Showing posts with label Neuroplasticity. Show all posts
Showing posts with label Neuroplasticity. Show all posts

Wednesday, January 11, 2017

Nerve-signaling protein regulates gene associated with Schizophrenia

That is the title of this article I am reviewing today. "Researchers from the University of California, San Diego, have identified a protein that regulates a gene associated with schizophrenia. The study, published in the Journal of Neurophysiology, was chosen as an APSselect article for January.
Schizophrenia -- a chronic mental illness that affects a person's thoughts, feelings and behavior -- is determined in part by genetic makeup. The DISC1 gene is associated with developing schizophrenia. DISC1 is involved in the growth of nerve cells, proper nerve signaling and the ability of the brain to grow and adjust (neuroplasticity) throughout a person's lifetime. Loss of DISC1 function can interrupt the normal signaling pattern, which may lead to schizophrenia-like symptoms, such as movement disorders, memory problems and reduced expression of emotions."I do not have to bad of memory problems I can still remember numbers great.  I also watch how my memory is on other things and I think it is normal. Although I do know people with mental illness that have memory problems. As for reduced expression of emotions I think I fall into that category although I have nothing to base it on.
The article continues: "Caveolin (Cav-1) is a cell membrane protein that promotes nerve signaling and neuroplasticity in the nervous system. In this study, the research team looked at the interaction between Cav-1 and DISC1 in the nerve cells of mice. The team is the first to find that Cav-1 regulates the function of DISC1. Mice that did not express the Cav-1 protein had less DISC1 expression in the brain and showed symptoms on the molecular level similar to that seen in brains afflicted with schizophrenia. When the researchers reintroduced Cav-1 specifically in nerve cells of these mice, DISC1 protein, in addition to proteins critical for synaptic plasticity (the ability of neurons to grow and form new connections), returned to normal levels."  Now that sounds promising because if they can find medication that returns synaptic plasticity that would be great for all that have schizophrenia. Even though it would not help me I think it would be great for all other's that suffer this disease.
The article ends: "'The study's findings have significant implications for schizophrenia treatment. 'While pharmacological treatments such as antipsychotics are available for schizophrenia, these classes of drugs show poor efficacy for most patients, especially in reversing cognitive abnormalities,' wrote the researchers. 'Further understanding of how Cav-1 modulates DISC1 to maintain and organize neuronal growth signaling and proper function is of upmost importance to better understand and identify potential molecular targets for treating schizophrenia.'"What they have for medicine now is not all that great.  I do OK now but I have to always remember that after I take my medication I could fall asleep in the next two hours a side effect.  New medication that help a person grow is of the uppermost urgency.

Tuesday, April 28, 2015

Researchers Find Way to Increase Neuroplasticity and Treat “Negative” Symptoms of Schizophrenia

That is the title of the article I am writing about. This is and old article I have never written yet. I think it would be interesting if there were more like it. "Recent research at McLean Hospital and Harvard University Medical School shows a very promising possibility for the future treatment of the “negative” symptoms of schizophrenia by improving neuroplasticity––the ability of the nerve cell networks in the brain to physically adapt to changing conditions. Negative symptoms in schizophrenia include decrease in motivation, lack of attention, emotional flatness, memory loss and social withdrawal."  We really need something to help with negative symptoms. I write about them a lot in my blogs because I work and I know how hard it would be to do nothing because of negative symptom's.
The article goes on to say: "The research team was led by Joseph T. Coyle, M.D., a NARSAD Distinguished Investigator Grantee and Foundation Scientific Council Member. Dr. Coyle’s team at Harvard Medical School included Vadim Y. Bolshakov, Ph.D., a two-time NARSAD Grantee and Professor of Psychiatry. The researchers worked with mice to determine if they could find a cluster of abnormalities known to affect the brain’s hippocampus in people with schizophrenia. The mice were genetically engineered to have very low N-methyl-D-aspartate (NMDA) receptor activity in the brain, a condition suspected to be linked to impaired synaptic plasticity, memory formation and the negative symptoms of schizophrenia. The researchers investigated associated abnormalities including overall shrinkage of the hippocampus; decreased density of tiny nodules called dendritic spines, which serve as spots where synapses, or communications junctions, can form between neighboring neurons; and altered signaling pathways that help regulate neuroplasticity."  It would help people with mental illness that have negative symptoms. I know from the little I messed with neuroplasticity that it does help with memory.  The games anyway that is what I used.  It is seeing a picture and remembering where it was and hitting the right button. I performed better with time.
The article ends: "
In a paper published in the May 31st issue of Proceedings of the National Academy of Sciences, Drs. Coyle, Bolshakov and colleagues reported that the mice with low NMDA receptor activity “displayed impaired hippocampal plasticity, as well as the morphological [shape], neurochemical and cognitive abnormalities consistent with what is observed in schizophrenia.” This was an exciting finding, but then they went further. The mice used in the experiments had only about 10 percent of normal NMDA receptor activity because they had been engineered to lack D-serine, one of two molecules needed to activate the receptors. When the researchers treated the mice with D-serine, NMDA receptor function in the hippocampus was restored. Over time, all of the observed hippocampal symptoms proved reversible.
This new work lends important support to the theory that low activity (“hypoactivity”) in NMDA receptors in the brain can cause pathologies seen in people with schizophrenia and importantly, that the condition may be treatable and the symptoms reversed. While not the sole cause of schizophrenia, the ability to reverse this hypoactive condition in mice suggests it may be possible to develop D-serine-based treatments for use in people―what could prove to be a breakthrough in the treatment of schizophrenia."  So why has this treatment came available by now. I know it takes time although there has been nothing new to happen to help people with mental illness in a long time.

