Journal of Pineal Research最新文献

RETRACTION: Alonso M, Collado PS, González-Gallego J. Melatonin inhibits the expression of the inducible isoform of nitric oxide synthase and nuclear factor kappa B activation in rat skeletal muscle. J Pineal Res 2006;41:8-14. https://doi.org/10.1111/j.1600-079X.2006.00323.x

The above article, published online on 28 June 2006 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties regarding Figure 1. The authors could not provide the original data for this figure, and were unable to provide a satisfactory explanation to resolve the concerns. The retraction has been agreed because of concerns that portions of the figure were duplicated, affecting the interpretation of the data and results presented. The authors disagree with this decision.

RETRACTION: Sánchez DI, González-Fernández B, San-Miguel B, de Urbina JO, Crespo I, González-Gallego J, Tuñón MJ. Melatonin prevents deregulation of the sphingosine kinase/sphingosine 1-phosphate signaling pathway in a mouse model of diethylnitrosamine-induced hepatocellular carcinoma. J Pineal Res 2017;62:e12369. https://doi.org/10.1111/jpi.12369

The above article, published online on 1 October 2016 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties regarding Figure 4C. The authors could not provide the original data for this figure. The authors provided an updated image, but this was not sufficient to resolve the concerns, and the authors were unable to provide a satisfactory explanation for the concerns. The retraction has been agreed because of concerns that portions of the figure were duplicated, affecting the interpretation of the data and results presented. The authors disagree with this decision.

RETRACTION: Laliena A, Miguel BS, Crespo I, Alvarez M, González-Gallego J, Tuñón MJ. Melatonin attenuates inflammation and promotes regeneration in rabbits with fulminant hepatitis of viral origin. J Pineal Res 2012;53:270-278. https://doi.org/10.1111/j.1600-079X.2012.00995.x

The above article, published online on 19 March 2012 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties that portions of Figure 1B are duplicated in Figures 4, 2A, and 4, respectively, of two other articles by the same author group.^1-3 The authors provided some of the original data, but these were not sufficient to resolve the concerns, and the authors were unable to provide a satisfactory explanation for the concerns. The retraction has been agreed because of concerns that portions of the figure overlap with the authors' previous articles, affecting the interpretation of the data and results presented. The authors disagree with this decision.

1. Kretzmann NA, Fillmann H, Mauriz JL, Marroni, CA, Marroni N, González-Gallego J, Tuñón MJ. Effects of glutamine on pro-inflammatory gene expression and activation of nuclear factor kappa B and signal transducers and activators of transcription in TNBS-induced colitis. Inflamm Bowel Dis 2008;14:1504-1513. https://doi.org/10.1002/ibd.20543

2. Crespo I, García-Mediavilla MV, Gutiérrez B, Sánchez-Campos S, Tuñón MJ, González-Gallego J. A comparison of the effects of kaempferol and quercetin on cytokine-induced pro-inflammatory status of cultured human endothelial cells. Br J Nutr 2008;100(5):968-976. https://doi.org/10.1017/S0007114508966083

3. Tuñón MJ, Miguel BS, Crespo I, Jorquera F, Santamaría E, Alvarez M, Prieto J, González-Gallego J. Melatonin attenuates apoptotic liver damage in fulminant hepatic failure induced by the rabbit hemorrhagic disease virus. J Pineal Res 2011;50:38-45. https://doi.org/10.1111/j.1600-079X.2010.00807.x

RETRACTION: San-Miguel B, Crespo I, Sánchez, DI, González-Fernández B, Ortiz de Urbina JJ, Tuñón MJ, González-Gallego J. Melatonin inhibits autophagy and endoplasmic reticulum stress in mice with carbon tetrachloride-induced fibrosis. J Pineal Res 2015;59:151-162. https://doi.org/10.1111/jpi.12247

The above article, published online on 8 May 2015 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties regarding Figures 3 A and 6 A. The authors could not provide the original data for these figures. The authors provided some updated images, but these were not sufficient to resolve the concerns, and the authors were unable to provide a satisfactory explanation for the concerns. The retraction has been agreed because of concerns that portions of the figures were duplicated, affecting the interpretation of the data and results presented. The authors disagree with this decision.

