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Scientists discover novel mechanism that influences GAS virulence at early steps of necrotizing fasciitis

How does Streptococcus pyogenes, or Group A streptococcus (GAS) — a bacterial pathogen that can colonize humans without causing symptoms or can lead to mild infections — also cause life-threatening diseases such as necrotizing fasciitis (commonly known as flesh-eating disease) and streptococcal toxic shock syndrome?

21 Jan 2014

Researchers identify molecular mechanism by which cocaine alters brain's reward circuits, causes addiction

Researchers from the Icahn School of Medicine at Mount Sinai have identified a new molecular mechanism by which cocaine alters the brain's reward circuits and causes addiction.

21 Jan 2014

Researchers discover fundamental biology of calcium waves in relation to heart arrhythmias

Researchers have discovered the fundamental biology of calcium waves in relation to heart arrhythmias. The findings published this month in the January 19 edition of Nature Medicine outlines the discovery of this fundamental physiological process that researchers hope will one day help design molecularly tailored medications that correct the pathophysiology.

20 Jan 2014

Researchers managed to replicate human pancreatic beta cells in mouse model

Klaus Kaestner, PhD, professor of Genetics and postdoctoral fellow Dana Avrahami, PhD, from the Perelman School of Medicine, University of Pennsylvania, published a study this week in the Journal of Clinical Investigation, with colleague Benjamin Glaser, MD, from the Hadassah-Hebrew University Medical Center, Jerusalem, and colleagues. In this study, they were able to replicate human pancreatic beta cells - the cells in our body that produce the critical hormone insulin - in a mouse model in which donor cells were transplanted. The newly replicated cells retained features of mature beta cells and showed a physiological response to glucose.

17 Jan 2014

Research opens way to possible new treatments for bacterial infections

How does Streptococcus pyogenes, or Group A streptococcus (GAS) - a bacterial pathogen that can colonize humans without causing symptoms or can lead to mild infections - also cause life-threatening diseases such as necrotizing fasciitis (commonly known as flesh-eating disease) and streptococcal toxic shock syndrome?

17 Jan 2014

New technology efficiently transfers investigational antibodies from blood via blood-brain barrier

Today the scientific journal Neuron published results on the Roche-designed Brain Shuttle technology that efficiently transfers investigational antibodies from the blood through the blood-brain barrier (BBB) into the brain in preclinical models.

10 Jan 2014

Study: HIV-specific poison kills persisting HIV-infected cells during antiretroviral therapy

A team including University of North Carolina and NIH scientists has demonstrated in a mouse model that an HIV-specific poison can kill cells in which the virus is actively reproducing despite antiretroviral therapy.

10 Jan 2014

Montreal researchers identifies two specific key players in growth of GBM

Glioblastoma (GBM) is the most common and deadly form of primary malignant brain cancer accounting for approximately 15% of all brain tumours and occurring mostly in adults between the ages of 45 and 70.

9 Jan 2014

Research: New target for treating Huntington's and Parkinson's disease

Research from Western University (London, Canada) has revealed a possible new target for treating movement disorders such as Huntington's disease (HD) and Parkinson's disease. Stephen Ferguson, PhD, a scientist at Western's Robarts Research Institute, and Fabiola Ribeiro, PhD, of the Universidade Federal de Minas Gerais in Brazil found a definite improvement in motor behaviors in a HD mouse model when one of the major neurotransmitters in the brain, called Metabotropic Glutamate Receptor 5 (mGluR5) was deleted.

9 Jan 2014

Hopkins scientists design new mouse that mimics common form of leukemia

Johns Hopkins Kimmel Cancer Center investigators have genetically engineered a new mouse that mimics a common form of leukemia in humans. Studying the model could lead to new understanding of the disease, they say.

6 Jan 2014

Dysfunction in MADD gene in mice causes fasting hyperglycemia

Researchers from the University of Illinois at Chicago College of Medicine have found that dysfunction in a single gene in mice causes fasting hyperglycemia, one of the major symptoms of type 2 diabetes. Their findings were reported online in the journal Diabetes.

5 Jan 2014

Cardiotoxicity of doxorubicin is mediated through mitochondrial iron accumulation

Doxorubicin is a widely used as a component of chemotherapy regimes; however, the use of doxorubicin is associated with severe cardiotoxicity. It is unclear exactly how doxorubicin promotes cardiotoxicity, but it has been proposed that doxorubicin-associated cardiomyopathy develops as the result of reactive oxygen species (ROS) production and iron accumulation.

