Capillaries in Medical News

Mathematics taking guesswork out of plastic surgery tissue transfer

... of oxygen in the tissue, which comes from tiny capillaries spaced just microns apart; the rate of exchange ... "The fact that there are thousands of capillaries makes it difficult to compute the oxygen levels, ... oxygen concentration in the capillaries, think of capillaries as being uniformly spread all over, and look at ...

Molecular Cause of Breast Cancer Metastasis Discovered

... architecture of the two tissues. Lung tissue is highly vascularized, yet capillaries present a relatively impenetrable barrier to metastasizing cells. Bone, on ... [cancer cells] have windows, because every day in the bone marrow, the capillaries have to let cells in and out." Similar molecular discriminators may ...

Toxic Mold May Pose Health Threat to Pets

... pets, Mader said. The toxin from the black mold causes a weakening of the capillaries in the lungs. When the capillaries are stressed, they burst and bleed. The cats died from complications ...

Growth factor TGF-B helps maintain health of retinal blood vessels

... might occur as a side effects." adds Tony Walshe, PhD, the first author of the study and a Postdoctoral Fellow in the D'Amore's laboratory team. capillaries are the smallest blood vessels in the body and the site at which oxygen and nutrients are transferred from the blood to the tissues. A capillary is ...

A new measure for the malignancy of melanoma

... a supply of nutrients and oxygen. Therefore, using special growth factors, it induces vascular wall cells of neighboring blood vessels to sprout new capillaries in order to get connected to the blood circulation. This process called angiogenesis involves a number of different growth factors and their ...

Technique may help stem cells generate solid organs, Stanford study shows

... hands apart and then touch your fingertips together. One wrist represents the inflow of blood, and the other, the outflow. The fingers are the tiny capillaries that supply oxygen and nutrients to the surrounding tissue wrapping itself invisibly around your hands. In many cases these beds create a flap of ...

New test may help to ensure that dengue vaccines do no harm

... treatment and fluids, but mortality can reach 15 percent when undiagnosed. DSS comes when the infection has caused so much fluid to leak out of capillaries that there is not enough blood to supply organs. As of 2008, there were no antiviral drugs designed to treat dengue and no drug candidates in ...

GEN Reports on Strategies to Overcome Blood-Brain Barrier

... and low-density lipoprotein (LDL). In RMT, molecules in the circulation may bind to specific receptors on the luminal surface of brain capillaries (i.e., the surface that interfaces with the bloodstream). Upon binding, the receptor-ligand complex is internalized into the endothelial cell by a ...

Employees Have Yet Another Reason To Lose Their Office Chairs In Favor Of A Treadmill Desk: Their Brain

... that walking prompts the body's production of a variety of beneficial elements including increased production of blood vessels (angiogenesis) and capillaries that assist in muscle growth and retention, brain function and overall health efficiencies. Further studies have shown that sufficient amounts of ...

Gladstone scientists identify single microRNA that controls blood vessel development

... UCSF have identified a key regulatory factor that controls development of the human vascular system, the extensive network of arteries, veins, and capillaries that allow blood to reach all tissues and organs. The research, published in the latest issue of Developmental Cell, may offer clues to potential ...

Pulmo BioTech Inc. Announces Possibility of MRI Application for PulmoBind

... and Lung Inflammatory conditions. The way in which this will be achieved is to tag a molecule which preferentially bonds to the inner walls of the capillaries in the lungs with a gamma emitting radionuclide so that the position of the molecules can be seen using a standard Gamma Camera, which is available ...

Scientists find how neural activity spurs blood flow in the brain

... Murthy says. "We measured all this using sophisticated optical microscopy, actually counting the number and rate of red blood cells passing through capillaries in the area. In addition to showing directly that astrocytes are involved in neurovascular coupling, we discovered that there are multiple molecular ...

