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Myint SLL, Rodsiri R, Benya-Aphikul H, Rojanaratha T, Ritthidej G, Islamie R. Nasal Delivery of Asiatic Acid Ameliorates Scopolamine-Induced Memory Dysfunction in Mice. Adv Pharmacol Pharm Sci 2024; 2024:9941034. [PMID: 39286638 PMCID: PMC11405110 DOI: 10.1155/2024/9941034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Accepted: 08/23/2024] [Indexed: 09/19/2024] Open
Abstract
Asiatic acid (AA) has previously shown its neuroprotective effects, but low oral bioavailability limits its penetration into the brain. This study aimed to investigate the effect of intranasal AA administration in mice with memory dysfunction induced by scopolamine. Mice received either intranasal AA (INAA), oral AA (POAA3 or POAA30), or donepezil, followed by scopolamine for 10 days. Morris water maze (MWM) was performed on days 0-5, 30 min after treatment. Locomotor activity was conducted on day 6 followed by brain collection. In MWM, INAA treatment had significantly reduced escape latency on days 2-4, while POAA3 decreased escape latency on day 3 and POAA30 and donepezil decreased escape latency on day 4. INAA inhibited acetylcholinesterase activity, increased catalase protein expression, and decreased malondialdehyde levels in the brain tissue. Therefore, intranasal administration of AA produced a rapid onset in the protection of learning and memory deficits induced by scopolamine through acetylcholinesterase inhibition and antioxidant effect.
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Affiliation(s)
- Su Lwin Lwin Myint
- Department of Pharmacology and Physiology Faculty of Pharmaceutical Sciences Chulalongkorn University, Bangkok 10330, Thailand
| | - Ratchanee Rodsiri
- Department of Pharmacology and Physiology Faculty of Pharmaceutical Sciences Chulalongkorn University, Bangkok 10330, Thailand
- Preclinical Toxicity and Efficacy Assessment of Medicines and Chemicals Research Unit Chulalongkorn University, Bangkok 10330, Thailand
| | - Hattaya Benya-Aphikul
- Department of Pharmacology and Physiology Faculty of Pharmaceutical Sciences Chulalongkorn University, Bangkok 10330, Thailand
- Preclinical Toxicity and Efficacy Assessment of Medicines and Chemicals Research Unit Chulalongkorn University, Bangkok 10330, Thailand
| | - Tissana Rojanaratha
- Department of Pharmaceutics and Industrial Pharmacy Faculty of Pharmaceutical Sciences Chulalongkorn University, Bangkok 10330, Thailand
| | - Garnpimol Ritthidej
- Department of Pharmaceutics and Industrial Pharmacy Faculty of Pharmaceutical Sciences Chulalongkorn University, Bangkok 10330, Thailand
- Queen Saovabha Memorial Institute The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Ridho Islamie
- Department of Pharmacology and Physiology Faculty of Pharmaceutical Sciences Chulalongkorn University, Bangkok 10330, Thailand
- Department of Clinical and Community Pharmacy Faculty of Pharmacy University of Surabaya, Surabaya 60293, Indonesia
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Kuil LE, Varkevisser TMCK, Huisman MH, Jansen M, Bunt J, Compter A, Ket H, Schagen SB, Meeteren AYNSV, Partanen M. Artificial and natural interventions for chemotherapy- and / or radiotherapy-induced cognitive impairment: A systematic review of animal studies. Neurosci Biobehav Rev 2024; 157:105514. [PMID: 38135266 DOI: 10.1016/j.neubiorev.2023.105514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND Cancer survivors frequently experience cognitive impairments. This systematic review assessed animal literature to identify artificial (pharmaceutical) or natural interventions (plant/endogenously-derived) to reduce treatment-related cognitive impairments. METHODS PubMed, EMBASE, PsycINFO, Web of Science, and Scopus were searched and SYRCLE's tool was used for risk of bias assessment of the 134 included articles. RESULTS High variability was observed and risk of bias analysis showed overall poor quality of reporting. Results generally showed positive effects in the intervention group versus cancer-therapy only group (67% of 156 cognitive measures), with only 15 (7%) measures reporting cognitive impairment despite intervention. Both artificial (61%) and natural (75%) interventions prevented cognitive impairment. Artificial interventions involving GSK3B inhibitors, PLX5622, and NMDA receptor antagonists, and natural interventions utilizing melatonin, curcumin, and N-acetylcysteine, showed most consistent outcomes. CONCLUSIONS Both artificial and natural interventions may prevent cognitive impairment in rodents, which merit consideration in future clinical trials. Greater consistency in design is needed to enhance the generalizability across studies, including timing of cognitive tests and description of treatments and interventions.
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Affiliation(s)
- L E Kuil
- Division of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands; Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - T M C K Varkevisser
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, the Netherlands
| | - M H Huisman
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, the Netherlands
| | - M Jansen
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, the Netherlands
| | - J Bunt
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, the Netherlands
| | - A Compter
- Department of Neuro-Oncology, the Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | - H Ket
- Universiteitsbibliotheek, Vrije Universiteit Amsterdam, de Boelelaan 1117, 1081 HV Amsterdam, the Netherlands
| | - S B Schagen
- Division of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands
| | | | - M Partanen
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS Utrecht, the Netherlands.
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He YQ, Zhou CC, Jiang SG, Lan WQ, Zhang F, Tao X, Chen WS. Natural products for the treatment of chemotherapy-related cognitive impairment and prospects of nose-to-brain drug delivery. Front Pharmacol 2024; 15:1292807. [PMID: 38348396 PMCID: PMC10859466 DOI: 10.3389/fphar.2024.1292807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/15/2024] [Indexed: 02/15/2024] Open
Abstract
Chemotherapy-related cognitive deficits (CRCI) as one of the common adverse drug reactions during chemotherapy that manifest as memory, attention, and executive function impairments. However, there are still no effective pharmacological therapies for the treatment of CRCI. Natural compounds have always inspired drug development and numerous natural products have shown potential therapeutic effects on CRCI. Nevertheless, improving the brain targeting of natural compounds in the treatment of CRCI is still a problem to be overcome at present and in the future. Accumulated evidence shows that nose-to-brain drug delivery may be an excellent carrier for natural compounds. Therefore, we reviewed natural products with potential anti-CRCI, focusing on the signaling pathway of these drugs' anti-CRCI effects, as well as the possibility and prospect of treating CRCI with natural compounds based on nose-to-brain drug delivery in the future. In conclusion, this review provides new insights to further explore natural products in the treatment of CRCI.
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Affiliation(s)
- Yu-Qiong He
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Can-Can Zhou
- Department of Pharmacy, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Sheng-Gui Jiang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Wen-Qian Lan
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Feng Zhang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xia Tao
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Wan-Sheng Chen
- Institute of Chinese Materia Madica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, China
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Islamie R, Myint SLL, Rojanaratha T, Ritthidej G, Wanakhachornkrai O, Wattanathamsan O, Rodsiri R. Neuroprotective effect of nose-to-brain delivery of Asiatic acid in solid lipid nanoparticles and its mechanisms against memory dysfunction induced by Amyloid Beta 1-42 in mice. BMC Complement Med Ther 2023; 23:294. [PMID: 37608290 PMCID: PMC10464452 DOI: 10.1186/s12906-023-04125-2] [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: 03/24/2023] [Accepted: 08/13/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND Amyloid-β1-42 (Aβ1-42) plays an essential role in the development of the early stage of Alzheimer's disease (AD). Asiatic acid (AA), an active compound in Centella asiatica L, exhibit neuroprotective properties in previous studies. Due to its low bioavailability, the nose-to-brain delivery technique was used to enhance AA penetration in the brain. In this study, AA was also loaded in solid lipid nanoparticles (SLNs) as a strategy to increase its absorption in the nasal cavity. METHODS Memory impairment was induced via direct intracerebroventricular injection of Aβ1-42 oligomer into mouse brain. The neuroprotective effect and potential underlying mechanisms were investigated using several memory behavioral examinations and molecular techniques. RESULTS The intranasal administration of AA in SLNs attenuated learning and memory impairment induced by Aβ1-42 in Morris water maze and novel object recognition tests. AA significantly inhibited tau hyperphosphorylation of pTau-S396 and pTau-T231 and prevented astrocyte reactivity and microglial activation in the hippocampus of Aβ1-42-treated mice. It is also decreased the high levels of IL-1β, TNF-α, and malondialdehyde (MDA) in mouse brain. CONCLUSIONS These results suggested that nose-to-brain delivery of AA in SLNs could be a promising strategy to treat the early stage of AD.
