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Brinza I, Boiangiu RS, Honceriu I, Abd-Alkhalek AM, Eldahshan OA, Dumitru G, Hritcu L, Todirascu-Ciornea E. Investigating the Potential of Essential Oils from Citrus reticulata Leaves in Mitigating Memory Decline and Oxidative Stress in the Scopolamine-Treated Zebrafish Model. PLANTS (BASEL, SWITZERLAND) 2024; 13:1648. [PMID: 38931080 PMCID: PMC11207389 DOI: 10.3390/plants13121648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/04/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024]
Abstract
Petitgrain essential oil (PGEO) is derived from the water distillation process on mandarin (Citrus reticulata) leaves. The chemical constituents of PGEO were analyzed by gas chromatography/mass spectrometry (GC/MS) method which revealed the presence of six compounds (100%). The major peaks were for methyl-N-methyl anthranilate (89.93%) and γ-terpinene (6.25%). Over 19 days, zebrafish (Tubingen strain) received PGEO (25, 150, and 300 μL/L) before induction of cognitive impairment with scopolamine immersion (SCOP, 100 μM). Anxiety-like behavior and memory of the zebrafish were assessed by a novel tank diving test (NTT), Y-maze test, and novel object recognition test (NOR). Additionally, the activity of acetylcholinesterase (AChE) and the extent of the brain's oxidative stress were explored. In conjunction, in silico forecasts were used to determine the pharmacokinetic properties of the principal compounds discovered in PGEO, employing platforms such as SwissADME, Molininspiration, and pKCSM. The findings provided evidence that PGEO possesses the capability to enhance memory by AChE inhibition, alleviate SCOP-induced anxiety during behavioral tasks, and diminish brain oxidative stress.
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Affiliation(s)
- Ion Brinza
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (I.B.); (R.S.B.); (I.H.); (E.T.-C.)
| | - Razvan Stefan Boiangiu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (I.B.); (R.S.B.); (I.H.); (E.T.-C.)
| | - Iasmina Honceriu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (I.B.); (R.S.B.); (I.H.); (E.T.-C.)
| | | | - Omayma A. Eldahshan
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt;
- Center of Drug Discovery Research and Development, Ain Shams University, Cairo 11566, Egypt
| | - Gabriela Dumitru
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (I.B.); (R.S.B.); (I.H.); (E.T.-C.)
| | - Lucian Hritcu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (I.B.); (R.S.B.); (I.H.); (E.T.-C.)
| | - Elena Todirascu-Ciornea
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, 700506 Iasi, Romania; (I.B.); (R.S.B.); (I.H.); (E.T.-C.)
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Lazarova M, Stefanova M, Denev P, Taseva T, Vassileva V, Tasheva K. Neuroprotective Effect of Marrubium vulgare Extract in Scopolamine-Induced Cognitive Impairment in Rats: Behavioral and Biochemical Approaches. BIOLOGY 2024; 13:426. [PMID: 38927306 PMCID: PMC11201232 DOI: 10.3390/biology13060426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024]
Abstract
The potential of Marrubium vulgare to alleviate scopolamine (Sco)-induced deficits in spatial working memory has drawn considerable scientific interest. This effect is partly attributed to its potent antioxidant and acetylcholinesterase inhibitory (AChEI) activities. This study examined the effects of M. vulgare extract, standardized to marrubiin content, on recognition memory in healthy and Sco-treated rats. Male Wistar rats (200-250 g) were divided into four groups. The extract was orally administered for 21 days and Sco (2 mg/kg) was intraperitoneally injected for 11 consecutive days. Memory performance was assessed using the novel object recognition test. Levels of acetylcholine (ACh), noradrenaline (NA), serotonin (Sero), and brain-derived neurotrophic factor (BDNF) and the phosphorylation of cAMP response element-binding protein (p-CREB) were evaluated in the cortex and hippocampus via ELISA. BDNF and CREB expression levels were assessed using RT-PCR. The results showed that M. vulgare significantly alleviated Sco-induced memory impairment, preserved cholinergic function in the hippocampus, increased NA levels in the brain, and restored pCREB expression in the cortex following Sco-induced reduction. In healthy rats, the extract upregulated BDNF, pCREB, and Bcl2 expression. Our findings indicate that the neuroprotective effects of M. vulgare may be linked to the modulation of cholinergic function, regulation of NA neurotransmission, and influence on key memory-related molecules.
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Affiliation(s)
- Maria Lazarova
- Institute of Neurobiology, Bulgarian Academy of Science, 1113 Sofia, Bulgaria;
| | - Miroslava Stefanova
- Institute of Neurobiology, Bulgarian Academy of Science, 1113 Sofia, Bulgaria;
| | - Petko Denev
- Laboratory of Biologically Active Substances, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 4000 Plovdiv, Bulgaria;
| | - Teodora Taseva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Block 21, 1113 Sofia, Bulgaria; (T.T.); (K.T.)
| | - Valya Vassileva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Block 21, 1113 Sofia, Bulgaria; (T.T.); (K.T.)
| | - Krasimira Tasheva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Block 21, 1113 Sofia, Bulgaria; (T.T.); (K.T.)
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Dong Y, Hu Q, Zhao L, Ma G, Ma N, Zhang J, Ji Y, Liu L. A novel neuroprotective peptide YVYAETY identified and screened from Flammulina velutipes protein hydrolysates attenuates scopolamine-induced cognitive impairment in mice. Food Funct 2024; 15:6082-6094. [PMID: 38757389 DOI: 10.1039/d4fo00871e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Flammulina velutipes protein hydrolysates are known for their abundant amino acids and excellent developmental values. This study aimed to identify and screen neuroprotective peptides from F. velutipes protein hydrolysates in vitro and validate the protective effects of YVYAETY on memory impairment in scopolamine-induced mice. The F. velutipes protein was hydrolyzed by simulated gastrointestinal digestion, followed by purification through ultrafiltration and gel chromatography. The fraction exhibiting the strongest neuroprotective activity was analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The main identified peptides (SDLKPADF, WNDHYY, YVYAETY, and WFHPLF) effectively mitigated excessive ROS production by increasing SOD and GSH-px activities while inhibiting cell apoptosis and mitochondrial membrane potential (MMP) collapse against oxidative stress in Aβ25-35-induced HT22 cells. By molecular docking, the interaction between peptides and the active site of the Keap1-Kelch domain reveals their capacity to regulate the Keap1/Nrf2/HO-1 pathway. In vitro, the peptide YVYAETY had the best effect and can be further validated in vivo. The behavioral tests showed that YVYAETY improved scopolamine-induced cognitive impairment in mice. YVYAETY also alleviated neuron damage including neuron vacuolation and pyknotic nuclei in the hippocampus. Furthermore, it significantly inhibited oxidative stress and suppressed the activation of the Nrf2 pathway. Therefore, this study revealed that YVYAETY had the potential to serve as a novel neuroprotective agent.
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Affiliation(s)
- Yutong Dong
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Qiuhui Hu
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Liyan Zhao
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Gaoxing Ma
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Ning Ma
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Junmiao Zhang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yang Ji
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Li Liu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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Galbo-Thomma LK, Epperly PM, Blough BE, Landavazo A, Saldaña SJ, Carroll FI, Czoty PW. Cognitive-Enhancing Effects of Acetylcholine Receptor Agonists in Group-Housed Cynomolgus Monkeys Who Drink Ethanol. J Pharmacol Exp Ther 2024; 389:258-267. [PMID: 38135508 PMCID: PMC11125785 DOI: 10.1124/jpet.123.001854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/20/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
The cognitive impairments that are often observed in patients with alcohol use disorder (AUD) partially contribute to the extremely low rates of treatment initiation and adherence. Brain acetylcholine receptors (AChR) mediate and modulate cognitive and reward-related behavior, and their distribution can be altered by long-term heavy drinking. Therefore, AChRs are promising pharmacotherapeutic targets for treating the cognitive symptoms of AUD. In the present study, the procognitive efficacy of two AChR agonists, xanomeline and varenicline, were evaluated in group-housed monkeys who self-administered ethanol for more than 1 year. The muscarinic AChR antagonist scopolamine was used to disrupt performance of a serial stimulus discrimination and reversal (SDR) task designed to probe cognitive flexibility, defined as the ability to modify a previously learned behavior in response to a change in reinforcement contingencies. The ability of xanomeline and varenicline to remediate the disruptive effects of scopolamine was compared between socially dominant and subordinate monkeys, with lighter and heavier drinking histories, respectively. We hypothesized that subordinate monkeys would be more sensitive to all three drugs. Scopolamine dose-dependently impaired performance on the serial SDR task in all monkeys at doses lower than those that produced nonspecific impairments (e.g., sedation); its potency did not differ between dominant and subordinate monkeys. However, both AChR agonists were effective in remediating the scopolamine-induced deficit in subordinate monkeys but not in dominant monkeys. These findings suggest xanomeline and varenicline may be effective for enhancing cognitive flexibility in individuals with a history of heavy drinking. SIGNIFICANCE STATEMENT: Procognitive effects of two acetylcholine (ACh) receptor agonists were assessed in group-housed monkeys who had several years' experience drinking ethanol. The muscarinic ACh receptor agonist xanomeline and the nicotinic ACh receptor agonist varenicline reversed a cognitive deficit induced by the muscarinic ACh receptor antagonist scopolamine. However, this effect was observed only in lower-ranking (subordinate) monkeys and not higher-ranking (dominant monkeys). Results suggest that ACh agonists may effectively remediate alcohol-induced cognitive deficits in a subpopulation of those with alcohol use disorder.
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Affiliation(s)
- Lindsey K Galbo-Thomma
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
| | - Phillip M Epperly
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
| | - Bruce E Blough
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
| | - Antonio Landavazo
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
| | - Santiago J Saldaña
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
| | - F Ivy Carroll
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
| | - Paul W Czoty
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina (L.K.G.-T., P.M.E., S.J.S., P.W.C.) and Center for Drug Discovery, Research Triangle Institute, Research Triangle Park, North Carolina (B.E.B., A.L., F.I.C.)
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Salling MC, Pleil KE. A Little "Re-Cognition" Goes a Long Way for Pro-Cognitive Therapeutics in Alcohol Studies. J Pharmacol Exp Ther 2024; 389:254-257. [PMID: 38772715 DOI: 10.1124/jpet.123.002058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/02/2024] [Indexed: 05/23/2024] Open
Affiliation(s)
- Michael C Salling
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center, New Orleans, Louisiana (M.C.S.); and Department of Pharmacology, Weill Cornell Medicine, Cornell University, New York, New York (K.E.P.)
| | - Kristen E Pleil
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center, New Orleans, Louisiana (M.C.S.); and Department of Pharmacology, Weill Cornell Medicine, Cornell University, New York, New York (K.E.P.)
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Waiker DK, Verma A, Gajendra TA, Namrata, Roy A, Kumar P, Trigun SK, Srikrishna S, Krishnamurthy S, Davisson VJ, Shrivastava SK. Design, synthesis, and biological evaluation of some 2-(3-oxo-5,6-diphenyl-1,2,4-triazin-2(3H)-yl)-N-phenylacetamide hybrids as MTDLs for Alzheimer's disease therapy. Eur J Med Chem 2024; 271:116409. [PMID: 38663285 DOI: 10.1016/j.ejmech.2024.116409] [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: 02/13/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 05/13/2024]
Abstract
Inspite of established symptomatic relief drug targets, a multi targeting approach is highly in demand to cure Alzheimer's disease (AD). Simultaneous inhibition of cholinesterase (ChE), β secretase-1 (BACE-1) and Dyrk1A could be promising in complete cure of AD. A series of 18 diaryl triazine based molecular hybrids were successfully designed, synthesized, and tested for their hChE, hBACE-1, Dyrk1A and Aβ aggregation inhibitory potentials. Compounds S-11 and S-12 were the representative molecules amongst the series with multi-targeted inhibitory effects. Compound S-12 showed hAChE inhibition (IC50 value = 0.486 ± 0.047 μM), BACE-1 inhibition (IC50 value = 0.542 ± 0.099 μM) along with good anti-Aβ aggregation effects in thioflavin-T assay. Only compound S-02 of the series has shown Dyrk1A inhibition (IC50 value = 2.000 ± 0.360 μM). Compound S-12 has also demonstrated no neurotoxic liabilities against SH-SY5Y as compared to donepezil. The in vivo behavioral studies of the compound S-12 in the scopolamine- and Aβ-induced animal models also demonstrated attanuation of learning and memory functions in rats models having AD-like characteristics. The ex vivo studies, on the rat hippocampal brain demonstrated reduction in certain biochemical markers of the AD brain with a significant increase in ACh level. The Western blot and Immunohistochemistry further revealed lower tau, APP and BACE-1 molecular levels. The drosophilla AD model also revealed improved eyephenotype after treatment with compound S-12. The molecular docking studies of the compounds suggested that compound S-12 was interacting with the ChE-PAS & CAS residues and catalytic dyad residues of the BACE-1 enzymes. The 100 ns molecular dynamics simulation studies of the ligand-protein complexed with hAChE and hBACE-1 also suggested stable ligand-protein confirmation throughout the simulation run.
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Affiliation(s)
- Digambar Kumar Waiker
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology - Banaras Hindu University, Varanasi, 221005, India
| | - Akash Verma
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology - Banaras Hindu University, Varanasi, 221005, India
| | - T A Gajendra
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi, 221005, India
| | - Namrata
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Anima Roy
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Pradeep Kumar
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Surendra Kumar Trigun
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Saripella Srikrishna
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sairam Krishnamurthy
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi, 221005, India
| | - Vincent Jo Davisson
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, USA
| | - Sushant Kumar Shrivastava
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology - Banaras Hindu University, Varanasi, 221005, India.
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7
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Saha P, Ajgaonkar S, Maniar D, Sahare S, Mehta D, Nair S. Current insights into transcriptional role(s) for the nutraceutical Withania somnifera in inflammation and aging. Front Nutr 2024; 11:1370951. [PMID: 38765810 PMCID: PMC11099240 DOI: 10.3389/fnut.2024.1370951] [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: 01/15/2024] [Accepted: 04/15/2024] [Indexed: 05/22/2024] Open
Abstract
The health-beneficial effects of nutraceuticals in various diseases have received enhanced attention in recent years. Aging is a continuous process wherein physiological activity of an individual declines over time and is characterized by various indefinite hallmarks which contribute toward aging-related comorbidities in an individual which include many neurodegenerative diseases, cardiac problems, diabetes, bone-degeneration, and cancer. Cellular senescence is a homeostatic biological process that has an important function in driving aging. Currently, a growing body of evidence substantiates the connection between epigenetic modifications and the aging process, along with aging-related diseases. These modifications are now being recognized as promising targets for emerging therapeutic interventions. Considering that almost all the biological processes are modulated by RNAs, numerous RNA-binding proteins have been found to be linked to aging and age-related complexities. Currently, studies have shed light on the ability of the nutraceutical Withania somnifera (Ashwagandha) to influence RNA expression, stability, and processing, offering insights into its mechanisms of action. By targeting RNA-related pathways, Withania somnifera may exhibit promising effects in ameliorating age-associated molecular changes, which include modifications in gene expression and signaling networks. This review summarizes the potential role of Withania somnifera as a nutraceutical in modulating RNA-level changes associated with aging, encompassing both in vitro and in vivo studies. Taken together, the putative role(s) of Withania in modulation of key RNAs will provide insights into understanding the aging process and facilitate the development of various preventive and therapeutic strategies employing nutraceuticals for healthy aging.
