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Increased xanthine oxidase in the thalamus and putamen in depression
Abstract
A growing body of literature suggests persistent and selective structural changes in the cortico-limbic-thalamic-striatal system in patients with recurrent depressive disorder (DD). Oxidative stress is thought to play a key role in these processes. So far, the main scientific focus has been on antioxidant enzymes in this context. For the first time, this proof of concept study examines the activity of the free radicals producing the enzyme, xanthine oxidase (XO), directly in the cortico-limbic-thalamic-striatal system of patients with recurrent depression. The activity of XO was ascertained in the cortico-limbic-thalamic-striatal regions in post-mortem brain tissue of patients with recurrent depressive episodes and individuals without any neurological or psychiatric history (7/7). We measured the XO activity in following brain areas: hippocampus, regio entorhinalis, thalamus, putamen and caudate nucleus. In this study, we report a significant increase of XO activity in the thalamus and the putamen of patients with depression. Our findings contribute to the growing body of evidence suggesting that oxidative stress plays a pivotal role in certain brain areas in recurrent depressive disorder.
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“A recent post-mortem study found increased XO activity in the thalamus and putamen patients with recurrent MDD [35].”
From Preclinical and Clinical Evidence of Antioxidant Effects of Antidepressant Agents: Implications for the Pathophysiology of Major Depressive Disorder (2012) · cites this paper as [35]
In the citing paper
“These results suggest increased ROS production in brain samples of depressive patients due to increased XO activity.”
From Preclinical and Clinical Evidence of Antioxidant Effects of Antidepressant Agents: Implications for the Pathophysiology of Major Depressive Disorder (2012) · cites this paper as [35]
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Advances of paeoniflorin in depression: the molecular mechanism and formula application
Hou, Y., Li, H., Zhu, L., Tian, Q., Feng, X., Li, Y., Bian, Y., & Wei, Y. (2025) · Frontiers in Pharmacology · doi:10.3389/fphar.2025.1614429 · Cited by 8
“For example, xanthine oxidase (XO), which catalyzes the oxidation of xanthine to produce superoxide and hydrogen peroxide, has been observed to elevate levels in the serum of depressed patients and in the thalamic region of post-mortem depressed patients (Michel et al., 2010).”
Karaaslan, Ö., Hacımusalar, Y., Bal, C., & Ercan, M. (2019) · Medical Science and Discovery · doi:10.17546/msd.488247 · Cited by 8
“A number of studies have researched the role of oxidative metabolism in MDD (7,8).”
BackgroundHe, J., Gao, Z., Li, X., Zhao, L., Tian, X., & Gao, B. (2025) · Brain Research · doi:10.1016/j.brainres.2025.149656 · Cited by 7
Polyphenols in food and food wastes: Extraction, isolation, and health applications
Fredsgaard, M., Fussy, A., Nybo, G. K., Papenbrock, J., Hulkko, L. S. S., Dadjoo, M., Chaturvedi, T., & Thomsen, M. H. (2026) · Food Chemistry Molecular Sciences · doi:10.1016/j.fochms.2025.100351 · Cited by 7
“…2006; Higgins et al., 2012; Polito et al., 2021) Kidney disease, hyperuricemia, and gout (Dawson & Walters, 2006; Furuhashi, 2020; Polito et al., 2022) Liver diseases (Battelli et al., 2001; Stirpe et al., 2002) Mental and neurological disorders (Herken et al., 2006; Michel et al., 2010) 2024).”
Yan, T., Shan, H., Wang, Z., Zou, S., Chen, Z., Yu, W., Du, Q., & Dong, X. (2023) · Neurosurgical Review · doi:10.1007/s10143-023-02233-8 · Cited by 7
“XO is apparently present in human or animal brain tissues under normal conditions [13, 14, 29].”
