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Tag: "smooth" at biology news

Stanford doctors advance in bid to turn mice stem cells into blood vessels

... the conditions that will make the stem cells into smooth muscle cells (myocytes), endothelial cells and fibroblasts, which make up the three layers of a blood vessel. The idea is if we can optimize our yield we can more easily obtain the large number of specific cells required to make a blood vessel." ...

Beekeepers work hard for the honey, despite changing tupelo forest

... It's tupelo honey, a honey so distinct, light and smooth that people describe it as they would a fine wine. But the future of tupelo honey production may not be so sweet. Florida State University geography Professor J. Anthony Stallins and doctoral student Kelly Watson are studying factors that could aff...

Green tea and the 'Asian Paradox'

...ipids, and promotes proliferation and migration of smooth muscle cells, which are all factors in reducing cardiovascular disease, he said. Sumpio said other reports show that EGCG prevents growth of certain tumors. Tea, according to studies, also can improve gastrointestinal function, alcohol metabolism, ...

Increased sensitivity to nerve signals keeps diabetes at bay

...ith problematic side effects--for example, causing smooth muscles to contract. One of three branches of the involuntary nervous system, the parasympathetic, or "rest and digest" system fulfills many roles--slowing the heart rate, dilating blood vessels, and stimulating digestive secretions. Food intake is...

Study of gene transfer for erectile dysfunction shows promise

...proach to treating ED and other diseases involving smooth muscle cells." The results of the study, which ... of particular proteins. These proteins help relax smooth muscle cells, the type of muscle found in the penis as well as in hollow organs such as the bladder....

How blood flow dictates gene expression

...ion from the vessel lining, or endothelium, to the smooth muscles, which never sees a blood cell," says seni...h either activates or represses genes that control smooth muscle tone, that is the caliber of the vessel. (Tone is governed by how much a muscle contracts or ...

Getting to the heart of the heart

...onductive tissue of the heart, and to the vascular smooth muscle cells that line the heart's blood vessels. ...ht-sided heart chambers, forming myocardial cells, smooth muscle cells, and endothelial cells. Since these different cell types were thought to have separat...

Therapeutic role found for carbon monoxide

... -- are made up primarily of endothelial cells and smooth muscle cells. PAH develops when, for unknown reasons, the smooth muscle cells rapidly and uncontrollably proliferate, leading to "remodeling," in which blood vessel ...

Scientists find new way to manipulate DNA

...eaking. Those experiments measured only laminar or smooth flow, which is turbulent free. Yet, during their own experiments, the U-M team discovered that flow turbulence did indeed exist and that it was impacting the polymer quite a bit. Through experiments that accounted for turbulent flow, Solomon and ...

Stem cells found in adult hair follicles may provide alternative to embryonic stem cells

...rvous systems along with endocrine cells, bone and smooth muscle cells. The cells can be isolated from the hair follicle bulge as multipotent stem cells, and then expanded in culture into millions of cells without losing stem cell markers. "We grafted the cells into mice that have spinal cord injuries an...

Math model predicts cancer behavior

...l types co-exist and the tumor shape is round with smooth edges, characteristic of a non-invasive tumor. Under harsh environmental conditions ?imagine a desert ?the most aggressive cell types dominate and the tumor shape has fingering, invasive projections. By changing a single condition ?oxygen concentra...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...declined by more than 97 percent; bull, dusky, and smooth hammerhead sharks by more than 99 percent. "Large sharks have been functionally eliminated from the east coast of the U.S., meaning that they can no longer perform their ecosystem role as top predators," says Baum. "The extent of the declines sho...

Groundbreaking Canadian asthma study

...vasive procedure that reduces the amount of airway smooth muscle that is responsible for the constriction of...ncy/thermal energy and reduces areas of underlying smooth muscle in the airways. The procedure is completed in three treatment sessions, each lasting less tha...

Fish growth changes enhanced by climate change

...d morwong, redfish, Jackass Morwong, Spiky, black, smooth and Warty Oreo and Orange roughy. Because of the pervasive effect of temperature on the physiology and growth of marine animals, it was likely that similar effects would be seen in many other species. The science team examined 555 specimens ran...

Ultrathin films deliver DNA as possible gene therapy tool

... to deliver genes that could prevent the growth of smooth muscle tissue into the stents, a process which can re-clog arteries, or that could treat the underlying causes of cardiovascular disease. Preliminary laboratory tests of the DNA-coated materials are promising. "The films survive basic mechanical...

Tiny clue reveals new path toward heart disease

...migration of cells from one spot to another within smooth muscle. According to the researchers, the newly identified SNP may change the level of this protein in blood vessels, causing cells to congregate in one spot and form a plaque in the vessels to the heart. In addition to identifying the genetic var...

Nanotechnology shows promise as next wrinkle fighter

...imally small nanoparticles ?50nm ?between films to smooth out the tiny buckles that are the origin of wrinkl...sporting vitamins and other compounds to plump and smooth tissue. But Ilsoon envisions thin films that can be injected beneath the thinning outer layer of the...

Study examines risk of soft tissue sarcomas in hereditary retinoblastoma survivors

...ost common subtype was leiomyosarcoma, a cancer of smooth muscle cells that was diagnosed in 23 of the patients. Other frequently diagnosed sarcomas were fibrosarcoma (13 patients), malignant fibrous histiocytoma (12), rhabdomyosarcoma (8), and liposarcoma (3). The authors calculated that there was a 184-fo...

Enhancing activity of marijuana-like chemicals in brain helps treat

...e, in which a person loses the ability to execute smooth motions, progressing to muscle rigidity, tremors and sometimes complete loss of movement. The condition affects 1.5 million Americans, according to the National Parkinson Foundation. "It turns out that the striatum is much more complicated than ...

Woven scaffolds could improve cartilage repair

...ines the ends of bones, providing cushioning and a smooth surface for their movement within the joint. Damage to cartilage is difficult to treat, the researchers said, because the tissue lacks a supply of blood, nerve and lymph and has limited capacity for repair. Current strategies for treating cartilag...

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