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Affiliation(s)
- Praful Saha
- PhytoVeda Pvt. Ltd., Mumbai, India
- Viridis Biopharma Pvt. Ltd., Mumbai, India
| | - Saiprasad Ajgaonkar
- PhytoVeda Pvt. Ltd., Mumbai, India
- Viridis Biopharma Pvt. Ltd., Mumbai, India
| | - Dishant Maniar
- PhytoVeda Pvt. Ltd., Mumbai, India
- Viridis Biopharma Pvt. Ltd., Mumbai, India
| | - Simran Sahare
- PhytoVeda Pvt. Ltd., Mumbai, India
- Viridis Biopharma Pvt. Ltd., Mumbai, India
| | - Dilip Mehta
- PhytoVeda Pvt. Ltd., Mumbai, India
- Viridis Biopharma Pvt. Ltd., Mumbai, India
| | - Sujit Nair
- PhytoVeda Pvt. Ltd., Mumbai, India
- Viridis Biopharma Pvt. Ltd., Mumbai, India
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Yu Q, Qiu X, Zhong J, Cao C, Liao Y, Zeng Z, Zhang D, Yan C. Structural identification and anti-neuroinflammatory effect of a heteropolysaccharide ATP50-3 from Acorus tatarinowii rhizome. Int J Biol Macromol 2024; 266:131254. [PMID: 38565362 DOI: 10.1016/j.ijbiomac.2024.131254] [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: 08/14/2023] [Revised: 03/03/2024] [Accepted: 03/28/2024] [Indexed: 04/04/2024]
Abstract
Acorus tatarinowii, a famous traditional Chinese medicine, is used for the clinical treatment of memory impairment and dementia. In this research, AT50, the crude polysaccharide extracted from A. tatarinowii rhizome, significantly improved the memory and learning ability of mice with Alzheimer's disease (AD) and exerted excellent anti-neuroinflammatory effects. More importantly, AT50 returned the levels of NO, TNF-α, IL-1β, PGE-2, and IL-6 in AD mouse brains to normal levels. To identify the active ingredients in AT50, a heteropolysaccharide ATP50-3 was obtained from AT50. Structural analysis indicated ATP50-3 consisted of α-L-Araf-(1→, →2)-α-L-Araf-(1→, →3)-α-L-Araf-(1→, →5)-α-L-Araf-(1→, α-D-Xylp-(1→, →3,4)-β-D-Xylp-(1→, →3)-α-D-Galp-(1→, →3,6)-α-D-Galp-(1→, →6)-4-OAc-α-D-Galp-(1→, →3,4,6)-α-D-Galp-(1→, →4)-α-D-Glcp-(1→, →2,3,6)-β-D-Glcp-(1→, →4,6)-α-D-Manp-(1→, →3,4)-α-L-Rhap-(1→, →4)-α-D-GalpA-(1→, and →4)-α-D-GlcpA-(1 → residues and terminated with Xyl and Ara. Additionally, ATP50-3 significantly inhibited the release of proinflammatory factors in lipopolysaccharide-stimulated BV2 cells. ATP50-3 may be an active constituent of AT50, responsible for its anti-neuroinflammatory effects, with great potential to treat AD.
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Affiliation(s)
- Qian Yu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Xian Qiu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jing Zhong
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Chao Cao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yuechan Liao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zhiwei Zeng
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Dawei Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Chunyan Yan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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9
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Singh A, Verma A, Bhardwaj B, Saraf P, Kumar H, Jain N, Waiker DK, Gajendra TA, Krishnamurthy S, Shrivastava SK. Structure-Guided Design, Synthesis, and Biological Evaluation of Peripheral Anionic Site Selective and Brain Permeable Novel Oxadiazole-Piperazine Conjugates against Alzheimer's Disease with Antioxidant Potential. ACS OMEGA 2024; 9:18169-18182. [PMID: 38680351 PMCID: PMC11044217 DOI: 10.1021/acsomega.3c10276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 05/01/2024]
Abstract
Alzheimer's disease (AD) is a multifactorial and emerging neurological disorder, which has invoked researchers to develop multitargeted ligands. Herein, hybrid conjugates of 5-phenyl-1,3,4-oxadiazole and piperazines were rationally designed, synthesized, and pharmacologically evaluated against hAChE, hBChE, and hBACE-1 enzymes for the management of AD. Among the series, compound 5AD comprising pyridyl substitution at terminal nitrogen of piperazine contemplated as a paramount lead compound (hAChE, IC50 = 0.103 ± 0.0172 μM, hBChE, IC50 ≥ 10 μM, and hBACE-1, IC50 = 1.342 ± 0.078 μM). Compound 5AD showed mixed-type enzyme inhibition in enzyme kinetic studies against the hAChE enzyme. In addition, compound 5AD revealed a significant displacement of propidium iodide from the peripheral anionic site (PAS) of hAChE and excellent blood-brain barrier (BBB) permeability in a parallel artificial membrane permeation assay (PAMPA). Besides, 5AD also exhibited anti-Aβ aggregation activity in self- and AChE-induced thioflavin T assay. Further, compound 5AD has shown significant improvement in learning and memory (p < 0.001) against the in vivo scopolamine-induced cognitive dysfunction mice model. The ex vivo study implied that after treatment with compound 5AD, there was a decrease in AChE and malonaldehyde (MDA) levels with an increase in catalase (CAT, oxidative biomarkers) in the hippocampal brain homogenate. Hence, compound 5AD could be regarded as a lead compound and further be explored in the treatment of AD.
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Affiliation(s)
- Abhinav Singh
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Akash Verma
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Bhagwati Bhardwaj
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Poorvi Saraf
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Hansal Kumar
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Nishi Jain
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Digambar Kumar Waiker
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - T A Gajendra
- Neurotherapeutics
Research Laboratory, Department of Pharmaceutical Engineering &
Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Sairam Krishnamurthy
- Neurotherapeutics
Research Laboratory, Department of Pharmaceutical Engineering &
Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
| | - Sushant K. Shrivastava
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
& Technology, Indian Institute of Technology,
(Banaras Hindu University), Varanasi 221005, India
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10
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Wang W, Yang J, Liang D, Yao L, Ma L. Prophylactic and therapeutic inhalation of two essential oils ameliorates scopolamine-induced cognitive impairment in mice. Nat Prod Res 2024:1-9. [PMID: 38557211 DOI: 10.1080/14786419.2024.2334335] [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: 10/11/2023] [Accepted: 03/13/2024] [Indexed: 04/04/2024]
Abstract
Clover and lemongrass essential oils of contrasting composition, at three concentration levels (1%, 5%, 10%), were administrated via prophylactic and therapeutic inhalation to scopolamine-treated mice. Chemical analysis showed that clover oil was dominant in eugenol (47.69%) and lemongrass free of eugenol but mainly containing monoterpenoids of comparable proportions. Animal behavioural and brain biochemical tests showed that injection of scopolamine caused memory and learning deficit in mice while prophylactic and therapeutic inhalation of two oils at moderate to high concentrations all obviously reversed the cognitive impairment via inhibiting acetylcholinesterase activities, oxidation and inflammation. Lemongrass essential oil with diverse monoterpenoids can be as effective as or a little bit more potent than eugenol-rich clover essential oil possibly due to the synergistic effect of various monoterpenoids. These findings implied that sniffing of such aroma recipes could be a promising complementary approach for the mitigation of Alzheimer's disease-related cognitive impairment.
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Affiliation(s)
- Wencui Wang
- Research and Development Center of Aromatic Plants, School of Design, Shanghai Jiao Tong University, Shanghai, China
| | - Jingqi Yang
- Research and Development Center of Aromatic Plants, School of Design, Shanghai Jiao Tong University, Shanghai, China
| | - Decheng Liang
- Guangdong Yuecheng Technology Co., Ltd, Jiangmen City, Guangdong Province, China
| | - Lei Yao
- Research and Development Center of Aromatic Plants, School of Design, Shanghai Jiao Tong University, Shanghai, China
| | - Li Ma
- Research and Development Center of Aromatic Plants, School of Design, Shanghai Jiao Tong University, Shanghai, China
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11
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Lerose V, Ponticelli M, Benedetto N, Carlucci V, Lela L, Tzvetkov NT, Milella L. Withania somnifera (L.) Dunal, a Potential Source of Phytochemicals for Treating Neurodegenerative Diseases: A Systematic Review. PLANTS (BASEL, SWITZERLAND) 2024; 13:771. [PMID: 38592845 PMCID: PMC10976061 DOI: 10.3390/plants13060771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 04/11/2024]
Abstract
Withania somnifera (L.) Dunal is a medicinal plant belonging to the traditional Indian medical system, showing various therapeutic effects such as anti-cancer, anti-inflammatory, anti-microbial, anti-diabetic, and hepatoprotective activity. Of great interest is W. somnifera's potential beneficial effect against neurodegenerative diseases, since the authorized medicinal treatments can only delay disease progression and provide symptomatic relief and are not without side effects. A systematic search of PubMed and Scopus databases was performed to identify preclinical and clinical studies focusing on the applications of W. somnifera in preventing neurodegenerative diseases. Only English articles and those containing the keywords (Withania somnifera AND "neurodegenerative diseases", "neuroprotective effects", "Huntington", "Parkinson", "Alzheimer", "Amyotrophic Lateral Sclerosis", "neurological disorders") in the title or abstract were considered. Reviews, editorials, letters, meta-analyses, conference papers, short surveys, and book chapters were not considered. Selected articles were grouped by pathologies and summarized, considering the mechanism of action. The quality assessment and the risk of bias were performed using the Cochrane Handbook for Systematic Reviews of Interventions checklist. This review uses a systematic approach to summarize the results from 60 investigations to highlight the potential role of W. somnifera and its specialized metabolites in treating or preventing neurodegenerative diseases.
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Affiliation(s)
- Valentina Lerose
- Department of Science, University of Basilicata, V.le Ateneo Lucano 10, 85100 Potenza, Italy; (V.L.); (N.B.); (V.C.); (L.L.)
| | - Maria Ponticelli
- Department of Science, University of Basilicata, V.le Ateneo Lucano 10, 85100 Potenza, Italy; (V.L.); (N.B.); (V.C.); (L.L.)
| | - Nadia Benedetto
- Department of Science, University of Basilicata, V.le Ateneo Lucano 10, 85100 Potenza, Italy; (V.L.); (N.B.); (V.C.); (L.L.)
| | - Vittorio Carlucci
- Department of Science, University of Basilicata, V.le Ateneo Lucano 10, 85100 Potenza, Italy; (V.L.); (N.B.); (V.C.); (L.L.)
| | - Ludovica Lela
- Department of Science, University of Basilicata, V.le Ateneo Lucano 10, 85100 Potenza, Italy; (V.L.); (N.B.); (V.C.); (L.L.)
| | - Nikolay T. Tzvetkov
- Institute of Molecular Biology “Roumen Tsanev”, Department of Biochemical Pharmacology & Drug Design, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria;
| | - Luigi Milella
- Department of Science, University of Basilicata, V.le Ateneo Lucano 10, 85100 Potenza, Italy; (V.L.); (N.B.); (V.C.); (L.L.)
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12
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Verma A, Waiker DK, Singh N, Roy A, Singh N, Saraf P, Bhardwaj B, Krishnamurthy S, Trigun SK, Shrivastava SK. Design, Synthesis, and Biological Investigation of Quinazoline Derivatives as Multitargeting Therapeutics in Alzheimer's Disease Therapy. ACS Chem Neurosci 2024; 15:745-771. [PMID: 38327209 DOI: 10.1021/acschemneuro.3c00653] [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] [Indexed: 02/09/2024] Open
Abstract
An efficient and promising method of treating complex neurodegenerative diseases like Alzheimer's disease (AD) is the multitarget-directed approach. Here in this work, a series of quinazoline derivatives (AV-1 to AV-21) were rationally designed, synthesized, and biologically evaluated as multitargeted directed ligands against human cholinesterase (hChE) and human β-secretase (hBACE-1) that exhibit moderate to good inhibitory effects. Compounds AV-1, AV-2, and AV-3 from the series demonstrated balanced and significant inhibition against these targets. These compounds also displayed excellent blood-brain barrier permeability via the PAMPA-BBB assay. Compound AV-2 significantly displaced propidium iodide (PI) from the acetylcholinesterase-peripheral anionic site (AChE-PAS) and was found to be non-neurotoxic at the maximum tested concentration (80 μM) against differentiated SH-SY5Y cell lines. Compound AV-2 also prevented AChE- and self-induced Aβ aggregation in the thioflavin T assay. Additionally, compound AV-2 significantly ameliorated scopolamine and Aβ-induced cognitive impairments in the in vivo behavioral Y-maze and Morris water maze studies, respectively. The ex vivo and biochemical analysis further revealed good hippocampal AChE inhibition and the antioxidant potential of the compound AV-2. Western blot and immunohistochemical (IHC) analysis of hippocampal brain revealed reduced Aβ, BACE-1, APP/Aβ, and Tau molecular protein expressions levels. The pharmacokinetic analysis of compound AV-2 demonstrated significant oral absorption with good bioavailability. The in silico molecular modeling studies of lead compound AV-2 moreover demonstrated a reasonable binding profile with AChE and BACE-1 enzymes and stable ligand-protein complexes throughout the 100 ns run. Compound AV-2 can be regarded as the lead candidate and could be explored more for AD therapy.
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Affiliation(s)
- Akash Verma
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Digambar Kumar Waiker
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Neha Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Anima Roy
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Namrata Singh
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Poorvi Saraf
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Bhagwati Bhardwaj
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Sairam Krishnamurthy
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Surendra Kumar Trigun
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sushant Kumar Shrivastava
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
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13
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Thongsopha C, Chaiwut T, Thaweekhotr P, Sudwan P, Phasukdee N, Quiggins R. Aegle marmelos (L.) Leaf Extract Improves Symptoms of Memory Loss Induced by Scopolamine in Rats. Foods 2024; 13:627. [PMID: 38397604 PMCID: PMC10888157 DOI: 10.3390/foods13040627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024] Open
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease that results in memory impairment. Aegle marmelos (L.) Correa (AM) is used as a traditional medicine. AM leaves have the potential to inhibit acetylcholinesterase activity. This study used scopolamine to induce AD in rats. The aim of this study was to investigate the effects of AM leaf extract using this model. Motor and memory functions were tested by the motor activity and Morris water maze (MWM) tests, respectively. The density of the synaptophysin and dendritic spines in the CA1 were detected by immunofluorescence and Golgi impregnation, respectively. The hippocampal histology was reviewed by H&E staining. After the treatment, the latency times in the MWM tests of the AD groups reduced, while the motor activities showed no difference. The density of the synaptophysin of the AD groups increased after the treatments, and that of the dendritic spines also increased in all AD groups post-treatment. The hippocampal tissue also recovered. AM leaf extract can improve cognitive impairment in AD models by maintaining the presynaptic vesicle proteins and dendritic spines in a dose-dependent manner.