BackgroundEffect of electroconvulsive therapy on the oxidative metabolism in major depressive disorder
Şahin, Ş. K., Aybastı, Ö., Elboğa, G., & Altındağ, A. (2017) · Cukurova Medical Journal (Çukurova Üniversitesi Tıp Fakültesi Dergisi) · doi:10.17826/cutf.323838 · Cited by 7
Bee, R., Ahmad, M., & Verma, S. (2022) · CNS & Neurological Disorders - Drug Targets · doi:10.2174/1871527321666220516105907 · Cited by 6
Balance of Antioxidants vs. Oxidants in Perinatal Asphyxia
Rallis, D., Dermitzaki, N., Baltogianni, M. S., Kapetaniou, K., & Giapros, V. I. (2024) · Applied Sciences · doi:10.3390/app14219651 · Cited by 6
Elevated serum xanthine oxidase activities in patients with Henoch–Schonlein purpura
Chen, T., Guo, Z., Zhang, Y., & Gao, Y. (2009) · Clinical Rheumatology · doi:10.1007/s10067-009-1253-5 · Cited by 6
Association between total antioxidant capacity and prevalence of depression: NHANES 2007–2018
Liu, Y., Han, Y., Gao, Y.-Q., Sun, M., Wang, F., Wu, Z., Wang, S., Dong, Y., Zhao, J., Xin, S., et al. (2024) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2024.11.004 · Cited by 5
N -Acetylcysteine-Capped TLQP21-Containing Au Nanocages Alleviate Depression in Mice
Shi, M., Li, X., Fan, Z., Wang, Y., Li, C., Ning, Y., Ma, Y., Sun, M., Xia, X., Du, J., et al. (2025) · ACS Nano · doi:10.1021/acsnano.5c11681 · Cited by 5
Cui, Y., Hong, Y. C., Xu, Y., Jin, Z., Ji, Y., Liu, Y., Zhao, L., & Ren, L. (2024) · Journal of Affective Disorders · doi:10.1016/j.jad.2024.07.040 · Cited by 5
Valizadeh, P., Jannatdoust, P., Bagherieh, S., Cattarinussi, G., Squarcina, L., Maleki, S., Sambataro, F., Barone, Y., & Delvecchio, G. (2025) · Journal of Affective Disorders · doi:10.1016/j.jad.2025.119661 · Cited by 5
The Role of Various Types of Diets in the Treatments of Depressive Disorders
Lis, A., Maj, P., Świętek, A., & Romuk, E. B. (2025) · Medicina · doi:10.3390/medicina61101737 · Cited by 5
“Patients with depression exhibit decreased concentrations of zinc, glutathione, coenzyme Q10, and vitamins A, C, and E, alongside increased activity of pro-oxidant enzymes such as xanthine oxidase [69–71].”
Thiol/Disulfide Homeostasis: A Potential New Peripheral Biomarker in Adolescent Depression
Öztürk, M., Özkan, Y., Sapmaz, Ş. Y., Erdal, S., Taneli, F., & Kandemır, H. (2024) · Psychiatry and Clinical Psychopharmacology · doi:10.5152/pcp.2024.23744 · Cited by 4
Ke, S., Li, J., Zhao, L., Yang, J., Zhao, X., Zhang, W., Qiu, X., Yang, X., Zhou, J., Tong, Y., et al. (2022) · Oxidative Medicine and Cellular Longevity · doi:10.1155/2022/2633127 · Cited by 4
“This hypothesis is known as the “ oxidative stress hypothesis ” of MDD [4].”
Luo, S., Lai, S., Chu, L., Wang, Y., Chen, P., Ye, X., Zhuo, J., Abula, M., Liang, Y., Wei, D., et al. (2025) · Journal of Affective Disorders · doi:10.1016/j.jad.2025.03.161 · Cited by 2
Potential of an antioxidant combination Twendee X® to treat depressive disorders
You, F., Harakawa, Y., Toshikazu, Y., & Inufusa, H. (2023) · Archives of Depression and Anxiety · doi:10.17352/2455-5460.000083 · Cited by 2
“In MDD, OS is one of the main causes of structural and functional changes in the brain and preclinical and clinical studies have reported that increased ROS generation and depletion of antioxidant defenses are responsible for changes in brain structure [17-19].”
BackgroundKarimi, I., Motamedi, S., & Becker, L. A. (2017) · Metabolic Brain Disease · doi:10.1007/s11011-017-0166-2 · Cited by 2
“…will increase in diabetic liver (Desco et al. 2002), brain ischemia (Solaroglu et al. 2005), gout, heat stress, hemorrhagic shock, viral infections (Dew et al. 2005), meningitis (Vorbach et al. 2003), xanthinuria-induced autism (Zannolli et al. 2003), and recurrent depression (Michel et al. 2010).”
