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Bodnar RJ. Endogenous opiates and behavior: 2022. Peptides 2023; 169:171095. [PMID: 37704079 DOI: 10.1016/j.peptides.2023.171095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023]
Abstract
This paper is the forty-fifth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2022 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, USA.
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Turnaturi R, Piana S, Spoto S, Costanzo G, Reina L, Pasquinucci L, Parenti C. From Plant to Chemistry: Sources of Active Opioid Antinociceptive Principles for Medicinal Chemistry and Drug Design. Molecules 2023; 28:7089. [PMID: 37894567 PMCID: PMC10609244 DOI: 10.3390/molecules28207089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/28/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Pain continues to be an enormous global health challenge, with millions of new untreated or inadequately treated patients reported annually. With respect to current clinical applications, opioids remain the mainstay for the treatment of pain, although they are often associated with serious side effects. To optimize their tolerability profiles, medicinal chemistry continues to study novel ligands and innovative approaches. Among them, natural products are known to be a rich source of lead compounds for drug discovery, and they hold potential for pain management. Traditional medicine has had a long history in clinical practice due to the fact that nature provides a rich source of active principles. For instance, opium had been used for pain management until the 19th century when its individual components, such as morphine, were purified and identified. In this review article, we conducted a literature survey aimed at identifying natural products interacting either directly with opioid receptors or indirectly through other mechanisms controlling opioid receptor signaling, whose structures could be interesting from a drug design perspective.
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Affiliation(s)
- Rita Turnaturi
- Department of Drug and Health Sciences, Medicinal Chemistry Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy;
| | - Silvia Piana
- Department of Drug and Health Sciences, Medicinal Chemistry Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy;
| | - Salvatore Spoto
- Department of Drug and Health Sciences, Section of Pharmacology and Toxicology, University of Catania, 95125 Catania, Italy; (S.S.); (C.P.)
| | - Giuliana Costanzo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via Santa Sofia 97, 95123 Catania, Italy;
| | - Lorena Reina
- Postgraduate School of Clinical Pharmacology, Toxicology University of Catania, Via Santa Sofia n. 97, 95100 Catania, Italy;
| | - Lorella Pasquinucci
- Department of Drug and Health Sciences, Medicinal Chemistry Section, University of Catania, Viale A. Doria 6, 95125 Catania, Italy;
| | - Carmela Parenti
- Department of Drug and Health Sciences, Section of Pharmacology and Toxicology, University of Catania, 95125 Catania, Italy; (S.S.); (C.P.)
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Camara FMS, da Conceição BC, Cardoso EKS, Santiago JCC, Albuquerque CAB, Pereira WL, Monteiro MC, Yoshioka E Silva CY, da Silva MN, Maia CF, Fontes-Junior EA. Margaritaria nobilis L.f. (Phyllanthaceae) Ethanolic Extract: Low Acute Oral Toxicity and Antinociceptive Activity. Pharmaceuticals (Basel) 2023; 16:ph16050689. [PMID: 37242472 DOI: 10.3390/ph16050689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/14/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
Margaritaria nobilis L.f. (Phyllanthaceae), a native Brazilian tree occurring mainly in the Amazon, is used in folk medicine for the treatment of abscesses (bark) and cancer-like symptoms (leaves). The present study evaluates the safety of its acute oral administration and its effects on nociception and plasma leakage. The chemical constitution of the leaf's ethanolic extract is determined by ultra-performance liquid chromatography-high-resolution mass spectrometry (LC-MS. Its acute oral toxicity is evaluated in female rats at a dose of 2000 mg/kg, evaluating the occurrence of deaths and Hippocratic, behavioral, hematological, biochemical, and histopathological changes, as well as food and water consumption and weight gain. Antinociceptive activity is evaluated in male mice with acetic-acid-induced peritonitis (APT) and formalin (FT) tests. An open field (OF) test is performed to verify possible interferences in the animals' consciousness or locomotion. LC-MS analysis shows the presence of 44 compounds classified as phenolic acid derivatives, flavonoids and O-glycosylated derivatives, and hydrolyzable tannins. No deaths or significant behavioral, histological, or biochemical changes are observed in the toxicity assessment. In nociception tests, M. nobilis extract significantly reduces abdominal contortions in APT, demonstrating selectivity for inflammatory components (FT second phase), not interfering in neuropathic components (FT first phase) or consciousness and locomotion levels in OF. Additionally, M. nobilis extract inhibits plasma acetic-acid-induced leakage. These data demonstrate the low toxicity of M. nobilis ethanolic extract, as well as its effectiveness in modulating inflammatory nociception and plasma leakage, possibly related to the flavonoids and tannins present in its composition.
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Affiliation(s)
- Fabiana Menezes S Camara
- Laboratory of Inflammation and Behavioral Pharmacology (Lafico), Health Science Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Brenda Costa da Conceição
- Laboratory of Inflammation and Behavioral Pharmacology (Lafico), Health Science Institute, Federal University of Pará, Belém 66075110, PA, Brazil
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Eloise Karoline S Cardoso
- Laboratory of Inflammation and Behavioral Pharmacology (Lafico), Health Science Institute, Federal University of Pará, Belém 66075110, PA, Brazil
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Johan Carlos C Santiago
- Laboratory of Liquid Chromatography (Labcrol), Exact and Natural Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Carlos Alberto B Albuquerque
- Laboratory of Liquid Chromatography (Labcrol), Exact and Natural Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Washington L Pereira
- Animal Pathology Laboratory, Amazon Federal Rural University, Belém 66077830, PA, Brazil
| | - Marta C Monteiro
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Consuelo Y Yoshioka E Silva
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
- Laboratory of Liquid Chromatography (Labcrol), Exact and Natural Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Milton Nascimento da Silva
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
- Laboratory of Liquid Chromatography (Labcrol), Exact and Natural Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Cristiane F Maia
- Laboratory of Inflammation and Behavioral Pharmacology (Lafico), Health Science Institute, Federal University of Pará, Belém 66075110, PA, Brazil
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
| | - Eneas A Fontes-Junior
- Laboratory of Inflammation and Behavioral Pharmacology (Lafico), Health Science Institute, Federal University of Pará, Belém 66075110, PA, Brazil
- Pharmaceutical Sciences Post-Graduation Program, Health Sciences Institute, Federal University of Pará, Belém 66075110, PA, Brazil
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