journal
MENU ▼
Read by QxMD icon Read
search

Journal of Pineal Research

journal
https://www.readbyqxmd.com/read/27889913/long-term-melatonin-treatment-delays-ovarian-aging
#1
Hiroshi Tamura, Mai Kawamoto, Shun Sato, Isao Tamura, Ryo Maekawa, Toshiaki Taketani, Hiromi Aasada, Eiichi Takaki, Akira Nakai, Russel J Reiter, Norihiro Sugino
Ovarian aging is characterized by gradual declines in oocyte quantity and quality. Melatonin is considered an anti-aging agent due to its cytoprotective actions as an antioxidant. The present study examined whether long-term melatonin treatment would delay ovarian aging in mice. Female ICR mice (10 weeks old) were given melatonin-containing water (100 μg/ml; melatonin) or water only until 43 weeks of age. Their oocytes were recovered from the oviduct, and in vitro fertilization was performed. The ovaries were used for a histological analysis of the number of follicles...
November 27, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27865009/melatonin-synergizes-the-chemotherapeutic-effect-of-5-fluorouracil-in-colon-cancer-by-suppressing-pi3k-akt-and-nf-%C3%AE%C2%BAb-inos-signaling-pathways
#2
Yue Gao, Xiangsheng Xiao, Changlin Zhang, Wendan Yu, Wei Guo, Zhifeng Zhang, Zhenglin Li, Xu Feng, Jiaojiao Hao, Kefang Zhang, Bingyi Xiao, Miao Chen, Wenlin Huang, Shunbin Xiong, Xiaojun Wu, Wuguo Deng
5-Fluorouracil (5-FU) is one of the most commonly used chemotherapeutic agents in colon cancer treatment, but has a narrow therapeutic index limited by its toxicity. Melatonin exerts anti-tumor activity in various cancers, but it has never been combined with 5-FU as an anti-colon cancer treatment to improve the chemotherapeutic effect of 5-FU. In this study, we assessed such combinational use in colon cancer and investigated if melatonin could synergize the anti-tumor effect of 5-FU. We found that melatonin significantly enhanced the 5-FU-mediated inhibition of cell proliferation, colony formation, cell migration and invasion in colon cancer cells...
November 19, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27862280/melatonin-is-required-for-h2-o2-and-no-mediated-defense-signaling-through-mapkkk3-and-oxi1-in-arabidopsis-thaliana
#3
Hyoung Yool Lee, Kyoungwhan Back
Melatonin influences plant innate immunity through the mitogen-activated protein kinase (MAPK) pathway. However, the most upstream MAPK component in melatonin signaling and the dependence of generation of a reactive oxygen species (ROS) burst on melatonin synthesis and signaling remain unclear. In this study, treatment of several mekk (alias mapkkk)-knockout Arabidopsis mutants with melatonin revealed that the MAPKKK3 and OXI1 (oxidative signal-inducible1) kinases are responsible for triggering melatonin-induced defense signaling pathways...
November 18, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27862268/novel-protective-role-of-nuclear-melatonin-receptor-ror%C3%AE-in-diabetic-cardiomyopathy
#4
Yichao Zhao, Longwei Xu, Song Ding, Nan Lin, Qingqi Ji, Lingchen Gao, Yuanyuan Su, Jun Pu, Ben He
Diabetic cardiomyopathy is a major complication that significantly contributes to morbidity and mortality in diabetics with few therapies. Moreover, anti-diabetic drugs reported inconsistent or even adverse cardiovascular effects, suggesting it is important to exploit novel therapeutic targets against diabetic cardiomyopathy. Here, we observed that the nuclear melatonin receptor, the retinoic acid-related orphan receptor α (RORα), was downregulated in diabetic hearts. By utilizing a mouse line with RORα disruption, we demonstrated that RORα deficiency led to significantly augmented diastolic dysfunction and cardiac remodeling induced by diabetes...
November 18, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27763686/melatonin-and-the-pathologies-of-weakened-or-dysregulated-circadian-oscillators
#5
Rüdiger Hardeland
Dynamic aspects of melatonin's actions merit increasing future attention. This concerns particularly entirely different effects in senescent, weakened oscillators and in dysregulated oscillators of cancer cells that may be epigenetically blocked. This is especially obvious in the case of sirtuin 1 (SIRT1) which is upregulated by melatonin in aged tissues, but strongly downregulated in several cancer cells. These findings are not at all controversial, but are explained on the basis of divergent changes in weakened and dysregulated oscillators...
