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Rosenfeld CS. The placenta as a target of opioid drugs†. Biol Reprod 2022; 106:676-686. [PMID: 35024817 PMCID: PMC9040663 DOI: 10.1093/biolre/ioac003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/20/2021] [Accepted: 01/15/2022] [Indexed: 01/14/2023] Open
Abstract
Opioid drugs are analgesics increasingly being prescribed to control pain associated with a wide range of causes. Usage of pregnant women has dramatically increased in the past decades. Neonates born to these women are at risk for neonatal abstinence syndrome (also referred to as neonatal opioid withdrawal syndrome). Negative birth outcomes linked with maternal opioid use disorder include compromised fetal growth, premature birth, reduced birthweight, and congenital defects. Such infants require lengthier hospital stays necessitating rising health care costs, and they are at greater risk for neurobehavioral and other diseases. Thus, it is essential to understand the genesis of such disorders. As the primary communication organ between mother and conceptus, the placenta itself is susceptible to opioid effects but may be key to understanding how these drugs affect long-term offspring health and potential avenue to prevent later diseases. In this review, we will consider the evidence that placental responses are regulated through an endogenous opioid system. However, maternal consumption of opioid drugs can also bind and act through opioid receptors express by trophoblast cells of the placenta. Thus, we will also discuss the current human and rodent studies that have examined the effects of opioids on the placenta. These drugs might affect placental hormones associated with maternal recognition of pregnancy, including placental lactogens and human chorionic gonadotropin in rodents and humans, respectively. A further understanding of how such drugs affect the placenta may open up new avenues for early diagnostic and remediation approaches.
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Affiliation(s)
- Cheryl S Rosenfeld
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, USA
- MU Institute of Data Science and Informatics, University of Missouri, Columbia, MO, USA
- Genetics Area Program, University of Missouri, Columbia, MO, USA
- Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO, USA
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Mota-Rojas D, Orihuela A, Strappini A, Villanueva-García D, Napolitano F, Mora-Medina P, Barrios-García HB, Herrera Y, Lavalle E, Martínez-Burnes J. Consumption of Maternal Placenta in Humans and Nonhuman Mammals: Beneficial and Adverse Effects. Animals (Basel) 2020; 10:E2398. [PMID: 33333890 PMCID: PMC7765311 DOI: 10.3390/ani10122398] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022] Open
Abstract
Placentophagia is a common mammalian behavior, and the first scientific study of the potential effects of human maternal placentophagia on lactation was in 1917. More recently, in the 1970s, human placentophagia was reported in North America with a trend toward increased consumption. There are different hypotheses about the women and nonhuman mammals' motivation towards placentophagia, but few have been subject to hypotheses testing. In women, the controversy continues; on the one hand, researchers attribute benefits like increased breast milk, weight gain in newborns, decreased postpartum depression and fatigue, and improved mothers' mood. In contrast, bacterial or viral infections, hormonal, or trace elements that could become toxic for both the mother and baby are reported as possible health risks. Other reports argue a lack of scientific rigor to support the self-reported benefits of placentophagia. Also, the way the placenta is prepared (raw, cooked, dehydrated, processed, or encapsulated) alters its components, and thus the desired effects. This review provides relevant information and the different hypotheses and points of view around placentophagia. However, there are still questions to be resolved, and more studies are needed to confirm or reject the data generated so far about placentophagia in humans and nonhuman mammals.
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Affiliation(s)
- Daniel Mota-Rojas
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), 04960 Mexico City, Mexico; (D.M.-R.); (Y.H.); (E.L.)
| | - Agustín Orihuela
- Facultad de Ciencias Agropecuarias, Universidad Autónoma del Estado de Morelos, Cuernavaca, 62209 Morelos, Mexico;
| | - Ana Strappini
- Animal Science Institute, Faculty of Veterinary Sciences, Universidad Austral de Chile, 5110566 Valdivia, Chile;
| | - Dina Villanueva-García
- Division of Neonatology, National Institute of Health Hospital Infantil de México Federico Gómez, 06720 Mexico City, Mexico;
| | - Fabio Napolitano
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy;
| | - Patricia Mora-Medina
- Livestock Science Department, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), 54714 Mexico City, Mexico;
| | - Hugo B. Barrios-García
- Graduate and Research Department, Faculty of Veterinary Medicine, Universidad Autónoma de Tamaulipas, Ciudad Victoria, 87000 Tamaulipas, Mexico;
| | - Yuridia Herrera
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), 04960 Mexico City, Mexico; (D.M.-R.); (Y.H.); (E.L.)
| | - Eunice Lavalle
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), 04960 Mexico City, Mexico; (D.M.-R.); (Y.H.); (E.L.)
| | - Julio Martínez-Burnes
- Graduate and Research Department, Faculty of Veterinary Medicine, Universidad Autónoma de Tamaulipas, Ciudad Victoria, 87000 Tamaulipas, Mexico;
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