1. Opium use and subsequent incidence of cancer: results from the Golestan Cohort Study
   Mahdi Sheikh et al, 2020, The Lancet Global Health CrossRef
2. Retraction Note: m6A modification-mediated CBX8 induction regulates stemness and chemosensitivity of colon cancer via upregulation of LGR5
   Yi Zhang et al, 2023, Molecular Cancer CrossRef
3. Activated δ-opioid receptors inhibit hydrogen peroxide-induced apoptosis in liver cancer cells through the PKC/ERK signaling pathway
   KAIQI JIA et al, 2014, Molecular Medicine Reports CrossRef
4. Synthetic Opioid Use and Common Injection-associated Viruses: Expanding the Translational Research Agenda
   Jason T. Blackard et al, 2019, Current HIV Research CrossRef
5. The synthetic opioid fentanyl increases HIV replication and chemokine co-receptor expression in vitro
   Ling Kong et al, 2022, Journal of NeuroVirology CrossRef
6. The paradoxical role of methionine enkephalin in tumor responses
   Yali Tuo et al, 2020, European Journal of Pharmacology CrossRef
7. Investigating the Protective Effect of Ellagic Acid on Cholemic Nephropathy in Cholestatic Rats
   Ali Kargar et al, 2024, Archives of Neuroscience CrossRef
8. Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug-resistant human hepatocellular carcinoma cells to 5-FU
   BO TANG et al, 2016, Molecular Medicine Reports CrossRef
9. Opioid Receptor-Mediated and Non-Opioid Receptor-Mediated Roles of Opioids in Tumour Growth and Metastasis
   Claudia A. Scroope et al, 2021, Frontiers in Oncology CrossRef
10. Design, synthesis and evaluation of 111In labeled DOTA-conjugated tetrapeptides having high affinity and selectivity for mu opioid receptors
    John R. Lever et al, 2019, Nuclear Medicine and Biology CrossRef
11. Inhibition of δ-opioid receptors induces brain glioma cell apoptosis through the mitochondrial and protein kinase C pathways
    LIXIANG ZHOU et al, 2013, Oncology Letters CrossRef
12. Opioid receptors beyond pain control: The role in cancer pathology and the debated importance of their pharmacological modulation
    Marco Carli et al, 2020, Pharmacological Research CrossRef
13. Investigating the role of endogenous opioid system in chloroquine‐induced phospholipidosis in rat liver by morphological, biochemical and molecular modelling studies
    Mohammad Reza Malek et al, 2020, Clinical and Experimental Pharmacology and Physiology CrossRef
14. Drug screening strategies using metal-based luminescent probes
    Guodong Li et al, 2021, TrAC Trends in Analytical Chemistry CrossRef
15. microRNA-874 suppresses tumor proliferation and metastasis in hepatocellular carcinoma by targeting the DOR/EGFR/ERK pathway
    Yi Zhang et al, 2018, Cell Death & Disease CrossRef
16. Tumor Targeting and Pharmacokinetics of a Near-Infrared Fluorescent-Labeled δ-Opioid Receptor Antagonist Agent, Dmt-Tic-Cy5
    Amanda Shanks Huynh et al, 2016, Molecular Pharmaceutics CrossRef
17. Gluten Exorphins Promote Cell Proliferation through the Activation of Mitogenic and Pro-Survival Pathways
    Federico Manai et al, 2023, International Journal of Molecular Sciences CrossRef
18. Drugs of Abuse and Their Impact on Viral Pathogenesis
    Jason Blackard et al, 2021, Viruses CrossRef
19. Comparison and analysis of the animal models used to study the effect of morphine on tumour growth and metastasis
    B Afsharimani et al, 2015, British Journal of Pharmacology CrossRef
20. Recent advances on the δ opioid receptor: from trafficking to function
    Louis Gendron et al, 2015, British Journal of Pharmacology CrossRef
21. The Role of Opioid Receptors in Cancer
    Siddhant Bhoir et al, 2023, Advanced Biology CrossRef
22. [D-Ala2, D-Leu5] Enkephalin Attenuates Hepatic Ischemia–Reperfusion Injury in Cirrhotic Rats
    Jueying Liu et al, 2022, Frontiers in Surgery CrossRef
23. The Various Functions of Opioids in Pathophysiological Conditions
    Huimin Gao et al, 2015, Neural Functions of the Delta-Opioid Receptor CrossRef
24. Opium Use and the Risk of Liver Cancer: A Case–Control Study
    Maryam Marzban et al, 2023, Cancer Prevention Research CrossRef
25. The synthetic opioid fentanyl enhances viral replication in vitro
    Ling Kong et al, 2021, PLOS ONE CrossRef
26. The Synthetic Opioid Fentanyl Increases HIV Replication and Chemokine Co-Receptor Expression in Lymphocyte Cell Lines
    Janani Madhuravasal Krishnan et al, 2023, Viruses CrossRef
27. Endogenous opiates and behavior: 2013
    Richard J. Bodnar, 2014, Peptides CrossRef