keyword
MENU ▼
Read by QxMD icon Read
search

Melatonine

keyword
https://www.readbyqxmd.com/read/29339757/melatonin-increases-chilling-tolerance-in-postharvest-peach-fruit-by-alleviating-oxidative-damage
#1
Shifeng Cao, Jiarong Shao, Liyu Shi, Liwei Xu, Ziming Shen, Wei Chen, Zhenfeng Yang
Melatonin has been reported to alleviate chilling symptoms in postharvest peach fruit during cold storage, however, the mechanism involved is largely unknown. To better understand its role in chilling tolerance, here we investigated the effects of melatonin on oxidative damage in peach fruit subjected to chilling after harvest. Chilling injury of peaches was dramatically reduced by melatonin treatment. Melatonin induced hydrogen peroxide (H2O2) content at the early stage of storage but inhibited its accumulation thereafter...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29338098/increase-in-motility-and-invasiveness-of-mcf7-cancer-cells-induced-by-nicotine-is-abolished-by-melatonin-through-inhibition-of-erk-phosphorylation
#2
Sara Proietti, Angela Catizone, Maria Grazia Masiello, Simona Dinicola, Gianmarco Fabrizi, Mirko Minini, Giulia Ricci, Roberto Verna, Russel J Reiter, Alessandra Cucina, Mariano Bizzarri
Through activation of the ERK pathway nicotine, in both normal MCF-10A and low malignant breast cancer cells (MCF7), promotes increased motility and invasiveness. Melatonin antagonizes both these effects by inhibiting almost completely ERK phosphorylation. As melatonin has no effect on not-stimulated cells, it is likely that melatonin can counteract ERK-activation only downstream of nicotine-induced activation. This finding suggests that melatonin hampers ERK phosphorylation presumably by targeting a still unknown intermediate factor that connects nicotine stimulation to ERK phosphorylation...
January 16, 2018: Journal of Pineal Research
https://www.readbyqxmd.com/read/29336611/interventions-to-improve-benzodiazepine-tapering-success-in-the-elderly-a-systematic-review
#3
Carol Dou, Johannes Rebane, Stan Bardal
BACKGROUND: Long-term benzodiazepine use in the elderly population is a significant public health problem that leads to impaired cognitive functioning, medication dependence and increased risks for adverse drug reactions. The aim of this review was to examine randomized controlled trials (RCTs) on the efficacy of different methods for tapering and discontinuing benzodiazepines. METHOD: We used four databases (Ovid, PubMed, Academic Search Complete, Web of Science) to retrieve randomized controlled trials published in peer-reviewed journals that explored different methods for tapering benzodiazepine use in a primarily geriatric population...
January 16, 2018: Aging & Mental Health
https://www.readbyqxmd.com/read/29331794/melatonin-suppresses-eosinophils-and-th17-cells-in-hamsters-treated-with-a-combination-of-human-liver-fluke-infection-and-a-chemical-carcinogen
#4
Wachanan Wongsena, Lakhanawan Charoensuk, Rungtiwa Dangtakot, Porntip Pinlaor, Kitti Intuyod, Somchai Pinlaor
BACKGROUND: The combination of Opisthorchis viverrini (OV) infection and chemical carcinogen induces cholangiocarcinoma (CCA) in hamsters via inflammation-mediated mechanisms. Thus, suppression of inflammatory cells at the initial stages of CCA development would be of benefit. We aimed to investigate whether IL-17-producing CD4+ T cells (Th17) and CD4+ Foxp3+ T cells (Treg) are involved in the early stages of CCA genesis and can be targeted for suppression by melatonin. METHODS: Inflammation, an initial stage of CCA development, was induced in hamsters by a combination of O...
July 26, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29330934/melatonin-inhibits-the-proliferation-of-breast-cancer-cells-induced-by-bisphenol-a-via-targeting-estrogen-receptor-related-pathways
#5
Tianjiao Wang, Bowen Liu, Yanan Guan, Miaomiao Gong, Weiying Zhang, Jinjin Pan, Yanan Liu, Rui Liang, Yuhui Yuan, Lihong Ye
BACKGROUND: Background: Bisphenol A (BPA) is an estrogen-like chemical widely contained in daily supplies. There is evidence that environmental exposure to BPA could contribute to the development of hormone-related cancers. As is reported in numerous studies, melatonin, an endogenous hormone secreted by the pineal gland, could markedly inhibit estrogen-induced proliferation of breast cancer (BC) cells. In this study, we intended to reveal the effects of melatonin on BPA-induced proliferation of estrogen receptor-positive BC cells...