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Affiliation(s)
- Ridho Islamie
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Su Lwin Lwin Myint
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Tissana Rojanaratha
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Garnpimol Ritthidej
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
- Queen Saovabha Memorial Institute, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Oraphan Wanakhachornkrai
- Physiology Unit, Department of Medical Sciences, Faculty of Sciences, Rangsit University, Pathumthani, 12000, Thailand
| | - Onsurang Wattanathamsan
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ratchanee Rodsiri
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand.
- Preclinical Toxicity and Efficacy Assessment of Medicines and Chemicals Research Unit, Chulalongkorn University, Bangkok, 10330, Thailand.
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Sritawan N, Sirichoat A, Aranarochana A, Pannangrong W, Wigmore P, Welbat JU. Protective effect of metformin on methotrexate induced reduction of rat hippocampal neural stem cells and neurogenesis. Biomed Pharmacother 2023; 162:114613. [PMID: 37001179 DOI: 10.1016/j.biopha.2023.114613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/18/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
Adult neurogenesis is a process in which the adult neural stem cells produce newborn neurons that are implicated in terms of learning and memory. Methotrexate (MTX) is a chemotherapeutic drug, which has a negative effect on memory and hippocampal neurogenesis in animal models. Metformin is an antidiabetic drug with strong antioxidant capacities. We found that metformin ameliorates MTX induced deteriorations of memory and hippocampal neurogenesis in adult rats. In this study, we focus to investigate neural stem cells, biomarkers of apoptosis, and the protein for synaptogenesis, which involves in the transcription factors of the hippocampus in rats that received metformin and MTX. Male Sprague-Dawley rats were composed of control, MTX, metformin, and MTX+metformin groups. MTX (75 mg/kg, i.v.) was given on days 7 and 14, whereas metformin (200 mg/kg, i.p.) was given for 14 days. Hippocampal neural stem cells in the subgranular zone (SGZ) were quantified using immunofluorescence staining of Sox2 and nestin. Protein expression including PSD95, Casepase-3, Bax, Bcl-2, CREB, and pCREB were determined using Western blotting. MTX-treated rats displayed decreases in Sox2 and nestin-positive cells in the SGZ. Increases in Caspase-3 and Bax levels and decreases in PSD95, Bcl-2, CREB, and pCREB protein expressions in the hippocampus were also detected. However, these negative impacts of MTX were ameliorated by co-treatment with metformin. These consequences postulate that metformin has a potential to increase neural stem cells, synaptic plasticity, decreased apoptotic activities, and transcription factors, resulting in upregulation of hippocampal neurogenesis in MTX-treated rats.
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Affiliation(s)
- Nataya Sritawan
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Anusara Aranarochana
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Wanassanan Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen's Medical Centre, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
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Ding L, Liu T, Ma J. Neuroprotective mechanisms of Asiatic acid. Heliyon 2023; 9:e15853. [PMID: 37180926 PMCID: PMC10172897 DOI: 10.1016/j.heliyon.2023.e15853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/06/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023] Open
Abstract
Asiatic acid (AA) is the most crucial component of Asiaticoside in many edible and medicinal plants. It has diverse biological activities such as anti-inflammatory, antioxidant, anti-infective, and anti-tumor. Additionally, AA has been intensively studied in the last decades. It has shown great potential in the treatment of various neurological diseases such as spinal cord injury (SCI), cerebral ischemia, epilepsy, traumatic brain injury (TBI), neural tumors, Alzheimer's disease (AD), and Parkinson's disease (PD). Moreover, AA provides pertinent data for neuroprotective signaling pathways, and its substantial neuroprotective ability makes it a novel candidate for developing drugs that target the central nervous system.
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Affiliation(s)
- Liuyun Ding
- Department of Emergency Medicine, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, 215300, China
| | - Tiantian Liu
- Shanghai Seventh's People's Hospital, An Affiliate of Shanghai University of Traditional Chinese Medicine, Shanghai, 200137, China
| | - Jin Ma
- Department of Emergency Medicine, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, 215300, China
- Corresponding author. Department of Emergency Medicine, Affiliated Kunshan Hospital of Jiangsu University, No. 91 Qianjin West Road, Kunshan, 215300, China.
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Haller OJ, Semendric I, George RP, Collins-Praino LE, Whittaker AL. The effectiveness of anti-inflammatory agents in reducing chemotherapy-induced cognitive impairment in preclinical models - A systematic review. Neurosci Biobehav Rev 2023; 148:105120. [PMID: 36906244 DOI: 10.1016/j.neubiorev.2023.105120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 03/11/2023]
Abstract
Chemotherapy-induced cognitive impairment (CICI) is a debilitating condition resulting from chemotherapy administration for cancer treatment. CICI is characterised by various cognitive impairments, including issues with learning, memory, and concentration, impacting quality of life. Several neural mechanisms are proposed to drive CICI, including inflammation, therefore, anti-inflammatory agents could ameliorate such impairments. Research is still in the preclinical stage; however, the efficacy of anti-inflammatories to reduce CICI in animal models is unknown. Therefore, a systematic review was conducted, with searches performed in PubMed, Scopus, Embase, PsycInfo and Cochrane Library. A total of 64 studies were included, and of the 50 agents identified, 41 (82%) reduced CICI. Interestingly, while non-traditional anti-inflammatory agents and natural compounds reduced impairment, the traditional agents were unsuccessful. Such results must be taken with caution due to the heterogeneity observed in terms of methods employed. Nevertheless, preliminary evidence suggests anti-inflammatory agents could be beneficial for treating CICI, although it may be critical to think beyond the use of traditional anti-inflammatories when considering which specific compounds to prioritise in development.
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Affiliation(s)
- Olivia J Haller
- School of Biomedicine, The University of Adelaide, Adelaide, South Australia 5005, Australia.
| | - Ines Semendric
- School of Biomedicine, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Rebecca P George
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, South Australia 5371, Australia
| | | | - Alexandra L Whittaker
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, South Australia 5371, Australia.
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Halder T, Patel B, Acharya N. Asiatic Acid Fabricated Nanoconstructs to Mitigate Amyloid Beta 1-42 Induced Injury in SH-SY5Y Cells In-Vitro and Ameliorates Cognitive Impairment by Dual Cholinesterase Inhibition and Attenuation of Oxidative Stress In-Vivo. Pharm Res 2023; 40:197-213. [PMID: 36376605 DOI: 10.1007/s11095-022-03428-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 10/29/2022] [Indexed: 11/16/2022]
Abstract
PURPOSE Asiatic acid (AA) is reported for its neuroprotective potential in Alzheimer's disease (AD). This present work aimed to develop AA loaded nanostructured lipid carriers (AAN) for targeting the delivery of AA into the brain and ameliorating the cognitive deficits in AD rats. METHODS AAN was optimized using the Box-Behnken design, considering 3 factors (soya lecithin, tween 80, and high pressure homogenizer (HPH) pressure) as independent variables while particle size (PS), zeta potential (ZP) and entrapment efficiency (EE) were dependent variables. Cytotoxicity assay and internalization studies of AAN were evaluated in SH-SY5Y cells and further neuroprotective efficiency on intracellular amyloid beta (Aβ) aggregation was evaluated in Aβ 1-42 treated cells with thioflavin T (ThT). The behavioral acquisition effects were evaluated in Aβ 1-42 (5 µg/ 5 µL, intracerebroventricular (ICV), unilateral) induced AD model followed by the histology and quantification of neurotransmitters levels. RESULTS The optimized AAN revealed desired PS (44.1 ± 12.4 nm), ZP (- 47.1 ± 0.017 mv) and EE (73.41 ± 2.53%) for brain targeting delivery of AA. In-vitro, AAN exhibited better neuroprotective potential than AA suspension (AAS). AA content was 1.28 folds and 2.99 folds heightened in plasma and brain respectively after the i.p. administration of AAN as compared to AAS. The results of pharmacodynamic studies manifested the AAN treatment significantly (p < 0.05) ameliorated the cognitive deficits. CONCLUSIONS Hence, developed AAN has neuroprotective potential and should be further considered as an unconventional platform in preclinical model for the management of AD.