Study shows pine bark naturally reduces cardiovascular risk factors in diabetics

... in patients with type II diabetes. And, earlier studies with more than 1,000 diabetes patients, showed that Pycnogenol has the ability to seal leaky capillaries in the eye. This capability stops the progression of vision loss in patients suffering from diabetic retinopathy, a diabetes-induced eye disease ...

Study Shows Pine Bark Naturally Reduces Cardiovascular Risk Factors in Diabetics

... patients with type II diabetes. And, earlier studies with more than 1,000 diabetes patients, showed that Pycnogenol(R) has the ability to seal leaky capillaries in the eye. This capability stops the progression of vision loss in patients suffering from diabetic retinopathy, a diabetes-induced eye disease that ...

Researchers learn how signaling molecule orchestrates breast cancer's spread

... of the cancer to spread to the lungs through the blood circulation. The results show that the breast cancer cells use ANGPTL4 to break down the thin capillaries of the lung, thus facilitating their escape into the lung tissue. "Our work shows that TGF-a enhances human breast cancer metastasis and reveals ...

Human breast tumors' 'microenvironment' primes them for metastasis

... angiopoietin-like 4 (ANGPTL4). Once those cells escape the tumor and lodge in the lungs, ANGPTL4 disrupts the connections between cells in the thin capillaries there. That separation of cell-cell contacts allows the cancer cells to cross the vessel wall and pass into the lung proper, Massague said. The ...

JCI online early table of contents: Jan. 2, 2008

... 2040% go on to develop end-stage kidney disease. The disease is characterized by the accumulation of immune complexes in small clusters of capillaries in the kidneys known as glomeruli. The antibodies in these immune complexes are IgA1 molecules whose sugar coatings have not been formed correctly ...

JCI table of contents: Dec. 20, 2007

... and their typical structure was severely disrupted. Furthermore, overexpression of RAMP2 in endothelial cells enhanced their ability to form blood capillaries in vitro. The authors therefore concluded that, RAMP2 is a key determinant of the effects of AM on the vasculature and is essential for angiogenesis ...

Regular Exercise Helps Fight Heart Failure

... progenitor cells increased 47 percent, progenitor cells beginning to mature into endothelial cells increased almost 200 percent, and the density of capillaries in skeletal tissue increased 17 percent. There were no changes in the control group. When they began, the exercising patients had peak oxygen ...

Studies Probe Weaknesses in Donated Blood

... a molecular rationale for these observations. Not only can NO-depleted, stored red blood cells not open blood vessels, they may actually block capillaries in already oxygen-starved tissues, exacerbating tissue damage. Furthermore, donated blood cells may act as a "sink" to soak up NO, thereby causing ...

California Company Slings Mud for Breast Cancer Awareness

... mani/pedi/scalp package," comments Ms. Tam Nguyen, the company's VP-Operations. "The naturally rich magnesium content in SCALP helps to dilate capillaries in the scalp, thereby sending more blood to the hair roots -- we call it essentially 'irrigating and fertilizing the crop.' Every one of Awakening's ...

How adhesive protein causes malaria

... the malaria bacteria Plasmodium falciparium infects the red blood cells, which then accumulate in large amounts, blocking the flow of blood in the capillaries of the brain and other organs. The reason that the blood cells conglomerate and lodge in the blood vessels is that once in the blood cell the ...

Researchers Develop Material That Self Heals Like Human Skin

... a crack formed in the coating. According to Sottos, the crack propagated through the coating until it encountered one of the fluid-filled capillaries at the interface of the coating and substrate. Healing agent moved from the capillary into the crack, where it interacted with catalyst particles, ...

Bottleneck in Blood Supply Makes Brain Vulnerable to Strokes

... arterioles are a bottleneck in the blood supply to gray matter. “In this study, we took advantage of being able to see into individual capillaries in brain tissue,” explained Nozomi Nishimura, who was a graduate student working with Kleinfeld in physics at the time of the study. “It is the ...

