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Condition: Mitochondrial Disease
Nutrition: Calcium

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Total 67 results found since Jan 2013.

Mitochondrial calcium exchange in physiology and disease
Physiol Rev. 2021 Oct 26. doi: 10.1152/physrev.00041.2020. Online ahead of print.ABSTRACTThe uptake of calcium into and extrusion of calcium from the mitochondrial matrix is a fundamental biological process that has critical effects on cellular metabolism, signaling, and survival. Disruption of mitochondrial calcium (mCa2+) cycling is implicated in numerous acquired diseases such as heart failure, stroke, neurodegeneration, diabetes, and cancer, and is genetically linked to several inherited neuromuscular disorders. Understanding the mechanisms responsible for mCa2+ exchange therefore holds great promise for the treatment ...
Source: Physiological Reviews - October 26, 2021 Category: Physiology Authors: Joanne F Garbincius John W Elrod Source Type: research

Uncoupling Protein 2 as a pathogenic determinant and therapeutic target in cardiovascular and metabolic diseases
Curr Neuropharmacol. 2021 Apr 20. doi: 10.2174/1570159X19666210421094204. Online ahead of print.ABSTRACTUncoupling protein 2 (UCP2) is a mitochondrial protein that acts as an anion carrier. It is involved in the regulation of several processes including mitochondrial membrane potential, generation of reactive oxygen species within the inner mitochondrial membrane and calcium homeostasis. UCP2 expression can be regulated at different levels: genetic (gene variants), transcriptional [by peroxisome proliferator-activated receptors (PPARs) and microRNAs], and post-translational. Experimental evidence indicates that activation ...
Source: Current Neuropharmacology - April 22, 2021 Category: Drugs & Pharmacology Authors: Rosita Stanzione Maurizio Forte Maria Cotugno Franca Bianchi Simona Marchitti Carla Letizia Busceti Francesco Fornai Speranza Rubattu Source Type: research

Role of Calcium Homeostasis in Ischemic Stroke: A Review.
Abstract Stroke is the second most common cause of death worldwide. It occurs due to the insufficient supply of oxygen-rich blood to the brain. It is a complex disease with multiple associated risk factors including smoking, alcoholism, age, sex, ethnicity, etc. Calcium ions are known to play a vital role in cell death pathways, which is a ubiquitous intracellular messenger during and immediately after an ischemic period. Disruption in normal calcium hemostasis is known to be a major initiator and activator of the ischemic cell death pathway. Under Ischemic stroke conditions, glutamate is released from the neurons...
Source: CNS and Neurological Disorders Drug Targets - February 12, 2021 Category: Drugs & Pharmacology Authors: Ludhiadch A, Sharma R, Muriki A, Munshi A Tags: CNS Neurol Disord Drug Targets Source Type: research

Coupling of NMDA receptors and TRPM4 guides discovery of unconventional neuroprotectants
Excitotoxicity induced by NMDA receptors (NMDARs) is thought to be intimately linked to high intracellular calcium load. Unexpectedly, NMDAR-mediated toxicity can be eliminated without affecting NMDAR-induced calcium signals. Instead, excitotoxicity requires physical coupling of NMDARs to TRPM4. This interaction is mediated by intracellular domains located in the near-membrane portions of the receptors. Structure-based computational drug screening using the interaction interface of TRPM4 in complex with NMDARs identified small molecules that spare NMDAR-induced calcium signaling but disrupt the NMDAR/TRPM4 complex. These i...
Source: ScienceNOW - October 8, 2020 Category: Science Authors: Yan, J., Bengtson, C. P., Buchthal, B., Hagenston, A. M., Bading, H. Tags: Neuroscience, Online Only r-articles Source Type: news

Building a Bridge Between NMDAR-Mediated Excitotoxicity and Mitochondrial Dysfunction in Chronic and Acute Diseases.
Abstract Glutamate is the major excitatory neurotransmitter in the brain, and it is widely accepted to play a role in synaptic plasticity and excitotoxic cell death. Glutamate binds to several receptors, including ionotropic N-methyl-D-Aspartate receptor (NMDAR), which is essential in synaptic plasticity and excitotoxicity. This receptor is a calcium channel that is located in synaptic and extrasynaptic sites, triggering different signalling cascades in each case. The calcium entry through extrasynaptic NMDARs is linked to calcium overload in the mitochondria in neurons in vitro. The mitochondria, besides their ro...
Source: Cellular and Molecular Neurobiology - July 21, 2020 Category: Cytology Authors: Mira RG, Cerpa W Tags: Cell Mol Neurobiol Source Type: research

