Abstract:
:Optic atrophy 1 (OPA1)-related mitochondrial fusion and mitophagy are vital to sustain mitochondrial homeostasis under stress conditions. However, no study has confirmed whether OPA1-related mitochondrial fusion/mitophagy is activated by melatonin and, consequently, attenuates cardiomyocyte death and mitochondrial stress in the setting of cardiac ischemia-reperfusion (I/R) injury. Our results indicated that OPA1, mitochondrial fusion, and mitophagy were significantly repressed by I/R injury, accompanied by infarction area expansion, heart dysfunction, myocardial inflammation, and cardiomyocyte oxidative stress. However, melatonin treatment maintained myocardial function and cardiomyocyte viability, and these effects were highly dependent on OPA1-related mitochondrial fusion/mitophagy. At the molecular level, OPA1-related mitochondrial fusion/mitophagy, which was normalized by melatonin, substantially rectified the excessive mitochondrial fission, promoted mitochondria energy metabolism, sustained mitochondrial function, and blocked cardiomyocyte caspase-9-involved mitochondrial apoptosis. However, genetic approaches with a cardiac-specific knockout of OPA1 abolished the beneficial effects of melatonin on cardiomyocyte survival and mitochondrial homeostasis in vivo and in vitro. Furthermore, we demonstrated that melatonin affected OPA1 stabilization via the AMPK signaling pathway and that blockade of AMPK repressed OPA1 expression and compromised the cardioprotective action of melatonin. Overall, our results confirm that OPA1-related mitochondrial fusion/mitophagy is actually modulated by melatonin in the setting of cardiac I/R injury. Moreover, manipulation of the AMPK-OPA1-mitochondrial fusion/mitophagy axis via melatonin may be a novel therapeutic approach to reduce cardiac I/R injury.
journal_name
J Pineal Resjournal_title
Journal of pineal researchauthors
Zhang Y,Wang Y,Xu J,Tian F,Hu S,Chen Y,Fu Zdoi
10.1111/jpi.12542subject
Has Abstractpub_date
2019-03-01 00:00:00pages
e12542issue
2eissn
0742-3098issn
1600-079Xjournal_volume
66pub_type
杂志文章abstract::N-acetylserotonin methyltransferase (ASMT) is the final enzyme in a biosynthetic pathway that produces melatonin. ASMT may play a rate-limiting role in the production of this bioactive molecule in plants. There are three ASMT genes (ASMT1-ASMT3) in the rice genome, but only ASMT1 has been functionally characterized. A...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/jpi.12088
更新日期:2013-11-01 00:00:00
abstract::Melatonin is a powerful scavenger of oxygen free radicals. In humans, melatonin is rapidly transferred from the maternal to the fetal circulation. To investigate whether or not maternal melatonin administration can protect the fetal rat brain from radical-induced damage by increasing the activities of antioxidant enzy...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1034/j.1600-079x.2001.280204.x
更新日期:2000-03-01 00:00:00
abstract::Ischemia/reperfusion injury (IRI) is harmful to the cardiovascular system and causes mitochondrial oxidative stress. Numerous data indicate that the JAK2/STAT3 signaling pathway is specifically involved in preventing myocardial IRI. Melatonin has potent activity against IRI and may regulate JAK2/STAT3 signaling. This ...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/jpi.12070
更新日期:2013-10-01 00:00:00
abstract::The effect of melatonin was evaluated on three phosphatidylcholine-based membrane models. Changes in liposome dynamics were monitored by fluorescence, following the response of the probe merocyanine-540, as well as by differential scanning calorimetry (DSC). Langmuir monolayers were investigated using molecular area m...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2010.00782.x
更新日期:2010-09-01 00:00:00
abstract::The effects of noradrenergic and cholinergic receptor agonists on intracellular Ca2+ concentration ([Ca2+]i) in single dissociated rat pineal cells were investigated by microfluorimetric measurements in Fura-2 acetoxymethyl ester (Fura-2/AM) loaded cells. Noradrenaline (NA) evoked characteristic biphasic increments of...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1996.tb00266.x
更新日期:1996-08-01 00:00:00
abstract::Day and nighttime melatonin production in the pineal gland was compared in normal and cardiomyopathic (polydystrophic) adult male Syrian hamsters. These strains of hamsters were selected for comparison because the cardiomyopathetic hamster displays a deficient transmembrane Ca(2+)-pump in a number of tissues, and intr...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1991.tb00472.x
更新日期:1991-10-01 00:00:00
abstract::Our daily rhythmicity is controlled by a circadian clock with a specific set of genes located in the suprachiasmatic nucleus in the hypothalamus. Mast cells (MCs) are major effector cells that play a protective role against pathogens and inflammation. MC distribution and activation are associated with the circadian rh...