January 13, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29328029/-metabolic-secretion-in-reproductive-age-women-with-obesity
#6
A Malazonia, T Zerekidze, N Vekua, N Chkheidze, K Asatiani
For the last decade melatonin has attracted attention as a neuroregulator in pathogenesis of obesity and metabolic syndrome. The aim of our study is to evaluate the characteristics of metabolic secretion in obese women of reproductive age. The study was conducted on the total number of 120 women. Eighty women with obesity formed the case group, and forty healthy women - the control group. Carbohydrate metabolism, lipid profile and serum levels of melatonin were evaluated in all study subjects. According to the results, 61...
December 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29327399/plga-mpeg-nanoparticles-loaded-with-melatonin-protect-adipose-derived-stem-cells-transplanted-in-infarcted-heart-tissue
#7
Qiang Ma, Junjie Yang, Xu Huang, Weisheng Guo, Sulei Li, Hao Zhou, Jingwei Li, Yundai Chen
Stem cell transplantation is a promising therapeutic strategy for myocardial infarction. However, transplanted cells face low survival rates due to oxidative stress and the inflammatory microenvironment in ischemic heart tissue. Melatonin has been used as a powerful endogenous antioxidant to protect cells from oxidative injury. However, melatonin cannot play a long lasting effect against the hostile microenvironment. Nano drug delivery carriers have the ability to protect the loaded drug from degradation in physiological environments in a controlled manner, which results in longer effects and decreased side effects...
January 12, 2018: Stem Cells
https://www.readbyqxmd.com/read/29325994/the-effects-of-melatonin-and-curcumin-on-the-expression-of-sirt2-bcl-2-and-bax-in-the-hippocampus-of-adult-rats
#8
Arzu Keskin-Aktan, Kazime Gonca Akbulut, Çiğdem Yazici-Mutlu, Gizem Sonugur, Müge Ocal, Hakan Akbulut
OBJECTIVE: Though the mechanisms are not clearly understood, melatonin and curcumin have been reported to have neuroprotective effects. However, the mechanisms of neuroprotective effects of melatonin and curcumin in the brain are not clearly understood. In the current study, we investigated the effects of melatonin and curcumin treatments on oxidative stress parameters, the expression of SIRT2, Bcl-2 and Bax in the hippocampus. METHODS: A total of twenty-four adult (13 months-old) male Wistar rats were divided into four groups: Control (1% ethanol:PBS), s...
January 8, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29325109/estimating-adolescent-sleep-need-using-dose-response-modelling
#9
Michelle A Short, Nathan Weber, Chelsea Reynolds, Scott Coussens, Mary A Carskadon
Study Objectives: This study will, (a) estimate the nightly sleep need of human adolescents, (b) determine the time course and severity of sleep-related deficits when sleep is reduced below this optimal quantity, and (c) determine whether sleep restriction perturbs the circadian system as well as the sleep homeostat. Methods: Thirty-four adolescents aged 15 to 17 years spent 10 days and 9 nights in the sleep laboratory. Between two baseline nights and two recovery nights with 10-hours' time in bed (TIB) per night, participants experienced either severe sleep restriction (5-hr TIB), moderate sleep restriction (7...
January 6, 2018: Sleep
https://www.readbyqxmd.com/read/29325001/hydrogen-peroxide-acts-downstream-of-melatonin-to-induce-lateral-root-formation
#10
Ziping Chen, Quan Gu, Xiuli Yu, Liqin Huang, Sheng Xu, Ren Wang, Wei Shen, Wenbiao Shen
Background and Aims: Although several studies have confirmed the beneficial roles of exogenous melatonin in lateral root (LR) formation, the molecular mechanism is still elusive. Here, the role of hydrogen peroxide (H2O2) in the induction of LR formation triggered by melatonin was investigated. Methods: Alfalfa (Medicago sativa 'Biaogan') and transgenic Arabidopsis seedlings were treated with or without melatonin, diphenyleneiodonium (DPI, NADPH oxidase inhibitor), N,N'-dimethylthiourea (DMTU, H2O2 scavenger), alone or combined...
