in vivo News and Research

RSS

Novel technique allows scientists to assay tumor invasion attributable to interstitial fluid

There are many factors that affect tumor invasion, the process where a tumor grows beyond the tissue where it first developed. While factors like genetics, tissue type and environmental exposure affect tumor metastasis and invasion, physical forces like fluid flow remain a poorly understood component of tumor invasion. A new video article in JoVE, the Journal of Visualized Experiments, describes a novel procedure that allows researchers to study and test the microenvironment of a growing tumor.

26 Jul 2012

Child who received first stem cell trachea transplant functioning well two years on

The first child stem cell-supported trachea transplant is functioning well two years on, according to an Article published Online First in The Lancet today. The follow-up of the procedure, carried out in 2010 at Great Ormond Street Hospital (GOSH), shows that the new organ has strengthened and does not appear to have induced any signs of rejection. The 13-year-old boy who received the transplant continues to breathe normally, has grown 11 cm in height and has returned to school. He does not require any anti-rejection therapy.

26 Jul 2012

Single event of brain trauma can lead to Alzheimer’s

A study, performed in mice and utilizing post-mortem samples of brains from patients with Alzheimer’s disease, found that a single event of a moderate-to-severe traumatic brain injury (TBI) can disrupt proteins that regulate an enzyme associated with Alzheimer’s. The paper, published in The Journal of Neuroscience, identifies the complex mechanisms that result in a rapid and robust post-injury elevation of the enzyme, BACE1, in the brain. These results may lead to the development of a drug treatment that targets this mechanism to slow the progression of Alzheimer’s disease.

25 Jul 2012

How an opportunistic fungal pathogen knows when to attack

The opportunistic fungal pathogen Candida albicans inconspicuously lives in our bodies until it senses that we are weak, when it quickly adapts to go on the offensive. The fungus, known for causing yeast and other minor infections, also causes a sometimes-fatal infection known as candidemia in immunocompromised patients. An in vivo study, published in mBio, demonstrates how C. albicans can distinguish between a healthy and an unhealthy host and alter its physiology to attack.

25 Jul 2012

Moderate-to-severe TBI can disrupt proteins that regulate enzyme associated with Alzheimer's

A study, performed in mice and utilizing post-mortem samples of brains from patients with Alzheimer's disease, found that a single event of a moderate-to-severe traumatic brain injury (TBI) can disrupt proteins that regulate an enzyme associated with Alzheimer's.

25 Jul 2012

Human brown fat may actually be beige

Beige fat cells are more closely related to white than brown fat cells, say researchers who found that brown fat deposits in humans appear to be composed of beige cells.

24 Jul 2012

Herbal therapy no alternative in HCV infection

The commonly used herbal remedy, silymarin, offers no benefit to patients with treatment-resistant hepatitis C virus infection, a study shows.

23 Jul 2012

Study explores role of L. reuteri against foodborne infection

While many bacteria exist as aggressive pathogens, causing diseases ranging from tuberculosis and cholera, to plague, diphtheria and toxic shock syndrome, others play a less malevolent role and some are critical for human health.

21 Jul 2012

Placenta-derived endothelial colony-forming cells are more vasculogenic: Study

A study comparing whether endothelial colony-forming cells (ECFCs) derived from human placenta or those derived from human umbilical cord blood are more proliferative and better for forming new blood vessels has found that ECFCs derived from human placenta are more vasculogenic.

20 Jul 2012

Bryologs more potent than prostratin in treating HIV

Thanks to antiretrovirals, an AIDS diagnosis hasn't been a death sentence for nearly two decades. But highly active antiretroviral therapy, or HAART, is also not a cure.

19 Jul 2012

Helmholtz-Zentrum Geesthacht to establish Virtual Institute

In collaboration with the university hospitals of Hamburg, Hannover and Graz, as well as further partners, the Helmholtz-Zentrum Geesthacht will establish a Virtual Institute, whose focus will be set on degradable magnesium implants. One aim of the research association coordinated from Geesthacht is to develop first prototypes of orthopedic implants.

19 Jul 2012

Researchers verify role of alpha-synuclein aggregates in vivo

Using a two-photon microscope capable of peering deep within living tissue, researchers at the University of California, San Diego School of Medicine have found new evidence that alpha-synuclein protein build-up inside neurons causes them to not only become "leaky," but also to misfire due to calcium fluxes.

19 Jul 2012

Researchers identify new behavior for the human macrophage

Researchers at the Institute of Human Virology of the University of Maryland School of Medicine have identified a new behavior for the human macrophage that provides new explanations for several features of HIV biology, including how the virus persists within the body indefinitely, how quiescently infected CD4+ T-cells arise, and how the infection leads to depletion of CD4+ T-cells.

19 Jul 2012

Super-resolution microscopy highlights bacterial biofilms

A multi-fluorescent labeling strategy combined with super-resolution light microscopy has allowed researchers to observe the development of a bacterial biofilm in realtime.

18 Jul 2012

GE Healthcare announces final results from [18F]flutemetamol phase 3 study on AD

GE Healthcare today announced the final results from a phase 3 study of the investigational PET amyloid imaging agent, [18F]flutemetamol in terminally ill patients who had agreed to undergo postmortem brain autopsy.

18 Jul 2012

PsychoGenics, Afraxis partner to offer Enhanced Spine Platform technology

Afraxis and PsychoGenics today announced an alliance to offer Afraxis' Enhanced Spine Platform (ESP) technology as part of PsychoGenics' comprehensive testing capabilities and drug discovery services.

17 Jul 2012

New paper documents discovery of novel lipids, including MC3

Alnylam Pharmaceuticals, a leading RNAi therapeutics company, and collaborators announced today the publication of a scientific paper documenting the discovery of novel lipids used in second generation lipid nanoparticles (LNPs) for systemic delivery of RNAi therapeutics.

14 Jul 2012

AOSSM to present ten research awards and seven grants during annual meeting in Baltimore

In order to recognize and encourage cutting-edge research in key areas of orthopaedic sports medicine, the American Orthopaedic Society for Sports Medicine (AOSSM) will present ten research awards and seven grants during its Annual Meeting, July 12-15 in Baltimore, MD. As a leader in orthopaedic sports medicine, AOSSM annually provides more than $350,000 to research initiatives and projects around the country.

12 Jul 2012

Physiologists, neuropathologists identify origin of cancer metastasis formation

It is not primary tumors that are responsible for the majority of cancer deaths, but rather their metastases. Physiologists and neuropathologists from the University of Zurich have now identified the origin of metastasis formation, thereby becoming the first to reveal the pathway of metastasizing intestinal cancer cells out of the blood stream. The results allow new approaches in the development of cancer therapies.

12 Jul 2012

Cylene's Pol I inhibitor activates p53 and selectively destroys cancer cells

Cylene Pharmaceuticals today announced that research collaborators at the Peter MacCallum Cancer Centre (Peter Mac) in Melbourne, Australia have established, for the first time, that RNA Polymerase I (Pol I) activity is essential for cancer cell survival and that its inhibition selectively activates p53 to kill tumors. Published today in Cancer Cell, the findings show that Cylene's Pol I inhibitor, CX-5461, selectively destroys cancer by activating p53 in malignant but not in normal cells.

11 Jul 2012