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Liaqat H, Parveen A, Kim SY. Neuroprotective Natural Products’ Regulatory Effects on Depression via Gut–Brain Axis Targeting Tryptophan. Nutrients 2022; 14:nu14163270. [PMID: 36014776 PMCID: PMC9413544 DOI: 10.3390/nu14163270] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/08/2022] [Accepted: 08/08/2022] [Indexed: 11/23/2022] Open
Abstract
L-tryptophan (Trp) contributes to regulating bilateral communication of the gut–brain axis. It undergoes three major metabolic pathways, which lead to formation of kynurenine, serotonin (5-HT), and indole derivatives (under the control of the microbiota). Metabolites from the principal Trp pathway, kynurenic acid and quinolinic acid, exhibit neuroprotective activity, while picolinic acid exhibits antioxidant activity, and 5-HT modulates appetite, sleep cycle, and pain. Abnormality in Trp plays crucial roles in diseases, including depression, colitis, ulcer, and gut microbiota-related dysfunctions. To address these diseases, the use of natural products could be a favorable alternative because they are a rich source of compounds that can modulate the activity of Trp and combat various diseases through modulating different signaling pathways, including the gut microbiota, kynurenine pathway, and serotonin pathway. Alterations in the signaling cascade pathways via different phytochemicals may help us explore the deep relationships of the gut–brain axis to study neuroprotection. This review highlights the roles of natural products and their metabolites targeting Trp in different diseases. Additionally, the role of Trp metabolites in the regulation of neuroprotective and gastroprotective activities is discussed. This study compiles the literature on novel, potent neuroprotective agents and their action mechanisms in the gut–brain axis and proposes prospective future studies to identify more pharmaceuticals based on signaling pathways targeting Trp.
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Affiliation(s)
- Humna Liaqat
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230 Domzale, Slovenia
| | - Amna Parveen
- College of Pharmacy, Gachon University Medical Campus, No. 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Korea
- Correspondence: or (A.P.); (S.Y.K.)
| | - Sun Yeou Kim
- College of Pharmacy, Gachon University Medical Campus, No. 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Korea
- Correspondence: or (A.P.); (S.Y.K.)
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Faridzadeh A, Salimi Y, Ghasemirad H, Kargar M, Rashtchian A, Mahmoudvand G, Karimi MA, Zerangian N, Jahani N, Masoudi A, Sadeghian Dastjerdi B, Salavatizadeh M, Sadeghsalehi H, Deravi N. Neuroprotective Potential of Aromatic Herbs: Rosemary, Sage, and Lavender. Front Neurosci 2022; 16:909833. [PMID: 35873824 PMCID: PMC9297920 DOI: 10.3389/fnins.2022.909833] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Hundreds of millions of people around the world suffer from neurological disorders or have experienced them intermittently, which has significantly reduced their quality of life. The common treatments for neurological disorders are relatively expensive and may lead to a wide variety of side effects including sleep attacks, gastrointestinal side effects, blood pressure changes, etc. On the other hand, several herbal medications have attracted colossal popularity worldwide in the recent years due to their availability, affordable prices, and few side effects. Aromatic plants, sage (Salvia officinalis), lavender (Lavandula angustifolia), and rosemary (Salvia Rosmarinus) have already shown anxiolytics, anti-inflammatory, antioxidant, and neuroprotective effects. They have also shown potential in treating common neurological disorders, including Alzheimer's disease, Parkinson's disease, migraine, and cognitive disorders. This review summarizes the data on the neuroprotective potential of aromatic herbs, sage, lavender, and rosemary.
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Affiliation(s)
- Arezoo Faridzadeh
- Department of Immunology and Allergy, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Yasaman Salimi
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hamidreza Ghasemirad
- Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Meraj Kargar
- Student Research Committee, Afzalipour Faculty of Medicine Kerman University of Medical Sciences, Kerman, Iran
| | - Ava Rashtchian
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Golnaz Mahmoudvand
- Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mohammad Amin Karimi
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasibeh Zerangian
- School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Negar Jahani
- Student Research Committee, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Anahita Masoudi
- Student Research Committee, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Bahare Sadeghian Dastjerdi
- Student Research Committee, Department of Midwifery, Faculty of Nursing and Midwifery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Marieh Salavatizadeh
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamidreza Sadeghsalehi
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Niloofar Deravi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Niloofar Deravi
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Effect of Physical Activity on Cognitive Function and Neurogenesis: Roles of BDNF and Oxidative Stress. ACTA ACUST UNITED AC 2020. [DOI: 10.5812/thrita.109723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Context: Cognitive disorders are one of the most common neurological problems that can be caused by lifestyle patterns, especially sedentary lifestyle, poor nutrition, exposure to a variety of toxins or diseases. Evidence Acquisition: There are various strategies recommended for the prevention and treatment of these disorders, including drug therapy, psychological therapy, dietary pattern changes, and physical activity. Results: It seems that physical activity with biological mechanisms can have beneficial effects on the central nervous system and improve cognitive function, including enhanced learning and memory, as well as reduced depression and anxiety. Conclusions: Of the major mechanisms that physical activity can affect cognitive function include increased neurogenic factors, decreased oxidative stress, decreased inflammatory mediators, and mitochondrial biogenesis. Therefore, it is recommended that people with cognitive impairments can use physical activity as an appropriate strategy to prevent and treat cognitive impairment problems.
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