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Affiliation(s)
- Chanida Thongsopha
- The Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (C.T.); (P.S.); (N.P.)
- Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Thanasit Chaiwut
- The Department of General Education, Kanchanabhishek Institute of medical and Public Health Technology, Nonthaburi 11150, Thailand;
| | - Pornnarez Thaweekhotr
- The School of Integrative Medicine, Mae Fah Luang University, Chiang Rai 57100, Thailand;
| | - Paiwan Sudwan
- The Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (C.T.); (P.S.); (N.P.)
| | - Noppadol Phasukdee
- The Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (C.T.); (P.S.); (N.P.)
| | - Ranida Quiggins
- The Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (C.T.); (P.S.); (N.P.)
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14
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Chen L, Jiang L, Shi X, Yang J, Wang R, Li W. Constituents, pharmacological activities, pharmacokinetic studies, clinical applications, and safety profile on the classical prescription Kaixinsan. Front Pharmacol 2024; 15:1338024. [PMID: 38362144 PMCID: PMC10867185 DOI: 10.3389/fphar.2024.1338024] [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: 11/14/2023] [Accepted: 01/10/2024] [Indexed: 02/17/2024] Open
Abstract
Kaixinsan (KXS) is a noteworthy classical prescription, which consists of four Chinese medicinal herbs, namely Polygalae Radix, Ginseng Radix et Rhizoma, Poria, and Acori Tatarinowii Rhizoma. KXS was initially documented in the Chinese ancient book Beiji Qianjin Yaofang written by Sun Simiao of the Tang Dynasty in 652 A.D. As a traditional Chinese medicine (TCM) prescription, it functions to nourish the heart and replenish Qi, calm the heart tranquilize the mind, and excrete dampness. Originally used to treat amnesia, it is now also effective in memory decline and applied to depression. Although there remains an abundance of literature investigating KXS from multiple aspects, few reviews summarize the features and research, which impedes better exploration and exploitation of KXS. This article intends to comprehensively analyze and summarize up-to-date information concerning the chemical constituents, pharmacology, pharmacokinetics, clinical applications, and safety of KXS based on the scientific literature, as well as to examine possible scientific gaps in current research and tackle issues in the next step. The chemical constituents of KXS primarily consist of saponins, xanthones, oligosaccharide esters, triterpenoids, volatile oils, and flavonoids. Of these, saponins are the predominant active ingredients, and increasing evidence has indicated that they exert therapeutic properties against mental disease. Pharmacokinetic research has illustrated that the crucial exposed substances in rat plasma after KXS administration are ginsenoside Re (GRe), ginsenoside Rb1 (GRb1), and polygalaxanthone III (POL). This article provides additional descriptions of the safety. In this review, current issues are highlighted to guide further comprehensive research of KXS and other classical prescriptions.
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Affiliation(s)
- Liping Chen
- School of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
- Department of Pharmacy, The 940th Hospital of Joint Logistic Support Force of PLA, Lanzhou, China
| | - Lin Jiang
- School of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Xiaoyu Shi
- School of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Jihong Yang
- School of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Rong Wang
- Department of Pharmacy, The 940th Hospital of Joint Logistic Support Force of PLA, Lanzhou, China
| | - Wenbin Li
- Department of Pharmacy, The 940th Hospital of Joint Logistic Support Force of PLA, Lanzhou, China
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15
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Long J, Qin F, Luo J, Zhong G, Huang S, Jing L, Yi T, Liu J, Jiang N. Design, synthesis, and biological evaluation of novel capsaicin-tacrine hybrids as multi-target agents for the treatment of Alzheimer's disease. Bioorg Chem 2024; 143:107026. [PMID: 38103330 DOI: 10.1016/j.bioorg.2023.107026] [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: 09/13/2023] [Revised: 11/18/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
A series of novel hybrid compounds were designed, synthesized, and utilized as multi-target drugs to treat Alzheimer's disease (AD) by connecting capsaicin and tacrine moieties. The biological assays indicated that most of these compounds demonstrated strong inhibition of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activities with IC50 values in the nanomolar, as well as good blood-brain barrier permeability. Among the synthesized hybrids, compound 5s displayed the most balanced inhibitory effect on hAChE (IC50 = 69.8 nM) and hBuChE (IC50 = 68.0 nM), and exhibited promising inhibitory activity against β-secretase-1 (BACE-1) (IC50 = 3.6 µM). Combining inhibition kinetics and molecular model analysis, compound 5s was shown to be a mixed inhibitor affecting both the catalytic active site (CAS) and peripheral anionic site (PAS) of hAChE. Additionally, compound 5s showed low toxicity in PC12 and BV2 cell assays. Moreover, compound 5s demonstrated good tolerance at the dose of up to 2500 mg/kg and exhibited no hepatotoxicity at the dose of 3 mg/kg in mice, and it could effectively improve memory ability in mice. Taken together, these findings suggest that compound 5s is a promising and effective multi-target agent for the potential treatment of AD.
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Affiliation(s)
- Juanyue Long
- Department of Pharmacy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021, PR China
| | - Fengxue Qin
- Blood Transfusion Department, Affiliated Hospital of Youjiang Medical University For Nationalities, Baise, Guangxi 533000, PR China
| | - Jinchong Luo
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330006, PR China
| | - Guohui Zhong
- Department of Pharmacy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021, PR China
| | - Shutong Huang
- Department of Pharmacy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021, PR China
| | - Lin Jing
- Department of Pharmacy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021, PR China
| | - Tingzhuang Yi
- Department of Oncology, Affiliated Hospital of Youjiang Medical University For Nationalities, Baise, Guangxi 533000, PR China.
| | - Jing Liu
- Department of Pharmacy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021, PR China; School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330006, PR China.
| | - Neng Jiang
- Department of Pharmacy, Guangxi Medical University Cancer Hospital, Nanning, Guangxi 530021, PR China.
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16
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Ni H, Liu M, Cao M, Zhang L, Zhao Y, Yi L, Li Y, Liu L, Wang P, Du Q, Zhou H, Dong Y. Sinomenine regulates the cholinergic anti-inflammatory pathway to inhibit TLR4/NF-κB pathway and protect the homeostasis in brain and gut in scopolamine-induced Alzheimer's disease mice. Biomed Pharmacother 2024; 171:116190. [PMID: 38278026 DOI: 10.1016/j.biopha.2024.116190] [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: 11/23/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
Sinomenine (SIN), an alkaloid extracted from the Chinese herbal medicine Sinomenium acutum, has great potential in anti-inflammatory, immune regulation, analgesic and sedative, and is already a clinical drug for the treatment of rheumatoid arthritis in China. Our previous studies show SIN inhibits inflammation by regulating ɑ7nAChR, a key receptor of cholinergic anti-inflammatory pathway (CAP), which plays an important role in regulating peripheral and central nervous system inflammation. Growing evidence supports the cholinergic dysregulation and inflammatory responses play the key role in the pathogenesis of AD. The intervention effects of SIN on AD by regulating CAP and homeostasis in brain and gut were analyzed for the first time in the present study using scopolamine-induced AD model mice. Behavioral tests were used to assess the cognitive performance. The neurons loss, cholinergic function, inflammation responses, biological barrier function in the mouse brain and intestinal tissues were evaluated through a variety of techniques, and the gut microbiota was detected using 16SrRNA sequencing. The results showed that SIN significantly inhibited the cognitive decline, dysregulation of cholinergic system, peripheral and central inflammation, biological barrier damage as well as intestinal flora disturbance caused by SCOP in mice. More importantly, SIN effectively regulated CAP to suppress the activation of TLR4/NF-κB and protect the homeostasis in brain and gut to alleviate cognitive impairment.
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Affiliation(s)
- Haojie Ni
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Muqiu Liu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Mindie Cao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Lingyu Zhang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Yijing Zhao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Lang Yi
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Yanwu Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Liang Liu
- State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, PR China
| | - Peixun Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China
| | - Qun Du
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China.
| | - Hua Zhou
- State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, PR China.
| | - Yan Dong
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, PR China.
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Korde DS, Humpel C. A Combination of Heavy Metals and Intracellular Pathway Modulators Induces Alzheimer Disease-like Pathologies in Organotypic Brain Slices. Biomolecules 2024; 14:165. [PMID: 38397402 PMCID: PMC10887098 DOI: 10.3390/biom14020165] [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: 12/06/2023] [Revised: 01/17/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that is characterized by amyloid-beta (Aβ) plaques and tau neurofibrillary tangles (NFT). Modelling aspects of AD is challenging due to its complex multifactorial etiology and pathology. The present study aims to establish a cost-effective and rapid method to model the two primary pathologies in organotypic brain slices. Coronal hippocampal brain slices (150 µm) were generated from postnatal (day 8-10) C57BL6 wild-type mice and cultured for 9 weeks. Collagen hydrogels containing either an empty load or a mixture of human Aβ42 and P301S aggregated tau were applied to the slices. The media was further supplemented with various intracellular pathway modulators or heavy metals to augment the appearance of Aβ plaques and tau NFTs, as assessed by immunohistochemistry. Immunoreactivity for Aβ and tau was significantly increased in the ventral areas in slices with a mixture of human Aβ42 and P301S aggregated tau compared to slices with empty hydrogels. Aβ plaque- and tau NFT-like pathologies could be induced independently in slices. Heavy metals (aluminum, lead, cadmium) potently augmented Aβ plaque-like pathology, which developed intracellularly prior to cell death. Intracellular pathway modulators (scopolamine, wortmannin, MHY1485) significantly boosted tau NFT-like pathologies. A combination of nanomolar concentrations of scopolamine, wortmannin, MHY1485, lead, and cadmium in the media strongly increased Aβ plaque- and tau NFT-like immunoreactivity in ventral areas compared to the slices with non-supplemented media. The results highlight that we could harness the potential of the collagen hydrogel-based spreading of human Aβ42 and P301S aggregated tau, along with pharmacological manipulation, to produce pathologies relevant to AD. The results offer a novel ex vivo organotypic slice model to investigate AD pathologies with potential applications for screening drugs or therapies in the future.
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Affiliation(s)
| | - Christian Humpel
- Laboratory of Psychiatry and Experimental Alzheimer’s Research, Medical University of Innsbruck, 6020 Innsbruck, Austria;
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18
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Ferdous R, Islam MB, Al-Amin MY, Dey AK, Mondal MOA, Islam MN, Alam AK, Rahman AA, Sadik MG. Anticholinesterase and antioxidant activity of Drynaria quercifolia and its ameliorative effect in scopolamine-induced memory impairment in mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117095. [PMID: 37634747 DOI: 10.1016/j.jep.2023.117095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 08/29/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Drynaria quercifolia is an epiphytic fern distributed all over Bangladesh with traditional use in treating neurological disorders and other ailments. Although several pharmacological activities of D. quercifolia have been investigated, the neuroprotective potential of this plant is still unexplored. AIM OF STUDY In this study, we evaluated the in vitro anticholinesterase and antioxidant activities of D. quercifolia and the neuroprotective effect in scopolamine-induced memory-impaired mouse model. MATERIALS AND METHODS The crude methanol extract (DCM) of the plant was fractionated to prepare n-hexane (DHF), chloroform (DCF), ethyl acetate (DEF), and aqueous (DAF) factions. All the fractions were evaluated for anticholinesterase activity by modified Ellman's method and the antioxidant activity by several in vitro assays such as DPPH and hydroxyl free radicals scavenging, reducing power, and inhibition of brain lipid peroxidation. The effect of the most active fractions (both DCF and DEF) on learning and memory was assessed in scopolamine-induced mouse model of memory-impairment by Morris water maze tasks. Biochemical assays were performed in brain tissue. The active compound was isolated and characterized by chromatographic, spectroscopic, and molecular docking methods. RESULTS Phytochemical analysis demonstrated a high content of phenolic and flavonoid in DEF. In vitro studies revealed a strong antioxidant power of DEF and anticholinesterase activity of DCF. Both the DCF and DEF significantly (P˂0.05) reduced the escape latency time in the Morris's water maze tasks, and increased the time spent in the northeast quadrant in the probe trial. Biochemical data demonstrated that treatment with DCF and DEF at different doses significantly (P˂0.0001) inhibited acetylcholinesterase activity, restored GSH levels, and reduced MDA levels in the brain of scopolamine-induced memory-impaired mice, indicating the protective effect of D. quercifolia, possibly by acetylcholinesterase inhibition and oxidative stress prevention. Chromatographic methods of separation led to he isolation of catechin and protocatechuric acid from DEF and 3,4-dihydroxy benzoic acid from DCF. The structure of the compounds was determined by studies of their 1H-NMR spectra. Molecular docking as well as in vitro study suggests the anticholinesterase and antioxidant activity of the isolated compounds. CONCLUSION Our study suggested that the extracts of D. quercifolia, due to anticholinesterase and antioxidant activity, ameliorate the scopolamine-induced memory impairment in mice and thus may represent therapeutics in the treatment of Alzheimer's disease.
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Affiliation(s)
- Rafia Ferdous
- Department of Pharmacy, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | - Md Badrul Islam
- Bangladesh Council of Scientific and Industrial Research, Rajshahi Laboratories, Bangladesh, Rajshahi, 6206, Bangladesh.
| | - Md Yusuf Al-Amin
- Department of Pharmacy, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | - Anik Kumar Dey
- Department of Pharmacy, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | | | - Md Nurul Islam
- Department of Zoology, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | - Ahm Khurshid Alam
- Department of Pharmacy, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | - Aziz Abdur Rahman
- Department of Pharmacy, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| | - Md Golam Sadik
- Department of Pharmacy, University of Rajshahi, Rajshahi, 6205, Bangladesh.
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19
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Kushwaha A, Thakur MK. Suv39h1 Silencing Recovers Memory Decline in Scopolamine-Induced Amnesic Mouse Model. Mol Neurobiol 2024; 61:487-497. [PMID: 37626270 DOI: 10.1007/s12035-023-03570-x] [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: 03/12/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
Histone post-translational modifications play an important role in the regulation of long-term memory and modulation of expression of neuronal immediate early genes (IEGs). The lysine methyltransferase KMT1A/ Suv39h1 (a mammalian ortholog of the Drosophila melanogaster SU (VAR) 3-9) aids in the methylation of histone H3 at lysine 9. We previously reported that age-related memory decline is associated with an increase in Suv39h1 expression in the hippocampus of male mice. The scopolamine-induced amnesic mouse model is a well-known animal model of memory impairment. In the current study, we have made an attempt to find a link between the changes in the H3K9 trimethylation pattern and memory decline during scopolamine-induced amnesia. It was followed by checking the effect of siRNA-mediated silencing of hippocampal Suv39h1 on memory and expression of neuronal IEGs. Scopolamine treatment significantly increased global levels of H3K9me3 and Suv39h1 in the amnesic hippocampus. Suv39h1 silencing in amnesic mice reduced H3K9me3 levels at the neuronal IEGs (Arc and BDNF) promoter, increased the expression of Arc and BDNF in the hippocampus, and improved recognition memory. Thus, these findings suggest that the silencing of Suv39h1 alone or in combination with other epigenetic drugs might be effective for treating memory decline during amnesia.