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Affiliation(s)
- Tripti Halder
- Department of Pharmacognosy, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India
| | - Bharat Patel
- Department of Pharmacognosy, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India
| | - Niyati Acharya
- Department of Pharmacognosy, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India.
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Tuo J, Peng Y, Linghu Y, Tao M, Huang S, Xu Z. Natural products regulate mitochondrial function in cognitive dysfunction-A scoping review. Front Pharmacol 2023; 14:1091879. [PMID: 36959855 PMCID: PMC10027783 DOI: 10.3389/fphar.2023.1091879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/21/2023] [Indexed: 03/09/2023] Open
Abstract
Medicines from natural products can not only treat neurodegenerative diseases but also improve the cognitive dysfunction caused by treatments with western medicines. This study reviews the literature related to the regulation of mitochondrial participation in cognitive function by natural products. In this study, we focused on English articles in PubMed, Web of Science, and Google Scholar, from 15 October 2017, to 15 October 2022. Fourteen studies that followed the inclusion criteria were integrated, analyzed, and summarized. Several studies have shown that natural products can improve or reduce cognitive dysfunction by ameliorating mitochondrial dysfunction. These results suggest that natural products may serve as new therapeutic targets for neurodegenerative diseases.
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Affiliation(s)
- Jinmei Tuo
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Nursing, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Yan Peng
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yushuang Linghu
- Department of Nursing, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ming Tao
- Department of Nursing, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Shiming Huang
- Department of Nursing, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- *Correspondence: Shiming Huang, ; Zucai Xu,
| | - Zucai Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
- *Correspondence: Shiming Huang, ; Zucai Xu,
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Melatonin Attenuates Methotrexate-Induced Reduction of Antioxidant Activity Related to Decreases of Neurogenesis in Adult Rat Hippocampus and Prefrontal Cortex. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1596362. [PMID: 35873801 PMCID: PMC9307408 DOI: 10.1155/2022/1596362] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/01/2022] [Indexed: 01/19/2023]
Abstract
Previous studies have revealed that the side effects of anticancer drugs induce a decrease of neurogenesis. Methotrexate (MTX), one of anticancer drugs, can induce lipid peroxidation as an indicator of oxidative stress in the brain. Melatonin has been presented as an antioxidant that can prevent oxidative stress-induced neuronal damage via the activation of antioxidant enzymes associated with the increase of neurogenesis. The aims of the present study are to examine the neuroprotective effect of melatonin on the neurotoxicity of MTX on neurogenesis and the changes of protein expression and antioxidant enzyme levels in adult rat hippocampus and prefrontal cortex (PFC). Male Sprague-Dawley rats were assigned into four groups: vehicle, MTX, melatonin, and melatonin+MTX groups. The vehicle group received saline solution and 10% ethanol solution, whereas the experimental groups received MTX (75 mg/kg, i.v.) and melatonin (8 mg/kg, i.p.) treatments. After the animal examination, the brains were removed for p21 immunofluorescence staining. The hippocampus and PFC were harvested for Western blot analysis and biochemical assessments of malondialdehyde (MDA), catalase (CAT), glutathione peroxidase (GPX), and superoxide dismutase (SOD). The immunofluorescence result showed that coadministration with melatonin diminished p21-positive cells in the hippocampal dentate gyrus, indicating a decrease of cell cycle arrest. Melatonin reduced the levels of MDA and prevented the decline of antioxidant enzyme activities in rats receiving MTX. In the melatonin+MTX group, the protein expression results showed that melatonin treatment significantly upregulated synaptic plasticity and an immature neuron marker through enhancing brain derived neurotrophic factor (BDNF) and doublecortin (DCX), respectively. Moreover, melatonin ameliorated the antioxidant defense system by improving the nuclear factor erythroid 2-related factor 2 (Nrf2) in rats receiving MTX. These findings suggested that the effects of melatonin can ameliorate MTX toxicity by several mechanisms, including an increase of endogenous antioxidants and neurogenesis in adult rat hippocampus and PFC.
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Sirichoat A, Anosri T, Kaewngam S, Aranarochana A, Pannangrong W, Wigmore P, Welbat JU. Neuroprotective properties of chrysin on decreases of cell proliferation, immature neurons and neuronal cell survival in the hippocampal dentate gyrus associated with cognition induced by methotrexate. Neurotoxicology 2022; 92:15-24. [PMID: 35779630 DOI: 10.1016/j.neuro.2022.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/03/2022] [Accepted: 06/27/2022] [Indexed: 01/21/2023]
Abstract
Methotrexate (MTX) is a drug widely used for chemotherapy and can reduce cancer cell production by inhibiting dihydrofolate reductase and decreasing cancer cell growth. MTX has a neurotoxic effect on neural stem and glial cells, leading to memory deficits. Chrysin is a natural flavonoid that contains essential biological activities, such as neuroprotective and cognitive-improving properties. Therefore, the aim of the present study was to investigate the protective effect of chrysin against MTX-induced memory impairments related to hippocampal neurogenesis. Seventy-two male Sprague Dawley rats were divided into six groups: control, MTX, chrysin (10 and 30 mg/kg), and MTX+ chrysin (10 and 30 mg/kg) groups. Chrysin (10 and 30 mg/kg) was administered by oral gavage for 15 days. MTX (75 mg/kg) was administered by intravenous injection on days 8 and 15. Spatial and recognition memories were evaluated using the novel object location (NOL) and novel object recognition (NOR) tests, respectively. Moreover, cell proliferation, neuronal cell survival, and immature neurons in the subgranular zone of the hippocampal dentate gyrus were quantified by Ki-67, bromodeoxyuridine/neuronal nuclear protein (BrdU/NeuN), and doublecortin (DCX) immunohistochemistry staining. The results of the MTX group demonstrated that spatial and recognition memories were both impaired. Furthermore, cell division reduction, neuronal cell survival reduction, and immature neuron decreases were detected in the MTX group and not observed in the co-administration groups. Therefore, these results revealed that chrysin could alleviate memory and neurogenesis impairments in MTX-treated rats.
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Affiliation(s)
- Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Tanaporn Anosri
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Soraya Kaewngam
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anusara Aranarochana
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Wanassanun Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen's Medical Centre, The University of Nottingham, Nottingham, United Kingdom
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
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Saenno R, Dornlakorn O, Anosri T, Kaewngam S, Sirichoat A, Aranarochana A, Pannangrong W, Wigmore P, Welbat JU. Caffeic Acid Alleviates Memory and Hippocampal Neurogenesis Deficits in Aging Rats Induced by D-Galactose. Nutrients 2022; 14:nu14102169. [PMID: 35631310 PMCID: PMC9145046 DOI: 10.3390/nu14102169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/21/2022] [Accepted: 05/22/2022] [Indexed: 02/04/2023] Open
Abstract
Hippocampal neurogenesis occurs throughout life, but it declines with age. D-galactose (D-gal) enhances cellular senescence through oxidative stress leading to neurodegeneration and memory impairment. Caffeic acid (CA) acts as an antioxidant via decreasing brain oxidative stress. This study aims to investigate the advantages of CA in alleviating the loss of memory and neurogenesis production in the hippocampus in aged rats activated by D-gal. Fifty-four male Sprague-Dawley rats were unpredictably arranged into six groups. In the D-gal group, rats were administered D-gal (50 mg/kg) by intraperitoneal (i.p.) injection. For the CA groups, rats received 20 or 40 mg/kg CA by oral gavage. In the co-treated groups, rats received D-gal (50 mg/kg) and CA (20 or 40 mg/kg) for eight weeks. The results of novel object location (NOL) and novel object recognition (NOR) tests showed memory deficits. Moreover, a decline of neurogenesis in the hippocampus was detected in rats that received D-gal by detecting rat endothelial cell antigen-1 (RECA-1)/Ki-67, 5-bromo-2′-deoxyuridine (BrdU)/neuronal nuclear protein (NeuN), doublecortin (DCX) by means of staining to evaluate blood vessel associated proliferating cells, neuronal cell survival and premature neurons, respectively. By contrast, CA attenuated these effects. Our results postulate that CA attenuated the impairment of memory in D-gal-stimulated aging by up-regulating levels of hippocampal neurogenesis.
