The University of California, San Francisco (UCSF) is a public land-grant research university in San Francisco, California. It is part of the University of California system and is dedicated entirely to health science and life science. It conducts research and teaching in medical and biological sciences.
The National Institute of Neurological Disorders and Stroke (NINDS) is a part of the U.S. National Institutes of Health (NIH). It conducts and funds research on brain and nervous system disorders and has a budget of just over US$2.03 billion. The mission of NINDS is "to reduce the burden of neurological disease—a burden borne by every age group, every segment of society, and people all over the world". NINDS has established two major branches for research: an extramural branch that funds studies outside the NIH, and an intramural branch that funds research inside the NIH. Most of NINDS' budget goes to fund extramural research. NINDS' basic science research focuses on studies of the fundamental biology of the brain and nervous system, genetics, neurodegeneration, learning and memory, motor control, brain repair, and synapses. NINDS also funds clinical research related to diseases and disorders of the brain and nervous system, e.g. AIDS, Alzheimer's disease, epilepsy, muscular dystrophy, multiple sclerosis, Parkinson's disease, spinal cord injury, stroke, and traumatic brain injury.
Nervous tissue, also called neural tissue, is the main tissue component of the nervous system. The nervous system regulates and controls body functions and activity. It consists of two parts: the central nervous system (CNS) comprising the brain and spinal cord, and the peripheral nervous system (PNS) comprising the branching peripheral nerves. It is composed of neurons, also known as nerve cells, which receive and transmit impulses, and neuroglia, also known as glial cells or glia, which assist the propagation of the nerve impulse as well as provide nutrients to the neurons.
Glia, also called glial cells(gliocytes) or neuroglia, are non-neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system that do not produce electrical impulses. The neuroglia make up more than one half the volume of neural tissue in our body. They maintain homeostasis, form myelin in the peripheral nervous system, and provide support and protection for neurons. In the central nervous system, glial cells include oligodendrocytes, astrocytes, ependymal cells and microglia, and in the peripheral nervous system they include Schwann cells and satellite cells.
Microglia are a type of neuroglia located throughout the brain and spinal cord. Microglia account for about 10-15% of cells found within the brain. As the resident macrophage cells, they act as the first and main form of active immune defense in the central nervous system (CNS). Microglia originate in the yolk sac under a tightly regulated molecular process. These cells are distributed in large non-overlapping regions throughout the CNS. Microglia are key cells in overall brain maintenance—they are constantly scavenging the CNS for plaques, damaged or unnecessary neurons and synapses, and infectious agents. Since these processes must be efficient to prevent potentially fatal damage, microglia are extremely sensitive to even small pathological changes in the CNS. This sensitivity is achieved in part by the presence of unique potassium channels that respond to even small changes in extracellular potassium. Recent evidence shows that microglia are also key players in the sustainment of normal brain functions under healthy conditions. Microglia also constantly monitor neuronal functions through direct somatic contacts and exert neuroprotective effects when needed.
The neuroimmune system is a system of structures and processes involving the biochemical and electrophysiological interactions between the nervous system and immune system which protect neurons from pathogens. It serves to protect neurons against disease by maintaining selectively permeable barriers, mediating neuroinflammation and wound healing in damaged neurons, and mobilizing host defenses against pathogens.
Gliosis is a nonspecific reactive change of glial cells in response to damage to the central nervous system (CNS). In most cases, gliosis involves the proliferation or hypertrophy of several different types of glial cells, including astrocytes, microglia, and oligodendrocytes. In its most extreme form, the proliferation associated with gliosis leads to the formation of a glial scar.
Ben A. Barres was an American neurobiologist at Stanford University. His research focused on the interaction between neurons and glial cells in the nervous system. Beginning in 2008, he was chair of the Neurobiology Department at Stanford University School of Medicine. He transitioned to male in 1997, and became the first openly transgender scientist in the National Academy of Sciences in 2013.
A glial scar formation (gliosis) is a reactive cellular process involving astrogliosis that occurs after injury to the central nervous system. As with scarring in other organs and tissues, the glial scar is the body's mechanism to protect and begin the healing process in the nervous system.
Beth Stevens is an associate professor in the Department of Neurology at Harvard Medical School and the F. M. Kirby Neurobiology Center at Boston Children’s Hospital. She has helped to identify the role of microglia and complement proteins in the "pruning" or removal of synaptic cells during brain development, and has also determined that the impaired or abnormal microglial function could be responsible for diseases like autism, schizophrenia, and Alzheimer's.
Kay M. Tye is an American neuroscientist and professor and Wylie Vale Chair in the Salk Institute for Biological Sciences. Her research has focused on using optogenetics to identify connections in the brain that are involved in innate emotion, motivation and social behaviors.
Mary Fenner Dallman was an American neuroendocrinologist and professor emerita at University of California, San Francisco, where she was the first tenure-track female faculty member in the Department of Physiology and worked for 38 years before retiring in 2007. She is known for her elucidation of the hypothalamic-pituitary-adrenal axis, and the discovery that comfort foods dampen the stress response.
Sergiu P. Pașca is a Romanian-American scientist and physician at Stanford University in California. He is known for creating and developing stem cell-based models of the human brain and applying organoids and assembloids to gain insights into neuropsychiatric disease.
Urtė Neniškytė is a Lithuanian neuroscientist. Her scientific interest and main area of work relates to the interaction of neurons and immune cells in the brain. She has studied the cellular mechanisms of Alzheimer's disease and is the co-author of the first articles about cell death in relation to phagocytosis.
HollisT. Cline is an American neuroscientist and the Director of the Dorris Neuroscience Center at the Scripps Research Institute in California. Her research focuses on the impact of sensory experience on brain development and plasticity.
Lisa Gunaydin is an American neuroscientist and assistant professor at the Weill Institute for Neurosciences at the University of California San Francisco. Gunaydin helped discover optogenetics in the lab of Karl Deisseroth and now uses this technique in combination with neural and behavioral recordings to probe the neural circuits underlying emotional behaviors.
Erin M. Gibson is a glial and circadian biologist as well as an assistant professor in the Department of Psychiatry and Behavioral Sciences and the Stanford Center for Sleep Sciences and Medicine at Stanford University. Gibson investigates the role of glial cells in sculpting neural circuits and mechanistically probes how the circadian rhythm modulates glial biology.
Katerina Akassoglou is a neuroimmunologist who is a Senior Investigator and Director of In Vivo Imaging Research at the Gladstone Institutes. Akassoglou holds faculty positions as a Professor of Neurology at the University of California, San Francisco. Akassoglou has pioneered investigations of blood-brain barrier integrity and development of neurological diseases. She found that compromised blood-brain barrier integrity leads to fibrinogen leakage into the brain inducing neurodegeneration. Akassoglou is internationally recognized for her scientific discoveries.
Cagla Eroglu is a Turkish neuroscientist and associate professor of cell biology and neurobiology at Duke University in Durham, North Carolina and an investigator with the Howard Hughes Medical Institute. Eroglu is also the director of graduate studies in cell and molecular biology at Duke University Medical Center. Eroglu is a leader in the field of glial biology, and her lab focuses on exploring the role of glial cells, specifically astrocytes, in synaptic development and connectivity.
Lindsay M. De Biase is an American neuroscientist and glial biologist as well as an assistant professor at the David Geffen School of Medicine at the University of California, Los Angeles. De Biase explores the diversity of microglia that exist within the basal ganglia circuitry to one day target regional or circuit-specific microglia in disease. De Biase's graduate work highlighted the existence and roles of neuron-OPC synapses in development and her postdoctoral work was critical in showing that microglia are not homogenous within the brain parenchyma.
