Discover the Science of Health
Scientists have been looking for itch-specific nerves for decades. New research from investigators at Johns Hopkins University and Yale University in the United States and several universities in China has identified sensory neurons in mice that are dedicated to relaying itchy sensations from the top layers of skin to the spinal cord [1].
Green tea has been enjoyed for centuries, and its benefits have been widely touted. It is reputed to help treat many of modernity’s worst ills, including cancer, heart disease, diabetes, HIV infection, and neurodegenerative diseases. New work done in China furthers the observations that green tea can help prevent neurodegeneration. The report, published in Molecular Nutrition and Food Research, starts to elucidate the mechanism by which it does so [1].
Mitochondria are specialized subunits inside a cell that produce the cell’s energy and regulate its metabolism. Research suggests that mitochondria may play a central role in neuronal cell survival because they regulate both energy metabolism and cell death pathways. Using genetic mouse models of Alzheimer’s disease, researchers from Mayo Clinic have found that mitochondria in the brain are dysfunctional early in the disease. The findings were recently published in the open access journal PLoS ONE.
According to an article in the Morbidity and Mortality Weekly Report, a publication of the U.S. Centers for Disease Control and Prevention (CDC), the prevalence of autism spectrum disorder (ASD) is higher than ever [1]. The CDC periodically surveys the prevalence of ASD, looking during each surveillance period at the percentage of 8-year-old children who have current ASD diagnoses. In 2000, a survey of children born in 1992 revealed that one in 150 had ASD. These numbers have been steadily climbing, such that the most recent survey — completed in 2008 and surveying children born in 2000 — indicates that one in 88 children has ASD. The numbers are even more disturbing for male children, who have an ASD prevalence of one in 54.
From visiting classrooms for Brain Awareness Week, Dr. Janet Dubinsky from the Department of Neuroscience at the University of Minnesota became aware that teachers wanted to learn what neuroscience has uncovered about brain mechanisms of learning and memory. To address this need, the Department of Neuroscience and the Science Museum of Minnesota created BrainU. Her current partner is Dr. Gillian Roerhig from the STEM Education Center.
Launched in 2000, BrainU is a grant-funded professional development program that teaches educators neuroscience principles and effective methodology for teaching neuroscience in the middle to high school classroom. BrainU, the neuroscience teacher institute, provides teachers with up to 160 hours of neuroscience training, materials, and staff support to bring brain science to their students. Participants in these professional workshops receive updates on the latest in neuroscience research — discussion is complemented with hands-on activities and lab work.
The BrainU website provides lesson plans and resources for teachers and some cool stuff, including brain pictures, optical illusions, and movies.
In the nervous system, the synapse is essential for neuronal function. A synapse is the junction between two nerve cells or neurons, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter. The movie ‘The Synapse’, used with permission from BrainU, tells an entertaining and informative story of how neurons communicate with each other at synapses, changing information from electrical to chemical and back to electrical signals. Check out their story below (the movie opens in a new window).
Copyright 2000-2012, BrainU, University of Minnesota Department of Neuroscience and Department of Curriculum and Instruction. Supported by a Science Education Partnership Award (SEPA) from the National Center For Research Resources and the Division of Program Coordination, Planning, and Strategic Initiatives of the National Institutes of Health, with additional funding from SEDAPA and ARRA. Its content is solely the responsibility of the authors and does not necessarily represent the official views of NCRR or NIH.
