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López Hanotte J, Peralta F, Reggiani PC, Zappa Villar MF. Investigating the Impact of Intracerebroventricular Streptozotocin on Female Rats with and without Ovaries: Implications for Alzheimer's Disease. Neurochem Res 2024:10.1007/s11064-024-04204-x. [PMID: 38985243 DOI: 10.1007/s11064-024-04204-x] [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: 05/03/2024] [Revised: 06/12/2024] [Accepted: 06/25/2024] [Indexed: 07/11/2024]
Abstract
To contribute to research on female models of Alzheimer's disease (AD), our aim was to study the effect of intracerebroventricular (ICV) injection of streptozotocin (STZ) in female rats, and to evaluate a potential neuroprotective action of ovarian steroids against STZ. Female rats were either ovariectomized (OVX) or kept with ovaries (Sham) two weeks before ICV injections. Animals were injected with either vehicle (artificial cerebrospinal fluid, aCSF) or STZ (3 mg/kg) and separated into four experimental groups: Sham + aCSF, Sham + STZ, OVX + aCSF and OVX + STZ. Nineteen days post-injection, we assessed different behavioral aspects: burying, anxiety and exploration, object recognition memory, spatial memory, and depressive-like behavior. Immunohistochemistry and Immunoblot analyses were performed in the hippocampus to examine changes in AD-related proteins and neuronal and microglial populations. STZ affected burying and exploratory behavior depending on ovarian status, and impaired recognition but not spatial memory. STZ and ovariectomy increased depressive-like behavior. Interestingly, STZ did not alter the expression of β-amyloid peptide or Tau phosphorylated forms. STZ affected the neuronal population from the Dentate Gyrus, where immature neurons were more vulnerable to STZ in OVX rats. Regarding microglia, STZ increased reactive cells, and the OVX + STZ group showed an increase in the total cell number. In sum, STZ partially affected female rats, compared to what was previously reported for males. Although AD is more frequent in women, reports about the effect of ICV-STZ in female rats are scarce. Our work highlights the need to deepen into the effects of STZ in the female brain and study possible sex differences.
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Affiliation(s)
- Juliette López Hanotte
- Instituto de Investigaciones Bioquímicas de La Plata "Profesor Doctor Rodolfo R. Brenner", Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
| | - Facundo Peralta
- Instituto de Investigaciones Bioquímicas de La Plata "Profesor Doctor Rodolfo R. Brenner", Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
| | - Paula Cecilia Reggiani
- Instituto de Investigaciones Bioquímicas de La Plata "Profesor Doctor Rodolfo R. Brenner", Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina.
- Cátedra de Citología, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina.
| | - María Florencia Zappa Villar
- Instituto de Investigaciones Bioquímicas de La Plata "Profesor Doctor Rodolfo R. Brenner", Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina.
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Javed H, Meeran MFN, Jha NK, Ashraf GM, Ojha S. Sesamol: A Phenolic Compound of Health Benefits and Therapeutic Promise in Neurodegenerative Diseases. Curr Top Med Chem 2024; 24:797-809. [PMID: 38141184 DOI: 10.2174/0115680266273944231213070916] [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: 08/12/2023] [Revised: 10/22/2023] [Accepted: 10/25/2023] [Indexed: 12/25/2023]
Abstract
Sesamol, one of the key bioactive ingredients of sesame seeds (Sesamum indicum L.), is responsible for many of its possible nutritional benefits. Both the Chinese and Indian medical systems have recognized the therapeutic potential of sesame seeds. It has been shown to have significant therapeutic potential against oxidative stress, inflammatory diseases, metabolic syndrome, neurodegeneration, and mental disorders. Sesamol is a benign molecule that inhibits the expression of inflammatory indicators like numerous enzymes responsible for inducing inflammation, protein kinases, cytokines, and redox status. This review summarises the potential beneficial effects of sesamol against neurological diseases including Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD). Recently, sesamol has been shown to reduce amyloid peptide accumulation and attenuate cognitive deficits in AD models. Sesamol has also been demonstrated to reduce the severity of PD and HD in animal models by decreasing oxidative stress and inflammatory pathways. The mechanism of sesamol's pharmacological activities against neurodegenerative diseases will also be discussed in this review.
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Affiliation(s)
- Hayate Javed
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, United Arab Emirates
| | - Mohamed Fizur Nagoor Meeran
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, United Arab Emirates
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, 201310, UP, India
- Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun, 248007, India
- Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, 140413, India
| | - Ghulam Md Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, Sharjah Institute for Medical Research, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, United Arab Emirates
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Rajkumar M, Navaneethakrishnan S, Muthukumar S, Thangaraj R, Sivanandam M, Vimala K, Kannan S. Gelatin/polyethylene glycol-loaded magnesium hydroxide nanocomposite to attenuate acetylcholinesterase, neurotoxicity, and activation of GPR55 protein in rat models of Alzheimer's disease. J Chem Neuroanat 2023; 133:102337. [PMID: 37708946 DOI: 10.1016/j.jchemneu.2023.102337] [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: 06/20/2023] [Revised: 09/05/2023] [Accepted: 09/05/2023] [Indexed: 09/16/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease marked by mitochondrial dysfunction, amyloid-β (Aβ) aggregation, and neuronal cell loss. G-protein-coupled receptor 55 (GPR55) has been used as a promising target for insulin receptors in diabetes therapy, but GPR55's role in AD is still unidentified. Gelatin (GE) and polyethylene glycol (PEG) polymeric hydrogels are commonly used in the drug delivery system. Therefore, the aim of the present study was the preparation of magnesium hydroxide nanocomposite using Clitoria ternatea (CT) flower extract, GE, and PEG (GE/PEG/Mg(OH)2NCs) by the green precipitation method. The synthesized GE/PEG/Mg(OH)2NCs were used to determine the effect of GPR55 activation of intracerebroventricular administration on streptozotocin (ICV-STC)-induced cholinergic dysfunction, oxidative stress, neuroinflammation, and cognitive deficits. The GE/PEG/Mg(OH)2NCs were administered following bilateral ICV-STC administration (3 mg/kg) in experimental rats. Neurobehavioral assessments were performed using a Morris water maze (MWM) and a passive avoidance test (PA). Cholinergic and antioxidant activity, oxidative stress, and mitochondrial complex activity were estimated in the cortex and hippocampus through biochemical analysis. Inflammatory markers (TNF-α, IL-6, and IL-1β) were determined using the ELISA method. Our study results demonstrated that the GE/PEG/Mg(OH)2NCs treatment significantly improved spatial and non-spatial memory functions in behavioral studies. Moreover, the treatment with GE/PEG/Mg(OH)2NCs group significantly attenuated cholinergic dysfunction, oxidative stress, and inflammatory markers, and also highly improved anti-oxidant activity (GSH, SOD, CAT, and GPx) in the cortex and hippocampus regions. The western blot results suggest the activation of the GPR55 protein expression through GE/PEG/Mg(OH)2NCs. The histopathological studies showed clear cytoplasm and healthy neurons, effectively promoting neuronal activity. Furthermore, the molecular docking results demonstrated the binding affinity and potential interactions of the compounds with the AChE enzyme. In conclusion, the GE/PEG/Mg(OH)2NCs treated groups showed reduced neurotoxicity and have the potential as a therapeutic agent to effectively target AD.