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Affiliation(s)
- Akanksha Kushwaha
- Biochemistry and Molecular Biology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India
- K N Govt. P G College, Gyanpur, Sant Ravidas Nagar, 221304, India
| | - Mahendra Kumar Thakur
- Biochemistry and Molecular Biology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221 005, India.
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20
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Ushimaru R. Three-membered ring formation catalyzed by α-ketoglutarate-dependent nonheme iron enzymes. J Nat Med 2024; 78:21-32. [PMID: 37980694 PMCID: PMC10764440 DOI: 10.1007/s11418-023-01760-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 10/25/2023] [Indexed: 11/21/2023]
Abstract
Epoxides, aziridines, and cyclopropanes are found in various medicinal natural products, including polyketides, terpenes, peptides, and alkaloids. Many classes of biosynthetic enzymes are involved in constructing these ring structures during their biosynthesis. This review summarizes our current knowledge regarding how α-ketoglutarate-dependent nonheme iron enzymes catalyze the formation of epoxides, aziridines, and cyclopropanes in nature, with a focus on enzyme mechanisms.
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Affiliation(s)
- Richiro Ushimaru
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan.
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, 113-8657, Japan.
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21
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Lazarova MI, Tsvetanova ER, Georgieva AP, Stefanova MO, Uzunova DN, Denev PN, Tasheva KN. Marrubium vulgare Extract Improves Spatial Working Memory and Oxidative Stress Damage in Scopolamine-Treated Rats. J Alzheimers Dis 2024; 99:S157-S169. [PMID: 38489175 DOI: 10.3233/jad-231011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Background The cholinergic neuronal loss in the basal forebrain and increasing brain oxidative stress are one of the main features of the brain suffering from Alzheimer's disease. Marrubium vulgare (M. vulgare), commonly known as 'white horehound,' possesses a variety of valuable properties, such as antioxidative, anti-inflammatory, and antidiabetic activities. Moreover, it possesses neuromodulatory properties that could potentially impact short-term memory functions. Objective The present study was undertaken to investigate the preventive effects of water M. vulgare extract on working memory, cholinergic neurotransmission, and oxidative stress in rats with scopolamine (Sco)-induced dementia. Methods Male Wistar rats (200-250 g) were divided into four experimental groups. The plant extract was administered orally for 21 days, and Sco (2 mg/kg) was administered intraperitoneally for 11 consecutive days. The behavioral performance of the animals was evaluated by the T-maze test. The effect of the extract on acetylcholinesterase (AChE) activity and antioxidant status in cortex and hippocampus were also monitored. Results Our experimental data revealed that treatment with M. vulgare significantly increased the percentage of correct choices of rats with Sco-induced dementia in the T maze test (by 38%, p < 0.05). Additionally, it reduced AChE activity in the hippocampus (by 20%, p < 0.05) and alleviated oxidative stress induced by Sco, particularly in the cortex. Conclusions M. vulgare water extract demonstrated working memory preserving effect in rats with Sco-induced dementia, AChE inhibitory activity and in vivo antioxidant potential, and deserve further attention.
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Affiliation(s)
- Maria I Lazarova
- Institute of Neurobiology, Bulgarian Academy of Science, Sofia, Bulgaria
| | - Elina R Tsvetanova
- Institute of Neurobiology, Bulgarian Academy of Science, Sofia, Bulgaria
| | - Almira P Georgieva
- Institute of Neurobiology, Bulgarian Academy of Science, Sofia, Bulgaria
| | | | - Diamara N Uzunova
- Institute of Neurobiology, Bulgarian Academy of Science, Sofia, Bulgaria
| | - Petko N Denev
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Laboratory of Biologically Active Substances, Plovdiv, Bulgaria
| | - Krasimira N Tasheva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
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22
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Zaręba P, Łątka K, Mazur G, Gryzło B, Pasieka A, Godyń J, Panek D, Skrzypczak-Wiercioch A, Höfner GC, Latacz G, Maj M, Espargaró A, Sabaté R, Jóźwiak K, Wanner KT, Sałat K, Malawska B, Kulig K, Bajda M. Discovery of novel multifunctional ligands targeting GABA transporters, butyrylcholinesterase, β-secretase, and amyloid β aggregation as potential treatment of Alzheimer's disease. Eur J Med Chem 2023; 261:115832. [PMID: 37837674 DOI: 10.1016/j.ejmech.2023.115832] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/12/2023] [Accepted: 09/23/2023] [Indexed: 10/16/2023]
Abstract
Alzheimer's disease (AD) is a global health problem in the medical sector that will increase over time. The limited treatment of AD leads to the search for a new clinical candidate. Considering the multifactorial nature of AD, a strategy targeting number of regulatory proteins involved in the development of the disease is an effective approach. Here, we present a discovery of new multi-target-directed ligands (MTDLs), purposely designed as GABA transporter (GAT) inhibitors, that successfully provide the inhibitory activity against butyrylcholinesterase (BuChE), β-secretase (BACE1), amyloid β aggregation and calcium channel blockade activity. The selected GAT inhibitors, 19c and 22a - N-benzylamide derivatives of 4-aminobutyric acid, displayed the most prominent multifunctional profile. Compound 19c (mGAT1 IC50 = 10 μM, mGAT4 IC50 = 12 μM and BuChE IC50 = 559 nM) possessed the highest hBACE1 and Aβ40 aggregation inhibitory activity (IC50 = 1.57 μM and 99 % at 10 μM, respectively). Additionally, it showed a decrease in both the elongation and nucleation constants of the amyloid aggregation process. In contrast compound 22a represented the highest activity and a mixed-type of eqBuChE inhibition (IC50 = 173 nM) with hBACE1 (IC50 = 9.42 μM), Aβ aggregation (79 % at 10 μM) and mGATs (mGAT1 IC50 = 30 μM, mGAT4 IC50 = 25 μM) inhibitory activity. Performed molecular docking studies described the mode of interactions with GATs and enzymatic targets. In ADMET in vitro studies both compounds showed acceptable metabolic stability and low neurotoxicity. Successfully, compounds 19c and 22a at the dose of 30 mg/kg possessed statistically significant antiamnesic properties in a mouse model of amnesia caused by scopolamine and assessed in the novel object recognition (NOR) task or the passive avoidance (PA) task.
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Affiliation(s)
- Paula Zaręba
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Kamil Łątka
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Gabriela Mazur
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Beata Gryzło
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Anna Pasieka
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Justyna Godyń
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Dawid Panek
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Anna Skrzypczak-Wiercioch
- Department of Animal Anatomy and Preclinical Sciences, University Centre of Veterinary Medicine JU-UA, University of Agriculture in Kraków, Mickiewicz 24/28 St., 30-059, Kraków, Poland
| | - Georg C Höfner
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians-Universität München Butenandtstr., 5-13, 81377, Munich, Germany
| | - Gniewomir Latacz
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Maciej Maj
- Department of Biopharmacy, Medical University of Lublin, W. Chodzki 4a St., 20-093, Lublin, Poland
| | - Alba Espargaró
- Department of Pharmacy and Pharmaceutical Technology and Physical-Chemistry, School of Pharmacy and Food Sciences, University of Barcelona, Av Joan XXIII 27-31, 08028, Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), Av Joan XXIII, S/N, 08028, Barcelona, Spain
| | - Raimon Sabaté
- Department of Pharmacy and Pharmaceutical Technology and Physical-Chemistry, School of Pharmacy and Food Sciences, University of Barcelona, Av Joan XXIII 27-31, 08028, Barcelona, Spain; Institute of Nanoscience and Nanotechnology (IN2UB), Av Joan XXIII, S/N, 08028, Barcelona, Spain
| | - Krzysztof Jóźwiak
- Department of Biopharmacy, Medical University of Lublin, W. Chodzki 4a St., 20-093, Lublin, Poland
| | - Klaus T Wanner
- Department of Pharmacy, Center for Drug Research, Ludwig-Maximilians-Universität München Butenandtstr., 5-13, 81377, Munich, Germany
| | - Kinga Sałat
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Barbara Malawska
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Katarzyna Kulig
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland
| | - Marek Bajda
- Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9 St., 30-688, Kraków, Poland.
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El-Hussieny M, Abd-El-Maksoud MA, Soliman FM, Fouad MA, El-Ashrey MK. Dual-target ligand discovery for Alzheimer's disease: triphenylphosphoranylidene derivatives as inhibitors of acetylcholinesterase and β-amyloid aggregation. J Enzyme Inhib Med Chem 2023; 38:2166040. [PMID: 36695002 PMCID: PMC9879200 DOI: 10.1080/14756366.2023.2166040] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Alzheimer disease (AD) is one of the major neurodegenerative diseases that could not be prevented or completely cured and may lead to death. Here, we target AChE and β-amyloid proteins. Synthesising new triphenylphosphporanylidene derivatives based on the surveyed literature and testing their biological activity revealed promising results especially for the acetyl triphenylphosphoranylidene derivative 8c, which showed good inhibitor activity against AChE enzyme with IC50 in the nanomolar range (97.04 nM); on the other hand, it showed poor selectivity for AChE versus butyrylcholinesterase but with some futural structural modification, this selectivity can be improved. 8c showed MMP-2 IC50 of 724.19 nM and Aβ1-42 aggregation IC50 of 302.36 nM. A kinetic study demonstrated that compound 8c uncompetitively inhibited AChE. Moreover, derivative 8c showed low cytotoxicity, good in vivo behavioural studies including Y-maze and passive avoidance tests with activity similar to that of donepezil. Finally, in silico studies for 8c predict its good penetration into BBB and good binding affinity in the AChE binding site.
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Affiliation(s)
- Marwa El-Hussieny
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Giza, Egypt,Marwa El-Hussieny , Organometallic and Organometalloid Chemistry Department, National Research Centre, 33 ElBohouth St., (Former El Tahrir), Dokki, P.O. 12622, Giza, Egypt
| | | | - Fouad M. Soliman
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Giza, Egypt
| | - Marwa A. Fouad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt,Pharmaceutical Chemistry Department, School of Pharmacy, NewGiza University, Cairo, Egypt
| | - Mohamed K. El-Ashrey
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt,CONTACT Mohamed K. El-Ashrey Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, P.O. 11562, Giza, Egypt
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24
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Ma J, Yuan T, Gao Y, Zeng X, Liu Z, Gao J. Torreya grandis oil attenuates cognitive impairment in scopolamine-induced mice. Food Funct 2023; 14:10520-10534. [PMID: 37946597 DOI: 10.1039/d3fo03800a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
The oil of Torreya grandis (TGO), a common nut in China, is considered to be a bioactive edible oil and has a great value in functional food development. In this study, the neuroprotective effects of TGO were investigated on a scopolamine (SCOP)-induced C57BL/6J mouse model. The mice were pretreated with TGO for 30 days (1000 mg per kg per day and 3000 mg per kg per day, i.g.). Behavioral tests showed that the supplementation of TGO could prevent the cognitive deficits induced by SCOP. TGO rebalanced the disorder of the cholinergic system by upgrading the level of acetylcholine. TGO also alleviated the over-activation of microglia and inhibited neuroinflammation and oxidative stress. Additionally, TGO could regulate the composition of gut microbiota, increase the production of short-chain fatty acids, and decrease the content of lipopolysaccharides in the serum. In conclusion, TGO has the potential to prevent loss of memory and impairment of cognition, which may be related to its regulation of the gut microbiota-metabolite-brain axis.
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Affiliation(s)
- Jiachen Ma
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Tian Yuan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yuqi Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaoming Zeng
- Anhui Kangxinxiang Agricultural Technology Co., Ltd, Yuexi 246600, Anhui, China
| | - Zhigang Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jinming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China
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25
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Gutti G, Leifeld J, Kakarla R, Bajad NG, Ganeshpurkar A, Kumar A, Krishnamurthy S, Klein-Schmidt C, Tapken D, Hollmann M, Singh SK. Discovery of triazole-bridged aryl adamantane analogs as an intriguing class of multifunctional agents for treatment of Alzheimer's disease. Eur J Med Chem 2023; 259:115670. [PMID: 37515920 DOI: 10.1016/j.ejmech.2023.115670] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/10/2023] [Accepted: 07/19/2023] [Indexed: 07/31/2023]
Abstract
Alzheimer's disease (AD) is a progressive brain disorder associated with slow loss of brain functions leading to memory failure and modest changes in behavior. The multifactorial neuropathological condition is due to a depletion of cholinergic neurons and accumulation of amyloid-beta (Aβ) plaques. Recently, a multi-target-directed ligand (MTDL) strategy has emerged as a robust drug discovery tool to overcome current challenges. In this research work, we aimed to design and develop a library of triazole-bridged aryl adamantane analogs for the treatment of AD. All synthesized analogs were characterized and evaluated through various in vitro and in vivo biological studies. The optimal compounds 32 and 33 exhibited potent inhibitory activities against acetylcholinesterase (AChE) (32 - IC50 = 0.086 μM; 33 - 0.135 μM), and significant Aβ aggregation inhibition (20 μM). N-methyl-d-aspartate (NMDA) receptor (GluN1-1b/GluN2B subunit combination) antagonistic activity of compounds 32 and 33 measured upon heterologous expression in Xenopus laevis oocytes showed IC50 values of 3.00 μM and 2.86 μM, respectively. The compounds possessed good blood-brain barrier permeability in the PAMPA assay and were safe for SH-SY5Y neuroblastoma (10 μM) and HEK-293 cell lines (30 μM). Furthermore, in vivo behavioral studies in rats demonstrated that both compounds improved cognitive and spatial memory impairment at a dose of 10 mg/kg oral administration. Together, our findings suggest triazole-bridged aryl adamantane as a promising new scaffold for the development of anti-Alzheimer's drugs.
