scholarly journals Immunohistological Localization of Mel1a Melatonin Receptor in Pigeon Retina

2021 ◽  
Vol Volume 13 ◽  
pp. 113-121
Author(s):  
Wenlong Sheng ◽  
Shijun Weng ◽  
Fei Li ◽  
Yun Zhang ◽  
Qiuxia He ◽  
...  
Keyword(s):  
Melatonin Receptor ◽  
Pigeon Retina

Cellular localization of melatonin receptor Mel1b in pigeon retina

Neuropeptides ◽  
2019 ◽  
Vol 78 ◽  
pp. 101974
Author(s):  
Wenlong Sheng ◽  
Meng Jin ◽  
Ge Pan ◽  
Shijun Weng ◽  
Attila Sik ◽  
...  
Keyword(s):  
Cellular Localization ◽  
Melatonin Receptor ◽  
Pigeon Retina

Effect of melatonin receptor agonist Neu-P11 on phosphorylation of protein kinase B in mouse 3T3-L1 adipocytes

2015 ◽  
Vol 36 (7) ◽  
pp. 802
Author(s):  
Xiu-ping LI ◽  
Shi-chang CAI ◽  
Wei-dong YIN ◽  
Su-jun ZHANG ◽  
Rong HU ◽  
...  
Keyword(s):  
Protein Kinase ◽  
Receptor Agonist ◽  
Protein Kinase B ◽  
Melatonin Receptor

scholarly journals CAND2/PMTR1 Is Required for Melatonin-Conferred Osmotic Stress Tolerance in Arabidopsis

2021 ◽  
Vol 22 (8) ◽  
pp. 4014
Author(s):  
Lin-Feng Wang ◽  
Ting-Ting Li ◽  
Yu Zhang ◽  
Jia-Xing Guo ◽  
Kai-Kai Lu ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Stress Tolerance ◽  
Wild Type Plant ◽  
Wild Type ◽  
Melatonin Receptor ◽  
Ros Scavenging ◽  
Exogenous Melatonin ◽  
Osmotic Stress Tolerance ◽  
Osmotic Stress Response ◽  
In The Wild

Osmotic stress severely inhibits plant growth and development, causing huge loss of crop quality and quantity worldwide. Melatonin is an important signaling molecule that generally confers plant increased tolerance to various environmental stresses, however, whether and how melatonin participates in plant osmotic stress response remain elusive. Here, we report that melatonin enhances plant osmotic stress tolerance through increasing ROS-scavenging ability, and melatonin receptor CAND2 plays a key role in melatonin-mediated plant response to osmotic stress. Upon osmotic stress treatment, the expression of melatonin biosynthetic genes including SNAT1, COMT1, and ASMT1 and the accumulation of melatonin are increased in the wild-type plants. The snat1 mutant is defective in osmotic stress-induced melatonin accumulation and thus sensitive to osmotic stress, while exogenous melatonin enhances the tolerance of the wild-type plant and rescues the sensitivity of the snat1 mutant to osmotic stress by upregulating the expression and activity of catalase and superoxide dismutase to repress H2O2 accumulation. Further study showed that the melatonin receptor mutant cand2 exhibits reduced osmotic stress tolerance with increased ROS accumulation, but exogenous melatonin cannot revert its osmotic stress phenotype. Together, our study reveals that CADN2 functions necessarily in melatonin-conferred osmotic stress tolerance by activating ROS-scavenging ability in Arabidopsis.

Evaluation of Delirium in Critically Ill Patients Prescribed Melatonin or Ramelteon

2021 ◽  
pp. 106002802110020
Author(s):  
Natasha Romero ◽  
Kevin M. Dube ◽  
Kenneth E. Lupi ◽  
Jeremy R. DeGrado
Keyword(s):  
Clinical Outcomes ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Receptor Agonist ◽  
Hospital Length ◽  
Hospital Length Of Stay ◽  
Melatonin Receptor ◽  
Observational Cohort ◽  
Impaired Sleep ◽  
Retrospective Observational Cohort Study

