15-02-17 Seroquel wirksam ?

Nachdem ich bei den meisten Medikmanten / NEM die ich nun nutze lange recherchiert hatte, habe ich mit dem Medikament „Seroquel“ eventuell einen Glückstreffer ohne Recherche getroffen. Ich hatte es mir vor einigen Tagen oder knapp 2 Wochen in der Psychiatrie abgeholt, da es mir schonmal beim Schlafen geholfen hat. Eigentlich wird das nur bei psychotischen Krankheiten offiziell verschrieben, die Psychiater verschreiben es aber ohne Probleme bei Schlafstörungen, manchmal denke ich mir sie würden es auch ganz ohne Indikation verschreiben, so motiviert wie die beim Pillen verschreiben sind. Lange Rede kurzer Sinn, Seroquel bekommt man einfach. Es wirkt als Antagonist (besetzt den Rezeptor ohne ihn zu aktivieren) von Histamin, Dopmain, Noradrenalin und irgendwas macht es auch mit dem Glutamat, da bin ich aber noch nicht richtig schlau geworden.

Nun, jedenfalls ist mir bereits beim ersten Konsum aufgefallen, dass sich am morgen meine Wangen „fleischiger“ anfühlen und das rechte Kiefermuskeln ganz leicht an Kraft / Masse zugenommen hat. Ich dachte mir erst es wäre durch den intensiveren Schlaf, da Schlafmangel die Atrophien deutlich begünstigen und auch Melatonin bei ALS eine deutliche Wirkung zeigte. Dennoch bin ich nun der Meinung die Wirkung geht über die von Schlafmitteln hinaus. Ich habe dann etwas recherchiert und herausgefunden, dass Seroquel Histamine blockt und neuroprotektiv wirkt.

Studien zu Seroquel bei ALS

New kid on the block: does histamine get along with inflammation in amyotrophic lateral sclerosis?

Results from amyotrophic lateral sclerosis (ALS) patients and pre-clinical studies strongly suggest that systemic and CNS-intrinsic immune activation plays a central role in ALS pathogenesis. Microglial cells are emerging in this context as master regulators with a bi-functional role in the progression of the pathological response. They foster a pro-inflammatory setting through the production of cytotoxic cytokines and chemokines (M1 phenotype), after an aborted effort to sustain an anti-inflammatory environment for motor neurons through the release of beneficial cytokines and growth factors (M2 phenotype). In this review, we gather information meant to propose that histamine and ATP, which are released from mast cells, microglia and damaged neurons at sites of injury where they function as transmitters, have to be considered as new players in the ALS neuroinflammatory arena. After all, abnormal histamine and ATP signalling in the brain are already documented in neurodegenerative/neuroinflammatory conditions such as multiple sclerosis, Alzheimer and Parkinson’s disease and, at present, histamine- as well as ATP-related compounds are in clinical trial for these same pathologies. Concerning ALS, while emerging data are now available about purinergic mechanisms, the involvement of histamine is basically unexplored. The circumstantial evidence that we present here thus constitutes a solid background for formulating novel hypotheses, stimulating a scientific debate and, most of all, inspiring future research. We deem that a new potential role of histamine in the setting of ALS neuroinflammation might find a fertile ground where to thrive. ALS is still a disease without a cure: why not to play with a new kid on the block?

https://www.ncbi.nlm.nih.gov/pubmed/25714965

Acute and Chronic Treatments with Quetiapine Increase Mitochondrial Respiratory Chain Complex Activity in the Rat Brain.

Several studies have found that the molecular mechanisms of mitochondrial energy metabolism are impaired in major depressive disorder (MDD). Classic antidepressants and atypical antipsychotics can alter the function of enzymes involved in adenosine triphosphate (ATP) metabolism. Quetiapine is an atypical antipsychotic that, in addition to having a therapeutic benefit in treating MDD, appears to exert antioxidant and neuroprotective effects. Therefore, we aimed to evaluate the acute and chronic effects of quetiapine on the activity of enzyme complexes I to IV of the mitochondrial respiratory chain and creatine kinase (CK) in brain regions involved with MDD. After a single dose or serial injections over 14 days of quetiapine (20, 40, and 80 mg) were administered, isolates from the pre- frontal cortex, hippocampus, amygdala and nucleus accumbens were analyzed for enzyme activity levels. The enzyme activity varied according to the dose, brain region, and acute or chronic dosing protocols. In general, complexes I-III activity was increased, especially after acute administration. Acute administration also increased the activity of complex IV and CK in the amygdala while complex I was inhibited in the prefrontal cortex and nucleus accumbens. These results suggest that quetiapine produces an increase in respiratory chain complex activity, which may be underlying its efficacy against psychiatric disorders and neuronal damage.

https://www.ncbi.nlm.nih.gov/pubmed/26036973

Astrocyte-dependent protective effect of quetiapine on GABAergic neuron is associated with the prevention of anxiety-like behaviors in aging mice after long-term treatment.

Previous studies have demonstrated that quetiapine (QTP) may have neuroprotective properties; however, the underlying mechanisms have not been fully elucidated. In this study, we identified a novel mechanism by which QTP increased the synthesis of ATP in astrocytes and protected GABAergic neurons from aging-induced death. In 12-month-old mice, QTP significantly improved cell number of GABAegic neurons in the cortex and ameliorated anxiety-like behaviors compared to control group. Complimentary in vitro studies showed that QTP had no direct effect on the survival of aging GABAergic neurons in culture. Astrocyte-conditioned medium (ACM) pretreated with QTP (ACMQTP) for 24 h effectively protected GABAergic neurons against aging-induced spontaneous cell death. It was also found that QTP boosted the synthesis of ATP from cultured astrocytes after 24 h of treatment, which might be responsible for the protective effects on neurons. Consistent with the above findings, a Rhodamine 123 test showed that ACMQTP, not QTP itself, was able to prevent the decrease in mitochondrial membrane potential in the aging neurons. For the first time, our study has provided evidence that astrocytes may be the conduit through which QTP is able to exert its neuroprotective effects on GABAergic neurons. The neuroprotective properties of quetiapine (QTP) have not been fully understood. Here, we identify a novel mechanism by which QTP increases the synthesis of ATP in astrocytes and protects GABAergic neurons from aging-induced death in a primary cell culture model. In 12-month-old mice, QTP significantly improves cell number of GABAegic neurons and ameliorates anxiety-like behaviors. Our study indicates that astrocytes may be the conduit through which QTP exerts its neuroprotective effects on GABAergic neurons.

https://www.ncbi.nlm.nih.gov/pubmed/24862291

Neuroprotective Effects of Quetiapine on Neuronal Apoptosis Following Experimental Transient Focal Cerebral Ischemia in Rats

Quetiapine is already in clinical use and is a safe drug, in contrast to many substances that are used to prevent ischemia and are not normally used clinically. Our results and the literature data indicate that quetiapine could help both as a neuronal protector and to resolve neuropsychiatric problems caused by the ischemia in cerebral ischemia cases.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3772279/