Synapse News and Research

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New findings challenge one of the established views of how nerve cells communicate with one another

Every time we move, feel emotions, think or remember, the nerve cells, or neurons, in our body transmit messages to one another via chemical signals called neurotransmitters. Within neurons are tiny organelles called synaptic vesicles that sequester neurotransmitters and release them when needed into the synapse, or space between nerve cells, where the chemical signal is transmitted to other neurons.

16 Feb 2005

Key insight into the process of normal synapse development may lead to improved treatment of conditions such as drug addiction and epilepsy

Communication in the brain travels from one nerve cell to another through critical connections called synapses. These neuron-to-neuron junctions form early in brain development, and their construction was thought to be guided by the nerve cells themselves.

13 Feb 2005

Ingestion of afterbirth appears to promote maternal behavior in mammals

A behavioral neuroscientist at the University at Buffalo holds that the ingestion of afterbirth by a mother, a feature of pregnancy in nearly all non-human mammals, not only relieves postpartum pain, but optimizes the onset of maternal behavior by mediating the activity of specific opioid activity circuits in the brain.

13 Feb 2005

Gene dynamin 2 underlies one form of Charcot-Marie-Tooth disease

A gene that plays many fundamental roles in cells throughout the body has, for the first time, been implicated in human disease, according to researchers at the Duke Center for Human Genetics.

31 Jan 2005

How do you remember your own name?

How do you remember your own name? Is it possible ever to forget it? The memory trace, or engram, "feels" like it is stored permanently in the brain and it will never be forgotten.

16 Jan 2005

Glia cells may be essential for the normal development of nerve cells responsible for hearing and balance

Traditionally viewed as supporting actors, cells known as glia may be essential for the normal development of nerve cells responsible for hearing and balance, according to new University of Utah research. The study is reported in the January 6, 2005 issue of Neuron and is co-authored by scientists at the University of Washington.

6 Jan 2005

Turning off cell suicide switch fails to stop prion damage

Researchers knew that prions, the misfolded proteins that cause mad cow disease and other brain disorders, were killing off a class of important brain cells in a transgenic mouse model. But when they found a way to rescue those cells, they were astonished to discover the mice still became sick.

21 Dec 2004

Toxic proteins explain memory loss in Alzheimer's patients

Researchers at Northwestern University have discovered a molecular mechanism -- a tiny protein attacking nerve cells -- that could explain why the brain damage in early Alzheimer's disease results in memory loss and not other symptoms such as loss of balance or tremors.

1 Dec 2004

A step closer to medical treatments for neural disorders

New insight into the role of a key regulator in cell division may help uncover new drug targets in the search for treatments for neural disorders such as Parkinson's and Huntington's disease.

29 Nov 2004

Prolonged abstinence, no visual problems in patients taking GVG for meth/cocaine abuse

A second, small clinical trial of a proposed addiction treatment led by investigators at NYU School of Medicine and the U.S. Department of Energy's Brookhaven National Laboratory has produced favorable results in the treatment of long-term addiction to methamphetamine and/or cocaine, with no visual side effects in any of the 30 patients enrolled.

18 Nov 2004

alpha4 may prove to be useful target for smoking addiction therapies

Nicotine is responsible for more than four million smoking-related deaths each year. Yet people still smoke. Why? One reason is the stranglehold of addiction, started when nicotine enhances the release of a neurotransmitter called dopamine

4 Nov 2004

An errant enzyme linked to bipolar disorder impairs awareness, perception and reasoning

The disturbed thinking, impaired judgment, impulsivity, and distractibility seen in mania, a destructive phase of bipolar disorder, may be traceable to overactivity of protein kinase C (PKC), suggests the study, funded by the National Institute of Mental Health (NIMH) and National Institute on Aging (NIA), and the Stanley Foundation.

1 Nov 2004

Interaction of nervous system proteins help researchers better understand age-related memory and hearing loss

In a finding that may one day help researchers better understand age-related memory and hearing loss, scientists have shown that two key nervous system proteins interact in a manner that helps regulate the transmission of signals in the nervous system.

29 Oct 2004

Study is the first to show that lowering the levels of lipid in nerve terminals affects the efficiency of neurotransmission

Yale researchers demonstrate the crucial role of a membrane lipid called phosphatidylinositol-4,5-bisphosphate (PtdIns (4,5)P2) in the communication of information between synapses in the brain, according to a study published this week in Nature.

26 Sep 2004

Relationship between brain chemical messenger glutamate and schizophrenia traits

Researchers at the NIH's National Institute of Mental Health (NIMH) have identified a relationship between a small section of one gene, the brain chemical messenger glutamate, and a collection of traits known to be associated with schizophrenia.

15 Aug 2004

Gene responsible for management of glutamate is a promising candidate in determining risk for schizophrenia

Researchers at the National Institute of Mental Health have identified a relationship between a small section of one gene, the brain chemical messenger glutamate, and a collection of traits known to be associated with schizophrenia.

11 Aug 2004

Mefloquine, an anti-malarial drug plays a critical role in movement, vision and memory

Brown University researchers have discovered that mefloquine, an anti-malarial drug, blocks two gap junction proteins, or connexins, in low doses and with very few side effects in the brains of laboratory mice.

5 Aug 2004

Research suggests the brain is a much more sensitive organ than originally perceived, sensitive to the tiniest of chemical signals

The brain is a maddeningly complex organ for scientists to understand. No assumption can remain unchallenged, no given taken as a given.

24 Jun 2004

Size and shape of synapses among neurons in the cerebral cortex determine long term memory capability

In a study to appear in the June 10 issue of Neuron, neuroscientists at the Picower Center for Learning and Memory at MIT show for the first time that storage of long-term memories depends on the size and shape of synapses among neurons in the outer part of the brain, the cerebral cortex.

14 Jun 2004

Exercise can help brain healing process

Exercise can stimulate injured neurons to regenerate their axons, which are the primary transmission lines of the nervous system, according to a study published June 1 in the print edition of the Proceedings of the National Academy of Sciences, and the last week of May in the early online edition.

2 Jun 2004