January 9, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29322615/melatonin-protects-against-a%C3%AE-induced-neurotoxicity-in-primary-neurons-via-mir-132-pten-akt-foxo3a-pathway
#11
Yue Zhao, Ranran Zhao, Jintao Wu, Qian Wang, Kunkun Pang, Qingqing Shi, Qing Gao, Yanlai Hu, Xiaoguang Dong, Jing Zhang, Jinhao Sun
Alzheimer's disease (AD) is a kind of neurodegenerative disorder associated with age. Investigations suggest that amyliod-β (Aβ) is implicated in the pathogenesis of AD. The accumulation of Aβ in the brain causes oxidative stress and synaptic toxicity, leads to synaptic dysfunction and neuronal death. Previous investigations suggest that melatonin an endogenous hormone can counteract Aβ-induced neurotoxicity. However, the molecular mechanisms of Aβ-induced toxicity and melatonin treatment remain elusive...
January 11, 2018: BioFactors
https://www.readbyqxmd.com/read/29320872/correction-to-bai-et%C3%A2-al-melatonin-promotes-self-renewal-of-nestin-positive-pancreatic-stem-cells-through-activation-of-the-mt2-erk-smad-nestin-axis
#12
(no author information available yet)
No abstract text is available yet for this article.
January 10, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29320843/diagnostic-utility-of-serum-melatonin-levels-in-systemic-lupus-erythematosus-a-case-control-study
#13
A B Rasheed, M S Daoud, F I Gorial
Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune inflammatory disease and early diagnosis is of clinical and therapeutic importance. Melatonin is an endogenous endolamine hormone that plays an important role in the immune system due to its anti-inflammatory action. This study was designed to assess serum melatonin levels in SLE patients and to evaluate the possible correlation between serum melatonin and patients' baseline characteristics. A case-control study was performed on 50 SLE patients (48 females and 2 males), diagnosed according to the revised 1997 ACR Criteria, and 25 healthy controls (24 females and 1 male), matched by age and sex...
December 21, 2017: Reumatismo
https://www.readbyqxmd.com/read/29318587/new-perspectives-on-the-role-of-melatonin-in-human-sleep-circadian-rhythms-and-their-regulation
#14
REVIEW
N Zisapel
In mammals a central circadian clock, located in the suprachiasmatic nuclei (SCN) of the hypothalamus, tunes the innate circadian physiological rhythms to the ambient 24h light-dark cycle to invigorate and optimize the internal temporal order. The SCN-activated, light- inhibited production of melatonin conveys the message of darkness to the clock and induces night state in physiological function, e.g., sleep/wake blood pressure and metabolism. Clinically meaningful effects of melatonin treatment have been demonstrated in placebo-controlled trials in humans, particularly in disorders associated with diminished or misaligned melatonin rhythms, e...
January 10, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29318392/relationship-between-melatonin-and-bone-resorption-rhythms-in-premenopausal-women
#15
Melissa A St Hilaire, Shadab A Rahman, Joshua J Gooley, Paula A Witt-Enderby, Steven W Lockley
Although evidence exists for a daily rhythm in bone metabolism, the contribution of factors such as melatonin levels, the light-dark cycle, and the sleep-wake cycle is difficult to differentiate given their highly correlated time courses. To examine these influences on bone resorption, we collected 48-h sequential urine samples under both ambulatory (8-h sleep:16-h wake) and constant routine (CR) (constant wake, posture, nutrition and dim light) conditions from 20 healthy premenopausal women. Urinary 6-sulphatoxymelatonin (aMT6s; ng/h) and the bone resorption marker amino-terminal cross-linked collagen I telopeptide (NTx; bone collagen equivalents nM/h) were assayed and fit by cosinor models to determine significant 24-h rhythms and acrophase...
