Schizophrenia-like conditions can occur without hallucinations and delusions — that is, with only negative and cognitive symptoms. One term for these conditions that has fallen out of fashion is simple schizophrenia. Newer terms, as listed in the American Psychiatric Association diagnostic manual, are schizotypal personality and schizoid personality. Both these disorders involve discomfort with or incapacity for social relations, apparent indifference to others, and emotional inexpressiveness — classic schizophrenia symptoms. Schizotypal personality disorder also implies eccentric to bizarre beliefs, habits, and appearance. Schizophrenia in its earliest stages, before the first psychotic break, sometimes looks exactly like schizotypal personality.
The underlying brain malfunction in schizophrenia is complicated and not well understood, but it almost certainly affects the interaction between the centers of judgment and planning in the prefrontal cortex and the centers of emotion and memory in the temporal lobes and limbic system. One theory is that the brain’s noise level rises when the excitatory neurotransmitter glutamate becomes overactive in the prefrontal cortex and at the same time stimulates receptors for another neurotransmitter, dopamine, in the limbic region. According to this theory, negative and cognitive symptoms result directly from the glutamate activity — in part as a defense against the noise — and psychotic symptoms are a byproduct of dopamine activity in the limbic system.
But the limbic system also contains the brain’s reward circuits — the place where we learn what to desire and how to recognize the cues indicating that something desirable is on hand. If patients with schizophrenia often seem to want too little (avolition), it could be the result of malfunctioning in the reward system.
The original antipsychotic drugs, introduced in the mid-20th century, worked exclusively by suppressing activity at dopamine nerve receptors in the limbic system. Since the 1980s, a new generation of drugs has taken first place on prescription pads and pharmacy shelves. Because these drugs act on the brain in different and more varied ways, some psychiatrists hoped that they would relieve negative as well as positive symptoms. The results have been disappointing. None of the drugs now available is a specific treatment for schizophrenia. All of them are roughly equally good at suppressing psychotic symptoms and equally ineffective against negative symptoms — whether the source of these symptoms is schizophrenia or another disorder.
No drug treatment for negative symptoms is on the near horizon, but the search continues. One approach involves stimulation of the NMDA receptor, which regulates the release of glutamate in the prefrontal cortex. If drugs that affect negative symptoms are found, they might be tested on people with schizotypal or schizoid personality, or even on genetically vulnerable family members who may be in the early stages of schizophrenia.
That’s what I have been posting today, anything that stimulates the NMDA receptors reduces negative symptoms. Glycine does it but we need something much stronger and without causing nausea. Studies showing 36% improvement used 60g of glycine. Lumateperon, the new AP, stimulates NMDA receptors more than glycine and has no side effects. We have a user here using Lumateperone.
“NMDA receptor modulators (glutamate modulators) are a new form of antipsychotic that are in Phase II FDA study.
NMDA receptor modulators are being studied and this modality of treatment may once approved as antipsychotic medications gradually replace the current (dopaminergic) antipsychotics.”
Can’t you buy it on ebay from China? Its closer to India and cheaper. I bought 250g Sarcosine from ebay China but it still did not arrive, I am in Canada and post is taking more time too because of corona.
I was able to work after taking 40-60g per day but now I take 15g because of nausea. In research studies they used 60g. Now with 15g I feel more energy but not yet ready for work.
Exactly, from my experience I needed more than 25g to be able to work and have significant improvement. Its too much and causes nausea sometimes vomiting but taking anti-nausea pill stops the nausea and vomiting. I will start taking bigger doses than 15g and take anti-nausea pill before.