Placebo efekat u mentalnom zdravlju: psihološki, neurobiološki i etički aspekti

Ključne reči: placebo efekat, neurobiološki aspekti, psihološki mehanizmi, mentalno zdravlje, psihoterapija

Sažetak


Placebo efekat je psihobiološki fenomen u kojem očekivanja pacijenta, prethodna iskustva i socijalni kontekst utiču na zdravstvene ishode, čak i kada tretman nema farmakološki aktivni sastojak. Ključni mehanizmi uključuju očekivanja, verbalnu sugestiju, klasično uslovljavanje i socijalno-kontekstualne faktore, podržane neurobiološkim procesima koji uključuju endogene opioide, dopamin i povezane moždane puteve. U mentalnom zdravlju i psihoterapiji placebo efekti su posebno značajni, jer odnos terapeut–pacijent, empatija i verovanje u tretman mogu značajno poboljšati ishode. Etički prihvatljive primene, poput otvorenog placeba i placeba za produženo doziranje, očuvavaju autonomiju pacijenta dok koriste očekivanja i učenje za unapređenje kliničkih rezultata. Prepoznavanje i integracija placebo mehanizama u kliničku praksu naglašava interakciju psiholoških, neurobioloških i etičkih faktora, pružajući holistički pristup lečenju i poboljšavajući terapijske rezultate kod stanja kao što su depresija, anksioznost i hronični bol.

 

Reference

Munnangi S, Sundjaja JH, Singh K, Dua A, Angus LD. Placebo Effect [Internet]. National Center for Biotechnology Information; 2023 [cited 2025 Jul 21]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK513296/.

Niazi SK. Placebo Effects: Neurological Mechanisms Inducing Physiological, Organic, and Belief Responses-A Prospective Analysis. Healthcare (Basel). 2024;12(22):2314. doi: 10.3390/healthcare12222314.

Beecher HK. The powerful placebo. JAMA. 1955;159(17):1602–6. doi: 10.1001/jama.1955.02960340022006.

Benedetti F. Placebo and the new physiology of the doctor-patient relationship. Physiol Rev. 2013;93(3):1207–46. doi: 10.1152/physrev.00043.2012.

Kienle GS, Kiene H. The powerful placebo effect: fact or fiction? J Clin Epidemiol. 1997;50(12):1311–8. doi: 10.1016/s0895-4356(97)00203-5.

Wager TD, Atlas LY. The neuroscience of placebo effects: connecting context, learning and health. Nat Rev Neurosci. 2015;16(7):403–18. doi: 10.1038/nrn3976.

Knezevic NN, Sic A, Worobey S, Knezevic E. Justice for Placebo: Placebo Effect in Clinical Trials and Everyday Practice. Medicines. 2025;12(1):5. doi: 10.3390/medicines12010005.

Belcher AM, Ferré S, Martinez PE, Colloca L. Role of placebo effects in pain and neuropsychiatric disorders. Prog Neuropsychopharmacol Biol Psychiatry. 2018;87(Pt B):298–306. doi: 10.1016/j.pnpbp.2017.06.003.

Colloca L, Miller FG. The nocebo effect and its relevance for clinical practice. Psychosom Med. 2011;73(7):598–603. doi: 10.1097/PSY.0b013e3182294a50.

Planès S, Villier C, Mallaret M. The nocebo effect of drugs. Pharmacol Res Perspect. 2016;4(2):e00208. doi: 10.1002/prp2.208.

Enck P, Zipfel S. Placebo Effects in Psychotherapy: A Framework. Front Psychiatry. 2019;10:456. doi: 10.3389/fpsyt.2019.00456.

Guevarra DA, Moser JS, Wager TD, Kross E. Placebos without deception reduce self-report and neural measures of emotional distress. Nat Commun. 2020;11(1):3785. doi: 10.1038/s41467-020-17654-y.

Białaszek W, Mizak S, Ostaszewski P, Bąbel P. The role of chronic pain and pain anxiety in delay discounting of pain and monetary losses. Sci Rep. 2023;13(1):19169. doi: 10.1038/s41598-023-46378-4.

Akyirem S, Salifu Y, Bayuo J, Duodu PA, Bossman IF, Abboah-Offei M. An integrative review of the use of the concept of reassurance in clinical practice. Nurs Open. 2022;9(3):1515–35. doi: 10.1002/nop2.1102.

Koshi EB, Short CA. Placebo theory and its implications for research and clinical practice: a review of the recent literature. Pain Pract. 2007;7(1):4–20. doi: 10.1111/j.1533-2500.2007.00104.x.

Blasini M, Peiris N, Wright T, Colloca L. The Role of Patient-Practitioner Relationships in Placebo and Nocebo Phenomena. Int Rev Neurobiol. 2018;139:211–31. doi: 10.1016/bs.irn.2018.07.033.

Zubieta JK, Bueller JA, Jackson LR, Scott DJ, Xu Y, Koeppe RA, et al. Placebo effects mediated by endogenous opioid activity on mu-opioid receptors. J Neurosci. 2005;25(34):7754–62. doi: 10.1523/JNEUROSCI.0439-05.2005.

