used by the plant for growth and colonization of nitrogen-poor soils. Symbiotic nitrogen fixati...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

...-by-molecule procedure involved in the assembly of organs and tissues, like brains and muscles, into a complex living organism. HOX genes are also vital for understanding the way that people get certain cancers. "Many of the proteins that regulate these genes can suppress or enhance tumor growth," Bernstei...

Tiny scaffolding allows stem cells to become working fat cells

...g. "There is a serious shortage of transplantable organs available for thousands of patients nationally," Kniss said. "One ultimate goal of this work might be creating new tissue that could serve either as a temporary substitute while waiting for a donor organ, or even providing a replacement organ." Alon...

Surprising findings reported about iron overload

...rogressive accumulation of iron deposits in target organs that may result in complications such as cirrhosis of the liver, liver cancer, arthritis, diabetes, impotence and heart failure. "The finding that Asians and Pacific Islanders have high levels of iron in the blood is surprising because they also hav...

World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics

...expectation is that these islets from near-perfect organs will work better, although it's too early to tell," he says. The recipients use the same drugs to prevent organ rejection as are used in the Edmonton Protocol. Dr. Shapiro was invited to participate in the operation in Kyoto, Japan, where he origin...

Hirsute Or Hairless? Two Proteins May Spell The Difference

...ing this question—specifically, how structures and organs develop from buds. In a new study, Elaine Fuchs and colleagues use a three-pronged approach—involving gene expression analysis, transgenic mice, and cell cultures—to study how epithelial buds, the precursors of hair follicles, form. Their experiments...

Programmable cells: Engineer turns bacteria into living computers

...ct hazards, build structures or repair tissues and organs within the body. "We are really moving beyond the ability to program individual cells to programming a large collection -- millions or billions -- of cells to do interesting things," said Ron Weiss, an assistant professor of electrical engineering a...

Heart repair gets new muscle

Some organs in the human body deal with injury better than others. A flesh wound or muscle tear might hurt, but, assuming you are otherwise healthy, both will heal. The prognosis for a heart attack, on the other hand, is not so clear-cut. It has long been thoug...

Buying Time Through Hibernation on Demand

...injury and death from insufficient blood supply to organs and tissues. "We are, in essence, temporarily con...activity also might extend the amount of time that organs and tissues could be preserved outside the body prior to transplantation, Roth said. Yet another pot...

U-M team recovers ancient whale in Egyptian desert

...injury and death from insufficient blood supply to organs and tissues. "We are, in essence, temporarily con...activity also might extend the amount of time that organs and tissues could be preserved outside the body prior to transplantation, Roth said. Yet another pot...

PET/CT can identify new cancer lesions at early stage, allowing for prompt treatment

...tes a detailed view of the anatomy or structure of organs and tissues in the body. Combining PET with CT provides images showing function (PET) and anatomy (CT) and a merged or "fused" picture of the body's metabolism and structure. ...

New tumor-suppressor gene discovered

...and found that they developed large tumors in many organs including the head, eye, wing, leg, and antenna. He also generated another mutant form of the mats gene--this time with a huge missing pie ce of genetic material caused by another transposable element jumping out and dragging lots of material along w...

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