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Affiliation(s)
- Manickam Rajkumar
- Cancer Nanomedicine Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Sundarraj Navaneethakrishnan
- Cancer Nanomedicine Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Sundarapandian Muthukumar
- Cancer Nanomedicine Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Ramasundaram Thangaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Magudeeswaran Sivanandam
- Department of Physics, Center for Research and Development, KPR Institute of Engineering and Technology, Coimbatore, 641 407, Tamil Nadu, India
| | - Karuppaiya Vimala
- Cancer Nanomedicine Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Soundarapandian Kannan
- Cancer Nanomedicine Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India.
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Singh L, Singh S. Neuroprotective potential of Honokiol in ICV-STZ induced neuroinflammation, Aβ (1-42) and NF-kB expression in experimental model of rats. Neurosci Lett 2023; 799:137090. [PMID: 36690059 DOI: 10.1016/j.neulet.2023.137090] [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: 01/02/2023] [Accepted: 01/18/2023] [Indexed: 01/21/2023]
Abstract
Alzheimer's disease (AD) is a most common and prevalent age related insidious neurological condition characterised by formation of Aβ (1-42) plaques and NFT in the hippocampus. Major symptoms of AD include memory and cognitive loss caused by neuroinflammation, Aβ (1-42) plaques, and NFT accumulation in the brain. Intracerebroventricular administration of STZ up-regulates the level of Aβ (1-42) plaques, and NFT by activating NF-kB pathway. All animals were trained for behaviour analysis before infusion of ICV-STZ bilaterally, at a dose of 3 mg/kg; icv. The stereotaxic surgery was performed in target region with coordinates -2 mm [AP], 1.6 mm [MR], and1.5 mm [DV]. On day 1 and day 3 after surgery HS (hamilton syringe) was used to infuse STZ at the target region of brain. Morris Water Maze (MWM), and Elevated Plus Maze (EPM) tests were performed to check spatial and learning memory in all groups. ICV-STZ infusion produced memory impairment by increasing the activity of AchE, oxidative markers (LPO, GSH, and nitrite), neurotransmitters levels (AchE, GABA, and glutamate), and release of neuroinflammatory markers (NF-kB, IL-6, and IL-1β). The treatment with Honokiol (Bioactive polyphenolic compound) significantly ameliorated the behavioural changes at a dose of 5, and 10 mg/kg; i.p on day 7, 14, and 21. After behavioural analysis rats were sacrificed on day 22, and the hippocampus tissue was collected to investigate the biochemical, neuroinflammatory, neurotransmitters, histopathological, and immunohistopathological changes. Here, we have found Honokiol significantly down regulates the Aβ plaques via NF-kB inhibition and also reduced neuroinflammation in the brain of rats. Further inhibits the NF-kB expression confirmed for immunohistochemistry analysis. It was observed that Honokiol (5, and 10 mg/kg; i.p) dose-dependently ameliorated AchE level restored neurotransmitters concentrations in hippocampal region, and prevented neuronal loss confirmed from histopathology studies. We concluded that Honokiol drastically produced protective effect in AD model via antioxidant, reducing inflammation, AchE level, restoration of neurofibrillary tangles and preventing NF-kB as well as histopathological changes.
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Affiliation(s)
- Lovekesh Singh
- Neuropharmacology division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab 142001, India
| | - Shamsher Singh
- Neuropharmacology division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab 142001, India.
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Nair AB, Dalal P, Kadian V, Kumar S, Garg M, Rao R, Almuqbil RM, Alnaim AS, Aldhubiab B, Alqattan F. Formulation Strategies for Enhancing Pharmaceutical and Nutraceutical Potential of Sesamol: A Natural Phenolic Bioactive. PLANTS (BASEL, SWITZERLAND) 2023; 12:1168. [PMID: 36904028 PMCID: PMC10005287 DOI: 10.3390/plants12051168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Natural plants and their products continue to be the major source of phytoconstituents in food and therapeutics. Scientific studies have evidenced the benefits of sesame oil and its bioactives in various health conditions. Various bioactives present in it include sesamin, sasamolin, sesaminol, and sesamol; among these, sesamol represents a major constituent. This bioactive is responsible for preventing various diseases including cancer, hepatic disorders, cardiac ailments, and neurological diseases. In the last decade, the application of sesamol in the management of various disorders has attracted the increasing interest of the research community. Owing to its prominent pharmacological activities, such as antioxidant, antiinflammatory, antineoplastic, and antimicrobial, sesamol has been explored for the above-mentioned disorders. However, despite the above-mentioned therapeutic potential, its clinical utility is mainly hindered owing to low solubility, stability, bioavailability, and rapid clearance issues. In this regard, numerous strategies have been explored to surpass these restrictions with the formulation of novel carrier platforms. This review aims to describe the various reports and summarize the different pharmacological activities of sesamol. Furthermore, one part of this review is devoted to formulating strategies to improve sesamol's challenges. To resolve the issues such as the stability, low bioavailability, and high systemic clearance of sesamol, novel carrier systems have been developed to open a new avenue to utilize this bioactive as an efficient first-line treatment for various diseases.