BackgroundPathogenetic Mechanisms of Mental Disorders: Endogenous Intoxication
Uzbekov, M. G. (2023) · Biochemistry (Moscow) · doi:10.1134/s0006297923040053 · Cited by 2
Petimani, M. S., Adake, P., & Aditya, A. (2019) · International Journal of Biochemistry and Biophysics · doi:10.13189/ijbb.2019.070101 · Cited by 2
“[13,14] A recent post mortem study found increased XO activity in the thalamus and putamen of patients with recurrent MDD.[15] It was observed that pretreatment with amitriptyline and fluoxetine associated with increased Super Oxide Dismutase activity, and no signs of cell death were observed in cultured pheochromocyt…”
BackgroundRola stresu oksydacyjnego i nitracyjnego oraz szlaku katabolitów tryptofanu w patogenezie depresji
Wigner, P., & Śliwiński, T. (2022) · Postępy Biochemii · doi:10.18388/pb.2021_436 · Cited by 1
Effects of Duloxetine on Oxidant-Antioxidant System in Rat Brain Tissues
KARAKUŞ, K., Demirci, K., Uz, E., YİĞİT, A., & Özçankaya, R. (2023) · Phoenix Medical Journal · doi:10.38175/phnx.1383064 · Cited by 1
Luo, S., Lai, S., Liao, X., Wang, Y., Chen, P., Pei, Y., Zhang, J., Zhang, Y., Zhong, S., & Jia, Y. (2025) · Asian Journal of Psychiatry · doi:10.1016/j.ajp.2025.104660 · Cited by 1
Investigating the Antidepressant Mechanism of Acupuncture with a Focus on Mitochondrial Homeostasis
Wei, Y., Ma, Z., Xu, N., He, Y., Cao, M., & Wang, L. (2026) · International Journal of General Medicine · doi:10.2147/ijgm.s584012 · Cited by 1
Wang, R., He, J., Cheng, L., Huang, Z., Miao, X., Cheng, X., Wang, Y., Lin, X., & Xia, S. (2026) · Nutrients · doi:10.3390/nu18142230 · Cited by 1
“Oxidative stress has been proposed as a key contributor to these neurological changes, as supported by both preclinical and clinical studies [42,43].”
Laux, G. (2017) · Springer eBooks · doi:10.1007/978-3-662-49295-6_67 · Cited by 2
Metadata
- Authors
- Michel, T. M., Camara, S., Tatschner, T., Frangou, S., Sheldrick, A. J., Riederer, P., & Grünblatt, E.
- Affiliations
- University of Würzburg (DE)
- RWTH Aachen University (DE)
- Corresponding author
- Michel, Tanja Maria
- Venue
- The World Journal of Biological Psychiatry
- Publisher
- Informa UK Limited
- Published
- 2010-03
- Volume
- 11
- Issue
- 2-2
- Pages
- 314-320
- ISSN
- 1562-2975 (ISSN-L)
- 1814-1412
- OpenAlex
- W2063819848
- Cited by
- 114
- References
- 74
- Citations by year
- 2026: 6 · 2025: 10 · 2024: 7 · 2023: 11 · 2022: 12 · 2021: 10 · 2020: 6 · 2019: 7 · 2018: 3 · 2017: 7 · 2016: 8 · 2015: 4 · 2014: 1 · 2013: 2 · 2012: 5
- FWCI
- 3.78
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The World Journal of Biological Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Research Portal (King's College London) (submittedVersion)
- RWTH Publications (RWTH Aachen) (submittedVersion)
- Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
- Topics
- Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
- Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Keywords
- xanthine oxidase, recurrent depression, oxidative stress, thalamus, putamen, postmortem brain, hippocampus, entorhinal cortex, caudate nucleus, free radicals
- MeSH terms
- Age Factors, Aged, Aged, 80 and over, Analysis of Variance, Brain, Depressive Disorder, Female, Hippocampus, Humans, Male, Middle Aged, Putamen, Regression Analysis, Sex Factors, Thalamus, Xanthine Oxidase, Oxidative Stress, Statistics, Nonparametric
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