Chronic Kidney Disease Related To Mutant Gene

... main blood filtration unit. There are about one million of these filtration units in each human kidney. As blood flows through a network of tiny capillaries in the glomerulus, excess water, salts and toxic molecules are removed and flushed out in urine, while important blood proteins like albumin are ...

Simple eye test can detect severe malaria

... malaria in children, according to a new study.// Cerebral malaria, a severe complication where the Plasmodium falciparum parasite infects capillaries that flow through the tissues of the brain, is difficult to detect as patients can be unconscious and have a number of other illnesses. The ...

New Malaria Treatment

... caused when the malaria bacteria P.falciparium infects the red blood cells, which then accumulate in large amounts, blocking the flow of blood in the capillaries of the brain and other organs. The reason that the blood cells conglomerate and lodge in the blood vessels is that once in the blood cell the ...

Existing Brain Cooling Not Beneficial To Trauma Patients

... polystyrene labeled with radioactive isotopes, to assess blood flow. He injected the microspheres, which were just large enough to get stuck in the capillaries of the brain, into the rat's hearts. He then counted the number of microspheres in key brain regions to assess blood flow. By matching a ...

Current Cooling Devices Ineffective in Preventing Brain Injury

... polystyrene labeled with radioactive isotopes, to assess blood flow. He injected the microspheres, which were just large enough to get stuck in the capillaries of the brain, into the rat's hearts. He then counted the number of microspheres in key brain regions to assess blood flow. By matching a ...

Vascular Disease 101: Discovering and Treating Common Diseases of the Veins

... When the body's arteries, veins and capillaries become diseased, patients can experience pain and discomfort, not to mention the possibility of stroke and heart attack.// Dennis Gable, M.D., a ...

Repeated Heart Surgery with Older Blood Transfusion Pack More Death Risk

... an immune response in its recipient and red blood cells become stiffer over time, which could affect their ability to fit into or move through capillaries and deliver oxygen, he added. Source: ...

Exercise Combined with Dialysis Yields Better Results

... minutes in each of the first two hours of dialysis. Blood flow through the tissue is increased when exercise using lower extremity muscles allows capillaries to open up more to provide a greater surface area for exchange of substances from tissue to blood, researchers say. The increased blood flow moves ...

Gene Therapy Overcomes Heart Failure In Muscular Dystrophy

... characteristics of the muscle itself, 'Previous attempts at systemic gene therapy for muscle have not been very effective because blood vessel capillaries act much like a mosquito net, blocking the gene drugs from reaching the muscle cells. Fortunately, we found a virus that is just small and sneaky ...

Lipoma Arborescens: A Rare Tumor Of The Knee

... mature adipose tissue, which displaces most of the connective tissue around the knee to a layer of synovial cells. Enlarged or congested hyperaemic capillaries may be present. High power histological sections show large adipocytes and few other features. The overlying synovial cells may appear enlarged and ...

Scientists Unveil Mechanism Behind Resistance to Severe Malaria

... distributed evenly over the surface of an infected AA red blood cell, they act like grappling hooks, allowing the parasitized cells to stick in tiny capillaries and avoid being cleared from the bloodstream. When parasite-infected red blood cells stick to blood vessel walls, the resulting inflammation may ...

Gene therapy - Aim to improve blood flow

... of activity of a gene called HIF-1. Researchers have managed to produce a genetically-altered mouse which has grown large numbers of new blood capillaries in its skin. This gene is known to send commands to several other genes, including one which produces a growth factor important in the formation of ...

Gene therapy - Aim to improve blood flow

... of activity of a gene called HIF-1. Researchers have managed to produce a genetically-altered mouse which has grown large numbers of new blood capillaries in its skin. This gene is known to send commands to several other genes, including one which produces a growth factor important in the formation of ...

A new growth factor identified

... have also sought to fight cancer by blocking VEGF's action. Unlike VEGF, the researchers also found that EG-VEGF only acts on cells that line the capillaries of the endocrine glands. According to Dr.Napoleone Ferrara, one of the study authors, they believe that EG-VEGF was implicated in the ...