scholarly journals Serotonin Regulation Of Energy Metabolism Of Mitochondria Of Various Organs Of Rats

2021 ◽  
Vol 3 (05) ◽  
pp. 116-122
Author(s):  
Nuriddin Nazhmiddinovich Soliev ◽  
◽  
Odiljon Shermatovich Boymatov ◽  
Keyword(s):  
Energy Metabolism ◽  
Respiratory Chain ◽  
Respiratory Function ◽  
Oxygen Molecule ◽  
The Brain

Serotonin reduces the respiratory function of the mitochondria of the brain, heart and liver of rats. Serotonin significantly reduces the transport of electrons from glutamate to the oxygen molecule along the respiratory chain relative to succinate. These changes lead to a slight increase in the oxidative efficiency of phosphorylation in the oxidation of glutamate in mitochondria.

In vitro effect of antipsychotics on brain energy metabolism parameters in the brain of rats

2013 ◽  
Vol 25 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Giselli Scaini ◽  
Natália Rochi ◽  
Meline O. S. Morais ◽  
Débora D. Maggi ◽  
Bruna T. De-Nês ◽  
...  
Keyword(s):  
Energy Metabolism ◽  
Respiratory Chain ◽  
Antipsychotic Drugs ◽  
Reaction Medium ◽  
Respiratory Chain Complexes ◽  
Posterior Cortex ◽  
Chain Complexes ◽  
Vitro Effect ◽  
The Brain

ObjectiveTypical and atypical antipsychotic drugs have been shown to have different clinical, biochemical and behavioural profiles. It is well described that impairment of metabolism, especially in the mitochondria, leads to oxidative stress and neuronal death and has been implicated in the pathogenesis of a number of diseases in the brain. In this context, we investigated the in vitro effect of antipsychotic drugs on energy metabolism parameters in the brain of rats.MethodsClozapine (0.1, 0.5 and 1.0 mg/ml), olanzapine (0.1, 0.5 and 1.0 mg/ml) and aripiprazole (0.05, 0.15 and 0.3 mg/ml) were suspended in buffer and added to the reaction medium containing rat tissue homogenates and the respiratory chain complexes, succinate dehydrogenase and creatine kinase (CK) activities were evaluated.ResultsOur results showed that olanzapine and aripriprazole increased the activities of respiratory chain complexes. On the other hand, complex IV activity was inhibited by clozapine, olanzapine and aripriprazole. CK activity was increased by clozapine at 0.5 and 1.0 mg/ml in prefrontal cortex, cerebellum, striatum, hippocampus and posterior cortex of rats. Moreover, olanzapine and aripiprazole did not affect CK activity.ConclusionIn this context, if the hypothesis that metabolism impairment is involved in the pathophysiology of neuropsychiatric disorders is correct and these results also occur in vivo, we suggest that olanzapine may reverse a possible diminution of metabolism.

scholarly journals Role of Natural Antioxidants on Neuroprotection and Neuroinflammation

Antioxidants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 608
Author(s):  
Domenico Nuzzo
Keyword(s):  
Reactive Oxygen Species ◽  
Energy Metabolism ◽  
Respiratory Chain ◽  
Reactive Oxygen ◽  
Natural Antioxidants ◽  
Oxygen Species

All cells continuously generate reactive oxygen species (ROS) through the respiratory chain during the energy metabolism process [...]

Age changes in enzymes of neuronal and microvascular energy metabolism in the brain of spontaneously hypertensive rats

1990 ◽  
Vol 109 (5) ◽  
pp. 682-685
Author(s):  
V. A. Sorokoumov ◽  
Yu. Ya. Kislyakov ◽  
E. L. Pugacheva ◽  
E. R. Barantsevich ◽  
V. A. Grantyn'
Keyword(s):  
Energy Metabolism ◽  
Spontaneously Hypertensive Rats ◽  
Age Changes ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
The Brain

scholarly journals The "selfish brain" hypothesis for metabolic abnormalities in bipolar disorder and schizophrenia

2012 ◽  
Vol 34 (3) ◽  
pp. 121-128 ◽  
Author(s):  
Rodrigo Barbachan Mansur ◽  
Elisa Brietzke
Keyword(s):  
Bipolar Disorder ◽  
Energy Metabolism ◽  
Energy Supply ◽  
Clinical Implications ◽  
Metabolic Abnormalities ◽  
Compensatory Mechanisms ◽  
High Prevalence ◽  
Brain Theory ◽  
The Brain ◽  
Brain Energy

Metabolic abnormalities are frequent in patients with schizophrenia and bipolar disorder (BD), leading to a high prevalence of diabetes and metabolic syndrome in this population. Moreover, mortality rates among patients are higher than in the general population, especially due to cardiovascular diseases. Several neurobiological systems involved in energy metabolism have been shown to be altered in both illnesses; however, the cause of metabolic abnormalities and how they relate to schizophrenia and BD pathophysiology are still largely unknown. The "selfish brain" theory is a recent paradigm postulating that, in order to maintain its own energy supply stable, the brain modulates energy metabolism in the periphery by regulation of both allocation and intake of nutrients. We hypothesize that the metabolic alterations observed in these disorders are a result of an inefficient regulation of the brain energy supply and its compensatory mechanisms. The selfish brain theory can also expand our understanding of stress adaptation and neuroprogression in schizophrenia and BD, and, overall, can have important clinical implications for both illnesses.