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Affiliation(s)
- Gopichand Gutti
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India; Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Jennifer Leifeld
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Ramakrishna Kakarla
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Nilesh Gajanan Bajad
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ankit Ganeshpurkar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ashok Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Sairam Krishnamurthy
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Christina Klein-Schmidt
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Daniel Tapken
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Michael Hollmann
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Sushil Kumar Singh
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
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Wang G, Du J, Ma J, Liu P, Xing S, Xia J, Dong S, Li Z. Discovery of Novel Tryptanthrin Derivatives with Benzenesulfonamide Substituents as Multi-Target-Directed Ligands for the Treatment of Alzheimer's Disease. Pharmaceuticals (Basel) 2023; 16:1468. [PMID: 37895939 PMCID: PMC10610214 DOI: 10.3390/ph16101468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Based on the multi-target-directed ligands (MTDLs) approach, two series of tryptanthrin derivatives with benzenesulfonamide substituents were evaluated as multifunctional agents for the treatment of Alzheimer's disease (AD). In vitro biological assays indicated most of the derivatives had good cholinesterase inhibitory activity and neuroprotective properties. Among them, the target compound 4h was considered as a mixed reversible dual inhibitor of acetylcholinesterase (AChE, IC50 = 0.13 ± 0.04 μM) and butyrylcholinesterase (BuChE, IC50 = 6.11 ± 0.15 μM). And it could also potentially prevent the generation of amyloid plaques by inhibiting self-induced Aβ aggregation (63.16 ± 2.33%). Molecular docking studies were used to explore the interactions of AChE, BuChE, and Aβ. Furthermore, possessing significant anti-neuroinflammatory potency (NO, IL-1β, TNF-α; IC50 = 0.62 ± 0.07 μM, 1.78 ± 0.21 μM, 1.31 ± 0.28 μM, respectively) reduced ROS production, and chelated biometals were also found in compound 4h. Further studies showed that 4h had proper blood-brain barrier (BBB) permeability and suitable in vitro metabolic stability. In in vivo study, 4h effectively ameliorated the learning and memory impairment of the scopolamine-induced AD mice model. These findings suggested that 4h may be a promising compound for further development as a multifunctional agent for the treatment of AD.
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Affiliation(s)
- Guoxing Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
- Anhui BioX-Vision Biological Technology Co., Ltd., Hefei 230032, China
| | - Jiyu Du
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
| | - Jie Ma
- Neurosurgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Peipei Liu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
- Anhui BioX-Vision Biological Technology Co., Ltd., Hefei 230032, China
| | - Siqi Xing
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
| | - Jucheng Xia
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
| | - Shuanghong Dong
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
| | - Zeng Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (J.D.); (P.L.); (S.X.); (J.X.); (S.D.)
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Sandeep Ganesh G, Konduri P, Kolusu AS, Namburi SV, Chunduru BTC, Nemmani KVS, Samudrala PK. Neuroprotective Effect of Saroglitazar on Scopolamine-Induced Alzheimer's in Rats: Insights into the Underlying Mechanisms. ACS Chem Neurosci 2023; 14:3444-3459. [PMID: 37669120 DOI: 10.1021/acschemneuro.3c00320] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023] Open
Abstract
Alzheimer's disease (AD) is one of the most prevalent and progressive neurodegenerative disorders, hallmarked by increased amyloid-β deposition and enhanced oxidative load in the brain, ensuing cognitive decline. The present study is aimed at elucidating the neuroprotective effect of saroglitazar, a dual peroxisome-proliferator-activated receptor (PPARα/γ) agonist used in the treatment of diabetic dyslipidemia, against memory impairment induced by intraperitoneal scopolamine injection. 30 male Wistar rats were randomly divided into the following five groups: (A) Veh + Veh, (B) SGZ + Veh, (C) Veh + SCOP, (D) DPZ + SCOP, and (E) SGZ + SCOP. Rats of the respective groups were pretreated with saroglitazar (10 mg/kg, p.o.) and donepezil (3 mg/kg, p.o.) once daily for 16 days. During the final 9 days of the study, a daily injection of scopolamine (3 mg/kg, i.p.) was administered to the respective groups. Adjacent to the scopolamine injection, behavioral tests such as the open field, Y maze, novel object recognition test, and Morris water maze were conducted to assess learning and memory. Additionally, biochemical parameters such as acetylcholinesterase (AChE), butyrylcholinesterase (BuChE), nitric oxide (NO), malondialdehyde (MDA), reduced glutathione (GSH), superoxide dismutase (SOD), brain-derived neurotrophic factor (BDNF), β-amyloid levels, and NF-κB were measured in the hippocampus. The rats that received scopolamine injections showed significantly impaired short-term spatial and learning memory. This was associated with an increase in β-amyloid, iNOS, nitric oxide (NO), malondialdehyde, NF-κB, and TNF-α levels in the hippocampus of AD rats. On the other hand, saroglitazar has provided promising data on its protective role in cognition by protecting the BDNF, SOD, and GSH decline. As a result, saroglitazar was found to be a promising therapy in AD by upregulating the antioxidant status and cholinergic activity and preventing memory loss. Collectively, findings in the present study revealed that saroglitazar protected AD by suppressing scopolamine-mediated learning and memory deficits, oxidative stress, and cholinergic damage. Studying these mechanisms may conclude the protective role of saroglitazar against AD. However, further studies in transgenic animals will provide numerous insights into treatment mechanisms and contribute to developing a therapeutic intervention for AD.
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Affiliation(s)
- Grandhi Sandeep Ganesh
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534202, India
| | - Prasad Konduri
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534202, India
| | - Aravinda Sai Kolusu
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534202, India
| | - Srihari Vandana Namburi
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534202, India
| | - Bala Tejo Chandra Chunduru
- Clinical Data Manager, STATMINDS LLC, 501 Allendale Rd Suite 202, King of Prussia, Pennsylvania 19406, United States
| | - Kumar V S Nemmani
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534202, India
| | - Pavan Kumar Samudrala
- Department of Pharmacology, Shri Vishnu College of Pharmacy, Bhimavaram, Andhra Pradesh 534202, India
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Balakrishnan R, Kim YS, Kim GW, Kim WJ, Hong SM, Kim CG, Choi DK. Standardized extract of Glehnia Littoralis abrogates memory impairment and neuroinflammation by regulation of CREB/BDNF and NF-κB/MAPK signaling in scopolamine-induced amnesic mice model. Biomed Pharmacother 2023; 165:115106. [PMID: 37421783 DOI: 10.1016/j.biopha.2023.115106] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/26/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023] Open
Abstract
Mild cognitive impairment is a typical symptom of early Alzheimer's disease (AD). Glehnia littoralis (G. littoralis), a medicinal halophyte plant commonly used to treat strokes, has been shown to possess some therapeutic qualities. In this study, we investigated the neuroprotective and anti-neuroinflammatory effects of a 50% ethanol extract of G. littoralis (GLE) on lipopolysccharide (LPS)-stimulated BV-2 cells and scopolamine-induced amnesic mice. In the in vitro study, GLE treatment (100, 200, and 400 µg/mL) markedly attenuated the translocation of NF-κB to the nucleus concomitantly with the significant mitigation of the LPS-induced production of inflammatory mediators, including NO, iNOS, COX-2, IL-6, and TNF-α. In addition, the GLE treatment suppressed the phosphorylation of MAPK signaling in the LPS-stimulated BV-2 cells. In the in vivo study, mice were orally administered with the GLE (50, 100, and 200 mg/kg) for 14 days, and cognitive loss was induced via the intraperitoneal injection of scopolamine (1 mg/kg) from 8 to 14 days. We found that GLE treatment ameliorated memory impairment and simultaneously improved memory function in the scopolamine-induced amnesic mice. Correspondingly, GLE treatment significantly decreased the AChE level and upregulated the protein expression of neuroprotective markers, such as BDNF and CREB, as well as Nrf2/HO-1 and decreased the levels of iNOS and COX-2 in the hippocampus and cortex. Furthermore, GLE treatment attenuated the increased phosphorylation of NF-κB/MAPK signaling in the hippocampus and cortex. These results suggest that GLE has a potential neuroprotective activity that may ameliorate learning and memory impairment by regulating AChE activity, promoting CREB/BDNF signaling, and inhibiting NF-κB/MAPK signaling and neuroinflammation.
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Affiliation(s)
- Rengasamy Balakrishnan
- BK21 FOUR GLOCAL Education Program of Nutraceuticals Development, Konkuk University, Chungju 27478, Republic of Korea; Department of Biotechnology, College of Biomedical and Health Science, Research Institute of Inflammatory Disease (RID), Konkuk University, Chungju 27478, Republic of Korea
| | - Yon-Suk Kim
- Department of Biotechnology, College of Biomedical and Health Science, Research Institute of Inflammatory Disease (RID), Konkuk University, Chungju 27478, Republic of Korea
| | - Ga-Won Kim
- Department of Applied Life Sciences, Graduate School, Konkuk University, Chungju 27478, Republic of Korea
| | - Woo-Jung Kim
- Biocenter, Gyeonggido Business and Science Accelerator, Gwanggyo-ro 147, Yeongtong-gu, Suwon 16229, Republic of Korea
| | - Sun-Mee Hong
- Department of Technology Development, Marine Industry Research Institute for East Sea Rim, Uljin-gun, Gyeongsangbuk-do 36315, Republic of Korea
| | - Choong-Gon Kim
- Marine Ecosystem Research Center, Korea Institute of Ocean Science and Technology, 385 Haeyang-ro, Yeongdo-gu, Busan 49111, Republic of Korea
| | - Dong-Kug Choi
- BK21 FOUR GLOCAL Education Program of Nutraceuticals Development, Konkuk University, Chungju 27478, Republic of Korea; Department of Biotechnology, College of Biomedical and Health Science, Research Institute of Inflammatory Disease (RID), Konkuk University, Chungju 27478, Republic of Korea; Department of Applied Life Sciences, Graduate School, Konkuk University, Chungju 27478, Republic of Korea.
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Kose S, Kutlu MD, Kara S, Polat S, Akillioglu K. Investigation of the protective effect of long-term exercise on molecular pathways and behaviours in scopolamine induced alzheimer's disease-like condition. Brain Res 2023; 1814:148429. [PMID: 37269967 DOI: 10.1016/j.brainres.2023.148429] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/17/2023] [Accepted: 05/27/2023] [Indexed: 06/05/2023]
Abstract
Despite research, the role of exercise in treatment and prevention of neurodegenerative diseases remains unclear. Our study, investigated that protective effect of treadmill exercise on molecular pathways and cognitive behaviours in a scopolamine-induced model of Alzheimer's disease. For that purpose, male Balb/c mice subjected to exercise for 12 weeks. During the last 4 weeks of exercise, mice were given an injection of scopolamine (2 mg/kg). Following injection, open field test and Morris water maze test were used to assess emotional-cognitive behaviour. Hippocampus and prefrontal cortex of mice were isolated, and levels of BDNF, TrkB, and p-GSK3ßSer389 were assessed by western blotting, and levels of APP and Aß-40 were analysed by immunohistochemistry. In our study, scopolamine administration increased anxiety-like behaviour in open field test, while negatively affecting spatial learning and memory in Morris water maze test. We found that exercise had a protective effect against cognitive and emotional decline. Scopolamine decreased levels of p-GSK3ßSer389, BDNF in hippocampus and prefrontal cortex.Whereas TrkB decreased in hippocampus and increased in prefrontal cortex. There was an increase in p-GSK3ßSer389, BDNF, TrkB in the hippocampus, and p-GSK3ßSer389, BDNF in the prefrontal cortex in the exercise + scopolamine group. Immunohistochemical analysis showed that scopolamine administration increased APP and Aß-40 in hippocampus and prefrontal cortex in neuronal and perineuronal areas whereas Aß-40 and APP were reduced in exercise + scopolamine groups. In conclusion, long-term exercise may have a protective effect against scopolamine-induced impairments in cognitive-emotional behaviour. It can be suggested that this protective effect is mediated by increased BDNF levels and GSK3ßSer389 phosphorylation.
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Affiliation(s)
- Seda Kose
- Cukurova University Medical Faculty, Department of Physiology, Division of Neurophysiology, Adana 01330, Turkey.
| | - Meltem Donmez Kutlu
- Cukurova University Medical Faculty, Department of Physiology, Division of Neurophysiology, Adana 01330, Turkey
| | - Samet Kara
- Cukurova University Medical Faculty, Department of Histology and Embryology, Adana 01330, Turkey
| | - Sait Polat
- Cukurova University Medical Faculty, Department of Histology and Embryology, Adana 01330, Turkey
| | - Kubra Akillioglu
- Cukurova University Medical Faculty, Department of Physiology, Division of Neurophysiology, Adana 01330, Turkey
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Bhanukiran K, Singh SK, Singh R, Kumar A, Hemalatha S. Discovery of Multitarget-Directed Ligands from Piperidine Alkaloid Piperine as a Cap Group for the Management of Alzheimer's Disease. ACS Chem Neurosci 2023; 14:2743-2760. [PMID: 37433759 DOI: 10.1021/acschemneuro.3c00269] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023] Open
Abstract
The naturally inspired multitarget-directed ligands (PC01-PC10 and PD01-PD26) were synthesized from piperine for the management of Alzheimer's disease (AD). The compound PD07 showed significant inhibitory activity on ChEs, BACE1, and Aβ1-42 aggregation in in vitro studies. Further, compound PD07 effectively displaced the propidium iodide at the AChE PAS site. The compound PD07 exhibited significant lipophilicity in PAMPA studies. Additionally, PD07 demonstrated neuroprotective properties in the Aβ1-42 induced SH-SY5Y cell line. Furthermore, DFT calculations were performed using B3LYP/6-311G(d,p) basis sets to explore the PD07 physical and chemical properties. The compound PD07 showed a similar binding interaction profile at active sites of AChE, BuChE, and BACE1 proteins as compared to reference ligands (donepezil, tacrine, and BSD) in molecular docking and dynamic simulation studies. In acute oral toxicity studies, compound PD07 exhibited no toxicity symptoms up to 300 mg/kg, po. The compound PD07 (10 mg/kg, po) improved memory and cognition in scopolamine-induced amnesia rats. Further, PD07 increased ACh levels in the brain by inhibiting the AChE activity. The results from in vitro, in silico, and in vivo studies suggested that compound PD07 is a potent multitarget-directed lead from piperine to overcome Alzheimer's disease.
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Affiliation(s)
- Kancharla Bhanukiran
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Sushil Kumar Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Ravi Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Ashok Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Siva Hemalatha
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
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Kim JH, Han YE, Oh SJ, Lee B, Kwon O, Choi CW, Kim MS. Enhanced neuronal activity by suffruticosol A extracted from Paeonia lactiflora via partly BDNF signaling in scopolamine-induced memory-impaired mice. Sci Rep 2023; 13:11731. [PMID: 37474737 PMCID: PMC10359324 DOI: 10.1038/s41598-023-38773-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023] Open
Abstract
Neurodegenerative diseases are explained by progressive defects of cognitive function and memory. These defects of cognition and memory dysfunction can be induced by the loss of brain-derived neurotrophic factors (BDNF) signaling. Paeonia lactiflora is a traditionally used medicinal herb in Asian countries and some beneficial effects have been reported, including anti-oxidative, anti-inflammatory, anti-cancer activity, and potential neuroprotective effects recently. In this study, we found that suffruticosol A is a major compound in seeds of Paeonia lactiflora. When treated in a SH-SY5 cell line for measuring cell viability and cell survival, suffruticosol A increased cell viability (at 20 µM) and recovered scopolamine-induced neurodegenerative characteristics in the cells. To further confirm its neural amelioration effects in the animals, suffruticosol A (4 or 15 ng, twice a week) was administered into the third ventricle beside the brain of C57BL/6 mice for one month then the scopolamine was intraperitoneally injected into these mice to induce impairments of cognition and memory before conducting behavioral experiments. Central administration of suffruticosol A into the brain restored the memory and cognition behaviors in mice that received the scopolamine. Consistently, the central treatments of suffruticosol A showed rescued cholinergic deficits and BDNF signaling in the hippocampus of mice. Finally, we measured the long-term potentiation (LTP) in the hippocampal CA3-CA1 synapse to figure out the restoration of the synaptic mechanism of learning and memory. Bath application of suffruticosol A (40 µM) improved LTP impairment induced by scopolamine in hippocampal slices. In conclusion, the central administration of suffruticosol A ameliorated neuronal effects partly through elevated BDNF signaling.