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Affiliation(s)
- Rasa Saenno
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Oabnithi Dornlakorn
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Tanaporn Anosri
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Soraya Kaewngam
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Apiwat Sirichoat
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Anusara Aranarochana
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Wanassanun Pannangrong
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen’s Medical Centre, The University of Nottingham, Nottingham NG7 2RD, UK;
| | - Jariya Umka Welbat
- Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (R.S.); (O.D.); (T.A.); (S.K.); (A.S.); (A.A.); (W.P.)
- Correspondence: ; Tel.: +66-84-667-6105
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Boondam Y, Tantisira MH, Tilokskulchai K, Tapechum S, Pakaprot N. Acute enhancing effect of a standardized extract of Centella asiatica (ECa 233) on synaptic plasticity: an investigation via hippocampal long-term potentiation. PHARMACEUTICAL BIOLOGY 2021; 59:367-374. [PMID: 33789075 PMCID: PMC8018467 DOI: 10.1080/13880209.2021.1893348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 02/04/2021] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
CONTEXT ECa 233 is the standardized extract of Centella asiatica (L.) Urban. (Apiaceae). It contains at least 85% of triterpenoid glycosides and yields neuroprotective and memory-enhancing effects. However, the exact molecules exerting the effects might be triterpenic acid metabolites reproduced through gut metabolism after orally ingesting C. asiatica, not triterpenoid glycosides. OBJECTIVE This study demonstrates the effect of unmetabolized ECa 233 on hippocampal synaptic plasticity after directly perfusing ECa 233 over acute brain slices. MATERIALS AND METHODS The brain slices obtained from 7-week-old male Wistar rats were randomly divided into 4 groups. We perfused either artificial cerebrospinal fluid (ACSF), 0.01% DMSO, 10 µg/mL ECa 233, or 100 µg/mL on brain slices, and measured the long-term potentiation (LTP) magnitude to determine the synaptic plasticity of hippocampal circuits in each group. RESULTS The LTP magnitude of ACSF, DMSO, 10 ug/mL ECa 233, and 100 ug/mL ECa 233 groups increased from 100% to 181.26 ± 38.19%, 148.74 ± 5.40%, 273.71 ± 56.66%, 182.17 ± 18.61%, respectively. ECa 233 at the concentration of 10 µg/mL robustly and significantly enhanced hippocampal LTP magnitude. The data indicates an improvement of the hippocampal synaptic plasticity. DISCUSSION AND CONCLUSIONS This study emphasizes the effectiveness of triterpenoid glycosides in ECa 233 on synaptic plasticity enhancement. Therefore, this study supported and complimented the known effects of C. asiatica extract on the enhancement of synaptic plasticity, and subsequently, learning and memory, suggesting that ECa 233 could be a promising memory enhancing agent.
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Affiliation(s)
- Yingrak Boondam
- Department of Physiology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | | | - Kanokwan Tilokskulchai
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sompol Tapechum
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Narawut Pakaprot
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Wang Y, Zhang H, Wang J, Yu M, Zhang Q, Yan S, You D, Shi L, Zhang L, Wang L, Wu H, Cao X. Aconiti lateralis Radix Praeparata inhibits Alzheimer's disease by regulating the complex regulation network with the core of GRIN1 and MAPK1. PHARMACEUTICAL BIOLOGY 2021; 59:311-320. [PMID: 33784489 PMCID: PMC8018400 DOI: 10.1080/13880209.2021.1900879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 01/26/2021] [Accepted: 03/04/2021] [Indexed: 06/01/2023]
Abstract
CONTEXT Current medicine for Alzheimer's disease (AD) cannot effectively reverse or block nerve injury. Traditional Chinese Medicine practice and research imply Aconiti lateralis Radix Praeparata (Fuzi) may meet this goal. OBJECTIVE Analysing the anti-AD effect of Fuzi and its potential molecular mechanism. MATERIALS AND METHODS AD model cells were treated with Fuzi in 0-300 mg/mL for 24 h in 37 °C. The cell viability (CV) and length of cell projections (LCP) for each group were observed, analysed, and standardised using control as a baseline (CVs and LCPs). The Fuzi and AD relevant genes were identified basing on databases, and the molecular mechanism of Fuzi anti-AD was predicted by network analysis. RESULTS Experiment results showed that Fuzi in 0.4 mg/mL boosted LCP (LCPs = 1.2533, p ≤ 0.05), and in 1.6-100 mg/mL increased CV (CVs from 1.1673 to 1.3321, p ≤ 0.05). Bioinformatics analysis found 17 Fuzi target genes (relevant scores ≥ 20), showing strong AD relevant signals (RMS_p ≤ 0.05, related scores ≥ 5), enriched in the pathways regulating axon growth, synaptic plasticity, cell survival, proliferation, apoptosis, and death (p ≤ 0.05). Especially, GRIN1 and MAPK1 interacted with APP protein and located in the key point of the "Alzheimer's disease" pathway. DISCUSSION AND CONCLUSIONS These results suggest that Fuzi may have therapeutic and prevention potential in AD, and GRIN1 and MAPK1 may be the core of the pathways of the Fuzi anti-AD process. Fuzi should be studied more extensively, especially for the prevention of AD.
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Affiliation(s)
- Yutao Wang
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, China
- Basic Medical College, Kunming Medical University, Kunming, China
| | - Huixiang Zhang
- Institute of Neuroscience, Basic Medical College, Kunming Medical University, Kunming, China
| | - Jing Wang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Ming Yu
- Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Bioengineering Centre, Kunming Medical University, Kunming, P.R. China
| | - Qianqian Zhang
- Basic Medical College, Kunming Medical University, Kunming, China
| | - Shan Yan
- Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Bioengineering Centre, Kunming Medical University, Kunming, P.R. China
| | - Dingyun You
- School of Public Health, Kunming Medical University, Kunming, China
| | - Lanlan Shi
- Basic Medical College, Kunming Medical University, Kunming, China
| | - Lihuan Zhang
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, China
| | - Limei Wang
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, China
| | - Hongxiang Wu
- Faculty of Rehabilitation Medicine, Kunming Medical University, Kunming, China
| | - Xue Cao
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, China
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15
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Sritawan N, Suwannakot K, Naewla S, Chaisawang P, Aranarochana A, Sirichoat A, Pannangrong W, Wigmore P, Welbat JU. Effect of metformin treatment on memory and hippocampal neurogenesis decline correlated with oxidative stress induced by methotrexate in rats. Biomed Pharmacother 2021; 144:112280. [PMID: 34628167 DOI: 10.1016/j.biopha.2021.112280] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 01/18/2023] Open
Abstract
Metformin is currently used as a first-line drug to treat patients with type 2 diabetes. Previous studies have demonstrated that metformin has antioxidant properties and reduces neuroinflammation and hippocampal neuronal cell loss, which eventually improves memory. Methotrexate (MTX) is an antimetabolite chemotherapeutic agent reported to activate cognitive impairment found in many patients. Moreover, MTX negatively affects the spatial working memory, related to neurogenesis reduction in animal models. Therefore, the present study aimed to investigate the antioxidant effect of metformin on the reduction of memory and neurogenesis caused by MTX. Male Sprague-Dawley rats were divided into four groups: control, MTX, metformin, and MTX+metformin. MTX (75 mg/kg, i.v.) was administered on days 7 and 14. Rats were administered metformin (200 mg/kg, i.p.) for 14 days. Memory was determined using novel object location (NOL) and novel object recognition (NOR) tests. Furthermore, cell cycle arrest was quantified by p21 immunostaining. Levels of neuronal protein expression, scavenging enzymes activity, and malondialdehyde (MDA) level changes in the hippocampus and prefrontal cortex were investigated. Rats receiving only MTX showed memory impairment. Decreases in scavenging enzyme activity and BDNF, DCX, and Nrf2 protein expressions levels were detected in the MTX-treated rats. In addition, MTX significantly increased p21-positive cell numbers and MDA levels. However, these adverse MTX effects were counteracted by co-administration with metformin. These results demonstrate that metformin can improve memory impairments, increase BDNF, DCX and Nrf2 protein expressions and antioxidant capacities, and decrease MDA levels in MTX-treated rats.