Background: An impaired sleep-wake cycle may be one factor that affects the development of delirium in critically ill patients. Several small studies suggest that exogenous melatonin or ramelteon may decrease the incidence and/or duration of delirium. Objective: To compare the effect of prophylactic administration of melatonin, ramelteon, or no melatonin receptor agonist on the development of delirium in the intensive care unit (ICU). Methods: This was a single-center, retrospective, observational cohort study of nondelirious patients in the ICU who received melatonin, ramelteon, or no melatonin receptor agonist. The primary end point was the incidence of delirium. Secondary end points included assessments of daily level of sedation and daily utilization of antipsychotic, sedative, and opioid agents. Results: No difference was observed in the incidence of delirium among the melatonin, ramelteon, and placebo cohorts (18.7% vs 14.3% vs 13.8%; P = 0.77). A difference was observed in the rate of agitation and sedation among the 3 groups, with the greatest observed in the melatonin cohort. Additionally, there was a difference in the use of propofol, dexmedetomidine, and opioids. Overall, there was no difference in clinical outcomes, including duration of mechanical ventilation and ICU or hospital length of stay. Conclusion and Relevance: Therapy with melatonin, ramelteon, and no melatonin receptor agonist resulted in similar rates of delirium in a mixed ICU population. Despite significant differences in agitation, sedation, and medication utilization, there was no differences in the clinical outcomes evaluated.

Pancreatic stellate/myofibroblast cells express G-protein-coupled melatonin receptor 1

2008 ◽  
Vol 158 (19-20) ◽  
pp. 575-578 ◽  
Author(s):  
Sylvia Aust ◽  
Walter Jäger ◽  
Harald Kirschner ◽  
Martin Klimpfinger ◽  
Theresia Thalhammer
Keyword(s):  
G Protein ◽  
Melatonin Receptor ◽  
G Protein Coupled

scholarly journals Behavioral changes in the brown planthopper, Nilaparvata lugens, mediated by melatonin

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Longqing Shi ◽  
Junian Zhang ◽  
Liangmiao Qiu ◽  
Zhaowei Jiang ◽  
Zhenxing Xie ◽  
...  
Keyword(s):  
Rice Plant ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Behavioral Changes ◽  
The Other ◽  
Melatonin Receptor ◽  
Melatonin Treatment ◽  
Locomotor Pattern ◽  
Locomotor Activities ◽  
Locomotor Behaviors

Abstract Background Melatonin has been proved to exist and play importance roles in rice plant, such as biosynthesis and resistance. However, little is known about the function of melatonin in its monophagous pest, the brown planthopper. Methods In this study, we examined the effects of melatonin on the copulatory and locomotor behaviors of brachypterous and macropterous adult planthoppers by exposing them to melatonin, luzindole (a melatonin receptor antagonist), or a combination of melatonin and luzindole. Results A total of 68.7% of copulation events occurred at night in the control, while 31.2% occurred at night in the melatonin treatment, which led to a decrease in offspring. Brachypterous males were involved in mating events in the melatonin treatment but not in the other two treatments or the control. The daily locomotor pattern in the melatonin treatment was markedly different from that in the luzindole and melatonin and luzindole treatments. The total locomotor activities of the macropterous and brachypterous males exposed with melatonin were suppressed compared to those in the control. Melatonin significantly decreased the daytime and nighttime locomotor activities of macropterous females. In comparison, the activity of brachypterous females decreased slightly in the daytime but was more than double that of the control females at night. Conclusions Our results reveal that melatonin plays a role in the behaviors of brown planthoppers.

148 Polymorphisms of the melatonin receptor 1A (MTNR1A) gene do not modify social strategies of Rasa Aragonesa rams in spring

2021 ◽  
Vol 12 (1) ◽  
pp. 118
Author(s):  
José-Alfonso Abecia ◽  
Andrea L. Heredia Vargas ◽  
Vincenzo Carcangiu ◽  
Maria-Consuelo Mura ◽  
Genaro C. Miranda-de la Lama
Keyword(s):  
Melatonin Receptor ◽  
Social Strategies

scholarly journals Fluorine substituted methoxyphenylalkyl amides as potent melatonin receptor agonists

MedChemComm ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 460-464 ◽  
Author(s):  
Andrew Tsotinis ◽  
Rodanthi Kompogennitaki ◽  
Ioannis Papanastasiou ◽  
Peter J. Garratt ◽  
Alina Bocianowska ◽  
...  
Keyword(s):  
Side Chain ◽  
Melatonin Receptor ◽  
Receptor Agonists ◽  
Methoxy Groups ◽  
Melatonin Receptor Agonists

A series of fluorine substituted methoxyphenylalkyl amides were prepared with different orientations of the fluorine and methoxy groups with respect to the alkylamide side chain and with alkyl sides of differing lengths (n= 1–3).

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