Tag: "membranes" at medical news

Novel delivery system devised for toxoplasmosis treatment

...iclosan, could cross multiple animal and microbial membranes to enter the host cell, pass through its internal barriers, enter cysts, which consist of densely packed animal and parasite constituents, enter the parasite, cross into the specialized organelles within, then release the triclosan, which inhibited t...

Ultrasound-guided liposomes boost imaging, target drug/gene therapy

...s enables liposomes to merge readily with cellular membranes and release molecules into cells. Collaborating with McPherson on the ultrasound/liposome research are Christy Holland, University of Cincinnati; and Shao-Ling Huang, Bonnie J. Kane, Robert C. McDonald, Ashwin Nagaraj, Sanford I. Roth and Susan D...

Study moves in on why astronauts suffer bone loss

...ered by a loss of integrins, proteins found in the membranes of bone cells that enable these cells to sense mechanical changes in their immediate environment. These integrins are also known to regulate the action of growth factors in other cells. The study appears in the March issue of the Journal of Bone and...

Study reports improved method to identify fetal DNA in maternal blood samples

...ased by using formaldehyde to stabilize blood cell membranes and reduce the number of the mother's blood cells that are destroyed during sample collection, handling, and processing, which reduces the amount of maternal DNA released, thereby increasing the percentage of fetal DNA. The study was conducted in t...

American Thoracic Society Journal news tips for March 2004

...egulates chloride and sodium transport across cell membranes causes problems, leading to dehydration and the production of very sticky secretions. In CF, the mucus-producing glands of the lung produce thick, abnormal secretions that clog the airways, damage the lungs, and form an environment in which bacteria...

Making smart drugs that deliver the right kind of punch

...es---to spy on interactions between dendrimers and membranes similar to those that surround living cells. The a... saw was that "certain kinds of dendrimers disrupt membranes by literally punching holes in them." That wasn't the kind of punch the researchers wanted to deliv...

Day-care services could be option for pregnancy complications

...tients with preterm premature rupture of the fetal membranes can fail to manifest signs of sepsis until it is overwhelming. A larger sample might have included patients with a rapidly developing illness, for whom hospital care would have made a difference"....

Statins and aspirin may protect against severe vision loss in elderly

...ce some evidence suggests that fat deposits in eye membranes may lead to AMD. But Duncan and her colleagues found no association between cholesterol levels after statin treatment and wet AMD. The most likely, but still unproven, explanation involves the anti-inflammatory properties of both statins and aspirin,...

Outbreak of skin infections sheds light on risk factors for bacterial resistance

... is a common bacterium found on human nasal mucous membranes and skin, and strains that are resistant to methicillin can cause disease. Until recently drug-resistant strains were considered to be acquired almost exclusively in hospital settings, but reports of MRSA acquired in the community are increasing, and...

Patients with uncontrolled epilepsy have low levels of fatty acids

...ial to the proper development and function of cell membranes in the brain. But one particular fatty acid, docos...ficantly lower levels of DHA in the red blood cell membranes of the group with uncontrolled epilepsy (mean erythrocyte membrane DHA level of 2.74%) when compared...

Alternative/supplemental breast imaging methods tested

...issue conducts and stores electricity. Living cell membranes carry an electric potential that affect the way a current flows, and different cancer cells have different electrical characteristics. * MIS: This exam involves the propagation of very low levels (1000 times less than a cell phone) of microwave ener...

Intranasal corticosteroid receives FDA pregnancy Category B rating for allergic rhinitis

...causes an inflammation or irritation of the mucous membranes lining the nose. It is caused by allergens such as pollen, dust mites, mold, or animal dander and may produce sneezing, congestion, runny nose, and other related symptoms. According to the American Academy of Allergy, Asthma and Immunology, nearl...

Improved acute lymphoblastic leukemia treatment offers hope for eliminating irradiation

...cerebrospinal fluid-filled spaces between the thin membranes covering the spinal cord. The researchers base their conclusion on results of a study of ALL treatment at St. Jude called Total Therapy Study XIIIB, which are reported in the Nov. 1 issue of the journal Blood. The overall five-year event-free surviv...

News tips for Tuesday, November 9, 2004

...s of CMR images calculated blood supply to the two membranes around the heart muscle, the myocardium. Both of these "myocardial perfusion reserve indices" showed significant improvement on testosterone treatment. "In men with CAD and low plasma testosterone, chronic oral testosterone treatment improves myoca...

Mayo Clinic researchers create 'obedient virus'; First step to use measles virus against cancer

...ed to bind to a partner on their target cell, fuse membranes to enter the target cell and then take over the cellular machinery. When they succeed in doing this, an infection occurs. Viruses are so good at taking over cells that researchers have long dreamed of exploiting the specific attraction viruses have t...

New math model of heart cell has novel calcium pathway

...in a dynamic environment. Ion channels along cell membranes open and close to allow these interactions. In heart cells, for instance, many different kinds of ion channels interact to generate the action potentials that go through the heart and cause a synchronized, normal contraction. In a normal heart, ac...

Engineers develop biowarfare sensing elements for future highly sensitive nerve-gas detectors

...eat loss, Shi's group isolated the silicon nitride membranes attaching the electrodes using trapeze-like strands of microfabricated silicon nitride. The sensor requires the high temperature to activate the reaction between DMMP molecules and the tin-oxide sensor element. That reaction changes the electrical c...

Induction at 32 weeks possible action for expectant moms with premature membrane rupture

...in this situation are at risk for infection of the membranes surrounding the baby, and such infection can prompt premature delivery or infection of the uterus after delivery. Unborn babies are at risk for a host of infections, including one that can lead to cerebral palsy, from bacteria entering the baby's blo...

Impact of scientific advances on drug studies and membrane research to be explored

...ranging from channels that allow proteins to cross membranes and receptors that signal changing conditions of a cell's environment, to the molecular biology and genetics of the membrane processes leading to thermosensation and hearing. For a complete list of speakers, topics and the schedule, visit www.delang...

2005 Salivary Research Award

... whereby the fusion of secretion granules and cell membranes occurs, and proteins such as v-SNAREs and t-SNAREs have been identified. Dr. Castle has contributed significantly to this field with his discovery of a new family of proteins--named SCAMPs--occurring widespread in different mammalian tissues that may...

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