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Affiliation(s)
- Anroop B. Nair
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Pooja Dalal
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
| | - Varsha Kadian
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
| | - Sunil Kumar
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
- Atam Institute of Pharmacy, Om Sterling Global University, Hisar 125001, India
| | - Minakshi Garg
- School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences and Research University, New Delhi 110017, India
| | - Rekha Rao
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
| | - Rashed M. Almuqbil
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Ahmed S. Alnaim
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Bandar Aldhubiab
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Fatemah Alqattan
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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Paramanick D, Singh VD, Singh VK. Neuroprotective effect of phytoconstituents via nanotechnology for treatment of Alzheimer diseases. J Control Release 2022; 351:638-655. [DOI: 10.1016/j.jconrel.2022.09.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 11/26/2022]
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Rajkumar M, Vimala K, Tamiliniyan DD, Thangaraj R, Jaganathan R, Kumaradhas P, Kannan S. Gelatin/polyvinyl alcohol loaded magnesium hydroxide nanocomposite attenuates neurotoxicity and oxidative stress in Alzheimer's disease induced rats. Int J Biol Macromol 2022; 222:2122-2143. [DOI: 10.1016/j.ijbiomac.2022.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 09/30/2022] [Accepted: 10/02/2022] [Indexed: 11/05/2022]
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Abou-Zeid SM, Elkhadrawey BA, Anis A, AbuBakr HO, El-Bialy BE, Elsabbagh HS, El-Borai NB. Neuroprotective effect of sesamol against aluminum nanoparticle-induced toxicity in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:53767-53780. [PMID: 34037932 DOI: 10.1007/s11356-021-14587-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Alumina nanoparticles (ALNPs) are widely used causing neurobehavioral impairment in intoxicated animals and humans. Sesamol (SML) emerged as a natural phytochemical with potent antioxidant and anti-inflammatory properties. However, no study has directly tested the potential of SML to protect against AlNP-induced detrimental effects on the brain. AlNPs (100 mg/kg) were orally administered to rats by gavage with or without oral sesamol (100 mg/kg) for 28 days. In AlNP-intoxicated group, the brain AChE activity was elevated. The concentrations of MDA and 8-OHdG were increased suggesting lipid peroxidation and oxidative DNA damage. GSH depletion with inhibited activities of CAT and SOD were demonstrated. Serum levels of IL-1β and IL-6 were elevated. The expressions of GST, TNF-α, and caspase-3 genes in the brain were upregulated. Histopathologically, AlNPs induced hemorrhages, edema, neuronal necrosis, and/or apoptosis in medulla oblongata. The cerebellum showed loss of Purkinje cells, and the cerebrum showed perivascular edema, neuronal degeneration, necrosis, and neuronal apoptosis. However, concomitant administration of SML with AlNPs significantly ameliorated the toxic effects on the brain, reflecting antioxidant, anti-inflammatory, and anti-apoptotic effects of SML. Considering these results, sesamol could be a promising phytochemical with neuroprotective activity against AlNP-induced neurotoxicity.
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Affiliation(s)
- Shimaa M Abou-Zeid
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt.
| | - Basma A Elkhadrawey
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Anis Anis
- Department of Pathology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Huda O AbuBakr
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Badr E El-Bialy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Hesham S Elsabbagh
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
| | - Nermeen B El-Borai
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, 32897, Egypt
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Bosebabu B, Cheruku SP, Chamallamudi MR, Nampoothiri M, Shenoy RR, Nandakumar K, Parihar VK, Kumar N. An Appraisal of Current Pharmacological Perspectives of Sesamol: A Review. Mini Rev Med Chem 2020; 20:988-1000. [DOI: 10.2174/1389557520666200313120419] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/20/2019] [Accepted: 02/06/2020] [Indexed: 12/16/2022]
Abstract
Sesame (Sesamum indicum L.) seeds have been authenticated for its medicinal value in both
Chinese and Indian systems of medicine. Its numerous potential nutritional benefits are attributed to its
main bioactive constituents, sesamol. As a result of those studies, several molecular mechanisms are
emerging describing the pleiotropic biological effects of sesamol. This review summarized the most
interesting in vitro and in vivo studies on the biological effects of sesamol. The present work summarises
data available from Pubmed and Scopus database. Several molecular mechanisms have been elucidated
describing the pleiotropic biological effects of sesamol. Its major therapeutic effects have been
elicited in managing oxidative and inflammatory conditions, metabolic syndrome and mood disorders.
Further, compelling evidence reflected the ability of sesamol in inhibiting proliferation of the inflammatory
cell, prevention of invasion and angiogenesis via affecting multiple molecular targets and
downstream mechanisms. Sesamol is a safe, non‐toxic chemical that mediates anti‐inflammatory
effects by down‐regulating the transcription of inflammatory markers such as cytokines, redox status,
protein kinases, and enzymes that promote inflammation. In addition, sesamol also induces apoptosis
in cancer cells via mitochondrial and receptor‐mediated pathways, as well as activation of caspase cascades.
In the present review, several pharmacological effects of sesamol are summarised namely, antioxidant,
anti-cancer, neuroprotective, cardioprotective, anti-inflammatory, hypolipidemic, radioprotective,
anti-aging, anti-ulcer, anti-dementia, anti-depressant, antiplatelet, anticonvulsant, anti-anxiolytic,
wound healing, cosmetic (skin whitening), anti-microbial, matrix metalloproteinase (MMPs) inhibition,
hepatoprotective activity and other biological effects. Here we have summarized the proposed
mechanism behind these pharmacological effects.
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Affiliation(s)
- Bellamkonda Bosebabu
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Sri Pragnya Cheruku
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Mallikarjuna Rao Chamallamudi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Rekha R. Shenoy
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Vipan K. Parihar
- Department of Radiation Oncology, University of California, Irvine, CA 92697- 2695, United States
| | - Nitesh Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
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Li Y, Zhang Y, Wang L, Wang P, Xue Y, Li X, Qiao X, Zhang X, Xu T, Liu G, Li P, Chen C. Autophagy impairment mediated by S-nitrosation of ATG4B leads to neurotoxicity in response to hyperglycemia. Autophagy 2018. [PMID: 28633005 DOI: 10.1080/15548627.2017.1320467] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The majority of diabetic patients develop neuropathy and there is an increasing prevalence of neurodegeneration in the central nervous system (CNS). However, the mechanism behind this is poorly understood. Here we first observed that macroautophagy/autophagy was suppressed in the hippocampus of diabetic GK rats with hyperglycemia, whereas it was unchanged in ob/ob mice without hyperglycemia. Autophagy could be directly inhibited by high glucose in mouse primary hippocampal neurons. Moreover, autophagy was protective in high-glucose-induced neurotoxicity. Further studies revealed that autophagic flux was suppressed by high glucose due to impaired autophagosome synthesis illustrated by mRFP-GFP-LC3 puncta analysis. We showed that decreased autophagy was dependent on NO produced under high glucose conditions. Therefore, (LC-MS/MS)-based quantitative proteomic analysis of protein S-nitrosation was performed and a core autophagy protein, ATG4B was found to be S-nitrosated in the hippocampus of GK rats. ATG4B was also verified to be S-nitrosated in neuronal cells cultured with high glucose. The activities of ATG4B in the processing of unmodified, precursor Atg8-family proteins and in the deconjugation of PE from lipidated Atg8-family proteins, which are essential for efficient autophagosome biogenesis were both compromised by S-nitrosation at Cys189 and Cys292 sites. In addition, ATG4B processing of the GABARAPL1 precursor was affected the least by S-nitrosation compared with other substrates. Finally, ATG4B S-nitrosation was verified to be responsible for decreased autophagy and neurotoxicity in response to high glucose. In conclusion, autophagy impairment mediated by S-nitrosation of ATG4B leads to neurotoxicity in response to hyperglycemia. Our research reveals a novel mechanism linking hyperglycemia with CNS neurotoxicity and shows that S-nitrosation is a novel post-transcriptional modification of the core autophagy machinery.