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Affiliation(s)
- June Hee Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Young-Eun Han
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Soo-Jin Oh
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Bonggi Lee
- Department of Food Science and Nutrition, Pukyong National University, Busan, 48513, Republic of Korea
| | - Obin Kwon
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Chun Whan Choi
- Natural Biomaterial Team, Biocenter, Gyeonggido Business and Science Accelerator, Suwon, 16229, Gyeonggi-do, Republic of Korea.
| | - Min Soo Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.
- Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea.
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Pant S, Gupta M, Anthwal T, Chauhan M, Nain S. Neuroprotective effects of novel pyrrolidine-2-one derivatives on scopolamine-induced cognitive impairment in mice: Behavioral and biochemical analysis. Pharmacol Biochem Behav 2023:173602. [PMID: 37453560 DOI: 10.1016/j.pbb.2023.173602] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/21/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Alzheimer's disease (AD) is a long-term neurodegenerative condition that impairs cognitive abilities. Brain acetylcholine deficit and oxidative stress may be considered the key pathogenic causes for AD, even though the basic etiology is still unknown. The effects of some novel pyrrolidine-2-one derivatives on the learning and memory deficits caused by scopolamine in mice were examined in the current study. The learning and memory parameters were assessed using the morris water maze test, rota rod test the and locomotor activity. A number of biochemical factors were also evaluated, including acetylcholinesterase (AChE), lipid peroxidation (LPO), reduced glutathione (GSH), superoxide dismutase (SOD), catalase (CA), and nitrite oxide (NO) assay. The current study shows that these derivatives were more effective and comparable to donepezil at treating the behavioral and biochemical changes brought on by scopolamine. The observed results showed pyrrolidine-2-one derivatives as a promising candidate for diseases associated with cognitive deficits.
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Affiliation(s)
- Swati Pant
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Mohan Gupta
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Tulika Anthwal
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Monika Chauhan
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Sumitra Nain
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, India.
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Abuelezz SA, Hendawy N. Spotlight on Coenzyme Q10 in scopolamine-induced Alzheimer's disease: oxidative stress/PI3K/AKT/GSK 3ß/CREB/BDNF/TrKB. J Pharm Pharmacol 2023:rgad048. [PMID: 37315215 DOI: 10.1093/jpp/rgad048] [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: 12/12/2022] [Accepted: 04/28/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVES Excess amyloid beta (Aβ) and oxidative stress (OS) are inextricable hallmarks of the neuronal damage associated Alzheimer's disease. Aβ-induced cognitive and memory dysfunctions are mediated through different signalling pathways as phosphatidylinositol-3-kinase (PI3K) and their downstream intermediates including protein-kinase-B, known as Akt, glycogen-synthase-kinase-3β (GSK-3β), cAMP-response-element-binding-protein (CREB), brain-derived-neurotrophic factor (BDNF) and tropomyosin-related-kinase receptor-B (TrKB). The current work aims to investigate the protective potentials of CoQ10 against scopolamine (Scop)-induced cognitive disability and the contribution of PI3K/Akt/GSK-3β/CREB/BDNF/TrKB in the neuroprotection effects. METHODS The chronic co-administration of CQ10 (50, 100 and 200 mg/kg/day i.p.) with Scop in Wistar rats for 6 weeks were assayed both behaviourally and biochemically. KEY FINDINGS CoQ10 ameliorated the Scop-induced cognitive and memory defects by restoring alterations in novel object recognition and Morris water maze behavioural tests. CoQ10 favourably changed the Scop-induced deleterious effects in hippocampal malondialdehyde, 8-hydroxy-2' deoxyguanosine, antioxidants and PI3K/Akt/GSK-3β/CREB/BDNF/TrKB levels. CONCLUSIONS These results exhibited the neuroprotective effects of CoQ10 on Scop-induced AD and revealed its ability to inhibit oxidative stress, amyloid deposition and to modulate PI3K/Akt/GSK-3β/CREB/BDNF/TrKB pathway.
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Affiliation(s)
- Sally A Abuelezz
- Clinical Pharmacology Department, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | - Nevien Hendawy
- Clinical Pharmacology Department, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
- Basic Medical Sciences Department, Faculty of Medicine, Faculty of Medicine, Galala University, Suez, Egypt
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Naseri A, Sadigh-Eteghad S, Seyedi-Sahebari S, Hosseini MS, Hajebrahimi S, Salehi-Pourmehr H. Cognitive effects of individual anticholinergic drugs: a systematic review and meta-analysis. Dement Neuropsychol 2023; 17:e20220053. [PMID: 37261256 PMCID: PMC10229087 DOI: 10.1590/1980-5764-dn-2022-0053] [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: 06/15/2022] [Revised: 11/11/2022] [Accepted: 11/26/2022] [Indexed: 06/02/2023] Open
Abstract
Anticholinergics (ACs) are among the most prescribed drugs. Investigating the impaired cognitive domains due to individual ACs usage is associated with controversial findings. Objective The objective of this study was to investigate the effects of individual ACs on different aspects of cognitive function based on clinical trial studies. Methods This systematic review was conducted following the PRISMA statement. A systematic search was performed in Embase, PubMed, Cochrane Library, Scopus, and Web of Science databases. Risk of bias (RoB) was assessed by the Joanna Briggs Institute checklists and the meta-analysis was performed using the CMA software. Results Out of 3,026 results of searching, 138 studies were included. A total of 38 studies that assess the cognitive impacts of scopolamine were included in the meta-analysis. Included studies reported cognitive effects of scopolamine, mecamylamine, atropine, biperiden, oxybutynin, trihexyphenidyl, benzhexol, and dicyclomine; however, glycopyrrolate, trospium, tolterodine, darifenacin, fesoterodine, tiotropium, and ipratropium were not associated with cognitive decline. Based on the meta-analyses, scopolamine was associated with reduced recognition (SDM -1.84; 95%CI -2.48 to -1.21; p<0.01), immediate recall (SDM -1.82; 95%CI -2.35 to -1.30; p<0.01), matching to sample (SDM -1.76; 95%CI -2.57 to -0.96; p<0.01), delayed recall (SDM -1.54; 95%CI -1.97 to -1.10; p<0.01), complex memory tasks (SDM -1.31; 95%CI -1.78 to -0.84; p<0.01), free recall (SDM -1.18; 95%CI -1.63 to -0.73; p<0.01), cognitive function (SDM -0.95; 95%CI -1.46 to -0.44; p<0.01), attention (SDM -0.85; 95%CI -1.38 to -0.33; p<0.01), and digit span (SDM -0.65; 95%CI -1.21 to -0.10; p=0.02). There was a high RoB in our included study, especially in terms of dealing with possible cofounders. Conclusion The limitations of this study suggest a need for more well-designed studies with a longer duration of follow-up on this topic to reach more reliable evidence.
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Affiliation(s)
- Amirreza Naseri
- Tabriz University of Medical Sciences, Student Research Committee, Tabriz, Iran
| | - Saeed Sadigh-Eteghad
- Tabriz University of Medical Sciences, Neurosciences Research Center, Tabriz, Iran
| | | | | | - Sakineh Hajebrahimi
- Tabriz University of Medical Sciences, Research Center for Evidence-Based Medicine, Iranian EBM Center: A Joanna Briggs Institute Center of Excellence, Tabriz, Iran
| | - Hanieh Salehi-Pourmehr
- Tabriz University of Medical Sciences, Research Center for Evidence-Based Medicine, Iranian EBM Center: A Joanna Briggs Institute Center of Excellence, Tabriz, Iran
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Waiker DK, Verma A, A GT, Singh N, Roy A, Dilnashin H, Tiwari V, Trigun SK, Singh SP, Krishnamurthy S, Lama P, Davisson VJ, Shrivastava SK. Design, Synthesis, and Biological Evaluation of Piperazine and N-Benzylpiperidine Hybrids of 5-Phenyl-1,3,4-oxadiazol-2-thiol as Potential Multitargeted Ligands for Alzheimer's Disease Therapy. ACS Chem Neurosci 2023. [PMID: 37216500 DOI: 10.1021/acschemneuro.3c00245] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023] Open
Abstract
Our present work demonstrates the successful design and synthesis of a new class of compounds based upon a multitargeted directed ligand design approach to discover new agents for use in Alzheimer's disease (AD). All the compounds were tested for their in vitro inhibitory potential against human acetylcholinesterase (hAChE), human butylcholinesterase (hBChE), β-secretase-1 (hBACE-1), and amyloid β (Aβ) aggregation. Compounds 5d and 5f have shown hAChE and hBACE-1 inhibition comparable to donepezil, while hBChE inhibition was comparable to rivastigmine. Compounds 5d and 5f also demonstrated a significant reduction in the formation of Aβ aggregates through the thioflavin T assay and confocal, atomic force, and scanning electron microscopy studies and significantly displaced the total propidium iodide, that is, 54 and 51% at 50 μM concentrations, respectively. Compounds 5d and 5f were devoid of neurotoxic liabilities against RA/BDNF (RA = retinoic acid; BDNF = brain-derived neurotrophic factor)-differentiated SH-SY5Y neuroblastoma cell lines at 10-80 μM concentrations. In both the scopolamine- and Aβ-induced mouse models for AD, compounds 5d and 5f demonstrated significant restoration of learning and memory behaviors. A series of ex vivo studies of hippocampal and cortex brain homogenates showed that 5d and 5f elicit decreases in AChE, malondialdehyde, and nitric oxide levels, an increase in glutathione level, and reduced levels of pro-inflammatory cytokines, tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) mRNA. The histopathological examination of mice revealed normal neuronal appearance in the hippocampal and cortex regions of the brain. Western blot analysis of the same tissue indicated a reduction in Aβ, amyloid precursor protein (APP)/Aβ, BACE-1, and tau protein levels, which were non-significant compared to the sham group. The immunohistochemical analysis also showed significantly lower expression of BACE-1 and Aβ levels, which was comparable to donepezil-treated group. Compounds 5d and 5f represent new lead candidates for developing AD therapeutics.
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Affiliation(s)
- Digambar Kumar Waiker
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Akash Verma
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Gajendra T A
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Namrata Singh
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anima Roy
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Hagera Dilnashin
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Vinod Tiwari
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Surendra Kumar Trigun
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Surya P Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sairam Krishnamurthy
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
| | - Prem Lama
- CSIR - Indian Institute of Petroleum, Tech. Block, Mohkampur, Dehradun 248005, Uttarakhand, India
| | - Vincent Jo Davisson
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 479047, United States
| | - Sushant Kumar Shrivastava
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology-Banaras Hindu University, Varanasi 221005, India
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Choi GY, Kim HB, Cho JM, Sreelatha I, Lee IS, Kweon HS, Sul S, Kim SA, Maeng S, Park JH. Umbelliferone Ameliorates Memory Impairment and Enhances Hippocampal Synaptic Plasticity in Scopolamine-Induced Rat Model. Nutrients 2023; 15:nu15102351. [PMID: 37242234 DOI: 10.3390/nu15102351] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/26/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder, characterized by memory loss and cognitive decline. Among the suggested pathogenic mechanisms of AD, the cholinergic hypothesis proposes that AD symptoms are a result of reduced synthesis of acetylcholine (ACh). A non-selective antagonist of the muscarinic ACh receptor, scopolamine (SCOP) induced cognitive impairment in rodents. Umbelliferone (UMB) is a Apiaceae-family-derived 7-hydeoxycoumarin known for its antioxidant, anti-tumor, anticancer, anti-inflammatory, antibacterial, antimicrobial, and antidiabetic properties. However, the effects of UMB on the electrophysiological and ultrastructure morphological aspects of learning and memory are still not well-established. Thus, we investigated the effect of UMB treatment on cognitive behaviors and used organotypic hippocampal slice cultures for long-term potentiation (LTP) and the hippocampal synaptic ultrastructure. A hippocampal tissue analysis revealed that UMB attenuated a SCOP-induced blockade of field excitatory post-synaptic potential (fEPSP) activity and ameliorated the impairment of LTP by the NMDA and AMPA receptor antagonists. UMB also enhanced the hippocampal synaptic vesicle density on the synaptic ultrastructure. Furthermore, behavioral tests on male SD rats (7-8 weeks old) using the Y-maze test, passive avoidance test (PA), and Morris water maze test (MWM) showed that UMB recovered learning and memory deficits by SCOP. These cognitive improvements were in association with the enhanced expression of BDNF, TrkB, and the pCREB/CREB ratio and the suppression of acetylcholinesterase activity. The current findings indicate that UMB may be an effective neuroprotective reagent applicable for improving learning and memory against AD.
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Affiliation(s)
- Ga-Young Choi
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Hyun-Bum Kim
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jae-Min Cho
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Inturu Sreelatha
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - In-Seo Lee
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Hee-Seok Kweon
- Center for Research Equipment, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Sehyun Sul
- Undergraduate Programs, Rutgers University, 100 Rockafeller Road, Suite 1008, Piscataway, NJ 08854, USA
| | - Sun Ae Kim
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Sungho Maeng
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Ji-Ho Park
- Department of Gerontology (AgeTech Service Convergence Major), Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Republic of Korea
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Kim MY, Kim S, Lee J, Kim JI, Oh E, Kim SW, Lee E, Cho KS, Kim CS, Lee MH. Lignan-Rich Sesame ( Sesamum indicum L.) Cultivar Exhibits In Vitro Anti-Cholinesterase Activity, Anti-Neurotoxicity in Amyloid-β Induced SH-SY5Y Cells, and Produces an In Vivo Nootropic Effect in Scopolamine-Induced Memory Impaired Mice. Antioxidants (Basel) 2023; 12:antiox12051110. [PMID: 37237976 DOI: 10.3390/antiox12051110] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/28/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Alzheimer's disease, a major cause of dementia, is characterized by impaired cholinergic function, increased oxidative stress, and amyloid cascade induction. Sesame lignans have attracted considerable attention owing to their beneficial effects on brain health. This study investigated the neuroprotective potential of lignan-rich sesame cultivars. Among the 10 sesame varieties studied, Milyang 74 (M74) extracts exhibited the highest total lignan content (17.71 mg/g) and in vitro acetylcholinesterase (AChE) inhibitory activity (66.17%, 0.4 mg/mL). M74 extracts were the most effective in improving cell viability and inhibiting reactive oxygen species (ROS) and malondialdehyde (MDA) generation in amyloid-β25-35 fragment-treated SH-SY5Y cells. Thus, M74 was used to evaluate the nootropic effects of sesame extracts and oil on scopolamine (2 mg/kg)-induced memory impairment in mice compared to the control cultivar (Goenback). Pretreatment with the M74 extract (250 and 500 mg/kg) and oil (1 and 2 mL/kg) effectively improved memory disorder in mice (demonstrated by the passive avoidance test), inhibited AChE, and enhanced acetylcholine (Ach) levels. Moreover, immunohistochemistry and Western blot results showed that the M74 extract and oil reversed the scopolamine-induced increase in APP, BACE-1, and presenilin expression levels in the amyloid cascade and decreased BDNF and NGF expression levels in neuronal regeneration.
