Article
Endocrinology & Metabolism
Jian Xiao, Jiandong Niu, Biao Xu, Run Zhang, Mengna Zhang, Nan Zhang, Kangtai Xu, Qinqin Zhang, Dan Chen, Yonghang Shi, Quan Fang, Ning Li
Summary: This study investigates the antinociceptive effects of NOP01 on orofacial pain and its possible mechanisms of action. The results suggest that NOP01 exerts significant antinociception in both peripheral and spinal levels through the NOP receptor. Notably, NOP01 may be a potential compound for developing peripherally restricted analgesics, as it cannot readily penetrate the blood-brain barrier.
Article
Neurosciences
Andrea Cippitelli, Madeline Martinez, Gilles Zribi, Gerta Cami-Kobeci, Stephen M. Husbands, Lawrence Toll
Summary: This study found that PPL-138 effectively reduces cocaine consumption and relapse in rats. The compound increased locomotor activity in female rats but had no effect on food responses in both sexes. The suppression of cocaine self-administration by PPL-138 could be reversed by blocking mu-opioid receptors but not NOP receptors. Additionally, PPL-138 also reduced the reinstatement of cocaine seeking behavior.
Article
Chemistry, Medicinal
Zhuang Miao, Yuhan Zhong, Yu Gan, Kequan Fu, Wencheng Liu, Zhihua Cao, Tiantian Zhao, Ziyuan Li, Ao Hai, Yanlai Peng, Zeping Zuo, Tian Zhang, Shilong Hu, Chunxia Chen, Ting Kang, Tianguang Huang, Dong Guo, Bowen Ke
Summary: A new class of dual mu OR agonist/sigma R-1 antagonist has been reported, which exhibits robust analgesic effects with reduced side effects. The optimal compound, 4x, shows potent mu OR agonism activity and good sigma R-1 inhibitory activity, making it a promising lead compound for developing safer opioids.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Pharmacology & Pharmacy
B. F. G. Queiroz, F. C. S. Fonseca, R. C. M. Ferreira, T. R. L. Romero, A. C. Perez, I. D. G. Duarte
Summary: This study investigated the role of dopamine and its receptors in the peripheral processing of the nociceptive response in mice using a pharmacological approach and the paw pressure test. The results showed that dopamine at small doses produced antinociceptive effects via the activation of D-2-like receptors, while at higher doses it caused hyperalgesia via the activation of D-1-like receptors.
EUROPEAN JOURNAL OF PHARMACOLOGY
(2022)
Article
Chemistry, Medicinal
Qian He, Yuanyuan Wei, Xiao Liu, Rongrong Ye, Linghui Kong, Zixiang Li, Shuang Jiang, Linqian Yu, Jingrui Chai, Qiong Xie, Wei Fu, Yujun Wang, Wei Li, Zhuibai Qiu, Jinggen Liu, Liming Shao
Summary: In search for safer selective kappa OR agonists, a series of m-substituted analogs were designed and synthesized resulting in compound 6c (SLL-1206) with single-digit nanomolar activities. Compound 6c showed subtype selectivity by significantly reducing affinity for mu OR and delta OR, leading to improved physicochemical and pharmacokinetic properties compared to SLL-039.
JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Pharmacology & Pharmacy
LaTaijah C. Crawford, Sangyub Kim, Deepkamal Karelia, Diana E. Sepulveda, Daniel J. Morgan, Junxuan Lu, Angela N. Henderson-Redmond
Summary: This study demonstrates that decursinol, a metabolite of Angelica gigas Nakai, has antinociceptive and anti-allodynic effects. However, tolerance may develop to its pain-relieving effects, and these effects may be mediated by 5-HT2 and opioid receptors.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Pharmacology & Pharmacy
Ting Li, Tian Wang, Linlin Wang, Rongxia Liu, Leiming Zhang, Rong Zhai, Fenghua Fu
Summary: Rotigotine-loaded microspheres (RoMS) are sustained-release formulations that can relieve inflammatory pain and exhibit synergistic effects when combined with analgesics. The study found that RoMS produced synergistic antinociceptive effects in an inflammatory pain model, suggesting that combination therapy may reduce the drug doses required for antinociception.
EUROPEAN JOURNAL OF PHARMACOLOGY
(2021)
Article
Pharmacology & Pharmacy
Jayane Lais Dias Quintao, Amanda Cristina Reis Gonzaga, Giovane Galdino, Thiago Roberto Lima Romero, JosianeFernandes Silva, VirginiaSoares Lemos, Gabriel Henrique Campolina-Silva, Cleida Aparecida de Oliveira, GermanAnarturo Bohorquez Mahecha, IgorDimitri Gama Duarte
Summary: Tissue injury leads to the release of inflammatory mediators and nociceptive substances, contributing to hyperalgesia. The study investigated the involvement of inflammatory mediators in the modulation of inflammatory pain by the opioid system, finding that TNF-alpha, CXCL-1, and IL-beta cause hyperalgesia and the release of endogenous opioid peptides for pain control.