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Affiliation(s)
- Yazi Li
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Yuying Zhang
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China
| | - Lei Wang
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China
| | - Ping Wang
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Yanhong Xue
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China
| | - Xiaopeng Li
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Xinhua Qiao
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Xu Zhang
- c Department of Physiology and Pathophysiology , Tianjin Medical University , Tianjin , China
| | - Tao Xu
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Guanghui Liu
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Peng Li
- d Tsinghua-Peking Center for Life Sciences, School of Life Sciences , Tsinghua University , Beijing , China
| | - Chang Chen
- a National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules , Institute of Biophysics, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China.,e Beijing Institute for Brain Disorders, Youanmen , Beijing , China
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Panzella L, Eidenberger T, Napolitano A. Anti-Amyloid Aggregation Activity of Black Sesame Pigment: Toward a Novel Alzheimer's Disease Preventive Agent. Molecules 2018; 23:E676. [PMID: 29547584 PMCID: PMC6017763 DOI: 10.3390/molecules23030676] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 12/18/2022] Open
Abstract
Black sesame pigment (BSP) represents a low cost, easily accessible material of plant origin exhibiting marked antioxidant and heavy metal-binding properties with potential as a food supplement. We report herein the inhibitory properties of the potentially bioaccessible fraction of BSP following simulated gastrointestinal digestion against key enzymes involved in Alzheimer's disease (AD). HPLC analysis indicated that BSP is transformed under the pH conditions mimicking the intestinal environment and the most abundant of the released compounds was identified as vanillic acid. More than 80% inhibition of acetylcholinesterase-induced aggregation of the β-amyloid Aβ1-40 was observed in the presence of the potentially bioaccessible fraction of BSP, which also efficiently inhibited self-induced Aβ1-42 aggregation and β-secretase (BACE-1) activity, even at high dilution. These properties open new perspectives toward the use of BSP as an ingredient of functional food or as a food supplement for the prevention of AD.
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Affiliation(s)
- Lucia Panzella
- Department of Chemical Sciences, University of Naples "Federico II", Via Cintia 4, I-80126 Naples, Italy.
| | - Thomas Eidenberger
- School of Engineering and Environmental Sciences, Upper Austria University of Applied Sciences, Stelzhamerstraße 23, 4600 Wels, Austria.
| | - Alessandra Napolitano
- Department of Chemical Sciences, University of Naples "Federico II", Via Cintia 4, I-80126 Naples, Italy.
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A benzothiazole/piperazine derivative with acetylcholinesterase inhibitory activity: Improvement in streptozotocin-induced cognitive deficits in rats. Pharmacol Rep 2017; 69:1349-1356. [DOI: 10.1016/j.pharep.2017.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 05/05/2017] [Accepted: 06/16/2017] [Indexed: 01/12/2023]
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13
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Jha AB, Panchal SS. Neuroprotection and cognitive enhancement by treatment with γ-oryzanol in sporadic Alzheimer's disease. J Appl Biomed 2017. [DOI: 10.1016/j.jab.2017.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Vitamin D 3 attenuates cognitive deficits and neuroinflammatory responses in ICV-STZ induced sporadic Alzheimer's disease. Inflammopharmacology 2017; 26:39-55. [PMID: 28702935 DOI: 10.1007/s10787-017-0372-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/01/2017] [Indexed: 10/19/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by intracellular neurofibrillary tangles and extracellular Aβ deposition. Growing experimental evidence indicate diverse biological effects of vitamin D3 including antioxidant, neuroprotective, anti-inflammatory and cardiovascular benefits. However, the underlying neuroprotective mechanism of vitamin D3 is still largely elusive. Therefore, the present study was aimed to investigate the neuroprotective effects of vitamin D3 on ICV-STZ induced sporadic AD. Our study demonstrated that vitamin D3 pretreatment significantly improved spatial learning and memory functions and effectively mitigated ICV-STZ mediated neuronal oxidative stress, mitochondrial aberrations and improved cholinergic functions. Moreover, vitamin D3 attenuated hippocampal neuroinflammatory response and reduced neuronal death in cortex and hippocampus. Our findings indicated that prophylactic vitamin D3 supplementation ameliorated ICV-STZ mediated neurobehavioral alterations, oxidative stress and neuroinflammation thereby improving cholinergic functions and reversed degenerative changes in brain. Thus, our study further provides evidence for its therapeutic supplementation for various neurodegenerative disorders including AD.
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Adesso S, Magnus T, Cuzzocrea S, Campolo M, Rissiek B, Paciello O, Autore G, Pinto A, Marzocco S. Indoxyl Sulfate Affects Glial Function Increasing Oxidative Stress and Neuroinflammation in Chronic Kidney Disease: Interaction between Astrocytes and Microglia. Front Pharmacol 2017; 8:370. [PMID: 28659803 PMCID: PMC5466960 DOI: 10.3389/fphar.2017.00370] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 05/29/2017] [Indexed: 01/09/2023] Open
Abstract
Indoxyl sulfate (IS) is a protein-bound uremic toxin resulting from the metabolism of dietary tryptophan which accumulates in patients with impaired renal function, such as chronic kidney disease (CKD). IS is a well-known nephrovascular toxin but little is known about its effects on central nervous system (CNS) cells. Considering the growing interest in the field of CNS comorbidities in CKD, we studied the effect of IS on CNS cells. IS (15–60 μM) treatment in C6 astrocyte cells increased reactive oxygen species release and decreased nuclear factor (erythroid-derived 2)-like 2 (Nrf2) activation, and heme oxygenase-1 (HO-1) and NAD(P)H dehydrogenase quinone 1 expression. Moreover, IS increased Aryl hydrocarbon Receptor (AhR) and Nuclear Factor-kB (NF-kB) activation in these cells. Similiar observations were made in primary mouse astrocytes and mixed glial cells. Inducible nitric oxide synthase and cyclooxygenase-2 (COX-2) expression, tumor necrosis factor-α and interleukin-6 release and nitrotyrosine formation were increased by IS (15–60 μM) in primary mouse astrocytes and mixed glial cells. IS increased AhR and NF-kB nuclear translocation and reduced Nrf2 translocation and HO-1 expression in primary glial cells. In addition, IS induced cell death in neurons in a dose dependent fashion. Injection of IS (800 mg/kg, i.p.) into mice induced histological changes and increased COX-2 expression and nitrotyrosine formation in thebrain tissue. Taken together, our results show a significant contribution of IS in generating a neurotoxic enviroment and it could also have a potential role in neurodegeneration. IS could be considered also a potential therapeutical target for CKD-associated neurodegenerative complications.