Mitochondrial respiratory chain activity in an animal model of mania induced by ouabain

2011 ◽  
Vol 23 (3) ◽  
pp. 106-111 ◽  
Author(s):  
Tiago P. Freitas ◽  
Gislaine T. Rezin ◽  
Daiane B. Fraga ◽  
Morgana Moretti ◽  
Julia S. Vieira ◽  
...  
Keyword(s):  
Animal Model ◽  
Prefrontal Cortex ◽  
Respiratory Chain ◽  
Rebound Effect ◽  
Mitochondrial Respiratory Chain ◽  
Face Validity ◽  
Mitochondrial Respiratory Chain Activity ◽  
Respiratory Chain Activity ◽  
The Brain ◽  
Mitochondrial Respiratory

Objectives: Bipolar disorder (BD) is a mental illness associated with higher rates of suicide. The present study aims to investigate the brain mitochondrial respiratory chain activity in an animal model of mania induced by ouabain.Methods: Adult male Wistar rats received a single intracerebroventricular administration of ouabain (10−3 and 10−2 M) or vehicle. Locomotor activity was measured using the open field test. Mitochondrial respiratory chain activity was measured in the brain of rats 1 h and 7 days after ouabain administration.Results: Our results showed that spontaneous locomotion was increased 1 h and 7 days after ouabain administration. Complexes I, III and IV activities were increased in the prefrontal cortex, hippocampus and striatum immediately after the administration of ouabain, at the concentration of 10−3 and 10−2 M. Moreover, complex II activity was increased only in the prefrontal cortex at the concentration of 10−2 M. On the other hand, no significant alterations were observed in complex I activity 7 days after ouabain administration. However, an increase in complexes II, III and IV activities was observed only in the prefrontal cortex at the concentration of 10−2 M.Conclusion: Our findings suggest an increase in the activities of mitochondrial respiratory chain in this model of mania. A possible explanation is that these findings occur as a rebound effect trying to compensate for a decrease of ATP deprivation in BD. The present findings suggest that this model may present good face validity and a limitation in construct validity.

scholarly journals Aspartoacylase Supports Oxidative Energy Metabolism during Myelination

2012 ◽  
Vol 32 (9) ◽  
pp. 1725-1736 ◽  
Author(s):  
Jeremy S Francis ◽  
Louise Strande ◽  
Vladamir Markov ◽  
Paola Leone
Keyword(s):  
Energy Metabolism ◽  
Postnatal Development ◽  
Strong Association ◽  
Canavan Disease ◽  
Lipid Synthesis ◽  
Systematic Analysis ◽  
Early Postnatal Development ◽  
Neuronal Viability ◽  
Oxidative Energy Metabolism ◽  
The Brain

The inherited leukodystrophy Canavan disease arises due to a loss of the ability to catabolize N-acetylaspartic acid (NAA) in the brain and constitutes a major point of focus for efforts to define NAA function. Accumulation of noncatabolized NAA is diagnostic for Canavan disease, but contrasts with the abnormally low NAA associated with compromised neuronal integrity in a broad spectrum of other clinical conditions. Experimental evidence for NAA function supports a role in white matter lipid synthesis, but does not explain how both elevated and lowered NAA can be associated with pathology in the brain. We have undertaken a systematic analysis of postnatal development in a mouse model of Canavan disease that delineates development and pathology by identifying markers of oxidative stress preceding oligodendrocyte loss and dysmyelination. These data suggest a role for NAA in the maintenance of metabolic integrity in oligodendrocytes that may be of relevance to the strong association between NAA and neuronal viability. N-acetylaspartic acid is proposed here to support lipid synthesis and energy metabolism via the provision of substrate for both cellular processes during early postnatal development.

Biochemical Effects of Cerebral Ischemia: Relevance To Migraine

Cephalalgia ◽  
1985 ◽  
Vol 5 (2_suppl) ◽  
pp. 35-42 ◽  
Author(s):  
KMA Welch ◽  
JA Helpern ◽  
JR Ewing ◽  
WM Robertson ◽  
G D'Andrea
Keyword(s):  
Energy Metabolism ◽  
Cerebral Ischemia ◽  
Spreading Depression ◽  
Metabolic Depression ◽  
Ischemia And Reperfusion ◽  
Phosphate Metabolism ◽  
Biochemical Effects ◽  
The Brain ◽  
Intracranial Circulation

Although decreased CBF has now been reported during the prodrome of migraine, the cause of the decreased flow is still unknown. It is particularly unclear whether these phenomena are related to vasospasm and “steal” between the extracranial and intracranial circulation or to the spreading depression of Leao and the accompanying metabolic depression. In the present paper, metabolic changes in the brain during ischemia and reperfusion are reviewed and compared with CNS biochemical changes during migraine attack. In addition, the technique of Topical Magnetic Resonance (TMR) as applied to the in vivo study of energy phosphate metabolism in extracranial tissues and brain is described and the potential of this technique to evaluate shifts in energy metabolism and pH in stroke and migraine is discussed.

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