October 20, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27753144/melatonin-rescues-cardiac-thioredoxin-system-during-ischemia-reperfusion-injury-in-acute-hyperglycemic-state-by-restoring-notch1-hes1-akt-signaling-in-a-membrane-receptor-dependent-manner
#6
Liming Yu, Chongxi Fan, Zhi Li, Jian Zhang, Xiaodong Xue, Yinli Xu, Guolong Zhao, Yang Yang, Huishan Wang
Stress hyperglycemia is commonly observed in patients suffering from ischemic heart disease. It not only worsens cardiovascular prognosis but also attenuates the efficacies of various cardioprotective agents. This study aimed to investigate the protective effect of melatonin against myocardial ischemia-reperfusion (MI/R) injury in acute hyperglycemic state with a focus on Notch1/Hes1/Akt signaling and intracellular thioredoxin (Trx) system. Sprague-Dawley rats were subjected to MI/R surgery and high glucose (HG, 500 g/L) infusion (4 ml/kg/h) to induce temporary hyperglycemia...
October 18, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27736028/effect-of-intravenous-and-intracoronary-melatonin-as-an-adjunct-to-primary-percutaneous-coronary-intervention-for-acute-st-elevation-myocardial-infarction-results-of-the-melatonin-adjunct-in-the-acute-myocardial-infarction-treated-with-angioplasty-maria-trial
#7
Alberto Dominguez-Rodriguez, Pedro Abreu-Gonzalez, Jose M de la Torre-Hernandez, Julia Gonzalez-Gonzalez, Tamara Garcia-Camarero, Luciano Consuegra-Sanchez, Maria Del Mar Garcia-Saiz, Ana Aldea-Perona, Tirso Virgos-Aller, Agueda Azpeitia, Russel J Reiter
The MARIA randomized trial evaluated the efficacy and safety of melatonin for the reduction of reperfusion injury in patients undergoing revascularization for ST-elevation myocardial infarction (STEMI). This was a prespecified interim analysis. A total of 146 patients presenting with STEMI within 6 hours of chest pain onset were randomized to receive intravenous and intracoronary melatonin (n=73) or placebo (n=73) during primary pecutaneous coronary intervention (PPCI). Primary endpoint was myocardial infarct size as assessed by magnetic resonance imaging (MRI) at 6±2 days...
October 13, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27736013/igfbp3-and-mapk-erk-signaling-mediates-melatonin-induced-antitumor-activity-in-prostate-cancer
#8
Juan C Mayo, David Hevia, Isabel Quiros-Gonzalez, Aida Rodriguez-Garcia, Pedro Gonzalez-Menendez, Vanesa Cepas, Iván Gonzalez-Pola, Rosa M Sainz
Treatment of prostate cancer (PCa), a leading cause of cancer among males, lacks successful strategies especially in advanced, hormone-refractory stages. Some clinical studies have shown an increase in neuroendocrine-like cells parallel to the tumor progression but their exact role is a matter of debate. The prostate is a well-known target for melatonin, which reduces PCa cells proliferation and induces neuroendocrine differentiation. To evaluate the mechanisms underlying the indole effects on neuroendocrine differentiation and its impact on PCa progression, we used a cell culture model (LNCaP) and a murine model (TRAMP)...
October 13, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27736010/melatonin-enhances-survival-and-preserves-functional-integrity-of-stem-cells-a-review
#9
Mel S Lee, Tsung-Cheng Yin, Pei-Hsun Sung, John Y Chiang, Cheuk-Kwan Sun, Hon-Kan Yip
Despite state-of-the-art pharmaceutical regimens, continuous improvements in diagnostic techniques as well as refinements in equipment and interventional procedures, many diseases remain refractory to conventional therapies. Recent advances in stem cell (SC) biology have opened an avenue to exploring its therapeutic potential in various disease entities, especially those that are ischemia-related and refractory to conventional treatment. A number of experimental studies and clinical trials have already demonstrated promising outcomes...
October 13, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27706852/cancer-metastasis-mechanisms-of-inhibition-by-melatonin
#10
Shih-Chi Su, Ming-Ju Hsieh, Wei-En Yang, Wen-Hung Chung, Russel J Reiter, Shun-Fa Yang
Melatonin is a naturally occurring molecule secreted by the pineal gland and known as a gatekeeper of circadian clocks. Mounting evidence indicates that melatonin, employing multiple and interrelated mechanisms, exhibits a variety of oncostatic properties in a myriad of tumors during different stages of their progression. Tumor metastasis, which commonly occurs at the late stage is responsible for the majority of cancer deaths; metastases lead to the development of secondary tumors distant from a primary site...