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Affiliation(s)
- Simona Adesso
- Department of Pharmacy, University of SalernoFisciano, Italy.,Ph.D. Program in Drug Discovery and Development, University of SalernoFisciano, Italy
| | - Tim Magnus
- Department of Neurology, University Medical Center Hamburg-EppendorfHamburg, Germany
| | - Salvatore Cuzzocrea
- Department of Biological and Environmental Sciences, University of MessinaMessina, Italy
| | - Michela Campolo
- Department of Biological and Environmental Sciences, University of MessinaMessina, Italy
| | - Björn Rissiek
- Department of Neurology, University Medical Center Hamburg-EppendorfHamburg, Germany
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples "Federico II"Naples, Italy
| | | | - Aldo Pinto
- Department of Pharmacy, University of SalernoFisciano, Italy
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Gao XJ, Xie GN, Liu L, Fu ZJ, Zhang ZW, Teng LZ. Sesamol attenuates oxidative stress, apoptosis and inflammation in focal cerebral ischemia/reperfusion injury. Exp Ther Med 2017; 14:841-847. [PMID: 28673008 DOI: 10.3892/etm.2017.4550] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 11/21/2016] [Indexed: 01/05/2023] Open
Abstract
The aim of the present study was to evaluate the therapeutic potential of sesamol treatment on focal ischemia/reperfusion (I/R) injury in the rat brain. The results demonstrated that pretreatment with sesamol seven days prior to focal cerebral I/R injury had significant positive effects, including improvements in neurological deficits (P<0.05), and a reduction in malondialdehyde content and elevation of antioxidant levels (superoxide dismutase, glutathione and glutatione peroxidase; both P<0.05). Furthermore, levels of B cell lymphoma-2 (Bcl-2)-associated X protein and caspase-3 were significantly downregulated, whereas the level of Bcl-2 was effectively increased. Conversely, the mRNA expression of proinflammatory cytokines were significantly reduced in focal cerebral I/R injury rats upon sesamol intervention. Therefore, the beneficial effects of sesamol on cerebral I/R injury may be due to the reduction of oxidative stress, inhibition of apoptosis and inflammation. The findings of the present study suggest that sesamol supplementation may serve as potent adjuvant in the treatment of focal cerebral ischemia/reperfusion injury due to its neuroprotective effects.
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Affiliation(s)
- Xiu-Juan Gao
- Department of Pain Management, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China.,Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Guan-Nan Xie
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Lei Liu
- Department of Pain Management, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China.,Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Zhi-Jian Fu
- Department of Pain Management, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Zong-Wang Zhang
- Department of Anesthesiology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Liang-Zhu Teng
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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Misra S, Chopra K, Saikia UN, Sinha VR, Sehgal R, Modi M, Medhi B. Effect of mesenchymal stem cells and galantamine nanoparticles in rat model of Alzheimer's disease. Regen Med 2016; 11:629-46. [PMID: 27582416 DOI: 10.2217/rme-2016-0032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
AIM The present study investigated the efficacy of bone marrow-derived mesenchymal stem cells (BM-MSCs) in combination with galantamine hydrobromide-loaded solid lipid nanoparticles (GH-SLNs) in intracerebroventricular (ICV)-isoproterenol-induced rat model of Alzheimer's disease. MATERIALS & METHODS BM-MSCs were harvested by dissecting femur and tibia of 8-10-week-old Wistar rats. 1 × 10(6) cells were administered intravenously once in ICV-isoproterenol-induced rats followed by GH-SLNs (5 mg/kg) for 3 weeks. RESULTS & CONCLUSION ICV-isoproterenol resulted in significant memory deficit. The results demonstrated rapid regain of memory in isoproterenol-induced amnesic rats, following single intravenous administration of BM-MSCs and oral administration of GH-SLNs for 21 days. The combination of BM-MSCs and GH-SLNs produced a more pronounced protective effect, therefore, could be explored for the management of Alzheimer's disease.
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Affiliation(s)
- Shubham Misra
- Department of Pharmacology, Post Graduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Kanwaljit Chopra
- Pharmacology Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Uma Nahar Saikia
- Department of Histopathology, Post Graduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Vivek Ranjan Sinha
- Pharmaceutics Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Rakesh Sehgal
- Department of Medical Parasitology, Post Graduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Manish Modi
- Department of Neurology, Post Graduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Bikash Medhi
- Department of Pharmacology, Post Graduate Institute of Medical Education & Research, Chandigarh 160012, India
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Pezzini I, Mattoli V, Ciofani G. Mitochondria and neurodegenerative diseases: the promising role of nanotechnology in targeted drug delivery. Expert Opin Drug Deliv 2016; 14:513-523. [PMID: 27467010 DOI: 10.1080/17425247.2016.1218461] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Neurodegenerative diseases (NDs) represent a group of different clinical entities that, despite the specific primary etiologies, share a common signature in terms of a general mitochondrial dysfunction with consequent oxidative stress accumulation. As these two events occur early during neurodegenerative process, they could be considered ideal therapeutic targets. Areas covered: This review describes the nanotechnologies explored for the specific targeted delivery of drugs, in order to precisely direct molecules into the intended site, where they can practice their therapeutic effects. Expert opinion: Conventional drug delivery systems cannot provide adequate restoration and connection patterns that are essential for a functional recovery in NDs. Since orally delivered antioxidants are easily destroyed by acids and enzymes, only a small portion of consumed antioxidants gets absorbed, leading to low bioavailability and low concentration at the target site. In this scenario, the identification of new proenergetic drugs, in combination with the development of methods for selectively delivering biologically active molecules into mitochondria, will potentially launch new therapeutic approaches for the treatment of NDs, where energetic imbalance plays a central role.
