circulatory

Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin

...r, are hard matter, which could collect within the circulatory system, potentially causing a stroke. According to the Penn researchers, brightly emissive polymersomes define the first nanotech optical imaging platform based on non-aggregating "soft matter" (polymers and porphyrins) and hence have enormous potent...

NHGRI targets 12 more organisms for genome sequencing

...imilar to that of humans, a closed and pressurized circulatory system, and myelination of the nervous system. Understanding these systems of the skate at a genetic level will help scientists identify the minimum set of genes that create a nervous system or develop a jaw, possibly illustrating how these systems h...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

... ant species use for other purposes, and the basic circulatory system of all vascular plants," she says. A census of the rainforest from 2002 to 2004 revealed that devil's gardens grew by 0.7 percent per year. "Using this growth rate, we estimate that the largest devil's garden in our plot, with 351 plants, is ...

Chernobyl: The true scale of the accident

...s. A slight increase in solid cancers and possibly circulatory system diseases was noted, but needs to be evaluated further because of the possible indirect influence of such factors as smoking, alcohol, stress and unhealthy lifestyle. Have there been or will there be any inherited or reproductive effects? Bec...

From one cell, many possible cures

...iquid while also simulating the flow of the body's circulatory system. "Within the human body, each cell is no more than 200 micrometers from a source of nutrients," Ma explained. "The perfusion bioreactor allows us to deliver essential nutrients to stem cells in a manner very similar to what they are used to w...

Tastier tomatoes in the future?

...ngthen the immune system and can prevent heart and circulatory disease. Now, researchers from the Max Planck Institute of Molecular Plant Physiology, in co-operation with Israeli scientists, have identified DNA fragments in tomatoes that make their contents both healthy and tasty. The researchers crossed wild to...

Darkness unveils vital metabolic fuel switch between sugar and fat

...es. "5'-AMP is a pivotal metabolic signal whose circulatory level determines the balance of the peripheral organ energy supply between glucose, glycogen and fat," the authors conclude, raising the longer-term possibility of 5'-AMP-based therapies for obesity or type 2 diabetes. ...

Researchers reveal lung's unique innate immune system

...ere exchanges of gases between the respiratory and circulatory systems takes place ?are protected from invading microbes by the alveolar macrophage. Macrophages are white blood cells involved in the inflammatory response throughout the body, cells normally on the alert for invaders to kill. Alveolar macrophag...

A fisheye view of the deadliest breast cancer

... tumor-like aggregates and tapping into the fish’s circulatory system by inducing an angiogenic response. A separate fluorescent labeling allowed the researchers to simultaneously monitor the parental MDA cancer cells and the RhoC-overexpressing tumor cells in the context of the fish vasculature using high-r...

Molecules in blood foretell development of preeclampsia

...rmal blood pressure and blood flow to the mother's circulatory system might deprive the fetus of blood. ...

Lungs try to repair damaged elastic fibers

...xygen and carbon dioxide between the lungs and the circulatory system. A 2-year-old could do it Very young children who suffer lung injuries increase elastin expression and produce new elastic fibers inside the alveoli, Woods said. Adults do not have that ability and that has led physiologists to conclude ...

Researchers show that veins stiffen as we age

...rch office. While the arterial side of the human circulatory system has been studied extensively, Farquhar said...eart during the vital fluid's journey through your circulatory system. Every minute, the steady beating of that amazing living pump--your heart--sends about five...

Flavanols in cocoa may offer benefits to the brain

...g pool of nitric oxide, a critical molecule in the circulatory system that helps dilate blood vessels and keeps them pliable. Hollenberg fed flavanol-rich cocoa to healthy volunteers who were over age 50 and observed a “striking blood flow response?that evolved over several weeks. “Since this cocoa preparatio...

Cancer-killing invention also harvests stem cells

... significant amounts of cells of the lymphatic and circulatory systems, and potentially mesenchymal stem cells, which are unspecialized cells that form tissue, bone, and cartilage. Current procedures enable the specific capture of hematopoietic stem cells, which grow (or differentiate) over time into all of the...

A genetic 'gang of 4' drives spread of breast cancer

...ells deficient in the four genes directly into the circulatory system of mice. "When these cells reached the lung capillaries, they just got stuck there," said Massagué. "We concluded that metastatic cells use these same genes to loosen up cells in capillaries, so that the cells can penetrate the lung tissue to ...

Now, self-healing materials can mimic human skin, healing again and again

...nal microvascular networks that emulate biological circulatory systems. “In the same manner that a cut in the skin triggers blood flow to promote healing, a crack in these new materials will trigger the flow of healing agent to repair the damage,” said Nancy Sottos, a Willett Professor of materials science and ...