October 5, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27706848/melatonin-attenuates-post-myocardial-infarction-injury-via-increasing-tom70-expression
#11
Hai-Feng Pei, Juan-Ni Hou, Fei-Peng Wei, Qiang Xue, Fan Zhang, Cheng-Fei Peng, Yi Yang, Yue Tian, Juan Feng, Jin Du, Lei He, Xiu-Chuan Li, Er-He Gao, De Li, Yong-Jian Yang
Mitochondrial dysfunction leads to reactive oxygen species (ROS) overload, exacerbating injury in myocardial infarction (MI). As a receptor for translocases in the outer mitochondrial membrane (Tom) complex, Tom70 has an unknown function in MI, including in melatonin-induced protection against MI injury. We delivered specific small interfering RNAs against Tom70 or lentivirus vectors carrying Tom70a sequences into the left ventricles of mice or to cultured neonatal murine ventricular myocytes (NMVMs). At 48 h post-transfection, the left anterior descending coronary arteries of mice were permanently ligated, while the NMVMs underwent continuous hypoxia...
October 5, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27696525/melatonin-alleviates-post-infarction-cardiac-remodeling-and-dysfunction-by-inhibiting-mst1
#12
Jianqiang Hu, Lei Zhang, Yang Yang, Yanjie Guo, Yanhong Fan, Mingming Zhang, Wanrong Man, Erhe Gao, Wei Hu, Russel J Reiter, Haichang Wang, Dongdong Sun
Melatonin reportedly protects against several cardiovascular diseases including ischemia/reperfusion (I/R), atherosclerosis and hypertension. The present study investigated the effects and mechanisms of melatonin on cardiomyocyte autophagy, apoptosis and mitochondrial injury in the context of MI. We demonstrated that melatonin significantly alleviated cardiac dysfunction after MI. Four weeks after MI, echocardiography and Masson staining indicated that melatonin notably mitigated adverse left ventricle remodeling...
October 1, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27696512/melatonin-prevents-deregulation-of-the-sphingosine-kinase-sphingosine-1-phosphate-signaling-pathway-in-a-mouse-model-of-diethylnitrosamine-induced-hepatocellular-carcinoma
#13
Diana I Sánchez, Bárbara González-Fernández, Beatriz San-Miguel, Juan Ortiz de Urbina, Irene Crespo, Javier González-Gallego, María J Tuñón
The sphingosine kinase (SphK)/sphingosine1-phosphate (S1P) pathway is involved in multiple biological processes, including carcinogenesis. Melatonin shows beneficial effects in cell and animal models of hepatocellular carcinoma (HCC), but it is unknown if they are associated with the modulation of the SphK/S1P system, along with different downstream signaling pathways modified in cancer. We investigated effects of melatonin in mice which received diethylnitrosamine (DEN) (35 mg/kg body weight i.p) once a week for 8 weeks...
October 1, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27627033/identification-transcriptional-and-functional-analysis-of-heat-shock-protein-90s-in-banana-musa-acuminata-l-highlight-their-novel-role-in-melatonin-mediated-plant-response-to-fusarium-wilt
#14
Yunxie Wei, Wei Hu, Qiannan Wang, Hongqiu Zeng, Xiaolin Li, Yu Yan, Russel J Reiter, Chaozu He, Haitao Shi
As one popular fresh fruit, banana (Musa acuminata) is cultivated in the world's subtropical and tropical areas. In recent years, pathogen Fusarium oxysporum f. sp. cubense (Foc) has been widely and rapidly spread to banana cultivated areas, causing substantial yield loss. However, the molecular mechanism of banana response to Foc remains unclear, and functional identification of disease-related genes is also very limited. In this study, nine 90 kDa heat-shock proteins (HSP90s) were genomewide identified. Moreover, the expression profile of them in different organs, developmental stages, and in response to abiotic and fungal pathogen Foc were systematically analyzed...
September 14, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27601067/melatonin-promotes-cardiomyogenesis-of-embryonic-stem-cells-via-inhibition-of-hif-1%C3%AE-stabilization
#15
Jana Kudová, Ondřej Vašíček, Milan Číž, Lukáš Kubala
Melatonin, a molecule involved in the regulation of circadian rhythms, has protective effects against myocardial injuries. However, its capability to regulate the maturation of cardiac progenitor cells is unclear. Recently, several studies have shown that melatonin inhibits the stabilization of hypoxia-inducible factors (HIFs), important signaling molecules with cardioprotective effects. In this study, by employing differentiating mouse embryonic stem cells, we report that melatonin significantly upregulated the expression of cardiac cell-specific markers (myosin heavy chains six and seven) as well as the percentage of myosin heavy chain-positive cells...