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Affiliation(s)
- Nataya Sritawan
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Kornrawee Suwannakot
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Salinee Naewla
- Faculty of Nursing, Ratchathani University, Ubon Ratchathani 34000, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Pornthip Chaisawang
- Faculty of Medical Science, Nakhonratchasima College, Nakhon Ratchasima 30000, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Anusara Aranarochana
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Wanassanan Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Peter Wigmore
- Queen's Medical Centre, School of Life Sciences, Medical School, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
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16
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Actions and Therapeutic Potential of Madecassoside and Other Major Constituents of Centella asiatica: A Review. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188475] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Centella asiatica is a popular herb well-known for its wide range of therapeutic effects and its use as a folk medicine for many years. Its therapeutic properties have been well correlated with the presence of asiaticoside, madecassoside, asiatic and madecassic acids, the pentacyclic triterpenes. The herb has been extensively known to treat skin conditions; nevertheless, several pre-clinical and clinical studies have scientifically demonstrated its effectiveness in other disorders. Among the active constituents that have been identified in Centella asiatica, madecassoside has been the subject of only a relatively small number of scientific reports. Therefore, this review, while including other major constituents of this plant, focuses on the therapeutic potential, pharmacokinetics and toxicity of madecassoside.
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17
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Melatonin Protects against the Side-Effects of 5-Fluorouracil on Hippocampal Neurogenesis and Ameliorates Antioxidant Activity in an Adult Rat Hippocampus and Prefrontal Cortex. Antioxidants (Basel) 2021; 10:antiox10040615. [PMID: 33923672 PMCID: PMC8074234 DOI: 10.3390/antiox10040615] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 01/08/2023] Open
Abstract
Melatonin is an endogenous hormone that exhibits antioxidant functions and neuroprotective effects. The hippocampus and the prefrontal cortex (PFC) play an important role linked to working memory. 5-fluorouracil (5-FU) can induce oxidative stress and reduce neurogenesis in the subgranular zone (SGZ) of the dentate gyrus in a rat hippocampus and these alterations are related to working memory deficits. This study aimed to determine the effect of melatonin on 5-FU-induced oxidative stress that interferes with the antioxidant enzymes and protein expression levels in a rat hippocampus and PFC. A total of 68 male Sprague Dawley rats were divided into four groups: vehicle, 5-FU, melatonin and melatonin+5-FU groups. Rats were administered 5-FU (25 mg/kg, i.v.) on days 9, 12, 15, 18 and 21 and received melatonin (8 mg/kg, i.p.) at 19:00 from day 1 to day 21 of the experiment. Lipid peroxidation was assessed by measuring malondialdehyde (MDA) levels. Antioxidant enzyme levels including glutathione peroxidase (GPX), catalase (CAT) and superoxide dismutase (SOD) were determined. p21 immunofluorescence staining and Western blotting were used to detect the cell cycle arrest and protein expression of the nuclear factor erythroid 2-related factor 2 (Nrf2), doublecortin (DCX) and brain derived neurotrophic factor (BDNF), respectively. The results showed that melatonin reduced the number of p21-positive cells in the SGZ of the dentate gyrus and increased Nrf2, DCX and BDNF protein expression in rats treated with 5-FU. Moreover, melatonin restored antioxidant enzyme levels and reduced oxidative stress in the hippocampus and PFC caused by 5-FU. These findings reveal a mechanism of the neuroprotective properties of melatonin against 5-FU in a rat hippocampus and PFC.
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18
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Zweig JA, Brandes MS, Brumbach BH, Caruso M, Wright KM, Quinn JF, Soumyanath A, Gray NE. Loss of NRF2 accelerates cognitive decline, exacerbates mitochondrial dysfunction, and is required for the cognitive enhancing effects of Centella asiatica during aging. Neurobiol Aging 2021; 100:48-58. [PMID: 33486357 PMCID: PMC7920997 DOI: 10.1016/j.neurobiolaging.2020.11.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 02/07/2023]
Abstract
The water extract of Centella asiatica (CAW) improves cognitive and mitochondrial function and activates the nuclear factor erythroid 2-related factor 2 (NRF2) regulated antioxidant response pathway in aged mice. Here we investigate whether NRF2 activation is required for the cognitive and mitochondrial effects of prolonged CAW exposure during aging. Five-month-old NRF2 knockout (NRF2KO) and wild-type mice were treated with CAW for 1, 7, or 13 months. Each cohort underwent cognitive testing and hippocampal mitochondrial analyses. Age-related cognitive decline was accelerated in NRF2KO mice and while CAW treatment improved cognitive performance in wild-type mice, it had no effect on NRF2KO animals. Hippocampal mitochondrial function also declined further with age in NRF2KO mice and greater hippocampal mitochondrial dysfunction was associated with poorer cognitive performance in both genotypes. Long-term CAW treatment did not affect mitochondrial endpoints in animals of either genotype. These data indicate that loss of NRF2 results in accelerated age-related cognitive decline and worsened mitochondrial deficits. NRF2 also appears to be required for the cognitive enhancing effects of CAW during aging.
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Affiliation(s)
- Jonathan A Zweig
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Mikah S Brandes
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Barbara H Brumbach
- Biostatistics & Design Program, Oregon Health & Science University, Portland, OR, USA
| | - Maya Caruso
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Kirsten M Wright
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Joseph F Quinn
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA; Department of Neurology and Parkinson's Disease Research Education and Clinical Care Center (PADRECC), VA Portland Healthcare System, Portland, OR, USA
| | - Amala Soumyanath
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Nora E Gray
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA.
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19
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Islam MT, Ali ES, Uddin SJ, Khan IN, Shill MC, de Castro E Sousa JM, de Alencar MVOB, Melo-Cavalcante AAC, Mubarak MS. Anti-Cancer Effects of Asiatic Acid, a Triterpene from Centilla asiatica L: A Review. Anticancer Agents Med Chem 2021; 20:536-547. [PMID: 31823705 DOI: 10.2174/1871520619666191211103006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/05/2019] [Accepted: 11/21/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Centilla asiatica L is a medicinal herb that has been widely used in folk medicine to treat various diseases. Asiatic Acid (AA), a triterpene and a known component of this herb, has been shown to display important biological activities, including anti-inflammatory, antibacterial, antidiabetic and antihyperlipidemic, neuroprotective, anxiolytic and antidepressant, hepatoprotective, pancreas protective, and cardio- protective. OBJECTIVE This review focuses on AA's anti-cancer effects on the basis of published literature found in a number of databases such as PubMed and Science Direct. Emphasis has been given to the mechanisms of action of its anti-cancer effect. METHODS A literature survey was conducted using known databases such as PubMed and Science Direct using the keywords 'Asiatic acid', pairing with 'cancer', 'tumor', 'anti-cancer effect', 'cytotoxic effect', 'anti-tumor activity', 'cell line', 'animal cancer', and 'human cancer'. RESULTS Findings suggest that AA exerts anti-cancer effects in several test systems through various pathways, including oxidative/antioxidant, anti-inflammatory, cytotoxicity, apoptotic cell death, necrosis, anti-angiogenesis, inhibition of proliferation and cell migration, and chemoprevention. CONCLUSION AA may be an effective plant-based cancer chemotherapeutic agent and a promising lead for the development of potent anticancer drugs.