journal_title:Journal of pineal research
pub_type: 杂志文章,评审
doi:10.1111/jpi.12699
更新日期:2020-10-05 00:00:00
abstract::Melatonin, a molecule produced in the pineal gland and retina of vertebrates, plays a major role in day-night circadian rhythms and other physiological processes, including the immune responses. Because little is known in this respect in fish, we have evaluated the in vivo role of melatonin in the main innate immune a...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2008.00557.x
更新日期:2008-08-01 00:00:00
abstract::Experiments were designed to test the hypothesis that the pineal gland mediates the effects of changing day length and thereby synchronizes implantation within the population of spotted skunks. Intact, sham-superior cervical ganglionectomized (SCGx), SCGx, and SCGx/bilateral orbitally enucleated (B1) pregnant skunks w...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1986.tb00720.x
更新日期:1986-01-01 00:00:00
abstract::The effect of melatonin on thrombin-induced [3H]-arachidonic acid (AA) metabolism to cyclooxygenase derivatives was determined in platelets obtained from normal volunteers at 0830 and 2030 h. Percent conversion of radioactive AA was generally greater at 2030 h than at 0830 h for every cyclooxygenase derivative analyze...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1991.tb00465.x
更新日期:1991-10-01 00:00:00
abstract::The aim of this study was to compare the circadian control of melatonin production in teleosts. To do so, the effects of ophthalmectomy on circulating melatonin rhythms were studied along with ex vivo pineal culture in six different teleosts. Results strongly suggested that the circadian control of melatonin productio...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2007.00480.x
更新日期:2007-11-01 00:00:00
abstract::The oncostatic effects of melatonin on the mammary gland have been studied in transgenic mice carrying the N-ras proto-oncogene under the control of the MMTV-LTR. Female (4-week-old) virgin mice with positive transgenic pedigrees were injected with melatonin (200 micrograms/mouse/ day, five times a week) or vehicle la...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1997.tb00308.x
更新日期:1997-03-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) is one of the most common cancers and its incidence is increasing worldwide. Melatonin, an indoleamine hormone, exerts anti-oxidant, immunomodulatory, anti-aging, and antitumor effects. Previous studies have shown that melatonin can act through specific receptors, including MT(1), MT(2),...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2009.00719.x
更新日期:2009-11-01 00:00:00
abstract::A study was carried out to determine the possible influence of melatonin on the proliferation of Kirkman-Robbins hepatoma cells in Syrian hamsters, both in vivo and in vitro. A highly significant inhibition of the proliferation of transplanted hepatoma cells was observed in vivo following melatonin administration (pro...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1992.tb00063.x
更新日期:1992-10-01 00:00:00
abstract::Preterm delivery is the leading cause of neonatal mortality and contributes to delayed physical and cognitive development in children. At present, there is no efficient therapy to prevent preterm labor. A large body of evidence suggests that intra-amniotic infections may be a significant and potentially preventable ca...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/jpi.12108
更新日期:2014-03-01 00:00:00
abstract::Urotoxicity is one of the major problems associated with cyclophosphamide (CP) chemotherapy in cancer patients. Melatonin is a potent antioxidant and reduces CP-induced urotoxicity. However, the molecular mechanisms of protection offered by melatonin are not yet clear. The present study investigated the role of nuclea...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2010.00756.x
更新日期:2010-05-01 00:00:00
abstract::Classical anticancer therapies often are ineffective in patients with malignant glioma who have a survival of <1 year. Our previous studies showed a potent inhibitory effect of melatonin on glioma cell proliferation. This effect seems to be mediated by the well-known antioxidant properties of this molecule and the neg...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2007.00468.x
更新日期:2007-10-01 00:00:00
abstract::We have studied the effect of the administration of two doses of melatonin (melatonin 100 and melatonin 200 microg/kg bw) on diabetes and oxidative stress experimentally induced by the injection of streptozotocin (STZ) in female Wistar rats. STZ was injected as a single dose (60 mg/kg i.p. in buffered citrate solution...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1998.tb00545.x
更新日期:1998-09-01 00:00:00