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Affiliation(s)
- Ilaria Pezzini
- a The BioRobotics Institute , Scuola Superiore Sant'Anna , Pisa , Italy.,b Istituto Italiano di Tecnologia , Center for Micro-BioRobotics @SSSA , Pisa , Italy
| | - Virgilio Mattoli
- b Istituto Italiano di Tecnologia , Center for Micro-BioRobotics @SSSA , Pisa , Italy
| | - Gianni Ciofani
- b Istituto Italiano di Tecnologia , Center for Micro-BioRobotics @SSSA , Pisa , Italy.,c Department of Mechanical and Aerospace Engineering , Politecnico di Torino , Torino , Italy
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Majkutewicz I, Kurowska E, Podlacha M, Myślińska D, Grembecka B, Ruciński J, Plucińska K, Jerzemowska G, Wrona D. Dimethyl fumarate attenuates intracerebroventricular streptozotocin-induced spatial memory impairment and hippocampal neurodegeneration in rats. Behav Brain Res 2016; 308:24-37. [DOI: 10.1016/j.bbr.2016.04.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 04/04/2016] [Accepted: 04/09/2016] [Indexed: 11/26/2022]
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Singh N, Khullar N, Kakkar V, Kaur IP. Hepatoprotective effects of sesamol loaded solid lipid nanoparticles in carbon tetrachloride induced sub-chronic hepatotoxicity in rats. ENVIRONMENTAL TOXICOLOGY 2016; 31:520-532. [PMID: 25410024 DOI: 10.1002/tox.22064] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 10/17/2014] [Accepted: 10/18/2014] [Indexed: 06/04/2023]
Abstract
Sesamol is a phenolic component of sesame seed oil, which has been established as an antioxidant and also possesses potential for hepatoprotection. However, its protective role in carbon tetrachloride (CCl4 ) induced sub-chronic hepatotoxicity has not been studied. Limited oral bioavailability (BA) and rapid elimination (as conjugates) in rats is reported for sesamol. Considering its significant antioxidant potential and compromised BA, we packaged sesamol into solid lipid nanoparticles (S-SLNs) to enhance its hepatoprotective bioactivity. S-SLNs prepared by microemulsification method were nearly spherical in shape with an average particle size of 120.30 nm and their oral administration at 8 mg/kg body weight (BW) showed significantly (p < 0.001) better hepatoprotection than free sesamol (FS) and a well established hepatoprotective antioxidant silymarin [SILY (25 mg/kg BW); p < 0.05) in CCl4 induced sub-chronic liver injury in rats. Evaluations were done in terms of histological changes in the liver tissue, liver injury markers (serum alanine aminotransferase, serum aspartate aminotransferase, and serum lactate dehydrogenase); oxidative stress markers (lipid peroxidation, superoxide dismutase, and reduced glutathione) and proinflammatory response marker (tumor necrosis factor-alpha).
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Affiliation(s)
- Neha Singh
- Department of Biotechnology, Panjab University, Chandigarh, 160014, India
| | - Neeraj Khullar
- Department of Biotechnology, Panjab University, Chandigarh, 160014, India
| | - Vandita Kakkar
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Indu Pal Kaur
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
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Kumar A, Ekavali, Mishra J, Chopra K, Dhull DK. Possible role of P-glycoprotein in the neuroprotective mechanism of berberine in intracerebroventricular streptozotocin-induced cognitive dysfunction. Psychopharmacology (Berl) 2016; 233:137-52. [PMID: 26446867 DOI: 10.1007/s00213-015-4095-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/21/2015] [Indexed: 01/07/2023]
Abstract
RATIONALE The therapeutic potential of berberine has been well documented in various neurological problems. However, the neurological mechanism of berberine remains untapped in the light of its P-glycoprotein (P-gp)-mediated gut efflux properties responsible for reduced bioavailability. Verapamil, a well known L-type calcium channel blocker, has additional inhibitory activity against P-gp efflux pump. Thus, there is a strong scientific rationale to explore the interaction of berberine with verapamil as a possible neuroprotective strategy. OBJECTIVE The present study was designed to evaluate the effect of berberine, verapamil, and their combination on behavioral alterations, oxidative stress, mitochondrial dysfunction, neuroinflammation, and histopathological modifications in intracerebroventricular streptozocin (ICV-STZ)-induced sporadic dementia of Alzheimer's type in rats. METHODS Single bilateral ICV-STZ (3 mg/kg) administration was used as an experimental model of sporadic dementia of Alzheimer's type. RESULTS Berberine (25, 50, and 100 mg/kg, oral gavage) or verapamil (2.5 and 5 mg/kg, intraperitoneally) were used as treatment drugs, and memantine (5 mg/kg, intraperitoneally) was used as a standard. Berberine and verapamil significantly attenuated behavioral, biochemical, cellular, and histological alterations, suggesting their neuroprotective potential. Further, treatment of berberine (25 and 50 mg/kg) with verapamil (2.5 and 5.0 mg/kg) combinations respectively significantly potentiated their neuroprotective effect which was significant as compared to their effect per se in ICV-STZ-treated animals. CONCLUSION The augmentative outcome of verapamil on the neuroprotective effect of berberine can be speculated due to the inhibition of P-gp efflux mechanism and the prevention of calcium homeostasis alteration. Additionally, anti-inflammatory and antioxidant effects of both berberine and verapamil could also contribute in their protective effect.
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Affiliation(s)
- Anil Kumar
- Pharmacology Division, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Study (UGC-CAS), Panjab University, Chandigarh, 160014, India.
| | - Ekavali
- Pharmacology Division, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Study (UGC-CAS), Panjab University, Chandigarh, 160014, India
| | - Jitendriya Mishra
- Pharmacology Division, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Study (UGC-CAS), Panjab University, Chandigarh, 160014, India
| | - Kanwaljit Chopra
- Pharmacology Division, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Study (UGC-CAS), Panjab University, Chandigarh, 160014, India
| | - Dinesh K Dhull
- Pharmacology Division, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Study (UGC-CAS), Panjab University, Chandigarh, 160014, India
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Misra S, Chopra K, Sinha VR, Medhi B. Galantamine-loaded solid–lipid nanoparticles for enhanced brain delivery: preparation, characterization, in vitro and in vivo evaluations. Drug Deliv 2015; 23:1434-43. [DOI: 10.3109/10717544.2015.1089956] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shubham Misra
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh, Punjab, India,
| | - Kanwaljit Chopra
- Pharmacology Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, Punjab, India, and
| | - V. R. Sinha
- Pharmaceutics Division, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, Punjab, India
| | - Bikash Medhi
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh, Punjab, India,
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Nano-antioxidants: An emerging strategy for intervention against neurodegenerative conditions. Neurochem Int 2015; 89:209-26. [PMID: 26315960 DOI: 10.1016/j.neuint.2015.08.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 08/08/2015] [Accepted: 08/15/2015] [Indexed: 02/08/2023]
Abstract
Oxidative stress has for long been linked to the neuronal cell death in many neurodegenerative conditions. Conventional antioxidant therapies have been less effective in preventing neuronal damage caused by oxidative stress due to their inability to cross the blood brain barrier. Nanoparticle antioxidants constitute a new wave of antioxidant therapies for prevention and treatment of diseases involving oxidative stress. It is believed that nanoparticle antioxidants have strong and persistent interactions with biomolecules and would be more effective against free radical induced damage. Nanoantioxidants include inorganic nanoparticles possessing intrinsic antioxidant properties, nanoparticles functionalized with antioxidants or antioxidant enzymes to function as an antioxidant delivery system. Nanoparticles containing antioxidants have shown promise as high-performance therapeutic nanomedicine in attenuating oxidative stress with potential applications in treating and preventing neurodegenerative conditions. However, to realize the full potential of nanoantioxidants, negative aspects associated with the use of nanoparticles need to be overcome to validate their long term applications.