RETRACTION: Sánchez DI, González-Fernández B, Crespo I, San-Miguel B, Álvarez M, González-Gallego J, Tuñón MJ. Melatonin modulates dysregulated circadian clocks in mice with diethylnitrosamine-induced hepatocellular carcinoma. J Pineal Res 2018; 65:e12506. https://doi.org/10.1111/jpi.12506

The above article, published online on 16 May 2018 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties regarding Figures 1C and 3C. Specifically, concerns were raised that portions of Figure 1C are duplicated in Figure 2C of another article by the same author group.¹ Concerns were also raised that portions of Figure 3C were duplicated within the figure. The authors could not provide the original data for these figures. The authors provided some updated images, but these were not sufficient to resolve the concerns, and the authors were unable to provide a satisfactory explanation for the concerns. The retraction has been agreed because of concerns that portions of the figures were duplicated and overlap with the authors' previous article, affecting the interpretation of the data and results presented. The authors disagree with this decision.

1. González-Fernández B, Sánchez DI, Crespo I, San-Miguel B, de Urbina JO, González-Gallego J, Tuñón MJ. Melatonin attenuates dysregulation of the circadian clock pathway in mice with ccl4-induced fibrosis and human hepatic stellate cells. Front. Pharmacol 2018;9:556. https://doi.org/10.3389/fphar.2018.00556

RETRACTION: Mauriz JL, Molpeceres V, García-Mediavilla MV, González P, Barrio JP, González-Gallego J. Melatonin prevents oxidative stress and changes in antioxidant enzyme expression and activity in the liver of aging rats. J Pineal Res 2007;42:222-230. https://doi.org/10.1111/j.1600-079X.2006.00409.x

The above article, published online on 12 December 2006 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties regarding Figure 4A. The authors could not provide the original data for this figure, and were unable to provide a satisfactory explanation to resolve the concerns. The retraction has been agreed because of concerns that portions of the figure were duplicated, affecting the interpretation of the data and results presented. The authors disagree with this decision.

RETRACTION: Crespo I, San-Miguel B, Sánchez DI, González-Fernández B, Álvarez M, González-Gallego J, Tuñón MJ. Melatonin inhibits the sphingosine kinase 1/sphingosine-1-phosphate signaling pathway in rabbits with fulminant hepatitis of viral origin. J Pineal Res 2016;61: 168-176. https://doi.org/10.1111/jpi.12335

The above article, published online on 22 April 2016 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Gianluca Tosini, and John Wiley and Sons Ltd. Following publication, concerns were raised by third parties regarding Figure 2A. The authors could not provide the original data for this figure. The authors provided an updated image, but this was not sufficient to resolve the concerns, and the authors were unable to provide a satisfactory explanation for the concerns. The retraction has been agreed because of concerns that portions of the figure were duplicated, affecting the interpretation of the data and results presented. The authors disagree with this decision.

The antidepressant venlafaxine, a selective serotonin and norepinephrine reuptake inhibitor, is commonly prescribed to treat major depressive disorder and is found at high concentrations in the aquatic environment. Concerns have been raised related to the health of aquatic organisms in response to this nontargeted pharmaceutical exposure. For instance, we previously demonstrated that exposure to venlafaxine perturbs neurodevelopment, leading to behavioural alterations in zebrafish (Danio rerio). We also observed disruption in serotonin expression in the pineal and raphe, regions critical in regulating circadian rhythms, leading us to hypothesize that zygotic exposure to venlafaxine disrupts the circadian locomotor rhythm in larval zebrafish. To test this, we microinjected zebrafish embryos with venlafaxine (1 or 10 ng) and recorded the locomotor activity in 5-day-old larvae over a 24-h period. Venlafaxine deposition reduced larval locomotor activity during the light phase, but not during the dark phase of the diurnal cycle. The melatonin levels were higher in the dark compared to during the light photoperiod and this was not affected by embryonic venlafaxine deposition. Venlafaxine exposure also did not affect the transcript abundance of clock genes, including clock1a, bmal2, cry1a and per2, which showed a clear day/night rhythmicity. A notable finding was that exposure to luzindole, a melatonin receptor antagonist, decreased the locomotor activity in the control group in light, whereas the activity was higher in larvae raised from the venlafaxine-deposited embryos. Overall, zygotic exposure to venlafaxine disrupts the locomotor activity of larval zebrafish fish during the day, demonstrating the capacity of antidepressants to disrupt the circadian rhythms in behaviour. Our results suggest that disruption in melatonin signalling may be playing a role in the venlafaxine impact on circadian behaviour, but further investigation is required to elucidate the possible mechanisms in larval zebrafish.