abstract::Melatonin is produced following circadian rhythm with high levels being released at night and has been implicated in the regulation of physiological processes in major tissues, including the pancreas. The aim of our study was to examine the effects of melatonin on intracellular free Ca(2+) concentration ([Ca(2+) ](c))...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2010.00790.x
更新日期:2010-10-01 00:00:00
abstract::The incidence of chronic obstructive pulmonary disease (COPD) has substantially increased in recent decade. Cigarette smoke (CS) is the most important risk factor in the development of COPD. In this study, we investigated the effects of melatonin on the development of COPD using a CS and lipopolysaccharide (LPS)-induc...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/jpi.12192
更新日期:2015-01-01 00:00:00
abstract::Previous human studies have indicated that daytime melatonin levels increase when the organism is subjected to the stress of fasting and exercise. Melatonin, epinephrine, and norepinephrine levels were measured during a mock run and in the course of treadmill exercise performed before (T-1), during (T-2), and followin...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1989.tb00666.x
更新日期:1989-01-01 00:00:00
abstract::Antioxidant activity of a molecule is attributed to various mechanisms such as prevention of chain initiation, binding of transition metal ion catalysts and decomposition of peroxides. This study was aimed at evaluating the metal chelating and hydrogen peroxide (H2O2) scavenging activity of melatonin. The metal chelat...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1034/j.1600-079x.2003.00042.x
更新日期:2003-05-01 00:00:00
abstract::Oxidative stress is reported as one of the most widely accepted mechanisms of maneb (MB)- and paraquat (PQ)-induced nigrostriatal dopaminergic neurodegeneration leading to the Parkinson's disease (PD) phenotype. The study investigated the effects of silymarin, an antioxidant of plant origin, and melatonin, an indoleam...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2010.00819.x
更新日期:2011-03-01 00:00:00
abstract::Djungarian hamsters kept in long photoperiod (16:8 L:D) were injected daily at 0800, 1200, or 1600 with 25 micrograms of melatonin. During 90 days of treatment, body weight and fur coloration were checked at weekly intervals, and at the end of the treatment the reproductive status of the hamsters and their thermoregul...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1985.tb00719.x
更新日期:1985-01-01 00:00:00
abstract::The distribution of 14C-Melatonin (14C-MT) after systemic injection was studied in the plasma, cerebrospinal fluid (CSF), and brain of rats. Chromatographic analysis (thin-layer chromatography and high-performance liquid chromatography) indicated that the radioactivity from biological samples taken at various times fo...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1988.tb00787.x
更新日期:1988-01-01 00:00:00
abstract::Melatonin, the major secretory product of the pineal gland, is in focus of many research areas because of its ability to scavenge free oxygen radicals and thereby protect cells and tissues from radical damage. Some studies suggest melatonin may be a possible therapeutic agent with potential clinical applications again...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1034/j.1600-079x.2002.01846.x
更新日期:2002-08-01 00:00:00
abstract::The effect of melatonin administration on nerve growth factor (NGF) was studied in the submandibular glands of adult Swiss male mice. Melatonin injection, at 1 microg daily for 30 days, resulted in an increase in the NGF content as detected by immunohistochemistry. The submandibular gland weight and the area of the gr...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079x.1998.tb00369.x
更新日期:1998-03-01 00:00:00
abstract::Melatonin has shown particular promise as a neuroprotective agent to prevent motoneuron death in animal models of both amyotrophic lateral sclerosis (ALS) and spinal cord injuries (SCI). However, an understanding of the roles of endogenous melatonin receptors including MT1, MT2, and orphan G-protein receptor 50 (GPR50...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2012.01022.x
更新日期:2013-01-01 00:00:00
abstract::Methamphetamine (METH) is a potent psychostimulant drug that may cause neuronal cell degeneration. The underlying mechanisms of METH-induced neuronal toxicity remains poorly understood. In this study, we investigated an important role of calpain-dependent cascades in methamphetamine-induced toxicity in human dopaminer...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2009.00731.x
更新日期:2010-03-01 00:00:00
abstract::Doxorubicin (DOX) and Trastuzumab (TRAST) are effective agents for the treatment of many neoplastic diseases. Cardiotoxicity is a major side effect of these drugs and limit their use. In this study, the possible protective effects of melatonin (MEL), mercaptoethylguanidine (MEG), or N-(3-(aminomethyl) benzyl) acetamid...
journal_title:Journal of pineal research
pub_type: 杂志文章
doi:10.1111/j.1600-079X.2010.00818.x
更新日期:2011-01-01 00:00:00