January 9, 2018: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29313427/melatonin-therapy-for-blunt-trauma-and-strenuous-exercise-a-mechanism-involving-cytokines-nf%C3%AE%C2%BAb-akt-mafbx-and-murf-1
#16
Gerald J Maarman, Russel J Reiter
Muscle injury occurs due to trauma, strenuous exercise or sports activities; most people affected are athletes. Ineffectively treated muscle injury can negatively affect sports careers and quality of life after retirement from sports. Reports have indicated that the current therapeutic management of muscle injury, particularly anti-inflammatory drugs, are not necessarily effective. Therefore, better therapies are required. Accumulating evidence has demonstrated melatonin's potent antioxidant and anti-inflammatory actions against muscle pathology in sarcopenia or atrophy in systemic disease...
January 9, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29307018/the-role-of-tryptophan-metabolism-in-postpartum-depression
#17
REVIEW
Kai-Ming Duan, Jia-Hui Ma, Sai-Ying Wang, ZhengDong Huang, YingYong Zhou, HeYa Yu
The Postpartum depression (PPD) is the most common postpartum psychiatric disorder, afflicting approximately 10%-20% of new mothers. Clinical symptoms of the PPD include depressive disorder, agitation, insomnia, anxiety and confusion, resulting in an increase in suicidal tendencies, thereby having significant impacts on the puerpera, newborn and their family. A growing body of data indicate a role for alterations in tryptophan metabolism in the PPD. The metabolism of tryptophan produces an array of crucial factors that can differentially regulate key physiological processes linked to the PPD...
January 6, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29304519/effect-of-n-acetylserotonin-on-tlr-4-and-myd88-expression-during-intestinal-ischemia-reperfusion-in-a-rat-model
#18
Igor Sukhotnik, Yoav Ben Shahar, Salim Halabi, Nir Bitterman, Tatiana Dorfman, Yulia Pollak, Arnold Coran, Arie Bitterman
BACKGROUND:  Accumulating evidence indicates that changes in intestinal toll-like receptors (TLRs) precede histological injury in a rodent model of necrotizing enterocolitis. N-acetylserotonin (NAS) is a naturally occurring chemical intermediate in the biosynthesis of melatonin. A recent study has shown that treatment with NAS prevents gut mucosal damage and inhibits programmed cell death following intestinal ischemia-reperfusion (IR). The objective of this study was to determine the effects of NAS on TLR-4, myeloid differentiation factor 88 (Myd88), and TNF-α receptor-associated factor 6 (TRAF6) expression in intestinal mucosa following intestinal IR in a rat...
January 5, 2018: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29303950/cns-drug-development-lessons-learned-part-4-the-role-of-brain-circuitry-and-genes-tasimelteon-as-an-example
#19
Sheldon H Preskorn
This is the fourth in a series of columns discussing the rational and targeted development of drugs to affect specific central nervous system (CNS) circuits in specific ways based on knowledge gained by molecular biology and the human genome project. The first column in this series described 6 CNS drugs with novel mechanisms of action developed over the last 25 years. The second column discussed differences between syndromic diagnoses as exemplified by the third through the fifth editions of the Diagnostic and Statistical Manual of Mental Disorders (DSM III through DSM-5) and the new approach to psychiatric diagnoses championed by the National Institute of Mental Health in their Research Domain Criteria Initiative...
November 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/29303602/melatonin-attenuates-chronic-cough-mediated-by-oxidative-stress-via-transient-receptor-potential-melastatin-2-in-guinea-pigs-exposed-to-particulate-matter-2-5
#20
Zhenjun Ji, Zhen Wang, Zhe Chen, Hao Jin, Chen Chen, Senlin Chai, Haining Lv, Ling Yang, Yakun Hu, Rong Dong, Kefang Lai
The aim of this study was to investigate the effects of melatonin on oxidative stress, the expression of transient receptor potential melastatin-2 (TRPM2) in guinea pig brains, and the influence of melatonin on oxidative stress in lungs and airway inflammation induced by particulate matter 2.5 (PM2.5). A particle suspension (0.1 g/ml) was nasally administered to the guinea pigs to prepare a PM2.5 exposure model. Cough frequency and cough incubation period were determined through RM6240B biological signal collection and disposal system...
January 5, 2018: Physiological Research
keyword
keyword
41383
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"