2 Jan 2014

Scientists find inhibiting action of BRD4 protein may eradicate rare type of soft-tissue cancer

A deadly, rare type of soft-tissue cancer may be completely eradicated simply by inhibiting a key protein involved in its growth, UT Southwestern Medical Center researchers report.

27 Dec 2013

Small molecule nonsense suppression strategy for aniridia-associated defects

Congenital aniridia is a progressive disease that is associated with improper development of eye structures as well as abnormalities in the brain and pancreas. A variety of nonsense mutations in the PAX6 gene are linked with aniridia; however, despite understanding the genetic basis of the disease, few treatment and prevention strategies are available.

22 Dec 2013

Scientists develop new potential cure for rare eye disease

University of British Columbia and Vancouver Coastal Health scientists have developed a potential cure for a rare eye disease, showing for the first time that a drug can repair a birth defect.

22 Dec 2013

Researchers evaluate mangafodipir for relief of oxaliplatin-associated neuropathies

An unfortunate side effect of the platinum-chemotherapy drug oxaliplatin is the development of neurotoxicity, which can adversely affect a patient's quality of life; therefore, the benefit of oxaliplatin-based therapy must be balanced with prevention of neuropathies. Currently, there are no therapeutic interventions available to relieve oxaliplatin-associated neurological symptoms, which are thought to be a result of reactive oxygen species-associated damage.

22 Dec 2013

Patients with Loeys-Dietz syndrome at increased risk for aortic aneurysm

Patients with the connective tissue disorder Loeys-Dietz syndrome are at high risk for aortic aneurysm. LDS results in the presence of missense mutations within either of the genes encoding receptors for TGF-β. LDS-associated mutations are predicted to reduce TGF-β signaling; however, aortic tissue samples from LDS patients indicate that TGF-β signaling may be enhanced.

22 Dec 2013

Experimental drug inhibits BTK molecule in patients with chronic lymphocytic leukemia

A new study led by researchers at The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James) helps confirm that a molecule targeted by the experimental drug ibrutinib is critical for the development of chronic lymphocytic leukemia, the most common form of adult leukemia.

20 Dec 2013

UCLA researchers find no evidence of association between iron levels and atherosclerosis risk

A UCLA research team has found no evidence of an association between iron levels in the body and the risk of atherosclerosis, the hardening and narrowing of the arteries that leads to cardiovascular disease, the No. 1 killer in the U.S.

18 Dec 2013

Decreasing levels of reactive oxygen species can break cycle of unhealing wounds

Chronic wounds affect an estimated 6.5 million Americans at an annual cost of about $25 billion. Further, foot blisters and other diabetic ulcers or sores account for the vast majority of foot and leg amputations in the United States today.

18 Dec 2013

Mouse Model News and Research

Scientists discover novel mechanism that influences GAS virulence at early steps of necrotizing fasciitis

Researchers identify molecular mechanism by which cocaine alters brain's reward circuits, causes addiction

Researchers discover fundamental biology of calcium waves in relation to heart arrhythmias

Researchers managed to replicate human pancreatic beta cells in mouse model

Research opens way to possible new treatments for bacterial infections

New technology efficiently transfers investigational antibodies from blood via blood-brain barrier

Study: HIV-specific poison kills persisting HIV-infected cells during antiretroviral therapy

Montreal researchers identifies two specific key players in growth of GBM

Research: New target for treating Huntington's and Parkinson's disease

Hopkins scientists design new mouse that mimics common form of leukemia

Dysfunction in MADD gene in mice causes fasting hyperglycemia

Cardiotoxicity of doxorubicin is mediated through mitochondrial iron accumulation

Scientists find inhibiting action of BRD4 protein may eradicate rare type of soft-tissue cancer

Small molecule nonsense suppression strategy for aniridia-associated defects

Scientists develop new potential cure for rare eye disease

Researchers evaluate mangafodipir for relief of oxaliplatin-associated neuropathies

Patients with Loeys-Dietz syndrome at increased risk for aortic aneurysm

Experimental drug inhibits BTK molecule in patients with chronic lymphocytic leukemia

UCLA researchers find no evidence of association between iron levels and atherosclerosis risk

Decreasing levels of reactive oxygen species can break cycle of unhealing wounds

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