De la Fuente-Fernández R, Ruth TJ, Sossi V, Schulzer M, Calne DB, Stoessl AJ. Expectation and dopamine release: mechanism of the placebo effect in Parkinson's disease. Science. 2001;293(5532):1164–6. doi: 10.1126/science.1060937.

Meder D, Herz DM, Rowe JB, Lehéricy S, Siebner HR. The role of dopamine in the brain - lessons learned from Parkinson's disease. Neuroimage. 2019;190:79–93. doi: 10.1016/j.neuroimage.2018.11.021.

Eippert F, Bingel U, Schoell ED, Yacubian J, Klinger R, Lorenz J, et al. Activation of the opioidergic descending pain control system underlies placebo analgesia. Neuron. 2009;63(4):533–43. doi: 10.1016/j.neuron.2009.07.014.

Martucci KT, Mackey SC. Neuroimaging of Pain: Human Evidence and Clinical Relevance of Central Nervous System Processes and Modulation. Anesthesiology. 2018;128(6):1241–54. doi: 10.1097/ALN.0000000000002137.

Wampold BE, Flückiger C. The alliance in mental health care: conceptualization, evidence and clinical applications. World Psychiatry. 2023;22(1):25–41. doi: 10.1002/wps.21035.

Benedetti F. Placebo effects: understanding the mechanisms in health and disease. Oxford: Oxford University Press; 2021.

Blease CR, Bernstein MH, Locher C. Open-label placebo clinical trials: is it the rationale, the interaction or the pill? BMJ Evid Based Med. 2020;25(5):159–65. doi: 10.1136/bmjebm-2019-111209.

Schienle A, Jurinec N. Open-label placebos as adjunctive therapy for patients with depression. Contemp Clin Trials Commun. 2022;28:100948. doi: 10.1016/j.conctc.2022.100948.

Blease C, Colloca L, Kaptchuk TJ. Are open-Label Placebos Ethical? Informed Consent and Ethical Equivocations. Bioethics. 2016;30(6):407–14. doi: 10.1111/bioe.12245.

Peciña M, Zubieta JK. Molecular mechanisms of placebo responses in humans. Mol Psychiatry. 2015;20(4):416–23. doi: 10.1038/mp.2014.164.

Blease C, Kirsch I. The placebo effect and psychotherapy: Implications for theory, research, and practice. Psychol Conscious. 2016;3(2):105. doi: 10.1037/cns0000094.

Colloca L, Miller FG. How placebo responses are formed: a learning perspective. Philos Trans R Soc Lond B Biol Sci. 2011;366(1572):1859–69. doi: 10.1098/rstb.2010.0398.

Annoni M. The Ethics of Placebo Effects in Clinical Practice and Research. Int Rev Neurobiol. 2018;139:463–84. doi: 10.1016/bs.irn.2018.07.031.

Pearce JM. The placebo enigma revisited. Clin Med (Lond). 2011;11(4):340–3. doi: 10.7861/clinmedicine.11-4-340.

Tilburt JC, Emanuel EJ, Kaptchuk TJ, Curlin FA, Miller FG. Prescribing "placebo treatments": results of national survey of US internists and rheumatologists. BMJ. 2008;337:a1938. doi: 10.1136/bmj.a1938.

Howick J, Bishop FL, Heneghan C, Wolstenholme J, Stevens S, Hobbs FD, et al. Placebo use in the United Kingdom: results from a national survey of primary care practitioners. PLoS One. 2013;8(3):e58247. doi: 10.1371/journal.pone.0058247.

Kaptchuk TJ, Miller FG. Placebo Effects in Medicine. N Engl J Med. 2015;373(1):8–9. doi: 10.1056/NEJMp1504023.

Colloca L, Enck P, DeGrazia D. Relieving pain using dose-extending placebos: a scoping review. Pain. 2016;157(8):1590–8. doi: 10.1097/j.pain.0000000000000566.

Colloca L, Howick J. Placebos Without Deception: Outcomes, Mechanisms, and Ethics. Int Rev Neurobiol. 2018;138:219–40. doi: 10.1016/bs.irn.2018.01.005.

Baidwan NK, Tracy T, Chiu CY, Nawshin T, Hoenemeyer T, Riser E, et al. Open‑label placebo to treat fatigue in people with multiple sclerosis: feasibility and preliminary effects. Pilot Feasibility Stud. 2025;11:93. doi: 10.1186/s40814-025-01674-w.

Schmidt J, Reinold J, Rohn H, Schedlowski M, Engler H, Elsenbruch S, et al. Placebo effects improve sickness symptoms and drug efficacy during systemic inflammation: a randomized controlled trial in human experimental endotoxemia. BMC Med. 2025;23:455. doi: 10.1186/s12916-025-04292-8.

Motta LS, Gosmann NP, Costa MA, Jaeger MB, Frozi J, Grevet LT, et al. Placebo response in trials with patients with anxiety, obsessive-compulsive and stress disorders across the lifespan: a three-level meta-analysis. BMJ Ment Health. 2023;26(1):e300630. doi: 10.1136/bmjment-2022-300630.

Objavljeno
2026/02/25
Rubrika
Pregledni (Revijalni) rad