September 7, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27600920/melatonin-suppresses-tpa-induced-metastasis-by-downregulating-matrix-metalloproteinase-9-expression-through-jnk-sp-1-signaling-in-nasopharyngeal-carcinoma
#16
Hsin-Yu Ho, Chiao-Wen Lin, Ming-Hsien Chien, Russel J Reiter, Shih-Chi Su, Yi-Hsien Hsieh, Shun-Fa Yang
Nasopharyngeal carcinoma (NPC), a disease common in the South-East Asian population, has high lymph node metastatic ability. Melatonin, an endogenously produced substance present in animals, plants, fungi, and bacteria, has oncotstatic activity via several mechanisms. The molecular mechanisms involved in melatonin-mediated tumor inhibitory potential are not completely defined. Here, we show that melatonin treatment inhibits TPA-induced cell motility by regulating matrix metalloproteinase-9 (MMP-9) expression in NPC...
September 7, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27600803/melatonin-biosynthesis-in-plants-multiple-pathways-catalyze-tryptophan-to-melatonin-in-the-cytoplasm-or-chloroplasts
#17
Kyoungwhan Back, Dun-Xian Tan, Russel J Reiter
Melatonin is an animal hormone as well as a signaling molecule in plants. It was first identified in plants in 1995, and almost all enzymes responsible for melatonin biosynthesis had already been characterized in these species. Melatonin biosynthesis from tryptophan requires four-step reactions. However, six genes, i.e., TDC, TPH, T5H, SNAT, ASMT, and COMT, have been implicated in the synthesis of melatonin in plants, suggesting the presence of multiple pathways. Two major pathways have been proposed based on the enzyme kinetics: one is the tryptophan/tryptamine/serotonin/N-acetylserotonin/melatonin pathway, which may occur under normal growth conditions; the other is the tryptophan/tryptamine/serotonin/5-methoxytryptamine/melatonin pathway, which may occur when plants produce large amounts of serotonin, e...
September 7, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27500468/melatonin-as-an-antioxidant-under-promises-but-over-delivers
#18
REVIEW
Russel J Reiter, Juan C Mayo, Dun-Xian Tan, Rosa M Sainz, Moises Alatorre-Jimenez, Lilian Qin
Melatonin is uncommonly effective in reducing oxidative stress under a remarkably large number of circumstances. It achieves this action via a variety of means: direct detoxification of reactive oxygen and reactive nitrogen species and indirectly by stimulating antioxidant enzymes while suppressing the activity of pro-oxidant enzymes. In addition to these well-described actions, melatonin also reportedly chelates transition metals, which are involved in the Fenton/Haber-Weiss reactions; in doing so, melatonin reduces the formation of the devastatingly toxic hydroxyl radical resulting in the reduction of oxidative stress...
October 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27484637/melatonin-induced-increase-in-sensitivity-of-human-hepatocellular-carcinoma-cells-to-sorafenib-is-associated-with-reactive-oxygen-species-production-and-mitophagy
#19
Néstor Prieto-Domínguez, Raquel Ordóñez, Anna Fernández, Carolina Méndez-Blanco, Anna Baulies, Carmen Garcia-Ruiz, José C Fernández-Checa, José L Mauriz, Javier González-Gallego
Effects of sorafenib in hepatocellular carcinoma (HCC) are frequently transient due to tumor-acquired resistance, a phenotype that could be targeted by other molecules to reduce this adaptive response. Because melatonin is known to exert antitumor effects in HCC cells, this study investigated whether and how melatonin reduces resistance to sorafenib. Susceptibility to sorafenib (10 nmol/L to 50 μmol/L) in the presence of melatonin (1 and 2 mmol/L) was assessed in HCC cell lines HepG2, HuH7, and Hep3B. Cell viability was reduced by sorafenib from 1 μmol/L in HepG2 or HuH7 cells, and 2...
October 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27465521/melatonin-enhances-hyperthermia-induced-apoptotic-cell-death-in-human-leukemia-cells
#20
Carlos Quintana, Javier Cabrera, Juan Perdomo, Francisco Estévez, Juan F Loro, Russel J Reiter, José Quintana
Melatonin is an endogenous indoleamine with a wide range of biological functions. In addition to modulating circadian rhythms, it plays important roles in the health as an antioxidant. Melatonin has also the ability to induce apoptosis in cancer cells and to enhance the antitumoral activity of chemotherapeutic agents. In this study, the effect of melatonin on hyperthermia-induced apoptosis was explored using human leukemia cells. The results demonstrate that melatonin greatly improved the cytotoxicity of hyperthermia in U937 cells...
October 2016: Journal of Pineal Research
journal
journal
29033
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"