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Affiliation(s)
- Min-Young Kim
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Sungup Kim
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Jeongeun Lee
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Jung-In Kim
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Eunyoung Oh
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Sang-Woo Kim
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Eunsoo Lee
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Kwang-Soo Cho
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Choon-Song Kim
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
| | - Myoung-Hee Lee
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Milyang 50424, Republic of Korea
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Choi J, Choi SY, Hong Y, Han YE, Oh SJ, Lee B, Choi CW, Kim MS. The central administration of vitisin a, extracted from Vitis vinifera, improves cognitive function and related signaling pathways in a scopolamine-induced dementia model. Biomed Pharmacother 2023; 163:114812. [PMID: 37148861 DOI: 10.1016/j.biopha.2023.114812] [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: 03/10/2023] [Revised: 04/27/2023] [Accepted: 04/30/2023] [Indexed: 05/08/2023] Open
Abstract
Neurodegenerative disorders, such as Alzheimer's disease (AD), are characterized by cognitive function loss and progressive memory impairment. Vitis vinifera, which is consumed in the form of fruits and wines in various countries, contains several dietary stilbenoids that have beneficial effects on neuronal disorders related to cognitive impairment. However, few studies have investigated the hypothalamic effects of vitisin A, a resveratrol tetramer derived from V. vinifera stembark, on cognitive functions and related signaling pathways. In this study, we conducted in vitro, ex vivo, and in vivo experiments with multiple biochemical and molecular analyses to investigate its pharmaceutical effects on cognitive functions. Treatment with vitisin A increased cell viability and cell survival under H2O2-exposed conditions in a neuronal SH-SY5 cell line. Ex vivo experiments showed that vitisin A treatment restored the scopolamine-induced disruption of long-term potentiation (LTP) in the hippocampal CA3-CA1 synapse, indicating the restoration of synaptic mechanisms of learning and memory. Consistently, central administration of vitisin A ameliorated scopolamine-induced disruptions of cognitive and memory functions in C57BL/6 mice, as evidenced by Y-maze and passive avoidance tests. Further studies showed that vitisin A upregulates BDNF-CREB signaling in the hippocampus. Together, our findings suggest that vitisin A exhibits neuroprotective effects, at least partially, by upregulating BDNF-CREB signaling and LTP.
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Affiliation(s)
- Jeongyoon Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Sung-Yun Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Yuni Hong
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Young-Eun Han
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Soo-Jin Oh
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Bonggi Lee
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Republic of Korea
| | - Chun Whan Choi
- Natural Product Research Team, Gyeonggi Biocenter, Gyeonggido Business and Science Accelerator, Suwon, Republic of Korea.
| | - Min Soo Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea.
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Leong ATL, Wong EC, Wang X, Wu EX. Hippocampus Modulates Vocalizations Responses at Early Auditory Centers. Neuroimage 2023; 270:119943. [PMID: 36828157 DOI: 10.1016/j.neuroimage.2023.119943] [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: 01/26/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
Despite its prominence in learning and memory, hippocampal influence in early auditory processing centers remains unknown. Here, we examined how hippocampal activity modulates sound-evoked responses in the auditory midbrain and thalamus using optogenetics and functional MRI (fMRI) in rodents. Ventral hippocampus (vHP) excitatory neuron stimulation at 5 Hz evoked robust hippocampal activity that propagates to the primary auditory cortex. We then tested 5 Hz vHP stimulation paired with either natural vocalizations or artificial/noise acoustic stimuli. vHP stimulation enhanced auditory responses to vocalizations (with a negative or positive valence) in the inferior colliculus, medial geniculate body, and auditory cortex, but not to their temporally reversed counterparts (artificial sounds) or broadband noise. Meanwhile, pharmacological vHP inactivation diminished response selectivity to vocalizations. These results directly reveal the large-scale hippocampal participation in natural sound processing at early centers of the ascending auditory pathway. They expand our present understanding of hippocampus in global auditory networks.
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Affiliation(s)
- Alex T L Leong
- Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
| | - Eddie C Wong
- Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Xunda Wang
- Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Ed X Wu
- Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
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Translationally controlled tumor protein restores impaired memory and altered synaptic protein expression in animal models of dementia. Biomed Pharmacother 2023; 160:114357. [PMID: 36738496 DOI: 10.1016/j.biopha.2023.114357] [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: 11/08/2022] [Revised: 01/25/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
This study describes the effects of translationally controlled tumor protein (TCTP) on mice with memory impairment caused by scopolamine (SCO) administration. Specifically, memory functions and expression levels of hippocampal synaptic proteins in 7- to 12-month-old SCO-treated wild-type (WT-SCO) mice were compared to those of TCTP-overexpressing (TG) and TCTP knocked-down (KD) mice similarly treated with SCO. Passive-avoidance tasks were performed with WT, TG, and KD mice for four weeks after intraperitoneal injection of SCO or saline followed by an acquisition test. After completing behavioral studies, hippocampi of all mice groups were collected and their synaptic protein contents were subjected to Western blotting or immunohistochemical analyses, and compared with those of 5x familial Alzheimer's disease (5xFAD) mice and postmortem AD patients. Results of passive avoidance tests revealed that SCO-induced memory impairment was repaired in TCTP-TG mice, but not in TCTP-KD mice. Hippocampal expression levels of synaptophysin, synapsin-1, and PSD-95 were increased in TCTP-TG mice treated with SCO (TG-SCO) but decreased in TCTP-KD mice treated with SCO (KD-SCO). Decreased levels of TCTP, synaptophysin, and PSD-95 were also found in hippocampi of 5xFAD mice and AD patients. Expression levels of p-CREB/CREB and brain-derived neurotrophic factor (BDNF) in TCTP-TG and TG-SCO mice were similar to or increased compared to those in WT mice, but decreased in TCTP-KD and KD-SCO mice. BDNF immunoreactivity was restored in CA1 regions of hippocampi of TG-SCO mice, but not in KD-SCO mice. These results suggest that TCTP can restore damaged memory in mice possibly through restored synaptic protein expression.
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Investigating the chemical profile of Rheum lhasaense and its main ingredient of piceatannol-3'-O-β-D-glucopyranoside on ameliorating cognitive impairment. Biomed Pharmacother 2023; 160:114394. [PMID: 36774724 DOI: 10.1016/j.biopha.2023.114394] [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: 11/28/2022] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
Rheum lhasaense A. J. Li et P. K. Hsiao, a stout herb plant from the Polygonaceae, is a typical Tibetan folk herb with heat-clearing and detoxifying effects, but does not have the typical laxative effect compared with other rhubarb plants. Nevertheless, its chemical composition and pharmacological activities still lack in-depth research. The present study endeavored to analyze the possible phytochemical constituents in R. lhasaense and explore the main compound piceatannol-3'-O-β-D-glucopyranoside (PG) effect on cognitive impairment and its underlying mechanism. The chemical profile of R. lhasaense discovered 46 compounds, including 27 stilbenoids and 13 gallotannins using UPLC-Q-TOF-MS/MS. The UPLC determined the contents of 6 main stilbenoids, among which the content of PG was the highest, up to 61.06 mg/g. Moreover, behavioral tests showed that PG (40 mg/kg and 160 mg/kg) administration markedly ameliorated memory impairments of scopolamine-induced mice. Biochemical parameters showed that PG treatment alleviated the levels of Ach, AchE, and inflammatory factors while elevating the levels of antioxidants in mice. In addition, network pharmacology was performed to reveal PG exert an mild cognitive impairment effect by participating in neurodegenerative disease pathways, proliferation and apoptosis-, and inflammation-related pathways. Eventually, the results of molecular docking and the qRT-PCR revealed that PG down-regulated the mRNA expressions of MMP3, MMP9 and BACE1 in cognitive impairment mice brain tissue. In conclusion, our results demonstrated that PG mitigated scopolamine-induced cognitive dysfunction in mice by targeting the BACE1-MMP3/9 pathway, and PG might be a promising mild AD drug candidate.
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Thawkar BS, Kaur G. Betanin mitigates scopolamine-induced cognitive impairment by restoring cholinergic function, boosting brain antioxidative status, and increasing BDNF level in the zebrafish model. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:335-349. [PMID: 36991213 DOI: 10.1007/s10695-023-01185-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 03/15/2023] [Indexed: 05/04/2023]
Abstract
Betalains obtained from Beta vulgaris (family Caryophyllales) are regularly consumed as part of the regular diet with medicinal benefits due to antioxidant and anti-inflammatory properties. The objective of this article was to evaluate betanin's neuroprotective properties in a scopolamine-induced zebrafish paradigm. Betanin (BET) (50, 100, and 200 mg/L), and donepezil (10 mg/L) were delivered to zebrafish in a treatment tank once a day for 8 days, while memory impairment was produced by scopolamine (100 µM), which was given 60 min before behavioral assessments. The treatment dosages were determined based on acute toxicity studies. The existence of betacyanin and betaxanthins of BET was tested using liquid chromatography-mass spectrometry (LC-MS). The Y-maze task was used to examine the novelty and spatial memory, while the novel tank diving test was used to assess anxiety-like behavior (NTT). The activities of acetylcholinesterase (AChE) and the oxidative stress sensitivity in zebrafish brains were examined. Also, brain-derived neurotrophic factor (BDNF) level is quantified by an ELISA kit. Scopolamine-induced rises in AChE activity, memory loss, anxiety, and brain oxidant capacity were all reduced by BET. These results suggest that BET (50 and 100 mg/L) has a therapeutic ability to treat brain oxidative stress and cognitive deficits in amnesic zebrafish.
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Affiliation(s)
- Baban S Thawkar
- Department of Pharmacology, SPP School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai, 400056, India
| | - Ginpreet Kaur
- Department of Pharmacology, SPP School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai, 400056, India.
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Dong X, Zhou S, Nao J. Kaempferol as a therapeutic agent in Alzheimer's disease: Evidence from preclinical studies. Ageing Res Rev 2023; 87:101910. [PMID: 36924572 DOI: 10.1016/j.arr.2023.101910] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/06/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common type of dementia and seriously affects human life and health. Kaempferol (KMP) is a common flavonoid, that is mainly derived from the rhizomes of Kaempferol galanga L. and is widely found in various fruits and vegetables. Previous studies have suggested that KMP has multiple pharmacological activities. However, the anti-AD mechanism of KMP has not been elucidated. METHODS This systematic review aims to summarize the existing preclinical experiments on KMP, further confirm the therapeutic effect of KMP in an AD model, and summarize the possible mechanism by which KMP exerts anti-AD effects. Electronic databases, including PubMed, China National Knowledge Infrastructure (CNKI), Baidu Academic, and Wanfang, were searched using the keywords of 'Kaempferol,' 'KMP,' 'pharmacology,' and 'Alzheimer's disease'. RESULTS We evaluated the reliability of the 12 included studies, and the results showed that the anti-AD mechanism of KMP was reliable and that the prospect of KMP in the treatment of cognitive impairment was promising. We comprehensively assessed the neuroprotective effects of KMP in in vivo and in vitro models of AD. These studies shown that KMP ameliorated AD through several mechanisms, including its antioxidant, anti-inflammatory, anti-apoptotic, and anti-acetylcholinesterase effects. CONCLUSION KMP may exert anti-AD effects through various mechanisms and is a potential drug with broad prospects for the treatment of AD.
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Affiliation(s)
- Xiaoyu Dong
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, PR China.
| | - Siyu Zhou
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, PR China
| | - Jianfei Nao
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, PR China.
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Waiker D, Verma A, Saraf P, T.A. G, Krishnamurthy S, Chaurasia RN, Shrivastava SK. Development and Evaluation of Some Molecular Hybrids of N-(1-Benzylpiperidin-4-yl)-2-((5-phenyl-1,3,4-oxadiazol-2-yl)thio) as Multifunctional Agents to Combat Alzheimer's Disease. ACS OMEGA 2023; 8:9394-9414. [PMID: 36936338 PMCID: PMC10018501 DOI: 10.1021/acsomega.2c08061] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
A series of some novel compounds (SD-1-17) were designed following a molecular hybridization approach, synthesized, and biologically tested for hAChE, hBChE, hBACE-1, and Aβ aggregation inhibition potential to improve cognition and memory functions associated with Alzheimer's disease. Compounds SD-4 and SD-6 have shown multifunctional inhibitory profiles against hAChE, hBChE, and hBACE-1 enzymes in vitro. Compounds SD-4 and SD-6 have also shown anti-Aβ aggregation potential in self- and acetylcholinesterase (AChE)-induced thioflavin T assay. Both compounds have shown a significant propidium iodide (PI) displacement from the cholinesterase-peripheral active site (ChE-PAS) region with excellent blood-brain barrier (BBB) permeability and devoid of neurotoxic liabilities. Compound SD-6 ameliorates cognition and memory functions in scopolamine- and Aβ-induced behavioral rat models of Alzheimer's disease (AD). Ex vivo biochemical estimation revealed a significant decrease in malonaldehyde (MDA) and AChE levels, while a substantial increase of superoxide dismutase (SOD), catalase, glutathione (GSH), and ACh levels is seen in the hippocampal brain homogenates. The histopathological examination of brain slices also revealed no sign of neuronal or any tissue damage in the SD-6-treated experimental animals. The in silico molecular docking results of compounds SD-4 and SD-6 showed their binding with hChE-catalytic anionic site (CAS), PAS, and the catalytic dyad residues of the hBACE-1 enzymes. A 100 ns molecular dynamic simulation study of both compounds with ChE and hBACE-1 enzymes also confirmed the ligand-protein complex's stability, while quikprop analysis suggested drug-like properties of the compounds.
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Affiliation(s)
- Digambar
Kumar Waiker
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
and Technology, Indian Institute of Technology-Banaras
Hindu University, Varanasi 221005, India
| | - Akash Verma
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
and Technology, Indian Institute of Technology-Banaras
Hindu University, Varanasi 221005, India
| | - Poorvi Saraf
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
and Technology, Indian Institute of Technology-Banaras
Hindu University, Varanasi 221005, India
| | - Gajendra T.A.