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Affiliation(s)
- Muhammad T Islam
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City-700000, Vietnam.,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City-700000, Vietnam
| | - Eunus S Ali
- Gaco Pharmaceuticals Limited, Dhaka-1000, Bangladesh.,College of Medicine and Public Health, Flinders University, Bedford Park-5042, Adelaide, Australia
| | - Shaikh J Uddin
- Pharmacy Discipline, Life Science School, Khulna University, Khulna-9208, Bangladesh
| | - Ishaq N Khan
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, 25000, Pakistan
| | - Manik C Shill
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh
| | - João M de Castro E Sousa
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piaui, Teresina, 64 049-550, Brazil.,Department of Biological Sciences, Federal University of Piauí, Picos, Piauí, 64 067-670, Brazil
| | | | - Ana A C Melo-Cavalcante
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piaui, Teresina, 64 049-550, Brazil
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20
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Zweig JA, Brandes MS, Brumbach BH, Caruso M, Wright KM, Quinn JF, Soumyanath A, Gray NE. Prolonged Treatment with Centella asiatica Improves Memory, Reduces Amyloid-β Pathology, and Activates NRF2-Regulated Antioxidant Response Pathway in 5xFAD Mice. J Alzheimers Dis 2021; 81:1453-1468. [PMID: 33935097 PMCID: PMC10878128 DOI: 10.3233/jad-210271] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The medicinal herb Centella asiatica has been long been used for its neuroprotective and cognitive enhancing effects. We have previously shown that two weeks of treatment with a water extract of Centella asiatica (CAW) improves cognition and activates the endogenous antioxidant response pathway without altering amyloid-β (Aβ) plaque burden. OBJECTIVE Here, we assess the effect of long-term treatment of CAW in the 5xFAD mouse model of Aβ accumulation. METHODS Four-month-old 5xFAD mice were treated with CAW in their drinking water (2 g/L) for three months at which point they underwent cognitive testing as well as analysis of Aβ plaque levels and antioxidant and synaptic gene expression. In order to confirm the involvement of the antioxidant regulatory transcription factor NRF2 on the effects of CAW on synaptic plasticity, neurons isolated from 5xFAD mice were also treated with CAW and the targeted inhibitor ML385. RESULTS Three months of treatment with CAW improved spatial and contextual memory as well as executive function in 5xFAD mice. This improvement was accompanied by increased antioxidant gene expression and a decrease in Aβ plaque burden relative to untreated 5xFAD animals. In isolated neurons, treatment with ML385 blocked the effects of CAW on dendritic arborization and synaptic gene expression. CONCLUSION These results suggest that prolonged CAW exposure could be beneficial in Alzheimer's disease and that these effects likely involve NRF2 activation. Moreover, these findings suggest that targeting NRF2 itself may be a relevant therapeutic strategy for improving synaptic plasticity and cognitive function in Alzheimer's disease.
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Affiliation(s)
- Jonathan A. Zweig
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Mikah S. Brandes
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Barbara H. Brumbach
- Biostatistics & Design Program Core, Oregon Health & Science University, Portland, OR, USA
| | - Maya Caruso
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Kirsten M. Wright
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Joseph F. Quinn
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
- Department of Neurology and Parkinson’s Disease Research Education and Clinical Care Center (PADRECC), VA Portland Healthcare System, Portland, OR, USA
| | - Amala Soumyanath
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Nora E. Gray
- Department of Neurology, Oregon Health & Science University, Portland, OR, USA
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21
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Sun B, Wu L, Wu Y, Zhang C, Qin L, Hayashi M, Kudo M, Gao M, Liu T. Therapeutic Potential of Centella asiatica and Its Triterpenes: A Review. Front Pharmacol 2020; 11:568032. [PMID: 33013406 PMCID: PMC7498642 DOI: 10.3389/fphar.2020.568032] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022] Open
Abstract
Centella asiatica (also known as Centella asiatica (L.) Urb. or Gotu kola) is a traditional Chinese medicine with extensive medicinal value, which is commonly used in Southeast Asian countries. This study aimed to summarize the effects of C. asiatica and its main components on neurological diseases, endocrine diseases, skin diseases, cardiovascular diseases, gastrointestinal diseases, immune diseases, and gynecological diseases, as well as potential molecular mechanisms, to study the pathological mechanism of these diseases based on the changes at the molecular level. The results showed that C. asiatica and its triterpenoids had extensive beneficial effects on neurological and skin diseases, which were confirmed through clinical studies. They exhibited anti-inflammatory, anti-oxidative stress, anti-apoptotic effects, and improvement in mitochondrial function. However, further clinical studies are urgently required due to the low level of evidence and lack of patients.
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Affiliation(s)
- Boju Sun
- Second Clinical Medical College, Beijing University of Chinese Medicine, Beijing, China
| | - Lili Wu
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing, China
| | - You Wu
- Second Clinical Medical College, Beijing University of Chinese Medicine, Beijing, China
| | - Chengfei Zhang
- Second Clinical Medical College, Beijing University of Chinese Medicine, Beijing, China
| | - Lingling Qin
- Technology Department, Beijing University of Chinese Medicine, Beijing, China
| | - Misa Hayashi
- School of Pharmaceutical Sciences, Mukogawa Women’s University, Hyogo, Japan
| | - Maya Kudo
- School of Pharmaceutical Sciences, Mukogawa Women’s University, Hyogo, Japan
| | - Ming Gao
- School of Pharmaceutical Sciences, Mukogawa Women’s University, Hyogo, Japan
| | - Tonghua Liu
- Second Clinical Medical College, Beijing University of Chinese Medicine, Beijing, China
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22
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Melatonin attenuates 5-fluorouracil-induced spatial memory and hippocampal neurogenesis impairment in adult rats. Life Sci 2020; 248:117468. [PMID: 32105705 DOI: 10.1016/j.lfs.2020.117468] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/14/2020] [Accepted: 02/22/2020] [Indexed: 12/21/2022]
Abstract
AIMS Treatment with 5-fluorouracil (5-FU) can cause impairment to adult hippocampal neurogenesis, resulting in cognitive deficits. As melatonin has been shown to enhance memory and hippocampal neurogenesis in animal models, this research investigated the neuroprotective effects of melatonin against spatial memory and hippocampal neurogenesis impairment in 5-fluorouracil (5-FU)-treated rats. MATERIALS AND METHODS Four-Five weeks old male Spraque-Dawley rats weighing between 180 and 200 g were used. Animals were maintained under standard laboratory conditions with 25 °C and 12 h light/dark cycle. Animal were administered intravenous (i.v.) injections of 5-FU (25 mg/kg) 5 times every 3 days starting on day 9 of the experiment. The rats were divided into preventive, recovery, and throughout groups and co-treated with melatonin (8 mg/kg, i.p.) once daily (at 7.00 pm) for 21 days prior to, after, and throughout 5-FU treatment, respectively. Spatial memory was assessed using a novel object location (NOL) test. Hippocampal neurogenesis was then examined using Ki67, bromodeoxyuridine (BrdU), and doublecortin (DCX) immunohistochemistry staining. KEY FINDINGS Melatonin administration was able to both protect the subjects from and reverse spatial memory deficits. 5-FU was also found to reduce the generation of hippocampal newborn neurons. However, co-treatment with melatonin ameliorated the reductions in neurogenesis caused by 5-FU. SIGNIFICANCE These findings suggest that melatonin administration was able to ameliorate the 5-FU-induced spatial memory deficits associated with neurogenesis. The present work will be valuable for patients who suffer memory deficits from 5-FU chemotherapy.