Theaflavic acid from black tea protects PC12 cells against ROS-mediated mitochondrial apoptosis induced by OGD/R via activating Nrf2/ARE signaling pathway
AbstractCerebral ischemic stroke is a severe disease afflicting people worldwide. Phytochemicals play a pivotal role in the discovery of novel therapeutic approaches for the prevention of ischemic stroke. In our continual search for bioactive natural products for the treatment of ischemic stroke, we have evaluated the protective effects of theaflavic acid (TFA) from black tea using PC12 cells injured by oxygen and glucose deprivation/restoration (OGD/R), and investigated the possible mechanisms. The results showed that TFA can protect PC12 cells against OGD/R through increasing cell viability and decreasing intracellular l...
Source: Journal of Natural Medicines - June 20, 2019 Category: Drugs & Pharmacology Source Type: research

NAMPT as a Dedifferentiation-Inducer Gene: NAD+ as Core Axis for Glioma Cancer Stem-Like Cells Maintenance
Conclusion and Perspectives Gliomas are the most prevalent primary brain cancer in adults and include a broad category of tumors including astrocytoma, oligodendroglioma, and GBM. Regardless of tumor aggressiveness, malignancy, and infiltration, these glia-derived tumors rarely exceed a median survival time of 12–14 months. Driven by the infiltrative nature of these tumors, the clinical approach is difficult and relapses often occur with fatal consequences. These unsuccessful attempts to control glioma's fate have fostered research looking for more effective therapies. (GSCs) are a small subset of CD133&#...
Source: Frontiers in Oncology - May 2, 2019 Category: Cancer & Oncology Source Type: research

Transcriptomic Analysis of Mecp2 Mutant Mice Reveals Differentially Expressed Genes and Altered Mechanisms in Both Blood and Brain
This study was carried out in accordance with the recommendations of National Animal Welfare Authority, Ireland. The protocol was approved by the Animal Ethical Committee Trinity College Dublin and HPRA.Author ContributionsAS performed the experiments and wrote the paper; KH provided assistance in the design and analysis of the RNAseq experiment; DT contributed to sample extraction and establishment of the colony; and DT and MG designed and supervised all the parts of the research and the writing of the manuscript.FundingThe study was funded by the Wellcome Trust Grant WT079408/C/06/Z issued to MG, and by an SFI FN Funded ...
Source: Frontiers in Psychiatry - April 29, 2019 Category: Psychiatry Source Type: research

Osteoporosis and Sarcopenia Increase Frailty Syndrome in the Elderly
Conclusions World population is aging and the increase in life expectancy is often unhealthy. In particular, musculoskeletal aging, which leads to sarcopenia and osteoporosis, has several causes such as changes in body composition, inflammation, and hormonal imbalance. Sarcopenia, osteoporosis, and more frequently, sarcopenic obesity are commonly associated with aging and frequently closely linked each other, often leading to the development of a frailty syndrome. Frailty syndrome favors an increased risk of loss function in daily activities, for cardiovascular diseases, cancers, falls, and mortality. As the number of eld...
Source: Frontiers in Endocrinology - April 23, 2019 Category: Endocrinology Source Type: research

Shengui Sansheng San Ameliorates Cerebral Energy Deficiency via Citrate Cycle After Ischemic Stroke
Conclusion In summary, SSS extraction significantly ameliorates cerebral energy metabolism via boosting citrate cycle, which mainly embodies the enhancements of blood glucose concentration, glucose and lactate transportation and glucose utilization, as well as the regulations of relative enzymes activities in citrate cycle. These ameliorations ultimately resulted in numerous ATP yield after stroke, which improved neurological function and infarcted volume. Collectively, it suggests that SSS extraction has exerted advantageous effect in the treatment of cerebral ischemia. Ethics Statement All animal operations were accor...
Source: Frontiers in Pharmacology - April 22, 2019 Category: Drugs & Pharmacology Source Type: research

Cryptotanshinone Attenuates Oxygen-Glucose Deprivation/ Recovery-Induced Injury in an in vitro Model of Neurovascular Unit
Conclusions Despite the above limitations, we indicate that the protective mechanism of CTs against OGD/R damage might exert via inhibiting neuron apoptosis and attenuating BBB disruption. Furthermore, we also clarified that CTs inhibited neuronal apoptosis possibly by blocking the activation of MAPK signaling pathways, and CTs alleviating BBB disruption may associated with the regulation of TJPs and MMP-9 in our experiment. Accordingly, CTs will represent a novel and potent candidate for the treatment of CIRI in the future. Ethics Statement This study was carried out in accordance with the recommendations of China�...
Source: Frontiers in Neurology - April 17, 2019 Category: Neurology Source Type: research