Intrathecal administration of SRT1720 relieves bone cancer pain by inhibiting the CREB/CRTC1 signalling pathway

In this study, we measured the analgesic effects of different intrathecal doses of SRT1720 on BCP in a murine model and further examined whether SRT1720 attenuated BCP by suppressing CREB/CREB-regulated transcription coactivator 1 (CRTC1) signalling pathway. Our results demonstrated that the BCP mice developed significant mechanical allodynia and spontaneous flinching, which were accompanied by the upregulation of phospho-Ser133 CREB (p-CREB) and CRTC1 expression in the spinal cord. SRT1720 treatment produced a dose-dependent analgesic effect on the BCP mice and downregulated the expression of p-CREB and CRTC1. These results suggest that intrathecal administration of SRT1720 reverses BCP likely by inhibiting the CREB/CRTC1 signalling pathway.
Source: Neuroscience Letters - Category: Neuroscience Source Type: research

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Publication date: November 2020Source: Biomedicine &Pharmacotherapy, Volume 131Author(s): Wei Gu, Yu’e Sun, Wanjie Gu, Yulin Huang, Jinhua Bo, Luyang Zhou, Zhengliang Ma, Xiaoping Gu, Wei Zhang
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research
CONCLUSIONS: Intrathecal pioglitazone administration alleviates BCP by regulating the PPARγ/PTEN/mTOR signal in the SDH. Our data provided new insight in the therapeutic strategy in BCP management. PMID: 32942156 [PubMed - as supplied by publisher]
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - Category: Drugs & Pharmacology Authors: Tags: Biomed Pharmacother Source Type: research
The authors have retracted this article [1] because in further experiments, they found that some experimental data cannot be verified repeatedly.
Source: Journal of Molecular Neuroscience - Category: Neuroscience Source Type: research
Publication date: Available online 13 August 2020Source: Journal of Advanced ResearchAuthor(s): Wen-Ling Dai, Yi-Ni Bao, Ji-Fa Fan, Bin Ma, Shan-Shan Li, Wan-Li Zhao, Bo-Yang Yu, Ji-Hua Liu
Source: Journal of Advanced Research - Category: Research Source Type: research
Cancer pain is one of the most common and serious symptoms of cancer patients. At present, the agents used for the prevention or treatment of cancer pain do not act with optimal safety and efficacy. The nuclear factor kappa B (NF-κB) signaling pathway and its downstream inflammatory factors interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) play an important regulatory role in the developmental process of cancer pain. IKKβ is a key molecule of the IκB (IKK) kinase that propagates cellular responses to inflammation. Previous studies have shown that phosph...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
In this study, the antinociceptive effects of liquiritin, which is an active component extracted from Glycyrrhizae Radix, were tested and the underlying mechanisms targeting spinal dorsal horn (SDH) were investigated. The BCP group displayed a significant decrease in the mechanical withdrawal threshold on days 6, 12, and 18 when compared with sham groups. Intrathecal administration of different doses of liquiritin alleviated mechanical allodynia in BCP rats. The results of immunofluorescent staining and western blotting showed that liquiritin inhibited BCP-induced activation of astrocytes in the spinal cord. Moreover, intr...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Robust activation of glial cells has been reported to occur particularly during the pathogenesis of bone cancer pain (BCP). Researchers from our group and others have shown that histone deacetylases (HDACs) pl...
Source: Journal of Neuroinflammation - Category: Neurology Authors: Tags: Research Source Type: research
Bone cancer pain (BCP) is one of the most common types of chronic cancer pain and its pathogenesis has not been fully understood. Long non-coding RNAs (lncRNAs) are new promising targets in the field of pain r...
Source: Molecular Brain - Category: Neuroscience Authors: Tags: Research Source Type: research
This study evaluated its antinociceptive effects in pain hypersensitivity and explored the underlying mechanisms. The data showed that subcutaneous lemairamin injection dose-dependently inhibited formalin-induced tonic pain but not acute nociception in mice and rats, while intrathecal lemairamin injection also dose-dependently produced mechanical antiallodynia in the ipsilateral hindpaws of neuropathic and bone cancer pain rats without affecting mechanical thresholds in the contralateral hindpaws. Multiple bi-daily lemairamin injections for 7 days did not induce mechanical antiallodynic tolerance in neuropathic rats. Moreo...
Source: Biochemical and Biophysical Research communications - Category: Biochemistry Authors: Tags: Biochem Biophys Res Commun Source Type: research
This study further explored the dual μ-opioid receptor and norepinephrine reuptake mechanisms underlying dezocine-induced mechanical antiallodynia in bone cancer pain, compared with tapentadol, the first recognized analgesic in this class. Dezocine and tapentadol, given subcutaneously, exerted profound mechanical antiallodynia in bone cancer pain rats in a dose-dependent manner, yielding similar maximal effects but different potencies: ED50s of 0.6 mg/kg for dezocine and 7.5 mg/kg for tapentadol, respectively. Furthermore, their mechanical antiallodynia was partially blocked by intrathecal injection of the specific ...
Source: European Journal of Pharmacology - Category: Drugs & Pharmacology Authors: Tags: Eur J Pharmacol Source Type: research
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