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23
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Pannangrong W, Sirichoat A, Wongsiri T, Wigmore P, Welbat JU. Valproic acid withdrawal ameliorates impairments of hippocampal-spatial working memory and neurogenesis. J Zhejiang Univ Sci B 2019; 20:253-263. [PMID: 30829012 DOI: 10.1631/jzus.b1800340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Valproic acid (VPA), an agent that is used to treat epileptic seizures, can cause spatial memory impairment in adults and children. This effect is thought to be due to the ability of VPA to inhibit neurogenesis in the hippocampus, which is required for learning. We have previously used an animal model to show that VPA significantly impairs hippocampal-spatial working memory and inhibits neuronal generation in the sub-granular zone of the dentate gyrus. As there are patient reports of improvements in memory after discontinuing VPA treatment, the present study investigated the recovery of both spatial memory and hippocampal neurogenesis at two time points after withdrawal of VPA. Male Wistar rats were given intraperitoneal injections of 0.9% normal saline or VPA (300 mg/kg) twice a day for 10 d. At 1, 30, or 45 d after the drug treatment, the novel object location (NOL) test was used to examine spatial memory; hippocampal cell division was counted using Ki67 immunohistochemistry, and levels of brain-derived neurotrophic factor (BDNF) and Notch1 were measured using western immunoblotting. Spatial working memory was impaired 1 and 30 d after the final administration, but was restored to control levels by 45 d. Cell proliferation had increased to control levels at 30 and 45 d. Both markers of neurogenesis (BDNF and Notch1 levels) had returned to control levels at 45 d. These results demonstrate that memory recovery occurs over a period of six weeks after discontinuing VPA treatment and is preceded by a return of hippocampal neurogenesis to control levels.
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Affiliation(s)
- Wanassanun Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Trai Wongsiri
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen's Medical Centre, Nottingham University, Nottingham NG7 2UH, UK
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Neuroscience Research and Development Group, Khon Kaen University, Khon Kaen 40002, Thailand
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24
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Protective effects of melatonin against valproic acid-induced memory impairments and reductions in adult rat hippocampal neurogenesis. Neuroscience 2019; 406:580-593. [DOI: 10.1016/j.neuroscience.2019.02.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 02/13/2019] [Accepted: 02/14/2019] [Indexed: 01/12/2023]
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25
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Naewla S, Sirichoat A, Pannangrong W, Chaisawang P, Wigmore P, Welbat JU. Hesperidin Alleviates Methotrexate-Induced Memory Deficits via Hippocampal Neurogenesis in Adult Rats. Nutrients 2019; 11:nu11040936. [PMID: 31027240 PMCID: PMC6521088 DOI: 10.3390/nu11040936] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/18/2019] [Accepted: 04/22/2019] [Indexed: 01/25/2023] Open
Abstract
Methotrexate (MTX), a folic acid antagonist, is widely used in cancer treatment. However, treatment with MTX reduces hippocampal neurogenesis, leading to memory deficits. Hesperidin (Hsd) is a flavonoid glycoside that promotes anti-inflammation, acts as an antioxidant, and has neuroprotective properties. Consumption of Hsd enhances learning and memory. In the present study, we investigated the protective effects of Hsd against MTX-induced impairments of memory and neurogenesis; male Sprague Dawley rats were administered with a single dose of MTX (75 mg/kg) by intravenous (i.v.) injection on days 8 and 15 or Hsd (100 mg/kg) by oral gavage for 21 days. Memory was tested using novel object location (NOL) and novel object recognition (NOR) tasks. Immunofluorescence staining of Ki-67, bromodeoxyuridine (BrdU), and doublecortin (DCX) was performed to assess cell proliferation, survival, and immature neurons. The data showed that Hsd and MTX did not disable locomotor ability. The MTX animals exhibited memory deficits in both memory tests. There were significant decreases in the numbers of cell proliferation, survival, and immature neurons in the MTX animals. However, co-administration with MTX and Hsd alleviated memory loss and neurogenesis decline. These results revealed that Hsd could protect against MTX side effects in the animals in this study.
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Affiliation(s)
- Salinee Naewla
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Wanassanan Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Pornthip Chaisawang
- Faculty of Medical Science, Nakhonratchasima College, Nakhon Ratchasima 30000, Thailand.
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen's Medical Centre, Nottingham University, Nottingham NG7 2RD, UK.
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
- Neuroscience Research and Development Group, Khon Kaen University, Khon Kaen 40002, Thailand.
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26
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Sirichoat A, Krutsri S, Suwannakot K, Aranarochana A, Chaisawang P, Pannangrong W, Wigmore P, Welbat JU. Melatonin protects against methotrexate-induced memory deficit and hippocampal neurogenesis impairment in a rat model. Biochem Pharmacol 2019; 163:225-233. [PMID: 30802430 DOI: 10.1016/j.bcp.2019.02.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/08/2019] [Indexed: 12/11/2022]
Abstract
Methotrexate (MTX) is a chemotherapy agent linked to cognitive deficits in cancer patients received chemotherapy treatment. MTX decreases cell proliferation in the hippocampus, which is concomitant with cognitive deficits in animal models. The present study aimed to investigate the disadvantages of MTX on cognition associated with cell division, survival, and immature neurons involved in hippocampal neurogenesis, as well as the practical neuroprotective effects of melatonin. Male Sprague Dawley rats were given two injections of MTX (75 mg/kg) on days 8 and 15 followed by Leucovorin (LCV, 6 mg/kg) at hours 18, 26, 42, 50 via i.p. injection. Some rats received co-treatment with melatonin (8 mg/kg, i.p. injection) for 15 days before and during MTX administration (preventive), 15 days after MTX administration (recovery), or both (30 days total; throughout). Hippocampal-dependent memory was examined using novel objection location (NOL) and novel object recognition (NOR) tests. Cell division, survival and immature neurons in the subgranular zone (SGZ) in the hippocampus were evaluated using immunofluorescence staining. Rats given MTX/LCV were found to have cognitive memory deterioration based on the NOL and NOR tests. Moreover, reductions in cell division, cell survival, and the numbers of immature neurons were detected in the MTX/LCV group when compared to the controls. This damage was not observed in rats in the preventive, recovery, or throughout groups. These findings reveal that melatonin has the potential to diminish the negative effects of MTX on memory and neurogenesis. This also indicates the benefit of melatonin co-administration in patients who undergo chemotherapy treatment.
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Affiliation(s)
- Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Suchada Krutsri
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Kornrawee Suwannakot
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anusara Aranarochana
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Pornthip Chaisawang
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Wanassanun Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen's Medical Centre, The University of Nottingham, Nottingham, United Kingdom
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neuroscience Research and Development Group, Khon Kaen University, Khon Kaen 40002, Thailand.
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27
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Asiatic Acid Attenuated Aluminum Chloride-Induced Tau Pathology, Oxidative Stress and Apoptosis Via AKT/GSK-3β Signaling Pathway in Wistar Rats. Neurotox Res 2019; 35:955-968. [PMID: 30671870 DOI: 10.1007/s12640-019-9999-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 12/22/2018] [Accepted: 01/08/2019] [Indexed: 10/27/2022]
Abstract
Asiatic acid (AA), a triterpenoid present in Centella asiatica, possesses the ability to cross blood brain barrier and received considerable attention for its neuroprotective role. We have reported the benefit of AA against aluminum chloride (AlCl3)-induced amyloid pathology, enhanced acetylcholine esterase (AChE) activity, and inflammation in Alzheimer's disease (AD) like model rats. Based on that, to find the exact mechanism of action of AA, the present study was designed to evaluate the oxidative stress, tau pathology, apoptosis, and Akt/GSK3β signaling pathway on AlCl3-induced neurotoxicity in Wistar rats. AD-like pathology was induced by oral administration of AlCl3 (100 mg/kg b.w.) for 6 weeks, which demonstrated a significant reduction in spatial memory performance, anxiety, and motor dysfunction and diminished the expression of cyclin-dependent kinase 5 (CDK 5-enzyme implicated in the phosphorylation of tau proteins), pTau, oxidative stress, and apoptosis, whereas oral ingestion of AA (75 mg/kg b.w.) for 7 weeks attenuated the above-said indices, which could be by activating Akt/GSK3β pathway. Current results suggested that AA could be able to modulate various pathological features of AD and could hold promise in AD treatment.