EUROPEAN JOURNAL OF PHARMACOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Ning Li, Jian Xiao, Jiandong Niu, Mengna Zhang, Yonghang Shi, Bowen Yu, Qinqin Zhang, Dan Chen, Nan Zhang, Quan Fang
Summary: The combination of classical opioids and N/OFQ receptor (NOP) ligands may be effective in reducing side effects and improving pain relief, but the interaction between these two receptor ligands at the peripheral level is unclear. This study suggests that the peripheral agonist DAMGO-NH2 and its combination with NOP01 can effectively manage pain without affecting motor function in mice.
Review
Pharmacology & Pharmacy
Mei-Xian Li, Qian-Qi Wei, Huan-Jun Lu
Summary: This review summarizes the current understanding of the effectiveness of ginseng in treating chronic pain and the research progress on how its active constituents regulate nociceptive responses and their mechanisms of action.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Pharmacology & Pharmacy
Zachary W. Reichenbach, Kelly DiMattio, Suren Rajakaruna, David Ambrose, William D. Cornwell, Ronald J. Tallarida, Thomas Rogers, Lee-Yuan Liu-Chen, Ronald F. Tuma, Sara Jane Ward
Summary: Non-selective cannabinoid (CB) agonists can enhance the analgesic effects of morphine but inhibit its antinociceptive tolerance. Activation of CB2 receptors can reverse allodynia and hyperalgesia in chronic pain models, and co-administration of CB2 receptor selective agonists with morphine can synergistically enhance the effects. However, the interactions between CB2 receptor selective agonist O-1966 and morphine depend on the order of administration.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Medicine, Research & Experimental
Luis Angelo Macedo Santiago, Ana Caroline Santos Ataide, Danilo de Araujo Morais, Aldilene da Silva Lima, Nathalya dos Santos Martins, Adriana Vivian Costa Araujo Dourado, Rachel Melo Ribeiro, Lidio Goncalves Lima-Neto, Joicy Cortez de Sa Sousa, Claudia Quintino da Rocha, Maria do Socorro de Sousa Cartagenes, Rafael Cardoso Carvalho, Eduardo Martins de Sousa
Summary: This study investigated the therapeutic efficacy of the ethyl acetate fraction of Bixa orellana leaves (BoEA) and ellagic acid (ElAc) in the treatment of osteoarthritis (OA) induced by monosodium iodoacetate (MIA) in rats. The results showed that BoEA and ElAc reduced inflammation and nociception, improved clinical and radiological parameters, and exhibited anti-inflammatory and analgesic properties.
BIOMEDICINE & PHARMACOTHERAPY
(2023)
Article
Biochemistry & Molecular Biology
Reine-Solange Sauer, Ivo Krummenacher, Ezgi Eylul Bankoglu, Shaobing Yang, Beatrice Oehler, Friedrich Schoeppler, Milad Mohammadi, Paul Guentzel, Adel Ben-Kraiem, Ulrike Holzgrabe, Helga Stopper, Jens A. Broscheit, Holger Braunschweig, Norbert Roewer, Alexander Brack, Heike L. Rittner
Summary: The study developed a CD-DEL complex to improve bioavailability and analgesic effects of DEL for inflammatory pain treatment. CD-DEL showed efficacy in reversing hyperalgesia and reducing tissue damage and oxidative stress in an inflammation model. Its unique antioxidative mechanism involving capturing and releasing ROS scavenger DEL makes it a promising formulation for local treatment of inflammatory pain.
ANTIOXIDANTS & REDOX SIGNALING
(2021)
Article
Chemistry, Medicinal
Ying-Ting Hsu, Shen-Ren Chen, Yung-Chiao Chang, Hsiao-Fu Chang, Teng-Kuang Yeh, Jian-Ying Chuang, Horace H. Loh, Hsing-Pang Hsieh, Shau-Hua Ueng, Shiu-Hwa Yeh
Summary: The demand for a non-addictive analgesic medication is increasing due to clinical misuse. Compound 14 is a dual agonist of the mu opioid receptor (MOR) and nociceptin-orphanin FQ opioid peptide (NOP) receptor, providing pain relief at very small doses and reducing unwanted side effects. Evaluating its effects in wild type and humanized mice can help develop a safer prescription analgesic drug.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Agata Zieba, Tuomo Laitinen, Jayendra Z. Patel, Antti Poso, Agnieszka A. Kaczor
Summary: The study successfully constructed 3D-QSAR CoMFA and CoMSIA models for a series of 31 FAAH inhibitors with 1,3,4-oxadiazol-2-one moiety, which showed good statistical parameters and were validated using various techniques. The field contributions in the CoMFA and CoMSIA models varied, influencing the ligand-enzyme interactions in different ways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)