- Neurotherapeutics
Research Laboratory, Department of Pharmaceutical Engineering and
Technology, Indian Institute of Technology-Banaras
Hindu University, Varanasi 221005, India
| | - Sairam Krishnamurthy
- Neurotherapeutics
Research Laboratory, Department of Pharmaceutical Engineering and
Technology, Indian Institute of Technology-Banaras
Hindu University, Varanasi 221005, India
| | - Rameshwar Nath Chaurasia
- Institute
of Medical Sciences, Faculty of Medicine, Department of Neurology, Banaras Hindu University, Varanasi 221005, India
| | - Sushant Kumar Shrivastava
- Pharmaceutical
Chemistry Research Laboratory, Department of Pharmaceutical Engineering
and Technology, Indian Institute of Technology-Banaras
Hindu University, Varanasi 221005, India
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Bhanukiran K, T A G, Krishnamurthy S, Singh SK, Hemalatha S. Discovery of multi-target directed 3-OH pyrrolidine derivatives through a semisynthetic approach from alkaloid vasicine for the treatment of Alzheimer's disease. Eur J Med Chem 2023; 249:115145. [PMID: 36706620 DOI: 10.1016/j.ejmech.2023.115145] [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: 12/17/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023]
Abstract
Vasicine is a pyrroloquinazoline alkaloid, which has been isolated from the plant Adhatoda vasica. Naturally inspired semi-synthetic transformations were prepared using vasicine as a synthetic precursor to overcome Alzheimer's disease (AD). These semi-synthetic analogs exhibited stable interactions and were well resided at AChE and BChE active sites in in-silico studies. Further, in-vitro experiments were performed to assess the cholinesterase inhibitory activity and reduction of amyloid-beta (Aβ1-42) plaques potency, PAMPA assay permeability, and antioxidant activity, these findings suggested that compound VA10 can be a lead molecule among all the synthesized analogs. The compound VA10 binds towards AChE peripheral anionic site (PAS) property was established through propidium iodide displacement assay. Moreover, VA10 showed no notable cytotoxicity and exhibited neuroprotective nature on Aβ1-42 treated SH-SY5Y cell line. In addition, VA10 was found to be safe in rats, which was confirmed by acute oral toxicity studies. Furthermore, in-vivo studies suggested that compound VA10 (10 mg/kg, p.o) ameliorated the memory and cognition impairment in scopolamine-induced amnesia model and Aβ1-42 induced Alzheimer rat model. Ex-vivo studies of compound VA10 demonstrate improved ACh levels by inhibiting AChE activity in rat brain. Moreover, histopathological observations on rats brain sections indicate VA10 (10 mg/kg, p.o) recovered the neuronal cells at hippocampus region (DG, CA3, and CA1). These positive experimental data from in-silico, in-vitro and in-vivo studies, suggested that compound VA10 can be a lead compound for further preclinical development studies as a naturally derived alkaloid for anti-AD.
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Affiliation(s)
- Kancharla Bhanukiran
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Gajendra T A
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Sairam Krishnamurthy
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Sushil Kumar Singh
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Siva Hemalatha
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
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Pressman P, Clemens R, Hayes AW. Significant shifts in preclinical and clinical neurotoxicology: a review and commentary. Toxicol Mech Methods 2023; 33:173-182. [PMID: 35920262 DOI: 10.1080/15376516.2022.2109228] [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] [Indexed: 10/16/2022]
Abstract
The ever-expanding prevalence of adverse neurotoxic reactions of the brain in response to therapeutic and recreational drugs, dietary supplements, environmental hazards, cosmetic ingredients, a spectrum of herbals, health status, and environmental stressors continues to prompt the development of novel cell-based assays to better determine neurotoxic hazard. Neurotoxicants may cause direct and epigenetic damage to the nervous tissue and alter the chemistry, structure, or normal activity of the nervous system. In severe neurotoxicity due to exposure to physical or psychosocial toxicants, neurons are disrupted or killed, and a consistent pattern of clinical neural dysfunction appears. In utero exposure to neurotoxicants can lead to altered development of the nervous system [developmental neurotoxicity (DNT)]. Patients with certain disorders and certain genomic makeup may be particularly susceptible to neurotoxicants. Traditional cytotoxicity measurements, like cell death, are easy to measure, but insufficient at identifying current routine biomarkers of toxicity including functional impairment in cell communication, which often occurs before or even in the absence of cell death. The present paper examines some of the limitations of existing neurotoxicology in light of the increasing need to develop tools to meet the challenges of achieving greater sensitivity in detection and developing and standardizing methods for exploring the toxicologic risk of such neurotoxic entities as engineered nanomaterials and even variables associated with poverty.
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Affiliation(s)
- Peter Pressman
- Clinical Medicine, Saba University School of Medicine, The Bottom, Caribbean, The Netherlands
| | - Roger Clemens
- School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - A Wallace Hayes
- College of Public Health, University of South Florida, Tampa, FL, USA
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Effect of Sinapic Acid on Scopolamine-Induced Learning and Memory Impairment in SD Rats. Brain Sci 2023; 13:brainsci13030427. [PMID: 36979237 PMCID: PMC10046676 DOI: 10.3390/brainsci13030427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 03/06/2023] Open
Abstract
The seriousness of the diseases caused by aging have recently gained attention. Alzheimer’s disease (AD), a chronic neurodegenerative disease, accounts for 60–80% of senile dementia cases. Continuous research is being conducted on the cause of Alzheimer’s disease, and it is believed to include complex factors, such as genetic factors, the accumulation of amyloid beta plaques, a tangle of tau protein, oxidative stress, cholinergic dysfunction, neuroinflammation, and cell death. Sinapic acid is a hydroxycinnamic acid found in plant families, such as oranges, grapefruit, cranberry, mustard seeds, and rapeseeds. It exhibits various biological activities, including anti-inflammatory, anti-oxidant, anti-cancer, and anti-depressant effects. Sinapic acid is an acetylcholine esterase inhibitor that can be applied to the treatment of dementia caused by Alzheimer’s disease and Parkinson’s disease. However, electrophysiological studies on the effects of sinapic acid on memory and learning must still be conducted. Therefore, it was confirmed that sinapic acid was effective in long-term potentiation (LTP) using organotypic hippocampal segment tissue. In addition, the effect on scopolamine-induced learning and memory impairment was measured by oral administration of sinapic acid 10 mg/kg/day for 14 days, and behavioral experiments related to short-term and long-term spatial memory and avoidance memory were conducted. Sinapic acid increased the activity of the field excitatory postsynaptic potential (fEPSP) in a dose-dependent manner after TBS, and restored fEPSP activity in the CA1 region suppressed by scopolamine. The scopolamine-induced learning and memory impairment group showed lower results than the control group in the Y-maze, Passive avoidance (PA), and Morris water maze (MWM) experiments. Sinapic acid improved avoidance memory, short and long-term spatial recognition learning, and memory. In addition, sinapic acid weakened the inhibition of the brain-derived neurotrophic factor (BDNF), tropomyosin receptor kinase B (TrkB) and the activation of prostaglandin-endoperoxide synthase 2 (COX-2) and interleukin 1 beta (IL-1β) induced by scopolamine in the hippocampus. These results show that sinapic acid is effective in restoring LTP and cognitive impairment induced by the cholinergic receptor blockade. Moreover, it showed the effect of alleviating the reduction in scopolamine-induced BDNF and TrkB, and alleviated neuroinflammatory effects by inhibiting the increase in COX-2 and IL-1β. Therefore, we showed that sinapic acid has potential as a treatment for neurodegenerative cognitive impairment.
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Gupta U, Baig S, Majid A, Bell SM. The neurology of space flight; How does space flight effect the human nervous system? LIFE SCIENCES IN SPACE RESEARCH 2023; 36:105-115. [PMID: 36682819 DOI: 10.1016/j.lssr.2022.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 06/17/2023]
Abstract
RATIONALE AND HYPOTHESIS Advancements in technology, human adaptability, and funding have increased space exploration and in turn commercial spaceflight. Corporations such as Space X and Blue Origin are exploring methods to make space tourism possible. This could lead to an increase in the number of patients presenting with neurological diseases associated with spaceflight. Therefore, a comprehensive understanding of spaceflight stressors is required to manage neurological disease in high-risk individuals. OBJECTIVES This review aims to describe the neurological effects of spaceflight and to assess countermeasures such as pre-flight prophylaxis, training, and possible therapeutics to reduce long-term effects. METHODOLOGY A literature search was performed for experimental studies conducted in astronauts and in animal models that simulated the space environment. Many studies, however, only discussed these with scientific reasoning and did not include any experimental methods. Relevant studies were identified through searching research databases such as PubMed and Google Scholar. No inclusion or exclusion criteria were used. FINDINGS Analysis of these studies provided a holistic understanding of the acute and chronic neurological changes that occur during space flight. Astronauts are exposed to hazards that include microgravity, cosmic radiation, hypercapnia, isolation, confinement and disrupted circadian rhythms. Microgravity, the absence of a gravitational force, is linked to disturbances in the vestibular system, intracranial and intraocular pressures. Furthermore, microgravity affects near field vision as part of the spaceflight-associated neuro-ocular syndrome. Exposure to cosmic radiation can increase the risk of neurodegenerative conditions and malignancies. It is estimated that cosmic radiation has significantly higher ionising capabilities than the ionising radiation used in medicine. Space travel also has potential benefits to the nervous system, including psychological development and effects on learning and memory. Future work needs to focus on how we can compare a current astronaut to a future space tourist. Potentially the physiological and psychological stresses of space flight might lead to neurological complications in future space travellers that do not have the physiological reserve of current astronauts.
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Affiliation(s)
- Udit Gupta
- Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, 385a Glossop Road, Sheffield and S10 2HQ, United Kingdom
| | - Sheharyar Baig
- Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, 385a Glossop Road, Sheffield and S10 2HQ, United Kingdom; Department of Clinical Neurology, Royal Hallamshire Hospital, Glossop Road, Sheffield, United Kingdom
| | - Arshad Majid
- Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, 385a Glossop Road, Sheffield and S10 2HQ, United Kingdom; Department of Clinical Neurology, Royal Hallamshire Hospital, Glossop Road, Sheffield, United Kingdom
| | - Simon M Bell
- Sheffield Institute for Translational Neuroscience (SITraN), University of Sheffield, 385a Glossop Road, Sheffield and S10 2HQ, United Kingdom; Department of Clinical Neurology, Royal Hallamshire Hospital, Glossop Road, Sheffield, United Kingdom.
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Kazmi I, Al-Abbasi FA, Afzal M, Shahid Nadeem M, Altayb HN. Sterubin protects against chemically-induced Alzheimer's disease by reducing biomarkers of inflammation- IL-6/ IL-β/ TNF-α and oxidative stress- SOD/MDA in rats. Saudi J Biol Sci 2023; 30:103560. [PMID: 36712184 PMCID: PMC9876951 DOI: 10.1016/j.sjbs.2023.103560] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/08/2022] [Accepted: 01/08/2023] [Indexed: 01/15/2023] Open
Abstract
Sterubin, a flavanone is an active chemical compound that possesses neuroprotective activity. The current investigation was intended to assess the sterubin effect in scopolamine-activated Alzheimer's disease. The rats were induced with scopolamine (1.5 mg/kg) followed by treatment with sterubin (10 mg/kg) for 14 days. Behavioural analysis was predictable by the Y-maze test and Morris water test. Biochemical variables like nitric oxide acetylcholinesterase, Choline acetyltransferase, antioxidant markers like superoxide dismutase, glutathione transferase, malondialdehyde, catalase, and myeloperoxidase activity, neuroinflammatory markers such as tumor necrosis factor-alpha, nuclear factor kappa B, interferon-gamma, interleukin (IL-1β), and IL-6 were measured. The result stated that sterubin reversed the oxidative stress parameters, increased motor performance, and lowered the inflammatory markers in scopolamine-induced rats. The study demonstrated that sterubin possesses neuroprotective, anti-inflammatory, and antioxidant properties which can be used as a beneficial medication in AD.
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Key Words
- Acetylcholinesterase, AChE
- Alzheimer’s disease
- Alzheimer’s disease, AD
- Catalase, CAT
- Choline acetyltransferase, ChAT
- Morris water maze, MWM
- Myeloperoxidase, MPO
- Neuroinflammatory markers
- Neuroprotective
- Oxidative stress
- Reduced glutathione, GSH
- Scopolamine
- Scopolamine, SCOP
- Sterubin
- acetylcholinesterase, ACh
- interferon, IFN
- interleukin, IL
- reactive oxygen species, ROS
- tumor necrosis factor, TNF
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Affiliation(s)
- Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Corresponding author.
| | - Fahad A. Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Muhammad Afzal
- Department of Pharmacology, Himalayan Institute of Pharmacy and Research, Rajawala, Dehradun, Uttarakhand, India
| | - Muhammad Shahid Nadeem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hisham N. Altayb
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Huang T, Lee S, Lee T, Yun S, Kim Y, Yang H. Smart Farming Enhances Bioactive Compounds Content of Panax ginseng on Moderating Scopolamine-Induced Memory Deficits and Neuroinflammation. PLANTS (BASEL, SWITZERLAND) 2023; 12:640. [PMID: 36771724 PMCID: PMC9920294 DOI: 10.3390/plants12030640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/20/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Korean ginseng (Panax ginseng) is a traditional herbal supplement known to have a variety of pharmacological activities. A smart farm system could provide potential standardization of ginseng seedlings after investigating plant metabolic responses to various parameters in order to design optimal conditions. This research was performed to investigate the effect of smart-farmed ginseng on memory improvement in a scopolamine-induced memory deficit mouse model and an LPS-induced microglial cell model. A smart farming system was applied to culture ginseng. The administration of its extract (S2 extract) under specific culture conditions significantly attenuated cognitive and spatial memory deficits by regulating AKT/ERK/CREB signaling, as well as the cortical inflammation associated with suppression of COX-2 and NLRP3 induced by scopolamine. In addition, S2 extract improved the activation of iNOS and COX-2, and the secretion of NO in LPS-induced BV-2 microglia. Based on the HPLC fingerprint and in vitro data, ginsenosides Rb2 and Rd were found to be the main contributors to the anti-inflammatory effects of the S2 extract. Our findings suggest that integrating a smart farm system may enhance the metabolic productivity of ginseng and provides evidence of its potential impact on natural bioactive compounds of medicinal plants with beneficial qualities, such as ginsenosides Rb2 and Rd.
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Affiliation(s)
- Tianqi Huang
- Department of Integrative Biological Sciences and Industry and Convergence Research Center for Natural Products, Sejong University, Seoul 05006, Republic of Korea
- Korea Institute of Science and Technology (KIST) School, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Sangbin Lee
- Department of Integrative Biological Sciences and Industry and Convergence Research Center for Natural Products, Sejong University, Seoul 05006, Republic of Korea
| | - Teamin Lee
- Department of Integrative Biological Sciences and Industry and Convergence Research Center for Natural Products, Sejong University, Seoul 05006, Republic of Korea
| | - Seungbeom Yun
- R&D Center, BTC Corporation, Technology Development Center, Gyeonggi Technopark, 705, Ansan 15588, Republic of Korea
| | - Yongduk Kim
- R&D Center, BTC Corporation, Technology Development Center, Gyeonggi Technopark, 705, Ansan 15588, Republic of Korea
| | - Hyunok Yang
- Department of Integrative Biological Sciences and Industry and Convergence Research Center for Natural Products, Sejong University, Seoul 05006, Republic of Korea
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