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28
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Nagoor Meeran MF, Goyal SN, Suchal K, Sharma C, Patil CR, Ojha SK. Pharmacological Properties, Molecular Mechanisms, and Pharmaceutical Development of Asiatic Acid: A Pentacyclic Triterpenoid of Therapeutic Promise. Front Pharmacol 2018; 9:892. [PMID: 30233358 PMCID: PMC6131672 DOI: 10.3389/fphar.2018.00892] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 07/23/2018] [Indexed: 12/16/2022] Open
Abstract
Asiatic acid (AA) is a naturally occurring aglycone of ursane type pentacyclic triterpenoids. It is abundantly present in many edible and medicinal plants including Centella asiatica that is a reputed herb in many traditional medicine formulations for wound healing and neuropsychiatric diseases. AA possesses numerous pharmacological activities such as antioxidant and anti-inflammatory and regulates apoptosis that attributes its therapeutic effects in numerous diseases. AA showed potent antihypertensive, nootropic, neuroprotective, cardioprotective, antimicrobial, and antitumor activities in preclinical studies. In various in vitro and in vivo studies, AA found to affect many enzymes, receptors, growth factors, transcription factors, apoptotic proteins, and cell signaling cascades. This review aims to represent the available reports on therapeutic potential and the underlying pharmacological and molecular mechanisms of AA. The review also also discusses the challenges and prospects on the pharmaceutical development of AA such as pharmacokinetics, physicochemical properties, analysis and structural modifications, and drug delivery. AA showed favorable pharmacokinetics and found bioavailable following oral or interaperitoneal administration. The studies demonstrate the polypharmacological properties, therapeutic potential and molecular mechanisms of AA in numerous diseases. Taken together the evidences from available studies, AA appears one of the important multitargeted polypharmacological agents of natural origin for further pharmaceutical development and clinical application. Provided the favorable pharmacokinetics, safety, and efficacy, AA can be a promising agent or adjuvant along with currently used modern medicines with a pharmacological basis of its use in therapeutics.
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Affiliation(s)
- Mohamed Fizur Nagoor Meeran
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | | | - Kapil Suchal
- Department of Pharmacology, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Charu Sharma
- Department of Internal Meicine, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Chandragouda R. Patil
- Department of Pharmacology, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Shreesh K. Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
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29
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Welbat JU, Chaisawang P, Pannangrong W, Wigmore P. Neuroprotective Properties of Asiatic Acid against 5-Fluorouracil Chemotherapy in the Hippocampus in an Adult Rat Model. Nutrients 2018; 10:E1053. [PMID: 30096914 PMCID: PMC6115773 DOI: 10.3390/nu10081053] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/07/2018] [Accepted: 08/08/2018] [Indexed: 12/11/2022] Open
Abstract
5-fluorouracil or 5-FU (a chemotherapeutic medication) has been revealed to induce memory deficits in many cancer patients. Asiatic acid (AA) is a triterpenoid extract from Centella asiatica. This compound can ameliorate intracellular oxidative stress caused by chemotherapy drugs. Recent studies have shown that AA is capable of inhibiting neuronal generation and memory deficit produced by 5-FU chemotherapy. This study aimed to assess the molecular mechanisms of AA related to hippocampal neurogenesis and memory in rats receiving 5-FU. Male Sprague Dawley rats were given AA (30 mg/kg) orally and given 5-FU (25 mg/kg) by i.v. injection 5 times. Some rats were given AA for 20 days before and during 15-FU treatment (preventive), some received AA for 20 days after 5-FU treatment (recovery), and some underwent treatment with AA throughout the time of the experiment (throughout) for 40 days. Treatment with 5-FU caused significant reductions in Notch1, sex determining region Y-box 2 (SOX2), nestin, doublecortin (DCX), and nuclear factor erythroid 2-related factor 2 (Nrf2) levels within the hippocampus. In addition, 5-FU significantly increased p21 positive cell number in the subgranular zone (SGZ) and malondialdehyde (MDA) levels in the hippocampus. Administration with both AA and 5-FU in prevention and throughout was able to prevent decreases in Notch1 SOX2, nestin, DCX, and Nrf2 caused by 5-FU. Treatment with AA also led to decreases in p21 positive cells and MDA levels in the hippocampus. These findings exhibit that AA has the ability to counteract the down-regulation of neurogenesis within the hippocampus and memory deficits caused by 5-FU via inhibiting oxidative stress and increasing neuroprotective properties.
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Affiliation(s)
- Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
- Neuroscience Research and Development Group, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Pornthip Chaisawang
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Wanassanun Pannangrong
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Peter Wigmore
- School of Life Sciences, Medical School, Queen's Medical Centre, Nottingham University, Nottingham NG7 2RD, UK.
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30
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Gray NE, Zweig JA, Caruso M, Martin MD, Zhu JY, Quinn JF, Soumyanath A. Centella asiatica increases hippocampal synaptic density and improves memory and executive function in aged mice. Brain Behav 2018; 8:e01024. [PMID: 29920983 PMCID: PMC6043711 DOI: 10.1002/brb3.1024] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Centella asiatica is a plant used for centuries to enhance memory. We have previously shown that a water extract of Centella asiatica (CAW) attenuates age-related spatial memory deficits in mice and improves neuronal health. Yet the effect of CAW on other cognitive domains remains unexplored as does its mechanism of improving age-related cognitive impairment. This study investigates the effects of CAW on a variety of cognitive tasks as well as on synaptic density and mitochondrial and antioxidant pathways. METHODS Twenty-month-old CB6F1 mice were treated with CAW (2 mg/ml) in their drinking water for 2 weeks prior to behavioral testing. Learning, memory, and executive function were assessed using the novel object recognition task (NORT), object location memory task (OLM), and odor discrimination reversal learning (ODRL) test. Tissue was collected for Golgi analysis of spine density as well as assessment of mitochondrial, antioxidant, and synaptic proteins. RESULTS CAW improved performance in all behavioral tests suggesting effects on hippocampal and cortical dependent memory as well as on prefrontal cortex mediated executive function. There was also an increase in synaptic density in the treated animals, which was accompanied by increased expression of the antioxidant response gene NRF2 as well as the mitochondrial marker porin. CONCLUSIONS These data show that CAW can increase synaptic density as well as antioxidant and mitochondrial proteins and improve multiple facets of age-related cognitive impairment. Because mitochondrial dysfunction and oxidative stress also accompany cognitive impairment in many pathological conditions this suggests a broad therapeutic utility of CAW.
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Affiliation(s)
- Nora E Gray
- Department of Neurology, Oregon Health and Science University, Portland, Oregon
| | - Jonathan A Zweig
- Department of Neurology, Oregon Health and Science University, Portland, Oregon.,Department of Cell, Developmental and Cancer Biology, Oregon Health and Science University, Portland, Oregon
| | - Maya Caruso
- Department of Neurology, Oregon Health and Science University, Portland, Oregon
| | - Marjoen D Martin
- Department of Neurology, Oregon Health and Science University, Portland, Oregon
| | - Jennifer Y Zhu
- Department of Neurology, Oregon Health and Science University, Portland, Oregon.,Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, Oregon
| | - Joseph F Quinn
- Department of Neurology, Oregon Health and Science University, Portland, Oregon.,Department of Neurology and Parkinson's Disease Research Education and Clinical Care Center (PADRECC), VA Portland Healthcare System, Portland, Oregon
| | - Amala Soumyanath
- Department of Neurology, Oregon Health and Science University, Portland, Oregon
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