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Streptozotocin Intracerebroventricular-Induced Neurotoxicity and Brain Insulin Resistance: a Therapeutic Intervention for Treatment of Sporadic Alzheimer's Disease (sAD)-Like Pathology. Mol Neurobiol 2015; 53:4548-62. [PMID: 26298663 DOI: 10.1007/s12035-015-9384-y] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 08/10/2015] [Indexed: 02/03/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder that is remarkably characterized by pathological hallmarks which include amyloid plaques, neurofibrillary tangles, neuronal loss, and progressive cognitive loss. Several well-known genetic mutations which are being used for the development of a transgenic model of AD lead to an early onset familial AD (fAD)-like condition. However, these settings are only reasons for a small percentage of the total AD cases. The large majorities of AD cases are considered as a sporadic in origin and are less influenced by a single mutation of a gene. The etiology of sporadic Alzheimer's disease (sAD) remains unclear, but numerous risk factors have been identified that increase the chance of developing AD. Among these risk factors are insulin desensitization/resistance state, oxidative stress, neuroinflammation, synapse dysfunction, tau hyperphosphorylation, and deposition of Aβ in the brain. Subsequently, these risk factors lead to development of sAD. However, the underlying molecular mechanism is not so clear. Streptozotocin (STZ) produces similar characteristic pathology of sAD such as altered glucose metabolism, insulin signaling, synaptic dysfunction, protein kinases such as protein kinase B/C, glycogen synthase-3β (GSK-3β) activation, tau hyperphosphorylation, Aβ deposition, and neuronal apoptosis. Further, STZ also leads to inhibition of Akt/PKB, insulin receptor (IR) signaling molecule, and insulin resistance in brain. These alterations mediated by STZ can be used to explore the underlying molecular and pathophysiological mechanism of AD (especially sAD) and their therapeutic intervention for drug development against AD pathology.
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Hsu BY, Hung WL, Ho CT, Cheng IH, Hwang LS. Protective effects of sesamol and ferulic acid on the formation of endogenous trans-arachidonic acid in hAPP J20 mice. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.04.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Naringin ameliorates memory deficits in experimental paradigm of Alzheimer's disease by attenuating mitochondrial dysfunction. Pharmacol Biochem Behav 2014; 127:101-10. [DOI: 10.1016/j.pbb.2014.11.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 10/29/2014] [Accepted: 11/01/2014] [Indexed: 12/22/2022]
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Neuroprotective potential of sesamol and its loaded solid lipid nanoparticles in ICV-STZ-induced cognitive deficits: behavioral and biochemical evidence. Eur J Pharmacol 2014; 747:132-40. [PMID: 25449035 DOI: 10.1016/j.ejphar.2014.11.014] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 01/08/2023]
Abstract
Neuroinflammation is a prominent feature of Alzheimer disease (AD) and other chronic neurodegenerative disorders. Intracerebroventricular (ICV) streptozotocin (STZ) induced-cognitive impairment has been widely used as an experimental paradigm of Alzheimer׳s disease. Sesamol is a potent inhibitor of cytokine production as well as an antioxidant. The present study was designed to evaluate the effectiveness of sesamol in ICV-STZ-induced cognitive deficits in rats by incorporating it into solid lipid nanoparticles (SLNs). ICV-STZ administration produced significant cognitive deficits as assessed by both Morris water maze and elevated plus maze task which is accompanied by significantly enhanced nitrodative stress, altered acetylcholinesterase in rat brain along with significantly increased serum TNF-α levels. Chronic treatment with sesamol and sesamol loaded SLNs dose dependently restored cognitive deficits in ICV-STZ rats along with mitigation of nitrodative stress and cytokine release. Effectiveness of SLNs to deliver sesamol to the brain was shown by a significantly better alleviation of the oxidative stress parameters. Our findings demonstrate that loading of sesamol in SLNs is an effective strategy to mitigate ICV-STZ-induced neuronal dysfunction and memory deficits.
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Brain catalase in the streptozotocin-rat model of sporadic Alzheimer's disease treated with the iron chelator-monoamine oxidase inhibitor, M30. J Neural Transm (Vienna) 2014; 122:559-64. [PMID: 25252744 DOI: 10.1007/s00702-014-1307-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 09/01/2014] [Indexed: 12/12/2022]
Abstract
Low intracerebroventricular (icv) doses of streptozotocin (STZ) produce regionally specific brain neurochemical changes in rats that are similar to those found in the brain of patients with sporadic Alzheimer's disease (sAD). Since oxidative stress is thought to be one of the major pathologic processes in sAD, catalase (CAT) activity was estimated in the regional brain tissue of animals treated intracerebroventricularly with STZ and the multitarget iron chelator, antioxidant and MAO-inhibitor M30 [5-(N-methyl-N-propargylaminomethyl)-8-hydroxyquinoline]. Five-day oral pre-treatment of adult male Wistar rats with 10 mg/kg/day M30 dose was followed by a single injection of STZ (1 mg/kg, icv). CAT activity was measured colorimetrically in the hippocampus (HPC), brain stem (BS) and cerebellum (CB) of the control, STZ-, M30- and STZ + M30-treated rats, respectively, 4 weeks after the STZ treatment. STZ-treated rats demonstrated significantly lower CAT activity in all three brain regions in comparison to the controls (p < 0.05 for BS and CB, p < 0.01 for HPC). M30 pre-treatment of the control rats did not influence the CAT activity in HPC and CB, but significantly increased it in BS (p < 0.05). M30 pre-treatment of STZ-treated rats significantly increased CAT activity in the HPC in comparison to the STZ treatment alone (p < 0.05) and normalized to the control values. These findings are in line with the assumption that reactive oxygen species contribute to the pathogenesis of STZ in a rat model of sAD and indicate that multifunctional iron chelators such as M30 might also have beneficial effects in this non-transgenic sAD model.