Wednesday, September 17, 2014

Game your brain: the new benefits of neuroplasticity Part three





This is the third part of an article I am writing about.  “Last year, Gazzaley cofounded a company called Akili Interactive Labs, which is developing an upgrade of NeuroRacer called Evo.  Like Posit Science, Akili is seeking FDA approval for EVO as a possible software-based treatment for ADHD. ‘Most people associate medicine with drugs, and that’s the result of a big, successful brainwashing campaign by pharma companies,’ Gazzaley says. ‘But when it comes to brain health, drugs don’t work very well- - and the drug companies know that. If you look across the world’s top – ten pharma companies, four have withdrawn research from neuroscience.  That’s not because we’ve cured any of these diseases. Hopefully now we’ll start thinking of software and hardware as a form of medicine.’  Gazzaley has been preparing to open a new neuroscience laboratory at the University of California, San Francisco. ‘We’re going to be able to record real-time EEG data as you play one of our games,’ Gazzaley says.  ‘The challenge won’t just be correlated to your performance, but also directly by neural process in your brain.’ He gives Wired a copy of the November 2013 issue of the scientific journal Nature.  The cover headline is ‘Game Changer’ and the image shows the cartoon of an old balding man driving a car through NeuroRacer’s mountainous roads. ‘Before I’d developed NeuroRacer, I used to give talks to groups of colleagues and present my data on cognitive decline and its mechanisms, and they would love it, find it fascination.  But when I gave talks about it to a public audience of older people, like the American Association of Retired Persons, it was horrifying.  If you give a lot of talks you get good at reading subtle signs in the audience.  Every year at the AGM, I had over a thousand people in the audience, all grey, and at the end of my talk, I could just see them asking ‘Is this it?  Is this the end of the movie?’ There was this feeling like that was not really the right ending.’ He points to the Nature cover. ‘That is the right ending.’” It all sounds promising. It is the right ending if it can rewire the brain so that schizophrenics feel that they are doing better my having participated in sound research.
I will end this article with: “Older adults are often advised to keep their minds sharp, but such advice is so generally as to be useless.  ‘It’s true that we lose abilities as we get older, but I believe that most of that loss is driven by a lack of effort to sustain brain fitness,’ says Alvaro Pascual-Leone, a neurologist at Harvard Medical School and one of the most-cited scientists in the field of brain plasticity. ‘We’re lazy, we don’t get out of our comfort zones, we stop learning new things.  The fact is that whatever you do, from activities to relationships to thoughts, ultimately enters the brain and affects it.  But we can harness that property of the brain for our own benefit. Ultimately, it’s a message of hope for people.’  The science of neuroplasticity illuminates the dynamic evolution of our brains throughout life, documenting how different experiences can dramatically change it. Its most pertinent insight, however, is that we can take control of such transformation.  Merzenich’s and Gazzaley’s brain training exercises provide us with a tool to do it.  They are a gym for the brain, a place where we can go to strengthen and expand our cognitive capabilities, which, to a very large extent, define who we are and determine what we are capable of.” How far can we go?  Makes me which I was younger and get into a field where the possibilities are endless with the brain.  It is the new frontier.