Melatonin is a pineal hormone that modulates the circadian system and exerts soporific and phase-shifting effects. It is also involved in many other physiological processes, such as those implicated in cardiovascular, endocrine, immune, and metabolic functions. However, the role of melatonin in glucose metabolism remains contradictory, and its action on human adipose tissue (AT) explants has not been demonstrated. We aimed to assess whether melatonin (a pharmacological dose) influences insulin sensitivity in human AT. This will help better understand melatonin administration's effect on glucose metabolism. Abdominal AT (subcutaneous and visceral) biopsies were obtained from 19 participants with severe obesity (age: 42.84 ± 12.48 years; body mass index: 43.14 ± 8.26 kg/m²) who underwent a laparoscopic gastric bypass. AT biopsies were exposed to four different treatments: control (C), insulin alone (I) (10 nM), melatonin alone (M) (5000 pg/mL), and insulin plus melatonin combined (I + M). All four conditions were repeated in both subcutaneous and visceral AT, and all were performed in the morning at 8 a.m. (n = 19) and the evening at 8 p.m. (in a subsample of n = 12). We used western blot analysis to determine insulin signaling (using the pAKT/tAKT ratio). Furthermore, RNAseq analyses were performed to better understand the metabolic pathways involved in the effect of melatonin on insulin signaling. As expected, insulin treatment (I) increased the pAKT/tAKT ratio compared with control (p < .0001). Furthermore, the addition of melatonin (I + M) resulted in a decrease in insulin signaling as compared with insulin alone (I); this effect was significant only during the evening time (not in the morning time). Further, RNAseq analyses in visceral AT during the evening condition (at 8 p.m.) showed that melatonin resulted in a prompt transcriptome response (around 1 h after melatonin addition), particularly by downregulating the insulin signaling pathway. Our results show that melatonin reduces insulin sensitivity in human AT during the evening. These results may partly explain the previous studies showing a decrease in glucose tolerance after oral melatonin administration in the evening or when eating late when endogenous melatonin is present.

Recently, microorganism and exogenous melatonin application has been recognized as an efficient biological tool for enhancing salt tolerance and heavy metal detoxification in agriculture crops. Thus, the goal of this study was to isolate and evaluate a novel melatonin-producing plant growth promoting bacterium. With high-throughput whole genome sequencing, phytohormone measurements, expression profiling, and biochemical analysis, we can identify a novel PGPB that produces melatonin and unravel how it promotes soybean growth and development and protects against salt and Cd stress. We identify the melatonin synthesis pathway (tryptophan→tryptamine→serotonin melatonin) of the halotolerant (NaCl > 800 mM) and heavy metal-resistant (Cd >3 mM) rhizobacterium Bacillus safensis EH143 and use it to treat soybean plants subjected to Cd and NaCl stresses. Results show that EH143 will highly bioaccumulate heavy metals and significantly improve P and Ca²⁺ uptake and the K⁺/Na⁺ (93%↑under salt stress) ratio while reducing Cd uptake (49% under Cd stress) in shoots. This activity was supported by the expression of the ion regulator HKT1, MYPB67, and the calcium sensors CDPK5 and CaMK1 which ultimately led to increased plant growth. EH143 significantly decreased ABA content in shoots by 13%, 20%, and 34% and increased SA biosynthesis in shoots by 14.8%, 31%, and 48.2% in control, salt, and Cd-treated plants, upregulating CYP707A1 and CYP707A2 and PAL1 and ICS, respectively. The melatonin content significantly decreased along with a reduced expression of ASMT3 following treatment with EH143; moreover, reduced expression of peroxidase (POD) and superoxide dismutase (SOD) by 134.5% and 39% under salt+Cd stress, respectively and increased level of total amino acids were observed. Whole-genome sequencing and annotation of EH143 revealed the presence of the melatonin precursor tryptophan synthase (trpA, trpB, trpS), metal and other ion regulators (Cd: cadA, potassium: KtrA and KtrB, phosphate: glpT, calcium: yloB, the sodium/glucose cotransporter: sgIT, and the magnesium transporter: mgtE), and enzyme activators (including the siderophore transport proteins yfiZ and yfhA, the SOD sodA, the catalase katA1, and the glutathione regulator KefG) that may be involved in programming the plant metabolic system. As a consequence, EH143 treatment significantly reduced the contents of lipid peroxidation (O^2-, MDA, and H₂O₂) up to 69%, 46%, and 29% in plants under salt+Cd stress, respectively. These findings suggest that EH143 could be a potent biofertilizer to alleviate NaCl and Cd toxicity in crops and serve as an alternative substitute for exogenous melatonin application.