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Sonia Angeline M, Sarkar A, Anand K, Ambasta R, Kumar P. Sesamol and naringenin reverse the effect of rotenone-induced PD rat model. Neuroscience 2013; 254:379-94. [DOI: 10.1016/j.neuroscience.2013.09.029] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/12/2013] [Accepted: 09/15/2013] [Indexed: 01/05/2023]
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Thushara RM, Hemshekhar M, Sunitha K, Kumar MS, Naveen S, Kemparaju K, Girish KS. Sesamol induces apoptosis in human platelets via reactive oxygen species-mediated mitochondrial damage. Biochimie 2013; 95:2060-8. [PMID: 23933095 DOI: 10.1016/j.biochi.2013.07.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/17/2013] [Indexed: 12/21/2022]
Abstract
Platelets play an indispensable role in human health and disease. Platelets are very sensitive to oxidative stress, as it leads to the damage of mitochondrial DNA, which is the initial step of a sequence of events culminating in the cell death through the intrinsic pathway of apoptosis. Owing to a lot of reports on secondary complications arising from oxidative stress caused by therapeutic drug overdose, the present study concentrated on the influence of sesamol on oxidative stress-induced platelet apoptosis. Sesamol, a phenolic derivative present in sesame seeds is an exceptionally promising drug with lots of reports on its protective functions, including its inhibitory effects on platelet aggregation at concentrations below 100 μM, and its anti-cancer effect at 1 mM. However, the present study explored the toxic effects of sesamol on human platelets. Sesamol at the concentration of 0.25 mM and above induced platelet apoptosis through endogenous generation of ROS, depletion of thiol pool, and Ca(2+) mobilization. It also induced mitochondrial membrane potential depolarization, caspase activation, cytochrome c translocation and phosphatidylserine exposure, thus illustrating the pro-apoptotic effect of sesamol at higher concentration. However, even at high concentration of 2 mM sesamol effectively inhibited collagen/ADP/epinephrine-induced platelet aggregation. The study demonstrates that even though sesamol inhibits platelet aggregation, it has the tendency to elicit platelet apoptosis at higher concentrations. Sesamol has a potential as thrombolytic agent, nevertheless the current work highlights the significance of an appropriate dosage of sesamol when it is used as a therapeutic drug.
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Affiliation(s)
- R M Thushara
- Department of Studies in Biochemistry, University of Mysore, Manasagangothri, Mysore 570 006, Karnataka, India
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Kaur A, Jindal S, Kaur IP, Chopra K. Effect of sesamol on the pathophysiological changes induced by surgical menopause in rodents. Climacteric 2012; 16:426-37. [PMID: 23017032 DOI: 10.3109/13697137.2012.696292] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Estrogen deprivation after menopause is associated with increased oxidative stress. The present study was designed to study the role of sesamol (3,4-methylenedioxyphenol), a phenolic antioxidant and anti-inflammatory molecule, in oxidative stress-induced changes in three major affected organ systems, the central nervous system, the cardiovascular system and the skeletal system in ovariectomized rats, a widely used animal model of menopause. DESIGN Animals were divided into eight different groups (n = 6-8). Five groups underwent ovariectomy; starting from the 2nd day of ovariectomy, three of these groups received sesamol (2, 4, 8 mg/kg) and the fourth group was administered α-tocopherol (100 mg/kg) orally for 7 weeks. The fifth ovariectomized group did not receive any drug treatment. Rats in the naïve (non-operated) and sham-operated groups did not receive any drug treatment, while the eighth group consisted of naïve animals which were treated for 7 weeks with only sesamol 8 mg/kg orally daily. After 7 weeks, animals were subjected to testing of behavioral paradigms (elevated plus maze and Morris water maze for assessment of anxiety and memory, respectively) 24 h after the last dose. After behavioral studies, animals were sacrificed for various biochemical estimations. RESULT Administration of sesamol (2, 4, 8 mg/kg orally) to ovariectomized rats for 7 weeks significantly and dose-dependently improved memory, attenuated anxiety, decreased oxidative stress in brain, improved the serum lipid profile and reduced serum tumor necrosis factor-α levels when compared with ovariectomized control rats. Similar protective effects were observed in the case of the skeletal system studies. Sesamol increased the bone ash content and the mechanical stress parameters in treated groups. CONCLUSION The results emphasize the involvement of oxidative stress and inflammation in the development of ovariectomy-induced pathophysiological changes and point towards the therapeutic potential of sesamol in menopausal pathologies.
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Affiliation(s)
- A Kaur
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Study, Panjab University, Chandigarh, India
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What have we learned from the streptozotocin-induced animal model of sporadic Alzheimer’s disease, about the therapeutic strategies in Alzheimer’s research. J Neural Transm (Vienna) 2012; 120:233-52. [DOI: 10.1007/s00702-012-0877-9] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 07/26/2012] [Indexed: 12/30/2022]
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Khan MB, Khan MM, Khan A, Ahmed ME, Ishrat T, Tabassum R, Vaibhav K, Ahmad A, Islam F. Naringenin ameliorates Alzheimer's disease (AD)-type neurodegeneration with cognitive impairment (AD-TNDCI) caused by the intracerebroventricular-streptozotocin in rat model. Neurochem Int 2012; 61:1081-93. [PMID: 22898296 DOI: 10.1016/j.neuint.2012.07.025] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 07/27/2012] [Accepted: 07/31/2012] [Indexed: 11/17/2022]
Abstract
Oxidative stress is involved in Alzheimer's disease (AD)-type neurodegeneration with cognitive impairment (AD-TNDCI) as well as age related cognitive deficit. The present study was designed to investigate the pre-treatment effects of naringenin (NAR), a polyphenolic compound on cognitive dysfunction, oxidative stress in the hippocampus, and hippocampal neuron injury in a rat model of AD-TNDCI. The rats were pre-treated with NAR at a selective dose (50mg/kg, orally) for 2 weeks followed by intracerebroventricular-streptozotocin (ICV-STZ) (3mg/kg; 5μl per site) injection bilaterally. Behavioral alterations were monitored after 2 weeks from the lesion using passive avoidance test and Morris water maze paradigm. Three weeks after the lesion, the rats were sacrificed for measuring non-enzymatic [4-hydroxynonenal (4-HNE), malonaldehyde (MDA), thiobarbituric reactive substances (TBARS), hydrogen peroxide (H(2)O(2)), protein carbonyl (PC), reduced glutathione (GSH)] content and enzymatic [glutathione peroxidase (GPx), glutathione reductase (GR), glutathione-S-transferase (GST), superoxide dismutase (SOD), catalase (CAT) and Na(+)/K(+)-ATPase] activity in the hippocampus, and expression of choline acetyltransferase (ChAT) positive neuron, and histopathology of hippocampal neurons. The non-enzymatic level and enzymatic activity was significantly increased and decreased, respectively, with striking impairments in spatial learning and memory, loss of ChAT positive neuron and severe damage to hippocampal neurons in the rat induced by ICV-STZ. These abnormalities were significantly improved by NAR pre-treatment. The study suggests that NAR can protect against cognitive deficits, neuronal injury and oxidative stress induced by ICV-STZ, and may be used as a potential agent in treatment of neurodegenerative diseases such as AD-TNDCI.
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Affiliation(s)
- M Badruzzaman Khan
- Department of Medical Elementology & Toxicology, Hamdard University, Hamdard Nagar, New Delhi, India.
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Özkay ÜD, Can ÖD, Özkay Y, Öztürk Y. Effect of benzothiazole/piperazine derivatives on intracerebroventricular streptozotocin-induced cognitive deficits. Pharmacol Rep 2012; 64:834-47. [DOI: 10.1016/s1734-1140(12)70878-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 03/26/2012] [Indexed: 11/16/2022]
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